juhan ernits colin: Topics by Science.gov

Sample records for juhan ernits colin

Colin A. McMillan | NREL

Science.gov Websites

Colin A. McMillan Photo of Colin A. McMillan. Colin McMillan Researcher IV-Operations Research Econometrics Research Interests Systems-level energy efficiency analysis Material and energy flows in economies ; Journal of Industrial Ecology 17, no. 5 (October 2013): 700-11. doi:10.1111/jiec.12050 McMillan, C.A., S.J
An introduction to the COLIN optimization interface.

DOE Office of Scientific and Technical Information (OSTI.GOV)

Hart, William Eugene

2003-03-01

We describe COLIN, a Common Optimization Library INterface for C++. COLIN provides C++ template classes that define a generic interface for both optimization problems and optimization solvers. COLIN is specifically designed to facilitate the development of hybrid optimizers, for which one optimizer calls another to solve an optimization subproblem. We illustrate the capabilities of COLIN with an example of a memetic genetic programming solver.
NEWS: Colin Siddons (1913-1999)

NASA Astrophysics Data System (ADS)

Baruch, John; Chapman, Bryan

2000-05-01

Colin Siddons Colin Siddons, who died on 8 November 1999 aged 86, was one of the most brilliant of the generation of physics teachers who came into teaching out of necessity rather than vocation in the 1930s. He elevated physics teaching into an art and it was for his inspirational physics teaching that he won international recognition. He was made an Honorary Life Member of the Association for Science Education, awarded an Honorary Master of Science degree by the University of Leeds in recognition of his `Outstanding Career in Science Teaching', and in 1992 the Institute of Physics awarded him its prestigious Bragg Medal for services to physics education. He was one of those science sons of Bradford who, along with the Noble Prize winner Sir Edward Appleton and the outstanding cosmologist Fred Hoyle, are hardly recognized in their own city. Colin wove together his politics and humanism in a career that could not but collide with the stuffy, class-ridden and prejudiced society of Britain in the thirties. He left Cambridge with a first-class honours degree in Physics, a product of the University Physics laboratories of Thompson and Rutherford, who did so much to break the mould of nineteenth century science, launching science into the modern era. With his degree he applied to work as a Meteorologist at the Air Ministry. His scientific competence was not in doubt but the fact that he read Tolstoy made him unacceptable to the interview panel. In the Britain of the thirties, with a working class background and a father out of work Colin had to get a job. After 83 applications and 13 interviews, in which he learned the hard way that teachers' personal lives were not allowed to deviate from convention, he got his first teaching post in Devon. He soon found that his school governors did not take kindly to teachers publicly challenging the support their local MP was expressing for Hitler and Mussolini. Later, when Colin had returned to Yorkshire, Chamberlain's notorious
Colin Gum and the discovery of the Gum nebula

NASA Technical Reports Server (NTRS)

Kerr, F. J.

1971-01-01

The research of Colin Gum in the field of astronomy is reviewed. It includes a radio survey at 200 MHz, a photographic survey for HII regions in the Southern Milky Way from longitude 220 deg to 20 deg, and a catalogue of 85 physically separate regions. He suggested that certain faint nebulosities were part of a large, nearby H II region excited by gamma Velorum and zeta Puppis. He was also concerned with 21-cm studies.
Colin D. Elliott (1937-2016).

PubMed

Willis, John O; Dumont, Ron

2017-01-01

This article memorializes Colin D. Elliott (1937-2016). For 7 years, in his work as a school psychologist, Elliott studied the ability profiles of children with learning disabilities and the measurement of children's developmental stages. Subsequently, he trained school psychologists for over 20 years at the University of Manchester. In 1983, he made a major, enduring contribution to the field of psychometric assessment in both his home country and the wider field with the publication of the innovative British Ability Scales (BAS). An American version, the Differential Ability Scales (DAS), followed in 1990, and both versions of the test have been widely used and revised several times (BAS 2, BAS 3, and DAS-II). Many of his innovations in those tests have been adopted in other instruments. His other research and many publications focused on individual differences in children's temperament and personality and specific learning difficulties. Elliott moved to the United States in 1992 and was adjunct professor at the Gevirtz Graduate School of Education at the University of California, Santa Barbara. (PsycINFO Database Record (c) 2017 APA, all rights reserved).
Colin A. Greenshields, DC: the Canadian Memorial Chiropractic College’s first graduate

PubMed Central

Brown, Douglas M.

2012-01-01

This biographical study investigates the complex tribulations and impressive accomplishments of Dr. Colin Greenshields. Part I (the Formative Years) goes back to his ancestors in Great Britain and forward to his graduation from CMCC in 1948. Part II (the Professional Years) begins with the opening of Colin’s office in St. Catharines, ON, and proceeds through his professional career and multiple leadership roles to his retirement in 1986. PMID:22675227
HIV / AIDS is a challenge we have to face -- Colin Hollis.

PubMed

2000-01-01

On July 21, 2000, the Asian Forum of Parliamentarians on Population and Development (AFPPD) Malaysia, in cooperation with the UN Population Fund and the UN Development Program (Malaysia), organized the National HIV/AIDS Seminar for Parliamentarians in Kuala Lumpur, Malaysia. During the seminar, Mr. Colin Hollis, secretary general of AFPPD, spoke about the challenge posed by HIV/AIDS on the government. He noted that the epidemic is a part of life and these figures should not only challenge the assumptions of legislators but for them to act as well. He further informed that AFPPD would organize the Asia-Africa Meeting of Parliamentarians and Asia European Dialogue.
Towards a political ontology of state power: a comment on Colin Hay's article.

PubMed

Jessop, Bob

2014-09-01

This article offers some critical realist, strategic-relational comments on Colin Hay's proposal to treat the state as an 'as-if-real' concept. The critique first develops an alternative account of ontology, which is more suited to analyses of the state and state power; it then distinguishes the 'intransitive' properties of the real world as an object of investigation from the 'transitive' features of its scientific investigation and thereby provides a clearer understanding of what is at stake in 'as-if-realism'; and it ends with the suggestion that a concern with the modalities of state power rather than with the state per se offers a more fruitful approach to the genuine issues raised in Hay's article and in his earlier strategic-relational contributions to political analysis. © London School of Economics and Political Science 2014.
"My Business Was Not with Lost Souls and the Underprivileged": The Contribution of Colin Badger (1906-1993) to Adult Education in Victoria, Australia.

ERIC Educational Resources Information Center

Rushbrook, Peter

Colin Badger was an adult educator who contributed to Victorian adult education in Australia. After graduating from the University of Adelaide in 1936, Badger became a tutor for the South Australian Workers Education Association (WEA), where he became aware of the possibilities of adult education. After study in London, he returned to Australia to…
Optical Extinction Measurements of Laser Side-Scatter During Tropical Storm Colin

NASA Technical Reports Server (NTRS)

Lane, John E.; Kasparis, Takis; Metzger, Philip; Michaelides, Silas

2017-01-01

A side-scatter imaging (SSI) technique using a 447 nm, 500 mW laser and a Nikon D80 camera was tested at Kennedy Space Center, Florida during the passing of a rain band associated with Tropical Storm Colin. The June 6, 2016, 22:00 GMT rain event was intense but short-lived owing to the strong west-to-east advection of the rain band. An effort to validate the optical extinction measurement was conducted by setting up a line of three tipping rain gauges along an 80 m east-west path and below the laser beam. Differences between tipping bucket measurements were correlated to the extinction coefficient profile along the lasers path, as determined by the SSI measurement. In order to compare the tipping bucket to the optical extinction data, a Marshall-Palmer DSD model was assumed. Since this was a daytime event, the laser beam was difficult to detect in the camera images, pointing out an important limitation of SSI measurements: the practical limit of DSD density that can be effectively detected and analyzed under daylight conditions using this laser and camera, corresponds to a fairly moderate rainfall rate on the order of 20 mmh (night measurements achieve a much improved sensitivity). The SSI analysis model under test produced promising results, but in order to use the SSI method for routine meteorological studies, improvements to the math model will be required.
Scalp and skull influence on near infrared photon propagation in the Colin27 brain template.

PubMed

Strangman, Gary E; Zhang, Quan; Li, Zhi

2014-01-15

Near-infrared neuromonitoring (NIN) is based on near-infrared spectroscopy (NIRS) measurements performed through the intact scalp and skull. Despite the important effects of overlying tissue layers on the measurement of brain hemodynamics, the influence of scalp and skull on NIN sensitivity are not well characterized. Using 3555 Monte Carlo simulations, we estimated the sensitivity of individual continuous-wave NIRS measurements to brain activity over the entire adult human head by introducing a small absorption perturbation to brain gray matter and quantifying the influence of scalp and skull thickness on this sensitivity. After segmenting the Colin27 template into five tissue types (scalp, skull, cerebrospinal fluid, gray matter and white matter), the average scalp thickness was 6.9 ± 3.6 mm (range: 3.6-11.2mm), while the average skull thickness was 6.0 ± 1.9 mm (range: 2.5-10.5mm). Mean NIN sensitivity - defined as the partial path length through gray matter divided by the total photon path length - ranged from 0.06 (i.e., 6% of total path length) at a 20mm source-detector separation, to over 0.19 at 50mm separations. NIN sensitivity varied substantially around the head, with occipital pole exhibiting the highest NIRS sensitivity to gray matter, whereas inferior frontal regions had the lowest sensitivity. Increased scalp and skull thickness were strongly associated with decreased sensitivity to brain tissue. Scalp thickness always exhibited a slightly larger effect on sensitivity than skull thickness, but the effect of both varied with SD separation. We quantitatively characterize sensitivity around the head as well as the effects of scalp and skull, which can be used to interpret NIN brain activation studies as well as guide the design, development and optimization of NIRS devices and sensors. Copyright © 2013 Elsevier Inc. All rights reserved.
Aircraft Flight Safety: A Bibliography. (La Securite en Vol: Une Bibliographie)

DTIC Science & Technology

1993-12-01

having been installed 93A27135 with the wrong bolts during maintenance. An DRURY , COLIN G. (New York State Univ., analysis of the complex events...accident rates. The REJMAN, MICHAEL H.; SYMONDS, COLIN J.; 0 conclusion made is that, Judgement Training has SHEPHERD, ERIC W. (City of London Polytech...from training 0 software to controlled dynamic simulations 93N19702 conducted with mockups, tooling, and subjects in SYMONDS, COLIN J.; REJMAN
Gateway. Volume 13

DTIC Science & Technology

2003-01-01

Unclassified 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) Hart, Sandra G ; Drury , Colin G ; Hancock, Peter A ; Szalma, James...interventions, thereby improving threat inspection and, ultimately, homeland security. n For more information please contact: Colin G. Drury , Ph.D. University...at Buffalo, SUNY Department of Industrial Engineering 342 Bell Hell Hall Buffalo, NY 14260 A Unified Model of Security Inspection Colin G. Drury
Annual International Conference on Aging Aircraft (2nd) Held in Baltimore, Maryland on 3-5 October 1989

DTIC Science & Technology

1990-02-01

Industrial Inspection Colin G. Drury , Ph.D., The Center for Industrial Effectiveness, State U niversity of N ew York, Buffalo...671 (.0172) TOTAL 780 (.0200) 38,220 (.9800) 39,000 (1.0) Figure 7 212 Industrial Inspection COLIN G. DRURY , PH.D. The Center for Industrial...could well be procedural as However, if the item is in fact faulty, then to when you are searching lower rivets with an 214 Colin G. Drury NDI device to
Accurate nonlinear mapping between MNI volumetric and FreeSurfer surface coordinate systems.

PubMed

Wu, Jianxiao; Ngo, Gia H; Greve, Douglas; Li, Jingwei; He, Tong; Fischl, Bruce; Eickhoff, Simon B; Yeo, B T Thomas

2018-05-16

The results of most neuroimaging studies are reported in volumetric (e.g., MNI152) or surface (e.g., fsaverage) coordinate systems. Accurate mappings between volumetric and surface coordinate systems can facilitate many applications, such as projecting fMRI group analyses from MNI152/Colin27 to fsaverage for visualization or projecting resting-state fMRI parcellations from fsaverage to MNI152/Colin27 for volumetric analysis of new data. However, there has been surprisingly little research on this topic. Here, we evaluated three approaches for mapping data between MNI152/Colin27 and fsaverage coordinate systems by simulating the above applications: projection of group-average data from MNI152/Colin27 to fsaverage and projection of fsaverage parcellations to MNI152/Colin27. Two of the approaches are currently widely used. A third approach (registration fusion) was previously proposed, but not widely adopted. Two implementations of the registration fusion (RF) approach were considered, with one implementation utilizing the Advanced Normalization Tools (ANTs). We found that RF-ANTs performed the best for mapping between fsaverage and MNI152/Colin27, even for new subjects registered to MNI152/Colin27 using a different software tool (FSL FNIRT). This suggests that RF-ANTs would be useful even for researchers not using ANTs. Finally, it is worth emphasizing that the most optimal approach for mapping data to a coordinate system (e.g., fsaverage) is to register individual subjects directly to the coordinate system, rather than via another coordinate system. Only in scenarios where the optimal approach is not possible (e.g., mapping previously published results from MNI152 to fsaverage), should the approaches evaluated in this manuscript be considered. In these scenarios, we recommend RF-ANTs (https://github.com/ThomasYeoLab/CBIG/tree/master/stable_projects/registration/Wu2017_RegistrationFusion). © 2018 Wiley Periodicals, Inc.
Directory of Manufacturing Research Centers

DTIC Science & Technology

1989-06-01

Martin W. 51 Graff, Karl 176 Dornfeld, David 88 Gray, James 76 Doty, Keith 119 Gray, Vic 6 Driels, Morris 142 Green Jr., Robert E. 51 Drury , Colin 39...Buffalo Dr. Colin Drury , Executive Director Mr. Brian Kleiner, Administrative Director Technical areas include cost analysis, strategic planning
Physical Science Rocks! Outreach for Elementary Students

ERIC Educational Resources Information Center

McKone, Kevin

2010-01-01

Students at Copiah-Lincoln Community College (Co-Lin) have been hesitant to take courses in the physical sciences, mostly because of a lack of exposure to them in K-12 or a bad experience in this area. The college is addressing this need by exposing students to the physical sciences early on in their education. The science division at Co-Lin has…
Out of Joint: Independent Air Forces in Democratic Cultures

DTIC Science & Technology

2010-06-01

28 Ian Drury , “Could this be the...America, 104. 31 Colin Clark, “JSF Costs Rocket 50 Percent,” DoD Buzz Online Defense and Acquisition Journal, http://www.dodbuzz.com/2010/03/11...Clark, Colin , “JSF Costs Rocket 50 Percent,” DoD Buzz Online Defense and Acquisition Journal. Corum, James, S., “The Myth of Air Control
Institute for the Study of Human Capabilities

DTIC Science & Technology

1992-08-01

Illinois, and C. S. Watson served as conference chairpersons. Other speakers included Andrew Dillon, Colin Drury , Earl Hunt, Barry Kantowitz, Raja...Parasuraman (Catholic University of America, Washington, D.C.), and Colin Drury (SUNY, Buffalo). Two Speakers from the U.K. were Andrew Dillon, the...research organizations in the U.K. In June, 1992, Ada Simmons, who served as a very capable administrative assistant/office manager/grants accountant
Aging Aircraft Fleets: Structural and Other Subsystem Aspects (le Vieillissement des flottes d’avions militaires : aspects structures et autres sous-systemes)

DTIC Science & Technology

2001-03-01

Science and Technology” – Vol. 7, Plenum Press (New York, 1980), 53-175. 7-1 Human Factors in Aircraft Inspection Colin G. Drury State University of...Page intentionnellement blanche 15-1 Human Factors in Aircraft Maintenance Colin G. Drury State University of New York at Buffalo Department of...c) changing mission requirements, (d) the specter of runaway maintenance costs , (e) concern about safety, (f) impairment of fleet readiness and (g

Human Factors Issues in Aircraft Maintenance and Inspection

DTIC Science & Technology

1989-10-01

Unaided, Colin G. Drury , Ph.D .......................................... A-65 Vigilance and Inspection Performance, Earl L. Wiener, Ph.D .... A-72 Human...effective in the various environments in which they will be used. We also take into account cost of equipment to the airlines and training requirements...Inspection and Review A- 64 The Human Operator as an Inspector: Aided and Unaided Colin G. Drury , Ph.D. Professor of Industrial Engineering SUNY, Buffalo
Human Factors Issues In Aircraft Maintenance And Inspection

DTIC Science & Technology

1990-11-01

Im z Cl) 4 w4 z z w . U .) ** DISPLAY0 00 LUU 40z:- z0 LL62 The Information Environment in Inspection Colin G. Drury , Ph.D. University at Buffalo...54 V. The Information Environment in Inspection Colin G. D ruy...tasks are sequenced within the Job ( Drury &t al., 1987; Shepherd, 1976). From such a Task Description we can determine how the demands of the tasks
A Scalable Fabrication Process for Liquid Crystal Based Uncooled Thermal Imagers

DTIC Science & Technology

2016-02-12

ll.mit.edu). Phillip Bos, Valerie Finnemeyer, Colin McGinty and Douglas Bryant are with the Liquid Crystal Institute at Kent State University, Kent...Crystal-Based Uncooled Thermal Imagers Shaun Berry, Carl Bozler, Robert Reich, Harry Clark Jr., Phillip Bos, Valerie Finnemeyer, Colin McGinty...was aligned to the die features on the wafer with appropriate weight added (Fig. 5b). We used stainless steel bars to apply the weight to the block
FAA-NASA Sixth International Conference on the Continued Airworthiness of Aircraft Structures

DTIC Science & Technology

1995-12-01

Administration, and Colin G. Drury , State University of New York at Buffalo The Aging Aircraft Nondestructive Inspection Validation Center - A R esource for...William T. Shepherd FAA-Office of Aviation Medicine Washington, DC and Colin G. Drury State University of New York at Buffalo Buffalo, NY INTRODUCTION FAA’s...improvement, changing the task, the operator (inspector), machine, or environment as appropriate, e.g., review in Drury , 1992 (Ref. 1). 2. From the
Should Military Officers Study Policy Analysis?

DTIC Science & Technology

2015-01-01

the planning and execution of military Retired Army General Colin Powell signs books at Marine Corps Exchange aboard Marine Corps Base Quantico in...the Joint Chiefs of Staff, General Colin Powell advised the students: You are about at that point in your career now . . . when you have to have a...context and how politics works in Washington. It’s not a dirty business. It’s the business that the “good guys” upstairs put in place. Anybody who says
The Maritime Strategy Debates: A Guide to the Renaissance of U.S. Naval Strategic Thinking in the 1980s.

DTIC Science & Technology

1988-02-24

strategy, as well as strike warfare and tactical innovations). ** Gray, Colin , "Maritime Strategy", Proceedings, February 1986, pp 34-42. (Supportive...driven document). ** Gray, Colin S., "Keeping the Soviets Landlocked: Geostrategy for a Maritime America", The National Interest, Summer 1986, pp 24-36...latter on the role of U.S. and allied submarines in the Maritime Strategy: "We dare not go it alone"). ** Drury , F., "Naval Strike Warfare and the
Flow Encountering Abrupt Topography

DTIC Science & Technology

2013-09-30

Colin at the Coral Reef Research Foundation and Paul Collins, who has extensive experience with such data). Helen Reef Concerted UCTD measurements...sensors, weights , 45 m of line, and a float) which were arrayed around Helen Reef nominally on the 90-m isobath using Revelle’s workboat. Colin (CRRF...the main islands of Palau and diverts around the south and north ends of the island group (Figure 1, left and right; Section ). At Helen Reef and Toby
The Value of an Independent Royal Air Force - Breaking the Oscar Wilde Paradigm in British Defence

DTIC Science & Technology

2010-06-01

discussion. 11 Ian Drury , Defence Correspondent, "Could this be the end for the RAF? Military chief refuses to rule out merger with Navy as cuts loom...However, would it provide the flexibility to be effective if a different threat emerged in ten years time? In contrast to Smith‟s thesis, Colin ...1984), 88. 25 General Rupert Smith, The Utility of Force – The Art of War in the Modern World (New York, NY: Vintage Books, 2008), 5. 26 Colin
Beat-to-beat agreement of noninvasive tonometric and intra-radial arterial blood pressure during microgravity and hypergravity generated by parabolic flights.

PubMed

Normand, Hervé; Lemarchand, Erick; Arbeille, Philippe; Quarck, Gaëlle; Vaïda, Pierre; Duretete, Arnaud; Denise, Pierre

2007-12-01

Accurate measurement of beat-to-beat arterial blood pressure is essential for understanding the cardiovascular adaptation to weightlessness; however, the intra-arterial standard of beat-to-beat blood pressure measurement has never been used during space flight because of its invasive nature. The aim of the present study was to compare noninvasive radial artery tonometry blood pressure measurement with intra-radial pressure measurement during microgravity and hypergravity generated by parabolic flights. Two study participants, equipped with an intra-radial pressure line on the left arm and a Colin CBM-7000 (Colin Corp., Komaki City, Japan) beat-to-beat pressure measurement apparatus on the right arm, were studied in a supine position, during parabolic flights on board of the Airbus A300 OG of the Centre National d'Etudes Spatiales. The mean and standard deviations of the beat-to-beat difference between tonometric and intra-radial blood pressure were calculated for systolic and diastolic arterial pressure in the three gravity conditions (1g, 0 g and 1.8 g) experienced during parabolic flight. The Colin CBM-7000 met the specifications required by the Association for the Advancement of Medical Instrumentation in the 0 g environment. Gravity, however, significantly affected the difference between tonometric and intra-arterial blood pressure, possibly owing to the effect of gravity on the apparent weight of the device and the corresponding calibration factor. We conclude that the Colin CBM-7000 can be used with confidence during space flight.
Women are the answer. Interview by Colin Parish.

PubMed

Lewis, Stephen

Women are suffering in far greater numbers than men in the HIV/AIDS disaster in Africa. Stephen Lewis, the United Nations special envoy for HIV/AIDS in Africa, says a global approach is needed to stem the tide of misery. Nurses can play their part too.
The Journal of Public Inquiry, Fall/Winter 2012-2013

DTIC Science & Technology

2013-01-01

NASA has about 2.6 million Twitter followers.3 The General Services Administration recently launched a social media registry where government...Juhans and Frank Mazurek ( NASA OIG); Epin Christensen (Smithsonian OIG); Sonya Zacker (PBGC); Jonathan Lasher (SSA OIG); David Barnes, Alexis...late 2009, the NASA OIG and the FBI opened a joint criminal investigation into the activities of a company known as Rove Digital, which according
Ten on Top from Down Under.

ERIC Educational Resources Information Center

Nist, Joan

1988-01-01

Discusses some works by the following Australian writers of young adult literature: Ivan Southall, Patricia Wrightson, Bill Scott, Ruth Manley, Allan Baillie, Colin Theile, Ruth Park, Lee Harding, Robin Klein, and Eleanor Spence. (MM)
American Porphyria Foundation

MedlinePlus

... helping us all connect with each other." ~ Amy Rose Burke, PCT “APF is not only a support ... Darnisha Davenport Liz Cooke Nicole Clarke Louise Coomber Rose and Colin ~ Living with Porphyria ~ Video Jessi Brill ...
Nuclear Magnetic Resonance Spectroscopy Applications: Proton NMR In Biological Objects Subjected To Magic Angle Spinning

DOE Office of Scientific and Technical Information (OSTI.GOV)

Wind, Robert A.; Hu, Jian Zhi

2005-01-01

Proton NMR in Biological Objects Submitted to Magic Angle Spinning, In Encyclopedia of Analytical Science, Second Edition (Paul J. Worsfold, Alan Townshend and Colin F. Poole, eds.), Elsevier, Oxford 6:333-342. Published January 1, 2005. Proposal Number 10896.
78 FR 53422 - Notice of Request for Revision to and Reinstatement of an Expired Information Collection; Bees...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-08-29

... Expired Information Collection; Bees and Related Articles AGENCY: Animal and Plant Health Inspection... information collection associated with the regulations for the importation of bees and related articles into... and related articles, contact Dr. Colin Stewart, Senior Entomologist, Pest Permit Evaluations, PPQ...
Popular Education and Social Movements in Scotland Today.

ERIC Educational Resources Information Center

Crowther, Jim, Ed.; Martin, Ian, Ed.; Shaw, Mae, Ed.

The following papers are included: "Foreword" (Colin Kirkwood); "Introductory Essay: Popular Education and Social Movements in Scotland Today" (Ian Martin); "Popular Education and the Struggle for Democracy" (Jim Crowther); "Social Movements and the Politics of Educational Change" (Lindsay Paterson);…
International Perspectives on Lifelong Learning.

ERIC Educational Resources Information Center

Holford, John, Ed.; Jarvis, Peter, Ed.; Griffin, Colin, Ed.

This book contains 30 papers providing international perspectives on lifelong learning. The following papers are included: "Edgar Faure after 25 Years" (Roger Boshier); "Public Rhetoric and Public Policy" (Colin Griffin); "Lifelong Learning and the European Union" (Barry J. Hake); "Critical Perspectives and New…
Education and Work.

ERIC Educational Resources Information Center

Poole, Millicent E., Ed.

This book contains 13 papers that identify major education and work issues related to post-compulsory schooling in Australia. The following papers are included: "Changing Policy Perspectives" (Millicent E. Poole); "A Historical Essay" (Andrew Spaull); "A Philosophical Perspective" (Colin W. Evers); "School to…
MYSID CRUSTACEANS AS POTENTIAL TEST ORGANISMS FOR THE EVALUATION OF ENVIRONMENTAL ENDOCRINE DISRUPTORS: A REVIEW

EPA Science Inventory

Verslycke, Tim A., Nancy Fockedey, Charles L. McKenney, Jr., Stephen D. Roast, Malcolm B. Jones, Jan Mees and Colin R. Janssen. 2004. Mysid Crustaceans as Potential Test Organisms for the Evaluation of Environmental Endocrine Disruption: A Review. Environ. Toxicol. Chem. 23(5):12...
Fuel Cell Power Systems for Navy Applications

DTIC Science & Technology

1984-05-01

DAMES & MOORE LIBRARY LOS ANGELES. CA DRURY COLLEGE Physics Dept. Springfield. MO FLORIDA ATLANTIC UNIVERSITY Boca Raton. FL (McAllister) FOREST... Colin Ramage) Dept of Meteorology Honolulu HI: HONOLULU. HI (SCIENCE AND TECH. DIV.); Natd Energy Inst (DR Neill) Honolulu HI UNIVERSITY OF ILLINOIS (Hall

Higher Education: The Past Reappraised.

ERIC Educational Resources Information Center

Kaestle, Carl F.

1983-01-01

Reviews "American Collegiate Populations. A Test of the Traditional View," by Colin B. Burke, 1982, New York University Press (distributor, Columbia University Press). Indicates that the book (considering such topics as college foundings, enrollment levels, graduates' careers, regional differences) improves the numerical record and exposes…
Language and Politics in the United States and Canada: Myths and Realities.

ERIC Educational Resources Information Center

Ricento, Thomas, Ed.; Burnaby, Barbara, Ed.

This collection includes the following essays on language and politics in North America: "Respecting the Citizens: Reflections on Language Policy in Canada and the United States" (Colin H. Williams); "The Politics of Language in Canada and the United States: Explaining the Differences" (Ronald Schmidt, Sr.); "Demographic…
Education for Democracy: Reasons and Strategies

ERIC Educational Resources Information Center

Edelstein, Wolfgang

2011-01-01

According to social scientists Herfried Munkler in Germany and Colin Crouch in England, major developments in Western industrial societies--individualism, increasing social complexity, globalisation--present serious threats to basic requirements of stable societies and expose democracy to the corrosion of its socio-moral resources such as social…
Participation Training

ERIC Educational Resources Information Center

Treff, Marjorie

2006-01-01

Historically, adult education has focused on civic and social responsibility, participatory democracy, liberatory social action, and equity. Colin and Heaney (2001) claim that democracy in education requires an environment in which students are free to discuss their varied experiences and "confront intellectual censorship," often disguised as…
Process Performance: Words of Wisdom

DTIC Science & Technology

2012-08-01

themselves. This is the trap Friedrich Nietzsche spoke of when he said, “Many are stubborn in pursuit of the path they have chosen, few in pursuit of...BrainyQuote.com 22. Powell, Colin. . Quotationspage.com. Retrieved September 28, 2011, from quotationspage.com 23. Nietzsche , Friedrich
Intelligence Secrecy and Transparency: Finding the Proper Balance from the War of Independence to the War on Terror (Strategic Insights, Volume 6, Issue 3, May 2007)

DTIC Science & Technology

2007-05-01

NIE), requested by Congress, prior to the House and Senate vote to authorize the President to use force against Iraq. Secretary of State Colin ... Bamford , The Puzzle Palace (London: Penguin Books, 1982), and David Kahn, Seizing the Enigma: The Race to Break the German U-Boat Codes 1939-1943
XIAP as a Molecular Target for Therapeutic Intervention in Prostate Cancer

DTIC Science & Technology

2005-10-01

Rumble, Rebecca A. Csomos, Christine M. Komarck‡, Gabriel N. Maine‡, John C. Wilkinson, Marty W. Mayo, and Colin S. Duckett‡** From the...Wiltshire, T., Batalov, S., Lapp, H., Ching, K. A., Block, D., Zhang, J., Soden, R., Hayakawa, M., Kreiman , G., Cooke, M. P., Walker, J. R., and
Contributions to Clinical Neuropsychology.

ERIC Educational Resources Information Center

Benton, Arthur L., Ed.

Seven aspects of neuropsychology are discussed including modern trends in neuropsychology by Klaus Poeck, the behavioral effect s of commissural section by George Ettlinger and Colin B. Blakemore, neuropsychological studies of phantom limbs by Sidney Weinstein, and problems in the anatomical understanding of aphasias by Norman Geschwind. Also…
Problematising the Intellectual Gaze of the Educational Administration Scholar

ERIC Educational Resources Information Center

Eacott, Scott

2015-01-01

Whereas epistemological debates raged in educational administration during the Theory Movement, or inspired by intervention from Thom Greenfield, Richard Bates or Colin Evers and Gabriele Lakomski, epistemology and the quest for the scientific study of educational administration has somewhat diminished in the era of managerialism and the pursuit…
U. S. Naval Forces, Vietnam Monthly Historical Summary for July 1968

DTIC Science & Technology

1968-08-04

districts killing 62 Viet Cong, capturing 5 prisoners and destroying 18 bunkers and 20 booby traps . Friendly casualties amounted to 1 soldier killed and...totals as of this writing are not availelale die ,o continuing action, 1 ."t. -S’ 2 -*--. - - -.-~ Colin DECCAN MEDSICHOLOGICAL AMD CIVIC ACTIOIN OPM
Prehospital Interventions Performed in a Combat Zone: A Prospective Multicenter Study of 1,003 Combat Wounded

DTIC Science & Technology

2012-01-01

Howell, Maj Dean Hudson, LTC Marjorie Johnson, MAJ Colin Meghoo, MAJ Kyle Remick, MAJ Felecia Rivers, LTC James Sebesta, MAJ Leilani Siaki, Maj Adrian K... Stull , CPT Martha Swift, Capt Travis Taylor, Maj Ryan P. Tyner, Maj Gregory Watson, CPT Jennifer G. Ysmael. DISCLOSURE The views expressed in this
WOCSDICE󈧇 The 27th Workshop on Compound Semiconductor Devices and Integrated Circuits Held in Europe May 26 - 28, 2003 Forigen, Switzerland

DTIC Science & Technology

2003-05-28

Rodrigues-Girones, M. Saglam, A. Megej, H.L. Hartnagel vi Recent Advances, Remaining Challenges in Wide Bandgap Semiconductors Colin ...R. H. Friend, and H. Sirringhaus, Science, 299, pp. 1881-1884, 2003. 19. C. J. Drury , C. M. J. Mutsaers, C. M. Hart, M. Matters, and D. M. de Leeuw
Working Knowledge: The New Vocationalism and Higher Education.

ERIC Educational Resources Information Center

Symes, Colin, Ed.; McIntyre, John, Ed.

The chapters of this book analyze partnerships between business enterprises and higher education in the context of knowledge capitalism. The chapters are: (1) "Working Knowledge: An Introduction to the New Business of Learning" (Colin Symes and John McIntyre); (2) "Learning for Real: Work-based Education in Universities" (David…
We Remember 2015 - A Video Memorial

NASA Image and Video Library

2015-06-10

Video tribute to 12 members of the NASA Astrobiology community who passed away since the 2012 AbSciCon meeting. Tributes to: Dick Holland, Bob Wharton, Carl Woese, David McKay, Tom Wdowiak, John Billingham, Bishun Khare, Tom Pierson, Colin Pillinger, Katrina Edwards, Martin Brasier and Alberto Behar.
IFLA General Conference, 1987. Division of Management and Technology. Library Building and Equipment Section. Information Technology Section. Papers.

ERIC Educational Resources Information Center

International Federation of Library Associations, The Hague (Netherlands).

The six papers in this collection focus on library buildings and equipment and information technology: (1) "Library Equipment in a Changing Library Environment" (Margaret Beckman, Canada); (2) "The New Building for the British Library" (Colin St. John Wilson, United Kingdom); (3) "User Interaction with Online Catalogue" (Stephen Walker, United…
The Model for the Council of Adult Education? Beyond the Myth.

ERIC Educational Resources Information Center

Dadswell, Gordon

2003-01-01

Presents evidence demonstrating that, although Colin Robert Badger claimed to have originated the model for Australia's Council of Adult Education, another unacknowledged model had actually formed the basis of it. States that the Badger narrative has become an enduring myth in Australian adult education history. (Contains 20 archival and 36…
Work-Based Learning: A New Higher Education?

ERIC Educational Resources Information Center

Boud, David, Ed.; Solomon, Nicky, Ed.

This three-part book contains 16 chapters exploring work-based learning from a theoretical and case-study perspective in the United Kingdom. Part 1, Framing Work-based Learning, contains the following four chapters: "New Practices for New Times" (David Boud, Nicky Solomon, and Colin Symes); "Repositioning Universities and Work"…
A Plea to Internationalize Our Black Youth

ERIC Educational Resources Information Center

McLellan, Carlton E.

2005-01-01

Michael Jordan, Oprah, Muhammad Ali--three African Americans that most of the world recognizes. However, former Secretary of State Colin Powell, Powell's successor Dr. Condoleezza Rice, and U.N. Secretary General Kofi Annan are probably equally as recognizable around the world. They are not just prominent Black leaders in their respective…
Community Colleges and Higher Education: A Joint Venture.

ERIC Educational Resources Information Center

Chambers, Sharon M.; Weeks, Sandy R.; Chaloupka, Larry J.

2003-01-01

Describes the teacher preparation program at Colin County Community College District (CCCCD), Texas, the first community college program in the nation authorized to prepare teachers. Also reports that Texas A&M University-Commerce has joined with CCCCD to provide a bridge between the community college program and graduate degrees at the…
Operational Maneuver and Fires: A Role for Naval Forces in Land Operations

DTIC Science & Technology

1989-05-15

34 Military Review, (February 1983), 13-34. Drury , M.T., "Naval Strike Warfare and the Outer Battle." Naval Forces, Vol.VII, (1986), 46-49. Fedyszn...Fort Leavenworth, KS., June 1987. Martin, Cormander Colin L., "Tomahawk Technology and the Maritime Strategy." Paper, Naval War College, Newport, RI

Higher Education Research & Development, Volume 3, Number 1, 1984.

ERIC Educational Resources Information Center

Powell, J. P., Ed.

