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1

Regulation Of Nf=kb And Mnsod In Low Dose Radiation Induced Adaptive Protection Of Mouse And Human Skin Cells  

SciTech Connect (OSTI)

A sampling of publications resulting from this grant is provided. One is on the subject of NF-κB-Mediated HER2 Overexpression in Radiation-Adaptive Resistance. Another is on NF-κB-mediated adaptive resistance to ionizing radiation.

Jian Li

2012-11-07T23:59:59.000Z

2

Radiation-induced angiosarcoma  

E-Print Network [OSTI]

1a Figure 1b Figure 1. Radiation-induced angiosarcoma in afollowing completion of radiation therapy. Figure 2a Figurecell histiocytosis after radiation for breast carcinoma: can

Anzalone, C Lane; Cohen, Philip R; Diwan, Abdul H; Prieto, Victor G

2013-01-01T23:59:59.000Z

3

Radiation Induced Instability Patrick Hagerty  

E-Print Network [OSTI]

Radiation Induced Instability Patrick Hagerty #3; Department of Mathematics University of Michigan of Michigan Ann Arbor, MI 48109 abloch@math.lsa.umich.edu Michael I. Weinstein z Fundamental Mathematics a central rigid body which can radiate energy through exible components such as solar panels and antennae

Bloch, Anthony

4

Time dependent annealing of radiation - induced leakage currents in MOS devices  

SciTech Connect (OSTI)

Results are presented showing the radiation response of several unhardened commercial 1.25-{mu}m bulk CMOS processes using LOCOS isolation technology. In all cases studied radiation-induced failure is caused by effects in the field oxide, and the radiation-induced {delta}V{sub T} in the channel region is usually small at the failure dose. Time dependent leakage current data for the field oxides are presented and discussed.

Terrell, J.M. (Booz Allen and Hamilton, Inc. Bethesda, MD (US)); Olkham, T.R.; Lelis, A.J.; Benedetto, J.M. (Harry Diamond Labs., Adelphi, MD (US))

1989-12-01T23:59:59.000Z

5

Radiation-induced lung injury  

SciTech Connect (OSTI)

The use of radiation therapy is limited by the occurrence of the potentially fatal clinical syndromes of radiation pneumonitis and fibrosis. Radiation pneumonitis usually becomes clinically apparent from 2 to 6 months after completion of radiation therapy. It is characterized by fever, cough, dyspnea, and alveolar infiltrates on chest roentgenogram and may be difficult to differentiate from infection or recurrent malignancy. The pathogenesis is uncertain, but appears to involve both direct lung tissue toxicity and an inflammatory response. The syndrome may resolve spontaneously or may progress to respiratory failure. Corticosteroids may be effective therapy if started early in the course of the disease. The time course for the development of radiation fibrosis is later than that for radiation pneumonitis. It is usually present by 1 year following irradiation, but may not become clinically apparent until 2 years after radiation therapy. It is characterized by the insidious onset of dyspnea on exertion. It most often is mild, but can progress to chronic respiratory failure. There is no known successful treatment for this condition. 51 references.

Rosiello, R.A.; Merrill, W.W. (Yale Univ. Medical Center, New Haven, CT (USA))

1990-03-01T23:59:59.000Z

6

E-Print Network 3.0 - adaptive response ar Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of adaptation could approximate the ARs of P-cells on a single-trial basis in response to a richer stimulus... and color-sensitive pathway) showed response adaptation with...

7

Distributed Demand Response and User Adaptation in Smart Grids  

E-Print Network [OSTI]

This paper proposes a distributed framework for demand response and user adaptation in smart grid networks. In particular, we borrow the concept of congestion pricing in Internet traffic control and show that pricing information is very useful to regulate user demand and hence balance network load. User preference is modeled as a willingness to pay parameter which can be seen as an indicator of differential quality of service. Both analysis and simulation results are presented to demonstrate the dynamics and convergence behavior of the algorithm.

Fan, Zhong

2010-01-01T23:59:59.000Z

8

E-Print Network 3.0 - attenuates murine radiation-induced Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

radiation-induced Search Powered by Explorit Topic List Advanced Search Sample search results for: attenuates murine radiation-induced Page: << < 1 2 3 4 5 > >> 1 RADIATION...

9

Radiation induced strand breakage analyzed by tunel technique  

E-Print Network [OSTI]

RADIATION INDUCED STRAND BREAKAGE ANALYZED BY TUNEL TECHNIQUE A Thesis MAtuSSA DAWN REYNOLDS Submitted to the 015ce of Graduate Studies of Texas Ad. M University in partial fu1611ment of the requirements for the dree of MASTER OF SCIENCE May... 2003 Major Subject: Health Physics RADIATION INDUCED STRAND BREAKAGE ANALYZED BY TUNEL TECHNIQUE A Thesis MAtuSSA DAWN REYNOLDS Submitted to Texas %%:M University in partial fulfillmen of the requirements for the degree of MASTER OF SCIENCE...

Reynolds, Marissa Dawn

2003-01-01T23:59:59.000Z

10

Modeling radiation-induced mixing at interfaces between low solubility metals  

E-Print Network [OSTI]

This thesis studies radiation-induced mixing at interfaces between low solubility metals using molecular dynamics (MD) computer simulations. It provides original contributions on the fundamental mechanisms of radiation-induced ...

Zhang, Liang, Ph. D. Massachusetts Institute of Technology

2014-01-01T23:59:59.000Z

11

E-Print Network 3.0 - adaptive survival responses Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Computer Technologies and Information Sciences 8 Bystander effect and adaptive response in C3H 10TK cells S. A. MITCHELL, S. A. MARINO, D. J. BRENNER and E. J. HALL Summary:...

12

Flavin-Induced Oligomerization in Escherichia coli Adaptive Response Protein AidB  

E-Print Network [OSTI]

The process known as adaptive response allows Escherichia coli to respond to small doses of DNA-methylating agents by upregulating the expression of four proteins. While the role of three of these proteins in mitigating ...

Drennan, Catherine L.

13

adaptive immune response: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

vivo imaging of immune cell dynamics in skin in response to zinc-oxide nanoparticle exposure Boppart, Stephen 205 Transcriptomic Analysis of Host Immune and Cell Death...

14

adaptive immune responses: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

vivo imaging of immune cell dynamics in skin in response to zinc-oxide nanoparticle exposure Boppart, Stephen 205 Transcriptomic Analysis of Host Immune and Cell Death...

15

Between adaptation and resistance : labor responses to globalization in France  

E-Print Network [OSTI]

This dissertation aims at accounting for labor responses to globalization in France. It addresses this issue through a comparative study of two labor organizations-the French Democratic Labor Confederation (CFDT) and the ...

Ancelovici, Marcos, 1971-

2008-01-01T23:59:59.000Z

16

Global transcriptional, physiological and metabolite analyses of Desulfovibrio vulgaris Hildenborough responses to salt adaptation  

SciTech Connect (OSTI)

The response of Desulfovibrio vulgaris Hildenborough to salt adaptation (long-term NaCl exposure) was examined by physiological, global transcriptional, and metabolite analyses. The growth of D. vulgaris was inhibited by high levels of NaCl, and the growth inhibition could be relieved by the addition of exogenous amino acids (e.g., glutamate, alanine, tryptophan) or yeast extract. Salt adaptation induced the expression of genes involved in amino acid biosynthesis and transport, electron transfer, hydrogen oxidation, and general stress responses (e.g., heat shock proteins, phage shock proteins, and oxidative stress response proteins). Genes involved in carbon metabolism, cell motility, and phage structures were repressed. Comparison of transcriptomic profiles of D. vulgaris responses to salt adaptation with those of salt shock (short-term NaCl exposure) showed some similarity as well as a significant difference. Metabolite assays showed that glutamate and alanine were accumulated under salt adaptation, suggesting that they may be used as osmoprotectants in D. vulgaris. A conceptual model is proposed to link the observed results to currently available knowledge for further understanding the mechanisms of D. vulgaris adaptation to elevated NaCl.

He, Z.; Zhou, A.; Baidoo, E.; He, Q.; Joachimiak, M. P.; Benke, P.; Phan, R.; Mukhopadhyay, A.; Hemme, C.L.; Huang, K.; Alm, E.J.; Fields, M.W.; Wall, J.; Stahl, D.; Hazen, T.C.; Keasling, J.D.; Arkin, A.P.; Zhou, J.

2009-12-01T23:59:59.000Z

17

Radiative acceleration and transient, radiation-induced electric fields  

E-Print Network [OSTI]

The radiative acceleration of particles and the electrostatic potential fields that arise in low density plasmas hit by radiation produced by a transient, compact source are investigated. We calculate the dynamical evolution and asymptotic energy of the charged particles accelerated by the photons and the radiation-induced electric double layer in the full relativistic, Klein-Nishina regime. For fluxes in excess of $10^{27}$ ${\\rm erg} {\\rm cm}^{-2} {\\rm s}^{-1}$, the radiative force on a diluted plasma ($n\\la 10^{11}$ cm$^{-3}$) is so strong that electrons are accelerated rapidly to relativistic speeds while ions lag behind owing to their larger inertia. The ions are later effectively accelerated by the strong radiation-induced double layer electric field up to Lorentz factors $\\approx 100$, attainable in the case of negligible Compton drag. The asymptotic energies achieved by both ions and electrons are larger by a factor 2--4 with respect to what one could naively expect assuming that the electron-ion assembly is a rigidly coupled system. The regime we investigate may be relevant within the framework of giant flares from soft gamma-repeaters.

L. Zampieri; R. Turolla; L. Foschini; A. Treves

2003-04-14T23:59:59.000Z

18

Nature of Radiation-Induced Defects in Quartz  

E-Print Network [OSTI]

Although quartz ($\\rm \\alpha$-form) is a mineral used in numerous applications wherein radiation exposure is an issue, the nature of the atomistic defects formed during radiation-induced damage have not been fully clarified. Especially, the extent of oxygen vacancy formation is still debated, which is an issue of primary importance as optical techniques based on charged oxygen vacancies have been utilized to assess the level of radiation damage in quartz. In this paper, molecular dynamics (MD) simulations are applied to study the effects of ballistic impacts on the atomic network of quartz. We show that the defects that are formed mainly consist of over-coordinated Si and O, as well as Si--O connectivity defects, e.g., small Si--O rings and edge-sharing Si tetrahedra. Oxygen vacancies, on the contrary, are found in relatively low abundance, suggesting that characterizations based on $E^{\\prime}$ centers do not adequately capture radiation-induced structural damage in quartz. Finally, we evaluate the dependenc...

Wang, Bu; Pignatelli, Isabella; Sant, Gaurav N; Bauchy, Mathieu

2015-01-01T23:59:59.000Z

19

Real-Time Molecular Monitoring of Chemical Environment in ObligateAnaerobes during Oxygen Adaptive Response  

SciTech Connect (OSTI)

Determining the transient chemical properties of the intracellular environment canelucidate the paths through which a biological system adapts to changes in its environment, for example, the mechanisms which enable some obligate anaerobic bacteria to survive a sudden exposure to oxygen. Here we used high-resolution Fourier Transform Infrared (FTIR) spectromicroscopy to continuously follow cellular chemistry within living obligate anaerobes by monitoring hydrogen bonding in their cellular water. We observed a sequence of wellorchestrated molecular events that correspond to changes in cellular processes in those cells that survive, but only accumulation of radicals in those that do not. We thereby can interpret the adaptive response in terms of transient intracellular chemistry and link it to oxygen stress and survival. This ability to monitor chemical changes at the molecular level can yield important insights into a wide range of adaptive responses.

Holman, Hoi-Ying N.; Wozei, Eleanor; Lin, Zhang; Comolli, Luis R.; Ball, David. A.; Borglin, Sharon; Fields, Matthew W.; Hazen, Terry C.; Downing, Kenneth H.

2009-02-25T23:59:59.000Z

20

Radiation-induced solitary waves in hot plasmas of accretion disks  

E-Print Network [OSTI]

It is shown that the existence of radiation-induced solitary waves in hot plasmas of accretion disks depends on the radial temperature profile.

Fedor V. Prigara

2005-07-08T23:59:59.000Z

Note: This page contains sample records for the topic "radiation-induced adaptive responses" 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

E-Print Network 3.0 - attenuates ionizing radiation-induced Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

silica optical Summary: measurements and the so-called radiation-induced attenuation (RIA) measured in dBm. TSL measurements have been... measurements. Connections between...

22

Adaptive microbial population shifts in response to a continuous ethanol blend release increases biodegradation potential  

E-Print Network [OSTI]

Adaptive microbial population shifts in response to a continuous ethanol blend release increases 2013 Accepted 28 March 2013 Keywords: Pyrosequencing Ethanol Microbial diversity Temperature a b s t r a pilot- scale continuous release (10 months) of a 10% v:v ethanol solution mixed with benzene and toluene

Alvarez, Pedro J.

23

Bystander effect and adaptive response in C3H 10TK cells S. A. MITCHELL, S. A. MARINO, D. J. BRENNER and E. J. HALL  

E-Print Network [OSTI]

the bystander effect, adaptive response, genomic instabil- ity and low-dose hyper-radiosensitivity. These pheno

24

Scientists in a Changed Institutional Environment: Subjective Adaptation and Social Responsibility Norms in Russia  

SciTech Connect (OSTI)

How do scientists react when the institutional setting in which they conduct their work changes radically? How do long-standing norms regarding the social responsibility of scientists fare? What factors influence whether scientists embrace or reject the new institutions and norms? We examine these questions using data from a unique survey of 602 scientists in Russia, whose science system experienced a sustained crisis and sweeping changes in science institutions following the collapse of the Soviet Union. We develop measures of how respondents view financing based on grants and other institutional changes in the Russian science system, as well as measures of two norms regarding scientists social responsibility. We find that the majority of scientists have adapted, in the sense that they hold positive views of the new institutions, but a diversity of orientations remains. Social responsibility norms are common among Russian scientists, but far from universal. The main correlates of adaptation are age and current success at negotiating the new institutions, though prospective success, work context, and ethnicity have some of the hypothesized associations. As for social responsibility norms, the main source of variation is age: younger scientists are more likely to embrace individualistic rather than socially-oriented norms.

Gerber, T P; Ball, D Y

2008-06-05T23:59:59.000Z

25

Dosimetric Analysis of Radiation-induced Gastric Bleeding  

SciTech Connect (OSTI)

Purpose: Radiation-induced gastric bleeding has been poorly understood. In this study, we described dosimetric predictors for gastric bleeding after fractionated radiation therapy. Methods and Materials: The records of 139 sequential patients treated with 3-dimensional conformal radiation therapy (3D-CRT) for intrahepatic malignancies were reviewed. Median follow-up was 7.4 months. The parameters of a Lyman normal tissue complication probability (NTCP) model for the occurrence of {>=}grade 3 gastric bleed, adjusted for cirrhosis, were fitted to the data. The principle of maximum likelihood was used to estimate parameters for NTCP models. Results: Sixteen of 116 evaluable patients (14%) developed gastric bleeds at a median time of 4.0 months (mean, 6.5 months; range, 2.1-28.3 months) following completion of RT. The median and mean maximum doses to the stomach were 61 and 63 Gy (range, 46-86 Gy), respectively, after biocorrection of each part of the 3D dose distributions to equivalent 2-Gy daily fractions. The Lyman NTCP model with parameters adjusted for cirrhosis predicted gastric bleed. Best-fit Lyman NTCP model parameters were n=0.10 and m=0.21 and with TD{sub 50} (normal) = 56 Gy and TD{sub 50} (cirrhosis) = 22 Gy. The low n value is consistent with the importance of maximum dose; a lower TD{sub 50} value for the cirrhosis patients points out their greater sensitivity. Conclusions: This study demonstrates that the Lyman NTCP model has utility for predicting gastric bleeding and that the presence of cirrhosis greatly increases this risk. These findings should facilitate the design of future clinical trials involving high-dose upper abdominal radiation.

Feng, Mary, E-mail: maryfeng@umich.edu [Department of Radiation Oncology, University of Michigan School of Medicine, Ann Arbor, Michigan (United States)] [Department of Radiation Oncology, University of Michigan School of Medicine, Ann Arbor, Michigan (United States); Normolle, Daniel [Department of Biostatistics, University of Pittsburgh, Pittsburgh, Pennsylvania (United States)] [Department of Biostatistics, University of Pittsburgh, Pittsburgh, Pennsylvania (United States); Pan, Charlie C. [Department of Radiation Oncology, University of Michigan School of Medicine, Ann Arbor, Michigan (United States)] [Department of Radiation Oncology, University of Michigan School of Medicine, Ann Arbor, Michigan (United States); Dawson, Laura A. [Department of Radiation Oncology, Princess Margaret Hospital, University of Toronto, Toronto, Ontario (Canada)] [Department of Radiation Oncology, Princess Margaret Hospital, University of Toronto, Toronto, Ontario (Canada); Amarnath, Sudha [Department of Radiation Oncology, University of Michigan School of Medicine, Ann Arbor, Michigan (United States)] [Department of Radiation Oncology, University of Michigan School of Medicine, Ann Arbor, Michigan (United States); Ensminger, William D. [Department of Internal Medicine, Division of Hematology Oncology, University of Michigan School of Medicine, Ann Arbor, Michigan (United States)] [Department of Internal Medicine, Division of Hematology Oncology, University of Michigan School of Medicine, Ann Arbor, Michigan (United States); Lawrence, Theodore S.; Ten Haken, Randall K. [Department of Radiation Oncology, University of Michigan School of Medicine, Ann Arbor, Michigan (United States)] [Department of Radiation Oncology, University of Michigan School of Medicine, Ann Arbor, Michigan (United States)

2012-09-01T23:59:59.000Z

26

E-Print Network 3.0 - ameliorates radiation-induced lung Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Powered by Explorit Topic List Advanced Search Sample search results for: ameliorates radiation-induced lung Page: << < 1 2 3 4 5 > >> 1 doi:10.1016j.ijrobp.2003.12.010 BIOLOGY...

27

E-Print Network 3.0 - abnormalities radiation-induced Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

induced cataracts appeared earlier... . In the example given above, about 60% of the low- dose radiation-induced breast cancers comes from a very small... -type animals. 1.3....

28

Irradiated Esophageal Cells are Protected from Radiation-Induced Recombination by MnSOD Gene Therapy  

E-Print Network [OSTI]

Radiation-induced DNA damage is a precursor to mutagenesis and cytotoxicity. During radiotherapy, exposure of healthy tissues can lead to severe side effects. We explored the potential of mitochondrial SOD (MnSOD) gene ...

Niu, Yunyun

29

LDRD final report on adaptive-responsive nanostructures for sensing applications.  

SciTech Connect (OSTI)

Functional organic nanostructures such as well-formed tubes or fibers that can easily be fabricated into electronic and photonic devices are needed in many applications. Especially desirable from a national security standpoint are nanostructures that have enhanced sensitivity for the detection of chemicals and biological (CB) agents and other environmental stimuli. We recently discovered the first class of highly responsive and adaptive porphyrin-based nanostructures that may satisfy these requirements. These novel porphyrin nanostructures, which are formed by ionic self-assembly of two oppositely charged porphyrins, may function as conductors, semiconductors, or photoconductors, and they have additional properties that make them suitable for device fabrication (e.g., as ultrasensitive colorimetric CB microsensors). Preliminary studies with porphyrin nanotubes have shown that these nanostructures have novel optical and electronic properties, including strong resonant light scattering, quenched fluorescence, and electrical conductivity. In addition, they are photochemically active and capable of light-harvesting and photosynthesis; they may also have nonlinear optical properties. Remarkably, the nanotubes and potentially other porphyrin nanostructure are mechanically responsive and adaptive (e.g., the rigidity of the micrometers-long nanotubes is altered by light, ultrasound, or chemicals) and they self-heal upon removal the environmental stimulus. Given the tremendous degree of structural variation possible in the porphyrin subunits, additional types of nanostructures and greater control over their morphology can be anticipated. Molecular modification also provides a means of controlling their electronic, photonic, and other functional properties. In this work, we have greatly broadened the range of ionic porphyrin nanostructures that can be made, and determined the optical and responsivity properties of the nanotubes and other porphyrin nanostructures. We have also explored means for controlling their morphology, size, and placement on surfaces. The research proposed will lay the groundwork for the use of these remarkable porphyrin nanostructures in micro- and nanoscale devices, by providing a more detailed understanding of their molecular structure and the factors that control their structural, photophysical, and chemical properties.

Shelnutt, John Allen; van Swol, Frank B.; Wang, Zhongchun; Medforth, Craig J.

2005-11-01T23:59:59.000Z

30

Synchrotron-Radiation Induced X-Ray Emission (SRIXE)  

SciTech Connect (OSTI)

Elemental analysis using emission of characteristic x rays is a well-established scientific method. The success of this analytical method is highly dependent on the properties of the source used to produce the x rays. X-ray tubes have long existed as a principal excitation source, but electron and proton beams have also been employed extensively. The development of the synchrotron radiation x-ray source that has taken place during the past 40 years has had a major impact on the general field of x-ray analysis. Even tier 40 years, science of x-ray analysis with synchrotron x-ray beams is by no means mature. Improvements being made to existing synchrotron facilities and the design and construction of new facilities promise to accelerate the development of the general scientific use of synchrotron x-ray sources for at least the next ten years. The effective use of the synchrotron source technology depends heavily on the use of high-performance computers for analysis and theoretical interpretation of the experimental data. Fortunately, computer technology has advanced at least as rapidly as the x-ray technology during the past 40 years and should continue to do so during the next decade. The combination of these technologies should bring about dramatic advances in many fields where synchrotron x-ray science is applied. It is interesting also to compare the growth and rate of acceptance of this particular research endeavor to the rates for other technological endeavors. Griibler [1997] cataloged the time required for introduction, diffusion,and acceptance of technological, economic, and social change and found mean values of 40 to 50 years. The introduction of the synchrotron source depends on both technical and non-technical factors, and the time scale at which this seems to be occurring is quite compatible with what is seen for other major innovations such as the railroad or the telegraph. It will be interesting to see how long the present rate of technological change and increase in scientific use can be maintained for the synchrotron x-ray source. A short summary of the present state of the synchrotron radiation-induced x-ray emission (SRIXE) method is presented here. Basically, SRIXE experiments can include any that depend on the detection. of characteristic x-rays produced by the incident x-ray beam born the synchrotron source as they interact with a sample. Thus, experiments done to measure elemental composition, chemical state, crystal, structure, and other sample parameters can be considered in a discussion of SRIXE. It is also clear that the experimentalist may well wish to use a variety of complementary techniques for study of a given sample. For this reason, discussion of computed microtomography (CMT) and x-ray diffraction is included here. It is hoped that this present discussion will serve as a succinct introduction to the basic ideas of SRIXE for those not working in the field and possibly help to stimulate new types of work by those starting in the field as well as by experienced practitioners of the art. The topics covered include short descriptions of (1) the properties of synchrotron radiation, (2) a description of facilities used for its production, (3) collimated microprobe, (4) focused microprobes, (5) continuum and monoenergetic excitation, (6) detection limits, (7) quantitation, (8) applications of SRIXE, (9) computed microtomography (CMT), and (10)chemical speciation using x-ray absorption near-edge structure (XANES) and extended x-ray absorption fine structure (EXAFS). An effort has been made to cite a wide variety of work from different laboratories to show the vital nature of the field.

Jones, Keith W.

1999-09-01T23:59:59.000Z

31

Studies on Pentoxifylline and Tocopherol Combination for Radiation-Induced Heart Disease in Rats  

SciTech Connect (OSTI)

Purpose: To investigate whether the application of pentoxifylline (PTX) and tocopherol l (Vit. E) could modify the development of radiation-induced heart disease and downregulate the expression of transforming growth factor (TGF)-{beta}1mRNA in rats. Methods and Materials: A total of 120 Sprague-Dawley rats were separated into four groups: control group, irradiated group, experimental group 1, and experiment group 2. Supplementation was started 3 days before irradiation; in experimental group 1, injection of PTX (15 mg/kg/d) and Vit. E (5.5 mg/kg/d) continued till the 12th week postirradiation, whereas in experimental group 2 it was continued until the 24th week postirradiation. All rats were administrated a single dose of 20 Gy irradiation to the heart except the control group. Histopathologic evaluation was performed at various time points (Days 1, 2, 4, 8, and 12 and 24th week) up to 24 weeks after irradiation. Changes of levels of TGF-{beta}1 mRNA expression were also investigated at the same time points using competitive polymerase chain reaction. Results: Compared with the irradiated group, levels of TGF-{beta}1 mRNA of the rat hearts were relatively low in the two experimental groups on the 12th week postirradiation. In experimental group 1, there was a rebound expression of TGF-{beta}1 mRNA on the 24th week postirradiation, whereas that of the experimental group 2 remained low (p < 0.05). The proportions of collagen fibers of the two experimental groups were lower than that of irradiated group (p < 0.05). A rebound could be observed in the experimental group 1. Conclusion: PTX and Vit. E downregulated the expression of TGF-{beta}1 mRNA. The irradiated rat hearts showed a marked pathologic response to the drugs. The withdrawal of drugs in the 12th week postirradiation could cause rebound effects of the development of fibrosis.

Liu Hui [State Key Laboratory of Oncology in South China, Guangzhou, Guangdong (China); Department of Radiotherapy, Cancer Center, Sun Yat-sen University, Guangzhou, Guangdong (China); Xiong Mai [Department of Cardiac Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong (China); Xia Yunfei; Cui Nianji; Lu Rubiao [State Key Laboratory of Oncology in South China, Guangzhou, Guangdong (China); Department of Radiotherapy, Cancer Center, Sun Yat-sen University, Guangzhou, Guangdong (China); Deng Ling [State Key Laboratory of Oncology in South China, Guangzhou, Guangdong (China); Department of Pathology, Cancer Center, Sun Yat-sen University, Guangzhou, Guangdong (China); Lin Yuehao [State Key Laboratory of Oncology in South China, Guangzhou, Guangdong (China); Clinical Laboratory, Cancer Center, Sun Yat-sen University, Guangzhou, Guangdong (China); Rong Tiehua [State Key Laboratory of Oncology in South China, Guangzhou, Guangdong (China); Department of Thoracic Surgery, Cancer Center, Sun Yat-sen University, Guangzhou, Guangdong (China)], E-mail: esophagus2003@yahoo.com.cn

2009-04-01T23:59:59.000Z

32

Radiation-Induced Carcinogenesis: Mechanistically Based Differences between Gamma-Rays and Neutrons, and  

E-Print Network [OSTI]

Radiation-Induced Carcinogenesis: Mechanistically Based Differences between Gamma-Rays and Neutrons of Radiation Oncology, The University of Texas Medical Branch, Galveston, Texas, United States of America Abstract Different types of ionizing radiation produce different dependences of cancer risk on radiation

Brenner, David Jonathan

33

Pressure-sensitive blackbody point radiation induced by infrared diode laser irradiation  

E-Print Network [OSTI]

Pressure-sensitive blackbody point radiation induced by infrared diode laser irradiation Feng Qin,1 accuracy. © 2011 Optical Society of America OCIS codes: 350.5610, 290.6815, 280.6780, 280.5475. Trivalent, and optical amplifiers in fiber optics. [1,2]. In recent years, there has been an increasing interest

Cao, Wenwu

34

Comparison of radiation-induced transmission degradation of borosilicate crown optical glass from four different manufacturers  

E-Print Network [OSTI]

glass. Our results show that whereas the glasses are optically similar before irradiation, they showComparison of radiation-induced transmission degradation of borosilicate crown optical glass from of Optics and Photonics/CREOL 4000 Central Florida Blvd. Orlando, FL 32816-2700, USA d SCK·CEN Belgian

Glebov, Leon

35

Radiation induced by charged particles in optical fibers Xavier Artru and Cedric Ray  

E-Print Network [OSTI]

Radiation induced by charged particles in optical fibers Xavier Artru and C´edric Ray Universit, 4, 5]. Let us mention two other uses of optical fibers as particle detectors : (i) as dosimeters, through the effect of darkening by irradiation [6]; (ii) in scintillating glass fibers for particle

Paris-Sud XI, Université de

36

Debris and Radiation-Induced Damage Effects on EUV Nanolithography Source Collector Mirror Optics Performance  

E-Print Network [OSTI]

Debris and Radiation-Induced Damage Effects on EUV Nanolithography Source Collector Mirror Optics, Argonne, Illinois ABSTRACT Exposure of collector mirrors facing the hot, dense pinch plasma in plasma region of the lamp are known to induce serious damage to nearby collector mirrors. Candidate collector

Harilal, S. S.

37

A Nonhuman Primate Model of Human Radiation-Induced Venocclusive Liver Disease and Hepatocyte Injury  

SciTech Connect (OSTI)

Background: Human liver has an unusual sensitivity to radiation that limits its use in cancer therapy or in preconditioning for hepatocyte transplantation. Because the characteristic veno-occlusive lesions of radiation-induced liver disease do not occur in rodents, there has been no experimental model to investigate the limits of safe radiation therapy or explore the pathogenesis of hepatic veno-occlusive disease. Methods and Materials: We performed a dose-escalation study in a primate, the cynomolgus monkey, using hypofractionated stereotactic body radiotherapy in 13 animals. Results: At doses ?40 Gy, animals developed a systemic syndrome resembling human radiation-induced liver disease, consisting of decreased albumin, elevated alkaline phosphatase, loss of appetite, ascites, and normal bilirubin. Higher radiation doses were lethal, causing severe disease that required euthanasia approximately 10 weeks after radiation. Even at lower doses in which radiation-induced liver disease was mild or nonexistent, latent and significant injury to hepatocytes was demonstrated by asialoglycoprotein-mediated functional imaging. These monkeys developed hepatic failure with encephalopathy when they received parenteral nutrition containing high concentrations of glucose. Histologically, livers showed central obstruction via an unusual intimal swelling that progressed to central fibrosis. Conclusions: The cynomolgus monkey, as the first animal model of human veno-occlusive radiation-induced liver disease, provides a resource for characterizing the early changes and pathogenesis of venocclusion, for establishing nonlethal therapeutic dosages, and for examining experimental therapies to minimize radiation injury.

Yannam, Govardhana Rao [Department of Surgery, University of Nebraska Medical Center, Omaha, Nebraska (United States); Han, Bing [Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania (United States); Department of Hepatobiliary Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi (China); Setoyama, Kentaro [Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania (United States); Yamamoto, Toshiyuki [Department of Surgery, University of Nebraska Medical Center, Omaha, Nebraska (United States); Ito, Ryotaro; Brooks, Jenna M. [Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania (United States); Guzman-Lepe, Jorge [Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania (United States); Department of Pathology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (United States); Galambos, Csaba [Department of Pathology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (United States); Fong, Jason V. [Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania (United States); Deutsch, Melvin; Quader, Mubina A. [Department of Radiation Oncology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (United States); Yamanouchi, Kosho [Department of Radiation Oncology, Albert Einstein College of Medicine, Bronx, New York (United States); Marion Bessin Liver Research Center, Albert Einstein College of Medicine, Bronx, New York (United States); Kabarriti, Rafi; Mehta, Keyur [Department of Radiation Oncology, Albert Einstein College of Medicine, Bronx, New York (United States); Soto-Gutierrez, Alejandro [Department of Pathology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (United States); McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania (United States); and others

2014-02-01T23:59:59.000Z

38

Mutation Research 504 (2002) 91100 Bystander effects in radiation-induced genomic instability  

E-Print Network [OSTI]

Mutation Research 504 (2002) 91­100 Bystander effects in radiation-induced genomic instability recombination and other phenotypes associated with genomic instability. © 2002 Elsevier Science B.V. All rights reserved. Keywords: Bystander effects; Genomic instability; Ionizing radiation 1. Introduction Exposure

39

Radiation induces turbulence in particle-laden fluids  

SciTech Connect (OSTI)

When a transparent fluid laden with solid particles is subject to radiative heating, non-uniformities in particle distribution result in local fluid temperature fluctuations. Under the influence of gravity, buoyancy induces vortical fluid motion which can lead to strong preferential concentration, enhancing the local heating and more non-uniformities in particle distribution. By employing direct numerical simulations this study shows that the described feedback loop can create and sustain turbulence. The velocity and length scale of the resulting turbulence is not known a priori, and is set by balance between viscous forces and buoyancy effects. When the particle response time is comparable to a viscous time scale, introduced in our analysis, the system exhibits intense fluctuations of turbulent kinetic energy and strong preferential concentration of particles.

Zamansky, Rmi [Centre for Turbulence Research, Stanford University, Stanford, California 94305-3035 (United States); Coletti, Filippo [Mechanical Engineering, Stanford University, California 94305-3035 (United States); Massot, Marc [Centre for Turbulence Research, Stanford University, Stanford, California 94305-3035 (United States); Ecole Centrale Paris, Laboratoire EM2C - UPR CNRS 288 et Fdration de Mathmatiques - FR CNRS 3487, Grande Voie des Vignes, 92295 Chatenay-Malabry Cedex (France); Mani, Ali [Centre for Turbulence Research, Stanford University, Stanford, California 94305-3035 (United States); Mechanical Engineering, Stanford University, California 94305-3035 (United States)

2014-07-15T23:59:59.000Z

40

E-Print Network 3.0 - adaptive responses genomic Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Selected Topics in Molecular Biology Summary: genome variation - cancer genomes Genomics of the adaptive immune system Ancient genomes Synthetic... MOLECULAR BIOLOGY...

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


41

The versatile E. coli adaptive response protein AlkB mitigates toxicity and mutagenicity of etheno-, ethano-, and methyl-modified bases in vivo  

E-Print Network [OSTI]

The Escherichia coli AlkB protein is an exceptionally versatile DNA repair enzyme. Its expression is induced upon exposure to alkylating agents as part of the Ada-mediated adaptive response. This member of the ac-ketoglu ...

Frick, Lauren Elizabeth

2007-01-01T23:59:59.000Z

42

A Systems Genetic Approach to Identify Low Dose Radiation-Induced Lymphoma Susceptibility/DOE2013FinalReport  

SciTech Connect (OSTI)

The ultimate goal of this project is to identify the combinations of genetic variants that confer an individual's susceptibility to the effects of low dose (0.1 Gy) gamma-radiation, in particular with regard to tumor development. In contrast to the known effects of high dose radiation in cancer induction, the responses to low dose radiation (defined as 0.1 Gy or less) are much less well understood, and have been proposed to involve a protective anti-tumor effect in some in vivo scientific models. These conflicting results confound attempts to develop predictive models of the risk of exposure to low dose radiation, particularly when combined with the strong effects of inherited genetic variants on both radiation effects and cancer susceptibility. We have used a ??Systems Genetics approach in mice that combines genetic background analysis with responses to low and high dose radiation, in order to develop insights that will allow us to reconcile these disparate observations. Using this comprehensive approach we have analyzed normal tissue gene expression (in this case the skin and thymus), together with the changes that take place in this gene expression architecture a) in response to low or high- dose radiation and b) during tumor development. Additionally, we have demonstrated that using our expression analysis approach in our genetically heterogeneous/defined radiation-induced tumor mouse models can uniquely identify genes and pathways relevant to human T-ALL, and uncover interactions between common genetic variants of genes which may lead to tumor susceptibility.

Balmain, Allan [University of California, San Francisco; Song, Ihn Young [University of California, San Francisco

2013-05-15T23:59:59.000Z

43

E-Print Network 3.0 - adaptive melanin response Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Biology and Medicine 3 Cutaneous melanin exhibiting fluorescence emission under near-infrared light excitation Summary: of the major fluorophores responsible for...

44

E-Print Network 3.0 - adaptive metabolic response Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

bass (Micropterus salmoides) Summary: factor, there are a range of responses depending on test conditions and baseline metabolic rate... for greater differences in metabolic rate...

45

Radiation-induced complications in prostate cancer patients treated with radiotherapy  

SciTech Connect (OSTI)

The purpose of the study is to determine the relationship between radiation-induced complications with dosimetric and radiobiological parameters for prostate cancer patients that underwent the conformal radiotherapy treatment. 17 prostate cancer patients that have been treated with conformal radiotherapy were retrospectively analysed. The dosimetric data was retrieved in the form of dose-volume histogram (DVH) from Radiotherapy Treatment Planning System. The DVH was utilised to derived Normal Tissue Complication Probability (NTCP) in radiobiological data. Follow-up data from medical records were used to grade the occurrence of acute gastrointestinal (GI) and genitourinary (GU) complications using Radiation Therapy Oncology Group (RTOG) scoring system. The chi-square test was used to determine the relationship between radiation-induced complication with dosimetric and radiobiological parameters. 8 (47%) and 7 (41%) patients were having acute GI and GU complications respectively. The acute GI complication can be associated with V60{sub rectum}, rectal mean dose and NTCP{sub rectum} with p-value of 0.016, 0.038 and 0.049 respectively. There are no significant relationships of acute GU complication with dosimetric and radiobiological variables. Further study can be done by increase the sample size and follow up duration for deeper understanding of the factors that effecting the GU and GI complication in prostate cancer radiotherapy.

Azuddin, A. Yusof [School of Applied Physics, Faculty of Sciences and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia and Faculty of Health Sciences, Universiti Kebangsaan Malaysia, 53000 Kuala Lumpur (Malaysia); Rahman, I. Abdul; Mohamed, F. [School of Applied Physics, Faculty of Sciences and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor (Malaysia); Siah, N. J. [Faculty of Health Sciences, Universiti Kebangsaan Malaysia, 53000 Kuala Lumpur (Malaysia); Saadc, M. [Department of Oncology, University Malaya Medical Center, 50603 Kuala Lumpur (Malaysia); Ismail, F. [Department of Oncology and Radiotherapy, Universiti Kebangsaan Malaysia Medical Centre, 56000 Cheras, Kuala Lumpur (Malaysia)

2014-09-03T23:59:59.000Z

46

Sorafenib Enhances Radiation-Induced Apoptosis in Hepatocellular Carcinoma by Inhibiting STAT3  

SciTech Connect (OSTI)

Purpose: Hepatocellular carcinoma (HCC) is one of the most common and lethal human malignancies. Lack of efficient therapy for advanced HCC is a pressing problem worldwide. This study aimed to determine the efficacy and mechanism of combined sorafenib and radiation therapy treatment for HCC. Methods and Materials: HCC cell lines (PLC5, Huh-7, Sk-Hep1, and Hep3B) were treated with sorafenib, radiation, or both, and apoptosis and signal transduction were analyzed. Results: All 4 HCC cell lines showed resistance to radiation-induced apoptosis; however, this resistance could be reversed in the presence of sorafenib. Inhibition of phospho-STAT3 was found in cells treated with sorafenib or sorafenib plus radiation and subsequently reduced the expression levels of STAT3-related proteins, Mcl-1, cyclin D1, and survivin. Silencing STAT3 by RNA interference overcame apoptotic resistance to radiation in HCC cells, and the ectopic expression of STAT3 in HCC cells abolished the radiosensitizing effect of sorafenib. Moreover, sorafenib plus radiation significantly suppressed PLC5 xenograft tumor growth. Conclusions: These results indicate that sorafenib sensitizes resistant HCC cells to radiation-induced apoptosis via downregulating phosphorylation of STAT3 in vitro and in vivo.

