Closed Crawl Space Performance: Proof of Concept in the Production Builder Marketplace
Malkin-Weber, Melissa; Dastur, Cyrus; Mauceri, Maria; Hannas, Benjamin
2008-10-30T23:59:59.000Z
This overview is intended to be a very concise, limited summary of the key project activities discussed in the detailed report that follows. Due to the large scope of this project, the detailed report is broken into three individually titled sections. Each section repeats key background information, with the goal that the sections will eventually stand alone as complete reports on the major activities of the project. The information presented herein comes from ongoing research, so please note that all observations, findings and recommendations presented are preliminary and subject to change in the future. We invite and welcome your comments and suggestions for improving the project. Advanced Energy completed its first jointly-funded crawl space research project with the Department of Energy in 2005. That project, funded under award number DE-FC26-00NT40995 and titled 'A Field Study Comparison of the Energy and Moisture Performance Characteristics of Ventilated Versus Sealed Crawl Spaces in the South' demonstrated the substantial energy efficiency and moisture management benefits that result from using properly closed crawl space foundations for residential construction instead of traditional wall vented crawl space foundations. Two activities of this first project included (1) an assessment of ten existing homes to document commonly observed energy and moisture failures associated with wall-vented crawl space foundations and (2) a detailed literature review that documented both the history of closed crawl space research and the historical lack of scientific justification for building code requirements for crawl space ventilation. The most valuable activity of the 2005 project proved to be the field demonstration of various closed crawl space techniques, which were implemented in a set of twelve small (1040 square feet), simply designed homes in eastern North Carolina. These homes had matched envelope, mechanical and architectural designs, and comparable performance characteristics with regard to infiltration and duct leakage. Researchers settled on two closed crawl space designs, one with insulation located in the framed floor structure above the crawl space and one with insulation on the crawl space perimeter wall, as the designs with the most widespread potential for application. Researchers based this assessment not only on the field performance, but also on input from residential builders, pest control professionals, code officials, installers, and building scientists active in the region. The key findings from the field demonstration were that (1) closed crawl spaces stay substantially drier than traditional wall-vented crawl spaces during humid climate conditions, and (2) the houses built on the closed crawl space foundations saved, on average, 15% or more on annual energy used for space heating and cooling. A comparison of the actual energy performance of the homes versus the performance predicted by a popular HERS software application showed that the software was unable to predict the demonstrated savings, in some cases predicting an energy penalty. Findings from the 2005 project were summarized in a publication titled Closed Crawl Spaces: An Introduction to Design, Construction and Performance. Since its release, the publication has received widespread use by builders, homeowners, installers and code officials concerned about crawl space construction. The findings were also used to create major revisions to the NC Residential Code, which were adopted in 2004 and immediately began to reduce the regulatory barriers to widespread commercialization of the technology in NC, particularly in new residential construction. Full project details are located at www.crawlspaces.org.
MCDONALD, K.M.
2000-08-01T23:59:59.000Z
This drum-handling plan proposes a method to deal with unvented transuranic drums encountered during retrieval of drums. Finding unvented drums during retrieval activities was expected, as identified in the Transuranic (TRU) Phase I Retrieval Plan (HNF-4781). However, significant numbers of unvented drums were not expected until excavation of buried drums began. This plan represents accelerated planning for management of unvented drums. A plan is proposed that manages unvented drums differently based on three categories. The first category of drums is any that visually appear to be pressurized. These will be vented immediately, using either the Hanford Fire Department Hazardous Materials (Haz. Mat.) team, if such are encountered before the facilities' capabilities are established, or using internal capabilities, once established. To date, no drums have been retrieved that showed signs of pressurization. The second category consists of drums that contain a minimal amount of Pu isotopes. This minimal amount is typically less than 1 gram of Pu, but may be waste-stream dependent. Drums in this category are assayed to determine if they are low-level waste (LLW). LLW drums are typically disposed of without venting. Any unvented drums that assay as TRU will be staged for a future venting campaign, using appropriate safety precautions in their handling. The third category of drums is those for which records show larger amounts of Pu isotopes (typically greater than or equal to 1 gram of Pu). These are assumed to be TRU and are not assayed at this point, but are staged for a future venting campaign. Any of these drums that do not have a visible venting device will be staged awaiting venting, and will be managed under appropriate controls, including covering the drums to protect from direct solar exposure, minimizing of container movement, and placement of a barrier to restrict vehicle access. There are a number of equipment options available to perform the venting. The preferred option is to use equipment provided by a commercial vendor during the first few years of retrieval and venting. This is based on a number of reasons. First, retrieval funding is uncertain. Using a commercial vendor will allow DOE-RL to avoid the investment and maintenance costs if retrieval is not funded. Second, when funding can be identified, retrieval will likely be performed with minimal initial throughput and intermittent operations. Again, costs can be saved by using contracted vendor services only as needed, rather than supporting Hanford equipment full time. When full-scale retrieval begins and the number of drums requiring venting increases significantly, then use of the Hanford container venting system (CVS) should be considered.
Unvented, Conditioned Attics - Building America Top Innovation...
Read about this Top Innovation. See an example of this Top Innovation in action. Find case studies of Building America projects across the country that demonstrate unvented,...
Unvented, Conditioned Crawlspaces - Building America Top Innovation...
about this Top Innovation. See an example of this Top Innovation in action. Find more case studies of Building America projects across the country that demonstrate unvented,...
CASE STUDY OF DUCT RETROFIT OF A 1985 HOME AND GUIDELINES FOR ATTIC AND CRAWL SPACE DUCT SEALING
Boudreaux, Philip R [ORNL; Christian, Jeffrey E [ORNL; Jackson, Roderick K [ORNL
2012-01-01T23:59:59.000Z
The U.S. Department of Energy (DOE) is fully committed to research for developing the information and capabilities necessary to provide cost-effective residential retrofits yielding 50% energy savings within the next several years. Heating, ventilation, and air conditioning (HVAC) is the biggest energy end use in the residential sector, and a significant amount of energy can be wasted through leaky ductwork in unconditioned spaces such as attics and crawl spaces. A detailed duct sealing case study is presented for one house along with nine brief descriptions of other duct retrofits completed in the mixed-humid climate. Costs and estimated energy savings are reported for most of the ten houses. Costs for the retrofits ranged from $0.92/ft2 to $1.80/ft2 of living space and estimated yearly energy cost savings due to the duct retrofits range from 1.8% to 18.5%. Lessons learned and duct sealing guidelines based on these ten houses, as well as close work with the HVAC industry in the mixed-humid climate of East Tennessee, northern Georgia, and south-central Kentucky are presented. It is hoped that the lessons learned and guidelines will influence local HVAC contractors, energy auditors, and homeowners when diagnosing or repairing HVAC duct leakage and will be useful for steering DOE s future research in this area.
Comparative Study of Vented vs. Unvented Crawlspaces
Biswas, Kaushik [ORNL; Christian, Jeffrey E [ORNL; Gehl, Anthony C [ORNL
2011-10-01T23:59:59.000Z
There has been a significant amount of research in the area of building energy efficiency and durability. However, well-documented quantitative information on the impact of crawlspaces on the performance of residential structures is lacking. The objective of this study was to evaluate and compare the effects of two crawlspace strategies on the whole-house performance of a pair of houses in a mixed humid climate. These houses were built with advanced envelope systems to provide energy savings of 50% or more compared to traditional 2010 new construction. One crawlspace contains insulated walls and is sealed and semi-conditioned. The other is a traditional vented crawlspace with insulation in the crawlspace ceiling. The vented (traditional) crawlspace contains fiberglass batts installed in the floor chase cavities above the crawl, while the sealed and insulated crawlspace contains foil-faced polyisocyanurate foam insulation on the interior side of the masonry walls. Various sensors to measure temperatures, heat flux through crawlspace walls and ceiling, and relative humidity were installed in the two crawlspaces. Data from these sensors have been analyzed to compare the performance of the two crawlspace designs. The analysis results indicated that the sealed and insulated crawlspace design is better than the traditional vented crawlspace in the mixed humid climate.
Moisture Risk in Unvented Attics Due to Air Leakage Paths
Prahl, D.; Shaffer, M.
2014-11-01T23:59:59.000Z
IBACOS completed an initial analysis of moisture damage potential in an unvented attic insulated with closed-cell spray polyurethane foam. To complete this analysis, the research team collected field data, used computational fluid dynamics to quantify the airflow rates through individual airflow (crack) paths, simulated hourly flow rates through the leakage paths with CONTAM software, correlated the CONTAM flow rates with indoor humidity ratios from Building Energy Optimization software, and used Warme und Feuchte instationar Pro two-dimensional modeling to determine the moisture content of the building materials surrounding the cracks. Given the number of simplifying assumptions and numerical models associated with this analysis, the results indicate that localized damage due to high moisture content of the roof sheathing is possible under very low airflow rates. Reducing the number of assumptions and approximations through field studies and laboratory experiments would be valuable to understand the real-world moisture damage potential in unvented attics.
Broader source: Energy.gov [DOE]
This presentation was delivered at the February 12, 2015, Building America webinar, High-Performance Enclosure Strategies, Part I: Unvented Roof Systems and Innovative Advanced Framing Strategies.
A Hygrothermal Risk Analysis Applied to Residential Unvented Attics
Pallin, Simon B [ORNL] [ORNL; Kehrer, Manfred [ORNL] [ORNL
2013-01-01T23:59:59.000Z
Aresidential building, constructed with an unvented attic, is acommonroof assembly in the United States.The expected hygrothermal performance and service life of the roof are difficult to estimate due to a number of varying parameters.Typical parameters expected to vary are the climate, direction, and slope of the roof as well as the radiation properties of the surface material. Furthermore, influential parameters are indoor moisture excess, air leakages through the attic floor, and leakages from air-handling unit and ventilation ducts. In addition, the type of building materials such as the insulation material and closed or open cell spray polyurethane foam will influence the future performance of the roof. A development of a simulation model of the roof assembly will enable a risk and sensitivity analysis, in which the most important varying parameters on the hygrothermal performance can be determined. The model is designed to perform probabilistic simulations using mathematical and hygrothermal calculation tools. The varying input parameters can be chosen from existing measurements, simulations, or standards. An analysis is applied to determine the risk of consequences, such as mold growth, rot, or energy demand of the HVAC unit. Furthermore, the future performance of the roof can be simulated in different climates to facilitate the design of an efficient and reliable roof construction with the most suitable technical solution and to determine the most appropriate building materials for a given climate
Building America Top Innovations Hall of Fame Profile ? Unvented...
levels, a home is likely to have high mold counts inside the living space (Malkin-Weber et al. 2008). Mold contributes to respiratory problems, such as asthma. Moist...
Building America Top Innovations Hall of Fame Profile Â… Unvented Crawlspaces Code Adoption
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: Theof Energy Future ofHydronic HeatingManagementCrawlspaces that are unvented
On the Stability of Web Crawling and Web Reid Anderson1
Chaudhuri, Surajit
On the Stability of Web Crawling and Web Search Reid Anderson1 , Christian Borgs1 , Jennifer Chayes moti- vated by web crawling. We introduce a notion of stable cores, which is the set of web pages that are usually contained in the crawling buffer when the buffer size is smaller than the total number of web
TS-IDS Algorithm For Query Selection in the Deep Web Crawling
Lu, Jianguo
TS-IDS Algorithm For Query Selection in the Deep Web Crawling Yan Wang1 , Jianguo Lu2 , and Jessica. The deep web crawling is the process of collecting data items inside a data source hidden behind searchable of documents and terms involved, calls for new approximation algorithms for efficient deep web data crawling
Lu, Jianguo
2010-01-01T23:59:59.000Z
Queries from Sample to Crawl Deep Web Data Sources Yan Wang a Jianguo Lu a,c Jie Liang a Jessica Chen crawl a deep web data source using a set of sample documents. Crawling deep web is the process of collecting data from search interfaces by issuing queries. One of the major challenges in crawling deep web
Intelligent and Adaptive Crawling of Web Applications for Web Archiving
Senellart, Pierre
Intelligent and Adaptive Crawling of Web Applications for Web Archiving Muhammad Faheem1 and Pierre Kong, Hong Kong firstname.lastname@telecom.paristech.fr Abstract. Web sites are dynamic in nature with content and structure changing overtime. Many pages on the Web are produced by content management systems
Crawling Waves from Radiation Force Excitation ZAEGYOO HAH,1
Parker, Kevin J.
Crawling Waves from Radiation Force Excitation ZAEGYOO HAH,1 CHRISTOPHER HAZARD,2 YOUNG THUNG CHO1 from focused beams that produce radiation force excitation within the tissue. Some examples are also radiofrequency ablated hepatic lesions in vitro 6,7 to characterize human skeletal muscle in vivo 8, 9
Crawling Deep Web Using a New Set Covering , Jianguo Lu12
Lu, Jianguo
Crawling Deep Web Using a New Set Covering Algorithm Yan Wang1 , Jianguo Lu12 , and Jessica Chen1 1,jlu,xjchen}@uwindsor.ca 2 Key Lab of Novel Software Technology, Nanjing, China. Abstract. Crawling the deep web often studied. The conventional set cov- ering algorithms, however, do not work well when applied to deep web
Learning Deep Web Crawling with Diverse Features Lu Jiang, Zhaohui Wu, Qinghua Zheng and Jun Liu
Shamos, Michael I.
Learning Deep Web Crawling with Diverse Features Lu Jiang, Zhaohui Wu, Qinghua Zheng and Jun Liu@yahoo.com, wzh@stu.xjtu.edu.cn, qhzheng@mail.xjtu.edu.cn, liukeen@mail.xjtu.edu.cn Abstract--The key to Deep Web crawling is to submit promising keywords to query form and retrieve Deep Web content efficiently. To select
Tuning Gastropod Locomotion: Modeling The Influence Of Mucus Rheology on the Cost of Crawling
Lauga, Eric
2007-05-04T23:59:59.000Z
Common gastropods such as snails crawl on a solid substrate by propagating muscular waves of shear stress on a viscoelastic mucus. Producing the mucus accounts for the largest component in the gastropod’s energy budget, ...
STATE OF CALIFORNIA SPACE CONDITIONING SYSTEMS, DUCTS AND FANS
, crawl- space, etc.) Duct R-value Heating Load (Btu/hr) Heating Capacity (Btu/hr) Equip Type (package Load (Btu/hr) Cooling Capacity (Btu/hr) 1. If project is new construction, see Footnotes to Standards
Focused Crawling of the Deep Web Using Service Class Descriptions
Rocco, D; Liu, L; Critchlow, T
2004-06-21T23:59:59.000Z
Dynamic Web data sources--sometimes known collectively as the Deep Web--increase the utility of the Web by providing intuitive access to data repositories anywhere that Web access is available. Deep Web services provide access to real-time information, like entertainment event listings, or present a Web interface to large databases or other data repositories. Recent studies suggest that the size and growth rate of the dynamic Web greatly exceed that of the static Web, yet dynamic content is often ignored by existing search engine indexers owing to the technical challenges that arise when attempting to search the Deep Web. To address these challenges, we present DynaBot, a service-centric crawler for discovering and clustering Deep Web sources offering dynamic content. DynaBot has three unique characteristics. First, DynaBot utilizes a service class model of the Web implemented through the construction of service class descriptions (SCDs). Second, DynaBot employs a modular, self-tuning system architecture for focused crawling of the DeepWeb using service class descriptions. Third, DynaBot incorporates methods and algorithms for efficient probing of the Deep Web and for discovering and clustering Deep Web sources and services through SCD-based service matching analysis. Our experimental results demonstrate the effectiveness of the service class discovery, probing, and matching algorithms and suggest techniques for efficiently managing service discovery in the face of the immense scale of the Deep Web.
RoACH: An autonomous 2.4g crawling hexapod robot Aaron M. Hoover, Erik Steltz, Ronald S. Fearing
Fearing, Ron
RoACH: An autonomous 2.4g crawling hexapod robot Aaron M. Hoover, Erik Steltz, Ronald S. Fearing and battery, RoACH is the smallest and lightest autonomous legged robot produced to date. I. INTRODUCTION.4g robotic, autonomous, crawling hexapod (RoACH) capable of sustained locomotion. The robot makes use
Crawling Along the Pareto Front: Tales From the Practice Martina Hasenjager
Coello, Carlos A. Coello
Crawling Along the Pareto Front: Tales From the Practice Martina HasenjÂ¨ager Honda Research Institute Europe GmbH Carl-Legien-Str. 30 63073 Offenbach, Germany martina.hasenjaeger@honda-ri.de Bernhard Sendhoff Honda Research Institute Europe GmbH Carl-Legien-Str. 30 63073 Offenbach, Germany bs@honda
Google's Deep-Web Crawl Jayant Madhavan David Ko Lucja Kot
Google's Deep-Web Crawl Jayant Madhavan David Ko Lucja Kot Google Inc. Google Inc. Cornell@cs.ucsd.edu halevy@google.com ABSTRACT The Deep Web, i.e., content hidden behind HTML forms, has long been of the structured data on the Web, accessing Deep-Web content has been a long-standing challenge for the database
Shamos, Michael I.
Efficient Deep Web Crawling Using Reinforcement Learning Lu Jiang, Zhaohui Wu, Qian Feng, Jun Liu@mail.xjtu.edu.cn, qhzheng@mail.xjtu.edu.cn Abstract. Deep web refers to the hidden part of the Web that remains unavailable for standard Web crawlers. To obtain content of Deep Web is challenging and has been acknowledged
CRAWLING DEEP WEB CONTENT THROUGH QUERY FORMS Jun Liu, Zhaohui Wu, Lu Jiang, Qinghua Zheng, Xiao Liu
Shamos, Michael I.
CRAWLING DEEP WEB CONTENT THROUGH QUERY FORMS Jun Liu, Zhaohui Wu, Lu Jiang, Qinghua Zheng, Xiao: Deep Web, Deep Web Surfacing, Minimum Executable Pattern, Adaptive Query Abstract: This paper proposes-based Deep Web adaptive query method. The query method extends query interface from single textbox to MEP set
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del Sol HomeFacebookScholarship Fund3Biology|Solar windMarch 26,SowjanyaSpace Space The
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del Sol HomeFacebookScholarship Fund3Biology|Solar windMarch 26,SowjanyaSpace Space
Unvented, Conditioned Crawlspaces - Building America Top Innovation |
Broader source: Energy.gov (indexed) [DOE]
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group current C3E AmbassadorsUS-EU-Japan-JapanHighlyFrom leftMore
Unvented Crawlspace Code Adoption - Building America Top Innovation...
See an example of a conditioned crawlspace in the mixed-humid climate zone. Find case studies of Building America projects across the country that are implementing...
Unvented, Conditioned Attics - Building America Top Innovation | Department
Broader source: Energy.gov (indexed) [DOE]
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group current C3E AmbassadorsUS-EU-Japan-JapanHighlyFrom leftMore Documents
Unvented Crawlspace Code Adoption - Building America Top Innovation |
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2, 2015 -Helicopter-Japan Joint Nuclear D.C. * Brussels * San Francisco
Unvented, Conditioned Attics - Building America Top Innovation | Department
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your DensityEnergy U.S.-China Electric Vehicle and03/02 TUE 08:59 FAX 423 241 3897Extending 2003, the Lewisof
Edward Anderson
2014-11-30T23:59:59.000Z
Wheeler emphasized the study of Superspace - the space of 3-geometries on a spatial manifold of fixed topology. This is a configuration space for GR; knowledge of configuration spaces is useful as regards dynamics and QM.In this Article I consider furthmore generalized configuration spaces to all levels within the conventional `equipped sets' paradigm of mathematical structure used in fundamental Theoretical Physics. This covers A) the more familiar issue of topology change in the sense of topological manifolds (tied to cobordisms), including via pinched manifolds. B) The less familiar issue of not regarding as fixed the yet deeper levels of structure: topological spaces themselves (and their metric space subcase), collections of subsets and sets. Isham has previously presented quantization schemes for a number of these. I consider some classical preliminaries for this program, aside from the most obvious (classical dynamics for each). Rather, I provide I) to all levels Relational and Background Independence criteria, which have Problem of Time facets as consequences. I demonstrate that many of these issues descend all the way down, whilst also documenting at which level the others cease to apply. II) Probability theory on configuration spaces. In fact such a stochastic treatment is how to further mathematize the hitherto fairly formal and sketchy subject of records theory (a type of formultion of quantum gravity). Along these lines I provide a number of further examples of records theories. This is in addition to Kendall's shape statistics being the example corresponding to relational mechanics models. To this example I now add 1) Cech cohomology, 2) Kendall's random sets, 3) the lattice of topologies on a fixed set. I finally consider 4) sheaves, both as a generalization of Cech cohomology and in connection to the study of stratified manifolds such as Superspace itself.
Hacker, Randi; Oborny, Jaimie; Tsutsui, William
2006-07-05T23:59:59.000Z
Broadcast Transcript: In space, no one can hear you scream... but did you know that in space no one can detect your smell either? The smell-taste connection means that food in space is not only weightless but tasteless, too. What's a flavor...
J. Kowalski-Glikman
2009-07-18T23:59:59.000Z
In this paper we construct, and investigate some thermal properties of, the non-commutative counterpart of Rindler space, which we call $\\kappa$--Rindler space. This space is obtained by changing variables in the defining commutators of $\\kappa$--Minkowski space. We then re-derive the commutator structure of $\\kappa$--Rindler space with the help of an appropriate star product, obtained from the $\\kappa$--Minkowski one. Using this star product, following the idea of Padmanabhan, we find the leading order, $1/\\kappa$ correction to the Hawking thermal spectrum.
Kinesin: walking, crawling or sliding along?
Yildiz, Ahmet
is a dimer in which the coiled-coil regions of two monomers are wound around each other to form a common coiled-coil dimerization region and a globular tail domain [4]. The active form of conventional kinesin
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del Sol HomeFacebookScholarship Fund3Biology|Solar windMarch 26,SowjanyaSpaceSpace
Amin, Ash
2014-01-01T23:59:59.000Z
, symbolic and affective association. The cultural and political pushes of markets, states, parliaments, bureaucracies, telephones, television, film, print and social media, religion, nation, and other spaces of attachment tend to be neglected... -corporeal, subject-centred? It is generally assumed that in urban areas with rudimentary technologies, poor infrastructures, and failing bureaucracies, humans do the heavy lifting: parsing without prosthetics and developing skills of improvisation, acuity...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over Our Instagram Secretary Moniz9MorganYouofSolvingexplore correlation613Space451
Alkhalili, Nura
2012-01-01T23:59:59.000Z
Volume 25, 2012 Contestation of Space A Photo Essay by Nuraoccurring in Ramallah between refugee and non-refugee space.Keywords: Divided spaces Introduction This study was
Martínez-de-Albéniz, V.; Roels, G.