Seven articles on higher education in Australia are presented, along with two review articles. "Operation Bootstrap--Reflections of a Staff Developer" (Colin Flood Page) offers views on various aspects of college learning and teaching. Findings of a study on student learning through essay-writing are presented in "Essay Planning and…
Cajal bodies are developmentally regulated during pollen development abd pollen tube growth in Arabidopsis thaliana

USDA-ARS?s Scientific Manuscript database

Cajal bodies aree structures in the nucleus of cells: they are involved in several aspects of gene expression, such as in processing transcipts. The presence of Cajal bodies can be measured with a flourescent protien of a protien called Colin which is abundant in Cajal bodies. This paper shows that ...
Relating Expected Inventory Backorders to Safety Stock Investment Levels.

DTIC Science & Technology

1981-09-01

Theory," RM-4185-PR. The Rand Corporation, Santa Monica CA, September 1964. 105 11. Haeussler, Ernest F. Jr., and Richard S. Paul. Introduc- tory...14. Lewis, Colin D. Demand Analysis and Inventor4 Control. Westmead, England: Saxon House D.C. Heath Ltd., 1975. 15. Lippert , Keith Wayne. "An
Miles To Go, Promises To Keep: Higher Education in the 21st Century.

ERIC Educational Resources Information Center

Chase, Hank

2000-01-01

Reports on the July 2000 annual meeting of the National Association of College and University Business Officers. Highlights included a keynote luncheon speech by Colin Powell and general session speeches on such topics as the social effects of the technological revolution on campus, college-business partnerships, college-community partnerships,…
Overview of the Science of Science Policy Symposium

ERIC Educational Resources Information Center

Lane, Julia, Ed.; Black, Dan, Ed.

2012-01-01

Governments across the world are investing large amounts of money in scientific research, often with the belief that such investments will increase economic growth--yet the scientific evidence for this belief is, as Colin Macilwain notes, "patchy." Science agencies are charged with identifying and funding the best science, yet there is little…
'Right-to-Work' Laws and Economic Development in Oklahoma. Briefing Paper.

ERIC Educational Resources Information Center

Mishel, Lawrence, Ed.

The bulk of this position paper consists of statements in opposition to a September 2001 referendum on adopting 'right-to-work' (RTW) legislation in Oklahoma. The statements are by Joan Fitzgerald, William Sschweke, Raymond Hogler, Steven Shulman, Stephan Weiler, Ann Markusen, Robert G. Lynch, David R. Howell, James Galbraith, Colin Gordon, Wim…
Compassion: A Teaching Tool?

ERIC Educational Resources Information Center

Reeves, Kate

2009-01-01

Colin is a kindergartener who acted like a three-year-old with an attitude. This author, his kindergarten teacher, had tried visual schedules, positive and negative reinforcement, ignoring disruptive behavior, clear expectations and choices, and nothing was curbing his defiant behaviors. So far, all he had learned was that grown-ups were always…
Public Affairs Training for the Army’s Officer Corps: Need or Neglect?

DTIC Science & Technology

1983-06-06

Individual Research Project, No. AD-783-802. Carlisle Barracks, Pennsylvania, 1974. McKenzie, Colin . "A Look at the News Media." US Army War College Mono...SAID IN 1978 Cronkite, Walter. "On Value of Newspaper Training for TV Reporters." San Francisco Examiner and Chronicle. March 5, 1978, p. 38. Drury
Opening Research to Intensities: Rethinking Disability Research with Deleuze and Guattari

ERIC Educational Resources Information Center

Mercieca, Daniela; Mercieca, Duncan

2010-01-01

This paper begins by illustrating how the social model of disability currently dominant in emancipatory disability research projects a reality "out there". Drawing on John Law's (2004) writing on how statements are turned into taken-for-granted assumptions, we argue that the model of research exemplified by Colin Barnes (2002) stifles rather than…
The Transition From Event Reports to Measurable Organizational Impact: Workshop Proceedings Report

DTIC Science & Technology

2014-03-01

Airlines Colin Drury - - - - - - - - - - - - - Applied Ergonomics Douglas Farrow - - - - - - - - - - - - - - - FAA AFS-280 Terry Gober... cost , at their Seattle location. Also, Boeing supports presentations regarding MEDA at international conferences, which greatly increased the number...approach to a true safety culture involves human factors and error management training that includes management; a Just Policy and accountability , an
Psychopathic disorder: a category mistake? A legal response to Colin Holmes.

PubMed Central

Mackay, I

1991-01-01

Holmes is concerned with a conflict between law and medicine about the problem of psychopathy, in particular as it relates to homicide. He looks for a consistent set of legal principles based on a variety of medical concepts and in doing so criticises the court for its commonsense approach, its disregard for medical evidence and for employing lay notions of responsibility and illness. This commentary explores how Holmes's notions fit into existing legal rules and explains how the court seeks the assistance of medical evidence when looking at the evidence as a whole to enable it to decide upon issues of defence, which involve legal and not medical concepts. PMID:1870087
An Investigation of the Distribution of Radiation Scattered by Optical Surfaces

DTIC Science & Technology

1975-08-01

Profile Inversion Workshop, Ames Research Center, Moffett Field, California, L. Colin, ed., pp. 6-34 to 6-37 ( NASA TM X-62, 150). (Available from th...Surface EM Scattering Solutions," IEEE Trans. AP-21:393-396. Judd, D. B., 1967, "Terms, Definitions, and Symbols in Reflectometry ," J. Opt. Soc. Am. 57:445
The University of California's Use of the iNACOL Standards for Online Classes

ERIC Educational Resources Information Center

Heller, Kevin

2018-01-01

The Colin standards for online courses are widely used by educational institutions across the world, including the University of California (UC), which uses them in its formula for determining whether or not a high school course can be used to meet minimum eligibility requirements for admission to the University. To date, however, there has been…
Sudan Genocide Declaration Stirs the World

ERIC Educational Resources Information Center

Social Education, 2004

2004-01-01

One week after Secretary of State Colin Powell declared that the killings, rapes and other atrocities committed in Darfur amount to "genocide," in mid-September the United Nations' World Health Organization issued new figures saying 6,000 to 10,000 people are dying per month there in one of Africa's worst humanitarian crises. Powell had…
XIAP as a Molecular Target for Therapeutic Intervention in Prostate Cancer

DTIC Science & Technology

2007-10-01

receptor corepressor Clara Hwang Æ Veda N. Giri Æ John C. Wilkinson Æ Casey W. Wright Æ Amanda S. Wilkinson Æ Kathleen A. Cooney Æ Colin S. Duckett Received...including BRCA1, histone deacetylases (HDAC), and members of the polycomb group (PcG) of proteins. Clara Hwang and Veda N. Giri contributed equally to
Elite Entanglements and the Demand for a Radically Un/Ethical Position: The Case of Wienie Night

ERIC Educational Resources Information Center

Gaztambide-Fernández, Rubén A.

2015-01-01

Sociologist Colin Bell pointed out that sociology "can be easily seen as thoroughly implicated in the power structure of society" (1978, p. 25). One way in which this implication is expressed is the way that ethical concerns have become institutionalized and regimented. This article puts forward the argument that a true study of elites…
Confirming Life

ERIC Educational Resources Information Center

Pereira-Webber, Colin; Pereira-Webber, Evelina

2014-01-01

A death within a school is a traumatic event that touches everyone in the school community. How teachers, students, and administrators respond to loss has ongoing implications for the adaptation of all involved. Therapists Colin Pereira-Webber and Evelina Pereira-Webber explore the topic of loss within a school through a written dialogue. Drawing…
Word Magic: Poetry as a Shared Adventure.

ERIC Educational Resources Information Center

McVitty, Walter, Ed.

Written by teachers and poets, this book offers insights into the nature of poetry and the ways in which children can be taught to enjoy reading and writing poetry. The book contains the following articles: "Poetry and the Magic of Words," by Colin Thiele; "Poetry and the Child," by Charles Causley; "A Verse Along the…
The Effect of Activity-Based Costing on Logistics Management

DTIC Science & Technology

1993-01-01

Row, 1980. 49. Drury , Colin , "Activity-Based Costing ," Management Accounting CIMA, Vol. 67, No. 8 (September 1989), pp. 60-66. 50. Dugdale, David...99 Cost Accounting Applications Within Logistics ..................................... 116 Activity-Based Costing Applications Within the...Comparison of Direct Product Profitability (DPP) and Activity-Based Costing (ABC) ....... 91 5. Comparison of Traditional Cost Accounting with Activity
How--and Why?!--Does One Go from the Classroom to the Dark Side?

ERIC Educational Resources Information Center

Irvine, Colin

2015-01-01

This essay describes Colin Irvine's process of applying and interviewing for the position of Vice President for Academic Affairs and Dean of the College at his alma mater. Irvine recounts the timeline of events from being notified of the position at the college to awaiting the notification of whether or not he was accepted for the position. He…

The Rose Report [Continued]: "The Invisible Worm"

ERIC Educational Resources Information Center

Drummond, Mary Jane

2009-01-01

While Colin Richards' article is a trenchant analysis of the big themes and missed opportunities of the Rose Report, this response examines some of the small print. It concludes that the document is disfigured by many minor blemishes, and is also fatally flawed by a crude misapprehension of the nature of progress and the purpose of education.
Confessions of a Tenured Professor: Relax, Don't Be So Banal

ERIC Educational Resources Information Center

Irvine, Colin

2010-01-01

Colin Irvine confesses that, even after earning tenure, he seems unable to slow down and stop working. He describes his year in Norway and notes that he struggles with conflicting desires. On the one hand he feels obligated to engage the country and culture, and say "yes" to all opportunities. On the other hand, liberated from committee…
Education Policy and Practice "under" New Labour: An Epistolary Critique

ERIC Educational Resources Information Center

Richards, Colin

2010-01-01

Since the election of 1997 New Labour's education policy has been subject to variety of forms of critique--in this journal and others. One of the sources for such critique has been a barrage of letters unleashed for over a decade by Colin Richards in the "Times Educational Supplement". Here are reproduced a self-edited selection of his…
The Civilian Putsch of 2018: Debunking the Myth of a Civil-Military Leadership Rift

DTIC Science & Technology

2002-04-01

25 Reflect the Moral of the Society ...threat to the republic and requires a martial culture that differs from the civil society at large. There is no reason why we should regret this...forefront in 1993, was the Chairman of the Joint Chiefs of Staff (CJCS), General Colin Powell, who resisted President Clinton‘s Balkan plans and
The Ingredients of a Public-Private Partnership in Education: The Global Development Alliance Model School Expansion Project in Nicaragua

ERIC Educational Resources Information Center

Galisson, Kirsten; Brady, Kristin

2006-01-01

In May 2001, U.S. Secretary of State Colin Powell announced the establishment of the Global Development Alliance (GDA) as a key part of a new business model for the United States Agency for International Development (USAID). The GDA initiative aims to launch best practices in public-private partnerships around the world. The model is designed to…
Learning From Loneliness.

ERIC Educational Resources Information Center

Geller, Robert

1967-01-01

Allan Sillitoe's "The Loneliness of the Long Distance Runner" and the movie version of that novel capture the imagination of students because of the stature of the hero, Colin Smith. He refuses to "play it cool" or to "cop out"; he loses his race and wins his manhood. To the students, he carries the command to hold on…
Municipal Finance: The Duke Law Journal Symposium.

ERIC Educational Resources Information Center

Duke Univ., Durham, NC.

This special issue addresses many of the more salient aspects of municipal finance. Colin Blaydon and Steven Gilford survey a number of social and economic issues that lie at the heart of any attempt to deal meaningfully with the current urban crisis. Donna Shalala and Carol Bellamy focus on the state's attempts to meet the financial emergency…
Multi-Ferroic Polymer Nanoparticle Composites for Next Generation Metamaterials

DTIC Science & Technology

2016-06-15

IPCMS has synthesized corona shaped magnetite nanostructures that acquire collective assembly during synthesis. These nanostructures displaying a...Moldovan, Ovidiu Ersen, Dominique Begin, Jean-Marc Grenèche, Sebastien Lemonnier, Elodie Barraud, Sylvie Begin-Colin. Two types of corona magnetite...1 MHz- 1 GHz). The permeability values achieved by composites made from collectively assembled corona magnetite nanoparticles are significantly
Confessions of a Tenured Professor: Knowing Your Place--A "Professor" and "Travel-Writing Teacher" Returns to Scotland on a Study-Abroad Trip

ERIC Educational Resources Information Center

Irvine, Colin

2010-01-01

Colin Irvine shares that being "lashed to the mast" by virtue of his recent tenure, he often finds himself seeking imaginative ways within the profession to turn trips and long weekends into work. This particular trip was one in which he ended up heading off to Scotland with mostly Medieval Studies majors on a study-abroad trip. Having…
Mobilization Bibliography: Periodical Articles (1915 - 1982),

DTIC Science & Technology

1983-10-01

12-13+. 131 Goldich, Robert L. "Mobilization for the Apocalypse." ARMY 28 (May 1978): 22-25+. 132 Gray, Colin S. "The Military Requirements of U.S...the Last Year; The Obstacles Which Stand in the Way of an All-Out Record; Some Problems and Proposals." NEW MASSES (December 8, 1942): 5-7. 632 Drury
Beyond Pain: Coercing Violent Non-State Actors

DTIC Science & Technology

2010-01-01

October 19 1993.105 In the end, it took independent negotiators with unsurpassed credibility—Jimmy Carter, Sam Nunn, and Colin Powell—to...Penguin Press, 2004. Cooper, Drury . Economic Sanctions and Presidential Decisions: Model of Political Rationality. Gordonsville, VA...also Drury Cooper, Economic Sanctions and Presidential Decisions: Model of Political Rationality (Gordonsville, VA: Palgrave Macmillan, 2006). 71
Defense.gov Special Report: Asian American and Pacific Islander Heritage

Science.gov Websites

Admiral Earns Honors for Work in Navy Medicine The Director of the U.S. Navy's Medical Corps received the Chinese Hospital Medical Staff 39th Annual Award during a ceremony in San Francisco. Rear Adm. Colin G . Chinn, director, Medical Resources Plans and Policy division, Office of the Chief of Naval Operations
Technical Documentation Challenges in Aviation Maintenance: A Proceedings Report

DTIC Science & Technology

2012-11-01

ATP Keith Frable - -- - -- - -- - - ASO-27 Colin Drury - -- - -- - -- - - Applied Ergonomics Lynn Pierce - -- - -- - -- - - AEG-15 Dave...threaten safety and cost the industry millions of dollars. The workshop format combined key presentation topics, followed by structured discussion and...critical and can produce very different results for the end user, depending on the authoring tools and formatting selected. Cost influences document
Principles in Practice and the "Footprint" of the US Student Abroad

ERIC Educational Resources Information Center

Elliott, Timothy Lynn; Johnson, Julie

2007-01-01

Colin Smith's experience in South Africa and his research on the role of storytelling in the Xhosa culture met all of the guiding principles of Brigham Young University's (BYU) International Field Study Program: that students are prepared to do serious research in a topic that relates to their major, and that they will be in the host country for…
"Fleeting Pockets of Anarchy": Streetwork. The Exploding School

ERIC Educational Resources Information Center

Burke, Catherine

2014-01-01

Colin Ward (1924-2010) was an anarchist and educator who, together with Anthony Fyson, was employed as education officer for the Town and Country Planning Association in the UK during the 1970s. He is best known for his two books about childhood, "The Child in the City" (1978) and "The Child in the Country" (1988). The book he…
Joint Operating Environment 2035: The Joint Force in a Contested and Disordered World

DTIC Science & Technology

2016-07-14

environment. Next, Section 2 explores how the intersection and interaction of these changes might impact the character of war in the future. Finally, Section...ideas about how changes to conflict and war might impact the capabilities and operational approaches required by the future Joint Force. These...1 Colin Gray, Another Bloody Century, (2005), p. 43. 2 challenges that will impact the
The Joint Force in a Contested and Disordered World

DTIC Science & Technology

2016-07-14

environment. Next, Section 2 explores how the intersection and interaction of these changes might impact the character of war in the future. Finally, Section...ideas about how changes to conflict and war might impact the capabilities and operational approaches required by the future Joint Force. These...1 Colin Gray, Another Bloody Century, (2005), p. 43. 2 challenges that will impact the
Strategy and the Strategic Way of Thinking

DTIC Science & Technology

2007-01-01

military institutions; and economic and technological factors.10 Accordingly, strategy can be said to constitute a continual dialogue be- tween policy on...logistical, social, and technological .12 Building on the foundation established by Clausewitz and Sir Michael, Colin Gray has provided a comprehensive...strategic theory and doctrine, and technology . His third category corresponds to “war proper”: military operations; command; geography; friction, chance
Alternate Energy Research and Technology Challenges in the New Millennium

DTIC Science & Technology

2010-09-01

Methyl Ester (FAME) Hydro-treating (Hydrogen) Green diesel Multiple Biomass (Municipal Waste) Biomass to Liquid (BTL Gasification ) (formation...the depletion The Coming Oil Crisis, Colin J. Campbell 10  • Conservation / Efficiency -- not enough Renewables • Biomass ...candidates for Navy / DOD) 11  Biomass : A Potential Renewable Energy Source 12  • The oldest known energy source since the discovery of fire
Strategists Break All the Rules

DTIC Science & Technology

2012-05-17

without my lovely bride, best friend, and harshest critic, Dr. Eileen U. Godinez, I would never have attempted this school or this career choice...Senge, 73. 42 Colin S. Gray , The Strategy Bridge: Theory For Practice (Oxford: Oxford University Press, USA, 2011), 168. 15 the conventional wisdom...world wars, that an apolitical army meant a professional army. 70 Ambrose, 131. 71 Gray

Annual Report 2011-2012 (RAND National Security Research Division)

DTIC Science & Technology

2012-01-01

Charles Nemfakos, Chad J . R . Ohlandt, Caroline Reilly, Rena Rudavsky, Jerry M . Sollinger, Katharine Watkins Webb, and Carolyn Wong, MG-1171/1-OSD...Assessment of Marine Corps Intelligence, Christopher Paul, Harry J . Thie, Katharine Watkins Webb, Stephanie Young, Colin P . Clarke, Susan G . Straus...counterinsurgency campaign. For more information, see Reintegrating Afghan Insurgents, Seth G . Jones, OP-327-MCIA, 2011 . Online at www .rand .org/pubs
A Hydrocarbon Fuel Flash Vaporization System for a Pulsed Detonation Engine

DTIC Science & Technology

2006-12-01

Experiments were performed in the Air Force Research Laboratory (AFRL) Pulsed Detonation Research Facility at Wright Patterson AFB, Ohio. The PDE ...AFRL-MN-EG-TP-2006-7420 A HYDROCARBON FUEL FLASH VAPORIZATION SYSTEM FOR A PULSED DETONATION ENGINE (PREPRINT) K. Colin Tucker...85,7<&/$66,),&$7,212) E7(/(3+21(180%(5 ,QFOXGHDUHDFRGH A Hydrocarbon Fuel Flash Vaporization System for a Pulsed Detonation Engine K
An Ecological Approach to Classroom Literacy Instruction: Lessons Learned from No Impact Man

ERIC Educational Resources Information Center

Hagood, Margaret C.

2010-01-01

The film "No Impact Man" tells the story of 40-something Colin Beavan, his wife Michelle Conlin, their 2-year-old daughter Isabella, and dog Frankie and their decision to go "off the grid" in an effort to have no personal net impact on the environment for a year while living in New York City. The film highlights the family's struggles to stay true…
Delivering More Than Bombs: The Utility of Long-Range Strike Platforms

DTIC Science & Technology

2012-06-01

strategic in the consequences of their actions” in Colin S. Gray, Explorations in Strategy (New York: Praeger, 1998), 61. Strategic bombing does not...LRS-B 3 Air Force Priorities for a New Strategy with Constrained Budgets, Office of the Chief of Staff of the...17 to battle, the defensive nature of US air strategy all but disappeared. The proponents of long-range strategic bombing quickly gained support
Hybrid Threats: Reconceptualizing the Evolving Character of Modern Conflict (Strategic Forum, Number 240, April 2009)

DTIC Science & Technology

2009-04-01

believe that Iraq and Afghanistan represent far more than a passing trend in the evolution of conflict. The Counterinsurgents contend that massed...ungoverned territories, transnational threats, and followers of radical versions of Islam. The Counterinsurgents contend that the purpose of a military...Or Ruminations of a Pachyderm,” Military Review ( January- February 2006), 116. 20 Colin S. Gray, After Iraq: The Search for a Sustainable National
Thucydides was Right: Defining the Future Threat

DTIC Science & Technology

2015-04-01

and the historical parallel, because the former is fun- damentally empirically unsound . History does not repeat itself in ways essential for analogy...ADVANCING STRATEGIC THOUGHT SERIES THUCYDIDES WAS RIGHT: DEFINING THE FUTURE THREAT Colin S. Gray FOR THIS AND OTHER PUBLICATIONS, VISIT US AT...Documentation Page Form ApprovedOMB No. 0704-0188 Public reporting burden for the collection of information is estimated to average 1 hour per response
Proceedings of the FAA Inspection Program Area Review, Held in Ames, Iowa on April 5-7, 1994

DTIC Science & Technology

1994-07-01

Colin Drury Mr. Locke Easton SUNY Buffalo ANE-1 00, Aircraft Certification Division, Engine and 342 Bell Mall Propeller Directorate Buffalo, NY 14260...and Tech Transfer Walter Validation: 13:10 MOI validation F. Spencer, SNL 13:30 Cost Benefit Analysis Protocol (with MOI example) V. Brechling, NWU 13...on the need for calibration of the instrument were briefly addressed. Cost -Benefit Analysis: ATA members took unexpected interest in the presentation
The DTIC Review. Information Terrorism. Volume 5, Number 1

DTIC Science & Technology

2000-03-01

ABSTRACT: (U) This document describes a PERSONAL AUTHORS: Llinas, James; proposed program of research into theories, Bisantz, Ann; Drury , Colin ; Seong...management computer. Before he finished he transferred more than $12 million to other banks and had access to the $500 billion daily transfer account . 3 By the...modem. The General Accounting Office recently estimated that Pentagon computers experience some 250,000 hacker attacks per year and 5 that 65 percent
Human Factors in Aviation Maintenance. Phase 3. Volume 2. Progress Report

DTIC Science & Technology

1994-07-01

computer-simulated NDI eddy-current task developed by Dr. Colin G. Drury and his colleagues at the State University of New York (SUNY) at Buffalo. The task...to lower cost and increase performance ............... 28 Figure 3.2 Comparison of development and delivery costs for CBT and traditional training...Active Female Aircraft Mechanics. . 110 Figure 5.1 NDI Inspection Task Simulation ( Drury et al., 1992) ............... 147 Figure 5.2 Mean Misses and
Technician Hiring in the Air National Guard: A Timeline Study

DTIC Science & Technology

2017-06-01

Research Report revealed Tech- nician employees have “lower rates of satisfaction” when compared against Active Guard and Reserve (AGRs) and...tion Research : Phase Two – Quantitative Research Report,” 30 March 2016, 60. 6. Report of Portland Marketing Analytics, L.L.C., “Air National...Guard 2015 Member Reten- tion Research : Phase Two – Quantitative Research Report,” 30 March 2016, 64. 7. General Colin Powell, The Essence of
Combating Terrorism with Preparation of the Battlespace

DTIC Science & Technology

2003-04-01

and theater levels. 49 Ibid. For the Department of State official counterterrorist policy, see: Colin Powell, “U.S. Counterterrorism Policy...15 November 2002; James Bamford , “How to (De-)Centralize Intelligence,” New York Times, 24 November 2002, available from <http://ebird.dtic.mil...Angeles Times, 27 October 2002. Available from <http://ebird.dtic.mil/Oct2002/e20021028secret.html> Internet. Accessed 28 October 2002. Bamford
An analysis of a typology of family health nursing practice.

PubMed

Macduff, Colin

2006-01-01

In this article, Colin Macduff analyses the construction and testing of a typology of family health nursing practice. Following a summary of relevant methods and findings from two linked empirical research studies, more detailed analysis of the conceptual foundations, nature and purpose of the typology is presented. This process serves to exemplify and address some of the issues highlighted in the associated article that reviews the use of typologies within nursing.
Alignment by Maximization of Mutual Information

DTIC Science & Technology

1995-06-01

Davi Geiger, David Chapman, Jose Robles, Tao Alter, Misha Bolotski, Jonathan Connel, Karen Sarachik, Maja Mataric , Ian Horswill, Colin Angle...the same pose. These images are very different and are in fact anti-correlated: bright pixels in the left image correspond to dark pixels in the right...image; dark pixels in the left image correspond to bright pixels in the right image. No variant of correlation could match these images together
Cognitive Dominance: A Historical Perspective

DTIC Science & Technology

2015-05-23

Mead and Company, 1929), 375. 22 and a naval boat sailed inside the flooded fort to accept the surrender. This success opened the Tennessee River to...Command: Military Leadership from George Washington to Colin Powell, ed. Harry S. Laver and Jeffrey J. Matthews (Lexington: University Press of Kentucky...techniques that negatively affect organizational climate 3) subordinates view the leader as looking out for his or her own interests. See George Reed
ARC-2008-ACD08-0186-005

NASA Image and Video Library

2008-07-30

NASA Ames Robotics Academy Interns at the Lunar Science Institute (LSI) building 17 Interns: David Black, Michael Zwach, Guy Chriqui, Mark Mordarski Jr., Katy Levinson, Daniela Buchman, Scott Strutner, Patrick Crownover, Neil Bhateja, Michael Buchman, John Mueller, Michelle Grau, Ben Silver, Jacques Dolan, Alex Golec Windell Jones, Colin Wilson, Joe DeBlasio, Nick Hayes, Jordan Olive, William Shaw, Ames Education Dept., Mark Leon, Ames Robotics, Josh Weiner, jack Biesiadecki, Andrew Pilloud
Strategic Studies Quarterly. Volume 2, Number 4, Winter 2008

DTIC Science & Technology

2008-01-01

of the Fallacies . . . . . . . . . . . . . . 43 Colin S. Gray Living in Interesting Times: The Economics of a Chinese Currency Attack...Legends have a lasting currency . Fallacies need to be exposed insofar as this is possible, if only to provide some policing discipline in a defense debate...Haymond.indd 84 12/17/08 1:19:37 PM Living in Interesting Times The Economics of a Chinese Currency Attack Jeffrey E. Haymond, Colonel, USAF
Challenges of German Land Forces 2030 and Beyond

DTIC Science & Technology

2011-03-24

Defense, Army Staff, February 2009 - May 2010). 52 VUCA - volatility, uncertainty, complexity, and ambiguity. Gerras, Stephen J., ed., Strategic...2007). Gerras, Stephen J., ed., Strategic Leadership Primer, 3rd ed. (Carlisle: U.S. Army War College, 2010). Gray, Colin S., Modern Strategy (Oxford...Profession, 2nd rev. and exp. ed. (Boston: Mc Graw Hill Custom Publishing, 2005). Alan G. Stolberg, “Crafting National Interests in the 21st
U.S. Navy Capstone Strategies and Concepts (1981-1990): Strategy, Policy, Concept, and Vision Documents

DTIC Science & Technology

2011-12-01

Contra Affair (1988) USS Iowa (BB-61) turret explosion, investigation (1989) US Naval Academy sexual harassment scandal (1989)  Female midshipman...down (1981); Grenada intervention (1983), Lebanon intervention (1982-3); Med hijacker force-down (1985); US assistance to Central American anti...LTG Colin Powell USA Reaction to disastrous USMC intervention in Lebanon (1983)  Forces for Unified Commands memorandum (Feb 1987)  JCS Pub 26
Improving American Innovation,

DTIC Science & Technology

1984-03-01

Why has Jap~m succeeded: western technology and the Japanese ethos. New York: Cambridge University Press, 1982. (NC 462 MO634 Norman , Colin...productivity growth. Review of Economics and Statistics 64:627-34, N~ovember 1982. Smith, G. W. and W. N. Smallwood . Preparing for breakthroughs: the rewards of...recommendations. Edited by Charles E. Larsen and WI. Novis Smith. Washington: American Chemical Society, 1980. Kobert, Norman . Agressivn management style
Cultural Resource Investigations for the Lyons Ferry Fish Hatchery Project, Near Lyons Ferry, Washington.

DTIC Science & Technology

1983-01-01

Intermontane Plateau of Western North America. In The Explanation of Culture Change: Models in Prehistory, edited by Colin Renfrew, University of...site ( Drury 1958:257). 72 1841 Charles Wilkes, linguist and explorer, traveled from Whitman Mission to Fort Colvile by the site (Wilkes 1856 4:466...Parts of the Continent of North America during the Years 1824-󈧝-󈧞-󈧟. Oregon Historical Quarterly, 5(4):325-369, Portland. Drury , Clifford M

Human Factors in Aviation Maintenance. Phase 3. Volume 1. Progress Report

DTIC Science & Technology

1993-08-01

As a subcontractor for Galaxy Scientific, Dr. Colin Drury at the State University at New York at Buffalo is conducting a substantial research program...taxonomy. In addition, however, Dr. Drury has developed a simulated NDI task, using a SUN workstation, that incorporates the physical aspects and...to both total task time and to the decision criterion used. Drury clearly feels, with some justification, that intensive investigation of individual
Northwest Manufacturing Initiative

DTIC Science & Technology

2013-04-23

each of which specifies paper of a certain weight and width. The plant combines jobs within each weight into sets, with no regard to which customer ...are made by railcars, each of which is dedicated to one customer . Long production runs imply that maximizing railcar utilization requires holding the...Susan Einberger, Colin Geartiy, Eugene Gonzales, Brooke Standifer, Ben West Industry Sponsor: Mike Steck, Senior Director, Customer Marketing and
Institute for the Study of Human Capabilities

DTIC Science & Technology

1994-05-31

Catholic Univ. James Reason Univ. of Manchester,UK Earl Hunt Univ. of Washington Barry Kantowitz Battelle Res. Center Colin Drury SUNY at Buffalo, NY Andrew...score variance accounted for were obtained in the elderly subjects by including various measures of auditory processing. 0 I 10I I I MAldling the...frequency could be discriminated. This analysis will now be extended to account for the detailed differences in thresholds3 observed for female (Kewley-Port
Development of a Methodology to Optimally Allocate Visual Inspection Time

DTIC Science & Technology

1989-06-01

Model and then takes into account the costs of the errors. The purpose of the Alternative Model is to not make 104 costly mistakes while meeting the...James Buck, and Virgil Anderson, AIIE Transactions, Volume 11, No.4, December 1979. 26. "Inspection of Sheet Materials - Model and Data", Colin G. Drury ...worker error, the probability of inspector error, and the cost of system error. Paired comparisons of error phenomena from operational personnel are
The Human Factor in System Reliability Is Human Performance Predictable? (les Facteurs humains et la fiabilite des systemes - Les performances humaines, sont-elles previsibles?)

DTIC Science & Technology

2001-01-01

by Peter Wright, University of York, UK and Colin Drury , University of Buffalo. Session 3 was chaired by Reiner Onken, University of Bundeswehr, GE...proper inspection intervals; too few inspections may give rise to accidents whilst too many can increase costs . Drury has reviewed human factors studies on...thus search, whilst the cost of a miss or false rejection affects the decision stage. To furnish this model of aircraft inspection, Drury performed a
Managing Within Constraints: Balancing U.S. Army Forces to Address a Full Spectrum of Possible Operational Needs

DTIC Science & Technology

2010-09-01

Address a Full Spectrum of Possible Operational Needs David R. Graham, Project Leader Robert B. Magruder, Project Leader John R. Brinkerhoff James L...R. Graham, Project Leader Robert B. Magruder, Project Leader John R. Brinkerhoff James L. Adams Richard P. Diehl Colin M. Doyle Anthony C. Hermes...operations in rapid succession or even at the same time. The vertical Spectrum is characterized by Lieutenant General James M. Dubik as follows: Army units
Motivation and Job Satisfaction for Middle Level Career Army Officers

DTIC Science & Technology

1975-06-06

Improves performance and performance ultimately leads to reward in the form of need satisfaction . The individual’s perception of this assumption and the... Satisfaction for Middle Level Career Army Officers Colin 0. Halvorson, CPT, USA U.S. Army Command and General Staff College Fort Leavenworth, Kansas...FORM 3. RECIPIENT’S CAT ALOG NUMBER V TI^LE (onJ Sublltta) Motivation and Job Satisfaction for Middle Level Career Army Officers 7
American Grand Strategy in an Age of Terrorism

DTIC Science & Technology

2006-03-01

as the NMS. Colin L. Powell and Andrew S. Natsios, U.S. Department of State and U.S. Agency for International Development Strategic Plan Fiscal Years...Mar-JUN 1994), http://www.jstor.org (accessed January 31, 2006). A. Cooper Drury ,”Sanctions as Coercive Diplomacy: The U.S. President’s Decision...to Initiate Economic Sanctions,” Political Research Quarterly 54, no. 3 (Sep 2001), http://www.jstor.org (accessed January 31, 2006). 122 Drury
U.S.-China Competition for Energy Resources

DTIC Science & Technology

2009-12-01

countries together in an 6 Colin Campbell, “The Coming Global Oil Crises,” Global Policy Forum, http://www.oilcrisis.com/Campbell. 7 John ...Indian War (the Europeans call it the Seven Years War), for instance, was 11 Bruce Russett and John O’Neal, Triangulating Peace: Democracy...Uniwin, 1926. Fitz -Gerald, Keith. “China’s Growing Oil Hunger Could Shake up Oil Prices.” (accessed November 15, 2009). Flannagan, Stephen J
Defining an Approach for Future Close Air Support Capability

DTIC Science & Technology

2017-01-01

may take on the form of a force-mix study that considers multiple joint scenarios and missions. viii Acknowledgments The authors would like to thank...the Army and other services on an approach for defining future CAS capability. 9 Colin Clark, “Air...unit; one British soldier was killed, and five others were wounded.15 Only one A-10 was shot down during all of OIF and OEF. However, it should be
Port and Waterway Safety Assessment: Haro Strait/Boundary Pass USA - Canada Workshop Report

DTIC Science & Technology

2002-02-26

VTS Puget Sound (206) 217-6152 kalger@pacnorwest.uscg.mil LCDR Keith Bradford USCG MSO Puget Sound (206) 217-6251 kbradford@pacnorwest.uscg.mil Mr...594-3335 dyck@telus.net Mr. Colin Eckford Washington Marine Group (604) 988-3111 ceckford@seaspan.com Capt. Miklos Endrody Puget Sound Pilots (425...nwlink.com Mr. Andrea Heba Vancouver Port Authority (604) 665-9086 andrea.heba@portvancouver.com Capt. Robert Kromann Puget Sound Pilots (425) 743
America Promises to Come Back: A New National Strategy

DTIC Science & Technology

1991-08-05

unveiled in Aspen, Colorado on August 2, 1990, involving a mix of active, reserve, and reconstitutable forces, and General Colin Powell’s "base" force...are vital for the reintroduction of formidable American military power overseas. There is a risk that the end of the Cold War may bring an increased...Winter 1991/1992. (2) "Remarks by the President to the Aspen Institute Symposium" (as delivered), Office of the Press Secretary (Aspen, Colorado ), The
Prostate Cancer Aggressiveness Gene in Hereditary Prostate Cancer

DTIC Science & Technology

2007-03-01

with REA, and estrogen receptor corepressor. Breast Canc Res Treat., in press (2007). This grant provided research support for Dr Veda Giri while...an estrogen receptor corepressor Clara Hwang Æ Veda N. Giri Æ John C. Wilkinson Æ Casey W. Wright Æ Amanda S. Wilkinson Æ Kathleen A. Cooney Æ Colin S...histone deacetylases (HDAC), and members of the polycomb group (PcG) of proteins. Clara Hwang and Veda N. Giri contributed equally to this work. C
International Law and Military Operations

DTIC Science & Technology

2008-01-01

Operations Concept, which addresses the operational principles that will be used by the services; 12 and the US Coast Guard Strategy for Maritime Safety ...Maslow’s hierarchy of human needs, the need fo r security is exceeded only by basic needs, e.g., food . 60 Professor Colin Gray asserts that "order is the...certainly for the Coast Guard and other interagency players with maritime safety and security missions. The new strategy must also acknowledge that
Joint Force Quarterly. Issue 73, 2nd Quarter 2014

DTIC Science & Technology

2014-04-01

hyperloop ,” a partial vacuum tube that carries passengers in General William M. Fraser III, USAF, is Commander of U.S. Transportation Command. Colonel...http://en.wikipedia.org/wiki/Shanghai_ Maglev_Train>; “Falcon 9,” available at <www. spacex.com/falcon9>. 3 See “ Hyperloop ,” available at <http...spacex.com/ hyperloop >. 4 Colin S. Gray, Modern Strategy (Oxford: Oxford University Press, 1999), 40. 5 Gray, Fighting Talk, 78, 80. Mankind does not live
Hierarchical Reinforcement in Continuous State and Multi-Agent Environments

DTIC Science & Technology

2005-09-01

Mahadevan, Chair Andrew G. Barto, Member Victor R . Lesser, Member Weibo Gong, Member W. Bruce Croft, Department Chair Computer Science To my parents...of my cubicle during my unwanted one-year absence. Thank you Colin Barringer , Jad Davis, Andy Fagg, Jeffrey Johns, Anders Jonsson, George Konidaris...transforma- tions of the problem. One definition is that an MDP model M consists of five elements 〈S,A,P , R , I〉 defined as follows:1 • S: is the set of
Proceedings of the International Workshop on Computational Electronics Held at Leeds University (United Kingdom) on August 11-13 1993

DTIC Science & Technology

1993-08-01

Drury , Sponsored by UK SERC and MIA-COM (USA). Apart from any fair dealing for the purposes of research or private study, or criticism or review, as...field effect 128 transistors R Drury , R E Miles and C M Snowden, University of Leeds Poster Session II Determination of diffusion coefficients and...V V V y V V V Device simulation by means of a direct solution of the coupled Poisson/Boltzmann Transport enuations Conor J. Donnelly and Colin Lyden
The Feasibility of a Department of Defense Chaplaincy

DTIC Science & Technology

1993-03-10

militia chaplains were available to swell the ranks of the Navy chaplaincy as was the common practice in Army mobilizations. Drury accurately identified...chaplaincies. General Colin Powell, in a Pentagon briefing on the Joint Chiefs of Staff report on "Roles and Missions of the Services," (Cable News...clergyman, but in that dread last moment they want someone to speak to them of God. (Nance, 152-53). 57Gushwa, 192. 74 58Quoted in Clifford M. Drury , The
Meet the Editors: JGR-Atmospheres

NASA Astrophysics Data System (ADS)

Kumar, Mohi

2006-04-01

Three scientists were newly appointed and one scientist was reappointed last year as editors of JGR-Atmospheres. The three new editors, John Austin, Jose D. Fuentes, and Ruth Lieberman, along with returning editor Colin O'Dowd, would like to see several changes made to the journal. ``JGR-Atmospheres is still regarded as the highest-quality atmospheric science journal, having perhaps one of the most stringent and rigorous review processes,'' said O'Dowd. ``However, there is still room for improvement.''
Operation Strong Wind (Fort Lee’s Response to a Local Tornado Disaster, 6 August 1993)

DTIC Science & Technology

1993-11-01

the cooks. SFC Datts told the people who brought food, where to set up. There were people from Burger King, Hardees, Pizza Hut , McDon- alds, Sonic...of Peters- burg, Hopewell, and Colonial Heights, General Colin Powell said in a news conference: ... we have a value system and a culture system...request went to DPTMS and eventually the Congressmen landed at Fort Lee’s helipad and traveled to the site by car. Between midnight and 0800 the chain of

AMI Go Home - Assessing the Realignment of U.S. Army Forces in Europe

DTIC Science & Technology

2005-03-18

a major U.S. investment.37 According to Stuart Drury of the Joint Chiefs of Staff, deploying would be much more difficult from Eastern Europe...35 Ibid, xvi. 36 Ibid,12. 37 Ibid, 29. 38 Stuart P. Drury , “The Argument Against Relocating U.S. Forces in Europe,” National Defense University...Europe in the 21st Century,” Parameters (Autumn 2004): 61. 53 Colin Powell, “A Strategy of Partnership,” Foreign Affairs (Jan/Feb 2004): 22. 54 Michael
Computer Aided Layout of Procedure Information for Training and Job Aiding.

