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1

Mechanin?s aktyvacijos ir pried? poveikis ekstrakcinio pushidra?io fosfogipso ir jo gamini? savyb?ms.  

E-Print Network (OSTI)

??Fosfogipso perdirbimas tampa vis aktualesn? problema ne tik Lietuvoje, bet ir visame pasaulyje. Tiek Lietuvos, tiek ir pasaulio mokslininkai jau seniai bando spr?sti fosfogipso perdirbimo… (more)

Gaidu?is, Sergejus

2010-01-01T23:59:59.000Z

2

Sen?jimo ?taka ekstrakcinio pushidra?io fosfogipso ir jo gamini? savyb?ms.  

E-Print Network (OSTI)

??Baigiamajame magistro darbe nagrin?jamas k? tik nuo atliek? šalinimo konvejerio nuimtas, neatv?s?s ir nesusihidratav?s ekstrakcinis pushidratis fosfogipsas. Tai pati gausiausia mineralin? atlieka, kurios s?vartynai spar?iai… (more)

Parfionov,; Sergej

2007-01-01T23:59:59.000Z

3

I/O Benchmarks  

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

Benchmarks IO Benchmarks Transfer rates measured 4 times per day for the past week on all of the eliza file systems are shown below. For more details see IO Benchmarking Details....

4

FCT Education: Increase Your H2IQ  

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

Increase Your H2IQ to someone by Increase Your H2IQ to someone by E-mail Share FCT Education: Increase Your H2IQ on Facebook Tweet about FCT Education: Increase Your H2IQ on Twitter Bookmark FCT Education: Increase Your H2IQ on Google Bookmark FCT Education: Increase Your H2IQ on Delicious Rank FCT Education: Increase Your H2IQ on Digg Find More places to share FCT Education: Increase Your H2IQ on AddThis.com... Home Increase Your H2IQ Fuel Cell Basics Hydrogen Production Basics Hydrogen Delivery Basics Hydrogen Storage Basics Hydrogen Safety Basics For Safety & Code Officials For State & Local Governments For Early Adopters For Students & Educators Careers in Hydrogen & Fuel Cells Quick Links Hydrogen Production Hydrogen Delivery Hydrogen Storage Fuel Cells Technology Validation Manufacturing

5

I/O Test  

E-Print Network (OSTI)

IO TEST is intended as a hardware testing and debugging aid for use with the PDP-6 and its associated input multiplexer (analog to digital converter) and output multiplexer (digital to analog converter). While all characters ...

Beeler, Michael

1967-10-01T23:59:59.000Z

6

I/O Benchmarking Details  

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

IO Benchmarking Details IO Benchmarking Details These benchmarks are simply the transfer rate for copying some files from an eliza file system to TMPDIR on a batch node. Each...

7

EdenIQ | Open Energy Information  

Open Energy Info (EERE)

EdenIQ EdenIQ Jump to: navigation, search Name EdenIQ Place Visalia, California Zip 93291 Sector Biofuels Product EdenIQ is a spin-out of Altra Biofuels that is developing yield enhancement biofuels technology. Coordinates 38.915755°, -84.452241° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.915755,"lon":-84.452241,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

8

Cray IO COE  

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

IO COE IO COE Performance of MPIIO on DVS+GPFS Yushu Yao Collaboration with: Mike Aamodt, Katie Antypas, Tina Butler, Mark Cruciani, Jason Hick, David Knaak, Rei Lee, Rose Olson, Mike Welcome 1 Wednesday, July 25, 12 WHY 2 Wednesday, July 25, 12 Scratch 35GB/S LSI 7900 OSS OSS OSS OSS OSS OSS ... ... LSI 7900 LSI 7900 ... ... LSI 7900 LSI 7900 ... ... DDN DDN DDN DDN PROJECT DVS DDN DDN DDN DDN GSCRATCH Data Analysis Visualization ... ... PNSD PNSD PNSD CMP CMP CMP ... CMP CMP CMP ... ... ... ... Carver ... Euclid ... ... Reason 1. Users Love Global File Systems FAST MPIIO!!! 3 Wednesday, July 25, 12 0 3 6 9 12 Carver FilePerProc Hopper FilePerProc Carver MPIIO Hopper MPIIO 1.8 7 11 11 0.8 11 12 12 Read Write GB/Sec Performance using IOR (Jan 2012) 20 nodes with 4PE/node Reason 2. Well, DVS+MPIIO Was Super SLOW

9

Production I/O Characterization  

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

library that collects IO access pattern in- formation from large-scale production applications with minimal overhead. In this paper we present our experiences in...

10

High Performance I/O  

Science Conference Proceedings (OSTI)

Parallelisation, serial optimisation, compiler tuning, and many more techniques are used to optimise and improve the performance scaling of parallel programs. One area which is frequently not optimised is file I/O. This is because it is often not considered ... Keywords: I/O, HPC, optimisation, parallelisation, Lustre, GPFS, MPI-I/O, HDF5, NetCDF

Adrian Jackson; Fiona Reid; Joachim Hein; Alejandro Soba; Xavier Saez

2011-02-01T23:59:59.000Z

11

EFG IO?-90)  

Office of Legacy Management (LM)

.?GE = 1325 d .?GE = 1325 d +3-891 EFG IO?-90) ' United States Government *memorandum DATE: FEB 6 1991 . . I ;' 1 , q' *_* Departrnkt of Energy --. -* r- i .,. 1 .' ;I "--' I ,_ % I : [ -- ,: -.. ! j i 1: \ REPLY TO ATTN OF: EM-421 SUBJECT: Authority Determination-- Former Beryllium Production Facility in Luckey, ' Ohio TO: The File The attached review documents the basis for determining whether DOE has authority for taking remedial action at the former beryllium production facility in Luckey, Ohio, under the Formerly Utilized Sites Remedial Action Program (FUSRAP). The following factors are significant in reaching determination: o The land was owned by the government at the time that the facility produced beryllium. o The facility was controlled by the AK both directly and indirectly.

12

PDSF I/O Resources  

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

may crash. Modify Existing Jobs To Add IO Resource Flags For example you have a job with number 4057136 qstat -j 4057136 Then look for a line hard resourcelist: Assume it says:...

13

I/O deduplication: utilizing content similarity to improve I/O performance  

Science Conference Proceedings (OSTI)

Duplication of data in storage systems is becoming increasingly common. We introduce I/O Deduplication, a storage optimization that utilizes content similarity for improving I/O performance by eliminating I/O operations and reducing the mechanical delays ...

Ricardo Koller; Raju Rangaswami

2010-02-01T23:59:59.000Z

14

Bring Your Green to Work: IQ quiz | ENERGY STAR  

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

care resources Small business resources State and local government resources Bring Your Green to Work: IQ quiz Think you know about energy efficiency? Take this 10-question quiz...

15

ORI. RAD-1 IO IWX' ARTYENT OF HEALTX AIVD REKABILtTATIVt SERVICPS  

Office of Legacy Management (LM)

ORI. RAD-1 IO ORI. RAD-1 IO , IWX' ARTYENT OF HEALTX AIVD REKABILtTATIVt SERVICPS IHVIRION OF HEALTR ?wt ow** m.. mo JDebnr.llh. Pwwu* a- , Pagi 1 of 2' Pa& RADIOACTIVE MATERIALS LlCENiEH** 396-2, MSUMmT IED. 4 k8o Pursuant to Chapter 290, Florida' Statutes, and Chapter IqD-56, Florida Administrative Code, Control of Radiation Hazards, an in reliance on statements and representations heretofore made by the licensee designated below, a license is hereby issued authorizin :uch licensee to transfer, receive, possess and use the radioactive material(s) designated below and to use such radioactive material (S for the purpose(s) and at the place(s) designated below. This license is aubjcct to all applicable rules, regulations and orders of tl state of Florida, Department of health and Rchabilitetive Servicrc now or hereafter in effect and to any conditions specified belo)

16

Transfer Rate vs. I/O Units  

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

O Units Transfer Rate vs. IO Units These plots show the transfer rate from the IO benchmarks as a function of the number of elizaio units in use for each particular eliza at the...

17

Edison File Storage and I/O  

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

File Storage and IO File Storage and IO Disk Quota Change Request Form Edison File Systems The Edison system has 4 different file systems; they provide different levels of disk...

18

Special Inquiry: IO1HQ005 | Department of Energy  

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

IO1HQ005 Special Inquiry: IO1HQ005 April 23, 2001 Special Review of the Yucca Mountain Project, IO1HQ005 Special Inquiry: IO1HQ005 More Documents & Publications Special Inquiry:...

19

Evaluating Parallel I/O Energy Efficiency  

Science Conference Proceedings (OSTI)

Energy efficiency and parallel I/O performance are two primary constraints in high performance computing (HPC). Large scale computing systems consume vast amounts of energy and require scalable I/O performance to meet the needs of a broad spectrum of ... Keywords: Energy efficiency, Parallel I/O, DVFS

Rong Ge

2010-12-01T23:59:59.000Z

20

I/O acceleration with pattern detection  

Science Conference Proceedings (OSTI)

The I/O bottleneck in high-performance computing is becoming worse as application data continues to grow. In this work, we explore how patterns of I/O within these applications can significantly affect the effectiveness of the underlying storage systems ... Keywords: I/O, PLFs, high performance com- puting, large-scale storage systems, pattern, prefetching

Jun He; John Bent; Aaron Torres; Gary Grider; Garth Gibson; Carlos Maltzahn; Xian-He Sun

2013-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "io ir iq" 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

Fuel Economy of the 2013 Scion iQ EV  

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

Scion iQ EV Search for Other Vehicles View the Mobile Version of This Page Automatic (variable gear ratios) Electricity Compare Side-by-Side EV EPA Fuel Economy Miles per Gallon...

22

Understanding i/o performance using i/o skeletal applications  

Science Conference Proceedings (OSTI)

We address the difficulty involved in obtaining meaningful measurements of I/O performance in HPC applications, as well as the further challenge of understanding the causes of I/O bottlenecks in these applications. The need for I/O optimization is critical ...

Jeremy Logan; Scott Klasky; Hasan Abbasi; Qing Liu; George Ostrouchov; Manish Parashar; Norbert Podhorszki; Yuan Tian; Matthew Wolf

2012-08-01T23:59:59.000Z

23

LACIO: A New Collective I/O Strategy for Parallel I/O Systems  

Science Conference Proceedings (OSTI)

Parallel applications benefit considerably from the rapid advance of processor architectures and the available massive computational capability, but their performance suffers from large latency of I/O accesses. The poor I/O performance has been attributed as a critical cause of the low sustained performance of parallel systems. Collective I/O is widely considered a critical solution that exploits the correlation among I/O accesses from multiple processes of a parallel application and optimizes the I/O performance. However, the conventional collective I/O strategy makes the optimization decision based on the logical file layout to avoid multiple file system calls and does not take the physical data layout into consideration. On the other hand, the physical data layout in fact decides the actual I/O access locality and concurrency. In this study, we propose a new collective I/O strategy that is aware of the underlying physical data layout. We confirm that the new Layout-Aware Collective I/O (LACIO) improves the performance of current parallel I/O systems effectively with the help of noncontiguous file system calls. It holds promise in improving the I/O performance for parallel systems.

Chen, Yong [ORNL; Sun, Xian-He [Illinois Institute of Technology; Thakur, Dr. Rajeev [Argonne National Laboratory (ANL); Roth, Philip C [ORNL; Gropp, William D [University of Illinois, Urbana-Champaign

2011-01-01T23:59:59.000Z

24

I/O Formats at NERSC  

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

I/O Formats I/O Formats I/O Formats Software I/O continues to be one of the main bottlenecks for scientific applications. Here are two software packages that many application developers use to manage input/output of heterogeneous types of binary application data used on many different platforms. HDF5 and NETCDF are both implemented on top of MPI-IO and have gained popularity as alternatives to basic POSIX API. HDF5 is a machine-independent and self-documenting file format. Each HDF5 file "looks" like a directory tree, with subdirectories, and leaf nodes that contain the actual data. This means that data can be found in a file by referring to its name, rather than its location in the file. NetCDF is a file format and support library developed at the National Center for Atmospheric Research (NCAR).

25

Increase in IO Bandwidth to Enhance Future Understanding of Climate...  

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

Increase in IO Bandwidth to Enhance Future Understanding of Climate Change Increase in IO Bandwidth to Enhance Future Understanding of Climate Change August 6, 2009...

26

IR-2003-  

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

Relations Office Washington, D.C. Media Contact: 202.622.4000 Relations Office Washington, D.C. Media Contact: 202.622.4000 www.IRS.gov/newsroom Public Contact: 800.829.1040 $1 BILLION IN TAX CREDITS ALLOCATED TO CLEAN COAL PROJECTS IR-2006-184, Nov. 30, 2006 WASHINGTON - The Internal Revenue Service announced that it has allocated nearly $1 billion of tax credits to nine planned clean coal projects. The Energy Policy Act of 2005 authorized $1.65 billion in tax credits for clean coal projects. The Act allocated $800 million of credits to integrated gasification combined cycle (IGCC) projects, $500 million to non-IGCC advanced coal electricity generation projects and $350 million to gasification projects. The $800 million allocated to IGCC projects is required to be allocated in relatively equal amounts among bituminous coal,

27

I/O Libraries at NERSC  

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

improved support for parallel IO. Read More H5Part H5Part is a simplified 'veneer' API that sits on top of HDF5 and supports several commonly used data models. Read More ...

28

NUG_Parallel_IO_Oct2009.ppt  

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

a hierarchical directory tree, e.g. "the home file system." - We can treat this as "one big disk," but it may actually be a complex collection of disk arrays, IO servers, and...

29

IQ-Station: a low cost portable immersive environment  

Science Conference Proceedings (OSTI)

The emergence of inexpensive 3D-TVs, affordable input and rendering hardware and open-source software has created a yeasty atmosphere for the development of low-cost immersive systems. A low cost system (here dubbed an IQ-station), fashioned from commercial ...

William R. Sherman; Patrick O'Leary; Eric T. Whiting; Shane Grover; Eric A. Wernert

2010-11-01T23:59:59.000Z

30

IBM system z10 I/O subsystem  

Science Conference Proceedings (OSTI)

The performance, reliability, and functionality of a large server are greatly influenced by the design characteristics of its I/O subsystem. The critical components of the IBM System z10™ I/O subsystem have, therefore, been significantly ...

E. W. Chencinski; M. A. Check; C. DeCusatis; H. Deng; M. Grassi; T. A. Gregg; M. M. Helms; A. D. Koenig; L. Mohr; K. Pandey; T. Schlipf; T. Schober; H. Ulrich; C. R. Walters

2009-01-01T23:59:59.000Z

31

Discovering Structure in Unstructured I/O  

Science Conference Proceedings (OSTI)

Checkpointing is the predominant storage driver in today's petascale supercomputers and is expected to remain as such in tomorrow's exascale supercomputers. Users typically prefer to checkpoint into a shared file yet parallel file systems often perform ... Keywords: pattern, structure, I/O, metadata, parallel file system, PLFS

Jun He, John Bent, Aaron Torres, Gary Grider, Garth Gibson, Carlos Maltzahn, Xian-He Sun

2012-11-01T23:59:59.000Z

32

Petascale I/O using HDF-5  

Science Conference Proceedings (OSTI)

Our work is focused on performing Petascale Direct Numerical Simulations (DNS) of turbulent flows. An essential performance component of these simulations are the restart files, as a single petascale simulation will write on the order of a petabyte. ... Keywords: DNS, HPC, computational fluid dynamics, petascale I/O

Nicholas Malaya; Karl W. Schulz; Robert Moser

2010-08-01T23:59:59.000Z

33

Reasoning about i/o in functional programs  

Science Conference Proceedings (OSTI)

We look at formalisms for reasoning about the effects of I/O in pure functional programs, covering both the monadic I/O of Haskell and the uniqueness-based framework used by Clean. The material will cover comparative studies of I/O reasoning for Haskell, ...

Andrew Butterfield

2011-06-01T23:59:59.000Z

34

Security and privacy threats in IoT architectures  

Science Conference Proceedings (OSTI)

In this paper, we describe developments towards the Internet of Things (IoT) and discuss architecture visions for the IoT. Our emphasis is to analyze the known and new threats for the security, privacy and trust (SPT) at different levels of architecture. ... Keywords: IoT architecture, energy consumption, future internet, privacy, security, trust

Denis Kozlov; Jari Veijalainen; Yasir Ali

2012-02-01T23:59:59.000Z

35

Optimization Techniques at the I/O Forwarding Layer  

Science Conference Proceedings (OSTI)

I/O is the critical bottleneck for data-intensive scientific applications on HPC systems and leadership-class machines. Applications running on these systems may encounter bottlenecks because the I/O systems cannot handle the overwhelming intensity and ... Keywords: I/O Forwarding, Parallel file systems, Leadership-class machines

Kazuki Ohta; Dries Kimpe; Jason Cope; Kamil Iskra; Robert Ross; Yutaka Ishikawa

2010-09-01T23:59:59.000Z

36

Design and implementation of semi-preemptible IO  

Science Conference Proceedings (OSTI)

Allowing higher-priority requests to preempt ongoing disk IOs is of particular benefit to delay-sensitive multimedia and real-time systems. In this paper we propose Semi-preemptible IO, which divides an IO request into small temporal units of disk commands ...

Zoran Dimitrijevi?; Raju Rangaswami; Edward Chang

2003-03-01T23:59:59.000Z

37

IOFSL: I/O Forwarding Scalability Layer | Argonne National Laboratory  

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

IOFSL: I/O Forwarding Scalability Layer IOFSL: I/O Forwarding Scalability Layer IOFSL is used to aggregate I/O operations, enabling large-scale application tracing for performance analysis of file systems IOFSL is used to aggregate I/O operations, enabling large-scale application tracing for performance analysis of file systems The IOFSL (I/O Forwarding Scalability Layer) project will design, build, and distribute a scalable, unified high-end computing I/O forwarding software layer that will be adopted and supported by DOE Office of Science and NNSA. This software layer will Provide function shipping at the file system interface level (without requiring middleware) that enables asynchronous coalescing and I/O without jeopardizing determinism for computation; Offload file system function from simple or full OS client processes

38

Cross-Validation Estimation for Frequency-Dependent I/Q Imbalance in MIMO-OFDM Receivers  

Science Conference Proceedings (OSTI)

The effects of variation in RF, such as I/Q imbalance and filter mismatch, are extremely important for OFDM wireless accesses. This work presents a low-computational estimation of I/Q imbalances with filter mismatches to improve performance in MIMO-OFDM ... Keywords: Cross validation, Filter mismatch, Frequency-Dependent Imbalance (FDI), I/Q imbalance, MIMO-OFDM

Wei-Chi Lai; Ta-Yang Juan; Terng-Yin Hsu; Sheng-Lun Chiou

2010-07-01T23:59:59.000Z

39

ALS control system IP I/O module upgrade  

E-Print Network (OSTI)

the Fast Orbit Feedback at the ALS, Proceedings of PAC 2003,ALS Control System IP I/O Module Upgrade* J. M . Weber, M .

Weber, Jonah M.; Chin, Michael

2004-01-01T23:59:59.000Z

40

Towards scalable I/O architecture for exascale systems  

Science Conference Proceedings (OSTI)

High performance computing (HPC) has crossed the Petaflop mark and is reaching the Exaflop range quickly. The exascale system is projected to have millions of nodes, with thousands of cores for each node. At such an extreme scale, the substantial amount ... Keywords: exascale systems, high performance computing, many-task computing, parallel I/O, parallel file systems, scalable I/O architecture, storage

Yong Chen

2011-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "io ir iq" 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

IoT-IMS Communication Platform for Future Internet  

Science Conference Proceedings (OSTI)

In recent years, Internet of Things (IoT) and Cloud Computing are the hottest issues of Future Internet. However, there is a lack of common fabric for integrating IoT and Cloud. In telecommunications, the IMS (IP Multimedia Subsystem), based on the All-IP ... Keywords: Cloud Computing, Future Internet, IP Multimedia Subsystem, Internet of Things, Next Generation Network

Chi-Yuan Chen; Yuh-Shyan Chen; Han-Chieh Chao; Tin-Yu Wu; Chun-I Fan; Jiann-Liang Chen; Jenq-Muh Hsu

2011-10-01T23:59:59.000Z

42

Using active NVRAM for I/O staging  

Science Conference Proceedings (OSTI)

With HPC machines moving to the exascale, scaling the I/O performance of applications is a well known problem. Also, a closely related problem is, how to efficiently analyze and extract useful information from I/O data, viz. data post processing. With ... Keywords: DataStaging, non-volatile memory, post processing

Sudarsun Kannan; Ada Gavrilovska; Karsten Schwan; Dejan Milojicic; Vanish Talwar

2011-11-01T23:59:59.000Z

43

Remote I/O : fast access to distant storage.  

SciTech Connect

As high-speed networks make it easier to use distributed resources, it becomes increasingly common that applications and their data are not colocated. Users have traditionally addressed this problem by manually staging data to and from remote computers. We argue instead for a new remote I/O paradigm in which programs use familiar parallel I/O interfaces to access remote file systems. In addition to simplifying remote execution, remote I/O can improve performance relative to staging by overlapping computation and data transfer or by reducing communication requirements. However, remote I/O also introduces new technical challenges in the areas of portability, performance, and integration with distributed computing systems. We propose techniques designed to address these challenges and describe a remote I/O library called RIO that we have developed to evaluate the effectiveness of these techniques. RIO addresses issues of portability by adopting the quasi-standard MPI-IO interface and by defining a RIO device and RIO server within the ADIO abstract I/O device architecture. It addresses performance issues by providing traditional I/O optimizations such as asynchronous operations and through implementation techniques such as buffering and message forwarding to off load communication overheads. RIO uses the Nexus communication library to obtain access to configuration and security mechanisms provided by the Globus wide area computing tool kit. Microbenchmarks and application experiments demonstrate that our techniques achieve acceptable performance in most situations and can improve turnaround time relative to staging.

Foster, I.; Kohr, D., Jr.; Krishnaiyer, R.; Mogill, J.

1997-12-17T23:59:59.000Z

44

Efficient data IO for a Parallel Global Cloud Resolving Model  

Science Conference Proceedings (OSTI)

Execution of a Global Cloud Resolving Model (GCRM) at target resolutions of 2-4 km will generate, at a minimum, 10s of Gigabytes of data per variable per snapshot. Writing this data to disk, without creating a serious bottleneck in the execution of the ... Keywords: Data formatting, Geodesic grid, Global Cloud Resolving Model, Grid Specifications, High performance IO, Parallel IO libraries

Bruce Palmer; Annette Koontz; Karen Schuchardt; Ross Heikes; David Randall

2011-12-01T23:59:59.000Z

45

Production I/O Characterization on the Cray XE6 | Argonne National...  

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

Production IO Characterization on the Cray XE6 Title Production IO Characterization on the Cray XE6 Publication Type Conference Paper Year of Publication 2013 Authors Carns, PH,...

46

Parallel I/O Software Infrastructure for Large-Scale Systems  

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

Parallel IO Software Infrastructure for Large-Scale Systems Parallel IO Software Infrastructure for Large-Scale Systems | Tags: Math & Computer Science Choudhary.png An...

47

> GC-62 HQS Io002  

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

3/01 THI 13:35 FAX CA --- 3/01 THI 13:35 FAX CA --- > GC-62 HQS Io002 Statement of Considerations REQUEST BY 3M FOR AN ADVANCE WAIVER OF DOMESTIC AND FOREIGN RIGHTS IN SUBJECT INVENTIONS MADE IN THE COURSE OF OR SUBCONTRACT NO. 4500011817 UNDER DOE PRIME CONTRACT NO. DE-ACOS- 00OR22725; DOE WAIVER DOCKET W(A)-00-012 [ORO-752] Petitioner, 3M, has made a timely request for an advance waiver to worldwide rights in Subject Inventions made in the course of or under Subcontract No. 4500011817 under DOE Prime Contract DE-AC05-000R22725 with UT-Battelle, LLC. The scope of this work is to produce long (10-100 meter) High Temperature Superconductive (HTS) tapes. HTS tapes will be produced under varying conditions, tested and analyzed. A selection will be made between the ion beam-assisted

48

A scalable high-performance I/O system  

SciTech Connect

A significant weakness of many existing parallel supercomputers is their lack of high-performance parallel I/O. This weakness has prevented, in many cases, the full exploitation of the true potential of MPP systems. As part of a joint project with IBM, we have designed a parallel I/O system for an IBM SP system that can provide sustained I/O rates of greater than 160 MB/s from collections of compute nodes to archival disk and peak transfer rates that should exceed 400 MB/s from compute nodes to I/O servers. This testbed system is being used for a number of projects, first it will provide a high-performance experimental I/O system for traditional computational science applications, second it will b used as an I/O software and development environment for new parallel I/O algorithms and operating systems support, and third it will be used as the foundation for a number of new projects designed to develop enabling technology for the National Information Infrastructure. This report describes the system under development at Argonne National Laboratory, provides some preliminary performance results, and outlines future experiments and directions.

Henderson, M.; Nickless, B.; Stevens, R.

1994-05-01T23:59:59.000Z

49

Stream combination: Adaptive IO scheduling for streaming servers  

E-Print Network (OSTI)

Cycle-based IO schedulers use statically configured timecycle durations. As a result, they are unable to avoid the formation of virtual bottlenecks. We term a bottleneck as virtual when it occurs within a single resource subsystem, and it is possible to use a secondary under-utilized resource to thwart the bottleneck. The primary reason for virtual bottlenecks in streaming servers is static allocation of memory and disk-bandwidth resources using fixed time-cycle durations. As a result, shifting request workload can cause a virtual bottleneck either in the memory or disk subsystem. We present stream combination, an adaptive IO scheduling technique that addresses this problem in a comprehensive fashion. Stream combination predicts the formation of virtual bottlenecks and proactively alters the IO schedule to avoid them. A simulation study suggests significant performance gains compared to the current state-of-the-art fixed time-cycle IO scheduler. 1

Bin Liu; Raju Rangaswami

2006-01-01T23:59:59.000Z

50

CMOS circuits for VCSEL-based optical IO  

E-Print Network (OSTI)

Electrical IO is becoming limited by copper interconnect channel losses that depend on frequency and distance. Package-to-package optical interconnects see negligible frequency-dependent channel losses, but data rates are ...

Kern, Alexandra M., 1979-

2007-01-01T23:59:59.000Z

51

I/O performance challenges at leadership scale  

Science Conference Proceedings (OSTI)

Today's top high performance computing systems run applications with hundreds of thousands of processes, contain hundreds of storage nodes, and must meet massive I/O requirements for capacity and performance. These leadership-class systems face daunting ...

Samuel Lang; Philip Carns; Robert Latham; Robert Ross; Kevin Harms; William Allcock

2009-11-01T23:59:59.000Z

52

Exploiting Latent I/O Asynchrony in Petascale Science Applications  

Science Conference Proceedings (OSTI)

We present a collection of techniques for exploiting latent I/O asynchrony which can substantially improve performance in data-intensive parallel applications. Latent asynchrony refers to an applicationâ??s tolerance for decoupling ancillary operations ...

Patrick Widener; Matthew Wolf; Hasan Abbasi; Scott Mcmanus; Mary Payne; Matthew Barrick; Jack Pulikottil; Patrick Bridges; Karsten Schwan

2011-05-01T23:59:59.000Z

53

Current parallel I/O limitations to scalable data analysis.  

Science Conference Proceedings (OSTI)

This report describes the limitations to parallel scalability which we have encountered when applying our otherwise optimally scalable parallel statistical analysis tool kit to large data sets distributed across the parallel file system of the current premier DOE computational facility. This report describes our study to evaluate the effect of parallel I/O on the overall scalability of a parallel data analysis pipeline using our scalable parallel statistics tool kit [PTBM11]. In this goal, we tested it using the Jaguar-pf DOE/ORNL peta-scale platform on a large combustion simulation data under a variety of process counts and domain decompositions scenarios. In this report we have recalled the foundations of the parallel statistical analysis tool kit which we have designed and implemented, with the specific double intent of reproducing typical data analysis workflows, and achieving optimal design for scalable parallel implementations. We have briefly reviewed those earlier results and publications which allow us to conclude that we have achieved both goals. However, in this report we have further established that, when used in conjuction with a state-of-the-art parallel I/O system, as can be found on the premier DOE peta-scale platform, the scaling properties of the overall analysis pipeline comprising parallel data access routines degrade rapidly. This finding is problematic and must be addressed if peta-scale data analysis is to be made scalable, or even possible. In order to attempt to address these parallel I/O limitations, we will investigate the use the Adaptable IO System (ADIOS) [LZL+10] to improve I/O performance, while maintaining flexibility for a variety of IO options, such MPI IO, POSIX IO. This system is developed at ORNL and other collaborating institutions, and is being tested extensively on Jaguar-pf. Simulation code being developed on these systems will also use ADIOS to output the data thereby making it easier for other systems, such as ours, to process that data.

Mascarenhas, Ajith Arthur; Pebay, Philippe Pierre

2011-07-01T23:59:59.000Z

54

Black Americans reduce the racial IQ gap: Evidence from standardization samples  

E-Print Network (OSTI)

the University of Virginia for helpful comment. 2 It is often asserted that blacks have made no IQ gains on whites, despite relative environmental gains, and that this adds credibility to the case that the black/white IQ gap has genetic origins. Until recently, there have been no adequate data to measure black IQ trends. We analyze data from nine standardization samples for four major tests of cognitive ability. These suggest that blacks have gained 5 or 6 IQ points on non-Hispanic whites between 1972 and 2002. Gains have been fairly uniform across the entire range of black cognitive ability. Philippe Rushton and Arthur Jensen (2005) state that the IQ difference between black and white Americans stands at 1.1 standard deviations (SDs) and is as large today as it was nearly 100 years ago. No one really knows the history of the black/white gap. Estimates for 1917 and 1943 are based on military data subject to a host of biases. Estimates since 1945 are based almost entirely on averaging studies, none of which compare nationally representative samples taking the same test administered at two different times (Herrnstein & Murray, 1994). Flynn (1987) analyzed military data and found that blacks

T. Dickens; James R. Flynn; Acknowledgements Rebecca Vichniac

2006-01-01T23:59:59.000Z

55

High-performance file I/O in Java : existing approaches and bulk I/O extensions.  

Science Conference Proceedings (OSTI)

There is a growing interest in using Java as the language for developing high-performance computing applications. To be successful in the high-performance computing domain, however, Java must not only be able to provide high computational performance, but also high-performance I/O. In this paper, we first examine several approaches that attempt to provide high-performance I/O in Java - many of which are not obvious at first glance - and evaluate their performance on two parallel machines, the IBM SP and the SGI Origin2000. We then propose extensions to the Java I/O library that address the deficiencies in the Java I/O API and improve performance dramatically. The extensions add bulk (array) I/O operations to Java, thereby removing much of the overhead currently associated with array I/O in Java. We have implemented the extensions in two ways: in a standard JVM using the Java Native Interface (JNI) and in a high-performance parallel dialect of Java called Titanium. We describe the two implementations and present performance results that demonstrate the benefits of the proposed extensions.

Bonachea, D.; Dickens, P.; Thakur, R.; Mathematics and Computer Science; Univ. of California at Berkeley; Illinois Institute of Technology

2001-07-01T23:59:59.000Z

56

The IQ-wall and IQ-station -- harnessing our collective intelligence to realize the potential of ultra-resolution and immersive visualization  

Science Conference Proceedings (OSTI)

We present a pair of open-recipe, affordably-priced, easy-to-integrate, and easy-to-use visualization systems. The IQ-wall is an ultra-resolution tiled display wall that scales up to 24 screens with a single PC. The IQ-station is a semi-immersive display system that utilizes commodity stereoscopic displays, lower cost tracking systems, and touch overlays. These systems have been designed to support a wide range of research, education, creative activities, and information presentations. They were designed to work equally well as stand-alone installations or as part of a larger distributed visualization ecosystem. We detail the hardware and software components of these systems, describe our deployments and experiences in a variety of research lab and university environments, and share our insights for effective support and community development.

Eric A. Wernert; William R. Sherman; Chris Eller; David Reagan; Patrick D. Beard; Eric T. Whiting; Patrick O'Leary

2012-03-01T23:59:59.000Z

57

Hf-Ir (Hafnium - Iridium)  

Science Conference Proceedings (OSTI)

Hf-Ir crystallographic data...Hf-Ir crystallographic data Phase Composition, wt% Ir Pearson symbol Space group (βHf) 0 to ~10.5 cI 2 Im m (αHf) 0 to ~1.5 hP 2 P 6 3 / mmc Hf 2 Ir ~28 to 35.0 cF 96 Fd m Hf 5 Ir 3 39.3 hP 16 P 6 3 / mcm HfIr 51.9 to 59 o ** � HfIr 3 76 to 82 cP 4 Pm m (Ir) ~91 to 100 cF 4 Fm m...

58

U-138: Cisco IOS IPSec IKE Unspecified Denial of Service Vulnerability |  

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

8: Cisco IOS IPSec IKE Unspecified Denial of Service 8: Cisco IOS IPSec IKE Unspecified Denial of Service Vulnerability U-138: Cisco IOS IPSec IKE Unspecified Denial of Service Vulnerability April 2, 2012 - 7:00am Addthis PROBLEM: A vulnerability has been reported in Cisco IOS, which can be exploited by malicious people to cause a DoS (Denial of Service). PLATFORM: Cisco IOS XE 2.1.x Cisco IOS XE 2.2.x Cisco IOS XE 2.3.x Cisco IOS XE 2.4.x Cisco IOS XE 2.5.x Cisco IOS XE 2.6.x Cisco IOS XE 3.1.x Cisco IOS XE 3.3.x ABSTRACT: The IKEv1 feature of Cisco IOS Software contains a vulnerability that could allow an unauthenticated, remote attacker to cause a reload of an affected device. REFERENCE LINKS: Vendor Advisory Secunia Advisory SA48607 CVE-2012-0381 iMPACT ASSESSMENT: High discussion: The March 28, 2012, Cisco IOS Software Security Advisory bundled

59

I/O Performance of Virtualized Cloud Environments  

SciTech Connect

The scientific community is exploring the suitability of cloud infrastructure to handle High Performance Computing (HPC) applications. The goal of Magellan, a project funded through DOE ASCR, is to investigate the potential role of cloud computing to address the computing needs of the Department of Energy?s Office of Science, especially for mid-range computing and data-intensive applications which are not served through existing DOE centers today. Prior work has shown that applications with significant communication orI/O tend to perform poorly in virtualized cloud environments. However, there is a limited understanding of the I/O characteristics in virtualized cloud environments. This paper will present our results in benchmarking the I/O performance over different cloud and HPC platforms to identify the major bottlenecks in existing infrastructure. We compare the I/O performance using IOR benchmark on two cloud platforms - Amazon and Magellan. We analyze the performance of different storage options available, different instance types in multiple availability zones. Finally, we perform large-scale tests in order to analyze the variability in the I/O patterns over time and region. Our results highlight the overhead and variability in I/O performance on both public and private cloud solutions. Our results will help applications decide between the different storage options enabling applications to make effective choices.

Ghoshal, Devarshi; Canon, Shane; Ramakrishnan, Lavanya

2011-11-03T23:59:59.000Z

60

NERSC and HDF Group Optimize HDF5 Library to Improve I/O Performance  

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

and HDF Group Optimize HDF5 Library to Improve IO Performance NERSC and HDF Group Optimize HDF5 Library to Improve IO Performance June 28, 2010 A common complaint among air...

Note: This page contains sample records for the topic "io ir iq" 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

Characterizing and predicting the I/O performance of HPC applications using a parameterized synthetic benchmark  

Science Conference Proceedings (OSTI)

The unprecedented parallelism of new supercomputing platforms poses tremendous challenges to achieving scalable performance for I/O intensive applications. Performance assessments using traditional I/O system and component benchmarks are difficult to ...

Hongzhang Shan; Katie Antypas; John Shalf

2008-11-01T23:59:59.000Z

62

I/O Clustering in Design Cost and Performance Optimization for Flip-Chip Design  

Science Conference Proceedings (OSTI)

Input-output (I/O) placement has always been a concern in modern integrated circuit design. Due to flip-chip technology, I/O can be placed throughout the whole chip without long wires from the periphery of the chip. However, because of I/O placement ... Keywords: Chip-package co-design, flip-chip design, input–output (I/O) planning, signal integrity

Hung-Ming Chen; I-Min Liu; M. D.F. Wong

2006-11-01T23:59:59.000Z

63

ROMIO: A High-Performance, Portable MPI-IO Implementation  

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

ROMIO: A High-Performance, Portable MPI-IO Implementation ROMIO: A High-Performance, Portable MPI-IO Implementation Overview Note: The version of ROMIO described on this page is an old one. We haven't released newer versions of ROMIO as independent packages for a while; they were included as part of MPICH2 and MPICH-1. You can get the latest version of ROMIO when you download MPICH2 or MPICH-1. ROMIO is a high-performance, portable implementation of MPI-IO, the I/O chapter in MPI-2. Version 1.2.5.1 of ROMIO (January 2003) is freely available. The new features in this version are listed here. ROMIO runs on at least the following machines: IBM SP; Intel Paragon; HP Exemplar; SGI Origin2000; Cray T3E; NEC SX-4; other symmetric multiprocessors from HP, SGI, DEC, Sun, and IBM; and networks of workstations (Sun, SGI, HP, IBM, DEC, Linux, and FreeBSD). Supported file

64

Towards an energy-aware scientific I/O interface  

Science Conference Proceedings (OSTI)

Intelligently switching energy saving modes of CPUs, NICs and disks is mandatory to reduce the energy consumption.Hardware and operating system have a limited perspective of future performance demands, thus automatic control is suboptimal. However, it ... Keywords: ADIOS, Energy efficiency, Performance analysis, Performance optimization, Scientific I/O API

Julian M. Kunkel; Timo Minartz; Michael Kuhn; Thomas Ludwig

2012-11-01T23:59:59.000Z

65

I/O performance of virtualized cloud environments  

Science Conference Proceedings (OSTI)

The scientific community is exploring the suitability of cloud infrastructure to handle High Performance Computing (HPC) applications. The goal of Magellan, a project funded through DOE ASCR, is to investigate the potential role of cloud computing to ... Keywords: I/O benchmarking, cloud, virtual environments

Devarshi Ghoshal; Richard Shane Canon; Lavanya Ramakrishnan

2011-11-01T23:59:59.000Z

66

Efficient Parallel I/O in Community Atmosphere Model (CAM)  

Science Conference Proceedings (OSTI)

Century-long global climate simulations at high resolutions generate large amounts of data in a parallel architecture. Currently, the community atmosphere model (CAM), the atmospheric component of the NCAR community climate system model (CCSM), uses ... Keywords: CAM, climate modeling, index reshuffle, parallel I/O, parallel netCDF

Yu-Heng Tseng; Chris Ding

2008-05-01T23:59:59.000Z

67

Advanced I/O for large-scale scientific applications.  

SciTech Connect

As scientific simulations scale to use petascale machines and beyond, the data volumes generated pose a dual problem. First, with increasing machine sizes, the careful tuning of IO routines becomes more and more important to keep the time spent in IO acceptable. It is not uncommon, for instance, to have 20% of an application's runtime spent performing IO in a 'tuned' system. Careful management of the IO routines can move that to 5% or even less in some cases. Second, the data volumes are so large, on the order of 10s to 100s of TB, that trying to discover the scientifically valid contributions requires assistance at runtime to both organize and annotate the data. Waiting for offline processing is not feasible due both to the impact on the IO system and the time required. To reduce this load and improve the ability of scientists to use the large amounts of data being produced, new techniques for data management are required. First, there is a need for techniques for efficient movement of data from the compute space to storage. These techniques should understand the underlying system infrastructure and adapt to changing system conditions. Technologies include aggregation networks, data staging nodes for a closer parity to the IO subsystem, and autonomic IO routines that can detect system bottlenecks and choose different approaches, such as splitting the output into multiple targets, staggering output processes. Such methods must be end-to-end, meaning that even with properly managed asynchronous techniques, it is still essential to properly manage the later synchronous interaction with the storage system to maintain acceptable performance. Second, for the data being generated, annotations and other metadata must be incorporated to help the scientist understand output data for the simulation run as a whole, to select data and data features without concern for what files or other storage technologies were employed. All of these features should be attained while maintaining a simple deployment for the science code and eliminating the need for allocation of additional computational resources.

Klasky, Scott (Oak Ridge National Laboratory, Oak Ridge, TN); Schwan, Karsten (Georgia Institute of Technology, Atlanta, GA); Oldfield, Ron A.; Lofstead, Gerald F., II (Georgia Institute of Technology, Atlanta, GA)

2010-01-01T23:59:59.000Z

68

ISOBAR hybrid compression-I/O interleaving for large-scale parallel I/O optimization  

Science Conference Proceedings (OSTI)

Current peta-scale data analytics frameworks suffer from a significant performance bottleneck due to an imbalance between their enormous computational power and limited I/O bandwidth. Using data compression schemes to reduce the amount of I/O activity ... Keywords: high performance computing, hybrid interleaving, i/o, isobar, lossless compression, staging

Eric R. Schendel; Saurabh V. Pendse; John Jenkins; David A. Boyuka, II; Zhenhuan Gong; Sriram Lakshminarasimhan; Qing Liu; Hemanth Kolla; Jackie Chen; Scott Klasky; Robert Ross; Nagiza F. Samatova

2012-06-01T23:59:59.000Z

69

Towards I/O analysis of HPC systems and a generic architecture to collect access patterns  

Science Conference Proceedings (OSTI)

In high-performance computing applications, a high-level I/O call will trigger activities on a multitude of hardware components. These are massively parallel systems supported by huge storage systems and internal software layers. Their complex interplay ... Keywords: Causality tree, I/O analysis, I/O path

Marc C. Wiedemann; Julian M. Kunkel; Michaela Zimmer; Thomas Ludwig; Michael Resch; Thomas Bönisch; Xuan Wang; Andriy Chut; Alvaro Aguilera; Wolfgang E. Nagel; Michael Kluge; Holger Mickler

2013-05-01T23:59:59.000Z

70

An application-level parallel I/O library for Earth system models  

Science Conference Proceedings (OSTI)

We describe the design and implementation of an application-level parallel I/O (PIO) library for the reading and writing of distributed arrays to several common scientific data formats. PIO provides the flexibility to control the number of I/O tasks ... Keywords: Earth System Modeling, Parallel I/O, memory efficient, netCDF, parallel computing

John M. Dennis; Jim Edwards; Ray Loy; Robert Jacob; Arthur A. Mirin; Anthony P. Craig; Mariana Vertenstein

2012-02-01T23:59:59.000Z

71

U-121: Apple iOS Bugs Let Remote Users Execute Arbitrary Code, Conduct  

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

21: Apple iOS Bugs Let Remote Users Execute Arbitrary Code, 21: Apple iOS Bugs Let Remote Users Execute Arbitrary Code, Conduct Cross-Site Scripting Attacks, and Obtain Potentially Sensitive Information U-121: Apple iOS Bugs Let Remote Users Execute Arbitrary Code, Conduct Cross-Site Scripting Attacks, and Obtain Potentially Sensitive Information March 9, 2012 - 7:00am Addthis PROBLEM: Apple iOS Bugs Let Remote Users Execute Arbitrary Code, Conduct Cross-Site Scripting Attacks, and Obtain Potentially Sensitive Information PLATFORM: Apple iOS Version(s): prior to 5.1 ABSTRACT: Multiple vulnerabilities were reported in Apple iOS. reference LINKS: SecurityTracker Alert ID: 1026774 Apple Security Updates About the security content of iOS 5.1 Software Update CVE-2012-0641, CVE-2012-0642, CVE-2012-0643, CVE-2011-3453, CVE-2012-0644,

72

U-269: Cisco IOS Intrusion Prevention System DNS Processing Bug Lets Remote  

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

9: Cisco IOS Intrusion Prevention System DNS Processing Bug 9: Cisco IOS Intrusion Prevention System DNS Processing Bug Lets Remote Users Deny Service U-269: Cisco IOS Intrusion Prevention System DNS Processing Bug Lets Remote Users Deny Service September 27, 2012 - 4:07am Addthis PROBLEM: Cisco IOS Intrusion Prevention System DNS Processing Bug Lets Remote Users Deny Service PLATFORM: Devices configured with Cisco IOS IPS are affected ABSTRACT: A vulnerability was reported in Cisco IOS. reference LINKS: SecurityTracker Alert ID: 1027580 Cisco Security Advisory CVE-2012-3950 IMPACT ASSESSMENT: Medium Discussion: A vulnerability was reported in Cisco IOS. A remote user can cause denial of service conditions. A remote user can send specially crafted (but legitimate) DNS packets through the target device to cause the device to

73

U-269: Cisco IOS Intrusion Prevention System DNS Processing Bug Lets Remote  

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

9: Cisco IOS Intrusion Prevention System DNS Processing Bug 9: Cisco IOS Intrusion Prevention System DNS Processing Bug Lets Remote Users Deny Service U-269: Cisco IOS Intrusion Prevention System DNS Processing Bug Lets Remote Users Deny Service September 27, 2012 - 4:07am Addthis PROBLEM: Cisco IOS Intrusion Prevention System DNS Processing Bug Lets Remote Users Deny Service PLATFORM: Devices configured with Cisco IOS IPS are affected ABSTRACT: A vulnerability was reported in Cisco IOS. reference LINKS: SecurityTracker Alert ID: 1027580 Cisco Security Advisory CVE-2012-3950 IMPACT ASSESSMENT: Medium Discussion: A vulnerability was reported in Cisco IOS. A remote user can cause denial of service conditions. A remote user can send specially crafted (but legitimate) DNS packets through the target device to cause the device to

74

Poster: a scalable two-phase parallel I/O library with application to a large scale subsurface simulator  

Science Conference Proceedings (OSTI)

This poster describes the development of a highly scalable application layer parallel I/O library (ASCEM-IO) for scientific applications. This library was envisioned to leverage our earlier I/O optimization experience to build a scalable general purpose ... Keywords: high performance computing, parallel I/O

Sarat Sreepathi; Vamsi Sripathi; Glenn Hammond; Richard Mills; G. Kumar Mahinthakumar

2011-11-01T23:59:59.000Z

75

RESULTS OF RADIOLOGICAL I'IEASUREMENTS HIGHT{AYS 18 AI.ID IO4 IN NIAGARA  

Office of Legacy Management (LM)

9s' 9s' RESULTS OF RADIOLOGICAL I'IEASUREMENTS HIGHT{AYS 18 AI.ID IO4 IN NIAGARA az76 rl//.ry' ORNL/RASA.85/ 40 TAKEN AT JUNCTION FALLS, NEH YORK Accesr to the information in thit rcport ir limiled to tho!' inOllateO on tho dl3tribution li3t and to OePartment ot Encrgy and Oepartmcnt ol Enotgy Gontracton This report was prepared as an account of work sponsored by an agency of the United States Government. Neitherth€ U nited StatesGovernment norany agency thereof, nor any of their employees, makes any warranty, express or implied' or assumes any legal liability or responsibility for the accuracy, completenessi or usefulness of any information, apparatus, product, or,process disclosed, or represents that its usewould not inlringe privately owned rights" Reference herein

76

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Office of Legacy Management (LM)

r' r' ( g-.] ic' fz .; w .fl ! : L ' ..j : i ?- z -2"" . 2,-3X-~ Aw23-t 11, 1949 J c. s. ?.%omic ?zaru ccm3ission 7-t i-~n,~-;ra-& 3&-p.Cz' ;"ica P. ' 3. 30x 3 Eacsrs 17, lIaw York :. , ::; /. 1 httetii OP J xl-. P, 3. 2gp C+~t~Sil;lsXl t ?~~$Tly~lf .t: GA.3 L?wjpnaJiQn Of p-3&7:2-Liop 9.0";:7~+50 s' , -ir ,.,,3 iashlla+im it i3 our da3irs 20 be rslia-T.73 of _"\L:t&?T --:wzk&ili* of the SC1298 ' _ _ Zj31Wf end i~i3sio~~31.3 rsskeri31ii izxLi.c~~t& S' ;az&;-d -D~YX-C.I o-Ada - 451 g3ac SyT,kd jl-J$; 3.xi.da - 2% p3 I :&at a 1 a azqi?L;3 3 - ' T-44 pi3. 3 ,LS oxid-\ 3aqr1.93 aar9 ~z;cc?33a~jr la 5.x0 st?%zl*hl~iao- ::>a of In'se-3' -J*-y chs=iical r9tag;P,sta d.ili::d fn cm2 sxlgtit3sl -.- -n4A..*

77

VisIO: enabling interactive visualization of ultra-scale, time-series data via high-bandwidth distributed I/O systems  

Science Conference Proceedings (OSTI)

Petascale simulations compute at resolutions ranging into billions of cells and write terabytes of data for visualization and analysis. Interactive visuaUzation of this time series is a desired step before starting a new run. The I/O subsystem and associated network often are a significant impediment to interactive visualization of time-varying data; as they are not configured or provisioned to provide necessary I/O read rates. In this paper, we propose a new I/O library for visualization applications: VisIO. Visualization applications commonly use N-to-N reads within their parallel enabled readers which provides an incentive for a shared-nothing approach to I/O, similar to other data-intensive approaches such as Hadoop. However, unlike other data-intensive applications, visualization requires: (1) interactive performance for large data volumes, (2) compatibility with MPI and POSIX file system semantics for compatibility with existing infrastructure, and (3) use of existing file formats and their stipulated data partitioning rules. VisIO, provides a mechanism for using a non-POSIX distributed file system to provide linear scaling of 110 bandwidth. In addition, we introduce a novel scheduling algorithm that helps to co-locate visualization processes on nodes with the requested data. Testing using VisIO integrated into Para View was conducted using the Hadoop Distributed File System (HDFS) on TACC's Longhorn cluster. A representative dataset, VPIC, across 128 nodes showed a 64.4% read performance improvement compared to the provided Lustre installation. Also tested, was a dataset representing a global ocean salinity simulation that showed a 51.4% improvement in read performance over Lustre when using our VisIO system. VisIO, provides powerful high-performance I/O services to visualization applications, allowing for interactive performance with ultra-scale, time-series data.