Huang, Chao-Yuan [Department of Oncology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan (China) [Department of Oncology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan (China); Department of Radiological Technology, Yuanpei University, Hsinchu, Taiwan (China); Lin, Chen-Si [School of Veterinary Medicine, National Taiwan University Hospital, Taipei, Taiwan (China)] [School of Veterinary Medicine, National Taiwan University Hospital, Taipei, Taiwan (China); Tai, Wei-Tien; Hsieh, Chi-Ying [Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan (China) [Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan (China); National Center of Excellence for Clinical Trial and Research, National Taiwan University Hospital, Taipei, Taiwan (China); Shiau, Chung-Wai [Institute of Biopharmaceutical Sciences, National Yang-Ming University, Taipei, Taiwan (China)] [Institute of Biopharmaceutical Sciences, National Yang-Ming University, Taipei, Taiwan (China); Cheng, Ann-Lii [Department of Oncology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan (China) [Department of Oncology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan (China); National Center of Excellence for Clinical Trial and Research, National Taiwan University Hospital, Taipei, Taiwan (China); Chen, Kuen-Feng, E-mail: kfchen1970@ntu.edu.tw [Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan (China) [Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan (China); National Center of Excellence for Clinical Trial and Research, National Taiwan University Hospital, Taipei, Taiwan (China)

2013-07-01T23:59:59.000Z

47

Risk Analysis and Adaptive Response Planning for Water Distribution Systems Contamination Emergency Management  

E-Print Network [OSTI]

are investigated. Pressure-driven hydraulic analysis is performed to simulate the complicated system hydraulics under pressure-deficit conditions. Performance of a novel preventive response action ? injection of food-grade dye directly into drinking water...

Rasekh, Amin

2012-10-19T23:59:59.000Z

48

Adaptive phenotypic differentiation of courtship in response to recent anthropogenic disturbance  

E-Print Network [OSTI]

differentiated in response to spatial variation in human-induced eutrophication? Populations: Parallel pairs-induced eutrophication during the last decades. Methods: Males from mildly and severely eutrophied habitats were allowed variation in human-induced eutrophication. The differentiation should improve individual fitness. Keywords

Candolin, Ulrika

49

Gamma radiation-induced refractive index change in Ge- and N-doped silica  

SciTech Connect (OSTI)

We measured the change of the refractive index over a wide wavelength range in Ge- and N-doped high purity (fiber optics grade) silica glasses subjected to gamma irradiation. The radiation-induced change of the refractive index tends to be greater in the infrared part of the spectrum compare to the values measured in the UV-visible part of the spectrum. By means of the Kramers-Kronig relations, we estimate that a weak broadening of the optical vibration band of the silica network adds to this effect. The paper also discusses the difference observed in the spectral behavior of the induced refractive index change for both types of doped glass.

Brichard, Benoit [SCK-CEN-Belgian Nuclear Research Center, Boeretang 200, 2400 Mol (Belgium); Butov, Oleg V.; Golant, Konstantin M. [Fiber Optics Research Center, Russian Academy of Sciences, Vavilov Street 38, 119991 Moscow (Russian Federation); Fernandez Fernandez, Alberto [Masterminds Ltd., rue du Temple 40, CH-2800 Delemont (Switzerland)

2008-03-01T23:59:59.000Z

50

Radiation-Induced Segregation and Phase Stability in Candidate Alloys for the Advanced Burner Reactor  

SciTech Connect (OSTI)

Major accomplishments of this project were the following: 1) Radiation induced depletion of Cr occurs in alloy D9, in agreement with that observed in austenitic alloys. 2) In F-M alloys, Cr enriches at PAG grain boundaries at low dose (<7 dpa) and at intermediate temperature (400C) and the magnitude of the enrichment decreases with temperature. 3) Cr enrichment decreases with dose, remaining enriched in alloy T91 up to 10 dpa, but changing to depletion above 3 dpa in HT9 and HCM12A. 4) Cr has a higher diffusivity than Fe by a vacancy mechanism and the corresponding atomic flux of Cr is larger than Fe in the opposite direction to the vacancy flux. 5) Cr concentration at grain boundaries decreases as a result of vacancy transport during electron or proton irradiation, consistent with Inverse Kirkendall models. 6) Inclusion of other point defect sinks into the KLMC simulation of vacancy-mediated diffusion only influences the results in the low temperature, recombination dominated regime, but does not change the conclusion that Cr depletes as a result of vacancy transport to the sink. 7) Cr segregation behavior is independent of Frenkel pair versus cascade production, as simulated for electron versus proton irradiation conditions, for the temperatures investigated. 8) The amount of Cr depletion at a simulated planar boundary with vacancy-mediated diffusion reaches an apparent saturation value by about 1 dpa, with the precise saturation concentration dependent on the ratio of Cr to Fe diffusivity. 9) Cr diffuses faster than Fe by an interstitial transport mechanism, and the corresponding atomic flux of Cr is much larger than Fe in the same direction as the interstitial flux. 10) Observed experimental and computational results show that the radiation induced segregation behavior of Cr is consistent with an Inverse Kirkendall mechanism.

Gary S. Was; Brian D. Wirth

2011-05-29T23:59:59.000Z

51

Normal Tissue Complication Probability Modeling of Radiation-Induced Hypothyroidism After Head-and-Neck Radiation Therapy  

SciTech Connect (OSTI)

Purpose: To determine the dose-response relationship of the thyroid for radiation-induced hypothyroidism in head-and-neck radiation therapy, according to 6 normal tissue complication probability models, and to find the best-fit parameters of the models. Methods and Materials: Sixty-five patients treated with primary or postoperative radiation therapy for various cancers in the head-and-neck region were prospectively evaluated. Patient serum samples (tri-iodothyronine, thyroxine, thyroid-stimulating hormone [TSH], free tri-iodothyronine, and free thyroxine) were measured before and at regular time intervals until 1 year after the completion of radiation therapy. Dose-volume histograms (DVHs) of the patients' thyroid gland were derived from their computed tomography (CT)-based treatment planning data. Hypothyroidism was defined as increased TSH (subclinical hypothyroidism) or increased TSH in combination with decreased free thyroxine and thyroxine (clinical hypothyroidism). Thyroid DVHs were converted to 2 Gy/fraction equivalent doses using the linear-quadratic formula with {alpha}/{beta} = 3 Gy. The evaluated models included the following: Lyman with the DVH reduced to the equivalent uniform dose (EUD), known as LEUD; Logit-EUD; mean dose; relative seriality; individual critical volume; and population critical volume models. The parameters of the models were obtained by fitting the patients' data using a maximum likelihood analysis method. The goodness of fit of the models was determined by the 2-sample Kolmogorov-Smirnov test. Ranking of the models was made according to Akaike's information criterion. Results: Twenty-nine patients (44.6%) experienced hypothyroidism. None of the models was rejected according to the evaluation of the goodness of fit. The mean dose model was ranked as the best model on the basis of its Akaike's information criterion value. The D{sub 50} estimated from the models was approximately 44 Gy. Conclusions: The implemented normal tissue complication probability models showed a parallel architecture for the thyroid. The mean dose model can be used as the best model to describe the dose-response relationship for hypothyroidism complication.

Bakhshandeh, Mohsen [Department of Medical Physics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran (Iran, Islamic Republic of)] [Department of Medical Physics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran (Iran, Islamic Republic of); Hashemi, Bijan, E-mail: bhashemi@modares.ac.ir [Department of Medical Physics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran (Iran, Islamic Republic of)] [Department of Medical Physics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran (Iran, Islamic Republic of); Mahdavi, Seied Rabi Mehdi [Department of Medical Physics, Faculty of Medical Sciences, Tehran University of Medical Sciences, Tehran (Iran, Islamic Republic of)] [Department of Medical Physics, Faculty of Medical Sciences, Tehran University of Medical Sciences, Tehran (Iran, Islamic Republic of); Nikoofar, Alireza; Vasheghani, Maryam [Department of Radiation Oncology, Hafte-Tir Hospital, Tehran University of Medical Sciences, Tehran (Iran, Islamic Republic of)] [Department of Radiation Oncology, Hafte-Tir Hospital, Tehran University of Medical Sciences, Tehran (Iran, Islamic Republic of); Kazemnejad, Anoshirvan [Department of Biostatistics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran (Iran, Islamic Republic of)] [Department of Biostatistics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran (Iran, Islamic Republic of)

2013-02-01T23:59:59.000Z

52

Neurodegeneration and adaptation in response to low-dose photon irradiation  

SciTech Connect (OSTI)

Neural stem and precursor cells (i.e. multipotent neural cells) are concentrated in the neurogenic regions of the brain (hippocampal dentate gyrus, subventricular zones), and considerable evidence suggests that these cells are important in mediating the stress response of the CNS after damage from ionizing radiation. The capability of these cells to proliferate, migrate and differentiate (i.e. to undergo neurogenesis) suggests they can participate in the repair and maintenance of CNS functions by replacing brain cells damaged or depleted due to irradiation. Importantly, we have shown that multipotent neural cells are markedly sensitive to irradiation and oxidative stress, insults that compromise neurogenesis and hasten the onset and progression of degenerative processes that are likely to have an adverse impact on cognition. Our past and current work has demonstrated that relatively low doses of radiation cause a persistent (weeks-months) oxidative stress in multipotent neural cells that can elicit a range of degenerative sequelae in the CNS. Therefore, our project is focused on determining the extent that endogenous and redox sensitive multipotent neural cells represent important radioresponsive targets for low dose radiation effects. We hypothesize that the activation of redox sensitive signaling can trigger radioadaptive changes in these cells that can be either harmful or beneficial to overall cognitive health.

Limoli, Charles L. [UCI

2014-10-27T23:59:59.000Z

53

Radiation-Induced Decomposition of U(VI) Phase to Nanocrystals of UO2  

SciTech Connect (OSTI)

U{sup 6+}-phases are common alteration products, under oxidizing conditions, of uraninite and the UO{sub 2} in spent nuclear fuel. These U{sup 6+}-phases are subjected to a radiation field caused by the {alpha}-decay of U, or in the case of spent nuclear fuel, incorporated actinides, such as {sup 239}Pu and {sup 237}Np. In order to evaluate the effects of {alpha}-decay events on the stability of the U{sup 6+}-phases, we report, for the first time, the results of ion beam irradiations (1.0 MeV Kr{sup 2+}) of U{sup 6+}-phases. The heavy-particle irradiations are used to simulate the ballistic interactions of the recoil-nucleus of an {alpha}-decay event with the surrounding structure. The Kr{sup 2+}-irradiation decomposed the U{sup 6+}-phases to UO{sub 2} nanocrystals at doses as low as 0.006 displacements per atom (dpa). U{sup 6+}-phases accumulate substantial radiation doses ({approx}1.0 displacement per atom) within 100,000 years if the concentration of incorporated {sup 239}Pu is as high as 1 wt%. Similar nanocrystals of UO{sub 2} were observed in samples from the natural fission reactors at Oklo, Gabon. Multiple cycles of radiation-induced decomposition to UO{sub 2} followed by alteration to U{sup 6+}-phases provide a mechanism for the remobilization of incorporated radionuclides.

S. Utsunomiya; R.C. Ewing; L. Wang

2005-06-13T23:59:59.000Z

54

Effect of solvents on the radiation-induced polymerization of ethyl and isopropyl vinyl ethers  

SciTech Connect (OSTI)

The effect of solvents on the radiation-induced cationic polymerization of ethyl and isopropyl vinyl ethers (EVE and IPVE, respectively) was investigated. EVE and IPVE polymerizations were carried out in bulk and in solution under superdry conditions in which polar impurities, especially water, have been reduced to negligible levels. This was accomplished by means of a sodium mirror technique using joint free baked out glass equipment and high vacuum. Plots of the monomer conversions and irradiation times were obtained for EVE and IPVE polymerizations in bulk and in benzene solution at constant monomer concentrations. The monomer concentration dependence of the polymerization rate was studied for EVE polymerization in bulk and in benzene, diethlyl ether, diglyme and methylene chloride, and for IPVE polymerization in bulk and in benzene. Solvent effect on the estimated propagating rate constants was examined for EVE and IPVE polymerization in bulk and in solution. The effect of temperature on the polymerization rate was also investigated for EVE polymerization in bulk ad in benzene, diethyl and diisopropyl ethers, methylene chloride and nitromethane, and for IPVE ploymerization in bulk and in benzene.

Hsieh, W.C.

1981-01-01T23:59:59.000Z

55

Adaptation and adaptability : expectant design for resilience in coastal urbanity  

E-Print Network [OSTI]

What is the nature of and possibility for urban resiliency through adaptation? Adaptation implies responsiveness to phenomena that are disruptive to a system's functioning; it is a willful evolution in response to changed ...

Ruskeep, Laura A. Delaney (Laura Ashley Delaney)

2011-01-01T23:59:59.000Z

56

Roles of Sensory Nerves in the Regulation of Radiation-Induced Structural and Functional Changes in the Heart  

SciTech Connect (OSTI)

Purpose: Radiation-induced heart disease (RIHD) is a chronic severe side effect of radiation therapy of intrathoracic and chest wall tumors. The heart contains a dense network of sensory neurons that not only are involved in monitoring of cardiac events such as ischemia and reperfusion but also play a role in cardiac tissue homeostasis, preconditioning, and repair. The purpose of this study was to examine the role of sensory nerves in RIHD. Methods and Materials: Male Sprague-Dawley rats were administered capsaicin to permanently ablate sensory nerves, 2 weeks before local image-guided heart x-ray irradiation with a single dose of 21 Gy. During the 6 months of follow-up, heart function was assessed with high-resolution echocardiography. At 6 months after irradiation, cardiac structural and molecular changes were examined with histology, immunohistochemistry, and Western blot analysis. Results: Capsaicin pretreatment blunted the effects of radiation on myocardial fibrosis and mast cell infiltration and activity. By contrast, capsaicin pretreatment caused a small but significant reduction in cardiac output 6 months after irradiation. Capsaicin did not alter the effects of radiation on cardiac macrophage number or indicators of autophagy and apoptosis. Conclusions: These results suggest that sensory nerves, although they play a predominantly protective role in radiation-induced cardiac function changes, may eventually enhance radiation-induced myocardial fibrosis and mast cell activity.

Sridharan, Vijayalakshmi; Tripathi, Preeti [Department of Pharmaceutical Sciences, Division of Radiation Health, University of Arkansas for Medical Sciences, Little Rock, Arkansas (United States); Sharma, Sunil [Department of Radiation Oncology, Division of Radiation Health, University of Arkansas for Medical Sciences, Little Rock, Arkansas (United States); Moros, Eduardo G. [Department of Radiation Oncology, Moffitt Cancer Center and Research Institute, Tampa, Florida (United States); Zheng, Junying [Department of Pharmaceutical Sciences, Division of Radiation Health, University of Arkansas for Medical Sciences, Little Rock, Arkansas (United States); Hauer-Jensen, Martin [Department of Pharmaceutical Sciences, Division of Radiation Health, University of Arkansas for Medical Sciences, Little Rock, Arkansas (United States); Surgical Service, Central Arkansas Veterans Healthcare System, Little Rock, Arkansas (United States); Boerma, Marjan, E-mail: mboerma@uams.edu [Department of Pharmaceutical Sciences, Division of Radiation Health, University of Arkansas for Medical Sciences, Little Rock, Arkansas (United States)

2014-01-01T23:59:59.000Z

57

Poor Baseline Pulmonary Function May Not Increase the Risk of Radiation-Induced Lung Toxicity  

SciTech Connect (OSTI)

Purpose: Poor pulmonary function (PF) is often considered a contraindication to definitive radiation therapy for lung cancer. This study investigated whether baseline PF was associated with radiation-induced lung toxicity (RILT) in patients with non-small cell lung cancer (NSCLC) receiving conformal radiation therapy (CRT). Methods and Materials: NSCLC patients treated with CRT and tested for PF at baseline were eligible. Baseline predicted values of forced expiratory volume in 1 sec (FEV1), forced vital capacity (FVC), and diffusion capacity of lung for carbon monoxide (DLCO) were analyzed. Additional factors included age, gender, smoking status, Karnofsky performance status, coexisting chronic obstructive pulmonary disease (COPD), tumor location, histology, concurrent chemotherapy, radiation dose, and mean lung dose (MLD) were evaluated for RILT. The primary endpoint was symptomatic RILT (SRILT), including grade ?2 radiation pneumonitis and fibrosis. Results: There was a total of 260 patients, and SRILT occurred in 58 (22.3%) of them. Mean FEV1 values for SRILT and non-SRILT patients were 71.7% and 65.9% (P=.077). Under univariate analysis, risk of SRILT increased with MLD (P=.008), the absence of COPD (P=.047), and FEV1 (P=.077). Age (65 split) and MLD were significantly associated with SRILT in multivariate analysis. The addition of FEV1 and age with the MLD-based model slightly improved the predictability of SRILT (area under curve from 0.63-0.70, P=.088). Conclusions: Poor baseline PF does not increase the risk of SRILT, and combining FEV1, age, and MLD may improve the predictive ability.

Wang, Jingbo [Department of Radiation Oncology, University of Michigan/Ann Arbor Veterans Health System, Ann Arbor, Michigan (United States) [Department of Radiation Oncology, University of Michigan/Ann Arbor Veterans Health System, Ann Arbor, Michigan (United States); Department of Radiation Oncology, Cancer Hospital, Chinese Academic Medical Sciences and Peking Union Medical College, Beijing (China); Cao, Jianzhong [Department of Radiation Oncology, Cancer Hospital, Chinese Academic Medical Sciences and Peking Union Medical College, Beijing (China)] [Department of Radiation Oncology, Cancer Hospital, Chinese Academic Medical Sciences and Peking Union Medical College, Beijing (China); Yuan, Shuanghu [Department of Radiation Oncology, University of Michigan/Ann Arbor Veterans Health System, Ann Arbor, Michigan (United States)] [Department of Radiation Oncology, University of Michigan/Ann Arbor Veterans Health System, Ann Arbor, Michigan (United States); Ji, Wei [Department of Radiation Oncology, Cancer Hospital, Chinese Academic Medical Sciences and Peking Union Medical College, Beijing (China)] [Department of Radiation Oncology, Cancer Hospital, Chinese Academic Medical Sciences and Peking Union Medical College, Beijing (China); Arenberg, Douglas [Department of Internal Medicine, University of Michigan/Ann Arbor Veterans Health System, Ann Arbor, Michigan (United States)] [Department of Internal Medicine, University of Michigan/Ann Arbor Veterans Health System, Ann Arbor, Michigan (United States); Dai, Jianrong [Department of Radiation Oncology, Cancer Hospital, Chinese Academic Medical Sciences and Peking Union Medical College, Beijing (China)] [Department of Radiation Oncology, Cancer Hospital, Chinese Academic Medical Sciences and Peking Union Medical College, Beijing (China); Stanton, Paul; Tatro, Daniel; Ten Haken, Randall K. [Department of Radiation Oncology, University of Michigan/Ann Arbor Veterans Health System, Ann Arbor, Michigan (United States)] [Department of Radiation Oncology, University of Michigan/Ann Arbor Veterans Health System, Ann Arbor, Michigan (United States); Wang, Luhua, E-mail: wlhwq@yahoo.com [Department of Radiation Oncology, Cancer Hospital, Chinese Academic Medical Sciences and Peking Union Medical College, Beijing (China)] [Department of Radiation Oncology, Cancer Hospital, Chinese Academic Medical Sciences and Peking Union Medical College, Beijing (China); Kong, Feng-Ming, E-mail: fengkong@med.umich.edu [Department of Radiation Oncology, University of Michigan/Ann Arbor Veterans Health System, Ann Arbor, Michigan (United States)] [Department of Radiation Oncology, University of Michigan/Ann Arbor Veterans Health System, Ann Arbor, Michigan (United States)

2013-03-01T23:59:59.000Z

58

RADIATION-INDUCED DECOMPOSITION OF U(VI) ALTERATION PHASES OF UO2  

SciTech Connect (OSTI)

U{sup 6+}-phases are common alteration products of spent nuclear fuel under oxidizing conditions, and they may potentially incorporate actinides, such as long-lived {sup 239}Pu and {sup 237}Np, delaying their transport to the biosphere. In order to evaluate the ballistic effects of {alpha}-decay events on the stability of the U{sup 6+}-phases, we report, for the first time, the results of ion beam irradiations (1.0 MeV Kr{sup 2+}) for six different structures of U{sup 6+}-phases: uranophane, kasolite, boltwoodite, saleeite, carnotite, and liebigite. The target uranyl-minerals were characterized by powder X-ray diffraction and identification confirmed by SAED (selected area electron diffraction) in TEM (transmission electron microscopy). The TEM observation revealed no initial contamination of uraninite in these U{sup 6+} phases. All of the samples were irradiated with in situ TEM observation using 1.0 MeV Kr{sup 2+} in the IVEM (intermediate-voltage electron microscope) at the IVEM-Tandem Facility of Argonne National Laboratory. The ion flux was 6.3 x 10{sup 11} ions/cm{sup 2}/sec. The specimen temperatures during irradiation were 298 and 673 K, respectively. The Kr{sup 2+}-irradiation decomposed the U{sup 6+}-phases to nanocrystals of UO{sub 2} at doses as low as 0.006 dpa. The cumulative doses for the pure U{sup 6+}-phases, e.g., uranophane, at 0.1 and 1 million years (m.y.) are calculated to be 0.009 and 0.09 dpa using SRIM2003. However, with the incorporation of 1 wt.% {sup 239}Pu, the calculated doses reach 0.27 and {approx}1.00 dpa in ten thousand and one hundred thousand years, respectively. Under oxidizing conditions, multiple cycles of radiation-induced decomposition to UO{sub 2} followed by alteration to U{sup 6+}-phases should be further investigated to determine the fate of trace elements that may have been incorporated in the U{sup 6+}-phases.

S. Utsunomiya; R.C. Ewing

2005-09-08T23:59:59.000Z

59

Adaptive sampler  

DOE Patents [OSTI]

An adaptive data compression device for compressing data having variable frequency content, including a plurality of digital filters for analyzing the content of the data over a plurality of frequency regions, a memory, and a control logic circuit for generating a variable rate memory clock corresponding to the analyzed frequency content of the data in the frequency region and for clocking the data into the memory in response to the variable rate memory clock.

Watson, Bobby L. (Idaho Falls, ID); Aeby, Ian (Fremont, CA)

1982-01-01T23:59:59.000Z

60

Adaptive sampler  

DOE Patents [OSTI]

An adaptive data compression device for compressing data is described. The device has a frequency content, including a plurality of digital filters for analyzing the content of the data over a plurality of frequency regions, a memory, and a control logic circuit for generating a variable rate memory clock corresponding to the analyzed frequency content of the data in the frequency region and for clocking the data into the memory in response to the variable rate memory clock.

Watson, B.L.; Aeby, I.

1980-08-26T23:59:59.000Z

Note: This page contains sample records for the topic "radiation-induced adaptive responses" 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

Detection and Repair of Ionizing Radiation-Induced DNA Double Strand Breaks: New Developments in Nonhomologous End Joining  

SciTech Connect (OSTI)

DNA damage can occur as a result of endogenous metabolic reactions and replication stress or from exogenous sources such as radiation therapy and chemotherapy. DNA double strand breaks are the most cytotoxic form of DNA damage, and defects in their repair can result in genome instability, a hallmark of cancer. The major pathway for the repair of ionizing radiation-induced DSBs in human cells is nonhomologous end joining. Here we review recent advances on the mechanism of nonhomologous end joining, as well as new findings on its component proteins and regulation.

Wang, Chen [Departments of Biochemistry and Molecular Biology and Oncology, and Southern Alberta Cancer Research Institute, University of Calgary, Calgary (Canada)] [Departments of Biochemistry and Molecular Biology and Oncology, and Southern Alberta Cancer Research Institute, University of Calgary, Calgary (Canada); Lees-Miller, Susan P., E-mail: leesmill@ucalgary.ca [Departments of Biochemistry and Molecular Biology and Oncology, and Southern Alberta Cancer Research Institute, University of Calgary, Calgary (Canada)

2013-07-01T23:59:59.000Z

62

Radiation hardening and radiation-induced chromium depletion effects on intergranular stress corrosion cracking of austenitic stainless steels  

SciTech Connect (OSTI)

Available data on neutron-irradiated materials have been analyzed and correlations developed between fluence, yield strength, grain boundary chromium concentration and cracking susceptibility in high-temperature water environments. Large heat-to-heat differences in critical fluence (0.2 to 2.5 n/cm[sup 2]) for IGSCC are documented.In many cases, this variability is consistent with yield strength differences among irradiated materials. IGSCC correlated better to yield strength than to fluence for most heats suggesting a possible role of the radiation-induced hardening (and microstructure) on cracking. However, isolatedheats reveal a wide range of yield strengths from 450 to 800 MPa necessary to promote IGSCC which cannot be understood by strength effects alone. Grain boundary Cr depletion explain differences in IGSCC susceptibility for irradiated stainless steels. Cr contents versus SCC shows that all materials showing IG cracking have some grain boundary depletion ([ge]2%). Grain boundary Cr concentrations for cracking (below [approximately]16 wt %) are in good agreement with similar SCC tests on unirradiated 304 SS with controlled depletion profiles. Heats that prompt variability in the yield strength correlation, are accounted for bydifferences in their interfacial Cr contents. Certain stainless steels are more resistant to cracking even though they have significant radiation-induced Cr depletion. It is proposed that Cr depletion is required for IASCC, but observed susceptibility is modified by other microchemical and microstructural components.

Bruemmer, S.M.; Simonen, E.P.

1993-03-01T23:59:59.000Z

63

Radiation hardening and radiation-induced chromium depletion effects on intergranular stress corrosion cracking of austenitic stainless steels  

SciTech Connect (OSTI)

Available data on neutron-irradiated materials have been analyzed and correlations developed between fluence, yield strength, grain boundary chromium concentration and cracking susceptibility in high-temperature water environments. Large heat-to-heat differences in critical fluence (0.2 to 2.5 n/cm{sup 2}) for IGSCC are documented.In many cases, this variability is consistent with yield strength differences among irradiated materials. IGSCC correlated better to yield strength than to fluence for most heats suggesting a possible role of the radiation-induced hardening (and microstructure) on cracking. However, isolatedheats reveal a wide range of yield strengths from 450 to 800 MPa necessary to promote IGSCC which cannot be understood by strength effects alone. Grain boundary Cr depletion explain differences in IGSCC susceptibility for irradiated stainless steels. Cr contents versus SCC shows that all materials showing IG cracking have some grain boundary depletion ({ge}2%). Grain boundary Cr concentrations for cracking (below {approximately}16 wt %) are in good agreement with similar SCC tests on unirradiated 304 SS with controlled depletion profiles. Heats that prompt variability in the yield strength correlation, are accounted for bydifferences in their interfacial Cr contents. Certain stainless steels are more resistant to cracking even though they have significant radiation-induced Cr depletion. It is proposed that Cr depletion is required for IASCC, but observed susceptibility is modified by other microchemical and microstructural components.

Bruemmer, S.M.; Simonen, E.P.

1993-03-01T23:59:59.000Z

64

Amifostine, a radioprotectant agent, protects rat brain tissue lipids against ionizing radiation induced damage: An FTIR microspectroscopic imaging study  

SciTech Connect (OSTI)

Amifostine is the only approved radioprotective agent by FDA for reducing the damaging effects of radiation on healthy tissues. In this study, the protective effect of amifostine against the damaging effects of ionizing radiation on the white matter (WM) and grey matter (GM) regions of the rat brain were investigated at molecular level. Sprague-Dawley rats, which were administered amifostine or not, were whole-body irradiated at a single dose of 800 cGy, decapitated after 24 h and the brain tissues of these rats were analyzed using Fourier transform infrared microspectroscopy (FTIRM). The results revealed that the total lipid content and CH{sub 2} groups of lipids decreased significantly and the carbonyl esters, olefinic=CH and CH{sub 3} groups of lipids increased significantly in the WM and GM after exposure to ionizing radiation, which could be interpreted as a result of lipid peroxidation. These changes were more prominent in the WM of the brain. The administration of amifostine before ionizing radiation inhibited the radiation-induced lipid peroxidation in the brain. In addition, this study indicated that FTIRM provides a novel approach for monitoring ionizing radiation induced-lipid peroxidation and obtaining different molecular ratio images can be used as biomarkers to detect lipid peroxidation in biological systems.

Cakmak G.; Miller L.; Zorlu, F.; Severcan, F.

2012-03-03T23:59:59.000Z

65

The susceptibility of silicon-ion implanted gate insulators to x-ray radiation-induced defect generation  

SciTech Connect (OSTI)

This paper examines the x-ray susceptibility of silicon-ion implanted gate insulators of insulated gate-field effect transistors (IGFETs). It is found that silicon-ion implanted gate insulators appear to be much more susceptible to x-ray radiation induced defect generation than unimplanted devices. The residual defect density in silicon-implanted devices, following x-ray radiation, and subsequent postmetal annealing for up to 60 min is found to be greater than that in unimplanted devices. The results with silicon ions indicate that if the insulator is damaged by such a species during processing, as might occur due to knock-on from the gate electrode during source/drain formation, unannealable defects will form which would also tend to make the device structure more susceptible to radiation damage in a hostile environment, or to large hot- electron drift in conventional use.

Reisman, A.; Sune, C.T.; Williams, C.K. (MCNC, Research Triangle Park, NC (US))

1991-03-01T23:59:59.000Z

66

A physical model of the photo- and radiation-induced degradation of ytterbium-doped silica optical fibres  

SciTech Connect (OSTI)

We propose a model to describe the photo- or/and the radiation-induced darkening of ytterbium-doped silica optical fibers. This model accounts for the well-established experimental features of photo-darkening. Degradation behaviors predicted for fibers pumped in harsh environments are also fully confirmed by experimental data reported in the work by Duchez et al. (this proceeding), which gives a detailed characterization of the interplay between the effects of the pump and those of a superimposed ionizing irradiation (actual operation conditions in space-based applications for instance). In particular, dependences of the darkening build-up on the pump power, the total ionizing dose and the dose rate are all correctly reproduced. The presented model is a sufficient one, including the minimal physical ingredients required to reproduce experimental features. Refinements could be proposed to improve, e.g., quantitative kinetics.

Mady, Franck, E-mail: franck.mady@unice.fr; Duchez, Jean-Bernard, E-mail: franck.mady@unice.fr; Mebrouk, Yasmine, E-mail: franck.mady@unice.fr; Benabdesselam, Mourad, E-mail: franck.mady@unice.fr [University of Nice Sophia Antipolis, Laboratoire de Physique de la Matire Condense (LPMC), CNRS UMR 7336, Parc Valrose, 06108 Nice cedex 2 (France)

2014-10-21T23:59:59.000Z

67

Reproductive Status at First Diagnosis Influences Risk of Radiation-Induced Second Primary Contralateral Breast Cancer in the WECARE Study  

SciTech Connect (OSTI)

Purpose: Our study examined whether reproductive and hormonal factors before, at the time of, or after radiation treatment for a first primary breast cancer modify the risk of radiation-induced second primary breast cancer. Methods and Materials: The Women's Environmental, Cancer and Radiation Epidemiology (WECARE) Study is a multicenter, population-based study of 708 women (cases) with asynchronous contralateral breast cancer (CBC) and 1399 women (controls) with unilateral breast cancer. Radiotherapy (RT) records, coupled with anthropomorphic phantom simulations, were used to estimate quadrant-specific radiation dose to the contralateral breast for each patient. Rate ratios (RR) and 95% confidence intervals (CI) were computed to assess the relationship between reproductive factors and risk of CBC. Results: Women who were nulliparous at diagnosis and exposed to {>=}1 Gy to the contralateral breast had a greater risk for CBC than did matched unexposed nulliparous women (RR = 2.2; 95% CI, 1.2-4.0). No increased risk was seen in RT-exposed parous women (RR = 1.1; 95% CI, 0.8-1.4). Women treated with RT who later became pregnant (8 cases and 9 controls) had a greater risk for CBC (RR = 6.0; 95% CI, 1.3-28.4) than unexposed women (4 cases and 7 controls) who also became pregnant. The association of radiation with risk of CBC did not vary by number of pregnancies, history of breastfeeding, or menopausal status at the time of first breast cancer diagnosis. Conclusion: Nulliparous women treated with RT were at an increased risk for CBC. Although based on small numbers, women who become pregnant after first diagnosis also seem to be at an increased risk for radiation-induced CBC.

Brooks, Jennifer D., E-mail: brooksj@mskcc.org [Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Boice, John D. [International Epidemiology Institute, Rockville, MD and Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt School of Medicine, Nashville, TN (United States)] [International Epidemiology Institute, Rockville, MD and Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt School of Medicine, Nashville, TN (United States); Stovall, Marilyn [Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, TX (United States)] [Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, TX (United States); Reiner, Anne S. [Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, NY (United States)] [Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Bernstein, Leslie [Division of Cancer Etiology, Department of Population Sciences, Beckman Research Institute and City of Hope Comprehensive Cancer Center, Duarte, CA (United States)] [Division of Cancer Etiology, Department of Population Sciences, Beckman Research Institute and City of Hope Comprehensive Cancer Center, Duarte, CA (United States); John, Esther M. [Cancer Prevention Institute of California, Fremont, CA, and Stanford University School of Medicine and Stanford Cancer Institute, Stanford, CA (United States)] [Cancer Prevention Institute of California, Fremont, CA, and Stanford University School of Medicine and Stanford Cancer Institute, Stanford, CA (United States); Lynch, Charles F. [Department of Epidemiology, University of Iowa, Iowa City, IA (United States)] [Department of Epidemiology, University of Iowa, Iowa City, IA (United States); Mellemkjaer, Lene [Institute of Cancer Epidemiology, Danish Cancer Society, Copenhagen (Denmark)] [Institute of Cancer Epidemiology, Danish Cancer Society, Copenhagen (Denmark); Knight, Julia A. [Dalla Lana School of Public Health, University of Toronto and Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, Ontario (Canada)] [Dalla Lana School of Public Health, University of Toronto and Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, Ontario (Canada); Thomas, Duncan C.; Haile, Robert W. [Department of Preventive Medicine, University of Southern California, Los Angeles, CA (United States)] [Department of Preventive Medicine, University of Southern California, Los Angeles, CA (United States); Smith, Susan A. [Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, TX (United States)] [Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, TX (United States); Capanu, Marinela; Bernstein, Jonine L. [Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, NY (United States)] [Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Shore, Roy E. [Department of Environmental Medicine, New York University, New York, NY (United States) [Department of Environmental Medicine, New York University, New York, NY (United States); Radiation Effects Research Foundation, Hiroshima (Japan)

2012-11-15T23:59:59.000Z

68

Evaluation of Reaction Rate Theory and Monte Carlo Methods for Application to Radiation-Induced Microstructural Characterization  

SciTech Connect (OSTI)

The multiscale modeling scheme encompasses models from the atomistic to the continuum scale. Phenomena at the mesoscale are typically simulated using reaction rate theory, Monte Carlo, or phase field models. These mesoscale models are appropriate for application to problems that involve intermediate length scales, and timescales from those characteristic of diffusion to long-term microstructural evolution (~?s to years). Although the rate theory and Monte Carlo models can be used simulate the same phenomena, some of the details are handled quite differently in the two approaches. Models employing the rate theory have been extensively used to describe radiation-induced phenomena such as void swelling and irradiation creep. The primary approximations in such models are time- and spatial averaging of the radiation damage source term, and spatial averaging of the microstructure into an effective medium. Kinetic Monte Carlo models can account for these spatial and temporal correlations; their primary limitation is the computational burden which is related to the size of the simulation cell. A direct comparison of RT and object kinetic MC simulations has been made in the domain of point defect cluster dynamics modeling, which is relevant to the evolution (both nucleation and growth) of radiation-induced defect structures. The primary limitations of the OKMC model are related to computational issues. Even with modern computers, the maximum simulation cell size and the maximum dose (typically much less than 1 dpa) that can be simulated are limited. In contrast, even very detailed RT models can simulate microstructural evolution for doses up 100 dpa or greater in clock times that are relatively short. Within the context of the effective medium, essentially any defect density can be simulated. Overall, the agreement between the two methods is best for irradiation conditions which produce a high density of defects (lower temperature and higher displacement rate), and for materials that have a relatively high density of fixed sinks such as dislocations.

Stoller, Roger E [ORNL; Golubov, Stanislav I [ORNL; Becquart, C. S. [Universite de Lille; Domain, C. [EDF R& D, Clamart, France

2007-08-01T23:59:59.000Z

69

Effects of exogenous carbon monoxide on radiation-induced bystander effect in zebrafish embryos in vivo  

E-Print Network [OSTI]

that the dose-response of radiation in the low-dose regime deviated from the LNT model. A notable example radiation are linearly proportional to the absorbed dose, evidence accumulated in the past decades showed as a pharmaceutical agent to release a low dose of exogenous carbon monoxide (CO) to attenuate the effect on bystander

Yu, K.N.