DTIC Science & Technology

1983-12-01

aspect of the project by Professor Colin G. Drury of the State University of New York at Buffalo. We are also grateful to those listed below whose...is well presented and reviewed by Drury (1981). The purpose of Task Analysis in 𔃻 -4C . . . ..’.77 . 7_1 ’ . . . . . . 12 the JPAs and PTAs...Manual, TAEG TR 107, August 1981, TAEG, Orlando, Florida. Drury , C. G., "Task Analysis" To appear in Journal of Applied Ergonomics. Dyer, J. S
Online Learning Techniques for Improving Robot Navigation in Unfamiliar Domains

DTIC Science & Technology

2010-12-01

In In Proceedings of the 1996 Symposium on Human Interaction and Complex Systems, pages 276–283, 1996. 6.1 [15] Colin Campbell and Kristin P. Bennett...ISBN 0-262-19450-3. 5.1 [104] Jean Scholtz, Jeff Young, Jill L. Drury , and Holly A. Yanco. Evaluation of human-robot interaction awareness in search...2004. 6.1 [147] Holly A. Yanco and Jill L. Drury . Rescuing interfaces: A multi-year study of human-robot interaction at the AAAI robot rescue
West German Rearmament: From Enemy to Ally in Ten Short Years

DTIC Science & Technology

1988-01-01

United States Air Force, Camarillo, California. 1 December 1987. 14Alfred Grosser, AffauwEzsftr~eresn La Po&&kmue de France IW41- -84(Unk: Flammarion ...Affaires extdrieures la osig’itiue de Al France 19.1 - 19S4 ( Unk: Flammarion , 1984), p. 95. 16 McGeehan, German Rearmament Question pp. 64 - 65...34 La ooliti’ue de Is France 1944 - 19y Unk Flammarion , 1984. Grosser, Alfred. &&RA&u 0u1 W adiamParis: Libraiz-• Armand Colin, 1967. Grosser, Alfred
The Gum Nebula and Related Problems

NASA Technical Reports Server (NTRS)

1973-01-01

Proceedings of a symposium concerning the Gum Nebula (GN) and related topics are reported. Papers presented include: Colin Gum and the discovery of the GN; identification of the GN as the fossil Stromgren sphere of Vela X Supernova; size and shape of GN; formation of giant H-2 regions following supernova explosions; radio astronomy Explorer 1 observations of GN; cosmic ray effects in the GN; low intensity H beta emission from the interstellar medium; and how to recognize and analyze GN. Astronomical charts and diagrams are included.
What is that mysterious booming sound?

USGS Publications Warehouse

Hill, David P.

2011-01-01

The residents of coastal North Carolina are occasionally treated to sequences of booming sounds of unknown origin. The sounds are often energetic enough to rattle windows and doors. A recent sequence occurred in early January 2011 during clear weather with no evidence of local thunder storms. Queries by a local reporter (Colin Hackman of the NBC affiliate WETC in Wilmington, North Carolina, personal communication 2011) seemed to eliminate common anthropogenic sources such as sonic booms or quarry blasts. So the commonly asked question, “What's making these booming sounds?” remained (and remains) unanswered.
Molecular Environment and an X-Ray Spectroscopy of Supernova Remnant Kesteven 78

NASA Astrophysics Data System (ADS)

Zhou, Ping; Chen, Yang

2011-12-01

We investigate the molecular environment of the Galactic supernova remnant (SNR) Kesteven 78 and perform an XMM-Newton X-ray spectroscopic study for the northeastern edge of the remnant. SNR Kes 78 is found to interact with the molecular clouds (MCs) at a systemic local standard of rest velocity of 81 km s-1. At around this velocity, the SNR appears to contact a long molecular strip in the northeast and a large cloud in the east as revealed in the 13CO line, which may be responsible for the radio brightness peak and the OH maser, respectively. The 12CO-line bright region morphologically matches the eastern bright radio shell in general, and the SNR is consistent in extent with a CO cavity. Broadened 12CO-line profiles discerned in the eastern maser region and the western clumpy molecular arc and the elevated 12CO (J = 2-1)/(J = 1-0) ratios along the SNR boundary may be signatures of shock perturbation in the molecular gas. The SNR-MC association places the SNR at a kinematic distance of 4.8 kpc. The X-rays arising from the northeastern radio shell are emitted by underionized hot (~1.5 keV), low-density (~0.1 cm-3) plasma with solar abundance, and the plasma may be of intercloud origin. The age of the remnant is inferred to be about 6 kyr. The size of the molecular cavity in Kes 78 implies an initial mass around 22 M ⊙ for the progenitor.
Introducing Systems Approaches

NASA Astrophysics Data System (ADS)

Reynolds, Martin; Holwell, Sue

Systems Approaches to Managing Change brings together five systems approaches to managing complex issues, each having a proven track record of over 25 years. The five approaches are: System Dynamics (SD) developed originally in the late 1950s by Jay Forrester Viable Systems Model (VSM) developed originally in the late 1960s by Stafford Beer Strategic Options Development and Analysis (SODA: with cognitive mapping) developed originally in the 1970s by Colin Eden Soft Systems Methodology (SSM) developed originally in the 1970s by Peter Checkland Critical Systems Heuristics (CSH) developed originally in the late 1970s by Werner Ulrich
Shocked molecular hydrogen in the bipolar outflow NGC 2071

NASA Technical Reports Server (NTRS)

Burton, Michael G.; Geballe, T. R.; Brand, P. W. J. L.

1989-01-01

Maps of the emission from the v = 1-0 S(1) line of molecular hydrogen in the bipolar outflow of NGC 2071 are presented. The line emission is shown to peak at six positions distributed irregularly along two lobes which are parallel to, but offset about 20 arcsec from, the lobes of the high-velocity CO-line emission. The energetics and composition of the high-velocity gas support a model in which the driving agent is a bipolar atomic wind which arises from the vicinity of the central IR sources and shocks the surrounding molecular cloud, evacuating a cavity within it.
Mars Briefing

NASA Image and Video Library

2011-08-04

Colin Dundas, a research geologist with the U.S. Geological Survey, speaks during a briefing, Thursday, Aug. 4, 2011, at NASA Headquarters in Washington. Observations from NASA's Mars Reconnaissance Orbiter (MRO) have revealed possible flowing water during the warmest months on Mars. Dark, finger-like features appear and extend down some Martian slopes during late spring through summer, fade in winter, and return during the next spring. Repeated observations have tracked the seasonal changes in these recurring features on several steep slopes in the middle latitudes of Mars' southern hemisphere. Photo Credit: (NASA/Paul E. Alers)
Quasi-Classical Asymptotics for the Pauli Operator

NASA Astrophysics Data System (ADS)

Sobolev, Alexander V.

We study the behaviour of the sums of the eigenvalues of the Pauli operator in , in a magnetic field and electric field V(x) as the Planck constant ħ tends to zero and the magnetic field strength μ tends to infinity. We show that for the sum obeys the natural Weyl type formula where σ = (d- 2)/2 + γ, with an explicit constant Cγ, d. If the field B has a constant direction, then this formula is uniform in μ>= 0. The method is based on Colin de Verdiere's approach proposed in his work on ``magnetic bottles'' (Commun. Math Phys, 105 , 327-335 (1986)).
Relativistic and noise effects on multiplayer Prisoners' dilemma with entangling initial states

NASA Astrophysics Data System (ADS)

Goudarzi, H.; Rashidi, S. S.

2017-11-01

Three-players Prisoners' dilemma (Alice, Bob and Colin) is studied in the presence of a single collective environment effect as a noise. The environmental effect is coupled with final states by a particular form of Kraus operators K_0 and K_1 through amplitude damping channel. We introduce the decoherence parameter 0≤p≤1 to the corresponding noise matrices, in order to controling the rate of environment influence on payoff of each players. Also, we consider the Unruh effect on the payoff of player, who is located at a noninertial frame. We suppose that two players (Bob and Colin) are in Rindler region I from Minkowski space-time, and move with same uniform acceleration (r_b=r_c) and frequency mode. The game is begun with the classical strategies cooperation ( C) and defection ( D) accessible to each player. Furthermore, the players are allowed to access the quantum strategic space ( Q and M). The quantum entanglement is coupled with initial classical states by the parameter γ \\in [0,π /2]. Using entangled initial states by exerting an unitary operator \\hat{J} as entangling gate, the quantum game (competition between Prisoners, as a three-qubit system) is started by choosing the strategies from classical or quantum strategic space. Arbitrarily chosen strategy by each player can lead to achieving profiles, which can be considered as Nash equilibrium or Pareto optimal. It is shown that in the presence of noise effect, choosing quantum strategy Q results in a winning payoff against the classical strategy D and, for example, the strategy profile ( Q, D, C) is Pareto optimal. We find that the unfair miracle move of Eisert from quantum strategic space is an effective strategy for accelerated players in decoherence mode (p=1) of the game.
A Study of Fermi-LAT GeV γ-Ray Emission toward the Magnetar-harboring Supernova Remnant Kesteven 73 and Its Molecular Environment

NASA Astrophysics Data System (ADS)

Liu, Bing; Chen, Yang; Zhang, Xiao; Liu, Qian-Cheng; He, Ting-Lan; Zhou, Xin; Zhou, Ping; Su, Yang

2017-12-01

We report our independent GeV γ-ray study of the young shell-type supernova remnant (SNR) Kes 73, which harbors a central magnetar, and CO-line millimeter observations toward the SNR. Using 7.6 years of Fermi-LAT observation data, we detected an extended γ-ray source (“source A”) with centroid on the west of the SNR, with a significance of 21σ in 0.1-300 GeV and an error circle of 5.‧4 in angular radius. The γ-ray spectrum cannot be reproduced by a pure leptonic emission or a pure emission from the magnetar, and thus a hadronic emission component is needed. The CO-line observations reveal a molecular cloud (MC) at V LSR ˜ 90 km s-1, which demonstrates morphological correspondence with the western boundary of the SNR brightened in multiwavelength. The 12CO (J = 2 - 1)/12CO (J = 1 - 0) ratio in the left (blue) wing 85-88 km s-1 is prominently elevated to ˜1.1 along the northwestern boundary, providing kinematic evidence of the SNR-MC interaction. This SNR-MC association yields a kinematic distance 9 kpc to Kes 73. The MC is shown to be capable of accounting for the hadronic γ-ray emission component. The γ-ray spectrum can be interpreted with a pure hadronic emission or a magnetar+hadronic hybrid emission. In the case of pure hadronic emission, the spectral index of the protons is 2.4, very similar to that of the radio-emitting electrons, essentially consistent with the diffusive shock acceleration theory. In the case of magnetar+hadronic hybrid emission, a magnetic field decay rate ≳1036 erg s-1 is needed to power the magnetar’s curvature radiation.
Family Bovidae (Hollow-horned Ruminants)

USGS Publications Warehouse

Groves, Colin P.; Leslie, David M.; Huffman, Brent A.; Valdez, Raul; Habibi, Khushal; Weinberg, Paul; Burton, James; Jarman, Peter; Robichaud, William

2015-01-01

Probably the single most eye-catching aspect of the current volume is the explosion of species recognized in the family Bovidae (Hollow-horned Ruminants). In 2005, the third edition of Mammal Species of the World listed 143 species in 50 genera of Bovidae. That list, prepared by the late Peter Grubb, was somewhat traditional and provisional, as he was engaged with his long-time colleague, Colin Groves, in a substantial revision of ungulate taxonomy. Their work, which will be published later this year, is the culmination of years of study of this important and wide-ranging family by these two venerable authorities. Colin Groves is the lead author for Bovidae in this volume of HMW, and in it we recognize all 279 species in 54 genera that are documented in his and Peter Grubb’s ground-breaking work.At the root of this expanded number of recognized species is our changing view of the modern species concept. Like a growing number of taxonomists, Groves favors a phylogenetic species concept, which he defines as the smallest population or aggregation of populations that has fixed heritable differences from other such populations or aggregations. This is in contrast to the traditional biological species concept, which requires reproductive isolation between such populations. The difficulty in determining that reproductive isolation led to an underrepresentation of the number of species in many groups. Clearly there remain problems in determining which differences between populations are heritable, and the system used here undoubtedly will continue to be tweaked as our understanding grows. For now, this greatly expanded version of Bovidae species limits seems the best answer. One of the goals of HMW is to provide an up-to-date summary of the conservation status for every species of mammal, and this expanded species concept better enables us to explore the true conservation situation of each.
A resolution honoring the life, service, and sacrifice of Captain Colin P. Kelly Jr., United States Army.

THOMAS, 112th Congress

Sen. Nelson, Bill [D-FL

2011-10-20

Senate - 11/16/2011 Resolution agreed to in Senate without amendment and an amended preamble by Unanimous Consent. (All Actions) Tracker: This bill has the status Agreed to in SenateHere are the steps for Status of Legislation:
ARPA-E: Inspiring Energy Innovators

ScienceCinema

Babinec, Sue; Wessells, Colin; Zakhor, Avideh

2018-06-22

ARPA-E is supporting some of the best and brightest scientific minds across the country to turn aspirational ideas into tangible technology options. By presenting an ambitious energy challenge to the U.S. research and development community, ARPA-E attracts ideas from a diverse group of innovators, representing traditional and non-traditional energy backgrounds, who look to address energy challenges in new and exciting ways. Founder and CEO of Alveo Energy Dr. Colin Wessels and Co-Founder and CEO of Indoor Reality Dr. Avideh Zakhor are two ARPA-E project investigators that have made great progress, with support from the ARPA-E Tech-to-Market team, in advancing their technologies out of the lab and into the marketplace.
The Processing and Mechanical Properties of High Temperature/ High Performance Composites. Processing/Property Correlations. Book 4

DTIC Science & Technology

1994-03-01

Metals Park , Ohio(1088). 42. E.W. Colin s, The Physical Metallurgy of Ti Alloys, pp.111-21-. ASM, Metals Park , Ohio (198 43. C.R. Brooos, Heat...Treatment. Structure and Properties of Nonferrous Alloys, pp.361-376. ASM, Metals Park , Ohio (1982). 44. W.C. Ha-rigan, Jr., Met. Trans. A 5, 565 (1974). 45...CJ 0 c0 CMJ 0 1~~ 00 0; 0D/D ’sseils; eJI~suG LO) C~i 0 Cl E -i E 0z Ln C; 0 DO/D ’SsOJIS teU! WON LO E C 0. 22.0 x In 0o 0)- 00D LO qw)r 0; ; 0 0i 6 0
Testing local anisotropy using the method of smoothed residuals I — methodology

DOE Office of Scientific and Technical Information (OSTI.GOV)

Appleby, Stephen; Shafieloo, Arman, E-mail: stephen.appleby@apctp.org, E-mail: arman@apctp.org

2014-03-01

We discuss some details regarding the method of smoothed residuals, which has recently been used to search for anisotropic signals in low-redshift distance measurements (Supernovae). In this short note we focus on some details regarding the implementation of the method, particularly the issue of effectively detecting signals in data that are inhomogeneously distributed on the sky. Using simulated data, we argue that the original method proposed in Colin et al. [1] will not detect spurious signals due to incomplete sky coverage, and that introducing additional Gaussian weighting to the statistic as in [2] can hinder its ability to detect amore » signal. Issues related to the width of the Gaussian smoothing are also discussed.« less
ARPA-E: Inspiring Energy Innovators

DOE Office of Scientific and Technical Information (OSTI.GOV)

Babinec, Sue; Wessells, Colin; Zakhor, Avideh

2016-03-01

ARPA-E is supporting some of the best and brightest scientific minds across the country to turn aspirational ideas into tangible technology options. By presenting an ambitious energy challenge to the U.S. research and development community, ARPA-E attracts ideas from a diverse group of innovators, representing traditional and non-traditional energy backgrounds, who look to address energy challenges in new and exciting ways. Founder and CEO of Alveo Energy Dr. Colin Wessels and Co-Founder and CEO of Indoor Reality Dr. Avideh Zakhor are two ARPA-E project investigators that have made great progress, with support from the ARPA-E Tech-to-Market team, in advancing theirmore » technologies out of the lab and into the marketplace.« less
Cross-spectral coherence between geomagnetic disturbance and human cardiovascular variables at non-societal frequencies.

PubMed

Watanabe, Y; Hillman, D C; Otsuka, K; Bingham, C; Breus, T K; Cornélissen, G; Halberg, F

1994-01-01

A 35-year-old cardiologist monitored himself with an automatic ABPM-630 (Colin Electronics) monitor, mostly at 15-minute intervals around-the-clock for three years with a few interruptions. In this subject with a family history of high blood pressure and stroke, a cross-spectral analysis revealed a statistically significant coherence at 27.7 days between systolic and diastolic blood pressure and heart rate vs. the geomagnetic disturbance index, Kp. A lesser peak in coherence was found for systolic blood pressure with Kp at a trial period of 4.16 days (P = 0.046). These results suggest that changes in geomagnetism may influence the human circulation, at least in the presence of familial cardiovascular disease risk, and they may do so at frequencies that have no precise human-made cyclic worldwide match.

WOCE Working Group on Numerical Modeling

NASA Astrophysics Data System (ADS)

Nowlin, Worth

A U.S. WOCE (World Ocean Circulation Experiment) Working Group on Numerical Modeling has been established to serve as a forum for the discussion of progress in numerical general circulation modeling and its relationship to WOCE design and data analysis and as an advisory body on resource and manpower requirements for large-scale ocean modeling. The first meeting of this working group was held at the National Center for Atmospheric Research in Boulder, Colo., on Monday, December 10, 1984. The working group members who attended were K. Bryan, Y.-J. Han, D. Haidvogel (chairman), W. Holland, H. Hurlburt, J. O'Brien, A. Robinson, B. Semtner, and J. Sarmiento. Observers included F. Bretherton, A. Colin de Verdiere, C. Collins, L. Hua, P. Rizzoli, T. Spence, R. Wall, and S. Wilson.
Modes, tempo and spatial variability of Cenozoic cratonic denudation: morphoclimatic constraints from West Africa

NASA Astrophysics Data System (ADS)

Beauvais, Anicet; Chardon, Dominique

2010-05-01

variability in the estimates of local relief and denudation rates for several time spans defined between selected paleosurfaces in the sequence. Denudation rates, ranging from ~ 4 m to ~ 25 m Ma-1, reflect overall acceleration of erosion rates in the Neogene. The observed space-time variability of the denudation rates suggest the interplay of (1) duration and intensity of climatically driven physical erosion periods, (2) absolute elevation and position of the considered sites with respect to the main continental divides, and (3) potential reorganization of the large-scale drainage. The results provide a new perspective for the detection, dating and quantification of subtle epeirogenic movements in West Africa, once combined with the sedimentary record of Cenozoic intracratonic and coastal basins. [1] Beauvais, A., Ruffet, G., Hénocque, O., Colin, F., 2008. Chemical and physical erosion rhythms of the West African Cenozoic morphogenesis: The 39Ar-40Ar dating of supergene K-Mn oxides. J. Geophys. Res. Earth Surface 113, F04007, doi :10.1029/2008JF000996. [2] Brown, E.T., Bourlès, D.L., Colin, F., Sanfo, Z., Raisbeck, G.M., Yiou, F., 1994. The development of iron crust lateritic systems in Burkina Faso, West Africa examined with in-situ-produced cosmogenic nuclides. Earth Planet. Sci. Letters 124, 19-33. [3] Colin, F., Beauvais, A., Ruffet, G., Hénocque, O., 2005. First 40Ar/39Ar geochronology of lateritic manganiferous pisolites: Implications for the palaeogene history of a West African landscape. Earth Planet. Sci. letters 238, 172-188. [4] Vasconcelos, P.M., 1999. K-Ar and 40Ar/39Ar geochronology of weathering processes. Ann. Rev. Earth Planet. Sci. 27, 183-229.
Understanding sexual, paraphilic, and gender dysphoria disorders in DSM-5.

PubMed

DeFeo, Jennifer

2015-01-01

With every Diagnostic and Statistical Manual of Mental Disorders that has been published, there has been controversy within controversy; however, what appears to be lacking is the importance of truly understanding what, why, and how the changes impact the community at large. Issues such as homosexuality, the five axial diagnostic system, and transitioning from a medical model to a biopsychosocial model have been hot topics that have led clinicians to challenge the reliability and validity of the manual throughout history. As clinicians and medical professionals, it is important to objectively look at the manual and become educated on how and why these changes exist. With that being said, this commentary aims to challenge the article " Problems with the Sexual Disorders Sections of DSM-5" by Colin A. Ross (2015). The structure of this commentary purposefully mirrors the structure of the commentary that it is challenging.
[Validation of the Omron HEM-650 wrist blood pressure device using the British Hypertension Society protocol in emergency patients in Hong Kong].

PubMed

Hung, Kevin KC; Lai, W Y; Cocks, Robert A; Rainer, Timothy H; Graham, Colin A

2015-10-01

Automated wrist cuff blood pressure (BP) devices are more compact and easier to use, particularly when access to the upper arm is restricted, for example in emergencies. We tested the Omron HEM-650 wrist device using the validation criteria of the British Hypertension Society (BHS) protocol in a major emergency department (ED) in Hong Kong. 85 patients had three measurements each by both the Omron HEM-650 wrist device and the mercury sphygmomanometer. The conventional automated BP with arm cuff was also measured using an oscillometric (Colin BP-88S NXT) device for comparison. The Omron HEM-650 achieved a grade B for both systolic and diastolic BP and demonstrated acceptable accuracy and reliability in Chinese patients in the emergency setting. The Omron HEM 650 wrist device can be recommended for use in adult emergency patients. Further research is warranted for its use in pregnant women and critically ill patients.
Animal minds and neuroimaging--bridging the gap between science and ethics?

PubMed

Buller, Tom

2014-04-01

As Colin Allen has argued, discussions between science and ethics about the mentality and moral status of nonhuman animals often stall on account of the fact that the properties that ethics presents as evidence of animal mentality and moral status, namely consciousness and sentience, are not observable "scientifically respectable" properties. In order to further discussion between science and ethics, it seems, therefore, that we need to identify properties that would satisfy both domains. In this article I examine the mentality and moral status of nonhuman animals from the perspective of neuroethics. By adopting this perspective, we can see how advances in neuroimaging regarding (1) research into the neurobiology of pain, (2) "brain reading," and (3) the minimally conscious state may enable us to identify properties that help bridge the gap between science and ethics, and hence help further the debate about the mentality and moral status of nonhuman animals.
Technological possibility and public policy

NASA Astrophysics Data System (ADS)

Lee, Steven; Brophy, Scott

1986-08-01

Space colonies are easily imagined in a variety of social forms that can be used to highlight questions of social philosophy. Because of their exceptional dependence on technology they are particularly suitable for investigating philosophical questions pertaining to the development and use of technology and reliance on it. Space colonies also serve as models in terms of which to explore broader questions of social justice and the ethical dimensions of public policy issues. For example, we ask ``Is it morally justified for a government to embark on a policy of rapidly colinizing space given the resources this would require?'' We conclude that the actual benefits are likely to be much less than anticipated. Regardless of the possible benefits, a public policy for devoting present resources to house many people in space is a policy of not devoting such massive resources to other more pressing problems confronting this generation of humanity. The idea should not be adopted as policy.
Comment on {open_quote}{open_quote}Comments on the use of asymmetric monochromators for x-ray diffraction on a synchrotron source{close_quote}{close_quote} [Rev. Sci. Instrum. {bold 66}, 2174 (1995)

DOE Office of Scientific and Technical Information (OSTI.GOV)

Sanchez del Rio, M.; Cerrina, F.

1996-10-01

In the article {open_quote}{open_quote}Comments on the use of asymmetric monochromators for x-ray diffraction on a synchrotron source,{close_quote}{close_quote} by Colin Nave, Ana Gonzalez, Graham Clark, Sean McSweeney, Stewart Cummings, and Michael Hart, Rev. Sci. Instrum. {bold 66}, 2174 (1995), paragraph II, the authors{close_quote} unfamiliarity with our modeling codes leads them to claim that our approach to treat bent-asymmetrically cut crystals in ray tracing calculations is incorrect. Since SHADOW is a widely used code, it is important to correct any misunderstandings, and we give here arguments to demonstrate that our approach is perfectly valid, and the arguments used by the authors tomore » criticize our method are based on an unwarranted conclusion extracted from one of our previous articles. We show that SHADOW, when properly run, treats the cases raised exactly. Indeed, their arguments provide a nice benchmark test for verifying the accuracy of SHADOW {copyright} {ital 1996 American Institute of Physics.}« less
The Effect of Bond Albedo on Venus' Atmospheric and Surface Temperatures

NASA Astrophysics Data System (ADS)

Bullock, M. A.; Limaye, S. S.; Grinspoon, D. H.; Way, M.

2017-12-01

In spite of Venus' high planetary albedo, sufficient solar energy reaches the surface to drive a powerful greenhouse effect. The surface temperature is three times higher than it would be without an atmosphere. However, the details of the energy balance within Venus' atmosphere are poorly understood. Half of the solar energy absorbed within the clouds, where most of the solar energy is absorbed, is due to an unknown agent. One of the challenges of modeling Venus' atmosphere has been to account for all the sources of opacity sufficient to generate a globally averaged surface temperature of 735 K, when only 2% of the incoming solar energy is deposited at the surface. The wavelength and spherically integrated albedo, or Bond albedo, has typically been cited as between 0.7 and 0.82 (Colin 1983). Yet, recent photometry of Venus at extended phase angles between 2 and 179° indicate a Bond albedo of 0.90 (Mallama et al., 2006). The authors note an increase in cloud top brightness at phase angles < 2°, which effectively increases the spherically integrated albedo. They suggest that forward scattering by the H2SO4/H2O aerosols of the upper cloud is responsible for Venus' high albedo at very low phase angles. The present work investigates the implications of such a high albedo for understanding and modeling the energy balance of Venus' atmosphere. Using the successful 1D radiative transfer model SimVenus that incorporates the opacity due to 9 major gases in Venus' atmosphere, as well as multiple scattering calculations of radiation within the clouds, the sensitivity of surface temperature was studied as a function of Bond albedo. Results of these model calculations are shown in Fig. 1. Figure 1a (left). Venus' atmospheric temperature profile for different values of Bond albedo. The structure and radiative effects of the clouds are fixed. Figure 1b (right). Venus surface temperature as Bond Albedo changes. Radiative-convective equilibrium models predict the correct globally
Bridging the Health Data Divide.

PubMed

Celi, Leo Anthony; Davidzon, Guido; Johnson, Alistair Ew; Komorowski, Matthieu; Marshall, Dominic C; Nair, Sunil S; Phillips, Colin T; Pollard, Tom J; Raffa, Jesse D; Salciccioli, Justin D; Salgueiro, Francisco Muge; Stone, David J

2016-12-20

Fundamental quality, safety, and cost problems have not been resolved by the increasing digitization of health care. This digitization has progressed alongside the presence of a persistent divide between clinicians, the domain experts, and the technical experts, such as data scientists. The disconnect between clinicians and data scientists translates into a waste of research and health care resources, slow uptake of innovations, and poorer outcomes than are desirable and achievable. The divide can be narrowed by creating a culture of collaboration between these two disciplines, exemplified by events such as datathons. However, in order to more fully and meaningfully bridge the divide, the infrastructure of medical education, publication, and funding processes must evolve to support and enhance a learning health care system. ©Leo Anthony Celi, Guido Davidzon, Alistair EW Johnson, Matthieu Komorowski, Dominic C Marshall, Sunil S Nair, Colin T Phillips, Tom J Pollard, Jesse D Raffa, Justin D Salciccioli, Francisco Muge Salgueiro, David J Stone. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 20.12.2016.
On the heat trace of Schroedinger operators

DOE Office of Scientific and Technical Information (OSTI.GOV)

Banuelos, R.; Sa Barreto, A.

1995-12-31

Trace formulae for heat kernels of Schroedinger operators have been widely studied in connection with spectral and scattering theory. They have been used to obtain information about a potential from its spectrum, or from its scattering data, and vice-versa. Using elementary Fourier transform methods we obtain a formula for the general coefficient in the asymptotic expansion of the trace of the heat kernel of the Schroedinger operator {minus}{Delta} + V, as t {down_arrow} 0, with V {element_of} S(R{sup n}), the class of functions with rapid decay at infinity. In dimension n = 1 a recurrent formula for the general coefficientmore » in the expansion is obtained in [6]. However the KdV methods used there do not seem to generalize to higher dimension. Using the formula of [6] and the symmetry of some integrals, Y. Colin de Verdiere has computed the first four coefficients for potentials in three space dimensions. Also in [1] a different method is used to compute heat coefficients for differential operators on manifolds. 14 refs.« less
History of UK contribution to astronautics: Politics and government

NASA Astrophysics Data System (ADS)

Hicks CB, Colin

2009-12-01

In all developed countries, once it emerged from the amateur era, Space (and especially rocketry) moved on the public agenda because of its potential significance for both the civil and military policies of governments (coupled with its appetite for new money). In the UK the policy treatment of Space broadly paralleled that in other countries until the post-Empire trauma, the burn-out of the White-Hot Technological revolution of Harold Wilson, and the financial crises of the 1970s exhausted the public appetite for large scale publicly funded projects in high technology. The culmination for Space of these pressures came in 1986-1987 when the UK rejected the emerging international consensus and, almost alone, stayed outside the manned space commitments which developed into the International Space Station. In this paper, Colin Hicks will review the UK political developments which led up to the 1986-1987 decision and how the politics and organisation of UK space activity have developed since then to the point where in 2008 a major government review of the UK involvement in manned space was commissioned.
Comments on the paper "Bragg's law diffraction simulations for electron backscatter diffraction analysis" by Josh Kacher, Colin Landon, Brent L. Adams & David Fullwood.

PubMed

Maurice, Claire; Fortunier, Roland; Driver, Julian; Day, Austin; Mingard, Ken; Meaden, Graham

2010-06-01

This comment on the paper "Bragg's Law diffraction simulations for electron backscatter diffraction analysis" by Kacher et al. explains the limitations in determining elastic strains using synthetic EBSD patterns. Of particular importance are those due to the accuracy of determination of the EBSD geometry projection parameters. Additional references and supporting information are provided. Copyright 2010 Elsevier B.V. All rights reserved.
TYCHO SN 1572: A NAKED Ia SUPERNOVA REMNANT WITHOUT AN ASSOCIATED AMBIENT MOLECULAR CLOUD

DOE Office of Scientific and Technical Information (OSTI.GOV)

Tian, W. W.; Leahy, D. A., E-mail: tww@bao.ac.cn

The historical supernova remnant (SNR) Tycho SN 1572 originates from the explosion of a normal Type Ia supernova that is believed to have originated from a carbon-oxygen white dwarf in a binary system. We analyze the 21 cm continuum, H I, and {sup 12}CO-line data from the Canadian Galactic Plane Survey in the direction of SN 1572 and the surrounding region. We construct H I absorption spectra to SN 1572 and three nearby compact sources. We conclude that SN 1572 has no molecular cloud interaction, which argues against previous claims that a molecular cloud is interacting with the SNR. Thismore » new result does not support a recent claim that dust, newly detected by AKARI, originates from such an SNR-cloud interaction. We suggest that the SNR has a kinematic distance of 2.5-3.0 kpc based on a nonlinear rotational curve model. Very high energy {gamma}-ray emission from the remnant has been detected by the VERITAS telescope, so our result shows that its origin should not be an SNR-cloud interaction. Both radio and X-ray observations support that SN 1572 is an isolated Type Ia SNR.« less
Orbital stability of solitary waves for Kundu equation

NASA Astrophysics Data System (ADS)

Zhang, Weiguo; Qin, Yinghao; Zhao, Yan; Guo, Boling

In this paper, we consider the Kundu equation which is not a standard Hamiltonian system. The abstract orbital stability theory proposed by Grillakis et al. (1987, 1990) cannot be applied directly to study orbital stability of solitary waves for this equation. Motivated by the idea of Guo and Wu (1995), we construct three invariants of motion and use detailed spectral analysis to obtain orbital stability of solitary waves for Kundu equation. Since Kundu equation is more complex than the derivative Schrödinger equation, we utilize some techniques to overcome some difficulties in this paper. It should be pointed out that the results obtained in this paper are more general than those obtained by Guo and Wu (1995). We present a sufficient condition under which solitary waves are orbitally stable for 2c+sυ<0, while Guo and Wu (1995) only considered the case 2c+sυ>0. We obtain the results on orbital stability of solitary waves for the derivative Schrödinger equation given by Colin and Ohta (2006) as a corollary in this paper. Furthermore, we obtain orbital stability of solitary waves for Chen-Lee-Lin equation and Gerdjikov-Ivanov equation, respectively.
Sub-grid scale combustion models for large eddy simulation of unsteady premixed flame propagation around obstacles.