2007-01-01T23:59:59.000Z
Retailers, and Shelf Space. ” Journal of Marketing, 26(3),Model for Optimizing Retail Space Allocations. ” ManagementMethods to Estimate Shelf Space Elasticities. ” Quant.
Lyapunov functions nonlinear spaces
Hafstein, Sigurður Freyr
Lyapunov functions on nonlinear spaces R. Sepulchre -- University of Liege, Belgium Reykjavik - July 2013 Constructing Lyapunov functions: a personal journey · Lyap functions in linear spaces (1994: homogeneous spaces with flat, positive, and negative curvature) Lyapunov functions in linear spaces 3
3741SPACE AUDIT PROCEDURE Space audit
Page 1 3741SPACE AUDIT PROCEDURE Space audit identified to be conducted Will audit disrupt or disturb occupants of the space Notify Faculty, School or Business Unit of the audit Is the audit for timetabling purposes Is the audit a physical audit Confirm audit requirements Is the audit for other space
UNIVERSITY SPACE POLICY ALLOCATION OF UNIVERSITY SPACE
UNIVERSITY COLLEGE DUBLIN UNIVERSITY SPACE POLICY #12;ALLOCATION OF UNIVERSITY SPACE I Purpose To provide a methodology for the allocation of space across the University II Background Due to the university's success in attracting research funding, the need for space and facilities has grown
COMMERCIAL SPACE ACCOMPLISHMENTS Commercial Cargo Space Accomplishments
Waliser, Duane E.
11/13/2013 COMMERCIAL SPACE ACCOMPLISHMENTS Commercial Cargo Space Accomplishments The Obama Administration's ambitious commercial space program, which has bipartisan support in Congress, has enabled NASA's successful partnership with two American companies now able to resupply the station - SpaceX and Orbital
Building America Top Innovations Hall of Fame Profile Â… Unvented, Conditioned Attics
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: Theof Energy Future ofHydronic HeatingManagementCrawlspaces that are
Building America Top Innovations Hall of Fame Profile Â… Unvented, Conditioned Crawlspaces
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: Theof Energy Future ofHydronic HeatingManagementCrawlspaces that arehave found
CRYSTALLOGRAPHIC POINT AND SPACE
California at Santa Cruz, University of
CRYSTALLOGRAPHIC POINT AND SPACE GROUPS Andy Elvin June 10, 2013 #12;Contents Point and Space no reflection axes #12;Cube and Octahedron are dual Symmetries under Oh #12;Space Groups Subgroups of E(3) Point Group + Translation { R | 0 }{ E | t }a = { R | t }a = Ra + t 230 Space Groups 73 symmorphic space
Behmer, Spencer T.
Definitions Â· Numbered Space Â a single space marked with a number and reserved for a single permit 24/7 Â· Unnumbered Space Â a space which can be used by any customer allowed to park in that lot. High Low Average Question 4: If I buy a staff permit for an UNNUMBERED* space in a non-gated surface
Arif, H.; Barbosa, H.; Bardet, C.; Baroud, M.; Behar, A.; Berrier, K.; Berthe, P.; Bertrand, R.; Bibyk, I.; Bisson, J.; Bloch, L.; Bobadilla, G.; Bourque, D.; Bush, L.; Carandang, R.; Chiku, T.; Crosby, N.; De Seixas, M.; De Vries, J.; Doll, S.; Dufour, F.; Eckart, P.; Fahey, M.; Fenot, F.; Foeckersperger, S.; Fontaine, J.E.; Fowler, R.; Frey, H.; Fujio, H.; Gasa, J.M.; Gleave, J.; Godoe, J.; Green, I.; Haeberli, R.; Hanada, T.; Ha
1992-08-01T23:59:59.000Z
Information pertaining to the Space Solar Power Program is presented on energy analysis; markets; overall development plan; organizational plan; environmental and safety issues; power systems; space transportation; space manufacturing, construction, operations; design examples; and finance.
Quantum Complex Minkowski Space
Grzegorz Jakimowicz; Anatol Odzijewicz
2005-05-06T23:59:59.000Z
The complex Minkowski phase space has the physical interpretation of the phase space of the scalar massive conformal particle. The aim of the paper is the construction and investigation of the quantum complex Minkowski space.
In Outer Space without a Space Suit?
Alexander Bolonkin
2008-06-24T23:59:59.000Z
The author proposes and investigates his old idea - a living human in space without the encumbrance of a complex space suit. Only in this condition can biological humanity seriously attempt to colonize space because all planets of Solar system (except the Earth) do not have suitable atmospheres. Aside from the issue of temperature, a suitable partial pressure of oxygen is lacking. In this case the main problem is how to satiate human blood with oxygen and delete carbonic acid gas (carbon dioxide). The proposed system would enable a person to function in outer space without a space suit and, for a long time, without food. That is useful also in the Earth for sustaining working men in an otherwise deadly atmosphere laden with lethal particulates (in case of nuclear, chemical or biological war), in underground confined spaces without fresh air, under water or a top high mountains above a height that can sustain respiration.
McManus, Dr. Hugh
Final Report of SSPARC: the Space Systems, Policy, and Architecture Research Consortium (Thrust II and III)
Waliser, Duane E.
1 Space Shuttle Program Status John Casper Associate Manager Space Shuttle Program September 13, 2010 NAC Space Operations Committee #12;2 Operations #12;3 Flown Manifest March 2009 May 2010 #12, 2010 · 132nd Space Shuttle mission · 32nd Flight of Atlantis (120,650,907 statute miles) · 294 Total
Space Complexity Algorithms & Complexity
Way, Andy
Space Complexity Algorithms & Complexity Space Complexity Nicolas Stroppa Patrik Lambert - plambert@computing.dcu.ie CA313@Dublin City University. 2008-2009. December 4, 2008 #12;Space Complexity Hierarchy of problems #12;Space Complexity NP-intermediate Languages If P = NP, then are there languages which neither in P
Space Science and Applications
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
the first measurements of Earth's space radiation environment and the discovery of gamma-ray bursts. The majority of ISR-1 staff hold PhDs in Space Physics, Nuclear Physics, or...
Carbon Monoxide I n f o r m a t i o n f r o m Ve r m o n t
Hayden, Nancy J.
every 5 years. DO have your fuel-burning appliances -- including oil, gas or wood furnaces, gas water heaters, gas ranges and ovens, gas dryers, gas or kerosene space heaters, fireplaces and wood stoves avoid using an unvented gas or kerosene space heater, carefully follow the precautions that come
Ordered involutive operator spaces
Blecher, David P; Neal, Matthew; Werner, Wend
2007-01-01T23:59:59.000Z
This is a companion to recent papers of the authors; here we construct the `noncommutative Shilov boundary' of a (possibly nonunital) selfadjoint ordered space of Hilbert space operators. The morphisms in the universal property of the boundary preserve order. As an application, we consider `maximal' and `minimal' unitizations of such ordered operator spaces.
Rathbun, Julie A.
SPACE RESOURCES ROUNDTABLE IX Colorado School of Mines October 25-27, 2007 http://www.ISRUinfo.com Sponsored by: Colorado School of Mines Lunar and Planetary Institute Space Resources Roundtable, Inc. First Space Michael B. Duke, Colorado School of Mines Leslie Gertsch, University of Missouri-Rolla Alex
Conclusions Fractionated Space Systems
de Weck, Olivier L.
Conclusions Fractionated Space Systems There is a growing interest in fractionated space system design. Fractionated space systems are inherently flexible and modular. There are many key technologies of flexibility serves as a source of motivation for system designers to embed flexibility into a system design (i
WILLIS WL; AHRENDT MR
2009-08-11T23:59:59.000Z
Since this report was originally issued in 2001, several options proposed for increasing double-shell tank (DST) storage space were implemented or are in the process of implementation. Changes to the single-shell tank (SST) waste retrieval schedule, completion of DST space saving options, and the DST space saving options in progress have delayed the projected shortfall of DST storage space from the 2007-2011 to the 2018-2025 timeframe (ORP-11242, River Protection Project System Plan). This report reevaluates options from Rev. 0 and includes evaluations of new options for alleviating projected restrictions on SST waste retrieval beginning in 2018 because of the lack of DST storage space.
Kant's hidden ontology of space
Messina, James Anthony
2011-01-01T23:59:59.000Z
Verlag, Cassam, Quassim. “Space and Objective Experience,”John. World Enough and Space-Time (Cambridge, Massachusetts:On the Perception of Space [and Time],” in The Cambridge
UCL DEPARTMENT OF SPACE & CLIMATE PHYSICS SPACE PLASMA PHYSICS GROUP
UCL DEPARTMENT OF SPACE & CLIMATE PHYSICS SPACE PLASMA PHYSICS GROUP 18th September 2012 STFC 2012 #12;UCL DEPARTMENT OF SPACE & CLIMATE PHYSICS SPACE PLASMA PHYSICS GROUP 18th September 2012 STFC · Conclusion #12;UCL DEPARTMENT OF SPACE & CLIMATE PHYSICS SPACE PLASMA PHYSICS GROUP 18th September 2012 STFC
Space Systems Finland 1 Deployment in the Space Sector
Southampton, University of
© Space Systems Finland 1 Deployment in the Space Sector #12;© Space Systems Finland 2 SW Constraints Design Requirements User Requirements SW Requirements #12;© Space Systems Finland 3 The space, but there is no viable alternative · Many requirements are not testable #12;© Space Systems Finland 4 SSF OBJECTIVES
space for science, enterprise and environment Bringing Space Into School
space for science, enterprise and environment Bringing Space Into School Science The National Space Education Initiative #12;space for science, enterprise and environment National Space Education Initiative the consultations · Recommendations of the report #12;space for science, enterprise and environment Background
Ran Gelles; Tal Mor
2007-11-25T23:59:59.000Z
Theoretical quantum key distribution (QKD) protocols commonly rely on the use of qubits (quantum bits). In reality, however, due to practical limitations, the legitimate users are forced to employ a larger quantum (Hilbert) space, say a quhexit (quantum six-dimensional) space, or even a much larger quantum Hilbert space. Various specific attacks exploit of these limitations. Although security can still be proved in some very special cases, a general framework that considers such realistic QKD protocols, as well as} attacks on such protocols, is still missing. We describe a general method of attacking realistic QKD protocols, which we call the `quantum-space attack'. The description is based on assessing the enlarged quantum space actually used by a protocol, the `quantum space of the protocol'. We demonstrate these new methods by classifying various (known) recent attacks against several QKD schemes, and by analyzing a novel attack on interferometry-based QKD.
Yousef Ghazi-Tabatabai
2012-11-19T23:59:59.000Z
While Quantum Gravity remains elusive and Quantum Field Theory retains the interpretational difficulties of Quantum Mechanics, we have introduced an alternate approach to the unification of particles, fields, space and time, suggesting that the concept of matter as space without time provides a framework which unifies matter with spacetime and in which we anticipate the development of complete theories (ideally a single unified theory) describing observed 'particles, charges, fields and forces' solely with the geometry of our matter-space-time universe.
Alexander Bolonkin
2008-03-02T23:59:59.000Z
On 4 January 2007 the author published the article Wireless Transfer of Electricity in Outer Space in http://arxiv.org wherein he offered and researched a new revolutionary method of transferring electric energy in space. In that same article, he offered a new engine which produces a large thrust without throwing away large amounts of reaction mass (unlike the conventional rocket engine). In the current article, the author develops the theory of this kind of impulse engine and computes a sample project which shows the big possibilities opened by this new AB-Space Engine. The AB-Space Engine gets the energy from ground-mounted power; a planet electric station can transfer electricity up to 1000 millions (and more) of kilometers by plasma wires. Author shows that AB-Space Engine can produce thrust of 10 tons (and more). That can accelerate a space ship to some thousands of kilometers/second. AB-Space Engine has a staggering specific impulse owing to the very small mass expended. The AB-Space Engine reacts not by expulsion of its own mass (unlike rocket engine) but against the mass of its planet of origin (located perhaps a thousand of millions of kilometers away) through the magnetic field of its plasma cable. For creating this plasma cable the AB-Space Engine spends only some kg of hydrogen.
Newtonian Lorentz Metric Spaces
Costea, Serban
2011-01-01T23:59:59.000Z
This paper studies Newtonian Sobolev-Lorentz spaces. We prove that these spaces are Banach. We also study the global p,q-capacity and the p,q-modulus of families of rectifiable curves. Under some additional assumptions (that is, the space carries a doubling measure and a weak Poincare inequality) and some restrictions on q, we show that the Lipschitz functions are dense in those spaces. Moreover, in the same setting we also show that the p,q-capacity is Choquet provided that q is strictly greater than 1. We provide a counterexample for the density result of Lipschitz functions in the Euclidean setting.
Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]
Commercial Buildings Energy Consumption Survey: Energy End-Use Consumption Tables Total Space Heat- ing Cool- ing Venti- lation Water Heat- ing Light- ing Cook- ing Refrig- eration...
Multimegawatt space power reactors
Dearien, J.A.; Whitbeck, J.F.
1989-01-01T23:59:59.000Z
In response to the need of the Strategic Defense Initiative (SDI) and long range space exploration and extra-terrestrial basing by the National Air and Space Administration (NASA), concepts for nuclear power systems in the multi-megawatt levels are being designed and evaluated. The requirements for these power systems are being driven primarily by the need to minimize weight and maximize safety and reliability. This paper will discuss the present requirements for space based advanced power systems, technological issues associated with the development of these advanced nuclear power systems, and some of the concepts proposed for generating large amounts of power in space. 31 figs.
A. M. Polyakov
2006-02-01T23:59:59.000Z
These notes, based on the remarks made at the 23 Solvay Conference, collect several speculative ideas concerning gauge/ strings duality, de Sitter spaces, dimensionality and the cosmological constant.
Nudds, Matthew
the account I give (in section 1) of what sounds are and (in section 2) of the role of space in auditory perception....
Gasoline and Diesel Fuel Update (EIA)
Revised: December, 2008 Total Space Heat- ing Cool- ing Venti- lation Water Heat- ing Light- ing Cook- ing Refrig- eration Office Equip- ment Com- puters Other All Buildings...
Balcomb, J.D.
1980-01-01T23:59:59.000Z
An overview of passive solar space heating is presented indicating trends in design, new developments, performance measures, analytical design aids, and monitored building results.
National Aeronautics and Space Administration Space Shuttle
in diameter and 60 feet long; large enough to fit a school bus or 50,000 pounds of payload. The shuttle major safety improvement to the space shuttle fleet includes the expanded use of enhanced imaging of the orbiter, the camera is similar to a standard 35mm model and snaps a series of photos as the tank separates
SPACE TECHNOLOGY Actual Estimate
SPACE TECHNOLOGY TECH-1 Actual Estimate Budget Authority (in $ millions) FY 2011 FY 2012 FY 2013 FY.7 247.0 Exploration Technology Development 144.6 189.9 202.0 215.5 215.7 214.5 216.5 Notional SPACE TECHNOLOGY OVERVIEW .............................. TECH- 2 SBIR AND STTR
Buden, D.
1990-10-01T23:59:59.000Z
Nuclear technology offers many advantages in an expanded solar system space exploration program. These cover a range of possible applications such as power for spacecraft, lunar and planetary surfaces, and electric propulsion; rocket propulsion for lunar and Mars vehicles; space radiation protection; water and sewage treatment; space mining; process heat; medical isotopes; and self-luminous systems. In addition, space offers opportunities to perform scientific research and develop systems that can solve problems here on Earth. These might include fusion and antimatter research, using the Moon as a source of helium-3 fusion fuel, and manufacturing perfect fusion targets. In addition, nuclear technologies can be used to reduce risk and costs of the Space Exploration Initiative. 1 fig.
Space-QUEST: Experiments with quantum entanglement in space
Rupert Ursin; Thomas Jennewein; Johannes Kofler; Josep M. Perdigues; Luigi Cacciapuoti; Clovis J. de Matos; Markus Aspelmeyer; Alejandra Valencia; Thomas Scheidl; Alessandro Fedrizzi; Antonio Acin; Cesare Barbieri; Giuseppe Bianco; Caslav Brukner; Jose Capmany; Sergio Cova; Dirk Giggenbach; Walter Leeb; Robert H. Hadfield; Raymond Laflamme; Norbert Lutkenhaus; Gerard Milburn; Momtchil Peev; Timothy Ralph; John Rarity; Renato Renner; Etienne Samain; Nikolaos Solomos; Wolfgang Tittel; Juan P. Torres; Morio Toyoshima; Arturo Ortigosa-Blanch; Valerio Pruneri; Paolo Villoresi; Ian Walmsley; Gregor Weihs; Harald Weinfurter; Marek Zukowski; Anton Zeilinger
2008-06-05T23:59:59.000Z
The European Space Agency (ESA) has supported a range of studies in the field of quantum physics and quantum information science in space for several years, and consequently we have submitted the mission proposal Space-QUEST (Quantum Entanglement for Space Experiments) to the European Life and Physical Sciences in Space Program. We propose to perform space-to-ground quantum communication tests from the International Space Station (ISS). We present the proposed experiments in space as well as the design of a space based quantum communication payload.
Hartford Neighborhood Healthy Homes Project (NeHHP) Checklist Definitions
Oliver, Douglas L.
@uchc.edu DRAFT 11/13/2009 Combustion Appliance (nonelectric) that is not vented: Some combustion appliances, such as gas ranges and unvented space heaters, and other products (gas logs and charcoal stoves) discharge combustion products directly into the living area. Combustion byproducts can include strong
Improving Home Indoor Air Quality There are three general ways of improving air quality in
Lightsey, Glenn
of back-drafting from combustion appliances such as gas water heaters that might be located in the garage they can do damage. Do not use unvented fossil-fuel-based space heaters, e.g., kerosene heaters, under any faulty gas wall heaters and other combustion appliances. Consider hiring a qualified professional to test
Flexible pipe crawling device having articulated two axis coupling
Zollinger, W.T.
1994-05-10T23:59:59.000Z
An apparatus is described for moving through the linear and non-linear segments of piping systems. The apparatus comprises a front leg assembly, a rear leg assembly, a mechanism for extension and retraction of the front and rear leg assembles with respect to each other, such as an air cylinder, and a pivoting joint. One end of the flexible joint attaches to the front leg assembly and the other end to the air cylinder, which is also connected to the rear leg assembly. The air cylinder allows the front and rear leg assemblies to progress through a pipe in inchworm' fashion, while the joint provides the flexibility necessary for the pipe crawler to negotiate non-linear piping segments. The flexible connecting joint is coupled with a spring-force suspension system that urges alignment of the front and rear leg assemblies with respect to each other. The joint and suspension system cooperate to provide a firm yet flexible connection between the front and rear leg assemblies to allow the pivoting of one with respect to the other while moving around a non-linear pipe segment, but restoring proper alignment coming out of the pipe bend. 4 figures.
Flexible pipe crawling device having articulated two axis coupling
Zollinger, William T. (Martinez, GA)
1994-01-01T23:59:59.000Z
An apparatus for moving through the linear and non-linear segments of piping systems. The apparatus comprises a front leg assembly, a rear leg assembly, a mechanism for extension and retraction of the front and rear leg assembles with respect to each other, such as an air cylinder, and a pivoting joint. One end of the flexible joint attaches to the front leg assembly and the other end to the air cylinder, which is also connected to the rear leg assembly. The air cylinder allows the front and rear leg assemblies to progress through a pipe in "inchworm" fashion, while the joint provides the flexibility necessary for the pipe crawler to negotiate non-linear piping segments. The flexible connecting joint is coupled with a spring-force suspension system that urges alignment of the front and rear leg assemblies with respect to each other. The joint and suspension system cooperate to provide a firm yet flexible connection between the front and rear leg assemblies to allow the pivoting of one with respect to the other while moving around a non-linear pipe segment, but restoring proper alignment coming out of the pipe bend.
Overview of Space Business Space & Integrated Defense Systems
Overview of Space Business Space & Integrated Defense Systems Mitsubishi Corporation August 26 in Rio de Janeiro and Belo Horizonte #12;MC's Space Business Involved with aerospace business more than 40 years, covering civil/commercial space business, defense related space business and defense
Spinorial space-time and privileged space direction (I)
Paris-Sud XI, Université de
Spinorial space-time and privileged space direction (I) Luis Gonzalez-Mestres Abstract Contrary of a privileged space direction are not strange phenomena from the point of view of fundamental space-time geometry. As already emphasized in our previous papers on the subject, the spinorial space-time we
Space Robotic Capabilities David Kortenkamp (NASA Johnson Space Center)
Kortenkamp, David
Johnson Space Center Space Robotic Capabilities David Kortenkamp (NASA Johnson Space Center) Liam) David Wettergreen (Carnegie Mellon University) Dan Clancy (NASA Ames) #12;Johnson Space Center 12/18/2001 Space Robotics State-of-Art 2 ! Motivation Science Objectives Mission Concepts Robots Human
"Space Station" Theme: Learning to Work, and Live, in Space
Mathis, Wayne N.
"Space Station" IMAX Film Theme: Learning to Work, and Live, in Space The educational value of NASM visit and afterward. See the "Alignment with Standards" table for details regarding how "Space Station in the "Space Station" program: Â· How astronauts train Â· What it is like to live and work in Space aboard
3742SPACE ISSUES AND RESOLUTION PROCEDURE Space issue or
Page 1 3742SPACE ISSUES AND RESOLUTION PROCEDURE Space issue or conflict identified Do any of the strategies mitigate issue/conflict Complete Conflict Resolution Form Submit form to Space Management Office Space Management Office conduct issue/conflict analysis Space Management Office document possible
Herman, Robert A.
1968-01-01T23:59:59.000Z
. PRELIMINARIES 1 CHAPTER II . SFACBS IN WHICH SEQUENCES SUFFICE 6 CHAPTER III . QUOTIENTS OF SEPARABLE METRIC SPACES Ik CHAPTER IV. GENERAL QUOTIENT SPACES 25 CHAPTER V. CLOSED QUOTIENT MAPS 35 CHAPTER VI. OPEN QUOTIENT MAPS 50 CHAPTER VII. OPEN AND CLOSED... QUOTIENT MAPS 55 CHAPTER VIII. ANOTHER RESULT 6l BIBLIOGRAPHY 65 CHAPTER I. PRELIMINARIES We begin by stating some basic definitions and theorems. Definition 1 . 1 ; Let f be a function from a topological space X onto a set Y. Then the quotient...
National Aeronautics and Space Administration Marshall Space Flight Center
and Services marshall Propulsion Systems Space Transportation/ Launch Vehicles Space Systems Scientific. Advanced propulsion and power research and development including high-power electric propulsion, nuclear thermal propulsion, space nuclear power systems, nuclear surface power systems, and propellant
Martínez-de-Albéniz, V.; Roels, G.