Mitchell, Christopher J [Los Alamos National Laboratory; Ahrens, James P [Los Alamos National Laboratory; Wang, Jun [UCF

2010-10-15T23:59:59.000Z

78

NETL: IRS Tax Credit Program  

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

Solicitations & Business Opportunities IRS Tax Credit Program The Department of Energy's National Energy Technology Laboratory (NETL) is collaborating with the Internal Revenue Service (IRS) to evaluate applications for Tax Credits under Section 1307 of the Energy Policy Act of 2005, and the Emergency Economic Stabilization Act of 2008, per instruction in the Treasury and IRS Announcement 2010-56, which can be found at: http://www.irs.gov/irb/2010-39_IRB/ar09.html or http://www.irs.gov/pub/irs-drop/a-10-56.pdf Specifically, NETL will be evaluating and providing certifications of feasibility for advanced coal and gasification projects consistent with energy policy goals (“DOE certification”). To facilitate the review process, NETL has established this website to receive and respond to questions from prospective applicants regarding the Notices. NETL will post responses to questions or groups of similar questions.

79

U-016: Cisco IOS Software HTTP Service Loading Denial of Service  

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

16: Cisco IOS Software HTTP Service Loading Denial of Service 16: Cisco IOS Software HTTP Service Loading Denial of Service Vulnerability U-016: Cisco IOS Software HTTP Service Loading Denial of Service Vulnerability October 21, 2011 - 9:00am Addthis PROBLEM: Cisco IOS Software HTTP Service Loading Denial of Service Vulnerability . PLATFORM: Cisco IOS Software ABSTRACT: An unauthenticated, remote attacker could exploit this vulnerability to cause a targeted device to stop responding, resulting in a DoS condition. reference LINKS: CISCO Security Intelligence Operations IntelliShield ID: 24436 CVE-2011-2586 IMPACT ASSESSMENT: Medium Discussion: Cisco IOS Software contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on a targeted device. The vulnerability is due to improper

80

T-611: Cisco IOS OCSP Revoked Certificate Security Issue | Department of  

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

1: Cisco IOS OCSP Revoked Certificate Security Issue 1: Cisco IOS OCSP Revoked Certificate Security Issue T-611: Cisco IOS OCSP Revoked Certificate Security Issue April 27, 2011 - 2:07am Addthis PROBLEM: A security issue has been reported in Cisco IOS, which can be exploited by malicious people to bypass certain security restrictions. The security issue is caused due to an error in the OCSP functionality and can lead to a revoked certificate being successfully authenticated. PLATFORM: Cisco IOS 15.0, 15.1 Operating System ABSTRACT: The PKI functionality in Cisco IOS 15.0 and 15.1 does not prevent permanent caching of certain public keys, which allows remote attackers to bypass authentication and have unspecified other impact by leveraging an IKE peer relationship in which a key was previously valid but later revoked, aka Bug

Note: This page contains sample records for the topic "io ir iq" 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

V-015: Apple iOS Bugs Let Remote Users Execute Arbitrary Code, Local Users  

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

5: Apple iOS Bugs Let Remote Users Execute Arbitrary Code, 5: Apple iOS Bugs Let Remote Users Execute Arbitrary Code, Local Users Bypass the Screen Lock, and Applications Obtain Kernel Address Information V-015: Apple iOS Bugs Let Remote Users Execute Arbitrary Code, Local Users Bypass the Screen Lock, and Applications Obtain Kernel Address Information November 2, 2012 - 6:00am Addthis PROBLEM: Apple iOS Bugs Let Remote Users Execute Arbitrary Code, Local Users Bypass the Screen Lock, and Applications Obtain Kernel Address Information PLATFORM: Apple iOS prior to 6.0.1 ABSTRACT: Three vulnerabilities were reported in Apple iOS. REFERENCE LINKS: Apple Article: HT5567 SecurityTracker Alert ID: 1027716 Bugtraq ID: 56363 CVE-2012-3748 CVE-2012-3749 CVE-2012-3750 IMPACT ASSESSMENT: High DISCUSSION: A remote user can create specially crafted HTML that, when loaded by the

82

T-676: Apple iOS Certificate Chain Validation Flaw Lets Certain Remote  

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

6: Apple iOS Certificate Chain Validation Flaw Lets Certain 6: Apple iOS Certificate Chain Validation Flaw Lets Certain Remote Users Access or Modify SSL/TLS Sessions T-676: Apple iOS Certificate Chain Validation Flaw Lets Certain Remote Users Access or Modify SSL/TLS Sessions July 26, 2011 - 1:06am Addthis PROBLEM: A vulnerability was reported in Apple iOS. A remote user with the ability to conduct a man-in-the-middle attack can access or modify SSL/TLS sessions. PLATFORM: iOS 4.2.5 through 4.2.9 for iPhone 4 (CDMA) iOS 3.0 through 4.3.4 for iPhone 3GS and iPhone 4 (GSM) iOS 3.1 through 4.3.4 for iPod touch (3rd generation) and later iOS 3.2 through 4.3.4 for iPad ABSTRACT: Apple iOS Certificate Chain Validation Flaw Lets Certain Remote Users Access or Modify SSL/TLS Sessions. reference LINKS: SecurityTracker Alert ID: 1025837

83

User Interfaces in iOS and Windows Phone: a comparison.  

E-Print Network (OSTI)

??This term paper contains a comparison between iOS and Windows Phone, regarding especially the user interface. Chapter 1 deals with a brief description of the… (more)

Gandin, Silvia

2013-01-01T23:59:59.000Z

84

U-016: Cisco IOS Software HTTP Service Loading Denial of Service...  

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

Cisco IOS Software contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on a targeted device. The...

85

V-080: Apple iOS Multiple Vulnerabilities | Department of Energy  

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

0: Apple iOS Multiple Vulnerabilities 0: Apple iOS Multiple Vulnerabilities V-080: Apple iOS Multiple Vulnerabilities January 30, 2013 - 12:56am Addthis PROBLEM: Apple iOS Multiple Vulnerabilities PLATFORM: Apple iOS 6.x for iPhone 3GS and later Apple iOS for iPad 6.x Apple iOS for iPod touch 6.x ABSTRACT: Two security issues and multiple vulnerabilities have been reported in Apple iOS REFERENCE LINKS: Article: HT5642 APPLE-SA-2013-01-28-1 iOS 6.1 Software Update Secunia Advisory SA52002 CVE-2011-3058 CVE-2012-2619 CVE-2012-2824 CVE-2012-2857 CVE-2012-2889 CVE-2012-3606 CVE-2012-3607 CVE-2012-3621 CVE-2012-3632 CVE-2012-3687 CVE-2012-3701 CVE-2013-0948 CVE-2013-0949 CVE-2013-0950 CVE-2013-0951 CVE-2013-0952 CVE-2013-0953 CVE-2013-0954 CVE-2013-0955 CVE-2013-0956 CVE-2013-0958 CVE-2013-0959 CVE-2013-0962 CVE-2013-0963 CVE-2013-0964

86

T-676: Apple iOS Certificate Chain Validation Flaw Lets Certain Remote  

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

76: Apple iOS Certificate Chain Validation Flaw Lets Certain 76: Apple iOS Certificate Chain Validation Flaw Lets Certain Remote Users Access or Modify SSL/TLS Sessions T-676: Apple iOS Certificate Chain Validation Flaw Lets Certain Remote Users Access or Modify SSL/TLS Sessions July 26, 2011 - 1:06am Addthis PROBLEM: A vulnerability was reported in Apple iOS. A remote user with the ability to conduct a man-in-the-middle attack can access or modify SSL/TLS sessions. PLATFORM: iOS 4.2.5 through 4.2.9 for iPhone 4 (CDMA) iOS 3.0 through 4.3.4 for iPhone 3GS and iPhone 4 (GSM) iOS 3.1 through 4.3.4 for iPod touch (3rd generation) and later iOS 3.2 through 4.3.4 for iPad ABSTRACT: Apple iOS Certificate Chain Validation Flaw Lets Certain Remote Users Access or Modify SSL/TLS Sessions. reference LINKS: SecurityTracker Alert ID: 1025837

87

Scheduling Tertiary I/O in Database Applications  

E-Print Network (OSTI)

We study the problem of scheduling I/O requests for tertiary storage libraries to improve performance. The focus is on scheduling policies that process all requests on a loaded medium before unloading it. For single drive settings an efficient algorithm that produces optimal schedules is developed. For multiple drives the problem is shown to be NP-Complete. Efficient and effective heuristics are presented for the multiple drives case. The scheduling policies developed achieve significant performance gains over more naive first come first server policies. The study is general enough to be applicable to any storage library handling removable media, such as tapes or optical disks.

Sunil Prabhakar; Divyakant Agrawal; Amr El Abbadi; Ambuj Singh

1997-01-01T23:59:59.000Z

88

Scalable I/O Systems via Node-Local Storage: Approaching 1 TB/sec File I/O  

Science Conference Proceedings (OSTI)

In the race to PetaFLOP-speed supercomputing systems, the increase in computational capability has been accompanied by corresponding increases in CPU count, total RAM, and storage capacity. However, a proportional increase in storage bandwidth has lagged behind. In order to improve system reliability and to reduce maintenance effort for modern large-scale systems, system designers have opted to remove node-local storage from the compute nodes. Today's multi-TeraFLOP supercomputers are typically attached to parallel file systems that provide only tens of GBs/s of I/O bandwidth. As a result, such machines have access to much less than 1GB/s of I/O bandwidth per TeraFLOP of compute power, which is below the generally accepted limit required for a well-balanced system. In a many ways, the current I/O bottleneck limits the capabilities of modern supercomputers, specifically in terms of limiting their working sets and restricting fault tolerance techniques, which become critical on systems consisting of tens of thousands of components. This paper resolves the dilemma between high performance and high reliability by presenting an alternative system design which makes use of node-local storage to improve aggregate system I/O bandwidth. In this work, we focus on the checkpointing use-case and present an experimental evaluation of the Scalable Checkpoint/Restart (SCR) library, a new adaptive checkpointing library that uses node-local storage to significantly improve the checkpointing performance of large-scale supercomputers. Experiments show that SCR achieves unprecedented write speeds, reaching a measured 700GB/s of aggregate bandwidth on 8,752 processors and an estimated 1TB/s for a similarly structured machine of 12,500 processors. This corresponds to a speedup of over 70x compared to the bandwidth provided by the 10GB/s parallel file system the cluster uses. Further, SCR can adapt to an environment in which there is wide variation in performance or capacity among the individual node-local storage elements.

Bronevetsky, G; Moody, A

2009-08-18T23:59:59.000Z

89

Syllabus_IOs_IR_444_Fall_2011.doc D. L. Tehindrazanarivelo Page 1 of 4 BOSTON UNIVERSITY GENEVA PROGRAM  

E-Print Network (OSTI)

as nuclear weapons states by the 45Non-Proliferation Treaty of 1968. Listing them in the 46order in which into effect in 1963 25 between the USA, the USSR, and the UK. Known as the 26 Limited Test Ban Treaty (LTBT both these countries came to abide by its terms. 31 The concept of a Comprehensive Test Ban Treaty 32

Guenther, Frank

90

Towards the protection of industrial control systems: conclusions of a vulnerability analysis of profinet IO  

Science Conference Proceedings (OSTI)

The trend of introducing common information and communication technologies into automation control systems induces besides many benefits new security risks to industrial plants and critical infrastructures. The increasing use of Internet protocols in ... Keywords: anomaly detection, industrial control systems, intrusion detection, profinet IO attacks, profinet IO vulnerabilities

Andreas Paul, Franka Schuster, Hartmut König

2013-07-01T23:59:59.000Z

91

An introduction to ios programming: from getting the sdk to submitting your first app, 1 edition  

Science Conference Proceedings (OSTI)

Learn the steps necessary for building your first iOS app. With this introductory video course, experienced iOS developer Alasdair Allan walks you through the entire process, from downloading the developer tools to submitting your finished app to Apple's ...

Allan Alasdair

2011-05-01T23:59:59.000Z

92

Visual analysis of I/O system behavior for high-end computing  

Science Conference Proceedings (OSTI)

As supercomputers grow ever larger, so too do application run times and data requirements. The operational patterns of modern parallel I/O systems are far too complex to allow for a direct analysis of their trace logs. Several visualization methods have ... Keywords: information visualization, parallel I/O, performance analysis tools

Christopher Muelder; Carmen Sigovan; Kwan-Liu Ma; Jason Cope; Sam Lang; Kamil Iskra; Pete Beckman; Robert Ross

2011-06-01T23:59:59.000Z

93

Memory-conscious collective I/O for extreme scale HPC systems  

Science Conference Proceedings (OSTI)

Upcoming extreme scale platforms are expected to have millions of nodes with hundreds to thousands of small cores for each node. The continuing decrease in memory capacity per core and the increasing disparity between core count and off-chip memory bandwidth ... Keywords: collective I/O, extreme scale system, high performance computing, many-core architecture, parallel I/O

Yin Lu, Yong Chen, Yu Zhuang, Rajeev Thakur

2013-06-01T23:59:59.000Z

94

Evaluating I/O aware network management for scientific workflows on networked clouds  

Science Conference Proceedings (OSTI)

This paper presents a performance evaluation of scientific workflows on networked cloud systems with particular emphasis on evaluating the effect of provisioned network bandwidth on application I/O performance. The experiments were run on ExoGENI, a ... Keywords: I/O performance, networked clouds, performance evaluation, performance monitoring, scientific workflows

Anirban Mandal, Paul Ruth, Ilya Baldin, Yufeng Xin, Claris Castillo, Mats Rynge, Ewa Deelman

2013-11-01T23:59:59.000Z

95

WorkOut: I/O workload outsourcing for boosting RAID reconstruction performance  

Science Conference Proceedings (OSTI)

User I/O intensity can significantly impact the performance of on-line RAID reconstruction due to contention for the shared disk bandwidth. Based on this observation, this paper proposes a novel scheme, called WorkOut (I/O Workload Outsourcing), to significantly ...

Suzhen Wu; Hong Jiang; Dan Feng; Lei Tian; Bo Mao

2009-02-01T23:59:59.000Z

96

Accelerating I/O Forwarding in IBM Blue Gene/P Systems  

Science Conference Proceedings (OSTI)

Current leadership-class machines suffer from a significant imbalance between their computational power and their I/O bandwidth. I/O forwarding is a paradigm that attempts to bridge the increasing performance and scalability gap between the compute and ...

Venkatram Vishwanath; Mark Hereld; Kamil Iskra; Dries Kimpe; Vitali Morozov; Michael E. Papka; Robert Ross; Kazutomo Yoshii

2010-11-01T23:59:59.000Z

97

Histogram-based I/O optimization for visualizing large-scale data  

Science Conference Proceedings (OSTI)

We present an I/O optimization method for parallel volume rendering based on visibility and spatial locality. The combined metric is used to organize the file layout of the dataset on a parallel file system. This reduces the number of small, noncontiguous ... Keywords: histogram parallel I/O

Yuan Hong; Tom Peterka; Han-Wei Shen

2009-11-01T23:59:59.000Z

98

Scientific data services: a high-performance I/O system with array semantics  

Science Conference Proceedings (OSTI)

As high-performance computing approaches exascale, the existing I/O system design is having trouble keeping pace in both performance and scalability. We propose to address this challenge by adopting database principles and techniques in parallel I/O ... Keywords: data services, database systems, file systems

Kesheng Wu; Surendra Byna; Doron Rotem; Arie Shoshani

2011-11-01T23:59:59.000Z

99

Android and iOS users' differences concerning security and privacy  

Science Conference Proceedings (OSTI)

We compare Android and iOS users according to their demographic differences, security and privacy awareness, and reported behavior when installing apps. We present an exploratory study based on an online survey with more than 700 German students and ... Keywords: android, ios, iphone, personal data, privacy awareness, security awareness, smartphone

Zinaida Benenson; Freya Gassmann; Lena Reinfelder

2013-04-01T23:59:59.000Z

100

Benchmarking parallel i/o performance for a large scale scientific application on the teragrid  

Science Conference Proceedings (OSTI)

This paper is a report on experiences in benchmarking I/O performance on leading computational facilities on the NSF TeraGrid network with a large scale scientific application. Instead of focusing only on the raw file I/O bandwidth provided by different ...

Frank Löffler; Jian Tao; Gabrielle Allen; Erik Schnetter

2009-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "io ir iq" 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

U-036: Apple iOS Bugs Let Remote Users Execute Arbitrary Code | Department  

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

6: Apple iOS Bugs Let Remote Users Execute Arbitrary Code 6: Apple iOS Bugs Let Remote Users Execute Arbitrary Code U-036: Apple iOS Bugs Let Remote Users Execute Arbitrary Code November 15, 2011 - 8:00am Addthis PROBLEM: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and Obtain Information and Let Local Users Bypass Authentication. PLATFORM: iOS 3.0 through 5.0 for iPhone 3GS iPhone 4 and iPhone 4S iOS 3.1 through 5.0 for iPod touch (3rd generation) and later iOS 3.2 through 5.0 for iPad, iOS 4.3 through 5.0 for iPad 2 ABSTRACT: A remote user can create content that, when loaded by the target user, will execute arbitrary code on or obtain potentially sensitive information from the target user's system. reference LINKS: Apple Security Article: HT5052 Apple Product Security SecurityTracker Alert ID: 1026311 IMPACT ASSESSMENT:

102

U-180: Cisco IOS XR Packet Processing Flaw | Department of Energy  

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

80: Cisco IOS XR Packet Processing Flaw 80: Cisco IOS XR Packet Processing Flaw U-180: Cisco IOS XR Packet Processing Flaw May 31, 2012 - 7:00am Addthis PROBLEM: A vulnerability was reported in Cisco IOS XR. PLATFORM: Version(s): XR 4.0.3, 4.0.4, 4.1.0, 4.1.1, 4.1.2, and 4.2.0 ABSTRACT: A remote user can cause denial of service conditions. Reference Links: Security Tracker ID 1027104 CVE-2012-2488 Vendor Advisory IMPACT ASSESSMENT: High Discussion: A remote user can send a specially crafted packet to the target device to cause the route processor to be unable to transmit route processor-based protocol packets to the fabric. IP traffic transiting the device cannot trigger the flaw. Cisco IOS XR is affected on the Cisco 9000 Series Aggregation Services Routers (ASR) Route Switch Processor (RSP440) and the Cisco Carrier Routing

103

Publication Number: NIST Interagency Report (IR) 7298 ...  

Science Conference Proceedings (OSTI)

... Publication Date: 05/31/2013 • Final Publication: http://nvlpubs.nist.gov/nistpubs/ ir/2013/NIST.IR.7298r2.pdf • Related Information on CSRC: ...

2013-06-13T23:59:59.000Z

104

Reducing Concurrency Bottlenecks in Parallel I/O Workloads  

SciTech Connect

To enable high performance parallel checkpointing we introduced the Parallel Log Structured File System (PLFS). PLFS is middleware interposed on the file system stack to transform concurrent writing of one application file into many non-concurrently written component files. The promising effectiveness of PLFS makes it important to examine its performance for workloads other than checkpoint capture, notably the different ways that state snapshots may be later read, to make the case for using PLFS in the Exascale I/O stack. Reading a PLFS file involved reading each of its component files. In this paper we identify performance limitations on broader workloads in an early version of PLFS, specifically the need to build and distribute an index for the overall file, and the pressure on the underlying parallel file system's metadata server, and show how PLFS's decomposed components architecture can be exploited to alleviate bottlenecks in the underlying parallel file system.

Manzanares, Adam C. [Los Alamos National Laboratory; Bent, John M. [Los Alamos National Laboratory; Wingate, Meghan [Los Alamos National Laboratory

2011-01-01T23:59:59.000Z

105

I/O Congestion Avoidance via Routing and Object Placement  

SciTech Connect

As storage systems get larger to meet the the demands of petascale systems, careful planning must be applied to avoid congestion points and extract the maximum performance. In addition, the large size of the data sets generated by such systems makes it desirable for all compute resources in a center to have common access to this data without needing to copy it to each machine. This paper describes a method of placing I/O close to the storage nodes to minimize contention on Cray's SeaStar2+ network, and extends it to a routed Lustre configuration to gain the same benefits when running against a center-wide file system. Our experiments show performance improvements for both direct attached and routed file systems.

Dillow, David A [ORNL; Shipman, Galen M [ORNL; Oral, H Sarp [ORNL; Zhang, Zhe [ORNL

2011-01-01T23:59:59.000Z

106

Efficient data IO for a Parallel Global Cloud Resolving Model  

Science Conference Proceedings (OSTI)

Execution of a Global Cloud Resolving Model (GCRM) at target resolutions of 2-4 km will generate, at a minimum, 10s of Gigabytes of data per variable per snapshot. Writing this data to disk without creating a serious bottleneck in the execution of the GCRM code while also supporting efficient post-execution data analysis is a significant challenge. This paper discusses an Input/Output (IO) application programmer interface (API) for the GCRM that efficiently moves data from the model to disk while maintaining support for community standard formats, avoiding the creation of very large numbers of files, and supporting efficient analysis. Several aspects of the API will be discussed in detail. First, we discuss the output data layout which linearizes the data in a consistent way that is independent of the number of processors used to run the simulation and provides a convenient format for subsequent analyses of the data. Second, we discuss the flexible API interface that enables modelers to easily add variables to the output stream by specifying where in the GCRM code these variables are located and to flexibly configure the choice of outputs and distribution of data across files. The flexibility of the API is designed to allow model developers to add new data fields to the output as the model develops and new physics is added and also provides a mechanism for allowing users of the GCRM code itself to adjust the output frequency and the number of fields written depending on the needs of individual calculations. Third, we describe the mapping to the NetCDF data model with an emphasis on the grid description. Fourth, we describe our messaging algorithms and IO aggregation strategies that are used to achieve high bandwidth while simultaneously writing concurrently from many processors to shared files. We conclude with initial performance results.

Palmer, Bruce J.; Koontz, Annette S.; Schuchardt, Karen L.; Heikes, Ross P.; Randall, David A.

2011-11-26T23:59:59.000Z

107

V-165: Cisco WebEx for iOS Certificate Validation Flaw Lets Remote Users  

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

65: Cisco WebEx for iOS Certificate Validation Flaw Lets Remote 65: Cisco WebEx for iOS Certificate Validation Flaw Lets Remote Users Spoof the Server V-165: Cisco WebEx for iOS Certificate Validation Flaw Lets Remote Users Spoof the Server May 28, 2013 - 12:46am Addthis PROBLEM: Cisco WebEx for iOS Certificate Validation Flaw Lets Remote Users Spoof the Server PLATFORM: Cisco WebEx for iOS 4.1, Other versions may also be affected. ABSTRACT: A vulnerability was reported in Cisco WebEx for iOS. REFERENCE LINKS: Cisco SecurityTracker Alert ID: 1028592 Secunia Advisory SA51412 CVE-2012-6399 IMPACT ASSESSMENT: Medium DISCUSSION: A security issue in Cisco WebEx for iOS can be exploited by malicious people to conduct spoofing attacks. The security issue is caused due to the application not properly verifying the server SSL certificate. This can be exploited to e.g. spoof the server

108

File System Monitoring as a Window Into User I/O Requirements  

E-Print Network (OSTI)

As part of the 2008-2009 upgrade of the Franklin Cray XT at the National Energy Research Scientific Computing center, its I/O resources were more than doubled. The extra bandwidth reduced contention for I/O resources and those resources were split into two file systems, /scratch and /scratch2, each with more bandwidth than the original /scratch. In an effort to improve responsiveness, NERSC consulting encouraged ”big I/O ” jobs to use /scratch2. File system monitoring data indicate that this division of the NERSC workload has been largely successful, and we present several useful characterizations of the two I/O workloads that resulted. This feedback for both the users and the center enhances NERSC’s ability to manage and provision Franklin’s I/O subsytem as well as to plan for future I/O requirements. The workload characterization presented here also lays the groundwork for the development of a rigorous methodology for measuring the impact of I/O on system utilization, which we outline in Future Work.

Andrew Uselton; Katie Antypas; Daniela Ushizima; Jeffrey Sukharev

2010-01-01T23:59:59.000Z

109

NERSC and HDF Group Optimize HDF5 Library to Improve I/O Performance  

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

and HDF Group and HDF Group Optimize HDF5 Library to Improve I/O Performance NERSC and HDF Group Optimize HDF5 Library to Improve I/O Performance June 28, 2010 A common complaint among air travelers on short trips is that the time it takes to get in and out of the airplane and airports can be as long as the flight itself. In computer terms, that's a classic input/output (I/O) problem. Supercomputer users sometimes face a similar problem: the computer tears through the calculations with amazing speed, but the time it takes to write the resulting data to disk ends up slowing down the whole job. There are several layers of software that deal with I/O on high performance computing (HPC) systems. The filesystem software, such as Lustre or GPFS, is closest to the hardware and deals with the physical access and storage

110

A Case Study for Scientific I/O: Improving the FLASH Astrophysics Code  

E-Print Network (OSTI)

Argonne, IL 60439 {allcock,harms}@alcf.anl.gov ABSTRACT Today's top high performance computing systems run Computing Facility (ALCF) demon- strates storage provisioning that allows I/O performance to scale

111

DriverGuard: a fine-grained protection on I/O flows  

Science Conference Proceedings (OSTI)

Most commodity peripheral devices and their drivers are geared to achieve high performance with security functions being opted out. The absence of security measures invites attacks on the I/O data and consequently threats those applications feeding on ...

Yueqiang Cheng; Xuhua Ding; Robert H. Deng

2011-09-01T23:59:59.000Z

112

A Workload Characterization Study of I/O Intensive Parallel Programs  

E-Print Network (OSTI)

Characterizing the I/O requirements of parallel applications that manipulate huge amounts of data, such as scientific codes, is critical to the achievement of good application performance and to the effective use of parallel systems. In this paper we formulate a compositional stochastic model of the behavior of I/O intensive scientific applications, which can be applied at various granularity levels of characterization. Based on the observation of the interaction of CPU and I/O activity in a set of scientific codes, we exercise the stochastic model. The model is in excellent agreement with experimental data in the set of the examined codes. For the model to be used for performance prediction, we also propose a set of functional forms for forecasting the scalability of computation and I/O components of an application. The complexity of the functional form adopted affects the accuracy of performance prediction. 1 Introduction In recent years, parallel scientific applications that manipu...

Emilia Rosti; Giuseppe Serazzi; Evgenia Smirni; Mark S. Squillante

1998-01-01T23:59:59.000Z

113

U-068:Linux Kernel SG_IO ioctl Bug Lets Local Users Gain Elevated  

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

8:Linux Kernel SG_IO ioctl Bug Lets Local Users Gain Elevated 8:Linux Kernel SG_IO ioctl Bug Lets Local Users Gain Elevated Privileges U-068:Linux Kernel SG_IO ioctl Bug Lets Local Users Gain Elevated Privileges December 23, 2011 - 8:45am Addthis PROBLEM: Linux Kernel SG_IO ioctl Bug Lets Local Users Gain Elevated Privileges PLATFORM: Red Hat Enterprise Linux Desktop (v. 6) Red Hat Enterprise Linux HPC Node (v. 6) Red Hat Enterprise Linux Server (v. 6) Red Hat Enterprise Linux Server AUS (v. 6.2) Red Hat Enterprise Linux Server EUS (v. 6.2.z) Red Hat Enterprise Linux Workstation (v. 6) ABSTRACT: A local privileged user on the guest operating system can obtain elevated privileges on the target system. reference LINKS: Red Hat kernel security and bug fix update SecurityTracker Alert ID: 1026453 SecurityTracker Alert ID: 1026454

114

and IR-4 Project Programs  

E-Print Network (OSTI)

In both tables, erroneous industry direct effects were reported that do not impact the overall findings of this report. The direct effect numbers previously reported in Tables 4 and 5 were not used in the calculations of overall impacts. The corrected tables in this document do reflect the estimates, as described in the text of the original report. October 22, 2012Executive Summary The Interregional Research Project Number 4 (IR-4 Project) has been a pivotal resource in providing U.S. residents a plentiful and low-cost array of vegetables, fruits, berries and tree nuts since 1963 by facilitating the registration of newer, lower-toxic pest control products with the EPA for application on specialty crops. Specialty crop growers often are at a disadvantage relative to program crop growers in having access to effective crop loss mitigation options against common agricultural pests. Specialty crops make up about 40 percent of the total value of U.S. crop production and include both food and ornamental crops that afford insufficient economic incentive for a pesticide companies to support initial or continuing registration of commercial pesticides. As all agricultural uses of pesticides are regulated by the EPA, each use must be registered or exempted before applied. Such registration is costly, making only registration for uses on any but large acreage crops unprofitable for pesticide companies. The IR-4 Project leverages resources to pursue registration for such uses. Along with supporting the use of reduced-toxicity pesticides, with its Biological and Organic Support program, the IR-4 Project is able to direct necessary resources to meet the U.S. goal of substantially decreasing the environmental and health impacts of agricultural pesticide use following the passage of the Food Quality Protection Act of 1996. This report assesses the economic impact of the IR-4 Project on the U.S. economy. The assessment assumes a long-run presence of the IR-4 Project, such that relevant decision makers recognize and

Steven R. Miller; Andrea Leschewski

2011-01-01T23:59:59.000Z

115

Energy-Conscious, Deterministic I/O Device Scheduling In Hard . . .  

E-Print Network (OSTI)

Energy consumption is an important design parameter for embedded and portable systems. Software-controlled (or dynamic) power management (DPM) has emerged as an attractive alternative to inflexible hardware solutions. However, DPM via I/O device scheduling for real-time systems has not been considered before. We present an online I/O device scheduler, which we call lowenergy device scheduler (LEDES), for hard real-time systems that reduces the energy consumption of I/O devices. LEDES takes as inputs a predetermined task schedule and a device-usage list for each task and it generates a sequence of sleep/working states for each device such that the energy consumption of the device is minimized. It also guarantees that real-time constraints are not violated. We then present a more general I/O device scheduler, which we call multistate constrained low-energy scheduler (MUSCLES), for handling I/O devices with multiple power states. MUSCLES generates a sequence of power states for each I/O device while guaranteeing that real-time constraints are not violated. We present several realistic case studies to show that LEDES and MUSCLES reduce energy consumption significantly for hard real-time systems.

Vishnu Swaminathan; Krishnendu Chakrabarty

2003-01-01T23:59:59.000Z

116

IOrchestrator: improving the performance of multi-node I/O systems via inter-server coordination  

SciTech Connect

A cluster of I/O nodes and a parallel file system are often used to provide high-throughput I/O service to a parallel compute cluster. To exploit I/O parallelism parallel file systems stripe file data across the I/O nodes. While this practice is effective in serving asynchronous requests, it may break individual program's spatial locality, which can seriously degrade I/O performance when the I/O nodes concurrently serve synchronous requests from multiple I/O-intensive programs. In this paper we propose a scheme, Orchestrator, to improve the I/O performance of multi-I/O-node systems by orchestrating I/O services among programs when such inter-I/O-node coordination is dynamically determined to be cost effective. We have implemented IOrchestrator in the PVFS2 parallel file system. Our experiments with representative parallel benchmarks show that IOrchestrator can significantly improve I/O performance - by up to a factor of 2.5 - delivered by a cluster of I/O nodes servicing concurrently-running parallel programs. Notably, we have not observed any scenarios in which the use of IOrchestrator causes significant performance degradation.

Davis, Marion Kei [Los Alamos National Laboratory; Zhang, Xuechen [WAYNE STATE UNIV; Jiang, Song [WAYNE STATE UNIV.

2010-01-01T23:59:59.000Z

117

Fotovoltinio modulio su koncentratoriumi projektavimas ir tyrimas.  

E-Print Network (OSTI)

??Baigiamajame magistro darbe suprojektuotos ir pagamintos dviej? r?ši? šviesos koncentratorin?s sistemos: jungtin? parabolin? ir sistema su Frenelio l?šiu. Atlikta saul?s element? efektyvumo analiz?, išnagrin?tos švies?… (more)

Gaili?nas,; Paulius

2013-01-01T23:59:59.000Z

118

Publication Number: NIST Interagency Report (IR) 7298 ...  

Science Conference Proceedings (OSTI)

... Title: Glossary of Key Information Security Terms ... Interagency Report (IR) 7298, Revision 2, Glossary of Key Information Security Terms. ...

2013-06-13T23:59:59.000Z

119

Layout-Aware I/O Scheduling for Terabits Data Movement  

Science Conference Proceedings (OSTI)

Many science facilities, such as the Department of Energy s Leadership Computing Facilities and experimental facilities including the Spallation Neutron Source, Stanford Linear Accelerator Center, and Advanced Photon Source, produce massive amounts of experimental and simulation data. These data are often shared among the facilities and with collaborating institutions. Moving large datasets over the wide- area network (WAN) is a major problem inhibiting collaboration. Next- generation, terabit-networks will help alleviate the problem, however, the parallel storage systems on the end-system hosts at these institutions can become a bottleneck for terabit data movement. The parallel storage system (PFS) is shared by simulation systems, experimental systems, analysis and visualization clusters, in addition to wide-area data movers. These competing uses often induce temporary, but significant, I/O load imbalances on the storage system, which impact the performance of all the users. The problem is a serious concern because some resources are more expensive (e.g. super computers) or have time-critical deadlines (e.g. experimental data from a light source), but parallel file systems handle all requests fairly even if some storage servers are under heavy load. This paper investigates the problem of competing workloads accessing the parallel file system and how the performance of wide-area data movement can be improved in these environments. First, we study the I/O load imbalance problems using actual I/O performance data collected from the Spider storage system at the Oak Ridge Leadership Computing Facility. Second, we present I/O optimization solutions with layout-awareness on end-system hosts for bulk data movement. With our evaluation, we show that our I/O optimization techniques can avoid the I/O congested disk groups, improving storage I/O times on parallel storage systems for terabit data movement.

Kim, Youngjae [ORNL] [ORNL; Atchley, Scott [ORNL] [ORNL; Vallee, Geoffroy R [ORNL] [ORNL; Shipman, Galen M [ORNL] [ORNL

2013-01-01T23:59:59.000Z

120

Geoterminio šildymo ekonominis ir techninis ?vertinimas.  

E-Print Network (OSTI)

??Žem?s šilumos siurbli? sistemos surenka žem?s šilum?, dažniausiai vertikaliu U formos gr?žinio šilumokai?iu. U formos gr?žinio šilumokai?io našumas priklauso nuo šilumini? žem?s savybi?, taip pat… (more)

Tamošaitis,; Donatas

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "io ir iq" 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

Raising the IQ in full-text searching via intelligent querying  

SciTech Connect

Current Information Retrieval (IR) technologies allow for efficient access to relevant information, provided that user selected query terms coincide with the specific linguistical choices made by the authors whose works constitute the text-base. Therefore, the challenge is to enhance the limited searching capability of state-of-the-practice IR. This can be done either with augmented clients that overcome current server searching deficiencies, or with added capabilities that can augment searching algorithms on the servers. The technology being investigated is that of deductive databases, with a set of new techniques called cooperative answering. This technology utilizes semantic networks to allow for navigation between possible query search term alternatives. The augmented search terms are passed to an IR engine and the results can be compared. The project utilizes the OSTI Environment, Safety and Health Thesaurus to populate the domain specific semantic network and the text base of ES&H related documents from the Facility Profile Information Management System as the domain specific search space.

Kero, R.; Russell, L.; Swietlik, C. [Argonne National Lab., IL (United States); Morgan, C. [USDOE/Environment, Safety and Health (EH-5) (United States); Clayton, C.; Dunlap, K. [USDOE Office of Scientific and Technical Information, Oak Ridge, TN (United States)

1994-11-01T23:59:59.000Z

122

V-115: Apple iOS Bugs Let Local Users Gain Elevated Privileges | Department  

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

5: Apple iOS Bugs Let Local Users Gain Elevated Privileges 5: Apple iOS Bugs Let Local Users Gain Elevated Privileges V-115: Apple iOS Bugs Let Local Users Gain Elevated Privileges March 20, 2013 - 12:08am Addthis PROBLEM: Apple iOS Bugs Let Local Users Gain Elevated Privileges PLATFORM: Version(s): prior to 6.1.3 ABSTRACT: Several vulnerabilities were reported in Apple iOS REFERENCE LINKS: Apple security Article: HT1222 SecurityTracker Alert ID: 1028314 CVE-2013-0977 CVE-2013-0978 CVE-2013-0979 CVE-2013-0981 IMPACT ASSESSMENT: High DISCUSSION: A local user can exploit a flaw in the handling of Mach-O executable files with overlapping segments to execute unsigned code on the target system [CVE-2013-0977]. A local user can exploit a flaw in the ARM prefetch abort handling to determine the address of structures in the kernel [CVE-2013-0978].

123

BASIN BLAN CO BLAN CO S OT ERO IGNAC IO-BLANCO AZ TEC BALLAR  

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

BOE Reserve Class BOE Reserve Class No 2001 reserves 0.1 - 10 MBOE 10.1 - 100 MBOE 100.1 - 1,000 MBOE 1,000.1- 10,000 MBOE 10,000.1 - 100,000 MBOE > 100,000 MBOE Basin Outline AZ UT NM CO 1 2 Index Map for 2 Paradox-San Juan Panels 2001 Reserve Summary for All Paradox-San Juan Basin Fields Total Total Total Number Liquid Gas BOE of Reserves Reserves Reserves Fields (Mbbl) (MMcf) (Mbbl) Paradox-San Juan 250 174,193 20,653,622 3,616,464 Basin CO NM IGNAC IO-BLANCO IGNAC IO-BLANCO IGNAC IO-BLANCO IGNAC IO-BLANCO IGNAC IO-BLANCO BASIN BASIN BLAN CO BLAN CO BASIN BASIN BASIN BASIN BASIN BASIN BISTI BAL LAR D BASIN BISTI BLA NCO S OT ERO BAL LAR D LIND RITH W BASIN BLA NCO BLA NCO S BLA NCO S TAPAC ITO GAVIL AN BASIN BLA NCO The mapped oil and gas field boundary outlines were created by the Reserves and Production Division, Office of Oil and Gas, Energy Information Administration pursuant to studies required by

124

U-165: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and Spoof  

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

5: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and 5: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and Spoof Address Bar URLs U-165: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and Spoof Address Bar URLs May 9, 2012 - 7:00am Addthis PROBLEM: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and Spoof Address Bar URLs PLATFORM: prior to 5.1.1; iPhone 3GS, iPhone 4, iPhone 4S, iPod touch (3rd generation) and later, iPad, iPad 2 ABSTRACT: Two vulnerabilities were reported in Apple iOS. A remote user can cause arbitrary code to be executed on the target user's system. A remote user can spoof the address bar URL. reference LINKS: SecurityTracker Alert ID: 1027028 CVE-2012-0672 CVE-2012-0674 IMPACT ASSESSMENT: Medium Discussion: A remote user can create a specially crafted file that, when loaded by the

125

BASIN BLAN CO BLAN CO S OT ERO IGNAC IO-BLANCO AZ TEC BALLAR  

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

Liquids Reserve Class Liquids Reserve Class No 2001 liquids reserves 0.1 - 10 Mbbl 10.1 - 100 Mbbl 100.1 - 1,000 Mbbl 1,000.1- 10,000 Mbbl 10,000.1 - 100,000 Mbbl Basin Outline AZ UT NM CO 1 2 Index Map for 2 Paradox-San Juan Panels 2001 Reserve Summary for All Paradox-San Juan Basin Fields Total Total Total Number Liquid Gas BOE of Reserves Reserves Reserves Fields (Mbbl) (MMcf) (Mbbl) Paradox-San Juan 250 174,193 20,653,622 3,616,464 Basin CO NM IGNAC IO-BLANCO IGNAC IO-BLANCO IGNAC IO-BLANCO IGNAC IO-BLANCO IGNAC IO-BLANCO BASIN BASIN BLAN CO BLAN CO BASIN BASIN BASIN BASIN BASIN BASIN BISTI BAL LAR D BASIN BISTI BLA NCO S OT ERO BAL LAR D LIND RITH W BASIN BLA NCO BLA NCO S BLA NCO S TAPAC ITO GAVIL AN BASIN BLA NCO The mapped oil and gas field boundary outlines were created by the Reserves and Production Division, Office of Oil and Gas, Energy Information Administration pursuant to studies required by

126

U-165: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and Spoof  

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

5: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and 5: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and Spoof Address Bar URLs U-165: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and Spoof Address Bar URLs May 9, 2012 - 7:00am Addthis PROBLEM: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and Spoof Address Bar URLs PLATFORM: prior to 5.1.1; iPhone 3GS, iPhone 4, iPhone 4S, iPod touch (3rd generation) and later, iPad, iPad 2 ABSTRACT: Two vulnerabilities were reported in Apple iOS. A remote user can cause arbitrary code to be executed on the target user's system. A remote user can spoof the address bar URL. reference LINKS: SecurityTracker Alert ID: 1027028 CVE-2012-0672 CVE-2012-0674 IMPACT ASSESSMENT: Medium Discussion: A remote user can create a specially crafted file that, when loaded by the

127

An evaluation of Java's I/O capabilities for high-performance computing.  