PubMed

Di Sarli, Valeria; Di Benedetto, Almerinda; Russo, Gennaro

2010-08-15

In this work, an assessment of different sub-grid scale (sgs) combustion models proposed for large eddy simulation (LES) of steady turbulent premixed combustion (Colin et al., Phys. Fluids 12 (2000) 1843-1863; Flohr and Pitsch, Proc. CTR Summer Program, 2000, pp. 61-82; Kim and Menon, Combust. Sci. Technol. 160 (2000) 119-150; Charlette et al., Combust. Flame 131 (2002) 159-180; Pitsch and Duchamp de Lageneste, Proc. Combust. Inst. 29 (2002) 2001-2008) was performed to identify the model that best predicts unsteady flame propagation in gas explosions. Numerical results were compared to the experimental data by Patel et al. (Proc. Combust. Inst. 29 (2002) 1849-1854) for premixed deflagrating flame in a vented chamber in the presence of three sequential obstacles. It is found that all sgs combustion models are able to reproduce qualitatively the experiment in terms of step of flame acceleration and deceleration around each obstacle, and shape of the propagating flame. Without adjusting any constants and parameters, the sgs model by Charlette et al. also provides satisfactory quantitative predictions for flame speed and pressure peak. Conversely, the sgs combustion models other than Charlette et al. give correct predictions only after an ad hoc tuning of constants and parameters. Copyright 2010 Elsevier B.V. All rights reserved.
First High Resolution IR Study of the νb{14} (a') A-Type Band Near 421.847 \\wn of 2-^{13}C-PROPENE

NASA Astrophysics Data System (ADS)

Daunt, S. J.; Grzywacz, Robert; Billinghurst, Brant E.

2017-06-01

This is is the first high resolution IR study of any band of the 2-^{13}C-propene species. There have been only two previous high resolution studies of vibration-rotation bands of the normal species. The band examined here is the νb{14} (A') CCC skeletal bending near 421.847 \\wn which has an A-Type asymmetric rotor structure. The spectra were recorded on the FTS at the Far-IR beamline of the Canadian Light Source with a resolution of Δν = 0.0009 \\wn. We have assigned and fitted around 2200 transitions and determined ground and upper state rotational constants. Lines with J up to 49 and K up to 12 were included. The subbands with K greater than 12 were perturbed and show torsional splittings that vary from small to extremely large. The fitting was done with the PGOPHER program of Colin Western. The GS constants are in good agreement with the MW constants reported recently by Craig, Groner and co-workers. Ainetschian, Fraser, Ortigoso & Pate, J. Chem. Phys. 100, 729 ff. (1994); Lafferty, Flaud & Herman, J. Mol. Struct. 780-781, 65 ff. (2006). Western, J. Quant. Spectrosc. Rad. Transf. 186, 221 ff. (2017). Paper M109, 71st ISMS Symposium (2016); J. Mol. Spectrosc. 328, 1-6 (2016).
Methodology for constructing a colour-difference acceptability scale.

PubMed

Laborie, Baptiste; Viénot, Françoise; Langlois, Sabine

2010-09-01

Observers were invited to report their degree of satisfaction on a 6-point semantic scale with respect to the conformity of a test colour with a white reference colour, simultaneously presented on a PDP display. Eight test patches were chosen along each of the +a*, -a*, +b*, -b* axes of the CIELAB chromaticity plane, at Y = 80 ± 2 cd.m(-2) . Experimental conditions reliably represented the automotive environment (patch size, angular distance between patches) and observers could move their head and eyes freely. We have compared several methods of category scaling, the Torgerson-DMT method (Torgerson, W. S. (1958). Theory and methods of scaling. Wiley, New York, USA); two versions of the regression method i.e. Bonnet's (Bonnet, C. (1986). Manuel pratique de psychophysique. Armand Colin, Paris, France) and logistic regression; and the medians method. We describe in detail a case where all methods yield substantial but slightly different results. The solution proposed by the regression method which works with incomplete matrices and yields results directly on a colorimetric scale is probably the most useful in this industrial context. Finally we summarize the implementation of the logistic regression method over four hues and for one experimental condition. © 2010 The Authors, Ophthalmic and Physiological Optics © 2010 The College of Optometrists.
A review of Education and Social Media using functionalist and conflict theories of educational purposes

NASA Astrophysics Data System (ADS)

Cian, Heidi; Amann, Holly

2017-11-01

Education and Social Media: Toward a Digital Future (2016), edited by Christine Greenhow, Julia Sonnevend, and Colin Agur, is a compilation of essays by leading contributors to the digital and social media movement in education. The chapters within this volume provide a granular look at the current landscape of how digital media is utilized across educational levels, fields of study, and geographic areas. The book is divided into three sections discussing the emerging use of social media in education, challenges in its implementation, and potential directions as tech-based education continues to evolve. In this review, we situate the ideas presented in Education and Social Media in the functionalist and conflict theories of educational perspective to further illuminate the potential of digital learning in supporting increased access to education for marginalized student populations. We discuss how these competing views are both given voice in Education and Social Media, prompting the reader to critically reflect on advantages and dangers presented by increased use of technological platforms in educational settings. Topics discussed include online universities, peer-developed curriculum, and differential use of technology based on school socioeconomic demographics. We also suggest areas that have emerged in need of further discussion since the book's publication.
A review of Education and Social Media using conflict and functionalist theories

NASA Astrophysics Data System (ADS)

Cian, Heidi; Amann, Holly

2017-09-01

Education and Social Media: Toward a Digital Future (2016), edited by Christine Greenhow, Julia Sonnevend, and Colin Agur, is a compilation of essays by leading contributors to the digital and social media movement in education. The chapters within this volume provide a granular look at the current landscape of how digital media is utilized across educational levels, fields of study, and geographic areas. The book is divided into three sections discussing the emerging use of social media in education, challenges in its implementation, and potential directions as tech-based education continues to evolve. In this review, we situate the ideas presented in Education and Social Media in the functionalist and conflict theories of educational perspective to further illuminate the potential of digital learning in supporting increased access to education for marginalized student populations. We discuss how these competing views are both given voice in Education and Social Media, prompting the reader to critically reflect on advantages and dangers presented by increased use of technological platforms in educational settings. Topics discussed include online universities, peer-developed curriculum, and differential use of technology based on school socioeconomic demographics. We also suggest areas that have emerged in need of further discussion since the book's publication.
Gone with the heat: a fundamental constraint on the imaging of dust and molecular gas in the early Universe.

PubMed

Zhang, Zhi-Yu; Papadopoulos, Padelis P; Ivison, R J; Galametz, Maud; Smith, M W L; Xilouris, Emmanuel M

2016-06-01

Images of dust continuum and carbon monoxide (CO) line emission are powerful tools for deducing structural characteristics of galaxies, such as disc sizes, H2 gas velocity fields and enclosed H2 and dynamical masses. We report on a fundamental constraint set by the cosmic microwave background (CMB) on the observed structural and dynamical characteristics of galaxies, as deduced from dust continuum and CO-line imaging at high redshifts. As the CMB temperature rises in the distant Universe, the ensuing thermal equilibrium between the CMB and the cold dust and H2 gas progressively erases all spatial and spectral contrasts between their brightness distributions and the CMB. For high-redshift galaxies, this strongly biases the recoverable H2 gas and dust mass distributions, scale lengths, gas velocity fields and dynamical mass estimates. This limitation is unique to millimetre/submillimetre wavelengths and unlike its known effect on the global dust continuum and molecular line emission of galaxies, it cannot be addressed simply. We nevertheless identify a unique signature of CMB-affected continuum brightness distributions, namely an increasing rather than diminishing contrast between such brightness distributions and the CMB when the cold dust in distant galaxies is imaged at frequencies beyond the Raleigh-Jeans limit. For the molecular gas tracers, the same effect makes the atomic carbon lines maintain a larger contrast than the CO lines against the CMB.

First High Resolution IR Spectra of 2-^{13}C-PROPANE. the νb{9} B-Type Band Near 366.767 \\wn and the νb{26} C-Type Band Near 746.615 \\wn. Determination of Ground and Upper State Constants.

NASA Astrophysics Data System (ADS)

Daunt, S. J.; Grzywacz, Robert; Lafferty, Walter; Flaud, Jean-Marie; Billinghurst, Brant E.

2017-06-01

This is the first report in a project to record high resolution IR data of the ^{13}C and D substituted isotopologues of propane. In this talk we will give details on the first high resolution (Δν = 0.0009 \\wn) IR investigation of 2-^{13}C-propane. Spectra of the CCC skeletal bending mode near 336.767 \\wn (B-type) and the wagging mode near 746.615 \\wn (C-type) were recorded using the FTS on the Far-IR beamline of the Canadian Light Source (CLS). The spectra were assigned both traditionally and with the aid of the PGOPHER program of Colin Western. The only available MW data on this molecule are the six K =0 J lines from Lide. We therefore had to use the present data to determine a new set of ground state constants that included centrifugal distortion terms for this molecule. We compare these experimentally determined values with the recent ab initio values of Villa, Senent & Carvajal. Upper state constants for both bands have been found that provide a good simulation of the spectra. The hope is that this data will be useful in identifying isotopic propane lines in Titan and other astrophysical objects. C. Western, J. Quant. Spectrosc. & Rad. Transf. 186, 221 ff. (2017). Lide, J.Chem. Phys. 33, p.1514ff. (1960). Villa, Senent & Carvajal, PCCP 15, 10258 (2013).
Gone with the heat: a fundamental constraint on the imaging of dust and molecular gas in the early Universe

PubMed Central

Zhang, Zhi-Yu; Smith, M. W. L.; Xilouris, Emmanuel M.

2016-01-01

Images of dust continuum and carbon monoxide (CO) line emission are powerful tools for deducing structural characteristics of galaxies, such as disc sizes, H2 gas velocity fields and enclosed H2 and dynamical masses. We report on a fundamental constraint set by the cosmic microwave background (CMB) on the observed structural and dynamical characteristics of galaxies, as deduced from dust continuum and CO-line imaging at high redshifts. As the CMB temperature rises in the distant Universe, the ensuing thermal equilibrium between the CMB and the cold dust and H2 gas progressively erases all spatial and spectral contrasts between their brightness distributions and the CMB. For high-redshift galaxies, this strongly biases the recoverable H2 gas and dust mass distributions, scale lengths, gas velocity fields and dynamical mass estimates. This limitation is unique to millimetre/submillimetre wavelengths and unlike its known effect on the global dust continuum and molecular line emission of galaxies, it cannot be addressed simply. We nevertheless identify a unique signature of CMB-affected continuum brightness distributions, namely an increasing rather than diminishing contrast between such brightness distributions and the CMB when the cold dust in distant galaxies is imaged at frequencies beyond the Raleigh–Jeans limit. For the molecular gas tracers, the same effect makes the atomic carbon lines maintain a larger contrast than the CO lines against the CMB. PMID:27429763
Meeting Report - proteostasis in Ericeira.

PubMed

Adrain, Colin; Henis-Korenblit, Sivan; Domingos, Pedro M

2018-03-01

It was a sunny Ericeira, in Portugal, that received the participants of the EMBO Workshop on Proteostasis, from 17 to 21 November 2017. Most participants gave talks or presented posters concerning their most recent research results, and lively scientific discussions occurred against the backdrop of the beautiful Atlantic Ocean.Proteostasis is the portmanteau of the words protein and homeostasis, and it refers to the biological mechanisms controlling the biogenesis, folding, trafficking and degradation of proteins in cells. An imbalance in proteostasis can lead to the accumulation of misfolded proteins or excessive protein degradation, and is associated with many human diseases. A wide variety of research approaches are used to identify the mechanisms that regulate proteostasis, typically involving different model organisms (yeast, invertebrates or mammalian systems) and different methodologies (genetics, biochemistry, biophysics, structural biology, cell biology and organismal biology). Around 140 researchers in the proteostasis field met in the Hotel Vila Galé, Ericeira, Portugal for the EMBO Workshop in Proteostasis, organized by Pedro Domingos (ITQB-NOVA, Oeiras, Portugal) and Colin Adrain (IGC, Oeiras, Portugal). In this report, we attempt to review and integrate the ideas that emerged at the workshop. Owing to space restrictions, we could not cover all talks or posters and we apologize to the colleagues whose presentations could not be discussed. © 2018. Published by The Company of Biologists Ltd.
Molecular structure and differential function of choline kinases CHKα and CHKβ in musculoskeletal system and cancer.

PubMed

Chen, Xi; Qiu, Heng; Wang, Chao; Yuan, Yu; Tickner, Jennifer; Xu, Jiake; Zou, Jun

2017-02-01

Choline, a hydrophilic cation, has versatile physiological roles throughout the body, including cholinergic neurotransmission, memory consolidation and membrane biosynthesis and metabolism. Choline kinases possess enzyme activity that catalyses the conversion of choline to phosphocholine, which is further converted to cytidine diphosphate-coline (CDP-choline) in the biosynthesis of phosphatidylcholine (PC). PC is a major constituent of the phospholipid bilayer which constitutes the eukaryotic cell membrane, and regulates cell signal transduction. Choline Kinase consists of three isoforms, CHKα1, CHKα2 and CHKβ, encoded by two separate genes (CHKA(Human)/Chka(Mouse) and CHKB(Human)/Chkb(Mouse)). Both isoforms have similar structures and enzyme activity, but display some distinct molecular structural domains and differential tissue expression patterns. Whilst Choline Kinase was discovered in early 1950, its pivotal role in the development of muscular dystrophy, bone deformities, and cancer has only recently been identified. CHKα has been proposed as a cancer biomarker and its inhibition as an anti-cancer therapy. In contrast, restoration of CHKβ deficiency through CDP-choline supplements like citicoline may be beneficial for the treatment of muscular dystrophy, bone metabolic diseases, and cognitive conditions. The molecular structure and expression pattern of Choline Kinase, the differential roles of Choline Kinase isoforms and their potential as novel therapeutic targets for muscular dystrophy, bone deformities, cognitive conditions and cancer are discussed. Copyright © 2016. Published by Elsevier Ltd.
Phonon modes and thermal conductance in carbon nanotubes

NASA Astrophysics Data System (ADS)

Tomanek, David

2001-03-01

The unique electronic transport behavior of quasi-1D carbon nanotubes(Stefano Sanvito, Young-Kyun Kwon, David Tomanek, and Colin J. Lambert, Phys. Rev. Lett. 84), 1974 (2000). finds an unexpected counterpart in their unusually high thermal conductance.(Savas Berber, Young-Kyun Kwon, and David Tomanek, Phys. Rev. Lett. 84), 4613 (2000). The latter is a consequence of the structural rigidity of nanotubes, resulting in a large sound velocity, and their phonon structure. Soft phonon modes, primarily associated with tube bending and twisting, are essentially decoupled from the energy-carrying hard phonon modes which originate in the stretching and bending of interatomic bonds. The absence of an efficient coupling mechanism between these different phonon modes is responsible for their low damping and a long phonon mean free path. With a peak value λ=37,000W/m/K at 100K, the thermal conductance of an isolated (10,10) nanotube, predicted using non-equilibrium molecular dynamics simulations, is comparable to that of isotopically pure diamond. At room temperature, the predicted value λ=6,600W/m/K even exceeds that of this best thermal conductor. Unlike bulk graphite, where coupling between the flexible layers reduces the basal plane thermal conductance by one order of magnitude, we find that the inter-tube coupling in nanotube ropes does not reduce the single-tube conductance significantly.
What drives gravitational instability in nearby star-forming spirals? The impact of CO and H I velocity dispersions

NASA Astrophysics Data System (ADS)

Romeo, Alessandro B.; Mogotsi, Keoikantse Moses

2017-07-01

The velocity dispersion of cold interstellar gas, σ, is one of the quantities that most radically affect the onset of gravitational instabilities in galaxy discs, and the quantity that is most drastically approximated in stability analyses. Here we analyse the stability of a large sample of nearby star-forming spirals treating molecular gas, atomic gas and stars as three distinct components, and using radial profiles of σCO and σ _{H I} derived from HERA CO-Line Extragalactic Survey (HERACLES) and The H I Nearby Galaxy Survey (THINGS) observations. We show that the radial variations of σCO and σ _{H I} have a weak effect on the local stability level of galaxy discs, which remains remarkably flat and well above unity, but is low enough to ensure (marginal) instability against non-axisymmetric perturbations and gas dissipation. More importantly, the radial variation of σCO has a strong impact on the size of the regions over which gravitational instabilities develop, and results in a characteristic instability scale that is one order of magnitude larger than the Toomre length of molecular gas. Disc instabilities are driven, in fact, by the self-gravity of stars at kiloparsec scales. This is true across the entire optical disc of every galaxy in the sample, with a few exceptions. In the linear phase of the disc-instability process, stars and molecular gas are strongly coupled, and it is such a coupling that ultimately triggers local gravitational collapse/fragmentation in the molecular gas.
ILEWG report and discussion on Lunar Science and Exploration

NASA Astrophysics Data System (ADS)

Foing, Bernard

2015-04-01

The EGU PS2.2 session "Lunar Science and Exploration" will include oral papers and posters, and a series of discussions. Members of ILEWG International Lunar Exploration Working Group will debate: - Recent lunar results: geochemistry, geophysics in the context of open - Celebrating the lunar legacy of pioneers Gerhard Neukum, Colin Pillinger and Manfred Fuchs planetary science and exploration - Latest results from LADEE and Chang'e 3/4 - Synthesis of results from SMART-1, Kaguya, Chang-E1 and Chang-E2, Chandrayaan-1, Lunar Reconnaissance Orbiter and LCROSS impactor, Artemis and GRAIL - Goals and Status of missions under preparation: orbiters, Luna-Glob, Google Lunar X Prize, Luna Resurs, Chang'E 5, Future landers, Lunar sample return - Precursor missions, instruments and investigations for landers, rovers, sample return, and human cis-lunar activities and human lunar sorties - Preparation: databases, instruments, terrestrial field campaigns - The future international lunar exploration programme towards ILEWG roadmap of a global robotic village and permanent international lunar base - The proposals for an International Lunar Decade and International Lunar Research Parks - Strategic Knowledge Gaps, and key science Goals relevant to Human Lunar Global Exploration Lunar science and exploration are developing further with new and exciting missions being developed by China, the US, Japan, India, Russia, Korea and Europe, and with the perspective of robotic and human exploration. The session will include invited and contributed talks as well as a panel discussion and interactive posters with short oral introduction.
Effects of the ankle-brachial blood pressure index and skin perfusion pressure on mortality in hemodialysis patients.

PubMed

Otani, Yumi; Otsubo, Shigeru; Kimata, Naoki; Takano, Mari; Abe, Takayuki; Okajima, Tomoki; Miwa, Naoko; Tsuchiya, Ken; Nitta, Kosaku; Akiba, Takashi

2013-01-01

Clinically, the ankle-brachial blood pressure index (ABI) and skin perfusion pressure (SPP) are used to screen for subclinical peripheral artery disease. However, the association between the SPP and mortality in hemodialysis patients has not been previously reported. We investigated these factors and compared the ABI and SPP in patients receiving hemodialysis. A total of 102 patients receiving maintenance hemodialysis were enrolled in this study. The ABI was determined using an ABI-form (Colin, Japan). The SPP was measured using a SensiLase(TM) PAD3000 (Kaneka, Osaka, Japan). The mean follow-up period was 3.2 ± 1.4 years. A multivariate Cox analysis identified a low ABI (p=0.019) and a low SPP (p=0.047) as being independent predictors of mortality. A receiver operating characteristic (ROC) analysis of the ABI revealed a cutoff point of 1.1 and an area under the curve (AUC) of 0.79, with a sensitivity of 90% and a specificity of 62%. A ROC analysis of the SPP revealed a cutoff point of 54.0 mmHg and an AUC of 0.71, with a sensitivity of 55% and a specificity of 84%. Both low ABI and SPP values were found to be independent risk factors for mortality among hemodialysis patients. The cutoff point for ABI as a predictor of mortality was 1.1, while that for SPP was 54.0 mmHg.
Pattern cladistics and the 'realism-antirealism debate' in the philosophy of biology.

PubMed

Vergara-Silva, Francisco

2009-06-01

Despite the amount of work that has been produced on the subject over the years, the 'transformation of cladistics' is still a misunderstood episode in the history of comparative biology. Here, I analyze two outstanding, highly contrasting historiographic accounts on the matter, under the perspective of an influential dichotomy in the philosophy of science: the opposition between Scientific Realism and Empiricism. Placing special emphasis on the notion of 'causal grounding' of morphological characters (sensu Olivier Rieppel) in modern developmental biology's (mechanistic) theories, I arrive at the conclusion that a 'new transformation of cladistics' is philosophically plausible. This 'reformed' understanding of 'pattern cladistics' entails retaining the interpretation of cladograms as 'schemes of synapomorphies', but in association to construing cladogram nodes as 'developmental-genetic taxic homologies', instead of 'standard Darwinian ancestors'. The reinterpretation of pattern cladistics presented here additionally proposes to take Bas Van Fraassen's 'constructive empiricism' as a philosophical stance that could properly support such analysis of developmental-genetic data for systematic purposes. The latter suggestion is justified through a reappraisal of previous ideas developed by prominent pattern cladists (mainly, Colin Patterson), which concerned a scientifically efficient 'observable/non-observable distinction' linked to the conceptual pair 'ontogeny and phylogeny'. Finally, I argue that a robust articulation of Antirealist alternatives in systematics may provide a rational basis for its disciplinary separation from evolutionary biology, as well as for a critical reconsideration of the proper role of certain Scientific Realist positions, currently popular in comparative biology.
Terrestrial nitrogen cycling in Earth system models revisited

USGS Publications Warehouse

Stocker, Benjamin D; Prentice, I. Colin; Cornell, Sarah; Davies-Barnard, T; Finzi, Adrien; Franklin, Oskar; Janssens, Ivan; Larmola, Tuula; Manzoni, Stefano; Näsholm, Torgny; Raven, John; Rebel, Karin; Reed, Sasha C.; Vicca, Sara; Wiltshire, Andy; Zaehle, Sönke

2016-01-01

Understanding the degree to which nitrogen (N) availability limits land carbon (C) uptake under global environmental change represents an unresolved challenge. First-generation ‘C-only’vegetation models, lacking explicit representations of N cycling,projected a substantial and increasing land C sink under rising atmospheric CO2 concentrations. This prediction was questioned for not taking into account the potentially limiting effect of N availability, which is necessary for plant growth (Hungate et al.,2003). More recent global models include coupled C and N cycles in land ecosystems (C–N models) and are widely assumed to be more realistic. However, inclusion of more processes has not consistently improved their performance in capturing observed responses of the global C cycle (e.g. Wenzel et al., 2014). With the advent of a new generation of global models, including coupled C, N, and phosphorus (P) cycling, model complexity is sure to increase; but model reliability may not, unless greater attention is paid to the correspondence of model process representations ande mpirical evidence. It was in this context that the ‘Nitrogen Cycle Workshop’ at Dartington Hall, Devon, UK was held on 1–5 February 2016. Organized by I. Colin Prentice and Benjamin D. Stocker (Imperial College London, UK), the workshop was funded by the European Research Council,project ‘Earth system Model Bias Reduction and assessing Abrupt Climate change’ (EMBRACE). We gathered empirical ecologists and ecosystem modellers to identify key uncertainties in terrestrial C–N cycling, and to discuss processes that are missing or poorly represented in current models.
Regularization of Instantaneous Frequency Attribute Computations

NASA Astrophysics Data System (ADS)

Yedlin, M. J.; Margrave, G. F.; Van Vorst, D. G.; Ben Horin, Y.

2014-12-01

We compare two different methods of computation of a temporally local frequency:1) A stabilized instantaneous frequency using the theory of the analytic signal.2) A temporally variant centroid (or dominant) frequency estimated from a time-frequency decomposition.The first method derives from Taner et al (1979) as modified by Fomel (2007) and utilizes the derivative of the instantaneous phase of the analytic signal. The second method computes the power centroid (Cohen, 1995) of the time-frequency spectrum, obtained using either the Gabor or Stockwell Transform. Common to both methods is the necessity of division by a diagonal matrix, which requires appropriate regularization.We modify Fomel's (2007) method by explicitly penalizing the roughness of the estimate. Following Farquharson and Oldenburg (2004), we employ both the L curve and GCV methods to obtain the smoothest model that fits the data in the L2 norm.Using synthetic data, quarry blast, earthquakes and the DPRK tests, our results suggest that the optimal method depends on the data. One of the main applications for this work is the discrimination between blast events and earthquakesFomel, Sergey. " Local seismic attributes." , Geophysics, 72.3 (2007): A29-A33.Cohen, Leon. " Time frequency analysis theory and applications." USA: Prentice Hall, (1995).Farquharson, Colin G., and Douglas W. Oldenburg. "A comparison of automatic techniques for estimating the regularization parameter in non-linear inverse problems." Geophysical Journal International 156.3 (2004): 411-425.Taner, M. Turhan, Fulton Koehler, and R. E. Sheriff. " Complex seismic trace analysis." Geophysics, 44.6 (1979): 1041-1063.
Fast coliform detection in portable microbe enrichment unit (PMEU) with Colilert(®) medium and bubbling.

PubMed

Hakalehto, Elias; Heitto, Anneli; Heitto, Lauri

2013-09-01

Laboratory strains of coliforms Escherichia coli and Klebsiella mobilis were used to artificially contaminate water samples in two different cultivation and detection systems, without and with bubble flow. Samples were collected with an automated system (ASCS). The positive coliform signal caused the color change into yellow (at 550-570nm). This signal could also be transmitted on-line to cell phones. E. coli containing samples emitted UV fluorescence at 480-560nm when activated by UV light. If cultivation was started with inocula varying from 10,000 to 1cfu/ml, the positive detection was obtained between 2 and 18h, respectively, in Colilert medium using Coline PMEU device without gas bubbling. Accordingly, a single K. mobilis cell produced detectable growth in 18h. Various clinical E. coli strains were compared to each other with equal inoculum sizes, and they showed slight variations in the initiation and speed of growth. The gas bubble flow in PMEU Spectrion promoted the mixing and interaction of bacteria and indicator media and speeded the onset of growth. Carbon dioxide also accelerated bacterial growth. In the presence of vancomycin, the onset of E. coli culture growth was speeded up by the volatile outlet flow from previous cultures. In the last cultivation syringe in a series of five, the lag phase disappeared and the growth of the inoculum continued without major interruption. the stimulation of the cultures by the gas flow turned out to be a useful means for improving the detection of indicator bacteria. It could also be used in combination with antibiotic selection in the broth medium. Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.
Two kinds of potentiality: a critique of McGinn on the ethics of abortion.

PubMed

Jacquette, D

2001-01-01

In Moral Literacy, or How to Do the Right Thing, Colin McGinn proposes a consequentialist solution to the abortion dilemma. McGinn interprets moral rights and moral interests as attributable only to actually sentient beings by virtue of their ability to experience pleasure or pain. McGinn argues against the moral rights of potentially conscious human fetuses, on the grounds that the unjoined ova and spermatoza of any fertile men and women are also potentially sentient, but we do not generally suppose that unjoined human genetic germ plasm has moral rights. I argue that McGinn's reply equivocates between two different senses of 'potential sentience.' I distinguish between strong and weak potentiality, or between naturally probably potentiality and merely logically possible potentiality. I agree that it is reasonable to deny that a weak or merely logically possible potentially sentient fetus that would result from any unjoined ovum and sperm has a moral right to life. But I claim that this fact does not diminish the plausibility of extending a moral right or potential moral right to life to a naturally probable potentially sentient fetus, which we have good reason to believe will actually become sentient in the natural course of things if nothing is done to prevent its normal development. I conclude that it is not merely the potentiality, but the strong potentiality of a healthy, normally developing fetus that is soon to acquire sentience, moral interests, and, on McGinn's own terms, a moral right to life, that continues to sustain the abortion controversy, even among those who also want respect a woman's right to reproductive self-determination.
Extinction Maps and Dust-to-gas Ratios in Nearby Galaxies with LEGUS

NASA Astrophysics Data System (ADS)

Kahre, L.; Walterbos, R. A.; Kim, H.; Thilker, D.; Calzetti, D.; Lee, J. C.; Sabbi, E.; Ubeda, L.; Aloisi, A.; Cignoni, M.; Cook, D. O.; Dale, D. A.; Elmegreen, B. G.; Elmegreen, D. M.; Fumagalli, M.; Gallagher, J. S., III; Gouliermis, D. A.; Grasha, K.; Grebel, E. K.; Hunter, D. A.; Sacchi, E.; Smith, L. J.; Tosi, M.; Adamo, A.; Andrews, J. E.; Ashworth, G.; Bright, S. N.; Brown, T. M.; Chandar, R.; Christian, C.; de Mink, S. E.; Dobbs, C.; Evans, A. S.; Herrero, A.; Johnson, K. E.; Kennicutt, R. C.; Krumholz, M. R.; Messa, M.; Nair, P.; Nota, A.; Pellerin, A.; Ryon, J. E.; Schaerer, D.; Shabani, F.; Van Dyk, S. D.; Whitmore, B. C.; Wofford, A.

2018-03-01

We present a study of the dust-to-gas ratios in five nearby galaxies: NGC 628 (M74), NGC 6503, NGC 7793, UGC 5139 (Holmberg I), and UGC 4305 (Holmberg II). Using Hubble Space Telescope broadband WFC3/UVIS UV and optical images from the Treasury program Legacy ExtraGalactic UV Survey (LEGUS) combined with archival HST/Advanced Camera for Surveys data, we correct thousands of individual stars for extinction across these five galaxies using an isochrone-matching (reddening-free Q) method. We generate extinction maps for each galaxy from the individual stellar extinctions using both adaptive and fixed resolution techniques and correlate these maps with neutral H I and CO gas maps from the literature, including the H I Nearby Galaxy Survey and the HERA CO-Line Extragalactic Survey. We calculate dust-to-gas ratios and investigate variations in the dust-to-gas ratio with galaxy metallicity. We find a power-law relationship between dust-to-gas ratio and metallicity, consistent with other studies of dust-to-gas ratio compared to metallicity. We find a change in the relation when H2 is not included. This implies that underestimation of {N}{{{H}}2} in low-metallicity dwarfs from a too-low CO-to-H2 conversion factor X CO could have produced too low a slope in the derived relationship between dust-to-gas ratio and metallicity. We also compare our extinctions to those derived from fitting the spectral energy distribution (SED) using the Bayesian Extinction and Stellar Tool for NGC 7793 and find systematically lower extinctions from SED fitting as compared to isochrone matching.
Increased pulse wave velocity in patients with acute lacunar infarction doubled the risk of future ischemic stroke.

PubMed

Saji, Naoki; Murotani, Kenta; Shimizu, Hirotaka; Uehara, Toshiyuki; Kita, Yasushi; Toba, Kenji; Sakurai, Takashi

2017-04-01

The aim of this study was to determine whether pulse wave velocity (PWV), a marker of vascular endothelial impairment and arteriosclerosis, predicts future ischemic stroke in patients who developed acute lacunar infarction. Patients with a first-ever ischemic stroke due to acute lacunar infarction were enrolled in this study. An oscillometric device (Form PWV/ABI; Omron Colin, Tokyo, Japan) was used to measure brachial-ankle PWV 1 week after stroke onset. Patients were followed for at least 5 years. The main end point of the study was recurrent ischemic stroke. Event-free survival was analyzed using Kaplan-Meier plots and log-rank tests. The risk of recurrent ischemic stroke was estimated using the Cox proportional-hazards model. Of the 156 patients (61% male, mean age: 69.2±11.3 years) assessed in this study, 29 developed recurrent ischemic stroke. The median brachial-ankle PWV value was 20.4 m s -1 . Patients with high PWV values had a greater risk of recurrent ischemic stroke than patients with low PWV values (28% vs. 15%, P=0.08). Kaplan-Meier curve analysis showed that patients with high PWV values had a less favorable (that is, free of recurrent ischemic stroke) survival time (P=0.015). A multivariate Cox proportional-hazards model identified high PWV as an independent predictor of recurrent ischemic stroke after adjusting for age, sex and blood pressure (hazard ratio 2.35, 95% confidence interval, 1.02-5.70, P=0.044). In patients with acute lacunar infarction, a high PWV predicts a twofold greater risk of future ischemic stroke, independent of patient age, sex and blood pressure levels.
Reported Theory Use by Digital Interventions for Hazardous and Harmful Alcohol Consumption, and Association With Effectiveness: Meta-Regression.

PubMed

Garnett, Claire; Crane, David; Brown, Jamie; Kaner, Eileen; Beyer, Fiona; Muirhead, Colin; Hickman, Matthew; Redmore, James; de Vocht, Frank; Beard, Emma; Michie, Susan

2018-02-28

Applying theory to the design and evaluation of interventions is likely to increase effectiveness and improve the evidence base from which future interventions are developed, though few interventions report this. The aim of this paper was to assess how digital interventions to reduce hazardous and harmful alcohol consumption report the use of theory in their development and evaluation, and whether reporting of theory use is associated with intervention effectiveness. Randomized controlled trials were extracted from a Cochrane review on digital interventions for reducing hazardous and harmful alcohol consumption. Reporting of theory use within these digital interventions was investigated using the theory coding scheme (TCS). Reported theory use was analyzed by frequency counts and descriptive statistics. Associations were analyzed with meta-regression models. Of 41 trials involving 42 comparisons, half did not mention theory (50% [21/42]), and only 38% (16/42) used theory to select or develop the intervention techniques. Significant heterogeneity existed between studies in the effect of interventions on alcohol reduction (I 2 =77.6%, P<.001). No significant associations were detected between reporting of theory use and intervention effectiveness in unadjusted models, though the meta-regression was underpowered to detect modest associations. Digital interventions offer a unique opportunity to refine and develop new dynamic, temporally sensitive theories, yet none of the studies reported refining or developing theory. Clearer selection, application, and reporting of theory use is needed to accurately assess how useful theory is in this field and to advance the field of behavior change theories. ©Claire Garnett, David Crane, Jamie Brown, Eileen Kaner, Fiona Beyer, Colin Muirhead, Matthew Hickman, James Redmore, Frank de Vocht, Emma Beard, Susan Michie. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 28.02.2018.
The Holocene Geoarchaeology of the Desert Nile in Northern Sudan

NASA Astrophysics Data System (ADS)

Woodward, Jamie; Macklin, Mark; Spencer, Neal; Welsby, Derek; Dalton, Matthew; Hay, Sophie; Hardy, Andrew

2016-04-01

Invited Paper Forty years ago Colin Renfrew declared that "every archaeological problem starts as a problem in geoarchaeology" (Renfrew, 1976 p. 2). With this assertion in mind, this paper draws upon the findings from field research in two sectors of the Nile Valley of Northern Sudan dedicated to the exploration of human-environment interactions during the middle and late Holocene. This part of the Nile corridor contains a rich cultural record and an exceptionally well preserved Holocene fluvial archive. A distinctive feature of these records is the variety of evidence for interaction between desert and river over a range of spatial and temporal scales. This interaction presented both challenges and opportunities for its ancient inhabitants. This paper will present evidence for large-scale landscape changes driven by shifts in global climate. It will also show how we have integrated the archaeological and geological records in the Northern Dongola Reach and at Amara West - where long-term field projects led by archaeologists from the British Museum have recognised the importance of a sustained commitment to interdisciplinary research to achieve a fully integrated geoarchaeological approach across a range of scales. The former project is a large-scale landscape survey with multiple sites across an 80 km reach of the Nile whilst the latter has a strong focus on a single New Kingdom town site and changes in its environmental setting. By combining multiple archaeological and geological datasets - and pioneering the use of OSL dating and strontium isotope analysis in the Desert Nile - we have developed a new understanding of human responses to Holocene climate and landscape change in this region. Renfrew, C. (1976) Archaeology and the earth sciences. In: D.A. Davidson and M.I. Shackley (eds) Geoarchaeology: Earth Science and the Past, Duckworth, London, 1-5.
Skull and cerebrospinal fluid effects on microwave radiation propagation in human brain

NASA Astrophysics Data System (ADS)

Ansari, M. A.; Zarei, M.; Akhlaghipour, N.; Niknam, A. R.

