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1

Independent optical excitation of distinct neural populations  

E-Print Network (OSTI)

Optogenetic tools enable examination of how specific cell types contribute to brain circuit functions. A long-standing question is whether it is possible to independently activate two distinct neural populations in mammalian ...

Klapoetke, Nathan Cao

2

PETITION TO LIST THE GULF OF MEXICO DISTINCT POPULATION SEGMENT OF  

E-Print Network (OSTI)

SWAMP ­ Sperm Whale Acoustic Monitoring Program SWSS ­ Sperm Whale Seismic Study USFWS ­ United States Fish and Wildlife Service INTRODUCTION WildEarth Guardians hereby petitions the Secretary of Commerce

3

Mon. Not. R. Astron. Soc. 392, 91103 (2009) doi:10.1111/j.1365-2966.2008.14063.x Low-luminosity gamma-ray bursts as a distinct GRB population: a firmer  

E-Print Network (OSTI)

-luminosity gamma-ray bursts as a distinct GRB population: a firmer case from multiple criteria constraints-BeppoSAX gamma-ray burst GRB 980425, both with much lower luminosity and redshift compared to other observed Gamma-ray Observatory (CGRO)/BATSE and Swift/BAT and the redshift-known gamma-ray burst (GRB) sample, we

Zhang, Bing

4

A WFC3/HST VIEW OF THE THREE STELLAR POPULATIONS IN THE GLOBULAR CLUSTER NGC 6752  

SciTech Connect

Multi-band Hubble Space Telescope photometry reveals that the main sequence, sub-giant, and the red-giant branch of the globular cluster NGC 6752 splits into three main components in close analogy with the three distinct segments along its horizontal branch stars. These triple sequences are consistent with three stellar groups: a stellar population with a chemical composition similar to field-halo stars (Population a), a Population (c) with enhanced sodium and nitrogen, depleted carbon and oxygen, and an enhanced helium abundance ({Delta}Y {approx} 0.03), and a Population (b) with an intermediate (between Populations a and c) chemical composition and slightly enhanced helium ({Delta}Y {approx} 0.01). These components contain {approx}25% (Population a), {approx}45% (Population b), and {approx}30% (Population c) of the stars. No radial gradient for the relative numbers of the three populations has been identified out to about 2.5 half-mass radii.

Milone, A. P.; Marino, A. F.; Yong, D., E-mail: milone@mso.anu.edu.au, E-mail: amarino@mso.anu.edu.au, E-mail: david.yong@anu.edu.au [Research School of Astronomy and Astrophysics, Australian National University, Cotter Road, Weston, ACT, 2611 (Australia); and others

2013-04-20T23:59:59.000Z

5

Solar Distinction | Open Energy Information  

Open Energy Info (EERE)

Distinction Jump to: navigation, search Name: Solar Distinction Place: Albuquerque, New Mexico Product: New Mexico-based PV module maker. References: Solar Distinction1 This...

6

Chapter 6 - Audio Segmentation  

Science Journals Connector (OSTI)

Abstract This chapter focuses on a vital stage of audio analysis, the audio segmentation stage, which focuses on splitting an uninterrupted audio signal into segments of homogeneous content. The chapter describes two general categories of audio segmentation: those that employ supervised knowledge and those that are unsupervised or semi-supervised. In this presentation context, certain specific segmentation tasks are presented, e.g., silence removal and speaker diarization.

Theodoros Giannakopoulos; Aggelos Pikrakis

2014-01-01T23:59:59.000Z

7

Audio Segmentation and Classification  

E-Print Network (OSTI)

Audio Segmentation and Classification Abdillahi Hussein Omar Kgs. Lyngby 2005 #12;Preface The work describes the work done on the development of an audio segmentation and classification system. Many existing works on audio classification deal with the problem of classifying known homogeneous audio segments

8

RNA segment 5 of broadhaven virus, a tick-borne orbivirus, shows sequence homology with segment 5 of bluetongue virus  

Science Journals Connector (OSTI)

The sequence of Broadhaven (BIRD) virus segment 5, the major genetic determinant of serotype, is 1658 nucleotides in length and contains a single open reading frame (ORF) having the coding capacity for a protein of Mr 52.5K. Comparison of the ORF of segment 5 of BIRD virus with published sequences of bluetongue virus (BTV) revealed 30% nucleotide homology and 31 % amino acid homology with the protein encoded by segment 5 of BTV serotype 10. Significant homology was not shown with segment 2 of BTV, the major genetic determinant of the BTV serotype. The sequences at the 3? and 5? ends determined for BIRD segment 5 were similar to the respective 3? and 5? regions of BTV. The sequence data provide evidence of an evolutionary relationship between two ecologically distinct groups of orbiviruses and demonstrate changes that have occurred in the functions of genetically related genomic segments.

Stephen R. Moss; Akio Fukusho; Patricia A. Nuttall

1990-01-01T23:59:59.000Z

9

Impact assisted segmented cutterhead  

DOE Patents (OSTI)

An impact assisted segmented cutterhead device is provided for cutting various surfaces from coal to granite. The device comprises a plurality of cutting bit segments deployed in side by side relationship to form a continuous cutting face and a plurality of impactors individually associated with respective cutting bit segments. An impactor rod of each impactor connects that impactor to the corresponding cutting bit segment. A plurality of shock mounts dampening the vibration from the associated impactor. Mounting brackets are used in mounting the cutterhead to a base machine.

Morrell, Roger J. (Bloomington, MN); Larson, David A. (Minneapolis, MN); Ruzzi, Peter L. (Eagan, MN)

1992-01-01T23:59:59.000Z

10

Image Segmentation and Uncertainty  

Science Journals Connector (OSTI)

From the Publisher:Presents the first unified theory of image segmentation, written by the winners of the 1985 Pattern Recognition Society medal. Until now, image processing algorithms have always been beset by uncertainties, no one method proving completely ...

Roland 1949- Wilson; Michael Spann

1988-02-01T23:59:59.000Z

11

Segmented rail linear induction motor  

DOE Patents (OSTI)

A segmented rail linear induction motor has a segmented rail consisting of a plurality of nonferrous electrically conductive segments aligned along a guideway. The motor further includes a carriage including at least one pair of opposed coils fastened to the carriage for moving the carriage. A power source applies an electric current to the coils to induce currents in the conductive surfaces to repel the coils from adjacent edges of the conductive surfaces.

Cowan, Jr., Maynard (1107 Stagecoach Rd. SE., Albuquerque, NM 87123); Marder, Barry M. (1412 Pinnacle View Dr. NE., Albuquerque, NM 87123)

1996-01-01T23:59:59.000Z

12

Segmented rail linear induction motor  

DOE Patents (OSTI)

A segmented rail linear induction motor has a segmented rail consisting of a plurality of nonferrous electrically conductive segments aligned along a guideway. The motor further includes a carriage including at least one pair of opposed coils fastened to the carriage for moving the carriage. A power source applies an electric current to the coils to induce currents in the conductive surfaces to repel the coils from adjacent edges of the conductive surfaces. 6 figs.

Cowan, M. Jr.; Marder, B.M.

1996-09-03T23:59:59.000Z

13

Segmenting data sets for RIP  

Science Journals Connector (OSTI)

A method for experimental phasing by segmenting a large data set into sub-data sets for radiation-damage-induced phasing is presented.

de Sanctis, D.

2012-08-18T23:59:59.000Z

14

Atlas-Based Prostate Segmentation Using an Hybrid Registration  

E-Print Network (OSTI)

Atlas-Based Prostate Segmentation Using an Hybrid Registration S´ebastien Martin (1) Vincent Daanen on the registration of an anatomical atlas computed from a population of 18 MRI exams onto a patient im- age-matching algorithm is used for both atlas building and atlas registration. Results: The method has been validated

Boyer, Edmond

15

Segmented heat exchanger  

DOE Patents (OSTI)

A segmented heat exchanger system for transferring heat energy from an exhaust fluid to a working fluid. The heat exchanger system may include a first heat exchanger for receiving incoming working fluid and the exhaust fluid. The working fluid and exhaust fluid may travel through at least a portion of the first heat exchanger in a parallel flow configuration. In addition, the heat exchanger system may include a second heat exchanger for receiving working fluid from the first heat exchanger and exhaust fluid from a third heat exchanger. The working fluid and exhaust fluid may travel through at least a portion of the second heat exchanger in a counter flow configuration. Furthermore, the heat exchanger system may include a third heat exchanger for receiving working fluid from the second heat exchanger and exhaust fluid from the first heat exchanger. The working fluid and exhaust fluid may travel through at least a portion of the third heat exchanger in a parallel flow configuration.

Baldwin, Darryl Dean (Lafayette, IN); Willi, Martin Leo (Dunlap, IL); Fiveland, Scott Byron (Metamara, IL); Timmons, Kristine Ann (Chillicothe, IL)

2010-12-14T23:59:59.000Z

16

Optimal segmentation and packaging process  

DOE Patents (OSTI)

A process for improving packaging efficiency uses three dimensional, computer simulated models with various optimization algorithms to determine the optimal segmentation process and packaging configurations based on constraints including container limitations. The present invention is applied to a process for decontaminating, decommissioning (D&D), and remediating a nuclear facility involving the segmentation and packaging of contaminated items in waste containers in order to minimize the number of cuts, maximize packaging density, and reduce worker radiation exposure. A three-dimensional, computer simulated, facility model of the contaminated items are created. The contaminated items are differentiated. The optimal location, orientation and sequence of the segmentation and packaging of the contaminated items is determined using the simulated model, the algorithms, and various constraints including container limitations. The cut locations and orientations are transposed to the simulated model. The contaminated items are actually segmented and packaged. The segmentation and packaging may be simulated beforehand. In addition, the contaminated items may be cataloged and recorded.

Kostelnik, Kevin M. (Idaho Falls, ID); Meservey, Richard H. (Idaho Falls, ID); Landon, Mark D. (Idaho Falls, ID)

1999-01-01T23:59:59.000Z

17

The LOFT Ground Segment  

E-Print Network (OSTI)

LOFT, the Large Observatory For X-ray Timing, was one of the ESA M3 mission candidates that completed their assessment phase at the end of 2013. LOFT is equipped with two instruments, the Large Area Detector (LAD) and the Wide Field Monitor (WFM). The LAD performs pointed observations of several targets per orbit (~90 minutes), providing roughly ~80 GB of proprietary data per day (the proprietary period will be 12 months). The WFM continuously monitors about 1/3 of the sky at a time and provides data for about ~100 sources a day, resulting in a total of ~20 GB of additional telemetry. The LOFT Burst alert System additionally identifies on-board bright impulsive events (e.g., Gamma-ray Bursts, GRBs) and broadcasts the corresponding position and trigger time to the ground using a dedicated system of ~15 VHF receivers. All WFM data are planned to be made public immediately. In this contribution we summarize the planned organization of the LOFT ground segment (GS), as established in the mission Yellow Book 1 . We...

Bozzo, E; Argan, A; Barret, D; Binko, P; Brandt, S; Cavazzuti, E; Courvoisier, T; Herder, J W den; Feroci, M; Ferrigno, C; Giommi, P; Gtz, D; Guy, L; Hernanz, M; Zand, J J M in't; Klochkov, D; Kuulkers, E; Motch, C; Lumb, D; Papitto, A; Pittori, C; Rohlfs, R; Santangelo, A; Schmid, C; Schwope, A D; Smith, P J; Webb, N A; Wilms, J; Zane, S

2014-01-01T23:59:59.000Z

18

Political Science Departmental Distinction Certificate Program  

E-Print Network (OSTI)

Political Science Departmental Distinction Certificate Program Purpose: The goal of the Departmental Distinction Certificate Program is to challenge and recognize excellent Political Science students both for their academic and academic- related work. Eligibility: Students majoring in Political Science

Elsherbeni, Atef Z.

19

Distinctive Appliances: Order (2014-CE-23020)  

Energy.gov (U.S. Department of Energy (DOE))

DOE ordered Distinctive Appliances Distributing, Inc. to pay a $8,000 civil penalty after finding Distinctive Appliances had failed to certify that certain models of cooking products comply with the applicable energy conservation standards.

20

Three Essays on Segment Reporting  

E-Print Network (OSTI)

Segment information is vital, essential, fundamental, indispensable, and integral in the process of projecting companies' performance (AIMR, 1993). The purpose of this dissertation is to investigate the causes and consequences ...

Wang, Qian

2009-08-31T23:59:59.000Z

Note: This page contains sample records for the topic "distinct population segment" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Automated bone segmentation from dental CBCT images using patch-based sparse representation and convex optimization  

SciTech Connect

Purpose: Cone-beam computed tomography (CBCT) is an increasingly utilized imaging modality for the diagnosis and treatment planning of the patients with craniomaxillofacial (CMF) deformities. Accurate segmentation of CBCT image is an essential step to generate three-dimensional (3D) models for the diagnosis and treatment planning of the patients with CMF deformities. However, due to the poor image quality, including very low signal-to-noise ratio and the widespread image artifacts such as noise, beam hardening, and inhomogeneity, it is challenging to segment the CBCT images. In this paper, the authors present a new automatic segmentation method to address these problems. Methods: To segment CBCT images, the authors propose a new method for fully automated CBCT segmentation by using patch-based sparse representation to (1) segment bony structures from the soft tissues and (2) further separate the mandible from the maxilla. Specifically, a region-specific registration strategy is first proposed to warp all the atlases to the current testing subject and then a sparse-based label propagation strategy is employed to estimate a patient-specific atlas from all aligned atlases. Finally, the patient-specific atlas is integrated into amaximum a posteriori probability-based convex segmentation framework for accurate segmentation. Results: The proposed method has been evaluated on a dataset with 15 CBCT images. The effectiveness of the proposed region-specific registration strategy and patient-specific atlas has been validated by comparing with the traditional registration strategy and population-based atlas. The experimental results show that the proposed method achieves the best segmentation accuracy by comparison with other state-of-the-art segmentation methods. Conclusions: The authors have proposed a new CBCT segmentation method by using patch-based sparse representation and convex optimization, which can achieve considerably accurate segmentation results in CBCT segmentation based on 15 patients.

Wang, Li; Gao, Yaozong; Shi, Feng; Liao, Shu; Li, Gang [Department of Radiology and BRIC, University of North Carolina at Chapel Hill, North Carolina 27599 (United States)] [Department of Radiology and BRIC, University of North Carolina at Chapel Hill, North Carolina 27599 (United States); Chen, Ken Chung [Department of Oral and Maxillofacial Surgery, Houston Methodist Hospital Research Institute, Houston, Texas 77030 and Department of Stomatology, National Cheng Kung University Medical College and Hospital, Tainan, Taiwan 70403 (China)] [Department of Oral and Maxillofacial Surgery, Houston Methodist Hospital Research Institute, Houston, Texas 77030 and Department of Stomatology, National Cheng Kung University Medical College and Hospital, Tainan, Taiwan 70403 (China); Shen, Steve G. F.; Yan, Jin [Department of Oral and Craniomaxillofacial Surgery and Science, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University College of Medicine, Shanghai, China 200011 (China)] [Department of Oral and Craniomaxillofacial Surgery and Science, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University College of Medicine, Shanghai, China 200011 (China); Lee, Philip K. M.; Chow, Ben [Hong Kong Dental Implant and Maxillofacial Centre, Hong Kong, China 999077 (China)] [Hong Kong Dental Implant and Maxillofacial Centre, Hong Kong, China 999077 (China); Liu, Nancy X. [Department of Oral and Maxillofacial Surgery, Houston Methodist Hospital Research Institute, Houston, Texas 77030 and Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China 100050 (China)] [Department of Oral and Maxillofacial Surgery, Houston Methodist Hospital Research Institute, Houston, Texas 77030 and Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China 100050 (China); Xia, James J. [Department of Oral and Maxillofacial Surgery, Houston Methodist Hospital Research Institute, Houston, Texas 77030 (United States) [Department of Oral and Maxillofacial Surgery, Houston Methodist Hospital Research Institute, Houston, Texas 77030 (United States); Department of Surgery (Oral and Maxillofacial Surgery), Weill Medical College, Cornell University, New York, New York 10065 (United States); Department of Oral and Craniomaxillofacial Surgery and Science, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University College of Medicine, Shanghai, China 200011 (China); Shen, Dinggang, E-mail: dgshen@med.unc.edu [Department of Radiology and BRIC, University of North Carolina at Chapel Hill, North Carolina 27599 and Department of Brain and Cognitive Engineering, Korea University, Seoul, 136701 (Korea, Republic of)] [Department of Radiology and BRIC, University of North Carolina at Chapel Hill, North Carolina 27599 and Department of Brain and Cognitive Engineering, Korea University, Seoul, 136701 (Korea, Republic of)

2014-04-15T23:59:59.000Z

22

SHORT GEODESIC SEGMENTS BETWEEN TWO POINTS ON A CLOSED RIEMANNIAN MANIFOLD  

E-Print Network (OSTI)

SHORT GEODESIC SEGMENTS BETWEEN TWO POINTS ON A CLOSED RIEMANNIAN MANIFOLD Alexander Nabutovsky there exist at least k distinct geodesics of length at most 20k!d between these points for every positive that for any pair of points on a closed Riemannian man- ifold Mn there exist infinitely many geodesics

Nabutovsky, Alexander

23

Journal of Theoretical Biology 227 (2004) 397401 Evolutionary stability for large populations  

E-Print Network (OSTI)

population ESS, as distinct from Maynard Smith's infinite population ESS and Schaffer's finite population ESS. Building on Schaffer's finite population model, we define the large population ESS as a strategy which. The large population ESS is not equivalent to the infinite population ESS: we give examples of games

Gordon, Geoffrey J.

24

Spoiled Distinctions: Everyday Aesthetics in French Modernism  

E-Print Network (OSTI)

enough to perceive micro-networks of graduated distinctions,study an inventory of micro-networks of words that are very

Freed-Thall, Hannah Isadora

2010-01-01T23:59:59.000Z

25

Medical Image Segmentation Xiaolei Huang  

E-Print Network (OSTI)

(CAT), Magnetic Resonance Imaging (MRI), Ultrasound, and X-Ray, in standard DICOM formats are often for searching and mining in medical image archives. A chal- lenging problem is to segment regions with boundary-based classification approaches. We first review these two categories of methods and discuss the potential

Huang, Xiaolei

26

Spatial Sampling for Image Segmentation  

E-Print Network (OSTI)

AND ALONSO RAMIREZ­MANZANARES3 1 Centro de Investigacion en Matematicas A.C, Guanajuato GTO 36000, Mexico 2 Matematicas, Guanajuato GTO 36000, Mexico Email: mrivera@cimat.mx We present a novel framework for image­ processing in order to obtain a desired solution. On the other hand, the image segmentation is commonly

Rivera, Mariano

27

Segmentation strategies for polymerized volume data sets  

E-Print Network (OSTI)

of enhanced vertex information. Segmentation of the PVDS is attained by intersecting and merging Lblock coverings of the enhanced volumetric data. The data structure allows for easy compression, storage, segmentation, and reconstruction of volumetric data...

Doddapaneni, Venkata Purna

2006-04-12T23:59:59.000Z

28

@ work' video segment features Robotic Software Engineer  

SciTech Connect

@ work highlights Idaho National Laboratory employees and the jobs they perform.This segment features Robotic Software Engineer Miles Walton.

Idaho National Laboratory

2008-03-27T23:59:59.000Z

29

@ work' video segment features Robotic Software Engineer  

ScienceCinema (OSTI)

@ work highlights Idaho National Laboratory employees and the jobs they perform.This segment features Robotic Software Engineer Miles Walton.

Idaho National Laboratory

2010-01-08T23:59:59.000Z

30

Phylogenetic Resolution with mtDNA D-loop vs. HVS 1: Methodological Approaches in Anthropological Genetics Utilizing Four Siberian Populations  

E-Print Network (OSTI)

on mitochondrial DNA in anthropological studies has utilized the hypervariable segment 1 (HVS 1) to reconstruct population history and structure, explore population ancestry, construct phylogenies, and answer questions about the origins of prehistoric populations...

Johnson, Stephen Michael

2013-08-31T23:59:59.000Z

31

Quantum Algorithms for Element Distinctness Harry Buhrman  

E-Print Network (OSTI)

Quantum Algorithms for Element Distinctness Harry Buhrman Christoph D¨urr Mark Heiligman§ Peter, France. Email: durr@lri.fr. §NSA, Suite 6111, Fort George G. Meade, MD 20755, USA. Email: mheilig

Magniez, Frédéric

32

Quantum Algorithms for Element Distinctness Harry Buhrman  

E-Print Network (OSTI)

Quantum Algorithms for Element Distinctness Harry Buhrman£ Christoph D¨urr? Mark Heiligman? Peter, France. Email: durr@lri.fr. ?NSA, Suite 6111, Fort George G. Meade, MD 20755, USA. Email: mheilig

de Wolf, Ronald

33

Segmented ceramic liner for induction furnaces  

DOE Patents (OSTI)

A non-fibrous ceramic liner for induction furnaces is provided by vertically stackable ring-shaped liner segments made of ceramic material in a light-weight cellular form. The liner segments can each be fabricated as a single unit or from a plurality of arcuate segments joined together by an interlocking mechanism. Also, the liner segments can be formed of a single ceramic material or can be constructed of multiple concentric layers with the layers being of different ceramic materials and/or cellular forms. Thermomechanically damaged liner segments are selectively replaceable in the furnace. 5 figs.

Gorin, A.H.; Holcombe, C.E.

1994-07-26T23:59:59.000Z

34

Cancer Epidemiology Population Health Sciences 750  

E-Print Network (OSTI)

-01/5/11-1 Cancer Epidemiology Population Health Sciences 750 3 credits When: Spring 2011 (1 Audience: This course is intended for students in health-related disciplines interested in cancer etiology. the unequal burden of cancer among populations and variations across time and geography, 2. the distinctive

Sheridan, Jennifer

35

Fluidized bed boiler having a segmented grate  

DOE Patents (OSTI)

A fluidized bed furnace (10) is provided having a perforate grate (9) within a housing which supports a bed of particulate material including some combustibles. The grate is divided into a plurality of segments (E2-E6, SH1-SH5, RH1-RH5), with the airflow to each segment being independently controlled. Some of the segments have evaporating surface imbedded in the particulate material above them, while other segments are below superheater surface or reheater surface. Some of the segments (E1, E7) have no surface above them, and there are ignitor combustors (32, 34) directed to fire into the segments, for fast startup of the furnace without causing damage to any heating surface.

Waryasz, Richard E. (Longmeadow, MA)

1984-01-01T23:59:59.000Z

36

Cooling system for three hook ring segment  

DOE Patents (OSTI)

A triple hook ring segment including forward, midsection and aft mounting hooks for engagement with respective hangers formed on a ring segment carrier for supporting a ring segment panel, and defining a forward high pressure chamber and an aft low pressure chamber on opposing sides of the midsection mounting hook. An isolation plate is provided on the aft side of the midsection mounting hook to form an isolation chamber between the aft low pressure chamber and the ring segment panel. High pressure air is supplied to the forward chamber and flows to the isolation chamber through crossover passages in the midsection hook. The isolation chamber provides convection cooling air to an aft portion of the ring segment panel and enables a reduction of air pressure in the aft low pressure chamber to reduce leakage flow of cooling air from the ring segment.

Campbell, Christian X.; Eng, Darryl; Lee, Ching-Pang; Patat, Harry

2014-08-26T23:59:59.000Z

37

Segmented Nanowires Displaying Locally Controllable Properties...  

NLE Websites -- All DOE Office Websites (Extended Search)

optical properties of the segmented nanowires are exploited to form electronic and optoelectronic devices. Benefits This method offers a means to control the local electronic and...

38

NUCLEAR SEGMENTATION IN MICROSCOPE CELL IMAGES: A HAND-SEGMENTED DATASET AND COMPARISON OF ALGORITHMS  

E-Print Network (OSTI)

NUCLEAR SEGMENTATION IN MICROSCOPE CELL IMAGES: A HAND-SEGMENTED DATASET AND COMPARISON. The hand-labeled dataset (and all software used to com- pare methods) is publicly available to enable, Image seg- mentation 1. INTRODUCTION Nuclear segmentation is an important step in the pipeline of many

Gordon, Geoffrey J.

39

Kelly. Segmentation and Classification of HTML Documents SEGMENTATION AND CLASSIFICATION OF HTML DOCUMENTS  

E-Print Network (OSTI)

Kelly. Segmentation and Classification of HTML Documents SEGMENTATION AND CLASSIFICATION OF HTML DOCUMENTS FOR DISPLAY ON SMALL SCREEN DEVICES Peter M. Kelly 1 1 School of Computer Science, The University of the Second Australian Undergraduate Students' Computing Conference, 2004 page 97 #12;Kelly. Segmentation

Rubinstein, Benjamin

40

Improving image segmentation by learning region affinities  

SciTech Connect

We utilize the context information of other regions in hierarchical image segmentation to learn new regions affinities. It is well known that a single choice of quantization of an image space is highly unlikely to be a common optimal quantization level for all categories. Each level of quantization has its own benefits. Therefore, we utilize the hierarchical information among different quantizations as well as spatial proximity of their regions. The proposed affinity learning takes into account higher order relations among image regions, both local and long range relations, making it robust to instabilities and errors of the original, pairwise region affinities. Once the learnt affinities are obtained, we use a standard image segmentation algorithm to get the final segmentation. Moreover, the learnt affinities can be naturally unutilized in interactive segmentation. Experimental results on Berkeley Segmentation Dataset and MSRC Object Recognition Dataset are comparable and in some aspects better than the state-of-art methods.

Prasad, Lakshman [Los Alamos National Laboratory; Yang, Xingwei [TEMPLE UNIV.; Latecki, Longin J [TEMPLE UNIV.

2010-11-03T23:59:59.000Z

Note: This page contains sample records for the topic "distinct population segment" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

The Effect of SFAS No. 131 on the Cross-Segment Variability of Profits Reported by Multiple Segment Firms  

E-Print Network (OSTI)

Our study assesses whether SFAS No. 131 improved disclosure about the diversity of multiple segment firms operations. We find a post-SFAS No. 131 increase in cross-segment variability of segment profits, an increase in ...

Ettredge, Michael L.; Kwon, Soo Young; Smith, David B.; Stone, Mary S.

2006-01-01T23:59:59.000Z

42

Segmentation development for Galveston Bay. Final report  

SciTech Connect

The purpose of the study is to develop a segmentation scheme for the Galveston Bay System that will facilitate the other efforts planned by the Galveston Bay National Estuary Program (GBNEP). The study is organized around four tasks: (1) the evaluation of existing segmentation schemes, (2) evaluation of natural features and anthropogenic inputs, (3) determination of segmentation criteria, (4) and the drafting of the boundaries. To facilitate the management and presentation of the large amounts of geobased data accumulated, a geographic information system (GIS) was developed for the study area.

Not Available

1992-05-01T23:59:59.000Z

43

automated segmentation algorithm: Topics by E-print Network  

NLE Websites -- All DOE Office Websites (Extended Search)

Tumor Segmentation using two MRI Modalities Mohamed Ben Salah1 , Idanis Diaz1 automated brain tumor segmentation from only two magnetic resonance image modalities. The technique...

44

Multilevel spectral clustering : graph partitions and image segmentation  

E-Print Network (OSTI)

While the spectral graph partitioning method gives high quality segmentation, segmenting large graphs by the spectral method is computationally expensive. Numerous multilevel graph partitioning algorithms are proposed to ...

Kong, Tian Fook

2008-01-01T23:59:59.000Z

45

Blood vessel segmentation methodologies in retinal images - A survey  

Science Journals Connector (OSTI)

Retinal vessel segmentation algorithms are a fundamental component of automatic retinal disease screening systems. This work examines the blood vessel segmentation methodologies in two dimensional retinal images acquired from a fundus camera and a survey ... Keywords: Blood vessel segmentation, Image segmentation, Medical imaging, Retinal images, Retinopathy, Survey

M. M. Fraz; P. Remagnino; A. Hoppe; B. Uyyanonvara; A. R. Rudnicka; C. G. Owen; S. A. Barman

2012-10-01T23:59:59.000Z

46

Heart chambers and whole heart segmentation techniques: review  

E-Print Network (OSTI)

Heart chambers and whole heart segmentation techniques: review Dongwoo Kang Jonghye Woo Piotr J://electronicimaging.spiedigitallibrary.org/ on 01/15/2014 Terms of Use: http://spiedl.org/terms #12;Heart chambers and whole heart segmentation, and reproducible segmentation methods. Figure 1 illustrates an example of segmentation of heart on CT scan. A

Kuo, C.-C. "Jay"

47

Design unbiased estimation in line intersect sampling using segmented  

E-Print Network (OSTI)

Design unbiased estimation in line intersect sampling using segmented transects D A V I D L . R applications of line intersect sampling, transects consist of multiple, connected segments in a prescribed, suitably generalized to segmented transect designs. The relative efficiency and utility of segmented

48

Word Segmentation as General Chunking Daniel Hewlett and Paul Cohen  

E-Print Network (OSTI)

utterance. When these utterance segments are used to split future utterances, the resulting self-sustaining

49

Displacement and segment linkage in fracture zones  

SciTech Connect

Fault zones and vein arrays are composed of overstepping and linked segments, so knowledge of segment evolution is crucial in understanding the development of zones. Displacement-distance profiles of faults and veins are used to study the development of segments and zones. Detailed mapping of normal and strike-slip faults allows comparison of the displacement-distance characteristics of faults both normal and parallel to the displacement vector, i.e. modes III and II propagation respectively. Similarly, vein width variations can be used to study mode I propagation. Displacement varies with distance along fractures, with zero displacement at fracture tips. Steep displacement gradients can occur where faults and extension fractures overstep because of displacement transfer between the segments. This displacement transfer is accommodated by relay and bridge structures. Overstepping fractures may link to form a single fracture with an irregular displacement-distance profile. A linkage point is often marked by a bend with a displacement minimum, where relay/bridge structures are preserved as normal drag. Displacement variations are also caused by fault bends, conjugate relationships and by lithological variations. As interaction between fractures increases, r/d[sub MAX] ratios tend to decrease (where r = the distance between the tip and the point of maximum displacement, and d[sub MAX] = maximum displacement). As a result of the interaction of fracture segments, fracture zones tend to have complex displacement-distance profiles.

Peacock, D.C.P.; Sanderson, D.J. (Univ. of Southampton (United Kingdom). Dept. of Geology)

1992-01-01T23:59:59.000Z

50

A new and morphologically distinct population of cavernicolous Poecilia mexicana (Poeciliidae: Teleostei)  

E-Print Network (OSTI)

Abstract The cave molly, Poecilia mexicana, from the Cueva del Azufre, a sulfur cave in Tabasco, Mexico, in the state of Tabasco, Mexico (Gordon and Rosen 196

Schlupp, Ingo

51

Distinct optical properties of relativistically degenerate matter  

SciTech Connect

In this paper, we use the collisional quantum magnetohydrodynamic (CQMHD) model to derive the transverse dielectric function of a relativistically degenerate electron fluid and investigate various optical parameters, such as the complex refractive index, the reflection and absorption coefficients, the skin-depth and optical conductivity. In this model we take into accounts effects of many parameters such as the atomic-number of the constituent ions, the electron exchange, electron diffraction effect and the electron-ion collisions. Study of the optical parameters in the solid-density, the warm-dense-matter, the big-planetary core, and the compact star number-density regimes reveals that there are distinct differences between optical characteristics of the latter and the former cases due to the fundamental effects of the relativistic degeneracy and other quantum mechanisms. It is found that in the relativistic degeneracy plasma regime, such as found in white-dwarfs and neutron star crusts, matter possess a much sharper and well-defined step-like reflection edge beyond the x-ray electromagnetic spectrum, including some part of gamma-ray frequencies. It is also remarked that the magnetic field intensity only significantly affects the plasma reflectivity in the lower number-density regime, rather than the high density limit. Current investigation confirms the profound effect of relativistic degeneracy on optical characteristics of matter and can provide an important plasma diagnostic tool for studying the physical processes within the wide scope of quantum plasma regimes be it the solid-density, inertial-confined, or astrophysical compact stars.

Akbari-Moghanjoughi, M. [Department of Physics, Faculty of Sciences, Azarbaijan Shahid Madani University, Tabriz 51745-406 (Iran, Islamic Republic of); International Centre for Advanced Studies in Physical Sciences and Institute for Theoretical Physics, Ruhr University Bochum, Bochum D-44780 (Germany)

2014-06-15T23:59:59.000Z

52

3.2.1 Segmentation, clustering Introduction  

E-Print Network (OSTI)

Dutch publisher, De Telegraaf, uses customer profiling and segmentation to promote advertisement sales. The Telegraaf case is a very good example of this approach. Business problem: promoting advertisement sales De in the survey. Furthermore, the marketeers of De Telegraaf lack a priori knowledge about the target group. So ev

Putten, Peter van der

53

Object Detection Combining Recognition and Segmentation  

E-Print Network (OSTI)

segmentation. There are two main steps in this method: a hypothesis generation step and a verification step. In the top-down hy- pothesis generation step, we design an improved Shape Context feature, which is more. We develop an object detection method combining top-down recog- nition with bottom-up image

Plotkin, Joshua B.

54

SEGMENTATION INDEPENDENT ESTIMATES OF TURBULENCE PARAMETERS  

E-Print Network (OSTI)

SEGMENTATION INDEPENDENT ESTIMATES OF TURBULENCE PARAMETERS G. C. Papanicolaoua, K. Solnab and D, University of Utah, Salt Lake City, UT 84112 cPhillips Laboratory, Kirtland AFB, NM 87117 ABSTRACT We present of the detail coe cients at scale j. The spectrum can therefore be interpreted as representing the energy

Papanicolaou, George C.

55

The Abstract Domain of Segmented Ranking Functions  

E-Print Network (OSTI)

function by abstract in- terpretation. We build our work on their proposed general framework, and we designThe Abstract Domain of Segmented Ranking Functions Caterina Urban ´Ecole Normale Sup´erieure - CNRS - INRIA, Paris, France urban@di.ens.fr Abstract. We present a parameterized abstract domain for proving

Paris-Sud XI, Université de

56

Nested Partitions Using Texture Segmentation V. Lakshmanan  

E-Print Network (OSTI)

Nested Partitions Using Texture Segmentation V. Lakshmanan Coop. Inst. of Meso. Met. Studies of partitioning the pixels of an im- age such that the partitions at one step are wholly nested inside. It is possible to devise a multiscale approach where the partitions in one scale are nested within the partitions

Lakshmanan, Valliappa

57

Determining soft segment structure-property effects in the enhancement of segmented polyurethane performance  

E-Print Network (OSTI)

Liquid Crystalline Elastomer (LCE)-inspired segmented polyurethane elastomers possessing widely different extents of ordering were created to mimic the hierarchical structure of the continuous matrix and superior mechanical ...

Waletzko, Ryan Scott

2009-01-01T23:59:59.000Z

58

A comparison of bistatic scattering from two geologically distinct abyssal hills  

Science Journals Connector (OSTI)

The bistatic scattering characteristics of two geologically distinct abyssal hills located on the western flank of the Mid-Atlantic Ridge known as B ? and C ? are experimentally compared using data acquired with low-frequency towed-array systems at 1 2 convergence zone (?33 km) stand-off. The comparison is significant because the abyssal hills span the two classes of elevated seafloor crust that cover the Mid-Atlantic Ridge. The highly lineated B ? feature is representative of abyssal hills composed of outside corner crust the most commonly occurring category whereas the domed C ? promontory is representative of the rougher low-aspect-ratio abyssal hills composed of inside corner crust. The latter are less common and usually restricted to segment valley margins. The mean biazimuthal scattering distributions of the two abyssal hills each exhibit Lambertian behavior with comparable albedos suggesting that the distinction between abyssal hills composed of differing crust is not significant in modeling long-range reverberation. The adverse effect of using bathymetry that undersamples seafloor projected area in scattering strength analysis is also quantified with data from the B ? ridge. Specifically the use of undersampled bathymetry can lead to significant overestimates in the strength of seafloor scattering.

Nicholas C. Makris

2000-01-01T23:59:59.000Z

59

GEODESIC INTERACTIVE SEGMENTATION IN THE COLOR MONOGENIC SIGNAL Explora Nova,  

E-Print Network (OSTI)

GEODESIC INTERACTIVE SEGMENTATION IN THE COLOR MONOGENIC SIGNAL FRAMEWORK G. Demarcq Explora Nova is based on the computation of geodesic distances within color mono- genic signal (CMS) fields-- Interactive Segmentation, Clifford Alge- bra, Color Monogenic Signal, Geodesic Distances 1. INTRODUCTION

Paris-Sud XI, Université de

60

The segmentation problem in morphology learning Christopher D. Manning  

E-Print Network (OSTI)

learning Christopher D. Manning (1998) The segmentation problem in morphology learning. In D.M.W. Powers

Note: This page contains sample records for the topic "distinct population segment" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Object segmentation and classification using 3-D range camera  

Science Journals Connector (OSTI)

This paper proposes a vision system using a 3-D range camera for scene segmentation and pedestrian classification. The system detects and segments objects in the foreground, measures their distances to the camera, and classifies them into pedestrians ... Keywords: 3-D range image segmentation, Assistive navigation, Feature extraction, Image segmentation evaluation, Object classification, Pedestrian classification, RGB-D image processing, Range/intensity image processing

Xue Wei; Son Lam Phung; Abdesselam Bouzerdoum

2014-01-01T23:59:59.000Z

62

Video segmentation using Metropolis Hastings Algorithm for the VCR operations  

Science Journals Connector (OSTI)

In this paper, we have investigated the video pre-processing and the VCR operations for the Video on Demand (VoD) system. We have proposed a novel technique for the segmentation of the movies using Markov Chain Monte Carlo (MCMC). Our proposed segmentation technique will segment the videos by identifying the scene boundary locations. The objective of this paper is to reduce the accessing time for the new requests of the movies using M-chaining technique and also to reduce the seeking time for the VCR operations using our segmentation technique. We have numerically analysed the existing segmentation techniques with our proposed segmentation technique. We found that our segmentation technique shows the less computational time compared with other segmentation techniques. The performance of the segmentation techniques is measured in terms of Precision as well as Recall and our technique gives more accurate results compared with other segmentation techniques. The VCR functionalities are simulated by applying our segmentation technique and the results of the simulation show less accessing and seeking time. We have also addressed the practical issues of efficient utilisation of overall bandwidth and buffer of the VoD system using our segmentation technique.

R. Ashok Kumar; K. Ganesan

2010-01-01T23:59:59.000Z

63

UNSUPERVISED SEGMENTATION FOR AUTOMATIC DETECTION OF BRAIN TUMORS IN MRI  

E-Print Network (OSTI)

UNSUPERVISED SEGMENTATION FOR AUTOMATIC DETECTION OF BRAIN TUMORS IN MRI A.S. Capelle, O. Alata, C- thod for magnetic resonance images. The aim of this seg- mentation is to divide the brain a pre-segmentation to ex- tract the brain from the head. Then, a second segmentation is done inside

Lefèvre, Sébastien

64

An MRI Segmentation Framework for Brains with Anatomical Marcelinus Prastawa  

E-Print Network (OSTI)

An MRI Segmentation Framework for Brains with Anatomical Deviations Marcelinus Prastawa;ABSTRACT MARCELINUS PRASTAWA: An MRI Segmentation Framework for Brains with Anatomical Deviations (Under the direction of Guido Gerig, Ph.D.) The segmentation of brain Magnetic Resonance (MR) images, where the brain

Whitton, Mary C.

65

A distinct lineage of influenza A virus from bats  

Science Journals Connector (OSTI)

...genes for polypeptides NS1 and NS2 on RNA segment 8 of influenza virus...Colinear and interrupted mRNAs code for...each group, excluding NS1, NS2, M1, and M2 as too short for...Generation of influenza A virus NS2 (NEP) mutants with...

Suxiang Tong; Yan Li; Pierre Rivailler; Christina Conrardy; Danilo A. Alvarez Castillo; Li-Mei Chen; Sergio Recuenco; James A. Ellison; Charles T. Davis; Ian A. York; Amy S. Turmelle; David Moran; Shannon Rogers; Mang Shi; Ying Tao; Michael R. Weil; Kevin Tang; Lori A. Rowe; Scott Sammons; Xiyan Xu; Michael Frace; Kim A. Lindblade; Nancy J. Cox; Larry J. Anderson; Charles E. Rupprecht; Ruben O. Donis

2012-01-01T23:59:59.000Z

66

Segmented lasing tube for high temperature laser assembly  

DOE Patents (OSTI)

A high temperature laser assembly capable of withstanding operating temperatures in excess of 1500.degree. C. is described comprising a segmented cylindrical ceramic lasing tube having a plurality of cylindrical ceramic lasing tube segments of the same inner and outer diameters non-rigidly joined together in axial alignment; insulation of uniform thickness surround the walls of the ceramic lasing tube; a ceramic casing, preferably of quartz, surrounding the insulation; and a fluid cooled metal jacket surrounds the ceramic casing. In a preferred embodiment, the inner surface of each of the ceramic lasing tube segments are provided with a pair of oppositely spaced grooves in the wall thereof parallel to the center axis of the segmented cylindrical ceramic lasing tube, and both of the grooves and the center axis of the segmented cylindrical ceramic lasing tube lie in a common plane, with the grooves in each ceramic lasing tube segment in circumferential alignment with the grooves in the adjoining ceramic lasing tube segments; and one or more ceramic plates, all lying in a common plane to one another and with the central axis of the segmented ceramic lasing tube, are received in the grooves to provide additional wall area in the segmented ceramic lasing tube for collision and return to ground state of metastable metal atoms within the segmented ceramic lasing tube.

Sawicki, Richard H. (Danville, CA); Alger, Terry W. (Tracy, CA); Finucane, Raymond G. (Pleasanton, CA); Hall, Jerome P. (Livermore, CA)

1996-01-01T23:59:59.000Z

67

EIA - Natural Gas Pipeline Network - Interstate Pipelines Segment  

U.S. Energy Information Administration (EIA) Indexed Site

Interstate Natural Gas Pipeline Segment About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 20072008 with selected updates Interstate Natural Gas...

68

Market Segmentation and Energy Efficiency Program Design (2008 CIEE Report)  

Energy.gov (U.S. Department of Energy (DOE))

This paper describes the existing state of market segmentation among Californias electric utilities, with an emphasis on the investor-owned utilities (IOUs).

69

Market Segmentation and Energy Efficiency Program Design | Department...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Design Describe the existing state of market segmentation among California's electric utilities, with an emphasis on the investor-owned utilities. Author: Steve J. Moss Market...

70

Analysis of a kinetic multi-segment foot model part II: Kinetics and clinical implications  

Science Journals Connector (OSTI)

Kinematic multi-segment foot models have seen increased use in clinical and research settings, but the addition of kinetics has been limited and hampered by measurement limitations and modeling assumptions. In this second of two companion papers, we complete the presentation and analysis of a three segment kinetic foot model by incorporating kinetic parameters and calculating joint moments and powers. The model was tested on 17 pediatric subjects (ages 718years) during normal gait. Ground reaction forces were measured using two adjacent force platforms, requiring targeted walking and the creation of two sub-models to analyze ankle, midtarsal, and 1st metatarsophalangeal joints. Targeted walking resulted in only minimal kinematic and kinetic differences compared with walking at self selected speeds. Joint moments and powers were calculated and ensemble averages are presented as a normative database for comparison purposes. Ankle joint powers are shown to be overestimated when using a traditional single-segment foot model, as substantial angular velocities are attributed to the mid-tarsal joint. Power transfer is apparent between the 1st metatarsophalangeal and mid-tarsal joints in terminal stance/pre-swing. While the measurement approach presented here is limited to clinical populations with only minimal impairments, some elements of the model can also be incorporated into routine clinical gait analysis.

Dustin A. Bruening; Kevin M. Cooney; Frank L. Buczek

2012-01-01T23:59:59.000Z

71

A Distinction Technique Between Volcanic And Tectonic Depression Structures  

Open Energy Info (EERE)

Distinction Technique Between Volcanic And Tectonic Depression Structures Distinction Technique Between Volcanic And Tectonic Depression Structures Based On The Restoration Modeling Of Gravity Anomaly- A Case Study Of The Hohi Volcanic Zone, Central Kyushu, Japan Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Distinction Technique Between Volcanic And Tectonic Depression Structures Based On The Restoration Modeling Of Gravity Anomaly- A Case Study Of The Hohi Volcanic Zone, Central Kyushu, Japan Details Activities (0) Areas (0) Regions (0) Abstract: In this study, we propose a numerical modeling technique which restores the gravity anomaly of tectonic origin and identifies the gravity low of caldera origin. The identification is performed just by comparing the restored gravity anomalies with the observed gravity anomalies, thus we

72

A Note on General Adaptation in Populations of Painting Robots  

E-Print Network (OSTI)

A Note on General Adaptation in Populations of Painting Robots Dan Ashlock Mathematics Department is evolved to perform the task of competitively painting the floor of a toroidal room. Two robots are present in any given room and paint us- ing distinct colors. The fitness of a robot is the amount of floor

Ashlock, Dan

73

Energy implications of an aging population  

SciTech Connect

This study provides various demographic, medical, and economic information relative to energy usage on a segment of the population, the elderly, which is growing in absolute numbers and relative population percentage. This growth is expected to continue well into the twenty-first century. The US aging population numbered 3.1 million in 1900, and by 1977 it had climbed to 23.5 million. It can be stated with reasonable certainty that this figure will rise to 31 million in the year 2000 and 43 million in the year 2020. These figures, corresponding to more than 10% of our population, are by no means insignificant. As our fossil-fuel reserves are being depleted and the cost of energy mounts, it becomes apparent that the elderly will become increasingly vulnerable to the energy crisis, primarily beause of their physical tendency to infirmity, their economic and social situation, and their susceptibility to psychological depression. This white paper concentrates on those aspects of aging and the nation's energy problem which are not usually related in our everyday consideration of these as separable problems. It seeks to identify the peculiar energy problems of the aged and to consider alternatives in the solution of these problems in light of modern technology.