SciTech Connect

Java is quickly becoming the preferred language for writing distributed applications because of its inherent support for programming on distributed platforms. In particular, Java provides compile-time and run-time security, automatic garbage collection, inherent support for multithreading, support for persistent objects and object migration, and portability. Given these significant advantages of Java, there is a growing interest in using Java for high-performance computing applications. To be successful in the high-performance computing domain, however, Java must have the capability to efficiently handle the significant I/O requirements commonly found in high-performance computing applications. While there has been significant research in high-performance I/O using languages such as C, C++, and Fortran, there has been relatively little research into the I/O capabilities of Java. In this paper, we evaluate the I/O capabilities of Java for high-performance computing. We examine several approaches that attempt to provide high-performance I/O--many of which are not obvious at first glance--and investigate their performance in both parallel and multithreaded environments. We also provide suggestions for expanding the I/O capabilities of Java to better support the needs of high-performance computing applications.

Dickens, P. M.; Thakur, R.

2000-11-10T23:59:59.000Z

128

BASIN BLAN CO BLAN CO S OT ERO IGNAC IO-BLANCO AZ TEC BALLAR  

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

Gas Reserve Class Gas Reserve Class No 2001 gas reserves 0.1 - 10 MMCF 10.1 - 100 MMCF 100.1 - 1,000 MMCF 1,000.1- 10,000 MMCF 10,000.1 - 100,000 MMCF > 100,000 MMCF Basin Outline AZ UT NM CO 1 2 Index Map for 2 Paradox-San Juan Panels 2001 Reserve Summary for All Paradox-San Juan Basin Fields Total Total Total Number Liquid Gas BOE of Reserves Reserves Reserves Fields (Mbbl) (MMcf) (Mbbl) Paradox-San Juan 250 174,193 20,653,622 3,616,464 Basin CO NM IGNAC IO-BLANCO IGNAC IO-BLANCO IGNAC IO-BLANCO IGNAC IO-BLANCO IGNAC IO-BLANCO BASIN BASIN BLAN CO BLAN CO BASIN BASIN BASIN BASIN BASIN BASIN BISTI BAL LAR D BASIN BISTI BLA NCO S OT ERO BAL LAR D LIND RITH W BASIN BLA NCO BLA NCO S BLA NCO S TAPAC ITO GAVIL AN BASIN BLA NCO The mapped oil and gas field boundary outlines were created by the Reserves and Production Division, Office of Oil and Gas, Energy Information Administration pursuant to studies required by

129

Carbon nanotube IR detectors (SV)  

SciTech Connect

Sandia National Laboratories (Sandia) and Lockheed Martin Corporation (LMC) collaborated to (1) evaluate the potential of carbon nanotubes as channels in infrared (IR) photodetectors; (2) assemble and characterize carbon nanotube electronic devices and measure the photocurrent generated when exposed to infrared light;(3) compare the performance of the carbon nanotube devices with that of traditional devices; and (4) develop and numerically implement models of electronic transport and opto-electronic behavior of carbon nanotube infrared detectors. This work established a new paradigm for photodetectors.

Leonard, F. L.

2012-03-01T23:59:59.000Z

130

Increase in IO Bandwidth to Enhance Future Understanding of Climate Change  

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

Increase in IO Increase in IO Bandwidth to Enhance Future Understanding of Climate Change Increase in IO Bandwidth to Enhance Future Understanding of Climate Change August 6, 2009 vorticity+context_2.jpg The large data set sizes generated by the GCRM require new analysis and visualization capabilities with parallel processing and rendering capabilities. This 3d plot of the vorticity isosurfaces was developed using the VisIt visualization tool, a general purpose 3D visualization tool with a parallel distributed architecture, which is being extended to support the geodesic grid used by the GCRM. This work was performed in collaboration with Prabhat at NERSC. Results: Researchers at Pacific Northwest National Laboratory (PNNL)-in collaboration with the National Energy Research Scientific Computing Center

131

Extending the POSIX I/O interface: a parallel file system perspective.  

SciTech Connect

The POSIX interface does not lend itself well to enabling good performance for high-end applications. Extensions are needed in the POSIX I/O interface so that high-concurrency HPC applications running on top of parallel file systems perform well. This paper presents the rationale, design, and evaluation of a reference implementation of a subset of the POSIX I/O interfaces on a widely used parallel file system (PVFS) on clusters. Experimental results on a set of micro-benchmarks confirm that the extensions to the POSIX interface greatly improve scalability and performance.

Vilayannur, M.; Lang, S.; Ross, R.; Klundt, R.; Ward, L.; Mathematics and Computer Science; VMWare, Inc.; SNL

2008-12-11T23:59:59.000Z

132

H5hut: A High-Performance I/O Library for Particle-based Simulations  

SciTech Connect

Particle-based simulations running on large high-performance computing systems over many time steps can generate an enormous amount of particle- and field-based data for post-processing and analysis. Achieving high-performance I/O for this data, effectively managing it on disk, and interfacing it with analysis and visualization tools can be challenging, especially for domain scientists who do not have I/O and data management expertise. We present the H5hut library, an implementation of several data models for particle-based simulations that encapsulates the complexity of HDF5 and is simple to use, yet does not compromise performance.

Howison, Mark; Adelmann, Andreas; Bethel, E. Wes; Gsell, Achim; Oswald, Benedikt; Prabhat,

2010-09-24T23:59:59.000Z

133

FlexFetch: A History-Aware Scheme for I/O Energy Saving in Mobile Computing , Song Jiang2  

E-Print Network (OSTI)

FlexFetch: A History-Aware Scheme for I/O Energy Saving in Mobile Computing Feng Chen1 , Song Jiang, energy consumption caused by I/O operations becomes increasingly large. In a per- vasive computing be adaptively selected to achieve maximum energy reduction. To this end, we propose a profile-based I

Jiang, Song

134

Topology-aware data movement and staging for I/O acceleration on Blue Gene/P supercomputing systems  

Science Conference Proceedings (OSTI)

There is growing concern that I/O systems will be hard pressed to satisfy the requirements of future leadership-class machines. Even current machines are found to be I/O bound for some applications. In this paper, we identify existing performance bottlenecks ...

Venkatram Vishwanath; Mark Hereld; Vitali Morozov; Michael E. Papka

2011-11-01T23:59:59.000Z

135

IRS Actions on Decisions | Data.gov  

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

digital@treasury.gov Unique Identifier TREAS-4430 Public Access Level public Data Dictionary http:www.irs.govapppicklistlistactionsOnDecisions.html Data Download URL...

136

IRS Internal Revenue Bulletin | Data.gov  

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

digital@treasury.gov Unique Identifier TREAS-4431 Public Access Level public Data Dictionary http:www.irs.govapppicklistlistinternalRevenueBulletins.html Data Download URL...

137

Function Test Framework for Testing IO-Blocks in a Model-Based Rapid Prototyping Development  

E-Print Network (OSTI)

Function Test Framework for Testing IO-Blocks in a Model-Based Rapid Prototyping Development -- Testing and verification are important methods for gaining confidence in the reliability of a software changing development cycles or that is tar- geted at many platforms. In this paper we present a test

138

Enabling event tracing at leadership-class scale through I/O forwarding middleware  

Science Conference Proceedings (OSTI)

Event tracing is an important tool for understanding the performance of parallel applications. As concurrency increases in leadership-class computing systems, the quantity of performance log data can overload the parallel file system, perturbing the ... Keywords: I/O forwarding, atomic append, event tracing

Thomas Ilsche; Joseph Schuchart; Jason Cope; Dries Kimpe; Terry Jones; Andreas Knüpfer; Kamil Iskra; Robert Ross; Wolfgang E. Nagel; Stephen Poole

2012-06-01T23:59:59.000Z

139

Visual Analysis of I/O System Behavior for HighEnd Computing  

E-Print Network (OSTI)

at the Argonne Leadership Computing Facility (ALCF). On the ALCF systems, we use the 40-rack Intrepid Blue Gene network. When tracing applications in the ALCF environment, we set up a temporary PVFS2 storage cluster by the ALCF. The extra compute nodes we al- locate for the I/O software are accessible only by our application

Islam, M. Saif

140

Runtime I/O re-routing + throttling on HPC storage  

Science Conference Proceedings (OSTI)

Massively parallel storage systems are becoming more and more prevalent on HPC systems due to the emergence of a new generation of data-intensive applications. To achieve the level of I/O throughput and capacity that is demanded by data intensive applications, ...

Qing Liu, Norbert Podhorszki, Jeremy Logan, Scott Klasky

2013-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "io ir iq" 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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141

Parallelization and I/O optimization for a 3-D plasma simulation code  

Science Conference Proceedings (OSTI)

LARED-P, a three-dimensional laser plasma electromagnitic simulation code, largely simulates the interaction of intense laser and plasma. It uses partical-in-cell simulation method and needs immense computing resource, one CPU can do nothing about the ... Keywords: I/O performance, data management, numerical simulation, parallelization, plasma, post processing

Hong Chen; Weimin Zheng; Aiqing Zhang

2009-07-01T23:59:59.000Z

142

Semantic-based distributed i/o with the paramedic framework  

Science Conference Proceedings (OSTI)

Many large-scale applications simultaneously rely on multiple resources for efficient execution. For example, such applications may require both large compute and storage resources; however, very few supercomputing centers can provide large quantities ... Keywords: distributed i/o, mpiblast, paramedic

Pavan Balaji; Wuchun Feng; Heshan Lin

2008-06-01T23:59:59.000Z

143

A case study in application I/O on Linux clusters  

Science Conference Proceedings (OSTI)

A critical but often ignored component of system performance is the I/O system. Today's applications demand a great deal from underlying storage systems and software, and both high-performance distributed storage and high level interfaces have been developed ...

Robert Ross; Daniel Nurmi; Albert Cheng; Michael Zingale

2001-11-01T23:59:59.000Z

144

UPPAAL in practice: quantitative verification of a RapidIO network  

Science Conference Proceedings (OSTI)

Packet switched networks are widely used for interconnecting distributed computing platforms. RapidIO (Rapid Input/Output) is an industry standard for packet switched networks to interconnect multiple processor boards. Key performance metrics for these ... Keywords: POOSL, UPPAAL, heuristic, quantitative verification, transformation

Jiansheng Xing; Bart D. Theelen; Rom Langerak; Jaco Van De Pol; Jan Tretmans; J. P. M. Voeten

2010-10-01T23:59:59.000Z

145

AUTI.-IoR(s,: S. A. Colgate, Jean Audouze, and William A. Fowler  

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

AUTI.-IoR(s,: S. A. Colgate, Jean Audouze, and AUTI.-IoR(s,: S. A. Colgate, Jean Audouze, and William A. Fowler SUBMITTED TO: 15th International C o s m i c Ray Conference P l o v d i v , Bulgaria - August 13-26, 1977 \ . NOTICE lhis report WPE prepared as an ac=xmnt of work sponsored by the United Stater Government. Neither the United States nor the United Stater Energy Rcwvch and Cevelopment Administration, nor any of their employees, nor any of their contractors, rubmntracton o r thdr employees, makes any wmanty. ex;res or implied, o r asurns any legal liability or responsibility for the accuracy, eompletcneJs or usefulnea of any information, apparatus, product 01 process disclosed, or repreants that its use would not infringe privately owned rights. _ _ e By acceptance of this article for publication. the

146

Enabling Event Tracing at Leadership-Class Scale through I/O Forwarding Middleware  

Science Conference Proceedings (OSTI)

Event tracing is an important tool for understanding the performance of parallel applications. As concurrency increases in leadership-class computing systems, the quantity of performance log data can overload the parallel file system, perturbing the application being observed. In this work we present a solution for event tracing at leadership scales. We enhance the I/O forwarding system software to aggregate and reorganize log data prior to writing to the storage system, significantly reducing the burden on the underlying file system for this type of traffic. Furthermore, we augment the I/O forwarding system with a write buffering capability to limit the impact of artificial perturbations from log data accesses on traced applications. To validate the approach, we modify the Vampir tracing tool to take advantage of this new capability and show that the approach increases the maximum traced application size by a factor of 5x to more than 200,000 processors.

Ilsche, Thomas [Technische Universitat Dresden; Schuchart, Joseph [Technische Universitat Dresden; Cope, Joseph [Argonne National Laboratory (ANL); Kimpe, Dries [Argonne National Laboratory (ANL); Jones, Terry R [ORNL; Knuepfer, Andreas [Technische Universitat Dresden; Iskra, Kamil [Argonne National Laboratory (ANL); Ross, Robert [Argonne National Laboratory (ANL); Nagel, Wolfgang E. [Technische Universitat Dresden; Poole, Stephen W [ORNL

2012-01-01T23:59:59.000Z

147

Detection of Atomic Chlorine in Io's Atmosphere with HST/GHRS  

E-Print Network (OSTI)

We report the detection of atomic chlorine emissions in the atmosphere of Io using Hubble Space Telescope observations with the Goddard High Resolution Spectrograph (GHRS). The Cl I 1349 A dipole allowed and Cl I] 1386 A forbidden transition multiplets are detected at a signal to noise ratio (SNR) of 6 and 10, respectively, in a combined GHRS spectrum acquired from 1994 through 1996. Oxygen and sulfur emissions are simultaneously detected with the chlorine which allows for self-consistent abundance ratios of chlorine to these other atmospheric species. The disk averaged ratios are: Cl/O = 0.017 +/- 0.008, Cl/S = 0.10 +/- 0.05, and S/O = 0.18 +/- 0.08. We also derive a geometric albedo of 1.0 +/- 0.4 % for Io at 1335 A assuming an SO2 atmospheric column density of 1x10^{16} cm^{-2}.

Feaga, L M; Feldman, P D; Strobel, D F; Feaga, Lori M.; Grath, Melissa A. Mc; Feldman, Paul D.; Strobel, Darrell F.

2004-01-01T23:59:59.000Z

148

Detection of Atomic Chlorine in Io's Atmosphere with HST/GHRS  

E-Print Network (OSTI)

We report the detection of atomic chlorine emissions in the atmosphere of Io using Hubble Space Telescope observations with the Goddard High Resolution Spectrograph (GHRS). The Cl I 1349 A dipole allowed and Cl I] 1386 A forbidden transition multiplets are detected at a signal to noise ratio (SNR) of 6 and 10, respectively, in a combined GHRS spectrum acquired from 1994 through 1996. Oxygen and sulfur emissions are simultaneously detected with the chlorine which allows for self-consistent abundance ratios of chlorine to these other atmospheric species. The disk averaged ratios are: Cl/O = 0.017 +/- 0.008, Cl/S = 0.10 +/- 0.05, and S/O = 0.18 +/- 0.08. We also derive a geometric albedo of 1.0 +/- 0.4 % for Io at 1335 A assuming an SO2 atmospheric column density of 1x10^{16} cm^{-2}.

Lori M. Feaga; Melissa A. McGrath; Paul D. Feldman; Darrell F. Strobel

2004-04-26T23:59:59.000Z

149

IRS General Counsel Memoranda | Data.gov  

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

digital@treasury.gov Unique Identifier TREAS-4432 Public Access Level public Data Dictionary http:www.irs.govfoiaarticle0,,id103756,00.html Data Download URL http:...

150

Minimizing I/O Costs of Multi-Dimensional Queries with BitmapIndices  

Science Conference Proceedings (OSTI)

Bitmap indices have been widely used in scientific applications and commercial systems for processing complex,multi-dimensional queries where traditional tree-based indices would not work efficiently. A common approach for reducing the size of a bitmap index for high cardinality attributes is to group ranges of values of an attribute into bins and then build a bitmap for each bin rather than a bitmap for each value of the attribute. Binning reduces storage costs,however, results of queries based on bins often require additional filtering for discarding it false positives, i.e., records in the result that do not satisfy the query constraints. This additional filtering,also known as ''candidate checking,'' requires access to the base data on disk and involves significant I/O costs. This paper studies strategies for minimizing the I/O costs for ''candidate checking'' for multi-dimensional queries. This is done by determining the number of bins allocated for each dimension and then placing bin boundaries in optimal locations. Our algorithms use knowledge of data distribution and query workload. We derive several analytical results concerning optimal bin allocation for a probabilistic query model. Our experimental evaluation with real life data shows an average I/O cost improvement of at least a factor of 10 for multi-dimensional queries on datasets from two different applications. Our experiments also indicate that the speedup increases with the number of query dimensions.

Rotem, Doron; Stockinger, Kurt; Wu, Kesheng

2006-03-30T23:59:59.000Z

151

IR Spectral Bands and Performance | Open Energy Information  

Open Energy Info (EERE)

2013 DOI Not Provided Check for DOI availability: http:crossref.org Online Internet link for IR Spectral Bands and Performance Citation Chris Douglass. IR Spectral Bands...

152

US-CERT Control System Center Input/Output (I/O) Conceputal Design  

Science Conference Proceedings (OSTI)

This document was prepared for the US-CERT Control Systems Center of the National Cyber Security Division (NCSD) of the Department of Homeland Security (DHS). DHS has been tasked under the Homeland Security Act of 2002 to coordinate the overall national effort to enhance the protection of the national critical infrastructure. Homeland Security Presidential Directive HSPD-7 directs the federal departments to identify and prioritize critical infrastructure and protect it from terrorist attack. The US-CERT National Strategy for Control Systems Security was prepared by the NCSD to address the control system security component addressed in the National Strategy to Secure Cyberspace and the National Strategy for the Physical Protection of Critical Infrastructures and Key Assets. The US-CERT National Strategy for Control Systems Security identified five high-level strategic goals for improving cyber security of control systems; the I/O upgrade described in this document supports these goals. The vulnerability assessment Test Bed, located in the Information Operations Research Center (IORC) facility at Idaho National Laboratory (INL), consists of a cyber test facility integrated with multiple test beds that simulate the nation's critical infrastructure. The fundamental mission of the Test Bed is to provide industry owner/operators, system vendors, and multi-agency partners of the INL National Security Division a platform for vulnerability assessments of control systems. The Input/Output (I/O) upgrade to the Test Bed (see Work Package 3.1 of the FY-05 Annual Work Plan) will provide for the expansion of assessment capabilities within the IORC facility. It will also provide capabilities to connect test beds within the Test Range and other Laboratory resources. This will allow real time I/O data input and communication channels for full replications of control systems (Process Control Systems [PCS], Supervisory Control and Data Acquisition Systems [SCADA], and components). This will be accomplished through the design and implementation of a modular infrastructure of control system, communications, networking, computing and associated equipment, and measurement/control devices. The architecture upgrade will provide a flexible patching system providing a quick ''plug and play''configuration through various communication paths to gain access to live I/O running over specific protocols. This will allow for in-depth assessments of control systems in a true-to-life environment. The full I/O upgrade will be completed through a two-phased approach. Phase I, funded by DHS, expands the capabilities of the Test Bed by developing an operational control system in two functional areas, the Science & Technology Applications Research (STAR) Facility and the expansion of various portions of the Test Bed. Phase II (see Appendix A), funded by other programs, will complete the full I/O upgrade to the facility.

Not Available

2005-02-01T23:59:59.000Z

153

IO2566  

Office of Legacy Management (LM)

566 566 ;;I: :.f;l -5 iii i: i:2 JOSEPH OALIBER, EBQ., RKCEIVKR 513-519 WKBT 20th STREET NEW YORK, NKU YORK April 1, 1993 Former Sites Restoration Division Director U.S. Department of Energy, OR Operations P.O. BOX 2001 Oak Ridge, Tennessee 37831-8723 Ret 513-519 West 20th Street pew York. New York Dear Sir/Madam: Please be advised that pursuant to our remedial action license agreement dated November 30, premises (the t*License8q), 1992 relating to the above I hereby certify to you that the provisions of Ig 2(a) and 2(b) of the License have been fulfilled. Accordingly, we will release the $60,000 escrow we are holding to the former tenant and you are authorized to enter upon the premises pursuant to the terms of the License. Very truly yours, JOSEPH CALIBER, ESQ., RECEIVER

154

Scientific Data Services -- A High-Performance I/O System with Array Semantics  

SciTech Connect

As high-performance computing approaches exascale, the existing I/O system design is having trouble keeping pace in both performance and scalability. We propose to address this challenge by adopting database principles and techniques in parallel I/O systems. First, we propose to adopt an array data model because many scientific applications represent their data in arrays. This strategy follows a cardinal principle from database research, which separates the logical view from the physical layout of data. This high-level data model gives the underlying implementation more freedom to optimize the physical layout and to choose the most effective way of accessing the data. For example, knowing that a set of write operations is working on a single multi-dimensional array makes it possible to keep the subarrays in a log structure during the write operations and reassemble them later into another physical layout as resources permit. While maintaining the high-level view, the storage system could compress the user data to reduce the physical storage requirement, collocate data records that are frequently used together, or replicate data to increase availability and fault-tolerance. Additionally, the system could generate secondary data structures such as database indexes and summary statistics. We expect the proposed Scientific Data Services approach to create a “live” storage system that dynamically adjusts to user demands and evolves with the massively parallel storage hardware.

Wu, Kesheng; Byna, Surendra; Rotem, Doron; Shoshani, Arie

2011-09-21T23:59:59.000Z

155

Dynamic I/O Power Management for Hard Real-time Systems  

E-Print Network (OSTI)

Power consumption is an important design parameter for embedded and portable systems. Software-controlled (or dynamic) power management (DPM) has recently emerged as an attractive alternative to inflexible hardware solutions. DPM for hard real-time systems has received relatively little attention. In particular, energy-driven I/O device scheduling for real-time systems has not been considered before. We present the first online DPM algorithm, which we call Low Energy Device Scheduler (LEDES), for hard realtime systems. LEDES takes as inputs a predetermined task schedule and a device-usage list for each task and it generates a sequence of sleep/working states for each device. It guarantees that real-time constraints are not violated and it also minimizes the energy consumed by the I/O devices used by the task set. LEDES is energy-optimal under the constraint that the start times of the tasks are fixed. We present a case study to show that LEDES can reduce energy consumption by almost 50%. 1

Vishnu Swaminathan; Krishnendu Chakrabarty; S. S. Iyengar

2001-01-01T23:59:59.000Z

156

I/O threads to reduce checkpoint blocking for an electromagnetics solver on Blue Gene/P and Cray XK6  

Science Conference Proceedings (OSTI)

Application-level checkpointing has been one of the most popular techniques to proactively deal with unexpected failures in supercomputers with hundreds of thousands of cores. Unfortunately, this approach results in heavy I/O load and often causes ... Keywords: MPI/pthread, checkpointing, fault tolerance, parallel I/O

Jing Fu; Robert Latham; Misun Min; Christopher D. Carothers

2012-06-01T23:59:59.000Z

157

Broadband Water Vapor Transmission Functions for Atmospheric IR Flux Computations  

Science Conference Proceedings (OSTI)

Transmission functions associated with water vapor molecular line and e-type absorption in the IR spectral regions are presented in the form of simple analytical functions and small tables, from which atmospheric IR fluxes and cooling rates can ...

Ming-Dah Chou

1984-05-01T23:59:59.000Z

158

Topology-aware data movement and staging for I/O acceleration on Blue Gene/P supercomputing systems  

E-Print Network (OSTI)

of the Argonne Leadership Comput- ing Facility, I/O forwarding in BG/P, and a summary of our previous findings for the sys- tem evaluation in this paper. 2.1 Argonne Leadership Computing Facility Figure 1: The Argonne of the Argonne Leadership Computing Facility at Argonne Na- tional Laboratory. This work was supported

159

Coordinating government funding of file system and I/O research through the high end computing university research activity  

Science Conference Proceedings (OSTI)

In 2003, the High End Computing Revitalization Task Force designated file systems and I/O as an area in need of national focus. The purpose of the High End Computing Interagency Working Group (HECIWG) is to coordinate government spending on File Systems ... Keywords: file systems, high end computing, storage

Gary Grider; James Nunez; John Bent; Steve Poole; Rob Ross; Evan Felix

2009-01-01T23:59:59.000Z

160

STAR-Scheduler: A Batch Job Scheduler for Distributed I/O Intensive Applications  

E-Print Network (OSTI)

We present the implementation of a batch job scheduler designed for single-point management of distributed tasks on a multi-node compute farm. The scheduler uses the notion of a meta-job to launch large computing tasks simultaneously on many nodes from a single user command. Job scheduling on specific computing nodes is predicated on the availability of user specified data files co-located with the CPUs where the analysis is meant to take place. Large I/O intensive data analyses may thus be efficiently conducted on multiple CPUs without the limitations implied by finite LAN or WAN bandwidths. Although this Scheduler was developed specifically for the STAR Collaboration at Brookhaven National Laboratory, its design is sufficiently general, it can be adapted to virtually any other data analysis tasks carried out by large scientific collaborations.

V. Mandapaka; C. Pruneau; J. Lauret; S. Zeadally

2004-01-25T23:59:59.000Z

Note: This page contains sample records for the topic "io ir iq" 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

STAR-Scheduler: A Batch Job Scheduler for Distributed I/O Intensive Applications  

E-Print Network (OSTI)

We present the implementation of a batch job scheduler designed for single-point management of distributed tasks on a multi-node compute farm. The scheduler uses the notion of a meta-job to launch large computing tasks simultaneously on many nodes from a single user command. Job scheduling on specific computing nodes is predicated on the availability of user specified data files co-located with the CPUs where the analysis is meant to take place. Large I/O intensive data analyses may thus be efficiently conducted on multiple CPUs without the limitations implied by finite LAN or WAN bandwidths. Although this Scheduler was developed specifically for the STAR Collaboration at Brookhaven National Laboratory, its design is sufficiently general, it can be adapted to virtually any other data analysis tasks carried out by large scientific collaborations.

Mandapaka, V; Lauret, J; Zeadally, S

2004-01-01T23:59:59.000Z

162

Standoff imaging of chemicals using IR spectroscopy  

SciTech Connect

Here we report on a standoff spectroscopic technique for identifying chemical residues on surfaces. A hand-held infrared camera was used in conjunction with a wavelength tunable mid-IR quantum cascade laser (QCL) to create hyperspectral image arrays of a target with an explosive residue on its surface. Spectral signatures of the explosive residue (RDX) were extracted from the hyperspectral image arrays and compared with a reference spectrum. Identification of RDX was achieved for residue concentrations of 20 g per cm2 at a distance of 1.5 m, and for 5 g per cm2 at a distance of 15 cm.

Senesac, Larry R [ORNL; Thundat, Thomas George [ORNL; Morales Rodriguez, Marissa E [ORNL

2011-01-01T23:59:59.000Z

163

IY:ILrnr IR-rl?l'  

Office of Legacy Management (LM)

IY:ILrnr IR-rl?l' IY:ILrnr IR-rl?l' w&m PadmmmTuJ tmml' aIs~#l!REm m-t, - 188kwxm BYI alahard 0. cr*rrror cy- r' , ' .~ -' - -' ^ , /' cs< 4. .c :' ; *. .h,- ' (z&&y .' ,/ ;f. .* &J >l a. L \' P" ,,,' ,.' I * :{' \ !' l t ..b c&~ tf ~ , r ,, r. ,* .;;;., k J ;, b $y$' Lrmprrw)rlt&tmxJ- a@. Frqrr at t&i8 raoLli:.y SC\ daummiI~Luualndr8rr~lfCUIf@@?~~oy-~ d )I t rq ,i .* 1 Virium~~bUrlJlOgarspvlr at ma rdutw. (500 p-4 3) i" 1 ) ,ip" 2. rt A8 - u %I* mm 4almpa~&rnbM Itrr+@# vbrp a** -y ;I11 ~*~~*- miw&mmwlrrwrbsr* ~rSthLtL,ort' tar,da*pcr¶.florllj pi &8~wl~cm@n-~ t#barwatla~r~tOf~. hwrl'r#tarr,urueunUr .--,U-L BirLl#a ofmml -vom. pe a ,Tjm-&,, i L) cc (. a 41 IA.9 #y7 /.& r*-rc * &ah&L- '2 , p-

164

A Lightweight, High-performance I/O Management Package for Data-intensive Computing  

Science Conference Proceedings (OSTI)

Our group has been working with ANL collaborators on the topic â??bridging the gap between parallel file system and local file systemâ?ť during the course of this project period. We visited Argonne National Lab -- Dr. Robert Rossâ??s group for one week in the past summer 2007. We looked over our current project progress and planned the activities for the incoming years 2008-09. The PI met Dr. Robert Ross several times such as HEC FSIO workshop 08, SCâ??08 and SCâ??10. We explored the opportunities to develop a production system by leveraging our current prototype to (SOGP+PVFS) a new PVFS version. We delivered SOGP+PVFS codes to ANL PVFS2 group in 2008.We also talked about exploring a potential project on developing new parallel programming models and runtime systems for data-intensive scalable computing (DISC). The methodology is to evolve MPI towards DISC by incorporating some functions of Google MapReduce parallel programming model. More recently, we are together exploring how to leverage existing works to perform (1) coordination/aggregation of local I/O operations prior to movement over the WAN, (2) efficient bulk data movement over the WAN, (3) latency hiding techniques for latency-intensive operations. Since 2009, we start applying Hadoop/MapReduce to some HEC applications with LANL scientists John Bent and Salman Habib. Another on-going work is to improve checkpoint performance at I/O forwarding Layer for the Road Runner super computer with James Nuetz and Gary Gridder at LANL. Two senior undergraduates from our research group did summer internships about high-performance file and storage system projects in LANL since 2008 for consecutive three years. Both of them are now pursuing Ph.D. degree in our group and will be 4th year in the PhD program in Fall 2011 and go to LANL to advance two above-mentioned works during this winter break. Since 2009, we have been collaborating with several computer scientists (Gary Grider, John bent, Parks Fields, James Nunez, Hsing-Bung Chen, etc) from HPC5 and James Ahrens from Advanced Computing Laboratory in Los Alamos National Laboratory. We hold a weekly conference and/or video meeting on advancing works at two fronts: the hardware/software infrastructure of building large-scale data intensive cluster and research publications. Our group members assist in constructing several onsite LANL data intensive clusters. Two parties have been developing software codes and research papers together using both sidesâ?? resources.

Wang, Jun

2011-06-22T23:59:59.000Z

165

IO6264 OAK RIDGE NATIONAL LABORATORY POST OFFICE BOX 2008 WEMTED Sv MARTIN MARIETTA ENERGY SVPEUS. INC  

Office of Legacy Management (LM)

IO6264 IO6264 OAK RIDGE NATIONAL LABORATORY POST OFFICE BOX 2008 - WEMTED Sv MARTIN MARIETTA ENERGY SVPEUS. INC OAK RIDGE. TENNESSEE 37031 July 16, 1993 Dr. W. A Williams Department of Energy Trevion II Building EM-421 Washington, D. C. 205850002 Dear Dr. Williams: IndcperrdentVerihiatianoftbc~ConditioDofthtOId~~B~gOwnedbytht Gmnite city steel c2ltpmatiw, Gr8nite city, Illinois A team from the Measurement Applications and Development (MAD) group, Oak Ridge National Laboratory (ORNL), at the request of the Department of Energy (DOE) conducted an independent verification of the radiological condition of the old betatron building owned by the Granite City Steel Corporation. The uranium contamination present resulted from the handling of uranium slabs of

166

In P. Kokol, B. Zupan, J. Stare, M. Premik & R. Engelbrecht (Eds), Medical Informatics in Europe (MIE '99), pp. 720-725, IOS Press, Amsterdam  

E-Print Network (OSTI)

(MIE '99), pp. 720-725, IOS Press, Amsterdam TIDE: An Intelligent Home-Based Healthcare Information-Ă -vis the provision of a continuum of personalised home-based healthcare services that emphasise the role

Abidi, Syed Sibte Raza

167

IRS Private Letter Rulings and Technical Advice Memoranda | Data...  

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

digital@treasury.gov Unique Identifier TREAS-4433 Public Access Level public Data Dictionary http:www.irs.govtaxexemptbondarticle0,,id134365,00.html Data Download URL...

168

Modeling and Verifying a Lego Car Using Hybrid I/O Automata  

E-Print Network (OSTI)

We illustrate the application of the hybrid I/O automata framework of Lynch, Segala & Vaandrager by using it to model and analyze the behavior of a simple Lego car with caterpillar treads. We derive constraints on the values of the parameters that occur in our hybrid model that guarantee that the car will always move forward along a black tape, and will never get off the tape or move backward. In order to simplify the correctness proof, we introduce a transition systems that abstracts from the hybrid automaton in a rather drastic manner, but still preserves validity of the correctness properties in which we are interested. Even though our original model does not involve any disturbances, the general parametric analysis of the system allows us to exend our results in a trivial manner to a hybrid model in which several disturbances are allowed (mistakes in measurements of lengths, drift and jitter of the hardware clock, velocity, and distance between the two caterpillar treads).

Ansgar Fehnker; Frits Vaandrager; Miaomiao Zhang

2003-01-01T23:59:59.000Z

169

Faculty of ScienceModeling and Verifying a Lego Car Using Hybrid I/O Automata  

E-Print Network (OSTI)

We illustrate the application of the hybrid I/O automata framework of Lynch, Segala & Vaandrager by using it to model and analyze the behavior of a simple Lego car with caterpillar treads. We derive constraints on the values of the parameters that occur in our hybrid model that guarantee that the car will always move forward along a black tape, and will never get off the tape or move backward. In order to simplify the correctness proof, we introduce a transition systems that abstracts from the hybrid automaton in a rather drastic manner, but still preserves validity of the correctness properties in which we are interested. Even though our original model does not involve any disturbances, the general parametric analysis of the system allows us to exend our results in a trivial manner to a hybrid model in which several disturbances are allowed (mistakes in measurements of lengths, drift and jitter of the hardware clock, velocity, and distance between the two caterpillar treads).

Ansgar FEHNKER; Frits VAANDRAGER; Miaomiao ZHANG; A. Fehnker; F. W. Va; M. Zhang; Ansgar Fehnker; Frits Vaandrager

2003-01-01T23:59:59.000Z

170

Combining compiler and operating system support for energy efficient i/o on embedded platforms  

E-Print Network (OSTI)

Mobile and embedded platforms have experienced dramatic advances in capabilities, largely due to the development of associated peripheral devices for storage and communication. The incorporation of these I/O devices has increased the overall power envelope of these platforms. In fact, system-level power consumption of mobile platforms is often dominated by peripheral devices. Since battery technologies alone have been unable to provide the lifetimes required by many platforms, in order to conserve energy, most devices provide the ability to transition into low power states during idle periods. The resulting energy savings are heavily dependent upon the lengths and number of idle periods experienced by a device. This paper presents an infrastructure designed to take advantage of device low power states by increasing the burstiness of device accesses and idle periods to provide a reduced power profile, and thereby an improvement in battery life. Our approach combines compiler-based source modifications with operating system support to implement a dynamic solution for enhanced energy consumption. We evaluate our infrastructure on an XScale-based embedded platform with a Linux implementation. 1.

Ripal Nathuji

2005-01-01T23:59:59.000Z

171

Testing a Model of IR Radiative Losses: Preprint  

DOE Green Energy (OSTI)

Thermopile pyranometers exhibit IR radiative losses that affect global and diffuse shortwave measurements made with first class thermopile based instruments. Pyrgeometers can be used to measure the sky temperature and are used to calculate the pyranometer?s IR radiative losses.

Vignola, F.; Long, C. N.; Reda, I.

2009-08-01T23:59:59.000Z

172

FT-IR photoacoustic spectroscopy investigation of oxidized wool  

SciTech Connect

The Fourier transform infrared photoacoustic spectra (FT-IR/PAS) of wool, shrink-resist treated wool and corona discharge oxidized wool are reported. Products of the oxidation of wool by dichloroisocyanuric acid are discussed. The FT-IR/PAS results indicate the formation of a sulphinic acid residue during the wool treatment.

McKenna, W.P.; Gale, D.J.; Rivett, D.E.; Eyring, E.M.

1985-02-01T23:59:59.000Z

173

Scaling IR-system evaluation using term relevance sets  

Science Conference Proceedings (OSTI)

This paper describes an evaluation method based on Term Relevance Sets Trels that measures an IR system's quality by examining the content of the retrieved results rather than by looking for pre-specified relevant pages. Trels consist of a list ... Keywords: IR-system evaluation, keywords, trels, web search evaluation

Einat Amitay; David Carmel; Ronny Lempel; Aya Soffer

2004-07-01T23:59:59.000Z

174

Combination of Manually Digitized Radar and GOES IR for Real-Time Display of Rainfall Intensity  

Science Conference Proceedings (OSTI)

Manually Digitized Radar (MDR) and Geostationary Operational Environmental Satellite (GOES) thermal infrared (IR) data were merged to form a higher-resolution radar/IR product than that represented by the MDR. The combination MDR/IR maps were ...

Paul H. Heinemann; J. David Martsolf; John F. Gerber; Daniel L. Smith

1987-08-01T23:59:59.000Z

175

A Comparison of Infrared Light Emitting Diodes (IR-LED) versus Infrared  

E-Print Network (OSTI)

B. Characteristics of a typical IR LED analogous to the typeLight Emitting Diodes (IR-LED) versus Infrared Helium-Neon (light emitting diode (IR-LED) to quantitatively measure fuel

Girard, James W.; Bogin, Gregory E; Mack, John Hunter; Chen, J-Y; Dibble, Rober W

2005-01-01T23:59:59.000Z

176

IRS Announces New Tribal Economic Development Bond Allocation Guidance |  

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

IRS Announces New Tribal Economic Development Bond Allocation IRS Announces New Tribal Economic Development Bond Allocation Guidance IRS Announces New Tribal Economic Development Bond Allocation Guidance July 18, 2012 - 3:46pm Addthis To promote economic growth in tribal communities, Treasury and the Internal Revenue Service (IRS) published new guidance on July 18, 2012, allocating Tribal Economic Development Bonds (TEDBs). The TEDB program was established under the American Reinvestment and Recovery Act, and provides Tribes with the authority to issue tax-exempt debt for a wider range of activities to spur job creation and promote economic growth in Indian country. Providing Tribes with the ability to issue tax-exempt debt for a broader scope of activities similar to that available to states and local governments lowers

177

Low dose ionizing radiation (IR) signaling regulation in vivo...  

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

studies from our lab indicated that human cells exposed to low doses of IR caused growth stimulation, speeding cells up in their cell cycle division (i.e., checkpoint regulation),...

178

US-LHC IR magnet error analysis and compensation  

SciTech Connect

This paper studies the impact of the insertion-region (IR) magnet field errors on LHC collision performance. Compensation schemes including magnet orientation optimization, body-end compensation, tuning shims, and local nonlinear correction are shown to be highly effective.

Wei, J.; Ptitsin, V.; Pilat, F.; Tepikian, S. [Brookhaven National Lab., Upton, NY (United States); Gelfand, N.; Wan, W.; Holt, J. [Fermi National Accelerator Lab., Batavia, IL (United States)

1998-08-01T23:59:59.000Z

179

Ir-based alloys for ultra-high temperature applications ...  

Site Map; Printable Version; Share this resource. Send a link to Ir-based alloys for ultra-high temperature applications - Energy Innovation Portalto someone by E-mail

180

Synthetic IR Scene Simulation of Air-borne Targets  

E-Print Network (OSTI)

IR scenes of high fidelity are needed to support the development and testing of various target detection and tracking techniques. It is impractical to test detection and tracking algorithms under all conceivable conditions. Therefore, to test the effectiveness of detection and tracking algorithms under variety of scenarios, synthetic IR scenes are generated. For air-borne targets, the presence of clouds plays an important role, since they affect most IR sensors. We propose, a mod- ification of original Gardner's Method [3], in order to generate clouds of richer spectral content. We also ex- plore an algorithm based on self-similarity [5] for cloud texture generation. Synthetic IR cloud images generated by our scene simulation software are radiometrically accurate and have typical cloud texture variations. We use Modtran J.O for radiometric calculation and VRML (Virtual Reality Modeling Language) for scene rendering.

Shankar T. More; Avinash A. Pandit; Avinash A. P; S. N. Merchant; U. B. Desai

2002-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "io ir iq" 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

IRS Announces New Tribal Economic Development Bond Allocation...  

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

2012 - 3:46pm Addthis To promote economic growth in tribal communities, Treasury and the Internal Revenue Service (IRS) published new guidance on July 18, 2012, allocating Tribal...

182

Design of high efficiency Mid IR QCL lasers  

E-Print Network (OSTI)

The proposed research is a study of designing high-efficiency Mid-IR quantum cascade lasers (QCL). This thesis explores "injector-less" designs for achieving lower voltage defects and improving wall plug efficiencies through ...

Hsu, Allen Long

2008-01-01T23:59:59.000Z

183

Liquid chromatography/Fourier transform IR spectrometry interface flow cell  

DOE Patents (OSTI)

A zero dead volume (ZDV) microbore high performance liquid chromatography (.mu.HPLC)/Fourier transform infrared (FTIR) interface flow cell includes an IR transparent crystal having a small diameter bore therein through which a sample liquid is passed. The interface flow cell further includes a metal holder in combination with a pair of inner, compressible seals for directly coupling the thus configured spectrometric flow cell to the outlet of a .mu.HPLC column end fitting to minimize the transfer volume of the effluents exiting the .mu.HPLC column which exhibit excellent flow characteristics due to the essentially unencumbered, open-flow design. The IR beam passes transverse to the sample flow through the circular bore within the IR transparent crystal, which is preferably comprised of potassium bromide (KBr) or calcium fluoride (CaF.sub.2), so as to minimize interference patterns and vignetting encountered in conventional parallel-plate IR cells. The long IR beam pathlength and lensing effect of the circular cross-section of the sample volume in combination with the refractive index differences between the solvent and the transparent crystal serve to focus the IR beam in enhancing sample detection sensitivity by an order of magnitude.

Johnson, Charles C. (Fairfield, OH); Taylor, Larry T. (Blacksburg, VA)

1986-01-01T23:59:59.000Z

184

Liquid chromatography/Fourier transform IR spectrometry interface flow cell  

DOE Patents (OSTI)

A zero dead volume (ZDV) microbore high performance liquid chromatography (..mu.. HPLC)/Fourier transform infrared (FTIR) interface flow cell includes an IR transparent crystal having a small diameter bore therein through which a sample liquid is passed. The interface flow cell further includes a metal holder in combination with a pair of inner, compressible seals for directly coupling the thus configured spectrometric flow cell to the outlet of a ..mu.. HPLC column end fitting to minimize the transfer volume of the effluents exiting the ..mu.. HPLC column which exhibit excellent flow characteristics due to the essentially unencumbered, open-flow design. The IR beam passes transverse to the sample flow through the circular bore within the IR transparent crystal, which is preferably comprised of potassium bromide (KBr) or calcium fluoride (CaF/sub 2/), so as to minimize interference patterns and vignetting encountered in conventional parallel-plate IR cells. The long IR beam pathlength and lensing effect of the circular cross-section of the sample volume in combination with the refractive index differences between the solvent and the transparent crystal serve to focus the IR beam in enhancing sample detection sensitivity by an order of magnitude.

Johnson, C.C.; Taylor, L.T.

1985-01-04T23:59:59.000Z

185

FlexFetch: A History-Aware Scheme for I/O Energy Saving in Mobile Computing  

SciTech Connect

Extension of battery lifetime has always been a major issue for mobile computing. While more and more data are involved in mobile computing, energy consumption caused by I/O operations becomes increasingly large. In a pervasive computing environment, the requested data can be stored both on the local disk of a mobile computer by using the hoarding technique, and on the remote server, where data are accessible via wireless communication. Based on the current operational states of local disk (active or standby), the amount of data to be requested (small or large), and currently available wireless bandwidth (strong or weak reception), data access source can be adaptively selected to achieve maximum energy reduction. To this end, we propose a profile-based I/O management scheme, FlexFetch, that is aware of access history and adaptive to current access environment. Our simulation experiments driven by real-life traces demonstrate that the scheme can save up to 30% energy compared with existing representative schemes.

Chen, Feng [Ohio State University; Jiang, Song [Wayne State University, Detroit; Shi, Weisong [Wayne State University; Yu, Weikuan [ORNL

2007-01-01T23:59:59.000Z

186

Enhancing I/O Throughput via Efficient Routing and Placement for Large-scale Parallel File Systems  

Science Conference Proceedings (OSTI)

As storage systems get larger to meet the demands of petascale systems, careful planning must be applied to avoid congestion points and extract the maximum performance. In addition, the large data sets generated by such systems makes it desirable for all compute resources to have common access to this data without needing to copy it to each machine. This paper describes a method of placing I/O close to the storage nodes to minimize contention on Cray s SeaStar2+ network, and extends it to a routed Lustre configuration to gain the same benefits when running against a center-wide file system. Our experiments using half of the resources of Spider the center-wide file system at the Oak Ridge Leadership Computing Facility show that I/O write bandwidth can be improved by up to 45% (from 71.9 to 104 GB/s) for a direct-attached configuration and by 137% (47.6 GB/s to 115 GB/s) for a routed configuration. We demonstrated up to 20.7% reduction in run-time for production scientific applications. With the full Spider system, we demonstrated over 240 GB/s of aggregate bandwidth using our techniques.

Dillow, David A [ORNL; Shipman, Galen M [ORNL; Oral, H Sarp [ORNL; Zhang, Zhe [ORNL; Kim, Youngjae [ORNL

2011-01-01T23:59:59.000Z

187

Vež?jo geležinkeliais civilin? atsakomyb? pagal CITIF CIM taisykles ir SMGS susitarim?, panašumai ir skirtumai.  

E-Print Network (OSTI)

??COTIF CIM ir SMGS reglamentuoja tarptautin? krovini? vežim? geležinkeliais tarp valstybi? nari?, kurios yra ši? susitarim? šalys nar?s. Kadangi abu teis?s aktai dažnai koreliuoja, kai… (more)

Sušinskait?,; Nast?