2017-12-01

The determination of microwave absorption distribution in the human brain is necessary for the detection of brain tumors using thermo-acoustic imaging and for removing them using hyperthermia treatment. In contrast to ionizing radiation, hyperthermia treatment can be applied to remove tumors inside the brain without the concern of including secondary malignancies, which typically form from the neuronal cells of the septum pellucidum. The aim of this study is to determine the microwave absorption distribution in an adult human brain and to study the effects of skull and cerebrospinal fluid on the propagation of microwave radiation inside the brain. To this end, we simulate the microwave absorption distribution in a realistic adult brain model (Colin 27) using the mesh-based Monte Carlo (MMC) method. This is because in spite of there being other numerical methods, the MMC does not require a large memory, even for complicated geometries, and its algorithm is simple and easy to implement with low computational cost. The brain model is constructed using high-resolution (1 mm isotropic voxel) and low noise magnetic resonance imaging (MRI) scans and its volume contains 181×217×181 voxels, covering the brain completely. Using the MMC method, the radiative transport equation is solved and the absorbed microwave energy distribution in different brain regions is obtained without any fracture or anomaly. The simulation results show that the skull and cerebrospinal fluid guide the microwave radiation and suppress its penetration through deep brain compartments as a shielding factor. These results reveal that the MMC can be used to predict the amount of required energy to increase the temperature inside the tumour during hyperthermia treatment. Our results also show why a deep tumour inside an adult human brain cannot be efficiently treated using hyperthermia treatment. Finally, the accuracy of the presented numerical method is verified using the signal flow graph technique.
Empirical Quantification of the Runaway Greenhouse Limit on Earth

NASA Astrophysics Data System (ADS)

Goldblatt, C.; Dewey, M. C.

2015-12-01

There have been many modeling studies of the runaway greenhouse effect and the conditions required to produce one on an Earth-like planet, however these models have not been verified with empirical evidence. It has been suggested that the Earth's tropics may be near a state of localized runaway greenhouse, meaning the surface temperature and atmospheric composition in those areas could cause runaway greenhouse, were it not for the tempering effects of meridional heat transport and circulation (Pierrehumbert, 1995). Using the assumption that some areas of the Earth's tropics may be under these conditions, this study uses measurements of the atmospheric properties, surface properties, and radiation budgets of these areas to quantify a radiation limit for runaway greenhouse on Earth, by analyzing the dependence of outgoing longwave radiation (OLR) at the top of the atmosphere on surface temperature and total column water vapour. An upper limit on OLR for clear-sky conditions was found between 289.8 W/m2 and 292.2 W/m2, which occurred at surface temperatures near 300K. For surface temperatures above this threshold, total column water vapour increased, but OLR initially decreased and then remained relatively constant, between 273.6 W/m2 and 279.7 W/m2. These limits are in good agreement with recent modeling results (Goldblatt et al., 2013), supporting the idea that some of the Earth's tropics may be in localized runaway greenhouse, and that radiation limits for runaway greenhouse on Earth can be empirically derived. This research was done as part of Maura Dewey's undergraduate honours thesis at the University of Victoria. Refs: Robert T. Pierrehumbert. Thermostats, radiator fins, and the local runaway greenhouse. Journal of Atmospheric Sciences, 52(10):1784-1806, 1995. Colin Goldblatt, Tyler D. Robinson, Kevin J. Zahnle, and David Crisp. Low simulated radiation limit for runaway greenhouse climates. Nature Geoscience, 6:661-667, 2013.
An Investigation of the Interstellar Environment of Supernova Remnant CTB87

NASA Astrophysics Data System (ADS)

Liu, Qian-Cheng; Chen, Yang; Chen, Bing-Qiu; Zhou, Ping; Wang, Xiao-Tao; Su, Yang

2018-06-01

We present a new millimeter CO-line observation toward supernova remnant (SNR) CTB 87, which was regarded purely as a pulsar wind nebula (PWN), and an optical investigation of a coincident surrounding superbubble. The CO observation shows that the SNR delineated by the radio emission is projectively covered by a molecular cloud (MC) complex at {V}LSR}=-60 to -54 {km} {{{s}}}-1. Both the symmetric axis of the radio emission and the trailing X-ray PWN appear projectively to be along a gap between two molecular gas patches at ‑58 to -57 {km} {{{s}}}-1. Asymmetric broad profiles of 12CO lines peaked at -58 {km} {{{s}}}-1 are found at the eastern and southwestern edges of the radio emission. This represents a kinematic signature consistent with an SNR–MC interaction. We also find that a superbubble, ∼37‧ in radius, appears to surround the SNR from H I 21 cm ({V}LSR}∼ -61 to -68 {km} {{{s}}}-1), WISE mid-IR, and optical extinction data. We build a multi-band photometric stellar sample of stars within the superbubble region and find 82 OB star candidates. The likely peak distance in the stars’ distribution seems consistent with the distance previously suggested for CTB 87. We suggest the arc-like radio emission is mainly a relic of the part of the blast wave that propagates into the MC complex and is now in a radiative stage while the other part of the blast wave has been expanding into the low-density region in the superbubble. This scenario naturally explains the lack of X-ray emission related to the ejecta and blast wave. The SNR–MC interaction also favors a hadronic contribution to the γ-ray emission from the CTB 87 region.

The nodal count {0,1,2,3,…} implies the graph is a tree

PubMed Central

Band, Ram

2014-01-01

Sturm's oscillation theorem states that the nth eigenfunction of a Sturm–Liouville operator on the interval has n−1 zeros (nodes) (Sturm 1836 J. Math. Pures Appl. 1, 106–186; 373–444). This result was generalized for all metric tree graphs (Pokornyĭ et al. 1996 Mat. Zametki 60, 468–470 (doi:10.1007/BF02320380); Schapotschnikow 2006 Waves Random Complex Media 16, 167–178 (doi:10.1080/1745530600702535)) and an analogous theorem was proved for discrete tree graphs (Berkolaiko 2007 Commun. Math. Phys. 278, 803–819 (doi:10.1007/S00220-007-0391-3); Dhar & Ramaswamy 1985 Phys. Rev. Lett. 54, 1346–1349 (doi:10.1103/PhysRevLett.54.1346); Fiedler 1975 Czechoslovak Math. J. 25, 607–618). We prove the converse theorems for both discrete and metric graphs. Namely if for all n, the nth eigenfunction of the graph has n−1 zeros, then the graph is a tree. Our proofs use a recently obtained connection between the graph's nodal count and the magnetic stability of its eigenvalues (Berkolaiko 2013 Anal. PDE 6, 1213–1233 (doi:10.2140/apde.2013.6.1213); Berkolaiko & Weyand 2014 Phil. Trans. R. Soc. A 372, 20120522 (doi:10.1098/rsta.2012.0522); Colin de Verdière 2013 Anal. PDE 6, 1235–1242 (doi:10.2140/apde.2013.6.1235)). In the course of the proof, we show that it is not possible for all (or even almost all, in the metric case) the eigenvalues to exhibit a diamagnetic behaviour. In addition, we develop a notion of ‘discretized’ versions of a metric graph and prove that their nodal counts are related to those of the metric graph. PMID:24344337
Thermal Energy Conversion Branch

NASA Technical Reports Server (NTRS)

Bielozer, Matthew C.; Schreiber, Jeffrey, G.; Wilson, Scott D.

2004-01-01

The Thermal Energy Conversion Branch (5490) leads the way in designing, conducting, and implementing research for the newest thermal systems used in space applications at the NASA Glenn Research Center. Specifically some of the most advanced technologies developed in this branch can be broken down into four main areas: Dynamic Power Systems, Primary Solar Concentrators, Secondary Solar Concentrators, and Thermal Management. Work was performed in the Dynamic Power Systems area, specifically the Stirling Engine subdivision. Today, the main focus of the 5490 branch is free-piston Stirling cycle converters, Brayton cycle nuclear reactors, and heat rejection systems for long duration mission spacecraft. All space exploring devices need electricity to operate. In most space applications, heat energy from radioisotopes is converted to electrical power. The Radioisotope Thermoelectric Generator (RTG) already supplies electricity for missions such as the Cassini Spacecraft. The focus of today's Stirling research at GRC is aimed at creating an engine that can replace the RTG. The primary appeal of the Stirling engine is its high system efficiency. Because it is so efficient, the Stirling engine will significantly reduce the plutonium fuel mission requirements compared to the RTG. Stirling is also being considered for missions such as the lunar/Mars bases and rovers. This project has focused largely on Stirling Engines of all types, particularly the fluidyne liquid piston engine. The fluidyne was developed by Colin D. West. This engine uses the same concepts found in any type of Stirling engine, with the exception of missing mechanical components. All the working components are fluid. One goal was to develop and demonstrate a working Stirling Fluidyne Engine at the 2nd Annual International Energy Conversion Engineering Conference in Providence, Rhode Island.
[Possibilities of a software-based hybrid single photon emission computed tomography/magnetic resonance imaging in the diagnosis of complicated diabetic foot syndrome].

PubMed

Zavadovskaya, V D; Zorkal'tsev, M A; Udodov, V D; Zamyshevskaya, M A; Kilina, O Yu; Kurazhov, A P; Popov, K M

2015-01-01

To give the results of a software-based hybrid single photon emission computed tomography/magnetic resonance imaging (SPECT/MRI) in detecting osteomyelitis (OM) in patients with diabetic foot syndrome (DFS). Seventy-six patients (35 men and 41 women) (mean age, 59.4 +/- 7.1 years) with type 1 and 2 diabetes mellitus and suspected OM were examined. The investigation enrolled patients with neuropathic (n = 25), ischemic (n = 13), and mixed (n = 38) DFS. All the patients underwent (99m)Tc-HMPAO/ (99m)Tc-technefit labeled leukocyte scintigraphy; magnetic resonance imaging was performed in 30 patients. The results were combined using RView 9.06 software (Colin Studholme). Labeled leukocyte SPECT to Diagnose OM yielded 255 true positive (TP), 38 true negative (TN), 12 false negative (FP), and 1 false negative (FN) results. The accuracy of the technique was 82.9%. The FP results were due to the low resolution of the technique and to the small sizes of the object under study. One FN result was detected in a patient with ischemic DFS because of reduced blood flow. MRI to identify OM in patients with DFS provided 20 TP, 16 TN, 4 FP, and 2 FN results. Its diagnostic accuracy was 85.7%. The relative low specificity of MRI was associated with the presence of FP results due to the complexity of differential diagnosis of bone marrow edema and inflammatory infiltration. Assessing 42 hybrid SPECT/MR-images revealed 21 TP, 17 TN, 3 FP, and I FN results. The diagnostic accuracy was equal to 95.9%. Thus, comparing MRI (90.9% sensitivity and 80.0% specificity), labeled leukocyte scintigraphy (96.2% sensitivity and 76.0% specificity), and hybrid SPECT/MRI (95.5% sensitivity and 85.0% specificity) showed the high diagnostic efficiency of the latter.
Selling the brand inside.

PubMed

Mitchell, Colin

2002-01-01

When you think of marketing, chances are your mind goes right to your customers--how can you persuade more people to buy whatever it is you sell? But there's another "market" that's equally important: your employees. Author Colin Mitchell argues that executives by and large ignore this critical internal audience when developing and executing branding campaigns. As a result, employees end up undermining the expectations set by the company's advertising--either because they don't understand what the ads have promised or because they don't believe in the brand and feel disengaged or, worse, hostile toward the company. Mitchell offers three principles for executing internal branding campaigns--techniques executives can use to make sure employees understand, embrace, and "live" the brand vision companies are selling to the public. First, he says, companies need to market to employees at times when the company is experiencing a fundamental challenge or change, times when employees are seeking direction and are relatively receptive to new initiatives. Second, companies must link their internal and external marketing campaigns; employees should hear the same messages that are being sent to the market-place. And third, internal branding campaigns should bring the brand alive for employees, creating an emotional connection to the company that transcends any one experience. Internal campaigns should introduce and explain the brand messages in new and attention-grabbing ways and then reinforce those messages by weaving them into the fabric of the company. It is a fact of business, writes Mitchell, that if employees do not care about or understand their company's brands, they will ultimately weaken their organizations. It's up to top executives, he says, to give them a reason to care.
Historical anthropogenic and biofuel burning emissions of carbon monoxide, 1850-2000

NASA Astrophysics Data System (ADS)

Liu, L.; Zarzycki, C. M.; Winijkul, E.; Bond, T. C.

2011-12-01

Liang Liu, Colin Zarzycki, Ekbordin Winijkul, Tami C. Bond Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA Carbon monoxide (CO) plays an important role in atmospheric chemistry by acting as the primary sink of the most important atmospheric oxidizer, hydroxyl radicals (OH), and participating in the cycle of tropospheric ozone. CO can also provide constraints on model prediction of black carbon (BC) and vice versa due to their common sources of incomplete combustion. A well developed historical emission inventory of CO would serve the purpose of various global atmospheric models over the historical record. Only a few attempts have been made to represent the time dependence of CO emissions. In this study, we present the first technology based global historical trend of anthropogenic and biofuel emissions of CO from 1850 to 2000. The essential components of a bottom-up emission inventory are technology divisions, fuel consumptions for each technology, and emission factors for each combination of fuel and technology. Previous research done by Bond et al., [2007] has provided this study with technology breakdowns for different combinations of fuel and usage and the time trends of fuel-use for each specific technology in activities that contribute to BC emissions. This work reconstructs the fuel-use trend of the brick and cement industries which were not included in the historical BC emission inventory but play an important role in CO emission. Emission factors are developed for past and present CO emitters. Fuel consumption and emission factors are then combined to estimate global CO emissions at the country level. Uncertainty analysis in activity data, technology splits, and emission factors are performed. The developed historical CO emission trend is compared with the historical BC emission trend to provide more insight into the relationship of the two pollutants.
Morrow, Reiff, Receive 2013 Space Physics and Aeronomy Richard Carrington Awards: Response

NASA Astrophysics Data System (ADS)

Reiff, Patricia H.

2014-08-01

It is a special privilege to receive this award honoring Richard Carrington's discovery of what we now call space weather. It is particularly appropriate that this award also recognizes Cherilynn Morrow, who 20 years ago made a presentation to the Space Science Advisory Committee on Jeff Rosendhal's idea of mission-based E/PO. We worked together, bringing that idea to the successful, but threatened, network it is today. For me, learning and teaching go hand in hand—as we publish our findings for our peers, we should also repay the public investment in our research with accurate, understandable results. My interest in space science was sparked by a father-daughter course in astronomy sponsored by the Brownies at the Oklahoma City Planetarium and kindled by the Bell Labs production The Strange Case of the Cosmic Rays directed by Frank Capra. Knowing that planetarium shows and educational movies can change lives, I have devoted a large portion of my last 25 years to creating software, shows, and portable planetariums to inspire and engage youth. This has not been a one-person effort, of course. My work Cherilynn Ann Morrow would have been impossible without the collaboration of Carolyn Sumners, vice president of the Houston Museum of Natural Science. Our museum kiosk and planetarium control software would not have happened without the skill and perseverance of my chief programmer, Colin Law. Jim Burch has been first a mentor and then a colleague on both the research and outreach sides of my career. I share this honor with a long line of highly talented students and postdocs who have contributed science content and outreach efforts. Most importantly, without the support of my husband, Tom Hill, I would not have had the time and freedom to build an educational network while continuing research and raising a family. I thank AGU for bestowing this honor.
Quantification of the Interrelationship between Brachial-Ankle and Carotid-Femoral Pulse Wave Velocity in a Workplace Population.

PubMed

Cheng, Yi-Bang; Li, Yan; Sheng, Chang-Sheng; Huang, Qi-Fang; Wang, Ji-Guang

2016-04-01

Brachial-ankle pulse wave velocity (PWV) is increasingly used for the measurement of arterial stiffness. In the present study, we quantified the interrelationship between brachial-ankle and carotid-femoral PWV in a workplace population, and investigated the associations with cardiovascular risk factors and carotid intima-media thickness (IMT). Brachial-ankle and carotid-femoral PWV were measured using the Omron-Colin VP1000 and SphygmoCor devices, respectively. We investigated the interrelationship by the Pearson's correlation analysis and Bland-Altman plot, and performed sensitivity and specificity analyses. The 954 participants (mean ± standard deviation age 42.6 ± 14.2 years) included 630 (66.0%) men and 203 (21.3%) hypertensive patients. Brachial-ankle (13.4 ± 2.7 m/s) and carotid-femoral PWV (7.3 ± 1.6 m/s) were significantly correlated in all subjects (r = 0.75) as well as in men (r = 0.72) and women (r = 0.80) separately. For arterial stiffness defined as a carotid-femoral PWV of 10 m/s or higher, the sensitivity and specificity of brachial-ankle PWV of 16.7 m/s or higher were 72 and 94%, respectively. The area under the receiver operating characteristic curve was 0.953. In multiple stepwise regression, brachial-ankle and carotid-femoral PWV were significantly (p < 0.001) associated with age (partial r = 0.33 and 0.34, respectively) and systolic blood pressure (partial r = 0.71 and 0.66, respectively). In addition, brachial-ankle and carotid-femoral PWV were significantly (p < 0.001) associated with carotid IMT (r = 0.57 and 0.55, respectively) in unadjusted analysis, but not in analysis adjusted for cardiovascular risk factors (p ≥ 0.08). Brachial-ankle and carotid-femoral PWV were closely correlated, and had similar determinants. Brachial-ankle PWV can behave as an ease-of-use alternative measure of arterial stiffness for assessing cardiovascular risk.
DOE Office of Scientific and Technical Information (OSTI.GOV)

NONE

The role of the Radiation Safety Officer at a medical facility can be complicated. The complexity of the position is based on the breadth of services provided at the institution and the nature of the radioactive materials license. Medical practices are constantly changing and the use of ionizing radiation continues to rise in this area. Some of the newer medical applications involving radiation have unique regulatory and safety issues that must be addressed. Oversight of the uses of radiation start at the local level (radiation safety officer, radiation safety committee) and are heavily impacted by outside agencies (i.e. Nuclear Regulatorymore » Commission, State Radiologic Health, The Joint Commission (TJC), etc). This session will provide both an overview of regulatory oversight and essential compliance practices as well as practical ways to assess and introduce some of the new applications utilizing radioactive materials into your medical facility. Learning Objectives: Regulatory Compliance and Safety with New Radiotherapies: Spheres and Ra-223 (Lance Phillips) Understand the radioactive materials license amendment process to add new radiotherapies (i.e., SIR-Spheres, Therasphere, Xofigo). Understand the AU approval process for microspheres and Xofigo. Examine the training and handling requirements for new procedures. Understand the process involved with protocol development, SOP in order to define roles and responsibilities. The RSO and The RSC: Challenges and Opportunities (Colin Dimock) Understand how to form an effective Committee. Examine what the Committee does for the Program and the RSO. Understand the importance of Committee engagement. Discuss the balance of the complimentary roles of the RSO and the Committee. The Alphabet Soup of Regulatory Compliance: Being Prepared for Inspections (Linda Kroger) Recognize the various regulatory bodies and organizations with oversight or impact in Nuclear Medicine, Radiology and Radiation Oncology. Examine 10CFR35
Precision Spectroscopy in Cold Molecules: the First Rotational Intervals of He_2^+ by High-Resolution Spectroscopy and Rydberg-Series Extrapolation

NASA Astrophysics Data System (ADS)

Jansen, Paul; Semeria, Luca; Scheidegger, Simon; Merkt, Frederic

2015-06-01

Having only three electrons, He_2^+ represents a system for which highly accurate ab initio calculations are possible. The latest calculation of rovibrational energies in He_2^+ do not include relativistic or QED corrections but claim an accuracy of about 120 MHz The available experimental data on He_2^+, though accurate to 300 MHz, are not precise enough to rigorously test these calculations or reveal the magnitude of the relativistic and QED corrections. We have performed high-resolution Rydberg spectroscopy of metastable He_2 molecules and employed multichannel-quantum-defect-theory extrapolation techniques to determine the rotational energy-level structure in the He_2^+ ion. To this end we have produced samples of helium molecules in the a ^3σ_u^+ state in supersonic beams with velocities tunable down to 100 m/s by combining a cryogenic supersonic-beam source with a multistage Zeeman decelerator. The metastable He_2 molecules are excited to np Rydberg states using the frequency doubled output of a pulse-amplified ring dye laser. Although the bandwidth of the laser systems is too large to observe the reduction of the Doppler width resulting from deceleration, the deceleration greatly simplifies the spectral assignments because of its spin-rotational state selectivity. Our approach enabled us to determine the rotational structure of He_2^+ with unprecedented accuracy, to determine the size of the relativistic and QED corrections by comparison with the results of Ref.~a and to precisely measure the rotational structure of the metastable state for comparison with the results of Focsa~et al. W.-C. Tung, M. Pavanello, L. Adamowicz, J. Chem. Phys. 136, 104309 (2012). D. Sprecher, J. Liu, T. Krähenmann, M. Schäfer, and F. Merkt, J. Chem. Phys. 140, 064304 (2014). M. Motsch, P. Jansen, J. A. Agner, H. Schmutz, and F. Merkt, Phys. Rev. A 89, 043420 (2014). C. Focsa, P. F. Bernath, and R. Colin, J. Mol. Spectrosc. 191, 209 (1998).
Strategic Options Development and Analysis

NASA Astrophysics Data System (ADS)

Ackermann, Fran; Eden, Colin

Strategic Options Development and Analysis (SODA) enables a group or individual to construct a graphical representation of a problematic situation, and thus explore options and their ramifications with respect to a complex system of goals or objectives. In addition the method aims to help groups arrive at a negotiated agreement about how to act to resolve the situation. It is based upon the use of causal mapping - a formally constructed means-ends network - as representation form. Because the picture has been constructed using the natural language of the problem owners it becomes a model of the situation that is ‘owned' by those who define the problem. The use of formalities for the construction of the model makes it amenable to a range of analyses as well as encouraging reflection and a deeper understanding. These analyses can be used in a ‘rough and ready' manner by visual inspection or through the use of specialist causal mapping software (Decision Explorer). Each of the analyses helps a group or individual discover important features of the problem situation, and these features facilitate agreeing agood solution. The SODA process is aimed at helping a group learn about the situation they face before they reach agreements. Most significantly the exploration through the causal map leads to a higher probability of more creative solutions and promotes solutions that are more likely to be implemented because the problem construction process is wider and more likely to include richer social dimensions about the blockages to action and organizational change. The basic theories that inform SODA derive from cognitive psychology and social negotiation, where the model acts as a continuously changing representation of the problematic situation - changing as the views of a person or group shift through learning and exploration. This chapter, jointly written by two leading practitioner academics and the original developers of SODA, Colin Eden and Fran Ackermann
MO-AB-201-02: The RSO and The RSC: Challenges and Opportunities

DOE Office of Scientific and Technical Information (OSTI.GOV)

Dimock, C.

2015-06-15

The role of the Radiation Safety Officer at a medical facility can be complicated. The complexity of the position is based on the breadth of services provided at the institution and the nature of the radioactive materials license. Medical practices are constantly changing and the use of ionizing radiation continues to rise in this area. Some of the newer medical applications involving radiation have unique regulatory and safety issues that must be addressed. Oversight of the uses of radiation start at the local level (radiation safety officer, radiation safety committee) and are heavily impacted by outside agencies (i.e. Nuclear Regulatorymore » Commission, State Radiologic Health, The Joint Commission (TJC), etc). This session will provide both an overview of regulatory oversight and essential compliance practices as well as practical ways to assess and introduce some of the new applications utilizing radioactive materials into your medical facility. Learning Objectives: Regulatory Compliance and Safety with New Radiotherapies: Spheres and Ra-223 (Lance Phillips) Understand the radioactive materials license amendment process to add new radiotherapies (i.e., SIR-Spheres, Therasphere, Xofigo). Understand the AU approval process for microspheres and Xofigo. Examine the training and handling requirements for new procedures. Understand the process involved with protocol development, SOP in order to define roles and responsibilities. The RSO and The RSC: Challenges and Opportunities (Colin Dimock) Understand how to form an effective Committee. Examine what the Committee does for the Program and the RSO. Understand the importance of Committee engagement. Discuss the balance of the complimentary roles of the RSO and the Committee. The Alphabet Soup of Regulatory Compliance: Being Prepared for Inspections (Linda Kroger) Recognize the various regulatory bodies and organizations with oversight or impact in Nuclear Medicine, Radiology and Radiation Oncology. Examine 10CFR35
MO-AB-201-03: The Alphabet Soup of Regulatory Compliance: Being Prepared for Inspections

DOE Office of Scientific and Technical Information (OSTI.GOV)

Kroger, L.

2015-06-15

The role of the Radiation Safety Officer at a medical facility can be complicated. The complexity of the position is based on the breadth of services provided at the institution and the nature of the radioactive materials license. Medical practices are constantly changing and the use of ionizing radiation continues to rise in this area. Some of the newer medical applications involving radiation have unique regulatory and safety issues that must be addressed. Oversight of the uses of radiation start at the local level (radiation safety officer, radiation safety committee) and are heavily impacted by outside agencies (i.e. Nuclear Regulatorymore » Commission, State Radiologic Health, The Joint Commission (TJC), etc). This session will provide both an overview of regulatory oversight and essential compliance practices as well as practical ways to assess and introduce some of the new applications utilizing radioactive materials into your medical facility. Learning Objectives: Regulatory Compliance and Safety with New Radiotherapies: Spheres and Ra-223 (Lance Phillips) Understand the radioactive materials license amendment process to add new radiotherapies (i.e., SIR-Spheres, Therasphere, Xofigo). Understand the AU approval process for microspheres and Xofigo. Examine the training and handling requirements for new procedures. Understand the process involved with protocol development, SOP in order to define roles and responsibilities. The RSO and The RSC: Challenges and Opportunities (Colin Dimock) Understand how to form an effective Committee. Examine what the Committee does for the Program and the RSO. Understand the importance of Committee engagement. Discuss the balance of the complimentary roles of the RSO and the Committee. The Alphabet Soup of Regulatory Compliance: Being Prepared for Inspections (Linda Kroger) Recognize the various regulatory bodies and organizations with oversight or impact in Nuclear Medicine, Radiology and Radiation Oncology. Examine 10CFR35
Usability Testing of the BRANCH Smartphone App Designed to Reduce Harmful Drinking in Young Adults.

PubMed

Milward, Joanna; Deluca, Paolo; Drummond, Colin; Watson, Rod; Dunne, Jacklyn; Kimergård, Andreas

2017-08-08

Electronic screening and brief intervention (eSBI) apps demonstrate potential to reduce harmful drinking. However, low user engagement rates with eSBI reduce overall effectiveness of interventions. As "Digital Natives," young adults have high expectations of app quality. Ensuring that the design, content, and functionality of an eSBI app are acceptable to young adults is an integral stage to the development process. The objective of this study was to identify usability barriers and enablers for an app, BRANCH, targeting harmful drinking in young adults. The BRANCH app contains a drinking diary, alcohol reduction goal setting functions, normative drinking feedback, and information on risks and advice for cutting down. The app includes a social feature personalized to motivate cutting down and to promote engagement with a point-based system for usage. Three focus groups were conducted with 20 users who had tested the app for 1 week. A detailed thematic analysis was undertaken. The first theme, "Functionality" referred to how users wanted an easy-to-use interface, with minimum required user-input. Poor functionality was considered a major usability barrier. The second theme, "Design" described how an aesthetic with minimum text, clearly distinguishable tabs and buttons and appealing infographics was integral to the level of usability. The final theme, "Content" described how participants wanted all aspects of the app to be automatically personalized to them, as well as providing them with opportunities to personalize the app themselves, with increased options for social connectivity. There are high demands for apps such as BRANCH that target skilled technology users including young adults. Key areas to optimize eSBI app development that emerged from testing BRANCH with representative users include high-quality functionality, appealing aesthetics, and improved personalization. ©Joanna Milward, Paolo Deluca, Colin Drummond, Rod Watson, Jacklyn Dunne, Andreas Kimerg
DOE Office of Scientific and Technical Information (OSTI.GOV)

NONE

The ultimate goal of radiotherapy treatment planning is to find a treatment that will yield a high tumor control probability (TCP) with an acceptable normal tissue complication probability (NTCP). Yet most treatment planning today is not based upon optimization of TCPs and NTCPs, but rather upon meeting physical dose and volume constraints defined by the planner. It has been suggested that treatment planning evaluation and optimization would be more effective if they were biologically and not dose/volume based, and this is the claim debated in this month’s Point/Counterpoint. After a brief overview of biologically and DVH based treatment planning bymore » the Moderator Colin Orton, Joseph Deasy (for biological planning) and Charles Mayo (against biological planning) will begin the debate. Some of the arguments in support of biological planning include: this will result in more effective dose distributions for many patients DVH-based measures of plan quality are known to have little predictive value there is little evidence that either D95 or D98 of the PTV is a good predictor of tumor control sufficient validated outcome prediction models are now becoming available and should be used to drive planning and optimization Some of the arguments against biological planning include: several decades of experience with DVH-based planning should not be discarded we do not know enough about the reliability and errors associated with biological models the radiotherapy community in general has little direct experience with side by side comparisons of DVH vs biological metrics and outcomes it is unlikely that a clinician would accept extremely cold regions in a CTV or hot regions in a PTV, despite having acceptable TCP values Learning Objectives: To understand dose/volume based treatment planning and its potential limitations To understand biological metrics such as EUD, TCP, and NTCP To understand biologically based treatment planning and its potential limitations.« less
Ab initio CI study of the electronic spectrum of bismuth iodide employing relativistic effective core potentials

NASA Astrophysics Data System (ADS)

Alekseyev, Aleksey B.; Das, Kalyan K.; Liebermann, Heinz-Peter; Buenker, Robert J.; Hirsch, Gerhard

1995-09-01

A relativistic CI treatment including spin-orbit coupling has been carried out for the low-lying electronic states of bismuth iodide, employing effective core potentials for both atoms. The X 3Σ- ground state is computed to have a zero-field splitting of 5096 cm -1, 1086 cm -1 less than the most recent measured values. The a 1Δ state is predicted to have a Te value of 12336 cm -1, and it is suggested on the basis of correlation effects that the true value should lie about 1000 cm -1 lower. This conclusion is also based in part on the finding that the computed BO +Te value of 24148 cm -1 overestimates the measured result by 759 cm -1. The latter state is shown to arise from an avoided crossing between the 1Σ + and 5ΠΛ- S states, which produces only a relatively shollow well and a slight barrier to dissociation. Because the 3Π state is repulsive, no other low-lying Ω = 0 + state is found in the spectrum, similarly as in SbI but in contrast to BiF. Due to the much greater spin-orbit effects in BiI, the composition of the lowest two excited 0 + states in terms of 1Σ+ and 3ΠΛ- S states is notably different than in SbI and this fact is important in understanding why the Te value of the lowest bound 0 + states of these two systems are so different. Transition probabilities have also been computed for various pairs of vibrational states. The radiative lifetime of the X 21 fine structure component is calculated to be 20.7 ms, which agrees well with a recent measured value of 20 ± 4 ms by Fink and Shestakov. In agreement with Colin et al.'s emperical rule, it is found that the b-X 2 transition is stronger than b-X 1, and this result also confirms an earlier theoretical analysis of this general phenomenon given by the authors.
WE-B-304-03: Biological Treatment Planning

DOE Office of Scientific and Technical Information (OSTI.GOV)

Orton, C.

The ultimate goal of radiotherapy treatment planning is to find a treatment that will yield a high tumor control probability (TCP) with an acceptable normal tissue complication probability (NTCP). Yet most treatment planning today is not based upon optimization of TCPs and NTCPs, but rather upon meeting physical dose and volume constraints defined by the planner. It has been suggested that treatment planning evaluation and optimization would be more effective if they were biologically and not dose/volume based, and this is the claim debated in this month’s Point/Counterpoint. After a brief overview of biologically and DVH based treatment planning bymore » the Moderator Colin Orton, Joseph Deasy (for biological planning) and Charles Mayo (against biological planning) will begin the debate. Some of the arguments in support of biological planning include: this will result in more effective dose distributions for many patients DVH-based measures of plan quality are known to have little predictive value there is little evidence that either D95 or D98 of the PTV is a good predictor of tumor control sufficient validated outcome prediction models are now becoming available and should be used to drive planning and optimization Some of the arguments against biological planning include: several decades of experience with DVH-based planning should not be discarded we do not know enough about the reliability and errors associated with biological models the radiotherapy community in general has little direct experience with side by side comparisons of DVH vs biological metrics and outcomes it is unlikely that a clinician would accept extremely cold regions in a CTV or hot regions in a PTV, despite having acceptable TCP values Learning Objectives: To understand dose/volume based treatment planning and its potential limitations To understand biological metrics such as EUD, TCP, and NTCP To understand biologically based treatment planning and its potential limitations.« less
WE-B-304-02: Treatment Planning Evaluation and Optimization Should Be Biologically and Not Dose/volume Based

DOE Office of Scientific and Technical Information (OSTI.GOV)

Deasy, J.

The ultimate goal of radiotherapy treatment planning is to find a treatment that will yield a high tumor control probability (TCP) with an acceptable normal tissue complication probability (NTCP). Yet most treatment planning today is not based upon optimization of TCPs and NTCPs, but rather upon meeting physical dose and volume constraints defined by the planner. It has been suggested that treatment planning evaluation and optimization would be more effective if they were biologically and not dose/volume based, and this is the claim debated in this month’s Point/Counterpoint. After a brief overview of biologically and DVH based treatment planning bymore » the Moderator Colin Orton, Joseph Deasy (for biological planning) and Charles Mayo (against biological planning) will begin the debate. Some of the arguments in support of biological planning include: this will result in more effective dose distributions for many patients DVH-based measures of plan quality are known to have little predictive value there is little evidence that either D95 or D98 of the PTV is a good predictor of tumor control sufficient validated outcome prediction models are now becoming available and should be used to drive planning and optimization Some of the arguments against biological planning include: several decades of experience with DVH-based planning should not be discarded we do not know enough about the reliability and errors associated with biological models the radiotherapy community in general has little direct experience with side by side comparisons of DVH vs biological metrics and outcomes it is unlikely that a clinician would accept extremely cold regions in a CTV or hot regions in a PTV, despite having acceptable TCP values Learning Objectives: To understand dose/volume based treatment planning and its potential limitations To understand biological metrics such as EUD, TCP, and NTCP To understand biologically based treatment planning and its potential limitations.« less
WE-B-304-01: Treatment Planning Evaluation and Optimization Should Be Dose/volume and Not Biologically Based

DOE Office of Scientific and Technical Information (OSTI.GOV)

Mayo, C.