2007-01-01T23:59:59.000Z
the changes in supplier i’s wholesale price and pro?t, i =space despite their lower wholesale prices. Using a di?erentImpact of Manufacturers’ Wholesale Prices a on a Retailer’s
Özkâr, Mine, 1976-
1999-01-01T23:59:59.000Z
This thesis proposes a framework to articulate certain criteria in creative spatial productions such as architecture. I discuss that a conformist and unquestioning adaptation to conventional space conceptions limits ...
astronautics & space technology
Rohs, Remo
and mecha- nisms, thermal control, power systems, launch systems and facilities. (Duplicates credit · flowcharts Astronautical engineers design, build and operate space vehicles used in exploration in areas such as electric propulsion, plasma physics, heliospheric structure, fundamental processes
Reconstruction in Fourier space
Burden, Angela; Howlett, Cullan
2015-01-01T23:59:59.000Z
We present a fast iterative FFT-based reconstruction algorithm that allows for non- parallel redshift-space distortions (RSD). We test our algorithm on both N-body dark matter simulations and mock distributions of galaxies designed to replicate galaxy survey conditions. We compare solenoidal and irrotational components of the redshift distortion and show that an approximation of this distortion leads to a better estimate of the real-space potential (and therefore faster convergence) than ignoring the RSD when estimating the displacement field. Our iterative reconstruction scheme converges in two iterations for the mock samples corresponding to BOSS CMASS DR11 when we start with an approximation of the RSD. The scheme takes six iterations when the initial estimate, measured from the redshift-space overdensity, has no RSD correction. Slower convergence would be expected for surveys covering a larger angle on the sky. We show that this FFT based method provides a better estimate of the real space displacement fi...
Shanguang Tan
2007-04-23T23:59:59.000Z
A new kind of numbers called Hyper Space Complex Numbers and its algebras are defined and proved. It is with good properties as the classic Complex Numbers, such as expressed in coordinates, triangular and exponent forms and following the associative and commutative laws of addition and multiplication. So the classic Complex Number is developed from in complex plane with two dimensions to in complex space with N dimensions and the number system is enlarged also.
Space-time symmetries of noncommutative spaces
Calmet, Xavier [Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599 (United States)
2005-04-15T23:59:59.000Z
We define a noncommutative Lorentz symmetry for canonical noncommutative spaces. The noncommutative vector fields and the derivatives transform under a deformed Lorentz transformation. We show that the star product is invariant under noncommutative Lorentz transformations. We then apply our idea to the case of actions obtained by expanding the star product and the fields taken in the enveloping algebra via the Seiberg-Witten maps and verify that these actions are invariant under these new noncommutative Lorentz transformations. We finally consider general coordinate transformations and show that the metric is undeformed.
Space Physics at UNH FROM THE DAWN OF SPACE EXPLORATION, UNH space scientists, engineers, and
Pringle, James "Jamie"
Space Physics at UNH FROM THE DAWN OF SPACE EXPLORATION, UNH space scientists, engineers, and students in the Institute for the Study of Earth, Oceans, and Space (EOS) have worked on mission design and modeling. The Space Science Center, housed at EOS, is engaged in research and graduate education in all
China's Space Robotic Arms Programs
POLLPETER, Kevin
2013-01-01T23:59:59.000Z
Blog, “Gen. Chilton on a Space Weapons Treaty,” October 30,archive/2076/general-chilton-on-a-space-weapons-treaty. 31on the military use of space, see Kevin Pollpeter, “China’s
Space Instrument Realization (ISR-5)
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
5 Space Instrument Realization Providing expertise to support the design and fabrication of space-based custom instrumentation Contacts Group Leader Amy Regan Email Staff...
China's Space Robotic Arms Programs
POLLPETER, Kevin
2013-01-01T23:59:59.000Z
2013 China’s Space Robotic Arm Programs Kevin POLLPETERdebris observation and space robotic arm technologies. Thelikely equipped with a robotic arm, grappling the target
M. A. Zubkov
2005-11-02T23:59:59.000Z
We suggest to use "minimal" choice of quantum gravity theory, that is the quantum field theory, in which space-time is seen as Riemannian space and metric (or vierbein field) is the dynamical variable. We then suggest to use the simplest acceptable action, that is the squared curvature action. The correspondent model is renormalizable, has the correct classical limit without matter and can be explored using Euclidian path integral formalism. In order to get nonperturbative results one has to put this model on the lattice. While doing so serious problems with measure over dynamical variables are encountered, which were not solved until present. We suggest to solve them using the representation of Riemannian space as a limiting case of Riemann - Cartan space, where the Poincare group connection plays the role of dynamical variable. We construct manifestly gauge invariant discretization of Riemann - Cartan space. Lattice realization of Poincare gauge transformation naturally acts on the dynamical variables of the constructed discretization. There exists local measure invariant under this gauge transformation, which could be used as a basic element of lattice path integral methods. The correspondent lattice model appears to be useful for numerical simulations.
Broader source: Energy.gov [DOE]
This webinar, held on February 12, 2015, focused on methods to design and build roof and wall systems for high performance homes that optimize energy and moisture performance.
Broader source: Energy.gov [DOE]
This webinar, held on February 12, 2015, focused on methods to design and build roof and wall systems for high performance homes that optimize energy and moisture performance.
From Noncommutative Phase Space to Hilbert Space
Muthukumar, B. [Saha Institute of Nuclear Physics, 1/AF, Bidhan nagar, Kolkata-700 064 (India)
2007-10-03T23:59:59.000Z
In the Hamiltonian formulation, classical mechanics employs the commutative algebra of functions that are defined on phase space a point of which could be represented using Dirac delta distributions. In the absence of such a concrete existence of the notion of point in the quantum domain, we show how the quantum mechanical formalism emerges by replacing the commutative algebra by a noncommutative algebra of functions and introducing the quantum condition. The noncommutativity is achieved by deforming the product of two functions and by introducing the Moyal brackets, the basic Moyal brackets between two spatial coordinates and between position and momentum coordinates being noncommutative. The only other input we make use of is the quantum condition which is motivated from its classical analogue--the square of Dirac delta distributions.
3740SPACE REPURPOSING PROCEDURE Client identifies
Page 1 3740SPACE REPURPOSING PROCEDURE Client identifies space repurposing requirement Client completes space request form Submit space request form to Space Management Office Space Management Office acknowledge reciept Is space form completed accurately Space Management Office conduct space analysis Does
Space Science and Applications
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over Our Instagram Secretary Moniz9MorganYouofSolvingexplore correlation613Space451 Space
Policies on Japan's Space Industry
with space emerging countries 3. Step up leading-edge science and technology as an innovation engine (1Policies on Japan's Space Industry Shuichi Kaneko Director, Space Industry Office Manufacturing Industries Bureau Ministry of Economy, Trade and Industry (METI) #12;Japan's Space Policy is based
The NASA Food Commercial Space
Lin, Zhiqun
The NASA Food Technology Commercial Space Center and How Your Company Can Participate space Commercial Space Center Iowa State University 2901 South Loop Drive, Suite 3700 Ames, IA 50010-8632 Phone Manager NASA Food Technology Commercial Space Center Iowa State University 2901 South Loop Drive, Suite
Representation of noncommutative phase space
Kang Li; Jianhua Wang; Chiyi Chen
2005-08-16T23:59:59.000Z
The representations of the algebra of coordinates and momenta of noncommutative phase space are given. We study, as an example, the harmonic oscillator in noncommutative space of any dimension. Finally the map of Sch$\\ddot{o}$dinger equation from noncommutative space to commutative space is obtained.
Orbit Spaces in Superconductivity
Vittorino Talamini
2006-07-30T23:59:59.000Z
In the framework of Landau theory of phase transitions one is interested to describe all the possible low symmetry ``superconducting'' phases allowed for a given superconductor crystal and to determine the conditions under which this crystal undergoes a phase transition. These problems are best described and analyzed in the orbit space of the high symmetry group of the ``normal, non-superconducting'' phase of the crystal. In this article it is worked out a simple example concerning superconductivity, that shows the P-matrix method to determine the equations and inequalities defining the orbit space and its stratification. This approach is of general validity and can be used in all physical problems that make use of invariant functions, as long as the symmetry group is compact.
Ramaty, R.; Cline, T.L.; Ormes, J.F.
1987-06-01T23:59:59.000Z
The papers presented cover a broad segment of space research and are an acknowledgement of the personal involvement of Frank McDonald in many of these efforts. The totality of the papers were chosen so as to sample the scientific areas influenced by him in a significant manner. Three broad areas are covered: particles and fields of the solar system; cosmic ray astrophysics; and gamma ray, x ray, and infrared astronomics.
Haesen, S; Haesen, Stefan; Verstraelen, Leopold
2004-01-01T23:59:59.000Z
Due to the growing interest in embeddings of space-time in higher-dimensional spaces we consider a specific type of embedding. After proving an inequality between intrinsically defined curvature invariants and the squared mean curvature, we extend the notion of ideal embeddings from Riemannian geometry to the indefinite case. Ideal embeddings are such that the embedded manifold receives the least amount of tension from the surrounding space. Then it is shown that the de Sitter spaces, a Robertson-Walker space-time and some anisotropic perfect fluid metrics can be ideally embedded in a five-dimensional pseudo-Euclidean space.
Stefan Haesen; Leopold Verstraelen
2004-04-01T23:59:59.000Z
Due to the growing interest in embeddings of space-time in higher-dimensional spaces we consider a specific type of embedding. After proving an inequality between intrinsically defined curvature invariants and the squared mean curvature, we extend the notion of ideal embeddings from Riemannian geometry to the indefinite case. Ideal embeddings are such that the embedded manifold receives the least amount of tension from the surrounding space. Then it is shown that the de Sitter spaces, a Robertson-Walker space-time and some anisotropic perfect fluid metrics can be ideally embedded in a five-dimensional pseudo-Euclidean space.
research in space Facilities on the International Space Station
research in space Facilities on the International Space Station #12;1 #12;2 Table of Contents and Materials Research: 41 Fluid Physics, Crystal Growth, and External Test Beds Earth and Space Science (External and Internal): 51 Radiation, Thermal, Solar, and Geophysics ISS Control Centers 59 To Learn More
INTERNATIONAL SPACE EXPLORATION COORDINATION GROUP
space exploration infrastructure standards facilitating interoperability through an international with relevant existing international working groups/ organisations. Â· Preparation and Organization of a WS1 INTERNATIONAL SPACE EXPLORATION COORDINATION GROUP WORKPLAN Update following 3rd ISECG Meeting
Symplectic space and orthogonal space of n qubits
Jian-Wei Xu
2010-11-14T23:59:59.000Z
In the Hilbert space of n qubits, we introduce the symplectic space (n odd) and the orthogonal space (n even) via the spin-flip operator. Under this mathematical structure we discuss some properties of n qubits, including homomorphically mapping the local operations of n qubits into the symplectic group or orthogonal group, and prove that the generalized ``magic basis'' is just the bi-orthonormal basis (that is, the orthonormal basis of both Hilbert space and the orthogonal space ). Finally, an example is given to discuss the application in physics of this mathematical structure.
Pan, Ernie
Electromagnetic fields induced by a point source in a uniaxial multiferroic full-space, half-space, and bimaterial space X. Wang and E. Pana) Department of Civil Engineering and Department of Applied Mathematics multiferroic full-space, half-space, and bimaterial space. While for the bimaterial space case the interface
Lutzer, David J.
The -space Property in Monotonically Normal Spaces and GO-Spaces by Harold R. Bennett, Texas Tech-8795 Abstract In this paper we examine the role of the -space property (equivalently of the MCM-property) in generalized ordered (GO-)spaces and, more generally, in monotonically normal spaces. We show that a GO-space
National Aeronautics and Space Administration
Christian, Eric
and Contracting Processes. Developing adequate cost estimates, managing program costs, and ensuring that NASA. · Transitioning from the Space Shuttle to the Next Generation of Space Vehicles. Balancing schedule and resource of the complexity of balancing the human capital, equipment, and property needs of the Space Shuttle Program
Lockwood, Mike
), The Solar Stormwatch CME catalogue: Results from the first space weather citizen science project, Space is properly cited. The Solar Stormwatch CME catalogue: Results from the first space weather citizen science citizen science project, the aim of which is to identify and track coronal mass ejections (CMEs) observed
1978-01-01T23:59:59.000Z
WIMTEft 3 EDITOR'S SPACE 4 PEN PALS 4 COMMUNICATIONS 5 SW IS GAINING 5 BIOS 6SW SERIAL CHAPTFR I 8 STAR WARS PflFM 8 A SONG FOR THF UNBORN 9 PIONFFR SHORT STORY 70WITHINTHFFORHF 70 LOOKING BACK 77 RATTIF EPIC PflFM PART 1 12 BEHIND.... Follow me." Herb led him through the woods. Then he pulled away the branches and debris. When the man saw it his eyebrows went up in surprise. "Oh no, don't tell me we got another ship from Earth. I wish they'd quit sending us their junk." 9 WITHIN...
European Space Power Conference
Bents, D.J.; Kohout, L.L.; Mckissock, B.I.; Rodriguez, C.D.; Withrow, C.A.; Colozza, A.; Hanlon, J.C.; Schmitz, P.C.
1991-01-01T23:59:59.000Z
To support the Space Exploration Initiative (SEI), a study was performed to investigate power system alternatives for the rover vehicles and servicers that were subsequently generated for each of these rovers and servicers, candidate power sources incorporating various power generation and energy storage technologies were identified. The technologies were those believed most appropriate to the SEI missions, and included solar, electrochemical, and isotope systems. The candidates were characterized with respect to system mass, deployed area, and volume. For each of the missions a preliminary selection was made. Results of this study depict the available power sources in light of mission requirements as they are currently defined.
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041clothAdvanced Materials Advanced Materials Find More Like3.3BenefitsSearch ThisSpace Committee
Noncommutative space-time models
N. A. Gromov; V. V. Kuratov
2005-07-01T23:59:59.000Z
The FRT quantum Euclidean spaces $O_q^N$ are formulated in terms of Cartesian generators. The quantum analogs of N-dimensional Cayley-Klein spaces are obtained by contractions and analytical continuations. Noncommutative constant curvature spaces are introduced as a spheres in the quantum Cayley-Klein spaces. For N=5 part of them are interpreted as the noncommutative analogs of (1+3) space-time models. As a result the quantum (anti) de Sitter, Newton, Galilei kinematics with the fundamental length and the fundamental time are suggested.
Alexander Bolonkin
2007-01-08T23:59:59.000Z
Theory and computations are provided for building of optimal (minimum weight) solid space towers (mast) up to one hundred kilometers in height. These towers can be used for tourism; scientific observation of space, observation of the Earth surface, weather and upper atmosphere experiment, and for radio, television, and communication transmissions. These towers can also be used to launch spaceships and Earth satellites. These macroprojects are not expensive. They require strong hard material (steel). Towers can be built using present technology. Towers can be used (for tourism, communication, etc.) during the construction process and provide self-financing for further construction. The tower design does not require human work at high altitudes; the tower is separated into sections; all construction can be done at the Earth surface. The transport system for a tower consists of a small engine (used only for friction compensation) located at the Earth surface. Problems involving security, control, repair, and stability of the proposed towers are addressed in other cited publications.
Structure of Noncommutative Fock space
Si-Cong Jing; Qiu-Yu Liu; Tu-Nan Ruan
2005-05-05T23:59:59.000Z
The structure of the state-vector space of identical bosons in noncommutative spaces is investigated. To maintain Bose-Einstein statistics the commutation relations of phase space variables should simultaneously include coordinate-coordinate non-commutativity and momentum-momentum non-commutativity, which lead to noncommutative Fock space. By this we mean that creation and annihilation operators corresponding to different degrees of freedom of the bosons do not commute each other. The main character of the noncommutative Fock space is there are no ordinary number representations because of the non-commutativity between different number operators. However, eigenvectors of several pairs of commuting Hermitian operators are obtained which can also be served as bases in this Fock space. As a simple example, an explicit form of two-dimensional canonical coherent state in this noncommutative Fock space is constructed and its properties are discussed.
David W. Essex
2015-01-25T23:59:59.000Z
A new model for space and matter is obtained by joining every pair of point charges in the observable universe by an ethereal string. Positive gravitational potential energy in each string gives an attractive gravitational force due to the action of an energy conservation constraint. Newton's laws of motion are derived and inertia is explained in accordance with Mach's principle. The Machian string model gives a surprisingly simple way to understand the expansion history of the Universe. The decelerating expansion in the radiation era and the matter era is explained without using General Relativity and the transition from deceleration to acceleration is explained without the need to introduce a separate 'dark energy' component. The interaction between Machian strings gives a physical model for modified Newtonian dynamics (MOND) and is therefore an alternative to 'dark matter'.
Essex, David W
2015-01-01T23:59:59.000Z
A new model for space and matter is obtained by joining every pair of point charges in the observable universe by an ethereal string. Positive gravitational potential energy in each string gives an attractive gravitational force due to the action of an energy conservation constraint. Newton's laws of motion are derived and inertia is explained in accordance with Mach's principle. The Machian string model gives a surprisingly simple way to understand the expansion history of the Universe. The decelerating expansion in the radiation era and the matter era is explained without using General Relativity and the transition from deceleration to acceleration is explained without the need to introduce a separate 'dark energy' component. The interaction between Machian strings gives a physical model for modified Newtonian dynamics (MOND) and is therefore an alternative to 'dark matter'.
Constrained space camera assembly
Heckendorn, Frank M. (Aiken, SC); Anderson, Erin K. (Augusta, GA); Robinson, Casandra W. (Trenton, SC); Haynes, Harriet B. (Aiken, SC)
1999-01-01T23:59:59.000Z
A constrained space camera assembly which is intended to be lowered through a hole into a tank, a borehole or another cavity. The assembly includes a generally cylindrical chamber comprising a head and a body and a wiring-carrying conduit extending from the chamber. Means are included in the chamber for rotating the body about the head without breaking an airtight seal formed therebetween. The assembly may be pressurized and accompanied with a pressure sensing means for sensing if a breach has occurred in the assembly. In one embodiment, two cameras, separated from their respective lenses, are installed on a mounting apparatus disposed in the chamber. The mounting apparatus includes means allowing both longitudinal and lateral movement of the cameras. Moving the cameras longitudinally focuses the cameras, and moving the cameras laterally away from one another effectively converges the cameras so that close objects can be viewed. The assembly further includes means for moving lenses of different magnification forward of the cameras.
Veeravalli, Venugopal
Introduction Space Time Codes Space Time Coding with Feedback New Thoughts Summary Space 2007 #12;Introduction Space Time Codes Space Time Coding with Feedback New Thoughts Summary MIMO: Diversity vs Multiplexing Multiplexing Diversity Pictures taken from lectures notes on Space Time Coding
Cohen, Ronald C.
.5% Flammability H2S removed from space Secure space Conduct debriefing Entrants Name Signature Time In Time Out Attendants)____________________________________ Tools, equipment and personnel removed from space Secure space ALTERNATE ENTRY Fill out
Yong Seung Cho; Soon-Tae Hong
2007-06-01T23:59:59.000Z
We consider the path space of a curved manifold on which a point particle is introduced in a conservative physical system with constant total energy to formulate its action functional and geodesic equation together with breaks on the path. The second variation of the action functional is exploited to yield the geodesic deviation equation and to discuss the Jacobi fields on the curved manifold. We investigate the topology of the path space using the action functional on it and its physical meaning by defining the gradient of the action functional, the space of bounded flow energy solutions and the moduli space associated with the critical points of the action functional. We also consider the particle motion on the $n$-sphere $S^{n}$ in the conservative physical system to discuss explicitly the moduli space of the path space and the corresponding homology groups.
Entropic Gravity in Rindler Space
Edi Halyo
2011-04-13T23:59:59.000Z
We show that Rindler horizons are entropic screens and gravity is an entropic force in Rindler space by deriving the Verlinde entropy formula from the focusing of light due to a mass close to the horizon. Consequently, gravity is also entropic in the near horizon regions of Schwarzschild and de Sitter space-times. In different limits, the entropic nature of gravity in Rindler space leads to the Bekenstein entropy bound and the uncertainty principle.
Cotta, R.C.; Gainer, J.S.; Hewett, J.L.; Rizzo, T.G.; /SLAC
2010-08-26T23:59:59.000Z
We present a summary of recent results obtained from a scan of the 19-dimensional parameter space of the pMSSM and its implications for dark matter searches. We have generated a large set of points in parameter space (which we call 'models') for the 19-parameter CP-conserving pMSSM, where MFV has been assumed. We subjected these models to numerous experimental and theoretical constraints to obtain a set of {approx}68 K models which are consistent with existing data. We attempted to be somewhat conservative in our implementation of these constraints; in particular we only demanded that the relic density of the LSP not be greater than the measured value of {Omega}H{sup 2} for non-baryonic dark matter, rather than assuming that the LSP must account for the entire observed relic density. Examining the properties of the neutralinos in these models, we find that many are relatively pure gauge eigenstates with Higgsinos being the most common, followed by Winos. The relative prevalence of Higgsino and Wino LSPs leads many of our models to have a chargino as nLSP, often with a relatively small mass splitting between this nLSP and the LSP; this has important consequences in both collider and astroparticle phenomenology. We find that, in general, the LSP in our models provides a relatively small ({approx} 4%) contribution to the dark matter, however there is a long tail to this distribution and a substantial number of models for which the LSP makes up all or most of the dark matter. Typically these neutralinos are mostly Binos. Examining the signatures of our models in direct and indirect dark matter detection experiments, we find a wide range of signatures for both cases. In particular, we find a much larger range of WIMP-nucleon cross sections than is found in any particular model of SUSY-breaking. As these cross sections also enter the regions of parameter space suggested by non-SUSY models, it appears that the discovery of WIMPs in direct detection experiments might not be sufficient to determine the correct model of the underlying physics. As a first look at the signatures of these models in indirect detection experiments, we examined whether our models could explain the PAMELA excess in the positron to electron ratio at high energies. We find that there are models which fit the PAMELA data rather well, and some of these have significantly smaller boost factors than generally assumed for a thermal relic. The study of the pMSSM presents exciting new possibilities for SUSY phenomenology. The next few years will hopefully see important discoveries both in colliders and in satellite or ground-based astrophysical experiments. It is important that we follow the data and not our existing prejudices; hopefully this sort of relatively model-independent approach to collider and astrophysical phenomenology can be useful in this regard.
Building America Webinar: Retrofitting Central Space Conditioning...
Strategies for Multifamily Buildings - Control strategies to improve hydronic space heating performance Building America Webinar: Retrofitting Central Space Conditioning...