2009-01-01T23:59:59.000Z

188

ARM - Field Campaign - IR Cloud Camera Feasibility Study  

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

govCampaignsIR Cloud Camera Feasibility Study govCampaignsIR Cloud Camera Feasibility Study Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : IR Cloud Camera Feasibility Study 2010.12.06 - 2010.12.13 Lead Scientist : Kyle Leesman For data sets, see below. Description During December 2010, a prototype LWIR cloud camera system was deployed at the Southern Great Plains Guest Instrument Facility (SGP-GIF). The system consisted of a microbolometer camera (~7-15 ìm) to capture sky imagery, a blackbody calibration source, and a GPS receiver used to estimate atmospheric column water vapor and constrain atmospheric compensation. The camera system collected calibrated sky radiance images co-incident with the SGP Central Facility with the goal of quantitatively assessing its ability

189

REGISTRATION LIST P PR RE ES SO OL LI IC CI IT TA AT TI IO ON  

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

REGISTRATION LIST REGISTRATION LIST P PR RE ES SO OL LI IC CI IT TA AT TI IO ON N C CO ON NF FE ER RE EN NC CE E August 9, 2011 Holiday Inn Capitol  550 C Street, SW  Washington, DC 20024 Page 1 of 9 Instructions: (iii) Please indicate (by checking the appropriate box) whether the organization you represent is a large business, small business, or not a business. (iv) Please indicate (by checking the appropriate box) whether your name or the name of your organization may be released on the NNSA website as an attendee of this conference. (v) Please provide an email address if you would like it to be released on the NNSA website. An email address cannot be released if you select neither in column (iv). Name Organization Name Large/Small (iii) Release Attendance? (iv) Email (to release)

190

Spatially Resolved Observations of the Galactic Center Source, IRS 21  

E-Print Network (OSTI)

We present diffraction-limited 2-25 micron images obtained with the W. M. Keck 10-m telescopes that spatially resolve the cool source, IRS 21, one of a small group of enigmatic objects in the central parsec of our Galaxy that have eluded classification. Modeled as a Gaussian, the azimuthally-averaged intensity profile of IRS 21 has a half-width half-maximum (HWHM) size of 650+/-80 AU at 2.2 microns and an average HWHM size of 1600+/-200 AU at mid-infrared wavelengths. These large apparent sizes imply an extended distribution of dust. The mid-infrared color map indicates that IRS 21 is a self-luminous source rather than an externally heated dust clump as originally suggested. The spectral energy distribution has distinct near- and mid-infrared components. A simple radiative transfer code, which simultaneously fits the near- and mid- infrared photometry and intensity profiles, supports a model in which the near-infrared radiation is scattered and extincted light from an embedded central source, while the mid-infrared emission is from thermally re-radiating silicate dust. We argue that IRS 21 (and by analogy the other luminous sources along the Northern Arm) is a massive star experiencing rapid mass loss and plowing through the Northern Arm, thereby generating a bow shock, which is spatially resolved in our observations.

A. Tanner; A. M. Ghez; M. Morris; E. E. Becklin; A. Cotera; M. Ressler; M. Werner; P. Wizinowich

2002-04-22T23:59:59.000Z

191

MID-IR FORCAST/SOFIA OBSERVATIONS OF M82  

SciTech Connect

We present 75'' Multiplication-Sign 75'' size maps of M82 at 6.4 {mu}m, 6.6 {mu}m, 7.7 {mu}m, 31.5 {mu}m, and 37.1 {mu}m with a resolution of {approx}4'' that we have obtained with the mid-IR camera FORCAST on SOFIA. We find strong emission from the inner 60'' ({approx}1 kpc) along the major axis, with the main peak 5'' west-southwest of the nucleus and a secondary peak 4'' east-northeast of the nucleus. The detailed morphology of the emission differs among the bands, which is likely due to different dust components dominating the continuum emission at short mid-IR wavelengths and long mid-IR wavelengths. We include Spitzer-IRS and Herschel/PACS 70 {mu}m data to fit spectral energy distribution templates at both emission peaks. The best-fitting templates have extinctions of A{sub V} = 18 and A{sub V} = 9 toward the main and secondary emission peak and we estimated a color temperature of 68 K at both peaks from the 31 {mu}m and 37 {mu}m measurement. At the emission peaks the estimated dust masses are on the order of 10{sup 4} M{sub Sun }.

Nikola, T.; Herter, T. L.; Adams, J. D.; Gull, G. E.; Henderson, C. P.; Schoenwald, J.; Stacey, G. [Department of Astronomy, Cornell University, Ithaca, NY 14853 (United States); Vacca, W. D.; De Buizer, J. M. [Universities Space Research Association, NASA Ames Research Center, MS 211-3, Moffett Field, CA 94035 (United States); Keller, L. D. [Department of Physics, Ithaca College, Ithaca, NY 14850 (United States); Morris, M. R. [Department of Physics and Astronomy, University of California, Los Angeles, CA 90095-1547 (United States); Tielens, A. [Leiden Observatory, P.O. Box 9513, Leiden, 2300 RA (Netherlands)

2012-04-20T23:59:59.000Z

192

Photoelectron spectroscopy of higher bromine and iodine oxide anions: Electron affinities and electronic structures of BrO2,3 and IO2-4 radicals.  

SciTech Connect

This report details a photoelectron spectroscopy (PES) investigation on electron affinities (EAs) and electronic structures of several atmospherically relevant higher bromine and iodine oxide molecules in the gas phase. PES spectra of BrO{sub 2}{sup -} and IO{sub 2}{sup -} were recorded at 12 K and four photon energies--355 nm/3.496 eV, 266 nm/4.661 eV, 193 nm/6.424 eV, and 157 nm/7.867 eV--while BrO{sub 3}{sup -}, IO{sub 3}{sup -}, and IO{sub 4}{sup -} were studied at 193 and 157 nm only due to their expected high electron binding energies. Spectral features corresponding to transitions from the anion ground state to the ground and excited states of the neutral are unraveled and resolved for each species. For the first time, EAs of these bromine and iodine oxides are experimentally determined (except for IO{sub 2}) to be 2.515 {+-} 0.010 (BrO{sub 2}), 2.575 {+-} 0.010 (IO{sub 2}), 4.60 {+-} 0.05 (BrO{sub 3}), 4.70 {+-} 0.05 (IO{sub 3}), and 6.05 {+-} 0.05 eV (IO{sub 4}). Three low-lying excited states with their respective excitation energies are obtained for BrO{sub 2} [1.69 (A {sup 2}B2), 1.79 (B {sup 2}A{sub 1}), 1.99 eV (C {sup 2}A{sub 2})], BrO{sub 3} [0.7 (A {sup 2}A{sub 2}), 1.6 (B {sup 2}E), 3.1 eV (C {sup 2}E)], and IO{sub 3} [0.60 (A {sup 2}A{sub 2}), 1.20 (B {sup 2}E), {approx}3.0 eV (C {sup 2}E)], whereas six excited states of IO{sub 2} are determined with the respective excitation energies of 1.63 (A {sup 2}B{sub 2}), 1.73 (B {sup 2}A{sub 1}), 1.83 (C {sup 2}A{sub 2}), 4.23 (D {sup 2}A{sub 1}), 4.63 (E {sup 2}B{sub 2}), and 5.23 eV (F {sup 2}B{sub 1}). Periodate possesses a very high electron binding energy. Only one excited state feature with 0.95 eV excitation energy is shown in the 157 nm spectrum. The obtained EAs and low-lying excited state information are compared with available theoretical calculations and discussed with their atmospheric implications.

Wen, Hui; Hou, Gaolei; Huang, Wei; Govind, Niranjan; Wang, Xue B.

2011-11-14T23:59:59.000Z

193

Ir L (I.~ DEPARTMENT OF ENERGY ALBUQUERQUE OPERATIONS OFFICE  

Office of Legacy Management (LM)

Ir Ir L (I.~ DEPARTMENT OF ENERGY ALBUQUERQUE OPERATIONS OFFICE I.: ~ CONTRACT NO. DE-AC04-83AL18796 1. Vicinity Property i: Completion Report i , . Remedial Actions , cContractor 4,. -~'~ ~for the Uranium Mill Tailings ~~~z ~ Remedial Actions Project - MK-FEROUSON COMPANY *C~Ad PEE *CMIWN>tfIOW VICINITY PROPERTY COMPLETION REPORT AT CA-401 MAYERS STREET BRIDGEVILLE, PA 15017 JUNE 30, 1987 FOR URANIUM MILL TAILINGS REMEDIAL ACTION PROJECT OFFICE ALBUQUERQUE OPERATIONS OFFICE U.S. DEPARTMENT OF ENERGY ALBUQUERQUE, NM BY MK-FERGUSON CC IPANY AND CHEM-NUCLEAR SYSTEMS, INC. MK-Ferguson Company has been granted authorization to perform remedial action under the Uranium Mill Tailings Radiation Control Act of 1978, Public Law 95-604. Remedial action was done in accordance to the EPA Standards for

194

IR OPTICS MEASUREMENT WITH LINEAR COUPLING'S ACTION-ANGLE PARAMETERIZATION.  

Science Conference Proceedings (OSTI)

A parameterization of linear coupling in action-angle coordinates is convenient for analytical calculations and interpretation of turn-by-turn (TBT) beam position monitor (BPM) data. We demonstrate how to use this parameterization to extract the twiss and coupling parameters in interaction regions (IRs), using BPMs on each side of the long IR drift region. The example of TBT BPM analysis was acquired at the Relativistic Heavy Ion Collider (RHIC), using an AC dipole to excite a single eigenmode. Besides the full treatment, a fast estimate of beta*, the beta function at the interaction point (IP), is provided, along with the phase advance between these BPMs. We also calculate and measure the waist of the beta function and the local optics.

LUO, Y.; BAI, M.; PILAT, R.; SATOGATA, T.; TRBOJEVIC, D.

2005-05-16T23:59:59.000Z

195

Interpretation of ES, CS, and IOS approximations within a translational-internal coupling scheme. II. Application to atom--diatom kinetic cross sections  

SciTech Connect

ES, CS, and IOS approximations to atom--diatom kinetic cross sections are derived. In doing so, reduced S-matrices in a translational-internal coupling scheme are stressed. This entails the insertion of recently obtained approximate reduced S-matrices in the translational-internal coupling scheme into previously derived general expressions for the kinetic cross sections. Of special interest is the structure (rotational j quantum number dependence) of the kinetic cross sections associated with the Senftleben Beenakker effects and of pure internal state relaxation phenomena. The viscomagnetic effect is used as an illustrative example. It is found in particular that there is a great similarity of structure between the energy sudden (and IOS) approximation and the previously derived distorted wave Born results.

Coombe, D.A.; Snider, R.F.

1980-02-15T23:59:59.000Z

196

Influence of collisions on coherent IR multiphoton absorption in thiophosgene  

Science Conference Proceedings (OSTI)

Absolute changes due to IR pumping in the intergrated rotational population of the vibrationless level (000000) of thiophosgene have been measured under beam conditions and bulb conditions (1--1000 mTorr). Under collisionless conditions, large decreases are observed which reflect depopulation of all rotational states at a single CO/sub 2/ laser frequency. At higher thiophosgene pressure, less depopulation occurs; zero depopulation of the vibrationless level is observed at pressure > or = 300 mTorr within experimental uncertainty (> gas kinetic.

Brenner, D.M.; Spencer, M.; Steinfeld, J.I.

1981-09-15T23:59:59.000Z

197

Dust Tracking Using Composite Visible/IR Images: A Case Study  

Science Conference Proceedings (OSTI)

Visible and infrared (IR) images from the National Oceanic and Atmospheric Administration's (NOAA's) Advanced Very High Resolution Radiometer are composited to improve the depiction of airborne dust over coastlines. On IR images, wind-raised dust ...

Thomas F. Lee

1989-06-01T23:59:59.000Z

198

Uncooled thin film pyroelectric IR detector with aerogel thermal isolation  

Science Conference Proceedings (OSTI)

Uncooled pyroelectric IR imaging systems, such as night vision goggles, offer important strategic advantages in battlefield scenarios and reconnaissance surveys. Until now, the current technology for fabricating these devices has been limited by low throughput and high cost which ultimately limit the availability of these sensor devices. We have developed and fabricated an alternative design for pyroelectric IR imaging sensors that utilizes a multilayered thin film deposition scheme to create a monolithic thin film imaging element on an active silicon substrate for the first time. This approach combines a thin film pyroelectric imaging element with a thermally insulating SiO{sub 2} aerogel thin film to produce a new type of uncooled IR sensor that offers significantly higher thermal, spatial, and temporal resolutions at a substantially lower cost per unit. This report describes the deposition, characterization and optimization of the aerogel thermal isolation layer and an appropriate pyroelectric imaging element. It also describes the overall integration of these components along with the appropriate planarization, etch stop, adhesion, electrode, and blacking agent thin film layers into a monolithic structure. 19 refs., 8 figs., 6 tabs.

Ruffner, J.A.; Clem, P.G.; Tuttle, B.A. [and others

1998-01-01T23:59:59.000Z

199

ARG O N N E N A T IO NAL L A B O R A T O RY  

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

ARG ARG O N N E N A T IO NAL L A B O R A T O RY * U N I V E R S I T Y OF C H I C A G O * An Update on the Advanced Photon Source at Argonne National Laboratory The The Source Source APRIL 1995 NUMBER 8 The APS has taken an important step toward f u l f i l l- ing its stated mission of "producing insertion-device- and bending-magnet-based synchro t ron radiation for u s e i n f o re f ro n t research in science and technology at t h i s n a t i o n a l u s e r f a c i l i t y. " At 1:55 on the morning of Marc h 2 5 , t h e APS stor- age ring radio frequency (rf) cavities began supplying energy to an electron beam with an energ y o f 4 . 5 b i l l i o n e l e c t ron volts. Rf capture i n t h e s t o r a g e r i n g , t h e f i r s t major step in commissioning the facility, had been accomplished (see sidebar) The beam was maintained for 15 minutes while electrons orbited the 1104-m stor-

200

N NE EX XT T G GE EN NE ER RA AT TI IO ON N S SA AF FE EG  

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

NE NE EX XT T G GE EN NE ER RA AT TI IO ON N S SA AF FE EG GU UA AR RD DS S I IN NI IT TI IA AT TI IV VE E ( (N NG GS SI I) ) O OP PP PO OR RT TU UN NI IT TI IE ES S F FO OR R S ST TU UD DE EN NT TS S A AN ND D Y YO OU UN NG G P PR RO OF FE ES SS SI IO ON NA AL LS S I IN NT TE ER RE ES ST TE ED D I IN N S SA AF FE EG GU UA AR RD DS S/ /N NO ON NP PR RO OL LI IF FE ER RA AT TI IO ON N The Next Generation Safeguards Initiative (NGSI) was launched by the National Nuclear Security Administration (NNSA) in FY 2008 to develop the policies, concepts, technologies, expertise, and infrastructure necessary to strengthen and sustain the international safeguards system as it evolves to meet new challenges over the next 25 years. NGSI's Human Capital Development subprogram 1 aims to revitalize and expand the international safeguards human capital base in the United States by attracting, educating, training, and retaining

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201

R A D IO L O G I C A L A S S E S S M E N T O F T H E F O R M  

Office of Legacy Management (LM)

,. . R A D IO L O G I C A L A S S E S S M E N T O F T H E F O R M E R R E D U C T IO N P IL O T P L A N T H u n tin g to n A lloys, Inc. H u n tin g to n , W e s t V irginia J.D. B...

202

Carbon-Supported IrNi Core-Shell Nanoparticles: Synthesis Characterization and Catalytic Activity  

Science Conference Proceedings (OSTI)

We synthesized carbon-supported IrNi core-shell nanoparticles by chemical reduction and subsequent thermal annealing in H{sub 2}, and verified the formation of Ir shells on IrNi solid solution alloy cores by various experimental methods. The EXAFS analysis is consistent with the model wherein the IrNi nanoparticles are composed of two-layer Ir shells and IrNi alloy cores. In situ XAS revealed that the Ir shells completely protect Ni atoms in the cores from oxidation or dissolution in an acid electrolyte under elevated potentials. The formation of Ir shell during annealing due to thermal segregation is monitored by time-resolved synchrotron XRD measurements, coupled with Rietveld refinement analyses. The H{sub 2} oxidation activity of the IrNi nanoparticles was found to be higher than that of a commercial Pt/C catalyst. This is predominantly due to Ni-core-induced Ir shell contraction that makes the surface less reactive for IrOH formation, and the resulting more metallic Ir surface becomes more active for H{sub 2} oxidation. This new class of core-shell nanoparticles appears promising for application as hydrogen anode fuel cell electrocatalysts.

K Sasaki; K Kuttiyiel; L Barrio; D Su; A Frenkel; N Marinkovic; D Mahajan; R Adzic

2011-12-31T23:59:59.000Z

203

Quantitative Vapor-phase IR Intensities and DFT Computations to Predict Absolute IR Spectra based on Molecular Structure: I. Alkanes  

SciTech Connect

Recently recorded quantitative IR spectra of a variety of gas-phase alkanes are shown to have integrated intensities in both the C-H stretching and C-H bending regions that depend linearly on the molecular size, i.e. the number of C-H bonds. This result is well predicted from CH4 to C15H32 by DFT computations of IR spectra at the B3LYP/6-31+G(d,p) level of DFT theory. A simple model predicting the absolute IR band intensities of alkanes based only on structural formula is proposed: For the C-H stretching band near 2930 cm-1 this is given by (in km/mol): CH¬_str = (34±3)*CH – (41±60) where CH is number of C-H bonds in the alkane. The linearity is explained in terms of coordinated motion of methylene groups rather than the summed intensities of autonomous -CH2- units. The effect of alkyl chain length on the intensity of a C-H bending mode is explored and interpreted in terms of conformer distribution. The relative intensity contribution of a methyl mode compared to the total C-H stretch intensity is shown to be linear in the number of terminal methyl groups in the alkane, and can be used to predict quantitative spectra a priori based on structure alone.

Williams, Stephen D.; Johnson, Timothy J.; Sharpe, Steven W.; Yavelak, Veronica; Oats, R. P.; Brauer, Carolyn S.

2013-11-13T23:59:59.000Z

204

OPEN MIDPLANE DIPOLE DESIGN FOR LHC IR UPGRADE.  

SciTech Connect

The proposed luminosity upgrade of the Large Hadron Collider (LHC), now under construction, will bring a large increase in the number of secondary particles from p-p collisions at the interaction point (IP). Energy deposition will be so large that the lifetime and quench performance of interaction region (IR) magnets may be significantly reduced if conventional designs are used. Moreover, the cryogenic capacity of the LHC will have to be significantly increased as the energy deposition load on the interaction region (IR) magnets by itself will exhaust the present capacity. We propose an alternate open midplane dipole design concept for the dipole-first optics that mitigates these issues. The proposed design takes advantage of the fact that most of the energy is deposited in the midplane region. The coil midplane region is kept free of superconductor, support structure and other material. Initial energy deposition calculations show that the increase in temperature remains within the quench tolerance of the superconducting coils. In addition, most of the energy is deposited in a relatively warm region where the heat removal is economical. We present the basic concept and preliminary design that includes several innovations.

GUPTA,R.; ANERELLA,M.; HARRISON,M.; SCHMALZLE,J.; MOKHOV,N.

2004-01-21T23:59:59.000Z

205

High Resolution FIR and IR Spectroscopy of Methanol Isotopologues  

Science Conference Proceedings (OSTI)

New astronomical facilities such as HIFI on the Herschel Space Observatory, the SOFIA airborne IR telescope and the ALMA sub-mm telescope array will yield spectra from interstellar and protostellar sources with vastly increased sensitivity and frequency coverage. This creates the need for major enhancements to laboratory databases for the more prominent interstellar 'weed' species in order to model and account for their lines in observed spectra in the search for new and more exotic interstellar molecular 'flowers'. With its large-amplitude internal torsional motion, methanol has particularly rich spectra throughout the FIR and IR regions and, being very widely distributed throughout the galaxy, is perhaps the most notorious interstellar weed. Thus, we have recorded new spectra for a variety of methanol isotopic species on the high-resolution FTIR spectrometer on the CLS FIR beamline. The aim is to extend quantum number coverage of the data, improve our understanding of the energy level structure, and provide the astronomical community with better databases and models of the spectral patterns with greater predictive power for a range of astrophysical conditions.

Lees, R. M.; Xu, Li-Hong [Centre for Laser, Atomic and Molecular Studies (CLAMS), University of New Brunswick, 100 Tucker Park Road, Saint John, NB E2L 4L5 (Canada); Appadoo, D. R. T.; Billinghurst, B. [Canadian Light Source, Univ. of Saskatchewan, 101 Perimeter Rd, Saskatoon, SK S7N 0X4 (Canada)

2010-02-03T23:59:59.000Z

206

IO235U  

Office of Legacy Management (LM)

35U 35U 93 -256 Deoart ent of E e ay *akYhlgs FWdnOfLe DATE : March 25, 1993 REPLY TO AWN OF: EW-93:Hartman SUBJECT: CATEGORICAL EXCLUSION (CX) D~ERMINATION - REMOVAL ACTION AT THE GRANITE CITY SITE TO: Carol M. Borgstrom, Director, Office of NEPA Oversight, FORS, EH-25 Attached is a categorical exclusion (CX) determination describing the proposed removal and disposal of radiologically contaminated materials at the Granite City, Illinois, site. Removal action at this site is being undertaken as part of DOE's Formerly Utilized Sites Remedial Action Program (FUSRAP) and is being conducted under the expedited response process. I have determined that this action conforms to an existing NEPA Subpart D CX and may be categorically excluded from further NEPA review and documentation.

207

Reflfit - Gj2 io  

Science Conference Proceedings (OSTI)

... LPC Load parameters from file entered using PF ... SLP Generate and print layer profile. ... separate magnetic and chemical profiles before their ...

208

Palmer-IO.ppt  

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

variable per snapshot. Corner centered data is an extra factor of 2 larger, edge centered data is 3 times as big Produce snapshots every simulated hour Write out 20 variables per...

209

IR differential-absorption lidars for ecological monitoring of the environment  

Science Conference Proceedings (OSTI)

A review of studies on lidar sensing of the environment by the method of IR differential absorption is presented. The differential-absorption method is described and its various applications are considered. A comparison of this method with other methods of lidar sensing showed that a differential-absorption lidar successfully supplements a Raman lidar. The basic parameters are presented for IR lidars fabricated recently by various research groups. The outlook for the IR lidar sensing of the atmosphere is discussed. (review)

Vasil'ev, B I [P.N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation); Mannoun, Oussama [Moscow Institute of Physics and Technology (State University), Dolgoprudnyi, Moscow Region (Russian Federation)

2006-09-30T23:59:59.000Z

210

Temperature Profile of IR Blocking Windows Used in Cryogenic X-Ray Spectrometers  

SciTech Connect

Cryogenic high-resolution X-ray spectrometers are typically operated with thin IR blocking windows to reduce radiative heating of the detector while allowing good x-ray transmission. We have estimated the temperature profile of these IR blocking windows under typical operating conditions. We show that the temperature in the center of the window is raised due to radiation from the higher temperature stages. This can increase the infrared photon flux onto the detector, thereby increasing the IR noise and decreasing the cryostat hold time. The increased window temperature constrains the maximum window size and the number of windows required. We discuss the consequences for IR blocking window design.

Friedrich, S.; Funk, T.; Drury, O.; Labov, S.E.

2000-08-08T23:59:59.000Z

211

Implied Dynamic Feedback of 3D IR Radiative Transfer on Simulated...  

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

of 3D IR Radiative Transfer on Simulated Cloud Fields D. B. Mechem and Y. L. Kogan Cooperative Institute for Mesoscale Meteorological Studies University of Oklahoma Norman,...

212

Wall-following method for an autonomous mobile robot using two IR sensors  

Science Conference Proceedings (OSTI)

The paper presents a local navigation method for mobile robot, based on sensorial information given by two IR sensors. These types of sensors are simple and relatively low-cost sensing modalities to perform navigation tasks in environments with obstacles ... Keywords: IR sensors, behaviors, mobile robot, obstacles avoidance, wall-following

I. Gavrilut; V. Tiponut; A. Gacsadi; L. Tepelea

2008-07-01T23:59:59.000Z

213

Towards a Benchmark and Automatic Calibration for IR-Based Concept Location  

Science Conference Proceedings (OSTI)

There has been a great deal of research into the use of Information Retrieval (IR)-based techniques to support concept location in source code. Much of this research has been focused on determining how to use various IR techniques to support concept ... Keywords: concept location, data model, software change reenactment, information retrieval, parameter calibration, benchmark

Scott David Ohlemacher; Andrian Marcus

2011-06-01T23:59:59.000Z

214

Evaluation of Methods to Correct for IR Loss in Eppley PSP Diffuse Measurements  

E-Print Network (OSTI)

in this report. Several methods of correcting for IR loss are examined. First subtracting out the average nighttime offset during the day is tested. Next an extrapolation between early morning and late evening offsets is tested. This should help eliminate the IR offset in both the morning and evening hours

Oregon, University of

215

Raman and IR spectra of butane: Anharmonic calculations and interpretation of room temperature spectra  

E-Print Network (OSTI)

Raman and IR spectra of butane: Anharmonic calculations and interpretation of room temperature-principles anharmonic calculations are carried out for the IR and Raman spectra of the CAH stretch- ing bands in butane.V. All rights reserved. 1. Introduction n-Butane is of great importance in several disciplines

Potma, Eric Olaf

216

In situ X-ray diffraction study of thin film Ir/Si solid state reactions  

Science Conference Proceedings (OSTI)

The solid state reaction between a thin (30nm) Ir film and different Si substrates (p-type Si(100), n- and p-type Si(111), silicon on insulator (SOI) and polycrystalline Si) was studied using a combination of in situ X-ray diffraction (XRD), in situ ... Keywords: Ir, NiSi, Si, XRD

W. Knaepen; J. Demeulemeester; D. Deduytsche; J. L. Jordan-Sweet; A. Vantomme; R. L. Van Meirhaeghe; C. Detavernier; C. Lavoie

2010-03-01T23:59:59.000Z

217

Low Dose Radiation Research Program: Comparisons of IR and ROS for  

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

Comparisons of IR and ROS for Induction of Damage to Cells Comparisons of IR and ROS for Induction of Damage to Cells Kathryn D. Held1, Yvonne L. McCarey1, Laurence Tartier1, Elena V. Rusyn1, Giuseppe Schettino2, Melvyn Folkard2, Kevin M. Prise2, and Barry D. Michael2 1Department of Radiation Oncology, Massachusetts General Hospital/Harvard Medical School, Boston, MA 02114; 2Gray Laboratory Cancer Research Trust, Mount Vernon Hospital, Northwood, HA6 2JR, UK Accurate evaluation of the risks associated with exposure to low doses of ionizing radiation (IR) is a major challenge for environmental sciences. Studies on the mechanisms of the actions of low doses of IR are needed to help understand possible risks. IR exerts its effects on cells through production of reactive oxidizing species (ROS) such as ·OH, H2O2 and

218

Structural, mechanical, and electronic properties of TaB{sub 2}, TaB, IrB{sub 2}, and IrB: First-principle calculations  

Science Conference Proceedings (OSTI)

First-principle calculations were performed to investigate the structural, elastic, and electronic properties of TaB{sub 2}, TaB, IrB{sub 2}, and IrB. The calculated equilibrium structural parameters, shear modulus, and Young's modulus of TaB{sub 2} are well consistent with the available experimental data, and TaB{sub 2} with P6/mmm space group has stronger directional bonding between ions than WB{sub 2}, OsB{sub 2}, IrN{sub 2}, and PtN{sub 2}. For TaB{sub 2}, the hexagonal P6/mmm structure is more stable than the orthorhombic Pmmn one, while for IrB{sub 2} the orthorhombic Pmmn structure is the most stable one. The high shear modulus of P6/mmm phase TaB{sub 2} is mainly due to the strong covalent pi-bonding of B-hexagon in the (0001) plane. Such a B-hexagon network can strongly resist against an applied [112-bar0] (0001) shear deformation. Correlation between the hardness and the elastic constants of TaB{sub 2} was discussed. The band structure shows that P6/mmm phase TaB{sub 2} and Pmmn phase IrB{sub 2} are both metallic. The calculations show that both TaB and IrB are elastically stable with the hexagonal P6{sub 3}/mmc structure. - Elastic constant c{sub 44} of TaB{sub 2} is calculated to be 235 GPa. This value is exceptionally high, exceeding those of WB{sub 2}, OsB{sub 2}, WB{sub 4}, OsN{sub 2}, IrN{sub 2}, and PtN{sub 2}.

Zhao Wenjie [Institute for Computational Materials Science, School of Physics and Electronics, Henan University, Kaifeng 475004 (China); Wang Yuanxu, E-mail: wangyx@henu.edu.c [Institute for Computational Materials Science, School of Physics and Electronics, Henan University, Kaifeng 475004 (China)

2009-10-15T23:59:59.000Z

219

An infrared study of galactic OH/IR stars. I. An optical/near-IR atlas of the Arecibo sample  

E-Print Network (OSTI)

In this paper we present optical and near-infrared finding charts, accurate astrometry (~1") and single-epoch near-infrared photometry for 371 IRAS sources, 96% of those included in the so-called Arecibo sample of OH/IR stars (Eder et al. 1988; Lewis et al. 1990a; Chengalur et al. 1993). The main photometric properties of the stars in the sample are presented and discussed as well as the problems found during the process of identification of the optical/near-infrared counterparts. In addition, we also identify suitable reference stars in each field to be used for differential photometry purposes in the future. We find that 39% of the sources (144 in number) have no optical counterpart, 8 of them being invisible even at near infrared wavelengths. The relative distribution of sources with and without optical counterpart in the IRAS two-colour diagram and their characteristic near infrared colours are interpreted as the consequence of the increasing thickness of their circumstellar shells. Among the objects not ...

Jiménez-Esteban, F M; Engels, D; García-Lario, P

2004-01-01T23:59:59.000Z

220

Mid-IR properties of Seyferts: Spitzer/IRS spectroscopy of the IRAS 12micron Seyfert sample  

E-Print Network (OSTI)

We performed an analysis of the mid-infared properties of the 12micron Seyfert sample, a complete unbiased 12micron flux limited sample of local Seyfert galaxies selected from the IRAS Faint Source Catalog, based on low resolution spectra obtained with the Infrared Spectrograph (IRS) on-board Spitzer Space Telescope. A detailed presentation of this analysis is dicussed in Wu et al. (2009). We find that on average, the 15-30micron slope of the continuum is -0.85+/-0.61 for Seyfert 1s and -1.53+/-0.84 for Seyfert 2s, and there is substantial scatter in each type. Moreover, nearly 32% of Seyfert 1s, and 9% of Seyfert 2s, display a peak in the mid-infrared spectrum at 20micron, which is attributed to an additional hot dust component. The Polycyclic Aromatic Hydrocarbon (PAH) equivalent width decreases with increasing dust temperature, as indicated by the global infrared color of the host galaxies. However, no statistical difference in PAH equivalent width is detected between the two Seyfert types, 1 and 2, of the...

Charmandaris, V; Huang, J; Spinoglio, L; Tommasin, S

2009-01-01T23:59:59.000Z

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While these samples are representative of the content of NLEBeta,
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221

CONCURRENCY AND COMPUTATION: PRACTICE AND EXPERIENCE Concurrency Computat.: Pract. Exper. 2008; 00:1–7 Prepared using cpeauth.cls [Version: 2002/09/19 v2.02] Global-scale Distributed I/O  

E-Print Network (OSTI)

Achieving high performance for distributed I/O on a wide-area network continues to be an elusive holy grail. Despite enhancements in network hardware as well as software stacks, achieving high-performance remains a challenge. In this paper, our worldwide team took a completely new and non-traditional approach to distributed I/O, called ParaMEDIC: Parallel Metadata Environment for Distributed I/O and Computing, by utilizing application-specific transformation of data to orders-of-magnitude smaller metadata before performing the actual I/O. Specifically, this paper details our experiences in deploying a large-scale system to facilitate the discovery of missing genes and constructing a genome similarity tree by encapsulating the mpiBLAST sequence-search algorithm into ParaMEDIC. The overall project involved nine different computational sites spread across the U.S. generating more than a petabyte of data, that was “teleported ” to a large-scale facility in Tokyo for storage.

P. Balaji; W. Feng; H. Lin; J. Archuleta; S. Matsuoka; A. Warren; J. Setubal; E. Lusk; R. Thakur; I. Foster; D. S. Katz; S. Jha; K. Shinpaugh; S. Coghlan; D. Reed

2008-01-01T23:59:59.000Z

222

Looking to the future: using IR interferometry to study microquasars  

E-Print Network (OSTI)

Infrared interferometry is currently in a rapid development phase, with new instrumentation soon achieving milliarcsecond spatial resolutions for faint sources and astrometry on the order of 10 microarcseconds. For jet studies in particular, the next generation of instruments will bring us closer to the event horizon of supermassive black holes such as Sgr A*, and the region where jet launching must occur. But a new possibility to study microquasars in general and jet physics in particular may also arise, using techniques similar to those employed for finding faint exoplanets around stars. The compact, steady jets observed in the hard state of X-ray binaries display a flat/inverted spectrum from the lower radio wavelengths up through at least the far-IR band. Somewhere above this band, a turnover is predicted where the jets become optically thin, revealing a power-law spectrum. This break may have been observed directly in GX339-4, but in most sources such a feature is likely hidden under bright emission from the stellar companion or accretion disk components. Detecting the exact location of this break would provide a new constraint on our models of jet physics, since the break frequency is dependent on the total power, as well as internal density and magnetic field. Furthermore, knowing the break location combined with the spectral index of the power-law would help constrain the amount of synchrotron emission contributed by the jets to the X-ray bands. Along with a summary of some potential observations requiring less optimal instrumental specifications, I will discuss a technique which may enable us to discern the jet break, and the chances of success based on theoretical models applied to some potential target sources.

Sera Markoff

2008-11-21T23:59:59.000Z

223

PAH chemistry and IR emission from circumstellar disks  

E-Print Network (OSTI)

Aims. The chemistry of, and infrared (IR) emission from, polycyclic aromatic hydrocarbons (PAHs) in disks around Herbig Ae/Be and T Tauri stars are investigated. The equilibrium distribution of the PAHs over all accessible charge/hydrogenation states depends on the size and shape of the PAHs and on the physical properties of the star and surrounding disk. Methods. A chemistry model is created to calculate this equilibrium distribution. Destruction of PAHs by ultraviolet (UV) photons, possibly in multi-photon absorption events, is taken into account. The chemistry model is coupled to a radiative transfer code to provide the physical parameters and to combine the PAH emission with the spectral energy distribution (SED) from the star+disk system. Results. Normally hydrogenated PAHs in Herbig Ae/Be disks account for most of the observed PAH emission, with neutral and positively ionized species contributing in roughly equal amounts. Close to the midplane, the PAHs are more strongly hydrogenated and negatively ionized, but these species do not contribute to the overall emission because of the low UV/optical flux deep inside the disk. PAHs of 50 carbon atoms are destroyed out to 100 AU in the disk's surface layer, and the resulting spatial extent of the emission does not agree well with observations. Rather, PAHs of about 100 carbon atoms or more are predicted to cause most of the observed emission. The emission is extended on a scale similar to that of the size of the disk. Furthermore, the emission from T Tauri disks is much weaker and concentrated more towards the central star than that from Herbig Ae/Be disks. Positively ionized PAHs are predicted to be largely absent in T Tauri disks because of the weaker radiation field.

R. Visser; V. C. Geers; C. P. Dullemond; J. -C. Augereau; K. M. Pontoppidan; E. F. van Dishoeck

2007-01-22T23:59:59.000Z

224

COMPARISON OF OFF-LINE IR BUMP AND ACTION-ANGLE KICK MINIMIZATION.  

Science Conference Proceedings (OSTI)

The interaction region bump (IR bump) nonlinear correction method has been used for the sextupole and octupole field error on-line corrections in the Relativistic Heavy Ion Collider (RHIC) . Some differences were found for the sextupole and octupole corrector strengths between the on-line IR bump correction and the predictions from the action-angle kick minimization. In this article, we compare the corrector strengths from these two methods based on the RHIC Blue ring lattice with the IR nonlinear modeling. The comparison confirms the differences between resulting corrector strengths. And the reason for the differences is found and discussed.

LUO, Y.; PILAT, F.; PTITSYN, V.; TRBOJEVIC, D.; WEI, J.

2005-05-16T23:59:59.000Z

225

80 BOOK REVIEWS What are the uses of this book? Those who design and implement IR systems and wish to  

E-Print Network (OSTI)

80 BOOK REVIEWS What are the uses of this book? Those who design and implement IR systems and wish find the book useful, especially those who teach about IR algorithms and coding. In all, this is a well-written book that describes how to build IR systems, with a strong focus on compression methods. But its

226

IR Imaging Using Arrays of SiO2 Micromechanical Detectors  

SciTech Connect

In this letter, we describe the fabrication of an array of bimaterial detectors for infrared (IR) imaging that utilize SiO2 as a structural material. All the substrate material underneath the active area of each detector element was removed. Each detector element incorporates an optical resonant cavity layer in the IR absorbing region of the sensing element. The simplified microfabrication process requires only four photolithographic steps with no wet etching or sacrificial layers. The thermomechanical deflection sensitivity was 7.9 10-3 rad/K which corresponds to a noise equivalent temperature difference (NETD) of 2.9 mK. In the present work the array was used to capture IR images while operating at room temperature and atmospheric pressure and no need for vacuum packaging. The average measured NETD of our IR detector system was approximately 200 mK but some sensing elements exhibited an NETD of 50 mK.

Grbovic, Dragoslav [ORNL; Lavrik, Nickolay V [ORNL; Rajic, Slobodan [ORNL; Datskos, Panos G [ORNL; Hunter, Scott Robert [ORNL

2012-01-01T23:59:59.000Z

227

Hydrogen Bond Rearrangements in Water Probed with Temperature-Dependent 2D IR  

E-Print Network (OSTI)

We use temperature-dependent two-dimensional infrared spectroscopy (2D IR) of dilute HOD in H2O to investigate hydrogen bond rearrangements in water. The OD stretching frequency is sensitive to its environment, and loss ...

Nicodemus, Rebecca A.

228

Unifying disc-jet behaviour in X-ray binaries: an optical/IR approach  

E-Print Network (OSTI)

Synchrotron emission from jets produced by X-ray binaries can be detected at optical and infrared (IR) frequencies. I show that optical/IR colour-magnitude diagrams of the outbursts of nine X-ray binaries successfully separate thermal disc emission from non-thermal jet emission, in both black hole and neutron star sources. A heated single-temperature blackbody is able to reproduce the observed relations between colour and magnitude, except when excursions are made to a redder colour than expected, which is due to jet emission. The general picture that is developed is then incorporated into the unified picture of disc-jet behaviour in black hole X-ray binaries. At a given position of a source in the X-ray hardness-intensity diagram, the radio, IR and optical properties can be inferred. Similarly, it is possible to predict the X-ray and radio luminosities and spectral states from optical/IR monitoring.

David M. Russell; Dipankar Maitra; Rob P. Fender; Fraser Lewis

2008-11-18T23:59:59.000Z

229

A Calibrated Measurement of the Near-IR Continuum Sky Brightness Using Magellan/FIRE  

E-Print Network (OSTI)

We characterize the near-IR sky background from 308 observations with the Folded-port InfraRed Echellette (FIRE) spectrograph at Magellan. A subset of 105 observations selected to minimize lunar and thermal effects gives ...

Sullivan, Peter William

230

FT-IR spectroscopy technology, market evolution and future strategies of Bruker Optics Inc.  

E-Print Network (OSTI)

This thesis explores the technology and market evolution of FT-IR spectroscopy over its nearly forty year history to aid in determining future product design and marketing strategies for an industry-leading firm, Bruker ...

Higdon, Thomas (Thomas Charles)

2010-01-01T23:59:59.000Z

231

Experimental Verification of the Linear Relationship between IR Extinction and Liquid Water Content of Clouds  

Science Conference Proceedings (OSTI)

The IR extinction of clouds has been measured with a CO2 laster transmissometer (? = 10.6 ?m). Using an established linear relationship (based on the Chýlek approximation to the Mie theory) between extinction and liquid water content, the liquid ...

Alan W. Gertler; Roger L. Steele

1980-11-01T23:59:59.000Z

232

Temperature-jump 2D IR spectroscopy to study protein conformational dynamics  

E-Print Network (OSTI)

Temperature-jump (T-jump) two-dimensional infrared spectroscopy (2D IR) is developed, characterized, and applied to the study of protein folding and association. In solution, protein conformational changes span a wide range ...

Jones, Kevin C. (Kevin Chapman)

2012-01-01T23:59:59.000Z

233

Inexpensive Near-IR Sun Photometer for Measuring Total Column Water Vapor  

Science Conference Proceedings (OSTI)

An inexpensive two-channel near-IR sun photometer for measuring total atmospheric column water vapor (precipitable water) has been developed for use by the Global Learning and Observations to Benefit the Environment (GLOBE) environmental science ...

David R. Brooks; Forrest M. Mims III; Richard Roettger

2007-07-01T23:59:59.000Z

234

Ingersoll Rand I-R PowerWorks 70 | Open Energy Information  

Open Energy Info (EERE)

Ingersoll Rand I-R PowerWorks 70 Jump to: navigation, search Manufacturer Ingersoll Rand Technology Type Microturbine Engine Type Inverter Power Output 70 kW0.07 MW 70,000 W...

235

Applications of IR Thermography in Capturing Thermal Transients and Other High-Speed Thermal Events  

DOE Green Energy (OSTI)

The high-speed, snap-shot mode, and the external triggering capability of an IR camera allows thermal transients to be captured. These advanced features were used to capture thermal transients during electrical breakdown of ZnO varistors and to freeze the rotation of an automobile disk brake in order to study thermoplastic instability in the braking system. The IR camera also showed the thermoplastic effect during cyclic fatigue testing of a glass matrix composite.

Dinwiddie, R.B.; Graham, S.; Wang, H.

1999-06-07T23:59:59.000Z

236

Low dose IR stimulation of TGF-β1 in vivo and downstream activation of  

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

IR stimulation of TGF-β1 in vivo and downstream activation of the IR stimulation of TGF-β1 in vivo and downstream activation of the IGF-1-sCLU pro-survival expression axis: A bystander and adaptive survival mechanism in vivo David Boothman University of Texas Southwestern Medical Center at Dallas Abstract Over the past few years our laboratory has elucidated the regulatory mechanisms governing the insulin-like growth factor-1 (IGF-1) - secretory clusterin (sCLU) expression axis, which can be induced by >2 cGy in vivo and in vitro with the same dose-response kinetics. IGF-1-sCLU expression can be induced by (A) TGF-β1 and (B) IR, but is suppressed by the p53 and Klotho tumor suppressors. Interestingly, there is a substantial difference between the regulatory mechanisms of IGF-1-sCLU induction after TGF-β1 and IR exposures, where p53 suppresses IR responses but does not suppress after

237

The Spectral Energy Distribution of HH30 IRS: Constraining The Circumstellar Dust Size Distribution  

E-Print Network (OSTI)

We present spectral energy distribution (SED) models for the edge-on classical T Tauri star HH30 IRS that indicate dust grains have grown to larger than 50 microns within its circumstellar disk. The disk geometry and inclination are known from previous modeling of multiwavelength Hubble Space Telescope images and we use the SED to constrain the dust size distribution. Model spectra are shown for different circumstellar dust models: a standard ISM mixture and larger grain models. As compared to ISM grains, the larger dust grain models have a shallower wavelength dependent opacity. Models with the larger dust grains provide a good match to the currently available data, but mid and far-IR observations are required to more tightly constrain the dust size distribution. The accretion luminosity in our models is L_accdistributions that are simple power-law extensions (i.e., no exponential cutoff) yield acceptable fits to the optical/near-IR but too much emission at mm wavelengths and require larger disk masses. Such a simple size distribution would not be expected in an environment such as the disk of HH30 IRS, particularly over such a large range in grain sizes. However, its ability to adequately characterize the grain populations may be determined from more complete observational sampling of the SED in the mid to far-IR.

Kenneth Wood; Michael J. Wolff; J. E. Bjorkman; Barbara Whitney

2001-09-04T23:59:59.000Z

238

Structural and Electrocatalytic Properties of PtIrCo/C Catalysts for Oxygen Reduction Reaction  

Science Conference Proceedings (OSTI)

This paper describes the results of an investigation of the synthesis of PtIrCo nanoparticles (2-3 nm) for electrocatalytic oxygen reduction reaction. The carbon-supported PtIrCo catalysts (PtIrCo/C) were thermally treated at temperatures ranging from 400 to 900 C. The size, composition, and atomic-scale structures of the PtIrCo/C catalysts were characterized for establishing their correlation with the electrocatalytic activity toward oxygen reduction reaction. The specific activity was found to increase by a factor of 3-5 for the PtIrCo/C catalysts in comparison with Pt/C catalysts. A correlation was identified between the specific activity and the nanoparticle's fcc-type lattice parameter. The specific activity increases whereas the fcc-type lattice parameter decreases with the thermal treatment temperature. This correlation was further substantiated by analyzing the interatomic spatial parameters in the trimetallic nanoparticles based on X-ray absorption fine structure spectroscopic and high-energy XRD experiments. Implications of these findings, along with the durability of the catalysts, to the design of active electrocatalysts were also discussed.