The ultimate goal of radiotherapy treatment planning is to find a treatment that will yield a high tumor control probability (TCP) with an acceptable normal tissue complication probability (NTCP). Yet most treatment planning today is not based upon optimization of TCPs and NTCPs, but rather upon meeting physical dose and volume constraints defined by the planner. It has been suggested that treatment planning evaluation and optimization would be more effective if they were biologically and not dose/volume based, and this is the claim debated in this month’s Point/Counterpoint. After a brief overview of biologically and DVH based treatment planning bymore » the Moderator Colin Orton, Joseph Deasy (for biological planning) and Charles Mayo (against biological planning) will begin the debate. Some of the arguments in support of biological planning include: this will result in more effective dose distributions for many patients DVH-based measures of plan quality are known to have little predictive value there is little evidence that either D95 or D98 of the PTV is a good predictor of tumor control sufficient validated outcome prediction models are now becoming available and should be used to drive planning and optimization Some of the arguments against biological planning include: several decades of experience with DVH-based planning should not be discarded we do not know enough about the reliability and errors associated with biological models the radiotherapy community in general has little direct experience with side by side comparisons of DVH vs biological metrics and outcomes it is unlikely that a clinician would accept extremely cold regions in a CTV or hot regions in a PTV, despite having acceptable TCP values Learning Objectives: To understand dose/volume based treatment planning and its potential limitations To understand biological metrics such as EUD, TCP, and NTCP To understand biologically based treatment planning and its potential limitations.« less
PREFACE: Brazil MRS Meeting 2014

NASA Astrophysics Data System (ADS)

2015-11-01

The annual meetings, organized by the Brazilian materials research society - B-MRS, are amongst the most import discussion forums in the area of materials science and engineering in Brazil, with a growing interest from the national and international scientific society. In the last 4 years, more than 1,500 participants have attended the B-MRS meetings, promoting an auspicious environment for presentation and discussion of scientific and technological works in the materials science area. The XIII Brazilian Materials Research Society Meeting was held from 28 September to 02 October, 2014, in João Pessoa, PB, Brazil. The Meeting congregated more than 1650 participants from the whole of Brazil and from 28 other countries. More than 2100 abstracts were accepted for presentation, distributed along 19 Symposia following the format used in traditional meetings of Materials Research Societies. These involved topics such as: synthesis of new materials, computer simulations, optical, magnetic and electronic properties, traditional materials as clays and cements, advanced metals, carbon and graphene nanostructures, nanomaterials for nanostructures, energy storage systems, composites, surface engineering and others. A novelty was a symposium dedicated to innovation and technology transfer in materials research. The program also included 7 Plenary Lectures presented by internationally renowned researchers: Alberto Salleo from Stanford University, United States of America; Roberto Dovesi from Universita' degli Studi di Torino, Italy; Luís Antonio F. M. Dias Carlos from Universidade de Aveiro, Portugal; Jean Marie Dubois from Institut Jean-Lamour, France; Sir Colin Humphreys from University of Cambridge, England; Karl Leo from Technische Universität Dresden, Germany; Robert Chang from Northwestern University, Evanston, United States of America. The numbers of participants in the B-MRS meetings have been growing continuously, and in this meeting we had almost 2200 presentations
MO-AB-201-01: Regulatory Compliance and Safety with New Radiotherapies: Spheres and Ra-223

DOE Office of Scientific and Technical Information (OSTI.GOV)

Phillips, L.

2015-06-15

The role of the Radiation Safety Officer at a medical facility can be complicated. The complexity of the position is based on the breadth of services provided at the institution and the nature of the radioactive materials license. Medical practices are constantly changing and the use of ionizing radiation continues to rise in this area. Some of the newer medical applications involving radiation have unique regulatory and safety issues that must be addressed. Oversight of the uses of radiation start at the local level (radiation safety officer, radiation safety committee) and are heavily impacted by outside agencies (i.e. Nuclear Regulatorymore » Commission, State Radiologic Health, The Joint Commission (TJC), etc). This session will provide both an overview of regulatory oversight and essential compliance practices as well as practical ways to assess and introduce some of the new applications utilizing radioactive materials into your medical facility. Learning Objectives: Regulatory Compliance and Safety with New Radiotherapies: Spheres and Ra-223 (Lance Phillips) Understand the radioactive materials license amendment process to add new radiotherapies (i.e., SIR-Spheres, Therasphere, Xofigo). Understand the AU approval process for microspheres and Xofigo. Examine the training and handling requirements for new procedures. Understand the process involved with protocol development, SOP in order to define roles and responsibilities. The RSO and The RSC: Challenges and Opportunities (Colin Dimock) Understand how to form an effective Committee. Examine what the Committee does for the Program and the RSO. Understand the importance of Committee engagement. Discuss the balance of the complimentary roles of the RSO and the Committee. The Alphabet Soup of Regulatory Compliance: Being Prepared for Inspections (Linda Kroger) Recognize the various regulatory bodies and organizations with oversight or impact in Nuclear Medicine, Radiology and Radiation Oncology. Examine 10CFR35

Swelling behaviour of Early Jurassic shales when exposed to water vapour

NASA Astrophysics Data System (ADS)

Houben, Maartje; Barnhoorn, Auke; Peach, Colin; Drury, Martyn

2017-04-01

The presence of water in mudrocks has a largely negative impact on production of gas, due to the fact that water causes swelling of the rock. Removing the water from the mudrock on the other hand could potentially shrink the rock and increase the matrix permeability. Investigation of the swelling/shrinkage behaviour of the rock during exposure to water vapour is of key importance in designing and optimizing unconventional production strategies. We have used outcrop samples of the Whitby Mudstone and the Posidonia shale [1], potential unconventional sources for gas in North-western Europe, to measure the swelling and shrinkage behaviour. Subsamples, 1 mm cubes, were prepared by the Glass Workshop at Utrecht University using a high precision digitally controlled diamond wafering saw cooled by air. The mm cubes were then exposed to atmospheres with different relative humidities either in an Environmental Scanning Electron Microscope (ESEM) or in a 3D dilatometer. So that the sample responses to exposure of water vapour could be measured. Parallel to the bedding we found a swelling strain between 0.5 and 1.5 %, perpendicular to the bedding though swelling strain varied between 1 and 3.5%. Volumetric swelling strain varied between 1 and 2% at a maximum relative humidity of 95%. Volumetric swelling strains measured in the Early Toarcian Shales are similar to the ones found in coal [2], where the results suggest that it might be possible to increase permeability in the reservoir by decreasing the in-situ water activity due to shrinkage of the matrix. [1] M.E. Houben, A. Barnhoorn, L. Wasch, J. Trabucho-Alexandre, C. J. Peach, M.R. Drury (2016). Microstructures of Early Jurassic (Toarcian) shales of Northern Europe, International Journal of Coal Geology, 165, 76-89. [2] Jinfeng Liu, Colin J. Peach, Christopher J. Spiers (2016). Anisotropic swelling behaviour of coal matrix cubes exposed to water vapour: Effects of relative humidity and sample size, International Journal of
Measuring Ancient Air Pressure Using Fossilized Cyanobacteria

NASA Astrophysics Data System (ADS)

Silverman, S. N.; Som, S. M.; Gordon, R.; Bebout, B.

2016-12-01

The evolution of Earth's atmosphere has been governed by biological evolution. The dominant air component, nitrogen, has undergone substantial variation over geological time. Today, the partial pressure of nitrogen is 0.79 bar, but this value could have been much higher during early Earth1. The nitrogen partial pressure is postulated to have dropped to a maximum of 0.5 bar before the Great Oxidation Event 2.4 billion years ago, and subsequently recovered to the 0.8 bar value of our modern atmosphere over the next 330 million years2. We are placing constraints on the trajectory of this recovery by investigating how nitrogen partial pressure influences the morphology of a certain species of filamentous cyanobacteria that has been found fossilized in 2 billion year old rocks. These filamentous cyanobacteria convert nitrogen from its dissolved gaseous state (N2) to a biologically useful state (i.e. NH3) when the latter is present at growth-limiting concentrations in their aquatic environment. Such cyanobacteria develop heterocysts (specialized, visually distinct cells), which fix the nitrogen and laterally distribute it to neighboring cells along the one-dimensional filament. We suggest that the distance between heterocysts reflects the nitrogen partial pressure dissolved in water, which is related to atmospheric pN2 by Henry's law. In the laboratory, we are quantifying the relationship between heterocyst distance, variance and covariance to atmospheric pN2 by subjecting cyanobacteria (in media devoid of nitrate) to different partial pressures of N2 at a constant temperature and lighting for the representative species Anabaena variabilis. As far as we know, such experiments have not been previously conducted. This new geobarometer will complement existing methods of quantifying ancient nitrogen partial pressure. 1Goldblatt, Colin, et al. "Nitrogen-enhanced greenhouse warming on early Earth." Nature Geoscience 2 (2009): 891-896. 2Som, S., et al. "Earth's air pressure 2
Temporal Associations Between Social Activity and Mood, Fatigue, and Pain in Older Adults With HIV: An Ecological Momentary Assessment Study.

PubMed

Paolillo, Emily W; Tang, Bin; Depp, Colin A; Rooney, Alexandra S; Vaida, Florin; Kaufmann, Christopher N; Mausbach, Brent T; Moore, David J; Moore, Raeanne C

2018-05-14

Social isolation is associated with an increased risk for mental and physical health problems, especially among older persons living with HIV (PLWH). Thus, there is a need to better understand real-time temporal associations between social activity and mood- and health-related factors in this population to inform possible future interventions. This study aims to examine real-time relationships between social activity and mood, fatigue, and pain in a sample of older PLWH. A total of 20 older PLWH, recruited from the University of California, San Diego HIV Neurobehavioral Research Program in 2016, completed smartphone-based ecological momentary assessment (EMA) surveys 5 times per day for 1 week. Participants reported their current social activity (alone vs not alone and number of social interactions) and levels of mood (sadness, happiness, and stress), fatigue, and pain. Mixed-effects regression models were used to analyze concurrent and lagged associations among social activity, mood, fatigue, and pain. Participants (mean age 58.8, SD 4.3 years) reported being alone 63% of the time, on average, (SD 31.5%) during waking hours. Being alone was related to lower concurrent happiness (beta=-.300; 95% CI -.525 to -.079; P=.008). In lagged analyses, social activity predicted higher levels of fatigue later in the day (beta=-1.089; 95% CI -1.780 to -0.396; P=.002), and higher pain levels predicted being alone in the morning with a reduced likelihood of being alone as the day progressed (odds ratio 0.945, 95% CI 0.901-0.992; P=.02). The use of EMA elucidated a high rate of time spent alone among older PLWH. Promoting social activity despite the presence of pain or fatigue may improve happiness and psychological well-being in this population. ©Emily W Paolillo, Bin Tang, Colin A Depp, Alexandra S Rooney, Florin Vaida, Christopher N Kaufmann, Brent T Mausbach, David J Moore, Raeanne C Moore. Originally published in JMIR Mental Health (http://mental.jmir.org), 14.05.2018.
Quantification of the Interrelationship between Brachial-Ankle and Carotid-Femoral Pulse Wave Velocity in a Workplace Population

PubMed Central

Cheng, Yi-Bang; Li, Yan; Sheng, Chang-Sheng; Huang, Qi-Fang; Wang, Ji-Guang

2016-01-01

Background Brachial-ankle pulse wave velocity (PWV) is increasingly used for the measurement of arterial stiffness. In the present study, we quantified the interrelationship between brachial-ankle and carotid-femoral PWV in a workplace population, and investigated the associations with cardiovascular risk factors and carotid intima-media thickness (IMT). Methods Brachial-ankle and carotid-femoral PWV were measured using the Omron-Colin VP1000 and SphygmoCor devices, respectively. We investigated the interrelationship by the Pearson's correlation analysis and Bland-Altman plot, and performed sensitivity and specificity analyses. Results The 954 participants (mean ± standard deviation age 42.6 ± 14.2 years) included 630 (66.0%) men and 203 (21.3%) hypertensive patients. Brachial-ankle (13.4 ± 2.7 m/s) and carotid-femoral PWV (7.3 ± 1.6 m/s) were significantly correlated in all subjects (r = 0.75) as well as in men (r = 0.72) and women (r = 0.80) separately. For arterial stiffness defined as a carotid-femoral PWV of 10 m/s or higher, the sensitivity and specificity of brachial-ankle PWV of 16.7 m/s or higher were 72 and 94%, respectively. The area under the receiver operating characteristic curve was 0.953. In multiple stepwise regression, brachial-ankle and carotid-femoral PWV were significantly (p < 0.001) associated with age (partial r = 0.33 and 0.34, respectively) and systolic blood pressure (partial r = 0.71 and 0.66, respectively). In addition, brachial-ankle and carotid-femoral PWV were significantly (p < 0.001) associated with carotid IMT (r = 0.57 and 0.55, respectively) in unadjusted analysis, but not in analysis adjusted for cardiovascular risk factors (p ≥ 0.08). Conclusions Brachial-ankle and carotid-femoral PWV were closely correlated, and had similar determinants. Brachial-ankle PWV can behave as an ease-of-use alternative measure of arterial stiffness for assessing cardiovascular risk. PMID:27195246
PREFACE: 18th Microscopy of Semiconducting Materials Conference (MSM XVIII)

NASA Astrophysics Data System (ADS)

Walther, T.; Hutchison, John L.

2013-11-01

dislocation core structures at atomic resolution. Conference photograph Figure 1. Conference photo taken by JLH inside St Catherine's College Each of the 49 manuscripts submitted for publication in this proceedings volume has been independently reviewed, most by two reviewers, and revised where necessary before being accepted for publication. The Editors are grateful to the following colleagues for their rapid and careful reviewing of manuscripts: R Beanland, C B Boothroyd, P D Brown, D Cherns, A J Craven, K Durose, C J Humphreys, U Kaiser, L Lari, G A Moebus, A G Norman, P Pecz, I M Ross, D J Smith and K Tillmann. Poster prizes were awarded to the following students: joint first prizes to Robert Schewski, Leibniz-Institut für Kristallzüchtung, Berlin and Xiaowei Wu, Rensselaer Polytechnic Institute, Troy; and joint second prizes to Tyche Perkisas, University of Antwerp and Adi Pantzer, Ben Gurion University of the Negev. These presentations indicated both a broad range of microscopy techniques and materials issues covered as well as the excellent standard of microscopy now being achieved by younger scientists. They also reflected the internationality of the attending scientists. On the evening of 9 April 2013, the RMS Annual Materials Lecture was delivered by Professor Sir Colin J Humphreys from the University of Cambridge. Colin's highly entertaining talk on 'How microscopy and semiconductors can help to solve some major world problems' spanned a very broad range, from detailed atomistic investigation of lattice defects in gallium nitride layers by transmission electron microscopy, to the production of new light emitting diodes and its impact on reducing both our electricity bills and the effect of global warming. Entertainment during the conference dinner was provided by the Ariella String Trio, and during the meal we held a friendly competition in which teams had to recognise invited speakers and organisers from photos of them as babies or young children. The organisers
Fermi-LAT observations of the diffuse γ-ray emission: Implications for cosmic rays and the interstellar medium

DOE PAGES

Ackermann, M.; Ajello, M.; Atwood, W. B.; ...

2012-04-09

The γ-ray sky >100 MeV is dominated by the diffuse emissions from interactions of cosmic rays with the interstellar gas and radiation fields of the Milky Way. Our observations of these diffuse emissions provide a tool to study cosmic-ray origin and propagation, and the interstellar medium. We present measurements from the first 21 months of the Fermi Large Area Telescope (Fermi-LAT) mission and compare with models of the diffuse γ-ray emission generated using the GALPROP code. The models are fitted to cosmic-ray data and incorporate astrophysical input for the distribution of cosmic-ray sources, interstellar gas, and radiation fields. In ordermore » to assess uncertainties associated with the astrophysical input, a grid of models is created by varying within observational limits the distribution of cosmic-ray sources, the size of the cosmic-ray confinement volume (halo), and the distribution of interstellar gas. An all-sky maximum-likelihood fit is used to determine the X CO factor, the ratio between integrated CO-line intensity and H2 column density, the fluxes and spectra of the γ-ray point sources from the first Fermi-LAT catalog, and the intensity and spectrum of the isotropic background including residual cosmic rays that were misclassified as γ-rays, all of which have some dependency on the assumed diffuse emission model. The models are compared on the basis of their maximum-likelihood ratios as well as spectra, longitude, and latitude profiles. Here, we provide residual maps for the data following subtraction of the diffuse emission models. The models are consistent with the data at high and intermediate latitudes but underpredict the data in the inner Galaxy for energies above a few GeV. Possible explanations for this discrepancy are discussed, including the contribution by undetected point-source populations and spectral variations of cosmic rays throughout the Galaxy. In the outer Galaxy, we find that the data prefer models with a flatter
FO Aqr time-series observations requested

NASA Astrophysics Data System (ADS)

Waagen, Elizabeth O.

2016-07-01

Dr. Colin Littlefield (University of Notre Dame) and colleagues Drs. Peter Garnavich (Notre Dame), Erin Aadland (Minnesota State), and Mark Kennedy (University College Cork) have requested AAVSO assistance in monitoring the intermediate polar cataclysmic variable FO Aqr beginning immediately. Littlefield, who with his colleagues recently published ATel #9216 and #9225, writes: "This system is in a faint state for the first time in its observational record, implying a dropoff in the mass-transfer rate. AAVSO observations contributed by Shawn Dvorak [the only observer following FO Aqr at the time] were particularly helpful in detecting this low state. Since early May, the system has recovered to V 15, but it is still well below its normal brightness. In addition, our time-series photometry shows a very strong 11.26-minute photometric period. By contrast, during its bright state, FO Aqr's light curve is dominated by a 20.9-minute period, corresponding with the spin period of the white dwarf. We interpret our observations as evidence that the system's accretion processes have changed dramatically as a result of the reduced mass-transfer rate. We have...determined that...[the 11.26-min] periodicity is dependent on the orbital phase of the binary. The 11.26-min period is dominant for about half of the orbit, but for the other half, a 22.5-min period is stronger. AAVSO observers can help us study both of these periods as well as their dependence on the orbital phase. We are particularly interested in any changes in this behavior as the system continues to brighten...Time-series photometry of FO Aqr [is requested] in order to better study the evolution of the 11.26-minute period as the system rebrightens. Unfiltered photometry reduced with a V zeropoint would be the most useful to us...A cadence of less than 60 seconds per image is important, given the brevity of these periods (especially the 11.26-min period). Finder charts with sequence may be created using the AAVSO
High-Resolution Spectroscopy of He{_2}^+ Using Rydberg-Series Extrapolation and Zeeman-Decelerated Supersonic Beams of Metastable He_2

NASA Astrophysics Data System (ADS)

Jansen, Paul; Semeria, Luca; Merkt, Frederic

2016-06-01

. Motsch, P. Jansen, J. A. Agner, H. Schmutz, and F. Merkt, Phys. Rev. A 89, 043420 (2014). C. Focsa, P. F. Bernath, and R. Colin, J. Mol. Spectrosc. 191, 209 (1998). P. Jansen, L. Semeria, and F. Merkt, J. Mol. Spectrosc. 322, 9 (2016)
Book review: Bird census techniques, Second edition

USGS Publications Warehouse

Sauer, John R.

2002-01-01

the relevance of survey design and methods and the often subtle interdisciplinary nature of surveys.Review info: Bird Census Techniques, Second Edition. By Colin J. Bibby, Neil D. Burgess, David A. Hill, and Simon H. Mustoe. 2000. Academic Press, London, UK. xvii 1 302 pp. ISBN 0- 12-095831-7.
The development of word recognition, sentence comprehension, word spelling, and vocabulary in children with deafness: a longitudinal study.

PubMed

Colin, S; Leybaert, J; Ecalle, J; Magnan, A

2013-05-01

Only a small number of longitudinal studies have been conducted to assess the literacy skills of children with hearing impairment. The results of these studies are inconsistent with regard to the importance of phonology in reading acquisition as is the case in studies with hearing children. Colin, Magnan, Ecalle, and Leybaert (2007) revealed the important role of early phonological skills and the contribution of the factor of age of exposure to Cued Speech (CS: a manual system intended to resolve the ambiguities inherent to speechreading) to subsequent reading acquisition (from kindergarten to first grade) in children with deafness. The aim of the present paper is twofold: (1) to confirm the role of early exposure to CS in the development of the linguistic skills necessary in order to learn reading and writing in second grade; (2) to reveal the possible existence of common factors other than CS that may influence literacy performances and explain the inter-individual difference within groups of children with hearing impairment. Eighteen 6-year-old hearing-impaired and 18 hearing children of the same chronological age were tested from kindergarten to second grade. The children with deafness had either been exposed to CS at an early age, at home and before kindergarten (early-CS group), or had first been exposed to it when they entered kindergarten (late-CS group) or first grade (beginner-CS group). Children were given implicit and explicit phonological tasks, silent reading tasks (word recognition and sentence comprehension), word spelling, and vocabulary tasks. Children in the early-CS group outperformed those of the late-CS and beginner-CS groups in phonological tasks from first grade to second grade. They became better readers and better spellers than those from the late-CS group and the beginner-CS group. Their performances did not differ from those of hearing children in any of the tasks except for the receptive vocabulary test. Thus early exposure to CS seems
6A.03: THE RELATIONSHIP BETWEEN INTER-ARM SYSTOLIC BLOOD PRESSURE AND CARDIOVASCULAR RISK FACTORS.

PubMed

Ma, W; Zhang, B; Yang, Y; Qi, L; Meng, L; Zhang, Y; Huo, Y

2015-06-01

To analyze the relationship between the inter arm blood pressure difference (IASBPD) and other cardiovascular risk factors. To identify what factors are associated with this difference in a general population. The study subjects were 1426 individuals. The BP was measured simultaneously in both arms by VP1000 vascular profiler (Omron Colin, Japan). The inter-arm BP difference was expressed as the absolute difference (|R - L|). The various risk factors, ba-PWV, carotid IMT and plaque were compared between IASBPD more than 10mmHg group and IASBPD less than 10mmHg group. The relationship between IASBPD more than 10mmHg and various cardiovascular risk factors were analyzed by multivariate logistic analysis. Left upper limb systolic blood pressure was higher than the right upper limb, while right upper limb diastolic pressure was higher than the left upper limb. The prevalence of hypertension was higher in IASBPD increasing group than normal group (40.5% vs 22.6%, p < 0.05). The weight, BMI, systolic and diastolic blood pressure were also higher in IASBPD increasing group(p < 0.05). The mean IMT and max IMT in any segment carotid artery except for mean IMT of internal carotid artery were thicker in IASBPD increasing group than normal group(p < 0.05). Ba-PWV was higher, while ABI was lower in IASBPD increasing group(1.04 ± 0.16 vs 1.09 ± 0.16, p < 0.05). By multivariate logistic regression analysis, after adjusting for age, sex, BMI, hypertension, diabetes, smoking, SBP, TC, TG, LDL-C,HDL-C,ABI, PWV, mean IMT and plaque, IASBPD more than 10mmHg was positive associated with BMI(OR 1.081 95%CI: 1.030,1.134,p = 0.002), SBP (OR 1.032 95%CI: 1.023,1.041,p < 0.001), and negative associated with ABI(OR 0.051 95%CI: 0.009,0.273,p = 0.001). The increasing IASBPD was associated with systolic blood pressure, BMI and ABI independently, which may partly explain the mechanism that increasing IASBPD is associated with cardiovascular disease.
Using the tabulated diffusion flamelet model ADF-PCM to simulate a lifted methane-air jet flame

DOE Office of Scientific and Technical Information (OSTI.GOV)

Michel, Jean-Baptiste; Colin, Olivier; Angelberger, Christian

2009-07-15

Two formulations of a turbulent combustion model based on the approximated diffusion flame presumed conditional moment (ADF-PCM) approach [J.-B. Michel, O. Colin, D. Veynante, Combust. Flame 152 (2008) 80-99] are presented. The aim is to describe autoignition and combustion in nonpremixed and partially premixed turbulent flames, while accounting for complex chemistry effects at a low computational cost. The starting point is the computation of approximate diffusion flames by solving the flamelet equation for the progress variable only, reading all chemical terms such as reaction rates or mass fractions from an FPI-type look-up table built from autoigniting PSR calculations using complexmore » chemistry. These flamelets are then used to generate a turbulent look-up table where mean values are estimated by integration over presumed probability density functions. Two different versions of ADF-PCM are presented, differing by the probability density functions used to describe the evolution of the stoichiometric scalar dissipation rate: a Dirac function centered on the mean value for the basic ADF-PCM formulation, and a lognormal function for the improved formulation referenced ADF-PCM{chi}. The turbulent look-up table is read in the CFD code in the same manner as for PCM models. The developed models have been implemented into the compressible RANS CFD code IFP-C3D and applied to the simulation of the Cabra et al. experiment of a lifted methane jet flame [R. Cabra, J. Chen, R. Dibble, A. Karpetis, R. Barlow, Combust. Flame 143 (2005) 491-506]. The ADF-PCM{chi} model accurately reproduces the experimental lift-off height, while it is underpredicted by the basic ADF-PCM model. The ADF-PCM{chi} model shows a very satisfactory reproduction of the experimental mean and fluctuating values of major species mass fractions and temperature, while ADF-PCM yields noticeable deviations. Finally, a comparison of the experimental conditional probability densities of the progress
Linking contemporary high resolution magnetic resonance imaging to the von Economo legacy: A study on the comparison of MRI cortical thickness and histological measurements of cortical structure.

PubMed

Scholtens, Lianne H; de Reus, Marcel A; van den Heuvel, Martijn P

2015-08-01

The cerebral cortex is a distinctive part of the mammalian nervous system, displaying a spatial variety in cyto-, chemico-, and myelinoarchitecture. As part of a rich history of histological findings, pioneering anatomists von Economo and Koskinas provided detailed mappings on the cellular structure of the human cortex, reporting on quantitative aspects of cytoarchitecture of cortical areas. Current day investigations into the structure of human cortex have embraced technological advances in Magnetic Resonance Imaging (MRI) to assess macroscale thickness and organization of the cortical mantle in vivo. However, direct comparisons between current day MRI estimates and the quantitative measurements of early anatomists have been limited. Here, we report on a simple, but nevertheless important cross-analysis between the histological reports of von Economo and Koskinas on variation in thickness of the cortical mantle and MRI derived measurements of cortical thickness. We translated the von Economo cortical atlas to a subdivision of the commonly used Desikan-Killiany atlas (as part of the FreeSurfer Software package and a commonly used parcellation atlas in studies examining MRI cortical thickness). Next, values of "width of the cortical mantle" as provided by the measurements of von Economo and Koskinas were correlated to cortical thickness measurements derived from high-resolution anatomical MRI T1 data of 200+ subjects of the Human Connectome Project (HCP). Cross-correlation revealed a significant association between group-averaged MRI measurements of cortical thickness and histological recordings (r = 0.54, P < 0.001). Further validating such a correlation, we manually segmented the von Economo parcellation atlas on the standardized Colin27 brain dataset and applied the obtained three-dimensional von Economo segmentation atlas to the T1 data of each of the HCP subjects. Highly consistent with our findings for the mapping to the Desikan-Killiany regions, cross
FERMI-LAT OBSERVATIONS OF THE DIFFUSE {gamma}-RAY EMISSION: IMPLICATIONS FOR COSMIC RAYS AND THE INTERSTELLAR MEDIUM

DOE Office of Scientific and Technical Information (OSTI.GOV)

Ackermann, M.; Ajello, M.; Bechtol, K.

The {gamma}-ray sky >100 MeV is dominated by the diffuse emissions from interactions of cosmic rays with the interstellar gas and radiation fields of the Milky Way. Observations of these diffuse emissions provide a tool to study cosmic-ray origin and propagation, and the interstellar medium. We present measurements from the first 21 months of the Fermi Large Area Telescope (Fermi-LAT) mission and compare with models of the diffuse {gamma}-ray emission generated using the GALPROP code. The models are fitted to cosmic-ray data and incorporate astrophysical input for the distribution of cosmic-ray sources, interstellar gas, and radiation fields. To assess uncertaintiesmore » associated with the astrophysical input, a grid of models is created by varying within observational limits the distribution of cosmic-ray sources, the size of the cosmic-ray confinement volume (halo), and the distribution of interstellar gas. An all-sky maximum-likelihood fit is used to determine the X{sub CO} factor, the ratio between integrated CO-line intensity and H{sub 2} column density, the fluxes and spectra of the {gamma}-ray point sources from the first Fermi-LAT catalog, and the intensity and spectrum of the isotropic background including residual cosmic rays that were misclassified as {gamma}-rays, all of which have some dependency on the assumed diffuse emission model. The models are compared on the basis of their maximum-likelihood ratios as well as spectra, longitude, and latitude profiles. We also provide residual maps for the data following subtraction of the diffuse emission models. The models are consistent with the data at high and intermediate latitudes but underpredict the data in the inner Galaxy for energies above a few GeV. Possible explanations for this discrepancy are discussed, including the contribution by undetected point-source populations and spectral variations of cosmic rays throughout the Galaxy. In the outer Galaxy, we find that the data prefer models with a
Fermi-LAT observations of the diffuse γ-ray emission: Implications for cosmic rays and the interstellar medium

DOE Office of Scientific and Technical Information (OSTI.GOV)

Ackermann, M.; Ajello, M.; Atwood, W. B.

The γ-ray sky >100 MeV is dominated by the diffuse emissions from interactions of cosmic rays with the interstellar gas and radiation fields of the Milky Way. Our observations of these diffuse emissions provide a tool to study cosmic-ray origin and propagation, and the interstellar medium. We present measurements from the first 21 months of the Fermi Large Area Telescope (Fermi-LAT) mission and compare with models of the diffuse γ-ray emission generated using the GALPROP code. The models are fitted to cosmic-ray data and incorporate astrophysical input for the distribution of cosmic-ray sources, interstellar gas, and radiation fields. In ordermore » to assess uncertainties associated with the astrophysical input, a grid of models is created by varying within observational limits the distribution of cosmic-ray sources, the size of the cosmic-ray confinement volume (halo), and the distribution of interstellar gas. An all-sky maximum-likelihood fit is used to determine the X CO factor, the ratio between integrated CO-line intensity and H2 column density, the fluxes and spectra of the γ-ray point sources from the first Fermi-LAT catalog, and the intensity and spectrum of the isotropic background including residual cosmic rays that were misclassified as γ-rays, all of which have some dependency on the assumed diffuse emission model. The models are compared on the basis of their maximum-likelihood ratios as well as spectra, longitude, and latitude profiles. Here, we provide residual maps for the data following subtraction of the diffuse emission models. The models are consistent with the data at high and intermediate latitudes but underpredict the data in the inner Galaxy for energies above a few GeV. Possible explanations for this discrepancy are discussed, including the contribution by undetected point-source populations and spectral variations of cosmic rays throughout the Galaxy. In the outer Galaxy, we find that the data prefer models with a flatter
Fermi-LAT Observations of the Diffuse γ-Ray Emission: Implications for Cosmic Rays and the Interstellar Medium

NASA Astrophysics Data System (ADS)

Ackermann, M.; Ajello, M.; Atwood, W. B.; Baldini, L.; Ballet, J.; Barbiellini, G.; Bastieri, D.; Bechtol, K.; Bellazzini, R.; Berenji, B.; Blandford, R. D.; Bloom, E. D.; Bonamente, E.; Borgland, A. W.; Brandt, T. J.; Bregeon, J.; Brigida, M.; Bruel, P.; Buehler, R.; Buson, S.; Caliandro, G. A.; Cameron, R. A.; Caraveo, P. A.; Cavazzuti, E.; Cecchi, C.; Charles, E.; Chekhtman, A.; Chiang, J.; Ciprini, S.; Claus, R.; Cohen-Tanugi, J.; Conrad, J.; Cutini, S.; de Angelis, A.; de Palma, F.; Dermer, C. D.; Digel, S. W.; Silva, E. do Couto e.; Drell, P. S.; Drlica-Wagner, A.; Falletti, L.; Favuzzi, C.; Fegan, S. J.; Ferrara, E. C.; Focke, W. B.; Fortin, P.; Fukazawa, Y.; Funk, S.; Fusco, P.; Gaggero, D.; Gargano, F.; Germani, S.; Giglietto, N.; Giordano, F.; Giroletti, M.; Glanzman, T.; Godfrey, G.; Grove, J. E.; Guiriec, S.; Gustafsson, M.; Hadasch, D.; Hanabata, Y.; Harding, A. K.; Hayashida, M.; Hays, E.; Horan, D.; Hou, X.; Hughes, R. E.; Jóhannesson, G.; Johnson, A. S.; Johnson, R. P.; Kamae, T.; Katagiri, H.; Kataoka, J.; Knödlseder, J.; Kuss, M.; Lande, J.; Latronico, L.; Lee, S.-H.; Lemoine-Goumard, M.; Longo, F.; Loparco, F.; Lott, B.; Lovellette, M. N.; Lubrano, P.; Mazziotta, M. N.; McEnery, J. E.; Michelson, P. F.; Mitthumsiri, W.; Mizuno, T.; Monte, C.; Monzani, M. E.; Morselli, A.; Moskalenko, I. V.; Murgia, S.; Naumann-Godo, M.; Norris, J. P.; Nuss, E.; Ohsugi, T.; Okumura, A.; Omodei, N.; Orlando, E.; Ormes, J. F.; Paneque, D.; Panetta, J. H.; Parent, D.; Pesce-Rollins, M.; Pierbattista, M.; Piron, F.; Pivato, G.; Porter, T. A.; Rainò, S.; Rando, R.; Razzano, M.; Razzaque, S.; Reimer, A.; Reimer, O.; Sadrozinski, H. F.-W.; Sgrò, C.; Siskind, E. J.; Spandre, G.; Spinelli, P.; Strong, A. W.; Suson, D. J.; Takahashi, H.; Tanaka, T.; Thayer, J. G.; Thayer, J. B.; Thompson, D. J.; Tibaldo, L.; Tinivella, M.; Torres, D. F.; Tosti, G.; Troja, E.; Usher, T. L.; Vandenbroucke, J.; Vasileiou, V.; Vianello, G.; Vitale, V.; Waite, A. P.; Wang, P.; Winer, B. L.; Wood, K. S.; Wood, M.; Yang, Z.; Ziegler, M.; Zimmer, S.