70

Radiation-Induced Micro-RNA Expression Changes in Peripheral Blood Cells of Radiotherapy Patients  

SciTech Connect (OSTI)

Purpose: MicroRNAs (miRNAs), a class of noncoding small RNAs that regulate gene expression, are involved in numerous physiologic processes in normal and malignant cells. Our in vivo study measured miRNA and gene expression changes in human blood cells in response to ionizing radiation, to develop miRNA signatures that can be used as biomarkers for radiation exposure. Methods and Materials: Blood from 8 radiotherapy patients in complete remission 1 or 2 was collected immediately before and 4 hours after total body irradiation with 1.25 Gy x-rays. Both miRNA and gene expression changes were measured by means of quantitative polymerase chain reaction and microarray hybridization, respectively. Hierarchic clustering, multidimensional scaling, class prediction, and gene ontology analysis were performed to investigate the potential of miRNAs to serve as radiation biomarkers and to elucidate their likely physiologic roles in the radiation response. Results: The expression levels of 45 miRNAs were statistically significantly upregulated 4 hours after irradiation with 1.25 Gy x-rays, 27 of them in every patient. Nonirradiated and irradiated samples form separate clusters in hierarchic clustering and multidimensional scaling. Out of 223 differentially expressed genes, 37 were both downregulated and predicted targets of the upregulated miRNAs. Paired and unpaired miRNA-based classifiers that we developed can predict the class membership of a sample with unknown irradiation status, with accuracies of 100% when all 45 upregulated miRNAs are included. Both miRNA control of and gene involvement in biologic processes such as hemopoiesis and the immune response are increased after irradiation, whereas metabolic processes are underrepresented among all differentially expressed genes and the genes controlled by miRNAs. Conclusions: Exposure to ionizing radiation leads to the upregulation of the expression of a considerable proportion of the human miRNAome of peripheral blood cells. These miRNA expression signatures can be used as biomarkers of radiation exposure.

Templin, Thomas; Paul, Sunirmal; Amundson, Sally A.; Young, Erik F. [Center for Radiological Research, Department of Radiation Oncology, Columbia University Medical Center, New York, NY (United States); Barker, Christopher A.; Wolden, Suzanne L. [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Smilenov, Lubomir B., E-mail: lbs5@columbia.ed [Center for Radiological Research, Department of Radiation Oncology, Columbia University Medical Center, New York, NY (United States)

2011-06-01T23:59:59.000Z

71

Adapting the U.S. Domestic Radiological Emergency Response Process to an Overseas Incident: FRMAC Without the F  

SciTech Connect (OSTI)

The earthquake and resulting tsunami in Japan led to a radiological release from the Fukushima Daiichi Nuclear Power Plan, which in turn resulted in the rapid activation and deployment by the U.S. Department of Energy National Nuclear Security Administration (DOE/NNSA) emergency response teams. These teams and those from other federal agencies are typically coordinated through the Federal Radiological Monitoring and Assessment Center (FRMAC) when responding to radiological incidents in the U.S. FRMAC is the body through which the collection, analysis, and assessment of environmental radiological data are coordinated and products released to decision makers. This article discusses DOE/NNSAs role in the U.S. response to the Fukushima accident as it implemented its components of FRMAC in a foreign country, coordinated its assets, integrated with its federal partners, and collaborated with the Government of Japan. The technical details of the various data collections and analyses are covered in other articles of this issue.

Blumenthal, Daniel J. [USDOE NA Office of Emergency Response; Bowman, David R. [USDOE NA Office of Emergency Response; Remick, Alan [USDOE NA Office of Emergency Response

2012-05-01T23:59:59.000Z

72

Radiation-induced gain degradation in lateral PNP BJTs with lightly and heavily doped emitters  

SciTech Connect (OSTI)

Ionizing radiation may cause failures in ICs due to gain degradation of individual devices. The base current of irradiated bipolar devices increases with total dose, while the collector current remains relatively constant. This results in a decrease in the current gain. Lateral PNP (LPNP) transistors typically exhibit more degradation than vertical PNP devices at the same total dose, and have been blamed as the cause of early IC failures at low dose rates. It is important to understand the differences in total-dose response between devices with heavily- and lightly-doped emitters in order to compare different technologies and evaluate the applicability of proposed low-dose-rate hardness-assurance methods. This paper addresses these differences by comparing two different LPNP devices from the same process: one with a heavily-doped emitter and one with a lightly-doped emitter. Experimental results demonstrate that the lightly-doped devices are more sensitive to ionizing radiation and simulations illustrate that increased recombination on the emitter side of the junction is responsible for the higher sensitivity.

Wu, A. [Univ. of Arizona, Tucson, AZ (United States); Schrimpf, R.D. [Vanderbilt Univ., Nashville, TN (United States); Pease, R.L. [RLP Research, Inc., Albuquerque, NM (United States); Fleetwood, D.M. [Sandia National Labs., Albuquerque, NM (United States); Kosier, S.L. [VTC Inc., Bloomington, MN (United States)

1997-06-01T23:59:59.000Z

73

Radiation-induced risk of resettling Bikini atoll. Final report, November 7, 1981-May 28, 1982  

SciTech Connect (OSTI)

The Department of Energy (DOE) has concluded that the Bikini atoll is unsafe for resettlement. In response to the Bikinians' request for an independent review, we have examined the following DOE findings: (a) radionuclide contamination of Eneu and Bikini Islands, (b) radiation dosage to those who might resettle the islands, and (c) risks to the health of such settlers. We are in practical agreement with the DOE estimates. Resettlement of either island in 1983 would lead to a range of annual or 30-year cumulative doses that exceed the Federal Radiation Council (FRC) guides for the general population, but not those for occupation exposure. By 2013 resettlement of Eneu probably would be permissible. The principal source of radiation dose is local food, especially coconut, owing to contamination of the soil by cesium-137. A precise estimate of dose is impossible. The availability of imported foods would lessen local food consumption, but not sufficiently to meet the FRC guides for the general population. The 30-year cumulative index dose is 61 (25-122) rem for Bikini, and about 8 (3-16) rem for Eneu.

Kohn, H.I.; Dreyer, N.A.

1982-01-01T23:59:59.000Z

74

Molecular analysis of radiation-induced albino (c)-locus mutations that cause death at preimplantation stages of development  

SciTech Connect (OSTI)

Deletion mutations at the albino (c) locus have been useful for continuing the development of fine-structure physical and functional maps of the Fes-Hbb region of mouse chromosome 7. This report describes the molecular analysis of a number of radiation-induced c deletions that, when homozygous, cause death of the embryo during preimplantation stages. The distal extent of these deletions defines a locus, pid, (preimplantation development) genetically associated with this phenotype. The proximal breakpoints of eight of these deletions were mapped with respect to the Tyr (tyrosinase; albino) gene as well as to anonymous loci within the Fah-Tyr region that are defined by the Pmv-31 viral integration site and by chromosome-microdissection clones. Rearrangements corresponding to the proximal breakpoints of two of these deletions were detected by Southern blot analysis, and a size-altered restriction fragment carrying the breakpoint of one of them was cloned. A probe derived from this deletion fusion fragment defines a locus, D7Rn6, which maps within (or distal to) the pid region, and which discriminates among the distal extents of deletions eliciting the pid phenotype. Extension of physical maps from D7Rn6 should provide access both to the pid region and to loci mapping distal to pid that are defined by N-ethyl-N-nitrosourea-induced lethal mutations. 36 refs., 10 figs.

Rinchik, E.M. (Oak Ridge National Lab., TN (United States)); Toenjes, R.R.; Paul, D. (Fraunhofer-Instituet fuer Toxikologie und Aerosolforschung, Hannover (Germany)); Potter, M.D. (Univ. of Tenn.-Oak Ridge Graduate School of Biomedical Sciences, Oak Ridge, TN (United States))

1993-12-01T23:59:59.000Z

75

ABSTRACT : The direct analysis of the dynamic response of materials is possible using Split Hopkinson pressure bar method. For soils, it has to be adapted since the specimen has generally poor  

E-Print Network [OSTI]

Hopkinson pressure bar method. For soils, it has to be adapted since the specimen has generally poor mechanical properties. An original experimental arrangement called "Three-Dimensional Split Hopkinson response of soils. Different types of confinement systems are used. The results on different loading paths

Paris-Sud XI, Université de

76

Effects of Adenovirus-Mediated Delivery of the Human Hepatocyte Growth Factor Gene in Experimental Radiation-Induced Heart Disease  

SciTech Connect (OSTI)

Purpose: Irradiation to the heart may lead to late cardiovascular complications. The purpose of this study was to investigate whether adenovirus-mediated delivery of the human hepatocyte growth factor gene could reduce post-irradiation damage of the rat heart and improve heart function. Methods and Materials: Twenty rats received single-dose irradiation of 20 Gy gamma ray locally to the heart and were randomized into two groups. Two weeks after irradiation, these two groups of rats received Ad-HGF or mock adenovirus vector intramyocardial injection, respectively. Another 10 rats served as sham-irradiated controls. At post-irradiation Day 120, myocardial perfusion was tested by myocardial contrast echocardiography with contrast agent injected intravenously. At post-irradiation Day 180, cardiac function was assessed using the Langendorff technique with an isolated working heart model, after which heart samples were collected for histological evaluation. Results: Myocardial blood flow was significantly improved in HGF-treated animals as measured by myocardial contrast echocardiography at post-irradiation Day 120 . At post-irradiation Day 180, cardiac function was significantly improved in the HGF group compared with mock vector group, as measured by left ventricular peak systolic pressure (58.80 +- 9.01 vs. 41.94 +- 6.65 mm Hg, p < 0.05), the maximum dP/dt (5634 +- 1303 vs. 1667 +- 304 mm Hg/s, p < 0.01), and the minimum dP/dt (3477 +- 1084 vs. 1566 +- 499 mm Hg/s, p < 0.05). Picrosirius red staining analysis also revealed a significant reduction of fibrosis in the HGF group. Conclusion: Based on the study findings, hepatocyte growth factor gene transfer can attenuate radiation-induced cardiac injury and can preserve cardiac function.

Hu Shunying; Chen Yundai [Department of Cardiology, Chinese PLA General Hospital, Beijing (China); Li Libing [Department of Cardiovascular Surgery, Chinese PLA General Hospital, Beijing (China); Chen Jinlong; Wu Bin [Department of Experimental Hematology, Beijing Institute of Radiation Medicine, Beijing (China); Zhou, Xiao; Zhi Guang [Department of Cardiology, Chinese PLA General Hospital, Beijing (China); Li Qingfang; Wang Rongliang; Duan Haifeng; Guo Zikuan; Yang Yuefeng; Xiao Fengjun [Department of Experimental Hematology, Beijing Institute of Radiation Medicine, Beijing (China); Wang Hua, E-mail: wanghua@nic.bmi.ac.c [Department of Experimental Hematology, Beijing Institute of Radiation Medicine, Beijing (China); Wang Lisheng [Department of Experimental Hematology, Beijing Institute of Radiation Medicine, Beijing (China)

2009-12-01T23:59:59.000Z

77

Low Dose Radiation-Induced Genome and Epigenome Instability Symposium and Epigenetic Mechanisms, DNA Repair, and Chromatin Symposium at the EMS 2008 Annual Meeting - October 2008  

SciTech Connect (OSTI)

The Low Dose Radiation Symposium thoughtfully addressed ionizing radiation non-mutational but transmissable alterations in surviving cells. Deregulation of epigenetic processes has been strongly implicated in carcinogenesis, and there is increasing realization that a significant fraction of non-targeted and adaptive mechanisms in response to ionizing radiation are likely to be epigenetic in nature. Much remains to be learned about how chromatin and epigenetic regulators affect responses to low doses of radiation, and how low dose radiation impacts other epigenetic processes. The Epigenetic Mechanisms Symposium focused on on epigenetic mechanisms and their interplay with DNA repair and chromatin changes. Addressing the fact that the most well understood mediators of epigenetic regulation are histone modifications and DNA methylation. Low levels of radiation can lead to changes in the methylation status of certain gene promoters and the expression of DNA methyltransferases, However, epigenetic regulation can also involve changes in higher order chromosome structure.

Morgan, William F.; Kovalchuk, Olga; Dolinoy, Dana C.; Dubrova, Yuri E.; Coleman, Matthew A.; Schr, Primo; Pogribny, Igor; Hendzel, Michael

2010-02-19T23:59:59.000Z

78

COMMENTARY:Limits to adaptation  

SciTech Connect (OSTI)

An actor-centered, risk-based approach to defining limits to social adaptation provides a useful analytic framing for identifying and anticipating these limits and informing debates over society s responses to climate change.

Preston, Benjamin L [ORNL

2013-01-01T23:59:59.000Z

79

Adaptive method with intercessory feedback control for an intelligent agent  

DOE Patents [OSTI]

An adaptive architecture method with feedback control for an intelligent agent provides for adaptively integrating reflexive and deliberative responses to a stimulus according to a goal. An adaptive architecture method with feedback control for multiple intelligent agents provides for coordinating and adaptively integrating reflexive and deliberative responses to a stimulus according to a goal. Re-programming of the adaptive architecture is through a nexus which coordinates reflexive and deliberator components.

Goldsmith, Steven Y.

2004-06-22T23:59:59.000Z

80

Adaptation Plan  

E-Print Network [OSTI]

Environment ? Natural Environment ? People FIVE STRATEGIES Copyright 2011, City of Chicago ADAPTATION ESL-KT-11-11-16 9 CCAP Adaptation Evolution 2007 2008 2009 2010 ? Understood the climate science: Assess climate impacts ? Assessed economic... E xi st in g Tr un k Existing on Rogers Rogers Ave CIP Stormwater management: Chicago?s comprehensive sewer model Climate impacts Example actions to prepare the built environment Copyright 2011, City of Chicago ESL-KT-11-11-16 13 CCAP...

Durnbaugh, A.

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "radiation-induced adaptive responses" 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

Adaptive constructive processes 1 Running head: Adaptive constructive processes  

E-Print Network [OSTI]

to a current environmental demand when automatic, learned responses are not elicited. Bartlett argued further of Psychology Harvard University Cambridge, Massachusetts 02138 phone: (617) 495-3856 fax: (617) 496-3122 e to be operating in any well-adapted organic response (1932, p. 201)". He further emphasized the importance of "the

Schacter, Daniel

82

Adaptive sequential controller  

DOE Patents [OSTI]

An adaptive sequential controller (50/50') for controlling a circuit breaker (52) or other switching device to substantially eliminate transients on a distribution line caused by closing and opening the circuit breaker. The device adaptively compensates for changes in the response time of the circuit breaker due to aging and environmental effects. A potential transformer (70) provides a reference signal corresponding to the zero crossing of the voltage waveform, and a phase shift comparator circuit (96) compares the reference signal to the time at which any transient was produced when the circuit breaker closed, producing a signal indicative of the adaptive adjustment that should be made. Similarly, in controlling the opening of the circuit breaker, a current transformer (88) provides a reference signal that is compared against the time at which any transient is detected when the circuit breaker last opened. An adaptive adjustment circuit (102) produces a compensation time that is appropriately modified to account for changes in the circuit breaker response, including the effect of ambient conditions and aging. When next opened or closed, the circuit breaker is activated at an appropriately compensated time, so that it closes when the voltage crosses zero and opens when the current crosses zero, minimizing any transients on the distribution line. Phase angle can be used to control the opening of the circuit breaker relative to the reference signal provided by the potential transformer.

El-Sharkawi, Mohamed A. (Renton, WA); Xing, Jian (Seattle, WA); Butler, Nicholas G. (Newberg, OR); Rodriguez, Alonso (Pasadena, CA)

1994-01-01T23:59:59.000Z

83

Radiation-induced instability of MnS precipitates and its possible consequences on irradiation-induced stress corrosion cracking of austenitic stainless steels  

SciTech Connect (OSTI)

Irradiation-assisted stress corrosion cracking (IASCC) is a significant materials issue for the light water reactor (LWR) industry and may also pose a problem for fusion power reactors that will use water as coolant. A new metallurgical process is proposed that involves the radiation-induced release into solution of minor impurity elements not usually thought to participate in IASCC. MnS-type precipitates, which contain most of the sulfur in stainless steels, are thought to be unstable under irradiation. First, Mn transmutes strongly to Fe in thermalized neutron spectra. Second, cascade-induced disordering and the inverse Kirkendall effect operating at the incoherent interfaces of MnS precipitates are thought to act as a pump to export Mn from the precipitate into the alloy matrix. Both of these processes will most likely allow sulfur, which is known to exert a deleterious influence on intergranular cracking, to re-enter the matrix. To test this hypothesis, compositions of MnS-type precipitates contained in several unirradiated and irradiated heats of Type 304, 316, and 348 stainless steels (SSs) were analyzed by Auger electron spectroscopy. Evidence is presented that shows a progressive compositional modification of MnS precipitates as exposure to neutrons increases in boiling water reactors. As the fluence increases, the Mn level in MnS decreases, whereas the Fe level increases. The S level also decreases relative to the combined level of Mn and Fe. MnS precipitates were also found to be a reservoir of other deleterious impurities such as F and O which could be also released due to radiation-induced instability of the precipitates.

Chung, H.M.; Sanecki, J.E. [Argonne National Lab., IL (United States); Garner, F.A. [Pacific Northwest National Lab., Richland, WA (United States)

1996-12-01T23:59:59.000Z

84

Combining Physical and Biologic Parameters to Predict Radiation-Induced Lung Toxicity in Patients With Non-Small-Cell Lung Cancer Treated With Definitive Radiation Therapy  

SciTech Connect (OSTI)

Purpose: To investigate the plasma dynamics of 5 proinflammatory/fibrogenic cytokines, including interleukin-1beta (IL-1{beta}), IL-6, IL-8, tumor necrosis factor alpha (TNF-{alpha}), and transforming growth factor beta1 (TGF-{beta}1) to ascertain their value in predicting radiation-induced lung toxicity (RILT), both individually and in combination with physical dosimetric parameters. Methods and Materials: Treatments of patients receiving definitive conventionally fractionated radiation therapy (RT) on clinical trial for inoperable stages I-III lung cancer were prospectively evaluated. Circulating cytokine levels were measured prior to and at weeks 2 and 4 during RT. The primary endpoint was symptomatic RILT, defined as grade 2 and higher radiation pneumonitis or symptomatic pulmonary fibrosis. Minimum follow-up was 18 months. Results: Of 58 eligible patients, 10 (17.2%) patients developed RILT. Lower pretreatment IL-8 levels were significantly correlated with development of RILT, while radiation-induced elevations of TGF-ss1 were weakly correlated with RILT. Significant correlations were not found for any of the remaining 3 cytokines or for any clinical or dosimetric parameters. Using receiver operator characteristic curves for predictive risk assessment modeling, we found both individual cytokines and dosimetric parameters were poor independent predictors of RILT. However, combining IL-8, TGF-ss1, and mean lung dose into a single model yielded an improved predictive ability (P<.001) compared to either variable alone. Conclusions: Combining inflammatory cytokines with physical dosimetric factors may provide a more accurate model for RILT prediction. Future study with a larger number of cases and events is needed to validate such findings.

Stenmark, Matthew H. [Department of Radiation Oncology, University of Michigan Medical Center, Ann Arbor, Michigan (United States)] [Department of Radiation Oncology, University of Michigan Medical Center, Ann Arbor, Michigan (United States); Cai Xuwei [Department of Radiation Oncology, University of Michigan Medical Center, Ann Arbor, Michigan (United States) [Department of Radiation Oncology, University of Michigan Medical Center, Ann Arbor, Michigan (United States); Radiation Oncology, Shanghai Cancer Hospital, Fudan University, Shanghai (China); Shedden, Kerby [Department of Biostatistics, University of Michigan Medical Center, Ann Arbor, Michigan (United States)] [Department of Biostatistics, University of Michigan Medical Center, Ann Arbor, Michigan (United States); Hayman, James A. [Department of Radiation Oncology, University of Michigan Medical Center, Ann Arbor, Michigan (United States)] [Department of Radiation Oncology, University of Michigan Medical Center, Ann Arbor, Michigan (United States); Yuan Shuanghu [Department of Radiation Oncology, University of Michigan Medical Center, Ann Arbor, Michigan (United States) [Department of Radiation Oncology, University of Michigan Medical Center, Ann Arbor, Michigan (United States); Radiation Oncology, Shangdong Cancer Hospital, Jinan (China); Ritter, Timothy [Veterans Affairs Medical Center, Ann Arbor, Michigan (United States)] [Veterans Affairs Medical Center, Ann Arbor, Michigan (United States); Ten Haken, Randall K.; Lawrence, Theodore S. [Department of Radiation Oncology, University of Michigan Medical Center, Ann Arbor, Michigan (United States)] [Department of Radiation Oncology, University of Michigan Medical Center, Ann Arbor, Michigan (United States); Kong Fengming, E-mail: fengkong@med.umich.edu [Department of Radiation Oncology, University of Michigan Medical Center, Ann Arbor, Michigan (United States); Veterans Affairs Medical Center, Ann Arbor, Michigan (United States)

2012-10-01T23:59:59.000Z

85

Adaptive Lighting  

Energy Savers [EERE]

* ...based on environmental conditions... - Occupancy Vacancy - Daylight Availability - Demand Response Signals - ... * ...to optimize space & building performance - Maximize...

86

7th International Workshop on Microbeam Probes of Cellular Radiation Response  

SciTech Connect (OSTI)

The extended abstracts that follow present a summary of the Proceedings of the 7th International Workshop: Microbeam Probes of Cellular Radiation Response, held at Columbia Universitys Kellogg Center in New York City on March 1517, 2006. These International Workshops on Microbeam Probes of Cellular Radiation Response have been held regularly since 1993 (15). Since the first workshop, there has been a rapid growth (see Fig. 1) in the number of centers developing microbeams for radiobiological research, and worldwide there are currently about 30 microbeams in operation or under development. Single-cell/single-particle microbeam systems can deliver beams of different ionizing radiations with a spatial resolution of a few micrometers down to a few tenths of a micrometer. Microbeams can be used to addressquestions relating to the effects of low doses of radiation (a single radiation track traversing a cell or group of cells), to probe subcellular targets (e.g. nucleus or cytoplasm), and to address questions regarding the propagation of information about DNA damage (for example, the radiation-induced bystander effect). Much of the recent research using microbeams has been to study low-dose effects and non-targeted responses such as bystander effects, genomic instability and adaptive responses. This Workshop provided a forum to assess the current state of microbeam technology and current biological applications and to discuss future directions for development, both technological and biological. Over 100 participants reviewed the current state of microbeam research worldwide and reported on new technological developments in the fields of both physics and biology.

Brenner, David J.

2009-07-21T23:59:59.000Z

87

Urban climate resilience : a global assessment of city adaptation plans  

E-Print Network [OSTI]

As policy makers accept climate change as an irrefutable threat, adaptation planning has emerged as a necessary action for countries, states, and municipalities. This thesis explores adaptive responses to climate change ...

Katich, Kristina Noel

2009-01-01T23:59:59.000Z

88

REGULATORY MECHANISMS OF SLC39A4 (ZIP4) AND SLC39A5 (ZIP5) IN THE ADAPTIVE RESPONSE TO ZINC AVAILABILITY  

E-Print Network [OSTI]

The aims of this research were to determine how Zip4 and Zip5 are regulated in response to zinc availability and how Zip4 impacts development. Loss of Zip4 resulted in embryonic lethality. Heterozygosity negatively affected eye, heart, and brain...

Weaver, Benjamin Patrick

2009-04-06T23:59:59.000Z

89

Self-Adaptive Management of The Sleep Depths of Idle Nodes in Large Scale Systems to Balance Between Energy Consumption and Response Times  

E-Print Network [OSTI]

Between Energy Consumption and Response Times Yongpeng Liu(1) , Hong Zhu(2) , Kai Lu(1) , Xiaoping Wang(1.659 MW, which equals the power usage of a middle scale city. In 2006, US servers and data centers U.S. electricity consumption or the output of about 15 typical power plants [2]. In 2007

Zhu, Hong

90

Adaptive Sampling in Hierarchical Simulation  

SciTech Connect (OSTI)

We propose an adaptive sampling methodology for hierarchical multi-scale simulation. The method utilizes a moving kriging interpolation to significantly reduce the number of evaluations of finer-scale response functions to provide essential constitutive information to a coarser-scale simulation model. The underlying interpolation scheme is unstructured and adaptive to handle the transient nature of a simulation. To handle the dynamic construction and searching of a potentially large set of finer-scale response data, we employ a dynamic metric tree database. We study the performance of our adaptive sampling methodology for a two-level multi-scale model involving a coarse-scale finite element simulation and a finer-scale crystal plasticity based constitutive law.

Knap, J; Barton, N R; Hornung, R D; Arsenlis, A; Becker, R; Jefferson, D R

2007-07-09T23:59:59.000Z

91

Skeletal adaptation to reduced mechanical loading  

E-Print Network [OSTI]

Bone adapts its mass and architecture in response to its mechanical environment. Yet control of this process by mechanical cues is poorly understood, particularly for unloading. Defining the fundamental mechanoregulation ...

Eliman, Rachel

2014-01-01T23:59:59.000Z

92

Synthesis and Application of an Environmentally Insensitive Cy3-Based Arsenical Fluorescent Probe to Identify Adaptive Microbial Responses Involving Proximal Dithiol Oxidation  

SciTech Connect (OSTI)

Reversible disulfide oxidation between proximal cysteines in proteins represents a common regulatory control mechanism to modulate flux through metabolic pathways in response to changing environmental conditions. To enable in vivo measurements of cellular redox changes linked to disulfide bond formation, we have synthesized a cell-permeable monosubstituted cyanine dye derivatized with arsenic (i.e., TRAP_Cy3) to trap and visualize dithiols in cytosolic proteins. Alkylation of reactive thiols prior to displacement of the bound TRAP-Cy3 by ethanedithiol permits facile protein capture and mass spectrometric identification of proximal reduced dithiols to the exclusion of individual cysteines. Applying TRAP_Cy3 to evaluate cellular responses to increases in oxygen and light levels in the photosynthetic microbe Synechococcus sp. PCC 7002, we observe large decreases in the abundance of reduced dithiols in cellular proteins, which suggest redox-dependent mechanisms involving the oxidation of proximal disulfides. Under these same growth conditions that result in the oxidation of proximal thiols, there is a reduction in the abundance of post-translational oxidative modifications involving nitrotyrosine and methionine sulfoxide formation. These results suggest that the redox status of proximal cysteines respond to environmental conditions, acting to regulate metabolic flux and minimize the formation of reactive oxygen species to decrease oxidative protein damage.

Fu, Na; Su, Dian; Cort, John R.; Chen, Baowei; Xiong, Yijia; Qian, Weijun; Konopka, Allan; Bigelow, Diana J.; Squier, Thomas C.

2013-03-06T23:59:59.000Z

93

SNP in TXNRD2 Associated With Radiation-Induced Fibrosis: A Study of Genetic Variation in Reactive Oxygen Species Metabolism and Signaling  

SciTech Connect (OSTI)

Purpose: The aim of the study was to identify noninvasive markers of treatment-induced side effects. Reactive oxygen species (ROS) are generated after irradiation, and genetic variation in genes related to ROS metabolism might influence the level of radiation-induced adverse effects (AEs). Methods and Materials: 92 breast cancer (BC) survivors previously treated with hypofractionated radiation therapy were assessed for the AEs subcutaneous atrophy and fibrosis, costal fractures, lung fibrosis, pleural thickening, and telangiectasias (median follow-up time 17.1 years). Single-nucleotide polymorphisms (SNPs) in 203 genes were analyzed for association to AE grade. SNPs associated with subcutaneous fibrosis were validated in an independent BC survivor material (n=283). The influence of the studied genetic variation on messenger ribonucleic acid (mRNA) expression level of 18 genes previously associated with fibrosis was assessed in fibroblast cell lines from BC patients. Results: Subcutaneous fibrosis and atrophy had the highest correlation (r=0.76) of all assessed AEs. The nonsynonymous SNP rs1139793 in TXNRD2 was associated with grade of subcutaneous fibrosis, the reference T-allele being more prevalent in the group experiencing severe levels of fibrosis. This was confirmed in another sample cohort of 283 BC survivors, and rs1139793 was found significantly associated with mRNA expression level of TXNRD2 in blood. Genetic variation in 24 ROS-related genes, including EGFR, CENPE, APEX1, and GSTP1, was associated with mRNA expression of 14 genes previously linked to fibrosis (P?.005). Conclusion: Development of subcutaneous fibrosis can be associated with genetic variation in the mitochondrial enzyme TXNRD2, critically involved in removal of ROS, and maintenance of the intracellular redox balance.

Edvardsen, Hege, E-mail: hege.edvardsen@rr-research.no [Department of Genetics, Institute for Cancer Research, OUS Radiumhospitalet, Oslo (Norway) [Department of Genetics, Institute for Cancer Research, OUS Radiumhospitalet, Oslo (Norway); K. G. Jebsen Breast cancer centre, Institute for Clinical Medicine, University of Oslo, Oslo (Norway); Landmark-Hyvik, Hege [Department of Genetics, Institute for Cancer Research, OUS Radiumhospitalet, Oslo (Norway) [Department of Genetics, Institute for Cancer Research, OUS Radiumhospitalet, Oslo (Norway); K. G. Jebsen Breast cancer centre, Institute for Clinical Medicine, University of Oslo, Oslo (Norway); Reinertsen, Kristin V. [National Resource Centre for Late Effects after Cancer Treatment, OUS Radiumhospitalet, Oslo (Norway)] [National Resource Centre for Late Effects after Cancer Treatment, OUS Radiumhospitalet, Oslo (Norway); Zhao, Xi [Department of Genetics, Institute for Cancer Research, OUS Radiumhospitalet, Oslo (Norway) [Department of Genetics, Institute for Cancer Research, OUS Radiumhospitalet, Oslo (Norway); K. G. Jebsen Breast cancer centre, Institute for Clinical Medicine, University of Oslo, Oslo (Norway); Grenaker-Alns, Grethe Irene; Nebdal, Daniel [Department of Genetics, Institute for Cancer Research, OUS Radiumhospitalet, Oslo (Norway)] [Department of Genetics, Institute for Cancer Research, OUS Radiumhospitalet, Oslo (Norway); Syvnen, Ann-Christine [Department of Medical Sciences, Uppsala University, Uppsala (Sweden)] [Department of Medical Sciences, Uppsala University, Uppsala (Sweden); Rdningen, Olaug [Department of Medical Genetics, OUS Ullevaal, Oslo (Norway)] [Department of Medical Genetics, OUS Ullevaal, Oslo (Norway); Alsner, Jan; Overgaard, Jens [Department of Experimental Clinical Oncology, Ahus University Hospital (Norway)] [Department of Experimental Clinical Oncology, Ahus University Hospital (Norway); Borresen-Dale, Anne-Lise [Department of Genetics, Institute for Cancer Research, OUS Radiumhospitalet, Oslo (Norway) [Department of Genetics, Institute for Cancer Research, OUS Radiumhospitalet, Oslo (Norway); K. G. Jebsen Breast cancer centre, Institute for Clinical Medicine, University of Oslo, Oslo (Norway); Foss, Sophie D. [K. G. Jebsen Breast cancer centre, Institute for Clinical Medicine, University of Oslo, Oslo (Norway) [K. G. Jebsen Breast cancer centre, Institute for Clinical Medicine, University of Oslo, Oslo (Norway); National Resource Centre for Late Effects after Cancer Treatment, OUS Radiumhospitalet, Oslo (Norway); Kristensen, Vessela N. [Department of Genetics, Institute for Cancer Research, OUS Radiumhospitalet, Oslo (Norway) [Department of Genetics, Institute for Cancer Research, OUS Radiumhospitalet, Oslo (Norway); K. G. Jebsen Breast cancer centre, Institute for Clinical Medicine, University of Oslo, Oslo (Norway); Department of Clinical Molecular Biology (EpiGen), Division of Medicine, Ahus University Hospital (Norway)

2013-07-15T23:59:59.000Z

94

Post Treatment With an FGF Chimeric Growth Factor Enhances Epithelial Cell Proliferation to Improve Recovery From Radiation-Induced Intestinal Damage  

SciTech Connect (OSTI)

Purpose: A fibroblast growth factor (FGF) 1-FGF2 chimera (FGFC) was created previously and showed greater structural stability than FGF1. This chimera was capable of stimulating epithelial cell proliferation much more strongly than FGF1 or FGF2 even without heparin. Therefore FGFC was expected to have greater biologic activity in vivo. This study evaluated and compared the protective activity of FGFC and FGF1 against radiation-induced intestinal injuries. Methods and Materials: We administered FGFC and FGF1 intraperitoneally to BALB/c mice 24 h before or after total-body irradiation (TBI). The numbers of surviving crypts were determined 3.5 days after TBI with gamma rays at doses ranging from 8 to 12 Gy. Results: The effect of FGFC was equal to or slightly superior to FGF1 with heparin. However, FGFC was significantly more effective in promoting crypt survival than FGF1 (p < 0.01) when 10 {mu}g of each FGF was administered without heparin before irradiation. In addition, FGFC was significantly more effective at promoting crypt survival (p < 0.05) than FGF1 even when administered without heparin at 24 h after TBI at 10, 11, or 12 Gy. We found that FGFC post treatment significantly promoted 5-bromo-2'-deoxyuridine incorporation into crypts and increased crypt depth, resulting in more epithelial differentiation. However, the number of apoptotic cells in FGFC-treated mice decreased to almost the same level as that in FGF1-treated mice. Conclusions: These findings suggest that FGFC strongly enhanced radioprotection with the induction of epithelial proliferation without exogenous heparin after irradiation and is useful in clinical applications for both the prevention and post treatment of radiation injuries.

Nakayama, Fumiaki, E-mail: f_naka@nirs.go.j [Department of Radiation Emergency Medicine, National Institute of Radiological Sciences, Chiba (Japan); Hagiwara, Akiko; Umeda, Sachiko [Department of Radiation Emergency Medicine, National Institute of Radiological Sciences, Chiba (Japan); Asada, Masahiro; Goto, Megumi; Oki, Junko; Suzuki, Masashi; Imamura, Toru [Signaling Molecules Research Group, Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba (Japan); Akashi, Makoto [Department of Radiation Emergency Medicine, National Institute of Radiological Sciences, Chiba (Japan)

2010-11-01T23:59:59.000Z

95

Analysis of Vision Loss Caused by Radiation-Induced Optic Neuropathy After Particle Therapy for Head-and-Neck and Skull-Base Tumors Adjacent to Optic Nerves  

SciTech Connect (OSTI)

Purpose: To assess the incident rates of vision loss (VL; based on counting fingers or more severe) caused by radiation-induced optic neuropathy (RION) after particle therapy for tumors adjacent to optic nerves (ONs), and to evaluate factors that may contribute to VL. Methods and Materials: From August 2001 to August 2006, 104 patients with head-and-neck or skull-base tumors adjacent to ONs were treated with carbon ion or proton radiotherapy. Among them, 145 ONs of 75 patients were irradiated and followed for greater than 12 months. The incident rate of VL and the prognostic factors for occurrence of VL were evaluated. The late effects of carbon ion and proton beams were compared on the basis of a biologically effective dose at alpha/beta = 3 gray equivalent (GyE{sub 3}). Results: Eight patients (11%) experienced VL resulting from RION. The onset of VL ranged from 17 to 58 months. The median follow-up was 25 months. No significant difference was observed between the carbon ion and proton beam treatment groups. On univariate analysis, age (>60 years), diabetes mellitus, and maximum dose to the ON (>110 GyE{sub 3}) were significant, whereas on multivariate analysis only diabetes mellitus was found to be significant for VL. Conclusions: The time to the onset of VL was highly variable. There was no statistically significant difference between carbon ion and proton beam treatments over the follow-up period. Based on multivariate analysis, diabetes mellitus correlated with the occurrence of VL. A larger study with longer follow-up is warranted.

Demizu, Yusuke, E-mail: y_demizu@nifty.co [Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo (Japan); Murakami, Masao; Miyawaki, Daisuke; Niwa, Yasue [Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo (Japan); Akagi, Takashi [Department of Accelerator Managing, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo (Japan); Sasaki, Ryohei [Division of Radiology, Kobe University Graduate School of Medicine, Kobe, Hyogo (Japan); Terashima, Kazuki [Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo (Japan); Suga, Daisaku [Department of Radiation Technology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo (Japan); Kamae, Isao [Division of Medical Statistics, Kobe University Graduate School of Medicine, Kobe, Hyogo (Japan); Hishikawa, Yoshio [Department of Radiology, Hyogo Ion Beam Medical Center, Tatsuno, Hyogo (Japan)

2009-12-01T23:59:59.000Z

96

Generalized Adaptive A* Xiaoxun Sun  

E-Print Network [OSTI]

Generalized Adaptive A* Xiaoxun Sun USC Computer Science Los Angeles, California xiaoxuns spaces changes. Adaptive A* [7] is a Cite as: Generalized Adaptive A*, Xiaoxun Sun, Sven Koenig

Yeoh, William

97

Sensor response rate accelerator  

DOE Patents [OSTI]

An apparatus and method for sensor signal prediction and for improving sensor signal response time, is disclosed. An adaptive filter or an artificial neural network is utilized to provide predictive sensor signal output and is further used to reduce sensor response time delay.

Vogt, Michael C. (Westmont, IL)

2002-01-01T23:59:59.000Z

98

E-Print Network 3.0 - activity trial adapt Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Biology and Medicine 6 Running Head: CONFLICT ADAPTATION FOLLOWING ERRONEOUS RESPONSE PREPARATION Summary: (Botvinick et al., 2001). Reduced ACC activation (sometimes...

99

E-Print Network 3.0 - adaptive supply survival Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Sciences and Ecology 6 RICKARD, I.J. & LUMMAA V. 2007: The Predictive Adaptive Response and metabolic syndrome: Challenges for the hypothesis. Summary: 1: survival...

100

E-Print Network 3.0 - adaptive phased array Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

the desired array response; in this case... of adaptive beamformers on seismic data ... Source: van der Veen, Alle-Jan - Department of Electrical Engineering, Technische...

Note: This page contains sample records for the topic "radiation-induced adaptive responses" 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

BIODIVERSITY Incorporating sociocultural adaptive  

E-Print Network [OSTI]

BIODIVERSITY VIEWPOINT Incorporating sociocultural adaptive capacity in conservation hotspot of biodiversity threats. Conservation biogeography (Whittaker et al., 2005) has emerged as a critical area biodiversity (Mawdsley et al., 2009). Adjusting conservation strategies to maintain diversity in recognition

102

Dynamic Adaptation using Xen  

SciTech Connect (OSTI)

The topic of virtualization has received renewed attention. Xen is a popular open source type-I hypervisor. The Xen hypervisor currently has limited capabilities for runtime modification to the core hypervisor, which impairs research into dynamic adaptation for system-level virtualization. This paper discusses recent investigations into the feasibility of extending Xen to support runtime adaptation for core hypervisor service, e.g., scheduler.