Not Available

1980-08-01T23:59:59.000Z

74

A Multiscale Random Field Model for Bayesian Image Segmentation +#  

E-Print Network (OSTI)

appeared as: C. A. Bouman and M. Shapiro, ``A Multiscale Random Field Model for Bayesian Image Segmentation of Electrical Engineering Purdue University West Lafayette, IN 47907­0501 (317) 494­0340 Michael Shapiro US Army and Shapiro have suggested that a good segmentation of a image should separate the image into simple regions

75

Fast, Precise Flattening of Cubic Bzier Segment Offset Curves  

Science Journals Connector (OSTI)

A fast algorithm for generating a polyline approximation (flattening) for the offset curves of a cubic Bzier curve segment is described. It is shown to be more efficient than the standard recursive subdivision method by generating only 70% as many segments, ...

Thomas F. Hain; Sri Venkat R. Racherla; David D. Langan

2004-10-01T23:59:59.000Z

76

Towards Optimal Capacity Segmentation with Hybrid Cloud Pricing  

E-Print Network (OSTI)

and EC2 spot market. Furthermore, we formulate the optimal capacity segmentation strategy as a MarkovTowards Optimal Capacity Segmentation with Hybrid Cloud Pricing Wei Wang, Baochun Li, and Ben Liang markets with different service guarantees. For example, Amazon EC2 prices virtual instances under three

Li, Baochun

77

Towards Optimal Capacity Segmentation with Hybrid Cloud Pricing  

E-Print Network (OSTI)

between periodic auctions and EC2 spot market. Furthermore, we formulate the optimal capacity segmentationTowards Optimal Capacity Segmentation with Hybrid Cloud Pricing Wei Wang, Baochun Li, and Ben Liang priced in multiple markets with different service guarantees. For example, Amazon EC2 prices virtual

Li, Baochun

78

Automatic Segmentation of Neonatal Brain MRI Marcel Prastawa, 2  

E-Print Network (OSTI)

Automatic Segmentation of Neonatal Brain MRI 1 Marcel Prastawa, 2 John Gilmore, 3 Weili Lin, and 1 segmentation method for neonatal MRI. The analysis and study of neonatal brain MRI is of great interest due probabilistic brain atlas to select training samples and to be used as a spatial prior. The method first uses

Prastawa, Marcel

79

Topic Segmentation with Hybrid Document Indexing Irina Matveeva  

E-Print Network (OSTI)

Topic Segmentation with Hybrid Document Indexing Irina Matveeva Department of Computer Science-independent unsuper- vised topic segmentation approach based on hybrid document indexing. Lexical chains have been news, addressed by the Topic Detection and Track- ing (TDT) evaluation project (Wayne, 2000; Allan

Levow, Gina-Anne

80

Cloning DNA sequences from influenza viral RNA segments  

Science Journals Connector (OSTI)

...corresponding to gene segments that code for the nonstructural protein...corresponding to gene seg- ments that code for the nonstructural protein...nonstructural proteins (NS1 and NS2), each RNA segment seems to code for a specific viral component...

C J Lai; L J Markoff; S Zimmerman; B Cohen; J A Berndt; R M Chanock

1980-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "distinct population segment" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Segment Protection for Embedded Systems Using Run-time Checks  

E-Print Network (OSTI)

Segment Protection for Embedded Systems Using Run-time Checks Matthew Simpson Bhuvan Middha Rajeev of un- reliability in many embedded systems. Without the segment-level protection it provides be dangerous and catastrophic in safety-critical systems. The tradi- tional method of testing embedded software

Barua, Rajeev

82

An efficient slap fingerprint segmentation and hand classification algorithm  

Science Journals Connector (OSTI)

This paper proposes an efficient algorithm to segment all fingertips from a slap-image and to identify them into their corresponding indices i.e. index, middle, ring or little finger of left/right hand. Geometrical and spatial properties have been used ... Keywords: Biometrics, Fingerprint segmentation, Knuckle line, Slap fingerprint

Puneet Gupta, Phalguni Gupta

2014-10-01T23:59:59.000Z

83

Audio Segment Retrieval Using a Synthesized HMM Atulya Velivelli  

E-Print Network (OSTI)

Audio Segment Retrieval Using a Synthesized HMM Atulya Velivelli Beckman Institute for Advanced@ifp.uiuc.edu ABSTRACT In this paper, we propose a general approach to audio segment re­ trieval using synthesized HMMs. The approach allows a user to query audio data of any length by one or more example audio seg­ ments and find

Zhai, ChengXiang

84

Audio Segment Retrieval Using a Synthesized HMM Atulya Velivelli  

E-Print Network (OSTI)

Audio Segment Retrieval Using a Synthesized HMM Atulya Velivelli Beckman Institute for Advanced@ifp.uiuc.edu ABSTRACT In this paper, we propose a general approach to audio segment re- trieval using synthesized HMMs. The approach allows a user to query audio data of any length by one or more example audio seg- ments and find

Zhai, ChengXiang

85

Distinct neural systems subserve person and object knowledge  

E-Print Network (OSTI)

Distinct neural systems subserve person and object knowledge Jason P. Mitchell* , Todd F semantic knowledge for different classes of inanimate objects (e.g., tools, musical instruments, and houses). What this work has yet to consider, however, is how conceptual knowledge about people may be organized

Mitchell, Jason

86

All sums of h distinct terms of a sequence  

Science Journals Connector (OSTI)

For A@?Z, we study the gaps in the sequence of all sums of h pairwise distinct elements of A. For example, the following result is proved: for any integer h>=3, there exists A@?Z such that every integer can be uniquely (neglecting the order) represented ...

Yong-Gao Chen, Jin-Hui Fang

2014-10-01T23:59:59.000Z

87

Automatic Distinctive Icons for Desktop Interfaces U. Southern California  

E-Print Network (OSTI)

VisualIDs: Automatic Distinctive Icons for Desktop Interfaces J.P. Lewis CGIT Lab U. Southern.tex Figure 1: "Doodle" style file icons with name clustering. Abstract Although existing GUIs have a sense the form of custom icon assignments) is already possible in current op- erating systems, few if any users

Shahabi, Cyrus

88

Molecular Cell R-Loop Formation Is a Distinctive Characteristic  

E-Print Network (OSTI)

Molecular Cell Article R-Loop Formation Is a Distinctive Characteristic of Unmethylated Human Cp of GC skew leads to the formation of long R loop structures. Furthermore, we show that GC skew and R, we provide evidence that R loop formation protects from DNMT3B1, the primary de novo DNA

Chédin, Frédéric

89

THE SNAPSHOT HUBBLE U-BAND CLUSTER SURVEY (SHUCS). I. SURVEY DESCRIPTION AND FIRST APPLICATION TO THE MIXED STAR CLUSTER POPULATION OF NGC 4041  

SciTech Connect

We present the Snapshot Hubble U-band Cluster Survey (SHUCS), a project aimed at characterizing the star cluster populations of 10 nearby galaxies (d < 23 Mpc, half within Almost-Equal-To 12 Mpc) through new F336W (U-band equivalent) imaging from Wide Field Camera 3, and archival BVI-equivalent data with the Hubble Space Telescope. Completing the UBVI baseline reduces the age-extinction degeneracy of optical colors, thus enabling the measurement of reliable ages and masses for the thousands of clusters covered by our survey. The sample consists chiefly of face-on spiral galaxies at low inclination, in various degrees of isolation (isolated, in group, merging), and includes two active galactic nucleus hosts. This first paper outlines the survey itself, the observational datasets, the analysis methods, and presents a proof-of-concept study of the large-scale properties and star cluster population of NGC 4041, a massive SAbc galaxy at a distance of Almost-Equal-To 23 Mpc, and part of a small grouping of six giant members. We resolve two structural components with distinct stellar populations, a morphology more akin to merging and interacting systems. We also find strong evidence of a truncated, Schechter-type mass function, and a similarly segmented luminosity function. These results indicate that binning must erase much of the substructure present in the mass and luminosity functions, and might account for the conflicting reports on the intrinsic shape of these functions in the literature. We also note a tidal feature in the outskirts of the galaxy in Galaxy Evolution Explorer UV imaging, and follow it up with a comprehensive multi-wavelength study of NGC 4041 and its parent group. We deduce a minor merger as a likely cause of its segmented structure and the observed pattern of a radially decreasing star formation rate. We propose that combining the study of star cluster populations with broadband metrics is not only advantageous, but often easily achievable thorough archival datasets.

Konstantopoulos, I. S. [Australian Astronomical Observatory, P.O. Box 915, North Ryde NSW 1670 (Australia); Smith, L. J. [Space Telescope Science Institute and European Space Agency, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Adamo, A. [Max-Planck-Institut for Astronomy, Koenigstuhl 17, D-69117 Heidelberg (Germany); Silva-Villa, E. [Departement de Physique, de Genie Physique et d'Optique, and Centre de Recherche en Astrophysique du Quebec (CRAQ), Universite Laval, Quebec (Canada); Gallagher, J. S.; Ryon, J. E. [Department of Astronomy, University of Wisconsin-Madison, 5534 Sterling, 475 North Charter Street, Madison WI 53706 (United States); Bastian, N. [Astrophysics Research Institute, Liverpool John Moores University, Egerton Wharf, Birkenhead, CH41 1LD (United Kingdom); Westmoquette, M. S. [European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching bei Muenchen (Germany); Zackrisson, E. [Department of Astronomy, Stockholm University, Oscar Klein Centre, AlbaNova, Stockholm SE-106 91 (Sweden); Larsen, S. S. [Department of Astrophysics/IMAPP, Radboud University Nijmegen, P.O. Box 9010, 6500 GL Nijmegen (Netherlands); Weisz, D. R. [Department of Astronomy, Box 351580, University of Washington, Seattle, WA 98195 (United States); Charlton, J. C., E-mail: iraklis@aao.gov.au [Department of Astronomy and Astrophysics, The Pennsylvania State University, University Park, PA 16802 (United States)

2013-05-15T23:59:59.000Z

90

Bayesian Approach to DNA Segmentation into Regions with Different Average Nucleotide Composition  

Science Journals Connector (OSTI)

We present a new method of segmentation of nucleotide sequences into regions with different average composition. The sequence is modelled as a series of segments; within each segment the sequence is considered as a random sequence of independent and ...

Vsevolod Makeev; Vasily Ramensky; Mikhail S. Gelfand; Mikhail A. Roytberg; Vladimir Tumanyan

2000-05-01T23:59:59.000Z

91

Segmentation strategies in urban retail : an application to nanostores in Bogota  

E-Print Network (OSTI)

This research analyzes how to apply segmentation strategies in the nanostore retail market, focusing on a pilot company located in Bogota, Colombia. This study introduces two segmentation strategies: 1) a sketch segmentation ...

Pan, Xiaodan M. Eng. Massachusetts Institute of Technology

2014-01-01T23:59:59.000Z

92

A GENERIC AUDIO CLASSIFICATION AND SEGMENTATION APPROACH FOR MULTIMEDIA INDEXING AND RETRIEVAL  

E-Print Network (OSTI)

A GENERIC AUDIO CLASSIFICATION AND SEGMENTATION APPROACH FOR MULTIMEDIA INDEXING AND RETRIEVAL the attention on the area of generic and automatic audio classification and segmentation for audio audio classification and global segmentation framework based on automatic audio analysis providing

Gabbouj, Moncef

93

The Seismic response of precast segmental bridge superstructures with bonded tendons  

E-Print Network (OSTI)

Cantilever Construction with CIP Segments .. 27 Figure 2-A-13-46 Otay River Bridge - CIP Pier Table (Courtesy ofconcerns for cast-in-place (CIP) segmental construction

Veletzos, Marc John

2007-01-01T23:59:59.000Z

94

Image Segmentation Using Active Contours and Evidential Distance  

Science Journals Connector (OSTI)

We proposed a new segmentation based on Active Contours (AC) for vector-valued image that incorporates evidential distance. The proposed method combine both Belief Functions (BFs) and probability functions in ...

Foued Derraz; Antonio Pinti

2013-01-01T23:59:59.000Z

95

Segmentation of 3D Meshes through Spectral Clustering  

E-Print Network (OSTI)

2 , 2/ , ji eji D W - = 2/12/1 -- = WLLO L : diagonal matrix of W 's row sums Normalization PG '04Segmentation of 3D Meshes through Spectral Clustering Rong Liu, Hao Zhang GrUVi Lab, Simon Fraser

Zhang, Richard "Hao"

96

3D pose estimation and segmentation using specular cues  

E-Print Network (OSTI)

We present a system for fast model-based segmentation and 3D pose estimation of specular objects using appearance based specular features. We use observed (a) specular reflection and (b) specular flow as cues, which are ...

Raskar, Ramesh

97

Multi-atlas segmentation in head and neck CT scans  

E-Print Network (OSTI)

We investigate automating the task of segmenting structures in head and neck CT scans, to minimize time spent on manual contouring of structures of interest. We focus on the brainstem and left and right parotids. To generate ...

Arbisser, Amelia M

2012-01-01T23:59:59.000Z

98

BPA transmission, letter announcing elimination of segments on...  

NLE Websites -- All DOE Office Websites (Extended Search)

as segments 27, 31, 42 and 44, on the enclosed project map. For the past few months, BPA has been identifying and investigating the potential line routes it will consider in...

99

Temporal Features for Broadcast News Segmentation Michael T. Johnson1  

E-Print Network (OSTI)

Temporal Features for Broadcast News Segmentation Michael T. Johnson1 and Leah H. Jamieson2 1 Department of Electrical and Computer Engineering, Marquette University, Milwaukee, WI mike.johnson

Johnson, Michael T.

100

Energy Management Services for the Industrial Market Segment at TVA  

E-Print Network (OSTI)

experience in the industrial market segment in order to improve the effectiveness of the service to all concerned. Two demonstration programs are in progress which are improving the service. This paper describes the status and accomplishments of TVA...

Hamby, R. E.; Knight, V. R.

1984-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "distinct population segment" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Anatomic Segmentation of Statistical Shape Models Max Hermann1  

E-Print Network (OSTI)

-289, 2010. [4] M. Hermann, A.C. Schunke, T. Schultz, R. Klein: "A Visual Analytics Approach to StudyAnatomic Segmentation of Statistical Shape Models Max Hermann1 , Anja C. Schunke2 , Reinhard Klein1

Eckmiller, Rolf

102

Segmentation and recovery of SHGCs from a real intensity image  

Science Journals Connector (OSTI)

We address the problem of scene segmentation and shape recovery from a single real intensity image. Solving this problem is central to obtaining 3-D scene descriptions in realistic applications where perfect data...

Mourad Zerroug; Ramakant Nevatia

1994-01-01T23:59:59.000Z

103

SKU segmentation strategy for a global retail supply chain  

E-Print Network (OSTI)

The concept of using different supply chain strategies for different products or product families is a fairly simple component of supply chain management. This practice, known as SKU segmentation, is widely used by many ...

Jin, Huiping, M. Eng. Massachusetts Institute of Technology

2014-01-01T23:59:59.000Z

104

Segmentation of Audio Visual Malay Digit Utterances Using Endpoint Detection  

Science Journals Connector (OSTI)

An endpoint detection algorithm is utilised for segmentation of audio video Malay utterances. An audio visual Malay speech database of subjects uttering numerical digits is used. Synchronization between video ...

Mohd Ridzuwary Mohd Zainal; Aini Hussain

2013-01-01T23:59:59.000Z

105

Monitoring transient repolarization segment morphology deviations in mouse ECG  

E-Print Network (OSTI)

This thesis details the design, implementation and validation of a system that facilitates partial automation for detection of anomalous repolarization segment morphologies in the ECG of mice. The technology consists of ...

Oefinger, Matthew Blake, 1976-

2006-01-01T23:59:59.000Z

106

Population, Consumption & the Environment  

E-Print Network (OSTI)

12/11/2009 1 Population, Consumption & the Environment Alex de Sherbinin Center for International of carbon in 2001 · The ecological footprint, a composite measure of consumption measured in hectares kind of consumption is bad for the environment? 2. How are population dynamics and consumption linked

Columbia University

107

Rock climbing sub-worlds: a segmentation study  

E-Print Network (OSTI)

ROCK CLIMBING SUB-WORLDS: A SEGMENTATION STUDY A Thesis by BRANDON WAYNE RAPELJE Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE August 2004 Major Subject: Recreation, Park & Tourism Sciences ROCK CLIMBING SUB-WORLDS: A SEGMENTATION STUDY A Thesis by BRANDON WAYNE RAPELJE Submitted to Texas A&M University in partial fulfillment...

Rapelje, Brandon Wayne

2004-11-15T23:59:59.000Z

108

Genetic and expression analysis of enabled in Drosophila leg segmentation  

E-Print Network (OSTI)

the UAS/GAL4 (Brand and Perrimon, 1993) system gives rise to tarsal segment fusions (Buckles et al. , in preparation). The fusion phenotype is not observed when a form of Abl lacking the kinase activity is over-expressed, hence the kinase function... tested for dominant enhancement of the GOF ab/ fusion phenotype. Seventeen interacting loci were recovered: one copy of the deficiency in that sensitized background was sufficient to give a leg phenotype (tarsal segment fusion, ectopic joints, shorter...

Ramel, Marie-Christine

2012-06-07T23:59:59.000Z

109

Segmentation of speech based on adaptive pitch prediction  

E-Print Network (OSTI)

SEGMENTATION OF SPEECH BASED ON ADAPTIVE PITCH PREDICTION A Thesis by JAN ERIK 8DEGARD Submitted to the 0%ce of Graduate Studies of Texas ARM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August... 1990 Major Subject: Electrical Engineering SEGMENTATION OF SPEECH BASED OiN ADAPTIVE PITCH PREDICTION A Thesis by JAN ERII( 8DEGARD Approved as to style and content, by: Shiping Li (Chair of Committee) D. R. Halverson J. H. Painter (Ivlernber...

dega?rd, Jan Erik

2012-06-07T23:59:59.000Z

110

FAST AND LS TTL DATA BCD TO 7-SEGMENT  

E-Print Network (OSTI)

for the LS48. The circuit accepts 4-bit binary-coded-decimal (BCD) and, depending on the state5-1 FAST AND LS TTL DATA BCD TO 7-SEGMENT DECODER The SN54/74LS48 is a BCD to 7-Segment Decoder are connected in pairs to make BCD data and its complement available to the seven decoding AND-OR-INVERT gates

Glashausser, Charles

111

Population | OpenEI  

Open Energy Info (EERE)

Population Population Dataset Summary Description Total population (in millions) by country, 1980 to 2010. Compiled by Energy Information Administration (EIA). Source EIA Date Released Unknown Date Updated Unknown Keywords EIA Population world Data text/csv icon population_by_country_1980_2010millions.csv (csv, 59.1 KiB) Quality Metrics Level of Review Peer Reviewed Comment Temporal and Spatial Coverage Frequency Time Period 1980 - 2010 License License Other or unspecified, see optional comment below Comment Rate this dataset Usefulness of the metadata Average vote Your vote Usefulness of the dataset Average vote Your vote Ease of access Average vote Your vote Overall rating Average vote Your vote Comments Login or register to post comments If you rate this dataset, your published comment will include your rating.

112

Involvement as a market segmentation strategy: segmenting the United States pleasure travel market with implications for marketing Texas tourism  

E-Print Network (OSTI)

INVOLVEMENT AS A MARKET SEGMENTATION STRATEGY: SEGMENTING THE UNITED STATES PLEASURE TRAVEL MARKET WITH IMPLICATIONS FOR MARKETING TEXAS TOURISM A Thesis by BOBBY JOE JOHNSON Submitted to the Graduate College of Texas ARM University... FOR MARKETZMS TEXAS TOURISM A Thesis by BOBBY JOE JOHNSON Approved as to style and content by Daniel R. Fesenmaier (Chairman of Committee) James Gtribling (Member) Edward Heath (Member) David D. Van Fleet (Member) Thomas . Bonn c sen (Head...

Johnson, Bobby Joe

2012-06-07T23:59:59.000Z

113

Multilocus Sequence Typing Supports the Hypothesis that Cow- and Human-Associated Salmonella Isolates Represent Distinct and Overlapping Populations  

Science Journals Connector (OSTI)

...Golden, CO). County codes are as follows...Nia, Niagara; One, Oneida; Ono, Onondaga...farm) (Table 1). c Counties are depicted in Fig. 1. County codes are as follows...Nia, Niagara; One, Oneida; Ono, Onondaga...

S. D. Alcaine; Y. Soyer; L. D. Warnick; W.-L. Su; S. Sukhnanand; J. Richards; E. D. Fortes; P. McDonough; T. P. Root; N. B. Dumas; Y. Grhn; M. Wiedmann

2006-10-06T23:59:59.000Z

114

IFTrace: Video segmentation of deformable objects using the Image Foresting Transform  

Science Journals Connector (OSTI)

We introduce IFTrace, a method for video segmentation of deformable objects. The algorithm makes minimal assumptions about the nature of the tracked object: basically, that it consists of a few connected regions, and has a well-defined border. The objects ... Keywords: Graph-based image segmentation, Image Foresting Transform, Image/video segmentation, Object delineation, Segmentation/tracking of moving objects

R. Minetto; T. V. Spina; A. X. Falco; N. J. Leite; J. P. Papa; J. Stolfi

2012-02-01T23:59:59.000Z

115

A Robust Heart Sounds Segmentation Module Based on S-Transform  

E-Print Network (OSTI)

1 A Robust Heart Sounds Segmentation Module Based on S-Transform Ali Moukadem1, 3 , Alain Dieterlen presents a new module for heart sounds segmentation based on S-Transform. The heart sounds segmentation process segments the PhonoCardioGram (PCG) signal into four parts: S1 (first heart sound), systole, S2

Boyer, Edmond

116

Automatic segmentation of speakers in broadcast audio material HyoungGook Kim, Thomas Sikora  

E-Print Network (OSTI)

­based and model­based segmentation algorithm. For the measure of the performance we compare the segmentation results of the hybrid method versus metric­based segmentation with both the MPEG­7 standardized features are clustered using a distance measure that measures the similarity of two segments. The advantage

Wichmann, Felix

117

An analysis of decomposition approaches in multi-objectivization via segmentation  

Science Journals Connector (OSTI)

Multi-objectivization via Segmentation (MOS) has been shown to give improved results over other previous multi-objectivization approaches. This paper explores the mechanisms that make different segmentations in MOS successful in the context of the Traveling ... Keywords: Multi-Objectivization via Progressive Segmentation (MOPS), Multi-Objectivization via Segmentation (MOS), Multi-objectivization Via Decomposition (MVD), Traveling Salesman Problem (TSP)

Darrell F. Lochtefeld, Frank W. Ciarallo

2014-05-01T23:59:59.000Z

118

SNAP: A Software Package for User-Guided Geodesic Snake Segmentation  

E-Print Network (OSTI)

segmentation pipeline, including image preprocessing, bubble initializa- tion and parameter control smoothness guarantees stability in t

Gerig, Guido

119

Population Trends and Prospects  

Science Journals Connector (OSTI)

...improve-ments in food availability per person, and today the actual number...population growth. Consequently, food production per person in most developing countries...is no improvement in staple food production, primarily cereal grain, in countries...

W. Parker Mauldin

1980-07-04T23:59:59.000Z

120

Populating the Whole Landscape  

E-Print Network (OSTI)

Every de Sitter vacuum can transition to every other de Sitter vacuum despite any obstacle, despite intervening anti-de Sitter sinks, despite not being connected by an instanton. Eternal inflation populates the whole landscape.

Adam R. Brown; Alex Dahlen

2012-02-19T23:59:59.000Z

Note: This page contains sample records for the topic "distinct population segment" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Bull Trout (Salvelinus Confluentus) Population and Habitat Surveys in the McKenzie and Middle Fork Willamette Basins, 2001 Annual Report.  

SciTech Connect

Prior to 1978, bull trout were commonly known as dolly varden (Salvelinus malma) and were classified into an anadromous and interior form. Cavender (1978) described the interior form as a distinct species, classifying it as Salvelinus confluentus, the bull trout. Bull trout are large char weighing up to 18 kg and growing to over one meter in length (Goetz 1994). They are distinguished by a broad flat head, large downward curving maxillaries that extend beyond the eye, a fleshy knob and a notch in the lower terminus of the snout, and light colored spots normally smaller than the pupil of the eye (Cavender 1978). Bull trout are found throughout northwestern North America from latitude 41{sup o}N to 60{sup o}N. In Oregon, bull trout were once distributed throughout 12 basins in the Klamath and Columbia River systems including the Clackamas, Santiam, McKenzie and Middle Fork Willamette subbasins west of the Cascades (Buchanan et al. 1997). However, it is likely that bull trout have been extirpated from west of the Cascades with the exception of the McKenzie sub-basin. McKenzie River bull trout were a contiguous population from the mouth to Tamolitch Falls prior to 1963. Three populations were isolated following the construction of Cougar and Trail Bridge Reservoirs which include the mainstem McKenzie and tributaries from the mouth to Trail Bridge Reservoir, mainstem McKenzie and tributaries above Trail Bridge Reservoir to Tamolitch Falls, and the South Fork McKenzie and tributaries above Cougar Reservoir. On June 10, 1998 the U.S. Fish and Wildlife Service (USFWS) listed the Columbia River bull trout population segment as Threatened under the federal Endangered Species Act and Buchanan et al. (1997) listed the bull trout population in the mainstem McKenzie as ''of special concern'', the South Fork McKenzie population as ''high risk of extinction,'' and the population above Trail Bridge Reservoir as ''high risk of extinction.'' Bull trout in the Middle Fork Willamette were listed as ''probably extinct.'' Our study area includes the three McKenzie populations, and a reintroduced population in the Middle Fork Willamette and tributaries above Hills Creek Reservoir. We monitored bull trout populations in the McKenzie and Middle Fork Willamette basins using a combination of sampling techniques that include spawning surveys, juvenile trapping, electronic fish counters, and night snorkeling. We continued to reintroduce bull trout fry from Anderson Creek (McKenzie Basin) to the Middle Fork Willamette above Hills Creek Reservoir in an attempt to rehabilitate the bull trout population in the Middle Fork Willamette Basin. By monitoring population trends and determining life history characteristics of bull trout in McKenzie and Middle Fork Willamette basins, we can make informed management decisions that will help maintain long term and sustainable bull trout populations in the upper Willamette Basin.

Taylor, Greg

2003-02-01T23:59:59.000Z

122

Active Fault Segments As Potential Earthquake Sources- Inferences From  

Open Energy Info (EERE)

Active Fault Segments As Potential Earthquake Sources- Inferences From Active Fault Segments As Potential Earthquake Sources- Inferences From Integrated Geophysical Mapping Of The Magadi Fault System, Southern Kenya Rift Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Active Fault Segments As Potential Earthquake Sources- Inferences From Integrated Geophysical Mapping Of The Magadi Fault System, Southern Kenya Rift Details Activities (0) Areas (0) Regions (0) Abstract: Southern Kenya Rift has been known as a region of high geodynamic activity expressed by recent volcanism, geothermal activity and high rate of seismicity. The active faults that host these activities have not been investigated to determine their subsurface geometry, faulting intensity and constituents (fluids, sediments) for proper characterization of tectonic

123

Technical Safety Requirements for the B695 Segment  

SciTech Connect

This document contains Technical Safety Requirements (TSRs) for the Radioactive and Hazardous Waste Management (RHWM) Division's B695 Segment of the Decontamination and Waste Treatment Facility (DWTF) at Lawrence Livermore National Laboratory (LLNL). The TSRs constitute requirements regarding the safe operation of the B695 Segment. The TSRs are derived from the Documented Safety Analysis (DSA) for the B695 Segment (LLNL 2007). The analysis presented there determined that the B695 Segment is a low-chemical hazard, Hazard Category 3, nonreactor nuclear facility. The TSRs consist primarily of inventory limits as well as controls to preserve the underlying assumptions in the hazard analyses. Furthermore, appropriate commitments to safety programs are presented in the administrative controls section of the TSRs. The B695 Segment (B695 and the west portion of B696) is a waste treatment and storage facility located in the northeast quadrant of the LLNL main site. The approximate area and boundary of the B695 Segment are shown in the B695 Segment DSA. Activities typically conducted in the B695 Segment include container storage, lab-packing, repacking, overpacking, bulking, sampling, waste transfer, and waste treatment. B695 is used to store and treat radioactive, mixed, and hazardous waste, and it also contains equipment used in conjunction with waste processing operations to treat various liquid and solid wastes. The portion of the building called Building 696 Solid Waste Processing Area (SWPA), also referred to as B696S in this report, is used primarily to manage solid radioactive, mixed, and hazardous waste. Operations specific to the SWPA include sorting and segregating waste, lab-packing, sampling, and crushing empty drums that previously contained waste. Furthermore, a Waste Packaging Unit will be permitted to treat hazardous and mixed waste. RHWM generally processes LLW with no, or extremely low, concentrations of transuranics (i.e., much less than 100 nCi/g). Wastes processed often contain only depleted uranium and beta- and gamma-emitting nuclides, e.g., {sup 90}Sr, {sup 137}Cs, {sup 3}H. Chapter 5 of the DSA documents the derivation of TSRs and develops the operational limits that protect the safety envelope defined for this facility. The DSA is applicable to the handling of radioactive waste stored and treated in the B695 Segment. Section 5 of the TSR, Administrative Controls, contains those Administrative Controls necessary to ensure safe operation of the B695 Segment. A basis explanation for each of the requirements described in Section 5.5, Specific Administrative Controls is provided in Appendix B. The basis explanation does not constitute an additional requirement, but is intended as an expansion of the logic and reasoning behind development of the requirement. Programmatic Administrative Controls are addressed in Section 5.6. This introduction to the B695 Segment TSRs is not part of the TSR limits or conditions and contains no requirements related to B695 Segment operations or to the safety analyses in the DSA.

Laycak, D

2008-09-11T23:59:59.000Z

124

Modeling of current characteristics of segmented Langmuir probe on DEMETER  

SciTech Connect

We model the current characteristics of the DEMETER Segmented Langmuir probe (SLP). The probe is used to measure electron density and temperature in the ionosphere at an altitude of approximately 700 km. It is also used to measure the plasma flow velocity in the satellite frame of reference. The probe is partitioned into seven collectors: six electrically insulated spherical segments and a guard electrode (the rest of the sphere and the small post). Comparisons are made between the predictions of the model and DEMETER measurements for actual ionospheric plasma conditions encountered along the satellite orbit. Segment characteristics are computed numerically with PTetra, a three-dimensional particle in cell simulation code. In PTetra, space is discretized with an unstructured tetrahedral mesh, thus, enabling a good representation of the probe geometry. The model also accounts for several physical effects of importance in the interaction of spacecraft with the space environment. These include satellite charging, photoelectron, and secondary electron emissions. The model is electrostatic, but it accounts for the presence of a uniform background magnetic field. PTetra simulation results show different characteristics for the different probe segments. The current collected by each segment depends on its orientation with respect to the ram direction, the plasma composition, the magnitude, and the orientation of the magnetic field. It is observed that the presence of light H{sup +} ions leads to a significant increase in the ion current branch of the I-V curves of the negatively polarized SLP. The effect of the magnetic field is demonstrated by varying its magnitude and direction with respect to the reference magnetic field. It is found that the magnetic field appreciably affects the electron current branch of the I-V curves of certain segments on the SLP, whereas the ion current branch remains almost unaffected. PTetra simulations are validated by comparing the computed characteristics and their angular anisotropy with the DEMETER measurements, as simulation results are found to be in good agreement with the measurements.

Imtiaz, Nadia; Marchand, Richard [Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1 (Canada)] [Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1 (Canada); Lebreton, Jean-Pierre [Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), CNRS-Universit d'Orlans, Orlans Cedex (France)] [Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), CNRS-Universit d'Orlans, Orlans Cedex (France)

2013-05-15T23:59:59.000Z

125

Principles of Population Health Science Population Health 795  

E-Print Network (OSTI)

1 Principles of Population Health Science Population Health 795 A course in the Program in Population Health Fall 2012 University of Wisconsin-Madison, School of Medicine and Public Health The lecture in medicine and public health, inequities in health persist. Understanding health on a population level

Sheridan, Jennifer

126

Study on Web Analytics Utilizing Segmentation Knowledge in Business to Business Manufacturer Site  

Science Journals Connector (OSTI)

Abstract Web analytics of B to B sites is mandatory for improving usability and leveraging data for marketing. In this study we tried web analytics by some segmentation and confirmed it is effective. We defined some of the segment models (7 segmentation type) and examined web access using some segments. One of the most important segmentations is registered versus unregistered users and we confirmed user behavior is different with each segment. We confirmed key metrics like bounce rate, referrer, and exit page analysis are especially beneficial for B to B manufacturer site enhancement.

Akiyuki Sekiguchi; Kazuhiko Tsuda

2014-01-01T23:59:59.000Z

127

Population Ecology Philip M. Dixon  

E-Print Network (OSTI)

Population Ecology Philip M. Dixon Department of Statistics Iowa State University 20 December 2001 Population ecology is the discipline in ecology that deals with the structure and dynamics (e.g. growth interacting populations. Population ecology is closely related to other ecological disciplines, e

128

Completion of the gene coding assignments of SA11 rotavirus: gene products of segments 7, 8, and 9.  

Science Journals Connector (OSTI)

...individual translation in vitro. Segment 7 codes for p31 (NS2), segment 8 codes for p33 (NS1), and the segment 9 gene product...individual translation in vitro. Segment 7 codes for p31 (NS2), segment 8 codes for p33 (NS1), and the...

P Kantharidis; M L Dyall-Smith; I H Holmes

1983-10-01T23:59:59.000Z

129

VASCULAR NETWORK SEGMENTATION: AN UNSUPERVISED APPROACH Xavier Descombes1  

E-Print Network (OSTI)

for segmenting vascular network into pathological and normal regions from considering their micro-vessel 3D- esis testing. Results are presented on 3D micro-tomographic images of the brain micro-vascular network for the systematic 3D analysis of supra- cellular structures such as micro-vascular networks [1]. Since the diameters

130

A new FCM-based algorithm of hydrophobic image segmentation  

Science Journals Connector (OSTI)

In order to effectively distinguish the objects from the background, three transition region feature models were taken into account in this paper, including gradient, local complex and local fuzzy variance. Firstly, three transition region feature models ... Keywords: FCM, droplets, hydrophobic image, image segmentation, transition region feature

Yang Qiuxia; Tang Liangrui; Qi Bing; Zhang Jing

2009-08-01T23:59:59.000Z

131

Perfect image segmentation using pulse coupled neural networks  

Science Journals Connector (OSTI)

This paper describes a method for segmenting digital images using pulse coupled neural networks (PCNN). The pulse coupled neuron (PCN) model used in PCNN is a modification of the cortical neuron model of Eckhorn et al. (1990). A single layered laterally ...

G. Kuntimad; H. S. Ranganath

1999-05-01T23:59:59.000Z

132

Method of making segmented pyrolytic graphite sputtering targets  

DOE Patents (OSTI)

Anisotropic pyrolytic graphite wafers are oriented and bonded together such that the graphite's high thermal conductivity planes are maximized along the back surface of the segmented pyrolytic graphite target to allow for optimum heat conduction away from the sputter target's sputtering surface and to allow for maximum energy transmission from the target's sputtering surface. 2 figures.

McKernan, M.A.; Alford, C.S.; Makowiecki, D.M.; Chen, C.W.

1994-02-08T23:59:59.000Z

133

Range Image Segmentation by an Effective Jump-Diffusion Method  

E-Print Network (OSTI)

associated reflectance image in the Bayesian framework. The algorithm works on complex real-world scenes parameter setting. The results are satisfactory in comparison with manual segmentations. Keywords Energy, Hough Transform, Change Point Detection. Departments of Computer Science and Statistics, University

Zhu, Song Chun

134

Range Image Segmentation by an Effective Jump-Diffusion Method  

E-Print Network (OSTI)

and its associated reflectance image in the Bayesian framework. The algorithm works on complex real-world parameter setting. The results are satisfactory in comparison with manual segmentations. Index Terms--Energy accessible to many users. These scanners can capture accurate 3D range images of real-world scenes at large

Zhu, Song Chun

135

Pearling: Stroke segmentation with crusted pearl strings , J. Rossignac1  

E-Print Network (OSTI)

Pearling: Stroke segmentation with crusted pearl strings B. Whited1 , J. Rossignac1 , G. Slabaugh2 of idealized models of networks of strokes (variable width curves) in images. These networks may for example represent roads in an aerial photograph, vessels in a medical scan, or strokes in a drawing. The operator

Rossignac, Jarek

136

A Multiscale Random Field Model for Bayesian Image Segmentation  

E-Print Network (OSTI)

of Electrical Engineering Purdue University West Lafayette, IN 47907-0501 (317) 494-0340 Michael Shapiro US Army Trans. on Image Processing, vol. 3, no. 2, pp. 162-177, March 1994. 1 This manuscript appeared as: C. A. Bouman and M. Shapiro, "A Multiscale Random Field Model for Bayesian Image Segmentation," IEEE Trans

137

Cluster validation for unsupervised stochastic model-based image segmentation  

Science Journals Connector (OSTI)

Image segmentation is an important and early processing stage in many image analysis problems. Often, this must be done in an unsupervised fashion in that training data is not available and the class-conditioned feature vectors must be estimated directly ...

D. A. Langan; J. W. Modestino; Jun Zhang

1998-02-01T23:59:59.000Z

138

Oct 8, 2004 Segmentation of 3D Meshes  

E-Print Network (OSTI)

matrix W using exponential kernel 2 , 2/ , ji eji D W - = 2/12/1 -- = WLLO L : diagonal matrix of W 'sOct 8, 2004 sfsdfsfd 1 Segmentation of 3D Meshes through Spectral Clustering Rong Liu, Hao Zhang Gr

Toronto, University of

139

Design and Optimization of Compatible, Segmented Thermoelectric Generators  

E-Print Network (OSTI)

to rationally select materials for a segmented thermoelectric generator. The thermoelectric potential is used for the exact analytic expressions for materials with temperature dependent thermoelectric properties C H T T = . The thermoelectric material governs how close the efficiency can be to Carnot primarily

140

Brain Mapping Using Topology Graphs Obtained by Surface Segmentation  

E-Print Network (OSTI)

Brain Mapping Using Topology Graphs Obtained by Surface Segmentation Fabien Vivodtzev1 , Lars@ucdavis.edu Summary. Brain mapping is a technique used to alleviate the tedious and time- consuming process of annotating brains by mapping existing annotations from brain atlases to individual brains. We introduce

Linsen, Lars

Note: This page contains sample records for the topic "distinct population segment" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Atlas-Based Hippocampus Segmentation In Alzheimer's Disease and Mild  

E-Print Network (OSTI)

Atlas-Based Hippocampus Segmentation In Alzheimer's Disease and Mild Cognitive Impairment Owen T of Chen to align the images to the Harvard atlas, MNI atlas, and randomly-selected, manually state, registration method, choice of atlas, and man- ual tracing protocol on the agreement between

142

Deformable Organisms and Error Learning for Brain Segmentation  

E-Print Network (OSTI)

Deformable Organisms and Error Learning for Brain Segmentation Gautam Prasad1,2 , Anand A. Joshi3 be easily incorporated into the plan. We validate this framework by creating a plan to locate the brain in 3D magnetic resonance images of the head (skull-stripping). This is important for surgical planning

Boyer, Edmond

143

Simultaneous Segmentation and Filtering via Reduced Graph Cuts  

E-Print Network (OSTI)

provides small graphs while preserving thin structures but do not offer low memory usage when the amount [7,4,13]. In [7], binary energy functions are minimized for the shape fitting problem with graph cutsSimultaneous Segmentation and Filtering via Reduced Graph Cuts N. Lermé F. Malgouyres LAGA UMR CNRS

Malgouyres, François

144

Graph-based Image Segmentation Using Weighted Color Patch  

E-Print Network (OSTI)

Graph-based Image Segmentation Using Weighted Color Patch Xiaofang Wang1 , Chao Zhu1 , Charles a new method based on the weighted color patch to compute the weight of edges in an affinity graph with color patches. Furthermore, we assign both local and global weights adaptively for each pixel in a patch

Paris-Sud XI, Université de

145

Patch-Based Texture Edges and Segmentation , Xiaolei Huang2  

E-Print Network (OSTI)

Patch-Based Texture Edges and Segmentation Lior Wolf1 , Xiaolei Huang2 , Ian Martin1 , and Dimitris for extracting texture edges is introduced. It is based on the combination of two ideas: the patch-based approach is often referred to as "patch- based" since a fragment around each pixel is used in order to compute

Wolf, Lior

146

Patch-based Segmentation of Brain Tissues Nicolas Cordier1  

E-Print Network (OSTI)

Patch-based Segmentation of Brain Tissues Nicolas Cordier1 , Bjoern Menze1,2 , Herv´e Delingette1-channel patches. After patches are extracted from several MR channels for a test case, similar patches are found to these developed for human brain labelling in [1]. A database of multi-channel patches is first built from a set

Paris-Sud XI, Université de

147

Apple Defect Segmentation by Artificial Neural Networks Devrim Unay a  

E-Print Network (OSTI)

Apple Defect Segmentation by Artificial Neural Networks Devrim Unay a Bernard Gosselin a a TCTS Lab-colored apple fruits performed by several artificial neural networks. Pixel-wise classification approach apple defects. 1 Introduction Quality of apple fruits depends on size, color, shape and presence

Dupont, Stéphane

148

Measuring and segmentation in CT data using deformable Vclav Krajcek  

E-Print Network (OSTI)

tomography (CT). We take advantage of long-time research in the area of deformable models. We have developed Snakes, CT, Medical Segmentation, Volume Measurement. 1 INTRODUCTION Computed tomography is a common tool, that temperature of healthy body is about 36,5 C. Higher temperature means that body is fighting with an illness

Pelikan, Josef

149

A Segmental CRF Approach to Large Vocabulary Continuous Speech Recognition  

E-Print Network (OSTI)

-of-the-art in speech recognition systems which is hard to beat. With discriminative training and speaker-adaptation techniques, advanced systems are both efficient and effective. Nevertheless, in spite of the power of current, and the automatic construction of a versatile set of segment-level features. The detector streams operate

Hunt, Galen

150

Semi-Automatic Medical Image Segmentation Lauren O'Donnell  

E-Print Network (OSTI)

Doctor Negrin in Las Palmas de Gran Canaria, Spain, for their enthusiastic participation in evaluation for the pulmonary vein segmentations. Thank you to Dr. Juan Ruiz-Alzola of the University of Las Palmas de Gran Canaria, Spain, for all of his help during preparation of the MICCAI paper based on this thesis. Thanks

151

Transient ST-Segment Episode Detection for ECG Beat Classification  

E-Print Network (OSTI)

Transient ST-Segment Episode Detection for ECG Beat Classification Suma C. Bulusu, Miad Faezipour on the application of signal processing and artificial intelligence to the heart signal known as the ECG. The Electrocardiogram (ECG) is an electrical recording of the heart behavior and is crucial to investigating cardiac

Ng, Vincent

152

Segmentation Conditional Random Fields (SCRFs): A New Approach for  

E-Print Network (OSTI)

Segmentation Conditional Random Fields (SCRFs): A New Approach for Protein Fold Recognition Yan Liu, University of Pittsburgh, PA, USA vanathi@cbmi.pitt.edu Abstract. Protein fold recognition is an important.e. the supersecondary structures or protein folds. There has been significant work on predicting some well-defined types

Carbonell, Jaime

153

A wearable system for multi-segment foot kinetics measurement  

Science Journals Connector (OSTI)

Abstract This study aims to design a wearable system for kinetics measurement of multi-segment foot joints in long-distance walking and to investigate its suitability for clinical evaluations. The wearable system consisted of inertial sensors (3D gyroscopes and 3D accelerometers) on toes, forefoot, hindfoot, and shank, and a plantar pressure insole. After calibration in a laboratory, 10 healthy elderly subjects and 12 patients with ankle osteoarthritis walked 50m twice wearing this system. Using inverse dynamics, 3D forces, moments, and power were calculated in the joint sections among toes, forefoot, hindfoot, and shank. Compared to those we previously estimated for a one-segment foot model, the sagittal and transverse moments and power in the ankle joint, as measured via multi-segment foot model, showed a normalized RMS difference of less than 11%, 14%, and 13%, respectively, for healthy subjects, and 13%, 15%, and 14%, for patients. Similar to our previous study, the coronal moments were not analyzed. Maximaminima values of anterior-posterior and vertical force, sagittal moment, and power in shank-hindfoot and hindfoot-forefoot joints were significantly different between patients and healthy subjects. Except for power, the inter-subject repeatability of these parameters was CMC>0.90 for healthy subjects and CMC>0.70 for patients. Repeatability of these parameters was lower for the forefoot-toes joint. The proposed measurement system estimated multi-segment foot joints kinetics with acceptable repeatability but showed difference, compared to those previously estimated for the one-segment foot model. These parameters also could distinguish patients from healthy subjects. Thus, this system is suggested for outcome evaluations of foot treatments.

H. Rouhani; J. Favre; X. Crevoisier; K. Aminian

2014-01-01T23:59:59.000Z

154

Investigation of dynamic driving cycle effect on the degradation of proton exchange membrane fuel cell by segmented cell technology  

Science Journals Connector (OSTI)

Abstract Durability is one of the most important limiting factors for the commercialization of proton exchange membrane fuel cell (PEMFC). Fuel cells are more vulnerable to degradation under operating conditions as dynamic load cycle or start up/shut down. The purpose of this study is to evaluate influences of driving cycles on the durability of fuel cells through analyzing the degradation mechanism of a segmented cell in real time. This study demonstrates that the performance of the fuel cell significantly decreases after 200 cycles. The segmented cell technology is used to measure the local current density distribution, which shows that the current density at the exit region and the inlet region declines much faster than the other parts. Meanwhile, electro-chemical impedance spectroscopy (EIS) reveals that after 200 cycles the ohmic resistance of fuel cell increases, especially at the cathode, and electro-chemical surface area (ESA) decreases from 392 to 307cm2mg?1. Furthermore, scanning electron microscopy (SEM) images of the membraneelectrode assembly (MEA) in cross-section demonstrate crackle flaw on the surface of the catalyst layer and the delamination of the electrodes from the membrane. Transmission electron microscope (TEM) results also show that the Pt particle size increases distinctly after driving cycles.