Loukrakpam, Rameshwori; Wanjala, Bridgid N.; Yin, Jun; Fang, Bin; Luo, Jin; Shao, Minhua; Protsailo, Lesia; Kawamura, Tetsuo; Chen, Yongsheng; Petkov, Valeri; Zhong, Chuan-Jian (CMU); (SUNY-Binghamton); (UTC Power); (Toyota); (Penn)

2011-08-29T23:59:59.000Z

239

An Improved Daylight Correction for IR Loss in ARM Diffuse SW Measurements  

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

An Improved Daylight Correction for IR Loss An Improved Daylight Correction for IR Loss in ARM Diffuse SW Measurements C. N. Long, K. Younkin, and K. L. Gaustad Pacific Northwest National Laboratory Richland, Washington J. A. Augustine National Oceanic and Atmospheric Administration Air Resources Laboratory Surface Radiation Research Branch Boulder, Colorado Introduction A paper by Cess et al. (2000) notes that some clear-sky diffuse shortwave (SW) measurements they were using from the Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) site exhibited less than Rayleigh magnitude. Remarking that this is a physical impossibility, the obvious conclusion forwarded by the authors was that there was some problem with the ARM SGP diffuse SW data. Shortly thereafter, the problem of infrared (IR) loss from thermopile-based single black detector

240

Microsoft Word - Responses for IRS Notices 2006-24, 25 May 5 2006.doc  

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

questions related to: questions related to: IRS Notice 2006-24, Qualifying Advanced Coal Project Program, IRS Notice 2006-25, Qualifying Gasification Program May 5, 2006 DOE is answering questions related only to DOE certifications. Other questions should be directed to the IRS by calling Doug Kim or Kathy Reed at (202) 622-3110, or by faxing the questions to them at (202) 622-4779. 36. Independent Financial Analyst a. Will a duly licensed CPA or CPA firm, which is independent of the applicant under the profession's promulgated rules on independence, meet the definition of "Independent Financial Analyst"? If so, will they still be required to state, in the report, their qualifications and experience that establishes their competence to evaluate project financing?

Note: This page contains sample records for the topic "io ir iq" 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

Application of scanning mid-IR-laser microscopy for characterization of semiconductor materials for photovoltaics  

E-Print Network (OSTI)

The scanning mid-IR-laser microscopy was previously demonstrated as an effective tool for characterization of different semiconductor crystals. Now the technique has been successfully applied for the investigation of CZ SixGe1-x -- a promising material for photovoltaics - and multicrystalline silicon for solar cells. In addition, this technique was shown to be appropriate for imaging of polishing-induced defects as well as such huge defects as "pin holes". Besides, previously unexplained "anomalous" (cubic power) dependence of signal of the scanning mid-IR-laser microscope in the optical-beam-induced light scattering mode on the photoexcitation power obtained for mechanically polished samples has now been attributed to the excess carrier scattering on charged linear defects, likely dislocation lines. The conclusion is made in the article that the scanning mid-IR-laser microscopy may serve as very effective tool for defect investigations in materials for modern photovoltaics.

Kalinushkin, V P; Yuryev, V A; 10.1016/S0927-0248(00)00076-3

2011-01-01T23:59:59.000Z

242

Polynorbornene as a low loss matrix material for IR metamaterial applications.  

Science Conference Proceedings (OSTI)

Novel low loss photopatternable matrix materials for IR metamaterial applications were synthesized using the ring opening metathesis polymerization reaction (ROMP) of norbornene followed by a partial hydrogenation to remove most of the IR absorbing olefin groups which absorb in the 8-12 {micro}m range. Photopatterning was achieved via crosslinking of the remaining olefin groups with alpha, omega-dithiols via the thiol-ene coupling reaction. Since ROMP is a living polymerization the molecular weight of the polymer can be controlled simply by varying the ratio of catalyst to monomer. In order to determine the optimum photopattenable IR matrix material we varied the amount of olefin remaining after the partial hydrogenation. Hydrogenation was accomplished using tosyl hydrazide. The degree of hydrogenation can be controlled by altering the reaction time or reaction stoichiometry and the by-products can be easily removed during workup by precipitation into ethanol. Several polymers have been prepared using this reduction scheme including two polymers which had 54% and 68% olefin remaining. Free standing films (approx. 12 {micro}m) were prepared from the 68% olefin material using draw-down technique and subsequently irradiated with a UV lamp (365 nm) for thirty minutes to induce crosslinking via thiol-ene reaction. After crosslinking, the olefin IR-absorption band disappeared and the Tg of the matrix material increased; both desirable properties for IR metamaterial applications. The polymer system has inherent photopatternable behavior primarily because of solubility differences between the pre-polymer and cross-linked matrix. Photopatterned structures using the 54% as well as the 68% olefin material were easily obtained. The synthesis, processing, and IR absorption data and the ramifications to dielectric metamaterials will be discussed.

Arrington, Christian Lew; Sinclair, Michael B.; Ginn, James Cleveland, III; Lee, Yun-Ju; Sanchez, Andrea E.; Clem, Paul Gilbert; Hines, Paul; Dirk, Shawn M.; Rasberry, Roger D.

2010-11-01T23:59:59.000Z

243

Search for the IR fixed point in the twisted Polyakov loop scheme  

E-Print Network (OSTI)

We present a non-perturbative study of the running coupling constant in the Twisted Polyakov Loop (TPL) scheme. We investigate how the systematic and statistical errors can be controlled {\\it via} a feasibility study in SU(3) pure Yang-Mills theory. We show that our method reproduces the perturbative determination of the running coupling in the UV. In addition, our numerical result agrees with the theoretical prediction of this coupling constant in the IR. We also present our preliminary results for $N_f=12$ QCD, where an IR fixed point may be present.

Erek Bilgici; Antonino Flachi; Etsuko Itou; Masafumi Kurachi; C. -J. David Lin; Hideo Matsufuru; Hiroshi Ohki; Tetsuya Onogi; Eigo Shintani; Takeshi Yamazaki

2009-10-21T23:59:59.000Z

244

Study and simulation of the infrared WLAN IrDA: an alternative to the radio  

Science Conference Proceedings (OSTI)

The dramatic development of radio solutions for wireless communications tends to blur the wider use that can be made of infrared transmissions in a room, a workshop or even a building. For some local applications for which a wireless part often constitutes ... Keywords: Infrared, IrDA, Modelisation, OPNET, Protocols, Simulation, WLAN, WPAN, Wireless

Thierry Val; Fabrice Peyrard; Michel Misson

2003-07-01T23:59:59.000Z

245

Monitoring of IR Clear-Sky Radiances over Oceans for SST (MICROS)  

Science Conference Proceedings (OSTI)

Monitoring of IR Clear-Sky Radiances over Oceans for SST (MICROS) is a Web-based tool to monitor “model minus observation” (M ? O) biases in clear-sky brightness temperatures (BTs) and sea surface temperatures (SSTs) produced by the Advanced Clear-...

Xingming Liang; Alexander Ignatov

2011-10-01T23:59:59.000Z

246

Parameterizations for Water Vapor IR Radiative Transfer in Both the Middle and Lower Atmospheres  

Science Conference Proceedings (OSTI)

Water vapor contributes a maximum of 1°C/day to the middle atmospheric thermal infrared (IR) cooling. This magnitude is small but not negligible. Because of the small amount of mass involved and the extremely narrow molecular absorption lines at ...

Ming-Dah Chou; William L. Ridgway; Michael M-H. Yan

1995-04-01T23:59:59.000Z

247

Dust in the polar region as a major contributor to the IR emission of AGN  

E-Print Network (OSTI)

(abridged) It is generally assumed that the distribution of dust on parsec scales forms a geometrically- and optically-thick entity in the equatorial plane around the accretion disk and broad-line region - dubbed "dust torus" - that emits the bulk of the sub-arcsecond-scale IR emission and gives rise to orientation-dependent obscuration. Here we report detailed interferometry observations of the unobscured (type 1) AGN in NGC 3783 that allow us to constrain the size, elongation, and direction of the mid-IR emission with high accuracy. The mid-IR emission is characterized by a strong elongation toward position angle PA -52 deg, closely aligned with the polar axis (PA -45 deg). We determine half-light radii along the major and minor axes at 12.5 {\\mu}m of (4.23 +/- 0.63) pc x (1.42 +/- 0.21) pc, which corresponds to intrinsically-scaled sizes of (69.4 +/- 10.8) rin x (23.3 +/- 3.5) rin for the inner dust radius of rin = 0.061 pc as inferred from near-IR reverberation mapping. This implies an axis ratio of 3:1, ...

Hoenig, Sebastian F; Tristram, Konrad R W; Prieto, M Almudena; Gandhi, Poshak; Asmus, Daniel; Antonucci, Robert; Burtscher, Leonard; Duschl, Wolfgang J; Weigelt, Gerd

2013-01-01T23:59:59.000Z

248

The magnetic and crystal structures of Sr2IrO4: A neutron diffraction study  

SciTech Connect

We report a single-crystal neutron diffraction study of the layered Sr2IrO4. This work unambigu- ously determines the magnetic and crystal structures, and reveals that the spin orientation rigidly tracks the staggered rotation of the IrO6 octahedra in Sr2IrO4. The long-range antiferromagnetic order has a canted spin configuration with an ordered moment of 0.208(3) B/Ir site within the basal plane; a detailed examination of the spin canting yields 0.202(3) and 0.049(2) B/site for the a-axis and the b-axis, respectively. It is intriguing that forbidden nuclear reflections of space group I41/acd are also observed in a wide temperature range from 4 K to 600 K, which suggests a reduced crystal structure symmetry. This neutron scattering work provides a direct, well-refined experimen- tal characterization of the magnetic and crystal structures that are crucial to the understanding of the unconventional magnetism existent in this unusual magnetic insulator.

Ye, Feng [ORNL; Chi, Songxue [ORNL; Chakoumakos, Bryan C [ORNL; Fernandez-Baca, Jaime A [ORNL; Qi, Tongfei [University of Kentucky; Cao, Gang [University of Kentucky

2013-01-01T23:59:59.000Z

249

Combining the Best of Two Worlds: NLP and IR for Intranet Search  

Science Conference Proceedings (OSTI)

Natural language processing (NLP) is becoming much more robust and applicable in realistic applications. One area in which NLP has still not been fully exploited is information retrieval (IR). In particular we are interested in search over intranets ... Keywords: natural language processing, information retrieval, dialogue, domain knowledge, visualization

Suma Adindla; Udo Kruschwitz

2011-08-01T23:59:59.000Z

250

GaSb substrates with extended IR wavelength for advanced space based applications  

SciTech Connect

GaSb substrates have advantages that make them attractive for implementation of a wide range of infrared (IR) detectors with higher operating temperatures for stealth and space based applications. A significant aspect that would enable widespread commercial application of GaSb wafers for very long wavelength IR (VLWIR) applications is the capability for transmissivity beyond 15 m. Due largely to the GaSb (antisite) defect and other point defects in undoped GaSb substrates, intrinsic GaSb is still slightly p-type and strongly absorbs in the VLWIR. This requires backside thinning of the GaSb substrate for IR transmissivity. An extremely low n-type GaSb substrate is preferred to eliminate thinning and provide a substrate solution for backside illuminated VLWIR devices. By providing a more homogeneous radial distribution of the melt solute to suppress GaSb formation and controlling the cooling rate, ultra low doped n:GaSb has been achieved. This study examines the surface properties and IR transmission spectra of ultra low doped GaSb substrates at both room and low temperatures. Atomic force microscopy (AFM), homoepitaxy by MBE, and infrared Fourier transform (FTIR) analysis was implemented to examine material quality. As compared with standard low doped GaSb, the ultra low doped substrates show over 50% transmission and consistent wavelength transparency past 23 m with improved %T at low temperature. Homoepitaxy and AFM results indicate the ultra low doped GaSb has a low thermal desorbtion character and qualified morphology. In summary, improvements in room temperature IR transmission and extended wavelength characteristics have been shown consistently for ultra low doped n:GaSb substrates.

Allen, Lisa P.; Flint, Patrick; Dallas, Gordon; Bakken, Daniel; Blanchat, Kevin; Brown, Gail J.; Vangala, Shivashankar R.; Goodhue, William D.; Krishnaswami, Kannan

2009-05-01T23:59:59.000Z

251

NIST IR  

Science Conference Proceedings (OSTI)

... The technology focus areas that were most frequently quoted were: • sensors • energy devices/storage/renewable energy • nano/micro ...

2013-08-15T23:59:59.000Z

252

NIST IR  

Science Conference Proceedings (OSTI)

... clean, renewable, alternative energy-conversion equipment biofuels fuel cells grid ... If Institutes do not meet performance targets, their government ...

2013-08-20T23:59:59.000Z

253

NIST IR  

Science Conference Proceedings (OSTI)

... organic electronics printed electronics electro-optical devices energy clean, renewable, alternative energy-conversion equipment biofuels fuel cells ...

2013-08-20T23:59:59.000Z

254

NIST IR  

Science Conference Proceedings (OSTI)

... healthcare biomedical devices nanomedicine personalized ... vehicles water and water distribution ... Manufacturing Systems automation technologies ...

2013-08-15T23:59:59.000Z

255

I/O Library List  

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

List Package Platform Version Module Install Date Date Made Default ADIOS plain edison 1.4.1 adiosplain1.4.1 2013-01-22 2013-01-22 ADIOS plain hopper 1.2.1 adiosplain1.2.1...

256

SC11-IO.pptx  

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

data for post run analysis and visualization * You can use disk storage (large) as slow RAM memory (out-of-core algorithms) * Reading in large datasets for analysis or...

257

> GC-62 HQS Io002  

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

by the Office of Hydrogen and Superconductivity Technologies. The anticipated total dollar amount of the four phase subcontract is 7.1M of which 3M will be cost-sharing 50%....

258

A link between stem cells and the EMT phenotype induced by IR and TGFβ  

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

link between stem cells and the EMT phenotype induced by IR and TGFβ link between stem cells and the EMT phenotype induced by IR and TGFβ Ignacio Fernandez-Garcia New York University School of Medicine Abstract Epithelial-Mesenchymal Transition (EMT) occurs as key developmental program but is also often activated during cancer progression. EMT is characterized by loss of epithelial cell polarity, loss of cell-cell contacts, and acquisition of mesenchymal markers and phenotypic traits that include increased cell motility1. Approximately 18% of breast cancers exhibit evidence of EMT. We have shown that the progeny of irradiated human mammary epithelial cells (HMEC) undergo EMT when exposed to transforming growth factor β1 (TGFβ). Additionally, recent publication from Weinberg and colleagues showed that induction of EMT through engineered expression of

259

About ÂŤEffectiveÂŽ Height of the Aerosol Atmosphere in Visible and IR Wavelength Range  

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

"Effective" Height of the Aerosol Atmosphere in "Effective" Height of the Aerosol Atmosphere in Visible and IR Wavelength Range V. N. Uzhegov, D. M. Kabanov, M. V. Panchenko, Yu. A. Pkhalagov, and S. M. Sakerin Institute of Atmospheric Optics Tomsk, Russia Introduction Aerosol component of the atmosphere is one of the important factors affecting the radiation budget of the space - atmosphere - underlying surface system in visible and infrared (IR) wavelength ranges. It is extremely important to take into account the contribution of this component into the extinction of solar radiation under cloudless sky conditions. Sometimes it is important to know not only the total value of the aerosol component of extinction, but also to have the possibility to estimate the "effective" height of

260

Microsoft Word - Responses for IRS Notices 2006 24 and 25 May 4 2006.doc  

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

6-24, Qualifying Advanced Coal Project Program, 6-24, Qualifying Advanced Coal Project Program, IRS Notice 2006-25, Qualifying Gasification Program May 4, 2006 DOE is answering questions related only to DOE certifications. Other questions should be directed to the IRS by calling Doug Kim or Kathy Reed at (202) 622-3110, or by faxing the questions to them at (202) 622-4779. 21. Waste Coal. Is it correct that a low-cost anthracite culm (i.e., culm is defined as coal waste that consists of coal and rock with varying amounts of carbon material remaining after removal of a higher-quality saleable coal) qualifies for clean coal investment tax credits under sections 48A and 48B? Kindly assume that the producer procured the culm from a culm bank (i.e., ubiquitous piles or other depository of culm on

Note: This page contains sample records for the topic "io ir iq" 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.


261

Improved ARM-SGP TOA OLR Fluxes from GOES-8 IR Radiances Based on CERES Data  

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

ARM-SGP TOA OLR Fluxes from GOES-8 IR ARM-SGP TOA OLR Fluxes from GOES-8 IR Radiances Based on CERES Data D. R. Doelling and M. M. Khaiyer Analytical Services and Materials, Inc. Hampton, Virginia P. Minnis National Aeronautics and Space Administration Langley Research Center Hampton, Virginia Introduction The radiation budget at the top of the atmosphere (TOA) is a quantity of fundamental importance to the Atmospheric Radiation Measurement (ARM) Program. Thus, it is necessary to measure the radiation budget components, broadband shortwave albedo and outgoing longwave radiation (OLR), as accurately as possible. Measurement of OLR over the ARM surface sites has only been possible since the advent of Clouds and the Earth's Radiant Energy System (CERES; Wielicki et al. 1998) in 1998. Prior to

262

To: John R. Novak Radiation Safety - IRS From: G. T. Lonergan Radiation Safety - II§  

Office of Legacy Management (LM)

7, 19% 7, 19% To: John R. Novak Radiation Safety - IRS From: G. T. Lonergan Radiation Safety - II§ Subject: Extrusion of Billets, Titus Metals, Inc., Waterloo, Iowa A grpup of ANL aqloyees consisting of LE. Walker and S. Matsas (MET), E. Leverens (SSE), I(. C.~Buffy'(SPM), and G. T. Lonergan (IRS), traveled to Waterloo, Iowa, on June 29 where they accomplished the extrusion of U308 billets into fuel plates for Argonaut. Prior to beginning the extrusion operation, the floor area around the press, run-out table, stretch straightener, and all accessible portions of the press were surveyed. No activity was detected. The floor area from the furnace (uhere the billets were heated) to the press was coveredwith a layer of vinyl approximately 48fl wide and topped

263

First law of thermodynamics in IR modified Horava-Lifshitz gravity  

Science Conference Proceedings (OSTI)

We study the first law of thermodynamics in IR modified Horava-Lifshitz spacetime. Based on the Bekenstein-Hawking entropy, we obtain the integral formula and the differential formula of the first law of thermodynamics for the Kehagias-Sfetsos black hole by treating {omega} as a new state parameter and redefining a mass that is just equal to M{sub ADM} obtained by Myung [32] if we take {alpha}=3{pi}/8.

Wang Mengjie; Jing Jiliang; Ding Chikun; Chen Songbai [Institute of Physics and Department of Physics, Hunan Normal University, Changsha, Hunan 410081 (China) and Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Education, Hunan Normal University, Changsha, Hunan 410081 (China)

2010-04-15T23:59:59.000Z

264

Role of dipolar correlations in the IR spectra of water and ice  

E-Print Network (OSTI)

We report simulated infrared spectra of deuterated water and ice using Car-Parrinello molecular dynamics with maximally localized Wannier functions. Experimental features are accurately reproduced within the harmonic approximation. By decomposing the lineshapes in terms of intra and intermolecular dipole correlation functions we find that short-range intermolecular dynamic charge fluctuations associated to hydrogen bonds are prominent over the entire spectral range. Our analysis reveals the origin of several spectral features and identifies network bending modes in the far IR range.

Wei Chen; Manu Sharma; Raffaele Resta; Giulia Galli; Roberto Car

2008-04-22T23:59:59.000Z

265

Interacting Entropy-Corrected Holographic Dark Energy and IR Cut-Off Length  

E-Print Network (OSTI)

In this paper we consider holographic dark energy model with corrected holographic energy density and show that this model may be equivalent to the modified Chaplygin gas model. Then we obtain relation between entropy corrected holographic dark energy model and scalar field models. We do these works by using choices of IR cut-off length proportional to the Hubble radius, the event horizon radius, the Ricci length, and the Granda-Oliveros length.

J. Sadeghi; B. Pourhassan; Z. Abbaspour Moghaddam

2013-06-09T23:59:59.000Z

266

Light-Like Noncommutativity, Light-Front Quantization and New Light on UV/IR Mixing  

E-Print Network (OSTI)

We revisit the problem of quantizing field theories on noncommutative Moyal spacetime with \\emph{light-like} noncommutativity. To tackle the issues arising from noncommuting and hence nonlocal time, we argue that for this case light-front quantization procedure should be employed. In this appropriate quantization scheme we perform the non-planar loop analysis for the light-like noncommutative field theories. One of the important and peculiar features of light-front quantization is that the UV cutoff of the light-cone Hamiltonian manifests itself as an IR cutoff for the light-cone momentum, $p^+$. Due to this feature, the naive results of covariant quantization for the light-like case allude to the absence of the UV/IR mixing in the light-front quantization. However, by a careful analysis of non-planar loop integrals we show that this is not the case and the UV/IR mixing persists. In addition, we argue in favour of the perturbative unitarity of light-like noncommutative field theories in the light-front quantization scheme.

M. M. Sheikh-Jabbari; A. Tureanu

2010-10-02T23:59:59.000Z

267

Bimetallic IrNi Core Platinum Monolayer Shell Electrocatalysts for the Oxygen Reduction Reaction  

DOE Green Energy (OSTI)

We synthesized a low-Pt content electrocatalyst consisting of a Pt monolayer placed on carbon-supported thermally treated IrNi core-shell structured nanoparticles using galvanic displacement of a Cu monolayer deposited at underpotentials. The Pt mass activity of the Pt{sub ML}/IrNi/C electrocatalyst obtained in a scale-up synthesis is approximately 3 times higher than that of the commercial Pt/C electrocatalyst. The electronic and geometrical effects of the IrNi substrate on the Pt monolayer result in its higher catalytic activity than that of Pt nanoparticles. The structure and composition of the core-shell nanoparticles were verified using transmission electron microscopy and in situ X-ray absorption spectroscopy, while a potential cycling test was employed to confirm the stability of the electrocatalyst. Our experimental results, supported by the density functional calculations using a sphere-like model, demonstrate an effective way of using Pt that can resolve key problems of cathodic oxygen reduction hampering fuel cell commercialization.

Kuttiyiel K. A.; Sasaki, K.; Choi, Y.M.; Su, D.; Liu, P.; Adzic, R.R.

2012-01-01T23:59:59.000Z

268

Interstitial BiO molecule as a center of broadband IR luminescence in bismuth-doped silica glass  

E-Print Network (OSTI)

IR luminescence and absorption in bismuth-doped silica glass-core fibers observed recently (see [arXiv:1106.2969v1 [physics.optics]) are argued to be caused by transitions in interstitial BiO molecules

Sokolov, V O; Dianov, E M

2011-01-01T23:59:59.000Z

269

Scanning mid-IR-laser microscopy: an efficient tool for materials studies in silicon-based photonics and photovoltaics  

E-Print Network (OSTI)

A method of scanning mid-IR-laser microscopy has recently been proposed for the investigation of large-scale electrically and recombination-active defects in semiconductors and non-destructive inspection of semiconductor materials and structures in the industries of microelectronics and photovoltaics. The basis for this development was laid with a wide cycle of investigations on low-angle mid-IR-light scattering in semiconductors. The essence of the technical idea was to apply the dark-field method for spatial filtering of the scattered light in the scanning mid-IR-laser microscope together with the local photoexcitation of excess carriers within a small domain in a studied sample, thus forming an artificial source of scattering of the probe IR light for the recombination contrast imaging of defects. The current paper presents three contrasting examples of application of the above technique for defect visualization in silicon-based materials designed for photovoltaics and photonics which demonstrate that this...

Astafiev, O V; Yuryev, V A; 10.1016/S0022-0248(99)00711-3

2011-01-01T23:59:59.000Z

270

Atliekinio fosfogipso panaudojimas sunki?j? metal? immobilizacijai nuotek? dumble ir dumblo-dirvožemio mišiniuose.  

E-Print Network (OSTI)

??Nuotek? dumble esan?i? sunki?j? metal? neigiam? poveik? aplinkai bei žmogaus sveikatai galima sumažinti apribojant metal? judrum? aplinkoje. Magistro darbe tiriamas sunki?j? metal? judrumas ir j?… (more)

Puodži?nas,; Marius

2009-01-01T23:59:59.000Z

271

A Physical Method for the Calibration of the AVHRR/3 Thermal IR Channels 1: The Prelaunch Calibration Data  

Science Conference Proceedings (OSTI)

The absolute accuracy of the thermal infrared (IR) radiances and brightness temperatures derived from the Advanced Very High Resolution Radiometer (AVHRR) is still unknown, with major sources of error not yet fully understood. This is despite the ...

Jonathan P. D. Mittaz; Andrew R. Harris; Jerry T. Sullivan

2009-05-01T23:59:59.000Z

272

WATER ICE IN HIGH MASS-LOSS RATE OH/IR STARS  

SciTech Connect

We investigate water-ice features in spectral energy distributions (SEDs) of high mass-loss rate OH/IR stars. We use a radiative transfer code which can consider multiple components of dust shells to make model calculations for various dust species including water ice in the OH/IR stars. We find that the model SEDs are sensitively dependent on the location of the water-ice dust shell. For two sample stars (OH 127.8+0.0 and OH 26.5+0.6), we compare the detailed model results with the infrared observational data including the spectral data from the Infrared Space Observatory (ISO). For the two sample stars, we reproduce the crystalline water-ice features (absorption at 3.1 {mu}m and 11.5 {mu}m; emission at 44 and 62 {mu}m) observed by ISO using a separate component of the water-ice dust shell that condensed at about 84-87 K (r {approx} 1500-1800 AU) as well as the silicate dust shell that condensed at about 1000 K (r {approx} 19-25 AU). For a sample of 1533 OH/IR stars, we present infrared two-color diagrams (2CDs) using the Infrared Astronomical Satellite and AKARI data compared with theoretical model results. We find that the theoretical models clearly show the effects of the crystalline water-ice features (absorption at 11.5 {mu}m and emission at 62 {mu}m) on the 2CDs.

Suh, Kyung-Won; Kwon, Young-Joo, E-mail: kwsuh@chungbuk.ac.kr [Department of Astronomy and Space Science, Chungbuk National University, Cheongju-City 361-763 (Korea, Republic of)] [Department of Astronomy and Space Science, Chungbuk National University, Cheongju-City 361-763 (Korea, Republic of)

2013-01-10T23:59:59.000Z

273

Bismuth-doped optical fibres: A new breakthrough in near-IR lasing media  

SciTech Connect

Recent results demonstrate that bismuth-doped optical fibres have considerable potential as near-IR active lasing media. This paper examines bismuth-doped fibres intended for the fabrication of fibre lasers and optical amplifiers and reviews recent results on the luminescence properties of various types of bismuth-doped fibres and the performance of bismuth-doped fibre lasers and optical amplifiers for the spectral range 1150 - 1550 nm. Problems are discussed that have yet to be solved in order to improve the efficiency of the bismuth lasers and optical amplifiers. (optical fibres, lasers and amplifiers. properties and applications)

Dianov, Evgenii M [Fiber Optics Research Center, Russian Academy of Sciences, Moscow (Russian Federation)

2012-09-30T23:59:59.000Z

274

Phase-matched generation of coherent soft and hard X-rays using IR lasers  

DOE Patents (OSTI)

Phase-matched high-order harmonic generation of soft and hard X-rays is accomplished using infrared driving lasers in a high-pressure non-linear medium. The pressure of the non-linear medium is increased to multi-atmospheres and a mid-IR (or higher) laser device provides the driving pulse. Based on this scaling, also a general method for global optimization of the flux of phase-matched high-order harmonic generation at a desired wavelength is designed.

Popmintchev, Tenio V.; Chen, Ming-Chang; Bahabad, Alon; Murnane, Margaret M.; Kapteyn, Henry C.

2013-06-11T23:59:59.000Z

275

Recovering the Line-Of-Sight Magnetic Field in the Chromosphere from Ca II IR Spectra  

E-Print Network (OSTI)

We propose a method to derive the line-of-sight magnetic flux density from measurements in the chromospheric Ca II IR line at 854.2 nm. The method combines two well-understood techniques, the center-of-gravity and bisector methods, in a single hybrid technique. The technique is tested with magneto-static simulations of a flux tube. We apply the method to observations with the Interferometric Bidimensional Spectrometer (IBIS) installed at the Dunn Solar Telescope of the NSO/SP to investigate the morphology of the lower chromosphere, with focus on the chromospheric counterparts to the underlying photospheric magnetic flux elements.

Wöger, F; Uitenbroek, H; Rimmele, T

2009-01-01T23:59:59.000Z

276

Development of sup 1 sup 9 sup 2 Ir radiation sources for intravascular irradiation  

E-Print Network (OSTI)

Intravascular brachytherapy is a novel therapy for preventing the restenosis of coronary artery by use of low-dose irradiation. JAERI and Kyoto University have been developing sup 1 sup 9 sup 2 Ir radiation sources by the cooperative research project entitled as 'The research on safety and effectiveness of the intravascular brachytherapy for preventing restenosis of the coronary artery disease' since 1998. The radiation source was introduced into the stenosis through a catheter (a guide-tube to insert directly into vascular) to irradiate the diseased part. Ten sup 1 sup 9 sup 2 Ir seed sources (phi 0.4 mm x 2.5 mm) were positioned between nylon spacers (phi 0.3 mm x 1.0 mm) in a flexible covering tube and the tube was plugged with a core-wire; the tube was shrunk to fix the inside materials and the size is 0.46 mm in diameter and 3 m in length. The physically optimal design was determined to insert the radiation source easily into vascular and to get the dose uniformity in the diseased part. The production me...

Kogure, H; Iwamoto, S; Iwata, K; Kawauchi, Y; Nagata, Y; Sorita, T; Suzuki, K

2003-01-01T23:59:59.000Z

277

Consistency of vendor-specified activity values for {sup 192}Ir brachytherapy sources  

SciTech Connect

A long-term comparison was done between the manufacturer-stated {sup 192}Ir activity and the measured {sup 192}Ir activities determined with a well-type ionization chamber. Sources for a Nucletron Micro Selectron high-dose-rate (HDR) unit were used for this purpose. The radioactive sources reference activities were determined using a PTW well-type ionization chamber traceable to the National Institute of Standards and Technology Primary Calibration Laboratory. The measurements were taken in a period of 56 months with 17 different radioactive sources. The manufacturer stated activities were taken from the source calibration certificate provided by the manufacturer. These values were compared with the measured activities. The results have shown that both the percentage deviation of the monthly control measurements with the well-type chamber and the ratio between the measured activities to the manufacturer-stated value lie within {+-} 2.5%. These results were compared with similar published data and with uncertainty level (3% of the mean and 5% maximum deviation from mean) for brachytherapy sources calibration recommended by the AAPM. It was concluded that a threshold level of {+-}2.5% can be used as a suitable quality assurance indicator to spot problems in our department. The typical {+-}5% uncertainty as provided by the manufacturers may be tightened to {+-}3% to be more in line with published AAPM reports.

Austerlitz, Carlos, E-mail: camposc@ecu.edu [Department of Radiation Oncology, East Carolina University, Greenville, NC (United States); Wolfe, Melodee; Campos, Diana; Sibata, C.H. [Department of Radiation Oncology, East Carolina University, Greenville, NC (United States)

2012-04-01T23:59:59.000Z

278

Thermodynamics of interacting holographic dark energy with apparent horizon as an IR cutoff  

E-Print Network (OSTI)

As soon as an interaction between holographic dark energy and dark matter is taken into account, the identification of IR cutoff with Hubble radius $H^{-1}$, in flat universe, can simultaneously drive accelerated expansion and solve the coincidence problem. Based on this, we demonstrate that in a non-flat universe the natural choice for IR cutoff could be the apparent horizon radius, $\\tilde{r}_A={1}/{\\sqrt{H^2+k/a^2}}$. We show that any interaction of dark matter with holographic dark energy, whose infrared cutoff is set by the apparent horizon radius, implies an accelerated expansion and a constant ratio of the energy densities of both components thus solving the coincidence problem. We also verify that for a universe filled with dark energy and dark matter the Friedmann equation can be written in the form of the modified first law of thermodynamics, $dE=T_hdS_h+WdV$, at apparent horizon. In addition, the generalized second law of thermodynamics is fulfilled in a region enclosed by the apparent horizon. These results hold regardless of the specific form of dark energy and interaction term. Our study might reveal that in an accelerating universe with spatial curvature, the apparent horizon is a physical boundary from the thermodynamical point of view.

Ahmad Sheykhi

2009-10-03T23:59:59.000Z

279

Metallurgical and mechanical properties of thorium-doped Ir-0. 3% W alloys  

DOE Green Energy (OSTI)

Metallurgical and mechanical properties of Ir-0.3% W alloys have been studied as a function of thorium concentration in the range 0 to 1000 ppM by weight. The solubility limit of thorium in Ir-0.3% W is below 30 ppM. Above this limit, the excess thorium reacts with iridium to form second-phase particles. Thorium additions raise the recrystallization temperature and effectively retard grain growth at high temperatures. Tensile tests at 650/sup 0/C show that the alloy without thorium additions (undoped alloy) fractured by grainboundary (GB) separation, while the alloys doped with less than 500 ppM thorium failed mainly by transgranular fracture at 650/sup 0/C. Intergranular fracture in the doped alloys is suppressed by GB segregation of thorium, which improves the mechanical properties of the boundary. The impact properties of the alloys were correlated with test temperature, grain size, and heat treatment. The impact ductility increases with test temperature and decreases with grain size. For a given grain size, particularly in the fine-grain size range, the thorium-doped alloys are much more ductile and resistant to GB fracture. All of these results can be correlated on the basis of stress concentration on GBs by using a dislocation pileup model.

Liu, C.T.; Inouye, H.; Schaffhauser, A.C.

1980-04-01T23:59:59.000Z

280

Detailed mapping of the local Ir{sup 4+} dimers through the metal-insulator transitions of CuIr{sub 2}S{sub 4} thiospinel by x-ray atomic pair distribution function measurements.  

SciTech Connect

The evolution of the short-range structural signature of the Ir{sup 4+} dimer state in CuIr{sub 2}S{sub 4} thiospinel has been studied across the metal-insulator phase transitions as the metallic state is induced by temperature, Cr doping, and x-ray fluence. An atomic pair distribution function (PDF) approach reveals that there are no local dimers that survive into the metallic phase when this is invoked by temperature and doping. The PDF shows Ir{sup 4+} dimers when they exist, regardless of whether or not they are long-range ordered. At 100 K, exposure to a 98 keV x-ray beam melts the long-range dimer order within a few seconds, though the local dimers remain intact. This shows that the metallic state accessed on warming and doping is qualitatively different from the state obtained under x-ray irradiation.

Bozin, E. S.; Masadeh, A. S.; Hor, Y. S.; Mitchell, J. F.; Billinge, S. J. L.; Materials Science Division; BNL; Michigan State Univ.; Univ. of Jordan; Columbia Univ.

2011-01-24T23:59:59.000Z

Note: This page contains sample records for the topic "io ir iq" from the National Library of EnergyBeta (NLEBeta).
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to obtain the most current and comprehensive results.


281

Microsoft Word - PSEG Companies Comments in OE Docket No RRTT-IR-001.doc  

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

K. Richter K. Richter Assistant General Regulatory Counsel Regulatory Department 80 Park Plaza, T5C, Newark, NJ 07102-4194 tel: 973.430.6451 fax: 973.802.1267 email: david.richter@pseg.com March 28, 2012 VIA ELECTRONIC FILING Lamont Jackson Office of Electricity Delivery and Energy Reliability Mail Code OE-20 U.S. Department of Energy, 1000 Independence Avenue, SW. Washington, DC 20585 RE: DOE's Request for Information OE Docket No. RRTT-IR-001 Dear Mr. Jackson, Public Service Electric and Gas Company ("PSE&G") 1 , PSEG Power LLC ("PSEG Power") and PSEG Energy Resources & Trade LLC ("PSEG ER&T") (collectively referred to herein as the "PSEG Companies") respectfully submit the following comments in response to the Department of Energy's ("DOE") Request for

282

Microsoft Word - Cover letter to RRTT-IR-001 Comments.doc  

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

8, 2012 8, 2012 via electronic mail to: Lamont.Jackson@hq.doe.gov Lamont Jackson Office of Electricity Delivery and Energy Reliability Mail Code: OE-20 U.S. Department of Energy 1000 Independence Avenue S.W. Washington, D.C. 20585 Re: Rapid Response Team for Transmission OE Docket No. RRTT-IR-001 Dear Mr. Jackson: Pursuant to the Department of Energy Office of Electricity Delivery and Energy Reliability's February 21, 2012 Request for Information in the above-referenced docket, attached please find American Electric Power's comments. Respectfully submitted, /s/ Amanda Riggs Conner Amanda Riggs Conner American Electric Power Service Corporation 801 Pennsylvania Ave, N.W. Suite 320 Washington, DC 20004 Telephone: (202) 383-3436

283

Effect of Field Errors in Muon Collider IR Magnets on Beam Dynamics  

Science Conference Proceedings (OSTI)

In order to achieve peak luminosity of a Muon Collider (MC) in the 10{sup 35} cm{sup -2}s{sup -1} range very small values of beta-function at the interaction point (IP) are necessary ({beta}* {le} 1 cm) while the distance from IP to the first quadrupole can not be made shorter than {approx}6 m as dictated by the necessity of detector protection from backgrounds. In the result the beta-function at the final focus quadrupoles can reach 100 km making beam dynamics very sensitive to all kind of errors. In the present report we consider the effects on momentum acceptance and dynamic aperture of multipole field errors in the body of IR dipoles as well as of fringe-fields in both dipoles and quadrupoles in the ase of 1.5 TeV (c.o.m.) MC. Analysis shows these effects to be strong but correctable with dedicated multipole correctors.

Alexahin, Y.; Gianfelice-Wendt, E.; Kapin, V.V.; /Fermilab

2012-05-01T23:59:59.000Z

284

Prospecting for Heavy Elements with Future Far-IR/Submillimeter Observatories  

E-Print Network (OSTI)

To understand the cosmic history of element synthesis it will be important to obtain extinction-free measures of the heavy element contents of high-redshift objects and to chart two monumental events: the collapse of the first metal-free clouds to form stars, and the initial seeding of the universe with dust. The information needed to achieve these objectives is uniquely available in the far-infrared/submillimeter (FIR/SMM) spectral region. Following the Decadal Report and anticipating the development of the Single Aperture Far-IR (SAFIR) telescope and FIR/SMM interferometry, we estimate the measurement capabilities of a large-aperture, background-limited FIR/SMM observatory and an interferometer on a boom, and discuss how such instruments could be used to measure the element synthesis history of the universe.

Leisawitz, D T; Kashlinsky, A; Lawrence, C R; Mather, J C; Moseley, S H; Rinehart, S A; Silverberg, R F; Yorke, H W

2002-01-01T23:59:59.000Z

285

Gemini Mid-IR Polarimetry of NGC1068: Polarized Structures Around the Nucleus  

E-Print Network (OSTI)

We present diffraction limited, 10um imaging polarimetry data for the central regions of the archetypal Seyfert AGN, NGC1068. The position angle of polarization is consistent with three dominant polarizing mechanisms. We identify three distinct regions of polarization: (a) north of the nucleus, arising from aligned dust in the NLR, (b) south, east and west of the nucleus, consistent with dust being channeled toward the central engine and (c) a central minimum of polarization consistent with a compact (<22pc) torus. These observations provide continuity between the geometrically and optically thick torus and the host galaxy's nuclear environments. These images represent the first published mid-IR polarimetry from an 8-m class telescope and illustrate the potential of such observations.

C. Packham; S. Young; R. S. Fisher; K. Volk; R. Mason; J. H. Hough; P. F. Roche; M. Elitzur; J. Radomski; E. Perlman

2007-04-10T23:59:59.000Z

286

Gemini Mid-IR Polarimetry of NGC1068: Polarized Structures Around the Nucleus  

E-Print Network (OSTI)

We present diffraction limited, 10um imaging polarimetry data for the central regions of the archetypal Seyfert AGN, NGC1068. The position angle of polarization is consistent with three dominant polarizing mechanisms. We identify three distinct regions of polarization: (a) north of the nucleus, arising from aligned dust in the NLR, (b) south, east and west of the nucleus, consistent with dust being channeled toward the central engine and (c) a central minimum of polarization consistent with a compact (<22pc) torus. These observations provide continuity between the geometrically and optically thick torus and the host galaxy's nuclear environments. These images represent the first published mid-IR polarimetry from an 8-m class telescope and illustrate the potential of such observations.

Packham, C; Fisher, R S; Volk, K; Mason, R; Hough, J H; Roche, P F; Elitzur, M; Radomski, J; Perlman, E

2007-01-01T23:59:59.000Z

287

Neutronic safety and transient analyses for potential LEU conversion of the IR-8 research reactor.  

SciTech Connect

Kinetic parameters, isothermal reactivity feedback coefficients and three transients for the IR-8 research reactor cores loaded with either HEU(90%), HEU(36%), or LEU (19.75%) fuel assemblies (FA) were calculated using three dimensional diffusion theory flux solutions, RELAP5/MOD3.2 and PARET. The prompt neutron generation time and effective delayed neutron fractions were calculated for fresh and beginning-of-equilibrium-cycle cores. Isothermal reactivity feedback coefficients were calculated for changes in coolant density, coolant temperature and fuel temperature in fresh and equilibrium cores. These kinetic parameters and reactivity coefficients were used in transient analysis models to predict power histories, and peak fuel, clad and coolant temperatures. The transients modeled were a rapid and slow loss-of-flow, a slow reactivity insertion, and a fast reactivity insertion.

Deen, J. R.; Hanan, N. A.; Smith, R. S.; Matos, J. E.; Egorenkov, P. M.; Nasonov, V. A.

1999-09-27T23:59:59.000Z

288

Physics of Outflows: the Binary Protostar L 1551 IRS 5 and its Jets  

E-Print Network (OSTI)

Recent observations of the deeply embedded L1551 IRS5 system permit the detailed examination of the properties of both the stellar binary and the binary jet. For the individual components of the stellar binary, we determine their masses, mass accretion rates, effective temperatures and luminosities. For the atomic wind/jet flow, we determine the mass loss rate, yielding observationally determined values of the ratio of the mass loss to the mass accretion rate, f. For the X-ray emitting region in the northern jet, we have obtained the jet-velocity and derive the extinction and the densities on different spatial scales. Examining the observational evidence within the framework of the x-wind theory leads us to conclude that these models are indeed potentially able to account for the observational data for this deeply embedded source.

René Liseau; C. V. Malcolm Fridlund; Bengt Larsson

2008-01-01T23:59:59.000Z

289

Anisotropic intermediate valence in Yb2M3Ga9 (M = Rh, Ir)  

SciTech Connect

The intermediate valence compounds Yb{sub 2}M{sub 3}Ga{sub 9} (M = Rh, Ir) exhibit an anisotropic magnetic susceptibility. We report measurements of the temperature dependence of the 4f occupation number, n{sub f}(T), for Yb{sub 2}M{sub 3}Ga{sub 9} as well as the magnetic inelastic neutron scattering spectrum S{sub mag}({Delta}E) at 12 and 300 K for Yb{sub 2}Rh{sub 3}Ga{sub 9}. Both n{sub f}(T) and S{sub mag}({Delta}E) were calculated for the Anderson impurity model with crystal field terms within an approach based on the non-crossing approximation. These results corroborate the importance of crystal field effects in these materials; they also suggest that Anderson lattice effects are important to the physics of Yb{sub 2}M{sub 3}Ga{sub 9}.

Christianson, A.D.; Lawrence, J.M.; Lobos, A.M.; Aligia, A.A.; Bauer, E.D.; Moreno, N.O.; Booth, C.H.; Goremychkin, E.A.; Sarrao, J.L.; Thompson, J.D.; Batista, C.D.; Trouw, F.R.; Hehlen, M.P.

2005-04-26T23:59:59.000Z

290

Ternary Electrocatalysts for Oxidizing Ethanol to Carbon Dioxide: Making Ir Capable of Splitting C-C bond  

Science Conference Proceedings (OSTI)

Splitting the C-C bond is the main obstacle to electroxidation of ethanol (EOR) to CO2. We recently demonstrated that the ternary PtRhSnO2 electrocatalyst can accomplish that reaction at room temperature with Rh having a unique capability to split the C-C bond. In this article we report the finding that Ir can be induced to split the C-C bond as a component of the ternary catalyst. We synthesized, characterized and compared the properties of several ternary electrocatalysts. Carbon-supported nanoparticle (NP) electrocatalysts comprising a SnO2 NP core decorated with multi-metallic nanoislands (MM = PtIr, PtRh, IrRh, PtIrRh) were prepared using a seeded growth approach. An array of characterization techniques were employed to establish the composition and architecture of the synthesized MM /SnO2 NPs, while electrochemical and in situ infrared reflection absorption spectroscopy studies elucidated trends in activity and the nature of the reaction intermediates and products. Both EOR reactivity and selectivity towards CO2 formation of several of these MM /SnO2/C electrocatalysts are significantly higher compared to conventional Pt/C and Pt/SnO2/C catalysts. We demonstrate that the PtIr/SnO2/C catalyst with high Ir content shows outstanding catalytic property with the most negative EOR onset potential and reasonably good selectivity towards ethanol complete oxidation to CO2. PtRh/SnO2/C catalysts with a moderate Rh content exhibit the highest EOR selectivity, as deduced from infrared studies.

Li, Meng [Brookhaven National Laboratory (BNL); Cullen, David A [ORNL; Sasaki, Kotaro [Brookhaven National Laboratory (BNL); Marinkovic, N. [University of Delaware; More, Karren Leslie [ORNL; Adzic, Radoslav R. [Brookhaven National Laboratory (BNL)

2013-01-01T23:59:59.000Z

291

Medical Resident FICA Refund Claim Information The Internal Revenue Service (IRS) recently announced that it will refund the employer  

E-Print Network (OSTI)

Medical Resident FICA Refund Claim Information The Internal Revenue Service (IRS) recently announced that it will refund the employer and employee portion of FICA taxes paid for medical residents of all of our medical schools and medical centers for tax periods dating back to January 1, 1995. FICA

Russell, Lynn

292

arXiv:0903.5172v1[cs.IR]30Mar2009 Delocalization transition for the Google matrix  

E-Print Network (OSTI)

arXiv:0903.5172v1[cs.IR]30Mar2009 Delocalization transition for the Google matrix Olivier Giraud,1 (Dated: March 30, 2009) We study the localization properties of eigenvectors of the Google matrix by Google-type search is strongly affected in the phase of delocalized PageRank. PACS numbers: 89.20.Hh, 89

Shepelyansky, Dima

293

Free Tax Filing! VITA is a free program sponsored by the IRS which can prepare simple or low  

E-Print Network (OSTI)

Free Tax Filing! VITA is a free program sponsored by the IRS which can prepare simple or low income (under $58,000 per household) tax returns for FREE! Free tax filing starts on February 27th and ends our free tax filing events, please call 657-278-8681 or email csufvita@gmail.com to verify that you

de Lijser, Peter

294

Hidrofobiškumo ?taka dažikli? sorbcijai vilnos pluošte ir dažini? fizikin?ms savyb?ms.  