2012-05-01

The γ-ray sky >100 MeV is dominated by the diffuse emissions from interactions of cosmic rays with the interstellar gas and radiation fields of the Milky Way. Observations of these diffuse emissions provide a tool to study cosmic-ray origin and propagation, and the interstellar medium. We present measurements from the first 21 months of the Fermi Large Area Telescope (Fermi-LAT) mission and compare with models of the diffuse γ-ray emission generated using the GALPROP code. The models are fitted to cosmic-ray data and incorporate astrophysical input for the distribution of cosmic-ray sources, interstellar gas, and radiation fields. To assess uncertainties associated with the astrophysical input, a grid of models is created by varying within observational limits the distribution of cosmic-ray sources, the size of the cosmic-ray confinement volume (halo), and the distribution of interstellar gas. An all-sky maximum-likelihood fit is used to determine the X CO factor, the ratio between integrated CO-line intensity and H2 column density, the fluxes and spectra of the γ-ray point sources from the first Fermi-LAT catalog, and the intensity and spectrum of the isotropic background including residual cosmic rays that were misclassified as γ-rays, all of which have some dependency on the assumed diffuse emission model. The models are compared on the basis of their maximum-likelihood ratios as well as spectra, longitude, and latitude profiles. We also provide residual maps for the data following subtraction of the diffuse emission models. The models are consistent with the data at high and intermediate latitudes but underpredict the data in the inner Galaxy for energies above a few GeV. Possible explanations for this discrepancy are discussed, including the contribution by undetected point-source populations and spectral variations of cosmic rays throughout the Galaxy. In the outer Galaxy, we find that the data prefer models with a flatter distribution of cosmic
The New York Head—A precise standardized volume conductor model for EEG source localization and tES targeting

PubMed Central

Huang, Yu; Parra, Lucas C.; Haufe, Stefan

2018-01-01

In source localization of electroencephalograpic (EEG) signals, as well as in targeted transcranial electric current stimulation (tES), a volume conductor model is required to describe the flow of electric currents in the head. Boundary element models (BEM) can be readily computed to represent major tissue compartments, but cannot encode detailed anatomical information within compartments. Finite element models (FEM) can capture more tissue types and intricate anatomical structures, but with the higher precision also comes the need for semiautomated segmentation, and a higher computational cost. In either case, adjusting to the individual human anatomy requires costly magnetic resonance imaging (MRI), and thus head modeling is often based on the anatomy of an ‘arbitrary’ individual (e.g. Colin27). Additionally, existing reference models for the human head often do not include the cerebrospinal fluid (CSF), and their field of view excludes portions of the head and neck—two factors that demonstrably affect current-flow patterns. Here we present a highly detailed FEM, which we call ICBM-NY, or “New York Head”. It is based on the ICBM152 anatomical template (a non-linear average of the MRI of 152 adult human brains) defined in MNI coordinates, for which we extended the field of view to the neck and performed a detailed segmentation of six tissue types (scalp, skull, CSF, gray matter, white matter, air cavities) at 0.5 mm 3 resolution. The model was solved for 231 electrode locations. To evaluate its performance, additional FEMs and BEMs were constructed for four individual subjects. Each of the four individual FEMs (regarded as the ‘ground truth’) is compared to its BEM counterpart, the ICBM-NY, a BEM of the ICBM anatomy, an ‘individualized’ BEM of the ICBM anatomy warped to the individual head surface, and FEMs of the other individuals. Performance is measured in terms of EEG source localization and tES targeting errors. Results show that the ICBM
Plasma formation in water vapour layers in high conductivity liquids

NASA Astrophysics Data System (ADS)

Kelsey, C. P.; Schaper, L.; Stalder, K. R.; Graham, W. G.

2011-10-01

-voltage characteristics) they can be correlated with the spectra features. Initial measurements reveal two apparently different plasma formations. Stark broadening of the hydrogen Balmer beta line indicate electron densities of 3 to 5 ×1020 m-3 for plasmas produced early in the voltage pulse and an order of magnitude less for the later plasmas. Colin Kelsey is supported by a DEL NI PhD studentship.
The New York Head-A precise standardized volume conductor model for EEG source localization and tES targeting.

PubMed

Huang, Yu; Parra, Lucas C; Haufe, Stefan

2016-10-15

In source localization of electroencephalograpic (EEG) signals, as well as in targeted transcranial electric current stimulation (tES), a volume conductor model is required to describe the flow of electric currents in the head. Boundary element models (BEM) can be readily computed to represent major tissue compartments, but cannot encode detailed anatomical information within compartments. Finite element models (FEM) can capture more tissue types and intricate anatomical structures, but with the higher precision also comes the need for semi-automated segmentation, and a higher computational cost. In either case, adjusting to the individual human anatomy requires costly magnetic resonance imaging (MRI), and thus head modeling is often based on the anatomy of an 'arbitrary' individual (e.g. Colin27). Additionally, existing reference models for the human head often do not include the cerebro-spinal fluid (CSF), and their field of view excludes portions of the head and neck-two factors that demonstrably affect current-flow patterns. Here we present a highly detailed FEM, which we call ICBM-NY, or "New York Head". It is based on the ICBM152 anatomical template (a non-linear average of the MRI of 152 adult human brains) defined in MNI coordinates, for which we extended the field of view to the neck and performed a detailed segmentation of six tissue types (scalp, skull, CSF, gray matter, white matter, air cavities) at 0.5mm(3) resolution. The model was solved for 231 electrode locations. To evaluate its performance, additional FEMs and BEMs were constructed for four individual subjects. Each of the four individual FEMs (regarded as the 'ground truth') is compared to its BEM counterpart, the ICBM-NY, a BEM of the ICBM anatomy, an 'individualized' BEM of the ICBM anatomy warped to the individual head surface, and FEMs of the other individuals. Performance is measured in terms of EEG source localization and tES targeting errors. Results show that the ICBM-NY outperforms
Hydrogen Storage in metal-modified single-walled carbon nanotubes

DOE Office of Scientific and Technical Information (OSTI.GOV)

Dr. Ahn

2004-04-30

approximately proportional to the logarithm of the pressure. Using 300 K for room temperature, the 100 bar pressure requirement is reduced to exp(-900/300) 100 bar = 5 bar at room temperature. This is in the pressure range used for prior experimental work such as that of Colin and Herold in the late 1960's and early 1970's.« less

PREFACE: 1st European Conference on Gas Micro Flows (GasMems 2012)

NASA Astrophysics Data System (ADS)

Frijns, Arjan; Valougeorgis, Dimitris; Colin, Stéphane; Baldas, Lucien

2012-05-01

referees for their thorough reviews and evaluation of the full papers. Above all, we would like to sincerely thank all authors for their valuable contributions to these proceedings as well as all the participants for creating a stimulating atmosphere through their presentations and discussions and making this conference a great success. Dr Arjan Frijns Editor and Event Coordinator Prof. Dimitris Valougeorgis Local Organizer Prof. Stéphane Colin Network Coordinator Dr Lucien Baldas Assistant Network Coordinator The PDF also contains details of the Conference Organizers.
Spectroscopic Diagnosis of Excited-State Aromaticity: Capturing Electronic Structures and Conformations upon Aromaticity Reversal.

PubMed

Oh, Juwon; Sung, Young Mo; Hong, Yongseok; Kim, Dongho

2018-03-06

Aromaticity, the special energetic stability derived from cyclic [4 n + 2]π-conjugated electronic structures, has been the topic of intense interest in chemistry because it plays a critical role in rationalizing molecular stability, reactivity, and physical/chemical properties. Recently, the pioneering work by Colin Baird on aromaticity reversal, postulating that aromatic (antiaromatic) character in the ground state reverses to antiaromatic (aromatic) character in the lowest excited triplet state, has attracted much scientific attention. The completely reversed aromaticity in the excited state provides direct insight into understanding the photophysical/chemical properties of photoactive materials. In turn, the application of aromatic molecules to photoactive materials has led to numerous studies revealing this aromaticity reversal. However, most studies of excited-state aromaticity have been based on the theoretical point of view. The experimental evaluation of aromaticity in the excited state is still challenging and strenuous because the assessment of (anti)aromaticity with conventional magnetic, energetic, and geometric indices is difficult in the excited state, which practically restricts the extension and application of the concept of excited-state aromaticity. Time-resolved optical spectroscopies can provide a new and alternative avenue to evaluate excited-state aromaticity experimentally while observing changes in the molecular features in the excited states. Time-resolved optical spectroscopies take advantage of ultrafast laser pulses to achieve high time resolution, making them suitable for monitoring ultrafast changes in the excited states of molecular systems. This can provide valuable information for understanding the aromaticity reversal. This Account presents recent breakthroughs in the experimental assessment of excited-state aromaticity and the verification of aromaticity reversal with time-resolved optical spectroscopic measurements. To
Are you ready for Mars? - Main media events surrounding the arrival of ESA's Mars Express at Mars

NASA Astrophysics Data System (ADS)

2003-11-01

relating to the arrival of Mars Express at its destination will be marked by several media events not to be missed. Pencil them into your diaries so as not to miss one of the most exciting events of the year. Tuesday 11 November Mars Express/Beagle 2 Media briefing Royal Society- 6-9 Carlton House Terrace, London 10:00 - 13:00 -Status report on the mission -Technical details on forthcoming Mars Express/Beagle 2 operations -News handling arrangements around Christmas Speakers: Prof. David Southwood, ESA Director of Science; Prof. Colin Pillinger, Beagle 2 Lander Lead Scientist; John Reddy, ESA Mars Express Principal Electrical Systems Engineer. Contact: Peter Barratt, PPARC Tel. + 44 (0) 1793 44 20 25 e-mail: Beagle2@pparc.ac.uk Wednesday 3 December ESA Media briefing ESA/ ESOC, Darmstadt, Germany 10:30 - 12:30 -Scientific outlook and expected results -Status report on the mission -Presentation of upcoming events Speakers: Rudolf Schmidt, ESA Mars Express Project Manager; Augustin Chicarro, ESA Mars Express Project Scientist. In addition, Mars Express scientists and Mission Control Managers will highlight their contribution to the Mars Express mission. In videoconference with ESA/Headquarters, Paris (F); ESA/ESTEC, Noordwijk (NL), ESA/ESRIN, Frascati (I). Contact: Jocelyne Landeau Constantin, ESA/ESOC Tel. + 49 6151 90 26 96 e-mail: Jocelyne.Landeau-Constantin@esa.int Friday 19 December Mars Express Orbiter/ Beagle 2 separation Mission Control Managers announce results of Beagle 2 separation from the mother craft. a.Event at ESA/ESOC, Darmstadt , Germany 08:30 - 14:00 Speakers: Prof. David Southwood, ESA Director of Science; Rudolf Schmidt, ESA Mars Express Project Manager Contact: Jocelyne Landeau Constantin, ESA/ESOC Tel. + 49 6151 90 26 96 e-mail: Jocelyne.Landeau-Constantin@esa.int b.Event in London -location and time t.b.c. Speaker: Prof. Colin Pillinger, Beagle 2 Lander Lead Scientist. Contact: Peter Barratt, PPARC Tel. + 44 (0) 1793 44 20 25 e-mail: Beagle2@pparc
Right- and left-brain hemisphere. Rhythm in reaction time to light signals is task-load-dependent: age, gender, and handgrip strength rhythm comparisons.

PubMed

Reinberg, Alain; Bicakova-Rocher, Alena; Mechkouri, Mohamed; Ashkenazi, Israel

2002-11-01

In healthy mature subjects simple reaction time (SRT) to a single light signal (an easy task) is associated with a prominent rhythm with tau = 24 h of dominant (DH) as well as nondominant (NDH) hand performance, while three-choice reaction time (CRT), a complex task, is associated with tau = 24 h of the DH but tau < 24 h of the NDH. The aims of the study were to assess the influence of age and gender on the difference in tau of the NDH and DH, as it relates to the corresponding cortical hemisphere of the brain, in comparison to the rhythm in handgrip strength. Healthy subjects, 9 (5 M and 4 F) adolescents 10-16 yr of age and 15 (8 M and 7 F) adults 18-67 yr of age, active between 08:00 +/- 1 h and 23:00 +/- 1:30 h and free of alcohol, tobacco, and drug consumption volunteered. Data were gathered longitudinally at home and work 4-7 times daily for 11-20 d. At each test time the following variables were assessed: grip strength of both hands (Dynamometer: Colin-Gentile, Paris, France); single reaction time to a yellow signal (SRT); and CRT to randomized yellow, red, or green signal series with varying instruction from test to test (Psycholog-24: Biophyderm, France). Rhythms in the performance in SRT, CRT, and handgrip strength of both DH and NDH were explored. The sleep-wake rhythm was assessed by sleep-logs, and in a subset of 14 subjects it was also assessed by wrist actigraphy (Mini-Motionlogger: AMI, Ardsley NY). Exploration of the prominent period tau of time series was achieved by a special power spectra analysis for unequally spaced data. Cosinor analysis was used to quantify the rhythm amplitude A and rhythm-adjusted mean M of the power spectral analysis determined trial tau. A 24h sleep-wake rhythm was detected in almost all cases. In adults, a prominent tau of 24 h characterized the performance of the easy task by both the DH and NDH. In adults a prominent tau of 24 h was also detected in the complex CRT task performed by the DH, but for the NDH the tau was
21,000 years of Ethiopian African monsoon variability recorded in sediments of the western Nile deep-sea fan: impact of the Nile freshwater inflow for the Mediterranean thermo-haline circulation

NASA Astrophysics Data System (ADS)

Revel, Marie; Colin, Christophe; Bernasconi, Stephano; Combourieu-Nebout, Nathalie; Ducassou, Emmanuelle; Rolland, Yann; Bosch, Delphine

2014-05-01

response to huge volumes of fresh-water delivered principally by the Nile River from 12 to 8.4 cal. ka BP in the eastern Mediterranean. We propose that the large hydrological change in Ethiopian latitude could be a trigger for the 8.2 ka cooling event recorded in high latitude. Revel R., Colin C., Bernasconi S., Combourieu-Nebout N., Ducassou E., Grousset F.E., Rolland Y., Migeon S., Brunet P., Zhaa Y., Bosch D., Mascle J.,. "21,000 years of Ethiopian African moonsoon variability recorded in sediments of the western Nile deep sea fan", Regional Environmental Change, in press.
The Effectiveness of Text Messaging for Detection and Management of Hypertension in Indigenous People in Canada: Protocol for a Randomized Controlled Trial.

PubMed

Yeates, Karen; Campbell, Norm; Maar, Marion A; Perkins, Nancy; Liu, Peter; Sleeth, Jessica; Smith, Carter; McAllister, Colin; Hua-Stewart, Diane; Wells, George; Tobe, Sheldon W

2017-12-19

will include analysis by community, sex, mobile phone ownership at baseline, and age. The knowledge gained from the text messages will be assessed using a questionnaire at study completion, and results will be compared between the groups. This study is expected to provide insights into the implementation of an innovative system of guidelines- and community-based treatment and follow-up for hypertension in Indigenous communities in Canada and in Tanzania, an example of an LMIC. These insights are expected to provide the information needed to plan scalable and sustainable interventions to control BP virtually anywhere in the world. Clinicaltrials.gov NCT02111226; https://clinicaltrials.gov/ct2/show/NCT02111226 (Archived by WebCite at http://www.webcitation.org/6v7IdYzZh). ©Karen Yeates, Norm Campbell, Marion A Maar, Nancy Perkins, Peter Liu, Jessica Sleeth, Carter Smith, Colin McAllister, Diane Hua-Stewart, George Wells, Sheldon W Tobe. Originally published in JMIR Research Protocols (http://www.researchprotocols.org), 19.12.2017.
The Virtual Care Climate Questionnaire: Development and Validation of a Questionnaire Measuring Perceived Support for Autonomy in a Virtual Care Setting.

PubMed

Smit, Eline Suzanne; Dima, Alexandra Lelia; Immerzeel, Stephanie Annette Maria; van den Putte, Bas; Williams, Geoffrey Colin

2017-05-08

autonomy-support offered by two Web-based health behavior change interventions. Overall, the scale showed the expected properties and relationships with relevant concepts, and the studies presented suggest this first version of the virtual climate care questionnaire to be reasonably valid and reliable. As a result, the current version may cautiously be used in future research and practice to measure perceived support for autonomy within a virtual care climate. Future research efforts are required that focus on further investigating the virtual climate care questionnaire's divergent validity, on determining the virtual climate care questionnaire's validity and reliability when used in the context of Web-based interventions aimed at improving nonaddictive or other health behaviors, and on developing and validating a short form virtual climate care questionnaire. ©Eline Suzanne Smit, Alexandra Lelia Dima, Stephanie Annette Maria Immerzeel, Bas van den Putte, Geoffrey Colin Williams. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 08.05.2017.
Quantum Field Theory in Curved Spacetime

NASA Astrophysics Data System (ADS)

Reynolds, Sally C.; Gallagher, Andrew

2012-03-01

List of contributors; Foreword J. T. Francis Thackeray; 1. African genesis: an evolving paradigm Sally C. Reynolds; 2. Academic genealogy Peter Ungar and Phillip V. Tobias; Part I. In Search of Origins: Evolutionary Theory, New Species, and Paths into the Past: 3. Speciation in hominin evolution Colin Groves; 4. Searching for a new paradigm for hominid origins in Chad (Central Africa) Michel Brunet; 5. From hominoid arboreality to hominid bipedalism Brigitte Senut; 6. Orrorin and the African ape/hominid dichotomy Martin Pickford; 7. A brief history and results of 40 years of Sterkfontein excavations Ronald J. Clarke; Part II. Hominin Morphology Through Time: Brains, Bodies and Teeth: 8. Hominin brain evolution, 1925-2011: an emerging overview Dean Falk; 9. The issue of brain reorganisation in Australopithecus and early hominids: Dart had it right Ralph L. Holloway; 10. The mass of the human brain: is it a spandrel? Paul R. Manger, Jason Hemingway, Muhammad Spocter and Andrew Gallagher; 11. Origin and diversity of early hominin bipedalism Henry M. McHenry; 12. Forelimb adaptations in Australopithecus afarensis Michelle S. M. Drapeau; 13. Hominin proximal femur morphology from the Tugen Hills to Flores Brian G. Richmond and William L. Jungers; 14. Daily rates of dentine formation and root extension rates in Paranthropus boisei, KNM-ER 1817, from Koobi Fora, Kenya M. Christopher Dean; 15. On the evolutionary development of early hominid molar teeth and the Gondolin Paranthropus molar Kevin L. Kuykendall; 16. Digital South African fossils: morphological studies using reference-based reconstruction and electronic preparation Gerhard W. Weber, Philipp Gunz, Simon Neubauer, Philipp Mitteroecker and Fred L. Bookstein; Part III. Modern Human Origins: Patterns, and Processes: 17. Body size in African Middle Pleistocene Homo Steven E. Churchill, Lee R. Berger, Adam Hartstone-Rose and Headman Zondo; 18. The African origin of recent humanity Milford H. Wolpoff and Sang-Hee Lee
Solitary water wave interactions

NASA Astrophysics Data System (ADS)

Craig, W.; Guyenne, P.; Hammack, J.; Henderson, D.; Sulem, C.

2006-05-01

-soliton solutions defined in Lax [Commun. Pure Appl. Math. 21, 467 (1968)], with, however, a modification in the parameter regime. In all cases we have considered, collisions are seen to be inelastic, although the degree to which interactions depart from elastic is very small. Finally, we give several theoretical results: (i) a relationship between the change in amplitude of solitary waves due to a pairwise collision and the energy carried away from the interaction by the residual component, and (ii) a rigorous estimate of the size of the residual component of pairwise solitary wave collisions. This estimate is consistent with the analytic results of Schneider and Wayne [Commun. Pure Appl. Math. 53, 1475 (2000)], Wright [SIAM J. Math. Anal. 37, 1161 (2005)], and Bona, Colin, and Lannes [Arch. Rat. Mech. Anal. 178, 373 (2005)]. However, in light of our numerical data, both (i) and (ii) indicate a need to reevaluate the asymptotic results in Su and Mirie [J. Fluid Mech. 98, 509 (1980)] and Zou and Su [Phys. Fluids 29, 2113 (1986)].
Seeing Stars - Intensity Interferometry in the Laboratory & on the Ground

NASA Astrophysics Data System (ADS)

Carlile, Colin; Dravins, Dainis

2018-04-01

has been sent to CTA expressing these intentions. An attractive aspect of II is its complementarity to the principle goal of CTA - the exploration of high energy cosmic rays via the Cherenkov light they generate in the atmosphere. This can only be observed under the most demanding atmospheric conditions whereas II can be recorded when conditions are poor: with a bright Moon, during periods of turbulence; in hazy conditions; or after dusk and before dawn. Two further advantages of implementing an II option on CTA are the minimal marginal costs incurred to an already 400M€ investment and, secondly, that even a few telescopes would produce unique scientific results even in the early days when the CTA array is far from complete. [1] Dainis Dravins and Colin Carlile, SPIE Newsroom (2016), http://spie.org/newsroom/6504-kilometer-baseline-optical-intensity-interferometry-for-stellar-surface-observations [2] D. Dravins, T. Lagadec, P.D. Nuñez, Nature Communications 6, 6852 (2015)
Setting the Stage for Science in Schools - EIROforum presents the very best of European science teaching

NASA Astrophysics Data System (ADS)

2005-11-01

EIROforum presents the very best of European science teaching How can you weigh the Earth with a straw, a paperclip and a piece of thread? Why don't we really know what we see? How can a juggling act explain mathematics? These are but a few of the on-stage activities that will be shown at the EIROforum [1] Science on Stage Festival, to be held from 21 to 25 November at CERN in Geneva (Switzerland). With support from the European Commission, this international festival brings together around 500 science educators from 29 European countries to show how fascinating and entertaining science can be. "Science is fun! This is what this week-long event will show by presenting innovative methods of teaching science and demonstrations", says Helen Wilson from the European Space Agency and co-ordinator of the event. "At the festival, teachers have the chance to view things from a new perspective, to be entertained and enchanted by science", says Rolf Landua, Head of Education at CERN and Chairman of the event. "As well as taking to the stage, they set up stalls in fair-like surroundings to share their most successful teaching tricks." Workshops on themes as varied as "flying on stage", "the theatre of science", or "stem cell research" and "gamma-ray bursts", will give the attendees - teachers and other science educators - the chance to discuss and come up with solutions to the problem of growing disinterest for science in Europe. "A key element of the Science on Stage concept is to give teachers an up-to-date 'insider's view' of what is happening in big science, to tell them about new, highly diverse and interesting career opportunities for their pupils, and to create a European atmosphere where bright young people can meet and interact", says Colin Carlile, Director General of the Institut Laue-Langevin and current chairman of the EIROforum. At the end of the festival, the European Science Teaching Awards will be presented. The names of the winners will be made public on the
Accidental Predissociation: A Special Case of Photo-Induced Isotope Fractionation Effect and Possible Occurrence in Nature

NASA Astrophysics Data System (ADS)

Chakraborty, S.; Thiemens, M. H.

2009-12-01

light of these data, anomalous isotopic fractionations associated with accidental predissociation will be discussed for the CO and N2. These fractionations are important as VUV-photodissociation of CO and N2 have been invoked in solar nebula (self-shielding, (9-10)) to explain the observed iso-topic signatures in different solar system objects neglecting these isotope effects during photo-dissociation. References: 1. Y. L. Yung, C. E. Miller, Science 278, 1778 (1997). 2. S. Chakraborty, S. K. Bhattacharya, J. Chem. Phys. 118, 2164 (2003). 3. H. Lefebvre-Brion, R. W. Field, The Spectra and Dynamics of Diatomic Molecules. (Elsevier Academic Press, 2004). 4. A. J. Lorquet, J. C. Lorquet, Chem. Phys. Lett. 26, 138 (1974). 5. W. Ubachs, I. Velchev, P. Cacciani, J. Chem. Phys. 113, 547 (2000). 6. H. Lefebvre-Brion, R. Colin, J. Mol. Spectrosc. 65, 33 (1977). 7. S. Chakraborty, M. Ahmed, T. L. Jackson, M. H. Thiemens, Science 321, 1328 (2008). 8. S. Chakraborty, M. Ahmed, T. L. Jackson, M. H. Thiemens, Science 324, 4 (2009). 9. R. N. Clayton, Nature 415, 860 (2002). 10. J. R. Lyons, E. D. Young, Nature 435, 317 (2005).
Finding better solutions to end bullying: what an organizalion can do .

PubMed

Farrell, Marinah Valenzuela

2007-01-01

In order to stop bullying we must recognize and assess the problem, discuss it, educate and train employees, and create zero tolerance policies and formal/informal complaint processes, ensuring that they are fair and safe for the person making a complaint. This series of articles has touched on the very real issue of bullying in our workplaces and among our professional peers in midwifery. My personal goal for this series was to find the essence of the lesson in bullying and how it can become a positive subject. Once it has been "named" and discussed and organizations try to change the tide and individuals find their strength to confront abuse, the transformations in the organizations and the individual can be earth healing. Colin C. Tipping, the author of Radical Forgiveness, writes, "The extent to which we respond to other people's actions with a sense of righteous indignation, grievance, revenge and resentment, rather than with a genuine desire to balance the scales with regard to principles of fairness, freedom and respect for others, determines our level of forgiveness. Righteousness and revenge lower our vibration. Conversely, defense of principles and acting with integrity raises our vibration... we should seek to make others accountable for their actions... I am often asked whether, in a situation where someone has done us harm and where the normal reaction would be to seek redress through the courts, a forgiving person would actually take that course of action? The answer is, "Yes". Early on we learn that our actions have consequences... When I do intervene however, I do it free of judgment and the need to blame anyone. I just do it, knowing that the Universe set the whole thing up for a reason and that there is a perfection in there somewhere... we do not have to like the person to forgive them. Neither do we have to stay in their company if their personality and/or behavior is toxic to us". This can be a plausible answer to a positive, peaceful and
Rings Research in the Next Decade

NASA Astrophysics Data System (ADS)

Burns, J. A.; Tiscareno, M. S.

2009-12-01

-based observations. Members of the Rings White Paper Team include: Matthew S. Tiscareno (Cornell U), Nicole Albers (U of Colorado), Todd Bradley (U of Central Florida), André Brahic (U of Paris, France), Shawn Brooks (JPL), Joseph Burns (Cornell U), Carlos Chavez (UNAM, Mexico), Joshua Colwell (U of Central Florida), Jeff Cuzzi (NASA Ames), Imke de Pater (U of California), Luke Dones (SwRI), Richard Durisen (Indiana U), Michael Evans (Cornell U), Cecile Ferrari (CEA Saclay, France), Gianrico Filacchione (INAF-IASF, Italy), Silvia Giuliatti Winter (UNESP, Brazil), Mitch Gordon (SETI), Amara Graps (SwRI), Eberhard Gruen (MPI, Germany), Douglas Hamilton (U of Maryland), Matthew Hedman (Cornell U), Mihaly Horanyi (U of Colorado), Sascha Kempf (MPI, Germany), Harald Krueger (MPI, Germany), Steve Larson (U of Arizona), Mark Lewis (Trinity U), Jack Lissauer (NASA Ames), Colin Mitchell (CICLOPS/SSI), Carl Murray (QMUL, England), Philip Nicholson (Cornell U), Cathy Olkin (SwRI), Robert Pappalardo (JPL), Frank Postberg (MPI, Germany), Heikki Salo (U of Oulu, Finland), Juergen Schmidt (U of Potsdam, Germany), David Seal (JPL), Mark Showalter (SETI), Frank Spahn (U of Potsdam, Germany), Linda Spilker (JPL), Joseph Spitale (CICLOPS/SSI), Ralf Srama (MPI, Germany), Miodrag Sremcevic (U of Colorado), Glen Stewart (U of Colorado), John Weiss (Carleton College), Padma Yanamandra-Fisher (JPL)
Euromet-A Programme for the Collection of New Extraterrestrial Samples: Progress, Plans, or Pipe-Dreams?

NASA Astrophysics Data System (ADS)

Pillinger, C. T.

1992-07-01

in 1995/96. EUROMET forsees an immense potential for expansion in hot deserts with programmes that will be carried out together with organisations and governments in the host countries. We are exploring ways to continue the highly successful collaboration with WAMET and possibly to escalate the effort. One of the areas we would like to consider is North Africa but the political situation in several countries in this region is presently unpredictable. Much more productive have been representations we have made to various Middle Eastern states, so that an expedition to Jiddat al Harasis in Oman seems now almost certain later this year. Contacts made between EUROMET and the Namibian Geological Survey suggest we would be welcome in Namibia, but an agreement on how any samples collected would be shared has to be reached. A reconnaissance to the Atacama (see abstract by Delisle et al., this volume) proved unproductive except for the official contacts made with sympathetic Chilean scientists. Much more speculative have been contacts with Russian and Chinese researchers in sympathy with EUROMET's aims. Although the above is a very extensive portfolio, we as much as anything are endeavouring to encourage countries without a current interest in meteorites to exploit their own meteorite heritage before samples are lost through unofficial or badly conducted efforts. We hope to provide opportunities for a number of volunteers to participate in the field programmes. *Footnote: The EUROMET Council: Colin Pillinger, Ludolf Schultz, Michel Maurette, and Marcello Mellini.
Introducing litter quality to the ecosystem model LPJ-GUESS: Effects on short- and long-term soil carbon dynamics

NASA Astrophysics Data System (ADS)

Portner, Hanspeter; Wolf, Annett; Rühr, Nadine; Bugmann, Harald

2010-05-01

and 2007 [Rühr(2009)] and present soil carbon stocks [Heim et al.(2009)]. Our Results show, that for short-term soil carbon dynamics, e.g. estimates of heterotrophic soil respiration on an annual basis, the inclusion of the dependency on litter quality is not necessary, as the differences are minor only. However, when considering long-term soil carbon dynamics, e.g. simulated estimates of present soil carbon content, the dependency on litter quality shows effect, as there are correlations with specific site factors such as site location and forest type. The inclusion of the dependence on litter quality therefore may be of importance for the projection of future soil carbon dynamics, as forest types may well be altered due to climatic change. References [Heim et al.(2009)] A. Heim, L. Wehrli, W. Eugster, and M.W.I. Schmidt. Effects of sampling design on the probability to detect soil carbon stock changes at the swiss CarboEurope site Lägeren. Geoderma, 149(3-4):347-354, 2009. [Rühr(2009)] Nadine Katrin Rühr. Soil respiration in a mixed mountain forest : environmental drivers and partitioning of component fluxes. PhD thesis, ETH, 2009. [Smith et al.(2001)] Benjamin Smith, I. Colin Prentice, and Martin T. Sykes. Representation of vegetation dynamics in the modelling of terrestrial ecosystems: comparing two contrasting approaches within european climate space. Global Ecology and Biogeography, 10(6):621-637, 2001. [Tuomi et al.(2008)] Mikko Tuomi, Pekka Vanhala, Kristiina Karhu, Hannu Fritze, and Jari Liski. Heterotrophic soil respiration-Comparison of different models describing its temperature dependence. Ecological Modelling, 211(1-2): 182-190, 2008.
Einstein@Home Finds an Elusive Pulsar

NASA Astrophysics Data System (ADS)

Kohler, Susanna

2015-08-01

Since the release of the second Fermi-LAT catalog in 2012, astronomers have been hunting for 3FGL J1906.6+0720, a gamma-ray source whose association couldn't be identified. Now, personal-computer time volunteered through the Einstein@Home project has resulted in the discovery of a pulsar that has been hiding from observers for years. A Blind Search: Identifying sources detected by Fermi-LAT can be tricky: the instrument's sky resolution is limited, so the position of the source can be hard to pinpoint. The gamma-ray source 3FGL J1906.6+0720 appeared in both the second and third Fermi-LAT source catalogs, but even after years of searching, no associated radio or X-ray source had been found. A team of researchers, led by Colin Clark of the Max Planck Institute for Gravitational Physics, suspected that the source might be a gamma-ray pulsar. To confirm this, however, they needed to detect pulsed emission — something inherently difficult given the low photon count and the uncertain position of the source. The team conducted a blind search for pulsations coming from the general direction of the gamma-ray source. Two things were needed for this search: clever data analysis and a lot of computing power. The data analysis algorithm was designed to be adaptive: it searched a 4-dimensional parameter space that included a safety margin, allowing the algorithm to wander if the source was at the edge of the parameter space. The computing power was contributed by tens of thousands of personal computers volunteered by participants in the Einstein@Home project, making much shorter work out of a search that would have required dozens of years on a single laptop. The sky region around the newly discovered pulsar. The dotted ellipse shows the 3FGL catalog 95% confidence region for the source. The data analysis algorithm was designed to search an area 50% larger (given by the dashed ellipse), but it was allowed to “walk away” within the gray shaded region if the source seemed to
Deepest X-Rays Ever Reveal universe Teeming With Black Holes

NASA Astrophysics Data System (ADS)

2001-03-01

-ray wavelengths. Both Chandra Deep Fields are comparable in observation time to the Hubble Deep Fields, but cover a much larger area of the sky. "In essence, it is like seeing galaxies similar to our own Milky Way at much earlier times in their lives," Hornschemeier added. "These data will help scientists better understand star formation and how stellar-sized black holes evolve." Combining infrared and X-ray observations, the Penn State team also found veils of dust and gas are common around young black holes. Another discovery to emerge from the Chandra Deep Field South is the detection of an extremely distant X-ray quasar, shrouded in gas and dust. "The discovery of this object, some 12 billion light years away, is key to understanding how dense clouds of gas form galaxies, with massive black holes at their centers," said Colin Norman of Johns Hopkins University. The Chandra Deep Field South results were complemented by the extensive use of deep optical observations supplied by the Very Large Telescope of the European Southern Observatory in Garching, Germany. The Penn State team obtained optical spectroscopy and imaging using the Hobby-Eberly Telescope in Ft. Davis, TX, and the Keck Observatory atop Mauna Kea, HI. Chandra's Advanced CCD Imaging Spectrometer was developed for NASA by Penn State and Massachusetts Institute of Technology under the leadership of Penn State Professor Gordon Garmire. NASA's Marshall Space Flight Center, Huntsville, AL, manages the Chandra program for the Office of Space Science, Washington, DC. TRW, Inc., Redondo Beach, California, is the prime contractor for the spacecraft. The Smithsonian's Chandra X-ray Center controls science and flight operations from Cambridge, MA. More information is available on the Internet at: http://chandra.harvard.edu AND http://chandra.nasa.gov
EDITORIAL: Materially speaking!

NASA Astrophysics Data System (ADS)

Cornwall, Malcolm G.

1997-05-01

areas of physics-based science and technology. Can materials science be made intellectually more exciting and mind-stretching for our students? In this special issue we present several articles by researchers in less-than-familiar but important areas of materials science and technology. Following a review by Mathew Philip of some of the basic atomic theory which underlies materials science, Jose Silva looks at how artificial diamonds can be made and at how we can apply this exotic material (other than on fingers and around necks). Alan Piercy reviews the field of giant magnetostrictive materials, which, when magnetized, change dimensions hundreds or even thousands of times more than traditional ferromagnetics. David Pettifor provides a nicely interdisciplinary overview of how computer simulations, from the subatomic to the macroscopic level, can be used to help in the design of new materials for such things as turbine blades. Adrian Rennie offers a much-requested written version of the entertaining 1995/6 IOP Schools Lecture on the physics of polymers. (We had hoped to include an article by Professor Colin Gough of Birmingham University on High Temperatue Superconductors, but for technical reasons this has had to be postponed until a future issue.) Finally, there are two articles describing an initiative which will have a direct practical impact on the teaching and learning of `Materials' in the UK. Karen Davies describes the exciting new Materials Gallery due to be opened at the Science Museum as this issue goes to press in May 1997 (no coincidence!), and David Sang provides details of how the new gallery has been linked directly with the GNVQ curriculum, and can certainly be exploited more widely in our physics and technology teaching. Perhaps this can help provide the missing 'zing' that materials science at present seems to lack.
PREFACE: 17th International Conference on Microscopy of Semiconducting Materials 2011

NASA Astrophysics Data System (ADS)

Walther, T.; Midgley, P. A.