R. Lin; F. Xiong; W.C. Tang; L. Tcher; J.M. Zhang; J.X. Ma

2014-01-01T23:59:59.000Z

155

STRAIGHT as a research tool for L2 study: How to manipulate segmental and supra?segmental features  

Science Journals Connector (OSTI)

A morphing algorithm based on STRAIGHT speech manipulation system [Kawahara et. al. ICASSP (2003)] has a potential importance in L2 study since it generates stimulus continuum with quality close to natural speech. The morphing procedure yields an equally spaced continuum in an abstract parameter domain which is spanned by fundamental frequency STRAIGHTs time?frequency representation (a variant of smoothed spectrogram) the periodicity map and the time?frequency coordinate. Instead of manipulating all these parameters at once it is useful to manipulate each parameter independently. This individual parameter manipulation can also be generalized to coupled manipulation by introducing new parameters defined using a set of parameters. This extension enables us to manipulate segmental and supra?segmental features instead of manipulating abstract physical parameters. For example coupling energy envelope fundamental frequency and temporal axis stretching factor yield access to a prosodic feature that is basically supra?segmental. Manipulation of spectral landmark positions yields access to a phonological feature that is basically segmental. A preliminary test results using the right?light continuum sets generated using a STRAIGHT?based method and the Klatt synthesizer will also be presented.

2006-01-01T23:59:59.000Z

156

PEO-containing copolymers as polyurethane soft segments in the development of high performance materials  

E-Print Network (OSTI)

Silk-inspired segmented polyurethanes containing flexible, hydrophilic segments with crystalline and liquid crystalline moieties were developed to mimic the hierarchical morphology of the continuous domain in and the ...

James-Korley, LaShanda Teresa

2005-01-01T23:59:59.000Z

157

The effect of customer segmentation on an inventory system in the presence of supply disruptions  

Science Journals Connector (OSTI)

Customer segmentation is an important marketing tool. Effective customer segmentation helps the enterprises increase profits and improve customer service level. On the other hand, due to possible detrimental consequences, supply disruptions have been ...

Yuerong Chen; Xueping Li

2009-12-01T23:59:59.000Z

158

E-Print Network 3.0 - acute non-st segment Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

cular care for elderly patients with non-ST-segment elevation acute coronary... , Armstrong PW, et al. Acute coronary care in the elderly, part II: ST-segment-elevation...

159

A Segmented Drive System with a Small DC Bus Capacitor | Department...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

-- Washington D.C. apep08su.pdf More Documents & Publications A Segmented Drive Inverter Topology with a Small DC Bus Capacitor A Segmented Drive Inverter Topology with a...

160

E-Print Network 3.0 - atlas-based automatic segmentation Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

for: atlas-based automatic segmentation Page: << < 1 2 3 4 5 > >> 1 Robust atlas-based brain segmentation using multi-structure confidence-weighted registration Summary: Robust...

Note: This page contains sample records for the topic "distinct population segment" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

E-Print Network 3.0 - anterior segment manifestations Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

as the llnterior bllsal segment adductors, but originates on the. anterior side of the vertical... of the basal segment ant.eriorly, t.hus ... Source: National Oceanic and...

162

Stability of an Uncooled Segment of a High-Temperature Superconductor  

Science Journals Connector (OSTI)

If the level of a liquid cryogen inadvertently falls below the top of a magnet winding, it may expose a segment of the conductor. Depending on the length of the uncooled segment and on how the matrix resistivi...

Lawrence Dresner

1994-01-01T23:59:59.000Z

163

E-Print Network 3.0 - anterior eye segment Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Segment OCT system Sept 07-Present Advisor: Prof. Geunyoung Yoon, University... , Electromagnetism, Nonlinear optics, Quantum mechanics, Microscopy, ... Source: Yoon, Geunyoung -...

164

Video Object Segmentation through Spatially Accurate and Temporally Dense Extraction of Primary Object Regions  

E-Print Network (OSTI)

Video Object Segmentation through Spatially Accurate and Temporally Dense Extraction of Primary primary object segments in videos in the `object proposal' domain. The extracted primary object regions are then used to build object models for optimized video segmentation. The proposed approach has several

Wu, Shin-Tson

165

AN ATLAS-BASED DEEP BRAIN STRUCTURE SEGMENTATION METHOD: FROM COARSE POSITIONING TO FINE SHAPING  

E-Print Network (OSTI)

AN ATLAS-BASED DEEP BRAIN STRUCTURE SEGMENTATION METHOD: FROM COARSE POSITIONING TO FINE SHAPING Segmentation of deep brain structures is a challenging task for MRI images due to blurry structure boundaries brain structures and determine an optimal sequence for the structure- by-structure segmentation. After

Chung, Albert C. S.

166

Atlas-Based Under-Segmentation Christian Wachinger1,2  

E-Print Network (OSTI)

Atlas-Based Under-Segmentation Christian Wachinger1,2 and Polina Golland1 1 Computer Science the widespread, but rarely discussed, tendency of atlas-based segmentation to under-segment the organs suggested by the atlas. We propose a generative model that corrects for this effect by learning

Golland, Polina

167

Difficulties of T1 brain MRI segmentation techniques M S. Atkins*a  

E-Print Network (OSTI)

: brain segmentation, T1-head MRI, IBSR data 1. INTRODUCTION We are interested in segmenting the brain in T1-weighted head scans to find the perimeter of the brain cortex, which is useful for functional MRI , is an automatic brain segmentation algorithm for MRI head scans. In the algorithm, a lower intensity threshold, t2

Orchard, Jeffery J.

168

HEART SEGMENTATION WITH AN ITERATIVE CHAN-VESE OLIVIER ROUSSEAU, YVES BOURGAULT  

E-Print Network (OSTI)

HEART SEGMENTATION WITH AN ITERATIVE CHAN-VESE ALGORITHM OLIVIER ROUSSEAU, YVES BOURGAULT Abstract. This paper presents 2D and 3D applications of the Chan-Vese model to heart and trachea segmentation. We is to segment the heart muscle from high resolution CT scans of the thorax and to produce meshes

Paris-Sud XI, Université de

169

Segment 8 of the influenza virus genome is unique in coding for two polypeptides  

Science Journals Connector (OSTI)

...genome segment 8 of influenza virus codes for NS2. MATERIALS AND METHODS Viruses...above evidence that a separate mRNA codes for NS2 indi- cate that RNA segment 8...determining which genome segment codes for NS2. By examining recombinants with...

R A Lamb; P W Choppin

1979-01-01T23:59:59.000Z

170

A FUZZY APPROACH TOWARDS PERCEPTUAL CLASSIFICATION AND SEGMENTATION OF MP3/AAC AUDIO  

E-Print Network (OSTI)

A FUZZY APPROACH TOWARDS PERCEPTUAL CLASSIFICATION AND SEGMENTATION OF MP3/AAC AUDIO Serkan a novel perceptual based fuzzy approach towards classification and segmentation for MP3 and AAC audio in the compressed domain. The input audio is split into segments, which are classified as speech, music, fuzzy

Gabbouj, Moncef

171

ROBUST AUDIO SPEAKER SEGMENTATION USING ONE CLASS SVMS Hachem Kadri1  

E-Print Network (OSTI)

ROBUST AUDIO SPEAKER SEGMENTATION USING ONE CLASS SVMS Hachem Kadri1 , Manuel Davy2 , Asma Rabaoui1.kadri@gmail.com, Manuel.Davy@inria.fr ABSTRACT This paper presents a new technique for segmenting an audio stream in various tasks such as automatic transcription of radio broadcast news and audio indexing. The segmentation

Paris-Sud XI, Université de

172

The role of early fundamental frequency rises and elbows in French word segmentation  

Science Journals Connector (OSTI)

The study examined intonational cues to word beginnings in French. French has an optional ''early rise'' in fundamental frequency (F"0) starting at the beginning of a content word. The role of this rise in segmentation by human listeners had previously ... Keywords: French, Intonation, Prosody, Speech segmentation, Word segmentation

Pauline Welby

2007-01-01T23:59:59.000Z

173

Population genetic structure and connectivity of the harmful dinoflagellate Alexandrium minutum in the Mediterranean Sea  

Science Journals Connector (OSTI)

...between distinct areas of the Mediterranean basin. To the best of our knowledge, this study...25 Unal, E. , and A. Buckling 2010 Basin-scale population genetic structure of...application to the Southern California Bight. J. Geophys. Res. 114, C10026. 10...

2012-01-01T23:59:59.000Z

174

Cohort variation, climate effects and population dynamics in a short-lived lizard  

E-Print Network (OSTI)

the immediate and delayed effects of climate condi- tions (temperature and rainfall), and predicted consequences and temperature influenced distinct life-history traits and the periods of gesta- tion and early juvenile life history, rainfall, reptiles, temperature Introduction An accurate description of population trajectories

Le Galliard, Jean-François

175

Neutron Interactions as Seen by A Segmented Germanium Detector  

E-Print Network (OSTI)

The GERmanium Detector Array, GERDA, is designed for the search for ``neutrinoless double beta decay'' (0-nu-2-beta) with germanium detectors enriched in Ge76. An 18-fold segmented prototype detector for GERDA Phase II was exposed to an AmBe neutron source to improve the understanding of neutron induced backgrounds. Neutron interactions with the germanium isotopes themselves and in the surrounding materials were studied. Segment information is used to identify neutron induced peaks in the recorded energy spectra. The Geant4 based simulation package MaGe is used to simulate the experiment. Though many photon peaks from germanium isotopes excited by neutrons are correctly described by Geant4, some physics processes were identified as being incorrectly treated or even missing.

I. Abt; A. Caldwell; K. Kroeninger; J. Liu; X. Liu; B. Majorovits

2007-11-14T23:59:59.000Z

176

Segmented saddle-shaped passive stabilization conductors for toroidal plasmas  

DOE Patents (OSTI)

A large toroidal vacuum chamber for plasma generation and confinement is lined with a toroidal blanket for shielding using modules segmented in the toroidal direction. To provide passive stabilization in the same manner as a conductive vacuum chamber wall, saddle-shaped conductor loops are provided on blanket modules centered on a midplane of the toroidal chamber with horizontal conductive bars above and below the midplane, and vertical conductive legs on opposite sides of each module to provide return current paths between the upper and lower horizontal conductive bars. The close proximity of the vertical legs provided on adjacent modules without making physical contact cancel the electromagnetic field of adjacent vertical legs. The conductive bars spaced equally above and below the midplane simulate toroidal conductive loops or hoops that are continuous, for vertical stabilization of the plasma even though they are actually segmented. 5 figs.

Leuer, J.A.

1990-05-01T23:59:59.000Z

177

Temporal video segmentation using a colour-texture histogram  

Science Journals Connector (OSTI)

We propose a new histogram generation method from the HSV colour space and show how it can be effectively used for temporal video segmentation. In our approach, combined human visual perception of colour and texture is captured in a single feature vector. Relative distribution of grey levels represents texture information while that of hue values represents colour information. This method shows high recall and precision of shot boundary detection in content-based video retrieval applications.

A. Vadivel; Shamik Sural; A.K. Majumdar

2008-01-01T23:59:59.000Z

178

Segmented vs conventional numerals: legibility and long term retention  

E-Print Network (OSTI)

the environmental chamber. Sub jects The subjects were thirty male students between the ages of 1g and 27 from the Industrial Engineering department at Texas A&M University. Subjects were divided into three groups of 10. Procedure Exposure time and number... December 1971 Ma]or Subject: Industrial Engineering SEGMENTED VS CONVENTIONAL NUMERALS: LEGIBILITY AND LONG TERM RETENTION A Thesis STEVE EDGAR HILL Approved as to style and content by: Elias Chairman of Committee) r. A. W. ortham (Head...

Hill, Steve Edgar

1971-01-01T23:59:59.000Z

179

Combination therapy with vemurafenib (PLX4032/RG7204) and metformin in melanoma cell lines with distinct driver mutations  

E-Print Network (OSTI)

and metformin in melanoma cell lines with distinct drivermalignant melanoma cell line. Nature 1984, 311:671-673. 2.and metformin in melanoma cell lines with distinct driver

2011-01-01T23:59:59.000Z

180

Population and Climate Change:Population and Climate Change: Coupling Population Models withCoupling Population Models with  

E-Print Network (OSTI)

Coupling Population Models with Earth System ModelsEarth System Models Eugenia Kalnay, Safa Motesharrei, Jorge Rivas Change: Fully Coupling Population and Earth System Models" My research at the U. of Maryland #12

Kalnay, Eugenia

Note: This page contains sample records for the topic "distinct population segment" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Retina Lesion and Microaneurysm Segmentation using Morphological Reconstruction Methods with Ground-Truth Data  

SciTech Connect

In this work we report on a method for lesion segmentation based on the morphological reconstruction methods of Sbeh et. al. We adapt the method to include segmentation of dark lesions with a given vasculature segmentation. The segmentation is performed at a variety of scales determined using ground-truth data. Since the method tends to over-segment imagery, ground-truth data was used to create post-processing filters to separate nuisance blobs from true lesions. A sensitivity and specificity of 90% of classification of blobs into nuisance and actual lesion was achieved on two data sets of 86 images and 1296 images.

Karnowski, Thomas Paul [ORNL; Tobin Jr, Kenneth William [ORNL; Chaum, Edward [ORNL; Muthusamy Govindasamy, Vijaya Priya [ORNL

2009-09-01T23:59:59.000Z

182

Retina Lesion and Microaneurysm Segmentation using Morphological Reconstruction Methods with Ground-Truth Data  

SciTech Connect

In this work we report on a method for lesion segmentation based on the morphological reconstruction methods of Sbeh et. al. We adapt the method to include segmentation of dark lesions with a given vasculature segmentation. The segmentation is performed at a variety of scales determined using ground-truth data. Since the method tends to over-segment imagery, ground-truth data was used to create post-processing filters to separate nuisance blobs from true lesions. A sensitivity and specificity of 90% of classification of blobs into nuisance and actual lesion was achieved on two data sets of 86 images and 1296 images.

Karnowski, Thomas Paul [ORNL] [ORNL; Govindaswamy, Priya [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Tobin Jr, Kenneth William [ORNL] [ORNL; Chaum, Edward [University of Tennessee, Knoxville (UTK)] [University of Tennessee, Knoxville (UTK); Abramoff, M.D. [University of Iowa] [University of Iowa

2008-01-01T23:59:59.000Z

183

Large-scale experimental landscapes reveal distinctive effects of patch shape and connectivity on arthropod communities.  

SciTech Connect

The size, shape, and isolation of habitat patches can affect organism behavior and population dynamics, but little is known about the relative role of shape and connectivity in affecting ecological communities at large spatial scales. Using six sampling sessions from July 2001 until August 2002, we collected 33,685 arthropods throughout seven 12-ha experimental landscapes consisting of clear-cut patches surrounded by a matrix of mature pine forest. Patches were explicitly designed to manipulate connectivity (via habitat corridors) independently of area and edge effects. We found that patch shape, rather than connectivity, affected ground-dwelling arthropod richness and beta diversity (i.e. turnover of genera among patches). Arthropod communities contained fewer genera and exhibited less turnover in high-edge connected and high-edge unconnected patches relative to low-edge unconnected patches of similar area. Connectivity, rather than patch shape, affected the evenness of ground-dwelling arthropod communities; regardless of patch shape, high-edge connected patches had lower evenness than low- or high-edge unconnected patches. Among the most abundant arthropod orders, increased richness in low-edge unconnected patches was largely due to increased richness of Coleoptera, whereas Hymenoptera played an important role in the lower evenness in connected patches and patterns of turnover. These findings suggest that anthropogenic habitat alteration can have distinct effects on ground-dwelling arthropod communities that arise due to changes in shape and connectivity. Moreover, this work suggests that corridors, which are common conservation tools that change both patch shape and connectivity, can have multiple effects on arthropod communities via different mechanisms, and each effect may alter components of community structure.

Orrock, John, L.; Curler, Gregory, R.; Danielson, Brent, J.; Coyle, David. R.

2011-09-14T23:59:59.000Z

184

E-Print Network 3.0 - analysis reveal distinct Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

are revealed; suggestions... of Balkan idioms (past and present) were analyzed in terms of Jakobsonian distinctive features. Various... quantitatively has been devised. The...

185

E-Print Network 3.0 - analysis reveals distinct Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

are revealed; suggestions... of Balkan idioms (past and present) were analyzed in terms of Jakobsonian distinctive features. Various... quantitatively has been devised. The...

186

Toward 150 Years of Distinction & A New Gold Standard of University Performance  

E-Print Network (OSTI)

unique history and distinctive strengths, refining our strategies, and reinventing our institution to continuously enhance our worth. Universities are the wellspring of the knowledge economy, bringing a high

Ida, Nathan

187

Segmental isotope-labeling of the intrinsically disordered protein PQBP1  

Science Journals Connector (OSTI)

Abstract Polyglutamine tract-binding protein 1 (PQBP1) is an intrinsically disordered protein abundantly expressed in the brain. Mutations in the PQBP1 gene are causative for X-linked mental retardation disorders. Here, we investigated the structure of the C-terminal segment within the context of full-length PQBP1. We produced a segmentally isotope-labeled PQBP1 composed of a non-labeled segment (residues 1219; N-segment) and a 13C/15N-labeled segment (residues 220265; C-segment). Our results demonstrate that the segmental isotope-labeling combined with NMR spectroscopy is useful for detecting a very weak intra-molecular interaction in an intrinsically disordered protein.

Yuko Nabeshima; Mineyuki Mizuguchi; Asagi Kajiyama; Hitoshi Okazawa

2014-01-01T23:59:59.000Z

188

Combining multiple FDG-PET radiotherapy target segmentation methods to reduce the effect of variable performance of individual segmentation methods  

SciTech Connect

Purpose: Many approaches have been proposed to segment high uptake objects in 18F-fluoro-deoxy-glucose positron emission tomography images but none provides consistent performance across the large variety of imaging situations. This study investigates the use of two methods of combining individual segmentation methods to reduce the impact of inconsistent performance of the individual methods: simple majority voting and probabilistic estimation. Methods: The National Electrical Manufacturers Association image quality phantom containing five glass spheres with diameters 13-37 mm and two irregularly shaped volumes (16 and 32 cc) formed by deforming high-density polyethylene bottles in a hot water bath were filled with 18-fluoro-deoxyglucose and iodine contrast agent. Repeated 5-min positron emission tomography (PET) images were acquired at 4:1 and 8:1 object-to-background contrasts for spherical objects and 4.5:1 and 9:1 for irregular objects. Five individual methods were used to segment each object: 40% thresholding, adaptive thresholding, k-means clustering, seeded region-growing, and a gradient based method. Volumes were combined using a majority vote (MJV) or Simultaneous Truth And Performance Level Estimate (STAPLE) method. Accuracy of segmentations relative to CT ground truth volumes were assessed using the Dice similarity coefficient (DSC) and the symmetric mean absolute surface distances (SMASDs). Results: MJV had median DSC values of 0.886 and 0.875; and SMASD of 0.52 and 0.71 mm for spheres and irregular shapes, respectively. STAPLE provided similar results with median DSC of 0.886 and 0.871; and median SMASD of 0.50 and 0.72 mm for spheres and irregular shapes, respectively. STAPLE had significantly higher DSC and lower SMASD values than MJV for spheres (DSC, p < 0.0001; SMASD, p= 0.0101) but MJV had significantly higher DSC and lower SMASD values compared to STAPLE for irregular shapes (DSC, p < 0.0001; SMASD, p= 0.0027). DSC was not significantly different between 128 Multiplication-Sign 128 and 256 Multiplication-Sign 256 grid sizes for either method (MJV, p= 0.0519; STAPLE, p= 0.5672) but was for SMASD values (MJV, p < 0.0001; STAPLE, p= 0.0164). The best individual method varied depending on object characteristics. However, both MJV and STAPLE provided essentially equivalent accuracy to using the best independent method in every situation, with mean differences in DSC of 0.01-0.03, and 0.05-0.12 mm for SMASD. Conclusions: Combining segmentations offers a robust approach to object segmentation in PET. Both MJV and STAPLE improved accuracy and were robust against the widely varying performance of individual segmentation methods. Differences between MJV and STAPLE are such that either offers good performance when combining volumes. Neither method requires a training dataset but MJV is simpler to interpret, easy to implement and fast.

McGurk, Ross J. [Medical Physics Graduate Program, Duke University, Durham, North Carolina 27705 (United States); Bowsher, James; Das, Shiva K. [Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina 27705 (United States); Lee, John A [Molecular Imaging and Experimental Radiotherapy Unit, Universite Catholique de Louvain, 1200 Brussels (Belgium)

2013-04-15T23:59:59.000Z

189

Every invertible matrix is diagonally equivalent to a matrix with distinct eigenvalues  

E-Print Network (OSTI)

Every invertible matrix is diagonally equivalent to a matrix with distinct eigenvalues Man-Duen Choi , Zejun Huang , Chi-Kwong Li , and Nung-Sing Sze§ Abstract We show that for every invertible n?n complex matrix A there is an n?n diagonal invertible D such that AD has distinct eigenvalues. Using

Li, Chi-Kwong

190

AUDIO SEGMENT RETRIEVAL USING A SHORT DURATION EXAMPLE QUERY Atulya Velivelli, ChengXiang Zhai, and Thomas S. Huang  

E-Print Network (OSTI)

AUDIO SEGMENT RETRIEVAL USING A SHORT DURATION EXAMPLE QUERY Atulya Velivelli, ChengXiang Zhai propose a general approach to audio segment re- trieval using a synthesized HMM. The approach allows a user to query audio data by an example audio segment of a short dura- tion and find similar segments

Zhai, ChengXiang

191

DOE Launches First Segment of its Next-Generation Nationwide Network to  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

First Segment of its Next-Generation Nationwide First Segment of its Next-Generation Nationwide Network to Support Scientific Research Efforts DOE Launches First Segment of its Next-Generation Nationwide Network to Support Scientific Research Efforts May 30, 2007 - 1:24pm Addthis WASHINGTON, DC- The U.S. Department of Energy's (DOE) Office of Science and Internet2 announced today that the first segment of a next-generation, nationwide network has gone live, marking a key step in significantly upgrading networking services to thousands of scientific researchers across the country and around the world. The first complete national ring of DOE's Energy Sciences Network (ESnet4) will be rolled out segment by segment from the east coast to the west coast and is expected to be fully operational by September, 2007.

192

Proximity graphs based multi-scale image segmentation  

SciTech Connect

We present a novel multi-scale image segmentation approach based on irregular triangular and polygonal tessellations produced by proximity graphs. Our approach consists of two separate stages: polygonal seeds generation followed by an iterative bottom-up polygon agglomeration into larger chunks. We employ constrained Delaunay triangulation combined with the principles known from the visual perception to extract an initial ,irregular polygonal tessellation of the image. These initial polygons are built upon a triangular mesh composed of irregular sized triangles and their shapes are ad'apted to the image content. We then represent the image as a graph with vertices corresponding to the polygons and edges reflecting polygon relations. The segmentation problem is then formulated as Minimum Spanning Tree extraction. We build a successive fine-to-coarse hierarchy of irregular polygonal grids by an iterative graph contraction constructing Minimum Spanning Tree. The contraction uses local information and merges the polygons bottom-up based on local region-and edge-based characteristics.

Skurikhin, Alexei N [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

193

DISTINCT CHEMICAL REGIONS IN THE ''PRESTELLAR'' INFRARED DARK CLOUD G028.23-00.19  

SciTech Connect

We have observed the Infrared Dark Cloud (IRDC) G028.23-00.19 at 3.3 mm using the Combined Array for Research in Millimeter-wave Astronomy. In its center, the IRDC hosts one of the most massive ({approx}1520 M{sub Sun }) quiescent, cold (12 K) clumps known (MM1). The low temperature, high NH{sub 2}D abundance, narrow molecular line widths, and absence of embedded infrared sources (from 3.6 to 70 {mu}m) indicate that the clump is likely prestellar. Strong SiO emission with broad line widths (6-9 km s{sup -1}) and high abundances ((0.8-4) Multiplication-Sign 10{sup -9}) is detected in the northern and southern regions of the IRDC, unassociated with MM1. We suggest that SiO is released to the gas phase from the dust grains through shocks produced by outflows from undetected intermediate-mass stars or clusters of low-mass stars deeply embedded in the IRDC. A weaker SiO component with narrow line widths ({approx}2 km s{sup -1}) and low abundances (4.3 Multiplication-Sign 10{sup -11}) is detected in the center-west region, consistent with either a ''subcloud-subcloud'' collision or an unresolved population of a few low-mass stars. We report widespread CH{sub 3}OH emission throughout the whole IRDC and the first detection of extended narrow methanol emission ({approx}2 km s{sup -1}) in a cold, massive prestellar clump (MM1). We suggest that the most likely mechanism releasing methanol into the gas phase in such a cold region is the exothermicity of grain-surface reactions. HN{sup 13}C reveals that the IRDC is actually composed of two distinct substructures ({sup s}ubclouds{sup )} separated in velocity space by {approx}1.4 km s{sup -1}. The narrow SiO component arises where the subclouds overlap. The spatial distribution of C{sub 2}H resembles that of NH{sub 2}D, which suggests that C{sub 2}H also traces cold gas in this IRDC.

Sanhueza, Patricio; Jackson, James M. [Institute for Astrophysical Research, Boston University, Boston, MA 02215 (United States); Foster, Jonathan B. [Yale Center for Astronomy and Astrophysics, Yale University, New Haven, CT 06520 (United States); Jimenez-Serra, Izaskun [European Southern Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching (Germany); Dirienzo, William J. [Department of Astronomy, University of Virginia, P.O. Box 3818, Charlottesville, VA 22903 (United States); Pillai, Thushara, E-mail: patricio@bu.edu [Caltech, MC 249-17, 1200 East California Boulevard, Pasadena, CA 91125 (United States)

2013-08-20T23:59:59.000Z

194

Using watershed segmentation in robot motion Jur P. van den Berg Mark H. Overmars  

E-Print Network (OSTI)

Using watershed segmentation in robot motion planning Jur P. van den Berg Mark H. Overmars Institute of Information and Computing Sciences Utrecht University, The Netherlands Email: {berg, markov

van den Berg, Jur

195

Spherical cloaking using nonlinear transformations for improved segmentation into concentric isotropic coatings  

E-Print Network (OSTI)

Two novel classes of spherical invisibility cloaks based on nonlinear transformation have been studied. The cloaking characteristics are presented by segmenting the nonlinear transformation based spherical cloak into ...

Hu, Li

196

Robust Thin-Film Generator Based on Segmented Contact-Electrification for Harvesting Wind Energy  

Science Journals Connector (OSTI)

Robust Thin-Film Generator Based on Segmented Contact-Electrification for Harvesting Wind Energy ... energies in a wide range of forms. ...

Xian Song Meng; Guang Zhu; Zhong Lin Wang

2014-05-13T23:59:59.000Z

197

Space, Health and Population Economics  

E-Print Network (OSTI)

Space, Health SHaPE and Population Economics Changing Demographics and Immigration: Implications for IndianaImplications for Indiana Brigitte Waldorf, Purdue University Farm Policy Study Group b 20 07 December 2010 #12;Space, Health SHaPE and Population Economics America is ... ... Aging #12;Space, Health

198

POPULATION GEOGRAPHY Instructor: Dr. Carr  

E-Print Network (OSTI)

in a year · Crude rates may be misleading: - e.g., CDR, US (8) vs. Mexico (5) -What's going on here? -Are: #12;HOW DOES POPULATION CHANGE? #12;Population Change = Fertility ­ Mortality +/- Migration #12;Crude Birth Rate (CBR): Births/1000 individuals in a year Crude Death Rate (CDR): Deaths/1000 individuals

Lopez-Carr, David

199

Energy demand and population changes  

SciTech Connect

Since World War II, US energy demand has grown more rapidly than population, so that per capita consumption of energy was about 60% higher in 1978 than in 1947. Population growth and the expansion of per capita real incomes have led to a greater use of energy. The aging of the US population is expected to increase per capita energy consumption, despite the increase in the proportion of persons over 65, who consume less energy than employed persons. The sharp decline in the population under 18 has led to an expansion in the relative proportion of population in the prime-labor-force age groups. Employed persons are heavy users of energy. The growth of the work force and GNP is largely attributable to the growing participation of females. Another important consequence of female employment is the growth in ownership of personal automobiles. A third factor pushing up labor-force growth is the steady influx of illegal aliens.

Allen, E.L.; Edmonds, J.A.

1980-12-01T23:59:59.000Z

200

TWO POPULATIONS OF GAMMA-RAY BURST RADIO AFTERGLOWS  

SciTech Connect

The detection rate of gamma-ray burst (GRB) afterglows is ?30% at radio wavelengths, much lower than in the X-ray (?95%) or optical (?70%) bands. The cause of this low radio detection rate has previously been attributed to limited observing sensitivity. We use visibility stacking to test this idea, and conclude that the low detection rate is instead due to two intrinsically different populations of GRBs: radio-bright and radio-faint. We calculate that no more than 70% of GRB afterglows are truly radio-bright, leaving a significant population of GRBs that lack a radio afterglow. These radio-bright GRBs have higher gamma-ray fluence, isotropic energies, X-ray fluxes, and optical fluxes than the radio-faint GRBs, thus confirming the existence of two physically distinct populations. We suggest that the gamma-ray efficiency of the prompt emission is responsible for the difference between the two populations. We also discuss the implications for future radio and optical surveys.

Hancock, P. J.; Gaensler, B. M.; Murphy, T., E-mail: Paul.Hancock@Sydney.edu.au [Also at Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), The University of Sydney, Sydney, NSW 2006, Australia. (Australia)

2013-10-20T23:59:59.000Z

Note: This page contains sample records for the topic "distinct population segment" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
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to obtain the most current and comprehensive results.


201

Abstract --Securing a Grid environment presents a distinctive set of challenges. This paper groups the activities  

E-Print Network (OSTI)

1 Abstract -- Securing a Grid environment presents a distinctive set of challenges. This paper the security requirements of Grids more completely. Index Terms -- Grid security, authentication, authorization, trust management, secure communication, security policy I. INTRODUCTION The goal of Grid Computing

202

Distinction in Research and Creative Works Electrical and Computer Engineering Department  

E-Print Network (OSTI)

Distinction in Research and Creative Works Electrical and Computer Engineering Department of the curriculum. In the Electrical and Computer Engineering Department, students conduct research in computer engineering, neuroengineering, photonics and nanoengineering, and systems. Our students have had much external

203

QUANTUM ALGORITHMS FOR ELEMENT DISTINCTNESS HARRY BUHRMAN, CHRISTOPH DURR, MARK HEILIGMAN, PETER HYER,  

E-Print Network (OSTI)

QUANTUM ALGORITHMS FOR ELEMENT DISTINCTNESS HARRY BUHRMAN, CHRISTOPH D¨URR, MARK HEILIGMAN§, PETER 6111, Fort George G. Meade, MD 20755, USA. Email: mheilig@zombie.ncsc.mil. ¶Dept. of Comp. Sci

Fondements et Applications, Université Paris 7

204

Robot assisted facial expressions with segmented shape memory alloy actuators  

Science Journals Connector (OSTI)

This paper introduces a robotic technology-based supporting device, the robot mask, to enhance facial expressiveness and support physiotherapy for facial paralysed persons. The wearable device, which consists of shape memory alloy (SMA)-based linear actuators, functions by pulling the facial skin towards anatomically selected directions. Since facial expressions are silent, SMA was selected over electrical motors. This paper introduces a compact and fully controllable actuation unit with position feedback and a novel controlling scenario that uses the selected hybrid actuation of bidirectional multi segment SMA wires in series to pull the wires. When designing the actuators, a biomechanical analysis was conducted to find anatomical parameters of natural smiles, and the robot mask was evaluated for its suitability as a facial expression supporter.

Dushyantha Jayatilake; Kenji Suzuki

2011-01-01T23:59:59.000Z

205

Using Doppler spectra to separate hydrometeor populations and analyze ice precipitation in multilayered mixed-phase clouds  

SciTech Connect

Multimodality of cloud radar Doppler spectra is used to partition cloud particle phases and to separate distinct ice populations in the radar sample volume, thereby facilitating analysis of individual ice showers in multilayered mixed-phase clouds. A 35-GHz cloud radar located at Barrow, Alaska, during the Mixed-Phase Arctic Cloud Experiment collected the Doppler spectra. Data from a pair of collocated depolarization lidars confirmed the presence of two liquid cloud layers reported in this study. Surprisingly, both of these cloud layers were embedded in ice precipitation yet maintained their liquid. Our spectral separation of the ice precipitation yielded two distinct ice populations: ice initiated within the two liquid cloud layers and ice precipitation formed in higher cloud layers. Comparisons of ice fall velocity versus radar reflectivity relationships derived for distinct showers reveal that a single relationship might not properly represent the ice showers during this period.

Rambukkange, Mahlon P.; Verlinde, J.; Eloranta, E. W.; Flynn, Connor J.; Clothiaux, Eugene E.

2011-01-31T23:59:59.000Z

206

A geodesic voting shape prior to constrain the level set evolution for the segmentation of tubular  

E-Print Network (OSTI)

A geodesic voting shape prior to constrain the level set evolution for the segmentation of tubular a geodesic voting method to segment tree struc- tures, such as retinal or cardiac blood vessels. Many authors have used minimal cost paths, or similarly geodesics relative to a weight potential P, to find a vessel

Cohen, Laurent

207

A fusion approach for automatic speech segmentation of large corpora with application to speech synthesis  

Science Journals Connector (OSTI)

This paper deals with the automatic segmentation of large speech corpora in the case when the phonetic sequence corresponding to the speech signal is known. A direct and typical application is corpus-based Text-To-Speech (TTS) synthesis. We start by ... Keywords: Automatic speech segmentation, Boundary model, Brandt's GLR algorithm, HMM, Hard supervision, Soft supervision, Speech synthesis

Safaa Jarifi; Dominique Pastor; Olivier Rosec

2008-01-01T23:59:59.000Z

208

Hierarchical Segmentation of Surfaces Embedded in for Auto-Body Painting  

E-Print Network (OSTI)

. INTRODUCTION AND PRIOR WORK Robots are widely used for spray-painting in the automotive industry. OwingHierarchical Segmentation of Surfaces Embedded in R3 for Auto-Body Painting Prasad N. Atkar Aaron components. Index Terms-- segmentation, automation, coverage, trajectory planning, spray painting. I

Choset, Howie

209

An adaptive bacterial foraging algorithm for fuzzy entropy based image segmentation  

Science Journals Connector (OSTI)

In this paper an Adaptive Bacterial Foraging is proposed for fuzzy entropy optimization when it is applied to the segmentation of gray images. The proposed algorithm represents the improved version of classical bacterial foraging algorithm which is a ... Keywords: Bacterial foraging algorithm, Bi level thresholding, Chemotaxis, Fuzzy entropy, Image segmentation

Nandita Sanyal; Amitava Chatterjee; Sugata Munshi

2011-11-01T23:59:59.000Z

210

A STATISTICAL FRAMEWORK FOR FUSING MID-LEVEL PERCEPTUAL FEATURES IN NEWS STORY SEGMENTATION  

E-Print Network (OSTI)

from different features. The Kullbak- Leibler divergence measure is used in an optimization procedure these functionalities, there are many works addressing an important underlying technology, news story segmentation speech segments. The image clustering method is applied on the entire key frames and may not achieve

Chang, Shih-Fu

211

Multi-atlas Segmentation in Head and Neck CT Scans Amelia M. Arbisser  

E-Print Network (OSTI)

Multi-atlas Segmentation in Head and Neck CT Scans by Amelia M. Arbisser B.S., Computer Science of Engineering Thesis Committee #12;2 #12;Multi-atlas Segmentation in Head and Neck CT Scans by Amelia M, we employ an atlas of labeled training images. We register each of these images to the unlabeled

Golland, Polina

212

Topic Segmentation with Shared Topic Detection and Alignment of Multiple Documents  

E-Print Network (OSTI)

documents, term weight 1. INTRODUCTION Many researchers have worked on topic detection and track- ing (TDTTopic Segmentation with Shared Topic Detection and Alignment of Multiple Documents Bingjun Sun,giles,jyen}@ist.psu.edu, zha@cc.gatech.edu ABSTRACT Topic detection and tracking [26] and topic segmentation [15] play

Mitra, Prasenjit

213

Segmented Waves from a Spatiotemporal Transverse Wave Instability Lingfa Yang, Igal Berenstein, and Irving R. Epstein*  

E-Print Network (OSTI)

Segmented Waves from a Spatiotemporal Transverse Wave Instability Lingfa Yang, Igal Berenstein observe traveling waves emitted from Turing spots in the chlorine dioxide-iodine-malonic acid reaction. The newborn waves are continuous, but they break into segments as they propagate, and the propagation

Epstein, Irving R.

214

Narrow band region-based active contours and surfaces for 2D and 3D segmentation  

Science Journals Connector (OSTI)

We describe a narrow band region approach for deformable curves and surfaces in the perspective of 2D and 3D image segmentation. Basically, we develop a region energy involving a fixed-width band around the curve or surface. Classical region-based methods, ... Keywords: Active contour, Active surface, Deformable model, Level sets, Narrow band region energy, Segmentation

Julien Mille

2009-09-01T23:59:59.000Z

215

TEXTURE-BASED SEGMENTATION OF SATELLITE WEATHER IMAGERY V. Lakshmanan1,2  

E-Print Network (OSTI)

TEXTURE-BASED SEGMENTATION OF SATELLITE WEATHER IMAGERY V. Lakshmanan1,2 , V. DeBrunner2 , R. Rabin Unsupervised segmentation of weather images into features that correspond to physical storms is a fundamental and difficult problem. Treating an infrared satellite image as a Markov random field, the Kolmogorov

Lakshmanan, Valliappa

216

An Integrated Method of Adaptive Enhancement for Unsupervised Segmentation of MRI Brain Images  

E-Print Network (OSTI)

An Integrated Method of Adaptive Enhancement for Unsupervised Segmentation of MRI Brain Images of the adaptive enhancement for an unsupervised global-to-local segmentation of brain tissues in three-dimensional (3-D) MRI (Magnetic Resonance Imaging) images. Three brain tissues are of interest: CSF (Cerebro

Pizurica, Aleksandra

217

Disentangling between low order telescope aberrations and segmentation errors using a Shack-Hartmann sensor  

E-Print Network (OSTI)

in the Southern Hemisphere Karl-Schwarzschild-Str. 2, Garching, Germany A BST R A C T The shape correction of the mirrors is a crucial operation to obtain diffraction limited images in actively controlled telescopes. If the mirror is not monolithic, the segmentation errors introduced by piston, tip and tilt of the segments

Liske, Jochen

218

Quantitative Analysis of Peristaltic and Segmental Motion In Vivo in the Rat Small Intestine Using Dynamic  

E-Print Network (OSTI)

Quantitative Analysis of Peristaltic and Segmental Motion In Vivo in the Rat Small Intestine Using the utility of MRI to quan- titatively analyze these motions in the jejunum region of anes- thetized rats (N 6- and microscale mixing of the food chyme. Both peristaltic and segmental motions are essential for the absorption

Brasseur, James G.

219

A Multi-HMM Approach to ECG Segmentation Julien Thomas, Cedric Rose and Francois Charpillet  

E-Print Network (OSTI)

A Multi-HMM Approach to ECG Segmentation Julien Thomas, C´edric Rose and Franc¸ois Charpillet INRIA studies require to analyze thousands of ECGs in order to evaluate the side effects of a new drug. In this paper we present a new approach to automatic ECG segmentation based on hierarchic continuous density hid

Boyer, Edmond

220

Improving the transition modelling in hidden Markov models for ECG segmentation  

E-Print Network (OSTI)

Improving the transition modelling in hidden Markov models for ECG segmentation Benoît Frénay, Gaël/ELEC/DICE - Place du Levant, 3 1348 Louvain-la-Neuve, Belgium Abstract. The segmentation of ECG signal is a useful-dependent. Experiments show that both methods improve the results on pathological ECG signals. 1 Introduction Physicians

Verleysen, Michel

Note: This page contains sample records for the topic "distinct population segment" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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221

A Support System for ECG Segmentation Based on Hidden Markov Models  

E-Print Network (OSTI)

A Support System for ECG Segmentation Based on Hidden Markov Models Julien Thomas, C´edric Rose, Franc¸ois Charpillet Abstract-- Pharmaceutic studies require to analyze thousands of ECGs in order of probabilistic models for automatic ECG segmentation. We used a bayesian HMM clustering algorithm to partition

Paris-Sud XI, Université de

222

Functional segmentation of dynamic nuclear images by cross-?B-energy operator  

Science Journals Connector (OSTI)

We describe a new segmentation method of dynamic nuclear medicine images based on the cross-@J"B-energy operator. @J"B is a nonlinear measure which quantifies the interaction between two time-signals including their first and second derivatives. Similarity ... Keywords: Cross-?B-energy operator, Functional segmentation, Nuclear cardiac images, Time activity curve

Abdel-Ouahab Boudraa; Jean-Christophe Cexus; Habib Zaidi

2006-12-01T23:59:59.000Z

223

Design and development of a 329-segment tip-tilt piston mirror array for space-based adaptive optics  

E-Print Network (OSTI)

Design and development of a 329-segment tip-tilt piston mirror array for space-based adaptive. It consists of 329-hexagonal segments on a 600 m pitch, each with tip/tilt and piston degrees of freedom

224

Mechanical Efficiency and Noise Reduction of Segmented Stator Vanes  

Science Journals Connector (OSTI)

Model experiments indicating the possibility of several decibels of noise reduction with small change of mechanical efficiency in axial flow compressors using segmented stator vanes have been reported [J. Acoust. Soc. Amer. 47 111 (A) (1970)]. Compared with straight?edged vanes the serrated vanes provide 25 dB of noise reduction and no change in efficiency at the design conditions. Changing relative numbers of rotor blades and stator vanes gives either improved efficiency and no noise reduction or reduced efficiency and greater noise reduction. Off?design flow angles present a complicated pattern of results but in general the serrated vanes compared with straight?edged vanes are equally efficient and have increased broad?band noise but less blade?passage?frequency noise. As a noise reduction mechanism for turbine engines it may be used with most other techniques and the effects are likely to be additive; however its maximum benefit is likely to be about 5 dB.

T. F. W. Embleton; G. J. Thiessen

1971-01-01T23:59:59.000Z

225

Beam test of a segmented foil sem grid  

SciTech Connect

A prototype Secondary-electron Emission Monitor (SEM) was installed in the 8 GeV proton transport line for the MiniBooNE experiment at Fermilab. The SEM is a segmented grid made with 5 {micro}m Ti foils, intended for use in the 120 GeV NuMI beam at Fermilab. Similar to previous workers, we found that the full collection of the secondary electron signal requires a bias voltage to draw the ejected electrons cleanly off the foils, and this effect is more pronounced at larger beam intensity. The beam centroid and width resolutions of the SEM were measured at beam widths of 3, 7, and 8 mm, and compared to calculations. Extrapolating the data from this beam test, we expect a centroid and width resolutions of {delta}x{sub beam} = 20 {micro}m and {delta}{sigma}{sub beam} = 25 {micro}m, respectively, in the NuMI beam which has 1 mm spot size.

Kopp, S.; Indurthy, D.; Pavlovich, Z.; Proga, M.; Zwaska, R.; Childress, S.; Ford, R.; Kendziora, C.; Kobilarcik, T.; Moore, Craig D.; Tassotto, G.; ,

2005-07-01T23:59:59.000Z

226

A label field fusion model with a variation of information estimator for image segmentation  

Science Journals Connector (OSTI)

Abstract This paper proposes a new and reliable segmentation approach based on a fusion framework for combining multiple region-based segmentation maps (with any number of regions) to provide a final improved (i.e., accurate and consistent) segmentation result. The core of this new combination model is based on a consensus (cost) function derived from the recent information Theory based variation of information criterion, proposed by Meila, and allowing to quantify the amount of information that is lost or gained in changing from one clustering to another. In this case, the resulting consensus energy-based segmentation fusion model can be efficiently optimized by exploiting an iterative steepest local energy descent strategy combined with a connectivity constraint. This new framework of segmentation combination, relying on the fusion of inaccurate, quickly and roughly calculated, spatial clustering results, emerges as an appealing alternative to the use of complex segmentation models existing nowadays. Experiments on the Berkeley Segmentation Dataset show that the proposed fusion framework compares favorably to previous techniques in terms of reliability scores.

Max Mignotte

2014-01-01T23:59:59.000Z

227

Heavy Metal Stress. Activation of Distinct Mitogen-Activated Protein Kinase Pathways  

E-Print Network (OSTI)

, 2003; Polle and Schu¨tzendu¨bel, 2003). Heavy metal toxicity comprises inactivation of biomole- culesHeavy Metal Stress. Activation of Distinct Mitogen-Activated Protein Kinase Pathways by Copper, Vienna Biocenter, A­1030 Vienna, Austria Excessive amounts of heavy metals adversely affect plant growth

Hirt, Heribert

228

Distinct Pattern of p53 Mutations in Bladder Cancer: Relationship to Tobacco Usage  

Science Journals Connector (OSTI)

...of p53 Mutations in Bladder Cancer: Relationship to Tobacco Usage 1 1 Supported by USPHS Grants R01 CA40468 and R35 CA49758 from...of p53 mutations in bladder cancer: relationship to tobacco usage. | A distinct mutational spectrum for the p53 tumor suppressor...