E-Print Network (OSTI)

??Baigiamojo darbo tikslas – ištirti vilnos pluošto paviršiaus hidrofobiškumo ?tak? dažikli? sorbcijai vilnos pluošte ir dažini? fizikin?ms savyb?ms. Nauj? antrachinonini? dažikli? RB 5-37 M?lynojo ir… (more)

Gr?bli?nait?,; Egl?

2011-01-01T23:59:59.000Z

295

Comparisons of Clear-Sky Outgoing Far-IR Flux Inferred from Satellite Observations and Computed from the Three Most Recent Reanalysis Products  

Science Conference Proceedings (OSTI)

The far-IR spectrum plays an important role in the earth’s radiation budget and remote sensing. The authors compare the near-global (80°S–80°N) outgoing clear-sky far-IR flux inferred from the collocated Atmospheric Infrared Sounder (AIRS) and ...

Xiuhong Chen; Xianglei Huang; Norman G. Loeb; Heli Wei

2013-01-01T23:59:59.000Z

296

SIZE AND TEMPERATURE DEPENDENCE IN THE FAR-IR SPECTRA OF WATER ICE PARTICLES  

SciTech Connect

Spectra of water-ice aerosol particles have been measured in the far-IR region using synchrotron radiation. The particles in the nanoscale size regime of 1-100 nm were formed by rapid collisional cooling at temperatures ranging from 4 to 190 K. The spectra show the characteristic bands centered near 44 {mu}m (230 cm{sup -1}) and 62 {mu}m (160 cm{sup -1}) associated with the intermolecular lattice modes of crystalline ice at all temperatures, in contrast to previous studies of thin films formed by vapor deposition where amorphous ice is generated below 140 K. The bands shift to higher wavenumber values as the temperature is reduced, consistent with the trend seen in earlier studies, but in our experiments the actual peak positions in the aerosol particle spectra are consistently higher by ca. 4 cm{sup -1}. This finding has implications for the potential use of these spectral features as a temperature probe. The particle sizes are small enough for their spectra to be free of scattering effects, and therefore provide a means to assess imaginary refractive index values obtained through Kramers-Kronig analyses of thin film spectra.

Medcraft, Chris; McNaughton, Don; Thompson, Chris D. [School of Chemistry, Monash University, Wellington Road, Clayton, Victoria 3800 (Australia); Appadoo, Dominique [Australian Synchrotron, Blackburn Road, Clayton, Victoria 3168 (Australia); Bauerecker, Sigurd [Institut fuer Physikalische und Theoretische Chemie, Technische Universitaet Braunschweig, Hans-Sommer-Strasse 10, D-38106 Braunschweig (Germany); Robertson, Evan G., E-mail: E.Robertson@latrobe.edu.au [Department of Chemistry and La Trobe Institute of Molecular Sciences, La Trobe University, Bundoora, Victoria 3086 (Australia)

2012-10-10T23:59:59.000Z

297

A neutronic feasibility study for LEU conversion of the IR-8 research reactor.  

SciTech Connect

Equilibrium fuel cycle comparisons for the IR-8 research reactor were made for HEU(90%), HEU(36%), and LEU (19.75%) fuel assembly (FA) designs using three dimensional multi-group diffusion theory models benchmarked to detailed Monte Carlo models of the reactor. Comparisons were made of changes in reactivity, cycle length, average {sup 235}U discharge burnup, thermal neutron flux, and control rod worths for the 90% and 36% enriched IRT-3M fuel assembly and the 19.75% enriched IRT-4M fuel assembly with the same fuel management strategy. The results of these comparisons showed that a uranium density of 3.5 g/cm{sup 3} in the fuel meat would be required in the LEU IRT-4M fuel assembly to match the cycle length of the HEU(90%) IRT-3M FA and an LEU density of 3.7 g/cm{sup 3} is needed to match the cycle length of the HEU(36%) IRT-3M FA.

Deen, J. R.

1998-10-22T23:59:59.000Z

298

High-Resolution Observations in B1-IRS: ammonia, CCS and water masers  

E-Print Network (OSTI)

We present a study of the structure and dynamics of the star forming region B1-IRS (IRAS 03301+3057) using the properties of different molecules at high angular resolution (~4''). We have used VLA observations of NH3, CCS, and H2O masers at 1 cm. CCS emission shows three clumps around the central source, with a velocity gradient from red to blueshifted velocities towards the protostar, probably due to the interaction with outflowing material. Water maser emission is elongated in the same direction as a reflection nebula detected at 2micron by 2MASS, with the maser spots located in a structure of some hundreds of AU from the central source, possibly tracing a jet. We propose a new outflow model to explain all our observations, consisting of a molecular outflow near the plane of the sky. Ammonia emission is extended and anticorrelated with CCS. We have detected for the first time this anticorrelation at small scales (1400 AU) in a star forming region.

De Gregorio-Monsalvo, I; Gómez, J F; Kuiper, T B H; Torrelles, J M; Anglada, G

2004-01-01T23:59:59.000Z

299

THE SPATIAL DISTRIBUTION OF ORGANICS TOWARD THE HIGH-MASS YSO NGC 7538 IRS9  

SciTech Connect

Complex molecules have been broadly classified into three generations dependent on the mode of formation and the required formation temperature (<25, 25-100 K, and >100 K). Around massive young stellar objects (MYSOs), icy grain mantles and gas are exposed to increasingly higher temperatures as material accretes from the outer envelope in toward the central hot region. The combination of this temperature profile and the generational chemistry should result in a changing complex molecular composition with radius around MYSOs. We combine IRAM 30 m and Submillimeter Array observations to explore the spatial distribution of organic molecules around the high-mass young stellar object NGC 7538 IRS9, whose weak complex molecule emission previously escaped detection. We find that emission from N-bearing organics and CH{sub 3}OH present substantial increases in emission around 8000 AU and R < 3000 AU, while unsaturated O-bearing molecules and hydrocarbons do not. The increase in line flux for some complex molecules in the envelope, around 8000 AU or 25 K, is consistent with recent model predictions of an onset of complex ice chemistry at 20-30 K. The emission increase for many of the same molecules at R < 3000 AU suggests the presence of a weak hot core, where thermal ice evaporation and hot gas-phase reactions drive the chemistry. Complex organics thus form at all radii and temperatures around this protostar, but the composition changes dramatically as the temperature increases, which is used together with an adapted gas-grain astrochemical model to constrain the chemical generation(s) to which different classes of molecules belong.

Oeberg, Karin I. [Departments of Chemistry and Astronomy, University of Virginia, Charlottesville, VA 22904 (United States); Boamah, Mavis D. [Wellesley College, 106 Central Street, Wellesley, MA 02481 (United States); Fayolle, Edith C. [Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA Leiden (Netherlands); Garrod, Robin T. [Center for Radiophysics and Space Research, Cornell University, Ithaca, NY 14853-6801 (United States); Cyganowski, Claudia J. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Van der Tak, Floris, E-mail: oberg@virginia.edu [Kapteyn Astronomical Institute, University of Groningen, 9700 AV Groningen (Netherlands)

2013-07-10T23:59:59.000Z

300

KUB5/HERA: a dual acting protein that suppresses genomic instability and promotes DNA repair after low dose IR exposure  

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

KUB5/HERA: a dual acting protein that suppresses genomic instability and KUB5/HERA: a dual acting protein that suppresses genomic instability and promotes DNA repair after low dose IR exposure Julio C. Morales 1 , Amy Rommel 1 , Konstantin Leskov 2 , Walter M. Hittelman 3 , David A. Boothman 1# 1 Simmons Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. 2 Department of Radiation Oncology, Case Western Reserve University, Cleveland, OH 44106, USA. 3 Department of Experimental Therapeutics, M.D. Anderson Cancer Center, Houston, TX 77030, USA. # To whom correspondence should be addressed. E-mail: David.Boothman@utsouthwestern.edu Eukaryotic cells can respond to DNA double strand breaks created by low doses of IR by activating homologous recombination (HR) or non-homologous end- joining (NHEJ) pathways to repair DNA. A yeast two-hybrid screen using Ku70 as

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301

New mechanism for nonlocality from string theory: UV-IR quantum entanglement and its imprints on the CMB  

Science Conference Proceedings (OSTI)

Puff field theories (PFT) arise as the decoupling limits of D3 branes in a Melvin universe and exhibit spatially nonlocal dynamics. Unlike other realizations of nonlocality in string theory, PFTs have full SO(3) rotational symmetry. In this work, we analyze the strongly coupled regime of a PFT through gravitational holography. We find a novel mechanism at the heart of the phenomenon of nonlocality: a quantum entanglement of UV and IR dynamics. In the holographic bulk, this translates to an apparent horizon splitting the space into two regions--with the UV completion of the PFT sitting at the horizon. We unravel this intricate UV-IR setting and devise a prescription for computing correlators that extends the original dictionary of holographic renormalization group. We then implement a cosmological scenario where PFT correlators set the initial conditions for primordial fluctuations. We compute the associated power spectrum of the cosmic microwave background and find that the scenario allows for a distinct stringy signature.

Minton, Gregory; Sahakian, Vatche [Harvey Mudd College, Physics Department, 241 Platt Boulevard, Claremont, California 91711 (United States)

2008-01-15T23:59:59.000Z

302

The role of the (111) texture on the exchange bias and interlayer coupling effects observed in sputtered NiFe/IrMn/Co trilayers  

Science Conference Proceedings (OSTI)

Magnetic properties of sputtered NiFe/IrMn/Co trilayers grown on different seed layers (Cu or Ta) deposited on Si (100) substrates were investigated by magnetometry and ferromagnetic resonance measurements. Exchange bias effect and magnetic spring behavior have been studied by changing the IrMn thickness. As shown by X-ray diffraction, Ta and Cu seed layers provoke different degrees of (111) fcc-texture that directly affect the exchange bias and indirectly modify the exchange spring coupling behavior. Increasing the IrMn thickness, it was observed that the coupling angle between the Co and NiFe ferromagnetic layers increases for the Cu seed system, but it reduces for the Ta case. The results were explained considering (i) different anisotropies of the Co and IrMn layers induced by the different degree of the (111) texture and (ii) the distinct exchange bias set at the NiFe/IrMn and IrMn/Co interfaces in both systems. The NiFe and Co interlayer coupling angle is strongly correlated with both exchange bias and exchange magnetic spring phenomena. It was also shown that the highest exchange bias field occurs when an unstressed L1{sub 2} IrMn structure is stabilized.

Castro, I. L.; Nascimento, V. P.; Passamani, E. C.; Takeuchi, A. Y.; Larica, C. [Universidade Federal do Espirito Santo, Vitoria, ES 29075-910 (Brazil)] [Universidade Federal do Espirito Santo, Vitoria, ES 29075-910 (Brazil); Tafur, M. [Universidade Federal de Itajuba, Campus Itabira, Itabira, MG 37500-903 (Brazil)] [Universidade Federal de Itajuba, Campus Itabira, Itabira, MG 37500-903 (Brazil); Pelegrini, F. [Universidade Federal de Goias, Goiania, GO 74001-970 (Brazil)] [Universidade Federal de Goias, Goiania, GO 74001-970 (Brazil)

2013-05-28T23:59:59.000Z

303

The near-IR Surface Brightness Method applied to six Cepheids in the young LMC cluster NGC1866  

E-Print Network (OSTI)

We present new near-IR light curves for six Cepheids in the young blue LMC cluster NGC1866 as well as high precision radial velocity curves for ten Cepheids in NGC1866 and two in NGC2031. For the six Cepheids in NGC1866 with new J and K light curves we determine distances and absolute magnitudes by applying the near-IR surface brightness method. We find that the formal error estimates on the derived distances are underestimated by about a factor of two. We find excellent agreement between the absolute magnitudes for the low metallicity LMC Cepheids with the Period-Luminosity (P-L) relation determined by the near-IR surface brightness (ISB) method for Galactic Cepheids suggesting that the slope of the P-L relations for low metallicity and solar metallicity samples could be very similar in contrast to other recent findings. Still there appears to be significant disagreement between the observed slopes of the OGLE based apparent P-L relations in the LMC and the slopes derived from ISB analysis of Galactic Cepheids, and by inference for Magellanic Cloud Cepheids, indicating a possible intrinsic problem with the ISB method itself. Resolving this problem could reaffirm the P-L relation as the prime distance indicator applicable as well to metallicities significantly different from the LMC value.

Jesper Storm; Wolfgang P. Gieren; Pascal Fouque; Thomas G. Barnes III; Matias Gomez

2005-06-06T23:59:59.000Z

304

R{sub 4}Ir{sub 13}Ge{sub 9} (R=La, Ce, Pr, Nd, Sm) and RIr{sub 3}Ge{sub 2} (R=La, Ce, Pr, Nd): Crystal structures with nets of Ir atoms  

Science Conference Proceedings (OSTI)

The crystal structures of the new ternary compounds Sm{sub 4}Ir{sub 13}Ge{sub 9} and LaIr{sub 3}Ge{sub 2} were determined and refined on the basis of single-crystal X-ray diffraction data. They belong to the Ho{sub 4}Ir{sub 13}Ge{sub 9} (oP52, Pmmn) and CeCo{sub 3}B{sub 2} (hP5, P6/mmm) structure types, respectively. The formation of isotypic compounds R{sub 4}Ir{sub 13}Ge{sub 9} with R=La, Ce, Pr, Nd, and RIr{sub 3}Ge{sub 2} with R=Ce, Pr, Nd, was established by powder X-ray diffraction. The RIr{sub 3}Ge{sub 2} (R=La, Ce, Pr, Nd) compounds exist only in as-cast samples and decompose during annealing at 800 Degree-Sign C with the formation of R{sub 4}Ir{sub 13}Ge{sub 9}. The structure of Sm{sub 4}Ir{sub 13}Ge{sub 9} contains intersecting, slightly puckered nets of Ir atoms (4{sup 4})(4{sup 3}.6){sub 2}(4.6{sup 2}){sub 2} and (4{sup 4}){sub 2}(4{sup 3}.6){sub 4}(4.6{sup 2}){sub 2} that are perpendicular to [0 1 1] as well as to [0 -1 1] and [0 0 1]. The Ir atoms are surrounded by Ge atoms that form tetrahedra or square pyramids (where the layers intersect). The Sm and additional Ir atoms (in trigonal-planar coordination) are situated in channels along [1 0 0] (short translation vector). In the structure of LaIr{sub 3}Ge{sub 2} the Ir atoms form planar Kagome nets (3.6.3.6) perpendicular to [0 0 1]. These nets alternate along the short translation vector with layers of La and Ge atoms. - Graphical abstract: The crystal structures contain the nets of Ir atoms as main structural motif: R{sub 4}Ir{sub 13}Ge{sub 9} contains intersecting slightly puckered nets of Ir atoms, whereas in the structure of RIr{sub 3}Ge{sub 2} the Ir atoms form planar Kagome nets. Highlights: Black-Right-Pointing-Pointer The Ir-rich ternary germanides R{sub 4}Ir{sub 13}Ge{sub 9} (R=La, Ce, Pr, Nd, Sm) and RIr{sub 3}Ge{sub 2} (R=La, Ce, Pr, Nd) have been synthesized. Black-Right-Pointing-Pointer The RIr{sub 3}Ge{sub 2} compounds exist only in as-cast samples and decompose during annealing at 800 Degree-Sign C with the formation of R{sub 4}Ir{sub 13}Ge{sub 9}. Black-Right-Pointing-Pointer The structure of R{sub 4}Ir{sub 13}Ge{sub 9} contains intersecting slightly puckered nets of Ir atoms. Black-Right-Pointing-Pointer In the structure of RIr{sub 3}Ge{sub 2} the Ir atoms form planar Kagome nets.

Yarema, Maksym [Department of Inorganic Chemistry, Ivan Franko National University of Lviv, Kyryla i Mefodiya Str, 6, UA-79005 Lviv (Ukraine) [Department of Inorganic Chemistry, Ivan Franko National University of Lviv, Kyryla i Mefodiya Str, 6, UA-79005 Lviv (Ukraine); Swiss Federal Laboratories for Materials Science and Technology (EMPA), Ueberlandstr. 129, CH-8600 Duebendorf (Switzerland); Zaremba, Oksana; Gladyshevskii, Roman [Department of Inorganic Chemistry, Ivan Franko National University of Lviv, Kyryla i Mefodiya Str, 6, UA-79005 Lviv (Ukraine)] [Department of Inorganic Chemistry, Ivan Franko National University of Lviv, Kyryla i Mefodiya Str, 6, UA-79005 Lviv (Ukraine); Hlukhyy, Viktor, E-mail: viktor.hlukhyy@lrz.tu-muenchen.de [Department Chemie, Technische Universitaet Muenchen, Lichtenbergstr. 4, D-85747 Garching (Germany)] [Department Chemie, Technische Universitaet Muenchen, Lichtenbergstr. 4, D-85747 Garching (Germany); Faessler, Thomas F. [Department Chemie, Technische Universitaet Muenchen, Lichtenbergstr. 4, D-85747 Garching (Germany)] [Department Chemie, Technische Universitaet Muenchen, Lichtenbergstr. 4, D-85747 Garching (Germany)

2012-12-15T23:59:59.000Z

305

A unified framework for resource-bounded autonomous agents interacting with unknown environments  

E-Print Network (OSTI)

the weather, play chess, solve mazes, drive cars, discover physical theories, solve IQ tests and predict future stock prices. Even though, admit- tedly, AIXI cannot be implemented because it is uncomputable, one should still be able to devise a down... , the implementation and the performance of an autonomous system. In navigation devices for instance, the usage of continuous I/O sets is vital for its robustness. Furthermore, choosing and modeling continuous I/O sets appropriately can be a very challenging task...

Ortega, Pedro Alejandro Jr

2011-07-12T23:59:59.000Z

306

Experimental and statistical requirements for developing a well-defined K/sub IR/ curve. Final report  

SciTech Connect

Further development of a statistically well-defined reference fracture toughness curve to verify and compliment the K/sub IR/ curve presently specified in Appendix G, Section III of the ASME Code was accomplished by performing critical experiments in small specimen fracture mechanics and improving techniques for statistical analysis of the data. Except for cleavage-initiated fracture, crack initiation was observed to occur prior to maximum load for all of the materials investigated. Initiation fracture toughness values (K/sub Jc/) based on R-curve heat-tinting studies were up to 50 percent less than the previously reported equivalent energy values (K*/sub d/). At upper shelf temperatures, the initiation fracture toughness (K/sub Jc/) generally increased with stress intensification rate. Both K/sub Jc/--Charpy V-notch and K/sub Ic/--specimen strength ratio correlations are promising methods for predicting thick-section behavior from small specimens. The previously developed tanh curve fitting procedure was improved to permit estimates of the variances and covariances of the regression coefficients to be computed. The distribution of the fracture toughness data was determined as a function of temperature. Instrumented precracked Charpy results were used to normalize the larger specimen fracture toughness data. The transformed large specimen fracture toughness data are used to generate statistically based lower-bound fracture toughness curves for either static or dynamic test results. A comparison of these lower bound curves with the K/sub IR/ curve shows that the K/sub IR/ curve is more conservative over most of its range. 143 figures, 26 tables.

Server, W.L.; Oldfield, W.; Wullaert, R.A.

1977-05-01T23:59:59.000Z

307

Fuel Economy of the 2013 Scion iQ  

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

4 cyl, 1.3 L Automatic (variable gear ratios) Regular Gasoline Compare Side-by-Side EPA Fuel Economy Miles per Gallon Personalize Regular Gasoline 37 Combined 36 City 37 Highway...

308

MIMO OFDM receivers for systems with IQ imbalances  

E-Print Network (OSTI)

USA (e-mail: tarighat@ee.ucla.edu; bagheri@ee.ucla.edu; sayed@ee.ucla.edu). Digital Object Identi?er 10.1109/TSP.2005.853148 large demand

Tarighat, Alireza; Sayed, A H

2005-01-01T23:59:59.000Z

309

Correction of I/Q channel errors without calibration  

DOE Patents (OSTI)

A method of providing a balanced demodular output for a signal such as a Doppler radar having an analog pulsed input; includes adding a variable phase shift as a function of time to the input signal, applying the phase shifted input signal to a demodulator; and generating a baseband signal from the input signal. The baseband signal is low-pass filtered and converted to a digital output signal. By removing the variable phase shift from the digital output signal, a complex data output is formed that is representative of the output of a balanced demodulator.

Doerry, Armin W. (Albuquerque, NM); Tise, Bertice L. (Albuquerque, NM)

2002-01-01T23:59:59.000Z

310

PRE-SW Grid-IQ Harmonics Evaluation Module - Prototype  

Science Conference Proceedings (OSTI)

The application provides a user-friendly interface that would be used to perform harmonic analysis such as conducting frequency scans and harmonic distortion analysis by allowing user to select the ...

2012-09-04T23:59:59.000Z

311

Towards IQ-Appliances: Quality-awareness in Information Virtualization .  

E-Print Network (OSTI)

??Our research addresses two important problems that arise in modern large-scale distributed systems: 1. The necessity to virtualize their data flows by applying actions such… (more)

Niranjan Mysore, Radhika

2007-01-01T23:59:59.000Z

312

BuildingIQ makes Argonne smarter about energy management | Argonne...  

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

in modeling, machine learning and adaptive controls." The researchers will use the TCS building at Argonne as a "living laboratory" to test the new systems. At approximately...

313

An infrared study of galactic OH/IR stars. II. The `GLMP sample' of red oxygen-rich AGB stars  

E-Print Network (OSTI)

We present optical and near-infrared finding charts taken from the DSS and 2MASS surveys of 94 IRAS sources selected from the GLMP catalogue (Garc\\'{\\i}a-Lario 1992), and accurate astrometry (~0.2") for most of them. Selection criteria were very red IRAS colours representative for OH/IR stars with optically thick circumstellar shells and the presence of variability according to the IRAS variability index (VAR>50). The main photometric properties of the stars in this `GLMP sample' are presented, discussed and compared with the correspondent properties of the `Arecibo sample' of OH/IR stars studied in Jim\\'enez-Esteban et al. (2005a). We find that 37% of the sample (N=34) have no counterpart in the 2MASS, implying extremely high optical depths of their shells. Most of the sources identified in the 2MASS are faint (K>~8) and of very red colour in the near-infrared, as expected. The brightest 2MASS counterpart (K=5.3mag) was found for IRAS 18299--1705. Its blue colour H--K=1.3 suggests that IRAS 8299--1705 is a p...

Jiménez-Esteban, F M; Engels, D; Calderón, J V P

2005-01-01T23:59:59.000Z

314

Development of an XUV-IR free-electron laser user facility for scientific research and industrial applications  

Science Conference Proceedings (OSTI)

Los Alamos has designed and proposes to establish an XUV-IR free- electron laser (FEL) user facility for scientific research and industrial applications based on coherent radiation ranging from soft x-rays as short as 1 nm to far-infrared wavelengths as long as 100 {mu}m. As the next-generation light source beyond low-emittance storage rings with undulator insertion devices, this proposed national FEL user facility should make available to researchers broadly tunable, picosecond-pulse, coherent radiation with 10{sup 4} to 10{sup 7} greater spectral flux and brightness. The facility design is based on two series of FEL oscillators including one regenerative amplifier. The primary series of seven FEL oscillators, driven by a single, 1-GeV rf linac, spans the short-wavelength range from 1 to 600 nm. A second 60-MeV rf linac, synchronized with the first, drives a series of three Vis/IR FEL oscillators to cover the 0. 5 to 100-{mu}m range. This paper presents the motivation for such a facility arising from its inherently high power per unit bandwidth and its potential use for an array of scientific and industrial applications, describes the facility design, output parameters, and user laboratories, makes comparisons with synchrotron radiation sources, and summarizes recent technical progress that supports the technical feasibility. 80 refs., 9 figs., 6 tabs.

Newnam, B.E.; Warren, R.W.; Conradson, S.D.; Goldstein, J.C.; McVey, B.D.; Schmitt, M.J.; Elliott, C.J.; Burns, M.J.; Carlsten, B.E.; Chan, K.C.; Johnson, W.J.; Wang, T.S.; Sheffield, R.L.; Meier, K.L.; Olsher, R.H.; Scott, M.L.; Griggs, J.E.

1991-01-01T23:59:59.000Z

315

Molecular origin of the difference in the HOH bend of the IR spectra between liquid water and ice  

SciTech Connect

The intensity of the HOH bend in the IR spectrum of ice is significantly smaller than the corresponding one in liquid water. This difference in the IR intensities of the HOH bend in the two systems is investigated using MD simulations with the flexible, polarizable, ab-initio based TTM3-F model for water, a potential that correctly reproduces the experimentally observed increase of the HOH bend in liquid water and ice from the water monomer value. We have identified two factors that are responsible for the difference in the intensity of the HOH bend in liquid water and ice: (i) the decrease of the intensity of the HOH bend in ice caused by the strong anti-correlation between the permanent dipole moment of a molecule and the induced dipole moment of a neighboring hydrogen bond acceptor molecule and (ii) the weakening of this anti-correlation by the disordered hydrogen bond network in liquid water. The presence of the anti-correlation in ice is further confirmed by ab initio electronic structure calculations of water pentamer clusters extracted from the trajectories of the MD simulations for ice and liquid water.

Imoto, Sho; Xantheas, Sotiris S.; Saito, Shinji

2013-02-07T23:59:59.000Z

316

LABORATORY IR STUDIES AND ASTROPHYSICAL IMPLICATIONS OF C{sub 2}H{sub 2}-CONTAINING BINARY ICES  

SciTech Connect

Studies of molecular hot cores and protostellar environments have shown that the observed abundance of gas-phase acetylene (C{sub 2}H{sub 2}) cannot be matched by chemical models without the inclusion of C{sub 2}H{sub 2} molecules subliming from icy grain mantles. Searches for infrared (IR) spectral features of solid-phase acetylene are under way, but few laboratory reference spectra of C{sub 2}H{sub 2} in icy mixtures, which are needed for spectral fits to observational data, have been published. Here, we report a systematic study of the IR spectra of condensed-phase pure acetylene and acetylene in ices dominated by carbon monoxide (CO), carbon dioxide (CO{sub 2}), methane (CH{sub 4}), and water (H{sub 2}O). We present new spectral data for these ices, including band positions and intrinsic band strengths. For each ice mixture and concentration, we also explore the dependence of acetylene's {nu}{sub 5}-band position (743 cm{sup -1}, 13.46 {mu}m) and FWHM on temperature. Our results show that the {nu}{sub 5} feature is much more cleanly resolved in ices dominated by non-polar and low-polarity molecules, specifically CO, CO{sub 2}, and CH{sub 4}, than in mixtures dominated by H{sub 2}O-ice. We compare our laboratory ice spectra with observations of a quiescent region in Serpens.

Knez, C. [Astronomy Department, University of Maryland, College Park, MD 20742 (United States); Moore, M. H.; Hudson, R. L. [NASA Goddard Space Flight Center, Astrochemistry Laboratory, Greenbelt, MD 20771 (United States); Ferrante, R. F., E-mail: Claudia.Knez@jhuapl.edu [Chemistry Department, U.S. Naval Academy, 572 Holloway Road, Annapolis, MD 21402 (United States)

2012-04-01T23:59:59.000Z

317

The ITER VIS/IR wide angle viewing system: Challenges and on-going R and D  

SciTech Connect

The ITER tokamak is the next generation fusion device which will allow studying burning plasma obtained by a Deuterium-Tritium (D-T) fusion reaction during hundreds of seconds. ITER vacuum vessel real-time protection will be mandatory during plasma operation to avoid water leaks and critical plasma facing components degradation. The protection system will be based on a wide angle viewing system (WAVS) composed with 18 visible (VIS) and 18 infrared (IR) cameras covering 80 % of the vacuum vessel which will be one of the major imaging systems of ITER. Compared to protection systems routinely used on current tokamaks and based on imaging (VIS and/or IR), new constraints must be taken into account because of their influence on the system performance: the harsh environment (high neutron flux) and the metallic plasma facing components (both first wall and divertor). In this new demanding context, we have achieved three mandatory R and D studies starting from the understanding of the source of signals by using realistic photonic simulation up to real-time processing strategy taken into account first order optical design constraints to define what type of performance could be reached for ITER vacuum vessel protection. (authors)

Travere, J. M.; Aumeunier, M. H.; Joanny, M.; Jouve, M.; Martin, V.; Moncada, V.; Salasca, S. [CEA DSM, IRFM, F-13018 Saint Paul-Lez-Durance (France); Marot, L. [Univ. of Basel, Dept. of Physics, CH-4056 Basel (Switzerland); Chabaud, D. [OPTIS, ZE de la Farlede, F-83078 Toulon Cedex 9 (France); Ferme, J. J. [SESO, Pole d'Activite d'Aix en Provence, 305 Rue Louis Armand, F-13792 Aix en Provence Cedex 3 (France); Bremond, F.; Thonnat, M. [INRIA, 2004 route des Lucioles, F-06902 Sophia Antipolis Cedex (France)

2011-07-01T23:59:59.000Z

318

Improved $^{192,194,195,196}$Pt($n,?$) and $^{192}$Ir($n,?$) astrophysical reactions rates  

E-Print Network (OSTI)

$^{192}$Pt is produced solely by the slow neutron capture (\\textit{s}) nucleosynthesis process and hence an accurate ($n$,$\\gamma $) reaction rate for this nuclide would allow its use as an important calibration point near the termination of the \\textit{s}-process nucleosynthesis flow. For this reason, we have measured neutron capture and total cross sections for $% ^{192,194,195,196,nat}$Pt in the energy range from 10 eV to several hundred keV at the Oak Ridge Electron Linear Accelerator. Measurements on the other Pt isotopes were, in part, necessitated by the fact that only a relatively small $^{192}$Pt sample of modest enrichment was available. Astrophysical $% ^{192,194,195,196}$Pt($n,\\gamma $) reaction rates, accurate to approximately 3%--5 %, were calculated from these data. No accurate reaction rates have been published previously for any of these isotopes. At \\textit{s}-process temperatures, previously recommended rates are larger (by as much as 35%) and have significantly different shapes as functions of temperature, than our new rates. We used our new Pt results, together with $^{191,193}$Ir(n,$% \\gamma $) data, to calibrate nuclear statistical model calculations and hence obtain an improved rate for the unmeasured \\textit{s}-process branching-point isotope $^{192}$Ir.

P. E. Koehler; K. H. Guber

2013-09-03T23:59:59.000Z

319

-0STATE OF CALIFORNIA DATEB-IO-\\\\  

E-Print Network (OSTI)

issues. Makes recommendations to the Energy Commission regarding electricity and natural gas supply Energy Policy Report. 6. Electricity And Natural Gas Committee Presiding: Robert B. Weisemniller Associate: Carla Peterman Provides oversight and policy direction to address electricity and natural gas

320

Edison File Storage and I/O  

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

Edison scratch3 Directory Request Form Software and Tools Debugging and Profiling Performance and Optimization Chapel Shared and Dynamic Libraries Cluster Compatibility Mode Cray...

Note: This page contains sample records for the topic "io ir iq" 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.


321

OFA_NERSC_ExascaleIO.ppt  

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

processes in aquifers. Fusion: Simulations of ITER scale devices Solar: Materials for solar panels and other applications. Storage, production: Catalysis for fuel cells and...

322

Microsoft PowerPoint - Franklin System IO  

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

What is a File System? * A special-purpose database for the storage, hierarchical organization, manipulation, navigation, access, and retrieval of data. This is a layer...

323

Simulation of composite I/O automata  

E-Print Network (OSTI)

The IOA simulator is a tool that has been developed in the Theory of Distributed Systems group at MIT. This tool simulates the execution of automata described by the IOA language. It generates logs of execution traces and ...

Solovey, Edward, 1979-

2003-01-01T23:59:59.000Z

324

W51 IRS 2: A Massive Jet Emerging from a Molecular Cloud into an H II Region  

E-Print Network (OSTI)

We have mapped [Ne II] (12.8um) and [S IV] (10.5um) emission from W51 IRS 2 with TEXES on Gemini North, and we compare these data to VLA free-free observations and VLT near-infrared images. With 0.5" spatial and 4 km/s spectral resolution we are able to separate the ionized gas into several components: an extended H II region on the front surface of the molecular cloud, several embedded compact H II regions, and a streamer of high velocity gas. We interpret the high velocity streamer as a precessing or fan-like jet, which has emerged from the molecular cloud into an OB star cluster where it is being ionized.

J. H. Lacy; D. T. Jaffe; Q. Zhu; M. J. Richter; M. A. Bitner; T. K. Greathouse; K. Volk; T. R. Geballe; D. M. Mehringer

2007-02-13T23:59:59.000Z

325

Non-invasive, MRI-compatible fibreoptic device for functional near-IR reflectometry of human brain  

SciTech Connect

A non-invasive device for measuring blood oxygen variations in human brain is designed, implemented, and tested for MRI compatibility. The device is based on principles of near-IR reflectometry; power LEDs serve as sources of probing radiation delivered to patient skin surface through optical fibres. Numerical Monte Carlo simulations of probing radiation propagation in a multilayer brain model are performed to evaluate signal levels at different source - detector separations at three operation wavelengths and an additional wavelength of 915 nm. It is shown that the device can be applied for brain activity studies using power LEDs operating at 830 and 915 nm, while employment of wavelength of 660 nm requires an increased probing power. Employment of the wavelength of 592 nm in the current configuration is unreasonable. (application of lasers and laser-optical methods in life sciences)

Sorvoja, H.S.S.; Myllylae, T S; Myllylae, Risto A [University of Oulu, Optoelectronics and Measurements Techniques Laboratory (Finland); Kirillin, M Yu; Sergeeva, Ekaterina A [Institute of Applied Physics, Russian Academy of Sciences, Nizhnii Novgorod (Russian Federation); Elseoud, A A; Nikkinen, J; Tervonen, O; Kiviniemi, V [MRI Research Unit, Department of Diagnostic Radiology, Oulu University Hospital, Oulu (Finland)

2011-01-24T23:59:59.000Z

326

Revealing molecular structure and dynamics through high-order harmonic generation driven by mid-IR fields  

SciTech Connect

High-order harmonic generation (HHG) from molecules produces spectra that are modulated by interferences that encode both the static structure and the electron dynamics initiated by interaction with the laser field. Using a midinfrared (mid-IR) laser at 1300 nm, we are able to study the region of the harmonic spectrum containing such interferences in CO{sub 2} over a wide range of intensities. This allows for isolation and characterization of interference minima arising due to subcycle electronic dynamics triggered by the laser field, which had previously been identified but not systematically separated. Our experimental and theoretical results demonstrate important steps toward combining attosecond temporal and angstrom-scale spatial resolution in molecular HHG imaging.

Torres, R.; Siegel, T.; Brugnera, L.; Ivanov, M. Yu.; Marangos, J. P. [Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2BW (United Kingdom); Procino, I. [Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT (United Kingdom); Underwood, Jonathan G. [Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT (United Kingdom); Central Laser Facility, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX (United Kingdom); Altucci, C.; Velotta, R. [Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia and Dipartimento di Scienze Fisiche, Universita di Napoli 'Federico II', Naples (Italy); Springate, E.; Froud, C.; Turcu, I. C. E. [Central Laser Facility, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX (United Kingdom); Patchkovskii, S. [Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6 (Canada); Smirnova, O. [Max-Born-Institute, 2a Max-Born-Strasse, Berlin D-12489 (Germany)

2010-05-15T23:59:59.000Z

327

Exchange bias of spin valve structure with a top-pinned Co{sub 40}Fe{sub 40}B{sub 20}/IrMn  

SciTech Connect

We have investigated the exchange bias of a directly top-pinned Co{sub 40}Fe{sub 40}B{sub 20}/IrMn structure. An exchange bias was realized on the as-deposited samples, in which Co{sub 40}Fe{sub 40}B{sub 20} exhibits a fully amorphous structure. A current-in-plane giant magnetoresistance effect was demonstrated on simple Ru/CoFeB/Cu/CoFeB/IrMn/Ru stacks prior to and after annealing. The amorphous CoFeB layer partially crystallized from the interface with a Cu spacer layer after annealed at 280 deg. C.

You, C. Y.; Furubayashi, T.; Takahashi, Y. K. [National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047 (Japan); Goripati, H. S. [Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8571 Japan (Japan); Hono, K. [National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047 (Japan); Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8571 (Japan)

2008-07-07T23:59:59.000Z

328

Highly IR-transparent microfluidic chip with surface-modified BaF2 optical windows for Infrared Microspectroscopy of living cells  

Science Conference Proceedings (OSTI)

In this contribution we present the first example of a microfluidic chip based on BaF"2 for Infrared Microspectroscopy (IRMS) of living cells. The advantage in using barium fluoride as platform relies on its high IR transparency, especially in the spectral ... Keywords: Barium fluoride, IRMS, Living cells, Microfluidic

E. Mitri, A. Pozzato, G. Coceano, D. Cojoc, L. Vaccari, M. Tormen, G. Grenci

2013-07-01T23:59:59.000Z

329

Direct evidence of a zigzag spin-chain structure in the honeycomb lattice: A neutron and x-ray diffraction investigation of single-crystal Na2IrO3  

Science Conference Proceedings (OSTI)

We have combined single crystal neutron and x-ray diffractions to investigate the magnetic and crystal structures of the honeycomb lattice $\\rm Na_2IrO_3$. The system orders magnetically below $18.1(2)$~K with Ir$^{4+}$ ions forming zigzag spin chains within the layered honeycomb network with ordered moment of $\\rm 0.22(1)~\\mu_B$/Ir site. Such a configuration sharply contrasts the N{\\'{e}}el or stripe states proposed in the Kitaev-Heisenberg model. The structure refinement reveals that the Ir atoms form nearly ideal 2D honeycomb lattice while the $\\rm IrO_6$ octahedra experience a trigonal distortion that is critical to the ground state. The results of this study provide much-needed experimental insights into the magnetic and crystal structure crucial to the understanding of the exotic magnetic order and possible topological characteristics in the 5$d$-electron based honeycomb lattice.

Ye, Feng [ORNL; Chi, Songxue [ORNL; Cao, Huibo [ORNL; Chakoumakos, Bryan C [ORNL; Fernandez-Baca, Jaime A [ORNL; Custelcean, Radu [ORNL; Qi, Tongfei [University of Kentucky; Korneta, O. B. [University of Kentucky, Lexington; Cao, Gang [University of Kentucky

2012-01-01T23:59:59.000Z

330

The Role of Ir in Ternary Rh-Based Catalysts for Syngas Conversion to C2+ Oxygenates  

SciTech Connect

Transition metal modified Rh-catalysts can be used for converting syngas (CO+H2) into C2+ oxygenates. It has been found that Mn has a favorable effect in the selectivity towards oxygenates, while addition of Ir to the binary Rh-Mn catalysts significantly increases the space-time yield of C2+ oxygenates. In this paper, we use quantum mechanical calculations to investigate the distribution of promoter sites within Rh rich nanoparticles and their role in the conversion of syngas towards ethanol. This work was supported by the U.S. Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy Biomass Program. The Pacific Northwest National Laboratory (PNNL) is operated by Battelle for the DOE under Contract DE-AC05-76RL01830. A portion of the research was performed in the Environmental Molecular Sciences Laboratory (EMSL), a national science user facility sponsored by the Department of Energy’s Office of Biological and Environmental Research located at PNNL.

Glezakou, Vassiliki Alexandra; Jaffe, John E.; Rousseau, Roger J.; Mei, Donghai; Kathmann, Shawn M.; Albrecht, Karl O.; Gray, Michel J.; Gerber, Mark A.

2012-07-09T23:59:59.000Z

331

NY-%-3 P  

Office of Legacy Management (LM)

NY-%-3 NY-%-3 P m F P F ?- P m ?- c m P P CII (I pl F F- 3?r -J-J-. _- /, i ;. / 0 Aerospace Report No. ATR-82 (796344-2 i Aq, is y !i,' Evaluation of the 1943Hto# 1946 ilid Liquid Effluent Discharge From the Linde Air Products Company Ceramics Plant December 198 I Prepared for Office of Operational Safety Assistant Secretary for Environmental Protection, Safety, and Emergency Preparedness U.S. DEPARTMENT OF ENERGY Prepared by Environment and Conservation Directorate Eastern Technical Division THE AEROSPACE CORPORATION Germantown, Maryland Contract No. DE-ACOP-81EV10532 I- ,- A e r o s p a c e R e p o r t N o . A T R - 8 2 ( 7 9 6 3 - 0 4 ) - 2 E V A L U A T IO N O F T H E 1 9 4 3 - T O - 1 9 4 6 L IQ U ID E F F L U E N T D IS C H A R G E F R O M T H E L INDE A IR P R O D U C T S C O M P A N Y C E R A M ICS P L A N T D e c e m b e r 1 9 8 1 P r e p a r e d for O

332

Ir I L  

Office of Legacy Management (LM)

LIST OF FIGURES LIST OF FIGURES 1 2 General location of the Granite City Steel Facility' Granite City, Illinois . . . View of the betatron building, looking south . ' ' 3 View o[ the betatron building, looking west . ' ' ' ' ' 11 4 Diagram of the ground floor of the betatron building ' 5 Photo showing the larger of the two betatrons (no. 1, Fig. ) 6 View of transformer storage area inside the betatron building 7 Directly measured radiation levels inside the betatron building, first level 8 Results of directly measured radiation levels taken in the betatron building, second level . Industrial vacuum cleaner having elevated radiation levels and radionuclide concentrations . I-ocations of smears, and indoor dust and debris samples Results of direct radiation measurements and locations

333

Ir I L  

Office of Legacy Management (LM)

*- -I ..' -I I... "- II .- (1 "^ 1 6 7 8 9 10 11 LIST O F FIGURES General location of the Granite City Steel Facility , Granite City , Illinois . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 View of the betatron building, look ing south . . . . . . . . . . . . . . . . . . . 10 View of the betatron building, look ing west . . . . . . . . . . . . . . . . . . . . . 11 Diagram of the ground floor of the betatron building . . . . . . . . . . . . . . 12 Photo showing the larger of the two betatrons (no. 1, Fig. 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 View of transformer s torage area ins ide the betatron building . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

334

Phototoxic effect of conjugates of plasmon-resonance nanoparticles with indocyanine green dye on Staphylococcus aureus induced by IR laser radiation  

Science Conference Proceedings (OSTI)

The effect of IR laser radiation ({lambda} = 805 - 808 nm) on the bacteria of the strain Staphylococcus aureus 209 P, incubated in indocyanine green solutions, is studied, as well as that of colloid gold nanoshells, nanocages and their conjugates with indocyanine green. It is found that the S. aureus 209 P cells are equally subjected to the IR laser radiation ({lambda} = 805 nm) after preliminary sensitisation with indocyanine green and gold nanoparticles separately and with conjugates of nanoparticles and indocyanine green. The enhancement of photodynamic and photothermal effects by 5 % is observed after 30 min of laser illumination ({lambda} = 808 nm) of bacteria, treated with conjugates of indocyanine green and nanocages. (optical technologies in biophysics and medicine)

Tuchina, E S; Tuchin, Valerii V; Khlebtsov, B N; Khlebtsov, Nikolai G

2011-04-30T23:59:59.000Z

335

The properties of (sub)millimetre-selected galaxies as revealed by CANDELS HST WFC3/IR imaging in GOODS-South  

E-Print Network (OSTI)

We have exploited the HST CANDELS WFC3/IR imaging to study the properties of (sub-)mm galaxies in GOODS-South. After using the deep radio and Spitzer imaging to identify galaxy counterparts for the (sub-)mm sources, we have used the new CANDELS data in two ways. First, we have derived improved photometric redshifts and stellar masses, confirming that the (sub-)mm galaxies are massive (=2.2x10^11 M_solar) galaxies at z=1-3. Second, we have exploited the depth and resolution of the WFC3/IR imaging to determine the sizes and morphologies of the galaxies at rest-frame optical wavelengths, fitting two-dimensional axi-symmetric Sersic models. Crucially, the WFC3/IR H-band imaging enables modelling of the mass-dominant galaxy, rather than the blue high-surface brightness features which often dominate optical (rest-frame UV) images of (sub-)mm galaxies, and can confuse visual morphological classification. As a result of this analysis we find that >95% of the rest-frame optical light in almost all of the (sub-)mm gala...

Targett, T A; Cirasuolo, M; McLure, R J; Bruce, V A; Fontana, A; Galametz, A; Paris, D; Davé, R; Dekel, A; Faber, S M; Ferguson, H C; Grogin, N A; Kartaltepe, J S; Kocevski, D D; Koekemoer, A M; Kurczynski, P; Lai, K; Lotz, J

2012-01-01T23:59:59.000Z

336

{sup 45}Sc Solid State NMR studies of the silicides ScTSi (T=Co, Ni, Cu, Ru, Rh, Pd, Ir, Pt)  

SciTech Connect

The silicides ScTSi (T=Fe, Co, Ni, Cu, Ru, Rh, Pd, Ir, Pt) were synthesized by arc-melting and characterized by X-ray powder diffraction. The structures of ScCoSi, ScRuSi, ScPdSi, and ScIrSi were refined from single crystal diffractometer data. These silicides crystallize with the TiNiSi type, space group Pnma. No systematic influences of the {sup 45}Sc isotropic magnetic shift and nuclear electric quadrupolar coupling parameters on various structural distortion parameters calculated from the crystal structure data can be detected. {sup 45}Sc MAS-NMR data suggest systematic trends in the local electronic structure probed by the scandium atoms: both the electric field gradients and the isotropic magnetic shifts relative to a 0.2 M aqueous Sc(NO{sub 3}){sub 3} solution decrease with increasing valence electron concentration and within each T group the isotropic magnetic shift decreases monotonically with increasing atomic number. The {sup 45}Sc nuclear electric quadrupolar coupling constants are generally well reproduced by quantum mechanical electric field gradient calculations using the WIEN2k code. Highlights: Black-Right-Pointing-Pointer Arc-melting synthesis of silicides ScTSi. Black-Right-Pointing-Pointer Single crystal X-ray data of ScCoSi, ScRuSi, ScPdSi, and ScIrSi. Black-Right-Pointing-Pointer {sup 45}Sc solid state NMR of silicides ScTSi.