Storage Space Request Aurora Facility
Ickert-Bond, Steffi
Storage Space Request Aurora Facility (1855 Marika) Department and Division: _______________________________________________________ Storage Contact: ____________________________________________________________ Name Phone and fax Fiscal Footage required: ______________ Brief Description of storage items
Radioisotopes: Energy for Space Exploration
Carpenter, Bob; Green, James; Bechtel, Ryan
2013-05-29T23:59:59.000Z
Through a strong partnership between the Energy Department's office of Nuclear Energy and NASA, Radioisotope Power Systems have been providing the energy for deep space exploration.
TANK SPACE ALTERNATIVES ANALYSIS REPORT
TURNER DA; KIRCH NW; WASHENFELDER DJ; SCHAUS PS; WODRICH DD; WIEGMAN SA
2010-04-27T23:59:59.000Z
This report addresses the projected shortfall of double-shell tank (DST) space starting in 2018. Using a multi-variant methodology, a total of eight new-term options and 17 long-term options for recovering DST space were evaluated. These include 11 options that were previously evaluated in RPP-7702, Tank Space Options Report (Rev. 1). Based on the results of this evaluation, two near-term and three long-term options have been identified as being sufficient to overcome the shortfall of DST space projected to occur between 2018 and 2025.
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
3 Space Data Systems Data collection and processing, information exploitation and delivery Contacts Group Leader Michael Cai Email Staff Operations Manager Nancy Graves Email...
Phase space quantum mechanics - Direct
Nasiri, S.; Sobouti, Y.; Taati, F. [Institute for Advanced Studies in Basic Sciences, Zanjan, 45195-1159 (Iran, Islamic Republic of) and Department of Physics, Zanjan University, Zanjan (Iran); Institute for Advanced Studies in Basic Sciences, Zanjan, 45195-1159 (Iran, Islamic Republic of); Institute for Advanced Studies in Basic Sciences, Zanjan, 45195-1159 (Iran, Islamic Republic of) and Department of Physics, University of Kurdistan, D-78457 Sanadaj (Iran)
2006-09-15T23:59:59.000Z
Conventional approach to quantum mechanics in phase space (q,p), is to take the operator based quantum mechanics of Schroedinger, or an equivalent, and assign a c-number function in phase space to it. We propose to begin with a higher level of abstraction, in which the independence and the symmetric role of q and p is maintained throughout, and at once arrive at phase space state functions. Upon reduction to the q- or p-space the proposed formalism gives the conventional quantum mechanics, however, with a definite rule for ordering of factors of noncommuting observables. Further conceptual and practical merits of the formalism are demonstrated throughout the text.
Target Space Duality III: Potentials
Orlando Alvarez; Blazej Ruszczycki
2007-12-31T23:59:59.000Z
We generalize previous results on target space duality to the case where there are background fields and the sigma model lagrangian has a potential function.
History of manned space flight
Baker, D.
1981-01-01T23:59:59.000Z
This book is the history of all the great moments of failure, tension, drama, euphoria, and success that characterized the beginning of man's adventure in space. It covers the technology and scientific knowledge, the vision, the politics, and the dedication of all those involved in the space program. One chapter is devoted to the experiments and observations of the astronauts as they explored the moon. An integral part of the history of space exploration is the race between Russia and the US to establish man in space. This is included. The book vividly portrays the experiences of the astronauts from Mercury, Gemini, Apollo, Skylab, and the Apollo-Soyuz missions. (SC)
National Aeronautics and Space Administration Space Exploration Vehicle Concept
Background NASA is testing concepts for a new generation of space exploration vehicles. These space blades to be attached for special missions. The chassis can also pick up and Functional Requirements: The SEV must be able to hold a crew of two, but can support a crew of four in an emergency it to drive
Constrained space camera assembly
Heckendorn, F.M.; Anderson, E.K.; Robinson, C.W.; Haynes, H.B.
1999-05-11T23:59:59.000Z
A constrained space camera assembly which is intended to be lowered through a hole into a tank, a borehole or another cavity is disclosed. The assembly includes a generally cylindrical chamber comprising a head and a body and a wiring-carrying conduit extending from the chamber. Means are included in the chamber for rotating the body about the head without breaking an airtight seal formed therebetween. The assembly may be pressurized and accompanied with a pressure sensing means for sensing if a breach has occurred in the assembly. In one embodiment, two cameras, separated from their respective lenses, are installed on a mounting apparatus disposed in the chamber. The mounting apparatus includes means allowing both longitudinal and lateral movement of the cameras. Moving the cameras longitudinally focuses the cameras, and moving the cameras laterally away from one another effectively converges the cameras so that close objects can be viewed. The assembly further includes means for moving lenses of different magnification forward of the cameras. 17 figs.
National Aeronautics and Space Administration
this goal. The first steps in enablingthe Visionfor Space Exploration are to return the Space Shuttle fleet and human capital to ensuring that this first step is executed to the best of our abilities. Once the two heater to further reduce or eliminatethe ice that naturally forms in the area. This decision to insert
Title: Space Management --Requests for Space Renovations and Changes in the Use of Space
Huang, Jianyu
president, the Director of Space Management will request a cost estimate from Facilities Management. 4. With the cost estimate in hand, the cognizant vice president and the Director of Space Management will undertake's Capital Budget. Vice presidents are encouraged to assign priorities to the projects in their areas. 6. Or
2010 RalSpace 2010 RalSpace Current status of RAL Space
',...) + 62 Companies (eg Astrium, SEA, SciSys, Vega, Lockheed, Thales,...) + 30 Universities (eg MIT, Cal at Harwell ....... in 34 countries #12;What do we do today? · Research Solar Physics, I-R Astronomy, Space, Precision components, Robotics test facility #12;MIRIJames Webb Space Telescope #12;#12;Solar Orbiter ESA
DEFINITION OF USABLE SPACE "Usable Space" is the actual space to be occupied by the Company. It is
DEFINITION OF USABLE SPACE "Usable Space" is the actual space to be occupied by the Company. It is determined as follows: If the space is on a single-tenancy floor, compute the inside gross area by measuring. If the space is on a multiple-tenancy floor, measure from the exterior building walls as above and to the room
Finding Space Beyond Variables: An Analytical Review of Urban Space and Social Inequalities
Joseph, Lauren
2008-01-01T23:59:59.000Z
On the Social Organization of Urban Space: Subversions andand Community in Urban Spaces. ” In David Bell & Gill1991. The Production of Space. Transl. Donald Nicholson-
Dimensional regularization in configuration space
Bollini, C.G. [Facultad de Ciencias Exactas de La Universidad de La Plata, Departamento de Fisica, C.C. 67 La Plata (Argentina)] [Facultad de Ciencias Exactas de La Universidad de La Plata, Departamento de Fisica, C.C. 67 La Plata (Argentina); [Comision de Investigaciones Cientificas de La Provincia de Buenos Aires, Buenos Aires (Argentina); Giambiagi, J.J. [Centro Brasileiro de Pesquisas Fisicas--CBPF, Rua Dr. Xavier Sigaud, 150, 22.290-180 Rio de Janeiro RJ, (Brasil)] [Centro Brasileiro de Pesquisas Fisicas--CBPF, Rua Dr. Xavier Sigaud, 150, 22.290-180 Rio de Janeiro RJ, (Brasil)
1996-05-01T23:59:59.000Z
Dimensional regularization is introduced in configuration space by Fourier transforming in {nu} dimensions the perturbative momentum space Green functions. For this transformation, the Bochner theorem is used; no extra parameters, such as those of Feynman or Bogoliubov and Shirkov, are needed for convolutions. The regularized causal functions in {ital x} space have {nu}-dependent moderated singularities at the origin. They can be multiplied together and Fourier transformed (Bochner) without divergence problems. The usual ultraviolet divergences appear as poles of the resultant analytic functions of {nu}. Several examples are discussed. {copyright} {ital 1996 The American Physical Society.}
Maia, M.D.
1981-03-01T23:59:59.000Z
The concept of contact between manifolds is applied to space--times of general relativity. For a given background space--time a contact approximation of second order is defined and interpreted both from the point of view of a metric pertubation and of a higher order tangent manifold. In the first case, an application to the high frequency gravitational wave hypothesis is suggested. In the second case, a constant curvature tangent bundle is constructed and suggested as a means to define a ten parameter local space--time symmetry.
Metrization in weakly sequential spaces
Emerson, Dominique Margaret
1975-01-01T23:59:59.000Z
* dt f th ~ A t N h tf 1 ~Sit. of weakly sequential spaces along with that of cs-hereditarily closure-preserving families, the author has characterized metri- zability in spaces where sequences suffice. Chapter II contains the definitions of locally... Dugund]i [5]. One deviation from this convention is the use of the symbol "clX(A)" to denote the closure in the space X of a set A. The subscript "X" will be deleted when no confusion will arise. The letters Z and N will denote the set of integers...
Computer aided architectural space planning
Schramek, Charles Wayne
1971-01-01T23:59:59.000Z
f' or introducing me to the space planning aspect of ar chitecture. TARLL ilF CUNTCIUTS Ci(RVTI R I CHAI'TCR II INTRODUCTION. ARCHITECTURAL SPACE PLANNING. . CHAPTCR III TIRE SPACL PLANNING PROCESS. . 12 C I I A I ' I C I/ I U CHAI'TF. R U... L I-I A PT F' R U I THE IrlTERREI ATIONS ANALYSIS MODEL. . . THE SPACE ALLOCATION PROGRAM. . . . . . . . FLITLIRE PLANNING AND DEVELOPMENT. . . . . S(1 40 CI-IRPTER UI I THE SUMIMIARY LITERATURE CITEU. Al'Pi: NDICES SAI'IPLE DATA SHEETS II...
Particle Creation in Global de Sitter Space: Bulk Space Consideration
M. Reza Tanhayi
2014-08-12T23:59:59.000Z
Recently in \\cite{Anderson:2013zia, Anderson:2013ila}, it was shown that global de Sitter space is unstable even to the massive particle creation with no self-interactions. In this paper we study the instability by making use of the coordinate-independent plane wave in de Sitter space, explicitly, we show there is a mixture of positive and negative solutions at the past infinity. The so-called plane wave are defined globally in de Sitter space and de Sitter invariance is manifest since such modes are deduced from the group theoretical point of view by the means of the Casimir operators. This method could potentially generalize to higher spin consideration and the corresponding higher-spin wave equations can be obtained in terms of the plane wave. In fact, the underling symmetry of embedding space namely the $4+1$ dimensional flat space is used to write the field equations and the solutions are obtained in terms of the plane wave in embedding space.
ABSL Space Products 2011 BENEFITS / ECONOMIC PROSPECTS
Anand, Mahesh
© ABSL Space Products 2011 BENEFITS / ECONOMIC PROSPECTS: Future exploration Roving Rendezvous Space Products 2011 ABSL Space Products for Growth: HERITAGE & RELEVANCE ABSL flew the first Lithium-Ion battery in space with 70 launched to date Now 100 people working on space batteries, including US office
National Aeronautics and Space Administration
Deep Space Atomic Clock Composite Strut Structural Testing Exoskeleton Solar Sail and Boom Fab MSL heat shield with instrumentation Inflatable Re-entry Vehicle Experiment Additive Manufacturing BIRD focal
Planck Distribution in Noncommutative Space
C. Yuce
2005-06-13T23:59:59.000Z
In this study, we derive the Planck distribution function in noncommutative space. It is found that it is modified by a small factor. It is shown that it is reduced to the usual Planck distribution function in the commutative limit .
National Aeronautics and Space Administration
LÃ¼ttgen, Gerald
National Aeronautics and Space Administration Langley Research Center Hampton, Virginia 23681 ICASE, Hampton, Virginia Victor CarreÃ±o NASA Langley Research Center, Hampton, Virginia Institute for Computer Applications in Science and Engineering NASA Langley Research Center Hampton, VA Operated
PRETEX (Halifax NS) #1 1054 1999 Mar 05 10:59:16
2010-02-12T23:59:59.000Z
Feb 16, 2007 ... For Problems 26–31, find the change-of-basis matrix PB?C from the given basis C to the given basis B of the vector space V . 26. V , B, and C ...
Metrization in weakly sequential spaces
Emerson, Dominique Margaret
1975-01-01T23:59:59.000Z
METRIZATION IN WEAXLY SEQUENTIAL SPACES A Thesis by DOMINIQUE MARGARET EMERSON Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE May 1975 Ma)or Sub...]ect: Mathematics METRIZATION IN WEAKLY SEQUENTIAL SPACES A Thesis by DOMINIQUE MARGARET EMERSON Approved as to style and content by: (Chairman of Committee) c-0 (Head of Department) ember) (Member) May 1975 ABSTRACT Metrization in Weakly Sequential...
Coordinate transformations in quaternion spaces
Zihua Weng
2009-05-15T23:59:59.000Z
The quaternion spaces can be used to describe the property of electromagnetic field and gravitational field. In the quaternion space, some coordinate transformations can be deduced from the feature of quaternions, including Lorentz transformation and Galilean transformation etc., when the coordinate system is transformed into others. And some coordinate transformations with variable speed of light can be obtained in the electromagnetic field and gravitational field.
Nuclear Propulsion in Space (1968)
None
2014-06-17T23:59:59.000Z
Project NERVA was an acronym for Nuclear Engine for Rocket Vehicle Application, a joint program of the U.S. Atomic Energy Commission and NASA managed by the Space Nuclear Propulsion Office (SNPO) at the Nuclear Rocket Development Station in Jackass Flats, Nevada U.S.A. Between 1959 and 1972, the Space Nuclear Propulsion Office oversaw 23 reactor tests, both the program and the office ended at the end of 1972.
Nuclear Propulsion in Space (1968)
None
2012-06-23T23:59:59.000Z
Project NERVA was an acronym for Nuclear Engine for Rocket Vehicle Application, a joint program of the U.S. Atomic Energy Commission and NASA managed by the Space Nuclear Propulsion Office (SNPO) at the Nuclear Rocket Development Station in Jackass Flats, Nevada U.S.A. Between 1959 and 1972, the Space Nuclear Propulsion Office oversaw 23 reactor tests, both the program and the office ended at the end of 1972.
Task-space setpoint control of robots with dual task-space information
Cheah, C. C.
In conventional task-space control problem of robots, a single task-space information is used for the entire task. When the task-space control problem is formulated in image space, this implies that visual feedback is used ...
Physical and Numerical Space Running Head: Biases in Physical and Numerical Space
Chatterjee, Anjan
Physical and Numerical Space 1 Running Head: Biases in Physical and Numerical Space Elementary school children's attentional biases in physical and numerical space Tilbe GÃ¶ksun: April 30, 2012 #12; Physical and Numerical Space 2 Abstract Numbers
Nonparametric Regression in Orlicz spaces? Saverio Salzo
Combettes, Patrick Louis
inequalities We start by recalling a theorem about inequalities in Banach spaces. Theorem (Xu, Roach 91') Let B in Banach spaces. Theorem (Xu, Roach 91') Let B be Banach space and p ]1, +[. If B is uniformly smooth
Measuring the cosmic shear in Fourier space
Zhang, Jun
2008-01-01T23:59:59.000Z
Measuring the Cosmic Shear in Fourier Space Bernardeau F. ,the Cosmic Shear in Fourier Space Jun Zhang ? Department ofshould be carried out in Fourier space, in which the point
Space, Place, and Music in New Orleans
Raimondi, Julie Michelle
2012-01-01T23:59:59.000Z
Gaston. 1994. The Poetics of Space: The Classic Look at How1980. The Human Experience of Space and Place. New York: St.hood Comes First: Race, Space, and Place in Rap and Hip-
Building America Webinar: High Performance Space Conditioning...
Webinar: High Performance Space Conditioning Systems, Part II - Compact Buried Ducts Building America Webinar: High Performance Space Conditioning Systems, Part II - Compact Buried...
Space Conditioning Standing Technical Commitee Presentation ...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Commitee Presentation Space Conditioning Standing Technical Commitee Presentation This presentation outlines the goals of the Space Conditioning Standing Technical ommittee, as...
Building America Webinar: High Performance Space Conditioning...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
II - Design Options for Locating Ducts within Conditioned Space Building America Webinar: High Performance Space Conditioning Systems, Part II - Design Options for Locating Ducts...
Total Space Heating Water Heating Cook-
Gasoline and Diesel Fuel Update (EIA)
Released: September, 2008 Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings* ... 1,602 1,397...
Total Space Heating Water Heating Cook-
Gasoline and Diesel Fuel Update (EIA)
Energy Consumption Survey: Energy End-Use Consumption Tables Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All...
Total Space Heating Water Heating Cook-
Gasoline and Diesel Fuel Update (EIA)
Released: September, 2008 Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings* ... 1,870 1,276...
Total Space Heating Water Heating Cook-
Gasoline and Diesel Fuel Update (EIA)
Released: September, 2008 Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings ... 2,037...
Indexing Moving Objects by Space Filling Curves in the Dual Space
Kaiserslautern, UniversitÃ¤t
The Bdual Â tree: Indexing Moving Objects by Space Filling Curves in the Dual Space By Man Lung Yiu Objects by Space Filling Curves in the Dual Space Introduction Related work Problem definition: Indexing Moving Objects by Space Filling Curves in the Dual Space Introduction Related work Problem
Transform-Space View: Performing Spatial Join in the Transform Space
Whang, Kyu-Young
Transform-Space View: Performing Spatial Join in the Transform Space Using Original-Space Indexes that satisfy a given spatial relationship. In spatial joins using indexes, original-space indexes such as the R-tree are widely used. An original-space index is the one that indexes objects as represented in the original space
Integration of space weather into space situational awareness
Reeves, Geoffrey D [Los Alamos National Laboratory
2010-11-09T23:59:59.000Z
Rapid assessment of space weather effects on satellites is a critical step in anomaly resolution and satellite threat assessment. That step, however, is often hindered by a number of factors including timely collection and delivery of space weather data and the inherent com plexity of space weather information. As part of a larger, integrated space situational awareness program, Los Alamos National Laboratory has developed prototype operational space weather tools that run in real time and present operators with customized, user-specific information. The Dynamic Radiation Environment Assimilation Model (DREAM) focuses on the penetrating radiation environment from natural or nuclear-produced radiation belts. The penetrating radiation environment is highly dynamic and highly orbit-dependent. Operators often must rely only on line plots of 2 MeV electron flux from the NOAA geosynchronous GOES satellites which is then assumed to be representative of the environment at the satellite of interest. DREAM uses data assimilation to produce a global, real-time, energy dependent specification. User tools are built around a distributed service oriented architecture (SOA) which will allow operators to select any satellite from the space catalog and examine the environment for that specific satellite and time of interest. Depending on the application operators may need to examine instantaneous dose rates and/or dose accumulated over various lengths of time. Further, different energy thresholds can be selected depending on the shielding on the satellite or instrument of interest. In order to rapidly assess the probability that space weather was the cause of anomalous operations, the current conditions can be compared against the historical distribution of radiation levels for that orbit. In the simplest operation a user would select a satellite and time of interest and immediately see if the environmental conditions were typical, elevated, or extreme based on how often those conditions occur in that orbit. This allows users to rapidly rule in or out environmental causes of anomalies. The same user interface can also allow users to drill down for more detailed quantitative information. DREAM can be run either from a distributed web-based user interface or as a stand-alone application for secure operations. In this paper we discuss the underlying structure of the DREAM model and demonstrate the user interface that we have developed . We also present some prototype data products and user interfaces for DREAM and discuss how space environment information can be seamlessly integrated into operational SSA systems.
Path Integration on Darboux Spaces
Christian Grosche
2005-07-20T23:59:59.000Z
In this paper the Feynman path integral technique is applied to two-dimensional spaces of non-constant curvature: these spaces are called Darboux spaces $\\DI$--$\\DIV$. We start each consideration in terms of the metric and then analyze the quantum theory in the separable coordinate systems. The path integral in each case is formulated and then solved in the majority of cases, the exceptions being quartic oscillators where no closed solution is known. The required ingredients are the path integral solutions of the linear potential, the harmonic oscillator, the radial harmonic oscillator, the modified P\\"oschl--Teller potential, and for spheroidal wave-functions, respectively. The basic path integral solutions, which appear here in a complicated way, have been developed in recent work and are known. The final solutions are represented in terms of the corresponding Green's functions and the expansions into the wave-functions, respectively. We also sketch some limiting cases of the Darboux spaces, where spaces of constant negative and zero curvature emerge.
10-Dim Einstein spaces made up on basis of 6-Dim Ricci-flat spaces and 4-Dim Einstein spaces
Valery Dryuma
2006-06-09T23:59:59.000Z
Some examples of ten-dimensional vacuum Einstein spaces made up on basis of four-dimensional Ricci-flat spaces and six-dimensional Ricci-flat spaces defined by solutions of the Sin-Gordon equation are constructed. The properties of geodesics for such type of the spaces are discussed
Evaluations of average level spacings
Liou, H.I.
1980-01-01T23:59:59.000Z
The average level spacing for highly excited nuclei is a key parameter in cross section formulas based on statistical nuclear models, and also plays an important role in determining many physics quantities. Various methods to evaluate average level spacings are reviewed. Because of the finite experimental resolution, to detect a complete sequence of levels without mixing other parities is extremely difficult, if not totally impossible. Most methods derive the average level spacings by applying a fit, with different degrees of generality, to the truncated Porter-Thomas distribution for reduced neutron widths. A method that tests both distributions of level widths and positions is discussed extensivey with an example of /sup 168/Er data. 19 figures, 2 tables.
National Aeronautics and Space Administration Space Launch System
Waliser, Duane E.
cryogenic liquid hydrogen and liquid oxygen that will feed the vehicle's RS-25 engines. SLS is an advanced avionics. Propulsion for the SLS core stage will be provided by four RS-25 engines. The RS-25 engine design was previously designated the space shuttle main engine and is built by Aerojet Rocketdyne of Sacramento, Calif
National Aeronautics and Space Administration Marshall Space Flight Center
Waliser, Duane E.
such as the Fastrac engine system, developed in only three years, and provided early development for the hydrogen for both Earth- to-orbit launch and in-space missions. We contribute engineering expertise for all phases and reducing overall cost. Marshall's managers and engineers have designed, developed, integrated
National Aeronautics and Space Administration space launch system
Waliser, Duane E.
progress on the core stage with NASA Deputy Associate Administrator Lori Garver, RS-25 engines in the Space Shuttle Main Engine Processing Facility, solid rocket motor test firing, J-2X test firing #12;Providing and operations costs. It will use a liquid hydrogen and liquid oxygen propulsion system, which will include
National Aeronautics and Space Administration Space Exploration Vehicle Concept
Background NASA is testing concepts for a new generation of roving space exploration vehicles. These new allows various tools Â winches, cable reels, backhoes, cranes and bulldozer blades Â to be attached must be able to hold a crew of two, but can support a crew of four in an emergency Â· It can travel
UCL DEPARTMENT OF SPACE & CLIMATE PHYSICS SPACE PLASMA PHYSICS GROUP
Anand, Mahesh
-DEPP-study baseline LEIA is derived directly from our Solar Orbiter EAS sensor; · However, options are also being studied for a highly miniaturised sensor system based on the MSSL's UK TechDemoSat instrument. Dust; Ion spluttering; Pick-up ions; Photo-electrons from surface; #12;UCL DEPARTMENT OF SPACE & CLIMATE
National Aeronautics and Space Administration Space Life and Physical Sciences
Waliser, Duane E.