Charles H. Spruck III; William M. Rideout III; Aria F. Olumi; Petra F. Ohneseit; Allen S. Yang; Yvonne C. Tsai; Peter W. Nichols; Thomas Horn; Gregers G. Hermann; Kenneth Steven; Ronald K. Ross; Mimi C. Yu; Peter A. Jones

1993-03-01T23:59:59.000Z

229

Behavioral/Systems/Cognitive Distinct Electrical and Chemical Connectivity Maps in the  

E-Print Network (OSTI)

Behavioral/Systems/Cognitive Distinct Electrical and Chemical Connectivity Maps in the Thalamic the network during normal sleep and in absence epilepsy, but the chemical versus electrical nature (horizontal) plane, chemical connectivity had higher incidence (60% of recorded neurons vs 40% in vertical

Huguenard, John R.

230

A Focused Small-Molecule Screen Identifies 14 Compounds with Distinct Effects on Toxoplasma gondii  

Science Journals Connector (OSTI)

...Compounds with Distinct Effects on Toxoplasma gondii Edwin T. Kamau Ananth R. Srinivasan Mark J. Brown Matthew G. Fair Erin J. Caraher Jon P. Boyle Address correspondence to Jon P. Boyle, boylej@pitt.edu . University of Pittsburgh, Department of Biological...

Edwin T. Kamau; Ananth R. Srinivasan; Mark J. Brown; Matthew G. Fair; Erin J. Caraher; Jon P. Boyle

2012-08-20T23:59:59.000Z

231

Distinctive upper mantle anisotropy beneath the High Lava Plains and Eastern Snake River Plain,  

E-Print Network (OSTI)

Distinctive upper mantle anisotropy beneath the High Lava Plains and Eastern Snake River Plain and continuing with the still- ongoing volcanism in the High Lava Plains (HLP) and eastern Snake River Plain (SRP waves; shear wave splitting; high lava plains; Snake River Plain; Yellowstone. Index Terms: 8137

232

Specific T-type calcium channel isoforms are associated with distinct burst phenotypes  

E-Print Network (OSTI)

timing loop important for cerebellar functions (14). In Purkinje cells T-type calcium channels contributeSpecific T-type calcium channel isoforms are associated with distinct burst phenotypes in deep-type calcium channels are thought to transform neuronal output to a burst mode by generating low voltage

Turner, Ray

233

'What is said' and the semantics/pragmatics distinction Franois Recanati  

E-Print Network (OSTI)

1 'What is said' and the semantics/pragmatics distinction François Recanati Institut Jean Nicod this corresponds to what the speaker actually means (as when I say, 'If I have three children I can benefit from lower rates on public transportation') but in other contexts what the speaker means is quite different

Paris-Sud XI, Université de

234

Three distinct kinetic groupings of the synaptotagmin family: Candidate sensors for rapid and  

E-Print Network (OSTI)

Three distinct kinetic groupings of the synaptotagmin family: Candidate sensors for rapid, syt I, appears to function as a Ca2 sensor that triggers the rapid exocytosis of synaptic vesicles much slower disassembly kinetics than does syt I, might function as Ca2 sensors for asynchronous

Chapman, Edwin R.

235

Thermodynamics of urban population flows  

Science Journals Connector (OSTI)

Orderliness, reflected via mathematical laws, is encountered in different frameworks involving social groups. Here we show that a thermodynamics can be constructed that macroscopically describes urban population flows. Microscopic dynamic equations and simulations with random walkers underlie the macroscopic approach. Our results might be regarded, via suitable analogies, as a step towards building an explicit social thermodynamics.

A. Hernando and A. Plastino

2012-12-05T23:59:59.000Z

236

Shrinking Global Population: A futuristic scenario  

E-Print Network (OSTI)

global population it will not be a game-changer. #12;Measures for changes in total births 1. TotalShrinking Global Population: A futuristic scenario or a current challenge. Hillel Bar of RSAI - Atlanta November 15, 2013 #12;The evolution of global population Year Global Population

Nagurney, Anna

237

Population Ecology ISSN 1438-3896  

E-Print Network (OSTI)

1 23 Population Ecology ISSN 1438-3896 Popul Ecol DOI 10.1007/s10144-012-0352-3 Impacts of enemy of Population Ecology and Springer Japan. This e-offprint is for personal use only and shall not be self of Population Ecology and Springer Japan 2012 Abstract In this study, we used data from both experi- ments

de Aguiar, Marcus A. M.

238

Gene Designer: a synthetic biology tool for constructing artificial DNA segments  

Science Journals Connector (OSTI)

Gene Designer is a stand-alone software for fast and easy design of synthetic DNA segments. Users can easily add, edit ... drag-and-drop graphic interface and a hierarchical DNA/Protein object map. Using advanced...

Alan Villalobos; Jon E Ness; Claes Gustafsson; Jeremy Minshull

2006-06-01T23:59:59.000Z

239

Generalized Fast Marching Method: Applications to Image Segmentation. Nicolas Forcadel, 3,4  

E-Print Network (OSTI)

,4 Carole Le Guyader, 5,6,7 Christian Gout Running title: GFMM: Applications to Image Segmentation@cemrics.enpc.fr, chris gout@cal.berkeley.edu, carole.le-guyader@insa-rennes.fr Abstract. In this paper, we propose

Forcadel, Nicolas

240

Multi-task Low-rank Affinity Pursuit for Image Segmentation , Guangcan Liu1  

E-Print Network (OSTI)

affinity matrix. The inference process is formulated as a constrained nuclear norm and 2,1-norm on the MSRC dataset and Berkeley segmentation dataset well val- idate the superiority of using multiple

Ma, Yi

Note: This page contains sample records for the topic "distinct population segment" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Ensemble Classification System Applied for Retinal Vessel Segmentation on Child Images Containing Various Vessel Profiles  

Science Journals Connector (OSTI)

This paper describes a new supervised method for segmentation of blood vessels in retinal images of multi ethnic school children. This method uses an ensemble classification system of boot strapped decision tr...

M. M. Fraz; P. Remagnino; A. Hoppe; B. Uyyanonvara

2012-01-01T23:59:59.000Z

242

E-Print Network 3.0 - acute st-segment elevation Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Impact of age on treatment and outcomes in ST-elevation myocardial infarction Summary: , Armstrong PW, et al. Acute coronary care in the elderly, part II: ST-segment-elevation...

243

Maximum-likelihood parameter estimation for unsupervised stochastic model-based image segmentation  

Science Journals Connector (OSTI)

An unsupervised stochastic model-based approach to image segmentation is described, and some of its properties investigated. In this approach, the problem of model parameter estimation is formulated as a problem of parameter estimation from incomplete ...

Jun Zhang; J. W. Modestino; D. A. Langan

1994-07-01T23:59:59.000Z

244

Semantic segmentation of street scenes by superpixel co-occurrence and 3D geometry  

E-Print Network (OSTI)

in daylight and dusk. 1. Introduction Combining object segmentation and recognition is one of the fundamental- order Markov Random Field (MRF), where the final label- ing is obtained as a MAP solution of the labels

Kosecka, Jana

245

Overview of the Electrical Energy Segment of the Energy Information Administration/ Manufacturing Consumption Report  

E-Print Network (OSTI)

, liquefied petroleum gas, coke and breeze, coal, and electricity, only the electricity segment is overviewed. Along with pure electrical energy consumption information, newly available data covers methods that manufacturers used to purchase and modify...

Lockhead, S.

246

Active shape model with inter-profile modeling paradigm for cardiac right ventricle segmentation  

Science Journals Connector (OSTI)

In this work, a novel active shape model (ASM) paradigm is proposed to segment the right ventricle (RV) in cardiac magnetic resonance image sequences. The proposed paradigm includes modifications to two fundamental steps in the ASM algorithm. The first ...

Mohammed S. ElBaz; Ahmed S. Fahmy

2012-10-01T23:59:59.000Z

247

Segmentation of Spin-Echo MRI brain images: a comparison study of Crisp and Fuzzy algorithms  

E-Print Network (OSTI)

This thesis presents a scheme for segmenting Spin-Echo MRI brain images based on Fuzzy C-Mean (FCM) clustering techniques. This scheme consists of feature extraction, feature conditioning or evaluation, and thresholded FCM clustering. Feature...

Chung, Maranatha

2012-06-07T23:59:59.000Z

248

E-Print Network 3.0 - amplified mtdna segments Sample Search...  

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results for: amplified mtdna segments Page: << < 1 2 3 4 5 > >> 1 42(3):304-309,2001 FORENSIC SCIENCES Summary: mitochondrial DNA (mtDNA) testing is the low power of...

249

Molecular signature and in vivo behavior of bone marrow endosteal and subendosteal stromal cell populations and their relevance to hematopoiesis  

SciTech Connect

In the bone marrow cavity, hematopoietic stem cells (HSC) have been shown to reside in the endosteal and subendosteal perivascular niches, which play specific roles on HSC maintenance. Although cells with long-term ability to reconstitute full hematopoietic system can be isolated from both niches, several data support a heterogenous distribution regarding the cycling behavior of HSC. Whether this distinct behavior depends upon the role played by the stromal populations which distinctly create these two niches is a question that remains open. In the present report, we used our previously described in vivo assay to demonstrate that endosteal and subendosteal stromal populations are very distinct regarding skeletal lineage differentiation potential. This was further supported by a microarray-based analysis, which also demonstrated that these two stromal populations play distinct, albeit complementary, roles in HSC niche. Both stromal populations were preferentially isolated from the trabecular region and behave distinctly in vitro, as previously reported. Even though these two niches are organized in a very close range, in vivo assays and molecular analyses allowed us to identify endosteal stroma (F-OST) cells as fully committed osteoblasts and subendosteal stroma (F-RET) cells as uncommitted mesenchymal cells mainly represented by perivascular reticular cells expressing high levels of chemokine ligand, CXCL12. Interestingly, a number of cytokines and growth factors including interleukin-6 (IL-6), IL-7, IL-15, Hepatocyte growth factor (HGF) and stem cell factor (SCF) matrix metalloproteases (MMPs) were also found to be differentially expressed by F-OST and F-RET cells. Further microarray analyses indicated important mechanisms used by the two stromal compartments in order to create and coordinate the 'quiescent' and 'proliferative' niches in which hematopoietic stem cells and progenitors reside.

Balduino, Alex, E-mail: balduino@uva.edu.br [School of Dentistry, Veiga de Almeida University, Rio de Janeiro, RJ (Brazil)] [School of Dentistry, Veiga de Almeida University, Rio de Janeiro, RJ (Brazil); Mello-Coelho, Valeria [Biomedical Science Institute, Federal University of Rio de Janeiro, Rio de Janeiro, RJ (Brazil) [Biomedical Science Institute, Federal University of Rio de Janeiro, Rio de Janeiro, RJ (Brazil); National Institute on Aging, National Institute of Health, Baltimore, MD (United States); Wang, Zhou; Taichman, Russell S.; Krebsbach, Paul H. [Department of Periodontics, Prevention and Geriatrics, University of Michigan School of Dentistry, Ann Arbor, MI (United States)] [Department of Periodontics, Prevention and Geriatrics, University of Michigan School of Dentistry, Ann Arbor, MI (United States); Weeraratna, Ashani T.; Becker, Kevin G. [National Institute on Aging, National Institute of Health, Baltimore, MD (United States)] [National Institute on Aging, National Institute of Health, Baltimore, MD (United States); Mello, Wallace de [Instituto Oswaldo Cruz, Rio de Janeiro, RJ (Brazil)] [Instituto Oswaldo Cruz, Rio de Janeiro, RJ (Brazil); Taub, Dennis D. [National Institute on Aging, National Institute of Health, Baltimore, MD (United States)] [National Institute on Aging, National Institute of Health, Baltimore, MD (United States); Borojevic, Radovan [Biomedical Science Institute, Federal University of Rio de Janeiro, Rio de Janeiro, RJ (Brazil)] [Biomedical Science Institute, Federal University of Rio de Janeiro, Rio de Janeiro, RJ (Brazil)

2012-11-15T23:59:59.000Z

250

Effect of sorghum type on the digestibility of segmented and whole plant sorghum silages  

E-Print Network (OSTI)

EFFECT OF SORGHUM TYPE ON THE DIGESTIBILITY OF SEGMENTED AND NHOLE PLANT SORGHUM SILAGES A Thesis RODRIGO E. SPIEGEL Submitted to the Grs duate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE May 1975 Major Suhject: Animal Nutri tion EFFECT OF SORGHUM TYPE ON THE DIGESTIBILITY OF SEGMENTED AND WHOLE PLANT SORGHUM SILAGES A Thesis by RODRIGO E. SPIEGEL Approved as to style and content by: ' Chairman o . Cdmmittee Member Head...

Spiegel Richa, Rodrigo Enrique

2012-06-07T23:59:59.000Z

251

Gap-Size Distribution Functions of a Random Sequential Adsorption Model of Segments on the Line  

E-Print Network (OSTI)

We performed extensive simulations accompanied by a detailed study of a two-segment size random sequential model on the line. We followed the kinetics towards the jamming state, but we paid particular attention to the characterization of the jamming state structure. In particular, we studied the effect of the size ratio on the mean-gap size, the gap-size dispersion, gap-size skewness, and gap-size kurtosis at the jamming state. We also analyzed the above quantities for the four possible segment-to-segment gap types. We ranged the values of the size ratio from one to twenty. In the limit of a size ratio of one, one recovers the classical car-parking problem. We observed that at low size ratios the jamming state is constituted by short streaks of small and large segments, while at high values of the size ratio the jamming state structure is formed by long streaks of small segments separated by a single large segment. This view of the jamming state structure as a function of the size ratio is supported by the various measured quantities. The present work can help provide insight, for example, on how to minimize the interparticle distance or minimize fluctuations around the mean particle-to-particle distance.

N. A. M. Araujo; A. Cadilhe

2004-04-18T23:59:59.000Z

252

Combining prior day contours to improve automated prostate segmentation  

SciTech Connect

Purpose: To improve the accuracy of automatically segmented prostate, rectum, and bladder contours required for online adaptive therapy. The contouring accuracy on the current image guidance [image guided radiation therapy (IGRT)] scan is improved by combining contours from earlier IGRT scans via the simultaneous truth and performance level estimation (STAPLE) algorithm. Methods: Six IGRT prostate patients treated with daily kilo-voltage (kV) cone-beam CT (CBCT) had their original plan CT and nine CBCTs contoured by the same physician. Three types of automated contours were produced for analysis. (1) Plan: By deformably registering the plan CT to each CBCT and then using the resulting deformation field to morph the plan contours to match the CBCT anatomy. (2) Previous: The contour set drawn by the physician on the previous day CBCT is similarly deformed to match the current CBCT anatomy. (3) STAPLE: The contours drawn by the physician, on each prior CBCT and the plan CT, are deformed to match the CBCT anatomy to produce multiple contour sets. These sets are combined using the STAPLE algorithm into one optimal set. Results: Compared to plan and previous, STAPLE improved the average Dice's coefficient (DC) with the original physician drawn CBCT contours to a DC as follows: Bladder: 0.81 {+-} 0.13, 0.91 {+-} 0.06, and 0.92 {+-} 0.06; Prostate: 0.75 {+-} 0.08, 0.82 {+-} 0.05, and 0.84 {+-} 0.05; and Rectum: 0.79 {+-} 0.06, 0.81 {+-} 0.06, and 0.85 {+-} 0.04, respectively. The STAPLE results are within intraobserver consistency, determined by the physician blindly recontouring a subset of CBCTs. Comparing plans recalculated using the physician and STAPLE contours showed an average disagreement less than 1% for prostate D98 and mean dose, and 5% and 3% for bladder and rectum mean dose, respectively. One scan takes an average of 19 s to contour. Using five scans plus STAPLE takes less than 110 s on a 288 core graphics processor unit. Conclusions: Combining the plan and all prior days via the STAPLE algorithm to produce treatment day contours is superior to the current standard of deforming only the plan contours to the daily CBCT. STAPLE also improves the precision, with a substantial decrease in standard deviation, a key for adaptive therapy. Geometrically and dosimetrically accurate contours can be automatically generated with STAPLE on prostate region kV CBCT in a time scale suitable for online adaptive therapy.

Godley, Andrew; Sheplan Olsen, Lawrence J.; Stephans, Kevin [Department of Radiation Oncology, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, Ohio 44195 (United States); Zhao Anzi [Department of Radiation Oncology, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, Ohio 44195 and Department of Physics, Cleveland State University, 2121 Euclid Avenue, Cleveland, Ohio 44115 (United States)

2013-02-15T23:59:59.000Z

253

Intrathymic programming of effector fates in three molecularly distinct ?? T cell subtypes  

E-Print Network (OSTI)

Innate ?? T cells function in the early phase of immune responses. Although innate ?? T cells have often been studied as one homogenous population, they can be functionally classified into effector subsets on the basis of ...

Narayan, Kavitha

254

Multi-objective Distinct Candidates Optimization: Locating a few highly different solutions in a circuit component sizing problem  

Science Journals Connector (OSTI)

Abstract: Traditional multi-objective optimization algorithms typically return several hundred non-dominated solutions. From a practical point of view, a small set of 5-10 distinct candidates is often preferred because post-processing many solutions ... Keywords: Distinct candidates, Diversity management, Many-objective optimization, Multi-criterion decision making, Multi-objective optimization

Rasmus K. Ursem; Peter Dueholm Justesen

2012-01-01T23:59:59.000Z

255

Segmentation of the Outer Contact on P-Type Coaxial Germanium Detectors  

SciTech Connect

Germanium detector arrays are needed for low-level counting facilities. The practical applications of such user facilities include characterization of low-level radioactive samples. In addition, the same detector arrays can also perform important fundamental physics measurements including the search for rare events like neutrino-less double-beta decay. Coaxial germanium detectors having segmented outer contacts will provide the next level of sensitivity improvement in low background measurements. The segmented outer detector contact allows performance of advanced pulse shape analysis measurements that provide additional background reduction. Currently, n-type (reverse electrode) germanium coaxial detectors are used whenever a segmented coaxial detector is needed because the outer boron (electron barrier) contact is thin and can be segmented. Coaxial detectors fabricated from p-type germanium cost less, have better resolution, and are larger than n-type coaxial detectors. However, it is difficult to reliably segment p-type coaxial detectors because thick (~1 mm) lithium-diffused (hole barrier) contacts are the standard outside contact for p-type coaxial detectors. During this Phase 1 Small Business Innovation Research (SBIR) we have researched the possibility of using amorphous germanium contacts as a thin outer contact of p-type coaxial detectors that can be segmented. We have developed amorphous germanium contacts that provide a very high hole barrier on small planar detectors. These easily segmented amorphous germanium contacts have been demonstrated to withstand several thousand volts/cm electric fields with no measurable leakage current (<1 pA) from charge injection over the hole barrier. We have also demonstrated that the contact can be sputter deposited around and over the curved outside surface of a small p-type coaxial detector. The amorphous contact has shown good rectification properties on the outside of a small p-type coaxial detector. These encouraging results are the first fundamental steps toward demonstrating the viability of the amorphous germanium contacts for much larger segmented p-type coaxial detectors. Large segmented p-type coaxial detectors based on this technology could serve as the gamma-ray spectrometers on instruments such as the Radionuclide Aerosol Sampler/Analyzer (RASA). These detectors will provide a more sensitive, lower background measurement than currently available unsegmented p-type coaxial detectors.

Hull, Ethan L.; Pehl, Richard H.; Lathrop, James R.; Martin, Gregory N.; Mashburn, R. B.; Miley, Harry S.; Aalseth, Craig E.; Hossbach, Todd W.

2006-09-21T23:59:59.000Z

256

An individual-based instream flow model for coexisting populations of brown and rainbow trout  

SciTech Connect

This report describes an individual-based model for sympatric populations of brown and rainbow trout in a stream habitat. Hatchery rainbow trout are included as a third species. The model provides a tool for predicting flow effects on trout populations by linking the hydraulic component of the Physical Habitat Simulation (PHABSIM) methodology and an individual-based population modeling approach. PHABSIM simulates the spatial distribution of depth and velocity at different flows. The individual-based model simulates the reproduction, foraging, consumption, energetic costs, growth, habitat utilization, movement, and mortality of individual fish, and enables population attributes to be determined from relevant attributes of individual fish. The spatially explicit nature of the model permits evaluation of behavioral responses used by fish to mitigate temporary setbacks in habitat quality. This linked mechanistic modeling approach readily lends itself to the iterative process of making predictions, testing against field data, improving the model, and making more predictions. The model has been applied to a stream segment in the Tule River, California. Physical and biological data from this site are used as input to the model. Calibrating the model to abundance data was relatively easy because values for mortality parameters were not strongly constrained by empirical data. Calibrating the model to observed growth rates and habitat use was more challenging. The primary reason for developing this model has been to provide a new and complementary tool to PHABSIM that can be used in instream-flow assessments.

Van Winkle, W.; Jager, H.I.; Holcomb, B.D.

1996-03-01T23:59:59.000Z

257

Segmenting consumers based on how they spend a tax rebate: An analysis of the Australian stimulus payment  

Science Journals Connector (OSTI)

Tax rebates are instruments for stimulating consumer spending during recessions. Previous research assessed whether consumers use tax rebates for saving or, alternatively, purchasing goods and services. These studies concentrated on aggregate estimations. Based on the saving motive hierarchy suggested in the economic psychology literature, other theories on saving motives, and acquisition pattern analysis, we propose that consumers can be segmented by the purposes for which they use a tax rebate. We apply Latent Class Analysis to segment consumers in Australia according to their allocation of the 2009 government rebate, which was paid as a tax bonus, across a broad set of expenditure categories. The analysis reveals segments with different spending patterns, including segments we have labeled as investors, travelers, debt-payers, and four other segments. Segment membership is explained using a mix of socio-demographic variables, annual category expenditures, and psychological factors (materialism and consumer confidence). We discuss theoretical implications as well as managerial implications for policymakers and marketing.

Harmen Oppewal; Leonard J. Paas; Geoffrey I. Crouch; Twan Huybers

2010-01-01T23:59:59.000Z

258

Brain tumour diagnostic segmentation based on optimal texture features and support vector machine classifier  

Science Journals Connector (OSTI)

This paper presents a new general automatic method for segmenting brain tumours in Magnetic Resonance (MR) images. Our approach addresses all types of brain tumours. The proposed method involves, therefore, image pre-processing, feature extraction via the wavelet transform-spatial gray level dependence matrix (WT-SGLDM), dimensionality reduction using the Genetic Algorithm (GA) and classification of the reduced features using a support vector machine (SVM). These optimal features are employed for the segmentation of brain tumour. The resulting method is aimed at early tumour diagnostics support by distinguishing between brain tissue, benign tumour tissue and malignant tumour tissue. The segmentation results in different types of brain tissues that are evaluated by comparison with manual segmentation, as well as with other existing techniques. The quantitative evaluation shows that our approach outperforms manual segmentation with match percent (MP) measures equal to 97.08% and 98.89% for malignant and the benign tumours, respectively. The qualitative evaluation displays that our attitude overtakes the FCM algorithm with an accuracy rate of 99.69% for benign tumours and 99.36% for malignant tumours.

Ahmed Kharrat; Mohamed BenMessaoud; Mohamed Abid

2014-01-01T23:59:59.000Z

259

INVESTIGATION Inferring Admixture Histories of Human Populations  

E-Print Network (OSTI)

and apply to test for admixture among all populations from the Human Genome Diversity Project (HGDPINVESTIGATION Inferring Admixture Histories of Human Populations Using Linkage Disequilibrium Po-range migrations and the resulting admixtures between populations have been important forces shaping human genetic

Reich, David

260

Edges in CNC polishing: from mirror-segments towards semiconductors, paper 1: edges on processing the global surface  

Science Journals Connector (OSTI)

Segment-edges for extremely large telescopes are critical for observations requiring high contrast and SNR, e.g. detecting exo-planets. In parallel, industrial requirements for...

Walker, David; Yu, Guoyu; Li, Hongyu; Messelink, Wilhelmus; Evans, Rob; Beaucamp, Anthony

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "distinct population segment" from the National Library of EnergyBeta (NLEBeta).
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261

Simulation Study of Enhanced Oil Recovery by ASP (Alkaline, Surfactant and Polymer) Flooding for Norne Field C-segment.  

E-Print Network (OSTI)

?? This research is a simulation study to improve total oil production using ASP flooding method based on simulation model of Norne field C-segment. The (more)

Abadli, Farid

2012-01-01T23:59:59.000Z

262

Application of Micro-segmentation Algorithms to the Healthcare Market:A Case Study  

SciTech Connect

We draw inspiration from the recent success of loyalty programs and targeted personalized market campaigns of retail companies such as Kroger, Netflix, etc. to understand beneficiary behaviors in the healthcare system. Our posit is that we can emulate the financial success the companies have achieved by better understanding and predicting customer behaviors and translating such success to healthcare operations. Towards that goal, we survey current practices in market micro-segmentation research and analyze health insurance claims data using those algorithms. We present results and insights from micro-segmentation of the beneficiaries using different techniques and discuss how the interpretation can assist with matching the cost-effective insurance payment models to the beneficiary micro-segments.

Sukumar, Sreenivas R [ORNL] [ORNL; Aline, Frank [ORNL] [ORNL

2013-01-01T23:59:59.000Z

263

A Segmented, Enriched N-type Germanium Detector for Neutrinoless Double Beta-Decay Experiments  

SciTech Connect

We present data characterizing the performance of the _rst segmented, N- type Ge detector, isotopically enriched to 85% 76Ge. This detector, based on the Ortec PT6x2 design and referred to as SEGA (Segmented, Enriched Germanium Assembly), was developed as a possible prototype for neutrinoless double beta-decay measurements by the Majorana collaboration. We present some of the general characteristics (including bias potential, efficiency, leakage current, and integral cross-talk) for this detector in its temporary cryostat. We also present an analysis of the resolution of the detector, and demonstrate that for all but two segments there is at least one channel that reaches the Majorana resolution goal below 4 keV FWHM at 2039 keV, and all channels are below 4.5 keV FWHM.

Leviner, L.; Aalseth, Craig E.; Ahmed, M. W.; Avignone, F. T.; Back, Henning O.; Barabash, Alexander S.; Boswell, M.; De Braeckeleer, L.; Brudanin, V.; Chan, Yuen-Dat; Egorov, Viatcheslav; Elliott, Steven R.; Gehman, Victor M.; Hossbach, Todd W.; Kephart, Jeremy; Kidd, M. F.; Konovalov, S.; Lesko, Kevin; Li, Jingyi; Mei, Dongming; Mikhailov, S.; Miley, Harry S.; Radford, D. C.; Reeves, James H.; Sandukovsky, Viatcheslav; Umatov, Valdimir; Underwood, T. A.; Tornow, W.; Wu, Y. K.; Young, A.

2014-01-21T23:59:59.000Z

264

The average number of distinct sites visited by a random walker on random graphs  

E-Print Network (OSTI)

We study the linear large $n$ behavior of the average number of distinct sites $S(n)$ visited by a random walker after $n$ steps on a large random graph. An expression for the graph topology dependent prefactor $B$ in $S(n) = Bn$ is proposed. We use generating function techniques to relate this prefactor to the graph adjacency matrix and then devise message-passing equations to calculate its value. Numerical simulations are performed to evaluate the agreement between the message passing predictions and random walk simulations on random graphs. Scaling with system size and average graph connectivity are also analysed.

De Bacco, Caterina; Sollich, Peter

2015-01-01T23:59:59.000Z

265

A general few-projection method for tomographic reconstruction of samples consisting of several distinct materials  

SciTech Connect

We present a method for tomographic reconstruction of objects containing several distinct materials, which is capable of accurately reconstructing a sample from vastly fewer angular projections than required by conventional algorithms. The algorithm is more general than many previous discrete tomography methods, as: (i) a priori knowledge of the exact number of materials is not required; (ii) the linear attenuation coefficient of each constituent material may assume a small range of a priori unknown values. We present reconstructions from an experimental x-ray computed tomography scan of cortical bone acquired at the SPring-8 synchrotron.

Myers, Glenn R. [Department of Applied Mathematics, Australian National University, Canberra ACT 0200 (Australia); Thomas, C. David L.; Clement, John G. [Melbourne Dental School, University of Melbourne, Melbourne 3010 (Australia); Paganin, David M. [School of Physics, Monash University, Clayton 3800 (Australia); CSIRO Materials Science and Engineering, PB 33, Clayton South, 3169 (Australia); Gureyev, Timur E. [CSIRO Materials Science and Engineering, PB 33, Clayton South, 3169 (Australia)

2010-01-11T23:59:59.000Z

266

Population Density Population density (persons per square kilometer) layers, for 1990  

E-Print Network (OSTI)

Population Density Africa Population density (persons per square kilometer) layers, for 1990 the 12 population density classes. Source information: http://sedac.ciesin.columbia.edu/gpw/. ´ Robinson://sedac.ciesin.columbia.edu/place/ Publish Date: 03/13/07 0 1,000 km Population Density 2000 0 Persons \\ Sq.Km 0-2 Persons \\ Sq.Km 2

Columbia University

267

Transport Energy Use and Population Density  

NLE Websites -- All DOE Office Websites (Extended Search)

Transport Energy Use and Population Density Transport Energy Use and Population Density Speaker(s): Masayoshi Tanishita Date: July 1, 2004 - 10:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Jonathan Sinton After Peter Newman and Jeffrey Kenworthy published "Cities and Automobile Dependence" in 1989, population density was brought to public attention as an important factor to explain transport mobility and energy use. However, several related issues still remain open: Is an increase in population density more effective than rising gas prices in reducing transport energy use? How much does per capita transport energy use change as population density in cities changes? And what kind of factors influence changes in population density? In this presentation, using city-level data in the US, Japan and other countries, the population-density elasticity of

268

A survey of shaped-based registration and segmentation techniques for cardiac images  

Science Journals Connector (OSTI)

Heart disease is the leading cause of death in the modern world. Cardiac imaging is routinely applied for assessment and diagnosis of cardiac diseases. Computerized image analysis methods are now widely applied to cardiac segmentation and registration ... Keywords: AAM, ASM, CT, CVD, Cardiac CT, Cardiac MR, Cardiac motion, Cardiac registration, Cardiac segmentation, EB, EDV, EF, EFFD, EM, ESV, Echocardiography, Endo, Epi, FE, FFD, Four CH, GMM, GRPM, LA, LADA, LAX, LCX, LV, MI, MIA, MRF, MRI, N, N/A, NMI, NURBS, P, PCA, PET, PM, RA, RPM, RV, Review article, SAD, SAX, SM, SPECT, SSD, TDI, TEE, TMI, US

Vahid Tavakoli; Amir A. Amini

2013-09-01T23:59:59.000Z

269

Brain tumour segmentation in MRI: knowledge-based system and region growing approach  

Science Journals Connector (OSTI)

We present in this paper a method for MRI brain tumour segmentation, so we propose a general framework that is a combination of paradigms, in order to have a hybrid segmentation method, automatic and unsupervised. In the first phase, expertise and characteristics derived from MRI images are combined to define heuristics for the development of the classification approach. In the second phase, refinement of the tumour contour is achieved by using the region growing method. The results are good and visually validated by radiologists.

Badredine Sayah; Bornia Tighiouart

2014-01-01T23:59:59.000Z

270

Numerical analysis of corroded pipeline segments revealed by In-Line Inspection tools  

Science Journals Connector (OSTI)

The paper presents computation technology for numerical analysis of multiaxial non-linear stress state of the corroded pipeline segments. Developed computation technology along with the modern In-Line Inspection (ILI) tools gives an opportunity for the transport company experts to predict the high accuracy values of burst and safe maximum pressures of the corroded pipeline segments. It allows a decrease in accidents, to provide maximal economical effectiveness of technical inspection and repair of pipeline networks. Moreover, wide application of computation technology allows to make recommendations to the technical inspection tool companies for improvement of technical specifications of their products.

Vladimir V. Aleshin; Viatcheslav V. Kobyakov; Vadim E. Seleznev

2006-01-01T23:59:59.000Z

271

TP53 Mutation Spectrum in Breast Cancer Is Subtype Specific and Has Distinct Prognostic Relevance  

Science Journals Connector (OSTI)

...expressing one or more Th1 (IFNgamma, TNFalpha, and/or IL2) cytokines. The pie charts demonstrate the frequency of individual cell populations, and numbers below the pie charts indicate the percentage of PAP-specific Th1+ events among total CD8...

Laxmi Silwal-Pandit; Hans Kristian Moen Vollan; Suet-Feung Chin; Oscar M. Rueda; Steven McKinney; Tomo Osako; David A. Quigley; Vessela N. Kristensen; Samuel Aparicio; Anne-Lise Brresen-Dale; Carlos Caldas; Anita Langerd

2014-07-01T23:59:59.000Z

272

Distinct physiological roles for the two L-asparaginase isozymes of Escherichia coli  

SciTech Connect

Highlights: Escherichia coli contains two L-asparaginase isozymes with distinct localization, kinetics and regulation. Mutant strains were used to examine the roles of these enzymes in L-asparagine utilization. We report that L-asparaginase II permits growth on asparagine and glycerol under anaerobic conditions. We propose that this enzyme is the first step in a co-regulated pathway leading to fumarate. The pathway is regulated by anaerobiosis and cAMP and provides a terminal elector acceptor. -- Abstract: Escherichia coli expresses two L-asparaginase (EC 3.5.1.1) isozymes: L-asparaginse I, which is a low affinity, cytoplasmic enzyme that is expressed constitutively, and L-asparaginase II, a high affinity periplasmic enzyme that is under complex co-transcriptional regulation by both Fnr and Crp. The distinct localisation and regulation of these enzymes suggest different roles. To define these roles, a set of isogenic mutants was constructed that lacked either or both enzymes. Evidence is provided that L-asparaginase II, in contrast to L-asparaginase I, can be used in the provision of an anaerobic electron acceptor when using a non-fermentable carbon source in the presence of excess nitrogen.

Srikhanta, Yogitha N. [Department of Microbiology and Immunology, The University of Melbourne, Victoria 3010 (Australia)] [Department of Microbiology and Immunology, The University of Melbourne, Victoria 3010 (Australia); Atack, John M.; Beacham, Ifor R. [Institute for Glycomics, Griffith University, Gold Coast, QLD 4222 (Australia)] [Institute for Glycomics, Griffith University, Gold Coast, QLD 4222 (Australia); Jennings, Michael P., E-mail: m.jennings@griffith.edu.au [Institute for Glycomics, Griffith University, Gold Coast, QLD 4222 (Australia)

2013-07-05T23:59:59.000Z

273

Reactor Vessel and Reactor Vessel Internals Segmentation at Zion Nuclear Power Station - 13230  

SciTech Connect

Zion Nuclear Power Station (ZNPS) is a dual-unit Pressurized Water Reactor (PWR) nuclear power plant located on the Lake Michigan shoreline, in the city of Zion, Illinois approximately 64 km (40 miles) north of Chicago, Illinois and 67 km (42 miles) south of Milwaukee, Wisconsin. Each PWR is of the Westinghouse design and had a generation capacity of 1040 MW. Exelon Corporation operated both reactors with the first unit starting production of power in 1973 and the second unit coming on line in 1974. The operation of both reactors ceased in 1996/1997. In 2010 the Nuclear Regulatory Commission approved the transfer of Exelon Corporation's license to ZionSolutions, the Long Term Stewardship subsidiary of EnergySolutions responsible for the decommissioning of ZNPS. In October 2010, ZionSolutions awarded Siempelkamp Nuclear Services, Inc. (SNS) the contract to plan, segment, remove, and package both reactor vessels and their respective internals. This presentation discusses the tools employed by SNS to remove and segment the Reactor Vessel Internals (RVI) and Reactor Vessels (RV) and conveys the recent progress. SNS's mechanical segmentation tooling includes the C-HORCE (Circumferential Hydraulically Operated Cutting Equipment), BMT (Bolt Milling Tool), FaST (Former Attachment Severing Tool) and the VRS (Volume Reduction Station). Thermal segmentation of the reactor vessels will be accomplished using an Oxygen- Propane cutting system. The tools for internals segmentation were designed by SNS using their experience from other successful reactor and large component decommissioning and demolition (D and D) projects in the US. All of the designs allow for the mechanical segmentation of the internals remotely in the water-filled reactor cavities. The C-HORCE is designed to saw seven circumferential cuts through the Core Barrel and Thermal Shield walls with individual thicknesses up to 100 mm (4 inches). The BMT is designed to remove the bolts that fasten the Baffle Plates to the Baffle Former Plates. The FaST is designed to remove the Baffle Former Plates from the Core Barrel. The VRS further volume reduces segmented components using multiple configurations of the 38i and horizontal reciprocating saws. After the successful removal and volume reduction of the Internals, the RV will be segmented using a 'First in the US' thermal cutting process through a co-operative effort with Siempelkamp NIS Ingenieurgesellschaft mbH using their experience at the Stade NPP and Karlsruhe in Germany. SNS mobilized in the fall of 2011 to commence execution of the project in order to complete the RVI segmentation, removal and packaging activities for the first unit (Unit 2) by end of the 2012/beginning 2013 and then mobilize to the second unit, Unit 1. Parallel to the completion of the segmentation of the reactor vessel internals at Unit 1, SNS will segment the Unit 2 pressure vessel and at completion move to Unit 1. (authors)

Cooke, Conrad; Spann, Holger [Siempelkamp Nuclear Services: 5229 Sunset Blvd., (Suite M), West Columbia, SC, 29169 (United States)] [Siempelkamp Nuclear Services: 5229 Sunset Blvd., (Suite M), West Columbia, SC, 29169 (United States)

2013-07-01T23:59:59.000Z

274

NOAA'sSTATEOFTHECOAST National Coastal Population Report  

E-Print Network (OSTI)

Shoreline Counties Population Population Density Age Race Hispanic Origin Education Attainment Household Population Density Age Race Hispanic Origin Education Attainment Household Income Seasonal Housing Building

275

Distinct Modes of Internal Variability in the Global Meridional Overturning Circulation Associated with the Southern Hemisphere Westerly Winds  

Science Journals Connector (OSTI)

The internal variability of the global meridional overturning circulation (GMOC) in long-term integration of the earth system model Community Earth System Models (COSMOS) is examined in this study. Two distinct modes of the GMOC, which are closely ...

Wei Wei; Gerrit Lohmann; Mihai Dima

2012-05-01T23:59:59.000Z

276

Image Segmentation using a Generalized Fast Marching Nicolas Forcadel (ENPC-CERMICS, Paris), Carole Le Guyader (INSA  

E-Print Network (OSTI)

), Carole Le Guyader (INSA Rennes), Christian Gout (INRIA, France) Multivariate Approximation: Theory and Applications April 26 - May 01, 2007 N. Forcadel C. Le Guyader, C. Gout Image Segmentation #12;Plan 1 Fast. Le Guyader, C. Gout Image Segmentation #12;Plan 1 Fast Marching Method 2 Generalized Fast Marching

Forcadel, Nicolas

277

RANSAC Matching: Simultaneous Registration and Segmentation Shao-Wen Yang, Chieh-Chih Wang and Chun-Hua Chang  

E-Print Network (OSTI)

segmentation errors. By explicitly taking into account the various noise sources degrading the effective- ness. The improved segmentation can also be used as the basis for higher level scene understanding. The effectiveness, 10617 Taiwan any@pal.csie.ntu.edu.tw Chieh-Chih Wang is with Faculty of the Department of Computer

Wang, Chieh-Chih "Bob"

278

Multi-Class Video Co-Segmentation with a Generative Multi-Video Model Wei-Chen Chiu Mario Fritz  

E-Print Network (OSTI)

Multi-Class Video Co-Segmentation with a Generative Multi-Video Model Wei-Chen Chiu Mario Fritz Max Planck Institute for Informatics, Saarbr¨ucken, Germany {walon,mfritz}@mpi-inf.mpg.de Abstract Video data in videos and recent advances in video segmentation has shown great progress in exploiting these addition

279

3D segmentation of mouse organs from MR images using deformable simplex mesh models G. Hamarneh1  

E-Print Network (OSTI)

3D segmentation of mouse organs from MR images using deformable simplex mesh models G. Hamarneh1 , H. Delingette2 , M. Henkelman1 1 Hospital for Sick Children, Toronto, ON, Canada, 2 INRIA brains and kidneys from MR images. Algorithmic details and 3D segmentation results are presented

Hamarneh, Ghassan

280

White Matter Segmentation of Brain MRI during Infancy Michle Pport, Dana E. Ilea Ghita, Eilish Twomey, and Paul F. Whelan  

E-Print Network (OSTI)

White Matter Segmentation of Brain MRI during Infancy Michèle Péporté¹, Dana E. Ilea Ghita¹, Eilish is a neurodevelopment impairment which can be detected by analysing the inconsistencies in the white matter. Aim: This study describes a novel automatic white matter segmentation approach for premature infant data

Whelan, Paul F.

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281

IEEE TRANSACTIONS ON INFORMATION TECHNOLOGY IN BIOMEDICINE, VOL. 11, NO. 4, JULY 2007 443 Segmentation and Classification of Dot  

E-Print Network (OSTI)

Yeshaya Abstract--Signal segmentation and classification of fluorescence in situ hybridization (FISH classifier (NBC) or a multilayer perceptron is accomplished. When applied to a FISH image database, dot hybridization (FISH), image segmentation, multilayer perceptron (MLP), naive Bayesian classifier (NBC). I

Lerner, Boaz

282

A 3D INTENSITY MODEL BASED ON SPHERICAL HARMONICS FOR AUTOMATIC 3D SEGMENTATION OF HETEROCHROMATIN FOCI  

E-Print Network (OSTI)

A 3D INTENSITY MODEL BASED ON SPHERICAL HARMONICS FOR AUTOMATIC 3D SEGMENTATION OF HETEROCHROMATIN DKFZ Heidelberg and BIOQUANT, Research Group Genome Organization & Function ABSTRACT We introduce a 3D model-based approach for automatic segmentation of 3D fluorescent heterochromatin foci from microscopy

Rippe, Karsten

283

Using electrical, magnetic and acoustic sensors to detect damage in segmental concrete pipes subjected to permanent ground displacement  

E-Print Network (OSTI)

that the ac- tual repair cost of the pipelines reflects only a fraction of the total costs associate Permanent ground deformation Segmental concrete pipeline a b s t r a c t This paper describes results of an experimental study that used sensing methods for monitoring damage along segmental concrete pipelines resulting

Lynch, Jerome P.

284

BRAIN TUMOR VASCULAR NETWORK SEGMENTATION FROM MICRO-TOMOGRAPHY Xavier Descombes1  

E-Print Network (OSTI)

BRAIN TUMOR VASCULAR NETWORK SEGMENTATION FROM MICRO-TOMOGRAPHY Xavier Descombes1 , Franck for the systematic 3D analysis of supra- cellular structures such as micro-vascular networks [1, 2]. Since, France ABSTRACT Micro-tomography produces high resolution images of bio- logical structures

285

Ultrastructure of the Reproductive System of the Black Swamp Snake (Seminatrix pygaea). III. Sexual Segment  

E-Print Network (OSTI)

Ultrastructure of the Reproductive System of the Black Swamp Snake (Seminatrix pygaea). III. Sexual, Indiana ABSTRACT In mature male snakes and lizards, a distal portion of the nephron is hypertrophied segment of the kidney of a squa- mate, the natricine snake Seminatrix pygaea. Previous workers have

Sever, David M.

286

DEAD-END ELIMINATION AS A HEURISTIC FOR MIN-CUT IMAGE SEGMENTATION Mala L. Radhakrishnan  

E-Print Network (OSTI)

and branch-and-bound to eliminate solutions incompatible with global optimization of the objective functionV self(ip) + X i,jV, iself(ip) is the self energy of pixel i in state p are assigned to the same segment, their pairwise en- ergy is 0. The self energies are such that the energy

Su, Sara

287

Constellation-X Spectroscopy X-Ray Telescope Segmented Optic Assembly and Alignment Implementation  

E-Print Network (OSTI)

. ABSTRACT The Constellation-X mission will perform X-Ray science with improvements in energy resolutionConstellation-X Spectroscopy X-Ray Telescope Segmented Optic Assembly and Alignment Implementation and effective area over its predecessor missions. The primary instrument on each of the four Constellation

288

A GEODESIC VOTING METHOD FOR THE SEGMENTATION OF TUBULAR TREE AND CENTERLINES  

E-Print Network (OSTI)

A GEODESIC VOTING METHOD FOR THE SEGMENTATION OF TUBULAR TREE AND CENTERLINES Youssef Rouchdy1´el´ecom ParisTech, CNRS LTCI, 75013 Paris, France ABSTRACT This paper presents a geodesic voting method paths, or similarly geodesics relative to a weight potential P, to find a vessel between two end points

Cohen, Laurent

289

A Multi-resolution Stochastic Level Set Method for Mumford-Shah Image Segmentation  

E-Print Network (OSTI)

the computational cost and enhance the search for the global minimum. Furthermore, we derived a simple but useful image shown in Fig. 9, the proliferating-cell nuclear antigen (PCNA) clusters (black dots around segmentation: clustering, histogram-based, region-growing, graph partitioning and optimization model

Soatto, Stefano

290

Order Preserving and Shape Prior Constrained Intra-Retinal Layer Segmentation in Optical  

E-Print Network (OSTI)

the dataset we used for evaluation and reports empirical results. We conclude in Sect. 5. Fig. 1. An OCT B are: nerve fiber layer (NFL), ganglion cell layer and inner plexiform layer (GCL + IPL), inner nuclear layer (INL), outer plexiform layer (OPL), outer nuclear layer and inner segment (ONL + IS), con- necting

Heermann, Dieter W.