Naughton, III, Thomas J [ORNL; Vallee, Geoffroy R [ORNL; Scott, Stephen L [ORNL

2007-01-01T23:59:59.000Z

103

Discriminative Adaptive Training and Bayesian Inference for  

E-Print Network [OSTI]

adaptation is a standard part of many speech recognition systems. This process requires some adaptation data

de Gispert, Adrià

104

Nuclear apoJ: A low dose radiation inducible regulator of cell death. Final report for period September 15, 1998 - September 14, 2001  

SciTech Connect (OSTI)

This project was based on preliminary data that was published by Dr. Boothman (Yang et al. 2000) which indicated a strong induction of apoJ gene expression, increased secretion of the protein, and accumulation of an apparently somewhat different form of the apoJ protein in the nucleus of MCF-7 breast carcinoma cells undergoing response to DNA damage. A clone expressing apoJ protein was isolated that was capable of interacting with Ku80, a component of the double strand break repair complex that is essential for the successful repair of rearranging immunoglobulin and T-cell receptor genes as evidenced by failure to produce mature B and T cells in the absence of Ku70. ApoJ clones isolated and characterized by Dr. Boothman bound strongly to a Ku-70 ''bait'' protein. Over-expression of these same clones in a cell line was capable of killing the cell. ApoJ is very strongly induced in many instances of programmed cell death and has been proposed repeatedly to play some sort of effector role in the process. Our principle hypothesis for this study was that the strong induction of the apoJ gene and the particular expression of a nuclear form of the protein was potentially a causal factor in the decision point made by the cell as it attempts to repair double-strand breakage based DNA damage. The hypothesis was that if sufficiently high damage occurred, it would be deleterious to maintain the cell's viability through continued DNA repair. One method to inhibit DNA repair might be by inhibiting proteins such as Ku-70 that are necessary for double-strand break repair. If apoJ does play a critical role in tipping the decision balance over to cell death, we reasoned that deficiency of apoJ would cause increased accumulation of cells with DNA damage and that this might decrease cell death in response to DNA damage and increase tumor occurrence rates. To test this hypothesis and its potential implications, we exposed wildtype and apoJ deficient animals that we constructed through gene targeting to increasing levels of ionizing radiation from a Cesium source. Data gathered under the support of this grant application initially indicated that apoJ deficient animals were more resistant to radiation, but as we accumulated more and more data points and covered a tighter exposure range, the genotype-based differences became insignificant. However, the possibility existed that because mortality based radiation-resistance could be attributable to mechanism for which nuclear apoJ was not rate determining, we maintained a very large of colony of apoJ knockout and wildtype animals in both the C57/B16 and Cv129 strain backgrounds that were exposed to sub-lethal levels of ionizing radiation to monitor for the occurrence of tumors. These animals were allowed to fully recover and age normally in either germ free or normal animal housing. Our results demonstrated no significant differences between wildtype and apoJ knockout animals over a period that extended up to 30 months for individual animals. We recorded similar weight gain, a relatively low mortality rate, and a similar mixture and rate of sarcoma and adenocarcinomas after surviving the initial ionizing radiation exposures. Thus we conclude that apoJ gene function, which was totally eliminated by our gene targeting, did not influence radiation sensitivity or serve as a tumor suppressor in response to DNA damage.

Aronow, Bruce J.

2002-04-19T23:59:59.000Z

105

ADAPTIVE RADIATION ROSEMARY G. GILLESPIE  

E-Print Network [OSTI]

1 A ADAPTIVE RADIATION ROSEMARY G. GILLESPIE University of California, Berkeley Adaptive radiation- tions and convergence of species groups on different land masses. Since then, adaptive radiation has diversity within a rapidly multiplying lineage." There are radiations that are not adaptive

Gillespie, Rosemary

106

Lymphatic Functional Adaptations to Prolonged Changes in Mechanical Stimuli  

E-Print Network [OSTI]

). The adaptive responses first reported in the present work, are thus consistent with an accepted understanding of interstitial volume regulation (4). 3.1.3b. Strengths of the experimental model The difficulty in studying adaptation of blood vessels..., one end of a fluid-filled tube (Tygon R3603, Saint- Gobain Performance Plastic, Garden Grove, CA) was inserted through the wall of the vein while the other end was brought outside of the animal. Exteriorized intestine and mesentery were...

Nguyen, Tam L

2013-03-21T23:59:59.000Z

107

Adaptive Medical Information Delivery Combining User, Task and Situation Models  

E-Print Network [OSTI]

., in their model for adaptive hypermedia AHAM [2], distinguish contentadaptation from link adaptation

108

Adaptive filters for detection of gravitational waves from coalescing binaries  

SciTech Connect (OSTI)

In this work we propose use of infinite impulse response adaptive line enhancer (IIR ALE) filters for detection of gravitational waves from coalescing binaries. We extend our previous work and define an adaptive matched filter structure. Filter performance is analyzed in terms of the tracking capability and determination of filter parameters. Furthermore, following the Neyman-Pearson strategy, receiver operating characteristics are derived, with closedform expressions for detection threshold, false alarm, and detection probability. Extensive tests demonstrate the effectiveness of adaptive filters both in terms of small computational cost and robustness.

Eleuteri, Antonio; Milano, Leopoldo; De Rosa, Rosario; Garufi, Fabio; Acernese, Fausto; Barone, Fabrizio; Giordano, Lara; Pardi, Silvio [Dip. di Scienze Fisiche, Universita di Napoli 'Federico II', via Cintia, I-80126 Naples (Italy) and INFN sez. Napoli, via Cintia, I-80126 Naples (Italy); Dip. di Scienze Farmaceutiche, Universita di Salerno, via Ponte Don Melillo, 84084 Fisciano (Saudi Arabia) (IT) and INFN sez. Napoli, via Cintia, I-80126 Naples (Italy); Dip. di Matematica ed Applicazioni, Universita di Napoli 'Federico II', via Cintia, I-80126 Naples (Italy) and INFN sez. Napoli, via Cintia, I-80126 Naples (Italy)

2006-06-15T23:59:59.000Z

109

ON AN ADAPTIVE CONTROL ALGORITHM FOR ADAPTIVE OPTICS APPLICATIONS  

E-Print Network [OSTI]

ON AN ADAPTIVE CONTROL ALGORITHM FOR ADAPTIVE OPTICS APPLICATIONS MOODY T. CHU \\Lambda Abstract. The wavefront aberrations induced by atmospheric turbulence can severely degrade the performance of an optical imaging system. Adaptive optics refers to the process of removing unwanted wave front distortions

110

ON AN ADAPTIVE CONTROL ALGORITHM FOR ADAPTIVE OPTICS APPLICATIONS  

E-Print Network [OSTI]

ON AN ADAPTIVE CONTROL ALGORITHM FOR ADAPTIVE OPTICS APPLICATIONS MOODY T. CHU Abstract. The wavefront aberrations induced by atmospheric turbulence can severely degrade the performance of an optical imaging system. Adaptive optics refers to the process of removing unwanted wave front distortions

111

Spectral-element adaptive refinement  

E-Print Network [OSTI]

Spectral-element adaptive refinement magnetohydrodynamic simulations of the island coalescence;Abstract A recently developed spectral-element adaptive refinement incompressible magnetohydrodynamic (MHD statically refined and dynamically refined grids. The island coalescence instability is a fundamental MHD

Ng, Chung-Sang

112

Adaptation of Microvasculature to Pulsatility  

E-Print Network [OSTI]

adaptation has not yet been fully characterized. In fact, standard mathematical models using the common assumption that vessels solely adapt to steady flow do not reproduce normal vascular structure. Therefore, we developed a simple, mathematical model of a...

Bimal, Tia

2013-09-24T23:59:59.000Z

113

Climate Change, Adaptation, and Development  

E-Print Network [OSTI]

Climate Change, Adaptation, and Development Daniel H. Cole*THE COSTS OF CLIMATE CHANGE . ADAPTATIONCONVENTION ON CLIMATE CHANGE . IV. A.

Cole, Daniel H.

2008-01-01T23:59:59.000Z

114

Radiation Induced Nanocrystal Formation in Metallic Glasses  

E-Print Network [OSTI]

The irradiation of metallic glasses to induce nanocrystallization was studied in two metallic glass compositions, Cu50Zr45Ti5 and Zr55Cu30Al10Ni5. Atomic mobility was described using a model based on localized excess free volume due to displace...

Carter, Jesse

2010-01-14T23:59:59.000Z

115

Mitigation of radiation induced surface contamination  

DOE Patents [OSTI]

A process for mitigating or eliminating contamination and/or degradation of surfaces having common, adventitious atmospheric contaminants adsorbed thereon and exposed to radiation. A gas or a mixture of gases is introduced into the environment of a surface(s) to be protected. The choice of the gaseous species to be introduced (typically a hydrocarbon gas, water vapor, or oxygen or mixtures thereof) is dependent upon the contaminant as well as the ability of the gaseous species to bind to the surface to be protected. When the surface and associated bound species are exposed to radiation reactive species are formed that react with surface contaminants such as carbon or oxide films to form volatile products (e.g., CO, CO.sub.2) which desorb from the surface.

Klebanoff, Leonard E. (Dublin, CA); Stulen, Richard H. (Livermore, CA)

2003-01-01T23:59:59.000Z

116

Adaptive control for accelerators  

DOE Patents [OSTI]

An adaptive feedforward control loop is provided to stabilize accelerator beam loading of the radio frequency field in an accelerator cavity during successive pulses of the beam into the cavity. A digital signal processor enables an adaptive algorithm to generate a feedforward error correcting signal functionally determined by the feedback error obtained by a beam pulse loading the cavity after the previous correcting signal was applied to the cavity. Each cavity feedforward correcting signal is successively stored in the digital processor and modified by the feedback error resulting from its application to generate the next feedforward error correcting signal. A feedforward error correcting signal is generated by the digital processor in advance of the beam pulse to enable a composite correcting signal and the beam pulse to arrive concurrently at the cavity.

Eaton, Lawrie E. (Los Alamos, NM); Jachim, Stephen P. (Los Alamos, NM); Natter, Eckard F. (Santa Fe, NM)

1991-01-01T23:59:59.000Z

117

Transforming Growth Factor ?-1 (TGF-?1) Is a Serum Biomarker of Radiation Induced Fibrosis in Patients Treated With Intracavitary Accelerated Partial Breast Irradiation: Preliminary Results of a Prospective Study  

SciTech Connect (OSTI)

Purpose: To examine a relationship between serum transforming growth factor ? -1 (TGF-?1) values and radiation-induced fibrosis (RIF). Methods and Materials: We conducted a prospective analysis of the development of RIF in 39 women with American Joint Committee on Cancer stage 0-I breast cancer treated with lumpectomy and accelerated partial breast irradiation via intracavitary brachytherapy (IBAPBI). An enzyme-linked immunoassay (Quantikine, R and D, Minneapolis, MN) was used to measure serum TGF-?1 before surgery, before IBAPBI, and during IBAPBI. Blood samples for TGF-?1 were also collected from 15 healthy, nontreated women (controls). The previously validated tissue compliance meter (TCM) was used to objectively assess RIF. Results: The median time to follow-up for 39 patients was 44 months (range, 5-59 months). RIF was graded by the TCM scale as 0, 1, 2, and 3 in 5 of 20 patients (25%), 6 of 20 patients (30%), 5 of 20 patients (25%), and 4 of 20 patients (20%), respectively. The mean serum TGF-?1 values were significantly higher in patients before surgery than in disease-free controls, as follows: all cancer patients (30,201 5889 pg/mL, P=.02); patients with any type of RIF (32,273 5016 pg/mL, P<.0001); and women with moderate to severe RIF (34,462 4713 pg/mL, P<0.0001). Patients with moderate to severe RIF had significantly elevated TGF-?1 levels when compared with those with none to mild RIF before surgery (P=.0014) during IBAPBI (P?0001), and the elevation persisted at 6 months (P?.001), 12 months (P?.001), 18 months (P?.001), and 24 months (P=.12). A receiver operating characteristic (ROC) curve of TGF-?1 values predicting moderate to severe RIF was generated with an area under the curve (AUC){sub ROC} of 0.867 (95% confidence interval 0.700-1.000). The TGF-?1 threshold cutoff was determined to be 31,000 pg/mL, with associated sensitivity and specificity of 77.8% and 90.0%, respectively. Conclusions: TGF-?1 levels correlate with the development of moderate to severe RIF. The pre-IBAPBI mean TGF-?1 levels can serve as an early biomarker for the development of moderate to severe RIF after IBAPBI.

Boothe, Dustin L. [Weill Cornell Medical College of Cornell University, New York, New York (United States); Coplowitz, Shana [Department of Radiation Oncology, Stich Radiation Center, Weill Cornell Medical College of Cornell University, New York, New York (United States); Greenwood, Eleni [Weill Cornell Medical College of Cornell University, New York, New York (United States); Barney, Christian L. [Department of Radiation Oncology, Ohio State University, Columbus, Ohio (United States); Christos, Paul J. [Division of Biostatistics and Epidemiology, Department of Public Health, Weill Cornell Medical College of Cornell University, New York, New York (United States); Parashar, Bhupesh; Nori, Dattatreyudu; Chao, K. S. Clifford [Department of Radiation Oncology, Stich Radiation Center, Weill Cornell Medical College of Cornell University, New York, New York (United States); Wernicke, A. Gabriella, E-mail: gaw9008@med.cornell.edu [Department of Radiation Oncology, Stich Radiation Center, Weill Cornell Medical College of Cornell University, New York, New York (United States)

2013-12-01T23:59:59.000Z

118

Adapting to Survive  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAbout the Building TechnologiesS1!4T op Document: NAActivitiesAdapting to

119

Budget-based Control for Interactive Services with Adaptive Execution  

E-Print Network [OSTI]

We study the problem of managing a class of interactive services to meet a response time target while achieving high service quality. We focus here on interactive services that support adaptive execution, such as web search engines and finance servers. With adaptive execution, when a request receives more processing time, its result improves, posing new challenges and opportunities for resource management. We propose a new budget-based control model for interactive services with adaptive execution. The budget represents the amount of resources assigned to all pending requests. The budgetbased control model consists of two components: (1) a hybrid control mechanism, which combines adaptive and integral controllers and controls the budget in order to meet the response time target with small steady-state error, fast settling time and little runtime overhead, and (2) an optimization procedure, which takes advantage of adaptive execution to maximize the total response quality of all pending requests under a given budget. We implement and evaluate the budget-based control model experimentally in Microsoft Bing, a commercial web search engine. The experimental results show that it achieves more accurate control of mean response time and higher response quality than traditional static and dynamic admission control techniques that control the queue length. We also apply the model to a finance server that estimates option prices, and conduct a simulation study. The simulation results show large benefits for budget-based control. For example, under the same response time and quality requirements, the budget-based model accommodates double the system throughput compared to a traditional queuebased control model. 1.

Yuxiong He; Zihao Ye; Qiang Fu; Sameh Elnikety

120

Rendering Adaptation to Address Communication and Computation Constraints in Cloud Mobile Gaming  

E-Print Network [OSTI]

Rendering Adaptation to Address Communication and Computation Constraints in Cloud Mobile Gaming the responsibility of executing the gaming engines, including the most compute intensive tasks of graphic rendering imposed by the cost and availability of cloud servers. In this paper, we propose a rendering adaptation

California at San Diego, University of

Note: This page contains sample records for the topic "radiation-induced adaptive responses" 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

Adaptive Restoration of Airborne Daedalus AADS1268 ATM Thermal Data  

SciTech Connect (OSTI)

To incorporate the georegistration and restoration processes into airborne data processing in support of U.S. Department of Energy's nuclear emergency response task, we developed an adaptive restoration filter for airborne Daedalus AADS1268 ATM thermal data based on the Wiener filtering theory. Preliminary assessment shows that this filter enhances the detectability of small weak thermal anomalies in AADS1268 thermal images.

D. Yuan; E. Doak; P. Guss; A. Will

2002-01-01T23:59:59.000Z

122

Adaptive coherent interferometric imaging for sensor networks Gregoire Derveauxa)  

E-Print Network [OSTI]

with distributed sensor networks is presented. The sensors record the impulse response of the unknown background imaging when the background is known is considered in Ref.8. The sensors record an approximate impulseAdaptive coherent interferometric imaging for sensor networks Gr´egoire Derveauxa) INRIA Domaine de

Papanicolaou, George C.

123

ORIGINAL PAPER Is selective thinning an adequate practice for adapting  

E-Print Network [OSTI]

ORIGINAL PAPER Is selective thinning an adequate practice for adapting Quercus ilex coppices. & Objectives We investigated how selective thinning affected the response of an old Quercus ilex coppice to 6 in abandoned Q. ilex coppice stands helps remaining trees to cope with current and future (probably longer

Boyer, Edmond

124

Making climate adaptation work : strategies for resource constrained South Asian mega-cities  

E-Print Network [OSTI]

This dissertation compares the responses of Dhaka, Bangladesh and Kolkata, India to the serious challenges posed by climate change, particularly in the water sector. Drawing on the theories of "adaptation as development" ...

Dutta-Koehler, Madhu Chhanda

2013-01-01T23:59:59.000Z

125

Emerging patterns of adaptive re-use : the new American House Hotel  

E-Print Network [OSTI]

This thesis aims to develop a design solution for the adaptive reuse of the American House Hotel that answers an architectural design challenge with technical responses. The process of actualization has been pushed a bit ...

Moody, Linda A

1984-01-01T23:59:59.000Z

126

Maintainable and Reusable Scientific Software Adaptation Democratizing Scientific Software Adaptation  

E-Print Network [OSTI]

Adaptation Pilsung Kang, Eli Tilevich, Srinidhi Varadarajan, and Naren Ramakrishnan Center for High, and available resources to en- sure its efficiency and reliability. Although adaptation pat- terns can be found, Maintenance, and Enhancement; D.2.13 [Reusable Soft- ware]: [Reusable libraries]; D.3.3 [Language Constructs

Ryder, Barbara G.

127

BRIDGING NAVIGATION, SEARCH AND ADAPTATION. Adaptive Hypermedia Models Evolution  

E-Print Network [OSTI]

Corpus, Dexter Model, AHAM, GAF. Abstract: Adaptive Hypermedia Systems (AHS) have long been concentrating The most referenced (but certainly not only) Adaptive Hypermedia (AH) model dates back to 1999. Since AHAM/Hypermedia modelling from Dexter Model through AHAM to the proposed GAF model, out- line advantages of each framework

De Bra, Paul

128

Organizational Adaptation Kathleen M. Carley  

E-Print Network [OSTI]

-humans. For example, they suggest that organizational learning resides not just in the minds of the personnel withinOrganizational Adaptation Kathleen M. Carley Dept. of Social and Decision Sciences Carnegie Mellon: Kathleen M. Carley, 1998, "Organizational Adaptation." Annals of Operations Research. 75: 25-47. #12

Sadeh, Norman M.

129

Adaptation, Learning, and Optimization over  

E-Print Network [OSTI]

Adaptation, Learning, and Optimization over Networks Ali H. Sayed University of California at Los 2014 A. H. Sayed DOI: 10.1561/2200000051 Adaptation, Learning, and Optimization over Networks Ali H . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.6 Notation and Symbols . . . . . . . . . . . . . . . . . . . . 8 2 Optimization by Single Agents

California at Los Angeles, University of

130

Adaptive Optics in Star Formation  

E-Print Network [OSTI]

Over the past ten years, the concept of adaptive optics has evolved from early experimental stages to a standard observing tool now available at almost all major optical and near-infrared telescope facilities. Adaptive optics will also be essential in exploiting the full potential of the large optical/infrared interferometers currently under construction. Both observations with high-angular resolution and at high contrast, and with a high point source sensitivity are facilitated by adaptive optics. Among the areas which benefit most from the use of adaptive optics are studies of the circumstellar environment (envelopes, disks, outflows), substellar companions and multiple systems, and dense young stellar populations. This contribution highlights some of the recent advances in star formation studies facilitated by adaptive optics, and gives a brief tutorial on optimized observing and data reduction strategies.

Wolfgang Brandner

2003-09-29T23:59:59.000Z

131

Demand Response for Ancillary Services  

SciTech Connect (OSTI)

Many demand response resources are technically capable of providing ancillary services. In some cases, they can provide superior response to generators, as the curtailment of load is typically much faster than ramping thermal and hydropower plants. Analysis and quantification of demand response resources providing ancillary services is necessary to understand the resources economic value and impact on the power system. Methodologies used to study grid integration of variable generation can be adapted to the study of demand response. In the present work, we describe and illustrate a methodology to construct detailed temporal and spatial representations of the demand response resource and to examine how to incorporate those resources into power system models. In addition, the paper outlines ways to evaluate barriers to implementation. We demonstrate how the combination of these three analyses can be used to translate the technical potential for demand response providing ancillary services into a realizable potential.

Alkadi, Nasr E [ORNL; Starke, Michael R [ORNL

2013-01-01T23:59:59.000Z

132

Adaptive excitation control in power systems  

E-Print Network [OSTI]

This thesis presents an adaptive excitation controller of power systems. The control law is derived by using model reference adaptive control (MRAC) or adaptive pole placement control (APPC) and an equilibrium tracking mechanism is implemented...

Chiu, Pei-Chen

2006-08-16T23:59:59.000Z

133

E-Print Network 3.0 - antioxidant response element-mediated Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

brake fern (Pteris vittata L.) upon... adaptive biochemical responses such as production of antioxidant ... Source: Ma, Lena - Soil and Water Science Department, University...

134

Low Dose Radiation Response Curves, Networks and Pathways in Human Lymphoblastoid Cells Exposed from 1 to 10 cGy of Acute Gamma Radiation  

E-Print Network [OSTI]

R.B. Mikkelsen, Ionizing radiation-induced, mitochondria-W.K. Rorrer, P.B. Chen, Radiation-induced proliferation ofresponse genes to ionizing radiation in human lymphoblastoid

Wyrobek, A. J.

2011-01-01T23:59:59.000Z

135

adaptive gene responses: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Sustainability. In February 2013, Athens of students to be future generators of sustainable value for business and society at large and to work Chatziantoniou, Damianos...

136

Adaptive Response Surface Method Using Inherited Latin Hypercube Design Points  

E-Print Network [OSTI]

ARSM is tested using a group of standard test problems and then applied to an engineering design problem. In both testing and design application, significant improvement in the efficiency of ARSM and positive results have been achieved. Besides CCD, alphabetical optimal designs, especially D

Wang, Gaofeng Gary

137

the Adaptive Response, Genetic Haplo-Insufficiency and Genomic Instability  

SciTech Connect (OSTI)

The linear no-threshold (LNT) hypothesis is the driving force in the establishment of radiation protection standards. However, the scientific basis for linearity has been brought into question, particularly due to the concerns about induced radiation resistance as it pertains to oxidative stress. Specifically, we investigated the observation that tumor hypoxia is associated with malignant progression, increased metastases, chemo- and radioresistance and poor prognosis. Experiments were conducted with non-malignant 3T3/NIH cells and normal human lung fibroblasts (NHLF) that were subjected to ?-irradiation under the levels of oxygen resembling those in growing tumors, and related our data to the concentrations of dissolved oxygen (DO), which is a better indicator of the amounts of residual oxygen inside the cells cultured in the hypoxic or anoxic atmosphere. We found that at DO levels about 0.5 mg/L cells subjected to both short-term (17 hours) and prolonged (48-72 hours) hypoxia continued to proliferate, and that apoptotic events were decreased at the early hours of hypoxic treatment. We showed that the short-term hypoxia up-regulated p53-binding protein 1 (53BP1) and resulted in facilitated 53BP1 nuclear foci formation and disappearance, thus indicating the higher efficiency of DNA double strand breaks repair processes. The latter was confirmed by the lower micronuclei incidence in irradiated hypoxic cells.

Geard, Charles R.

2014-12-12T23:59:59.000Z

138

adaptive response induced: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

NANOLAMINATES . Open Access Theses and Dissertations Summary: ??To characterize the self-propagating, high-temperature exothermic alloying reactions of NiAl nanoscaled...

139

adaptive responses induced: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

NANOLAMINATES . Open Access Theses and Dissertations Summary: ??To characterize the self-propagating, high-temperature exothermic alloying reactions of NiAl nanoscaled...

140

Automated Grid Disruption Response System: Robust Adaptive Topology Control (RATC)  

SciTech Connect (OSTI)

GENI Project: The RATC research team is using topology control as a mechanism to improve system operations and manage disruptions within the electric grid. The grid is subject to interruption from cascading faults caused by extreme operating conditions, malicious external attacks, and intermittent electricity generation from renewable energy sources. The RATC system is capable of detecting, classifying, and responding to grid disturbances by reconfiguring the grid in order to maintain economically efficient operations while guaranteeing reliability. The RATC system would help prevent future power outages, which account for roughly $80 billion in losses for businesses and consumers each year. Minimizing the time it takes for the grid to respond to expensive interruptions will also make it easier to integrate intermittent renewable energy sources into the grid.

None

2012-03-01T23:59:59.000Z

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


141

The AROUND project: Adapting robotic disaster response to developing countries  

E-Print Network [OSTI]

Reduction (WCDR) [20] stresses this necessity in points no 89 ("Advanced technologies for disaster reduction hazards. As a consequence, in cities like Hanoi, not only are disasters (floods, storms, cyclones, fires

Boyer, Edmond

142

Adaptable architecture : a computational exploration into responsive design systems  

E-Print Network [OSTI]

Based on the fact that architecture is, among other things, the crystallization of a mediation among design intentions (function), meaning and contextual constraints (performance), we as designers are obligated to produce ...

Zulas, Alejandro, 1976-

2004-01-01T23:59:59.000Z

143

Autonomous adaptive acoustic relay positioning  

E-Print Network [OSTI]

We consider the problem of maximizing underwater acoustic data transmission by adaptively positioning an autonomous mobile relay so as to learn and exploit spatial variations in channel performance. The acoustic channel ...

Cheung, Mei Yi, S.M. Massachusetts Institute of Technology

2013-01-01T23:59:59.000Z

144

Adaptive multiconfigurational wave functions  

SciTech Connect (OSTI)

A method is suggested to build simple multiconfigurational wave functions specified uniquely by an energy cutoff ?. These are constructed from a model space containing determinants with energy relative to that of the most stable determinant no greater than ?. The resulting ?-CI wave function is adaptive, being able to represent both single-reference and multireference electronic states. We also consider a more compact wave function parameterization (?+SD-CI), which is based on a small ?-CI reference and adds a selection of all the singly and doubly excited determinants generated from it. We report two heuristic algorithms to build ?-CI wave functions. The first is based on an approximate prescreening of the full configuration interaction space, while the second performs a breadth-first search coupled with pruning. The ?-CI and ?+SD-CI approaches are used to compute the dissociation curve of N{sub 2} and the potential energy curves for the first three singlet states of C{sub 2}. Special attention is paid to the issue of energy discontinuities caused by changes in the size of the ?-CI wave function along the potential energy curve. This problem is shown to be solvable by smoothing the matrix elements of the Hamiltonian. Our last example, involving the Cu{sub 2}O{sub 2}{sup 2+} core, illustrates an alternative use of the ?-CI method: as a tool to both estimate the multireference character of a wave function and to create a compact model space to be used in subsequent high-level multireference coupled cluster computations.

Evangelista, Francesco A., E-mail: francesco.evangelista@emory.edu [Department of Chemistry and Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322 (United States)

2014-03-28T23:59:59.000Z

145

An Adaptive Voltage Control Algorithm with Multiple Distributed Energy  

SciTech Connect (OSTI)

Distributed energy resources (DE) with power electronics (PE) interfaces with the right control are capable of providing reactive power related ancillary services. Voltage regulation in particular has drawn much attention. In this paper the challenges to control multiple DEs to regulate the local voltage in distribution systems is addressed and a decentralized adaptive voltage control method is proposed. The simulation results in different system conditions show that this adaptive voltage control method is capable of satisfying the fast response speed requirement without causing oscillation or instability of the system. Since this method has high tolerance to the shortage of the system parameters and can be widely adaptive to the variable operation situations of the power systems, it is very suited for the utility application.

Li, Huijuan [University of Tennessee, Knoxville (UTK); Li, Fangxing [ORNL; Adhikari, Sarina [ORNL; Xu, Yan [ORNL; Rizy, D Tom [ORNL; Kueck, John D [ORNL

2009-01-01T23:59:59.000Z

146

Mutations in Global Regulators Lead to Metabolic Selection during Adaptation to Complex Environments  

SciTech Connect (OSTI)

Adaptation to ecologically complex environments can provide insights into the evolutionary dynamics and functional constraints encountered by organisms during natural selection. Unlike adaptation to a single limiting resource, adaptation to a new environment with abundant and varied resources can be difficult to achieve by small incremental changes since many mutations are required to achieve even modest gains in fitness. Since changing complex environments are quite common in nature, we investigated how such an epistatic bottleneck can be avoided to allow rapid adaptation. We show that adaptive mutations arise repeatedly in independently evolved populations in the context of greatly increased genetic and phenotypic diversity. We go on to show that weak selection requiring substantial metabolic reprogramming can be readily achieved by mutations in the global response regulator arcA and the stress response regulator rpoS. We identified 46 unique single-nucleotide variants of arcA and 18 mutations in rpoS, nine of which resulted in stop codons or large deletions, suggesting that a subtle modulation of ArcA function and knockouts of rpoS are largely responsible for the metabolic shifts leading to adaptation. These mutations allow a higher order metabolic selection that eliminates epistatic bottlenecks, which could occur when many changes would be required. Proteomic and carbohydrate analysis of adapting E. coli populations revealed an up-regulation of enzymes associated with the TCA cycle and amino acid metabolism and an increase in the secretion of putrescine. The overall effect of adaptation across populations is to redirect and efficiently utilize uptake and catabolism of abundant amino acids. Concomitantly, there is a pronounced spread of more ecologically limited strains that results from specialization through metabolic erosion. Remarkably, the global regulators arcA and rpoS can provide a one-step mechanism of adaptation to a novel environment, which highlights the importance of global resource management as a powerful strategy to adaptation.

Saxer, Gerda; Krepps, Michael D.; Merkley, Eric D.; Ansong, Charles; Kaiser, Brooke LD; Valovska, Marie-Thrse; Ristic, Nikola; Yeh, Ping T.; Prakash, Vittal; Leiser, Owen P.; Nakhleh, Luay; Gibbons, Henry S.; Kreuzer, Helen W.; Shamoo, Yousif

2014-12-11T23:59:59.000Z

147

Matrix adaptation in discriminative vector quantization  

E-Print Network [OSTI]

. Gabriel Zachmann (Computer Graphics) #12;Matrix adaptation in discriminative vector quantization Petra

Zachmann, Gabriel

148

Regional Water Management: Adapting to Uncertain Water  

E-Print Network [OSTI]

Regional Water Management: Adapting to Uncertain Water Supply and Demand Jim Schneider, Ph · How Nebraska manages water · Dealing with uncertain water supplies: adaptive management #12;Regional-wide, systematic approach · Flexible--Adaptive Management Adaptive Manageme nt #12;Integrated Water Management

Nebraska-Lincoln, University of

149

Adaptive Liquid Crystal Windows  

SciTech Connect (OSTI)

Energy consumption by private and commercial sectors in the U.S. has steadily grown over the last decade. The uncertainty in future availability of imported oil, on which the energy consumption relies strongly, resulted in a dramatic increase in the cost of energy. About 20% of this consumption are used to heat and cool houses and commercial buildings. To reduce dependence on the foreign oil and cut down emission of greenhouse gases, it is necessary to eliminate losses and reduce total energy consumption by buildings. To achieve this goal it is necessary to redefine the role of the conventional windows. At a minimum, windows should stop being a source for energy loss. Ideally, windows should become a source of energy, providing net gain to reduce energy used to heat and cool homes. It is possible to have a net energy gain from a window if its light transmission can be dynamically altered, ideally electronically without the need of operator assistance, providing optimal control of the solar gain that varies with season and climate in the U.S. In addition, the window must not require power from the building for operation. Resolution of this problem is a societal challenge and of national interest and will have a broad global impact. For this purpose, the year-round, allclimate window solution to provide an electronically variable solar heat gain coefficient (SHGC) with a wide dynamic range is needed. AlphaMicron, Inc. (AMI) developed and manufactured 1ft 1ft prototype panels for the worlds first auto-adjusting Adaptive Liquid Crystal Windows (ALCWs) that can operate from sunlight without the need for external power source and demonstrate an electronically adjustable SHGC. This novel windows are based on AlphaMicrons patented e-Tint technology, a guesthost liquid crystal system implemented on flexible, optically clear plastic films. This technology is suitable both for OEM and aftermarket (retro-fitting) lamination to new and existing windows. Low level of power consumption by ALCWs allows for on-board power electronics for automatic matching of transmission through windows to varying climate conditions without drawing the power from the power grid. ALCWs are capable of transmitting more sunlight in winters to assist in heating and less sunlight in summers to minimize overheating. As such, they can change the window from being a source of energy loss to a source of energy gain. In addition, the scalable AMIs roll-to-roll process, proved by making 1ft 1ftALCW prototype panels, allows for cost-effective production of large-scale window panels along with capability to change easily their color and shape. In addition to architectural glazing in houses and commercial buildings, ALCWs can be used in other applications where control of sunlight is needed, such as green houses, used by commercial produce growers and botanical gardens, cars, aircrafts, etc.

Taheri, Bahman; Bodnar, Volodymyr

2011-12-31T23:59:59.000Z

150

Ann. N.Y. Acad. Sci. ISSN 0077-8923 Introduction to Climate Change Adaptation in New  

E-Print Network [OSTI]

change and the high costs and long-term planning needed to adapt effectively, investment can responsive climate change adaptation measures, both in the near- and long-term, that protect its citizens day more people recognize it as a major concern. An international panel of leading climate scientists

151

Exploring scaling up community-based adaptation: A case study with the PRODUCE Project in Rangpur, Bangladesh  

E-Print Network [OSTI]

is an approach to respond to these immediate impacts by adjusting the natural or human systems in response to actual impacts of climate change. Community-based adaptation (CBA) is a bottom-up and development-oriented view of adaptation that accommodates...

Harsoyo, Dwi, L. R.

2012-11-29T23:59:59.000Z

152

Modeling Cortical Plasticity Based on Adapting Lateral Interaction  

E-Print Network [OSTI]

A neural network model called LISSOM for the cooperative self-organization of afferent and lateral connections in cortical maps is applied to modeling cortical plasticity. After self-organization, the LISSOM maps are in a dynamic equilibrium with the input, and reorganize like the cortex in response to simulated cortical lesions and intracortical microstimulation. The model predicts that adapting lateral interactions are fundamental to cortical reorganization, and suggests techniques to hasten recovery following sensory cortical surgery.

153

Adaptive Optics for Large Telescopes  

SciTech Connect (OSTI)

The use of adaptive optics was originally conceived by astronomers seeking to correct the blurring of images made with large telescopes due to the effects of atmospheric turbulence. The basic idea is to use a device, a wave front corrector, to adjust the phase of light passing through an optical system, based on some measurement of the spatial variation of the phase transverse to the light propagation direction, using a wave front sensor. Although the original concept was intended for application to astronomical imaging, the technique can be more generally applied. For instance, adaptive optics systems have been used for several decades to correct for aberrations in high-power laser systems. At Lawrence Livermore National Laboratory (LLNL), the world's largest laser system, the National Ignition Facility, uses adaptive optics to correct for aberrations in each of the 192 beams, all of which must be precisely focused on a millimeter scale target in order to perform nuclear physics experiments.

Olivier, S

2008-06-27T23:59:59.000Z

154

Training Adaptive Decision-Making.  

SciTech Connect (OSTI)

Adaptive Thinking has been defined here as the capacity to recognize when a course of action that may have previously been effective is no longer effective and there is need to adjust strategy. Research was undertaken with human test subjects to identify the factors that contribute to adaptive thinking. It was discovered that those most effective in settings that call for adaptive thinking tend to possess a superior capacity to quickly and effectively generate possible courses of action, as measured using the Category Generation test. Software developed for this research has been applied to develop capabilities enabling analysts to identify crucial factors that are predictive of outcomes in fore-on-force simulation exercises.

Abbott, Robert G.; Forsythe, James C.

2014-10-01T23:59:59.000Z

155

Maintainable and Reusable Scientific Software Adaptation Democratizing Scientific Software Adaptation  

E-Print Network [OSTI]

.kang@samsung.com Eli Tilevich, Srinidhi Varadarajan, and Naren Ramakrishnan Center for High-End Computing Systems Dept resources to ensure its efficiency and reliability. Although adaptation patterns can be found in a sizable-oriented Pro- gramming; D.2.7 [Software Engineering]: Distribution, Maintenance, and Enhancement; D.2

Ramakrishnan, Naren

156

Adaptive wiener image restoration kernel  

DOE Patents [OSTI]

A method and device for restoration of electro-optical image data using an adaptive Wiener filter begins with constructing imaging system Optical Transfer Function, and the Fourier Transformations of the noise and the image. A spatial representation of the imaged object is restored by spatial convolution of the image using a Wiener restoration kernel.

Yuan, Ding (Henderson, NV)

2007-06-05T23:59:59.000Z

157

BC Agriculture Climate Change Adaptation  

E-Print Network [OSTI]

BC Agriculture Climate Change Adaptation Risk + Opportunity Assessment Provincial Report #12;published March 2012 by the British Columbia Agriculture & Food Climate Action Initiative www.BCAgClimateAction.ca project funding provided by Agriculture and Agri-food Canada BC Ministry of Agriculture BC Ministry

Pedersen, Tom

158

BC Agriculture Climate Change Adaptation  

E-Print Network [OSTI]

BC Agriculture Climate Change Adaptation Risk + Opportunity Assessment Provincial Report executive summary #12;published March 2012 by the British Columbia Agriculture & Food Climate Action Initiative www.BCAgClimateAction.ca project funding provided by Agriculture and Agri-food Canada BC Ministry of Agriculture BC Ministry

Pedersen, Tom

159

Adaptive protection algorithm and system  

DOE Patents [OSTI]

An adaptive protection algorithm and system for protecting electrical distribution systems traces the flow of power through a distribution system, assigns a value (or rank) to each circuit breaker in the system and then determines the appropriate trip set points based on the assigned rank.