The President's 2015 Budget is expected to be released next month 5 #12;2014 Exploration Budget FY 2014 Budget National Aeronautics and Space Administration FY 2014 PRESIDENT'S BUDGET REQUEST SUMMARY 7 #12 #12;Biological and Physical Science FY14 Budget Strategy Â· The FY 2014 Cost mark is $112.7M which
National Aeronautics and Space Administration Marshall Space Flight Center
storage. Advanced propulsion and power research and development including high power electric propulsion, nuclear thermal propulsion, space nuclear power systems, nuclear surface power systems and propellant-free systems, such as solar sails and electrodynamic tethers. Solid propulsion systems including solid boost
3739SPACE ALLOCATION/RE-ALLOCATION PROCEDURE Client identifies
Page 1 3739SPACE ALLOCATION/RE-ALLOCATION PROCEDURE Client identifies space requirement Client completes space request form Submit space request form to Space Management Office Space Management Office acknowledge receipt Is space form completed accurately Is there vacant space Space Management Office conduct
Space Instrument Realization (ISR-5)
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over Our Instagram Secretary Moniz9MorganYouofSolvingexplore correlation613Space45 Space
Library Reserved Room Policy All Meeting Spaces
Mather, Patrick T.
Library Reserved Room Policy All Meeting Spaces Room reservation To make a reservation for any Library meeting space, complete the room reservation form at http://library.syr.edu/services/space/form-findroom.php. In order to provide equitable access to library spaces, the Library may impose limitations on frequency
In ThIs Issue Berkeley's Space
Wurtele, Jonathan
In ThIs Issue Berkeley's Space Sciences Laboratory Tabletop Physics Bringing More Women's Space Sciences Laboratory to explore the physics behind the loss of the Martian atmosphere. It: Lockheed Martin #12;4 Berkeley's Space Sciences Laboratory GoinG on six decAdes of educAtion And spAce
Upper Estimates for Banach Spaces
Freeman, Daniel B.
2010-10-12T23:59:59.000Z
We study the relationship of dominance for sequences and trees in Banach spaces. In the context of sequences, we prove that domination of weakly null sequences is a uniform property. More precisely, if $(v_i)$ is a normalized basic sequence and $X...
Space Fission System Test Effectiveness
Houts, Mike [Los Alamos National Laboratory, MS-K575, Los Alamos, NM 87545 (United States); Schmidt, Glen L. [New Mexico Tech, Institute for Engineering Research and Applications, 901 University Blvd SE, Albuquerque, NM 87109-4339 (United States); Van Dyke, Melissa; Godfroy, Tom; Martin, James; Bragg-Sitton, Shannon; Dickens, Ricky; Salvail, Pat; Harper, Roger [NASA MSFC, TD40, Marshall Space Flight Center, AL, 35812 (United States)
2004-02-04T23:59:59.000Z
Space fission technology has the potential to enable rapid access to any point in the solar system. If fission propulsion systems are to be developed to their full potential, however, near-term customers need to be identified and initial fission systems successfully developed, launched, and utilized. One key to successful utilization is to develop reactor designs that are highly testable. Testable reactor designs have a much higher probability of being successfully converted from paper concepts to working space hardware than do designs which are difficult or impossible to realistically test. ''Test Effectiveness'' is one measure of the ability to realistically test a space reactor system. The objective of this paper is to discuss test effectiveness as applied to the design, development, flight qualification, and acceptance testing of space fission systems. The ability to perform highly effective testing would be particularly important to the success of any near-term mission, such as NASA's Jupiter Icy Moons Orbiter, the first mission under study within NASA's Project Prometheus, the Nuclear Systems Program.
Space Science : Atmosphere Greenhouse Effect
Johnson, Robert E.
Space Science : Atmosphere Greenhouse Effect Part-5a Solar + Earth Spectrum IR Absorbers Grey Atmosphere Greenhouse Effect #12;Radiation: Solar and Earth Surface B"(T) Planck Ideal Emission Integrate at the carbon cycle #12;However, #12;Greenhouse Effect is Complex #12;PLANETARY ENERGY BALANCE G+W fig 3-5
National Aeronautics and Space Administration
Christian, Eric
Security Management Act: Fiscal Year 2010 Report from the Office of Inspector General" (IG-11-005, NovemberNational Aeronautics and Space Administration Office of Inspector General Washington, DC 20546 and China or any Chinese company.1 The NASA Office of Inspector General (OIG) last reported to you regarding
Space Perception by Visuokinesthetic Prediction
Moeller, Ralf
propose a robot model of space perception in a restricted domain in which a robot arm pushes a small block predicts the visual image of the gripper tool and the kinesthetic state of the robot arm after a small which would move the gripper of the robot arm from its current position to a position where it would
PURDUE EXTENSION Open Space Planning
of runoff from their fields by implementing best manage- ment practices. There is more work to do of direct runoff. Contami- nated storm water can even be filtered through planned open space in the agricultural area with respect to soil erosion and some nutrients, but reduced tillage practices, filter strips
Space Science: Atmosphere Thermal Structure
Johnson, Robert E.
Space Science: Atmosphere Part -2 Thermal Structure Review tropospheres Absorption of Radiation Adiabatic Lapse Rate ~ 9 K/km Slightly smaller than our estimate Pressure ~3000ft under ocean surface thickness (positive up) is the solar zenith angle Fs is the solar energy flux at frequency (when
Physical space and cosmology. I: Model
Valeriy P. Polulyakh
2011-02-01T23:59:59.000Z
The nature of the physical space seems the most important subject in physics. A present paper proceeds from the assumption of physical reality of space contrary to the standard view of the space as a purely relational nonexistence - void. The space and its evolution are the primary sources of phenomena in Mega- and micro-worlds. Thus cosmology and particle physics have the same active agent - physical space.
Noncommutative Field Theory from Quantum Mechanical Space-Space Noncommutativity
Marcos Rosenbaum; J. David Vergara; L. Roman Juarez
2007-09-21T23:59:59.000Z
We investigate the incorporation of space noncommutativity into field theory by extending to the spectral continuum the minisuperspace action of the quantum mechanical harmonic oscillator propagator with an enlarged Heisenberg algebra. In addition to the usual $\\star$-product deformation of the algebra of field functions, we show that the parameter of noncommutativity can occur in noncommutative field theory even in the case of free fields without self-interacting potentials.
Structure of the Space of Diametrically Complete Sets in a Minkowski Space
Schneider, Rolf
Structure of the Space of Diametrically Complete Sets in a Minkowski Space JosÂ´e Pedro Moreno and Rolf Schneider Abstract We study the structure of the space of diametrically complete sets in a finite di- mensional normed space. In contrast to the Euclidean case, this space is in general not convex
United Nations Human Space Technology Initiative (HSTI)
Ochiai, M; Steffens, H; Balogh, W; Haubold, H J; Othman, M; Doi, T
2015-01-01T23:59:59.000Z
The Human Space Technology Initiative was launched in 2010 within the framework of the United Nations Programme on Space Applications implemented by the Office for Outer Space Affairs of the United Nations. It aims to involve more countries in activities related to human spaceflight and space exploration and to increase the benefits from the outcome of such activities through international cooperation, to make space exploration a truly international effort. The role of the Initiative in these efforts is to provide a platform to exchange information, foster collaboration between partners from spacefaring and non-spacefaring countries, and encourage emerging and developing countries to take part in space research and benefit from space applications. The Initiative organizes expert meetings and workshops annually to raise awareness of the current status of space exploration activities as well as of the benefits of utilizing human space technology and its applications. The Initiative is also carrying out primary ...
Nonlinear classification of Banach spaces
Randrianarivony, Nirina Lovasoa
2005-11-01T23:59:59.000Z
immediately from here. 24 3. For a subspace Y of X,wehavefZ\\Y;Z 2 cof(X)g cof(Y ). Hence: Y (t)= inf y2S Y sup W2cof(Y ) inf w2W kwk t ky + wk?1 inf y2S Y sup Z2cof(X) inf z2Z\\Y kzk t ky + zk?1 inf y2S Y sup Z2cof(X) inf z2Z kzk t ky + zk?1 inf x2S X sup... characterization of all quasi-Banach spaces that coarsely embed into a Hilbert space. The techniques used here rely on the classical work of Schoenberg [S] regarding the theory of positive and negative de nite kernels; and on the work of Aharoni, Maurey...
Carl D. Modes; Randall D. Kamien
2008-10-31T23:59:59.000Z
Regular tesselations of space are characterized through their Schlafli symbols {p,q,r}, where each cell has regular p-gonal sides, q meeting at each vertex, and r meeting on each edge. Regular tesselations with symbols {p,3,3} all satisfy Plateau's laws for equilibrium foams. For general p, however, these regular tesselations do not embed in Euclidean space, but require a uniform background curvature. We study a class of regular foams on S^3 which, through conformal, stereographic projection to R^3 define irregular cells consistent with Plateau's laws. We analytically characterize a broad classes of bulk foam bubbles, and extend and explain recent observations on foam structure and shape distribution. Our approach also allows us to comment on foam stability by identifying a weak local maximum of A^(3/2)/V at the maximally symmetric tetrahedral bubble that participates in T2 rearrangements.
Relativity theory in time-space
Ákos G. Horváth
2014-11-05T23:59:59.000Z
The concept of time-space defined in an earlier paper of the author is certain generalization of the so-called space-time. In this paper we introduce the concept of time-space manifold. In the homogeneous case, the time-space manifold is a differentiable manifold with such tangent spaces which have certain fixed time-space structure. We redefine the fundamental concepts of global relativity theory with respect to this general situation. We study the concepts of affine connection, parallel transport, curvature tensor and Einstein equation, respectively.
National Aeronautics and Space Administration Space power and energy Storage roadmap
Waliser, Duane E.
National Aeronautics and Space Administration Space power and energy Storage roadmap Technology's integrated technology roadmap, including both technology pull and technology push strategies, considers is documented in NASA's DRAFT Space Technology Roadmap, an integrated set of fourteen technology area roadmaps
Flags in Space: NASA Symbols and Flags in the U.S. Manned Space Program
Platoff, Anne M.
Nixes Meatball, Lauds Worm,” Space News, vol. 3, no. 23 (p. 2; “Let the Logo Go,” Space News, vol. 3, no. 23 (6-19Worm,” letters to the editor, Space News, vol. 3, no. 27 (27
Charge Distributions in Transverse Coordinate Space and in Impact Parameter Space
Dae Sung Hwang; Dong Soo Kim; Jonghyun Kim
2008-05-30T23:59:59.000Z
We study the charge distributions of the valence quarks inside nucleon in the transverse coordinate space, which is conjugate to the transverse momentum space. We compare the results with the charge distributions in the impact parameter space.
Space elevator systems level analysis
Laubscher, B. E. (Bryan E.)
2004-01-01T23:59:59.000Z
The Space Elevator (SE) represents a major paradigm shift in space access. It involves new, untried technologies in most of its subsystems. Thus the successful construction of the SE requires a significant amount of development, This in turn implies a high level of risk for the SE. This paper will present a systems level analysis of the SE by subdividing its components into their subsystems to determine their level of technological maturity. such a high-risk endeavor is to follow a disciplined approach to the challenges. A systems level analysis informs this process and is the guide to where resources should be applied in the development processes. It is an efficient path that, if followed, minimizes the overall risk of the system's development. systems level analysis is that the overall system is divided naturally into its subsystems, and those subsystems are further subdivided as appropriate for the analysis. By dealing with the complex system in layers, the parameter space of decisions is kept manageable. Moreover, A rational way to manage One key aspect of a resources are not expended capriciously; rather, resources are put toward the biggest challenges and most promising solutions. This overall graded approach is a proven road to success. The analysis includes topics such as nanotube technology, deployment scenario, power beaming technology, ground-based hardware and operations, ribbon maintenance and repair and climber technology.
Magnetic bags in hyperbolic space
Stefano Bolognesi; Derek Harland; Paul Sutcliffe
2015-04-07T23:59:59.000Z
A magnetic bag is an abelian approximation to a large number of coincident SU(2) BPS monopoles. In this paper we consider magnetic bags in hyperbolic space and derive their Nahm transform from the large charge limit of the discrete Nahm equation for hyperbolic monopoles. An advantage of studying magnetic bags in hyperbolic space, rather than Euclidean space, is that a range of exact charge N hyperbolic monopoles can be constructed, for arbitrarily large values of N, and compared with the magnetic bag approximation. We show that a particular magnetic bag (the magnetic disc) provides a good description of the axially symmetric N-monopole. However, an abelian magnetic bag is not a good approximation to a roughly spherical N-monopole that has more than N zeros of the Higgs field. We introduce an extension of the magnetic bag that does provide a good approximation to such monopoles and involves a spherical non-abelian interior for the bag, in addition to the conventional abelian exterior.
Large aperture diffractive space telescope
Hyde, Roderick A. (Livermore, CA)
2001-01-01T23:59:59.000Z
A large (10's of meters) aperture space telescope including two separate spacecraft--an optical primary objective lens functioning as a magnifying glass and an optical secondary functioning as an eyepiece. The spacecraft are spaced up to several kilometers apart with the eyepiece directly behind the magnifying glass "aiming" at an intended target with their relative orientation determining the optical axis of the telescope and hence the targets being observed. The objective lens includes a very large-aperture, very-thin-membrane, diffractive lens, e.g., a Fresnel lens, which intercepts incoming light over its full aperture and focuses it towards the eyepiece. The eyepiece has a much smaller, meter-scale aperture and is designed to move along the focal surface of the objective lens, gathering up the incoming light and converting it to high quality images. The positions of the two space craft are controlled both to maintain a good optical focus and to point at desired targets which may be either earth bound or celestial.
Magnetic bags in hyperbolic space
Bolognesi, Stefano; Sutcliffe, Paul
2015-01-01T23:59:59.000Z
A magnetic bag is an abelian approximation to a large number of coincident SU(2) BPS monopoles. In this paper we consider magnetic bags in hyperbolic space and derive their Nahm transform from the large charge limit of the discrete Nahm equation for hyperbolic monopoles. An advantage of studying magnetic bags in hyperbolic space, rather than Euclidean space, is that a range of exact charge N hyperbolic monopoles can be constructed, for arbitrarily large values of N, and compared with the magnetic bag approximation. We show that a particular magnetic bag (the magnetic disc) provides a good description of the axially symmetric N-monopole. However, an abelian magnetic bag is not a good approximation to a roughly spherical N-monopole that has more than N zeros of the Higgs field. We introduce an extension of the magnetic bag that does provide a good approximation to such monopoles and involves a spherical non-abelian interior for the bag, in addition to the conventional abelian exterior.
Blacker, Stefanie
2009-11-26T23:59:59.000Z
The economic, social and environmental benefits of urban green space are increasingly recognized by governments and urban planners. However, efficient methodologies of quantifying and monitoring the state of urban green spaces are needed to keep...
Broader source: Energy.gov [DOE]
This webinar, held on February 12, 2015, focused on methods to design and build roof and wall systems for high performance homes that optimize energy and moisture performance.
Space Inventory Instructions Campus Planning and Facilities
Cavusoglu, Cenk
Inventory Instructions Issued by: Campus Planning and Facilities Management Adelbert Hall, room 320 (216 2011 #12;2 | P a g e INTRODUCTION TO SPACE INVENTORY ............................................................................ 3 I. WHY SPACE INVENTORY IS REQUIRED
Scalable Address Spaces Using Rcu Balanced Trees
Clements, Austin T.
Software developers commonly exploit multicore processors by building multithreaded software in which all threads of an application share a single address space. This shared address space has a cost: kernel virtual memory ...
NASA Creates Space Technology Mission Directorate
drew media attention and articles on 3D printing, including coverage by Popular Mechanics and website on 3D printing and prototyping technology to create parts for the Space Launch System at Marshall Space
Walking and the Reinvention of Space
Topinka, Robert
2011-04-20T23:59:59.000Z
Through the figure of the walker, this thesis considers the relationship between rhetoric and space, where rhetoric is understood as embodied, performative action and space is considered both as a material artifact and an ideological production...
Building America Webinar: Retrofitting Central Space Conditioning...
Webinar: Retrofitting Central Space Conditioning Strategies for Multifamily Buildings - Steam Systems, Retrofit Measure Packages, Hydronic Systems Building America Webinar:...
Space Conditioning Standing Technical Committee Strategic Plan
Broader source: Energy.gov [DOE]
This strategic plan document outlines the gaps, barriers, and opportunities identified by the Building America Space Conditioning Standing Technical Committee.
Building America Webinar: Retrofitting Central Space Conditioning...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Introduction Building America Webinar: Retrofitting Central Space Conditioning Strategies for Multifamily Buildings - Introduction This presentation serves as the introduction to...
Mapping densities in a noisy state space
Domenico Lippolis
2013-03-05T23:59:59.000Z
Weak noise smooths out fractals in a chaotic state space and introduces a maximum attainable resolution to its structure. The balance of noise and deterministic stretching/contraction in each neighborhood introduces local invariants of the dynamics that can be used to partition the state space. We study the local discrete-time evolution of a density in a two-dimensional hyperbolic state space, and use the asymptotic eigenfunctions for the noisy dynamics to formulate a new state space partition algorithm.
Optimization Online - Vector Space Decomposition for Linear ...
Jean Bertrand Gauthier
2015-02-26T23:59:59.000Z
Feb 26, 2015 ... Abstract: This paper describes a vector space decomposition algorithmic framework for linear programming guided by dual feasibility ...
THE KINEMATIC FORMULA IN RIEMANNIAN HOMOGENEOUS SPACES
Howard, Ralph
THE KINEMATIC FORMULA IN RIEMANNIAN HOMOGENEOUS SPACES Ralph Howard Department of Mathematics)IR (N). This generalizes the Chern-Federer kinematic formula to arbitrary homogeneous spaces with an invariant Riemannian metric and leads to new formulas even in the case of submanifolds of Euclidean space
Earth and Space Sciences Geochemistry 111
Henkel, Werner
Earth and Space Sciences #12;Geochemistry 111 5 Earth and Space Sciences Research in the realm of Earth and Space Sci- ences focusses on the observation and qualitative and quantitative description of natural phenom- ena on Earth and in the Universe, on the detailed study and experimental and computational
TRAVEL INFORMATION Goddard Institute for Space Studies
for Space Studies New York City The Venue: GISS The NASA Goddard Institute for Space Studies is located the TV program Seinfeld, you may recognize our corner from the exterior shots of the diner where Jerry is a component laboratory of Goddard Space Flight Center's Earth Sciences Division, which is part of GSFC
Partial inner product spaces: Some categorical aspects
J-P. Antoine; D. Lambert; C. Trapani
2012-03-02T23:59:59.000Z
We make explicit in terms of categories a number of statements from the theory of partial inner product spaces (PIP spaces) and operators on them. In particular, we construct sheaves and cosheaves of operators on certain PIP spaces of practical interest.
Atomic power in space: A history
Not Available
1987-03-01T23:59:59.000Z
''Atomic Power in Space,'' a history of the Space Isotope Power Program of the United States, covers the period from the program's inception in the mid-1950s through 1982. Written in non-technical language, the history is addressed to both the general public and those more specialized in nuclear and space technologies. 19 figs., 3 tabs.
Observations and simulations improve space weather models
- 1 - Observations and simulations improve space weather models June 25, 2014 Los Alamos with fast-moving particles and a space weather system that varies in response to incoming energy computer simulations of the space weather that can affect vital technology, communication and navigation
Spherically symmetric monopoles in noncommutative space
Moreno, E.F. [Departamento de Fisica, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C.C. 67, 1900 La Plata (Argentina) and Department of Physics, West Virginia University, Morgantown, West Virginia 26506-6315 (United States)
2005-08-15T23:59:59.000Z
We construct a spherically symmetric noncommutative space in three dimensions by foliating the space with concentric fuzzy spheres. We show how to construct a gauge theory in this space, and, in particular, we derive the noncommutative version of a Yang-Mills-Higgs theory. We find numerical monopole solutions of the equations of motion.
Coherent states in the fermionic Fock space
Robert Oeckl
2015-01-09T23:59:59.000Z
We construct the coherent states in the sense of Gilmore and Perelomov for the fermionic Fock space. Our treatment is from the outset adapted to the infinite-dimensional case. The fermionic Fock space becomes in this way a reproducing kernel Hilbert space of continuous holomorphic functions.
Special Relativity in Quantum Phase Space
Daniela Dragoman
2008-03-06T23:59:59.000Z
A phase space treatment of special relativity of quantum systems is developed. In this approach a quantum particle remains localized if subject to inertial transformations, the localization occurring in a finite phase space area. Unlike non-relativistic transformations, relativistic transformations generally distort the phase space distribution function, being equivalent to aberrations in optics.
EDUCATION AND SKILLS CASE FOR SPACE
THE EDUCATION AND SKILLS CASE FOR SPACE PAUL SPENCER AND GRAHAM HULBERT JUNE 2006 #12;#12;Contents: IMechE Survey 40 References 42 #12;The Education and Skills Case for Space Executive Summary Our survey found that space has a direct, positive effect on educational and career decisions and on participation
TSU Space Program Student Engagement Report
de Lijser, Peter
TSU Space Program Student Engagement Report FY 2012-2013 Mission Statement The Titan Student Centers Governing Board allocates space in the Titan Student Union each semester to give recognized clubs and organizations space to plan events, conduct small meetings and store club/organization property. Program
GSLIS Space Policy September 29, 2011
Gilbert, Matthew
GSLIS Space Policy September 29, 2011 The Graduate School of Library and Information Science occupies all of the space in the building at 501 E. Daniel St., and its goal is to maximize the productive use of that space by GSLIS faculty, students, and staff. All GSLIS faculty, staff, and graduate
Divisional Space Review and Development of a
Divisional Space Review and Development of a Master Plan Abbreviated Report: Executive Summary 2009 #12;EXECUTIVE SUMMARY The Space Review Committee was established by Dean Cristina Amon of the Committee for the Divisional Space Review and Development of a Master Plan. Section A provides valuable
Making space for harmonic oscillators
Michelotti, Leo; /Fermilab
2004-11-01T23:59:59.000Z
If we restrict the number of harmonic oscillator energy eigenstates to some finite value, N, then the discrete spectrum of the corresponding position operator comprise the roots of the Hermite polynomial H{sub N+1}. Its range is just large enough to accommodate classical motion at high energy. A negative energy term must be added to the Hamiltonian which affects only the last eigenstate, |N>, suggesting it is concentrated at the extrema of this finite ''space''. Calculations support a conjecture that, in the limit of large N, the global distribution of points approaches the differential form for classical action.