291

Intramolecular long-range correlations in polymer melts: The segmental size distribution and its moments  

Science Journals Connector (OSTI)

We present theoretical arguments and numerical results to demonstrate long-range intrachain correlations in concentrated solutions and melts of long flexible polymers, which cause a systematic swelling of short chain segments. They can be traced back to the incompressibility of the melt leading to an effective repulsion u(s)?s??R3(s)?ce?s when connecting two segments together where s denotes the curvilinear length of a segment, R(s) its typical size, ce?1??be3 the swelling coefficient, be the effective bond length, and ? the monomer density. The relative deviation of the segmental size distribution from the ideal Gaussian chain behavior is found to be proportional to u(s). The analysis of different moments of this distribution allows for a precise determination of the effective bond length be and the swelling coefficient ce of asymptotically long chains. At striking variance to the short-range decay suggested by Florys ideality hypothesis the bond-bond correlation function of two bonds separated by s monomers along the chain is found to decay algebraically as 1?s3?2. Effects of finite chain length are briefly considered.

J. P. Wittmer; P. Beckrich; H. Meyer; A. Cavallo; A. Johner; J. Baschnagel

2007-07-12T23:59:59.000Z

292

Surface forces arising from adsorbed ionic copolymers with hydrophobic and hydrophilic segments in colloidal dispersions  

Science Journals Connector (OSTI)

The effects of ionic copolymers with hydrophobic segments on the yield stresspH behavior of ZrO 2 dispersions were evaluated. These polyelectrolytes were two alternating copolymers; diisobutylene-maleic acid and ?-methyl styrene-maleic acid and a random styrene-maleic acidcopolymer. At low concentrations all three copolymers caused a much greater reduction in the maximum yield stress ? y max (at the neutral charge condition) compared with hydrophilic polyacrylic acid and acrylic acid-ester polymers. The reduction in ? y max was as much as 75%. The much larger reduction in ? y max was attributed to a thicker steric layer formed by the ionic copolymers with hydrophobic segments. At higher concentrations all three copolymers caused ? y max to increase. This was attributed to significant hydrophobiceffects and attraction. The degree of hydrophobic segment aggregation at the closest point of interaction between particles is now higher. This also caused an overall increase in the entropy relative to the state when the particles are far apart as the degree of hydrogen bonding among water molecules is less when the hydrophobic segments are aggregated.

Y. K. Leong; B. C. Ong; J. H. Tan; A. V. M. Chandramalar; Y. Y. Lim

2003-01-01T23:59:59.000Z

293

N-View Human Silhouette Segmentation in Cluttered, Partially Changing Environments ,  

E-Print Network (OSTI)

,9,16]. We, thus, present an approach, which conjoins probabilistic 3d fusion and energy based level set multiple static views. These estimates are integrated into a level set approach to provide the final segmen, the segmentation is usually performed based on probabilities [5] or energy minimization, e.g. level set approaches

294

THE EFFECT OF SEGMENTED ANODES ON THE PERFORMANCE AND PLUME OF A HALL THRUSTER  

E-Print Network (OSTI)

THE EFFECT OF SEGMENTED ANODES ON THE PERFORMANCE AND PLUME OF A HALL THRUSTER By: ALEXANDER W electrodes in the discharge channel of a Hall thruster to divert discharge current to and from the main anode and thus control the anode temperature. By placing a propellant reservoir in the anode, the evaporation

King, Lyon B.

295

Conf Proc IEEE Eng Med Biol Soc. Author manuscript Multimodal MRI segmentation of ischemic stroke lesions  

E-Print Network (OSTI)

of ischemic stroke lesions Kabir Yacine 1 , Dojat Michel 1 * , Scherrer Beno tî 1 , Forbes Florence 2 , Garbay in this paper is the automatic segmentation of stroke lesions on MR multi-sequences. Lesions enhance differently constructed an Atlas of blood supply territories to help clinicians in the determination of stroke subtypes

Paris-Sud XI, Université de

296

Human segmentation by geometrically fusing visible-light and thermal imageries  

Science Journals Connector (OSTI)

From depth sensors to thermal cameras, the increased availability of camera sensors beyond the visible spectrum has created many exciting applications. Most of these applications require combining information from these hyperspectral cameras with a regular ... Keywords: Human segmentation, Multi-camera fusion, Sensor fusion, Thermal cameras

Jian Zhao, Sen-Ching S. Cheung

2014-11-01T23:59:59.000Z

297

ICA based automatic segmentation of dynamic H215 O cardiac PET images  

Science Journals Connector (OSTI)

In this study, we applied an iterative independent component analysis (ICA) method for the separation of cardiac tissue components (myocardium, right, and left ventricle) from dynamic positron emission tomography (PET) images. Previous phantom and animal ... Keywords: image segmentation, independent component analysis (ICA), myocardial blood flow (MBF)

Margarita Margadn-Mndez; Anu Juslin; Sergey V. Nesterov; Kari Kalliokoski; Juhani Knuuti; Ulla Ruotsalainen

2010-05-01T23:59:59.000Z

298

MATLAB-ITK Interface for Medical Image Filtering, Segmentation, and Registration  

E-Print Network (OSTI)

MATLAB-ITK Interface for Medical Image Filtering, Segmentation, and Registration Vincent Chu, a wrapper for the ITK toolkit is developed to allow ITK algorithms to be called in MATLAB. ITK is a powerful savvy developers with expert knowledge of C++ and advanced programming concepts. MATLAB, on the other

Hamarneh, Ghassan

299

An iterative longest matching segment approach to speech enhancement with additive noise and channel distortion  

Science Journals Connector (OSTI)

This paper presents a new approach to speech enhancement from single-channel measurements involving both noise and channel distortion (i.e., convolutional noise), and demonstrates its applications for robust speech recognition and for improving noisy ... Keywords: Channel distortion, Corpus-based speech modeling, Longest matching segment, Noisy speech, Speech enhancement, Speech recognition

Ji Ming, Danny Crookes

2014-11-01T23:59:59.000Z

300

Jointly Aligning and Segmenting Multiple Web Photo Streams for the Inference of Collective Photo Storylines  

E-Print Network (OSTI)

Jointly Aligning and Segmenting Multiple Web Photo Streams for the Inference of Collective Photo,epxing}@cs.cmu.edu Abstract With an explosion of popularity of online photo sharing, we can trivially collect a huge number of photo streams for any interesting topics such as scuba diving as an outdoor recreational activity class

Xing, Eric P.

Note: This page contains sample records for the topic "distinct population segment" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

CONTEXT-BASED ENERGY ESTIMATOR: APPLICATION TO OBJECT SEGMENTATION ON THE TREE OF SHAPES  

E-Print Network (OSTI)

CONTEXT-BASED ENERGY ESTIMATOR: APPLICATION TO OBJECT SEGMENTATION ON THE TREE OF SHAPES Yongchao. A classical approach is to define an energy minimization framework, where interesting contours correspond to local minima of this energy. Active contours, graph cuts or minimum ratio cuts are instances of such ap

Paris-Sud XI, Université de

302

Temporal variations of the segmentation of slow to intermediate spreading mid-ocean ridges  

E-Print Network (OSTI)

Tectonophysics: Dynamics, convection currents and mantle plumes; KEYWORDS: Mid-ocean ridge, mantle convectionTemporal variations of the segmentation of slow to intermediate spreading mid-ocean ridges 1 missions reveal a set of small-scale lineations on the flanks of slow to intermediate spreading mid- ocean

Boyer, Edmond

303

SHAPE-CONSTRAINED SEGMENTATION APPROACH FOR ARCTIC MULTIYEAR SEA ICE FLOE ANALYSIS  

E-Print Network (OSTI)

for automatic ice floe tracking from Synthetic Aperture Radar or optical remote sensing imagery employ adaptiveSHAPE-CONSTRAINED SEGMENTATION APPROACH FOR ARCTIC MULTIYEAR SEA ICE FLOE ANALYSIS Yuliya Tarabalka Research Association, MD, USA. e-mail: yuliya.tarabalka@inria.fr ABSTRACT The melting of sea ice

Boyer, Edmond

304

A constraint propagation approach to structural model based image segmentation and recognition  

Science Journals Connector (OSTI)

The interpretation of complex scenes in images requires knowledge regarding the objects in the scene and their spatial arrangement. We propose a method for simultaneously segmenting and recognizing objects in images, that is based on a structural representation ... Keywords: Constraint satisfaction, Fuzzy set, Image interpretation, Structural model

Olivier Nempont; Jamal Atif; Isabelle Bloch

2013-10-01T23:59:59.000Z

305

Computational Biology and Chemistry 30 (2006) 241248 Unraveling the nature of the segmentation clock: Intrinsic  

E-Print Network (OSTI)

clock: Intrinsic disorder of clock proteins and their interaction map Sourav Roy, Santiago Schnell of the pathway proteins are intrinsically disordered and that the mechanism of their interaction likely involves; Segmentation clock; Notch pathway; Intrinsically disordered proteins; Molecular recognition elements 1

Radivojac, Predrag

306

Maximum Class Separability for Rough-Fuzzy C-Means Based Brain MR Image Segmentation  

E-Print Network (OSTI)

Maximum Class Separability for Rough-Fuzzy C-Means Based Brain MR Image Segmentation Pradipta Maji of brain MR images. The RFCM algorithm comprises a judicious integration of the of rough sets, fuzzy sets with vagueness and incompleteness in class definition of brain MR images, the membership function of fuzzy sets

Pal, Sankar Kumar

307

Simultaneous Segmentation and Motion Estimation in 4DCT Data Using a Variational Approach  

E-Print Network (OSTI)

by delivering a high radiation dose to the tumor region and a dose as low as possible to neighboring normalSimultaneous Segmentation and Motion Estimation in 4D­CT Data Using a Variational Approach Jan or dynamic MRI, open up the possibility to estimate respiratory induced tumor and organ motion

Lübeck, Universität zu

308

Comparative study of microwave tomography segmentation techniques based on GMM and KNN in breast cancer detection  

Science Journals Connector (OSTI)

Microwave Tomography Imaging (MTI) is a new technology for early breast cancer detection. Compared to other methods such as X-ray, Magnetic Resonance Imaging (MRI) and ultrasound, the MTI technology is almost radiation-free, and low cost. However, the ... Keywords: gaussian mixture model, microwave tomography imaging, segmentation

Chunqiu Wang, Wei Wang, Sung Shin, Soon I. Jeon

2014-10-01T23:59:59.000Z

309

Cortical Enhanced Tissue Segmentation of Neonatal Brain MR Images Acquired by a Dedicated Phased Array Coil  

E-Print Network (OSTI)

Cortical Enhanced Tissue Segmentation of Neonatal Brain MR Images Acquired by a Dedicated Phased Carolina at Chapel Hill Abstract The acquisition of high quality MR images of neonatal brains is largely hampered by their characteristically small head size and low tissue contrast. As a result, subsequent image

Utah, University of

310

A nonlinear elastic deformable template for soft structure segmentation. Application to the heart  

E-Print Network (OSTI)

A nonlinear elastic deformable template for soft structure segmentation. Application to the heart of the heart's anatomy and motion from temporal image sequences, more precisely Magnetic Resonance Imaging (MRI) sequences. Currently, a clinical examination results in a stack of slices covering the whole heart

Rouchdy, Youssef

311

cs281: Introduction to Computer Systems Tuesday Lab 5: BCD and 7-Segment Display  

E-Print Network (OSTI)

. Your group should also submit one circ file; see below for details. 3. Binary-Coded Decimal (BCD. In this lab, you will design and implement a code converter circuit whose input is the 4-bit code for a BCD has internal logic for the BCD to Seven-Segment code converter taking your four bits of input

Kretchmar, R. Matthew

312

Optimized Sampling Frequencies for Weld Reliability Assessments of Long Pipeline Segments  

E-Print Network (OSTI)

. To be on the safe side, regulations require that a pipeline be repaired when it is possible that p ?? p 0 , i.e., when p ?? p 0 . Need for Optimal Resource Allocation for Pipeline As­ sessment: Pipeline repairsOptimized Sampling Frequencies for Weld Reliability Assessments of Long Pipeline Segments Cesar J

Kreinovich, Vladik

313

Optimized Sampling Frequencies for Weld Reliability Assessments of Long Pipeline Segments  

E-Print Network (OSTI)

. To be on the safe side, regulations require that a pipeline be repaired when it is possible that p p0, i.e., when p p0. Need for Optimal Resource Allocation for Pipeline As- sessment: Pipeline repairs are extremelyOptimized Sampling Frequencies for Weld Reliability Assessments of Long Pipeline Segments Cesar J

Kreinovich, Vladik

314

THRESHOLDING-BASED SEGMENTATION AND APPLE GRADING BY MACHINE Devrim Unay, and Bernard Gosselin  

E-Print Network (OSTI)

THRESHOLDING-BASED SEGMENTATION AND APPLE GRADING BY MACHINE VISION Devrim Unay, and Bernard.tcts.fpms.ac.be ABSTRACT In this paper, a computer vision based system is introduced to automatically grade apple fruits outperformed others with 89 % recognition. 1. INTRODUCTION Computer vision based quality sorting of apple

Dupont, Stéphane

315

ARTIFICIAL NEURAL NETWORK-BASED SEGMENTATION AND APPLE GRADING BY MACHINE VISION  

E-Print Network (OSTI)

ARTIFICIAL NEURAL NETWORK-BASED SEGMENTATION AND APPLE GRADING BY MACHINE VISION Devrim Unay In this paper, a computer vision based system is introduced to automatically sort apple fruits. An artificial. INTRODUCTION Computer vision based quality sorting of apple fruits is nec- essary for increasing the speed

Dupont, Stéphane

316

From Sinograms to Surfaces: A Direct Approach To The Segmentation Of Tomographic Data  

E-Print Network (OSTI)

, there are technical limits to the projection angles from which data can be measured. These limits are due, calculated at the resolution of the input data. Several computational innovations make the approach feasi projections. This paper addresses the problem of segmentation in the context of such difficult tomography

Utah, University of

317

Effects of segmented electrode in Hall current plasma thrusters Y. Raitsesa)  

E-Print Network (OSTI)

Effects of segmented electrode in Hall current plasma thrusters Y. Raitsesa) Princeton University Plasma Physics Laboratory, P. O. Box 451, Princeton, New Jersey 08543 M. Keidar Aerospace Engineering, University of Michigan, Ann Arbor, Michigan 48109 D. Staack and N. J. Fisch Princeton University Plasma

318

GDP Formulation of a segmented CDU Swing Cut Model for Refinery Planning  

E-Print Network (OSTI)

AGO HGO HFO RG LPG R95 R100 RG LPG CN CGO RG Refinery Operation and Management - J.P. Favennec Crude1 GDP Formulation of a segmented CDU Swing Cut Model for Refinery Planning (Performance Analysis. Grossmann #12;2 Motivation · Refinery planning is an active area in process systems that strongly relies

Grossmann, Ignacio E.

319

GDP Formulation of a segmented CDU Swing Cut Model for Refinery Planning  

E-Print Network (OSTI)

RG LPG R95 R100 RG LPG CN CGO RG Refinery Operation and Management - J.P. Favennec Crude Distillation1 GDP Formulation of a segmented CDU Swing Cut Model for Refinery Planning Department of Chemical · Refinery planning is an active area in process systems that strongly relies on the accuracy of the CDU

Grossmann, Ignacio E.

320

Segment Generation and Clustering in the HTK Broadcast News Transcription System  

E-Print Network (OSTI)

Engineering Department, Trumpington Street, Cambridge, CB2 1PZ, UK e-mail: th223,sej28,at233,pcw,sjy¡ @eng audio stream has been segmented according to audio type with a frame accuracy up to 95%. Further, it must be able to deal with a continuous audio stream containing a mixture of any of the above data types

Drummond, Tom

Note: This page contains sample records for the topic "distinct population segment" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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321

Segment Generation and Clustering in the HTK Broadcast News Transcription System  

E-Print Network (OSTI)

Engineering Department, Trumpington Street, Cambridge, CB2 1PZ, UK e­mail: fth223,sej28,at233,pcw audio stream has been segmented according to audio type with a frame accuracy up to 95%. Further, it must be able to deal with a continuous audio stream containing a mixture of any of the above data types

Drummond, Tom

322

The mitochondrial elongation factors MIEF1 and MIEF2 exert partially distinct functions in mitochondrial dynamics  

SciTech Connect

Mitochondria are dynamic organelles whose morphology is regulated by a complex balance of fission and fusion processes, and we still know relatively little about how mitochondrial dynamics is regulated. MIEF1 (also called MiD51) has recently been characterized as a key regulator of mitochondrial dynamics and in this report we explore the functions of its paralog MIEF2 (also called MiD49), to learn to what extent MIEF2 is functionally distinct from MIEF1. We show that MIEF1 and MIEF2 have many functions in common. Both are anchored in the mitochondrial outer membrane, recruit Drp1 from the cytoplasm to the mitochondrial surface and cause mitochondrial fusion, and MIEF2, like MIEF1, can interact with Drp1 and hFis1. MIEF1 and MIEF2, however, also differ in certain aspects. MIEF1 and MIEF2 are differentially expressed in human tissues during development. When overexpressed, MIEF2 exerts a stronger fusion-promoting effect than MIEF1, and in line with this, hFis1 and Mff can only partially revert the MIEF2-induced fusion phenotype, whereas MIEF1-induced fusion is reverted to a larger extent by hFis1 and Mff. MIEF2 forms high molecular weight oligomers, while MIEF1 is largely present as a dimer. Furthermore, MIEF1 and MIEF2 use distinct domains for oligomerization: in MIEF1, the region from amino acid residues 109154 is required, whereas oligomerization of MIEF2 depends on amino acid residues 1 to 49, i.e. the N-terminal end. We also show that oligomerization of MIEF1 is not required for its mitochondrial localization and interaction with Drp1. In conclusion, our data suggest that the mitochondrial regulators MIEF1 and MIEF2 exert partially distinct functions in mitochondrial dynamics. - Highlights: MIEF1 and MIEF2 recruit Drp1 to mitochondria and cause mitochondrial fusion. MIEF2, like MIEF1, can interact with Drp1 and hFis1. MIEF1 and MIEF2 are differentially expressed in human tissues during development. MIEF2 exerts a stronger fusion-promoting effect than MIEF1. MIEF2 can form oligomers, while MIEF1 is largely present as a dimer.

Liu, Tong; Yu, Rong [Department of OncologyPathology, Karolinska Institutet, CCK R8:05, Karolinska University Hospital Solna, SE-171 76 Stockholm (Sweden); Jin, Shao-Bo [Department of Cell and Molecular Biology, Karolinska Institutet, SE-171 77 Stockholm (Sweden); Han, Liwei [Department of OncologyPathology, Karolinska Institutet, CCK R8:05, Karolinska University Hospital Solna, SE-171 76 Stockholm (Sweden); Lendahl, Urban [Department of Cell and Molecular Biology, Karolinska Institutet, SE-171 77 Stockholm (Sweden); Zhao, Jian, E-mail: Jian.Zhao@ki.se [Department of OncologyPathology, Karolinska Institutet, CCK R8:05, Karolinska University Hospital Solna, SE-171 76 Stockholm (Sweden); Nistr, Monica [Department of OncologyPathology, Karolinska Institutet, CCK R8:05, Karolinska University Hospital Solna, SE-171 76 Stockholm (Sweden)

2013-11-01T23:59:59.000Z

323

Low-complexity atlas-based prostate segmentation by combining global, regional, and local metrics  

SciTech Connect

Purpose: To improve the efficiency of atlas-based segmentation without compromising accuracy, and to demonstrate the validity of the proposed method on MRI-based prostate segmentation application. Methods: Accurate and efficient automatic structure segmentation is an important task in medical image processing. Atlas-based methods, as the state-of-the-art, provide good segmentation at the cost of a large number of computationally intensive nonrigid registrations, for anatomical sites/structures that are subject to deformation. In this study, the authors propose to utilize a combination of global, regional, and local metrics to improve the accuracy yet significantly reduce the number of required nonrigid registrations. The authors first perform an affine registration to minimize the global mean squared error (gMSE) to coarsely align each atlas image to the target. Subsequently, atarget-specific regional MSE (rMSE), demonstrated to be a good surrogate for dice similarity coefficient (DSC), is used to select a relevant subset from the training atlas. Only within this subset are nonrigid registrations performed between the training images and the target image, to minimize a weighted combination of gMSE and rMSE. Finally, structure labels are propagated from the selected training samples to the target via the estimated deformation fields, and label fusion is performed based on a weighted combination of rMSE and local MSE (lMSE) discrepancy, with proper total-variation-based spatial regularization. Results: The proposed method was applied to a public database of 30 prostate MR images with expert-segmented structures. The authors method, utilizing only eight nonrigid registrations, achieved a performance with a median/mean DSC of over 0.87/0.86, outperforming the state-of-the-art full-fledged atlas-based segmentation approach of which the median/mean DSC was 0.84/0.82 when applying to their data set. Conclusions: The proposed method requires a fixed number of nonrigid registrations, independent of atlas size, providing desirable scalability especially important for a large or growing atlas. When applied to prostate segmentation, the method achieved better performance to the state-of-the-art atlas-based approaches, with significant improvement in computation efficiency. The proposed rationale of utilizing jointly global, regional, and local metrics, based on the information characteristic and surrogate behavior for registration and fusion subtasks, can be extended naturally to similarity metrics beyond MSE, such as correlation or mutual information types.

Xie, Qiuliang; Ruan, Dan, E-mail: druan@mednet.ucla.edu [The Department of Radiation Oncology, University of California Los Angeles, California 90095 (United States)] [The Department of Radiation Oncology, University of California Los Angeles, California 90095 (United States)

2014-04-15T23:59:59.000Z

324

A method and software for segmentation of anatomic object ensembles by deformable m-reps  

SciTech Connect

Deformable shape models (DSMs) comprise a general approach that shows great promise for automatic image segmentation. Published studies by others and our own research results strongly suggest that segmentation of a normal or near-normal object from 3D medical images will be most successful when the DSM approach uses (1) knowledge of the geometry of not only the target anatomic object but also the ensemble of objects providing context for the target object and (2) knowledge of the image intensities to be expected relative to the geometry of the target and contextual objects. The segmentation will be most efficient when the deformation operates at multiple object-related scales and uses deformations that include not just local translations but the biologically important transformations of bending and twisting, i.e., local rotation, and local magnification. In computer vision an important class of DSM methods uses explicit geometric models in a Bayesian statistical framework to provide a priori information used in posterior optimization to match the DSM against a target image. In this approach a DSM of the object to be segmented is placed in the target image data and undergoes a series of rigid and nonrigid transformations that deform the model to closely match the target object. The deformation process is driven by optimizing an objective function that has terms for the geometric typicality and model-to-image match for each instance of the deformed model. The success of this approach depends strongly on the object representation, i.e., the structural details and parameter set for the DSM, which in turn determines the analytic form of the objective function. This paper describes a form of DSM called m-reps that has or allows these properties, and a method of segmentation consisting of large to small scale posterior optimization of m-reps. Segmentation by deformable m-reps, together with the appropriate data representations, visualizations, and user interface, has been implemented in software that accomplishes 3D segmentations in a few minutes. Software for building and training models has also been developed. The methods underlying this software and its abilities are the subject of this paper.

Pizer, Stephen M.; Fletcher, P. Thomas; Joshi, Sarang; Gash, A. Graham; Stough, Joshua; Thall, Andrew; Tracton, Gregg; Chaney, Edward L. [Medical Image Display and Analysis Group, University of North Carolina, Chapel Hill, North Carolina 27599 (United States)

2005-05-01T23:59:59.000Z

325

Thoracic cavity segmentation algorithm using multiorgan extraction and surface fitting in volumetric CT  

SciTech Connect

Purpose: To develop and validate a semiautomatic segmentation method for thoracic cavity volumetry and mediastinum fat quantification of patients with chronic obstructive pulmonary disease. Methods: The thoracic cavity region was separated by segmenting multiorgans, namely, the rib, lung, heart, and diaphragm. To encompass various lung disease-induced variations, the inner thoracic wall and diaphragm were modeled by using a three-dimensional surface-fitting method. To improve the accuracy of the diaphragm surface model, the heart and its surrounding tissue were segmented by a two-stage level set method using a shape prior. To assess the accuracy of the proposed algorithm, the algorithm results of 50 patients were compared to the manual segmentation results of two experts with more than 5 years of experience (these manual results were confirmed by an expert thoracic radiologist). The proposed method was also compared to three state-of-the-art segmentation methods. The metrics used to evaluate segmentation accuracy were volumetric overlap ratio (VOR), false positive ratio on VOR (FPRV), false negative ratio on VOR (FNRV), average symmetric absolute surface distance (ASASD), average symmetric squared surface distance (ASSSD), and maximum symmetric surface distance (MSSD). Results: In terms of thoracic cavity volumetry, the mean SD VOR, FPRV, and FNRV of the proposed method were (98.17 0.84)%, (0.49 0.23)%, and (1.34 0.83)%, respectively. The ASASD, ASSSD, and MSSD for the thoracic wall were 0.28 0.12, 1.28 0.53, and 23.91 7.64mm, respectively. The ASASD, ASSSD, and MSSD for the diaphragm surface were 1.73 0.91, 3.92 1.68, and 27.80 10.63 mm, respectively. The proposed method performed significantly better than the other three methods in terms of VOR, ASASD, and ASSSD. Conclusions: The proposed semiautomatic thoracic cavity segmentation method, which extracts multiple organs (namely, the rib, thoracic wall, diaphragm, and heart), performed with high accuracy and may be useful for clinical purposes.

Bae, JangPyo [Interdisciplinary Program, Bioengineering Major, Graduate School, Seoul National University, Seoul 110-744, South Korea and Department of Radiology, University of Ulsan College of Medicine, 388-1 Pungnap2-dong, Songpa-gu, Seoul 138-736 (Korea, Republic of)] [Interdisciplinary Program, Bioengineering Major, Graduate School, Seoul National University, Seoul 110-744, South Korea and Department of Radiology, University of Ulsan College of Medicine, 388-1 Pungnap2-dong, Songpa-gu, Seoul 138-736 (Korea, Republic of); Kim, Namkug, E-mail: namkugkim@gmail.com; Lee, Sang Min; Seo, Joon Beom [Department of Radiology, University of Ulsan College of Medicine, 388-1 Pungnap2-dong, Songpa-gu, Seoul 138-736 (Korea, Republic of)] [Department of Radiology, University of Ulsan College of Medicine, 388-1 Pungnap2-dong, Songpa-gu, Seoul 138-736 (Korea, Republic of); Kim, Hee Chan [Department of Biomedical Engineering, College of Medicine and Institute of Medical and Biological Engineering, Medical Research Center, Seoul National University, Seoul 110-744 (Korea, Republic of)] [Department of Biomedical Engineering, College of Medicine and Institute of Medical and Biological Engineering, Medical Research Center, Seoul National University, Seoul 110-744 (Korea, Republic of)

2014-04-15T23:59:59.000Z

326

Technical Safety Requirements for the B695 Segment of the Decontamination and Waste Treatment Facility  

SciTech Connect

This document contains Technical Safety Requirements (TSRs) for the Radioactive and Hazardous Waste Management (RHWM) Division's B695 Segment of the Decontamination and Waste Treatment Facility (DWTF) at Lawrence Livermore National Laboratory (LLNL). The TSRs constitute requirements regarding the safe operation of the B695 Segment of the DWTF. The TSRs are derived from the Documented Safety Analysis (DSA) for the B695 Segment of the DWTF (LLNL 2004). The analysis presented there determined that the B695 Segment of the DWTF is a low-chemical hazard, Hazard Category 3, nonreactor nuclear facility. The TSRs consist primarily of inventory limits as well as controls to preserve the underlying assumptions in the hazard analyses. Furthermore, appropriate commitments to safety programs are presented in the administrative controls section of the TSRs. The B695 Segment of the DWTF (B695 and the west portion of B696) is a waste treatment and storage facility located in the northeast quadrant of the LLNL main site. The approximate area and boundary of the B695 Segment of the DWTF are shown in the B695 Segment of the DWTF DSA. Activities typically conducted in the B695 Segment of the DWTF include container storage, lab-packing, repacking, overpacking, bulking, sampling, waste transfer, and waste treatment. B695 is used to store and treat radioactive, mixed, and hazardous waste, and it also contains equipment used in conjunction with waste processing operations to treat various liquid and solid wastes. The portion of the building called Building 696 Solid Waste Processing Area (SWPA), also referred to as B696S in this report, is used primarily to manage solid radioactive waste. Operations specific to the SWPA include sorting and segregating low-level waste (LLW) and transuranic (TRU) waste, lab-packing, sampling, and crushing empty drums that previously contained LLW. A permit modification for B696S was submitted to DTSC in January 2004 to store and treat hazardous and mixed waste. Upon approval of the permit modification, B696S rooms 1007, 1008, and 1009 will be able to store hazardous and mixed waste for up to 1 year. Furthermore, an additional drum crusher and a Waste Packaging Unit will be permitted to treat hazardous and mixed waste. RHWM generally processes LLW with no, or extremely low, concentrations of transuranics (i.e., much less than 100 nCi/g). Wastes processed often contain only depleted uranium and beta- and gamma-emitting nuclides, e.g., {sup 90}Sr, {sup 137}Cs, {sup 3}H. Chapter 5 of the DSA documents the derivation of TSRs and develops the operational limits that protect the safety envelope defined for this facility. The DSA is applicable to the handling of radioactive waste stored and treated in the B695 Segment of the DWTF. Section 5 of the TSR, Administrative Controls, contains those Administrative Controls necessary to ensure safe operation of the B695 Segment of the DWTF. A basis explanation follows each of the requirements described in Section 5.5, Specific Administrative Controls. The basis explanation does not constitute an additional requirement, but is intended as an expansion of the logic and reasoning behind development of the requirement. Programmatic Administrative Controls are addressed in Section 5.6.

Larson, H L

2007-09-07T23:59:59.000Z

327

Steam Dryer Segmentation and Packaging at Grand Gulf Nuclear Station - 13577  

SciTech Connect

Entergy recently performed an Extended Power Up-rate (EPU) on their Grand Gulf Nuclear Station, near Port Gibson, Mississippi. To support the EPU, a new Steam Dryer Assembly was installed during the last refueling outage. Due to limited access into the containment, the large Replacement Steam Dryer (RSD) had to be brought into the containment in pieces and then final assembly was completed on the refueling floor before installation into the reactor. Likewise, the highly contaminated Original Steam Dryer (OSD) had to be segmented into manageable sections, loaded into specially designed shielded containers, and rigged out of containment where they will be safely stored until final disposal is accomplished at an acceptable waste repository. Westinghouse Nuclear Services was contracted by Entergy to segment, package and remove the OSD from containment. This work was performed on critical path during the most recent refueling outage. The segmentation was performed underwater to minimize radiation exposure to the workers. Special hydraulic saws were developed for the cutting operations based on Westinghouse designs previously used in Sweden to segment ABB Reactor Internals. The mechanical cutting method was selected because of its proven reliability and the minimal cutting debris that is generated by the process. Maintaining stability of the large OSD sections during cutting was accomplished using a custom built support stand that was installed into the Moisture Separator Pool after the Moisture Separator was installed back in the reactor vessel. The OSD was then moved from the Steam Dryer Pool to the Moisture Separator Pool for segmentation. This scenario resolved the logistical challenge of having two steam dryers and a moisture separator in containment simultaneously. A water filtration/vacuum unit was supplied to maintain water clarity during the cutting and handling operations and to collect the cutting chips. (authors)

Kreitman, Paul J.; Sirianni, Steve R.; Pillard, Mark M. [Westinghouse Nuclear Services, 1 Energy Drive, Lake Bluff, Illinois 60044 (United States)] [Westinghouse Nuclear Services, 1 Energy Drive, Lake Bluff, Illinois 60044 (United States)

2013-07-01T23:59:59.000Z

328

A Decade of Population Change in Texas.  

E-Print Network (OSTI)

population, particularly from 1950 to 1960. It includes selected popula- tion projections to 1970 and points out some of their implications. Among the more significant findings are the following : 1. The total population of Texas on April 1, 1960, was 9... and communications facilities will have to be expanded to meet the needs of rapidly-growing numbers of people. 2. Population growth and losses are unevenly distributed in the State. Between 1950 and 1960, 143 Texas counties lost in population and 111 had...

Skrabanek, R. L.

1963-01-01T23:59:59.000Z

329

The Gaia-ESO Survey: Discovery of a spatially extended low-mass population in the Vela OB2 association  

E-Print Network (OSTI)

The nearby (distance~350-400 pc), rich Vela OB2 association, includes $\\gamma^2$ Velorum, one of the most massive binaries in the solar neighbourhood and an excellent laboratory for investigating the formation and early evolution of young clusters. Recent Gaia-ESO survey observations have led to the discovery of two kinematically distinct populations in the young (10-15 Myr) cluster immediately surrounding $\\gamma^2$ Velorum. Here we analyse the results of Gaia-ESO survey observations of NGC 2547, a 35 Myr cluster located two degrees south of $\\gamma^2$ Velorum. The radial velocity distribution of lithium-rich pre-main sequence stars shows a secondary population that is kinematically distinct from and younger than NGC 2547. The radial velocities, lithium absorption lines, and the positions in a colour-magnitude diagram of this secondary population are consistent with those of one of the components discovered around $\\gamma^2$ Velorum. This result shows that there is a young, low-mass stellar population spread...

Sacco, G G; Randich, S; Franciosini, E; Jackson, R J; Cottaar, M; Spina, L; Palla, F; Mapelli, M; Alfaro, E J; Bonito, R; Damiani, F; Frasca, A; Klutsch, A; Lanzafame, A; Bayo, A; Barrado, D; Jimenez-Esteban, F; Gilmore, G; Micela, G; Vallenari, A; Prieto, C Allende; Flaccomio, E; Carraro, G; Costado, M T; Jofre, P; Lardo, C; Magrini, L; Morbidelli, L; Prisinzano, L; Sbordone, L

2015-01-01T23:59:59.000Z

330

Evaluation of Motion Segmentation Quality for Aircraft Activity Surveillance Josep Aguilera, Horst Wildenauer, Martin Kampel Mark Borg, David Thirde, James Ferryman  

E-Print Network (OSTI)

- ability and robustness. In this paper we investigate the use of empirical discrepancy metrics objects and understanding the scene. In this paper, different discrepancy metrics for motion segmentation changes, weather conditions, shadows, and occlusions strongly impact the segmentation quality. Empirical

Reading, University of

331

Population Structure of Columbia River Basin Chinook Salmon and Steelhead Trout, Technical Report 2001.  

SciTech Connect

The population structure of chinook salmon and steelhead trout is presented as an assimilation of the life history forms that have evolved in synchrony with diverse and complex environments over their Pacific range. As poikilotherms, temperature is described as the overwhelming environmental influence that determines what life history options occur and where they are distributed. The different populations represent ecological types referred to as spring-, summer-, fall, and winter-run segments, as well as stream- and ocean-type, or stream- and ocean-maturing life history forms. However, they are more correctly described as a continuum of forms that fall along a temporal cline related to incubation and rearing temperatures that determine spawn timing and juvenile residence patterns. Once new habitats are colonized, members of the founding populations spread through adaptive evolution to assume complementary life history strategies. The related population units are collectively referred to as a metapopulation, and members most closely associated within common temporal and geographic boundaries are designated as first-order metapopulations. Population structure of chinook salmon and steelhead in the Columbia Basin, therefore, is the reflection of the genetic composition of the founding source or sources within the respective region, shaped by the environment, principally temperature, that defines life history evolutionary strategy to maximize fitness under the conditions delineated. The complexity of structure rests with the diversity of opportunities over the elevations that exist within the Basin. Consistent with natural selection, rather than simply attempting to preserve populations, the challenge is to provide opportunities to expand their range to new or restored habitat that can accommodate genetic adaptation as directional environmental changes are elaborated. Artificial propagation can have a critical role in this process, and the emphasis must be placed on promoting the ability for anadromous salmonids to respond to change by assuring that the genetic diversity to facilitate such responses is present. The key in developing an effective recovery program for chinook salmon and steelhead is to recognize that multiple life history forms associated with temperature characterize the species in the Columbia Basin, and recovery measures taken must address the biological requirements of the population unit within the environmental template identified. Unless such measures are given first and highest priority, establishment of biologically self-sustaining populations will be restrained.

Brannon, E.L.; National Science Foundation (U.S.)

2002-08-01T23:59:59.000Z

332

Math Minute 2.1 What Can You Learn from a Dot Plot? 1. Suppose that two sequences are identical except that a segment is inverted in one  

E-Print Network (OSTI)

except that a segment is inverted in one sequence, relative to the other. Explain how such an inversion

Campbell, A. Malcolm

333

Fish Population and Behavior Revealed by Instantaneous  

E-Print Network (OSTI)

Fish Population and Behavior Revealed by Instantaneous Continental Shelf­Scale Imaging Nicholas C-transect methods from slow-moving research vessels. These methods significantly undersample fish populations in time and space, leaving an incomplete and ambiguous record of abundance and behavior. We show that fish

334

Population growth and earth's human carrying capacity  

Science Journals Connector (OSTI)

...projected world grain har-vest of 2.1 billion tons in 2030 could feed 2.5 billion people at the U.S...Sustainable risks: An enduring given) (Sdu Uitgeverij Plantijnstraat, Den...estimated a maximum world population of 2 billion. The world's population...

JE Cohen

335

Oil Pollution and Seabird Populations [and Discussion  

Science Journals Connector (OSTI)

1 June 1982 research-article Oil Pollution and Seabird Populations [and...time to time by individual incidents of oil pollution, and throughout the year, especially...deal of public concern about the effect of oil pollution on the wellbeing of seabird populations...

1982-01-01T23:59:59.000Z

336

POPULATION ECOLOGY Population Dynamics of the Colorado Potato Beetle in an  

E-Print Network (OSTI)

POPULATION ECOLOGY Population Dynamics of the Colorado Potato Beetle in an Agroecosystem with Tomatoes and Potatoes with Management Implications to Processing Tomatoes CHRIS L. HARDING,1 S. J Environ. Entomol. 31(6): 1110Ð1118 (2002) ABSTRACT We evaluated the population dynamics of Colorado potato

337

Population genomics20-02-2009 Antnio Rodrigues; Bruno Santos / 59 Population Genomics  

E-Print Network (OSTI)

Population genomics20-02-2009 António Rodrigues; Bruno Santos / 59 Population Genomics 1 António Rodrigues (PDBC 2008) Bruno Santos (PDBC 2008) #12;Population genomics20-02-2009 António Rodrigues; Bruno Santos / 59 Contents 2 2 1000 genome project 1 Motivation and Introduction New generation sequencing

Goldschmidt, Christina

338

T-SA-00582-2004.R1 A Generic Audio Classification and Segmentation Approach for Multimedia Indexing and Retrieval 1 A Generic Audio Classification and  

E-Print Network (OSTI)

T-SA-00582-2004.R1 A Generic Audio Classification and Segmentation Approach for Multimedia Indexing and Retrieval 1 A Generic Audio Classification and Segmentation Approach for Multimedia Indexing and Retrieval of generic and automatic audio classification and segmentation for audio-based multimedia indexing

Gabbouj, Moncef

339

Evidence for Distinct Components of the Galactic Stellar Halo from 838 RR Lyrae Stars Discovered in the LONEOS-I Survey  

SciTech Connect

We present 838 ab-type RR Lyrae stars from the Lowell Observatory Near Earth Objects Survey Phase I (LONEOS-I). These objects cover 1430 deg{sup 2} and span distances ranging from 3-30kpc from the Galactic Center. Object selection is based on phased, photometric data with 28-50 epochs. We use this large sample to explore the bulk properties of the stellar halo, including the spatial distribution. The period-amplitude distribution of this sample shows that the majority of these RR Lyrae stars resemble Oosterhoff type I, but there is a significant fraction (26%) which have longer periods and appear to be Oosterhoff type II. We find that the radial distributions of these two populations have significantly different profiles ({rho}{sub OoI} {approx} R{sup -2.26{+-}0.07} and {rho}{sub OoII} {approx} R{sup -2.88{+-}0.11}). This suggests that the stellar halo was formed by at least two distinct accretion processes and supports dual-halo models.

Miceli, A; Rest, A; Stubbs, C W; Hawley, S L; Cook, K H; Magnier, E A; Krisciunas, K; Bowell, E; Koehn, B

2007-02-23T23:59:59.000Z

340

Interplay of relativistic and nonrelativistic transport in atomically precise segmented graphene nanoribbons  

E-Print Network (OSTI)

Graphene's isolation launched explorations of fundamental relativistic physics originating from the planar honeycomb lattice arrangement of the carbon atoms, and of potential technological applications in nanoscale electronics. Bottom-up fabricated atomically-precise segmented graphene nanoribbons, SGNRs, open avenues for studies of electrical transport, coherence, and interference effects in metallic, semiconducting, and mixed GNRs, with different edge terminations. Conceptual and practical understanding of electric transport through SGNRs is gained through nonequilibrium Green's function (NEGF) conductance calculations and a Dirac continuum model that absorbs the valence-to-conductance energy gaps as position-dependent masses, including topological-in-origin mass-barriers at the contacts between segments. The continuum model reproduces the NEGF results, including optical Dirac Fabry-Perot (FP) equidistant oscillations for massless relativistic carriers in metallic armchair SGNRs, and an unequally-spaced FP ...

Yannouleas, Constantine; Landman, Uzi

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "distinct population segment" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Apparatus and methods for impingement cooling of a side wall of a turbine nozzle segment  

DOE Patents (OSTI)

A gas turbine nozzle segment has outer and inner bands and a vane therebetween. Each band includes a nozzle wall, a side wall, a cover and an impingement plate between the cover and the nozzle wall defining two cavities on opposite sides of the impingement plate. Cooling steam is supplied to one cavity for flow through apertures of the impingement plate to cool the nozzle wall. The side wall of the band and inturned flange define with the nozzle wall an undercut region. The impingement plate has a turned flange welded to the inturned flange. A backing plate overlies the turned flange and aligned apertures are formed through the backing plate and turned flange to direct and focus cooling flow onto the side wall of the nozzle segment.

Burdgick, Steven Sebastian (Schenectady, NY)

2002-01-01T23:59:59.000Z

342

Antibody-mediated neutralization of Ebola virus can occur by two distinct mechanisms  

SciTech Connect

Human Ebola virus causes severe hemorrhagic fever disease with high mortality and there is no vaccine or treatment. Antibodies in survivors occur early, are sustained, and can delay infection when transferred into nonhuman primates. Monoclonal antibodies (mAbs) from survivors exhibit potent neutralizing activity in vitro and are protective in rodents. To better understand targets and mechanisms of neutralization, we investigated a panel of mAbs shown previously to react with the envelope glycoprotein (GP). While one non-neutralizing mAb recognized a GP epitope in the nonessential mucin-like domain, the rest were specific for GP1, were neutralizing, and could be further distinguished by reactivity with secreted GP. We show that survivor antibodies, human KZ52 and monkey JP3K11, were specific for conformation-dependent epitopes comprising residues in GP1 and GP2 and that neutralization occurred by two distinct mechanisms; KZ52 inhibited cathepsin cleavage of GP whereas JP3K11 recognized the cleaved, fusion-active form of GP.

Shedlock, Devon J., E-mail: shedlock@mail.med.upenn.ed [Biodefense Research Section, Vaccine Research Center, National Institute for Allergy and Infectious Disease, National Institutes of Health, 40 Convent Drive, MSC 3005, Bethesda, MD 20814 (United States); Bailey, Michael A., E-mail: mike.bailey@taurigroup.co [Biodefense Research Section, Vaccine Research Center, National Institute for Allergy and Infectious Disease, National Institutes of Health, 40 Convent Drive, MSC 3005, Bethesda, MD 20814 (United States); Popernack, Paul M. [Biodefense Research Section, Vaccine Research Center, National Institute for Allergy and Infectious Disease, National Institutes of Health, 40 Convent Drive, MSC 3005, Bethesda, MD 20814 (United States); Cunningham, James M. [Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115 (United States); Burton, Dennis R. [Department of Immunology, Scripps Research Institute, La Jolla, CA 92037 (United States); Department of Molecular Biology, Scripps Research Institute, La Jolla, CA 92037 (United States); Sullivan, Nancy J., E-mail: nsullivan@nih.go [Biodefense Research Section, Vaccine Research Center, National Institute for Allergy and Infectious Disease, National Institutes of Health, 40 Convent Drive, MSC 3005, Bethesda, MD 20814 (United States)

2010-06-05T23:59:59.000Z

343

On Relative Stabilities of Distinct Polyenes. An Extension of the Concept of Conjugated Paths  

E-Print Network (OSTI)

The study continues the previous development [MATCH, 72 (2014) 39-73] of the perturbative approach to relative stabilities of pi-electron systems of conjugated hydrocarbons modeled as sets of weakly-interacting initially-double (C=C) bonds. Distinct isomers of acyclic hydrocarbons (polyenes) are now under focus. The relevant total pi-electron energies (E) are expressed in the form of power series containing members (E_(k)) of even orders (k=0,2,4,...) with respect to the averaged resonance parameter of initially-single (C-C) bonds. Terms to within the sixth order (k=6) inclusive are shown to be of importance for discrimination between similar isomers. In this connection, missing expressions for corrections E_(6) are originally derived. Conjugated paths of various lengths (i.e. linear chains consisting of C=C and C-C bonds alternately) are shown to be the most important (but not the only) fragments contributing to stabilization of any acyclic pi-electron system. Again, new types of fragments (substructures) ar...