2011-11-01

This volume contains invited and contributed papers from the 17th international conference on 'Microscopy of Semiconducting Materials' held at Churchill College, University of Cambridge, on 4-7 April 2011. The meeting was organised under the auspices of the Institute of Physics and supported by the Royal Microscopical Society as well as the Materials Research Society of the USA. This conference series deals with recent advances in semiconductor studies carried out by all forms of microscopy, with an emphasis on electron microscopy and related techniques with high spatial resolution. This time the meeting was attended by 131 delegates from 25 countries world-wide, a record in terms of internationality. As semiconductor devices shrink further new routes of device processing and characterisation need to be developed, and, for the latter, methods that offer sub-nanometre spatial resolution are particularly valuable. The various forms of imaging, diffraction and spectroscopy available in modern microscopes are powerful tools for studying the microstructure, the electronic structure, the chemistry and also electric fields in semiconducting materials. Recent advances in instrumentation, from lens aberration correction in both TEM and STEM instruments, to the development of a wide range of scanning probe techniques, as well as new methods of signal quantification have been presented at this conference. Two examples of topics at this meeting that have attracted a number of interesting studies were: the correlation of microstructural, optical and chemical information at atomic resolution with nanometre-scale resolved maps of the local electrical fields in (In,Al)GaN based semiconductors and tomographic approaches to characterise ensembles of nanowires and stacks of processed layers in devices Figure 1 Figure 1. Opening lecture by Professor Sir Colin J Humphreys. Each manuscript submitted for publication in this proceedings volume has been independently reviewed and revised

PREFACE: Preface

NASA Astrophysics Data System (ADS)

2011-10-01

The bi-annual Meeting of the Spanish Neutron Scattering Association, V RSETN, took place in Gijón (Asturias), Spain, from 28-30 June 2010, at the Hotel Silken 'Ciudad Gijón', close to the beautiful Cantabric seashore. It was the fifth in a series of successful scientific meetings, beginning in 2002 (Donostia - San Sebastián), and followed by conferences in: Puerto de la Cruz (Canary Islands, 2004), Jaca (Pyrenees, 2006) and Sant Feliú de Guixols (Costa Brava, 2008). Vicente Gotor, Rector of the University of Oviedo and Paz Fernández Felgueroso, Mayor of the city of Gijón chaired the opening ceremony. The conference covered a broad range of topics related to the use of neutron scattering techniques, from soft matter and biosciences to magnetism, condensed matter and materials applications. In addition to those topics, Spanish scientists working at neutron facilities talked about the recent upgrades of the neutron instruments. Colin Carlile (ESS, Lund), F J Bermejo (ESS, Bilbao) and Michael Steiner (Chairman of the European Neutron Scattering Association, ENSA) gave their personal views concerning the present and future perspectives of neutron scattering in Europe. They reviewed the situation of the running and new neutron facilities (European Spalation Source, ESS), the increase in the number of users and the spread of the scientific topics in which neutron scattering is used or where the impact of ESS will be most significant. Wonderful Plenary talks by Albert Furrer, Juan Manuel Pérez-Mato and José Antonio Alonso opened the scientific sessions of this three-day meeting. The V RSETN was organized by the Department of Physics of The University of Oviedo in cooperation with the Spanish Society for Neutron Techniques (SETN, 'Sociedad Española de Técnicas Neutrónicas'). The meeting attracted around 80 participants, including 13 invited talks, 23 oral presentations and more than 30 posters, both domestic and from abroad. The three best oral presentations by
A new Geo-Information Architecture for Risk Management in the Alps

NASA Astrophysics Data System (ADS)

Baruffini, Mi.; Thuering, M.

2009-04-01

gravitativen Naturgefahren - Methode, Fallbeispiele und Daten (Risk analyses for gravitational natural hazards). Bundesamt für Umwelt, Wald und Landschaft (BUWAL). Umwelt-Materialen Nr. 107, 1-244. Loat, R. & Zimmermann, M. 2004 : La gestion des risques en Suisse (Risk Management in Switzerland). In: Veyret, Y., Garry, G., Meschinet de Richemont, N. & Armand Colin (eds) 2002: Colloque Arche de la Défense 22-24 octobre 2002, dans Risques naturels et aménagement en Europe, 108-120. Smith, K. 2001: Environmental hazards. Assessing the risk and reducing disaster. Third edition. London
PREFACE: EmQM13: Emergent Quantum Mechanics 2013

NASA Astrophysics Data System (ADS)

2014-04-01

these proceedings represent the talks of the invited speakers as written immediately after the symposium. The volume starts with a contribution by organizers Jan Walleczek and Gerhard Grössing, essentially explaining why emergent quantum mechanics, and other deterministic approaches to quantum theory, must be considered viable approaches in quantum foundations today. This is followed by the exposition of Stephen Adler's talk who introduced to a general audience key questions at the current frontiers of quantum mechanics during the opening evening (with the contents of his conference talk appearing elsewhere). The conference proceedings then continues with the presentations as given in their chronological order i.e. starting with the opening talk of the scientific program by Gerard 't Hooft. While the page number was restricted for all invited speakers, the paper by Jeff Tollaksen was given more space, as his invited collaborator Yakir Aharonov was unable to deliver a separate talk, in order to represent both contributions in one paper. Note that the talks of all speakers, including the talks of those who could not be represented in this volume (M. Arndt, B. Braverman, C. Brukner, S. Colin, Y. Couder, B. Poirier, A. Steinberg, G. Weihs and H. Wiseman) are freely available on the conference website as video presentations (http://www.emqm13.org). The organizers wish to express their gratitude to Siegfried Fussy and Herbert Schwabl from AINS for the organizational support. The organizers also wish to thank Bruce Fetzer, President and CEO, John E. Fetzer Memorial Trust, and the Members of the Board of Trustees, for their strong support and for funding this symposium. We also wish to thank the Austrian Academy of Sciences for allowing the symposium to be held on their premises, and Anton Zeilinger, President of the Austrian Academy of Sciences, for his welcome address. The expertise of the Members of the Scientific Advisory Board of the EmQM13 symposium, Ana Maria Cetto
The Light and Dark Face of a Star-Forming Nebula

NASA Astrophysics Data System (ADS)

2010-03-01

Today, ESO is unveiling an image of the little known Gum 19, a faint nebula that, in the infrared, appears dark on one half and bright on the other. On one side hot hydrogen gas is illuminated by a supergiant blue star called V391 Velorum. New star formation is taking place within the ribbon of luminous and dark material that brackets V391 Velorum's left in this perspective. After many millennia, these fledgling stars, coupled with the explosive demise of V391 Velorum as a supernova, will likely alter Gum 19's present Janus-like appearance. Gum 19 is located in the direction of the constellation Vela (the Sail) at a distance of approximately 22 000 light years. The Gum 19 moniker derives from a 1955 publication by the Australian astrophysicist Colin S. Gum that served as the first significant survey of so-called HII (read "H-two") regions in the southern sky. HII refers to hydrogen gas that is ionised, or energised to the extent that the hydrogen atoms lose their electrons. Such regions emit light at well-defined wavelengths (or colours), thereby giving these cosmic clouds their characteristic glow. And indeed, much like terrestrial clouds, the shapes and textures of these HII regions change as time passes, though over the course of eons rather than before our eyes. For now, Gum 19 has somewhat of a science fiction-esque, "rip in spacetime" look to it in this image, with a narrow, near-vertical bright region slashing across the nebula. Looking at it, you could possibly see a resemblance to a two-toned angelfish or an arrow with a darkened point. This new image of the evocative Gum 19 object was captured by an infrared instrument called SOFI, mounted on ESO's New Technology Telescope (NTT) that operates at the La Silla Observatory in Chile. SOFI stands for Son of ISAAC, after the "father" instrument, ISAAC, that is located at ESO's Very Large Telescope observatory at Paranal to the north of La Silla. Observing this nebula in the infrared allows astronomers to see
Geo-Seas - a pan-European infrastructure for the management of marine geological and geophysical data.

NASA Astrophysics Data System (ADS)

Glaves, Helen; Graham, Colin

2010-05-01

Geo-Seas - a pan-European infrastructure for the management of marine geological and geophysical data. Helen Glaves1 and Colin Graham2 on behalf of the Geo-Seas consortium The Geo-Seas project will create a network of twenty six European marine geoscience data centres from seventeen coastal countries including six from the Baltic Sea area. This will be achieved through the development of a pan-European infrastructure for the exchange of marine geoscientific data. Researchers will be able to locate and access harmonised and federated marine geological and geophysical datasets and data products held by the data centres through the Geo-Seas data portal, using a common data catalogue. The new infrastructure, an expansion of the exisiting SeaDataNet, will create an infrastructure covering oceanographic and marine geoscientific data. New data products and services will be developed following consultations with users on their current and future research requirements. Common data standards will be implemented across all of the data centres and other geological and geophysical organisations will be encouraged to adopt the protocols, standards and tools which are developed as part of the Geo-Seas project. Oceanographic and marine data include a wide range of variables, an important category of which are the geological and geophysical data sets. This data includes raw observational and analytical data as well as derived data products from seabed sediment samples, boreholes, geophysical surveys (seismic, gravity etc) and sidescan sonar surveys. All of which are essential in order to produce a complete interpretation of seabed geology. Despite there being a large volume of geological and geophysical data available for the marine environment it is currently very difficult to use these datasets in an integrated way between organisations due to different nomenclatures, formats, scales and coordinate systems being used within different organisations and also within different
Obituary: Gordon Donaldson Obituary: Gordon Donaldson

NASA Astrophysics Data System (ADS)

Pegrum, Colin; Campbell, Archie; Hampshire, Damian

2013-07-01

Gordon Donaldson died in Glasgow on 28 November 2012 at the age of 71. He was born in Edinburgh and brought up and educated in Glasgow, which was his home city for much of his life. He was educated first at Glasgow Academy, and then with a scholarship at Christ's College Cambridge. Here he read Natural Sciences, finishing with first class honors in Physics. He then did a PhD on tunneling in superconductors in the Mond Laboratory, supervised by John Adkins. These were interesting times, since type II superconductors had only recently been identified, and the Mond was a leading player in the physics of vortices and other quantum effects. It was headed by Pippard and Shoenberg, and colleagues around that time were Brian Josephson, John Clarke, Colin Gough and John Waldram. On finishing his PhD in 1966 Gordon went straight to a lectureship at the University of Lancaster. In 1975 during a sabbatical at the University of California, Berkeley, with John Clarke's group, Gordon co-invented thin-film gradiometers with integrated DC SQUIDs. He then moved back to Glasgow, to the Department of Applied Physics at Strathclyde University, where he founded a new research group to make and use superconducting devices, especially SQUIDs and gradiometers. From modest beginnings the group grew steadily, acquiring new facilities and members, until in the 1990s it had over 20 members and a host of collaborators from elsewhere in Glasgow and abroad. With funding from the Wellcome Trust, Gordon and colleagues at Glasgow University and the Southern General Hospital in Glasgow set up a new biomagnetism facility in 1998 on the hospital campus to use SQUID gradiometers made at Strathclyde for measurements on patients and volunteers. Another of his main research interests was the use of SQUIDs for nondestructive evaluation (NDE). This started in the days before high temperature superconductors (HTS) with wire-wound gradiometers and niobium SQUIDs, soon moving on to miniature thin-film niobium
Systematic analysis of natural hazards along infrastructure networks using a GIS-tool for risk assessment

NASA Astrophysics Data System (ADS)

Baruffini, Mirko

2010-05-01

GIS-based system can be for effective and efficient disaster response management. In the coming years our GIS application will be a data base containing all information needed for the evaluation of risk sites along the Gotthard line. Our GIS application can help the technical management to decide about protection measures because of, in addition to the visualisation, tools for spatial data analysis will be available. REFERENCES Bründl M. (Ed.) 2009 : Risikokonzept für Naturgefahren - Leitfaden. Nationale Plattform für Naturgefahren PLANAT, Bern. 416 S. BUWAL 1999: Risikoanalyse bei gravitativen Naturgefahren - Methode, Fallbeispiele und Daten (Risk analyses for gravitational natural hazards). Bundesamt für Umwelt, Wald und Landschaft (BUWAL). Umwelt-Materialen Nr. 107, 1-244. Loat, R. & Zimmermann, M. 2004: La gestion des risques en Suisse (Risk Management in Switzerland). In: Veyret, Y., Garry, G., Meschinet de Richemont, N. & Armand Colin (eds) 2002: Colloque Arche de la Défense 22-24 octobre 2002, dans Risques naturels et aménagement en Europe, 108-120. Maggi R. et al, 2009: Evaluation of the optimal resilience for vulnerable infrastructure networks. An interdisciplinary pilot study on the transalpine transportation corridors, NRP 54 "Sustainable Development of the Built Environment", Projekt Nr. 405 440, Final Scientific Report, Lugano
Obituary: Harding Eugene (Gene) Smith, Jr., 1947-2007

NASA Astrophysics Data System (ADS)

Lonsdale, Carol; Soifer, Tom

2009-01-01

spent countless cloudy nights listening to Gene's stories that began with "When men were men and giants roamed the Earth . . . ". I still don't know what that means, but it always preceded some sage advice." Besides astrophysics, Gene's passions included horse riding (the faster the better), sailing, hiking, the northern California coast and mountains, black-and-white photography, extremely strong coffee, travel (especially European castles and cathedrals, and any road-less-traveled that he came across), cooking and fine restaurants, Native American pottery, basketware and kachinas, and classical music. He also loved to sing, and friends would say he had a song for every occasion. He was a dedicated and enthusiastic supporter of all causes environmental and conservationist, and among figures he greatly admired were John Muir and Ansel Adams. Gene is survived by his wife of eighteen years, Dr. Carol Jean Lonsdale; step-daughter Kimberley; daughter Tamsyn; cousins Meg and Chris Bailey; in-laws Colin and Marilou Lonsdale, and Graham Lonsdale; niece Joanna; and two nephews Greg and Wes. He is also greatly missed by his many friends and colleagues, his golden retriever, Jasper, and his palomino horse, Sundance.
EDITORIAL: A fertile domain for nanoscience A fertile domain for nanoscience

NASA Astrophysics Data System (ADS)

Demming, Anna

2010-11-01

optical transmission of a solution containing rotating linear chains of magnetic nanobeads is used to detect biomolecules with picomolar sensitivity and a dynamic range of more than four orders of magnitude. In 1944 Isidor Isaac Rabi won the Nobel Prize for physics in recognition of his work in developing a resonance method for recording the magnetic properties of atomic nuclei. He recognized the possible application of his work in time keeping but it was not until the work of later researchers that the potential in medical imaging became apparent. Decades later, in 1988 Rabi was reported to have said: 'It was eerie. I saw myself in that machine. I never thought my work would come to this' [12]. The comment was provoked by the sight of a distorted image of his face, reflected on the inside cylindrical surface of a magnetic resonance imaging machine. Rabi died a few weeks later, but his work and that of fellow scientists have brought advances in medical imaging that have enabled the detection of malignant disease at early treatable stages. That his contribution has allowed timely diagnosis and treatments that have saved countless lives brings an added poignancy to his words. And there are, no doubt, many more breakthroughs in medicine and technology to come. References [1] Powers P N, Beyer H G and Dunning J R 1937 Phys. Rev. 51 371 [2] Elmore W C 1938 Phys. Rev. 54 1092 [3] Roca A G, Morales M P, O'Grady K and Serna C J 2006 Nanotechnology 17 2783 [4] Yu W W, Chang E, Sayes C M, Drezek R and Colin V L 2006 Nanotechnology 17 4483 [5] Arbab A S, Yocum G T, Kalish H, Jordan E K, Anderson S A, Khakoo A Y, Read E J and Frank J A 2004 Blood 104 1217 [6] Cho S-J, Jarrett B R, Louie A Y and Kauzlarich S M 2006 Nanotechnology 17 640 [7] Larson T A, Bankson J, Aaron J and Sokolov K 2007 Nanotechnology 18 325101 [8] Villanueva A, Cãete M, Roca A G, Calero M, Veintemillas-Verdauger S, Serna C J, Del Puerto Morales M and Miranda R 2009 Nanotechnology 20 115103 [9] Purushotham S
People

NASA Astrophysics Data System (ADS)

2001-05-01

Meeting Ms Meteorite An interview with Monica Grady conducted by Kerry Parker Monica Grady is Curator of Meteorites at the Natural History Museum, London Monica Grady I first met Monica Grady at the Physics Education stand at the Association for Science Education meeting in January where she was giving the Physics Education Lecture. She arrived early and delivered a straw shopping bag full of heavy meteorites for us to guard while she went for a look around. We looked at this humble bag with a sort of wonder. Despite her status as a world expert on Martian meteorites, Monica has no pretentions and it is easy to chat with her. She also has an enormous infectious enthusiasm for her subject. How did you get involved in meteorites? By accident really—I did chemistry and geology for my degree. In the last year we had a course about the Moon that I found fascinating. In my finals I got a mark better than I expected—I realised that I enjoyed research but I wasn't any good at field work—I saw an advert for a PhD in meteorites at Cambridge, applied... then I just continued with the research. My supervisor, Colin Pillinger, invited me and Ian Wright to move with him to set up a new research group at the Open University at Milton Keynes. After eight years there I got the job with the Natural History Museum. And you married fellow-researcher Ian Wright? Yes; we work in different places now, and although we work on different aspects of the same subject our goals are the same—to find out how the solar system formed, using extraterrestrial samples. We have lots of friends in common and we can really empathise with each other's work. We talk about work all the time. We enjoy lots of other things but over the tea table, when I ask him how his work went, he does not just say 'I had a meeting'—he can really tell me about it...we both find this an added bonus. As Curator of Meteorites what do you do? I spend about 60% of my time doing research—looking at meteorites in
PREFACE: Symmetries and Integrability of Difference Equations

NASA Astrophysics Data System (ADS)

Doliwa, Adam; Korhonen, Risto; Lafortune, Stéphane

2007-10-01

Kent in Canterbury, UK (1996), in Sabaudia near Rome, Italy (1998), at the University of Tokyo, Japan (2000), in Giens, France (2002), and in Helsinki, Finland (2004). The SIDE VII meeting was held at the University of Melbourne from 10-14 July 2006. The scientific committee consisted of Nalini Joshi (The University of Sydney), Frank W Nijhoff (University of Leeds), Reinout Quispel (La Trobe University) and Colin Rogers (University of New South Wales). The local organization was in the hands of John A G Roberts and Wolfgang K Schief. Proceedings of all the previous SIDE meetings have been published; the 1994 and 1988 meetings (edited respectively by D Levi, L Vinet and P Winternitz, and by D Levi and O Ragnisco) as volumes of the CRM Proceedings and Lecture Notes (AMS Publications), the 1996 meeting (edited by P Clarkson and F W Nijhoff) as Volume 255 in the LMS Lecture Note Series. Starting from the 1996 meeting the formula of publication has been changed to include rather selected refereed contributions submitted in response to a call for papers issued after the meetings and not restricted to their participants. Thus publications reflecting the scope of the 1996 meeting (edited by J Hietarinta, F W Nijhoff and J Satsuma) appeared in Journal of Physics A: Mathematical and General 34 48 (special issue), and of the 1998 and 2000 meetings (edited respectively by F W Nijhoff, Yu B Suris and C-M Viallet, and by J F van Diejen and R Halburd) in Journal of Nonlinear Mathematical Physics 10 (Suppl. 2) and 12 (Suppl. 2). The aim of this special issue is to benefit from the occasion offered by the SIDE VII meeting, producing an issue containing papers which represent the state-of-the-art knowledge for studying integrability and symmetry properties of difference equations. This special issue features high quality research papers and invited reviews which deal with themes that were covered by the SIDE VII conference. These are in alphabetical order: Algebraic-geometric approaches
25 years of pulsed laser deposition

NASA Astrophysics Data System (ADS)

Lorenz, Michael; Ramachandra Rao, M. S.

2014-01-01

-of-experiment schemes to shorten the optimization effort for new materials is presented at the end of this methodical section. Further, the issue contains original papers on other prominent PLD activities, such as dielectric SrTiO3 films, magnetic and spintronic La1-x Srx MnO3, and multiferroic BiFeO3. The role of cationic and anionic point defects and their control during PLD is discussed based on the examples of the simple perovskite SrMoO3 and the double perovskite Sr2CrWO6. The final paper in this thin-film-related section provides a good account of in situ high-temperature surface smoothing of Ba2TiSi2O8 fresnoite films and growth from glassy fresnoite targets with 100% theoretical density. The flexibility of the PLD technique has resulted in several schemes to grow nanostructures, which is unique in the nature of PLD. Okada's group succeeded in controlling the growth density of ZnO nanowires by varying the thickness of the ZnO buffer layer, and nanowalls could be patterned by interference phenomenon using laser irradiation. PLD-based methods are further used to grow metal nanoparticle plasmonic films with packing densities up to 1011 particles cm-2, and ZnO nanowires from screw dislocation driven two-dimensional hexagonal stacking on diamond substrates. Overall, this special issue provides an up-to-date overview on the current status, potential and the extraordinary success and development of PLD from a simple laboratory growth method to a viable industrial technique for fabrication of advanced oxide thin films. We thank all the authors and reviewers for their contributions to this special issue. We would like to place on record our gratitude for the timely help extended by the editorial team, Dr Olivia Roche, Dean Williams and Colin Adcock. References [1] Dijkkamp D, Venkatesan T, Wu X D, Shaheen S A, Jisrawi N, Min-Lee Y-H, McLean W L and Croft M 1987 Preparation of YBaCu oxide superconductor thin films using pulsed laser evaporation from high T c bulk material Appl. Phys. Lett
Europe goes to Mars - preparations are well under way

NASA Astrophysics Data System (ADS)

2001-04-01

meteorites on Earth, as the chances of contamination by biological specimens from Earth will be virtually eliminated. * What is the surface of Mars made of and what can its composition tell us about the history of the planet, in particular about the history of water there? OMEGA will map surface mineral composition more accurately than ever before. In particular, it will look for carbonates, which no previous mission has found, but which should be present if water was once abundant on Mars. * The thin Martian atmosphere is thought to be very oxidising - it turns the plentiful iron in the surface rocks and dust into rust, hence the planet's red colour. SPICAM will help to determine precisely how the atmosphere has this effect. Such understanding will ultimately have implications for designing space suits and life support system for visiting astronauts! * Was there an ancient ocean over the northern plains of Mars? The evidence revealed by previous missions has been ambiguous. The HRSC's contiguous 3D imaging in full colour has the best chance yet of revealing an ancient shoreline, if one exists. Over the next few months, the European Space Agency in collaboration with national organisations will be holding press conferences about Mars Express at different locations across Europe. Further information will follow as soon as it is available. In the meantime, background information and regular updates on the progress of the project are available at ESA's Mars Express website, at http://sci.esa.int/marsexpress Instrument and Principal Investigator ASPERA (Energetic Neutral Atoms Analyser) Rickard Lundin, Swedish Institute of Space Physics, Kiruna, Sweden (presently on sabbatical in Toulouse). Contact: Dr Stas Barabash (Co-PI), Swedish Institute of Space Physics, Box 812 98128, Kiruna, Sweden, tel. +46-980-79122, Fax: +46-980-79050, e-mail: stas@irf.se BEAGLE-2 (Geochemical Lander) Colin Pillinger, Open University, Milton Keynes, UK, tel. +44 1908 652119, fax.+44 1908 655910, e
PREFACE: Preface

NASA Astrophysics Data System (ADS)

Luo, Qingming; Wang, Lihong V.; Tuchin, Valery V.

2011-02-01

)Ruey-Jen Sung, Stanford University (USA)A Dean Sherry, The University of Texas at Dallas (USA)Bruce Tromberg, University of California/Irvine (USA)Fujia Yang, Nottingham University (UK)Jianquan Yao, Tianjin University (China)Yixin Zeng, Sun Yat-sen University Cancer Center (China)Baoyong Zheng, Hua Wei Technologies Corporation, Inc (China) Program CommitteeWei R Chen, University of Central Oklahoma (USA)Zhongping Chen, University of California/Irvine (USA)Arthur Chiou, National Yang-Ming University (Taiwan, China)Frank Y S Chuang, University of California, Davis (USA)Zhihua Ding, Zhejiang University (China)Congwu Du, Brookhaven National Laboratory (USA)Stefan Haacke, Strasbourg University - IPCMS-DON (France)Weiping Han, Agency for Science, Technology and Research (A*STAR) (Singapore)Zheng Huang, University of Colorado Health Sciences Center (USA)Zhiwei Huang, National University of Singapore (Singapore)Steven L Jacques, Oregon Health & Science University (USA)Fu-Jen Kao, National Yang-Ming University (Taiwan, China)Hideaki Koizumi, Hitachi, Ltd (Japan)Xingde Li, Johns Hopkins University (USA)Yong-qing Li, East Carolina University (USA)Chengyi Liu, South China Normal University (China)Hong Liu, University of Oklahoma (USA)Zuhong Lu, Southeast University (China)Dennis L Matthews, University of California/Davis (USA)Avraham Mayevsky, Bar Ilan University (Israel)Stephen P Morgan, University of Nottingham (UK)Shoko Nioka, University of Pennsylvania (USA)Yingtian Pan, State University of New York at Stony Brook (USA)Alexander V Priezzhev, MV Lomonosov Moscow State University (Russia)Jianan Y Qu, The Hongkong University of Science and Technology (Hong Kong, China)Colin J R Sheppard, National University of Singapore (Singapore)Mamoru Tamura, Tsinghua University (China)Sergey Ulyanov, Saratov State University (Russia)Ruikang K Wang, Oregon Health & Science University (USA)Xunbin Wei, Fudan University (China)Da Xing, South China Normal University (China)Haishan Zeng, BC Cancer Research
Institute news

NASA Astrophysics Data System (ADS)

1999-11-01

: Heriot-Watt University 4 Nov: Strathclyde University 17 Nov: York University 24 Nov: Bristol University 1 Dec: Open University 7 Dec: Kent University 14 Dec: Cardiff University 15 Dec: University of Wales, Swansea 24 Jan: Reading University 10 Feb: Abingdon School 16 Feb: Plymouth University 2 Mar: Sheffield University 7 Mar: CLRC Daresbury Laboratory 8 Mar: Liverpool University 9 Mar: Manchester 10 Mar: Lancaster University 15 Mar: Surrey University 16 Mar: Brighton University 17 Mar: St Vincent College, Gosport 22 Mar: Leeds University 23 Mar: Loughborough Grammar School 24 Mar: Oakham School 30 Mar: St Peter's School, Wolverhampton 18 May: University of Hertfordshire 11 Jul: Science Museum 12 Jul: Royal Institution The assistance of the Engineering and Physical Sciences Research Council, CLRC Daresbury Laboratory and DERA Malvern is acknowledged in staging this year's events. Courses, lectures and competitions `Physics in perspective', the study course for sixth-formers and college students, will take place in London on 6 - 8 February 2000, offering insights into many different aspects of physics. The programme commences during the afternoon of Sunday 6 February at King's College London with a Balloon debate, followed by Brian O'Rourke's talk on the `Physics of Formula 1 cars'. On Monday 7 February at the Royal Institution, John Avison (former Honorary Editor of Physics Education) will develop the `Thinking physics' theme by presenting the audience with varied topics in an unusual and challenging way. The second talk of the afternoon, by Professor Roy Sambles, will cover `Lasers, light and liquid crystals'. On the final day (Tuesday 8 February), again at the Royal Institution, Sara Ellison will lead the audience in `Heavenly pursuits', whilst later Dr Colin Wright will entertain with `Juggling - theory and practice'. Futher information and bookings for the course can be made by contacting Mrs Leila Solomon at The Institute of Physics, 76 Portland Place, London W1N 3DH
Thunderstorm activity in early Earth: same estimations from point of view a role of electric discharges in formation of prebiotic conditions

NASA Astrophysics Data System (ADS)

Serozhkin, Yu.

2008-09-01

frequently tracks in ground, so-called fulgurites, the alloyed fragments of surface, in which has struck the lightning. There are two classes of fulgurites: sand fulgurites and rock fulgurites. Since fulgurites are real glasses, they are very resistant to weathering and are usually well preserved for a long period of time. For this reason they are used as paleoindicator. It would be interesting to study the opportunity of definition of the lightning stroke date. Conclusion First, we must to orient on such conditions in Earth's early atmosphere in which are possible the existence a so-called charge reverse layer. Next, it would be interesting to study the opportunity of definition of the lightning stroke date by fulgurites. At last, our estimations of the role of electrical discharges for synthesis in atmosphere of early Earth we must to do taking into account the presence in atmosphere of dust grains, ice crystals and aerosols. References [1] Kasting James F. Earth's Early Atmosphere. Science, (1993), Vol. 259, 12 February, pp. 920-926 [2] von Liebig, J. Am. Chem. Phys. 38, pp.329-333 (1827) [3] Lamarque et al. 1996 J. Geophys. Res.101, 22955-68 [4] Chyba C., Sagan C. Electrical energy sources for organic synthesis on the early Earth. Orig Life Evol Biosph. 1991;Vol. 21:pp3-17. [5] Allamandola, L.J. and Hudgins, D.M. (2003) From Interstellar Polycyclic Aromatic Hydrocarbons and Ice to Astrobiology. Proceedings of the NATO ASI entitled "Solid State Astrochemistry", V. Pirronello and J. Krelowski (eds.), Kluwer: Dordrecht. [6] Hugh G.M. Hill; Joseph A. Nuth, (2003), The Catalytic Potential of Cosmic Dust: Implications for Prebiotic Chemistry in the Solar Nebula and Other Protoplanetary Systems, Astrobiology, Vol. 3, No. 2, pp.291-304 [7] Colin Price, NATO Advanced Study Institute on Sprites, Elves and Intense Lightning Discharges, Corte in Corsica, July 24-31, 2004
Chandra and the VLT Jointly Investigate the Cosmic X-Ray Background

NASA Astrophysics Data System (ADS)

2001-03-01

Hasinger , Gyula Szokoly (Astrophysical Institute Potsdam [AIP], Germany), Colin Norman , Roberto Gilli , Lisa Kewley , Wei Zheng , Andrew Zirm , JungXian Wang (Johns Hopkins University [JHU], Baltimore, USA), Ken Kellerman (National Radio Astronomy Observatory [NRAO], Charlottesville, USA), Ethan Schreier , Anton Koekemoer and Norman Grogin (Space Telescope Science Institute (STScI), Baltimore, USA). [2] In astronomy, the redshift denotes the fraction by which the lines in the spectrum of an object are shifted towards longer wavelengths. The observed redshift of a distant galaxy or quasar gives a direct estimate of the apparent recession velocity as caused by the universal expansion. Since the expansion rate increases with the distance, the velocity is itself a function (the Hubble relation) of the distance to the object. Redshifts of 1 and 3.7 correspond to when the Universe was about 43% and 12% of its present age. The distances indicated in this Press Release depend on the cosmological model chosen and are based on an age of 19,000 million years. Technical information about the photos PR Photo 09a/01 shows B-, R- and I-band images of a 20 x 20 arcsec 2 area within the CDFS, centred on the Type II Quasar CXOCDFS J033229.9 -275106 . They were obtained with the MPG/ESO 2.2-m telescope and the Wide-Field Imager (WFI) at La Silla (B-band; 8 hrs exposure time) and the 8.2-m VLT ANTU telescope with the FORS1 multi-mode instrument at Paranal (R- and I-bands; each 2 hrs exposure). The measured magnitudes are R=23.5 and I=22.7. The overlaid contours show the associated Chandra X-ray source (smoothed with a sigma = 1 arcsec gaussian profile). North is up and East is left. The spectrum shown in PR Photo 09b/01 was obtained on November 25, 2000, with VLT ANTU and FORS1 in the multislit mode (150-I grism, 1.2 arcsec slit). The exposure time was 3 hours.
News and Announcements

NASA Astrophysics Data System (ADS)

1999-04-01

celebrate the potential for transforming education through information technology; we will bring together information resource professionals to participate in a diverse, comprehensive, carefully focused program with many opportunities for interactive and one-on-one communication. The conference has five tracks with each track having five focus areas: technical infrastructure; planning and strategy; service delivery; applications and best practices; and management and organization. Speakers at the general session include Colin Powell, retired chairman of the Joint Chiefs of Staff; Rita Colwell, director of the National Science Foundation; and Barry Munitz, president of the J. Paul Getty Trust. For more information visit the conference WWW site at http://www.educause.edu/conference/e99. Proposal Deadlines National Science Foundation Division of Undergraduate Education (DUE)
- Course, Curriculum, and Laboratory Improvement (CCLI) June 7, 1999
- NSF Collaboratives for Excellence in Teacher Preparation (CETP) Preliminary proposals, Track 1 May 1, 1999 Formal proposals, Track 1 September 1, 1999
- DUE online 1999 guidelines, NSF 99-53
available at http://www.nsf.gov/cgi-bin/getpub?nsf9953 For further information about NSF DUE programs consult the DUE Web site at http://www.ehr.nsf.gov/EHR/DUE/start.htm or contact the DUE Information Center; phone: 703/306-1666; email: undergrad@nsf.gov. The Camille and Henry Dreyfus Foundation, Inc.
- Camille Dreyfus Teacher-Scholar Awards Program: November 16, 1998
- Henry Dreyfus Teacher-Scholar Awards Program: July 1, 1999
- New Faculty Awards Program: May 14, 1999
- Faculty Start-up Grants for Undergraduate Institutions: May 14, 1999
- Scholar/Fellow Program for Undergraduate Institutions: July 1, 1999
- Special Grant Program in the Chemical Sciences: July 15, 1999
- Postdoctoral Program in Environmental Chemistry: February 26, 1999
Further information may be obtained from The Camille and Henry
hwhap_Ep15_Astronaut Photography

NASA Image and Video Library

2017-10-19

DESCRIBE THAT EXPERIENCE? >> IT’S HARD TO TAKE IT ALL IN. IT’S SO MASSIVE. IT’ EVERYWHERE. THE THINGS THAT STUCK OUT IN MY MIND WERE SEEING-- AT NIGHT, SEEING FLASHES OF LIGHTENING THAT WENT ON FOR ABOUT FIVE MINUTES. THE BRIGHT SUNLIGHT, IT WAS VERY IMPRESSIVE. IN FACT, I’LL NEVER FORGET WHEN-- ON THE VERY FIRST SPACEWALK WHEN RANDY OPENED THE HATCH THE AIRLOCK JUST LIT UP BECAUSE OF ALL THE REFLECTED LIGHT COMING FROM THE EARTH INTO THE AIRLOCK. AND THE AIRLOCK’S A VERY CONFINED PLACE. IT DOESN’T HAVE-- IT’S WELL LIT, BUT IT’S NOT LIT LIKE THE SUN, AND SO IT CHANGED THE FEELING OF THE AIRLOCK DRAMATICALLY WHEN THAT HATCH OPENED UP AND THEN IT REALLY FELT REAL TO ME. >> THAT’S AWESOME. ALL RIGHT, ANOTHER QUESTION. COLIN ON FACEBOOK WANTS TO KNOW, “IF YOU GUYS TAKE SPACE SELFIES UP THERE?” MAYBE YOU GOT TO TAKE ONE ON YOUR SPACEWALK. >> [ INDISTINCT ]. >> GO AHEAD, GO AHEAD. >> YEAH, I JUST POSTED SOMETHING FROM OUR LAST SPACEWALK ON TUESDAY WITH THE SPACE SELFIE AND TRIED TO EXPLAIN TO PEOPLE BECAUSE YOU GOT THESE BIG INFLATED GLOVES ON AND YOU’RE TRYING TO TAKE THIS CAMERA. AND IT’S LIKE IF YOU WENT TO YOUR OVEN, AND GRABBED YOUR OVEN MITTS, AND THEN GRABBED YOUR CAMERA AND TRIED TO TAKE THE SELFIE. THAT’S WHAT IT’S KIND OF LIKE IN SPACE TRYING TO DO THAT, AND LINE IT UP, AND FEEL FOR THE BUTTON, AND GET THE SHOT. SO YOU END UP TRYING TO SQUEEZE IT A FEW TIMES. HOPEFULLY YOU SEE MAYBE THE SHUTTER ACTUALLY TOOK THE PICTURE. AND THEN YOU COME BACK INSIDE LATER ON AND GO, “HEY, DID I GET ANYTHING?” >> AMAZING. HEY, SO PAOLO, WE WERE KIND OF LOOKING AT SOME OF YOUR PHOTOS ON TWITTER, JUST THE ONES THAT YOU’RE SHARING. I SEE A LOT OF AMAZING PICTURES OF ITALY, BUT ONE THAT REALLY STUCK OUT IN MY MIND WAS A PICTURE OF MADAGASCAR AND THE LOGGING GOING ON THERE. JUST FROM THE PERSPECTIVE THAT YOU SEE OF THE EARTH, WHAT SORTS OF IDEAS OF HUMAN INFLUENCE DO YOU SEE FROM 250 MILES ABOVE THE EARTH? >> WELL, WHEN YOU COME UP HERE AND YOU LOOK OUT

Some links on this page may take you to non-federal websites. Their policies may differ from this site.