Fractional Inversion in Krylov Space
B. Bunk
1998-05-28T23:59:59.000Z
The fractional inverse $M^{-\\gamma}$ (real $\\gamma >0$) of a matrix $M$ is expanded in a series of Gegenbauer polynomials. If the spectrum of $M$ is confined to an ellipse not including the origin, convergence is exponential, with the same rate as for Chebyshev inversion. The approximants can be improved recursively and lead to an iterative solver for $M^\\gamma x = b$ in Krylov space. In case of $\\gamma = 1/2$, the expansion is in terms of Legendre polynomials, and rigorous bounds for the truncation error are derived.
Free-space quantum cryptography
Hughes, R.J.; Buttler, W.T.; Kwiat, P.G.; Lamoreaux, S.K.; Morgan, G.L.; Nordholt, J.E.; Peterson, C.G.
1998-12-31T23:59:59.000Z
An experimental free-space quantum key distribution (QKD) system has been tested over an outdoor optical path of {approximately}1 km under nighttime conditions at Los Alamos National Laboratory. This system employs the Bennett 92 protocol; here the authors give a brief overview of this protocol, and describe the experimental implementation of it. An analysis of the system efficiency is presented, as well as a description of the error detection protocol, which employs a two-dimensional parity check scheme. Finally, the susceptibility of this system to eavesdropping by various techniques is determined. Possible applications include the rekeying of satellites in low earth orbit.
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over Our Instagram Secretary Moniz9MorganYouofSolvingexplore correlation613 Space Data
Space Managment | The Ames Laboratory
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
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Solar thermophotovoltaic space power system
Horne, W.E. (Boeing Aerospace Co., Seattle, WA); Day, A.C. (NASA, Marshall Space Flight Center, Huntsville, AL)
1980-01-01T23:59:59.000Z
A study has been performed on the technical feasibility and cost of a TPV system for an alternative space power supply. An analysis of six previous studies has been performed and a consistent optical, thermal, and electrical model developed. A search of the literature for materials data has been augmented by an experimental test program on materials and breadboard subsystems of the TPV. These data have been used in the model to determine the technical feasibility and the degree of performance that might be expected from such a system. A system design study was then conducted to optimize the launch configuration, the weight, and the cost of the TPV space power system. Results from this study were used to define a specific design which could be used in a detailed cost analysis. A cost analysis was then performed to determine the relative costs of the TPV power system. It appears that a system having a specific power greater than 150 W/kg can be produced for approximately 30 dollars per watt.
Reciprocal-space solvent flattening
Terwilliger, Thomas C., E-mail: terwilliger@lanl.gov [Structural Biology Group, Mail Stop M888, Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)
1999-11-01T23:59:59.000Z
A procedure is described for improvement of crystallographic phases by reciprocal-space maximization of a likelihood function including experimental phases and characteristics of the electron-density map. Solvent flattening is a powerful tool for improving crystallographic phases for macromolecular structures obtained at moderate resolution, but uncertainties in the optimal weighting of experimental phases and modified phases make it difficult to extract all the phase information possible. Solvent flattening is essentially an iterative method for maximizing a likelihood function which consists of (i) experimental phase information and (ii) information on the likelihood of various arrangements of electron density in a map, but the likelihood function is generally not explicitly defined. In this work, a procedure is described for reciprocal-space maximization of a likelihood function based on experimental phases and characteristics of the electron-density map. The procedure can readily be applied to phase improvement based on solvent flattening and can potentially incorporate information on a wide variety of other characteristics of the electron-density map.
Can rodents conceive hyperbolic spaces?
Urdapilleta, Eugenio; Stella, Federico; Treves, Alessandro
2015-01-01T23:59:59.000Z
The grid cells discovered in the rodent medial entorhinal cortex have been proposed to provide a metric for Euclidean space, possibly even hardwired in the embryo. Yet one class of models describing the formation of grid unit selectivity is entirely based on developmental self-organization, and as such it predicts that the metric it expresses should reflect the environment to which the animal has adapted. We show that, according to self-organizing models, if raised in a non-Euclidean hyperbolic cage rats should be able to form hyperbolic grids. For a given range of grid spacing relative to the radius of negative curvature of the hyperbolic surface, such grids are predicted to appear as multi-peaked firing maps, in which each peak has seven neighbours instead of the Euclidean six, a prediction that can be tested in experiments. We thus demonstrate that a useful universal neuronal metric, in the sense of a multi-scale ruler and compass that remain unaltered when changing environments, can be extended to other t...
Introduction Space-Efficient Karatsuba Space-Efficient FFT-Based Conclusions Fast and Small
Roche, Daniel S.
Introduction Space-Efficient Karatsuba Space-Efficient FFT-Based Conclusions Fast and Small: Multiplying Polynomials without Extra Space Daniel S. Roche Symbolic Computation Group School of Computer Science University of Waterloo CECM Day SFU, Vancouver, 24 July 2009 #12;Introduction Space
CRAD, Confined Spaces Assessment Plan | Department of Energy
spaces. CRAD, Confined Spaces Assessment Plan More Documents & Publications OSS 19.3 Confined Space Entry 52395 DOE-HDBK-11393-2005 FAQS Qualification Card - Industrial Hygiene...
State-space models and methods for MIMO communication
Zhang, Chengjin
2007-01-01T23:59:59.000Z
Estimation with State-Space Models . . . . . . . . . . . 2.12.2 State-Space Models for MIMO WirelessEqualization via State- Space Deconvolution . . . . . . 4.1
Space Charge and Equilibrium Emittances in Damping Rings
Venturini, Marco; Oide, Katsunobu; Wolski, Andy
2006-01-01T23:59:59.000Z
SPACE CHARGE AND EQUILIBRIUM EMITTANCES IN DAMPING RINGS ?for the pos- sible impact of space charge on the equilibriumrings. INTRODUCTION Direct space charge effects have the
Transoral robotic assisted resection of the parapharyngeal space
Mendelsohn, AH
2015-01-01T23:59:59.000Z
of selected para- pharyngeal space tumors. Eur ArchHP, Kim SH. Parapharyngeal space surgery via a transoralof the parapharyngeal space Abie H. Mendelsohn, MD *
Curved Space or Curved Vacuum?
Eric V. Linder
2005-10-11T23:59:59.000Z
While the simple picture of a spatially flat, matter plus cosmological constant universe fits current observation of the accelerated expansion, strong consideration has also been given to models with dynamical vacuum energy. We examine the tradeoff of ``curving'' the vacuum but retaining spatial flatness, vs. curving space but retaining the cosmological constant. These different breakdowns in the simple picture could readily be distinguished by combined high accuracy supernovae and cosmic microwave background distance measurements. If we allow the uneasy situation of both breakdowns, the curvature can still be measured to 1%, but at the price of degrading estimation of the equation of state time variation by 60% or more, unless additional information (such as weak lensing data or a tight matter density prior) is included.
Survivable pulse power space radiator
Mims, J.; Buden, D.; Williams, K.
1988-03-11T23:59:59.000Z
A thermal radiator system is described for use on an outer space vehicle, which must survive a long period of nonuse and then radiate large amounts of heat for a limited period of time. The radiator includes groups of radiator panels that are pivotally connected in tandem, so that they can be moved to deployed configuration wherein the panels lie largely coplanar, and to a stowed configuration wherein the panels lie in a stack to resist micrometerorite damage. The panels are mounted on a boom which separates a hot power source from a payload. While the panels are stowed, warm fluid passes through their arteries to keep them warm enough to maintain the coolant in a liquid state and avoid embrittlement of material. The panels can be stored in a largely cylindrical shell, with panels progressively further from the boom being of progressively shorter length. 5 figs.
Space nuclear power and man's extraterrestrial civilization
Angelo, J.J.; Buden, D.
1983-01-01T23:59:59.000Z
This paper examines leading space nuclear power technology candidates. Particular emphasis is given the heat-pipe reactor technology currently under development at the Los Alamos National Laboratory. This program is aimed at developing a 10-100 kWe, 7-year lifetime space nuclear power plant. As the demand for space-based power reaches megawatt levels, other nuclear reactor designs including: solid core, fluidized bed, and gaseous core, are considered.
Revisiting the conformal invariance of the scalar field: from Minkowski space to de Sitter space
E. Huguet; J. Queva; J. Renaud
2008-09-18T23:59:59.000Z
In this article, we clarify the link between the conformal (i.e. Weyl) correspondence from the Minkowski space to the de Sitter space and the conformal (i.e. SO(2,$d$)) invariance of the conformal scalar field on both spaces. We exhibit the realization on de Sitter space of the massless scalar representation of SO$(2,d)$. It is obtained from the corresponding representation in Minkowski space through an intertwining operator inherited from the Weyl relation between the two spaces. The de Sitter representation is written in a form which allows one to take the point of view of a Minkowskian observer who sees the effect of curvature through additional terms.
A philosophy for space nuclear systems safety
Marshall, A.C.
1992-08-01T23:59:59.000Z
The unique requirements and contraints of space nuclear systems require careful consideration in the development of a safety policy. The Nuclear Safety Policy Working Group (NSPWG) for the Space Exploration Initiative has proposed a hierarchical approach with safety policy at the top of the hierarchy. This policy allows safety requirements to be tailored to specific applications while still providing reassurance to regulators and the general public that the necessary measures have been taken to assure safe application of space nuclear systems. The safety policy used by the NSPWG is recommended for all space nuclear programs and missions.
Sandia National Laboratories: National Aeronautics and Space...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Aeronautics and Space Administration NASA Award for Marginal Ice Zone Observations and Process Experiment (MIZOPEX) On February 24, 2015, in Analysis, Climate, Modeling & Analysis,...
Implicit Multifunction Theorems in complete metric spaces
2010-06-10T23:59:59.000Z
Implicit Multifunction Theorems in complete metric spaces. Huynh Van Ngai ? Nguyen Huu Tron† and. Michel Théra ‡. Abstract. In this paper, we establish some ...
Space Conditioning Standing Technical Committee Strategic Plan...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Committee Strategic Plan Space Conditioning Standing Technical Committee Strategic Plan This strategic plan document outlines the gaps, barriers, and opportunities identified by...
Transverse Entanglement Migration in Hilbert Space
K. W. Chan; J. P. Torres; J. H. Eberly
2007-04-18T23:59:59.000Z
We show that, although the amount of mutual entanglement of photons propagating in free space is fixed, the type of correlations between the photons that determine the entanglement can dramatically change during propagation. We show that this amounts to a migration of entanglement in Hilbert space, rather than real space. For the case of spontaneous parametric down conversion, the migration of entanglement in transverse coordinates takes place from modulus to phase of the bi-photon state and back again. We propose an experiment to observe this migration in Hilbert space and to determine the full entanglement.
Kepler Problem in the Constant Curvature Space
G. Pronko
2007-06-04T23:59:59.000Z
We present algebraic derivation of the result of Schr\\"{o}dinger [1] for the spectrum of hydrogen atom in the space with constant curvature.
Building America Expert Meeting: Simplified Space Conditioning...
Broader source: Energy.gov (indexed) [DOE]
11, 2011, at the Seaport Hotel in Boston, Massachusetts on the topic of simplified space conditioning systems in low load homes. This meeting provided a forum for...
Ning Wu
2012-07-11T23:59:59.000Z
When we discuss problems on gravity, we can not avoid some fundamental physical problems, such as space-time, inertia, and inertial reference frame. The goal of this paper is to discuss the logic system of gravity theory and the problems of space-time, inertia, and inertial reference frame. The goal of this paper is to set up the theory on space-time in gauge theory of gravity. Based on this theory, it is possible for human kind to manipulate physical space-time on earth, and produce a machine which can physically prolong human's lifetime.
University of Washington Learning Space Assessment
Van Volkenburgh, Elizabeth
needs in light of changing instructional methodologies. The study evaluates utilization rates configuration and size, utilization rates, geographic distribution, management and overall space ownership
Boris Doubrov; Jonathan Holland; George Sparling
2009-01-05T23:59:59.000Z
A Weyl structure is a bundle over space-time, whose fiber at each space-time point is a space of maximally isotropic complex tangent planes. We develop the theory of Weyl connections for Weyl structures and show that the requirement that the connection be torsion-free fixes the Weyl connection uniquely. Further we show that to each such Weyl connection, there is naturally associated a (2, 3, 5)-Pfaffian system, as first analyzed by Cartan. We determine the associated G_2-conformal structure and calculate it explicitly in the cases of the Kapadia family of space-times and of the Schwarzschild solution
Building America Webinar: Retrofitting Central Space Conditioning...
Broader source: Energy.gov (indexed) [DOE]
of various control strategies to improve hydronic space heating performance in three low-rise multifamily buildings in Cambridge, MA. Presenters showed results from an analysis...
The Space Shuttle and Its Operations 53 Shuttle and
The Space Shuttle and Its Operations 53 The Space Shuttle and Its Operations The Space Shuttle Shuttle Builds the International Space Station #12;The Space Shuttle design was remarkable. The idea Space Telescope through refurbishments. The most impressive product that resulted from the shuttle
Focused Crawling by Learning HMM from User's Topic-specific Browsing Hongyu Liu
Milios, Evangelos E.
Â½ , Jeannette Janssen Â½ Â¾ Â½ Faculty of Computer Science, Dalhousie University hongyu,eem @cs.dal.ca Â¾ Dept
Holschuh, Bradley Thomas
2010-01-01T23:59:59.000Z
This thesis addresses two challenges associated with advanced space and planetary exploration: characterizing and improving the mobility of current and future gas pressurized space suits; and developing effective domestic ...
Zhao, Feng
1991-04-01T23:59:59.000Z
We develop a novel autonomous control synthesis strategy called Phase Space Navigator for the automatic synthesis of nonlinear control systems. The Phase Space Navigator generates global control laws by synthesizing ...
Saenz Otero, Alvar, 1975-
2005-01-01T23:59:59.000Z
This thesis formulates seven design principles for the development of laboratories which utilize the International Space Station (ISS) to demonstrate the maturation of space technologies. The principles are derived from ...
Space Logistics Modeling and Simulation Analysis using SpaceNet: Four Application Cases
Grogan, Paul Thomas
The future of space exploration will not be limited to sortie-style missions to single destinations. Even in present exploration taking place at the International Space Station in low-Earth orbit, logistics is complicated ...
KALMAN FILTERING REPRODUCING KERNEL HILBERT SPACES
Slatton, Clint
KALMAN FILTERING IN REPRODUCING KERNEL HILBERT SPACES Pingping Zhu #12;Outline · Introduction · Related Work · A Novel Extended Kernel Recursive Least Squares · Kernel Kalman Filter based on Conditional · Develop a Kalman filter in the Reproducing kernel Hilbert space (RKHS) Motivation · Kernel methods can
Rigged Hilbert spaces for chaotic dynamical systems
Suchanecki, Z. [International Solvay Institutes for Physics and Chemistry, CP 231, Campus Plaine ULB, Bd. du Triomphe, 1050 Brussels (Belgium)] [International Solvay Institutes for Physics and Chemistry, CP 231, Campus Plaine ULB, Bd. du Triomphe, 1050 Brussels (Belgium); [Hugo Steinhaus Center and Institute of Mathematics, Wrocl/aw Technical University, ul. Wybrzeze Wyspianskiego 27, 50-370 Wroclaw (Poland); Antoniou, I. [International Solvay Institutes for Physics and Chemistry, CP 231, Campus Plaine ULB, Bd. du Triomphe, 1050 Brussels (Belgium)] [International Solvay Institutes for Physics and Chemistry, CP 231, Campus Plaine ULB, Bd. du Triomphe, 1050 Brussels (Belgium); [Theoretische Natuurkunde Free University of Brussels; Tasaki, S. [International Solvay Institutes for Physics and Chemistry, CP 231, Campus Plaine ULB, Bd. du Triomphe, 1050 Brussels, Belgium and] [International Solvay Institutes for Physics and Chemistry, CP 231, Campus Plaine ULB, Bd. du Triomphe, 1050 Brussels, Belgium and; [Institute for Fundamental Chemistry 34-4 Takano Nishihiraki-cho Kyoto 606 (Japan); Bandtlow, O.F. [International Solvay Institutes for Physics and Chemistry, CP 231, Campus Plaine ULB, Bd. du Triomphe, 1050 Brussels (Belgium)] [International Solvay Institutes for Physics and Chemistry, CP 231, Campus Plaine ULB, Bd. du Triomphe, 1050 Brussels (Belgium); [Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB30HE (United Kingdom)
1996-11-01T23:59:59.000Z
We consider the problem of rigging for the Koopman operators of the Renyi and the baker maps. We show that the rigged Hilbert space for the Renyi maps has some of the properties of a strict inductive limit and give a detailed description of the rigged Hilbert space for the baker maps. {copyright} {ital 1996 American Institute of Physics.}
DREAM tool increases space weather predictions
- 1 - DREAM tool increases space weather predictions April 13, 2012 Predicting space weather improved by new DREAM modeling tool Earth's radiation belts can now be studied with a new modeling tool DREAM comes into play. Radiation belt structure and dynamics revealed DREAM is a modeling tool
National Aeronautics and Space Administration Sun
Christian, Eric
National Aeronautics and Space Administration Sun #12;National Aeronautics and Space Administration), which is suf- ficient to sustain thermonuclear fusion reactions. The released energy pre- vents. In addition to the energy-producing solar core, the interior has two distinct regions: a radiative zone
Phase Space Constraints on Neutrino Luminosities
C. Sivaram; Kenath Arun; Samartha C A
2007-06-29T23:59:59.000Z
While the importance of phase space constraints for gravitational clustering of neutrinos (which are fermions) is well recognized, the explicit use of such constraints to limit neutrino emission from ultra energetic sources has not been stressed. Special and general relativistic phase space constraints are shown to limit neutrino luminosities in compact sources in various situations.
Basis adaptation in homogeneous chaos spaces
Tipireddy, Ramakrishna, E-mail: tipiredd@usc.edu [Computational Mathematics Department, Pacific Northwest National Laboratory, PO Box 999, Richland, WA 99352 (United States)] [Computational Mathematics Department, Pacific Northwest National Laboratory, PO Box 999, Richland, WA 99352 (United States); Ghanem, Roger, E-mail: ghanem@usc.edu [210 KAP Hall, University of Southern California, Los Angeles, CA 90089 (United States)] [210 KAP Hall, University of Southern California, Los Angeles, CA 90089 (United States)
2014-02-15T23:59:59.000Z
We present a new method for the characterization of subspaces associated with low-dimensional quantities of interest (QoI). The probability density function of these QoI is found to be concentrated around one-dimensional subspaces for which we develop projection operators. Our approach builds on the properties of Gaussian Hilbert spaces and associated tensor product spaces.
Active Open Space (playing fields) in a
environmental and social benefits, the unintended consequence of implementing Bush Forever, Water Sensitive of the fringe growth sub- regions of Perth already have a shortage of active playing fields. The research as Regional Open Space, this shortage can only get worse. Background Open space is an inherent part
OFFER TO LEASE SPACE IN RESPONSE TO
. OTHER 1b. BUILDING ADDRESS sq. ft sq. ft sq. ft 1c. CITY 1d. STATE 4. LIVE FLOOR LOAD 5. MEASUREMENT _______________ - ____________ lbs./sq. ft SECTION II - SPACE OFFERED AND RATES INITIAL TERM RENEWAL OPTION TYPE OF SPACE FLOOR Full(F)/Partial
PROPOSAL TO LEASE SPACE IN RESPONSE TO
. OTHER 1b. BUILDING ADDRESS sq. ft sq. ft sq. ft 1c. CITY 1d. STATE 4. LIVE FLOOR LOAD 5. MEASUREMENT ___ ___ ___ ___ ___ - ___ ___ ___ ___ lbs./sq. ft SECTION II - SPACE OFFERED AND RATES INITIAL TERM RENEWAL OPTION TYPE OF SPACE FLOOR Full(F)/Partial
Space of Valuations March 14, 2008
Coquand, Thierry
Space of Valuations March 14, 2008 Introduction The general framework of this paper objects are represented by points of such a formal space. There are general methods to "eliminate" the use. This paper illustrates further this general program on the notion of valuations. They were introduced
Research in Space 2013 and Beyond
growth and test beds Earth and Space Science: Radiation, thermal, solar, geophysics and Earth Earth orbit to other destinations in our solar system. This orbiting laboratory is our species largest Center S.P.Korolev Rocket and Space Corporation Energia Mr. Jean Sabbagh National & International
theearthobserver National Aeronautics and Space Administration
theearthobserver National Aeronautics and Space Administration The Earth Observer. July - August Once in orbit, the solar arrays successfully deployed, two-way communication with the satellite the Tanegashima Space Center in Tanegashima, Japan. To learn more about GPM read GPM Core Observatory: Advancing
Supersymmetric Field Theories on Noncommutative Spaces
Yoshinobu Habara
2002-05-07T23:59:59.000Z
Supersymmetric field theories on noncommutative spaces are constructed. We present two different representations of noncommutative space, but we can obtain supersymmetry algebla and supersymmetric Yang-Mills action independent of its representation. As a result, we will see that the action has a close relationship with IIB matrix model.
On statistical mechanics in noncommutative spaces
S. A. Alavi
2007-09-26T23:59:59.000Z
We study the formulation of quantum statistical mechanics in noncommutative spaces. We construct microcanonical and canonical ensemble theory in noncommutative spaces. We consider for illustration some basic and important examples in the framework of noncommutative statistical mechanics : (i). An electron in a magnetic field. (ii). A free particle in a box. (iii). A linear harmonic oscillator.
Collision Avoidance in Depth Space I. INTRODUCTION
De Luca, Alessandro
; compute distances between the obstacles and the robot; optionally project the results in the CartesianCollision Avoidance in Depth Space I. INTRODUCTION When humans and robots share the same work space, safety is the primary issue of concern [8]. Secondary but not negligible is to prevent robot damages due
Visualizing quantum mechanics in phase space
Heiko Bauke; Noya Ruth Itzhak
2011-01-11T23:59:59.000Z
We examine the visualization of quantum mechanics in phase space by means of the Wigner function and the Wigner function flow as a complementary approach to illustrating quantum mechanics in configuration space by wave functions. The Wigner function formalism resembles the mathematical language of classical mechanics of non-interacting particles. Thus, it allows a more direct comparison between classical and quantum dynamical features.
The Angular Momentum-Energy Space
Dan Comanescu
2007-02-09T23:59:59.000Z
In this paper we shall define and study the angular momentum-energy space for the classical problem of plane-motions of a particle situated in a potential field of a central force. We shall present the angular momentum-energy space for some important cases.