Harmening, Thomas [Institut fuer Anorganische und Analytische Chemie and NRW Graduate School of Chemistry, Universitaet Muenster, Corrensstrasse 30, D-48149 Muenster (Germany); Eckert, Hellmut, E-mail: eckerth@uni-muenster.de [Institut fuer Physikalische Chemie, Universitaet Muenster, Corrensstrasse 30, D-48149 Muenster (Germany); Fehse, Constanze M. [Institut fuer Physikalische Chemie, Universitaet Muenster, Corrensstrasse 30, D-48149 Muenster (Germany); Sebastian, C. Peter, E-mail: sebastiancp@jncasr.ac.in [New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064 (India); Poettgen, Rainer, E-mail: pottgen@uni-muenster.de [Institut fuer Anorganische und Analytische Chemie and NRW Graduate School of Chemistry, Universitaet Muenster, Corrensstrasse 30, D-48149 Muenster (Germany)

2011-12-15T23:59:59.000Z

337

Terrace-like structure in the above-threshold ionization spectrum of an atom in an IR+XUV two-color laser field  

E-Print Network (OSTI)

Based on the frequency-domain theory, we investigate the above-threshold ionization (ATI) process of an atom in a two-color laser field with infrared (IR) and extreme ultraviolet (XUV) frequencies, where the photon energy of the XUV laser is close to or larger than the atomic ionization threshold. By using the channel analysis, we find that the two laser fields play different roles in an ionization process, where the XUV laser determines the ionization probability by the photon number that the atom absorbs from it, while the IR laser accelerates the ionized electron and hence widens the electron kinetic energy spectrum. As a result, the ATI spectrum presents a terrace-like structure. By using the saddle-point approximation, we obtain a classical formula which can predict the cutoff of each plateau in the terrace-like ATI spectrum. Furthermore, we find that the difference of the heights between two neighboring plateaus in the terrace-like structure of the ATI spectrum increases as the frequency of the XUV lase...

Zhang, Kui; Fu, Panming; Yan, Zong-Chao; Wang, Bingbing

2013-01-01T23:59:59.000Z

338

Very blue UV-continuum slopes of low luminosity z~7 galaxies from WFC3/IR: Evidence for extremely low metallicities?  

E-Print Network (OSTI)

We use the ultra-deep WFC3/IR data over the HUDF and the Early Release Science WFC3/IR data over the CDF-South GOODS field to quantify the broadband spectral properties of star-forming galaxies at z~7. We determine the UV-continuum slope beta in these galaxies, and compare the slopes with galaxies at later times to measure the evolution in beta. For luminous L*(z=3) galaxies, we measure a mean UV-continuum slope beta of -2.0+/-0.2, which is comparable to the beta~-2 derived at similar luminosities at z~5-6. However, for the lower luminosity 0.1L*(z=3) galaxies, we measure a mean beta of -3.0+/-0.2. This is substantially bluer than is found for similar luminosity galaxies at z~4, just 800 Myr later, and even at z~5-6. In principle, the observed beta of -3.0 can be matched by a very young, dust-free stellar population, but when nebular emission is included the expected beta becomes >~-2.7. To produce these very blue beta's (i.e., beta~-3), extremely low metallicities and mechanisms to reduce the red nebular emi...

Bouwens, R J; Oesch, P A; Trenti, M; Stiavelli, M; Carollo, M; Franx, M; Van Dokkum, P G; Labbé, I; Magee, D

2009-01-01T23:59:59.000Z

339

Asymptotically-Equal-To 10 eV ionization shift in Ir K{alpha}{sub 2} from a near-coincident Lu K-edge  

SciTech Connect

Close to an x-ray filter's K-edge the transmission depends strongly on the photon energy. For a few atom pairs, the K-edge of one is only a few tens of eV higher than a K-line energy of another, so that a small change in the line's energy becomes a measurable change in intensity behind such a matching filter. Lutetium's K-edge is Asymptotically-Equal-To 27 eV above iridium's K{alpha}{sub 2} line, Asymptotically-Equal-To 63.287 keV for cold Ir. A Lu filter reduces this line's intensity by Asymptotically-Equal-To 10 % when it is emitted by a plasma, indicating an ionization shift {Delta}E Asymptotically-Equal-To 10{+-}1 eV.

Pereira, N. R. [Ecopulse, Inc, P.O. Box 528, Springfield, Virginia 22150 (United States); Weber, B. V.; Phipps, D.; Schumer, J. W. [Naval Research Laboratory, Washington, DC 20375 (United States); Seely, J. F. [Artep Inc., 2922 Excelsior Springs Ct, Ellicott City, Maryland 21042 (United States); Carroll, J. J. [Army Research Laboratory, Adelphi, Maryland 20873 (United States); VanHoy, J. R. [United States Naval Academy, Annapolis, Maryland 21402 (United States); Slabkowska, K.; Polasik, M. [Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7, 87-100 Torun (Poland)

2012-10-15T23:59:59.000Z

340

Mass spectrometric study of high-temperature dehydroxylation of disperse silicas and the interpretation of their IR spectra in the region of Si-O stretching vibrations  

SciTech Connect

Field-desorption mass spectrometry has been used to determine the lower boundary of the temperature interval for the removal of surface hydroxyl groups of aerosil. Both in the regime of cation desorption and in the regime of anion desorption, at temperatures above 900/sup 0/K, OH ions of the corresponding sign are registered. It is concluded that the thermal decomposition of the surface bonds triple bond Si-OH is homolytic in character. A mechanism is proposed for the dehydroxylation of SiO/sub 2/, according to which the initially formed radical centers triple bond Si and triple bond SiO change into ions: triple bond Si/sup +/ (I) and triple bond SiO/sup -/ (II). The bands at 888 and 908 cm/sup -1/ in the IR spectra of silicas obtained at high temperatures are assigned to vibrations of Si-O bonds in I and II, respectively.

Nazarenko, V.A.; Furman, V.I.; Guzikevich, A.G.; Gorlov, Yu.I.

1985-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "io ir iq" 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

Experimental determination of the radial dose distribution in high gradient regions around {sup 192}Ir wires: Comparison of electron paramagnetic resonance imaging, films, and Monte Carlo simulations  

SciTech Connect

Purpose: The experimental determination of doses at proximal distances from radioactive sources is difficult because of the steepness of the dose gradient. The goal of this study was to determine the relative radial dose distribution for a low dose rate {sup 192}Ir wire source using electron paramagnetic resonance imaging (EPRI) and to compare the results to those obtained using Gafchromic EBT film dosimetry and Monte Carlo (MC) simulations. Methods: Lithium formate and ammonium formate were chosen as the EPR dosimetric materials and were used to form cylindrical phantoms. The dose distribution of the stable radiation-induced free radicals in the lithium formate and ammonium formate phantoms was assessed by EPRI. EBT films were also inserted inside in ammonium formate phantoms for comparison. MC simulation was performed using the MCNP4C2 software code. Results: The radical signal in irradiated ammonium formate is contained in a single narrow EPR line, with an EPR peak-to-peak linewidth narrower than that of lithium formate ({approx}0.64 and 1.4 mT, respectively). The spatial resolution of EPR images was enhanced by a factor of 2.3 using ammonium formate compared to lithium formate because its linewidth is about 0.75 mT narrower than that of lithium formate. The EPRI results were consistent to within 1% with those of Gafchromic EBT films and MC simulations at distances from 1.0 to 2.9 mm. The radial dose values obtained by EPRI were about 4% lower at distances from 2.9 to 4.0 mm than those determined by MC simulation and EBT film dosimetry. Conclusions: Ammonium formate is a suitable material under certain conditions for use in brachytherapy dosimetry using EPRI. In this study, the authors demonstrated that the EPRI technique allows the estimation of the relative radial dose distribution at short distances for a {sup 192}Ir wire source.

Kolbun, N.; Leveque, Ph.; Abboud, F.; Bol, A.; Vynckier, S.; Gallez, B. [Biomedical Magnetic Resonance Unit, Louvain Drug Research Institute, Universite catholique de Louvain, Avenue Mounier 73.40, B-1200 Brussels (Belgium); Molecular Imaging and Experimental Radiotherapy Unit, Institute of Experimental and Clinical Research, Universite catholique de Louvain, Avenue Hippocrate 55, B-1200 Brussels (Belgium); Biomedical Magnetic Resonance Unit, Louvain Drug Research Institute, Universite catholique de Louvain, Avenue Mounier 73.40, B-1200 Brussels (Belgium)

2010-10-15T23:59:59.000Z

342

INTERBRAND IQ ISSUE 02: CORPORATE CITIZENSHIP 2928 INTERBRAND IQ ISSUE 02: CORPORATE CITIZENSHIP HOW DO WE MAKE PROGRESS IN A WORLD  

E-Print Network (OSTI)

to drill in ANWR." These organizations are very complex, and to paint one with one single broad brush

Hoffman, Andrew J.

343

Chains of centered metal clusters with a novel range of distortions: Pr[sub 3]I[sub 3]Ru, Y[sub 3]I[sub 3]Ru, and Y[sub 3]I[sub 3]Ir  

SciTech Connect

The phases R[sub 3]I[sub 3]Ru (R = La, Pr, Gd, Y, Er) and R[sub 3]I[sub 3]Ir (R = Gd, Y) are obtained from the reactions of R, RI[sub 3], and Ru or Ir for 3-4 weeks in sealed Ta tubing at 850-975C, depending on the system. The title phases have been characterized by single-crystal X-ray means at room temperature. The first phase contains quasi-infinite double chains of edge-sharing Pr[sub 6](Ru) octahedra that are sheathed and interbridged by iodine. An evidently continuous distortion of these chains parallels the a/b axial ratio (in the order listed in the first sentence) such that metal octahedra are no longer obvious in Y[sub 3]I[sub 3]Ir; rather chains of trans-edge-sharing square pyramidal Y[sub 4]Ir units bonded base-to-base are more apt. Increased R-R, R-interstitial, and interstitial-interstitial bonding appears to parallel the degree of distortion. Magnetic data for La[sub 3]I[sub 3]Ru and Pr[sub 3]I[sub 3]Ru and the results of extended Hueckel band calculations on Pr[sub 3]I[sub 3]Ru are reported. Polar covalent Pr-Ru interactions and at least a quasi-closed shell configuration are emphasized by the latter.

Payne, M.W.; Dorhout, P.K.; Kim, Sungjin; Hughbanks, T.R.; Corbett, J.D. (Iowa State Univ., Ames (United States) Texas A and M Univ., College Station (United States))

1992-04-15T23:59:59.000Z

344

Bridging HPC and grid file i/o with IOFSL  

Science Conference Proceedings (OSTI)

Traditionally, little interaction has taken place between the Grid and high-performance computing (HPC) storage research communities. Grid research often focused on optimizing data accesses for high-latency, wide-area networks, while HPC research focused ...

Jason Cope; Kamil Iskra; Dries Kimpe; Robert Ross

2010-06-01T23:59:59.000Z

345

Better I/O through byte-addressable, persistent memory  

Science Conference Proceedings (OSTI)

Modern computer systems have been built around the assumption that persistent storage is accessed via a slow, block-based interface. However, new byte-addressable, persistent memory technologies such as phase change memory (PCM) offer fast, fine-grained ... Keywords: file systems, performance, phase change memory

Jeremy Condit; Edmund B. Nightingale; Christopher Frost; Engin Ipek; Benjamin Lee; Doug Burger; Derrick Coetzee

2009-10-01T23:59:59.000Z

346

Model predictive control equalization for high-speed IO links  

E-Print Network (OSTI)

The demand for bandwidth in chip-to-chip communication has been increasing as the industry demands higher quantity and quality of information. Serial links provide a suitable architecture for this kind of transmission, ...

Suleiman, Amr S. (Amr AbdulZahir)

2013-01-01T23:59:59.000Z

347

Parallel I/O Support for HPF on Computational Grids  

Science Conference Proceedings (OSTI)

Recently several projects have started to implement largescale high-performance computing on "computational grids" composed of heterogeneous and geographically distributed systems of computers, networks, and storage devices that collectively act as a ...

Peter Brezany; Jonghyun Lee; Marianne Winslett

2002-05-01T23:59:59.000Z

348

Accelerating I/O Processing in Server Architectures  

E-Print Network (OSTI)

overhead of 0.18% (two extra bits required for each cache lineoverhead of 0.18% (two extra bits required for each cache linefor a line rate bandwidth). The high overhead motivates us

Liao, Guangdeng

2011-01-01T23:59:59.000Z

349

Darshan: HPC I/O Characterization Tool | Argonne National Laboratory  

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

Ross People Involved Phil Carns Kamil Iskra Robert Latham Other Contributors Kevin Harms (ALCF) Funding Sources DOE ASCR Related Group(s) Data-Intensive Science Website URL Darshan...

350

Characterizing I/O performance on leadership-class systems |...  

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

HPC production applications. Initially run at the IBM Blue Gene systems at the Argonne Leadership Computing Facility, Darshan recently was adapted by Argonne researchers,...

351

Mobile Device Management iOS Device Enrollment  

E-Print Network (OSTI)

Setup Instructions 2. Get the App from the Apple App Store a. Launch the App Store. b. Search Enroll app. b. Click Enroll. #12;c. Enter your LSUHSC email address. d. Tap Next. e. Enter your LSUHSC password. f. Tap Next. g. Accept the Terms and Conditions. 4. Tap 1 - Install Company Profile. #12;a. Tap

352

Microsoft Word - Johnston.IOS.Network Communication as a Service...  

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

diagnostic transparency, etc. * Robustness and stability (network reliability) are essential. Large-scale investment in science facilities and experiments makes network...

353

Verifiable compilation of I/O automata without global synchronization  

E-Print Network (OSTI)

Part I of this thesis presents a strategy for compiling distributed systems specified in IOA into Java programs running on a group of networked workstations. IOA is a formal language for describing distributed systems as ...

Tauber, Joshua A. (Joshua Allen)

2005-01-01T23:59:59.000Z

354

Petascale I/O: challenges, solutions, and recommendations  

Science Conference Proceedings (OSTI)

Computing platforms over the past decade have quickly traversed the teraflop regime and have entered the petaflop era by exploiting higher processor clock frequencies, increasingly multi-core processors, and various accelerator technologies. However, ...

Lonnie D. Crosby; Rick Mohr

2012-07-01T23:59:59.000Z

355

A memento web browser for iOS  

Science Conference Proceedings (OSTI)

The Memento framework allows web browsers to request and view archived web pages in a transparent fashion. However, Memento is still in the early stages of adoption, and browser-plugins are often required to enable Memento support. We report on a new ... Keywords: memento, mobile web, web archiving, web browser

Heather Tweedy; Frank McCown; Michael L. Nelson

2013-07-01T23:59:59.000Z

356

Efficient I/O Scheduling in Tertiary Libraries  

Science Conference Proceedings (OSTI)

With the recent improvements in network and processor speeds, several data intensive applications have become much more feasible than ever before. The only practical solution for storing such enormous amounts of data is tertiarystorage. Automated access ...

Sunil Prabhakar; Divyakant Agrawal; Amr El Abbadi; Ambuj Singh

1996-10-01T23:59:59.000Z

357

I/O Performance of Virtualized Cloud Environments  

E-Print Network (OSTI)

consistency. On systems such as NERSC, often there are twoMagellan compute resources at NERSC. Magellan is a 720 nodeagainst a high-speed NERSC file-system, Global Scratch. This

Ghoshal, Devarshi

2013-01-01T23:59:59.000Z

358

INFORMATION WARFARE AND INFORMATION OPERATIONS (IW/IO)  

E-Print Network (OSTI)

United States Office of Air and Radiation EPA 402-R-04-002C Environmental Protection Agency July Interagency Agreement No. DW89937220-01-7 Project Officer Ronald G. Wilhelm Office of Radiation and Indoor Air sources all over the United States. Elizabeth A. Cotsworth, Director Office of Radiation and Indoor Air

359

EPICS: Allen-Bradley hardware reference manual  

SciTech Connect

This manual covers the following hardware: Allen-Bradley 6008 -- SV VMEbus I/O scanner; Allen-Bradley universal I/O chassis 1771-A1B, -A2B, -A3B, and -A4B; Allen-Bradley power supply module 1771-P4S; Allen-Bradley 1771-ASB remote I/O adapter module; Allen-Bradley 1771-IFE analog input module; Allen-Bradley 1771-OFE analog output module; Allen-Bradley 1771-IG(D) TTL input module; Allen-Bradley 1771-OG(d) TTL output; Allen-Bradley 1771-IQ DC selectable input module; Allen-Bradley 1771-OW contact output module; Allen-Bradley 1771-IBD DC (10--30V) input module; Allen-Bradley 1771-OBD DC (10--60V) output module; Allen-Bradley 1771-IXE thermocouple/millivolt input module; and the Allen-Bradley 2705 RediPANEL push button module.

Nawrocki, G.

1993-04-05T23:59:59.000Z

360

Microsoft Word - S07118_IR  

Office of Legacy Management (LM)

Annual Inspection of the Annual Inspection of the DOE Monticello, Utah, Mill Tailings Site and Monticello Vicinity Properties December 2010 LMS/MNT/S07118 This page intentionally left blank LMS/MNT/S07118 2010 Annual Inspection of the DOE Monticello, Utah, Mill Tailings Site and Monticello Vicinity Properties December 2010 This page intentionally left blank U.S. Department of Energy 2010 Annual Inspection-Monticello, Utah December 2010 Doc. No. S07118 Page i Contents Executive Summary ....................................................................................................................... iii 1.0 Introduction ............................................................................................................................1

Note: This page contains sample records for the topic "io ir iq" 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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361

Broadly tunable picosecond ir source  

DOE Patents (OSTI)

A picosecond traveling-wave parametric device capable of controlled spectral bandwidth and wavelength in the infrared is reported. Intense 1.064 ..mu..m picosecond pulses (1) pass through a 4.5 cm long LiNbO/sub 3/ optical parametric oscillator crystal (2) set at its degeneracy angle. A broad band emerges, and a simple grating (3) and mirror (4) arrangement is used to inject a selected narrow-band into a 2 cm long LiNbO/sub 3/ optical parametric amplifier crystal (5) along a second pump line. Typical input energies at 1.064 ..mu..m along both pump lines are 6 to 8 mJ for the oscillator and 10 mJ for the amplifier. This yields 1 mJ of tunable output in the range 1.98 to 2.38 ..mu..m which when down-converted in a 1 cm long CdSe crystal mixer (6) gives 2 ..mu..J of tunable radiation over the 14.8 to 18.5 ..mu..m region. The bandwidth and wavelength of both the 2 and 16 ..mu..m radiation output are controlled solely by the diffraction grating.

Campillo, A.J.; Hyer, R.C.; Shapiro, S.L.

1980-04-23T23:59:59.000Z

362

Broadly tunable picosecond IR source  

DOE Patents (OSTI)

A picosecond traveling-wave parametric device capable of controlled spectral bandwidth and wavelength in the infrared is reported. Intense 1.064 .mu.m picosecond pulses (1) pass through a 4.5 cm long LiNbO.sub.3 optical parametric oscillator crystal (2) set at its degeneracy angle. A broad band emerges, and a simple grating (3) and mirror (4) arrangement is used to inject a selected narrow-band into a 2 cm long LiNbO.sub.3 optical parametric amplifier crystal (5) along a second pump line. Typical input energies at 1.064 .mu.m along both pump lines are 6-8 mJ for the oscillator and 10 mJ for the amplifier. This yields 1 mJ of tunable output in the range 1.98 to 2.38 .mu.m which when down-converted in a 1 cm long CdSe crystal mixer (6) gives 2 .mu.J of tunable radiation over the 14.8 to 18.5 .mu.m region. The bandwidth and wavelength of both the 2 and 16 .mu.m radiation output are controlled solely by the diffraction grating.

Campillo, Anthony J. (Nesconset, NY); Hyer, Ronald C. (Los Alamos, NM); Shapiro, Stanley J. (Los Alamos, NM)

1982-01-01T23:59:59.000Z

363

Aft!'-',, ,?i.Q<, A lFBLE COPY .... ^ -. v' ^ 0  

E-Print Network (OSTI)

. WARM AIR Space conditioning equipment, e.g., chillers based on absorption EXIT cycle principle, were developed along technology lines, such as engine-driven and h heater T c Q ondenser absorption heat pumps pumps include engine-driven heat pumps, absorption cycle, and ejector heat pumps. CURRENT RESEARCH

Oak Ridge National Laboratory

364

InfoIQ: A service offering of UCLA Anderson Computing and Information Services  

E-Print Network (OSTI)

growing information, communication and technology landscapeabout information, communication and technology in practicalof communication and information technology coupled with an

Lippincott, Aura; Kuchida, Hiro

2005-01-01T23:59:59.000Z

365

Power Quality for T&D: Grid IQ Circuit Analysis Using 2030 Load Mix Projections  

Science Conference Proceedings (OSTI)

One of the key sources of harmonic injections into the distribution systems is usage of power electronics in residential and commercial loads, and the proportion of power electronics-based loads can be expected to increase in the future. This expectation is supported by data on projected trends in electricity consumption for different load types in both residential and commercial categories for 2010–2035 published in Annual Energy Outlook 2011 with Projections to 2035 by the U.S. ...

2012-12-06T23:59:59.000Z

366

I!' L;I)  

Office of Legacy Management (LM)

".>;jy i.jp. i,Zz>-c C,+;) ir,i:%J :' 0 p 'd-i I ) f) ic.c iq -.I ,'c i - * w. 3'2 , phi ': r-t;, ; *.i .; I' L;I) --, -II s;.,yE;J-,;* I' ;, f: >,p.yg ,p ' .L (3 i>;'...

367

X-rays and regions of star formation: a combined ROSAT-HRI/near-to-mid IR study of the rho Oph dark cloud  

E-Print Network (OSTI)

We have obtained two deep exposures of the rho Oph cloud core region with the ROSAT HRI. The improved position accuracy (1"-6") with respect to previous recent X-ray observations (ROSAT PSPC, and ASCA) allows us to remove positional ambiguities for the detected sources. We also cross-correlate the X-ray positions with IR sources found in the ISO-ISOCAM survey of the same region at 6.7 and 14.3 \\mum, in addition to sources known from ground-based observations, which are young stars. We find that there is no statistically significant difference between the X-ray luminosity functions of HRI-detected Class II and Class III sources, i.e., T Tauri stars with and without disks, confirming that the contribution of these disks to X-ray emission or absorption, must be small. Most of the sources are variable, and their variability is consistent with a solar-like (hence magnetic) flare origin. We use the information given both by the ISOCAM survey and by our HRI deep exposure to study the T Tauri star population of the rho Oph dense cores. We confirm that essentially all Class II and Class III sources are X-ray emitters, and that a strong correlation exists between their X-ray luminosity, L_X, and their stellar luminosity, L_*, with L_X/L_* ~ 1E-4. Most of the new ISOCAM Class II sources are not detected, however, which we explain by the fact that their X-ray luminosities ``predicted'' on the basis of this correlation are too faint to be detected by the HRI. We predict that ~40 unknown faint or embedded Class III sources remain to be discovered in X-rays in the HRI/ISOCAM overlapping area, down to a limit of L_X ~ 3 \\times 1E28 erg/s. We show that the bulk of these unknown Class III sources should be made of low- to very low-mass stars. Prospects for future detections with XMM-Newton and Chandra are discussed.

Nicolas Grosso; Thierry Montmerle; Sylvain Bontemps; Philippe Andre; Eric D. Feigelson

2000-05-19T23:59:59.000Z

368

No compelling evidence of distributed production of CO in comet C/1995 O1 (Hale-Bopp) from millimeter interferometric data and a reanalysis of near-IR lines  

E-Print Network (OSTI)

Based on long-slit infrared spectroscopic observations, it has been suggested that half of the carbon monoxide present in the atmosphere of comet C/1995 O1 (Hale-Bopp) close to perihelion was released by a distributed source in the coma, whose nature (dust or gas) remains unidentified. We re-assess the origin of CO in Hale-Bopp's coma from millimeter interferometric data and a re-analysis of the IR lines. Simultaneous observations of the CO J(1-0) (115 GHz) and J(2-1) (230 GHz) lines were undertaken with the IRAM interferometer in single-dish and interferometric modes. The diversity of angular resolutions (from 1700 to 42000 km diameter at the comet) is suitable to study the radial distribution of CO and detect the extended source observed in the infrared. We used excitation and radiative transfer models to simulate the observations. Various CO density distributions were considered, including 3D time-dependent hydrodynamical simulations which reproduce a CO rotating jet. The CO J(1-0) and J(2-1) observations ...

Bockelée-Morvan, D; Biver, N; Crovisier, J

2010-01-01T23:59:59.000Z

369

5/25/11 10:26 PMMoms Exposed to Pesticides Can Lower Their Children's IQ | Page 1 of 2http://healthland.time.com/2011/04/21/exposure-to-pesticides-in-pregnancy-can-lower-childrens-iq/print/  

E-Print Network (OSTI)

their developing baby. And that includes pesticides, from the kind that farmers spray on fruit and vegetable crops because while others have linked pesticide exposure to potential developmental effects your exposure to pesticides by avoiding crops treated with the chemicals. But if you can't afford

370

Microsoft Word - S05949_IR.doc  

Office of Legacy Management (LM)

Annual Inspection of the Annual Inspection of the Monticello Mill Tailings (USDOE) and Monticello Radioactively Contaminated Properties Sites December 2009 LMS/MNT/S05949 This page intentionally left blank LMS/MNT/S05949 2009 Annual Inspection of the Monticello Mill Tailings (USDOE) and Monticello Radioactively Contaminated Properties Sites December 2009 This page intentionally left blank U.S. Department of Energy 2009 Annual Inspection-Monticello, Utah December 2009 Doc. No. S05949 Page i Contents Executive Summary....................................................................................................................... iii 1.0 Introduction ............................................................................................................................1

371

NN potentials from IR chiral EFT  

E-Print Network (OSTI)

Chiral perturbation theory is nowadays a well-established approach to incorporate the chiral constraints from QCD. Nevertheless, for systems involving one baryon, the power counting which dictates the chiral order of observables is not as simple and consensual as in the purely mesonic case. The heavy baryon approach, which relies on a non-relativistic expansion around the limit of infinitely heavy baryon, recovers the usual power counting but destroys some analytic properties of the scattering amplitude. Some years ago, Becher and Leutwyler proposed a Lorentz-invariant formulation of chiral perturbation theory that maintains the required analytic properties, but at the expense of a less intuitive power counting. Aware of the shortcomings of the heavy baryon formalism, the S\\~ao Paulo group derived the two-pion exchange component of the nucleon-nucleon potential in line with the works of Becher and Leutwyler. A striking result was that the long distance properties of the potential is determined by the specific low energy region of the pion-nucleon scattering amplitude where the heavy baryon expansion fails. In this talk I will discuss the origin of such failure and how it reflects in the asymptotics of the nucleon-nucleon interaction. Some results for phase shifts and deuteron properties will be shown, followed by a comparison with the heavy baryon predictions.

Renato Higa

2009-08-30T23:59:59.000Z

372

Confronting global issues: a multipurpose IR simulation  

Science Conference Proceedings (OSTI)

This article describes an international relations simulation that focuses on threats of transnational insurgent organizations, the future of the Iraqi regime, and the effect of globalization on foreign policies. It contains both the Simulation Director's ... Keywords: Iraq, foreign policy, globalization, international conflict, international relations simulations, negotiation, terrorism

Stephen M. Shellman; Kürsad Turan

2006-03-01T23:59:59.000Z

373

Microsoft Word - S08313_IR_Final  

Office of Legacy Management (LM)

in either area was apparent in 2011 (Photos 3 and 4). One small U.S. Department of Energy 2011 Annual Inspection-Monticello, Utah November 2011 Doc. No. S08313 Page 7 elm...

374

IR250 Micro-Turbine Case Study  

Science Conference Proceedings (OSTI)

Microturbines first entered the distributed generation market in the late 1990s. Since then, vendors have continued to introduce new models, generally greater in capacity. In 2004, Ingersoll Rand Energy Systems (IRES) began shipping a 250-kW microturbine. This report is case study of the first unit that IRES shipped.

2006-03-21T23:59:59.000Z

375

NIST IR 7609, Cryptographic Key Management Workshop ...  

Science Conference Proceedings (OSTI)

... Due to severe weather in the Gaithersburg area ... and control networks, due to energy constraints, and ... for all credit card companies, plus large-scale ...

2012-03-01T23:59:59.000Z

376

New developments in IR surface vibrational spectroscopy  

DOE Green Energy (OSTI)

Low frequency dynamics at surfaces, particularly in the region of the adsorbate-substrate vibrational modes is of fundamental importance in areas as varied as sliding friction, catalysis, corrosion and epitaxial growth. This paper reviews the new developments in low frequency Infrared Reflection Absorption Spectroscopy using synchrotron radiation as the source. Absolute changes induced in the far infrared for several adsorbate systems on Cu, including CO and H, are dominated by broadband reflectance changes and dipole forbidden vibrational modes which in some cases are an order of magnitude stronger than the dipole allowed modes. The experimental data can be explained by a theory developed by Persson, in which the dielectric response of the substrate is seen as playing a crucial role in the dynamics. In particular the relationships between the wavelength of the light, the penetration depth and the electron mean-free path, are critical.

Hirschmugl, C.J.; Lamont, C.L.A.; Williams, G.P. [Brookhaven National Lab., Upton, NY (United States). National Synchrotron Light Source

1995-12-31T23:59:59.000Z

377

NIST Wavenumbers for Calibration of IR Spectrometers  

Science Conference Proceedings (OSTI)

... band. Data from these complementary techniques include the best Fourier transform measurements available. The bibliography ...

2011-12-09T23:59:59.000Z

378

Translating timed I/O automata specifications for theorem proving in PVs  

E-Print Network (OSTI)

The timed input/output automaton modeling framework is a mathematical framework for specification and analysis of systems that involve discrete and continuous evolution. In order to employ an interactive theorem prover in ...

Lim, Hongping

2006-01-01T23:59:59.000Z

379

Internet of Things (IoT): A vision, architectural elements, and future directions  

Science Conference Proceedings (OSTI)

Ubiquitous sensing enabled by Wireless Sensor Network (WSN) technologies cuts across many areas of modern day living. This offers the ability to measure, infer and understand environmental indicators, from delicate ecologies and natural resources to ... Keywords: Cloud computing, Internet of Things, RFID, Smart environments, Ubiquitous sensing, Wireless sensor networks

Jayavardhana Gubbi, Rajkumar Buyya, Slaven Marusic, Marimuthu Palaniswami

2013-09-01T23:59:59.000Z

380

Parallel I/O, analysis, and visualization of a trillion particle simulation  

Science Conference Proceedings (OSTI)

Petascale plasma physics simulations have recently entered the regime of simulating trillions of particles. These unprecedented simulations generate massive amounts of data, posing significant challenges in storage, analysis, and visualization. In this ...

Surendra Byna; Jerry Chou; Oliver Rübel; Prabhat; Homa Karimabadi; William S. Daughton; Vadim Roytershteyn; E. Wes Bethel; Mark Howison; Ke-Jou Hsu; Kuan-Wu Lin; Arie Shoshani; Andrew Uselton; Kesheng Wu

2012-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "io ir iq" 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

Model-driven Memory Optimizations for High Performance Computing: From Caches to I/o.  

E-Print Network (OSTI)

??High performance systems are quickly evolving to keep pace with application demands, and we observe greater complexity in system design at all scales. Parallelism, in… (more)

Frasca, Michael

2012-01-01T23:59:59.000Z

382

f 'E.-(~ 128A:IO 1/23/80 ss California Energy Commission  

E-Print Network (OSTI)

Krasovec, U.; Orel, B. Electrochim. Acta 2001, 46, 2077- 2084. (4) Granqvist, C. G. Handbook of Inorganic that have reported fundamental absorption edges in the range 460-550 nm for V2O5 thin films.19,20 Figure 2b the photon energy h, where ) 2, assuming that indium-vanadium mixed oxide thin films have a fundamental

383

Efficient data restructuring and aggregation for I/O acceleration in PIDX  

Science Conference Proceedings (OSTI)

Hierarchical, multiresolution data representations enable interactive analysis and visualization of large-scale simulations. One promising application of these techniques is to store high performance computing simulation output in a hierarchical Z (HZ) ...

Sidharth Kumar; Venkatram Vishwanath; Philip Carns; Joshua A. Levine; Robert Latham; Giorgio Scorzelli; Hemanth Kolla; Ray Grout; Robert Ross; Michael E. Papka; Jacqueline Chen; Valerio Pascucci

2012-11-01T23:59:59.000Z

384

Toward simulation-time data analysis and I/O acceleration on leadership-class systems  

E-Print Network (OSTI)

infrastructure on the systems at the Argonne Leadership Computing Facility (ALCF). We use the 40-rack Intrepid applications in the ALCF environment, we set up a temporary PVFS2 storage cluster on Eureka and mounted by a U.S. Department of Energy INCITE award and an ALCF Director's Discretionary Allocation. #12

385

Visual Analysis of I/O System Behavior for HighEnd Computing  

E-Print Network (OSTI)

Inglett, and Robert Wisniewski for their advice on the Blue Gene hardware. We thank Argonne ALCF's William, and Timothy Williams, for their advice on the ALCF early-access Blue Gene/Q machine. This work was supported] Argonne Leadership Computing Facility: The ANL Intrepid Blue Gene System. http://www.alcf

386

Bridging HPC and Grid File I/O with IOFSL Jason Cope1  

E-Print Network (OSTI)

IOFSL driver. We used the Argonne Leadership Computing Facility's Eureka Linux cluster. Eureka is a 100 of the Argonne Leadership Computing Facility at Argonne National Laboratory, which is supported by the Office with traditional HPC data-centers, such as the DOE leadership computing facilitates at Argonne National Laboratory

387

I/O efficient algorithms for serial and parallel suffix tree construction  

Science Conference Proceedings (OSTI)

Over the past three decades, the suffix tree has served as a fundamental data structure in string processing. However, its widespread applicability has been hindered due to the fact that suffix tree construction does not scale well with the size of the ... Keywords: Suffix tree, disk-based, external memory, genome indexing, parallel, sequence indexing

Amol Ghoting; Konstantin Makarychev

2010-11-01T23:59:59.000Z

388

Six degrees of scientific data: reading patterns for extreme scale science IO  

Science Conference Proceedings (OSTI)

Petascale science simulations generate 10s of TBs of application data per day, much of it devoted to their checkpoint/restart fault tolerance mechanisms. Previous work demonstrated the importance of carefully managing such output to prevent application ... Keywords: adios, analysis, hdf5, log-based, logically contiguous, netcdf, pnetcdf, visualization

Jay Lofstead; Milo Polte; Garth Gibson; Scott Klasky; Karsten Schwan; Ron Oldfield; Matthew Wolf; Qing Liu

2011-06-01T23:59:59.000Z

389

Mainstreaming international governance: The environment, gender, and IO performance in the European Union  

E-Print Network (OSTI)

energy, which had major impacts on the environment, but over which environmental policy-makers exerted little influence (Jordan

Pollack, Mark A.; Hafner-Burton, Emilie M.

2010-01-01T23:59:59.000Z

390

An Accurate Jitter Estimation Technique for Efficient High Speed I/O Testing  

Science Conference Proceedings (OSTI)

This paper describes a technique for estimating total jitter that, along with a loopback-based margining test, can be applied to test high speed serial interfaces. We first present the limitations of the existing estimation method, which is based on ...

Dongwoo Hong; Kwang-Ting (Tim) Cheng

2007-10-01T23:59:59.000Z

391

The sources of sodium escaping from Io revealed by spectral high definition imaging  

E-Print Network (OSTI)

, Mercury) observed in white light (that is, over a broad spectral band), a single `best image' can be found in a data set can be found and added together. HDI creates such a composite image by selecting and adding in white light, the finest image of its surface ever obtained from a ground-based telescope was obtained

392

Improving Collective I/O Performance by Pipelining Request Aggregation and File Access  

E-Print Network (OSTI)

University USA choudhar@eecs.northwestern.edu Karen Schuchardt PNNL USA Karen.Schuchardt@pnnl.gov ABSTRACT

393

EVO LU T IO N, C OM P E T I T IO N A N D C O O P E R AT IO N I N BAC T E R IA L P O P U L AT IO N S  

E-Print Network (OSTI)

, forestry or industrial wastes It includes a variety of a relatively cheap agricultural or forestry residues, dedicated crops and different kinds of waste, such as wheat straw, corn stover, wood chips, etc. Use of bio-cellulose, while the carbohydrate- rich micro-fibrils are surrounded by a lignin seal. Hemi- cellulose is connected

Paris-Sud XI, Université de

394

FlexIO: Location Flexible Execution of In Situ Analytics for Large Scale Scientific Applications  

E-Print Network (OSTI)

@cc.gatech.edu) Scott Klasky (klasky@ornl.gov) Web: https://research.cc.gatech.edu/sdmatcercs/ http://www.olcf

Epema, Dick H.J.

395

An Enhanced GINGER Simulation Code with Harmonic Emission and HDF5 IO Capabilities  

E-Print Network (OSTI)

S. Reiche. I also thank the LCLS project of?ce at SLAC for ?1 (2004); see also http://www- ssrl.slac.stanford.edu/lcls/lcls tech notes.html/LCLS-TN- 04-3.pdf . [2] National Center

Fawley, William M.

2006-01-01T23:59:59.000Z

396

Supporting high-performance I/O in QoS-enabled ORB middleware  

Science Conference Proceedings (OSTI)

To be an effective platform for high-performance distributed applications, off-the-shelf Object Request Broker (ORB) middleware, such as CORBA, must preserve communication-layer quality of service (QoS) properties both vertically (i.e., ...

Fred Kuhns; David Levine; Douglas C. Schmidt; Carlos O'Ryan

2000-07-01T23:59:59.000Z

397

The networked device driver architecture : a solution for remote I/O  

E-Print Network (OSTI)

of 1000 characters, it took 632 usec to travel from sink tosource under pipes, and 618 usec under shared memory.characters, it took 91988 usec to traverse the network

Taylor, Cynthia Bagier

2012-01-01T23:59:59.000Z

398

Enabling Event Tracing At Leadership-class Scale Through I/O Forwarding Middleware  

E-Print Network (OSTI)

://www.sciencedirect.com An exception to the rule: common vampire bats do not learn taste aversions JOHN M. RATCLIFFE*, M. BROCK FENTON) readily acquired taste aversions, the common vampire bat, Desmodus rotundus, a monophageous feeder rights reserved. To cope with nutritional demands, energy requirements and toxins, animals have evolved

399

A Visual Network Analysis Method for Large Scale Parallel I/O Systems  

E-Print Network (OSTI)

VAMPIRE ENERGY GAME SYSTEM: ON FOR 2 HOURS A DAY #12;4 How to get rid of your vampire plug loads You to eliminate all plug loads and the spooky vampire plug loads. Or, the simplest solution of course than was used by the machine in the factory that created it in the first place. Vampire energy Some

400

A Visual Network Analysis Method for Large Scale Parallel I/O Systems  

E-Print Network (OSTI)

the increased computational load. Since all of these transactions are stored in the VAMPIRE database, no dataVAMPIRE microarray suite: a web-based platform for the interpretation of gene expression data of analysis, collectively known as variance-modeled posterior inference with regional exponentials (VAMPIRE

Note: This page contains sample records for the topic "io ir iq" 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.


401

THERMINATOR 2: THERMal heavy IoN generATOR 2  

E-Print Network (OSTI)

We present an extended version of THERMINATOR, a Monte Carlo event generator dedicated to studies of the statistical production of particles in relativistic heavy-ion collisions. The increased functionality of the code contains the following features: The input of any shape of the freeze-out hypersurface and the expansion velocity field, including the 3+1 dimensional profiles, in particular those generated externally with various hydrodynamic codes. The hypersufraces may have variable thermal parameters, which allows for studies departing significantly from the mid-rapidity region, where the baryon chemical potential becomes large. We include a library of standard sets of hypersurfaces and velocity profiles describing the RHIC Au+Au data at sqrt(s_(NN)) = 200 GeV for various centralities, as well as those anticipated for the LHC Pb+Pb collisions at sqrt(s_(NN)) = 5.5 TeV. A separate code, FEMTO-THERMINATOR, is provided to carry out the analysis of femtoscopic correlations which are an important source of info...

Chojnacki, Mikolaj; Florkowski, Wojciech; Broniowski, Wojciech

2012-01-01T23:59:59.000Z

402

T-676: Apple iOS Certificate Chain Validation Flaw Lets Certain...  

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

HT4825 Apple Product Security CVE-2011-0228 IMPACT ASSESSMENT: Medium Discussion: A remote user in a privileged network position can exploit a certificate chain validation...

403

V-015: Apple iOS Bugs Let Remote Users Execute Arbitrary Code...  

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

ID: 56363 CVE-2012-3748 CVE-2012-3749 CVE-2012-3750 IMPACT ASSESSMENT: High DISCUSSION: A remote user can create specially crafted HTML that, when loaded by the target user, will...

404

Using IOR to analyze the I/O Performance for HPC Platforms  

E-Print Network (OSTI)

Scientific Computing Center (NERSC) 2 Future TechnologySupercomputing Center (NERSC). We describe how the workloadto emulate elements of the NERSC workload. We describe a

Shan, Hongzhang; Shalf, John

2007-01-01T23:59:59.000Z

405

Active Block I/O Scheduling System (ABISS) Giel de Nijs  

E-Print Network (OSTI)

a number of so-called media extenders or renderers throughout the house with recorded content. Putting the FAT, ext2 and ext3 #12;lesystems. ABISS works from similar premises as RTFS [1], but puts less

Almesberger, Werner

406

An Interposed 2-Level I/O Scheduling Framework for Performance Virtualization  

E-Print Network (OSTI)

, and naturally facilitates data sharing when needed, sharing of the underlying stor- age infrastructure that can be built on top of an existing storage utility. This framework uses a low-level feedback, but in the cost of personnel to man- age them. It is, thus, more attractive economically to out-source the storage

Sivasubramaniam, Anand

407

An Interposed 2-Level I/O Scheduling Framework for Performance Virtualization  

E-Print Network (OSTI)

infrastructure can lead to interference between the different applications/users and possi- ble violation utility is dedicated to them. Several approaches exist for performance virtualization. We cat- egorize on a fairly detailed performance model of the underlying stor- age system to estimate the service time

Riska, Alma

408

Microsoft Word - Johnston.IOS.Network Communication as a Service-Oriented Capability.5.doc  

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

Communication as a Service-Oriented Communication as a Service-Oriented Capability William JOHNSTON, Joe METZGER, Mike O'CONNOR, Michael COLLINS, Joseph BURRESCIA, Eli DART, Jim GAGLIARDI, Chin GUOK, and Kevin OBERMAN ESnet, Lawrence Berkeley National Laboratory Abstract. In widely distributed systems generally, and in science-oriented Grids in particular, software, CPU time, storage, etc., are treated as "services" - they can be allocated and used with service guarantees that allows them to be integrated into systems that perform complex tasks. Network communication is currently not a service - it is provided, in general, as a "best effort" capability with no guarantees and only statistical predictability. In order for Grids (and most types of systems with widely

409

Diffusion and submonolayer growth of para-sexiphenyl on Ir(111) and Ir(111)-supported graphene  

Science Conference Proceedings (OSTI)

Transparent, flexible, and conductive graphene sheets form an ideal substrate for the fabrication of organic light-emitting diodes. In order to obtain an optimal final device, it is vitally important to understand the underlying nucleation and growth ...

G. Hlawacek; F. S. Khokar; R. van Gastel; C. Teichert; B. Poelsema

2011-07-01T23:59:59.000Z

410

Polarized IR and Raman spectra of Ca{sub 2}MgSi{sub 2}O{sub 7}, Ca{sub 2}ZnSi{sub 2}O{sub 7} and Sr{sub 2}MgSi{sub 2}O{sub 7} single crystals: Temperature-dependent studies of commensurate to incommensurate and incommensurate to normal phase transitions  

Science Conference Proceedings (OSTI)

IR and Raman spectra of Ca{sub 2}MgSi{sub 2}O{sub 7}, Ca{sub 2}ZnSi{sub 2}O{sub 7} and Sr{sub 2}MgSi{sub 2}O{sub 7} oriented single crystals and powders have been measured. The temperature dependence of phonons has been established in the 4-650 K range. Discussion of the results has been performed on the basis of factor group approach for the tetragonal P4-bar 2{sub 1}m (D{sub 2d}{sup 3}) space group with Z=2. The assignment of the bands observed to the internal and external modes has been made on their polarization behaviour, phonon energy calculations and literature data. The evidences of the LO-TO splitting and commensurate (C) to incommensurate (IC) as well as incommensurate (IC) to normal (N) phase transitions have been found. As a representative example, the results obtained for the spontaneous Raman scattering have also been used in the discussion of the stimulated Raman spectra of Ca{sub 2}ZnSi{sub 2}O{sub 7}. - Graphical abstract: Raman and IR spectra of Ca{sub 2}MgSi{sub 2}O{sub 7}, Ca{sub 2}ZnSi{sub 2}O{sub 7}, Sr{sub 2}MgSi{sub 2}O{sub 7} have been measured. The temperature dependence of phonons has been established in the 4-650 K range. The evidences of the LO-TO splitting and commensurate (C) to incommensurate (IC) as well as incommensurate (IC) to normal (N) phase transitions have been found. Highlights: Black-Right-Pointing-Pointer Polarized IR and Raman spectra of pyrosilicates single crystals have been studied. Black-Right-Pointing-Pointer Temperature dependence of the phonon bands and LO-TO splitting have been analysed. Black-Right-Pointing-Pointer Commensurate to incommensurate and to normal phase have been evidenced in the spectra. Black-Right-Pointing-Pointer Phonon calculations have been used in assignment of the normal modes. Black-Right-Pointing-Pointer Stimulated Raman spectra of Ca{sub 2}ZnSi{sub 2}O{sub 7} crystal have been measured and analysed.