Hedrick, Paul (Pittsburgh, PA) [Pittsburgh, PA; Toms, Helen L. (Irwin, PA) [Irwin, PA; Miller, Roger M. (Mars, PA) [Mars, PA

2009-04-28T23:59:59.000Z

160

7, 72357275, 2007 Adaptive radiative  

E-Print Network [OSTI]

Discussions Two adaptive radiative transfer schemes for numerical weather prediction models V. Venema 1 , A numerical weather prediction (NWP) and climate models. The atmosphere and the land surface are complex-stream approximation. In most weather prediction models these parameterisation schemes are therefore called infre

Boyer, Edmond

Note: This page contains sample records for the topic "radiation-induced adaptive responses" 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

adaptive control algorithm: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

24 25 Next Page Last Page Topic Index 1 ON AN ADAPTIVE CONTROL ALGORITHM FOR ADAPTIVE OPTICS APPLICATIONS Mathematics Websites Summary: ON AN ADAPTIVE CONTROL ALGORITHM FOR...

162

CLIMATE VULNERABILITY AND ADAPTATION STUDY FOR  

E-Print Network [OSTI]

CLIMATE VULNERABILITY AND ADAPTATION STUDY FOR CALIFORNIA Legal Analysis of Barriers's California Climate Change Center JULY 2012 CEC5002012019 Prepared for: California Energy Commission to that framework that would facilitate adaptation to climate change. Since such changes may be difficult

163

Climate Change Adaptation Planning | Department of Energy  

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

Change Adaptation Planning Climate Change Adaptation Planning October 7, 2014 6:00AM CDT to October 9, 2014 3:00PM CDT Norman, Oklahoma This course provides an introduction to...

164

IIR algorithms for adaptive line enhancement  

SciTech Connect (OSTI)

We introduce a simple IIR structure for the adaptive line enhancer. Two algorithms based on gradient-search techniques are presented for adapting the structure. Results from experiments which utilized real data as well as computer simulations are provided.

David, R.A.; Stearns, S.D.; Elliott, G.R.; Etter, D.M.

1983-01-01T23:59:59.000Z

165

Mechanics and Applications of Pressure Adaptive Honeycomb  

E-Print Network [OSTI]

A pressure-adaptive wing structure is presented that relies on the pressure-altitude relation to adapt the wing shape to the various flight conditions (e.g. landing and cruise). This structure employs conventional, certified ...

Vos, Roelof

2009-07-31T23:59:59.000Z

166

Adaptive security systems -- Combining expert systems with adaptive technologies  

SciTech Connect (OSTI)

The Adaptive Multisensor Integrated Security System (AMISS) uses a variety of computational intelligence techniques to reason from raw sensor data through an array of processing layers to arrive at an assessment for alarm/alert conditions based on human behavior within a secure facility. In this paper, the authors give an overview of the system and briefly describe some of the major components of the system. This system is currently under development and testing in a realistic facility setting.

Argo, P.; Loveland, R.; Anderson, K. [and others

1997-09-01T23:59:59.000Z

167

Adaptation in constant utility nonstationary environments  

E-Print Network [OSTI]

Adaptation in constant utility nonstationary environments Michael L. Littman & David H. Ackley Abstract Environments that vary over time present a fundamental problem to adaptive systems. Although adaptive opportunities. We consider a broad class of nonstationary environments, those which combine

Littman, Michael L.

168

Anisotropic Grid Adaptation for Multiple Aerodynamic Outputs  

E-Print Network [OSTI]

Anisotropic Grid Adaptation for Multiple Aerodynamic Outputs David A. Venditti and David L Anisotropic gridadaptive strategies are presented for viscous flow simulations in which the accurate estimation and Hessian-based anisotropic grid adaptation. Airfoil test cases are presented to demonstrate

Peraire, Jaime

169

Article original Adaptation digestive du lapin  

E-Print Network [OSTI]

Article original Adaptation digestive du lapin la teneur en constituants paritaux du rgime ne diffre pas d'un rgime l'autre, du fait d'une rgulation de l'nergie digestible ingre. L le rgime B. lapin / digestion / fibre / adaptation / transit Summary Digestive adaptation

Boyer, Edmond

170

E-Print Network 3.0 - adaptive systems Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

adaptive systems Page: << < 1 2 3 4 5 > >> 1 From Adaptive Hypermedia to the Adaptive Web Systems Summary: 1 From Adaptive Hypermedia to the Adaptive Web Systems Peter...

171

adapter protein tsad: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Ecosystem Adaptive Management Environmental Sciences and Ecology Websites Summary: ;2 Baltic Ecosystem Adaptive Management, BEAM, r ett tvrvetenskapligt...

172

adaptive antitumor immunity: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Ecosystem Adaptive Management Environmental Sciences and Ecology Websites Summary: ;2 Baltic Ecosystem Adaptive Management, BEAM, r ett tvrvetenskapligt...

173

adaptation azole drug: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Ecosystem Adaptive Management Environmental Sciences and Ecology Websites Summary: ;2 Baltic Ecosystem Adaptive Management, BEAM, r ett tvrvetenskapligt...

174

Original article Response of Pinus pinaster Ait. provenances at early  

E-Print Network [OSTI]

. pinaster in response to water shortage. These physiological adaptations complement known morphologicalOriginal article Response of Pinus pinaster Ait. provenances at early age to water supply. I. Water evolution of tissue water relations was assessed in 1-year-old seedlings of four Pinus pinaster Ait. prove

Paris-Sud XI, Universit de

175

Genetic shift in photoperiodic response correlated with global warming  

E-Print Network [OSTI]

Genetic shift in photoperiodic response correlated with global warming William E. Bradshaw observed in insects, birds, amphibians, and plants associated with global warm- ing during the latter half- tent with an adaptive evolutionary response to recent global warming. The latter half of the 20th

Cochran-Stafira, D. Liane

176

Center for Adaptive Optics* Santa Cruz,CA  

E-Print Network [OSTI]

Center for Adaptive Optics* Santa Cruz,CA The Center for Adaptive Optics (CfAO) will concentrate on astronomical and vision science applications of adaptive optics and will reach out to other adaptive optics communities to share technologies. It will develop new instruments optimized for adaptive optics. Adaptive

Grether, Gregory

177

Issues in adaptive mesh refinement  

SciTech Connect (OSTI)

In this paper, we present an approach for a patch-based adaptive mesh refinement (AMR) for multi-physics simulations. The approach consists of clustering, symmetry preserving, mesh continuity, flux correction, communications, and management of patches. Among the special features of this patch-based AMR are symmetry preserving, efficiency of refinement, special implementation offlux correction, and patch management in parallel computing environments. Here, higher efficiency of refinement means less unnecessarily refined cells for a given set of cells to be refined. To demonstrate the capability of the AMR framework, hydrodynamics simulations with many levels of refinement are shown in both two- and three-dimensions.

Dai, William Wenlong [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

178

Adaptive management: a paradigm for remediation of public facilities  

SciTech Connect (OSTI)

Public facility restoration planning traditionally focused on response to natural disasters and hazardous materials accidental releases. These plans now need to integrate response to terrorist actions. Therefore, plans must address a wide range of potential vulnerabilities. Similar types of broad remediation planning are needed for restoration of waste and hazardous material handling areas and facilities. There are strong similarities in damage results and remediation activities between unintentional and terrorist actions; however, the uncertainties associated with terrorist actions result in a re-evaluation of approaches to planning. Restoration of public facilities following a release of a hazardous material is inherently far more complex than in confined industrial settings and has many unique technical, economic, social, and political challenges. Therefore, they arguably involve a superset of drivers, concerns and public agencies compared to other restoration efforts. This superset of conditions increases complexity of interactions, reduces our knowledge of the initial conditions, and even condenses the timeline for restoration response. Therefore, evaluations of alternative restoration management approaches developed for responding to terrorist actions provide useful knowledge for large, complex waste management projects. Whereas present planning documents have substantial linearity in their organization, the 'adaptive management' paradigm provides a constructive parallel operations paradigm for restoration of facilities that anticipates and plans for uncertainty, multiple/simUltaneous public agency actions, and stakeholder participation. Adaptive management grew out of the need to manage and restore natural resources in highly complex and changing environments with limited knowledge about causal relationships and responses to restoration actions. Similarities between natural resource management and restoration of a facility and surrounding area(s) after a disruptive event suggest numerous advantages over preset linearly-structured plans by incorporating the flexibility and overlap of processes inherent in effective facility restoration. We discuss three restoration case studies (e.g., the Hart Senate Office Building anthrax restoration, Rocky Flats actinide remediation, and hurricane destruction restoration), that implement aspects of adaptive management but not a formal approach. We propose that more formal adoption of adaptive management principles could be a basis for more flexible standards to improve site-specific remediation plans under conditions of high uncertainty.

Janecky, David R [Los Alamos National Laboratory; Whicker, Jeffrey J [Los Alamos National Laboratory; Doerr, Ted B [NON LANL

2009-01-01T23:59:59.000Z

179

Adapting to Climate Change and Variability in the Great Lakes-St. Lawrence Basin Great Lakes-St. Lawrence Basin Project  

E-Print Network [OSTI]

; this is the adaptation component. Communication of climate change information to various publicsAdapting to Climate Change and Variability in the Great Lakes-St. Lawrence Basin 52 Great Lakes in response to potential climate change and variability. When we were preparing for this talk on what we have

180

Performance of Adaptive Query Processing in the Mariposa Distributed Database Management System  

E-Print Network [OSTI]

present performance results which show that in multi-user situations, when response time is used assigns a price to perform a service and may adjust its prices as it sees fit. In designing Mariposa such as the effect of supply and demand on prices. We investigate the benefits of adaptive distributed query

California at Irvine, University of

Note: This page contains sample records for the topic "radiation-induced adaptive responses" 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

Climate Change Adaptation New Perspectives for Natural Resource Management and Conservation1  

E-Print Network [OSTI]

Climate Change Adaptation New Perspectives for Natural Resource Management and Conservation1 Institute of Food and Agricultural Sciences February 2012 A Changing Climate for Conservation Climate change species of plants and animals are already shifting their distributions in response to climate change

Mazzotti, Frank

182

Adaptive Robust Control of Programmable Valves with Manufacturer Supplied Flow Mapping Only  

E-Print Network [OSTI]

and final tracking accuracy. In addition, real-time adaptation is used to reduce the degree of modelling-in and meter-out orifices [2], [3], [4] through valves number 1,2 and 4,5; and ii) enabling the precise control is the significant modelling error. The cartridge valves are of fast response and low cost but low accuracy

Yao, Bin

183

Machine Learning for Adaptive Computer Game Opponents .  

E-Print Network [OSTI]

??This thesis investigates the use of machine learning techniques in computer games to create a computer player that adapts to its opponent's game-play. This includes (more)

Miles, Jonathan David

2009-01-01T23:59:59.000Z

184

AN ADAPTIVE FINITE ELEMENT METHOD FOR THE ...  

E-Print Network [OSTI]

adaptive strategy is established for the diffraction grating problem, such that ...... applications in optical filters and guided mode resonance devices. the...

2014-05-20T23:59:59.000Z

185

Adaptive Barrier Strategies for Nonlinear Interior Methods  

E-Print Network [OSTI]

Feb 25, 2005 ... that adaptive choices, such as Mehrotra's probing procedure, outperform ... focus on the effects of merit functions or filters, and on regularization...

2005-02-25T23:59:59.000Z

186

Training for Climate Adaptation in Conservation  

Broader source: Energy.gov [DOE]

The Wildlife Conservation Society and the Northern Institute of Applied Climate Science are hosting this two-day training for climate adaptation.

187

Assessing Climate Change Impacts, Vulnerability and Adaptation...  

Open Energy Info (EERE)

The Case of Pantabangan-Carranglan Watershed Jump to: navigation, search Name Assessing Climate Change Impacts, Vulnerability and Adaptation: The Case of Pantabangan-Carranglan...

188

Mainstreaming Climate Change Adaptation into Development Planning...  

Open Energy Info (EERE)

Practitioners Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Mainstreaming Climate Change Adaptation into Development Planning: A Guide for Practitioners Agency...

189

Adapting California's water management to climate change  

E-Print Network [OSTI]

storage, water transfers, conservation, recycling, and desalination to meet changing demands. These same settlers had fewer intellectual, organizational, and economic resources to adapt than present

Pasternack, Gregory B.

190

Crosscutting Subsurface Initiative: Adaptive Control of Subsurface...  

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

in the ability to access, characterize, predict, and adaptively manipulate fracture and flow processes over scales from nanometers to kilometers. This town hall...

191

Response Elements  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

The Guide provides acceptable methods for meeting the requirement of DOE O 151.1C for response elements that respond or contribute to response as needed in an emergency. Cancels DOE G 151.1-1, Volume 3-1, DOE G 151.1-1, Volume 3-2, DOE G 151.1-1, Volume 3-3, DOE G 151.1-1, Volume 3-4, DOE G 151.1-1, Volume 4-1, DOE G 151.1-1, Volume 4-2, DOE G 151.1-1, Volume 4-3, DOE G 151.1-1, Volume 4-4, DOE G 151.1-1, Volume 4-5, and DOE G 151.1-1, Volume 4-6.

2007-07-11T23:59:59.000Z

192

Downhole tool adapted for telemetry  

DOE Patents [OSTI]

A cycleable downhole tool such as a Jar, a hydraulic hammer, and a shock absorber adapted for telemetry. This invention applies to other tools where the active components of the tool are displaced when the tool is rotationally or translationally cycled. The invention consists of inductive or contact transmission rings that are connected by an extensible conductor. The extensible conductor permits the transmission of the signal before, after, and during the cycling of the tool. The signal may be continuous or intermittent during cycling. The invention also applies to downhole tools that do not cycle, but in operation are under such stress that an extensible conductor is beneficial. The extensible conductor may also consist of an extensible portion and a fixed portion. The extensible conductor also features clamps that maintain the conductor under stresses greater than that seen by the tool, and seals that are capable of protecting against downhole pressure and contamination.

Hall, David R. (Provo, UT); Fox, Joe (Provo, UT)

2010-12-14T23:59:59.000Z

193

A fuzzy-tuned adaptive Kalman filter  

E-Print Network [OSTI]

In this paper, fuzzy processing is applied to the adaptive Kalman filter. The filter gain coefficients are adapted over a 50 dB range of unknown signal/noise dynamics, using fuzzy membership functions. Specific simulation results are shown for a...

Painter, John H.; Young Hwan Lho

1993-12-01T23:59:59.000Z

194

Outreach and Adaptive Strategies for Climate Change  

E-Print Network [OSTI]

Outreach and Adaptive Strategies for Climate Change: The Role of NOAA Sea Grant Extension years and generations about how to adapt to a changing climate. Effective preparation for possible effects of climate change includes engagement of resource managers, planners, public works officials

195

Adaptive Composite Map Projections Bernhard Jenny  

E-Print Network [OSTI]

Adaptive Composite Map Projections Bernhard Jenny Abstract--All major web mapping services use.The proposed composite map projection combines several projections that are recommended in cartographic.The composite projection adapts the maps geometry to scale, to the maps height-to-width ratio

Jenny, Bernhard

196

Enabling Informed Adaptation of Reformed Instructional Materials  

E-Print Network [OSTI]

Enabling Informed Adaptation of Reformed Instructional Materials Rachel E. Scherr and Andrew Elby 20742 USA Abstract. Instructors inevitably need to adapt even the best reform materials to suit instructors, and video clips of students working on the materials. Our materials thus facilitate their own

Elby, Andy

197

Adaptive Filtering of Multilingual Document Streams  

E-Print Network [OSTI]

the volume of new documents that must be examined by the user to manageable levels. This paper presents three techniques for extending adaptive monolingual text ltering techniques to manage multilingual document streamsAdaptive Filtering of Multilingual Document Streams Douglas W. Oard College of Library

Oard, Doug

198

WORKLOAD ADAPTATION IN AUTONOMIC DATABASE MANAGEMENT SYSTEMS  

E-Print Network [OSTI]

in Autonomic DBMSs", Proceedings of the 2nd International Workshop on Self-Managing Database Systems (SMDB 2007 to meet its Service Level Objectives (SLOs). It is a challenge to adapt multiple workloads with complex scheduler that performs workload adaptation in a DBMS, as the test bed to prove the effectiveness

199

Proceedings of the International Workshop on Adaptation,  

E-Print Network [OSTI]

Proceedings of the 1st International Workshop on Adaptation, Personalization and REcommendation. Carrero3 1 Universidad Autónoma de Madrid, Spain {ivan.cantador, david.vallet}@uam.es 2 Yahoo! Research.carrero}@uem.es #12;#12;Preface The 1st International Workshop on Adaptation, Personalization and REcommendation

Cantador, Iván

200

Adaptive Web Sites: Automatically Synthesizing Web Pages  

E-Print Network [OSTI]

Adaptive Web Sites: Automatically Synthesizing Web Pages Mike Perkowitz Oren Etzioni Department interfaces Abstract The creation of a complex web site is a thorny problem in user interface design. In IJCAI '97, we challenged the AI community to address this problem by creating adaptive web sites: sites

Etzioni, Oren

Note: This page contains sample records for the topic "radiation-induced adaptive responses" 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.


201

ORIGINAL ARTICLE Mitigation needs adaptation: Tropical forestry  

E-Print Network [OSTI]

ORIGINAL ARTICLE Mitigation needs adaptation: Tropical forestry and climate change Manuel R adapt to this change. This paper discusses how tropical forestry practices can contribute to maintaining Forestry Research, P.O. Box 6596 JKPWB, Jakarta 10065, Indonesia e-mail: m.guariguata@cgiar.org J. P

Paris-Sud XI, Université de

202

General Adaptive Replacement Policies Yannis Smaragdakis  

E-Print Network [OSTI]

General Adaptive Replacement Policies Yannis Smaragdakis College of Computing Georgia Institute of Technology yannis@cc.gatech.edu ABSTRACT We propose a general scheme for creating adaptive replace- ment any two existing replacement policies so that the resulting policy provably can never perform worse

Smaragdakis, Yannis

203

Adaptive Port Reduction in Static Condensation  

E-Print Network [OSTI]

Adaptive Port Reduction in Static Condensation JL Eftang DBP Huynh DJ Knezevic EM Rønquist a framework for adaptive reduction of the degrees of freedom associated with ports in static condensation (SC reduction for the interior of a component with model order reduction on the ports in order to rapidly

Rønquist, Einar M.

204

E-Print Network 3.0 - adaptive information processing Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

user (adaptable... .1 Adaptation and Adaptivity Even if ... Source: Oppermann, Reinhard - Fraunhofer-Institute for Applied Information Technology & Fachbereich Informatik,...

205

Creating Adaptive Feedback designed for Improving Data Entry Accuracy  

E-Print Network [OSTI]

Abstract- Data quality is a critical problem in modern databases. Data-entry forms present the first and arguably best opportunity for detecting and mitigating errors, but there has been little research into automatic methods for improving data quality at entry time. In this paper, we propose USHER, an end-to-end system for form design, entry, and data quality assurance. Using previous form submissions, USHER learns a probabilistic model over the questions of the form. USHER then applies this model at every step of the data-entry process to improve data quality. Before entry, it induces a form layout that captures the most important data values of a form instance as quickly as possible and reduces the complexity of error-prone questions. During entry, it dynamically adapts the form to the values being entered by providing real-time interface feedback, reasking questions with dubious responses, and simplifying questions by reformulating them. After entry, it revisits question responses that it deems likely to have been entered incorrectly by reasking the question or a reformulation thereof. We evaluate these components of USHER using two real-world data sets. Our results demonstrate that USHER can improve data quality considerably at a reduced cost when compared to current practice. Index Terms- Data quality, data entry, form design, adaptive form. O I.

P. Jaya Prakash; B. Venkateswarlu; S. Abdul Jeelan; Assistant Professors; Andhra Pradesh-india

206

E-Print Network 3.0 - adaptive systems theory Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

systems theory Page: << < 1 2 3 4 5 > >> 1 From Adaptive Hypermedia to the Adaptive Web Systems Summary: 1 From Adaptive Hypermedia to the Adaptive Web Systems Peter...

207

Using the Heat-Shock Response To Discover Anticancer Compounds that Target Protein Homeostasis  

E-Print Network [OSTI]

Unlike normal tissues, cancers experience profound alterations in protein homeostasis. Powerful innate adaptive mechanisms, especially the transcriptional response regulated by Heat Shock Factor 1 (HSF1), are activated in ...

Santagata, Sandro

208

Rights-based evaluation of government responses to a given 'natural' disaster : Katrina as case study  

E-Print Network [OSTI]

Disaster impacts human mobility and a rights-based approach to disaster response is needed to protect the human rights of those who seek migration as an adaptation strategy. This paper deals with returning to a place after ...

Haeffner, Melissa (Melissa Ann)

2010-01-01T23:59:59.000Z

209

Dscam gene expression in invertebrate immunity : alternative splicing in response to diverse pathogens  

E-Print Network [OSTI]

Invertebrates show enhanced immunity and even specific primed immunity in response to repeat infections, analogous to vertebrate adaptive immunity. Little is known of the mechanism for this phenomenon, or which molecules ...

Smith, Paul Hugh

2012-11-30T23:59:59.000Z

210

Probing young massive clusters with laser guide star adaptive optics  

E-Print Network [OSTI]

laser guide star adaptive optics Nate McCrady Received: 10laser guide star adaptive optics (LGS/AO) on the 10 m Keckof 4 Mpc. Our adaptive optics work is motivated by three

McCrady, Nate

2009-01-01T23:59:59.000Z

211

Pacific Adaptation Strategy Assistance Program Dynamical Seasonal Forecasting  

E-Print Network [OSTI]

Pacific Adaptation Strategy Assistance Program Dynamical Seasonal Forecasting Seasonal Prediction · POAMA · Issues for future Outline #12;Pacific Adaptation Strategy Assistance Program Major source Adaptation Strategy Assistance Program El Nino Mean State · Easterlies westward surface current upwelling

Lim, Eun-pa

212

Demand Response and Open Automated Demand Response  

E-Print Network [OSTI]

LBNL-3047E Demand Response and Open Automated Demand Response Opportunities for Data Centers G described in this report was coordinated by the Demand Response Research Center and funded by the California. Demand Response and Open Automated Demand Response Opportunities for Data Centers. California Energy

213

National Adaptation Forum Webinar Series: Out of Town, Not Out...  

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

Adaptation Forum Webinar Series: Out of Town, Not Out of Trouble: Small Agriculture and Indigenous Communities National Adaptation Forum Webinar Series: Out of Town, Not Out of...

214

Farming in a Changing Climate: Agricultural Adaptation in Canada  

E-Print Network [OSTI]

Agricultural Adaptation in Canada Ellen Wall, Barry Smit,Agricultural Adaptation in Canada. Vancouver, BC: Universitythe agri-food sector in Canada, the insights provided are so

Jain, Varinder

2010-01-01T23:59:59.000Z

215

adaptive signal processing: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

3 INTERNATIONAL JOURNAL OF ADAPTIVE CONTROL AND SIGNAL PROCESSING Int. J. Adapt. Control Signal Process. (in press) Engineering Websites Summary: predictive control 1....

216

adaptive predictive control: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

applied to analyze the transient Antsaklis, Panos 44 ADAPTIVE ROBUST TRACKING CONTROL OF PRESSURE Engineering Websites Summary: 1---- 1 ADAPTIVE ROBUST TRACKING CONTROL OF...

217

India-Vulnerability Assessment and Enhancing Adaptive Capacities...  

Open Energy Info (EERE)

Adaptive Capacities to Climate Change Jump to: navigation, search Name India-Vulnerability Assessment and Enhancing Adaptive Capacities to Climate Change AgencyCompany...

218

Software Adaptation Patterns for Service-Oriented Architectures .  

E-Print Network [OSTI]

??This thesis describes the concept of software adaptation patterns and how they can be used in software adaptation of service-oriented architectures. The patterns are described (more)

Hashimoto, Koji

2010-01-01T23:59:59.000Z

219

adaptive interactive technologies: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Shock-induced combustion Fluid-structure interaction Implementation Parallel Adaptive Cartesian Upwind Mathematics Websites Summary: Finite volume methods Adaptive mesh refinement...

220

Development of an adaptive fuzzy logic controller for HVAC system.  

E-Print Network [OSTI]

??An adaptive approach to control a cooling coil chilled water valve operation, called adaptive fuzzy logic control (AFLC), is developed and validated in this study. (more)

Navale, Rahul Laxman

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "radiation-induced adaptive responses" 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.


221

adaptive particle swarm: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Last Page Topic Index 1 An Adaptive Learning Particle Swarm Optimizer for Function Optimization Computer Technologies and Information Sciences Websites Summary: An Adaptive...

222

adaptive intrusion detection: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Last Page Topic Index 1 Adaptive Model Generation for Intrusion Detection Systems Computer Technologies and Information Sciences Websites Summary: Adaptive Model Generation for...

223

CONSULTATION RESPONSE Wellcome Trust response to Workforce  

E-Print Network [OSTI]

account of in workforce planning. The importance of integrating academic training with clinical trainingCONSULTATION RESPONSE Wellcome Trust response to Workforce of the Healthcare Science Workforce Modernising Scientific Careers: The Next Steps Response by the Wellcome Trust

Rambaut, Andrew

224

accidental radiation-induced hematopoietic: Topics by E-print...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

solar and atmospheric neutrino oscillation, some of them can also induce neutrinoless double beta decay and mu- -- e+ conversion in nuclei large enough to be potentially...

225

acute radiation-induced proctosigmoiditis: Topics by E-print...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

solar and atmospheric neutrino oscillation, some of them can also induce neutrinoless double beta decay and mu- -- e+ conversion in nuclei large enough to be potentially...

226

Radiation-induced chromosomal aberrations at different dose-rates  

E-Print Network [OSTI]

of breakage. These breakages may be due to the physiochemical changes affecting the nucleic acid structure within one or more of the chromatin strands; this is in accordance with the "target theory. " Evans (21) states that after the initial breakage.... The somatic mutation theory purposes that ageing is caused by a gradual accumulation of mutations. Curtis has shown that chroaosomal aberrations of the liver cells increase steadily with age (19). Ionizing radiaticns shorten the lifespan and also increase...

McDaniel, Jackson Dean

2012-06-07T23:59:59.000Z

227

Radiation-Induced Radicals in Polyurea-Crosslinked Silica Aerogel.  

E-Print Network [OSTI]

?? Free radicals are atoms or molecules with an odd number of electrons in an outer shell. Since electrons typically occur in pairs, this leaves (more)

Walters, Benjamin Michael

2014-01-01T23:59:59.000Z

228

Radiation induced by relativistic beams passing over a diffraction grating  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive Solar HomePromising Science for1 20115,Performance QualityRadiation August

229

Adaptive Mesh Refinement and Relativistic MHD  

E-Print Network [OSTI]

We solve the general relativistic magnetohydrodynamics equations using distributed parallel adaptive mesh refinement. We discuss strong scaling tests of the code, and present evolutions of Michel accretion and a TOV star.

David Neilsen; Eric W. Hirschmann; Matthew Anderson; Steven L. Liebling

2007-02-06T23:59:59.000Z

230

Adaptive control of a generic hypersonic vehicle  

E-Print Network [OSTI]

This thesis presents a an adaptive augmented, gain-scheduled baseline LQR-PI controller applied to the Road Runner six-degree-of-freedom generic hypersonic vehicle model. Uncertainty in control effectiveness, longitudinal ...

Wiese, Daniel Philip

2013-01-01T23:59:59.000Z

231

Adaptive Reliability Analysis of Excavation Problems  

E-Print Network [OSTI]

. This analysis couples the adaptive design capabilities of the observational method with updated reliability indices, to be used in risk-based design decisions. A probabilistic framework is developed to predict three-dimensional deformation profiles due...

Park, Jun Kyung

2012-10-19T23:59:59.000Z

232

Scalable Adaptive Multilevel Solvers for Multiphysics Problems  

SciTech Connect (OSTI)

In this project, we investigated adaptive, parallel, and multilevel methods for numerical modeling of various real-world applications, including Magnetohydrodynamics (MHD), complex fluids, Electromagnetism, Navier-Stokes equations, and reservoir simulation. First, we have designed improved mathematical models and numerical discretizaitons for viscoelastic fluids and MHD. Second, we have derived new a posteriori error estimators and extended the applicability of adaptivity to various problems. Third, we have developed multilevel solvers for solving scalar partial differential equations (PDEs) as well as coupled systems of PDEs, especially on unstructured grids. Moreover, we have integrated the study between adaptive method and multilevel methods, and made significant efforts and advances in adaptive multilevel methods of the multi-physics problems.

Xu, Jinchao

2014-12-01T23:59:59.000Z

233

Optimization Online - Multistage Adaptive Robust Optimization for ...  

E-Print Network [OSTI]

Sep 5, 2014 ... ... with the increasing penetration of wind and solar power generation has ... Keywords: Electric energy systems, multistage robust optimization, ... Multistage Adaptive Robust Optimization for the Unit Commitment Problem.

Alvaro Lorca

2014-09-05T23:59:59.000Z

234

Anisotropic Grid Adaptation for Multiple Aerodynamic Outputs  

E-Print Network [OSTI]

Anisotropic gridadaptive strategies are presented for viscous flow simulations in which the accurate prediction of multiple aerodynamic outputs (such as the lift, drag, and moment coefficients) is required from a single ...

Venditti, David A.

235

Marginalized Monitoring: Adaptively Managing Urban Stormwater  

E-Print Network [OSTI]

environmental assessment, 28 Superfund decisionmaking, 29 Endangered Species Act decisionmaking, 30 and water management.Environmental Impacts Under Florida Water Law: From Water Wars Towards Adaptive Management ,water infrastructure problems. And yet, the environmental management

Scanlan, Melissa K; Tai, Stephanie

2013-01-01T23:59:59.000Z

236

Fast Adaptive Silhouette Area based Template Matching  

E-Print Network [OSTI]

Fast Adaptive Silhouette Area based Template Matching Daniel Mohr and Gabriel Zachmann If (Technical Informatics and Computer Systems) Prof. Dr. Gabriel Zachmann (Computer Graphics) Prof. Dr Template Matching Daniel Mohr and Gabriel Zachmann Clausthal University of Technology, Department

Zachmann, Gabriel

237

A Logical Characterization of Adaptive Educational Hypermedia  

E-Print Network [OSTI]

reference models for adaptive hypermedia, e.g. the AHAM Reference Model [4], or the Munich Reference Model [20]. Both, the AHAM and Munich Reference Model, extend the Dexter Hypertext Model [16], and pro- vide

Henze, Nicola

238

Adaptive Importance Sampling via Stochastic Convex Programming  

E-Print Network [OSTI]

Adaptive Importance Sampling via Stochastic Convex Programming Ernest K. Ryu1 and Stephen P. Boyd1 Abstract We show that the variance of the Monte Carlo estimator that is importance sam- pled from

239

Developmental Plasticity Links Local Adaptation and Evolutionary  

E-Print Network [OSTI]

Developmental Plasticity Links Local Adaptation and Evolutionary Diversification in Foraging, University of Arizona, Tucson, Arizona Developmental plasticity is thought to reconcile the constraining role morphology into adulthood, providing an opportunity to directly examine the links between plasticity of bone

Badyaev, Alex

240

Adaptive control for optimizing microalgae production  

E-Print Network [OSTI]

Adaptive control for optimizing microalgae production Francis Mairet Rafael Mu for light-limited microalgae culture. This controller regulates the light absorption factor, defined productivity under day-night cycles. Keywords: Nonlinear controller, Microalgae, Optimization, Biomass

Paris-Sud XI, Universit de

Note: This page contains sample records for the topic "radiation-induced adaptive responses" 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

Exponential convergence with adaptive Monte Carlo  

SciTech Connect (OSTI)

For over a decade, it has been known that exponential convergence on discrete transport problems was possible using adaptive Monte Carlo techniques. Now, exponential convergence has been empirically demonstrated on a spatially continuous problem.

Booth, T.E.

1997-11-01T23:59:59.000Z

242

Challenges of Adapting to a Changing Climate  

E-Print Network [OSTI]

of Global Climate Change on Agriculture: An Interpretiveon U.S. Agriculture, in THE IMPACT OF CLIMATE CHANGE ON THEclimate change and the potential roles for adaptation are more severe for ecosystems than they are for managed systems like agriculture.

Hurd, Brian H.

2008-01-01T23:59:59.000Z

243

Robust adaptive control of switched systems  

E-Print Network [OSTI]

In this thesis, robust adaptive controllers are developed for classes of switched nonlinear systems. Switched systems are those governed by differential equations, which undergo vector field switching due to sudden changes ...

El-Rifai, Khalid, 1979-

2007-01-01T23:59:59.000Z

244

Convert! : the adaptive reuse of churches  

E-Print Network [OSTI]

This thesis examines the phenomenon of vacated churches and analyzes the major issues underlying their adaptive reuse in order to help promulgate an awareness of the range of successful strategies and solutions that are ...

Kiley, Christopher John, 1972-

2004-01-01T23:59:59.000Z

245

Climate Change: High Water Impacts and Adaptation  

E-Print Network [OSTI]

Climate Change: High Water Impacts and Adaptation David S. Liebl and Kenneth W. Potter Co of global climate change­ WICCI Stormwater Working Group #12;Projected Climate Change 200-2100 What Global

Sheridan, Jennifer

246

Adaptive sampling in autonomous marine sensor networks  

E-Print Network [OSTI]

In this thesis, an innovative architecture for real-time adaptive and cooperative control of autonomous sensor platforms in a marine sensor network is described in the context of the autonomous oceanographic network scenario. ...

Eickstedt, Donald Patrick

2006-01-01T23:59:59.000Z

247

Adaptive gain improves reactor control  

SciTech Connect (OSTI)

An interesting application of the modern control theory technique called adaptive control is presently in use on a process located at a plant in the Standard Oil Co. (Ind.) system. The results of this application are: first, the transformation of an uncontrollable process to a controllable one; and, second, a significant economic savings to the corporation. It also shows that a detailed analysis of the mechanical, chemical and control systems can provide both the basis for revising an existing control system and some of the reasons why that system is inadequate. The contrast between classical and modern control theories is seen in four major areas. In classical systems, the controller manipulates the error to calculate its output. The error is subjected to a limited number of analog computing functions such as multiplication by a constant and integration. Each controller has one specific strategy--to hold the measured variable at the setpoint. And each controller controls only one variable, independent of all others. In a modern system, the controller can manipulate many different variables in addition to the error to compute its output. Its computing power is unlimited in a practical sense. It can do all classical computations plus many others, including a table look-up. The controller can independently change its strategy as a function of time or the condition of the process. It can also control many variables at one time to accomplish a complex objective. The implementation of a modern control theory project requires a good understanding of the dynamic, as well as the steady-state character of the process. As you can see we are limited only by our understanding of the process, our imagination, and the economics of the situation.

Whatley, M.J.; Pott, D.C.

1984-05-01T23:59:59.000Z

248

Fully Adaptive AMG Scott MacLachlan  

E-Print Network [OSTI]

" Ah "-1 ik ff Energy measure: Let G (i) j = (Ah )-1 ij , Sij = G(i) - G (i) j e(j) Ah G(i) Ah Fully, Sij? Apply (localized) relaxation to Ah G(i) = e(i) Fully Adaptive AMG ­ p.11 #12;Approximating Sij to Ah G(i) = e(i) Weighted Jacobi, 1 step: Fully Adaptive AMG ­ p.11 #12;Approximating Sij Can

MacLachlan, Scott

249

The Durham ELT adaptive optics simulation platform  

E-Print Network [OSTI]

Adaptive optics systems are essential on all large telescopes where image quality is important. These are complex systems with many design parameters requiring optimisation before good performance can be achieved. The simulation of adaptive optics systems is therefore necessary to categorise the expected performance. This paper describes an adaptive optics simulation platform, developed at Durham University, which can be used to simulate adaptive optics systems on the largest proposed future extremely large telescopes (ELTs) as well as current systems. This platform is modular, object oriented and has the benefit of hardware application acceleration which can be used to improve the simulation performance, essential for ensuring that the run time of a given simulation is acceptable. The simulation platform described here can be highly parallelised using parallelisation techniques suited for adaptive optics simulation, whilst still offering the user complete control while the simulation is running. Results from the simulation of a ground layer adaptive optics system are provided as an example to demonstrate the flexibility of this simulation platform.

Alastair Basden; Timothy Butterley; Richard Myers; Richard Wilson

2006-11-09T23:59:59.000Z

250

PhotoPhoto--and Radiation Induced Processesand Radiation Induced Processes ** Research Focus in PhotochemistryResearch Focus in Photochemistry  

E-Print Network [OSTI]

--term storage of solar energy as fuels or valuable chemicalsterm storage of solar energy as fuels or valuable

251

DCS1800/WCDMA ADAPTIVE VOLTAGE-CONTROLLED OSCILLATOR  

E-Print Network [OSTI]

DCS1800/WCDMA ADAPTIVE VOLTAGE-CONTROLLED OSCILLATOR Aleksandar Tasi, Wouter A. Serdijn and John R, an adaptive 2G/3G voltage-controlled oscillator (VCO) is described in this paper. For the DCS1800 operation with this reasoning, an adaptive 2G/3G voltage- controlled oscillator, meant for a dual-standard adaptive front

Serdijn, Wouter A.

252

IEEE INFOCOM 2001 1 Pricing Network Resources for Adaptive  

E-Print Network [OSTI]

, and provides a natural and equitable incentive for applications to adapt their service contract according

Wang, Xin

253

Adaptation to water scarcity in glacier-dependent towns of the Indian Himalayas : impacts, adaptive responses, barriers, and solutions  

E-Print Network [OSTI]

Among the existing and projected impacts of climate change, impacts on water resources are expected to exacerbate the current and future threat of global water scarcity. Glacier-dependent societies are especially vulnerable ...

Sudhalkar, Amruta Anand

2010-01-01T23:59:59.000Z

254

Control apparatus and method responsive to a changing stimulus  

SciTech Connect (OSTI)

This patent describes a control apparatus responsive to a changing stimulus. It comprises: means for producing a first response to a changing stimulus; means for producing a second response to the stimulus wherein the second response is of the same type of response as the first response but wherein the first and second responses are of different relative varying degree so that the second response is initially masked by the first response, but so that the second response ultimately surpasses the first response; and means for producing a control signal in response to the second response surpassing the first response. This patent also describes an apparatus for controlling the opening of a valve, disposed in a tubing string in a well, during a drill stem test wherein the valve is opened during a flow period of the test and closed during a shut-in period of the test. It comprises: in hosing adapted to be disposed in the tubing string; a first slidable member disposed in the housing; a second slidable member disposed in the housing; first biasing means, disposed in the housing, for biasing the first slidable member within the housing during a flow period of a drill stem test.