Homological algebra in categories of Banach spaces
Brown, April D.
1999-01-01T23:59:59.000Z
In this paper I wish to develop basic algebraic concepts, category theory, and homology theory in the world of Banach spaces. We begin by defining such terms as morphisms and exact sequences, and considering what these terms mean in Banach spaces...
Field Equations in the Complex Quaternion Spaces
Zi-Hua Weng
2015-04-06T23:59:59.000Z
The paper aims to adopt the complex quaternion and octonion to formulate the field equations for electromagnetic and gravitational fields. Applying the octonionic representation enables one single definition to combine some physics contents of two fields, which were considered to be independent of each other in the past. J. C. Maxwell applied simultaneously the vector terminology and the quaternion analysis to depict the electromagnetic theory. This method edified the paper to introduce the quaternion and octonion spaces into the field theory, in order to describe the physical feature of electromagnetic and gravitational fields, while their coordinates are able to be the complex number. The octonion space can be separated into two subspaces, the quaternion space and the S-quaternion space. In the quaternion space, it is able to infer the field potential, field strength, field source, field equations, and so forth, in the gravitational field. In the S-quaternion space, it is able to deduce the field potential, field strength, field source, and so forth, in the electromagnetic field. The results reveal that the quaternion space is appropriate to describe the gravitational features; meanwhile the S-quaternion space is proper to depict the electromagnetic features.
. Limited OR restricted means for entry or exit; and 3. Not designed for continuous employee occupancy. #1217 Chapter 2 - Confined Space Entry Policy Certain environmental conditions within a confined space taken to ensure a safe environment. Responsibilities Safe entry into a confined space is the joint
National Aeronautics and Space Administration International Space Station Photosynth Scavenger Hunt
.nasa.gov INTERNATIONAL SPACE STATION (ISS) INTERACTIVE REFERENCE GUIDE National Aeronautics and Space Administration U and outfitting Exterior Aluminum, 3 cylindrical sec- tions, 2 endcones Number of racks 24 (13 scientific and 11-98 Module in preparation at Marshall Space Flight Center (MSFC). #12;
The Space Power Grid: Synergy Between Space, Energy and Security Policies
@gatech.edu Abstract - The dream of abundant solar-powered electricity from Space can be realized through global Space solar power, renewable energy, climate policy, global warming, infrastructure, power grid electric power can be generated "24/365" in Space, and conveyed down to Earth. Many concepts have been
Radiation Effects in the Space Telecommunications Environment
Fleetwood, Daniel M.; Winokur, Peter S.
1999-05-17T23:59:59.000Z
Trapped protons and electrons in the Earth's radiation belts and cosmic rays present significant challenges for electronics that must operate reliably in the natural space environment. Single event effects (SEE) can lead to sudden device or system failure, and total dose effects can reduce the lifetime of a telecommmiications system with significant space assets. One of the greatest sources of uncertainty in developing radiation requirements for a space system is accounting for the small but finite probability that the system will be exposed to a massive solar particle event. Once specifications are decided, standard laboratory tests are available to predict the total dose response of MOS and bipolar components in space, but SEE testing of components can be more challenging. Prospects are discussed for device modeling and for the use of standard commercial electronics in space.
Pseudo-Z symmetric space-times
Mantica, Carlo Alberto, E-mail: carloalberto.mantica@libero.it [Physics Department, Università degli Studi di Milano, Via Celoria 16, 20133 Milano (Italy); Suh, Young Jin, E-mail: yjsuh@knu.ac.kr [Department of Mathematics, Kyungpook National University, Taegu 702-701 (Korea, Republic of)
2014-04-15T23:59:59.000Z
In this paper, we investigate Pseudo-Z symmetric space-time manifolds. First, we deal with elementary properties showing that the associated form A{sub k} is closed: in the case the Ricci tensor results to be Weyl compatible. This notion was recently introduced by one of the present authors. The consequences of the Weyl compatibility on the magnetic part of the Weyl tensor are pointed out. This determines the Petrov types of such space times. Finally, we investigate some interesting properties of (PZS){sub 4} space-time; in particular, we take into consideration perfect fluid and scalar field space-time, and interesting properties are pointed out, including the Petrov classification. In the case of scalar field space-time, it is shown that the scalar field satisfies a generalized eikonal equation. Further, it is shown that the integral curves of the gradient field are geodesics. A classical method to find a general integral is presented.
The Fourier Transform on Quantum Euclidean Space
Kevin Coulembier
2011-05-11T23:59:59.000Z
We study Fourier theory on quantum Euclidean space. A modified version of the general definition of the Fourier transform on a quantum space is used and its inverse is constructed. The Fourier transforms can be defined by their Bochner's relations and a new type of q-Hankel transforms using the first and second q-Bessel functions. The behavior of the Fourier transforms with respect to partial derivatives and multiplication with variables is studied. The Fourier transform acts between the two representation spaces for the harmonic oscillator on quantum Euclidean space. By using this property it is possible to define a Fourier transform on the entire Hilbert space of the harmonic oscillator, which is its own inverse and satisfies the Parseval theorem.
Space-time defects and teleparallelism
J. W. Maluf; A. Goya
2001-10-24T23:59:59.000Z
We consider the class of space-time defects investigated by Puntigam and Soleng. These defects describe space-time dislocations and disclinations (cosmic strings), and are in close correspondence to the actual defects that arise in crystals and metals. It is known that in such materials dislocations and disclinations require a small and large amount of energy, respectively, to be created. The present analysis is carried out in the context of the teleparallel equivalent of general relativity (TEGR). We evaluate the gravitational energy of these space-time defects in the framework of the TEGR and find that there is an analogy between defects in space-time and in continuum material systems: the total gravitational energy of space-time dislocations and disclinations (considered as idealized defects) is zero and infinit, respectively.
G. Evenbly; G. Vidal
2010-03-05T23:59:59.000Z
The ability of entanglement renormalization (ER) to generate a proper real-space renormalization group (RG) flow in extended quantum systems is analysed in the setting of harmonic lattice systems in D=1 and D=2 spatial dimensions. A conceptual overview of the steps involved in momentum-space RG is provided and contrasted against the equivalent steps in the real-space setting. The real-space RG flow, as generated by ER, is compared against the exact results from momentum-space RG, including an investigation of a critical fixed point and the effect of relevant and irrelevant perturbations.
Quantum tomography with wavelet transform in Banach space on Homogeneous space
M. A. Jafarizadeh; M. Mirzaee; M. Rezaee
2008-01-25T23:59:59.000Z
The intimate connection between the Banach space wavelet reconstruction method on homogeneous spaces with both singular and nonsingular vacuum vectors, and some of well known quantum tomographies, such as: Moyal-representation for a spin, discrete phase space tomography, tomography of a free particle, Homodyne tomography, phase space tomography and SU(1,1) tomography is explained. Also both the atomic decomposition and banach frame nature of these quantum tomographic examples is explained in details. Finally the connection between the wavelet formalism on Banach space and Q-function is discussed.
Physical Vacuum Properties and Internal Space Dimension
M. V. Gorbatenko; A. V. Pushkin
2004-09-25T23:59:59.000Z
The paper addresses matrix spaces, whose properties and dynamics are determined by Dirac matrices in Riemannian spaces of different dimension and signature. Among all Dirac matrix systems there are such ones, which nontrivial scalar, vector or other tensors cannot be made up from. These Dirac matrix systems are associated with the vacuum state of the matrix space. The simplest vacuum system realization can be ensured using the orthonormal basis in the internal matrix space. This vacuum system realization is not however unique. The case of 7-dimensional Riemannian space of signature 7(-) is considered in detail. In this case two basically different vacuum system realizations are possible: (1) with using the orthonormal basis; (2) with using the oblique-angled basis, whose base vectors coincide with the simple roots of algebra E_{8}. Considerations are presented, from which it follows that the least-dimension space bearing on physics is the Riemannian 11-dimensional space of signature 1(-)& 10(+). The considerations consist in the condition of maximum vacuum energy density and vacuum fluctuation energy density.
Metastring Theory and Modular Space-time
Laurent Freidel; Robert G. Leigh; Djordje Minic
2015-02-27T23:59:59.000Z
String theory is canonically accompanied with a space-time interpretation which determines S-matrix-like observables, and connects to the standard physics at low energies in the guise of local effective field theory. Recently, we have introduced a reformulation of string theory which does not rely on an {\\it a priori} space-time interpretation or a pre-assumption of locality. This \\hlt{metastring theory} is formulated in such a way that stringy symmetries (such as T-duality) are realized linearly. In this paper, we study metastring theory on a flat background and develop a variety of technical and interpretational ideas. These include a formulation of the moduli space of Lorentzian worldsheets, a careful study of the symplectic structure and consequently consistent closed and open boundary conditions, and the string spectrum and operator algebra. What emerges from these studies is a new quantum notion of space-time that we refer to as a quantum Lagrangian or equivalently a \\hlt{modular space-time}. This concept embodies the standard tenets of quantum theory and implements in a precise way a notion of {relative locality}. The usual string backgrounds (non-compact space-time along with some toroidally compactified spatial directions) are obtained from modular space-time by a limiting procedure that can be thought of as a correspondence limit.
Deriving time from the geometry of space
James M. Chappell; John G. Hartnett; Nicolangelo Iannella; Derek Abbott
2015-04-08T23:59:59.000Z
The Minkowski formulation of special relativity reveals the essential four-dimensional nature of spacetime, consisting of three space and one time dimension. Recognizing its fundamental importance, a variety of arguments have been proposed over the years attempting to derive the Minkowski spacetime structure from fundamental physical principles. In this paper we illustrate how Minkowski spacetime follows naturally from the geometric properties of three dimensional Clifford space modeled with multivectors. This approach also generalizes spacetime to an eight dimensional space as well as doubling the size of the Lorentz group. This description of spacetime also provides a new geometrical interpretation of the nature of time.
Relativity of Space-Time Geometry
L. V. Verozub
1996-06-14T23:59:59.000Z
We argue that space-time geometry is not absolute with respect to the frame of reference being used. The space-time metric differential form $ds$ in noninertial frames of reference (NIFR) is caused by the properties of the used frames in accordance with the Berkley - Leibnitz - Mach - Poincar\\'{e} ideas about relativity of space and time . It is shown that the Sagnac effect and the existence of inertial forces in NIFR can be considered from this point of view. An experimental test is proposed.
Fixed point theorems in ultrametric spaces
Fullbright, Steven Edward
1972-01-01T23:59:59.000Z
) . The condition is related to the range of the metric d. The following notations will be employed in the sequel: the empty set; R, the set of real numbers; the set of rational numbers; N, the set of positive integers. The citations on this and the following... ) is an ultrametric space. We shall henceforth p p denote this space by Q p We show that Q is not a complete space. Let q c Q . Then P P n the sequence (q + p ) converges to q, and therefore Q (q) P is not closed. Since Q (q) is not closed, the set (q} is not P...
Doppler effect of time and space
Giovanni Zanella
2012-08-30T23:59:59.000Z
This paper shows as the relativistic Doppler effect can be extended also to time and space associated to moving bodies. This extension derives from the analysis of the wave-fronts of the light emitted by a moving source in inertial motion in the empty space, as viewed from the stationary reference. Indeed, time and space can be represented by the same vector quantities, which appear asymmetrical in forward and back direction along the path of the moving body. Consequently, the whole size of the moving bodies dilates along the direction of their motion, as their path. Thought experiments and real facts demonstrate this issue.
Noncommutative field theory from twisted Fock space
Bu, Jong-Geon; Kim, Hyeong-Chan; Lee, Youngone; Vac, Chang Hyon; Yee, Jae Hyung [Department of Physics, Yonsei University, Seoul (Korea, Republic of)
2006-06-15T23:59:59.000Z
We construct a quantum field theory in noncommutative space time by twisting the algebra of quantum operators (especially, creation and annihilation operators) of the corresponding quantum field theory in commutative space time. The twisted Fock space and S-matrix consistent with this algebra have been constructed. The resultant S-matrix is consistent with that of Filk [Tomas Filk, Phys. Lett. B 376, 53 (1996).]. We find from this formulation that the spin-statistics relation is not violated in the canonical noncommutative field theories.
Eddy current measurement of tube element spacing
Latham, Wayne Meredith (Forest, VA); Hancock, Jimmy Wade (Lynchburg, VA); Grut, Jayne Marie (Madison Heights, VA)
1998-01-01T23:59:59.000Z
A method of electromagnetically measuring the distance between adjacent tube elements in a heat exchanger. A cylindrical, high magnetic permeability ferrite slug is placed in the tube adjacent the spacing to be measured. A bobbin or annular coil type probe operated in the absolute mode is inserted into a second tube adjacent the spacing to be measured. From prior calibrations on the response of the eddy current coil, the signals from the coil, when sensing the presence of the ferrite slug, are used to determine the spacing between the tubes.
State of Spacef p State of Space 2009
Van Volkenburgh, Elizabeth
State of Spacef p 2009 State of Space 2009 DRAFT Â For Discussion Only #12;UW Space throughout the World Owned or Leased State of Space 2009 DRAFT Â For Discussion Only *Space recorded with the Office of Planning & Budgeting or the Real Estate Office #12;UW Space throughout the United States Owned or Leased
Small Space Heater Basics | Department of Energy
10,000 Btu to 40,000 Btu per hour. Common fuels used for this purpose are electricity, propane, natural gas, and kerosene. Although most space heaters rely on convection (the...
Usability of Outdoor Spaces in Children's Hospitals
Pasha, Samira
2012-07-16T23:59:59.000Z
Researchers have studied the positive effect of healing outdoor environments on hospitalized children, their family members and staff's health and mood. Consequently many modern hospitals dedicate portions of their space ...
PUPIL : constructing the space of visual attention
Kassner, Moritz Philipp
2012-01-01T23:59:59.000Z
This thesis explores the nature of a human experience in space through a primary inquiry into vision. This inquiry begins by questioning the existing methods and instruments employed to capture and represent a human ...
Analysis on q-deformed quantum spaces
Hartmut Wachter
2006-04-13T23:59:59.000Z
A q-deformed version of classical analysis is given to quantum spaces of physical importance, i.e. Manin plane, q-deformed Euclidean space in three or four dimensions, and q-deformed Minkowski space. The subject is presented in a rather complete and selfcontained way. All relevant notions are introduced and explained in detail. The different possibilities to realize the objects of q-deformed analysis are discussed and their elementary properties are studied. In this manner attention is focused on star products, q-deformed tensor products, q-deformed translations, q-deformed partial derivatives, dual pairings, q-deformed exponentials, and q-deformed integration. The main concern of this work is to show that these objects fit together in a consistent framework, which is suitable to formulate physical theories on quantum spaces.
Bimanual cross-coupling in space telerobotics
Wang, Victor, S.M. Massachusetts Institute of Technology
2012-01-01T23:59:59.000Z
Astronauts spend much time training to control the robotic arm aboard the International Space Station, and must perform a variety of challenging, three-dimensional tasks. They use a unique, bimanual control system to control ...
National Aeronautics and Space Administration November 2010
and prioritization of NASA's space technology activities. This document presents the DRAFT Technology Area 08 input, as well as any other particles, electromagnetic fields, both DC and AC, acoustic energy, seismic energy
Spacing innovation and learning in design organizations
García Herrera, Cristóbal, 1974-
2004-01-01T23:59:59.000Z
The main research question of this thesis is the following: What is the relationship between spaces and innovation in the context of design organizations such as IDEO, the MIT Media Lab and Design Continuum? This thesis ...
Radon Transform in Finite Dimensional Hilbert Space
M. Revzen
2012-02-06T23:59:59.000Z
Novel analysis of ?nite dimensional Hilbert space is outlined. The approach bypasses general, inherent, di?culties present in handling angular variables in ?nite dimensional problems: The ?nite dimensional, d, Hilbert space operators are underpinned with ?nite geometry which provide intuitive perspective to the physical operators. The analysis emphasizes a central role for projectors of mutual unbiased bases (MUB) states, extending thereby their use in ?nite dimensional quantum mechanics studies. Interrelation among the Hilbert space operators revealed via their (?nite) dual a?ne plane geometry (DAPG) underpinning are displayed and utilized in formulating the ?nite dimensional ubiquitous Radon transformation and its inverse illustrating phase space-like physics encoded in lines and points of the geometry. The ?nite geometry required for our study is outlined.
A charm that has been in space
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
charm that has been in space Carolyn Gooch called to say that she wanted me to stop by her house that she had something to donate to the Y-12 History Center. I knew what it was....
Cargo revenue management for space logistics
Armar, Nii A
2009-01-01T23:59:59.000Z
This thesis covers the development of a framework for the application of revenue management, specifically capacity control, to space logistics for use in the optimization of mission cargo allocations, which in turn affect ...
ASTRONAUTICS & SPACE ASTE OVERVIEW PROGRAMS AVAILABLE
Rohs, Remo
FLOWCHARTS Astronautical engineers design, build and operate space vehicles used in exploration of molecular interaction, and reconfigurable autonomous robots. PROGRAMS AVAILABLE Astronautical Engineering. Liquid- and solid-fueled rockets. Nuclear and electric propulsion. (Duplicates credit in former AME 473
Open Space Stewardship Program 2013 Celebration
Broader source: Energy.gov [DOE]
Students in grades K through 12 are involved in authentic environmental research on properties in their own communities, fostering a sense of ownership and responsibility for open space within...
Virtual tour: INL's space battery facility
Johnson, Steve
2011-01-01T23:59:59.000Z
This virtual tour shows how INL fuels and tests nuclear power systems for deep space missions. To learn more about INL's contribution to the Mars Science Laboratory, visit http://www.inl.gov/marsrover.
Open Space Stewardship Workshop for Secondary Teachers
Broader source: Energy.gov [DOE]
This practical, hands-on workshop provides an opportunity to experience the equipment and field techniques that are useful in Open Space Stewardship Program. The four day workshop (July 15-19 2013)...
Virtual tour: INL's space battery facility
Johnson, Steve
2013-05-28T23:59:59.000Z
This virtual tour shows how INL fuels and tests nuclear power systems for deep space missions. To learn more about INL's contribution to the Mars Science Laboratory, visit http://www.inl.gov/marsrover.
"Dark energy" as conformal dynamics of space
D. Burlankov
2006-10-23T23:59:59.000Z
The exact solution for dynamic of conform-flat space homogeneous since dynamic equation is given. Conform mode of space metric changing in Global time theory has negative energy density. Swap of energy to this mode from another ones lead to increasing of Universe homogeneity although probability of this swap from local objects is negligibly small. Conform mode is corresponding to "dark energy" in observation astronomy.
Chiral gap effect in curved space
Antonino Flachi; Kenji Fukushima
2014-06-25T23:59:59.000Z
We discuss a new type of QCD phenomenon induced in curved space. In the QCD vacuum a mass gap of Dirac fermions is attributed to the spontaneous breaking of chiral symmetry. If the curvature is positive large, the chiral condensate melts but a chiral invariant mass gap can still remain, which we name the chiral gap effect in curved space. This leads to decoupling of quark deconfinement which implies a view of black holes surrounded by a first-order QCD phase transition.
Optimum phase space probabilities from quantum tomography
Roy, Arunabha S., E-mail: roy.arunabha@gmail.com [King's College, London (United Kingdom); Roy, S. M., E-mail: smroy@hbcse.tifr.res.in [HBCSE, Tata Institute of Fundamental Research, Mumbai (India)
2014-01-15T23:59:59.000Z
We determine a positive normalised phase space probability distribution P with minimum mean square fractional deviation from the Wigner distribution W. The minimum deviation, an invariant under phase space rotations, is a quantitative measure of the quantumness of the state. The positive distribution closest to W will be useful in quantum mechanics and in time frequency analysis. The position-momentum correlations given by the distribution can be tested experimentally in quantum optics.
Ramanujan's Master Theorem for Riemannian symmetric spaces
Olafsson, Gestur
2011-01-01T23:59:59.000Z
Ramanujan's Master theorem states that, under suitable conditions, the Mellin transform of a power series provides an interpolation formula for the coefficients of this series. Based on the duality of Riemannian symmetric spaces of compact and noncompact type inside a common complexification, we prove an analogue of Ramanujan's Master Theorem for the spherical Fourier transform of a spherical Fourier series. This extend the results proven by Bertram for Riemannian symmetric spaces of rank-one.
State visibility in Q-bit space
A. F. Kracklauer
2007-03-04T23:59:59.000Z
We study by comparison the structure of singlet type states in Q-bit space in the light of quantum and classical paradigms. It is shown that only the classical paradigm implies a variation in the visibility of correlation coefficients, that has been observed in fact in experiments. We conclude that Q-bit space in not a appropriate venue for an EPR test of quantum completeness.
Small Reactor for Deep Space Exploration
None
2012-11-29T23:59:59.000Z
This is the first demonstration of a space nuclear reactor system to produce electricity in the United States since 1965, and an experiment demonstrated the first use of a heat pipe to cool a small nuclear reactor and then harvest the heat to power a Stirling engine at the Nevada National Security Site's Device Assembly Facility confirms basic nuclear reactor physics and heat transfer for a simple, reliable space power system.
Small Reactor for Deep Space Exploration
None
2014-05-30T23:59:59.000Z
This is the first demonstration of a space nuclear reactor system to produce electricity in the United States since 1965, and an experiment demonstrated the first use of a heat pipe to cool a small nuclear reactor and then harvest the heat to power a Stirling engine at the Nevada National Security Site's Device Assembly Facility confirms basic nuclear reactor physics and heat transfer for a simple, reliable space power system.
Flying on Sun Shine: Sailing in Space
Alhorn, Dean (NASA, Marshall Space Flight Center) [NASA, Marshall Space Flight Center
2012-03-28T23:59:59.000Z
On January 20th, 2011, NanoSail-D successfully deployed its sail in space. It was the first solar sail vehicle to orbit the earth and the second sail ever unfurled in space. The 10m2 sail, deployment mechanism and electronics were packed into a 3U CubeSat with a volume of about 3500cc. The NanoSail-D mission had two objectives: eject a nanosatellite from a minisatellite; deploy its sail from a highly compacted volume to validate large structure deployment and potential de-orbit technologies. NanoSail-D was jointly developed by NASA's Marshall Space Flight Center and Ames Research Center. The ManTech/NeXolve Corporation provided key sail design support. NanoSail-D is managed by Marshall and jointly sponsored by the Army Space and Missile Defense Command, the Space Test Program, the Von Braun Center for Science and Innovation and Dynetics Inc. The presentation will provide insights into sailcraft advances and potential missions enabled by this emerging in-space propulsion technology.
Tethered nuclear power for the Space Station
Bents, D.J.