Gineityte, Viktorija

2015-01-01T23:59:59.000Z

344

Growth of equilibrium structures built from a large number of distinct component types  

E-Print Network (OSTI)

We use simple analytic arguments and lattice-based computer simulations to study the growth of structures made from a large number of distinct component types. Components possess 'designed' interactions, chosen to stabilize an equilibrium target structure in which each component type has a defined spatial position, and 'undesigned' interactions that allow components to bind in a compositionally-disordered way. We find that high-fidelity growth of the equilibrium target structure can happen in the presence of substantial attractive undesigned interactions, as long as the energy scale of the set of designed interactions is chosen appropriately. This observation may help explain why equilibrium DNA 'brick' structures self-assemble even if undesigned interactions are not suppressed [Ke et al. Science 338, 1177 (2012)]. We also find that high-fidelity growth of the target structure is most probable when designed interactions are drawn from a distribution that is as narrow as possible. We use this result to suggest how to choose complementary DNA sequences in order to maximize the fidelity of multicomponent self-assembly mediated by complementary DNA interactions. We also comment on the prospect of growing macroscopic structures in this manner

Lester O. Hedges; Ranjan V. Mannige; Stephen Whitelam

2014-05-09T23:59:59.000Z

345

Oblique needle segmentation and tracking for 3D TRUS guided prostate brachytherapy  

SciTech Connect

An algorithm was developed in order to segment and track brachytherapy needles inserted along oblique trajectories. Three-dimensional (3D) transrectal ultrasound (TRUS) images of the rigid rod simulating the needle inserted into the tissue-mimicking agar and chicken breast phantoms were obtained to test the accuracy of the algorithm under ideal conditions. Because the robot possesses high positioning and angulation accuracies, we used the robot as a ''gold standard,'' and compared the results of algorithm segmentation to the values measured by the robot. Our testing results showed that the accuracy of the needle segmentation algorithm depends on the needle insertion distance into the 3D TRUS image and the angulations with respect to the TRUS transducer, e.g., at a 10 deg. insertion anglulation in agar phantoms, the error of the algorithm in determining the needle tip position was less than 1 mm when the insertion distance was greater than 15 mm. Near real-time needle tracking was achieved by scanning a small volume containing the needle. Our tests also showed that, the segmentation time was less than 60 ms, and the scanning time was less than 1.2 s, when the insertion distance into the 3D TRUS image was less than 55 mm. In our needle tracking tests in chicken breast phantoms, the errors in determining the needle orientation were less than 2 deg. in robot yaw and 0.7 deg. in robot pitch orientations, for up to 20 deg. needle insertion angles with the TRUS transducer in the horizontal plane when the needle insertion distance was greater than 15 mm.

Wei Zhouping; Gardi, Lori; Downey, Donal B.; Fenster, Aaron [Imaging Research Laboratories, Robarts Research Institute, London, Ontario N6A 5K8 (Canada) and Biomedical Engineering Program, University of Western Ontario, London, Ontario N6A 5B9 (Canada); Imaging Research Laboratories, Robarts Research Institute, London, Ontario N6A 5K8 (Canada); Imaging Research Laboratories, Robarts Research Institute, London, Ontario N6A 5K8 (Canada) and Department of Radiology and Nuclear Medicine, University of Western Ontario, London, Ontario N6A 5A5 (Canada); Imaging Research Laboratories, Robarts Research Institute, London, Ontario N6A 5K8 (Canada); Biomedical Engineering Program, University of Western Ontario, London, Ontario N6A 5B9 (Canada) and Department of Radiology and Nuclear Medicine, University of Western Ontario, London, Ontario N6A 5A5 (Canada)

2005-09-15T23:59:59.000Z

346

Market segmentation of visitors to Fort Wilkins State Park using a hierarchical clustering approach  

E-Print Network (OSTI)

describe natural groupings of people. 16 In short, what direction does literature provide for this re- search project? Initially it was shown that state parks are for people. The objective of the parks is to provide satisfying ex- periences to park...MARKET SEGMENTATION OF VISITORS TO FORT WILKINS STATE PARK USING A HIERARCHICAL CLUSTERING APPROACH A Thesis by THOMAS MARK FISHER Submitted to the Graduate College of Texas AAM University in partial fulfillment of the requirement...

Fisher, Thomas Mark

2012-06-07T23:59:59.000Z

347

Automatic Evaluation of Brain MR Segmentation Techniques by Level of Sylvain Bouix1,2  

E-Print Network (OSTI)

Automatic Evaluation of Brain MR Segmentation Techniques by Level of Agreement Sylvain Bouix1 of 40 pairs of MR volumes acquired on a GE 1.5T scanner. The first volume is a 0.9375x0.9375x1.5mm SPGR,2 , Marcos Martin-Fernandez2 , Lida Ungar1 , Martha E. Shenton1 , Robert W. McCarley1 1 Dept of Psychiatry

348

Background foreground segmentation with RGB-D Kinect data: An efficient combination of classifiers  

Science Journals Connector (OSTI)

Low cost RGB-D cameras such as the Microsoft's Kinect or the Asus's Xtion Pro are completely changing the computer vision world, as they are being successfully used in several applications and research areas. Depth data are particularly attractive and ... Keywords: Background/foreground segmentation, Color and depth data combination, Combination of classifiers, Microsoft Kinect, Mixture of Gaussian, Object detection, RGB-D cameras, RGB-D dataset

Massimo Camplani; Luis Salgado

2014-01-01T23:59:59.000Z

349

New Embolization Microcoil Consisting of Firm and Flexible Segments: Preliminary Clinical Experience  

SciTech Connect

Purpose. To describe the preliminary clinical experience with a new embolization microcoil. Methods. The microcoil was made of a platinum coil spring, and consisted of firm and flexible segments. The firm segment functioned as an anchor and the flexible segment was well compacted to occlude the arteries. No Dacron fiber was attached. Seventy-one new microcoils were placed via microcatheters in 28 visceral arteries of 17 patients. Two other types of microcoils with Dacron fibers were used together in 8 arteries. Results. Sixty-nine new microcoils were placed and compacted successfully. Two coils were misplaced; one was retrieved and the other was left in the migrated artery, which remained patent 5 months later. All 28 arteries were occluded, and the goals of intervention were achieved successfully in all 17 cases. Conclusion. The new microcoils anchored and compacted well in the arteries. The clinical feasibility of this coil design was confirmed. The additional use of other types of microcoils with Dacron fiber was necessary to obtain rapid occlusion in some cases.

Irie, Toshiyuki [Hitachi General Hospital, Department of Radiology (Japan)], E-mail: toshiyuki.irie@ibabyo.hitachi.co.jp

2006-12-15T23:59:59.000Z

350

Hanford Site Regional Population - 2010 Census  

SciTech Connect

The U.S. Department of Energy conducts radiological operations in south-central Washington State. Population dose estimates must be performed to provide a measure of the impact from site radiological releases. Results of the U.S. 2010 Census were used to determine counts and distributions for the residential population located within 50-miles of several operating areas of the Hanford Site. Year 2010 was the first census year that a 50-mile population of a Hanford Site operational area exceeded the half-million mark.

Hamilton, Erin L.; Snyder, Sandra F.

2011-08-12T23:59:59.000Z

351

Needle segmentation using 3D Hough transform in 3D TRUS guided prostate transperineal therapy  

SciTech Connect

Purpose: Prostate adenocarcinoma is the most common noncutaneous malignancy in American men with over 200 000 new cases diagnosed each year. Prostate interventional therapy, such as cryotherapy and brachytherapy, is an effective treatment for prostate cancer. Its success relies on the correct needle implant position. This paper proposes a robust and efficient needle segmentation method, which acts as an aid to localize the needle in three-dimensional (3D) transrectal ultrasound (TRUS) guided prostate therapy. Methods: The procedure of locating the needle in a 3D TRUS image is a three-step process. First, the original 3D ultrasound image containing a needle is cropped; the cropped image is then converted to a binary format based on its histogram. Second, a 3D Hough transform based needle segmentation method is applied to the 3D binary image in order to locate the needle axis. The position of the needle endpoint is finally determined by an optimal threshold based analysis of the intensity probability distribution. The overall efficiency is improved through implementing a coarse-fine searching strategy. The proposed method was validated in tissue-mimicking agar phantoms, chicken breast phantoms, and 3D TRUS patient images from prostate brachytherapy and cryotherapy procedures by comparison to the manual segmentation. The robustness of the proposed approach was tested by means of varying parameters such as needle insertion angle, needle insertion length, binarization threshold level, and cropping size. Results: The validation results indicate that the proposed Hough transform based method is accurate and robust, with an achieved endpoint localization accuracy of 0.5 mm for agar phantom images, 0.7 mm for chicken breast phantom images, and 1 mm for in vivo patient cryotherapy and brachytherapy images. The mean execution time of needle segmentation algorithm was 2 s for a 3D TRUS image with size of 264 Multiplication-Sign 376 Multiplication-Sign 630 voxels. Conclusions: The proposed needle segmentation algorithm is accurate, robust, and suitable for 3D TRUS guided prostate transperineal therapy.

Qiu Wu [Department of Biomedical Engineering, School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074 (China); Imaging Research Laboratories, Robarts Research Institute, Western University, London, Ontario N6A 5K8 (Canada); Yuchi Ming; Ding Mingyue [Department of Biomedical Engineering, School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074 (China); Tessier, David; Fenster, Aaron [Imaging Research Laboratories, Robarts Research Institute, University of Western Ontario, London, Ontario N6A 5K8 (Canada)

2013-04-15T23:59:59.000Z

352

Non-parametric geodesic active regions: Method and evaluation for cerebral aneurysms segmentation in 3DRA and CTA  

E-Print Network (OSTI)

Non-parametric geodesic active regions: Method and evaluation for cerebral aneurysms segmentation compares to other alternative techniques based on deformable models, namely parametric geodesic active aneurysm; Geodesic active regions; Differential invariants; Non-parametric probability estimation; Model

Frangi, Alejandro

353

IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS, VOL. 17, NO. 1, JANUARY 2009 103 Hierarchical Segmentation for Hardware  

E-Print Network (OSTI)

) with a hierarchical segmentation scheme targeting hardware implementation. The methodology provides significant-mail: dongu@mojix.com). R. C. C. Cheung is with Solomon Systech Limited, Hong Kong (e-mail: cc- cheung

Luk, Wayne

354

Ethylene biosynthesis: Methionine as an in-vivo precursor of ethylene in auxin-treated mungbean hypocotyl segments  

Science Journals Connector (OSTI)

Ethylene production was induced in excised hypocotyl segments...14C-Methionine was efficiently incorporated into C2H4, although cold methionine added at substrate level did not enhance C2H4 production. Incorporat...

Shingo Sakai; Hidemasa Imaseki

355

Determinants and impact of microvascular obstruction in successfully reperfused ST-segment elevation myocardial infarction. Assessment by magnetic resonance imaging  

Science Journals Connector (OSTI)

Microvascular obstruction (MVO) is an important and independent determinant of post-infarct remodeling. Fifty-two patients with a successfully reperfused ST-segment elevation acute myocardial infarction (MI) w...

Jan Bogaert; Maria Kalantzi; Frank E. Rademakers; Steven Dymarkowski

2007-10-01T23:59:59.000Z

356

Estimating population size by genotyping faeces  

Science Journals Connector (OSTI)

...CA 91360, USA Population size is a fundamental biological parameter that is di cult...In Ecological census techniques, a handbook (ed. W. J. Sutherland), pp. 11...In Ecological census techniques, a handbook (ed. W. J. Sutherland), pp. 1...

1999-01-01T23:59:59.000Z

357

Fact #661: February 7, 2011 Population Density  

Energy.gov (U.S. Department of Energy (DOE))

The density of the population in the U.S., measured as the number of people per square mile, affects the way goods and people are transported. The newly released 2010 Census data show that, on a...

358

Ocean currents help explain population genetic structure  

Science Journals Connector (OSTI)

...original work is properly cited. Ocean currents help explain population genetic...larval dispersal estimates based on ocean current observations, we demonstrate...Data-assimilated models of ocean currents for the study region were produced...

2010-01-01T23:59:59.000Z

359

Metabolic Gene Polymorphism Frequencies in Control Populations  

Science Journals Connector (OSTI)

...collaboration with the GSEC Project. 1 Vineis, P., Malats...2000. 9 Taioli E. International collaborative study...Malats N., Camus-Radon A. M., Nyberg F...populations. | Using the International Project on Genetic Susceptibility...

Seymour Garte; Laura Gaspari; Anna-Karin Alexandrie; Christine Ambrosone; Herman Autrup; Judith L. Autrup; Helena Baranova; Lise Bathum; Simone Benhamou; Paolo Boffetta; Christine Bouchardy; Katja Breskvar; Jurgen Brockmoller; Ingolf Cascorbi; Margie L. Clapper; Christiane Coutelle; Ann Daly; Marco DellOmo; Vita Dolzan; Carolyn M. Dresler; Anthony Fryer; Aage Haugen; David W. Hein; Allan Hildesheim; Ari Hirvonen; Ling-Ling Hsieh; Magnus Ingelman-Sundberg; Ivan Kalina; Daehee Kang; Masahiro Kihara; Chikako Kiyohara; Pierre Kremers; Philip Lazarus; Loc Le Marchand; Maria Celeste Lechner; Ester M. M. van Lieshout; Stephanie London; Johannes J. Manni; Christine M. Maugard; Shunji Morita; Valle Nazar-Stewart; Kazumasa Noda; Yoshio Oda; Fritz F. Parl; Roberta Pastorelli; Irene Persson; Wilbert H. M. Peters; Agneta Rannug; Timothy Rebbeck; Angela Risch; Liliane Roelandt; Marjorie Romkes; David Ryberg; Jan Salagovic; Bernadette Schoket; Janeric Seidegard; Peter G. Shields; Edith Sim; Daniel Sinnet; Richard C. Strange; Isabel Stcker; Haruhiko Sugimura; Jordi To-Figueras; Paolo Vineis; Mimi C. Yu; and Emanuela Taioli

2001-12-01T23:59:59.000Z

360

The genetics of Drosophila subobscura populations  

Science Journals Connector (OSTI)

The natural population of Drosophila subobscura of Mt. Parnes has been followed for two successive years and the frequency of the gene arrangements determined. Some changes occured in the first year but do not ex...

Costas B. Krimbas

Note: This page contains sample records for the topic "distinct population segment" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

United Nations Population Information Network | Open Energy Information  

Open Energy Info (EERE)

United Nations Population Information Network United Nations Population Information Network Jump to: navigation, search Tool Summary LAUNCH TOOL Name: United Nations Population Information Network Agency/Company /Organization: United Nations Focus Area: People and Policy Resource Type: Dataset Website: www.un.org/popin/ Cost: Free United Nations Population Information Network Screenshot References: United Nations Population Information Network[1] Logo: United Nations Population Information Network The Population Information Network (POPIN) strives to make international, regional and national population information, particularly information available from United Nations sources, easily available to the international community. "The Population Information Network (POPIN) was founded on 9 May 1979, by

362

Geomechanical Simulations of CO2 Storage Integrity using the Livermore Distinct Element Method  

SciTech Connect

Large-scale carbon capture and sequestration (CCS) projects involving annual injections of millions of tons of CO{sub 2} are a key infrastructural element needed to substantially reduce greenhouse gas emissions. The large rate and volume of injection will induce pressure and stress gradients within the formation that could activate existing fractures and faults, or drive new fractures through the caprock. We will present results of an ongoing investigation to identify conditions that will activate existing fractures/faults or make new fractures within the caprock using the Livermore Distinct Element Code (LDEC). LDEC is a multiphysics code, developed at LLNL, capable of simulating dynamic fracture of rock masses under a range of conditions. As part of a recent project, LDEC has been extended to consider fault activation and dynamic fracture of rock masses due to pressurization of the pore-space. We will present several demonstrations of LDEC functionality and applications of LDEC to CO{sub 2} injection scenarios including injection into an extensively fractured rockmass. These examples highlight the advantages of explicitly including the geomechanical response of each interface within the rockmass. We present results from our investigations of Teapot Dome using LDEC to study the potential for fault activation during injection. Using this approach, we built finite element models of the rock masses surrounding bounding faults and explicitly simulated the compression and shear on the fault interface. A CO{sub 2} injection source was introduced and the area of fault activation was predicted as a function of injection rate. This work presents an approach where the interactions of all locations on the fault are considered in response to specific injection scenarios. For example, with LDEC, as regions of the fault fail, the shear load is taken up elsewhere on the fault. The results of this study are consistent with previous studies of Teapot Dome and indicate significantly elevated pore pressures are required to activate the bounding faults, given the assumed in situ stress state on the faults.

Morris, J P; Johnson, S M; Friedmann, S J

2008-07-11T23:59:59.000Z

363

A B C D E F G H I J K RETI PHASE 2A TRANSMISSION LINE SEGMENT ANALYSIS  

E-Print Network (OSTI)

37 38 39 A B C D E F G H I J K RETI PHASE 2A TRANSMISSION LINE SEGMENT ANALYSIS MDPT_DESC_1 DESC D E F G H I J K RETI PHASE 2A TRANSMISSION LINE SEGMENT ANALYSIS IRMT_SCEJ_2 SCEJ_CAMI_1 SCEJ_PISG_1 Monument X Other Relevant Information (e.g., line size) ROW/Corridor Information 1 ROW no change X X X X 2

364

Doppler segmentation  

E-Print Network (OSTI)

is then 2 x 10 Hz/sec. With this frequency modulation rate, the 5 usec pulse would obta1n a 100 MHz bandwidth and, from Equation (3. 2), the system would be able to provide a 1. 5 meter range resolut1on. 5. Transmiss1on Power In the previous s1gnal... OF CONTENTS ABSTRACT . ACKNOWLEDGEMENT TABLE OF CONTENTS LIST OF FIGURES CHAPTER I. INTRODUCTION . CHAPTER II. SYSTEM DEVELOPMENT 1. Range Imaging System 2. Range and Velocity Acquisition by Linear FM Pulse . 3. Infrared Range/Doppler Imaging System...

Yeh, Chih-Ping

2012-06-07T23:59:59.000Z

365

Simlag: Simulation language for genetic populations  

E-Print Network (OSTI)

the dominance model, only when linkage is rather tight (r=0. 005) is it likely to be detectable by decreasing the advance of a popu- lation undergoing selection. Praser (1962) also found that there were distinct lags in the advance under selection much... that the scope of their research will be considerably extended in the near future. Latter published two papers which recorded the re- sults of his experimentation with genetic simulation t, echniques on th- response to artificial selection due to autosomal...

Pfaffenberger, Roger C.

1968-01-01T23:59:59.000Z

366

Material herein originally published in: Committee on Evaluating Quality Outreach. (1996). Points of Distinction: A Guidebook for  

E-Print Network (OSTI)

, and assessed. They may have distinct components that are integral parts of the larger design which one may plan Outreach and suggested in the matrix here, reprinted from the guide- book. EVALUATING QUALITY OUTREACH, instructional or non-instructional. The matrix may also serve as a planning guide for those initiating outreach

367

Classification of Compounds with Distinct or Overlapping Multi-Target Activities and Diverse Molecular Mechanisms Using Emerging Chemical Patterns  

Science Journals Connector (OSTI)

Classification of Compounds with Distinct or Overlapping Multi-Target Activities and Diverse Molecular Mechanisms Using Emerging Chemical Patterns ... Basic input data for building an ECP classifier consist of descriptor values of learning set compounds. ... posterior segregation family member (pos-1) ...

Vigneshwaran Namasivayam; Ye Hu; Jenny Balfer; Jrgen Bajorath

2013-05-21T23:59:59.000Z

368

About the cover: The Oak Ridge Reservation is a complex, distinctive, and valuable natural and industrial resource,  

E-Print Network (OSTI)

#12;i About the cover: The Oak Ridge Reservation is a complex, distinctive, and valuable natural class for fall 1999, we accepted the opportunity to help create the Oak Ridge Reservation Annual Site programs at the Department of Energy's Oak Ridge facilities. The idea of nuclear radiation is incredibly

Pennycook, Steve

369

Detailed Hydration Maps of Benzene and Cyclohexane Reveal Distinct Water Structures Tanya M. Raschke* and Michael Levitt  

E-Print Network (OSTI)

of water to exclude apolar groups play a key role in the stabilization of protein native states,1Detailed Hydration Maps of Benzene and Cyclohexane Reveal Distinct Water Structures Tanya M of a single solute in water. Detailed, spatially resolved, three-dimensional maps of the density of the water

Raschke, Tanya M.

370

D-Fusion: a Distinctive Fusion Calculus Michele Boreale1, Maria Grazia Buscemi2, and Ugo Montanari2  

E-Print Network (OSTI)

D-Fusion: a Distinctive Fusion Calculus Michele Boreale1, Maria Grazia Buscemi2, and Ugo Montanari2 Informatica, Universit`a di Pisa, Italy. boreale@dsi.unifi.it {buscemi,ugo}@di.unipi.it Abstract. Fusion that there is no uniform fully abstract embedding of pi-calculus into Fusion. This fact motivates the introduction of a new

Parrow, Joachim

371

D-Fusion: a Distinctive Fusion Calculus Michele Boreale1, Maria Grazia Buscemi2, and Ugo Montanari2  

E-Print Network (OSTI)

D-Fusion: a Distinctive Fusion Calculus Michele Boreale1, Maria Grazia Buscemi2, and Ugo Montanari2 Informatica, Universit`a di Pisa, Italy. boreale@dsi.unifi.it {buscemi,ugo}@di.unipi.it Abstract. Fusion of a new calculus, D-Fusion, with two binders, and . We show that D-Fusion is strictly more expressive

Parrow, Joachim

372

Mutual Information Analysis Reveals Coevolving Residues in Tat That Compensate for Two Distinct Functions in HIV-1  

E-Print Network (OSTI)

, Xiamen University, Xiamen 361005, China Background: It is not well understood how HIV-1 Tat performs, Tat variants that mimic HIV-1 subtypes B or C at sites 35 and 39 have evolved orthogonal strengthsMutual Information Analysis Reveals Coevolving Residues in Tat That Compensate for Two Distinct

Schaffer, David V.

373

Adaptation of Beef Cattle to Stressful Environments and Integrated Beef Systems for Production of Consistently Distinctive High-quality Beef  

E-Print Network (OSTI)

Adaptation of Beef Cattle to Stressful Environments and Integrated Beef Systems for Production. Integrated Beef Systems for the Production of Consistently Distinctive High-quality Beef Evaluation of system of system elements sensitive to product quality (e.g., genetics for adaptation, genetics characterizing

374

New thermal model with distinct freeze-out temperatures for baryons and mesons  

SciTech Connect

A significant amount of experimental data for particle production in high-energy heavy ion collisions (10 - 200 GeV/A at center of mass) has been accumulated during last years. Many different theoretical attempts have tried to describe these data using thermal models in the approximation of global thermal equilibrium considering only one freeze-out temperature. However the thermal models often are not able to describe adequately the whole multiplicities of hadrons. For instance, the abundance of strange particles is overestimate and the pion yields are underestimated. In this work is presented a thermal hadronic model with two different temperatures in order to describe the baryonic and mesonic chemical freeze-out in ultra-relativistic heavy ion collisions. The model is used to fit the particle population ratios of the hadrons produced in the reaction. The proposal is not merely to incorporate one additional degree of freedom in the adjustment procedure of data, but to present and alternative scenario for the freeze out stage in the collisional proces s. This new reformulated version of thermal model was applied to a set of data, offering a rather good improvement in the fitting of the calculated particle ratios to the data. The results suggest that the introduced model makes the thermal approach more robust to handle with a larger number of colliding systems and a more comprehensive set of reaction observables.

De Assis, Leonardo P. G.; Duarte, Sergio B. [Centro Brasileiro de Pesquisas Fisicas Dr. Xavier Sigaud 150, 22290-180 Rio de Janeiro-RJ (Brazil); Chiapparini, Marcelo [Instituto de Fisica, Universidade do Estado do Rio de Janeiro Rua Sao Francisco Xavier 524, 20 550-900 Rio de Janeiro-RJ (Brazil); Hirsch, Luciana R. [Departamento de Fisica, Universidade Tecnologica Federal do Parana Av. Sete de Setembro, 3165, 8 0230-901 Curitiba-PR (Brazil); Delfino, Antonio Jr. [Instituto de Fisica, Universidade Federal Fluminense Av. Gal. Milton Tavares de Souza, 24210-346 Niteroi-RJ (Brazil)

2013-05-06T23:59:59.000Z

375

On the Spatial Distribution of Stellar Populations in the Large Magellanic Cloud  

E-Print Network (OSTI)

We measure the angular correlation function of stars in a region of the Large Magellanic Cloud (LMC) that spans 2 degrees by 1.5 degrees. We find that the correlation functions of stellar populations are represented well by exponential functions of the angular separation for separations between 2 and 40 arcmin (corresponding to ~ 30 pc and 550 pc for an LMC distance of 50 kpc). The inner boundary is set by the presence of distinct, highly correlated structures, which are the more familiar stellar clusters, and the outer boundary is set by the observed region's size and the presence of two principal centers of star formation within the region. We also find that the normalization and scale length of the correlation function changes systematically with the mean age of the stellar population. The existence of positive correlation at large separations (~300 pc), even in the youngest population, argues for large-scale hierarchical structure in current star formation. The evolution of the angular correlation toward lower normalizations and longer scale lengths with stellar age argues for the dispersion of stars with time. We show that a simple, stochastic, self-propagating star formation model is qualitatively consistent with this behavior of the correlation function.

Jason Harris; Dennis Zaritsky

1999-02-20T23:59:59.000Z

376

Analysis of sailfish (Istiophorus platypterus) population structure in the North Pacific Ocean  

Science Journals Connector (OSTI)

Abstract The global genetic population structure of sailfish is not well understood, nor has it been well characterized in any of the major ocean basins. In this study, we surveyed the pattern of genetic differentiation of sailfish in the North Pacific Ocean using 307bp of sequence of the mtDNA control region I and five tetra-nucleotide microsatellite loci for 92 sailfish representing three North Pacific localities. We report significant genetic differentiation with both mitochondrial and nuclear markers between the western North Pacific Ocean collection from Taiwan (n=39) and the eastern North Pacific Ocean collections from Mexico (n=37) and Costa Rica (n=16), the latter of which were not significantly different from each other. These results corroborate genetic heterogeneity in the North Pacific previously observed using restriction fragment length polymorphisms (RFLPs) of mtDNA, and three microsatellite loci, and indicate that sailfish from the eastern and the western North Pacific Ocean belong to distinct populations. Consistent with the levels of mtDNA variation reported in other marine species, sailfish in the eastern Pacific Ocean displayed significantly (pPacific Ocean. In future studies, sample sizes and geographic coverage should be increased to resolve the population structure throughout the entire Pacific Ocean.

Ching-Ping Lu; Jaime R. Alvarado Bremer; Jessica L. McKenzie; Wei-Chuan Chiang

2014-01-01T23:59:59.000Z

377

THE RESONANT TRANS-NEPTUNIAN POPULATIONS  

SciTech Connect

The trans-Neptunian objects (TNOs) trapped in mean-motion resonances with Neptune were likely emplaced there during planet migration late in the giant-planet formation process. We perform detailed modeling of the resonant objects detected in the Canada-France Ecliptic Plane Survey (CFEPS) in order to provide population estimates and, for some resonances, constrain the complex internal orbital element distribution. Detection biases play a critical role because phase relationships with Neptune make object discovery more likely at certain longitudes. This paper discusses the 3:2, 5:2, 2:1, 3:1, 5:1, 4:3, 5:3, 7:3, 5:4, and 7:4 mean-motion resonances, all of which had CFEPS detections, along with our upper limit on 1:1 Neptune Trojans (which is consistent with their small population estimated elsewhere). For the plutinos (TNOs in the 3:2 resonance) we refine the orbital element distribution given by Kavelaars et al. in 2009 and show that steep H-magnitude distributions (N(H){proportional_to}10{sup {alpha}H}, with {alpha} = 0.8-0.9) are favored in the range H{sub g} = 8-9, and confirm that this resonance does not share the inclination distribution of the classical Kuiper Belt. We give the first population estimate for the 5:2 resonance and find that, to within the uncertainties, the population is equal to that of the 3:2 ({approx_equal}13,000 TNOs with H{sub g} < 9.16), whereas the 2:1 population is smaller by a factor of 3-4 compared to the other two resonances. We also measure significant populations inhabiting the 4:3, 5:3, 7:3, 5:4, 7:4, 3:1, and 5:1 resonances, with H{sub g} < 9.16 (D > 100 km) populations in the thousands. We compare our intrinsic population and orbital element distributions with several published models of resonant-TNO production; the most striking discrepancy is that resonances beyond the 2:1 are in reality more heavily populated than in published models.

Gladman, B.; Lawler, S. M.; Van Laerhoven, C. [Department of Physics and Astronomy, 6224 Agricultural Road, University of British Columbia, Vancouver, BC V6T 1Z1 (Canada); Petit, J.-M.; Rousselot, P. [Institut UTINAM, CNRS-UMR 6213, Observatoire de Besancon, BP 1615, 25010 Besancon Cedex (France); Kavelaars, J. [Herzberg Institute of Astrophysics, National Research Council of Canada, Victoria, BC V9E 2E7 (Canada); Jones, R. L. [Department of Astronomy, University of Washington, Seattle, WA 98195 (United States); Parker, J. Wm.; Bieryla, A. [Southwest Research Institute, 1050 Walnut Street, Suite 300, Boulder, CO 80302 (United States); Nicholson, P. [Department of Astronomy, Cornell University, Ithaca, NY 14853 (United States); Ashby, M. L. N. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)

2012-07-15T23:59:59.000Z

378

An analysis of numerical trends in African elephant populations.  

E-Print Network (OSTI)

?? The elephant debate deals largely with population size, how elephant numbers change over time, how they may affect vegetation, and how their populations should (more)

Junker, Jessica

2009-01-01T23:59:59.000Z

379

A multi-population genetic algorithm for a constrained two ...  

E-Print Network (OSTI)

tree search algorithm for solving the d-dimensional knapsack problem. ...... PH A population heuristic, proposed by Beasley (2004), where a population of.

2008-12-10T23:59:59.000Z

380

Texture analysis improves level set segmentation of the anterior abdominal wall  

SciTech Connect

Purpose: The treatment of ventral hernias (VH) has been a challenging problem for medical care. Repair of these hernias is fraught with failure; recurrence rates ranging from 24% to 43% have been reported, even with the use of biocompatible mesh. Currently, computed tomography (CT) is used to guide intervention through expert, but qualitative, clinical judgments, notably, quantitative metrics based on image-processing are not used. The authors propose that image segmentation methods to capture the three-dimensional structure of the abdominal wall and its abnormalities will provide a foundation on which to measure geometric properties of hernias and surrounding tissues and, therefore, to optimize intervention.Methods: In this study with 20 clinically acquired CT scans on postoperative patients, the authors demonstrated a novel approach to geometric classification of the abdominal. The authors approach uses a texture analysis based on Gabor filters to extract feature vectors and follows a fuzzy c-means clustering method to estimate voxelwise probability memberships for eight clusters. The memberships estimated from the texture analysis are helpful to identify anatomical structures with inhomogeneous intensities. The membership was used to guide the level set evolution, as well as to derive an initial start close to the abdominal wall.Results: Segmentation results on abdominal walls were both quantitatively and qualitatively validated with surface errors based on manually labeled ground truth. Using texture, mean surface errors for the outer surface of the abdominal wall were less than 2 mm, with 91% of the outer surface less than 5 mm away from the manual tracings; errors were significantly greater (25 mm) for methods that did not use the texture.Conclusions: The authors approach establishes a baseline for characterizing the abdominal wall for improving VH care. Inherent texture patterns in CT scans are helpful to the tissue classification, and texture analysis can improve the level set segmentation around the abdominal region.

Xu, Zhoubing [Electrical Engineering, Vanderbilt University, Nashville, Tennessee 37235 (United States)] [Electrical Engineering, Vanderbilt University, Nashville, Tennessee 37235 (United States); Allen, Wade M. [Institute of Imaging Science, Vanderbilt University, Nashville, Tennessee 37235 (United States)] [Institute of Imaging Science, Vanderbilt University, Nashville, Tennessee 37235 (United States); Baucom, Rebeccah B.; Poulose, Benjamin K. [General Surgery, Vanderbilt University Medical Center, Nashville, Tennessee 37235 (United States)] [General Surgery, Vanderbilt University Medical Center, Nashville, Tennessee 37235 (United States); Landman, Bennett A. [Electrical Engineering, Vanderbilt University, Nashville, Tennessee 37235 and Institute of Imaging Science, Vanderbilt University, Nashville, Tennessee 37235 (United States)] [Electrical Engineering, Vanderbilt University, Nashville, Tennessee 37235 and Institute of Imaging Science, Vanderbilt University, Nashville, Tennessee 37235 (United States)

2013-12-15T23:59:59.000Z

Note: This page contains sample records for the topic "distinct population segment" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Total Measurement Uncertainty for the Plutonium Finishing Plant (PFP) Segmented Gamma Scan Assay System  

SciTech Connect

This report presents the results of an evaluation of the Total Measurement Uncertainty (TMU) for the Canberra manufactured Segmented Gamma Scanner Assay System (SGSAS) as employed at the Hanford Plutonium Finishing Plant (PFP). In this document, TMU embodies the combined uncertainties due to all of the individual random and systematic sources of measurement uncertainty. It includes uncertainties arising from corrections and factors applied to the analysis of transuranic waste to compensate for inhomogeneities and interferences from the waste matrix and radioactive components. These include uncertainty components for any assumptions contained in the calibration of the system or computation of the data. Uncertainties are propagated at 1 sigma. The final total measurement uncertainty value is reported at the 95% confidence level. The SGSAS is a gamma assay system that is used to assay plutonium and uranium waste. The SGSAS system can be used in a stand-alone mode to perform the NDA characterization of a container, particularly for low to medium density (0-2.5 g/cc) container matrices. The SGSAS system provides a full gamma characterization of the container content. This document is an edited version of the Rocky Flats TMU Report for the Can Scan Segment Gamma Scanners, which are in use for the plutonium residues projects at the Rocky Flats plant. The can scan segmented gamma scanners at Rocky Flats are the same design as the PFP SGSAS system and use the same software (with the exception of the plutonium isotopics software). Therefore, all performance characteristics are expected to be similar. Modifications in this document reflect minor differences in the system configuration, container packaging, calibration technique, etc. These results are supported by the Quality Assurance Objective (QAO) counts, safeguards test data, calibration data, etc. for the PFP SGSAS system. Other parts of the TMU analysis utilize various modeling techniques such as Monte Carlo N-Particle (MCNP) and In Situ Object Counting Software (ISOCS).

WESTSIK, G.A.

2001-06-06T23:59:59.000Z

382

Population balance for CFBFGD systems  

Science Journals Connector (OSTI)

Abstract Population balance is the basis of stable and effective operation of circulating fluidized bed flue gas desulfurization systems (CFBFGD systems). The population balance model parameters were calibrated by comparing the calculated results for a CFBFGD system with experimental data from a bench-scale CFBFGD system. The relative error was less than 5.1%. The influences of the model parameters, reactor structures, operating conditions, and adhesive carrier particles on the population balance of the CFBFGD system were then analyzed using the calibrated population balance model. The results indicated that particle segregation and the superficial gas velocity strongly influenced the particle size distribution. The cyclone separation efficiency and the selected particle draining coefficient also impacted the particle size distribution and the bottom ash ratio. The calcium to sulfur ratio and the bed temperature mainly influenced the bottom ash ratio and the desulfurization efficiency of the system. The anti-abrasion characteristics of the rapidly hydrated sorbent influenced the particle size distribution, the bottom ash ratio, and the desulfurization efficiency of the system. The population balance in the CFBFGD system was more easily achieved when circulating ash from a CFB boiler was used as adhesive carrier particles instead of coal fly ash. This research provides guidance for stable, effective operation of CFBFGD systems to promote industrial applications of CFBFGD technology.

Changfu You; Yuan Li

2013-01-01T23:59:59.000Z

383

Segmented \\{HPGe\\} detectors for the search of neutrinoless double beta-decay  

Science Journals Connector (OSTI)

Neutrinoless double beta-decay (0vbb-decay) is the most promising approach to distinguish between the possibilities of a Dirac or a Majorana nature of neutrinos. Additionally, a measurement of the half-life of 0vbb-decay can give information on the absolute mass scale of neutrinos. At the moment \\{HPGe\\} detectors yield the most sensitive limits on this Lepton-number violating process. The segmentation of \\{HPGe\\} detectors increases the experimental sensitivity by allowing the reconstruction of event topologies. The successful operation of prototype detectors submerged in cryoliquid demonstrates the viability of this experimental approach.

B. Majorovits

2010-01-01T23:59:59.000Z

384

Layered and segmented system organization (LASSO) for highly reliable inventory monitoring systems (IMS)  

SciTech Connect

The Trilateral Initiative is preparing for International Atomic Energy Agency (LUiA) verification of excess fissile material released itom the defense programs of the United States and the Russian Federation. Following acceptance of the material using an Attribute Verification System, the IAEA will depend on an Inventory Monitoring System to maintain Continuity of Knowledge of the large inventory of thousands of items. Recovery fiom a total loss of Continuity of Knowledge in such a large storage facility would involve an extremely costly inventory re-verification This paper presents the framework for a Layered and Segmented System Organization that is the basis for a highly reliable IMS with protection-in-depth.

Mangan, Dennis L.; Matter, John C.; Waddoups, I. (Ivan); Abhold, M. E. (Mark E.); Chiaro, P. (Peter)

2002-01-01T23:59:59.000Z

385

Pulmonary lobe segmentation based on ridge surface sampling and shape model fitting  

SciTech Connect

Purpose: Performing lobe-based quantitative analysis of the lung in computed tomography (CT) scans can assist in efforts to better characterize complex diseases such as chronic obstructive pulmonary disease (COPD). While airways and vessels can help to indicate the location of lobe boundaries, segmentations of these structures are not always available, so methods to define the lobes in the absence of these structures are desirable. Methods: The authors present a fully automatic lung lobe segmentation algorithm that is effective in volumetric inspiratory and expiratory computed tomography (CT) datasets. The authors rely on ridge surface image features indicating fissure locations and a novel approach to modeling shape variation in the surfaces defining the lobe boundaries. The authors employ a particle system that efficiently samples ridge surfaces in the image domain and provides a set of candidate fissure locations based on the Hessian matrix. Following this, lobe boundary shape models generated from principal component analysis (PCA) are fit to the particles data to discriminate between fissure and nonfissure candidates. The resulting set of particle points are used to fit thin plate spline (TPS) interpolating surfaces to form the final boundaries between the lung lobes. Results: The authors tested algorithm performance on 50 inspiratory and 50 expiratory CT scans taken from the COPDGene study. Results indicate that the authors' algorithm performs comparably to pulmonologist-generated lung lobe segmentations and can produce good results in cases with accessory fissures, incomplete fissures, advanced emphysema, and low dose acquisition protocols. Dice scores indicate that only 29 out of 500 (5.85%) lobes showed Dice scores lower than 0.9. Two different approaches for evaluating lobe boundary surface discrepancies were applied and indicate that algorithm boundary identification is most accurate in the vicinity of fissures detectable on CT. Conclusions: The proposed algorithm is effective for lung lobe segmentation in absence of auxiliary structures such as vessels and airways. The most challenging cases are those with mostly incomplete, absent, or near-absent fissures and in cases with poorly revealed fissures due to high image noise. However, the authors observe good performance even in the majority of these cases.

Ross, James C., E-mail: jross@bwh.harvard.edu [Channing Laboratory, Brigham and Women's Hospital, Boston, Massachusetts 02215 (United States); Surgical Planning Lab, Brigham and Women's Hospital, Boston, Massachusetts 02215 (United States); Laboratory of Mathematics in Imaging, Brigham and Women's Hospital, Boston, Massachusetts 02126 (United States); Kindlmann, Gordon L. [Computer Science Department and Computation Institute, University of Chicago, Chicago, Illinois 60637 (United States)] [Computer Science Department and Computation Institute, University of Chicago, Chicago, Illinois 60637 (United States); Okajima, Yuka; Hatabu, Hiroto [Department of Radiology, Brigham and Women's Hospital, Boston, Massachusetts 02215 (United States)] [Department of Radiology, Brigham and Women's Hospital, Boston, Massachusetts 02215 (United States); Daz, Alejandro A. [Pulmonary and Critical Care Division, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02215 and Department of Pulmonary Diseases, Pontificia Universidad Catlica de Chile, Santiago (Chile)] [Pulmonary and Critical Care Division, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02215 and Department of Pulmonary Diseases, Pontificia Universidad Catlica de Chile, Santiago (Chile); Silverman, Edwin K. [Channing Laboratory, Brigham and Women's Hospital, Boston, Massachusetts 02215 and Pulmonary and Critical Care Division, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02215 (United States)] [Channing Laboratory, Brigham and Women's Hospital, Boston, Massachusetts 02215 and Pulmonary and Critical Care Division, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02215 (United States); Washko, George R. [Pulmonary and Critical Care Division, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02215 (United States)] [Pulmonary and Critical Care Division, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02215 (United States); Dy, Jennifer [ECE Department, Northeastern University, Boston, Massachusetts 02115 (United States)] [ECE Department, Northeastern University, Boston, Massachusetts 02115 (United States); Estpar, Ral San Jos [Department of Radiology, Brigham and Women's Hospital, Boston, Massachusetts 02215 (United States) [Department of Radiology, Brigham and Women's Hospital, Boston, Massachusetts 02215 (United States); Surgical Planning Lab, Brigham and Women's Hospital, Boston, Massachusetts 02215 (United States); Laboratory of Mathematics in Imaging, Brigham and Women's Hospital, Boston, Massachusetts 02126 (United States)

2013-12-15T23:59:59.000Z

386

Population inversion in Landau-quantized graphene  

E-Print Network (OSTI)

Landau level lasers have the advantage of tunability of the laser frequency by means of the external magnetic field. The crucial prerequisite of such a laser is a population inversion between optically coupled Landau levels. Efficient carrier-carrier and carrier-phonon scattering generally suppresses this effect in conventional materials. Based on microscopic calculations, we predict for the first time the occurrence of a long-lived population inversion in Landau-quantized graphene and reveal the underlying many-particle mechanisms. To guide the experimental demonstration, we present optimal conditions for the observation of a maximal population inversion in terms of experimentally accessible parameters, such as the strength of the magnetic field, pump fluence, temperature, and doping. We reveal that in addition to the tunability of the Landau-level laser frequency, also the polarization of the emitted light can be tuned via gate voltage controlling the doping of the sample.

Wendler, Florian

2014-01-01T23:59:59.000Z

387

Interplay of relativistic and nonrelativistic transport in atomically precise segmented graphene nanoribbons  

E-Print Network (OSTI)

Graphene's isolation launched explorations of fundamental relativistic physics originating from the planar honeycomb lattice arrangement of the carbon atoms, and of potential technological applications in nanoscale electronics. Bottom-up fabricated atomically-precise segmented graphene nanoribbons, SGNRs, open avenues for studies of electrical transport, coherence, and interference effects in metallic, semiconducting, and mixed GNRs, with different edge terminations. Conceptual and practical understanding of electric transport through SGNRs is gained through nonequilibrium Green's function (NEGF) conductance calculations and a Dirac continuum model that absorbs the valence-to-conductance energy gaps as position-dependent masses, including topological-in-origin mass-barriers at the contacts between segments. The continuum model reproduces the NEGF results, including optical Dirac Fabry-Perot (FP) equidistant oscillations for massless relativistic carriers in metallic armchair SGNRs, and an unequally-spaced FP pattern for mixed armchair-zigzag SGNRs where carriers transit from a relativistic (armchair) to a nonrelativistic (zigzag) regime. This provides a unifying framework for analysis of coherent transport phenomena and interpretation of forthcoming experiments in SGNRs.

Constantine Yannouleas; Igor Romanovsky; Uzi Landman

2015-02-01T23:59:59.000Z

388

Coupled segmentation of nuclear and membrane-bound macromolecules through voting and multiphase level set  

Science Journals Connector (OSTI)

Abstract Membrane-bound macromolecules play an important role in tissue architecture and cellcell communication, and is regulated by almost one-third of the genome. At the optical scale, one group of membrane proteins expresses themselves as linear structures along the cell surface boundaries, while others are sequestered; and this paper targets the former group. Segmentation of these membrane proteins on a cell-by-cell basis enables the quantitative assessment of localization for comparative analysis. However, such membrane proteins typically lack continuity, and their intensity distributions are often very heterogeneous; moreover, nuclei can form large clump, which further impedes the quantification of membrane signals on a cell-by-cell basis. To tackle these problems, we introduce a three-step process to (i) regularize the membrane signal through iterative tangential voting, (ii) constrain the location of surface proteins by nuclear features, where clumps of nuclei are segmented through a delaunay triangulation approach, and (iii) assign membrane-bound macromolecules to individual cells through an application of multi-phase geodesic level-set. We have validated our method using both synthetic data and a dataset of 200 images, and are able to demonstrate the efficacy of our approach with superior performance. Supplementary Information: One online video example can be found with: http://vision.lbl.gov/People/hang/evolving_fronts.gif

Hang Chang; Quan Wen; Bahram Parvin

2015-01-01T23:59:59.000Z

389

Vision 20/20: Perspectives on automated image segmentation for radiotherapy  

SciTech Connect

Due to rapid advances in radiation therapy (RT), especially image guidance and treatment adaptation, a fast and accurate segmentation of medical images is a very important part of the treatment. Manual delineation of target volumes and organs at risk is still the standard routine for most clinics, even though it is time consuming and prone to intra- and interobserver variations. Automated segmentation methods seek to reduce delineation workload and unify the organ boundary definition. In this paper, the authors review the current autosegmentation methods particularly relevant for applications in RT. The authors outline the methods strengths and limitations and propose strategies that could lead to wider acceptance of autosegmentation in routine clinical practice. The authors conclude that currently, autosegmentation technology in RT planning is an efficient tool for the clinicians to provide them with a good starting point for review and adjustment. Modern hardware platforms including GPUs allow most of the autosegmentation tasks to be done in a range of a few minutes. In the nearest future, improvements in CT-based autosegmentation tools will be achieved through standardization of imaging and contouring protocols. In the longer term, the authors expect a wider use of multimodality approaches and better understanding of correlation of imaging with biology and pathology.