Surjaatmadja, J.B.; White, B.W.

1991-10-15T23:59:59.000Z

255

Adaptive Plasticity and Plasticity as an Adaptation: A Selective Review of Plasticity in Animal Morphology and Life History  

E-Print Network [OSTI]

Adaptive Plasticity and Plasticity as an Adaptation: A Selective Review of Plasticity in Animal wide-ranging. All key REVIEW references should be cited. A summary is required. Adaptive plasticity and plasticity as an adaptation: a selective review of plasticity in animal morphology and life history Karl

Gotthard, Karl

256

EcoAdapt Working Paper Series N1 Adaptation to climate change for local development  

E-Print Network [OSTI]

1 EcoAdapt Working Paper Series N°1 Adaptation to climate change for local development Análisis in terms of employment, water situation and land use, at a quantitative and qualitative level, in three and summer pastures, due to the geographic and climatic conditions. hal-01059368,version1-30Aug2014 #12

Boyer, Edmond

257

Integrating Demand into the U.S. Electric Power System: Technical, Economic, and Regulatory Frameworks for Responsive Load  

E-Print Network [OSTI]

for Responsive/Adaptive Load by Jason W. Black Massachusetts Institute of Technology Submitted to the Engineering integration of demand response. Integrating demand into the US electricity system will allow the development, and market issues to determine a system structure that provides incentives for demand response. An integrated

de Weck, Olivier L.

258

Gain scheduling adaptive control strategies for HVDC systems to accommodate large disturbances  

SciTech Connect (OSTI)

Techniques have been developed to permit the response of the controls for dc transmission systems to adapt to large system changes. A gain scheduling approach tunes the control as an on-line function of the effective short-circuit ratio and contingency indicators. The method has been tested by digital simulation, based on EMTP, of a back-to-back dc system. It has been found to be robust and control performance has been enhanced.

Reeve, J.; Sultan, M. (Univ. of Waterloo, Ontario (Canada))

1994-02-01T23:59:59.000Z

259

Adaptive scapula bone remodeling computational simulation: Relevance to regenerative medicine  

SciTech Connect (OSTI)

Shoulder arthroplasty success has been attributed to many factors including, bone quality, soft tissue balancing, surgeon experience, and implant design. Improved long-term success is primarily limited by glenoid implant loosening. Prosthesis design examines materials and shape and determines whether the design should withstand a lifetime of use. Finite element (FE) analyses have been extensively used to study stresses and strains produced in implants and bone. However, these static analyses only measure a moment in time and not the adaptive response to the altered environment produced by the therapeutic intervention. Computational analyses that integrate remodeling rules predict how bone will respond over time. Recent work has shown that subject-specific two- and three dimensional adaptive bone remodeling models are feasible and valid. Feasibility and validation were achieved computationally, simulating bone remodeling using an intact human scapula, initially resetting the scapular bone material properties to be uniform, numerically simulating sequential loading, and comparing the bone remodeling simulation results to the actual scapulas material properties. Three-dimensional scapula FE bone model was created using volumetric computed tomography images. Muscle and joint load and boundary conditions were applied based on values reported in the literature. Internal bone remodeling was based on element strain-energy density. Initially, all bone elements were assigned a homogeneous density. All loads were applied for 10 iterations. After every iteration, each bone elements remodeling stimulus was compared to its corresponding reference stimulus and its material properties modified. The simulation achieved convergence. At the end of the simulation the predicted and actual specimen bone apparent density were plotted and compared. Location of high and low predicted bone density was comparable to the actual specimen. High predicted bone density was greater than actual specimen. Low predicted bone density was lower than actual specimen. Differences were probably due to applied muscle and joint reaction loads, boundary conditions, and values of constants used. Work is underway to study this. Nonetheless, the results demonstrate three dimensional bone remodeling simulation validity and potential. Such adaptive predictions take physiological bone remodeling simulations one step closer to reality. Computational analyses are needed that integrate biological remodeling rules and predict how bone will respond over time. We expect the combination of computational static stress analyses together with adaptive bone remodeling simulations to become effective tools for regenerative medicine research.

Sharma, Gulshan B., E-mail: gbsharma@ucalgary.ca [Emory University, Department of Radiology and Imaging Sciences, Spine and Orthopaedic Center, Atlanta, Georgia 30329 (United States); University of Pittsburgh, Swanson School of Engineering, Department of Bioengineering, Pittsburgh, Pennsylvania 15213 (United States); University of Calgary, Schulich School of Engineering, Department of Mechanical and Manufacturing Engineering, Calgary, Alberta T2N 1N4 (Canada); Robertson, Douglas D., E-mail: douglas.d.robertson@emory.edu [Emory University, Department of Radiology and Imaging Sciences, Spine and Orthopaedic Center, Atlanta, Georgia 30329 (United States); University of Pittsburgh, Swanson School of Engineering, Department of Bioengineering, Pittsburgh, Pennsylvania 15213 (United States)

2013-07-01T23:59:59.000Z

260

Load attenuating passively adaptive wind turbine blade  

DOE Patents [OSTI]

A method and apparatus for improving wind turbine performance by alleviating loads and controlling the rotor. The invention employs the use of a passively adaptive blade that senses the wind velocity or rotational speed, and accordingly modifies its aerodynamic configuration. The invention exploits the load mitigation prospects of a blade that twists toward feather as it bends. The invention includes passively adaptive wind turbine rotors or blades with currently preferred power control features. The apparatus is a composite fiber horizontal axis wind-turbine blade, in which a substantial majority of fibers in the blade skin are inclined at angles of between 15 and 30 degrees to the axis of the blade, to produces passive adaptive aeroelastic tailoring (bend-twist coupling) to alleviate loading without unduly jeopardizing performance.

Veers, Paul S. (Albuquerque, NM); Lobitz, Donald W. (Albuquerque, NM)

2003-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "radiation-induced adaptive responses" 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

Load attenuating passively adaptive wind turbine blade  

DOE Patents [OSTI]

A method and apparatus for improving wind turbine performance by alleviating loads and controlling the rotor. The invention employs the use of a passively adaptive blade that senses the wind velocity or rotational speed, and accordingly modifies its aerodynamic configuration. The invention exploits the load mitigation prospects of a blade that twists toward feather as it bends. The invention includes passively adaptive wind turbine rotors or blades with currently preferred power control features. The apparatus is a composite fiber horizontal axis wind-turbine blade, in which a substantial majority of fibers in the blade skin are inclined at angles of between 15 and 30 degrees to the axis of the blade, to produces passive adaptive aeroelastic tailoring (bend-twist coupling) to alleviate loading without unduly jeopardizing performance.

Veers, Paul S.; Lobitz, Donald W.

2003-01-07T23:59:59.000Z

262

Evidence of molecular adaptation to extreme environments and applicability to space environments  

E-Print Network [OSTI]

This is initial study of a gene signatures responsible for adapting microscopic life to the life in extreme Earth environments. We present a results on ID of the clusters of COGs common to several hyperthermophiles and exclusion of those common to a mesophile: E.coli.K12, will yield a group of proteins possibly involved in adaptation to life under extreme T. Methanogens stand out as the only group of organisms that have species capable of growth at 0C (M.frigidum and M.burtonii) and 110C (M.kandleri). Not all the components of heat adaptation can be attributed to novel genes, the chaperones known as heat shock proteins stabilize the enzymes under elevated temperature. Highly conserved chaperons found in bacteria and eukaryots are not present in hyperthermophilic Archea, rather, they have a unique chaperone TF55. Our aim is to use software which we specifically developed for extremophile genome comparative analyses in order to search for additional novel genes involved in hyperthermophile adaptation. The following hyperthermophile genomes incorporated in our software were used for these studies: M.jannaschii, M.kandleri, A.fulgidus and 3 species of Pyrococcus. Common genes were annotated and grouped according to their roles in cellular processes when information was available and proteins not previously implicated in the heat-adaptation of hyperthermophiles were identified. Additional experimental data is needed in order to learn more about these proteins. To address a non-gene based components of thermal adaptation, all sequenced extremophiles were analysed for their GC contents and aminoacid hydrophobicity. We develop a prediction model for optimal growth temperature.

M. D. Filipovic; S. Ognjanovic; M. Ognjanovic

2008-04-29T23:59:59.000Z

263

The Building Adaptive Re-Use  

E-Print Network [OSTI]

81 The Building 7.0 #12;82 Adaptive Re-Use 7.1 7.1.1 Retaining the Ruskin Building's Facades building fabric. The need for a fully accessible and environmentally sustainable building led the team to a solution that requires the full reconstruction of the Ruskin Building, save its primary facades

Flynn, E. Victor

264

Relativistic MHD with Adaptive Mesh Refinement  

E-Print Network [OSTI]

This paper presents a new computer code to solve the general relativistic magnetohydrodynamics (GRMHD) equations using distributed parallel adaptive mesh refinement (AMR). The fluid equations are solved using a finite difference Convex ENO method (CENO) in 3+1 dimensions, and the AMR is Berger-Oliger. Hyperbolic divergence cleaning is used to control the $\

Matthew Anderson; Eric Hirschmann; Steven L. Liebling; David Neilsen

2006-10-11T23:59:59.000Z

265

Adaptive Scheduling Algorithms for Planet Searches  

E-Print Network [OSTI]

High-precision radial velocity planet searches have surveyed over ~2000 nearby stars and detected over ~200 planets. While these same stars likely harbor many additional planets, they will become increasingly challenging to detect, as they tend to have relatively small masses and/or relatively long orbital periods. Therefore, observers are increasing the precision of their observations, continuing to monitor stars over decade timescales, and also preparing to survey thousands more stars. Given the considerable amounts of telescope time required for such observing programs, it is important use the available resources as efficiently as possible. Previous studies have found that a wide range of predetermined scheduling algorithms result in planet searches with similar sensitivities. We have developed adaptive scheduling algorithms which have a solid basis in Bayesian inference and information theory and also are computationally feasible for modern planet searches. We have performed Monte Carlo simulations of plausible planet searches to test the power of adaptive scheduling algorithms. Our simulations demonstrate that planet searches performed with adaptive scheduling algorithms can simultaneously detect more planets, detect less massive planets, and measure orbital parameters more accurately than comparable surveys using a non-adaptive scheduling algorithm. We expect that these techniques will be particularly valuable for the N2K radial velocity planet search for short-period planets as well as future astrometric planet searches with the Space Interferometry Mission which aim to detect terrestrial mass planets.

Eric B. Ford

2007-12-17T23:59:59.000Z

266

Reservation Price Estimation by Adaptive Conjoint Analysis  

E-Print Network [OSTI]

Reservation Price Estimation by Adaptive Conjoint Analysis Christoph Breidert1 , Michael Hahsler1 applied the eco- nomic definition of reservation price in combination with a conjoint study on product pricing. In this paper we present a novel approach to estimate the economic reser- vation price using

Schmidt-Thieme, Lars

267

CLIMATE CHANGE ADAPTATIONS FOR LOCAL WATER MANAGEMENT  

E-Print Network [OSTI]

CLIMATE CHANGE ADAPTATIONS FOR LOCAL WATER MANAGEMENT IN THE SAN FRANCISCO BAY AREA A White Paper from the California Energy Commission's California Climate Change Center JULY 2012 CEC Climate change will affect both sea level and the temporal and spatial distribution of runoff

268

Adaptive Personalisation for Researcher-Independent  

E-Print Network [OSTI]

Adaptive Personalisation for Researcher-Independent Brain-Body Interface Usage Abstract In this case study, we report what we believe to be the first prolonged in-situ use of a brain-body interface for rehabilitation of individuals with severe neurological impairment due to traumatic brain injury

Boetticher, Gary D.

269

Adaptive, full-spectrum solar energy system  

DOE Patents [OSTI]

An adaptive full spectrum solar energy system having at least one hybrid solar concentrator, at least one hybrid luminaire, at least one hybrid photobioreactor, and a light distribution system operably connected to each hybrid solar concentrator, each hybrid luminaire, and each hybrid photobioreactor. A lighting control system operates each component.

Muhs, Jeffrey D.; Earl, Dennis D.

2003-08-05T23:59:59.000Z

270

Adaptive Training for Large Vocabulary Continuous  

E-Print Network [OSTI]

Adaptive Training for Large Vocabulary Continuous Speech Recognition Kai Yu Hughes Hall College for the degree of Doctor of Philosophy #12;ii Summary In recent years, there has been a trend towards training is to train hidden Markov models (HMMs) on the whole data set as if all data comes from a single acoustic

Hain, Thomas

271

Semantic Web Technologies for the Adaptive Web  

E-Print Network [OSTI]

23 Semantic Web Technologies for the Adaptive Web Peter Dolog1 and Wolfgang Nejdl2 1 Department.de Abstract. Ontologies and reasoning are the key terms brought into focus by the semantic web community. Formal representation of ontologies in a common data model on the web can be taken as a foundation

Nejdl, Wolfgang

272

An Infrastructure for Adaptive Dynamic Optimization  

E-Print Network [OSTI]

An Infrastructure for Adaptive Dynamic Optimization Derek Bruening, Timothy Garnett, and Saman,timothyg,saman}@lcs.mit.edu Abstract Dynamic optimization is emerging as a promising ap- proach to overcome many of the obstacles static optimizations, there are very few for developing dynamic optimizations. We present a framework

Amarasinghe, Saman

273

Grid adaptation for multiscale plasma simulations  

E-Print Network [OSTI]

Grid adaptation for multiscale plasma simulations Gian Luca Delzanno Los Alamos National Laboratory In collaboration with L. Chacon and J.M. Finn #12;delzanno@lanl.gov Outline Introduction and motivation Grid tests New directions Conclusions #12;delzanno@lanl.gov Outline Introduction and motivation Grid

Ito, Atsushi

274

ADAPTIVE ROBUST TRACKING CONTROL OF PRESSURE  

E-Print Network [OSTI]

accuracy of pressure trajectory in the chamber when the pneumatic cylinder is moving. Off-line fitting, it is necessary to utilize the adaptive model compensation for improving the tracking accuracy of pressure and attenuation in pneumatic lines, valve dynamics, flow nonlinearities through the valve orifice, piston friction

Yao, Bin

275

Provably Efficient Two-Level Adaptive Scheduling  

E-Print Network [OSTI]

processor reallocation, our schedulers provide control over the scheduling overhead and ensure effectiveProvably Efficient Two-Level Adaptive Scheduling Yuxiong He1 , Wen-Jing Hsu1 , and Charles E. Multiprocessor scheduling in a shared multiprogramming en- vironment can be structured in two levels, where

Feitelson, Dror

276

Climate Change Basics: Science, Adaptation, & Mitigation  

E-Print Network [OSTI]

Science Global atmospheric concentrations of carbon dioxide, methane and nitrous oxide have increased from ice cores spanning many thousands of years. The global increases in carbon dioxide concentrationClimate Change Basics: Science, Adaptation, & Mitigation with a Family Forest Perspective Baylor

Fox-Kemper, Baylor

277

An Enabling Study of Diesel Low-Temperautre Combustion via Adaptive...  

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

An Enabling Study of Diesel Low-Temperautre Combustion via Adaptive Control An Enabling Study of Diesel Low-Temperautre Combustion via Adaptive Control Adaptive control strategies...

278

E-Print Network 3.0 - adaptive management department Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

for: adaptive management department Page: << < 1 2 3 4 5 > >> 1 Regional Water Management: Adapting to Uncertain Water Summary: Regional Water Management: Adapting to...

279

E-Print Network 3.0 - adaptive methods final Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

mechanisms. Finally the actors in the process of adaptation will be discussed like the user (adaptable... adaptation methods and tools that are under the control of the user...

280

E-Print Network 3.0 - adaptive specialization conditional Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

conditional Page: << < 1 2 3 4 5 > >> 1 From Adaptive Hypermedia to the Adaptive Web Systems Summary: Adaptive presentation techniques Conditional text filtering - ITEM...

Note: This page contains sample records for the topic "radiation-induced adaptive responses" 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.


281

E-Print Network 3.0 - adaptive direct search Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

direct search Page: << < 1 2 3 4 5 > >> 1 From Adaptive Hypermedia to the Adaptive Web Systems Summary: Evaluation of Adaptive Link Sorting HYPERFLEX: IR System -...

282

E-Print Network 3.0 - adaptive fe-be coupling Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Modeling and Simulation of the CORBA Portable Object Adapter Summary: the Coupled Model ports: X<adapter, activate, findpoa()>. "adapter", "activate" are parameter ports while......

283

E-Print Network 3.0 - adaptive seamless design Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

(VTP) to adapt video... need to be resolved: 1) seamless mobility across het- erogeneous networks, 2) application adaptation... incorporate both seamless handoff and adaptive ......

284

Adaptation, Speciation, and Convergence: A Hierarchical Analysis of Adaptive Radiation in Caribbean Anolis Lizards  

E-Print Network [OSTI]

Caribbean Anolis lizards are a classic case of adaptive radiation, repeated four times across islands of the Greater Antilles. On each island, very similar patterns of evolutionary divergence have occurred, resulting in the evolution of the same set...

Losos, Jonathan B.; Glor, Richard E.; Kolbe, Jason J.; Nicholson, Kirsten

2006-05-01T23:59:59.000Z

285

Grid and basis adaptive polynomial chaos techniques for sensitivity and uncertainty analysis  

SciTech Connect (OSTI)

The demand for accurate and computationally affordable sensitivity and uncertainty techniques is constantly on the rise and has become especially pressing in the nuclear field with the shift to Best Estimate Plus Uncertainty methodologies in the licensing of nuclear installations. Besides traditional, already well developed methods such as first order perturbation theory or Monte Carlo sampling Polynomial Chaos Expansion (PCE) has been given a growing emphasis in recent years due to its simple application and good performance. This paper presents new developments of the research done at TU Delft on such Polynomial Chaos (PC) techniques. Our work is focused on the Non-Intrusive Spectral Projection (NISP) approach and adaptive methods for building the PCE of responses of interest. Recent efforts resulted in a new adaptive sparse grid algorithm designed for estimating the PC coefficients. The algorithm is based on Gerstner's procedure for calculating multi-dimensional integrals but proves to be computationally significantly cheaper, while at the same it retains a similar accuracy as the original method. More importantly the issue of basis adaptivity has been investigated and two techniques have been implemented for constructing the sparse PCE of quantities of interest. Not using the traditional full PC basis set leads to further reduction in computational time since the high order grids necessary for accurately estimating the near zero expansion coefficients of polynomial basis vectors not needed in the PCE can be excluded from the calculation. Moreover the sparse PC representation of the response is easier to handle when used for sensitivity analysis or uncertainty propagation due to the smaller number of basis vectors. The developed grid and basis adaptive methods have been implemented in Matlab as the Fully Adaptive Non-Intrusive Spectral Projection (FANISP) algorithm and were tested on four analytical problems. These show consistent good performance both in terms of the accuracy of the resulting PC representation of quantities and the computational costs associated with constructing the sparse PCE. Basis adaptivity also seems to make the employment of PC techniques possible for problems with a higher number of input parameters (1520), alleviating a well known limitation of the traditional approach. The prospect of larger scale applicability and the simplicity of implementation makes such adaptive PC algorithms particularly appealing for the sensitivity and uncertainty analysis of complex systems and legacy codes.

Perk, Zoltn, E-mail: Z.Perko@tudelft.nl; Gilli, Luca, E-mail: Gilli@nrg.eu; Lathouwers, Danny, E-mail: D.Lathouwers@tudelft.nl; Kloosterman, Jan Leen, E-mail: J.L.Kloosterman@tudelft.nl

2014-03-01T23:59:59.000Z

286

Geometric Structure of the Adaptive Controller of the Human Arm  

E-Print Network [OSTI]

The objects with which the hand interacts with may significantly change the dynamics of the arm. How does the brain adapt control of arm movements to this new dynamic? We show that adaptation is via composition of a ...

Shadmehr, Reza

1993-07-01T23:59:59.000Z

287

Adaptive Treatment Strategies Getting SMART About Developing Individualized  

E-Print Network [OSTI]

Other names are dynamic treatment regimes, treatment algorithms, stepped care models, expert systems: prevent relapse to alcohol abuse · Critical treatment decisions: which treatment to provide first?; which1 Adaptive Treatment Strategies Getting SMART About Developing Individualized Sequences of Adaptive

Murphy, Susan A.

288

Artificial gravity : neurovestibular adaptation to incremental exposure to centrifugation  

E-Print Network [OSTI]

(cont.) not build up adaptation, all subjects in the experimental group who completed the protocol showed signs of adaptation to the stimulus. Only one subject did not complete the five sessions, setting the drop-out rate ...

Bruni, Sylvain, 1981-

2004-01-01T23:59:59.000Z

289

Adaptive Power Control for Single and Multiuser Opportunistic Systems  

E-Print Network [OSTI]

In this dissertation, adaptive power control for single and multiuser opportunistic systems is investigated. First, a new adaptive power-controlled diversity combining scheme for single user systems is proposed, upon which is extended...

Nam, Sung Sik

2010-07-14T23:59:59.000Z

290

Funding for adaptation to climate change : the case of Surat  

E-Print Network [OSTI]

The need for cities to adapt to climate change is widely acknowledged, yet the question of adaptation finance remains uncertain. Unable to access global climate funds, cities must seek out alternative sources to support ...

Patel, Toral

2014-01-01T23:59:59.000Z

291

Climate Change Adaptation: A Collective Action Perspective on Federalism Considerations  

E-Print Network [OSTI]

adaptation to minimize the adverse effects of climate change. Climate change adaptation is designed to increase the resilience of natural and human ecosystems to the threats posed by a changing environment. Although an extensive literature concerning...

Glicksman, Robert L.; Levy, Richard E.

2010-01-01T23:59:59.000Z

292

Accelerated Adaptive Markov Chain for Partition Function Computation  

E-Print Network [OSTI]

Accelerated Adaptive Markov Chain for Partition Function Computation Stefano Ermon, Carla P. Gomes Ithaca NY 14853, U.S.A. Abstract We propose a novel Adaptive Markov Chain Monte Carlo algorithm

Keinan, Alon

293

The Binding of Learning to Action in Motor Adaptation  

E-Print Network [OSTI]

In motor tasks, errors between planned and actual movements generally result in adaptive changes which reduce the occurrence of similar errors in the future. It has commonly been assumed that the motor adaptation arising ...

Gonzalez Castro, Luis Nicolas

294

Learning from Monitoring & Evaluation a blueprint for an adaptive organisation  

E-Print Network [OSTI]

Learning from Monitoring & Evaluation a blueprint for an adaptive organisation Learning from Monitoring & Evaluation a blueprint for an adaptive organisation Jake Morris and Anna Lawrence Social & Economic Research Group, Forest Research Aim and structure Learning is an essential characteristic

295

Evaluation and Adaptation of 5-Cycle Fuel Economy Testing and...  

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

Adaptation of 5-Cycle Fuel Economy Testing and Calculations for HEVs and PHEVs Evaluation and Adaptation of 5-Cycle Fuel Economy Testing and Calculations for HEVs and PHEVs 2012...

296

Final report on LDRD project 105967 : exploring the increase in GaAs photodiode responsivity with increased neutron fluence.  

SciTech Connect (OSTI)

A previous LDRD studying radiation hardened optoelectronic components for space-based applications led to the result that increased neutron irradiation from a fast-burst reactor caused increased responsivity in GaAs photodiodes up to a total fluence of 4.4 x 10{sup 13} neutrons/cm{sup 2} (1 MeV Eq., Si). The silicon photodiodes experienced significant degradation. Scientific literature shows that neutrons can both cause defects as well as potentially remove defects in an annealing-like process in GaAs. Though there has been some modeling that suggests how fabrication and radiation-induced defects can migrate to surfaces and interfaces in GaAs and lead to an ordering effect, it is important to consider how these processes affect the performance of devices, such as the basic GaAs p-i-n photodiode. In this LDRD, we manufactured GaAs photodiodes at the MESA facility, irradiated them with electrons and neutrons at the White Sands Missile Range Linac and Fast Burst Reactor, and performed measurements to show the effect of irradiation on dark current, responsivity and high-speed bandwidth.

Blansett, Ethan L.; Geib, Kent Martin; Cich, Michael Joseph; Wrobel, Theodore Frank; Peake, Gregory Merwin; Fleming, Robert M.; Serkland, Darwin Keith; Wrobel, Diana L.

2008-01-01T23:59:59.000Z

297

Adaptive mean filtering for noise reduction in CT polymer gel dosimetry  

SciTech Connect (OSTI)

X-ray computed tomography (CT) as a method of extracting 3D dose information from irradiated polymer gel dosimeters is showing potential as a practical means to implement gel dosimetry in a radiation therapy clinic. However, the response of CT contrast to dose is weak and noise reduction is critical in order to achieve adequate dose resolutions with this method. Phantom design and CT imaging technique have both been shown to decrease image noise. In addition, image postprocessing using noise reduction filtering techniques have been proposed. This work evaluates in detail the use of the adaptive mean filter for reducing noise in CT gel dosimetry. Filter performance is systematically tested using both synthetic patterns mimicking a range of clinical dose distribution features as well as actual clinical dose distributions. Both low and high signal-to-noise ratio (SNR) situations are examined. For all cases, the effects of filter kernel size and the number of iterations are investigated. Results indicate that adaptive mean filtering is a highly effective tool for noise reduction CT gel dosimetry. The optimum filtering strategy depends on characteristics of the dose distributions and image noise level. For low noise images (SNR {approx}20), the filtered results are excellent and use of adaptive mean filtering is recommended as a standard processing tool. For high noise images (SNR {approx}5) adaptive mean filtering can also produce excellent results, but filtering must be approached with more caution as spatial and dose distortions of the original dose distribution can occur.

Hilts, Michelle; Jirasek, Andrew [Medical Physics, BC Cancer Agency-Vancouver Island Centre, Victoria, British Columbia, V8R6V5 (Canada); Department of Physics and Astronomy, University of Victoria, Victoria, British Columbia, V8W2Y2 (Canada)

2008-01-15T23:59:59.000Z

298

BIA Request for Proposals for Climate Adaptation Grants for Tribes  

Broader source: Energy.gov [DOE]

Download the Bureau of Indian Affairs Request for Proposals for Climate Adaptation Grants for Tribes, due November 29.

299

Communication adapter for use with a drilling component  

DOE Patents [OSTI]

A communication adapter is disclosed that provides for removable attachment to a drilling component when the drilling component is not actively drilling and for communication with an integrated transmission system in the drilling component. The communication adapter comprises a data transmission coupler that facilitates communication between the drilling component and the adapter, a mechanical coupler that facilitates removable attachment of the adapter to the drilling component, and a data interface.

Hall, David R. (Provo, UT); Pixton, David S. (Lehi, UT); Hall; Jr.; H. Tracy (Provo, UT); Bradford, Kline (Orem, UT); Rawle, Michael (Springville, UT)

2007-04-03T23:59:59.000Z

300

Genomic islands predict functional adaptation in marine actinobacteria  

E-Print Network [OSTI]

Ecological adaptations among bacterial populations have been linked to genomic islands, strain-specific regions of DNA that house

Penn, Kevin

2010-01-01T23:59:59.000Z

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


301

Molecular dissection of the roles of the SOD genes in mammalian response to low dose irradiation  

SciTech Connect (OSTI)

It has been long recognized that a significant fraction of the radiation-induced genetic damage to cells are caused by secondary oxidative species. Internal cellular defense systems against oxidative stress play significant roles in countering genetic damage induced by ionizing radiation. The role of the detoxifying enzymes may be even more prominent in the case of low-dose, low-LET irradiation, as the majority of genetic damage may be caused by secondary oxidative species. In this study we have attempted to decipher the roles of the superoxide dismutase (SOD) genes, which are responsible for detoxifying the superoxide anions. We used adenovirus vectors to deliver RNA interference (RNAi or siRNA) technology to down-regulate the expression levels of the SOD genes. We have also over-expressed the SOD genes by use of recombinant adenovirus vectors. Cells infected with the vectors were then subjected to low dose ?-irradiation. Total RNA were extracted from the exposed cells and the expression of 9000 genes were profiled by use of cDNA microarrays. The result showed that low dose radiation had clear effects on gene expression in HCT116 cells. Both over-expression and down-regulation of the SOD1 gene can change the expression profiles of sub-groups of genes. Close to 200 of the 9000 genes examined showed over two-fold difference in expression under various conditions. Genes with changed expression pattern belong to many categories that include: early growth response, DNA-repair, ion transport, apoptosis, and cytokine response.

Eric Y. Chuang

2006-08-31T23:59:59.000Z

302

HAZARDOUS MATERIALS EMERGENCY RESPONSE  

E-Print Network [OSTI]

ANNEX Q HAZARDOUS MATERIALS EMERGENCY RESPONSE #12;ANNEX Q - HAZARDOUS MATERIALS EMERGENCY RESPONSE 03/10/2014 v.2.0 Page Q-1 PROMULGATION STATEMENT Annex Q: Hazardous Materials Emergency Response, and contents within, is a guide to how the University conducts a response specific to a hazardous materials

303

Advanced Demand Responsive Lighting  

E-Print Network [OSTI]

Advanced Demand Responsive Lighting Host: Francis Rubinstein Demand Response Research Center demand responsive lighting systems ­ Importance of dimming ­ New wireless controls technologies · Advanced Demand Responsive Lighting (commenced March 2007) #12;Objectives · Provide up-to-date information

304

Some Computational Problems Arising in Adaptive Optics Imaging Systems  

E-Print Network [OSTI]

Some Computational Problems Arising in Adaptive Optics Imaging Systems Robert J. Plemmons \\Lambda numerical linear algebra tech­ niques in adaptive optics imaging control computations. Real­time adaptive optics is a means for enhancing the resolution of ground based, optical telescopes beyond the limits

Plemmons, Robert J.

305

Adaptive beam profile control using a simulated annealing algorithm  

E-Print Network [OSTI]

adaptive optics system," Opt. Commun. 176, 339-345 (2000). 3. R. B. Shake and B. C. Platt, "Production. Murnane, H. C. Kapteyn, S. Backus, G. Vdovin "Adaptive pulse compensation for transform-limited 15-fs high-energy transverse mode control and optimisation of an all-solid-state laser using an intracavity adaptive

306

Extending Mobile Computer Battery Life through Energy-Aware Adaptation  

E-Print Network [OSTI]

Extending Mobile Computer Battery Life through Energy-Aware Adaptation Jason Flinn CMU-CS-01 entity. #12;Keywords: Energy-aware adaptation, application-aware adaptation, power manage- ment, mobile and applications, must also contribute to energy conservation. This dissertation puts forth the claim that energy-aware

307

Extending Mobile Computer Battery Life through EnergyAware Adaptation  

E-Print Network [OSTI]

Extending Mobile Computer Battery Life through EnergyAware Adaptation Jason Flinn CMUCS01 entity. #12; Keywords: Energyaware adaptation, applicationaware adaptation, power manage ment, mobile and applications, must also contribute to energy conservation. This dissertation puts forth the claim that energyaware

Flinn, Jason

308

Automated Web Page Synthesis in Adaptive Web Systems  

E-Print Network [OSTI]

Automated Web Page Synthesis in Adaptive Web Systems Hossein Sadat and Ali Ghorbani Intelligent, Canada {t15h7,ghorbani}@unb.ca Abstract. An adaptive Web system adapts the Web pages to its users, based of the system. In this paper, we formalize dynamic generation of Web pages and refer to it as Web page synthesis

Ghorbani, Ali

309

Phenotypic plasticity facilitates recurrent rapid adaptation to introduced predators  

E-Print Network [OSTI]

Phenotypic plasticity facilitates recurrent rapid adaptation to introduced predators Alison G) A central role for phenotypic plasticity in adaptive evolution is often posited yet lacks empirical support of preexisting developmental pathways, producing rapid adaptive change. We examined the role of plasticity

Pfrender, Michael

310

Grid adaptation for multiscale plasma simulations Gian Luca Delzanno  

E-Print Network [OSTI]

Grid adaptation for multiscale plasma simulations Gian Luca Delzanno Los Alamos National Laboratory tools need to be developed to bridge the gap between these disparate scales. Grid adaptation is one of such tools, useful to address multiple length scales, and we present a new powerful grid adaptation method

Ito, Atsushi

311

MEDIA RESOURCES ADAPTATION FOR LIMITED DEVICES TAYEB LEMLOUMA1  

E-Print Network [OSTI]

MEDIA RESOURCES ADAPTATION FOR LIMITED DEVICES TAYEB LEMLOUMA1 ; NABIL LAYADA1 1 WAM Project, INRIA.Lemlouma@inrialpes.fr; Nabil.Layaida@inrialpes.fr In this paper, we define a framework for media resources manipulation in an adaptive content delivery system. We discuss the media resources manipulation in an adaptation

Paris-Sud XI, Universit de

312

What Should Adaptivity Mean to Interactive Software Programmers?  

E-Print Network [OSTI]

and adaptation are combined in a simple and innovative manner. Author Keywords Adaptive software, plasticity.2.11.Software engineering: Software Architectures INTRODUCTION Software adaptivity is a long time- stood as the self-modification of a system under context vari- ations, arose as a significant issue

Paris-Sud XI, Université de

313

Creating an adaptable workforce: important implications for CIOs  

E-Print Network [OSTI]

talent Planning for leadership succession Fostering workforce adaptability Unquestionably, to winMarch 2008 Creating an adaptable workforce: important implications for CIOs #12;Creating an adaptable workforce: important implications for CIOs Page 2 Contents 2 Introduction 3 The IBM Global Human

314

Market-based mechanisms for climate change adaptation  

E-Print Network [OSTI]

of Climate Change and Energy Efficiency) and the National Climate Change Adaptation Research FacilityMarket-based mechanisms for climate change adaptation Final Report John McAneney, Ryan Crompton FOR CLIMATE CHANGE ADAPTATION Assessing the potential for and limits to insurance and market-based mechanisms

Colorado at Boulder, University of

315

Adaptation Control in Adaptive Hypermedia Systems Hongjing Wu, Paul De Bra, Ad Aerts, GeertJan Houben  

E-Print Network [OSTI]

model for the architecture of adaptive hypermedia applications: AHAM (for Adaptive Hypermedia Application Model) [DHW99], which is an extension of the Dexter hypermedia reference model [HS90, HS94]. AHAM

De Bra, Paul

316

Adaptation Control in Adaptive Hypermedia Systems Hongjing Wu, Paul De Bra, Ad Aerts, Geert-Jan Houben  

E-Print Network [OSTI]

model for the architecture of adaptive hypermedia applications: AHAM (for Adaptive Hypermedia Application Model) [DHW99], which is an extension of the Dexter hypermedia reference model [HS90, HS94]. AHAM

Houben, Geert-Jan

317

Adaptive phase measurements for narrowband squeezed beams  

E-Print Network [OSTI]

We have previously [Phys. Rev. A 65, 043803 (2002)] analyzed adaptive measurements for estimating the continuously varying phase of a coherent beam, and a broadband squeezed beam. A real squeezed beam must have finite photon flux N and hence can be significantly squeezed only over a limited frequency range. In this paper we analyze adaptive phase measurements of this type for a realistic model of a squeezed beam. We show that, provided it is possible to suitably choose the parameters of the beam, a mean-square phase uncertainty scaling as (N/kappa)^{-5/8} is possible, where kappa is the linewidth of the beam resulting from the fluctuating phase. This is an improvement over the (N/kappa)^{-1/2} scaling found previously for coherent beams. In the experimentally realistic case where there is a limit on the maximum squeezing possible, the variance will be reduced below that for coherent beams, though the scaling is unchanged.

Dominic W. Berry; Howard M. Wiseman

2006-03-22T23:59:59.000Z

318

Robust adaptive control of HVDC systems  

SciTech Connect (OSTI)

The transient performance of an HVDC power system is highly dependent on the parameters of the current/voltage regulators of the converter controls. In order to better accommodate changes in system structure or dc operating conditions, this paper introduces a new adaptive control strategy. The advantages of automatic tuning for continuous fine tuning are combined with predetermined gain scheduling in order to achieve robustness for large disturbances. Examples are provided for a digitally simulated back-to-back dc system.

Reeve, J.; Sultan, M. (Univ. of Waterloo, Ontario (Canada))

1994-07-01T23:59:59.000Z

319

RUMINAL ADAPTATION TO INCREASING LEVELS OF CONCENTRATES  

E-Print Network [OSTI]

.0 % citrus pulp, 1.0 % lard, 7.0 % sugarbeet pulp, 3.3 % oat husk meal, 2.0 % coconut expeller and 2-chromatography. The rate of lactate fermentation was measured by incubation of 10 ml rumen fluid (taken at 14.00 h) with 1. If adaptation occurs one should expect an increase of lactate and a higher rate of L- lactate fermentation

Paris-Sud XI, Universit de

320

Chemical Spill Response Procedure Initial Response  

E-Print Network [OSTI]

Chemical Spill Response Procedure Initial Response 1. Advise lab occupants of the spill such as quantity spilled and chemical name. Risk Assessment 3. Conduct an initial risk assessment to determine if to the chemical spill. This link can be found at the bottom of the Campus Security homepage, http

Note: This page contains sample records for the topic "radiation-induced adaptive responses" 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

E-Print Network 3.0 - adaptive simulated annealing Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Report Summary: mimicking each specific behavior. 12; Keywords: simulated annealing, organizational learning, adaptation... on structure and adaptability, under the...

322

Optimization Online - Adaptive Robust Optimization with Dynamic ...  

E-Print Network [OSTI]

Sep 29, 2014 ... Abstract: The exceptional benefits of wind power as an environmentally responsible renewable energy resource have led to an increasing...

Alvaro Lorca

2014-09-29T23:59:59.000Z

323

Adaptive powertrain control for plugin hybrid electric vehicles  

DOE Patents [OSTI]

A powertrain control system for a plugin hybrid electric vehicle. The system comprises an adaptive charge sustaining controller; at least one internal data source connected to the adaptive charge sustaining controller; and a memory connected to the adaptive charge sustaining controller for storing data generated by the at least one internal data source. The adaptive charge sustaining controller is operable to select an operating mode of the vehicle's powertrain along a given route based on programming generated from data stored in the memory associated with that route. Further described is a method of adaptively controlling operation of a plugin hybrid electric vehicle powertrain comprising identifying a route being traveled, activating stored adaptive charge sustaining mode programming for the identified route and controlling operation of the powertrain along the identified route by selecting from a plurality of operational modes based on the stored adaptive charge sustaining mode programming.