Hanuza, J. [Institute of Low Temperatures and Structure Research, Polish Academy of Sciences, ul. Okolna 2, Wroclaw (Poland); Department of Bioorganic Chemistry, Institute of Chemistry and Food Technology, Wroclaw University of Economics, 118/120 Komandorska str., Wroclaw (Poland); Ptak, M., E-mail: m.ptak@int.pan.wroc.pl [Institute of Low Temperatures and Structure Research, Polish Academy of Sciences, ul. Okolna 2, Wroclaw (Poland); Maczka, M.; Hermanowicz, K. [Institute of Low Temperatures and Structure Research, Polish Academy of Sciences, ul. Okolna 2, Wroclaw (Poland); Lorenc, J. [Department of Bioorganic Chemistry, Institute of Chemistry and Food Technology, Wroclaw University of Economics, 118/120 Komandorska str., Wroclaw (Poland); Kaminskii, A.A. [Institute of Crystallography, Russian Academy of Sciences, Moscow (Russian Federation)

2012-07-15T23:59:59.000Z

411

Microsoft Word - IR-03-02-11.doc  

Office of Legacy Management (LM)

Grand Junction, Colorado, Site Grand Junction, Colorado, Site March 2011 Page 1 2011 Annual Inspection Report for the Grand Junction, Colorado, Site Summary The Grand Junction, Colorado, Site, inspected on February 15, 2011, was in excellent condition. Physical and institutional controls enacted at the site continue to be effective in preventing exposure to contamination remaining on the property. No cause for a follow-up inspection was identified. 1.0 Introduction This report presents the results of the annual U.S. Department of Energy (DOE) inspection of the Grand Junction, Colorado, Site. R. Johnson (Inspector) of S.M. Stoller Corporation, the DOE Office of Legacy Management (LM) contractor at Grand Junction, Colorado, conducted the inspection on February 15, 2011. M. Cosby of the Colorado Department of Public Health and

412

Microsoft Word - IR-mnt Apr 2009.doc  

Office of Legacy Management (LM)

Site//Monticello Vicinity Properties Information Repository Subject Index, April 2009 Site//Monticello Vicinity Properties Information Repository Subject Index, April 2009 File Index: MNT 010.02 Page 1 of 45 Information Repository for the U.S. Department of Energy Monticello Mill Tailings Site/Monticello Vicinity Properties Monticello, Utah Subject Index Note: This Information Repository contains Monticello Mill Tailings Site (MMTS) Operable Units I, II and III and Monticello Vicinity Properties (MVP) documents generated after signatory acceptance of the MMTS OU I & II, MVP, and MMTS OU III Records of Decision. Documents leading up to the Record of Decision are located in the Monticello Mill Tailings Site/Monticello Vicinity Properties Administrative Record and in the MMTS OU III Administrative Record. In October 2004, OU III documents began to be integrated into the Information Repository collection of documents. Complete

413

IndustrialAffiliatesDay Far IR and Terahertz Photonics  

E-Print Network (OSTI)

..................................................................................... 5 Quantum Cascade Lasers: widely tailorable light source from the mid-infrared to Tera and light canbeused troopticalpr Ss. The resu tiesofthese thecontexto ArmyResea s: (1) THzF cedSolidSta THz stentsurveill andsomefut tricalengine ceastheSup usly,hewas ctronicSens visionatthe pticsSystems ptical

Van Stryland, Eric

414

Alternative IR geometries for TESLA with a small crossing angle  

E-Print Network (OSTI)

The formulation of hybrid crossing angle schemes has been a recent development of the TESLA collision geometry debate. Here we report on two such schemes, characterised by either a small vertical or horizontal beam crossing angle.

R. Appleby; D. Angal-Kalinin; P. Bambade; B. Mouton; O. Napoly; J. Payet; the TESLA Collaboration

2004-12-09T23:59:59.000Z

415

Wet Chemical Compositional and Near IR Spectra Data Sets ...  

Technology Marketing Summary NREL has developed the following laboratory analytical procedures (LAPs) for standard biomass analysis. The American ...

416

SPORT FISHERY PROJECTS, 1956 -aoij M ir\\e.S  

E-Print Network (OSTI)

Gerding Takanori Ito Karen & Thomas Jeppson Habil & Nafisa Khorakiwala Nancy Kildsig Jack & Cynthia Klee

417

Test theory for evaluating reliability of IR test collections  

Science Conference Proceedings (OSTI)

Classical test theory offers theoretically derived reliability measures such as Cronbach's alpha, which can be applied to measure the reliability of a set of Information Retrieval test results. The theory also supports item analysis, which identifies ... Keywords: Evaluation, Generalizabilty theory, Test collections, Test theory

David Bodoff

2008-05-01T23:59:59.000Z

418

MEASURING LOCAL GRADIENT AND SKEW QUADRUPOLE ERRORS IN RHIC IRS.  

SciTech Connect

The measurement of local linear errors at RHIC interaction regions using an ''action and phase'' analysis of difference orbits has already been presented. This paper evaluates the accuracy of this technique using difference orbits that were taken when known gradient errors and skew quadrupole errors were intentionally introduced. It also presents action and phase analysis of simulated orbits when controlled errors are intentionally placed in a RHIC simulation model.

CARDONA,J.; PEGGS,S.; PILAT,R.; PTITSYN,V.

2004-07-05T23:59:59.000Z

419

FT-IR Microspectroscopy and Multivariate Statistics on Plant ...  

Science Conference Proceedings (OSTI)

... The model system chosen for this study was the uni-cellular algae, chlorella.pyrenoidosa, which was found to be sensitive to many of the same ...

420

Overview of the TREC 2009 Chemical IR Track  

Science Conference Proceedings (OSTI)

... Statistical power in retrieval exper- imentation. ... 10 catalysts for simultane- ous hydrotreating and hydrodewaxing of hydro- carbons ...

2010-02-24T23:59:59.000Z

Note: This page contains sample records for the topic "io ir iq" 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

Solar Energy Windows and Smart IR Switchable Building Technologies  

SciTech Connect

The three building envelope functions with the largest impact on the energy usage are illumination, energy flux and energy production. In general, these three functions are addressed separately in the building design. A step change toward a zero-energy building can be achieved with a glazing system that combines these three functions and their control into a single unit. In particular, significant value could be realized if illumination into the building is dynamically controlled such that it occurs during periods of low load on the grid (e.g., morning) to augment illumination supplied by interior lights and then to have that same light diverted to PV energy production and the thermal energy rejected during periods of high load on the grid. The objective of this project is to investigate the feasibility of a glazing unit design that integrates these three key functions (illumination and energy flux control, and power production) into a single module.

McCarny, James; Kornish, Brian

2011-09-30T23:59:59.000Z

422

Application of QCLs to ns IR Spectroscopy Following Pulse Radiolysis  

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

External-Cavity Quantum Cascade Infrared Lasers to Nanosecond Time-Resolved Infrared Spectroscopy of Condensed-Phase Samples Following Pulse Radiolysis David C. Grills, Andrew R....

423

COMPETING REACTION CHANNELS IN IR LASER INDUCED UNIMOLECULAR REACTIONS  

E-Print Network (OSTI)

the signal is due to thermal cooling. (Sjiun qjD) ^ijsueiuiendotheraic process giving thermal cooling (T* - 200 K ) andis followed by a slower, thermal cooling. oscillations are

Berman, M.R.

2010-01-01T23:59:59.000Z

424

Optical modeling of the Jefferson Laboratory IR Demo FEL  

Science Conference Proceedings (OSTI)

The Thomas Jefferson National Accelerator Facility (Jefferson Lab) is in the process of building a 1 kW free-electron laser operates at 3 microns. The details of the accelerator driver are given in other papers in these proceedings. The optical cavity consists of a near-concentric resonator with transmissive outcoupling. Though several free-electron lasers have used similar designs, they have not had to confront the high average-power loading present in this laser. It is useful to know the limits of this type of optical cavity design. The optical system of the laser has been modeled using the commercial code GLAD{reg_sign} by using a Beer`s-law region to mimic the FEL interaction. The effects of mirror heating have been calculated and compared with analytical treatments. The magnitude of the distortion for several materials and wave-lengths has been estimated. The model developed here allows one to quickly determine whether the mirror substrates and coatings are adequate for operation at a given optical power level once the absorption of the coatings, substrate, and transmission are known. Results of calculations of the maximum power level expected using several different sets of mirrors will be presented. Measurements of the distortion in calcium fluoride from absorption of carbon dioxide laser light are planned to benchmark the simulations. Multimode simulations using the code ELIXER have been carried out to characterize the saturated optical mode quality. The results will be presented.

Benson, S.V.; Davidson, P.S.; Jain, R.; Kloeppel, P.K.; Neil, G.R.; Shinn, M.D.

1997-11-01T23:59:59.000Z

425

Inclusive B-decay spectra and IR renormalons.  

E-Print Network (OSTI)

immediate price is Landau singularities). The perturbative coefficients get significant contributions from small momentum scales, contributions that increase with fWe systematically neglect O(1/N), or, equivalently, O(?/M) effects. Eq. (14) does not hold... for small N . 10 increasing logarithmic accuracy [22]. DGE addressed the source of this problem. Using Borel summation — with a principal-value (PV) prescrip- tion for example — it systematically separates non-perturbative power-like terms in the Sudakov...

Gardi, Einan

426

Probiotik? YEASTURE ir MICROBOND ?taka avi? prieauglio produktyvumui.  

E-Print Network (OSTI)

??Two groups of 5 and two groups of 9 Romanov breed hogs in each were performed at Pranas Gaidamavi?ius breeding herd at 90 days of… (more)

Olberkien?,; Gintar?

2005-01-01T23:59:59.000Z

427

Optical modeling of the Jefferson Lab IR Demo FEL  

Science Conference Proceedings (OSTI)

The Thomas Jefferson National Accelerator Facility (formerly known as CEBAF) has embarked on the construction of a 1 kW free-electron laser operating initially at 3 microns that is designed for laser-material interaction experiments and to explore the feasibility of scaling the system in power and wavelength for industrial and Navy defense applications. The superconducting radio-frequency linac, and single-pass transport which accelerates the beam from injector to wiggler, followed by energy-recovery deceleration to a dump. The electron and optical beam time structure in the design consists of a train of pecosecond pulses at a 37.425 MHz pulse repetition rate. The initial optical configuration is a conventional near-concentric resonator with transmissive outcoupling. Future upgrades of the system will increase the power and shorten the operating wavelength, and utilize a more advanced resonator system capable of scaling to high powers. The optical system of the laser has been mode led using the GLAD code by using a Beer's-law region to mimic the FEL interaction. Effects such as mirror heating have been calculated and compared with analytical treatments. The magnitude of the distorium for several materials and wavelengths has been estimated. The advantages as well as the limitations of this approach are discussed.

G. Neil; S. Benson; Michelle D. Shinn; P. Davidson; P. Kloppel

1997-01-01T23:59:59.000Z

428

IR System Evaluation Why do we perform evaluation?  

E-Print Network (OSTI)

Fallout = b / (b+d) = F Generality = (a+c) / (a+ b + c +d) = G GR/[GR+(1-G)F] = [(a+c)/(a+ b + c +d precision after having retrieved v ranks Fv fallout after having retrieved v ranks Commonly used measure .167 R .5 .75 1 Rnorm Interpretation: How much better is the system compared to worst case (Fallout

Raghavan, Vijay

429

Physically Retrieving Cloud and Thermodynamic Parameters from Ultraspectral IR Measurements  

Science Conference Proceedings (OSTI)

A physical inversion scheme has been developed dealing with cloudy as well as cloud-free radiance observed with ultraspectral infrared sounders to simultaneously retrieve surface, atmospheric thermodynamic, and cloud microphysical parameters. A ...

Daniel K. Zhou; William L. Smith Sr.; Xu Liu; Allen M. Larar; Stephen A. Mango; Hung-Lung Huang

2007-03-01T23:59:59.000Z

430

Measurement of Visible and Near-IR Optical Properties of ...  

Science Conference Proceedings (OSTI)

... to the estimated total expanded uncertainty (95 ... ex- tinction measurements of polystyrene and Plexiglas ... than estimations based on graphite re- sults ...

2005-06-21T23:59:59.000Z

431

Cationic Ir(III) alkyl and hydride complexes: stoichiometric ...  

80 S.R. Klei et al./Journal of Molecular Catalysis A: Chemical 189 (2002) 79–94 platinum(II) catalyst capable of converting methane to methyl bisulfate, which could ...

432

Ir. Charles Mussche 8 Spruce St, New York  

E-Print Network (OSTI)

and Electricity Assessments, Biogas Plant Feasibility Assessments and Investment Payback, PV for the construction of a biogas plant resulting in a 74% reduction in electricity needs

433

Overview of the TREC 2011 Chemical IR Track  

Science Conference Proceedings (OSTI)

... TS-37 DNA-based asym- metric catalysis The users are looking for information about DNA-based asym- metric catalysis, especially sample ...

2012-02-03T23:59:59.000Z

434

FROM THE P PR RE ES SO OL LI IC CI IT TA AT TI IO ON N C CO  

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

by the team of technical and management approach? Answer: The Source Evaluation Board will conduct an oral presentation session with the offeror's Key Personnel who shall...

435

Gewhimica et Cowmchimica Act& Vol. 59. No. IO, pp. I907-1915, 1995 Copyright 0 1995 Elsevier Science Ltd  

E-Print Network (OSTI)

in the harite-celestite series. Anwr. Mirrrrtrl. 53, I21 5- 1222. Hawthorne F. C. and Ferguson R. B. ( 1975

Dove, Patricia M.

436

You have been friended by the U.S. military using social networking services for IO messaging .  

E-Print Network (OSTI)

??Social Networking Services (SNS) have achieved a salience in today's society. Facebook has over 500 million active users worldwide. SNS has been used by companies… (more)

Rouse, Harold D.

2010-01-01T23:59:59.000Z

437

Supporting Computational Data Model Representation with High-performance I/O in Parallel netCDF  

E-Print Network (OSTI)

staycompetitive Argonne Leadership Computing Facility industry@alcf.anl.gov #12;MIRA RANKS third on the TOP500, and create more accurate models for your business with Mira, the ALCF's new petascale IBM Blue Gene/Q system, ALCF Science Director CUTTING-EDGE SUPERCOMPUTING KEEPS YOU COMPETITIVE A key driver of our nation

Choudhary, Alok

438

ISSN 1869-2311 daS magazIN fr forSchuNg, Lehre, INNovatIoN  

E-Print Network (OSTI)

, Produktionswirtschaft, Informationswirtschaft, UnternehmensfĂĽhrung und Organisation, Investition und Finanzierung sowie Organisation, der Investition und Finanzierung sowie des Controllings zu vermitteln. Die Entscheidungsfindung - Institutionen- und agencytheoretische GrundĂĽberlegungen 2) Investition und Finanzierung: Das Teilgebiet

439

notienefronteras Impacto del cambIo clImtIco en la comunIdad andIna  

E-Print Network (OSTI)

ejemplo, en los crecientes asentamientos informales en Colombia, Venezuela y Perú, entre otros países. 2 país. Venezuela y Panamá también fueron afectados. Fuente: Münchener Rückversicherungs

440

Jefferson Lab Science Series - Adventures in Science  

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

Physics IQ Test Previous Video (Physics IQ Test) Science Series Video Archive Next Video (Polymers, Foams and Gels) Polymers, Foams and Gels Adventures in Science Professor Cynthia...

Note: This page contains sample records for the topic "io ir iq" from the National Library of EnergyBeta (NLEBeta).
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441

Jefferson Lab Science Series - Symmetry - From Kaleidoscopes...  

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

Detecting Einstein's Gravity Waves Previous Video (Detecting Einstein's Gravity Waves) Science Series Video Archive Next Video (Physics IQ Test) Physics IQ Test Symmetry - From...

442

Becoming Familiar with SI  

Science Conference Proceedings (OSTI)

... Discover the scale of things - check out super small natural and man made items from the nano world! ... NIST Nano IQ Quiz - What's your Nano IQ? ...

2013-05-22T23:59:59.000Z

443

Copyright 2006, Society of Petroleum Engineers This paper was prepared for presentation at the 2006 SPE Intelligent Energy Conference and  

E-Print Network (OSTI)

aerospace to automotive to household appliances) has been able to increase its products IQ (Intelligence

Mohaghegh, Shahab

444

Plasma Physics and Controlled Fuiian. Vol. 34. No.6.pp. I I33 io 1156, 1y92 Printed in Crcat Britain.  

E-Print Network (OSTI)

the incident wave u0 = cxp ($,) satisfies equation (2.1) and the solulion for the perturbed Rytov phast: can

Howard, John

445

Published in `AI Communications 9 journal', pp1-17. Published by IOS Press (1996) TIGERTM: Knowledge Based Gas Turbine Condition Monitoring  

E-Print Network (OSTI)

: Knowledge Based Gas Turbine Condition Monitoring Dr. Robert Milne and Dr. Charlie Nicol Intelligent, 11 Colon, Barcelona, 08222 Terrassa. Spain 1. INTRODUCTION Given the critical nature of gas turbines and increasing the availability of the gas turbine. Routine preventative maintenance techniques have been used

Travé-Massuyès, Louise

446

IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS, VOL. 22, NO. 7, JULY 2003 847 Energy-Conscious, Deterministic I/O Device  

E-Print Network (OSTI)

amount of time and power to transition between its power states. In real-time systems where tasks have parameters: · two power states--a low-power sleep state and a high-power working state ; · a transition time directly to the working state. Although the transition times from the powered-up state to the sleep states

Chakrabarty, Krishnendu

447

Tuning high-performance scientific codes: the use of performance models to control resource usage during data migration and I/O  

Science Conference Proceedings (OSTI)

Large-scale parallel simulations are a popular tool for investigating phenomena ranging from nuclear explosions to protein folding. These codes produce copious output that must be moved to the workstation where it will be visualized. Scientists have ...

Jonghyun Lee; Marianne Winslett; Xiaosong Ma; Shengke Yu

2001-06-01T23:59:59.000Z

448

This paper discusses the effects of the sensor-data resolution on the I/O characteristics of a digital fuzzy  

E-Print Network (OSTI)

, Ottawa, ON, Canada #12;train operation control, nuclear reactor control, automobile transmission control of the FL theory, [2]. Fuzzy logic control provides a very convenient non- analytic solution to many

Petriu, Emil M.

449

I/O Threads to Reduce Checkpoint Blocking for an Electromagnetics Solver on Blue Gene/P and Cray XK6  

E-Print Network (OSTI)

Facility (OLCF), managed for DOE; the National Institute for Computational Sciences (NICS) computing Leadership Computing Facility (OLCF) and · enhancing knowledge of computational modeling and simulation next door to the OLCF. The OLCF, which is located on the ORNL campus, is among the nation's most modern

450

Analytical input-output and supply chain study of China's coke and steel sectors; Analytical I/O and supply chain study of China's coke and steel sectors.  

E-Print Network (OSTI)

??I design an input-output model to investigate the energy supply chain of coal-coke-steel in China. To study the demand, supply, and energy-intensity issues for coal… (more)

Li, Yu, 1976-

2004-01-01T23:59:59.000Z

451

Analysis of the Deepwater Horizon Accident in Relation to Arctic Waters Prof. ir. C.A. Willemse MBA, Dr. ir. P.H.A.J.M. van Gelder  

E-Print Network (OSTI)

the well in a controlled underbalanced condition. In retrospect, pressure readings and volume bled were

van Gelder, Pieter

452

Darshan Performance Analysis Tool at NERSC  

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

Darshan darshan Darshan has been turned on by default on Hopper and Edison Description Darshan is a light weight IO profiling tool capable of profiling POSIX IO, MPIIO and HDF5 IO....

453

Darshan » Data  

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

Data June 18th, 2013 The ALCF IO Data Repository The ALCF IO Data Repository is a collection of anonymized log files that summarize the IO characteristics of production...

454

Placement Effectiveness of a Drill-Assisted Versus Manual Intraosseous Catheter by Resident Physicians in a Swine Model  

E-Print Network (OSTI)

of a Drill-Assisted Versus Manual Intraosseous Catheter byIO needle and 76.2% with the manual IO needle (p=0.04).common complication of the manual IO insertion was a bent

Hafner, John William; Bryant, Adam; Huang, Felix; Swisher, Keir

2013-01-01T23:59:59.000Z

455

Data & File Systems  

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

Data Management Policies NERSC File Systems HPSS Data Archive Optimizing IO performance on the Lustre file system IO Formats Sharing Data Transferring Data Unix Groups at NERSC...

456

Rob Ross | Argonne National Laboratory  

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

Exascale Storage Architectures DAMSEL: Data Model Storage Library for Exasxale Science DIY: Do-it-Yourself Analysis Darshan: HPC IO Characterization Tool IOFSL: IO Forwarding...

457

NERSC HPSS Storage Statistics  

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

Storage Trends and Summaries Storage by Scientific Discipline Troubleshooting Optimizing IO performance on the Lustre file system IO Formats Sharing Data Transferring Data Unix...

458

Phil Carns | Argonne National Laboratory  

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

Website www.wastedcycles.orgpcarns Projects CODES: Enabling Co-Design of Multilayer Exascale Storage Architectures Darshan: HPC IO Characterization Tool IOFSL: IO Forwarding...

459

NERSC HPSS Storage by Scientific Discipline  

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

Storage by Scientific Discipline Troubleshooting Optimizing IO performance on the Lustre file system IO Formats Science Databases Sharing Data Transferring Data Unix Groups at...

460

Microsoft Word - Cover letter to RRTT-IR-001 Comments.doc  

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

should also accommodate the planning activities of rail expansion, natural gas transmission planning and electric transmission siting. As one looks at where major electric...

Note: This page contains sample records for the topic "io ir iq" 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

Cyclohexene Photo-oxidation over Vanadia Catalyst Analyzed by Time Resolved ATR-FT-IR Spectroscopy  

E-Print Network (OSTI)

oxidation over Vanadia Catalyst Analyzed by Time Resolvedperformance of vanadia catalysts [5] even though hydrationabsorption spectrum of these catalysts into the visible [

Mul, Guido

2008-01-01T23:59:59.000Z

462

Gravity Waves and GOES IR Data Study of an Isolated Tornadic Storm on 29 May 1977  

Science Conference Proceedings (OSTI)

Enhanced convection-initiated gravity waves associated with an isolated tornado in the absence of a squall line are investigated. Ray-tracing computations based on data observed on 29 May 1977 indicated that the wave sources were located in north-...

R. J. Hung; T. Phan; D. C. Lin; R. E. Smith; R. R. Jayroe; S. West

1980-04-01T23:59:59.000Z

463

Precision Determination of Atmospheric Extinction at Optical and Near IR Wavelengths  

SciTech Connect

The science goals for future ground-based all-sky surveys, such as the Dark Energy Survey, PanSTARRS, and the Large Synoptic Survey Telescope, require calibration of broadband photometry that is stable in time and uniform over the sky to precisions of a per cent or better, and absolute calibration of color measurements that are similarly accurate. This performance will need to be achieved with measurements made from multiple images taken over the course of many years, and these surveys will observe in less than ideal conditions. This paper describes a technique to implement a new strategy to directly measure variations of atmospheric transmittance at optical wavelengths and application of these measurements to calibration of ground-based observations. This strategy makes use of measurements of the spectra of a small catalog of bright 'probe' stars as they progress across the sky and back-light the atmosphere. The signatures of optical absorption by different atmospheric constituents are recognized in these spectra by their characteristic dependences on wavelength and airmass. State-of-the-art models of atmospheric radiation transport and modern codes are used to accurately compute atmospheric extinction over a wide range of observing conditions. We present results of an observing campaign that demonstrate that correction for extinction due to molecular constituents and aerosols can be done with precisions of a few millimagnitudes with this technique.

Burke, David L.; /SLAC; Axelrod, T.; /Arizona U., Astron. Dept. - Steward Observ.; Blondin, Stephane; /European Southern Observ. /Marseille, CPPM; Claver, Chuck; /NOAO, Tucson; Ivezic, Zeljko; Jones, Lynne; /Washington U., Seattle, Astron. Dept.; Saha, Abhijit; /NOAO, Tucson; Smith, Allyn; /Austin Peay State U.; Smith, R.Chris; /Cerro-Tololo InterAmerican Obs.; Stubbs, Christopher W.; /Harvard-Smithsonian Ctr. Astrophys.

2011-08-24T23:59:59.000Z

464

Fabrication of 3-D cubic unit cells with measured IR resonances.  

Science Conference Proceedings (OSTI)

3-D cubic unit cell arrays containing split ring resonators were fabricated and characterized. The unit cells are {approx}3 orders-of-magnitude smaller than microwave SRR-based metamaterials and exhibit both electrically and magnetically excited resonances for normally incident TEM waves in addition to showing improved isotropic response.

Ellis, A. Robert; Sinclair, Michael B.; Brener, Igal; Wendt, Joel Robert; Burckel, David Bruce; Ginn, James Cleveland, III; Ten Eyck, Gregory A.

2010-03-01T23:59:59.000Z

465

IR-584-11-83-1 RADIOLOGICAL STUDY OF MAYWOOD CHEMICAL, MAYWOOD...  

Office of Legacy Management (LM)

be suggested if the value is between 0.01 and 0.05. No measurements indicating a need for corrective action were observed in any of the buildings studied. 5-2 * 6.0 CONCLUSIONS...

466

Intern report ; IR 2008-01 Site speci c hazard estimates  

E-Print Network (OSTI)

of gas and/or oil exploration sites that may be capable of induced seismicity according to Van Eijs et al (2006). We will follow a conservative approach in which we assume that nearby oil and/or gas fields may;Site specific hazard: Europoort area 1 KNMI 1. Introduction A new Liquid Natural Gas energy plant

Stoffelen, Ad

467

2D IR spectroscopy and computational modeling : application to protein folding and binding  

E-Print Network (OSTI)

In this thesis, dynamics experiments are developed that can be used to study protein conformational changes such as folding and binding. Every functional motion of a protein is inextricably linked to conformational dynamics. ...

Ganim, Ziad

2010-01-01T23:59:59.000Z

468

A Feature-Based Approach to Satellite Precipitation Monitoring Using Geostationary IR Imagery  

Science Conference Proceedings (OSTI)

This paper describes a new geostationary infrared satellite precipitation monitoring methodology that draws on techniques from machine vision to develop a mathematical representation of cloud shapes and textures and the form of their embedding ...

T. J. Bellerby

2004-10-01T23:59:59.000Z

469

DESIGN AND CONSTRUCTION OF A 15 T, 120 MM BORE IR QUADRUPOLE MAGNET FOR LARP  

E-Print Network (OSTI)

the Director, Office o f Science, Office o f Fusion EnergyThis work was supported by the Director, Office of Science,Office of Basic Energy Sciences, of the U. S. Department of

Caspi, S.

2011-01-01T23:59:59.000Z

470

Ir Zuns Bar-Mitsve/ Her Son’s Bar-Mitzvah  

E-Print Network (OSTI)

Ö'Ö oisyys o^na pnx yrx .o^oio •p^a pmownyi x oy ? oo ny oyly^mav» iyp ly px tt>i&8 ^wn in oio oy 0811 >vw yp wrr .01 8

Samson Apter, Shimshen Apter/

1980-01-01T23:59:59.000Z

471

On the Age and Metallicity Estimation of Spiral Galaxies Using Optical and Near-IR Photometry  

E-Print Network (OSTI)

In integrated-light, some color - color diagrams that use optical and near-infrared photometry show surprisingly orthogonal grids as age and metallicity are varied, and they are coming into common usage for estimating the average age and metallicity of spiral galaxies. In this paper we reconstruct these composite grids using simple stellar population models from several groups convolved with exponentially decaying star formation histories. We find that the youngest populations present (t light, and because of their presence the age-metallicity degeneracy can be partially broken with broad-band colors, unlike older populations. There are several major problems, however. First, since the young populations dominate, it is the (nearly) present-day abundance that is being measured, not the mass-weighted abundance, despite the fact that the grids are usually labeled by mass-weighted ages. Second, there is large scatter among the various models, with substantial zero point and slope offsets ...

Lee, H; Trager, S C; Faber, S M; Lee, Hyun-chul; Worthey, Guy; Trager, Scott C.; Faber, Sandra M.

2006-01-01T23:59:59.000Z

472

Selective IR reflective coatings development. Semiannual report, July 24, 1978-January 24, 1979  

DOE Green Energy (OSTI)

Two low temperature deposition technques, a glow discharge activation technique and an ion plating technique, were investigated as methods for coating thin plastic membranes with solar transparent, infrared reflective semiconducting oxides. The glow discharge activation technique was shown to produce coatings with better optical properties than the ion plating technique. Repeatability of coating properties with the glow discharge technique has been a problem whose solution appears to lie in better deposition process control.

Lefkow, A R

1979-01-01T23:59:59.000Z

473

OpenIR [Open Infrared] : enhancing environmental monitoring through accessible remote sensing, in Indonesia and beyond  

E-Print Network (OSTI)

As the human landscape changes ever more rapidly, environmental change accelerates. Much environmental information is publicly available as infrared satellite data. However, for the general user, this information is difficult ...

Ducao, Arlene (Arlene Brigoli)

2013-01-01T23:59:59.000Z

474

Investigation of the factors determining the modulation characteristics of gas-discharge IR sources  

Science Conference Proceedings (OSTI)

The effect of design parameters and voltage of pulsed cesium sources with sapphire envelopes on their modulation characteristics are considered for the following combinations of operating parameters: the average repetition rate of current pulses up to f{sub i} = 1.0 kHz and the consumed electric power up to P{sub l} = 3 kW for the spectral range 3-5 {mu}m; f{sub i} = 1.0-8.0 kHz and P{sub l} up to 1.0 kW for the spectral range 0.8-2.7 {mu}m. Recommendations on further improvement of the modulation characteristics of lamps are given.

Gavrish, S. V.; Zhmaev, V. S.; Kobzar, A. I.; Loginov, V. V. [ZENITH Special Design Bureau, STELLA Factory (Russian Federation)

2010-12-15T23:59:59.000Z

475

UV-VIS-IR Spectral Responsivity Measurement System for Solar Cells  

DOE Green Energy (OSTI)

NREL's PV Cell and Module Performance Characterization group has built a new spectral responsivity measurement system for solar cells. It uses a xenon arc lamp source, a single, grating monochrometer, and a fiber-optic bundle to couple the monochromatic light to the test device. The system has a spectral bandwidth of 2 nm, minimum spot diameter of 1.6 mm, a spectral range of 280-1330 nm, and uncertainty better than {+-}3% over most of this range. It is capable of incorporating light bias with intensities exceeding one sun. This paper discusses the system's features, capabilities, calibration, and measurement uncertainties.

Field, H.

1998-11-12T23:59:59.000Z

476

Commissioning of a beta* knob for dynamic IR correction at RHIC  

Science Conference Proceedings (OSTI)

In addition to the recent optics correction technique demonstrated at CERN and applied at RHIC, it is important to have a separate tool to control the value of the beta functions at the collision point ({beta}*). This becomes even more relevant when trying to reach high level of integrated luminosity while dealing with emittance blow-up over the length of a store, or taking advantage of compensation processes like stochastic cooling. Algorithms have been developed to allow modifying independently the beta function in each plane for each beam without significant increase in beam losses. The following reviews the principle of such algorithms and their experimental implementation as a dynamic {beta}-squeeze procedure.

Robert-Demolaize G.; Marusic, A.; Tepikian, S.; White, S.

2012-05-20T23:59:59.000Z

477

Catalysis Letters Vol. 77, No. 13, 2001 1 Ammonia decomposition on Ir(100)  

E-Print Network (OSTI)

hydrogen pro- duction technologies such as steam reforming, partial oxida- tion and autothermal reforming reforming of methane/hydrocarbons as a method for production of CO-free hydrogen [3,4]. An alternative for hydrogen production for applications in fuel cells [3­6]. Recently we have pro- posed stepwise steam

Goodman, Wayne

478

Study of Electrode Surface by IR Spectroscopy X. Zhang and P. N. Ross  

E-Print Network (OSTI)

, and are inefficient at high rates of dis- charge. Lithium Ion: This is the fastest growing battery technol- ogy today, with significantly higher energy densities, and cycle life about twice that of Ni-MH batteries. Lithium ion batteries of a lithium/thionyl chloride cell. The battery consists of an anode (lithium), a cathode (carbon

479

Nearest-IR superluminescent diodes with a 100-nm spectral width  

Science Conference Proceedings (OSTI)

This paper presents an experimental study of quantum well superluminescent diodes with an extremely thin (InGa)As active layer. Under cw injection, the output power of such diodes is several milliwatts, with a centre wavelength of 830 nm and emission bandwidth of about 100 nm. (letters)

Il'chenko, S N; Ladugin, M A; Marmalyuk, Aleksandr A; Yakubovich, S D

2012-11-30T23:59:59.000Z

480

CRL's TREC-8 SystemsCross-Lingual IR, and Q&A Bill Ogden ...  

Science Conference Proceedings (OSTI)

... 5500 BByyttee RReessppoonnsseess3333 -- nnoo aannsswweerr 9977 -- nnoo ccoorrrreecctt aannsswweerr7700 -- ccoorrrreecctt aannsswweerr ...

2000-10-16T23:59:59.000Z

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481

MOLECULAR BEAM STUDIES OF IR LASER INDUCED MULTIPHOTON DISSOCIATION AND VIBRATIONAL PREDISSOCIATION  

E-Print Network (OSTI)

However, the dissociation rate increases rapidly with thehow the dissociation rate increases with the excess energy (9 the dissociation rate increases faster with excess energy,

Lee, Yuan T.

2013-01-01T23:59:59.000Z

482

Ultrafast 2D IR anisotropy of water reveals reorientation during hydrogen-bond switching  

E-Print Network (OSTI)

Rearrangements of the hydrogen bond network of liquid water are believed to involve rapid and concerted hydrogen bond switching events, during which a hydrogen bond donor molecule undergoes large angle molecular reorientation ...

Ramasesha, Krupa

483

Processing, Compression and Transmission of Satellite IR Data for Near-Real-Time Use at Sea  

Science Conference Proceedings (OSTI)

A method for acquisition, processing and analysis of digital, satellite-derived SST fields on a research vessel at sea in near-real-time (within 10 h of the satellite pass) is discussed. Such imagery provides a general view of the SST field over ...

Peter Cornillon; David Evans; Otis B. Brown; Robert Evans; Paul Eden; James Brown

1988-04-01T23:59:59.000Z

484

Use of Enhanced IR/Visible Satellite Imagery to Determine Heavy Snow Areas  

Science Conference Proceedings (OSTI)

Interpretation techniques are established which relate heavy snow (100 mm or more in a 12 h period) areas to real-time infrared and visible geostationary satellite imagery. An initial collection of cases totaled about 75 during the period from ...

Samuel K. Beckman

1987-09-01T23:59:59.000Z

485

IrCube tracker: an optical 6-DOF tracker based on LED directivity  

Science Conference Proceedings (OSTI)

Six-degrees-of-freedom (6-DOF) trackers, which were mainly for professional computer applications, are now in demand by everyday consumer applications. With the requirements of consumer electronics in mind, we designed an optical 6-DOF tracker where ... Keywords: LED directivity, ircube, optical 6-DOF tracker, source localization

Seongkook Heo; Jaehyun Han; Sangwon Choi; Seunghwan Lee; Geehyuk Lee; Hyong-Euk Lee; SangHyun Kim; Won-Chul Bang; DoKyoon Kim; ChangYeong Kim

2011-10-01T23:59:59.000Z

486

Estimation of Regional Surface Resistance to Evapotranspiration from NDVI and Thermal-IR AVHRR Data  

Science Conference Proceedings (OSTI)

Infrared surface temperatures from satellite sensors have been used to infer evaporation and soil moisture distribution over large areas. However, surface energy partitioning to latent versus sensible heat changes with surface vegetation cover ...

Ramakrishna R. Nemani; Steven W. Running

1989-04-01T23:59:59.000Z

487

Naam: dhr. prof. dr. ir. J.S. Sinninghe Damste Leeropdracht Moleculaire paleontologie  

E-Print Network (OSTI)

by coupling the hard rock geochemistry and geology of kim- berlites and other rocks into the petroleum program on reservoir geochemistry, basin modelling, petroleum migration and shale gas. The main focus in a range of fluid types, temperatures and pressures, including in the weathering of source rocks

Utrecht, Universiteit

488

Combined IR–Microwave Satellite Retrieval of Temperature and Dewpoint Profiles Using Artificial Neural Networks  

Science Conference Proceedings (OSTI)

Radiance measurements from satellites offer the opportunity to retrieve atmospheric variables at much higher spatial resolution than is presently afforded by in situ measurements (e.g., radiosondes). However, the accuracy of these retrievals is ...

Robert J. Kuligowski; Ana P. Barros

2001-11-01T23:59:59.000Z

489

The applicability of Fourier transform infrared (FT-IR) spectroscopy in waste management  

SciTech Connect

State and stability or reactivity of waste materials are important properties that must be determined to obtain information about the future behavior and the emission potential of the materials. Different chemical and biological parameters are used to describe the stage of organic matter in waste materials. Fourier transform infrared spectroscopy provides information about the chemistry of waste materials in a general way. Several indicator bands that are referred to functional groups represent components or metabolic products. Their presence and intensity or their absence shed light on the phase of degradation or stabilization. The rapid assessment of the stage of organic matter decomposition is a very important field of application. Therefore, infrared spectroscopy is an appropriate tool for process and quality control, for the assessment of abandoned landfills and for checking of the successful landfill remediation. A wide range of applications are presented in this study for different waste materials. Progressing stages of a typical yard/kitchen waste composting process are shown. The fate of anaerobically 'stabilized' leftovers in a subsequent liquid aerobic process is revealed by spectroscopic characteristics. A compost that underwent the biological stabilization process is distinguished from a 'substrate' that comprises immature biogenic waste mixed with mineral compounds. Infrared spectra of freeze-dried leachate from untreated and aerated landfill material prove the effect of the aerobic treatment during 10 weeks in laboratory-scale experiments.

Smidt, Ena [BOKU - University of Natural Resources and Applied Life Sciences, Institute of Waste Management, Department of Water, Atmosphere and Environment, Muthgasse 107, 1190 Vienna (Austria)]. E-mail: ena.smidt@boku.ac.at; Meissl, Katharina [BOKU - University of Natural Resources and Applied Life Sciences, Institute of Waste Management, Department of Water, Atmosphere and Environment, Muthgasse 107, 1190 Vienna (Austria)

2007-07-01T23:59:59.000Z

490

Konstrukcini? veiksni? ?taka sriegini? jung?i? element? deformavimui ir ilgaamžiškumui.  

E-Print Network (OSTI)

??Research area and topicality of the work. Large equipment such as pressure vessels, mining equipment, heat exchangers, steam generators and other structures are provided with… (more)

Selivonec, Jelena

2006-01-01T23:59:59.000Z

491

Intracavity trace molecular detection with a broadband mid-IR frequency comb source  

E-Print Network (OSTI)

Ultrasensitive detection of methane, isotopic carbon dioxide, carbon monoxide, formaldehyde, acetylene and ethylene is performed in the spectral range 2.5 - 5 \\mu m using intracavity spectroscopy in broadband optical parametric oscillators (OPOs). The OPOs were operated near degeneracy and synchronously pumped either by a mode-locked erbium (1560 nm) or thulium (2050 nm) fiber laser. A large instantaneous bandwidth of up to 800 cm$^{-1}$ allows for simultaneous detection of several gases. We observe an effective path length enhancement due to coherent interaction inside the OPO cavity and achieve part-per-billion sensitivity levels. The measured spectral shapes are in good agreement with a model that takes into account group delay dispersion across the broad OPO frequency band.

Haakestad, Magnus W; Leindecker, Nick; Marandi, Alireza; Vodopyanov, Konstantin L

2013-01-01T23:59:59.000Z

492

Experimental Determination of Damage Threshold Characteristics of IR Compatible Optical Materials  

SciTech Connect

The accelerating gradient in a laser-driven dielectric accelerating structure is often limited by the laser damage threshold of the structure. For a given laser-driven dielectric accelerator design, we can maximize the accelerating gradient by choosing the best combination of the accelerator's constituent material and operating wavelength. We present here a model of the damage mechanism from ultrafast infrared pulses and compare that model with experimental measurements of the damage threshold of bulk silicon. Additionally, we present experimental measurements of a variety of candidate materials, thin films, and nanofabricated accelerating structures.

Soong, Ken

2011-05-20T23:59:59.000Z

493

XRD and IR Studies of Yb{sup 3+} Doped Tellurite Glass  

Science Conference Proceedings (OSTI)

Ytterbium doped sodium-tellurite glasses having composition of (80-x) TeO{sub 2}-20Na{sub 2}O-(x)Yb{sub 2}O{sub 3}(where x = 0.0-2.0 mol%) are prepared by melt quenching technique. The crystallinity of the glass has been examined using X-ray diffraction technique. All glass are found to be amorphous in nature. Meanwhile the transmission spectroscopy is determine by using Infrared Spectroscopy. It is found that the absorption vibrational spectra occurs at range 3405-3423 cm{sup -1}, 1632-1643 cm{sup -1}, 1377-1382 cm{sup -1}, 721-732 cm{sup -1} and 589-606 cm{sup -1} peaks. The predominant peaks around 700 cm{sup -1} is due to the Te-O-Te vibration while peak at 600 cm{sup -1} is due to the vibration of Yb{sup 3+} ions.

Sahar, M. R.; Isa, H. Noor [Advanced Optical Material Reseach Group, Department of Physics, Universiti Teknologi Malaysia, 81310 Skudai Johor Bahru (Malaysia)

2011-03-30T23:59:59.000Z

494

Taikomojo šokio poveikis žmoni? su fizine negalia savijautai ir prisitaikymui visuomen?je.  

E-Print Network (OSTI)

??Nowadays about 10% of population in European Union about 38 million people are treated as disabled people. In Lithuania there are about 350 thousand disabled… (more)

Liaudinskien?,; Daiva

2006-01-01T23:59:59.000Z

495

Time of arrival and power delay profile estimation for IR-UWB systems  

Science Conference Proceedings (OSTI)

In time of arrival (TOA) estimation of received ultra-wideband (UWB) pulses, traditional maximum likelihood (ML) and generalized likelihood estimators become impractical because they require sampling at the Nyquist rate. Sub-Nyquist ML-based TOA estimation ... Keywords: Average power delay profile (APDP), Radio frequency identification (RFID), Source localization, Time of arrival (TOA) estimation, Ultra-wideband (UWB) pulse signals

Fang Shang; Benoit Champagne; Ioannis Psaromiligkos

2013-05-01T23:59:59.000Z

496

Polariton Enhanced IR Reflection Spectra of Epitaxial Graphene on SiC  

E-Print Network (OSTI)

We show ~10x polariton-enhanced infrared reflectivity of epitaxial graphene on 4H-SiC, in SiC's restrahlen band (8-10um). By fitting measurements to theory, we extract the thickness, N, in monolayers (ML), momentum scattering time, Fermi level position of graphene and estimate carrier mobility. By showing that 1/root(ns), the carrier concentration/ML, we argue that scattering is dominated by short-range interactions at the SiC/graphene interface. Polariton formation finds application in near-field optical devices such as superlenses.

Daas, B K; Sudarshan, T S; Chandrashekhar, M V S

2010-01-01T23:59:59.000Z

497

Tunable Visible and Near-IR Emission from Sub-10 nm Etched Single-Crystal Si  

E-Print Network (OSTI)

silicon devices in the form of light- emitting diode or laser structures. KEYWORDS Silicon nanowires

Heaton, Thomas H.

498

NIST: Atomic Spectroscopy Group - IR-vis-UV FTS optical path  

Science Conference Proceedings (OSTI)

... The NIST Fourier transform spectrometer consists of a folded Michelson interferometer with the two mirrors replaced by cat's-eye retroreflectors. ...

2010-10-05T23:59:59.000Z

499

Adaptive Inter-System Handover for Heterogeneous RF and IR Networks  

Science Conference Proceedings (OSTI)

Due to the complementary nature of radio and optical wireless (infrared) both in capacity and coverage, the combined use of both for data transmission could have advantages over a single technique. Varying network and traffic conditions put a big challenge ...

Jindong Hou; D. C. O'Brien

2005-04-01T23:59:59.000Z

500

Widely-tunable mid-IR frequency comb source based on difference frequency generation  

E-Print Network (OSTI)

We report on a mid-infrared frequency comb source of unprecedented tunability covering the entire 3-10 {\\mu}m molecular fingerprint region. The system is based on difference frequency generation in a GaSe crystal pumped by a 151 MHz Yb:fiber frequency comb. The process was seeded with Raman shifted solitons generated in a highly nonlinear suspended-core fiber with the same source. Average powers up to 1.5 mW were achieved at 4.7 {\\mu}m wavelength.

Ruehl, Axel; Hartl, Ingmar; Fermann, Martin E; Eikema, Kjeld S E; Marangoni, Marco

2012-01-01T23:59:59.000Z