Sharp, Gregory, E-mail: gcsharp@partners.org; Fritscher, Karl D.; Shusharina, Nadya [Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts 02114 (United States)] [Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts 02114 (United States); Pekar, Vladimir [Philips Healthcare, Markham, Ontario 6LC 2S3 (Canada)] [Philips Healthcare, Markham, Ontario 6LC 2S3 (Canada); Peroni, Marta [Center for Proton Therapy, Paul Scherrer Institut, 5232 Villigen-PSI (Switzerland)] [Center for Proton Therapy, Paul Scherrer Institut, 5232 Villigen-PSI (Switzerland); Veeraraghavan, Harini [Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, New York 10065 (United States)] [Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, New York 10065 (United States); Yang, Jinzhong [Department of Radiation Physics, MD Anderson Cancer Center, Houston, Texas 77030 (United States)] [Department of Radiation Physics, MD Anderson Cancer Center, Houston, Texas 77030 (United States)

2014-05-15T23:59:59.000Z

390

Patch-based image segmentation of satellite imagery using minimum spanning tree construction  

SciTech Connect

We present a method for hierarchical image segmentation and feature extraction. This method builds upon the combination of the detection of image spectral discontinuities using Canny edge detection and the image Laplacian, followed by the construction of a hierarchy of segmented images of successively reduced levels of details. These images are represented as sets of polygonized pixel patches (polygons) attributed with spectral and structural characteristics. This hierarchy forms the basis for object-oriented image analysis. To build fine level-of-detail representation of the original image, seed partitions (polygons) are built upon a triangular mesh composed of irregular sized triangles, whose spatial arrangement is adapted to the image content. This is achieved by building the triangular mesh on the top of the detected spectral discontinuities that form a network of constraints for the Delaunay triangulation. A polygonized image is represented as a spatial network in the form of a graph with vertices which correspond to the polygonal partitions and graph edges reflecting pairwise partitions relations. Image graph partitioning is based on the iterative graph oontraction using Boruvka's Minimum Spanning Tree algorithm. An important characteristic of the approach is that the agglomeration of partitions is constrained by the detected spectral discontinuities; thus the shapes of agglomerated partitions are more likely to correspond to the outlines of real-world objects.

Skurikhin, Alexei N [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

391

Seismic fragility formulations for segmented buried pipeline systems including the impact of differential ground subsidence  

SciTech Connect

Though Differential Ground Subsidence (DGS) impacts the seismic response of segmented buried pipelines augmenting their vulnerability, fragility formulations to estimate repair rates under such condition are not available in the literature. Physical models to estimate pipeline seismic damage considering other cases of permanent ground subsidence (e.g. faulting, tectonic uplift, liquefaction, and landslides) have been extensively reported, not being the case of DGS. The refinement of the study of two important phenomena in Mexico City - the 1985 Michoacan earthquake scenario and the sinking of the city due to ground subsidence - has contributed to the analysis of the interrelation of pipeline damage, ground motion intensity, and DGS; from the analysis of the 48-inch pipeline network of the Mexico City's Water System, fragility formulations for segmented buried pipeline systems for two DGS levels are proposed. The novel parameter PGV{sup 2}/PGA, being PGV peak ground velocity and PGA peak ground acceleration, has been used as seismic parameter in these formulations, since it has shown better correlation to pipeline damage than PGV alone according to previous studies. By comparing the proposed fragilities, it is concluded that a change in the DGS level (from Low-Medium to High) could increase the pipeline repair rates (number of repairs per kilometer) by factors ranging from 1.3 to 2.0; being the higher the seismic intensity the lower the factor.

Pineda Porras, Omar Andrey [Los Alamos National Laboratory; Ordaz, Mario [UNAM, MEXICO CITY

2009-01-01T23:59:59.000Z

392

Publications on Population Peer-Reviewed Articles  

E-Print Network (OSTI)

- population nexus in the East African Horn: emerging degradation trends in rangeland and pastoral livelihood zones. Global Environmental Change 23 (6), 1525-1541. Davis J., López-Carr D. (2014) Migration) initiatives work? Evidence from WWF-sponsored projects in Africa and Asia.Proceedings of the International

Lopez-Carr, David

393

The Population Status The American Alligator  

E-Print Network (OSTI)

Carolina by Thomas M. Murphy A Publication of the Savannah River Plant National Environmental Research Park'S SAVANNAH RIVER PLANT NATIONAL ENVIRONMENT RESEARCH PARK Copies may be obtained from Savannah River Ecology Laboratory #12;- The Population Status of the American Alligator on the Savannah River Plant, South Carolina

Georgia, University of

394

Populations of Galaxies Building a Galaxy  

E-Print Network (OSTI)

1 Populations of Galaxies · Building a Galaxy · Stellar Luminosity Functions, Mass · Starburst galaxies, Ultraluminous Infrared Galaxies (ULIRGS) #12;2 Question: How would you build a synthetic metals. · Fill in an H-R (or color-magnitude) diagram and let it evolve. · Make a synthetic spectrum

Crenshaw, Michael

395

Population synthesis of wide binary millisecond pulsars  

Science Journals Connector (OSTI)

......from our population synthesis code are in good agreement with those...s1, respectively. In model NS2, the maximum amount of mass...using a rapid binary evolution code based on the analytical approximation...adopted in our binary evolution code. We assume mass transfer to......

B. Willems; U. Kolb

2002-12-11T23:59:59.000Z

396

PROSPECTIVE POPULATION OF THE UNITED STATES  

Science Journals Connector (OSTI)

...States are vast, while the forests are renewable and the farms susceptible of large increase...Saxony (778) and half that of (settled) Egypt (931). The 200, -000,000 for the...Saxony and oinly about one third that of Egypt. The rate of increase in population to...

W J MCGEE

1911-10-06T23:59:59.000Z

397

Subunits of the Heterotrimeric Transcription Factor NF-Y Are Imported into the Nucleus by Distinct Pathways Involving Importin ? and Importin 13  

Science Journals Connector (OSTI)

...suggest that a distinct binding platform derived from the HFM of both...accumulate against gradients of chemical activities (21, 29, 38...receptors to the preformed HMF-dimer was insignificant...suggest that a distinct binding platform derived from the HFM of both...

Joerg Kahle; Matthias Baake; Detlef Doenecke; Werner Albig

2005-07-01T23:59:59.000Z

398

Bull Trout Population and Habitat Surveys in the Middle Fork Willamette and McKenzie Rivers, Annual Report 2002.  

SciTech Connect

Bull trout in the Willamette River Basin were historically distributed throughout major tributaries including the Middle Fork Willamette and McKenzie rivers. Habitat degradation, over-harvest, passage barriers, fish removal by rotenone, and hybridization and competition with non-native brook trout are all likely factors that have led to the decline of bull trout in the Willamette Basin (Ratliff and Howell 1992). The U.S. Fish and Wildlife Service listed the Columbia River bull trout population segment as Threatened under the federal Endangered Species Act in 1998. Four bull trout populations were isolated in the upper Willamette River following the construction of flood control dams on the South Fork McKenzie River, McKenzie River, and Middle Fork Willamette River that created Cougar, Trail Bridge, and Hills Creek reservoirs. Buchanan et al. (1997) described the population in the main stem McKenzie as 'of special concern', the South Fork McKenzie population as 'high risk of extinction', the population above Trail Bridge Reservoir as 'high risk of extinction', and bull trout in the Middle Fork Willamette as 'probably extinct'. Various management efforts such as strict angling regulations and passage improvement projects have been implemented to stabilize and rehabilitate bull trout habitat and populations in the McKenzie River over the past 10 years. Since 1997, bull trout fry from Anderson Creek on the upper McKenzie River have been transferred to the Middle Fork Willamette basin above Hills Creek Reservoir in an attempt to re-establish a reproducing bull trout population. This project was developed in response to concerns over the population status and management of bull trout in the McKenzie and Middle Fork Willamette Rivers by the Oregon Department of Fish and Wildlife during the early 1990s. The project was conducted under measure 9.3G(2) of the Columbia Basin Fish and Wildlife Program to monitor the status, life history, habitat needs, and limiting factors for bull trout within sub basins of the Columbia River. Also, this project provides information to develop native fish recovery plans such as the Oregon Plan for Salmon and Watersheds and the U.S. Fish and Wildlife Bull Trout Recovery Plan.

Seals, Jason; Reis, Kelly

2003-10-01T23:59:59.000Z

399

Apparatus and methods for impingement cooling of an undercut region adjacent a side wall of a turbine nozzle segment  

DOE Patents (OSTI)

A gas turbine nozzle segment has outer and inner bands. Each band includes a side wall, a cover and an impingement plate between the cover and nozzle wall defining two cavities on opposite sides of the impingement plate. Cooling steam is supplied to one cavity for flow through apertures of the impingement plate to cool the nozzle wall. The side wall of the band and inturned flange define with the nozzle wall an undercut region. The inturned flange has a plurality of apertures for directing cooling steam to cool the side wall between adjacent nozzle segments.

Burdgick, Steven Sebastian (Schenectady, NY); Itzel, Gary Michael (Simpsonville, SC)

2001-01-01T23:59:59.000Z

400

EO 12898: Environmental Justice in Minority Populations and Low-Income Populations  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

WASHINGTON WASHINGTON February 11, 1994 MEMORANDUM FOR THE HEADS OF ALL DEPARTMENTS AND AGENCIES SUBJECT: Executive Order on Federal Actions to Address Environmental Justice in Minority Populations and Low- Income Populations Today I have issued an Executive Order on Federal Actions to Address Environmental Justice in Minority Populations and Low-Income Populations. That order is designed to focus Federal attention on the environmental and human health conditions in minority communities and low-income communities with the goal of achieving environmental justice. That order is also intended to promote nondiscrimination in Federal programs substantially affecting human health and the environment, and to provide minority communities and low-income communities access to public

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401

EVSE Features Charge Delay Option Power Light Indicator Eight-segment Progress Indicator Auto-restart  

NLE Websites -- All DOE Office Websites (Extended Search)

Charge Delay Option Power Light Indicator Charge Delay Option Power Light Indicator Eight-segment Progress Indicator Auto-restart EVSE Specifications Grid connection Plug and cord NEMA 6-50 Connector type J1772 Test lab certifications UL Listed Approximate size (H x W x D inches) 10 x 13 x 4 Charge level AC Level 2 Input voltage 240 VAC Maximum input current 30 Amp Circuit breaker rating 40 Amp Test Conditions 1 Test date 10/30/2012 Nominal supply voltage (Vrms) 209.04 Supply frequency (Hz) 59.99 Initial ambient temperature (°F) 64 Test Vehicle 1,3 Make and model 2012 Chevrolet Volt Battery type Li-ion Steady state charge power (AC kW) 3.09 Maximum charge power (AC kW) 3.20 EVSE Test Results 1,2,4

402

The accelerated site technology deployment program presents the segmented gate system  

SciTech Connect

The Department of Energy (DOE) is working to accelerate the acceptance and application of innovative technologies that improve the way the nation manages its environmental remediation problems. The DOE Office of Science and Technology established the Accelerated Site Technology Deployment Program (ASTD) to help accelerate the acceptance and implementation of new and innovative soil and ground water remediation technologies. Coordinated by the Department of Energy's Idaho Office, the ASTD Program reduces many of the classic barriers to the deployment of new technologies by involving government, industry, and regulatory agencies in the assessment, implementation, and validation of innovative technologies. The paper uses the example of the Segmented Gate System (SGS) to illustrate how the ASTD program works. The SGS was used to cost effectively separate clean and contaminated soil for four different radionuclides: plutonium, uranium, thorium, and cesium. Based on those results, it has been proposed to use the SGS at seven other DOE sites across the country.

PATTESON,RAYMOND; MAYNOR,DOUG; CALLAN,CONNIE

2000-02-24T23:59:59.000Z

403

Apparatus for impingement cooling a side wall adjacent an undercut region of a turbine nozzle segment  

DOE Patents (OSTI)

A gas turbine nozzle segment has outer and inner bands and vanes therebetween. Each band includes a side wall, a cover and an impingement plate between the cover and nozzle wall defining two cavities on opposite sides of the impingement plate. Cooling steam is supplied to one cavity for flow through apertures of the impingement plate to cool the nozzle wall. The side wall of the band and inturned flange define with the nozzle wall an undercut region. Slots are formed through the inturned flange along the nozzle side wall. A plate having through-apertures extending between opposite edges thereof is disposed in each slot, the slots and plates being angled such that the cooling medium exiting the apertures in the second cavity lie close to the side wall for focusing and targeting cooling medium onto the side wall.

Burdgick, Steven Sebastian (Schenectady, NY)

2002-01-01T23:59:59.000Z

404

Method of controlling the side wall thickness of a turbine nozzle segment for improved cooling  

DOE Patents (OSTI)

A gas turbine nozzle segment has outer and inner bands and a vane extending therebetween. Each band has a side wall, a cover and an impingement plate between the cover and nozzle wall defining two cavities on opposite sides of the impingement plate. Cooling steam is supplied to one cavity for flow through apertures of the impingement plate to cool the nozzle wall. The side wall of the band has an inturned flange defining with the nozzle wall an undercut region. The outer surface of the side wall is provided with a step prior to welding the cover to the side wall. A thermal barrier coating is applied in the step and, after the cover is welded to the side wall, the side wall is finally machined to a controlled thickness removing all, some or none of the coating.

Burdgick, Steven Sebastian (Schenectady, NY)

2002-01-01T23:59:59.000Z

405

A region segmentation based algorithm for building crystal position lookup table in scintillation detector  

E-Print Network (OSTI)

In scintillation detector, scintillation crystals are typically made into 2-dimension modular array. The location of incident gamma-ray need be calibrated due to spatial response nonlinearity. Generally, position histograms, the characteristic flood response of scintillation detectors, are used for position calibration. In this paper, a position calibration method based on crystal position lookup table which maps the inaccurate location calculated by Anger logic to the exact hitting crystal position has been proposed, Firstly, position histogram is segmented into disconnected regions. Then crystal marking points are labeled by finding the centroids of regions. Finally, crystal boundaries are determined and crystal position lookup table is generated. The scheme is evaluated by the whole-body PET scanner and breast dedicated SPECT detector developed by Institute of High Energy Physics, Chinese Academy of Sciences. The results demonstrate that the algorithm is accurate, efficient, robust and general purpose.

Wang, Hai Peng; Liu, Shuang Quan; Fan, Xin; Cao, Xue Xiang; Chai, Pei; Shan, Bao Ci

2014-01-01T23:59:59.000Z

406

Pulse shapes from electron and photon induced events in segmented high-purity germanium detectors  

E-Print Network (OSTI)

Experiments built to search for neutrinoless double beta-decay are limited in their sensitivity not only by the exposure but also by the amount of background encountered. Radioactive isotopes in the surrounding of the detectors which emit gamma-radiation are expected to be a significant source of background in the GERmanium Detector Array, GERDA. Methods to select electron induced events and discriminate against photon induced events inside a germanium detector are presented in this paper. The methods are based on the analysis of the time structure of the detector response. Data were taken with a segmented GERDA prototype detector. It is shown that the analysis of the time response of the detector can be used to distinguish multiply scattered photons from electrons.

I. Abt; A. Caldwell; K. Krninger; J. Liu; X. Liu; B. Majorovits

2007-04-23T23:59:59.000Z

407

Automatic cell segmentation in strongly agglomerated cell networks for different cell types  

Science Journals Connector (OSTI)

This paper presents a method of separating cells that are connected to each other forming clusters. The difference to many other publications covering similar topics is that the cell types we are dealing with form clusters of highly varying morphology. An advantage of our method is that it can be universally used for different cell types. The segmentation method is based on a growth simulation starting from the nuclei areas. To start the evaluation, the cells need to be made visible with a histological stain, in our case with the May-Grnwald solution. After the staining process has been completed, the nuclei areas can be distinguished from the other cell areas by a histogram backprojection algorithm. The presented method can, in addition to histological stained cells, also be applied to fluorescent-stained cells.

S. Buhl; B. Neumann; S.C. Schäfer; A.L. Severing

2014-01-01T23:59:59.000Z

408

Nonperturbative Coherent Population Trapping: An Analytic Model  

Science Journals Connector (OSTI)

Coherent population trapping is shown to occur in a driven symmetric double-well potential in the strong-field regime. The system parameters have been chosen to reproduce the 0-?3+ transition of the inversion mode of the ammonia molecule. For a molecule initially prepared in its lower doublet we find that, under certain circumstances, the 3+ level remains unpopulated, and this occurs in spite of the fact that the laser field is resonant with the 0-?3+ transition and intense enough so as to strongly mix the 0+ and 0- ground states. This counterintuitive result constitutes a coherent population trapping phenomenon of nonperturbative origin which cannot be accounted for with the usual models.

V. Delgado and J. M. Gomez Llorente

2002-01-23T23:59:59.000Z

409

Population dynamics of the Concho water snake  

E-Print Network (OSTI)

the upper Colorado and Concho river systems of central Texas. It is 1 of 2 subspecies, the other being the Brazos water snake (Nerodia harteri harteri) which occurs in the Brazos river system of north-central Texas, Together they comprise the only species..., reproductive potential, mortality, and movements. williams predicted that habitat degradation resulting from the creation of Spence Reservoir, 2 km above his study site, would be detrimental to the Concho water snake population. Since the impoundment...

Mueller, James Michael

1990-01-01T23:59:59.000Z

410

Vehicle Technologies Office: Fact #661: February 7, 2011 Population Density  

NLE Websites -- All DOE Office Websites (Extended Search)

1: February 7, 1: February 7, 2011 Population Density to someone by E-mail Share Vehicle Technologies Office: Fact #661: February 7, 2011 Population Density on Facebook Tweet about Vehicle Technologies Office: Fact #661: February 7, 2011 Population Density on Twitter Bookmark Vehicle Technologies Office: Fact #661: February 7, 2011 Population Density on Google Bookmark Vehicle Technologies Office: Fact #661: February 7, 2011 Population Density on Delicious Rank Vehicle Technologies Office: Fact #661: February 7, 2011 Population Density on Digg Find More places to share Vehicle Technologies Office: Fact #661: February 7, 2011 Population Density on AddThis.com... Fact #661: February 7, 2011 Population Density The density of the population in the U.S., measured as the number of people

411

40th Joint Propulsion Conference, Fort Lauderdale, FL, July 11-14, 2004 Effect of Segmented Anodes On the Beam Profile of a  

E-Print Network (OSTI)

40th Joint Propulsion Conference, Fort Lauderdale, FL, July 11-14, 2004 Effect of Segmented Anodes was investigated. A BPT-2000 magnetic circuit was retrofitted with a segmented anode with thermal measurement capabilities. Current was shared between shims and main anode by changing the voltage on the shim. A Faraday

King, Lyon B.

412

Morphology and segmentation of the western Galapagos Spreading Center, 90.598W: Plume-ridge interaction at  

E-Print Network (OSTI)

-ridge interaction at an intermediate spreading ridge John Sinton Department of Geology and Geophysics, University of Hawai`i, Honolulu, Hawai`i 96822, USA (sinton@hawaii.edu) Robert Detrick and J. Pablo Canales Department. Sinton, J., R. Detrick, J. P. Canales, G. Ito, and M. Behn, Morphology and segmentation of the western

Ito, Garrett

413

Mixing of magmas from enriched and depleted mantle sources in the northeast Pacific: West Valley segment, Juan de Fuca Ridge  

Science Journals Connector (OSTI)

The 50 km-long West Valley segment of the northern Juan de Fuca ... . A suite of basalts dredged from the West Valley floor, the adjacent Heck Seamount chain,...cn?0.3, 87Sr/86Sr=0.702350.70242, and 206Pb/204Pb=...

Brian L. Cousens; James F. Allan

1995-07-01T23:59:59.000Z

414

Pull-Push Level Sets: A new term to encode prior knowledge for the segmentation of teeth images  

E-Print Network (OSTI)

segmentation from 2D images of dental plaster cast models is a difficult problem because it is necessary is a desirable goal.2 In principle, this could be done by studing a 2-D image of a dental plaster cast model of a plaster cast of a dental arch. dealing with merging of different contours into a single one (which

415

Abstract--The problem addressed in this paper is the automatic segmentation of stroke lesions on MR multi-  

E-Print Network (OSTI)

Abstract-- The problem addressed in this paper is the automatic segmentation of stroke lesions to help clinicians in the determination of stroke subtypes and potential functional deficit. I world [9] [20]. Stroke consumes an important part of the total healthcare costs (i.e. excluding social

Paris-Sud XI, Université de

416

3D BLOB BASED BRAIN TUMOR DETECTION AND SEGMENTATION IN MR IMAGES Chen-Ping Yu1  

E-Print Network (OSTI)

3D BLOB BASED BRAIN TUMOR DETECTION AND SEGMENTATION IN MR IMAGES Chen-Ping Yu1 , Guilherme Ruppert to 28,079 mm3 in volume. Us- ing 20 clinical 3D MR scans containing from 1 to 15 tumors per scan: (1) an automated brain tumor detection algorithm for clinical 3D MR images; (2) a novel unsupervised

417

Histogram-based gravitational optimization algorithm on single MR modality for automatic brain lesion detection and segmentation  

Science Journals Connector (OSTI)

Abstract Magnetic resonance imaging (MRI) is a very effective medical imaging technique for the clinical diagnosis and monitoring of neurological disorders. Because of intensity similarities between brain lesions and normal tissues, multispectral MRI modalities are usually applied for brain lesion detection. However, the time and cost restrictions for collecting multi-spectral MRI, and the issue of possible errors from registering multiple MR images necessitate developing an automatic lesion detection approach that can detect lesions using a single anatomical MRI modality. In this paper, an automatic algorithm for brain stroke and tumor lesion detection and segmentation using single-spectral MRI is presented. The proposed algorithm, called histogram-based gravitational optimization algorithm (HGOA), is a novel intensity-based segmentation technique, which applies enhanced gravitational optimization algorithm on histogram analysis results. The mathematical descriptions as well as the convergence criteria of the developed optimization algorithm are presented in detail. Using this algorithm, brain is segmented into different number of regions, which will be labeled as lesion or healthy. Here, the ischemic stroke lesions and tumor lesions are segmented with 91.5% and 88.1% accuracy, respectively.

Nooshin Nabizadeh; Nigel John; Clinton Wright

2014-01-01T23:59:59.000Z

418

The Privacy Market The privacy market has three considerable segments. There is the market of customers who seek  

E-Print Network (OSTI)

of customers who seek privacy in all transactions. There is the market for merchants who wish to distinguishThe Privacy Market The privacy market has three considerable segments. There is the market themselves with respect to privacy practice. There is the market for merchants seeking to avoid the risks

Camp, L. Jean

419

Spatial and temporal constancy of seismic strain release along an evolving segment of the PacificNorth America plate boundary  

E-Print Network (OSTI)

Spatial and temporal constancy of seismic strain release along an evolving segment of the Pacific distribution faults Three new slip rates from the Death Valley­Fish Lake Valley (DVFLV) fault contribute uncertainty, suggesting temporal constancy of seismic strain release along the northern DVFLV fault zone over

Frankel, Kurt L.

420

ELSEVIER Earth and Planetary Science Letters I56 (1998) 239-252 Gravity anomalies and segmentation of the continental margin  

E-Print Network (OSTI)

in extensional regions. Like many margins, the edge effect `high' offshore Gabon. West Africa is located at the shelf break in the region of maximum sediment thickness. Gabon differs, however, from other margins along-strike of the Gabon margin and that passive margins may be highly segmented as regards their long

Watts, A. B. "Tony"

Note: This page contains sample records for the topic "distinct population segment" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Late quaternary geomorphology and geoarchaeology of a segment of the Central Mimbres River Valley, Grant County, New Mexico  

E-Print Network (OSTI)

Two terraces, a modem floodplain, and alluvial fans were identified along a segment of the central Mimbres River Valley in Grant County, New Mexico. The oldest terrace, T2, is composed of one major depositional unit (1) and is capped by a...

Fitch, Michael Anthony

2012-06-07T23:59:59.000Z

422

Nucleotide sequence of influenza virus RNA segment 8 indicates that coding regions for NS1 and NS2 proteins overlap  

Science Journals Connector (OSTI)

...recently been shown to code for two unrelated...proteins (NS1 and NS2) translated from...recently been shown to code for two unrelated...proteins (NS1 and NS2) translated from...the other segments, codes for two poly- peptides (NS1 and NS2). Although it was...

A G Porter; J C Smith; J S Emtage

1980-01-01T23:59:59.000Z

423

AIAA paper-99-2572, Los Angeles, CA, 1999. Design and Operation of Hall Thruster with Segmented Electrodes1  

E-Print Network (OSTI)

Electrodes1 N. J. Fisch, Y. Raitses, A. A. Litvak, and L. A. Dorf Princeton Plasma Physics Laboratory prototypes were built and deployed in the Princeton Plasma Physics Laboratory (PPPL). This paper describes, Princeton University, Princeton NJ 08540 Abstract Principles of the Hall thruster with segmented electrodes

424

Individual-based model of yellow perch and walleye populations in Oneida Lake  

SciTech Connect

Predator-prey dynamics and density dependence are fundamental issues in ecology. The authors use a detailed, individual-based model of walleye and yellow perch to investigate the effects of alternative prey and compensatory responses on predator and prey population dynamics. The analyses focus on the numerical and developmental responses of the predator, rather than the traditional emphasis on functional responses. The extensive database for Oneida Lake, New York, USA was used to configure the model and ensure its realism. The model follows the daily growth, mortality, and spawning of individuals of each species through their lifetime. Three ecologically distinct periods in the history of Oneida Lake were simulated: baseline, high mayfly densities, and high forage fish densities. Mayflies and forage fish act as alternative prey for walleye. For model corroboration, the three periods were simulated sequentially as they occurred in Oneida Lake. Model predictions of abundances, size at age, and growth and survival rates compared favorably with Oneida Lake data. Three hypotheses suggested by the data were evaluated: alternative prey stabilizes yellow perch and walleye populations; alternative prey increases yellow perch and walleye recruitment; and density-dependent growth and survival compensate for changes in young-of-the-year mortality. Model simulations were performed under increased mayfly densities, increased forage fish densities, and increased egg mortality rates.

Rose, K.A. [Oak Ridge National Lab., TN (United States). Environmental Sciences Div.; Rutherford, E.S. [Univ. of Michigan, Ann Arbor, MI (United States). Inst. for Fisheries Research; McDermot, D.S. [Univ. of Tennessee, Knoxville, TN (United States). Dept. of Ecology and Evolutionary Biology; Forney, J.L.; Mills, E.L. [Cornell Univ. Biological Station, Bridgeport, NY (United States)

1999-05-01T23:59:59.000Z

425

The rise and fall of the Aldabran giant tortoise population  

Science Journals Connector (OSTI)

...to natural population regulatory mechanisms, exacerbated...to natural population regulatory mechanisms, exacerbated...the mid-1960s, when plans for development of Aldabra...following a strategic review of Britain's defence...the pound sterling, plans for military development...

1999-01-01T23:59:59.000Z

426

Population genetics, phylogeography, and morphology of Notropis stramineus  

E-Print Network (OSTI)

distinct pattern of geographical variation which has compelled authors to recognize two subspecies within this species. In this study, I investigated both the genetic and morphological diversity of N. stramineus. First, I used microsatellite markers...

Pittman, Kendra J.

2011-12-31T23:59:59.000Z

427

On the properties of massive Population III stars and metal-free stellar populations  

E-Print Network (OSTI)

We present realistic models for massive Population III stars and stellar populations based on non-LTE model atmospheres, recent stellar evolution tracks and up-to-date evolutionary synthesis models, to study their spectral properties, including their dependence on age, star formation history, and IMF. (..) The main results regarding integrated stellar populations are: * For young bursts and the case of a constant SFR, nebular continuous emission - neglected in previous studies - dominates the spectrum redward of Lyman-alpha (...). Therefore predicted emission line equivalent widths are considerably smaller than found in earlier studies, whereas the detection of the continuum is eased. Nebular line and continuous emission strongly affect the broad band photometric properties of Pop III objects. * Due to stellar evolution, the hardness of the ionising spectrum decreases rapidly, leading to the disappearance of the characteristic HeII 1640 recombination lines after ~ 3 Myr in instantaneous bursts. * The relative...

Schrer, D

2001-01-01T23:59:59.000Z

428

How Ebola Impacts Genetics of Western Lowland Gorilla Populations  

E-Print Network (OSTI)

How Ebola Impacts Genetics of Western Lowland Gorilla Populations Pascaline J. Le Gouar1 for the genetic diversity of populations, which could enhance the species' extinction probability. The Ebola population. Although mortality rates are very high, the impacts of Ebola on genetic diversity of Western

Paris-Sud XI, Université de

429

Revisiting the Uniqueness of Simple Demographics in the US Population  

E-Print Network (OSTI)

Revisiting the Uniqueness of Simple Demographics in the US Population Philippe Golle Palo Alto% of the US population can be uniquely identified by gen- der, ZIP code and full date of birth. This short paper revisits the uniqueness of simple demographics in the US population based on the most recent

Golle, Philippe

430

Genetic Variability and Population Differentiation in Captive Baird's Tapirs  

E-Print Network (OSTI)

one of housing and displaying as diverse a collection of species as possible, to one of creating self and Ballou, 1986; Soule et al., 1986]. One obstacle to achieving a self-sustaining captive population- sustaining captive populations that may one day act as a source for restocking wild populations [Ralls

Ashley, Mary V.

431

Population stability, cooperation, and the invasibility of the human species  

E-Print Network (OSTI)

a mechanism for these outcomes by modifying a simple density-dependent population model to allow varying populations expanded out of Africa and spread rapidly across the majority of the earth's land surfacePopulation stability, cooperation, and the invasibility of the human species Marcus J. Hamiltona

Brown, James H.

432

Ecological factors and human threats both drive wildfowl population declines  

E-Print Network (OSTI)

; human population density. Correspondence Peter R. Long, Department of Biology and Biochemistry, Africa and Asia. Second, we use phylogenetic comparative analyses to test whether population size, globalEcological factors and human threats both drive wildfowl population declines P. R. Long1 , T. Sz

433

Genotype-Specific Abnormalities in Mitochondrial Function Associate with Distinct Profiles of Energy Metabolism and Catecholamine Content in Pheochromocytoma and Paraganglioma  

Science Journals Connector (OSTI)

...Distinct Profiles of Energy Metabolism and Catecholamine Content in Pheochromocytoma...differences in high-energy phosphate content between the tumors...content of PGLs and energy metabolism. Catecholamine contents are particularly low...

Jyotsna U. Rao; Udo F.H. Engelke; Richard J.T. Rodenburg; Ron A. Wevers; Karel Pacak; Graeme Eisenhofer; Nan Qin; Benno Kusters; Angelina G. Goudswaard; Jacques W.M. Lenders; Ad R.M.M. Hermus; Arjen R. Mensenkamp; Henricus P.M. Kunst; Fred C.G.J. Sweep; and Henri J.L.M. Timmers

2013-07-15T23:59:59.000Z

434

Effects of tone on the three-way laryngeal distinction in Korean: An acoustic and aerodynamic comparison of the Seoul and South Kyungsang dialects  

E-Print Network (OSTI)

KU ScholarWorks | http://kuscholarworks.ku.edu Effects of tone on the three-way laryngeal distinction in Korean: An acoustic and aerodynamic comparison of the Seoul and South Kyungsang dialects by Hyunjung Lee and Allard Jongman KU Scholar... below. Lee, H., and Jongman, A. (2012). Effects of tone on the three-way laryngeal distinction in Korean: An acoustic and aerodynamic comparison of the Seoul and South Kyungsang dialects. Journal of the International Phonetic Association 42, 145...

Lee, Hyunjung; Jongman, Allard

2012-08-01T23:59:59.000Z

435

Design and development of a silicon-segmented detector for 2D dose measurements in radiotherapy  

Science Journals Connector (OSTI)

Modern radiotherapy treatment techniques, such as intensity Modulated Radiation Therapy (IMRT) and protontherapy, require detectors with specific features, usually not available in conventional dosimeters. IMRT dose measurements, for instance, must face non-uniform beam fluences as well as a time-varying dose rate. Two-dimensional detectors present a great interest for dosimetry in beams with steep dose gradients, but they must satisfy a number of requirements and, in particular, they must exhibit high spatial resolution. With the aim of developing a dosimetric system adequate for 2D pre-treatment dose verifications, we designed a modular dosimetric device based on a monolithic silicon-segmented module. State and results of this work in progress are described in this article. The first 441 pixels, 6.296.29cm2 silicon module has been produced by ion implantation on a 50?m thick p-type epitaxial layer. This sensor has been connected to a discrete readout electronics performing current integration, and has been tested with satisfactory results. In the final configuration, nine silicon modules will be assembled together to cover an area close to 2020cm2 with 3969 channels. In this case, the readout electronics will be based on an ASIC capable to read 64 channels by performing current-to-frequency conversion.

David Menichelli; Mara Bruzzi; Marta Bucciolini; Cinzia Talamonti; Marta Casati; Livia Marrazzo; Mauro Tesi; Claudio Piemonte; Alberto Pozza; Nicola Zorzi; Mirko Brianzi; Antonio De Sio

2007-01-01T23:59:59.000Z

436

Impact of Resolution on Simulation of Closed Mesoscale Cellular Convection Identified by Dynamically Guided Watershed Segmentation  

SciTech Connect

Organized mesoscale cellular convection (MCC) is a common feature of marine stratocumulus that forms in response to a balance between mesoscale dynamics and smaller scale processes such as cloud radiative cooling and microphysics. We use the Weather Research and Forecasting model with chemistry (WRF-Chem) and fully coupled cloud-aerosol interactions to simulate marine low clouds during the VOCALS-REx campaign over the southeast Pacific. A suite of experiments with 3- and 9-km grid spacing indicates resolution-dependent behavior. The simulations with finer grid spacing have smaller liquid water paths and cloud fractions, while cloud tops are higher. The observed diurnal cycle is reasonably well simulated. To isolate organized MCC characteristics we develop a new automated method, which uses a variation of the watershed segmentation technique that combines the detection of cloud boundaries with a test for coincident vertical velocity characteristics. This ensures that the detected cloud fields are dynamically consistent for closed MCC, the most common MCC type over the VOCALS-REx region. We demonstrate that the 3-km simulation is able to reproduce the scaling between horizontal cell size and boundary layer height seen in satellite observations. However, the 9-km simulation is unable to resolve smaller circulations corresponding to shallower boundary layers, instead producing invariant MCC horizontal scale for all simulated boundary layers depths. The results imply that climate models with grid spacing of roughly 3 km or smaller may be needed to properly simulate the MCC structure in the marine stratocumulus regions.

Martini, Matus; Gustafson, William I.; Yang, Qing; Xiao, Heng

2014-11-27T23:59:59.000Z

437

A Scalable Video Search Engine Based on Audio Content Indexing and Topic Segmentation  

E-Print Network (OSTI)

One important class of online videos is that of news broadcasts. Most news organisations provide near-immediate access to topical news broadcasts over the Internet, through RSS streams or podcasts. Until lately, technology has not made it possible for a user to automatically go to the smaller parts, within a longer broadcast, that might interest them. Recent advances in both speech recognition systems and natural language processing have led to a number of robust tools that allow us to provide users with quicker, more focussed access to relevant segments of one or more news broadcast videos. Here we present our new interface for browsing or searching news broadcasts (video/audio) that exploits these new language processing tools to (i) provide immediate access to topical passages within news broadcasts, (ii) browse news broadcasts by events as well as by people, places and organisations, (iii) perform cross lingual search of news broadcasts, (iv) search for news through a map interface, (v) browse news by tre...

Lawto, Julien; Lamel, Lori; Grefenstete, Gregory; Gravier, Guillaume; Despres, Julien; Guinaudeau, Camille; Sbillot, Pascale

2011-01-01T23:59:59.000Z

438

450 mm dual frequency capacitively coupled plasma sources: Conventional, graded, and segmented electrodes  

SciTech Connect

Wafer diameters for microelectronics fabrication will soon transition from 300 to 450 mm at a time when excitation frequencies for capacitively coupled plasmas (CCPs) are increasing to 200 MHz or higher. Already for 300 mm tools, there is evidence that wave behavior (i.e., propagation, constructive, and destructive interference) affects the uniformity of processing. The increase in diameter to 450 mm is likely to exacerbate these effects, perhaps requiring nontraditional tool designs. This is particularly important in dual frequency (DF) CCP tools in which there are potential interactions between frequencies. In this paper, results from a two-dimensional computational investigation of Ar plasma properties in a 450 mm DF-CCP reactor, incorporating a full-wave solution of Maxwell's equations, are discussed. As in 300 mm DF-CCP reactors, the electron density collapses toward the center of the reactor with increasing high frequency (HF), however, with more pronounced finite wavelength effects. Graded conductivity electrodes with multilayer of dielectrics are computationally demonstrated as a possible means to suppress wave effects thereby increasing plasma uniformity. Segmentation of the HF electrode also improves the plasma uniformity by making the electrical distance between the feeds and the sheath edges as uniform as possible.

Yang Yang [Department of Electrical and Computer Engineering, Iowa State University, Ames, Iowa 50011 (United States); Kushner, Mark J. [Department of Electrical Engineering and Computer Science, University of Michigan, 1301 Beal Avenue, Ann Arbor, Michigan 48109-2122 (United States)

2010-12-01T23:59:59.000Z

439

{open_quotes}A behavioral-based segmentation methodology the next step beyond classify{close_quotes} update...update...update  

SciTech Connect

Entergy Services, Inc., along with SDR, Inc., developed a market segmentation model for Entergy`s residential end-use customer database. This model is driven by a blending of behavioral and attitudinal variables taken from Entergy`s Marketing Information System (MKIS), Donnelley data and Entergy CLASSIFY{trademark} response data. After considerable effort, seven segments were identified which exhibit behavioral and attitudinal differentiation. The reliability of predicting segment membership is approximately 88% overall and 75% for the lowest group. This is compared to the project prediction criteria set at 75%/70% (i.e., correctly predict 75% of the holdout sample with no one group under 70% correct prediction). The purpose of this segmentation strategy is to market tailored offerings to specific segments, thereby improving customer satisfaction while reducing marketing costs. In the fourth and final phase of the project, the segmentation model will be tested by using actual sales data and by collecting new customer preference data. Once this phase is completed, residential program offerings can be developed or modified to best suit the targeted segment.

Lewis, J.; Riggins, J. [Entergy Services, Inc., Little Rock, AR (United States); Neal, W.D. [Sophisticated Data Research, Inc., Atlanta, GA (United States)

1994-11-01T23:59:59.000Z

440

YONSEI EVOLUTIONARY POPULATION SYNTHESIS (YEPS) MODEL. I. SPECTROSCOPIC EVOLUTION OF SIMPLE STELLAR POPULATIONS  

SciTech Connect

We present a series of papers on the 2012 version of the Yonsei Evolutionary Population Synthesis (YEPS) model, which was constructed based on over 20 years of research. This first paper delineates the spectroscopic aspect of integrated light from stellar populations older than 1 Gyr. The standard YEPS is based on the most up-to-date Yonsei-Yale stellar evolutionary tracks and BaSel 3.1 flux libraries, and provides absorption line indices of the Lick/IDS system and high-order Balmer lines for simple stellar populations as functions of stellar parameters, such as metallicity, age, and {alpha}-element mixture. Special care has been taken to incorporate a systematic contribution from horizontal-branch (HB) stars, which alters the temperature-sensitive Balmer lines significantly, resulting in up to a 5 Gyr difference in the age estimation of old, metal-poor stellar populations. We also find that HBs exert an appreciable effect not only on the Balmer lines but also on the metallicity-sensitive lines, including the magnesium index. This is critical in explaining the intriguing bimodality found in index distributions of globular clusters in massive galaxies and to accurately derive spectroscopic metallicities from various indices. A full set of the spectroscopic and photometric YEPS model data of the entire parameter space is currently downloadable at http://web.yonsei.ac.kr/cosmic/data/YEPS.htm.

Chung, Chul; Yoon, Suk-Jin; Lee, Sang-Yoon; Lee, Young-Wook, E-mail: ywlee2@yonsei.ac.kr [Department of Astronomy and Center for Galaxy Evolution Research, Yonsei University, Seoul 120-749 (Korea, Republic of)

2013-01-15T23:59:59.000Z

Note: This page contains sample records for the topic "distinct population segment" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

A Distinctly European Meeting  

Science Journals Connector (OSTI)

Its been called the AAAS meeting of Europe, in reference to the annual meeting of the American Association for the Advancement of Science. And although thats true in a sense, the biennial Euroscience Open Forum (ESOF)in its short, eight-year history...

WILLIAM G. SCHULZ

2012-08-27T23:59:59.000Z

442

On the properties of massive Population III stars and metal-free stellar populations  

E-Print Network (OSTI)

We present realistic models for massive Population III stars and stellar populations based on non-LTE model atmospheres, recent stellar evolution tracks and up-to-date evolutionary synthesis models, to study their spectral properties, including their dependence on age, star formation history, and IMF. (..) The main results regarding integrated stellar populations are: * For young bursts and the case of a constant SFR, nebular continuous emission - neglected in previous studies - dominates the spectrum redward of Lyman-alpha (...). Therefore predicted emission line equivalent widths are considerably smaller than found in earlier studies, whereas the detection of the continuum is eased. Nebular line and continuous emission strongly affect the broad band photometric properties of Pop III objects. * Due to stellar evolution, the hardness of the ionising spectrum decreases rapidly, leading to the disappearance of the characteristic HeII 1640 recombination lines after ~ 3 Myr in instantaneous bursts. * The relative efficiency of ionising photon energy to heavy element rest mass production, eta, of metal-poor and metal-free populations is increased by factors of ~ 4 to 18 with respect to solar metallicity and for ``standard'' IMFs. * The lowest values of eta ~ 1.6 - 2.2 % are obtained for IMFs exclusively populated with high mass stars (M_low >~ 50 Msun). If correct, the yields dominated by pair creation SNae then predict large overabundances of O/C and Si/C compared to solar abundance ratios. Detailed results are given in tabular form and as fit formulae for implementation in other calculations. (abridged abstract)

Daniel Schaerer

2001-10-31T23:59:59.000Z

443

Device for the reduction of population dose  

SciTech Connect

Conventional dental radiographic procedures do not permit direct visualization of the radiation field or the central ray. As a result, it is necessary to use a beam diameter larger than the film in order to prevent an unnecessarily high number of cone cuts or other errors during visual alignment of the cone and film. The modification of a conventional dental x-ray cone which permits the central ray to be depicted by a beam of light is described. The use of the device significantly reduced the number of cone cuts, even when small beam diameters were used. Visualization of the central ray improved radiographic accuracy and has the potential to significantly reduce the over-all dose to the population by reducing the size of the field used for dental radiography.

Kihara, T.; Uchinoumi, K.; Akagi, F.; Antoku, S.

1982-06-01T23:59:59.000Z

444

Potential of the tractor-trailer and container segments as entry markets for a proposed refrigeration technology  

SciTech Connect

The refrigerated trailer and container segments of the transportation industry are evaluated as potential entry markets for a proposed absorption refrigeration technology. To perform this analysis the existing transportation refrigeration industry is characterized; this includes a description of the current refrigeration technology, rating systems, equipment manufacturers, maintenance requirements, and sales trends. This information indicates that the current transportation refrigeration industry is composed of two major competitors, Thermo King and Carrier. In addition, it has low profit potential, some barriers to entry and low growth potential. Data are also presented that characterize the transportation refrigeration consumers, specifically, major groups, market segmentation, consumer decision process, and buying criteria. This consumer information indicates that the majority of refrigerated trailer consumers are private carriers, and that the majority of refrigerated container consumers are shipping companies. Also, these consumers are primarily interested in buying reliable equipment at a low price, and are quite satisfied with existing refrigeration equipment.

Smith, S.A.; Davis, L.J.; Garrett, B.A.

1987-05-01T23:59:59.000Z

445

Coupling of Disilane and Trisilane Segments Through Zero, One, Two, and Three Disilanyl Bridges in Cyclic and Bicyclic Saturated Carbosilanes  

Science Journals Connector (OSTI)

Coupling of Disilane and Trisilane Segments Through Zero, One, Two, and Three Disilanyl Bridges in Cyclic and Bicyclic Saturated Carbosilanes ... The first compound, 2b, with one ?CH2CH2 bridge and two disilane bridges, was prepared by the mixing of 1a with 2 equiv of potassium tert-butoxide and 18-crown-6 in toluene to afford the corresponding 1,4-dipotassium compound. ... With regard to computed electronic transitions, it can first be noted that the all-carbon-bridged compound 2d, which was not studied experimentally, displays its first visible absorption at 209.7 nm (47?690 cm1) and its first dark state at 211.8 nm (47?210 cm1), suggesting a very weak interaction between the two isolated exocyclic disilane segments. ...

Andreas Wallner; Rikard Emanuelsson; Judith Baumgartner; Christoph Marschner; Henrik Ottosson

2013-01-15T23:59:59.000Z

446

Computerized operating procedures for shearing and dissolution of segments from LWBR (Light Water Breeder Reactor) fuel rods  

SciTech Connect

This report presents two detailed computerized operating procedures developed to assist and control the shearing and dissolution of irradiated fuel rods. The procedures were employed in the destructive analysis of end-of-life fuel rods from the Light Water Breeder Reactor (LWBR) that was designed by the Westinghouse Electric Corporation Bettis Atomic Power Laboratory. Seventeen entire fuel rods from the end-of-life core of the LWBR were sheared into 169 precisely characterized segments, and more than 150 of these segments were dissolved during execution of the LWBR Proof-of-Breeding (LWBR-POB) Analytical Support Project at Argonne National Laboratory. The procedures illustrate our approaches to process monitoring, data reduction, and quality assurance during the LWBR-POB work.