Kedar-Dongarkar, Gurunath; Weslati, Feisel

2013-10-15T23:59:59.000Z

324

Spinning Reserve From Responsive Loads  

SciTech Connect (OSTI)

Responsive load is the most underutilized reliability resource available to the power system today. It is currently not used at all to provide spinning reserve. Historically there were good reasons for this, but recent technological advances in communications and controls have provided new capabilities and eliminated many of the old obstacles. North American Electric Reliability Council (NERC), Federal Energy Regulatory Commission (FERC), Northeast Power Coordinating Council (NPCC), New York State Reliability Council (NYSRC), and New York Independent System Operator (NYISO) rules are beginning to recognize these changes and are starting to encourage responsive load provision of reliability services. The Carrier ComfortChoice responsive thermostats provide an example of these technological advances. This is a technology aimed at reducing summer peak demand through central control of residential and small commercial air-conditioning loads. It is being utilized by Long Island Power Authority (LIPA), Consolidated Edison (ConEd), Southern California Edison (SCE), and San Diego Gas and Electric (SDG&E). The technology is capable of delivering even greater response in the faster spinning reserve time frame (while still providing peak reduction). Analysis of demand reduction testing results from LIPA during the summer of 2002 provides evidence to back up this claim. It also demonstrates that loads are different from generators and that the conventional wisdom, which advocates for starting with large loads as better ancillary service providers, is flawed. The tempting approach of incrementally adapting ancillary service requirements, which were established when generators were the only available resources, will not work. While it is easier for most generators to provide replacement power and non-spinning reserve (the slower response services) than it is to supply spinning reserve (the fastest service), the opposite is true for many loads. Also, there is more financial reward for supplying spinning reserve than for supplying the other reserve services as a result of the higher spinning reserve prices. The LIPAedge program (LIPA's demand reduction program using Carrier ComfortChoice thermostats) provides an opportunity to test the use of responsive load for spinning reserve. With potentially 75 MW of spinning reserve capability already installed, this test program can also make an important contribution to the capacity needs of Long Island during the summer of 2003. Testing could also be done at ConEd ({approx}30 MW), SCE ({approx}15 MW), and/or SDG&E ({approx}15 MW). This paper is divided into six chapters. Chapter 2 discusses the contingency reserve ancillary services, their functions in supporting power system reliability, and their technical requirements. It also discusses the policy and tariff requirements and attempts to distinguish between ones that are genuinely necessary and ones that are artifacts of the technologies that were historically used to provide the services. Chapter 3 discusses how responsive load could provide contingency reserves (especially spinning reserve) for the power system. Chapter 4 specifically discusses the Carrier ComfortChoice responsive thermostat technology, the LIPAedge experience with that technology, and how the technology could be used to supply spinning reserve. Chapter 5 discusses a number of unresolved issues and suggests areas for further research. Chapter 6 offers conclusions and recommendations.

Kirby, B.J.

2003-04-08T23:59:59.000Z

325

Soil erosion from sugar beet in Central Europe in response to climate change induced seasonal precipitation variations  

E-Print Network [OSTI]

of adaptive land-use management for climate change response strategies in the agricultural sector. 2007; Conservation agriculture; Erosion modelling 1. Introduction Climate change of anthropogenic origin is widelySoil erosion from sugar beet in Central Europe in response to climate change induced seasonal

Quinton, John

326

Method for removing tilt control in adaptive optics systems  

DOE Patents [OSTI]

A new adaptive optics system and method of operation are disclosed, whereby the method removes tilt control, and includes the steps of using a steering mirror to steer a wavefront in the desired direction, for aiming an impinging aberrated light beam in the direction of a deformable mirror. The deformable mirror has its surface deformed selectively by means of a plurality of actuators, and compensates, at least partially, for existing aberrations in the light beam. The light beam is split into an output beam and a sample beam, and the sample beam is sampled using a wavefront sensor. The sampled signals are converted into corresponding electrical signals for driving a controller, which, in turn, drives the deformable mirror in a feedback loop in response to the sampled signals, for compensating for aberrations in the wavefront. To this purpose, a displacement error (gradient) of the wavefront is measured, and adjusted by a modified gain matrix, which satisfies the following equation: G{prime} = (I{minus}X(X{sup T} X){sup {minus}1}X{sup T})G(I{minus}A). 3 figs.

Salmon, J.T.

1998-04-28T23:59:59.000Z

327

Method for removing tilt control in adaptive optics systems  

DOE Patents [OSTI]

A new adaptive optics system and method of operation, whereby the method removes tilt control, and includes the steps of using a steering mirror to steer a wavefront in the desired direction, for aiming an impinging aberrated light beam in the direction of a deformable mirror. The deformable mirror has its surface deformed selectively by means of a plurality of actuators, and compensates, at least partially, for existing aberrations in the light beam. The light beam is split into an output beam and a sample beam, and the sample beam is sampled using a wavefront sensor. The sampled signals are converted into corresponding electrical signals for driving a controller, which, in turn, drives the deformable mirror in a feedback loop in response to the sampled signals, for compensating for aberrations in the wavefront. To this purpose, a displacement error (gradient) of the wavefront is measured, and adjusted by a modified gain matrix, which satisfies the following equation: G'=(I-X(X.sup.T X).sup.-1 X.sup.T)G(I-A)

Salmon, Joseph Thaddeus (Livermore, CA)

1998-01-01T23:59:59.000Z

328

AdaptiveARC | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectric Coop,SaveWhiskeyEnergyAd-Venta Jump to:Colorado:01.AdamsvilleAdaptiveARC

329

WeADAPT | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectric Coop,Save EnergyGlouster,Winside,Warren CountyUtility JumpWeADAPT Jump

330

Adaptive schemes for incomplete quantum process tomography  

SciTech Connect (OSTI)

We propose an iterative algorithm for incomplete quantum process tomography with the help of quantum state estimation. The algorithm, which is based on the combined principles of maximum likelihood and maximum entropy, yields a unique estimator for an unknown quantum process when one has less than a complete set of linearly independent measurement data to specify the quantum process uniquely. We apply this iterative algorithm adaptively in various situations and so optimize the amount of resources required to estimate a quantum process with incomplete data.

Teo, Yong Siah [Centre for Quantum Technologies, National University of Singapore, Singapore 117543 (Singapore); NUS Graduate School for Integrative Sciences and Engineering, Singapore 117597 (Singapore); Englert, Berthold-Georg [Centre for Quantum Technologies, National University of Singapore, Singapore 117543 (Singapore); Department of Physics, National University of Singapore, Singapore 117542 (Singapore); Rehacek, Jaroslav; Hradil, Zdenek [Department of Optics, Palacky University, 17. listopadu 12, CZ-77146 Olomouc (Czech Republic)

2011-12-15T23:59:59.000Z

331

Supporting User Adaptation in Adaptive Hypermedia Applications Hongjing Wu, GeertJan Houben, Paul De Bra  

E-Print Network [OSTI]

applications, named AHAM (for Adaptive Hypermedia Application Model) [DHW99]. In AHAM knowledge is represented through hierarchies of large composite abstract concepts as well as small atomic ones. AHAM also divides. In this paper, we concentrate on the user modeling aspects of AHAM, but also describe how they relate

De Bra, Paul

332

Supporting User Adaptation in Adaptive Hypermedia Applications Hongjing Wu, Geert-Jan Houben, Paul De Bra  

E-Print Network [OSTI]

applications, named AHAM (for Adaptive Hypermedia Application Model) [DHW99]. In AHAM knowledge is represented through hierarchies of large composite abstract concepts as well as small atomic ones. AHAM also divides. In this paper, we concentrate on the user modeling aspects of AHAM, but also describe how they relate

Houben, Geert-Jan

333

Restricted Complexity Framework for Nonlinear Adaptive Control in Complex Systems  

SciTech Connect (OSTI)

Control law adaptation that includes implicit or explicit adaptive state estimation, can be a fundamental underpinning for the success of intelligent control in complex systems, particularly during subsystem failures, where vital system states and parameters can be impractical or impossible to measure directly. A practical algorithm is proposed for adaptive state filtering and control in nonlinear dynamic systems when the state equations are unknown or are too complex to model analytically. The state equations and inverse plant model are approximated by using neural networks. A framework for a neural network based nonlinear dynamic inversion control law is proposed, as an extrapolation of prior developed restricted complexity methodology used to formulate the adaptive state filter. Examples of adaptive filter performance are presented for an SSME simulation with high pressure turbine failure to support extrapolations to adaptive control problems.

Williams, Rube B. [Los Alamos National Laboratory, P.O. Box 1663, MS K575, Los Alamos, NM 87545 (United States)

2004-02-04T23:59:59.000Z

334

Error Correction, Sensory Prediction, and Adaptation  

E-Print Network [OSTI]

in the response of our proprioceptive neurons. The transmission lines that connect a robot's motors and sensors to issue commands in microseconds. In contrast, our transmission lines (axons) move information slower than

335

Adaptive Non-Boltzmann Monte Carlo  

SciTech Connect (OSTI)

This manuscript generalizes the use of transition probabilities (TPs) between states, which are efficient relative to histogram procedures in deriving system properties. The empirical TPs of the simulation depend on the importance weights and are temperature-specific, so they are not conducive to accumulating statistics as weights change or to extrapolating in temperature. To address these issues, the authors provide a method for inferring Boltzmann-weighted TPs for one temperature from simulations run at other temperatures and/or at different adaptively varying importance weights. They refer to these as canonical transition probabilities (CTPs). System properties are estimated from CTPs. Statistics on CTPs are gathered by inserting a low-cost easily-implemented bookkeeping step into the Metropolis algorithm for non-Boltzmann sampling. The CTP method is inherently adaptive, can take advantage of partitioning of the state space into small regions using either serial or (embarrassingly) parallel architectures, and reduces variance by avoiding histogramming. They also demonstrate how system properties may be extrapolated in temperature from CTPs without the extra memory required by using energy as a microstate label. Nor does it require the solution of non-linear equations used in histogram methods.

Fitzgerald, M.; Picard, R.R.; Silver, R.N.

1998-06-01T23:59:59.000Z

336

A systems approach to uncovering the adaptive response of cancer to targeted therapies  

E-Print Network [OSTI]

Tyrosine kinase inhibitors have significant promise in the fight to develop agents that can target cancer in a tumor-specific manner. A number of drugs have been and are currently in development to inhibit specific kinases ...

Randall, Adrian Joseph

2012-01-01T23:59:59.000Z

337

Plant responses associated with adaptation to low nitrogen stresses in selected Cynodon cultivars  

E-Print Network [OSTI]

samples under each fertility rate. The sod plugs were transplanted as solid plugs into plastic pots 20 cm deep x 21 cm top diameter. Washed mortar sand, leached with distilled water, was used as the planting medium. The pH at the time of planting was 7...), which are practica1ly identical. The small percentage of nitrogen remaining in the plants probably represents refractory ti ssue ni tr ogen and woul d be unavai 1 able to sustain any future growth. No diseases were evident at the final observation...

Sifers, Samuel I.

1986-01-01T23:59:59.000Z

338

Electrochemical Characterization of Escherichia coli Adaptive Response Protein AidB  

E-Print Network [OSTI]

When exposed to known DNA-damaging alkylating agents, Escherichia coli cells increase production of four DNA repair enzymes: Ada, AlkA, AlkB, and AidB. The role of three enzymes (Ada, AlkA, and AlkB) in repairing DNA lesions ...

Hamill, Michael J.

339

Fluid-Structure Interaction Simulation of Detonation-Driven Rupture Events of Thin-Walled Tubes with a Parallel Adaptive Level Set Method  

E-Print Network [OSTI]

present a parallel adaptive method that uses a scalar level set function to represent embedded evolving due to the passage of fully developed detonations in ethylene-oxygen mixtures. 1. INTRODUCTION The Center for Simulation of Dynamic Response of Materials at the California In- stitute of Technology has

Deiterding, Ralf

340

adaptations impaired oxidative: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

learning of phonetic consistency and generalized neural adaptation deficits in dyslexia MIT - DSpace Summary: Developmental dyslexia is a neurological condition that...

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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

Applying Climate Information for Adaptation Decision-Making:...  

Open Energy Info (EERE)

Applying Climate Information for Adaptation Decision-Making: A Guidance and Resource Document Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Applying Climate...

342

adaptive phase tracking: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

de 107 IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, VOL. 9, NO. 7, OCTOBER 1999 1025 Adaptive Motion Tracking Block Matching Algorithms for Video Coding...

343

USE OF QUADRATIC MODELS WITH MESH ADAPTIVE DIRECT ...  

E-Print Network [OSTI]

Mar 6, 2011 ... differences remain: the mesh adaptive direct search (MADS [6, ... implicit filtering method described in [19] may also be viewed as a hybrid...

Le Digabel

2011-03-06T23:59:59.000Z

344

Development based climate change adaptation and mitigation-conceptual...  

Open Energy Info (EERE)

countries AgencyCompany Organization: Lawrence Berkeley National Laboratory (LBNL) Sector: Climate, Energy, Land, Water Topics: Adaptation, Co-benefits assessment, -...

345

adaptive learning environments: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

In Saarbrucken we are developing the web-based, user-adaptive, interactive learning environment Active 69 Medium-based design: Extending a medium to create and exploratory...

346

Modeling and adaptive control of indoor unmanned aerial vehicles  

E-Print Network [OSTI]

The operation of unmanned aerial vehicles (UAVs) in constrained indoor environments presents many unique challenges in control and planning. This thesis investigates modeling, adaptive control and trajectory optimization ...

Michini, Bernard (Bernard J.)

2009-01-01T23:59:59.000Z

347

Optimization Online - An Adaptive Partition-based Approach for ...  

E-Print Network [OSTI]

Dec 2, 2014 ... Our computational results show that the proposed adaptive partition-based approach converges very fast to a small partition for our test...

Yongjia Song

2014-12-02T23:59:59.000Z

348

adaptive signal model: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Michael Richard 1990-11-13 2 UNCORRECTED 2 Stochastic adaptive control model for traffic signal systems Environmental Sciences and Ecology Websites Summary: process. The model...

349

adaptive social immunity: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

to climate risk in the coffee sector of Chiapas, Mexico Environmental Sciences and Ecology Websites Summary: Social identity, perception and motivation in adaptation to...

350

adaptive control scheme: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

systems concepts. Based Alpcan, Tansu 5 Adaptive predictive lighting controllers for daylight artificial light integrated schemes. Open Access Theses and Dissertations Summary:...

351

Adaptation to Climate Variability and Change: A Guidance Manual...  

Open Energy Info (EERE)

to Climate Variability and Change: A Guidance Manual for Development Planning Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Adaptation to Climate Variability and...

352

Adapting Urban Transport to Climate Change- Module 5f - Sustainable...  

Open Energy Info (EERE)

Adapting Urban Transport to Climate Change- Module 5f - Sustainable transport: a sourcebook for policy-makers in developing cities Jump to: navigation, search Tool Summary LAUNCH...

353

Economic Evaluation of Climate Change Adaptation Projects: Approaches...  

Open Energy Info (EERE)

of Climate Change Adaptation Projects: Approaches for the Agricultural Sector and Beyond Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Economic Evaluation of Climate...

354

How to Integrate Climate Change Adaptation into National-Level...  

Open Energy Info (EERE)

Integrate Climate Change Adaptation into National-Level Policy and Planning in the Water Sector Jump to: navigation, search Tool Summary LAUNCH TOOL Name: How to Integrate Climate...

355

Agricultural Technologies for Climate Change Mitigation and Adaptation...  

Open Energy Info (EERE)

Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Agricultural Technologies for Climate Change Mitigation and Adaptation in Developing Countries: Policy Options for...

356

adaptive antenna system: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

widely used in civil engineering to evaluate building's structural re-sistance to seismic events... Munoz, Freddy 2009-01-01 164 User Models for Adaptive Hypermedia and...

357

adaptive nonparametric instrumental: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

both selects Faraway, Julian 27 Spanish Version of the Sport Satisfaction Instrument (SSI) Adapted to Physical Education CiteSeer Summary: The objective of this research was to...

358

adaptive management tool: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

management as an alternative to traditional natural resource planning and management models. Adaptive management may provide BLM managers ... Brandenburg, Peter (Peter J.)...

359

Central African Republic-National Adaptation Plan Global Support...  

Open Energy Info (EERE)

manual, Publications, Workshop Website http:undp-alm.orgprojectsn Program Start 2013 Country Central African Republic Middle Africa References National Adaptation Plan...

360

adaptive neural coding: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

examples and in an application to image compression. 1 Introduction The self Zachmann, Gabriel 42 Adaptive Control Using Combined Online and Background Learning Neural...

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


361

adapted neural population: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

examples and in an application to image compression. 1 Introduction The self Zachmann, Gabriel 24 Adaptive Control Using Combined Online and Background Learning Neural...

362

adaptive antioxidant methionine: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Departments of *Ecology for review July 26, 2005) Adaptive radiation is defined as the evolution of ecological and phenotypic diversity within a rapidly multiplying lineage....

363

adapting balanced scorecard: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Brusilovsky School of Information and the same links to all - Stores - Museums - Courses - News sites Adaptive Web-based systems and sites Brusilovsky, Peter 237...

364

Adaptation of Lactococcus lactis to its environment : a genomics approach.  

E-Print Network [OSTI]

??This thesis describes a number of strategies of Lactococcus lactis to adapt to its ever-changing environment. Although the complete genome sequence of L. lactis subspecies (more)

Zomer, Albertus Lambert

2007-01-01T23:59:59.000Z

365

adapted mucoid strains: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

proposed by Francfort and Marigo in 19 Cremers, Daniel 2 Adaptation CiteSeer Summary: Climate change is expected to bring potentially significant changes to Washington States...

366

affects adaptive allocation: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of water allocation institutions on societys adaptability to prospective climate change. Such institutions include basic systems of water law, specific statutes, systems of...

367

adaptive control strategies: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

using any finite number of channel evaluations. Aram W. Harrow; Avinatan Hassidim; Debbie W. Leung; John Watrous 2009-09-01 12 CONTRIBUTED Adaptive Stochastic Control Energy...

368

adaptive aerospace tools: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

in the face of unknown, changing, or poorly defined operating environments. In order for adaptive control systems to be used in safety-critical aerospace applications,...

369

adaptive finite element: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

properties and performance of the adaptive finite element approach to the design of nano-photonic components. Central issues are the construction of vectorial finite elements...

370

adaptive finite elements: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

properties and performance of the adaptive finite element approach to the design of nano-photonic components. Central issues are the construction of vectorial finite elements...

371

adapter protein sly1: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

to their own needs. This is achieved by enabling users... Heeren, Bastiaan 2010-01-01 157 Baltic Ecosystem Adaptive Management Environmental Sciences and Ecology Websites Summary:...

372

Adaptive Injection Strategies (AIS) for Ultra-low Emissions Diesel...  

Broader source: Energy.gov (indexed) [DOE]

* Motivation and background * Adaptive Injection Strategy (AIS) * Simulation and optimization - Two-Stage Combustion (TSC -- HCCI + Diffusion combustion) optimization using AIS...

373

adaptive genetic algorithm: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

a xed crossover Emmerich, Michael 2 Self-Adaptive Genetic Algorithm for Constrained Optimization. Open Access Theses and Dissertations Summary: ??This study proposes a...

374

Financing Climate Adaptation and Mitigation in Rural Areas of...  

Open Energy Info (EERE)

Rural Areas of Developing Countries Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Financing Climate Adaptation and Mitigation in Rural Areas of Developing Countries...

375

Quantitative Adaptation Analytics for Assessing Dynamic Systems of Systems.  

SciTech Connect (OSTI)

Our society is increasingly reliant on systems and interoperating collections of systems, known as systems of systems (SoS). These SoS are often subject to changing missions (e.g., nation- building, arms-control treaties), threats (e.g., asymmetric warfare, terrorism), natural environments (e.g., climate, weather, natural disasters) and budgets. How well can SoS adapt to these types of dynamic conditions? This report details the results of a three year Laboratory Directed Research and Development (LDRD) project aimed at developing metrics and methodologies for quantifying the adaptability of systems and SoS. Work products include: derivation of a set of adaptability metrics, a method for combining the metrics into a system of systems adaptability index (SoSAI) used to compare adaptability of SoS designs, development of a prototype dynamic SoS (proto-dSoS) simulation environment which provides the ability to investigate the validity of the adaptability metric set, and two test cases that evaluate the usefulness of a subset of the adaptability metrics and SoSAI for distinguishing good from poor adaptability in a SoS. Intellectual property results include three patents pending: A Method For Quantifying Relative System Adaptability, Method for Evaluating System Performance, and A Method for Determining Systems Re-Tasking.

Gauthier, John H.; Miner, Nadine E.; Wilson, Michael L.; Le, Hai D.; Kao, Gio K; Melander, Darryl J.; Longsine, Dennis Earl [Sandia National Laboratories, Unknown, Unknown; Vander Meer, Robert Charles,

2015-01-01T23:59:59.000Z

376

astec code adaptability: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Marom 1997-07-14 2 Adaptive decoding for dense and sparse evaluationinterpolation codes Computer Technologies and Information Sciences Websites Summary: with errors Decoding...

377

Characterizing Uncertainty for Regional Climate Change Mitigation and Adaptation Decisions  

SciTech Connect (OSTI)

This white paper describes the results of new research to develop an uncertainty characterization process to help address the challenges of regional climate change mitigation and adaptation decisions.

Unwin, Stephen D.; Moss, Richard H.; Rice, Jennie S.; Scott, Michael J.

2011-09-30T23:59:59.000Z

378

adaptive chemistry dac: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Tool Needs for Faster Mainstream Acceptance of 3D Lim, Sung Kyu 5 Ethical Conduct in Science and Engineering Adapted from Chemistry-Biology Interface Program Ethics Materials...

379

Africa Adaptation Programme: Capacity Building Experiences-Improving...  

Open Energy Info (EERE)

of historical climate data, climate projections and climate vulnerability and risk studies for building climate resilient communities. The Africa Adaptation Programme,...

380

Demand Response Spinning Reserve Demonstration  

E-Print Network [OSTI]

F) Enhanced ACP Date RAA ACP Demand Response SpinningReserve Demonstration Demand Response Spinning Reservesupply spinning reserve. Demand Response Spinning Reserve

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "radiation-induced adaptive responses" 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

Automated Demand Response and Commissioning  

E-Print Network [OSTI]

Fully-Automated Demand Response Test in Large Facilities14in DR systems. Demand Response using HVAC in Commercialof Fully Automated Demand Response in Large Facilities

Piette, Mary Ann; Watson, David S.; Motegi, Naoya; Bourassa, Norman

2005-01-01T23:59:59.000Z

382

Automated Demand Response and Commissioning  

E-Print Network [OSTI]

and Demand Response in Commercial Buildings, Lawrencesystems. Demand Response using HVAC in Commercial BuildingsDemand Response Test in Large Facilities13 National Conference on Building

Piette, Mary Ann; Watson, David S.; Motegi, Naoya; Bourassa, Norman

2005-01-01T23:59:59.000Z

383

CRA Comments & Responses  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

- High-Level Liquid Waste (51105) 11 Response to CRA Comments (92005) Enclosure 1 - Computer Code VerificationTesting (92005) Inventory and Performance Assessment Reports...

384

Climate Change Response  

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

the Interior Climate Change Response "From the Everglades to the Great Lakes to Alaska and everywhere in between, climate change is a leading threat to natural and cultural...

385

GADRAS Detector Response Function.  

SciTech Connect (OSTI)

The Gamma Detector Response and Analysis Software (GADRAS) applies a Detector Response Function (DRF) to compute the output of gamma-ray and neutron detectors when they are exposed to radiation sources. The DRF is fundamental to the ability to perform forward calculations (i.e., computation of the response of a detector to a known source), as well as the ability to analyze spectra to deduce the types and quantities of radioactive material to which the detectors are exposed. This document describes how gamma-ray spectra are computed and the significance of response function parameters that define characteristics of particular detectors.

Mitchell, Dean J.; Harding, Lee; Thoreson, Gregory G; Horne, Steven M.

2014-11-01T23:59:59.000Z

386

Demand Response In California  

Broader source: Energy.gov [DOE]

Presentation covers the demand response in California and is given at the FUPWG 2006 Fall meeting, held on November 1-2, 2006 in San Francisco, California.

387

Adaptive model training system and method  

DOE Patents [OSTI]

An adaptive model training system and method for filtering asset operating data values acquired from a monitored asset for selectively choosing asset operating data values that meet at least one predefined criterion of good data quality while rejecting asset operating data values that fail to meet at least the one predefined criterion of good data quality; and recalibrating a previously trained or calibrated model having a learned scope of normal operation of the asset by utilizing the asset operating data values that meet at least the one predefined criterion of good data quality for adjusting the learned scope of normal operation of the asset for defining a recalibrated model having the adjusted learned scope of normal operation of the asset.

Bickford, Randall L; Palnitkar, Rahul M

2014-11-18T23:59:59.000Z

388

Adaptive model training system and method  

DOE Patents [OSTI]

An adaptive model training system and method for filtering asset operating data values acquired from a monitored asset for selectively choosing asset operating data values that meet at least one predefined criterion of good data quality while rejecting asset operating data values that fail to meet at least the one predefined criterion of good data quality; and recalibrating a previously trained or calibrated model having a learned scope of normal operation of the asset by utilizing the asset operating data values that meet at least the one predefined criterion of good data quality for adjusting the learned scope of normal operation of the asset for defining a recalibrated model having the adjusted learned scope of normal operation of the asset.

Bickford, Randall L; Palnitkar, Rahul M; Lee, Vo

2014-04-15T23:59:59.000Z

389

Adaptable radiation monitoring system and method  

DOE Patents [OSTI]

A portable radioactive-material detection system capable of detecting radioactive sources moving at high speeds. The system has at least one radiation detector capable of detecting gamma-radiation and coupled to an MCA capable of collecting spectral data in very small time bins of less than about 150 msec. A computer processor is connected to the MCA for determining from the spectral data if a triggering event has occurred. Spectral data is stored on a data storage device, and a power source supplies power to the detection system. Various configurations of the detection system may be adaptably arranged for various radiation detection scenarios. In a preferred embodiment, the computer processor operates as a server which receives spectral data from other networked detection systems, and communicates the collected data to a central data reporting system.

Archer, Daniel E. (Livermore, CA); Beauchamp, Brock R. (San Ramon, CA); Mauger, G. Joseph (Livermore, CA); Nelson, Karl E. (Livermore, CA); Mercer, Michael B. (Manteca, CA); Pletcher, David C. (Sacramento, CA); Riot, Vincent J. (Berkeley, CA); Schek, James L. (Tracy, CA); Knapp, David A. (Livermore, CA)

2006-06-20T23:59:59.000Z

390

Phase sensor for solar adaptive-optics  

E-Print Network [OSTI]

Wavefront sensing in solar adaptive-optics is currently done with correlating Shack-Hartmann sensors, although the spatial- and temporal-resolutions of the phase measurements are then limited by the extremely fast computing required to correlate the sensor signals at the frequencies of daytime atmospheric-fluctuations. To avoid this limitation, a new wavefront-sensing technique is presented, that makes use of the solar brightness and is applicable to extended sources. The wavefront is sent through a modified Mach-Zehnder interferometer. A small, central part of the wavefront is used as reference and is made to interfere with the rest of the wavefront. The contrast of two simultaneously measured interference-patterns provides a direct estimate of the wavefront phase, no additional computation being required. The proposed optical layout shows precise initial alignment to be the critical point in implementing the new wavefront-sensing scheme.

Kellerer, Aglae

2011-01-01T23:59:59.000Z

391

An adaptive attack on Wiesner's quantum money  

E-Print Network [OSTI]

Unlike classical money, which is hard to forge for practical reasons (e.g. producing paper with a certain property), quantum money is attractive because its security might be based on the no-cloning theorem. The first quantum money scheme was introduced by Wiesner circa 1970. Although more sophisticated quantum money schemes were proposed, Wiesner's scheme remained appealing because it is both conceptually clean and relatively easy to implement. We show efficient adaptive attacks on Wiesner's quantum money scheme [Wie83] (and its variant by Bennett et al. [BBBW83]), when valid money is accepted and passed on, while invalid money is destroyed. We propose two attacks, the first is inspired by the Elitzur-Vaidman bomb testing problem [EV93, KWH+95], while the second is based on the idea of protective measurements [AAV93]. It allows us to break Wiesner's scheme with 4 possible states per qubit, and generalizations which use more than 4 states per qubit.

Aharon Brodutch; Daniel Nagaj; Or Sattath; Dominique Unruh

2014-09-22T23:59:59.000Z

392

Adaptive SSL: Design, Implementation and Overhead Analysis submission for Work-in-Progress/Application Paper track.  

E-Print Network [OSTI]

Adaptive SSL: Design, Implementation and Overhead Analysis submission for Work an adaptation controller for SSL (Secure Socket Layer), called Adaptive SSL. 1 Introduction Applications adaptation of the Secure Socket Layer (SSL) protocol [3]. Adaptive SSL (ASSL) aims to provide appropriate se

Newcastle upon Tyne, University of

393

Saving Energy with Architectural and Frequency Adaptations for Multimedia Applications  

E-Print Network [OSTI]

Saving Energy with Architectural and Frequency Adaptations for Multimedia Applications will benefit DVS. Our adaptation control algorithm is effective in saving energy and exploits most. The existence of this idle time, called slack, implies that the processor can be slowed to save energy

Adve, Sarita

394

On Adaptive Mesh Refinement for Atmospheric Pollution Models  

E-Print Network [OSTI]

On Adaptive Mesh Refinement for Atmospheric Pollution Models Emil M. Constantinescu and Adrian res- olution system for modeling regional air pollution based on the chemical transport model STEM. Keywords: Air Pollution Modeling, Adaptive Mesh Refinement. 1 Introduction Inadequate grid resolution can

Sandu, Adrian

395

Non-Adaptive Complex Group Testing with Multiple Positive Sets  

E-Print Network [OSTI]

Non-Adaptive Complex Group Testing with Multiple Positive Sets Francis Y.L. Chin, Henry C.M. Leung Given n items with at most d of them having a particular property (referred as positive items), a test-adaptive group testing problem is to design how to group the items to minimize the number of tests required

Chin, Francis Y.L.

396

Efficiently Decodable Non-adaptive Group Testing Piotr Indyk  

E-Print Network [OSTI]

. The answer to the test tells whether xi = 0 for all i S or not. The objective is to design as few tests]. In this case, items are blood samples, which are positive if they are infected, and a test is a pool of samples: the outcome of one test cannot be used to adaptively design another test. Non- adaptive group testing (NAGT

397

NEWS AND COMMENTARY Adaptive genomic changes in Antarctic fish...............................................................  

E-Print Network [OSTI]

-zero temperatures of the Southern Ocean requires special adaptation to extreme cold, and the notothenioid fish radiation--which dominates the biomass and species diversity of Antarctic fish--has provided textbook., 2004). This result suggests that, not surprisingly, evolu- tionary adaptation to the Southern Ocean has

Renn, Susan C.P.

398

Overcoming Dataset Bias: An Unsupervised Domain Adaptation Approach  

E-Print Network [OSTI]

Overcoming Dataset Bias: An Unsupervised Domain Adaptation Approach Boqing Gong Dept. of Computer that recognition datasets are biased. Paying no heed to those biases, learning algorithms often result in classifiers with poor cross- dataset generalization. We are developing domain adaptation techniques to over

Grauman, Kristen

399

REVIEWS AND SYNTHESES Local adaptation in host use among marine  

E-Print Network [OSTI]

, local adaptation, selection. Ecology Letters (2005) 8: 448­459 I N T R O DU C T I O N Population, abundance and ecological roles of organisms (Fox & Morrow 1981; Mopper & Strauss 1998), helps to maintain, there is a lingering perception that populations in the sea rarely locally adapt, and are more likely to evolve

Sotka, Erik

400

Analysis of An Adaptive Sampler Based on Weber's Law  

E-Print Network [OSTI]

1 Analysis of An Adaptive Sampler Based on Weber's Law Onkar Dabeer Subhasis Chaudhuri Onkar Dabeer;2 Abstract Weber's law suggests a logarithmic relationship between perceptual stimuli and human perception. The Weber sampler is an adaptive, non-uniform sampling mechanism that exploits Weber's law to sample

Dabeer, Onkar

Note: This page contains sample records for the topic "radiation-induced adaptive responses" 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

Persona: a Framework to provide Adaptive Presentation for Web Documents  

E-Print Network [OSTI]

, yutaka, yama}@yy.cs.keio.ac.jp Abstract The current issue in the web document management is that every on the fly. Keywords Adaptive presentation, Web documents, Document management, Personalization 11 Persona: a Framework to provide Adaptive Presentation for Web Documents Junichi Suzuki, Gaku

Suzuki, Jun

402

Adaptive Optics in Astronomy Jay J. McCarthy  

E-Print Network [OSTI]

Adaptive Optics in Astronomy Jay J. McCarthy NW Computational Intelligence Laboratory Portland State University Abstract ­ The field of adaptive optics (AO) has developed as a means to correct for the phase disturbances of an optical signal by understanding the medium through which it passes. This paper

La Rosa, Andres H.

403

Sufficient Conditions for Well-behaved Adaptive Hypermedia Systems  

E-Print Network [OSTI]

for the architecture of adaptive hypermedia applications: the Adaptive Hypermedia Application Model (AHAM) [DHW99]. AHAM describes AHS at an abstract level, using an architecture consisting of three parts: a domain (AE) are discussed in earlier paper [WDD01]. We defined a rule language for AHS, AHAM-CA and proposed

De Bra, Paul

404

Adaptive Organizations and Emergent Forms Kathleen M. Carley  

E-Print Network [OSTI]

individual learning (micro-behavior) and organizational learning and adaptation (macro of organizations using intelligent artificial agents. Using ORGAHEAD, a multi-agent model of organizational behavior, a series of virtual experiments were run to examine issues of organizational adaptation. Results

Sadeh, Norman M.

405

Adaptive Organizations and Emergent Forms Kathleen M. Carley  

E-Print Network [OSTI]

learning (micro-behavior) and organizational learning and adaptation (macro-behavior) is the subject of organizations using intelligent artificial agents. Using ORGAHEAD, a multi-agent model of organizational behavior, a series of virtual experiments were run to examine issues of organizational adaptation. Results

Sadeh, Norman M.

406

9 Towards Adaptive Management of Native Vegetation in Regional Landscapes  

E-Print Network [OSTI]

management remains widely cited as the most logical and elegant frame- work for continuous improvement9 Towards Adaptive Management of Native Vegetation in Regional Landscapes David H Duncan1 of the `adaptive management' paradigm to natural resource man- agement, using regional management of native

Burgman, Mark

407

Particle Systems for Adaptive, Isotropic Meshing of CAD Models  

E-Print Network [OSTI]

Particle Systems for Adaptive, Isotropic Meshing of CAD Models Jonathan R. Bronson, Joshua A adaptive triangular surface and tetrahedral volume meshes from CAD models. Input shapes are treated. These particles reach a good distribution by minimizing an energy computed in 3D world space, with movements

Utah, University of

408

Equivocal Blind Signatures and Adaptive UC-Security Aggelos Kiayias  

E-Print Network [OSTI]

Equivocal Blind Signatures and Adaptive UC-Security Aggelos Kiayias Hong-Sheng Zhou April 12, 2007 Abstract We study the design of practical blind signatures in the universal composability (UC) setting against adaptive adversaries. We introduce a new property for blind signature schemes

409

Adaptive Blind Signal Processing--Neural Network Approaches  

E-Print Network [OSTI]

Adaptive Blind Signal Processing--Neural Network Approaches SHUN-ICHI AMARI, FELLOW, IEEE are presented for the problem of adaptive blind signal processing, especially instantaneous blind separation and multichannel blind deconvolution/equalization of independent source signals. We dis- cuss recent developments

Vialatte, Franois

410

Adaptive Management Strategies May be Answer to Water Disputes  

E-Print Network [OSTI]

Adaptive Management Strategies May be Answer to Water Disputes LINCOLN, Neb. -- Adaptive management leader in water- management and water-quality research. It has the largest underground aquifer in 1971 spurred new water management districts. Later developments have sought to undo environmental

Nebraska-Lincoln, University of

411

Are three-dimensional spider webs defensive adaptations?  

E-Print Network [OSTI]

LETTER Are three-dimensional spider webs defensive adaptations? Todd A. Blackledge1 *, Jonathan A-mail: tab42@cornell.edu Abstract Spider webs result from complex behaviours that have evolved under many selective pressures. Webs have been primarily considered to be foraging adaptations, neglecting

Blackledge, Todd

412

The Genetic Architecture of Adaptations to High Altitude in Ethiopia  

E-Print Network [OSTI]

The Genetic Architecture of Adaptations to High Altitude in Ethiopia Gorka Alkorta-Aranburu1, Ethiopia, 4 Howard Hughes Medical Institute, Chevy Chase, Maryland, United States of America Abstract JK, et al. (2012) The Genetic Architecture of Adaptations to High Altitude in Ethiopia. PLoS Genet 8

Dean, Matthew D.

413

Adapting Optimization Techniques to Description Logics with Concrete Domains  

E-Print Network [OSTI]

Adapting Optimization Techniques to Description Logics with Concrete Domains Anni-Yasmin Turhan backtracking and model merging can be adapted to description logics with concrete domains. We propose al) a new requirement for concrete domains in order to enable dependency directed backtracking for all clash

Haarslev, Volker

414

Adapting Optimization Techniques to Description Logics with Concrete Domains  

E-Print Network [OSTI]

Adapting Optimization Techniques to Description Logics with Concrete Domains Anni­Yasmin Turhan backtracking and model merging can be adapted to description logics with concrete domains. We propose al) a new requirement for concrete domains in order to enable dependency directed backtracking for all clash

Haarslev, Volker

415

Parametric Adaptive Spectrum Sensing Framework for Dynamic Spectrum Access Networks  

E-Print Network [OSTI]

- ture for dynamic spectrum sensing. In our approach, the radio learns the statistics of the channel Spectrum Sensing Architecture The proposed PASS architecture enables the radio to adapt its spectrumParametric Adaptive Spectrum Sensing Framework for Dynamic Spectrum Access Networks Dinesh Datla

Kansas, University of

416

Adaptive Rate Stream Processing for Smart Grid Applications on Clouds  

E-Print Network [OSTI]

Adaptive Rate Stream Processing for Smart Grid Applications on Clouds Yogesh Simmhan University within a smart (power) grid are providing utilities and power systems researchers with unprecedentedEngineering applications in the smart grid domain. One unique aspect of our work is the use of adaptive rate control

Prasanna, Viktor K.

417

Adaptive Methods for Modelling Transport Processes in Fractured Subsurface Systems  

E-Print Network [OSTI]

­ discrete Galerkin method applying finite differences for the discretization in time and the StreamlineAdaptive Methods for Modelling Transport Processes in Fractured Subsurface Systems 3rd­adaptive methods for modelling transport processes in fractured rock. As a simplification, ideal tracers

Cirpka, Olaf Arie

418

Two mechanisms for transducer adaptation in vertebrate hair cells  

E-Print Network [OSTI]

Colloquium Two mechanisms for transducer adaptation in vertebrate hair cells Jeffrey R. Holt and Massachusetts General Hospital, Wellman 414, Boston, MA 02114 Deflection of the hair bundle atop a sensory hair deflections, hair cells adapt. Two fundamentally distinct models have been proposed to explain transducer

Corey, David P.

419

Direct aperture optimization for online adaptive radiation therapy  

SciTech Connect (OSTI)

This paper is the first investigation of using direct aperture optimization (DAO) for online adaptive radiation therapy (ART). A geometrical model representing the anatomy of a typical prostate case was created. To simulate interfractional deformations, four different anatomical deformations were created by systematically deforming the original anatomy by various amounts (0.25, 0.50, 0.75, and 1.00 cm). We describe a series of techniques where the original treatment plan was adapted in order to correct for the deterioration of dose distribution quality caused by the anatomical deformations. We found that the average time needed to adapt the original plan to arrive at a clinically acceptable plan is roughly half of the time needed for a complete plan regeneration, for all four anatomical deformations. Furthermore, through modification of the DAO algorithm the optimization search space was reduced and the plan adaptation was significantly accelerated. For the first anatomical deformation (0.25 cm), the plan adaptation was six times more efficient than the complete plan regeneration. For the 0.50 and 0.75 cm deformations, the optimization efficiency was increased by a factor of roughly 3 compared to the complete plan regeneration. However, for the anatomical deformation of 1.00 cm, the reduction of the optimization search space during plan adaptation did not result in any efficiency improvement over the original (nonmodified) plan adaptation. The anatomical deformation of 1.00 cm demonstrates the limit of this approach. We propose an innovative approach to online ART in which the plan adaptation and radiation delivery are merged together and performed concurrently--adaptive radiation delivery (ARD). A fundamental advantage of ARD is the fact that radiation delivery can start almost immediately after image acquisition and evaluation. Most of the original plan adaptation is done during the radiation delivery, so the time spent adapting the original plan does not increase the overall time the patient has to spend on the treatment couch. As a consequence, the effective time allotted for plan adaptation is drastically reduced. For the 0.25, 0.5, and 0.75 cm anatomical deformations, the treatment time was increased by only 2, 4, and 6 s, respectively, as compared to no plan adaptation. For the anatomical deformation of 1.0 cm the time increase was substantially larger. The anatomical deformation of 1.0 cm represents an extreme case, which is rarely observed for the prostate, and again demonstrates the limit of this approach. ARD shows great potential for an online adaptive method with minimal extension of treatment time.

Mestrovic, Ante; Milette, Marie-Pierre; Nichol, Alan; Clark, Brenda G.; Otto, Karl [Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, Canada and Medical Physics, BC Cancer Agency-Vancouver Centre, Vancouver, British Columbia (Canada); Physics and Astronomy, University of British Columbia, Vancouver, British Columbia (Canada) and Medical Physics, BC Cancer Agency-Centre for the Southern Interior, Kelowna, British Columbia (Canada); Department of Radiation Oncology, BC Cancer Agency-Vancouver Centre, Vancouver, British Columbia (Canada); Medical Physics, Ottawa Hospital Regional Cancer Centre, Ottawa, Ontario (Canada); Medical Physics, BC Cancer Agency-Vancouver Centre, Vancouver, British Columbia (Canada)

2007-05-15T23:59:59.000Z

420

Geographic variation in phenotypic plasticity in response to dissolved oxygen in an African cichlid fish  

E-Print Network [OSTI]

Geographic variation in phenotypic plasticity in response to dissolved oxygen in an African cichlid variation in a population over a number of generations to result in a population that is locally adapted and plastic variation in gill and brain size among swamp (low oxygen; hypoxic) and river (normal oxygen

Nuismer, Scott L.

Note: This page contains sample records for the topic "radiation-induced adaptive responses" 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

Seismic Response Analysis of Different Buildings using Time-Invariant and Time-Variant Damping Coefficients  

E-Print Network [OSTI]

Seismic Response Analysis of Different Buildings using Time- Invariant and Time- Variant Damping@obs.ujf-grenoble.fr Abstract Seismic signals are characterized by strong excitations, short durations, non-linearity and non has been introduced to help in adapting to the seismic signals where the amplitude is damped

Paris-Sud XI, Université de

422

Response Time-based Self-tuning Fuzzy Control of Virtualized Resources  

E-Print Network [OSTI]

, originally developed for response time assurance in web servers to resource allocation in virtualized environments. We introduce mechanisms for adaptive output amplification and flexible rule selection in the STFC are difficult to estimate due to time-varying and diverse workload. More importantly, client-perceived quality

Xu, Cheng-Zhong

423

ENERGY EMERGENCY RESPONSE PLAN  

E-Print Network [OSTI]

CALIFORNIA ENERGY COMMISSION ENERGY EMERGENCY RESPONSE PLAN COMMISSIONREPORT October 2006 CEC-600-2006-014 Arnold Schwarzenegger, Governor #12;CALIFORNIA ENERGY COMMISSION Jackalyne Pfannenstiel Chairman James D Deputy Director FUELS AND TRANSPORTATION DIVISION #12;The Energy Emergency Response Plan is prepared

424

Eastern Frequency Response Study  

SciTech Connect (OSTI)

This study was specifically designed to investigate the frequency response of the Eastern Interconnection that results from large loss-of-generation events of the type targeted by the North American Electric Reliability Corp. Standard BAL-003 Frequency Response and Frequency Bias Setting (NERC 2012a), under possible future system conditions with high levels of wind generation.

Miller, N.W.; Shao, M.; Pajic, S.; D'Aquila, R.

2013-05-01T23:59:59.000Z

425

RESPONSIBILITIES October 2012  

E-Print Network [OSTI]

culture with strong programs of personal safety, accident and injury prevention, wellness promotionPRINCIPLES RESPONSIBILITIES PRACTICES October 2012 HEALTH & SAFETY POLICY AT STANFORD #12;1 Health & Safety Policy at Stanford October 2012 Table of Contents PRINCIPLES OF HEALTH & SAFETY 2 RESPONSIBILITIES

Kay, Mark A.

427

Page 1 | B.A. in Special Education Adapted Curriculum | Academic Plan of Study Updated May 2014 B.A. in Special Education (Adapted Curriculum)  

E-Print Network [OSTI]

Page 1 | B.A. in Special Education ­ Adapted Curriculum | Academic Plan of Study Updated May 2014 B ­ Adapted Curriculum | Academic Plan of Study Updated May 2014 Special Education - Adapted Curriculum Areas.A. in Special Education (Adapted Curriculum) Academic Plan of Study College of Education Department of Special

Raja, Anita

428

Characterization Of High-Stroke High-Aspect Ratio Micro Electro Mechanical Systems Deformable Mirrors For Adaptive Optics  

E-Print Network [OSTI]

Mirrors For Adaptive Optics, PhD Thesis, University ofFabrication Adaptive optics applications in astronomy Max, Center for Adaptive Optics, University of California,

Bouchti, Mohamed Amine

2013-01-01T23:59:59.000Z

429

Integrating Adaptive Components: An Emerging Challenge in Performance-Adaptive Systems and a Server Farm Case-Study  

E-Print Network [OSTI]

into larger adaptive sys- tems, however, presents challenges that arise from potential incompatibilities among, for identifying potential incompatibilities between com- posed adaptation policies and (ii) illustrates a general computing initiative [13], sug- gest increased need for self-managing, self-calibrating, self- healing

Liu, Xue

430

Closed-loop Reference Model adaptive control : with application to very flexible aircraft  

E-Print Network [OSTI]

One of the main features of adaptive systems is an oscillatory convergence that exacerbates with the speed of adaptation. Over the past two decades several attempts have been made to provide adaptive solutions with guaranteed ...

Gibson, Travis Eli

2014-01-01T23:59:59.000Z

431

Adaptive map alignment in the superior colliculus of the barn owl: a neuromorphic implementation  

E-Print Network [OSTI]

Adaptation is one of the basic phenomena of biology, while adaptability is an important feature for neural network. Young barn owl can well adapt its visual and auditory integration to the environmental change, such as ...

Huo, Juan

2010-01-01T23:59:59.000Z

432

Frequency Response Analysis Tool  

SciTech Connect (OSTI)

Frequency response has received a lot of attention in recent years at the national level, which culminated in the development and approval of North American Electricity Reliability Corporation (NERC) BAL-003-1 Frequency Response and Frequency Bias Setting Reliability Standard. This report is prepared to describe the details of the work conducted by Pacific Northwest National Laboratory (PNNL) in collaboration with the Bonneville Power Administration and Western Electricity Coordinating Council (WECC) Joint Synchronized Information Subcommittee (JSIS) to develop a frequency response analysis tool (FRAT). The document provides the details on the methodology and main features of the FRAT. The tool manages the database of under-frequency events and calculates the frequency response baseline. Frequency response calculations are consistent with frequency response measure (FRM) in NERC BAL-003-1 for an interconnection and balancing authority. The FRAT can use both phasor measurement unit (PMU) data, where available, and supervisory control and data acquisition (SCADA) data. The tool is also capable of automatically generating NERC Frequency Response Survey (FRS) forms required by BAL-003-1 Standard.

Etingov, Pavel V.; Kosterev, Dmitry; Dai, T.

2014-12-31T23:59:59.000Z

433

Intelligent Software Agents: Sensor Integration and Response  

SciTech Connect (OSTI)

Abstract In a post Macondo world the buzzwords are Integrity Management and Incident Response Management. The twin processes are not new but the opportunity to link the two is novel. Intelligent software agents can be used with sensor networks in distributed and centralized computing systems to enhance real-time monitoring of system integrity as well as manage the follow-on incident response to changing, and potentially hazardous, environmental conditions. The software components are embedded at the sensor network nodes in surveillance systems used for monitoring unusual events. When an event occurs, the software agents establish a new concept of operation at the sensing node, post the event status to a blackboard for software agents at other nodes to see , and then react quickly and efficiently to monitor the scale of the event. The technology addresses a current challenge in sensor networks that prevents a rapid and efficient response when a sensor measurement indicates that an event has occurred. By using intelligent software agents - which can be stationary or mobile, interact socially, and adapt to changing situations - the technology offers features that are particularly important when systems need to adapt to active circumstances. For example, when a release is detected, the local software agent collaborates with other agents at the node to exercise the appropriate operation, such as: targeted detection, increased detection frequency, decreased detection frequency for other non-alarming sensors, and determination of environmental conditions so that adjacent nodes can be informed that an event is occurring and when it will arrive. The software agents at the nodes can also post the data in a targeted manner, so that agents at other nodes and the command center can exercise appropriate operations to recalibrate the overall sensor network and associated intelligence systems. The paper describes the concepts and provides examples of real-world implementations including the Threat Detection and Analysis System (TDAS) at the International Port of Memphis and the Biological Warning and Incident Characterization System (BWIC) Environmental Monitoring (EM) Component. Technologies developed for these 24/7 operational systems have applications for improved real-time system integrity awareness as well as provide incident response (as needed) for production and field applications.

Kulesz, James J [ORNL; Lee, Ronald W [ORNL

2013-01-01T23:59:59.000Z

434

Prediction and Adaptation in an Evolving Chaotic Environment  

E-Print Network [OSTI]

We describe the results of analytic calculations and computer simulations of adaptive predictors (predictive agents) responding to an evolving chaotic environment and to one another. Our simulations are designed to quantify adaptation and to explore co-adaptation for a simple calculable model of a complex adaptive system. We first consider the ability of a single agent, exposed to a chaotic environment, to model, control, and predict the future states of that environment. We then introduce a second agent which, in attempting to model and control both the chaotic environment and the first agent, modifies the extent to which that agent can identify patterns and exercise control. We find that (i) optimal adaptive predictors have an optimal memory and an optimal complexity, which are small for a rapidly changing map dynamics and (ii) that the predictive power can be increased by imposing chaos or random noise onto the map dynamics. The competition between the two predictive agents can lead either to chaos, or to metastable emergent behavior, best described as a leader-follower relationship. Our results suggest a correlation between optimal adaptation, optimal complexity, and emergent behavior, and provide preliminary support for the concept of optimal co-adaptation near the edge of chaos.

Alfred Hbler; David Pines

1993-06-28T23:59:59.000Z

435

Online Adaptive Replanning Method for Prostate Radiotherapy  

SciTech Connect (OSTI)

Purpose: To report the application of an adaptive replanning technique for prostate cancer radiotherapy (RT), consisting of two steps: (1) segment aperture morphing (SAM), and (2) segment weight optimization (SWO), to account for interfraction variations. Methods and Materials: The new 'SAM+SWO' scheme was retroactively applied to the daily CT images acquired for 10 prostate cancer patients on a linear accelerator and CT-on-Rails combination during the course of RT. Doses generated by the SAM+SWO scheme based on the daily CT images were compared with doses generated after patient repositioning using the current planning target volume (PTV) margin (5 mm, 3 mm toward rectum) and a reduced margin (2 mm), along with full reoptimization scans based on the daily CT images to evaluate dosimetry benefits. Results: For all cases studied, the online replanning method provided significantly better target coverage when compared with repositioning with reduced PTV (13% increase in minimum prostate dose) and improved organ sparing when compared with repositioning with regular PTV (13% decrease in the generalized equivalent uniform dose of rectum). The time required to complete the online replanning process was 6 {+-} 2 minutes. Conclusion: The proposed online replanning method can be used to account for interfraction variations for prostate RT with a practically acceptable time frame (5-10 min) and with significant dosimetric benefits. On the basis of this study, the developed online replanning scheme is being implemented in the clinic for prostate RT.

Ahunbay, Ergun E., E-mail: eahunbay@mcw.ed [Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI (United States); Peng Cheng; Holmes, Shannon; Godley, Andrew; Lawton, Colleen; Li, X. Allen [Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI (United States)

2010-08-01T23:59:59.000Z

436

Adaptive approximation of higher order posterior statistics  

SciTech Connect (OSTI)

Filtering is an approach for incorporating observed data into time-evolving systems. Instead of a family of Dirac delta masses that is widely used in Monte Carlo methods, we here use the Wiener chaos expansion for the parametrization of the conditioned probability distribution to solve the nonlinear filtering problem. The Wiener chaos expansion is not the best method for uncertainty propagation without observations. Nevertheless, the projection of the system variables in a fixed polynomial basis spanning the probability space might be a competitive representation in the presence of relatively frequent observations because the Wiener chaos approach not only leads to an accurate and efficient prediction for short time uncertainty quantification, but it also allows to apply several data assimilation methods that can be used to yield a better approximate filtering solution. The aim of the present paper is to investigate this hypothesis. We answer in the affirmative for the (stochastic) Lorenz-63 system based on numerical simulations in which the uncertainty quantification method and the data assimilation method are adaptively selected by whether the dynamics is driven by Brownian motion and the near-Gaussianity of the measure to be updated, respectively.

Lee, Wonjung, E-mail: leew@maths.ox.ac.uk

2014-02-01T23:59:59.000Z

437

GRChombo : Numerical Relativity with Adaptive Mesh Refinement  

E-Print Network [OSTI]

Numerical relativity has undergone a revolution in the past decade. With a well-understood mathematical formalism, and full control over the gauge modes, it is now entering an era in which the science can be properly explored. In this work, we introduce GRChombo, a new numerical relativity code written to take full advantage of modern parallel computing techniques. GRChombo's features include full adaptive mesh refinement with block structured Berger-Rigoutsos grid generation which supports non-trivial "many-boxes-in-many-boxes" meshing hierarchies, and massive parallelism through the Message Passing Interface (MPI). GRChombo evolves the Einstein equation with the standard BSSN formalism, with an option to turn on CCZ4 constraint damping if required. We show that GRChombo passes all the standard "Apples-to-Apples" code comparison tests. We also show that it can stably and accurately evolve vacuum black hole spacetimes such as binary black hole mergers, and non-vacuum spacetimes such as scalar collapses into black holes. As an illustration of its AMR capability, we demonstrate the evolution of triple black hole merger, which can be set up trivially in GRChombo.

Katy Clough; Pau Figueras; Hal Finkel; Markus Kunesch; Eugene A. Lim; Saran Tunyasuvunakool

2015-03-11T23:59:59.000Z

438

GRChombo : Numerical Relativity with Adaptive Mesh Refinement  

E-Print Network [OSTI]

Numerical relativity has undergone a revolution in the past decade. With a well-understood mathematical formalism, and full control over the gauge modes, it is now entering an era in which the science can be properly explored. In this work, we introduce GRChombo, a new numerical relativity code written to take full advantage of modern parallel computing techniques. GRChombo's features include full adaptive mesh refinement with block structured Berger-Rigoutsos grid generation which supports non-trivial "many-boxes-in-many-boxes" meshing hierarchies, and massive parallelism through the Message Passing Interface (MPI). GRChombo evolves the Einstein equation with the standard BSSN formalism, with an option to turn on CCZ4 constraint damping if required. We show that GRChombo passes all the standard "Apples-to-Apples" code comparison tests. We also show that it can stably and accurately evolve vacuum black hole spacetimes such as binary black hole mergers, and non-vacuum spacetimes such as scalar collapses into b...

Clough, Katy; Finkel, Hal; Kunesch, Markus; Lim, Eugene A; Tunyasuvunakool, Saran

2015-01-01T23:59:59.000Z

439

E-Print Network 3.0 - adaptive fast multipole Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

A fast adaptive multipole algorithm for particle simulations. SIAM J. Sci. Stat... Kenney. An adaptation of the fast multipole method for evaluating layer potentials in two...

440

E-Print Network 3.0 - adaptation reliability evaluation Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

reliability evaluation Search Powered by Explorit Topic List Advanced Search Sample search results for: adaptation reliability evaluation Page: << < 1 2 3 4 5 > >> 1 Adaptive...

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


441

E-Print Network 3.0 - adaptive sampling strategy Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ray tracing, Whitted Whi80 proposed an adaptive sampling strategy which first... (Eds.) Adaptive Sampling for Geometry-aware Reconstruction Filters Pablo Bauszat1 and Martin...

442

E-Print Network 3.0 - adaptation du modele Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Adaptive algorithms for phase field models of some interface problems Department of Mathematics, Pennsylvania State University, University Park, PA 16802, USA. Summary: Adaptive...

443

E-Print Network 3.0 - academic adaptation styles Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Whatever the process or level of adaptation implemented by a learning system... of Cognitive Style Relative to Other Individual Variables Adapting the environment to suit...

444

E-Print Network 3.0 - adaptive management plan Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

results for: adaptive management plan Page: << < 1 2 3 4 5 > >> 1 Regional Water Management: Adapting to Uncertain Water Summary: & Implement Management Options Monitor &...

445

Improved evolutionary optimization from genetically adaptive multimethod search Jasper A. Vrugt, and Bruce A. Robinson  

E-Print Network [OSTI]

Improved evolutionary optimization from genetically adaptive multimethod search Jasper A. Vrugt evolutionary optimization from genetically adaptive multimethod search Jasper A. Vrugt* and Bruce A. Robinson

Vrugt, Jasper A.

446

E-Print Network 3.0 - automatic spatially-adaptive balancing...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

balancing Page: << < 1 2 3 4 5 > >> 1 Automatic Spatially-Adaptive Balancing of Energy Terms for Image Segmentation Summary: Automatic Spatially-Adaptive Balancing of Energy Terms...

447

E-Print Network 3.0 - adaptive signal detection Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

An Adaptive Filtering Approach to the Processing of Single Sweep Event Related Potentials Data Summary: on time-sequenced version of the typical adaptive signal enhancers. Two...

448

E-Print Network 3.0 - adaptive optics scanning Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Powered by Explorit Topic List Advanced Search Sample search results for: adaptive optics scanning Page: << < 1 2 3 4 5 > >> 1 Biomedical Imaging with the Adaptive Scanning...

449

Advancing Adaptive Optics Technology: Laboratory Turbulence Simulation and Optimization of Laser Guide Stars  

E-Print Network [OSTI]

of cone photoreceptors with adaptive optics spectral-domaincoherence tomography, Optics Express, Vol. 14, Issue 10,of Multi-Object Adaptive Optics on a Simulated 10-Meter

Rampy, Rachel

2013-01-01T23:59:59.000Z

450

E-Print Network 3.0 - adaptive bio-inspired wireless Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Systems Summary: -224460 Traffic Adaptivity in Wireless Sensor Networks (TRAWSN) Energy efficiency is a major concern in the design... - cations were required to adapt the...

451

E-Print Network 3.0 - adaptive path planning Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

THE TRANS-PACIFIC CROSSING: LONG RANGE ADAPTIVE PATH PLANNING FOR UAVS THROUGH VARIABLE WIND FIELDS... , and thus any path planning process must be adaptable to these changes....

452

E-Print Network 3.0 - adaptive planning target Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

MT-Adaptive A*, Planning with the Freespace Assump- tion, Target, Unknown Terrain, Video Games 1... . To this end, we extend Adaptive A*, an incremental heuristic search method,...

453

E-Print Network 3.0 - adaptive spect imaging Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

scanner In order to obtain optimal image quality with respect to a particular task, adaptive imaging Summary: adaptive SPECT imaging in a pre-clinical context. For the...

454

E-Print Network 3.0 - animal adaptive spect Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

scanner In order to obtain optimal image quality with respect to a particular task, adaptive imaging Summary: .H. Barrett, Adaptive small-animal SPECTCT, IEEE 2008...

455

E-Print Network 3.0 - adaptation technologies related Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

related Page: << < 1 2 3 4 5 > >> 1 From Adaptive Hypermedia to the Adaptive Web Systems Summary: details - Comparisons Low level technology - Text programming...

456

E-Print Network 3.0 - adaptive short forms Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

at San Diego Collection: Biology and Medicine 13 Appeared in: International Journal of Human-Computer Studies (1994) 40, 544 -472 Adaptively supported Adaptability Summary: in...

457

E-Print Network 3.0 - adaptive control based Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

-4. These methods include intelligent control, neural control, adaptive fuzzy control, memory-based control... , knowledge- based control, adaptive nonlinear control, and...

458

E-Print Network 3.0 - adaptive channel estimation Sample Search...  

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the inter-channel... method, our adaptive method achieves a smaller variance for each eigen channel, and the shorter adaptive... period achieves higher ... Source: Kuo, C.-C....

459

Accident Response Group  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

To establish Department of Energy (DOE) policy for DOE response to accidents and significant incidents involving nuclear weapons or nuclear weapon components. Cancels DOE O 5530.1. Canceled by DOE O 153.1.

1991-09-20T23:59:59.000Z

460

What's BP's social responsibility?  

E-Print Network [OSTI]

would like to suggest a third, inanimate culprit: the cult of corporate social responsibility. As crude poured into the Gulf of Mexico and the world economy struggled to recover from the financial crisis

Note: This page contains sample records for the topic "radiation-induced adaptive responses" 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

Oil spill response resources  

E-Print Network [OSTI]

. ACKNOWLEDGMENTS. TABLE OF CONTENTS . . Vn INTRODUCTION. . Oil Pollution Act. Oil Spill Response Equipment . . OB JECTIVES . 12 LITERATURE REVIEW. United States Contingency Plan. . Response Resources Definition of Clean in Context to an Oil Spill. Oil... this fitle. Title IV expands federal authority in managing oil spill clean up operations and amends the provisions for oil spill clean up under the Federal Water Pollution Control Act. It also called for Oil spill plans for vessels and facilities starting...

Muthukrishnan, Shankar

1996-01-01T23:59:59.000Z

462

Multigrid elliptic equation solver with adaptive mesh refinement  

E-Print Network [OSTI]

In this paper we describe in detail the computational algorithm used by our parallel multigrid elliptic equation solver with adaptive mesh refinement. Our code uses truncation error estimates to adaptively refine the grid as part of the solution process. The presentation includes a discussion of the orders of accuracy that we use for prolongation and restriction operators to ensure second order accurate results and to minimize computational work. Code tests are presented that confirm the overall second order accuracy and demonstrate the savings in computational resources provided by adaptive mesh refinement.

J. David Brown; Lisa L. Lowe

2005-03-22T23:59:59.000Z

463

TESTING THE APODIZED PUPIL LYOT CORONAGRAPH ON THE LABORATORY FOR ADAPTIVE OPTICS EXTREME ADAPTIVE OPTICS TESTBED  

SciTech Connect (OSTI)

We present testbed results of the Apodized Pupil Lyot Coronagraph (APLC) at the Laboratory for Adaptive Optics (LAO). These results are part of the validation and tests of the coronagraph and of the Extreme Adaptive Optics (ExAO) for the Gemini Planet Imager (GPI). The apodizer component is manufactured with a halftone technique using black chrome microdots on glass. Testing this APLC (like any other coronagraph) requires extremely good wavefront correction, which is obtained to the 1 nm rms level using the microelectricalmechanical systems (MEMS) technology, on the ExAO visible testbed of the LAO at the University of Santa Cruz. We used an APLC coronagraph without central obstruction, both with a reference super-polished flat mirror and with the MEMS to obtain one of the first images of a dark zone in a coronagraphic image with classical adaptive optics using a MEMS deformable mirror (without involving dark hole algorithms). This was done as a complementary test to the GPI coronagraph testbed at American Museum of Natural History, which studied the coronagraph itself without wavefront correction. Because we needed a full aperture, the coronagraph design is very different from the GPI design. We also tested a coronagraph with central obstruction similar to that of GPI. We investigated the performance of the APLC coronagraph and more particularly the effect of the apodizer profile accuracy on the contrast. Finally, we compared the resulting contrast to predictions made with a wavefront propagation model of the testbed to understand the effects of phase and amplitude errors on the final contrast.

Thomas, Sandrine J.; Dillon, Daren; Gavel, Donald [Laboratory for Adaptive Optics, University of California/Lick Observatories, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA 95064 (United States); Soummer, Remi [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Macintosh, Bruce [Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94550 (United States); Sivaramakrishnan, Anand, E-mail: sthomas@ucolick.org, E-mail: dillon@ucolick.org, E-mail: gavel@ucolick.org, E-mail: soummer@stsci.edu, E-mail: macintosh1@mail.llnl.gov, E-mail: anand@amnh.org [Department of Astrophysics, American Museum of Natural History, 79th Street at Central Park West, New York, NY 10024 (United States)

2011-10-15T23:59:59.000Z

464

Oecologia (Berl.) 44, 159-163 (1980) Oecologia9 by Springer-Verlag 1980 Solar Tracking Response to Drought in a Desert Annual  

E-Print Network [OSTI]

on possible adaptive benefits that might be conferred by solar tracking movements. Two species have beenOecologia (Berl.) 44, 159-163 (1980) Oecologia9 by Springer-Verlag 1980 Solar Tracking Response Lake City, UT, 84112, USA Summary. The responses to drought of the solar tracking winter annual Lupinus

Ehleringer, Jim

465

Adaptive Nodal Transport Methods for Reactor Transient Analysis  

SciTech Connect (OSTI)

Develop methods for adaptively treating the angular, spatial, and time dependence of the neutron flux in reactor transient analysis. These methods were demonstrated in the DOE transport nodal code VARIANT and the US NRC spatial kinetics code, PARCS.

Thomas Downar; E. Lewis

2005-08-31T23:59:59.000Z

466

Designing adaptable housing : the specific case of INFONAVIT  

E-Print Network [OSTI]

The traditional way of designing housing of the Mexican government agencies, obliges the population they serve (mostly working class people), to live in rigid dwellings that have little or no flexibility to be adapted to ...

Martin, Andrea M

1981-01-01T23:59:59.000Z

467

The mesh adaptive direct search algorithm with treed Gaussian ...  

E-Print Network [OSTI]

May 24, 2013 ... Keywords: Blackbox optimization, treed Gaussian processes (TGP), mesh adaptive ...... We first consider a chemical engineering simulator for styrene production described ..... Application of MATLAB and Python optimizers.

Gramacy and Le Digabel

2013-05-24T23:59:59.000Z

468

Adaptive tool selection strategies for drilling in flexible manufacturing systems  

E-Print Network [OSTI]

The thesis presents an approach to adaptive decision making strategies to reduce bottlenecks in a drilling operation and to extend tool life. It is an attempt to portray the real drilling system in a typical Flexible Manufacturing System (FMS...

Chander, Karthik Balachandran

2004-09-30T23:59:59.000Z

469

Parallel Solutions of Partial Differential Equations with Adaptive Multigrid Methods  

E-Print Network [OSTI]

Parallel Solutions of Partial Differential Equations with Adaptive Multigrid Methods results for the solution of partial differential equations based on the software platform UG. State/coarsening, robust parallel multigrid methods, various dis cretizations, dynamic load balancing, mapping and grid

Wieners, Christian

470

Democratic Republic of Congo-National Adaptation Plan Global...  

Open Energy Info (EERE)

that the NAP could build on Vision 2035 and that the NAP-GSP could help identify political entry-points for long term adaptation planning through Vision 2015. DRC are keen for...

471

Error estimation and adaptive mesh refinement for aerodynamic flows  

E-Print Network [OSTI]

Error estimation and adaptive mesh refinement for aerodynamic flows Ralf Hartmann1 and Paul Houston2 1 Institute of Aerodynamics and Flow Technology DLR (German Aerospace Center) Lilienthalplatz 7

Hartmann, Ralf

472

adaptive notch filters: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

1 12;1 Introduction Filter bank theory 1 is by now a mature topic Reilly, James P. 133 ANALYSIS OF THE ADAPTIVE MATCHED FILTER ALGORITHM FOR CASES WITH...

473

adaptive filtering system: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

1 12;1 Introduction Filter bank theory 1 is by now a mature topic Reilly, James P. 51 Study on Adaptive Kalman Filtering Algorithms in Human Movement Tracking...

474

adaptive notch filter: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

1 12;1 Introduction Filter bank theory 1 is by now a mature topic Reilly, James P. 133 ANALYSIS OF THE ADAPTIVE MATCHED FILTER ALGORITHM FOR CASES WITH...

475

adaptive smoothing filter: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

1 12;1 Introduction Filter bank theory 1 is by now a mature topic Reilly, James P. 162 ANALYSIS OF THE ADAPTIVE MATCHED FILTER ALGORITHM FOR CASES WITH...

476

adaptive large neighborhood: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

1 12;1 Introduction Filter bank theory 1 is by now a mature topic Reilly, James P. 136 First Light Adaptive Optics System for Large Binocular Telescope S....

477

Adaptive control of hypersonic vehicles in presence of actuation uncertainties  

E-Print Network [OSTI]

The thesis develops a new class of adaptive controllers that guarantee global stability in presence of actuation uncertainties. Actuation uncertainties culminate to linear plants with a partially known input matrix B. ...

Somanath, Amith

2010-01-01T23:59:59.000Z

478

The effects of age and awareness on prism adaptation  

E-Print Network [OSTI]

Neglect patients show a lack of awareness of both the prismatic displacement induced during prism adaptation and of the negative aftereffect they display afterwards. They also show significantly larger aftereffects than ...

Roach, Louise

2007-01-01T23:59:59.000Z

479

Adaptive load control of microgrids with non-dispatchable generation  

E-Print Network [OSTI]

Intelligent appliances have a great potential to provide energy storage and load shedding for power grids. Microgrids are simulated with high levels of wind energy penetration. Frequency-adaptive intelligent appliances are ...

Brokish, Kevin Martin

2009-01-01T23:59:59.000Z

480

Speech coding using spline wavelet and adaptive backward prediction  

E-Print Network [OSTI]

effort seems to be lacking in the application of using semi-orthogonal wavelets to speech coding, especially in real-time mode. In this thesis, the application of splinewavelets incorporating adaptive backward prediction to speech coding is investigated...

Zeng, Jingdong

1994-01-01T23:59:59.000Z

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


481

adaptation physiological: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

cues predictive of favorable food availability and climate serve Saltzman, Wendy 10 Bennett, A. F. 1997. Adaptation and the evolution of physiological characters,pp. 3-16. In:...

482

Adaptive properties of stochastic memristor networks: a computational study  

E-Print Network [OSTI]

., Berzina, T., Erokhin, V., Fontana, M.P. 2008. Polymeric electrochemical element for adaptive networks-scale configurations. Using this simulation platform we have shown that memristor networks stimulated with random noise

483

UNCORRECTED 2 Stochastic adaptive control model for traffic signal systems  

E-Print Network [OSTI]

UNCORRECTED PROOF 1 2 Stochastic adaptive control model for traffic signal systems 3 X.-H. Yu a,1 , W.W. Recker b,* 4 a Department of Electrical Engineering, California Polytechnic State University

Detwiler, Russell

484

ADAPTIVE MODELLING IN THE DESIGN OF INTERACTIVE DEVICES  

E-Print Network [OSTI]

of the device. But now consider the problem of adapting the design of a waterwheel to harness wind energy the scope of any process of tweaking the values of the variables characterising the waterwheel. The history

Prabhakar, Sattiraju

485

adapte au petit: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Sciences Websites Summary: par l'extrait suivant : Human-induced climate change is real and beyond. So, given the necessity to adapt to the impacts of these climate...

486

adapted phi29 motor: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: Coordinated Adaptive Robust Contour Tracking of Linear-Motor-Driven Tables in Task Space 1 Li Xu: byao@ecn.purdue.edu Abstract In order to improve the overall contouring...

487

Directed Evolution Study of Temperature Adaptation in a Psychrophilic Enzyme  

E-Print Network [OSTI]

important insights into the molecular basis of pro- tein adaptation. Based on studies of this kind, a number, circular dichroism; HEPPS, N-2-hydroxyethylpiperazine-NH -3-propane sulfonic acid; StEP, staggered

Arnold, Frances H.

488

adaptive extended phenotype: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 PERSPECTIVE Climate change, adaptation, and phenotypic plasticity Environmental Sciences and Ecology Websites...

489

Grid adaptation for functional outputs of compressible flow simulations  

E-Print Network [OSTI]

An error correction and grid adaptive method is presented for improving the accuracy of functional outputs of compressible flow simulations. The procedure is based on an adjoint formulation in which the estimated error in ...

Venditti, David Anthony, 1973-

2002-01-01T23:59:59.000Z

490

Towards verifiable adaptive control for safety critical applications  

E-Print Network [OSTI]

To be implementable in safety critical applications, adaptive controllers must be shown to behave strictly according to predetermined specifications. This thesis presents two tools for verifying specifications relevant to ...

Schwager, Mac

2005-01-01T23:59:59.000Z

491

Adaptive Gaussian Predictive Process Approximation Surya T Tokdar  

E-Print Network [OSTI]

exploration of Gaussian process models, including Bayesian treatments. For theoreti- cal details on commonAdaptive Gaussian Predictive Process Approximation Surya T Tokdar Duke University Abstract We address the issue of knots selection for Gaussian predictive process methodology. Predictive process

West, Mike

492

Run-time optimization of adaptive irregular applications  

E-Print Network [OSTI]

adaptive irregular applications for parallel execution, a common observation is that the effectiveness of the optimizing transformations depends on programs' input data and their dynamic phases. This dissertation presents a set of run-time optimization...

Yu, Hao

2004-11-15T23:59:59.000Z

493

The digestive adaptation of flying vertebrates: High intestinal paracellular absorption  

E-Print Network [OSTI]

The digestive adaptation of flying vertebrates: High intestinal paracellular absorption compensates analysis. Significantly greater amplification of digestive surface area by villi in small birds, also in actively flying vertebrates. digestion gut morphometrics nutrient absorption paracellular uptake Birds have

Mladenoff, David

494

Unsteady adjoint analysis for output sensitivity and mesh adaptation  

E-Print Network [OSTI]

Adjoint analysis in computational fluid dynamics (CFD) has been applied to design optimization and mesh adaptation, but due to the relative expense of unsteady analysis these applications have predominantly been for steady ...

Krakos, Joshua Ambre

2012-01-01T23:59:59.000Z

495

adaptive tree code: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

9 A fast tree-based method for estimating column densities in Adaptive Mesh Refinement codes Influence of UV radiation field on the structure of molecular clouds CERN Preprints...

496

Identifying Recent Adaptations in Large-Scale Genomic Data  

E-Print Network [OSTI]

Although several hundred regions of the human genome harbor signals of positive natural selection, few of the relevant adaptive traits and variants have been elucidated. Using full-genome sequence variation from the 1000 ...

Andersen, KristianG.

497

adaptive speckle imaging: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

a fast readout mode to take short exposures of stellar images corrected by adaptive optics at the ground-based UCOLick Observatory, with integration times of 5 ms and a time...

498

AN ADAPTIVE SAMPLING APPROACH TO INCOMPRESSIBLE PARTICLE-BASED FLUID  

E-Print Network [OSTI]

I propose a particle-based technique for simulating incompressible uid that includes adaptive re nement of particle sampling. Each particle represents a mass of uid in its local region. Particles are split into several particles for ner sampling...

Hong, Woo-Suck

2010-01-16T23:59:59.000Z

499

Adaptive Distributed Parameter and Input Estimation in Plasma Tokamak Heat  

E-Print Network [OSTI]

. Keywords: Thermonuclear fusion, distributed parameter systems, input state and parameter estimation, adaptive infinite-dimensional estimation, Galerkin method 1. INTRODUCTION In a controlled thermonuclear fusion reactor, the plasma thermal diffusivity and heating energy play an important role

Boyer, Edmond

500

Hypermutation and adaptation of experimentally evolved marine Vibrio bacteria  

E-Print Network [OSTI]

Environmental bacteria display tremendous genetic diversity, but we are still learning how this diversity arises and relates to their wide range of habitats. Investigating how bacteria adapt helps us understand their ...

Clarke, Sean Aidan

2013-01-01T23:59:59.000Z