Osudar, J.; Deeken, P.G.; Graczyk, D.G.; Fagan, J.E.; Martino, F.J.; Parks, J.E.; Levitz, N.M.; Kessie, R.W.; Leddin, J.M.

1987-05-01T23:59:59.000Z

447

ELECTROCHEMICAL CORROSION STUDIES FOR TANK 241-AN-107 CORE 309 SEGMENTS 21R1 & 21R2  

SciTech Connect

Liquid waste in tank 241-AN-107 is below Technical Safety Requirements Administrative Control 5.16 (AC 5.16) limits. Electrochemical corrosion testing was performed on Core 309, Segments 21R1 and 21R2, to provide information on the conductivity and corrosive tendencies of the tank saltcake and interstitial liquid. This report describes data obtained under the execution of RPP-PLAN-29001, 'Electrochemical Corrosion Studies for Tank 241-AN-107 Core 309, Segments 21R1 and 21R2'. Analytical results are presented that show supernatant was within the limits while the interstitial liquid remained below the limits for the analytical cores. Applicable AC 5.16 chemistry control limits for AN-107 are presented.

DUNCAN JB

2007-11-13T23:59:59.000Z

448

Inter-slice bidirectional registration-based segmentation of the prostate gland in MR and CT image sequences  

SciTech Connect

Purpose: Accurate segmentation and volume estimation of the prostate gland in magnetic resonance (MR) and computed tomography (CT) images are necessary steps in diagnosis, treatment, and monitoring of prostate cancer. This paper presents an algorithm for the prostate gland volume estimation based on the semiautomated segmentation of individual slices in T2-weighted MR and CT image sequences. Methods: The proposedInter-Slice Bidirectional Registration-based Segmentation (iBRS) algorithm relies on interslice image registration of volume data to segment the prostate gland without the use of an anatomical atlas. It requires the user to mark only three slices in a given volume dataset, i.e., the first, middle, and last slices. Next, the proposed algorithm uses a registration algorithm to autosegment the remaining slices. We conducted comprehensive experiments to measure the performance of the proposed algorithm using three registration methods (i.e., rigid, affine, and nonrigid techniques). Results: The results with the proposed technique were compared with manual marking using prostate MR and CT images from 117 patients. Manual marking was performed by an expert user for all 117 patients. The median accuracies for individual slices measured using the Dice similarity coefficient (DSC) were 92% and 91% for MR and CT images, respectively. The iBRS algorithm was also evaluated regarding user variability, which confirmed that the algorithm was robust to interuser variability when marking the prostate gland. Conclusions: The proposed algorithm exploits the interslice data redundancy of the images in a volume dataset of MR and CT images and eliminates the need for an atlas, minimizing the computational cost while producing highly accurate results which are robust to interuser variability.

Khalvati, Farzad, E-mail: farzad.khalvati@uwaterloo.ca; Tizhoosh, Hamid R. [Department of Systems Design Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1 (Canada)] [Department of Systems Design Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1 (Canada); Salmanpour, Aryan; Rahnamayan, Shahryar [Department of Engineering and Applied Science, University of Ontario Institute of Technology, Oshawa, Ontario L1H 7K4 (Canada)] [Department of Engineering and Applied Science, University of Ontario Institute of Technology, Oshawa, Ontario L1H 7K4 (Canada); Rodrigues, George [Department of Radiation Oncology, London Regional Cancer Program, London, Ontario N6C 2R6, Canada and Department of Epidemiology/Biostatistics, University of Western Ontario, London, Ontario N6A 3K7 (Canada)] [Department of Radiation Oncology, London Regional Cancer Program, London, Ontario N6C 2R6, Canada and Department of Epidemiology/Biostatistics, University of Western Ontario, London, Ontario N6A 3K7 (Canada)

2013-12-15T23:59:59.000Z

449

Modeling population connectivity by ocean currents, a graph-theoretic approach for marine conservation  

Science Journals Connector (OSTI)

The dispersal of individuals among marine populations is of great importance to metapopulation dynamics, population persistence, and species expansion. Understanding this connectivity between distant populations ...

Eric A. Treml; Patrick N. Halpin; Dean L. Urban; Lincoln F. Pratson

2008-01-01T23:59:59.000Z

450

Structural character of the northern segment of the Paintbrush Canyon fault, Yucca Mountain, Nevada  

SciTech Connect

Detailed mapping of exposed features along the northern part of the Paintbrush Canyon fault was initiated to aid in construction of the computer-assisted three-dimensional lithostratigraphic model of Yucca Mountain, to contribute to kinematic reconstruction of the tectonic history of the Paintbrush Canyon fault, and to assist in the interpretation of geophysical data from Midway Valley. Yucca Mountain is segmented into relatively intact blocks of east-dipping Miocene volcanic strata, bounded by north-striking, west-dipping high-angle normal faults. The Paintbrush Canyon fault, representing the easternmost block-bounding normal fault, separates Fran Ridge from Midway Valley and continues northward across Yucca Wash to at least the southern margin of the Timber Mountain Caldera complex. South of Yucca Wash, the Paintbrush Canyon Fault is largely concealed beneath thick Quaternary deposits. Bedrock exposures to the north reveal a complex fault, zone, displaying local north- and west-trending grabens, and rhombic pull-apart features. The fault scarp, discontinuously exposed along a mapped length of 8 km north of Yucca Wash, dips westward by 41{degrees} to 74{degrees}. Maximum vertical offset of the Rhyolite of Comb Peak along the fault measures about 210 m in Paintbrush Canyon and, on the basis of drill hole information, vertical offset of the Topopoah Spring Tuff is about 360 m near the northern part of Fran Ridge. Observed displacement along the fault in Paintbrush Canyon is down to the west with a component of left-lateral oblique slip. Unlike previously proposed tectonic models, strata adjacent to the fault dip to the east. Quaternary deposits do not appear displaced along the fault scarp north of Yucca Wash, but are displaced in trenches south of Yucca Wash.

Dickerson, R.P. [Science Applications International Corp., Golden, CO (United States); Spengler, R.W. [Geological Survey, Denver, CO (United States)

1994-12-31T23:59:59.000Z

451

Clinical Utility of the Modified Segmental Boost Technique for Treatment of the Pelvis and Inguinal Nodes  

SciTech Connect

Purpose: Low-lying pelvic malignancies often require simultaneous radiation to pelvis and inguinal nodes. We previously reported improved homogeneity with the modified segmental boost technique (MSBT) compared to that with traditional methods, using phantom models. Here we report our institutional clinical experience with MSBT. Methods and Materials: MSBT patients from May 2001 to March 2007 were evaluated. Parameters analyzed included isocenter/multileaf collimation shifts, time per fraction (four fields), monitor units (MU)/fraction, femoral doses, maximal dose relative to body mass index, and inguinal node depth. In addition, a dosimetric comparison of the MSBT versus intensity modulated radiation therapy (IMRT) was conducted. Results: Of the 37 MSBT patients identified, 32 were evaluable. Port film adjustments were required in 6% of films. Median values for each analyzed parameter were as follows: MU/fraction, 298 (range, 226-348); delivery time, 4 minutes; inguinal depth, 4.5 cm; volume receiving 45 Gy (V45), 7%; V27.5, 87%; body mass index, 25 (range, 16.0-33.8). Inguinal dose was 100% in all cases; in-field inhomogeneity ranged from 111% to 118%. IMRT resulted in significantly decreased dose to normal tissue but required more time for treatment planning and a higher number of MUs (1,184 vs. 313 MU). Conclusions: In our clinical experience, the mono-isocentric MSBT provides a high degree of accuracy, improved homogeneity compared with traditional techniques, ease of simulation, treatment planning, treatment delivery, and acceptable femoral doses for pelvic/inguinal radiation fields requiring 45 to 50.4 Gy. In addition, the MSBT delivers a relatively uniform dose distribution throughout the treatment volume, despite varying body habitus. Clinical scenarios for the use of MSBT vs. intensity-modulated radiation therapy are discussed. To our knowledge, this is the first study reporting the utility of MSBT in the clinical setting.

Moran, M.S., E-mail: meena.moran@yale.ed [Yale University School of Medicine, Department of Therapeutic Radiology, New Haven, Connecticut (United States); Yale New Haven Hospital, New Haven, Connecticut and William W. Backus Hospital, Norwich, Connecticut (United States); Castrucci, W.A. [Yale University School of Medicine, Department of Therapeutic Radiology, New Haven, Connecticut (United States); Ahmad, M. [Yale University School of Medicine, Department of Therapeutic Radiology, New Haven, Connecticut (United States); Yale New Haven Hospital, New Haven, Connecticut and William W. Backus Hospital, Norwich, Connecticut (United States); Song, H. [Yale University School of Medicine, Department of Therapeutic Radiology, New Haven, Connecticut (United States); Lund, M.W. [Yale New Haven Hospital, New Haven, Connecticut and William W. Backus Hospital, Norwich, Connecticut (United States); Mani, S. [Yale University School of Medicine, Department of Therapeutic Radiology, New Haven, Connecticut (United States); Yale New Haven Hospital, New Haven, Connecticut and William W. Backus Hospital, Norwich, Connecticut (United States); Chamberlain, Daniel; Higgins, S.A. [Yale University School of Medicine, Department of Therapeutic Radiology, New Haven, Connecticut (United States)

2010-03-15T23:59:59.000Z

452

Describing the Properties of Chains of Segments Interacting Via Soft-Core Potentials of Variable Range with the SAFT-VR Approach  

Science Journals Connector (OSTI)

We present a general development for the equation of state (EOS) of chain molecules composed of tangent spherical segments interacting with a soft repulsive potential and an attractive well. The method is based o...

L. A. Davies; A. Gil-Villegas; G. Jackson

1998-05-01T23:59:59.000Z

453

The Stellar Population Histories of Local Early-Type Galaxies. I. Population Parameters  

E-Print Network (OSTI)

We present single stellar population (SSP) equivalent ages, metallicities, and abundance ratios for local elliptical galaxies derived from Hbeta, Mgb, and absorption line strengths. We use an extension of the Worthey (1994) stellar population models that incorporates non-solar line-strength "response functions" by Tripicco & Bell (1995), allowing us to correct the models for the enhancements of Mg and other alpha-like elements relative to the Fe-peak elements. SSP-equivalent ages of local ellipticals from Gonzalez (1993) are found to vary widely, 1.5 =+0.26 and =+0.20 (in an aperture of radius Re/8). The enhancement ratios are milder than previous estimates, owing to the application of non-solar abundance corrections to both Mgb and for the first time. Gradients in stellar populations within galaxies are found to be mild, with SSP-equivalent age decreasing by 25%, metallicity decreasing by =0.20 dex, and [E/Fe] remaining nearly constant out to an aperture of radius Re/2 for nearly all systems. Our ages have an overall zeropoint uncertainty of at least 25% due to uncertainties in the stellar evolution prescription, the oxygen abundance, the effect of non-solar abundances on the isochrones, and other unknowns. However, the relative age rankings of stellar populations should be largely unaffected by these errors. In particular, the large spread in ages appears to be real and cannot be explained by contamination of Hbeta by blue stragglers or hot horizontal branch stars, or by fill-in of Hbeta by emission. Correlations between these derived SSP-equivalent parameters and other galaxy observables will be discussed in future papers. (Abridged)

S. C. Trager; S. M. Faber; Guy Worthey; J. Jesus Gonzalez

2000-01-06T23:59:59.000Z

454

Identification of photons in double beta-decay experiments using segmented germanium detectors - studies with a GERDA Phase II prototype detector  

E-Print Network (OSTI)

The sensitivity of experiments searching for neutrinoless double beta-decay of germanium was so far limited by the background induced by external gamma-radiation. Segmented germanium detectors can be used to identify photons and thus reduce this background component. The GERmanium Detector Array, GERDA, will use highly segmented germanium detectors in its second phase. The identification of photonic events is investigated using a prototype detector. The results are compared with Monte Carlo data.

I. Abt; A. Caldwell; K. Krninger; J. Liu; X. Liu; B. Majorovits

2007-01-04T23:59:59.000Z

455

Simulated population responses of common carp to commercial exploitation  

SciTech Connect

Common carp Cyprinus carpio is a widespread invasive species that can become highly abundant and impose deleterious ecosystem effects. Thus, aquatic resource managers are interested in controlling common carp populations. Control of invasive common carp populations is difficult, due in part to the inherent uncertainty of how populations respond to exploitation. To understand how common carp populations respond to exploitation, we evaluated common carp population dynamics (recruitment, growth, and mortality) in three natural lakes in eastern South Dakota. Common carp exhibited similar population dynamics across these three systems that were characterized by consistent recruitment (ages 3 to 15 years present), fast growth (K = 0.37 to 0.59), and low mortality (A = 1 to 7%). We then modeled the effects of commercial exploitation on size structure, abundance, and egg production to determine its utility as a management tool to control populations. All three populations responded similarly to exploitation simulations with a 575-mm length restriction, representing commercial gear selectivity. Simulated common carp size structure modestly declined (9 to 37%) in all simulations. Abundance of common carp declined dramatically (28 to 56%) at low levels of exploitation (0 to 20%) but exploitation >40% had little additive effect and populations were only reduced by 49 to 79% despite high exploitation (>90%). Maximum lifetime egg production was reduced from 77 to 89% at a moderate level of exploitation (40%), indicating the potential for recruitment overfishing. Exploitation further reduced common carp size structure, abundance, and egg production when simulations were not size selective. Our results provide insights to how common carp populations may respond to exploitation. Although commercial exploitation may be able to partially control populations, an integrated removal approach that removes all sizes of common carp has a greater chance of controlling population abundance and reducing perturbations induced by this invasive species.

Weber, Michael J.; Hennen, Matthew J.; Brown, Michael L.

2011-12-01T23:59:59.000Z

456

Exploring Exoplanet Populations with NASA's Kepler Mission  

E-Print Network (OSTI)

The Kepler Mission is exploring the diversity of planets and planetary systems. Its legacy will be a catalog of discoveries sufficient for computing planet occurrence rates as a function of size, orbital period, star-type, and insolation flux. The mission has made significant progress toward achieving that goal. Over 3,500 transiting exoplanets have been identified from the analysis of the first three years of data, 100 of which are in the habitable zone. The catalog has a high reliability rate (85-90% averaged over the period/radius plane) which is improving as follow-up observations continue. Dynamical (e.g. velocimetry and transit timing) and statistical methods have confirmed and characterized hundreds of planets over a large range of sizes and compositions for both single and multiple-star systems. Population studies suggest that planets abound in our galaxy and that small planets are particularly frequent. Here, I report on the progress Kepler has made measuring the prevalence of exoplanets orbiting wit...

Batalha, Natalie M

2014-01-01T23:59:59.000Z

457

LAB 1: POPULATION Discussion:. This project compares three ...  

E-Print Network (OSTI)

Your first goal will be to graph the data in the table corresponding ... Data in MATLAB is stored in matrices. ... Graph the population predicted by formulas (1).

1910-00-12T23:59:59.000Z

458

Beyond Patient Health Escalating populations, expanding urban environments, poverty,  

E-Print Network (OSTI)

resistance, ozone depletion, asthma and heavy metal toxicity · The program also supports student and facultyBeyond Patient Health Escalating populations, expanding urban environments, poverty, pollution

Denham, Graham

459

STRUCTURE AND ENERGY FLOW OF A MUSSEL POPULATION ...  

Science Journals Connector (OSTI)

STRUCTURE AND ENERGY FLOW OF A MUSSEL POPULATION. IN A GEORGIA ... fore, be expected to influence the energy ...... same energy content. In spite...

460

Optimization Online - Varying the Population Size of Artificial ...  

E-Print Network (OSTI)

Mar 2, 2005 ... Varying the Population Size of Artificial Foraging Swarms on Time Varying ... Abstract: Swarm Intelligence (SI) is the property of a system...

Carlos Fernandes

2005-03-02T23:59:59.000Z

Note: This page contains sample records for the topic "distinct population segment" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Nanochannel-Directed Growth of One-Dimensional Multi-Segment Heterojunctions of Metallic Au1-xGex and Semiconducting Ge  

SciTech Connect

We report on the synthesis of multi-segment nanowire (NW) junctions of Au{sub 1-x}Ge{sub x} and Ge inside the nanochannels of porous anodic aluminum oxide template. The one-dimensional heterostructures are grown with a low-temperature chemical vapor deposition process, assisted by electrodeposited Au nanowires (AuNWs). The Au-catalyzed vapor-liquid-solid growth process occurs simultaneously in multiple locations along the nanochannel, which leads to multi-segment Au{sub 1-x}Ge{sub x}/Ge heterojunctions. The structures of the as-grown hybrid NWs, analyzed by using transmission electron microscopy and energy-dispersive X-ray spectroscopy elemental mapping, show clear compositional modulation with variable modulation period and controllable junction numbers. Remarkably, both GeNW and Au{sub 1-x}Ge{sub x}NW segments are single crystalline with abrupt interfaces and good crystallographic coherences. The electronic and transport properties of individual NW junctions are measured by using a multi-probe scanning tunneling microscope, which confirms the semiconducting nature of Ge segments and the metallic behavior of Au{sub 1-x}Ge{sub x} segments, respectively. The high yield of multiple segment NW junctions of a metal-semiconductor can facilitate the applications in nanoelectronics and optoelectronics that harness multiple functionalities of heterointerfaces.

Li, Xiangdong [Chinese Academy of Sciences; Meng, Guowen [Chinese Academy of Sciences; Qin, Shengyong [ORNL; Xu, Qiaoling [Chinese Academy of Sciences; Chu, Zhaoqin [Chinese Academy of Sciences; Zhu, Xiaoguang [Chinese Academy of Sciences; Kong, Mingguang [Chinese Academy of Sciences; Li, An-Ping [ORNL

2012-01-01T23:59:59.000Z

462

E-Print Network 3.0 - aboriginal canadian population Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

to include the distinct Canadian terms Aboriginal... -growing ... Source: Saskatchewan, University of - Department of Physics and Engineering Physics, Plasma Physics...

463

Modeling of hydroecological feedbacks predicts distinct classes of landscape pattern, process, and restoration potential in shallow aquatic ecosystems  

Science Journals Connector (OSTI)

It is widely recognized that interactions between vegetation and flow cause the emergence of channel patterns that are distinct from the standard Schumm classification of river channels. Although landscape pattern is known to be linked to ecosystem services such as habitat provision, pollutant removal, and sustaining biodiversity, the mechanisms responsible for the development and stability of different landscape patterns in shallow, vegetated flows have remained poorly understood. Fortunately, recent advances have made possible large-scale models of flow through vegetated environments that can be run over a range of environmental variables and over timescales of millennia. We describe a new, quasi-3D cellular automata model that couples simulations of shallow-water flow, bed shear stresses, sediment transport, and vegetation dynamics in an efficient manner. That efficiency allowed us to apply the model widely in order to determine how different hydroecological feedbacks control landscape pattern and process in various types of wetlands and floodplains. Distinct classes of landscape pattern were uniquely associated with specific types of allogenic and autogenic drivers in wetland flows. Regular, anisotropically patterned wetlands were dominated by allogenic processes (i.e., processes driven by periodic high water levels and flow velocities that redistribute sediment), relative to autogenic processes (e.g., vegetation production, peat accretion, and gravitational erosion). These anistropically patterned wetlands are therefore particularly prone to hydrologic disturbance. Other classes of wetlands that emerged from simulated interactions included maze-patterned, amorphous, and topographically noisy marshes, open marsh with islands, banded string-pool sequences perpendicular to flow, parallel deep and narrow channels flanked by marsh, and ridge-and-slough patterned marsh oriented parallel to flow. Because vegetation both affects and responds to the balance between the transport capacity of the flow and sediment supply, these vegetated systems exhibit a feedback that is not dominant in most rivers. Consequently, unlike in most rivers, it is not possible to predict the channel pattern of a vegetated landscape based only on discharge characteristics and sediment supply; the antecedent vegetation pattern and vegetation dynamics must also be known. In general, the stability of different wetland pattern types is most strongly related to factors controlling the erosion and deposition of sediment at vegetation patch edges, the magnitude of sediment redistribution by flow, patch elevation relative to water level, and the variability of erosion rates in vegetation patches with low flow-resistance. As we exemplify in our case-study of the Everglades ridge and slough landscape, feedback between flow and vegetation also causes hysteresis in landscape evolution trajectories that will affect the potential for landscape restoration. Namely, even if the hydrologic conditions that historically produced higher flows are restored, degraded portions of the ridge and slough landscape are unlikely to revert to their former patterning. As wetlands and floodplains worldwide become increasingly threatened by climate change and urbanization, the greater mechanistic understanding of landscape pattern and process that our analysis provides will improve our ability to forecast and manage the behavior of these ecosystems.

Laurel G. Larsen; Judson W. Harvey

2011-01-01T23:59:59.000Z

464

Population genomics of wild and laboratory zebrafish (Danio rerio)  

E-Print Network (OSTI)

, Bangladesh, Department of Zoology, Tribhuvan University, Kathmandu, Nepal, §§Wellcome Trust Sanger Institute zebrafish (Danio rerio) populations occurring in Nepal, India, and Bangladesh, and we genetically compared natural populations of tradi- tional laboratory models, for which a wide array of genomic resources

Bernatchez, Louis

465

Theoretical Population Biology 69 (2006) 231233 ESS theory now  

E-Print Network (OSTI)

Theoretical Population Biology 69 (2006) 231­233 Editorial ESS theory now More than 30 years have passed since the concept of evolutionarily stable strategy (ESS) was introduced in the context of animal of the ESS concept. Even today the main idea, and the more general one, remains to look for a population

Lessard, Sabin

466

Sibel Tari ---February 18, 2001 Ideal World (POPULATION)  

E-Print Network (OSTI)

· Statistical methods rest on probability theory · Probability theory is a branch of mathematics and it deals the characteristic of our population PROBABILITY THEORY 2. Descriptive Statistics Ch.6 Milton-Arnold Ch.1 Ang-Tang 3 be observed · Statistical methods allow us to derive the characteristic of the population based on sample

Erdem, Erkut

467

Molecular population genetics and epidemiology of Ceratocystis fagacearum  

E-Print Network (OSTI)

and the other population represented a sexually active disease center. Three polymorphic RFLP loci were found. Only one population, Willow Springs, had more than 1 allele present at the RFLP loci. Very low levels of variation (G = 1, 1, and 11.69) were detected...

Ivors, Kelly Lynn

1995-01-01T23:59:59.000Z

468

Ancient population genomics and the study of evolution  

Science Journals Connector (OSTI)

...2015 review-article PART IV: ANCIENT GENOMICS 1001 60 69 70 197 198 203 Discussion...and Christine Keyser Ancient population genomics and the study of evolution M. Parks...the beginnings of ancient population genomics and its use in the study of evolution...

2015-01-01T23:59:59.000Z

469

Limited-Information Modeling of Loggerhead Turtle Population Size  

E-Print Network (OSTI)

Limited-Information Modeling of Loggerhead Turtle Population Size John M. Grego University of South June 28, 2012 Abstract We attempt to estimate the size of a population of female loggerhead turtles. For these loggerhead turtle data, information about individual turtles is not available. Rather, we observe only

Hitchcock, David B.

470

RECOMMENDATIONS FOR MANAGEMEN T OF THE TURTLE NESTING POPULATION S  

E-Print Network (OSTI)

RECOMMENDATIONS FOR MANAGEMEN T OF THE TURTLE NESTING POPULATION S AT PANTAI REMIS, PERAK Submitted OF THE TURTLE NESTIN G POPULATIONS AT PANTAI REMIS, PERA K by Jeanne A . Mortimer, Ph .D . Senior Scientific this report : 1 . Approximately 70 to 300 egg clutches are deposited by gree n turtles each year in the region

Prestwich, Ken

471

Optimal Harvesting of Structured Populations*t WAYNE M. GETZ  

E-Print Network (OSTI)

density of the population [denoted by x(t)] satisfies a nonlinear ordinary differential equationOptimal Harvesting of Structured Populations*t WAYNE M. GETZ National Research Institute for Mathematical Sciences, CSIR, P.O. Box 395, Pretoria 0001, Republic of South Africa Received 18 April 1978

Getz, Wayne M.

472

Automated fibroglandular tissue segmentation and volumetric density estimation in breast MRI using an atlas-aided fuzzy C-means method  

SciTech Connect

Purpose: Breast magnetic resonance imaging (MRI) plays an important role in the clinical management of breast cancer. Studies suggest that the relative amount of fibroglandular (i.e., dense) tissue in the breast as quantified in MR images can be predictive of the risk for developing breast cancer, especially for high-risk women. Automated segmentation of the fibroglandular tissue and volumetric density estimation in breast MRI could therefore be useful for breast cancer risk assessment. Methods: In this work the authors develop and validate a fully automated segmentation algorithm, namely, an atlas-aided fuzzy C-means (FCM-Atlas) method, to estimate the volumetric amount of fibroglandular tissue in breast MRI. The FCM-Atlas is a 2D segmentation method working on a slice-by-slice basis. FCM clustering is first applied to the intensity space of each 2D MR slice to produce an initial voxelwise likelihood map of fibroglandular tissue. Then a prior learned fibroglandular tissue likelihood atlas is incorporated to refine the initial FCM likelihood map to achieve enhanced segmentation, from which the absolute volume of the fibroglandular tissue (|FGT|) and the relative amount (i.e., percentage) of the |FGT| relative to the whole breast volume (FGT%) are computed. The authors' method is evaluated by a representative dataset of 60 3D bilateral breast MRI scans (120 breasts) that span the full breast density range of the American College of Radiology Breast Imaging Reporting and Data System. The automated segmentation is compared to manual segmentation obtained by two experienced breast imaging radiologists. Segmentation performance is assessed by linear regression, Pearson's correlation coefficients, Student's pairedt-test, and Dice's similarity coefficients (DSC). Results: The inter-reader correlation is 0.97 for FGT% and 0.95 for |FGT|. When compared to the average of the two readers manual segmentation, the proposed FCM-Atlas method achieves a correlation ofr = 0.92 for FGT% and r = 0.93 for |FGT|, and the automated segmentation is not statistically significantly different (p = 0.46 for FGT% and p = 0.55 for |FGT|). The bilateral correlation between left breasts and right breasts for the FGT% is 0.94, 0.92, and 0.95 for reader 1, reader 2, and the FCM-Atlas, respectively; likewise, for the |FGT|, it is 0.92, 0.92, and 0.93, respectively. For the spatial segmentation agreement, the automated algorithm achieves a DSC of 0.69 0.1 when compared to reader 1 and 0.61 0.1 for reader 2, respectively, while the DSC between the two readers manual segmentation is 0.67 0.15. Additional robustness analysis shows that the segmentation performance of the authors' method is stable both with respect to selecting different cases and to varying the number of cases needed to construct the prior probability atlas. The authors' results also show that the proposed FCM-Atlas method outperforms the commonly used two-cluster FCM-alone method. The authors' method runs at ?5 min for each 3D bilateral MR scan (56 slices) for computing the FGT% and |FGT|, compared to ?55 min needed for manual segmentation for the same purpose. Conclusions: The authors' method achieves robust segmentation and can serve as an efficient tool for processing large clinical datasets for quantifying the fibroglandular tissue content in breast MRI. It holds a great potential to support clinical applications in the future including breast cancer risk assessment.

Wu, Shandong; Weinstein, Susan P.; Conant, Emily F.; Kontos, Despina, E-mail: despina.kontos@uphs.upenn.edu [Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States)] [Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States)

2013-12-15T23:59:59.000Z

473

Brazil 1 Buzius and Salvador Brazil is one of those countries that have a very distinctive feel and a vivid image. Each one  

E-Print Network (OSTI)

Brazil 1 ­ Buzius and Salvador Brazil is one of those countries that have a very distinctive feel and a vivid image. Each one of us carries a detailed picture of Brazil in his mind, even without being there and carnival. The fantastic thing is that upon arriving to Brazil, one finds out that the real Brazil matches

Beimel, Amos

474

A program for reducing teacher's resistance to changes in curriculum in centralized education systems. An experience on changes of mathematics text books in Iran based on distinction results.  

E-Print Network (OSTI)

systems. An experience on changes of mathematics text books in Iran based on distinction results. Zohreh systems are prepared from an upper-stream reference and hand over teachers' disposal . Curricula in Iran as Polya had said. And so curricula developers in Iran tried to integrate Polya's method in math books

Spagnolo, Filippo

475

Two distinct mechanisms of coherence in randomly perturbed dynamical systems R. E. Lee DeVille and Eric Vanden-Eijnden  

E-Print Network (OSTI)

Two distinct mechanisms of coherence in randomly perturbed dynamical systems R. E. Lee De mechanisms--coherence resonance and self-induced stochastic resonance--by which small random perturbations of excitable systems with large time scale separation may lead to the emergence of new coherent behaviors

Van Den Eijnden, Eric

476

Novel Activity of RGS14 on Go? and Gi? Nucleotide Binding and Hydrolysis Distinct from Its RGS Domain and GDI Activity  

Science Journals Connector (OSTI)

The bifunctional protein RGS14 is both a GTPase activating protein (GAP) for Gi? and Go? and a guanine nucleotide dissociation inhibitor (GDI) for Gi?. This GDI activity is isolated to a region of the protein distinct from the RGS domain that contains an ...

John R. Hepler; Wendy Cladman; Suneela Ramineni; Susanne Hollinger; Peter Chidiac

2005-03-18T23:59:59.000Z

477

Genomics Populations for Characterization of Economically Important Traits Structured populations of beef cattle with extensive phenotypic records for economical-  

E-Print Network (OSTI)

Genomics Populations for Characterization of Economically Important Traits Structured populations efficiency and carcass merit, are a critical need in the post-genome sequencing era. Coupled with the availability of the 7.5x assembly of the bovine genome sequence and the single nucleotide polymorphisms (SNP

478

Electricity Demand Evolution Driven by Storm Motivated Population Movement  

SciTech Connect

Managing the risks posed by climate change to energy production and delivery is a challenge for communities worldwide. Sea Level rise and increased frequency and intensity of natural disasters due to sea surface temperature rise force populations to move locations, resulting in changing patterns of demand for infrastructure services. Thus, Infrastructures will evolve to accommodate new load centers while some parts of the network are underused, and these changes will create emerging vulnerabilities. Combining climate predictions and agent based population movement models shows promise for exploring the universe of these future population distributions and changes in coastal infrastructure configurations. In this work, we created a prototype agent based population distribution model and developed a methodology to establish utility functions that provide insight about new infrastructure vulnerabilities that might result from these patterns. Combining climate and weather data, engineering algorithms and social theory, we use the new Department of Energy (DOE) Connected Infrastructure Dynamics Models (CIDM) to examine electricity demand response to increased temperatures, population relocation in response to extreme cyclonic events, consequent net population changes and new regional patterns in electricity demand. This work suggests that the importance of established evacuation routes that move large populations repeatedly through convergence points as an indicator may be under recognized.

Allen, Melissa R [ORNL; Fernandez, Steven J [ORNL; Fu, Joshua S [ORNL; Walker, Kimberly A [ORNL

2014-01-01T23:59:59.000Z

479

Auto-segmentation of normal and target structures in head and neck CT images: A feature-driven model-based approach  

SciTech Connect

Purpose: Intensity modulated radiation therapy (IMRT) allows greater control over dose distribution, which leads to a decrease in radiation related toxicity. IMRT, however, requires precise and accurate delineation of the organs at risk and target volumes. Manual delineation is tedious and suffers from both interobserver and intraobserver variability. State of the art auto-segmentation methods are either atlas-based, model-based or hybrid however, robust fully automated segmentation is often difficult due to the insufficient discriminative information provided by standard medical imaging modalities for certain tissue types. In this paper, the authors present a fully automated hybrid approach which combines deformable registration with the model-based approach to accurately segment normal and target tissues from head and neck CT images. Methods: The segmentation process starts by using an average atlas to reliably identify salient landmarks in the patient image. The relationship between these landmarks and the reference dataset serves to guide a deformable registration algorithm, which allows for a close initialization of a set of organ-specific deformable models in the patient image, ensuring their robust adaptation to the boundaries of the structures. Finally, the models are automatically fine adjusted by our boundary refinement approach which attempts to model the uncertainty in model adaptation using a probabilistic mask. This uncertainty is subsequently resolved by voxel classification based on local low-level organ-specific features. Results: To quantitatively evaluate the method, they auto-segment several organs at risk and target tissues from 10 head and neck CT images. They compare the segmentations to the manual delineations outlined by the expert. The evaluation is carried out by estimating two common quantitative measures on 10 datasets: volume overlap fraction or the Dice similarity coefficient (DSC), and a geometrical metric, the median symmetric Hausdorff distance (HD), which is evaluated slice-wise. They achieve an average overlap of 93% for the mandible, 91% for the brainstem, 83% for the parotids, 83% for the submandibular glands, and 74% for the lymph node levels. Conclusions: Our automated segmentation framework is able to segment anatomy in the head and neck region with high accuracy within a clinically-acceptable segmentation time.

Qazi, Arish A.; Pekar, Vladimir; Kim, John; Xie, Jason; Breen, Stephen L.; Jaffray, David A. [Radiation Medicine Program, Princess Margaret Hospital, Toronto, Ontario M5G 2M9 (Canada); Philips Research North America, Markham, Ontario L6C 2S3 (Canada); Radiation Medicine Program, Princess Margaret Hospital, Toronto, Ontario M5G 2M9 (Canada)

2011-11-15T23:59:59.000Z

480

Development of a four-grade and four-segment electrodialysis setup for desalination of polymer-flooding produced water  

Science Journals Connector (OSTI)

An electrodialysis (ED) setup with an 11m3/h water treatment scale was designed based on a small experimental device. The setup adopts four-grade and four-segment (four-GS) reversal electrodialysis (EDR) technology to desalinate polymer-flooding produced water (PFPW). The removal rate of total dissolved solids (TDS) with different flow rates was measured with different grades and segments. The operating performance of this setup was determined to meet design standards. The maximum treatment capacity and the optimal operation conditions of the tested setup were studied. The design standards were met only by adopting a four-GS ED setup. The maximal capacity of the four-GS ED setup for treating PFPW was 5m3/h. The optimal operating condition and results were at an operating electric current of 86A, 62.5% production rate of diluted treated PFPW, 0.89kW?h/m3 energy consumption, and 78.7% TDS removal rate. Under optimal conditions, the treated PFPW has two beneficial uses. First, the diluted treated PFPW is feasible for preparing polymer solutions. Second, the concentrated treated PFPW is feasible for replacing the original PFPW as the injecting water in the water-flooding process for high permeability layers.

Jing Guolin; Xing Lijie; Liu Yang; Du Wenting; Han Chunjie

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "distinct population segment" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Ultrafast population dynamics in electrically modulated terahertz quantum cascade lasers  

Science Journals Connector (OSTI)

The ultrafast population dynamics in electrically modulated three-well terahertz quantum cascade lasers (QCLs) is studied by using the self-consistent BlochPoisson equations. In the modulation process, the non-equilibrium oscillations of the population inversion are found before the population equilibrium recovers. The equilibrium formation time increases nonlinearly with the period number. This phenomenon stems from the non-uniform distribution of the electric potential. In different periods, different responses to the electrical modulation are also explored. An in-depth understanding of electron transport in the cascade structure is obtained. Finally, we demonstrate the feasibility of a modulation frequency up to gigahertz in terahertz QCLs.

F Wang; X G Guo; C Wang; J C Cao

2013-01-01T23:59:59.000Z

482

Interacting populations : hosts and pathogens, prey and predators  

E-Print Network (OSTI)

The interactions between populations can be positive, neutral or negative. Predation and parasitism are both relationships where one species benefits from the interaction at the expense of the other. Predators kill their ...

Klepac, Petra

2007-01-01T23:59:59.000Z

483

Projecting the Success of Plant Population Restoration with Viability Analysis  

Science Journals Connector (OSTI)

Conserving viable populations of plant species requires that they have high probabilities of long-term persistence within natural habitats, such as a chance of extinction in 100 years of less than 5 % (Menges ...

T. J. Bell; M. L. Bowles; A. K. McEachern

2003-01-01T23:59:59.000Z

484

Populating reconstructed archaeological sites with autonomous virtual humans  

Science Journals Connector (OSTI)

Significant multidisciplinary efforts combining archaeology and computer science have yielded virtual reconstructions of archaeological sites for visualization. Yet comparatively little attention has been paid to the difficult problem of populating these ...

Wei Shao; Demetri Terzopoulos

2006-08-01T23:59:59.000Z

485

Optimal Urban Population Size: National vs Local Economic Efficiency  

E-Print Network (OSTI)

This paper explores whether the population size of the Seoul Metropolitan Area (SMA) in Korea is efficient in terms of the national economy. To undertake this analysis, a recursively dynamic interregional computable general ...

Nam, Kyung-min

486

Coherence and Completeness of Population-based Family Cancer Reports  

Science Journals Connector (OSTI)

...research-article Research Articles Coherence and Completeness of Population-based...telephone survey in Connecticut examined coherence and completeness of reports from 1...household survey. This study describes the coherence and completeness of such reports in a...

Louise Wideroff; Anne O. Garceau; Mark H. Greene; Marsha Dunn; Timothy McNeel; Phuong Mai; Gordon Willis; Lou Gonsalves; Michael Martin; Barry I. Graubard

2010-03-01T23:59:59.000Z

487

Population SAMC, ChIP-chip Data Analysis and Beyond  

E-Print Network (OSTI)

This dissertation research consists of two topics, population stochastics approximation Monte Carlo (Pop-SAMC) for Baysian model selection problems and ChIP-chip data analysis. The following two paragraphs give a brief introduction to each...

Wu, Mingqi

2011-02-22T23:59:59.000Z

488

Population difference thermometry for ultra-low temperatures  

Science Journals Connector (OSTI)

We report measurements of the asymmetry of the intensities of the quadrupolar fine structure of NMR lines in ferromagnetic MnSb down to 30 mK. The asymmetry ratios provide a means of ... population difference the...

P. M. Andersen; N. S. Sullivan; B. Andraka; J. S. Xia

1992-11-01T23:59:59.000Z

489

GIS and plume dispersion modeling for population exposure assessment  

E-Print Network (OSTI)

. Traditional methods of dispersion modeling for the permitting of new sources and the monitoring of existing sources have allowed much room for error in terms of the effect of the pollutants on nearby populations (Hardikar, 1995). The capabilities of GIS...

Archer, Jeffrey Keith

2012-06-07T23:59:59.000Z

490

Mitochondrial genomics and northwestern Atlantic population genetics of marine annelids  

E-Print Network (OSTI)

The overarching goal of this thesis was to investigate marine benthic invertebrate phylogenetics and population genetics, focused on the phylum Annelida. Recent expansions of molecular methods and the increasing diversity ...

Jennings, Robert M. (Robert Michael)

2005-01-01T23:59:59.000Z

491

An Inversion of Acoustical Attenuation Measurements to Deduce Bubble Populations  

Science Journals Connector (OSTI)

Measurement of natural bubble populations is required for many areas of ocean science. Acoustical methods have considerable potential for achieving this goal because bubbles scatter sound strongly close to their natural frequency, which depends ...

H. Czerski

2012-08-01T23:59:59.000Z

492

DISTRIBUTION AND ABUNDANCE OF EGG AND LARVAL POPULATIONS OF THE  

E-Print Network (OSTI)

DISTRIBUTION AND ABUNDANCE OF EGG AND LARVAL POPULATIONS OF THE PACIFIC SARDINE BY ELBERT H OF THE INTERIOR, Douglas McKay, Secretary FISH AND WILDLIFE SERVICE, John L. Farley, Director DISTRIBUTION abundance_ _______________ ________ __ __ ___ ___ ____ __ 100 Reliability of estimates

493

Segmentation and morphometric analysis of subcortical regions in autistic MR brain images using fuzzy Gaussian distribution model-based distance regularised multi-phase level set  

Science Journals Connector (OSTI)

In this work, subcortical regions of autism spectrum disorder are analysed using fuzzy Gaussian distribution model-based distance regularised multi-phase level set method in autistic MR brain images. The fuzzy Gaussian distribution model is used as the intensity discriminator. The segmented images are validated with the ground truth using geometrical measure area. The results show that the fuzzy Gaussian distribution model-based multi-phase level set method is able to extract the subcortical tissue boundaries. The subcortical regions segmented using this method gives high correlation with ground truth. The corpus callosum area gives very high (R = 0.94) correlation. The brain stem and cerebellum present high correlations of 0.89 and 0.84, respectively. Also, it is found the segmented autistic subcortical regions have reduced area and are statistically significant (p brain area.

A.R. Jac Fredo; G. Kavitha; S. Ramakrishnan

2014-01-01T23:59:59.000Z

494

Projection models for health-effects assessment in populations exposed to radioactive and nonradioactive pollutants. Volume II. SPAHR introductory guide  

SciTech Connect

The Simulation Package for the Analysis of Health Risk (SPAHR) is a computer software package based upon a demographic model for health risk projections. The model extends several health risk projection models by making realistic assumptions about the population at risk, and thus represents a distinct improvement over previous models. Complete documentation for use of SPAHR is contained in this five-volume publication. The demographic model in SPAHR estimates population response to environmental toxic exposures. Latency of responses, changing dose level over time, competing risks from other causes of death, and population structure can be incorporated into SPAHR to project health risks. Risks are measured by morbid years, number of deaths, and loss of life expectancy. Comparisons of estimates of excess deaths demonstrate that previous health risk projection models may have underestimated excess deaths by a factor of from 2 to 10, depending on the pollutant and the exposure scenario. The software supporting the use of the demographic model is designed to be user oriented. Complex risk projects are made by responding to a series of prompts generated by the package. The flexibility and ease of use of SPAHR make it an important contribution to existing models and software packages. This volume gives the user of the SPAHR program the information required to operate the program when it is up and running on the computer. It assumes that the user is familiar with the concepts and terms relating to demography and health risk assessment. It contains a brief description of all commands and options available in SPAHR, as well as a user-oriented description of the structure and operation of the control system and language processor.

Collins, J.J.; Lundy, R.T.

1982-09-01T23:59:59.000Z

495

Michael J. Farrell Colonel, U.S. Army  

E-Print Network (OSTI)

National Oceanic and Atmospheric Administration NATIONAL MARINE FISHERIES SERVICE West Coast Region 650 Valley spring-run Chinook salmon (Oncorhynchus tshawytscha), threatened California Central Valley and Central Valley Spring-Run Chinook Salmon, and the Distinct Population Segment ofCentral Valley Steelhead

US Army Corps of Engineers

496

UNITED STATES DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration  

E-Print Network (OSTI)

Department of Motor Vehicles DPS Distinct Population Segment DWH Deep Water Horizon EFH Essential Fish 181 1 #12;2 ACRONYMS AND ABBREVIATIONS °C Degrees Celsius CWA Clean Water Act CHEU Charlotte Harbor Take Statement MHWL Mean High Water Line MLW Mean Low Water MLLW Mean Lower Low Water NGVD National

497

Comparisons of Access to, Cost of, and Quality of Health Care Between Rural and Urban Populations  

E-Print Network (OSTI)

There are 46.2 million Americans (15% of total population) living in rural counties. Rural populations disproportionately suffer from inadequate access to, high cost of, and poor quality of health services compared to urban populations. Furthermore...

Lee, Wei-Chen

2013-12-06T23:59:59.000Z

498

The dynamics of adapting, unregulated populations and a modified fundamental theorem  

Science Journals Connector (OSTI)

...applicable to an unregulated population, it does suggest further investigation of whether...1997 The price equation, Fisher's fundamental theorem, kin selection, and causal...unregulated populations and a modified fundamental theorem. | A population in a novel environment...

2013-01-01T23:59:59.000Z

499

First-principles study for the adsorption of segments of BPA-PC on ?-Al2O3(0001)  

Science Journals Connector (OSTI)

We have studied the adsorption of bisphenol-A-polycarbonate (BPA-PC) on the ?-Al2O3(0001) surface using density functional theory (DFT) with van der Waals (vdW) corrections. The BPA-PC polymer can be divided into its chemical fragments, which are phenylene, carbonate, and isopropylidene groups. We have calculated the adsorption energy and geometry of the BPA-PC segments that consist of two to three adjacent groups of the polymer. Our DFT results show that the adsorption is dominated by the vdW interaction. It is also important to include the interaction of nearest-neighbor groups in order to provide a realistic environment for the adsorption of the polymer onto the surface. Our results also show that the BPA-PC molecule attaches to the alumina surface via the carbonate group located in the middle of the molecule chain.

Janne Blomqvist and Petri Salo

2011-10-25T23:59:59.000Z

500

The importance of population growth in future commercial energy consumption  

SciTech Connect

This paper estimates the contribution of population growth to commercial energy consumption, which is considered a major cause of increases in air pollution and greenhouse gases. This paper first summarizes some of the recent estimates of future energy use developed by well-known models. It then develops several alternative scenarios that use different assumptions about population growth and energy use per capita for 122 countries for the years 2020 and 2050. It calculates the relative contribution of population growth to the change in total commercial energy use and demonstrates the sensitivity of the results to different assumptions. Individual country data are separately summed to totals for more-developed countries (MDCs) and less-developed countries (LDCs). Under a business as usual scenario for both MDCs and LDCs, population growth is important, but not the most important factor, in future increases in global energy consumption. Analysis of other scenarios shows that while slower population growth always contributes to a slowing of future global energy consumption, such changes are not as effective as reductions in per capita commercial energy use. Calculations on a global basis are made in two ways: from global aggregates and by summing individual country data. Comparison of the results shows that the first method is misleading because of the heterogeneity of population growth rates and energy consumption rates of individual countries. The tentative conclusions reached in this paper are only small pieces of a much larger puzzle. More work needs to be done to better understand the dynamics of these relationships before the analysis is extended to the broader questions of population growth and environmental change.

Kolsrud, G. [Congress, Washington, DC (United States); Torrey, B.B. [Bureau of the Census, Washington, DC (United States)

1992-12-31T23:59:59.000Z