1985-01-01T23:59:59.000Z
A nuclear space power system the SP-100 is being developed for future missions where large amounts of electrical power will be required. Although it is primarily intended for unmanned spacecraft, it can be adapted to a manned space platform by tethering it above the station through an electrical transmission line which isolates the reactor far away from the inhabited platform and conveys its power back to where it is needed. The transmission line, used in conjunction with an instrument rate shield, attenuates reactor radiation in the vicinity of the space station to less than one-one hundredth of the natural background which is already there. This combination of shielding and distance attenuation is less than one-tenth the mass of boom-mounted or onboard man-rated shields that are required when the reactor is mounted nearby. This paper describes how connection is made to the platform (configuration, operational requirements) and introduces a new element the coaxial transmission tube which enables efficient transmission of electrical power through long tethers in space. Design methodology for transmission tubes and tube arrays is discussed. An example conceptual design is presented that shows SP-100 at three power levels 100 kWe, 300 kWe, and 1000 kWe connected to space station via a 2 km HVDC transmission line/tether. Power system performance, mass, and radiation hazard are estimated with impacts on space station architecture and operation.
Meagher, Mary
Guide to Space groups There are only 230 ways (space groups) to describe how identical objects can but it gets better than that! If your structure contains a chrial center then any space group that has a mirror or an inversion operation can be rejected. Of the 230 space groups only 74 space groups
'AdS_5' Geometry Beyond Space-time and 4D Noncommutative Space-time
Otto C. W. Kong
2009-06-19T23:59:59.000Z
We discuss a 4D noncommutative space-time as suggested by the version of quantum (deformed) relativity which provides a classical geometry picture as an `AdS_5'. The 4D noncommutative space-time is more like a part of a phase space description, in accordance with the quantum notion -- quantum mechanics talks about only states but not configurations. The `AdS_5' picture also illustrates the classical 4D space-time is to be described as part of a bigger geometry beyond space-time at the quantum level. The radically new picture of quantum 'space-time' is expected to provide the basis for a (still to be formulated) new approach to quantum gravity with fundamental constants (quantum) hbar and Newton's constant G put at a similar level as c, the speed of light.
Design Space Exploration of Parameterized Systems using Design of Experiments
Sheldon, David
2011-01-01T23:59:59.000Z
13 2.1 Design space exploration for system specific tuningShin Figure 5: Noxim NoC design space with over 60,00030: Percent of the design space that needs to be explored in
Unusual light in dark space revealed by Los Alamos, NASA
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Unusual light in dark space revealed by Los Alamos, NASA Unusual light in dark space revealed by Los Alamos, NASA By looking at the dark spaces between visible galaxies and stars...
Bonsai: a philosophy for efficient exhaustion of large sparse spaces
Nguyen, Phuong-Anh Nguyet
1995-01-01T23:59:59.000Z
This thesis introduces the Bonsai technique which can efficiently improve the identification of large nonsolution spaces in the search space. The technique can make exponential improvements in the reduction of the search space using a linear method...
advanced space radiators: Topics by E-print Network
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
about the space radiation impacts on the human body and defend the space radiation damage. This paper designed a prototype of the space radiation detector for SJ-10 and...
National Aeronautics and Space Administration Space Technology RoadmapS STR
/kW Asteroid Deflection Demonstration >1,000 m2 Solar Sail Orbital Demo Space Demo Refueling from tanker >2,500 m2 Solar Sail Space Demo Momentum Exchange Tether Boost Station Demo CRYOSTAT Interstellar Probe MPD 250-500 kW Li MPD 1 MW Li MPD NTR 5klbf Engine test NTP 5 klbf Demo >40,000 m2 Solar Sail Space
Yang, Zhanfeng; Liu, Guozhi [Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an 710049 (China) [Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an 710049 (China); Northwest Institute of Nuclear Technology, P.O. Box 69-13, Xi'an 710024 (China); Shao, Hao; Chen, Changhua; Sun, Jun [Northwest Institute of Nuclear Technology, P.O. Box 69-13, Xi'an 710024 (China)] [Northwest Institute of Nuclear Technology, P.O. Box 69-13, Xi'an 710024 (China)
2013-10-15T23:59:59.000Z
This paper reports the space-charge limited current (SLC) and virtual cathode behaviors in one-dimensional grounded drift space. A simple general analytical solution and an approximate solution for the planar diode are given. Through a semi-analytical method, a general solution for SLC in one-dimensional drift space is obtained. The behaviors of virtual cathode in the drift space, including dominant frequency, electron transit time, position, and transmitted current, are yielded analytically. The relationship between the frequency of the virtual cathode oscillation and the injected current presented may explain previously reported numerical works. Results are significant in facilitating estimations and further analytical studies.
Space-time attributes of physical objects and the laws of space-time physics
J. H. Field
2008-09-24T23:59:59.000Z
Physical time intervals are attributes of single physical object whereas physical space intervals are a relational attribute of two physical objects. Some consequences of the breaking of the space-time exchange symmetry inherent in the Lorentz transformation following from the above distinction are investigated. In particular, it is shown that the relativity of simultaneity and length contraction effects which naively follow from space-time symmetry of the Lorentz transformation do not occur. Seven laws describing the relation between observations of space intervals, time intervals and velocities in different reference frames are given. Only two of these laws are respected by conventional special relativity theory.
East Middle School and Cayuga Community College Space Heating...
Middle School and Cayuga Community College Space Heating Low Temperature Geothermal Facility Jump to: navigation, search Name East Middle School and Cayuga Community College Space...
Cedarville Elementary & High School Space Heating Low Temperature...
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Walley's Hot Springs Resort Space Heating Low Temperature Geothermal...
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Klamath Apartment Buildings (13) Space Heating Low Temperature...
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Jackson Hot Springs Lodge Space Heating Low Temperature Geothermal...
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Merle West Medical Center Space Heating Low Temperature Geothermal...
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Warm Springs State Hospital Space Heating Low Temperature Geothermal...
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Shared Space vs. In-Unit Upgrades in Multifamily Buildings |...
Shared Space vs. In-Unit Upgrades in Multifamily Buildings Shared Space vs. In-Unit Upgrades in Multifamily Buildings Better Buildings Neighborhood Program Multifamily Peer...
Before the House Science, Space, and Technology Subcommittee...
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Before the House Science, Space, and Technology Subcommittee...
Office of Environmental Management (EM)
Investigations and Oversight Before the House Science, Space, and Technology Subcommittee on Investigations and Oversight Before the House Science, Space, and Technology...
Active-space completely-renormalized equation-of-motioncoupled...
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space completely-renormalized equation-of-motion coupled-clusterformalism: Excited-state studies of green fluorescent Active-space completely-renormalized equation-of-motion...
Before the House Committee on Science, Space and Technology Subcommitt...
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Science, Space and Technology Subcommittee on Energy Before the House Committee on Science, Space and Technology Subcommittee on Energy Testimony of Dr. Imre Gyuk, Program Manger...
Building America Final Expert Meeting Report: Simplified Space...
Broader source: Energy.gov (indexed) [DOE]
Final Expert Meeting Report: Simplified Space Conditioning Strategies for Energy Efficient Houses Building America Final Expert Meeting Report: Simplified Space Conditioning...
New Horizons Mission Powered by Space Radioisotope Power Systems...
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Thermoelectrics: From Space Power Systems to Terrestrial Waste...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Thermoelectrics: From Space Power Systems to Terrestrial Waste Heat Recovery Applications Thermoelectrics: From Space Power Systems to Terrestrial Waste Heat Recovery Applications...
Space Mapping: Models, Sensitivities, and Trust-Regions Methods 1 ...
We consider also a di erent perspective of space mapping and apply it, ... built by composition of the space mapping and the coarse model is a regular function.
Quasi-orthogonal space-frequency and space-time-frequency block codes for MIMO OFDM channels
Fazel, Fatemeh; Jafarkhani, Hamid
2008-01-01T23:59:59.000Z
Lu and X. Wang, “Space-time code design in OFDM systems,” inSpace-time block codes from orthogonal designs,” IEEE Trans.orthogonal space- time block codes with full diversity,”
Boning, Peggy
2009-01-01T23:59:59.000Z
Teams of autonomous space robots are needed for future space missions such as the construction of large solar power stations and large space telescopes in earth orbit. This work focuses on the control of teams of robots ...
Dela Peña, Emelyn A.
2009-01-01T23:59:59.000Z
to take a nap as it is a space to be awakened. Referencesthe (n)either/(n)or of ‘third space’: (re) presenting hybridNegotiations in the Third Space. Feminist theology, 13(1),
Metastring Theory and Modular Space-time
Freidel, Laurent; Minic, Djordje
2015-01-01T23:59:59.000Z
String theory is canonically accompanied with a space-time interpretation which determines S-matrix-like observables, and connects to the standard physics at low energies in the guise of local effective field theory. Recently, we have introduced a reformulation of string theory which does not rely on an {\\it a priori} space-time interpretation or a pre-assumption of locality. This \\hlt{metastring theory} is formulated in such a way that stringy symmetries (such as T-duality) are realized linearly. In this paper, we study metastring theory on a flat background and develop a variety of technical and interpretational ideas. These include a formulation of the moduli space of Lorentzian worldsheets, a careful study of the symplectic structure and consequently consistent closed and open boundary conditions, and the string spectrum and operator algebra. What emerges from these studies is a new quantum notion of space-time that we refer to as a quantum Lagrangian or equivalently a \\hlt{modular space-time}. This conce...
Dynamical 3-Space: neo-Lorentz Relativity
Reginald T Cahill
2012-07-05T23:59:59.000Z
The major extant relativity theories - Galileo's Relativity (GaR), Lorentz's Relativity (LR) and Einstein's Special Relativity (SR), with the latter much celebrated, while the LR is essentially ignored. Indeed it is often incorrectly claimed that SR and LR are experimentally indistinguishable. Here we show that (i) SR and LR are experimentally distinguishable, (ii) that comparison of gas-mode Michelson interferometer experiments with spacecraft earth-flyby Doppler shift data demonstrate that it is LR that is consistent with the data, while SR is in conflict with the data, (iii) SR is exactly derivable from GaR by means of a mere linear change of space and time coordinates that mixes the Galilean space and time coordinates. So it is GaR and SR that are equivalent. Hence the well-known SR relativistic effects are purely coordinate effects, and cannot correspond to the observed relativistic effects. The connections between these three relativity theories has become apparent following the discovery that space is an observable dynamical textured system, and that space and time are distinct phenomena, leading to a neo-Lorentz Relativity (nLR). The observed relativistic effects are dynamical consequences of nLR and 3-space. In particular a proper derivation of the Dirac equation from nLR is given, which entails the derivation of the rest mass energy mc^2
Hodge Spaces for Real Toric Varieties
Hower, Valerie
2007-01-01T23:59:59.000Z
We define the Z/2Z Hodge spaces H_{pq}(\\Sigma) of a fan \\Sigma. If \\Sigma is the normal fan of a reflexive polytope \\Delta then we use polyhedral duality to compute the Z/2Z Hodge Spaces of \\Sigma. In particular, if the cones of dimension at most e in the face fan \\Sigma^* of \\Delta are smooth then we compute H_{pq}(\\Sigma) for p
Topology on locally finite metric spaces
Capraro, Valerio
2011-01-01T23:59:59.000Z
The necessity of a theory of General Topology and, most of all, of Algebraic Topology on locally finite metric spaces comes from many areas of research in both Applied and Pure Mathematics: Molecular Biology, Mathematical Chemistry, Computer Science, Topological Graph Theory and Metric Geometry. In this paper we propose the basic notions of such a theory and some applications: we replace the classical notions of continuous function, homeomorphism and homotopic equivalence with the notions of NPP-function, NPP-local-isomorphism and NPP-homotopy (NPP stands for Nearest Point Preserving); we also introduce the notion of NPP-isomorphism. We construct three invariants under NPP-isomorphisms and, in particular, we define the fundamental group of a locally finite metric space. As first applications, we propose the following: motivated by the longstanding question whether there is a purely metric condition which extends the notion of amenability of a group to any metric space, we propose the property SN (Small Neighb...
de Sitter space from M-theory?
Andrew Chamblin; Neil D. Lambert
2001-02-26T23:59:59.000Z
In this note we study a massive IIA supergravity theory obtained in hep-th/9707139 by compactification of M-theory. We point out that de Sitter space in arbitrary dimensions arises naturally as the vacuum of this theory. This explicitly shows how de Sitter space can be embedded into eleven-dimensional supergravity. In addition we discuss the novel way in which this theory avoids various `no-go theorems' which assert that de Sitter space is not a consistent vacua of eleven-dimensional supergravity theory. We also point out that the eight-branes of this theory, which couple electrically to the ten-form, can sweep out de Sitter world-volumes.
Y. M. Cho
2007-03-02T23:59:59.000Z
We present a topological classification of vacuum space-time. Assuming the 3-dimensional space allows a global chart, we show that the static vacuum space-time of Einstein's theory can be classified by the knot topology $\\pi_3(S^3)=\\pi_3(S^2)$. Viewing Einstein's theory as a gauge theory of Lorentz group and identifying the gravitational connection as the gauge potential of Lorentz group, we construct all possible vacuum gravitational connections which give a vanishing curvature tensor. With this we show that the vacuum connection has the knot topology, the same topology which describes the multiple vacua of SU(2) gauge theory. We discuss the physical implications of our result in quantum gravity.
Very Large Aperture Diffractive Space Telescope
Hyde, Roderick Allen
1998-04-20T23:59:59.000Z
A very large (10's of meters) aperture space telescope including two separate spacecraft--an optical primary functioning as a magnifying glass and an optical secondary functioning as an eyepiece. The spacecraft are spaced up to several kilometers apart with the eyepiece directly behind the magnifying glass ''aiming'' at an intended target with their relative orientation determining the optical axis of the telescope and hence the targets being observed. The magnifying glass includes a very large-aperture, very-thin-membrane, diffractive lens, e.g., a Fresnel lens, which intercepts incoming light over its full aperture and focuses it towards the eyepiece. The eyepiece has a much smaller, meter-scale aperture and is designed to move along the focal surface of the magnifying glass, gathering up the incoming light and converting it to high quality images. The positions of the two space craft are controlled both to maintain a good optical focus and to point at desired targets.
Solar Power Beaming: From Space to Earth
Rubenchik, A M; Parker, J M; Beach, R J; Yamamoto, R M
2009-04-14T23:59:59.000Z
Harvesting solar energy in space and power beaming the collected energy to a receiver station on Earth is a very attractive way to help solve mankind's current energy and environmental problems. However, the colossal and expensive 'first step' required in achieving this goal has to-date stifled its initiation. In this paper, we will demonstrate that recent advance advances in laser and optical technology now make it possible to deploy a space-based system capable of delivering 1 MW of energy to a terrestrial receiver station, via a single unmanned commercial launch into Low Earth Orbit (LEO). Figure 1 depicts the overall concept of our solar power beaming system, showing a large solar collector in space, beaming a coherent laser beam to a receiving station on Earth. We will describe all major subsystems and provide technical and economic discussion to support our conclusions.
National Aeronautics and Space Administration In-Space propulSIon SyStemS roadmap
Waliser, Duane E.
National Aeronautics and Space Administration In-Space propulSIon SyStemS roadmap Technology Area Missions TA02-24 Acknowledgements TA02-24 #12;Foreword NASA's integrated technology roadmap, including both Roadmap, an integrated set of fourteen technology area roadmaps, recommending the overall technology
Waliser, Duane E.
Space Policy Goals · Energize competitive domestic industries · Expand international cooperation human and robotic initiatives · Improve space-based Earth and solar observation "NASA has a key role the solar system. · Expand scientific understanding of the Earth and the universe in which we live. · Create
Serving the Marshall Space Flight Center Community National Aeronautics and Space Administration
Serving the Marshall Space Flight Center Community National Aeronautics and Space Administration July 1, 2010 #12;2 July 1, 2010 Director's Corner This year we're celebrating Marshall's 50th anniversary and the generations of men and women who have made Marshall what it is today. We are stewards
Teaching Factor Analysis in Terms of Variable Space and Subject Space Using Multimedia
Yu, Alex
Teaching Factor Analysis in Terms of Variable Space and Subject Space Using Multimedia formed the basis for construction and implementation of a computer-based multimedia instructional program the findings, a multimedia program was developed to counteract those miscoceptions. The target audience
Space Propulsion Field Exam: Space Propulsion/Plasma Physics REQUIRED BY ALL STUDENTS
de Weck, Olivier L.
Space Propulsion Field Exam: Space Propulsion/Plasma Physics REQUIRED BY ALL STUDENTS From) Both devices use magnetic fields, even though they both are electrostatic ion accelerators. Explain the role of the magnetic field in each of them, and how this guides the layout of these fields. 3) One
From Discrete Space-Time to Minkowski Space: Basic Mechanisms, Methods and Perspectives
Felix Finster
2008-02-22T23:59:59.000Z
This survey article reviews recent results on fermion system in discrete space-time and corresponding systems in Minkowski space. After a basic introduction to the discrete setting, we explain a mechanism of spontaneous symmetry breaking which leads to the emergence of a discrete causal structure. As methods to study the transition between discrete space-time and Minkowski space, we describe a lattice model for a static and isotropic space-time, outline the analysis of regularization tails of vacuum Dirac sea configurations, and introduce a Lorentz invariant action for the masses of the Dirac seas. We mention the method of the continuum limit, which allows to analyze interacting systems. Open problems are discussed.
Renormalization of Wilson Operators in Minkowski space
A. Andraši; J. C. Taylor
1996-01-23T23:59:59.000Z
We make some comments on the renormalization of Wilson operators (not just vacuum -expectation values of Wilson operators), and the features which arise in Minkowski space. If the Wilson loop contains a straight light-like segment, charge renormalization does not work in a simple graph-by-graph way; but does work when certain graphs are added together. We also verify that, in a simple example of a smooth loop in Minkowski space, the existence of pairs of points which are light-like separated does not cause any extra divergences.
Cubature on Wiener Space: Pathwise Convergence
Bayer, Christian, E-mail: christian.bayer@wias-berlin.de; Friz, Peter K., E-mail: friz@math.tu-berlin.de [WIAS Berlin (Germany)
2013-04-15T23:59:59.000Z
Cubature on Wiener space (Lyons and Victoir in Proc. R. Soc. Lond. A 460(2041):169-198, 2004) provides a powerful alternative to Monte Carlo simulation for the integration of certain functionals on Wiener space. More specifically, and in the language of mathematical finance, cubature allows for fast computation of European option prices in generic diffusion models.We give a random walk interpretation of cubature and similar (e.g. the Ninomiya-Victoir) weak approximation schemes. By using rough path analysis, we are able to establish weak convergence for general path-dependent option prices.
NORMALITY VERSUS COUNTABLE PARACOMPACTNESS IN PERFECT SPACES
Wage, M. L.; Fleissner, William G.; Reed, G. M.
1976-07-01T23:59:59.000Z
spaces, Proc. Topology Conf. (Memphis State Univ., 1975) (to appear). 3. H. Cook, Cartesian products and continuous semi-metrics, Proc. Conf. on Topology (1967), Arizona State Univ., Tempe, Ariz., 1968, pp. 5 8 - 6 3 . MR 38 #5152. 4. C. H. Dowker.... Pittsburgh Internat. Conf., 1972), Lecture Notes in Math., vol. 378, Springer-Verlag, Berlin and New York, 1974, pp. 243-247. MR 49 #1457. 9. A. J. Ostaszewski, On countably compact, perfectly normal spaces, J. London Math. Soc. (to appear). 10. C. W...
Thulium heat sources for space power applications
Alderman, C.J.
1992-05-01T23:59:59.000Z
Reliable power supplies for use in transportation and remote systems will be an important part of space exploration terrestrial activities. A potential power source is available in the rare earth metal, thulium. Fuel sources can be produced by activating Tm-169 targets in the space station reactor. The resulting Tm-170 heat sources can be used in thermoelectric generators to power instrumentation and telecommunications located at remote sites such as weather stations. As the heat source in a dynamic Sterling or Brayton cycle system, the heat source can provide a lightweight power source for rovers or other terrestrial transportation systems.
Holographic Space-time and Newton's Law
Tom Banks; Willy Fischler
2013-10-25T23:59:59.000Z
We derive Newton's Law from the formalism of Holographic Space-Time (HST). More precisely, we show that for a large class of Hamiltonians of the type proposed previously for the HST description of a geodesic in Minkowski space, the eikonal for scattering of two massless particles at large impact parameter scales as expected with the impact parameter and the energies of the particles in the center of mass (CM) frame. We also discuss the criteria for black hole production in this collision, and find an estimate, purely within the HST framework, for the impact parameter at which it sets in, which coincides with the estimate based on general relativity.
HLW Tank Space Management, Final Report
Miller, M.S.; Abell, G.; Garrett, R.; d'Entremont, P.; Fowler, J.R.; Mahoney, M.; Poe, L.
1999-09-20T23:59:59.000Z
The HLW Tank Space Management Team (SM Team) was chartered to select and recommend an HLW Tank Space Management Strategy (Strategy) for the HLW Management Division of Westinghouse Savannah River Co. (WSRC) until an alternative salt disposition process is operational. Because the alternative salt disposition process will not be available to remove soluble radionuclides in HLW until 2009, the selected Strategy must assure that it safely receives and stores HLW at least until 2009 while continuing to supply sludge slurry to the DWPF vitrification process.
Unitary Evolution on a Discrete Phase Space
E. G. Floratos; S. Nicolis
2005-10-06T23:59:59.000Z
We construct unitary evolution operators on a phase space with power of two discretization. These operators realize the metaplectic representation of the modular group SL(2,Z_{2^n}). It acts in a natural way on the coordinates of the non-commutative 2-torus, T_{2^n}^2$ and thus is relevant for non-commutative field theories as well as theories of quantum space-time. The class of operators may also be useful for the efficient realization of new quantum algorithms.
Chiral gap effect in curved space
Antonino Flachi; Kenji Fukushima
2015-05-29T23:59:59.000Z
We discuss a new type of QCD phenomenon induced in curved space. In the QCD vacuum, a mass-gap of Dirac fermions is attributed to the spontaneous breaking of chiral symmetry. If the curvature is positive large, the chiral condensate melts but a chiral invariant mass-gap can still remain, which we name the chiral gap effect in curved space. This leads to decoupling of quark deconfinement which implies a view of black holes surrounded by a first-order QCD phase transition.
Space Electronics and Signal Processing (ISR-4)
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over Our Instagram Secretary Moniz9MorganYouofSolvingexplore correlation613Space4 Space
School of Engineering Space Policy Approved, December, 2012
Muzzio, Fernando J.
School of Engineering Space Policy Â Approved, December, 2012 Introduction: Space is a resource periodically. The School of Engineering's space policy is proactive and consistent with mission, strategic and anticipated school need. Strategic objectives will inform space decisions. The School endorses
Dr. Thomas A. Siewert IN-SPACE WELDING
Eagar, Thomas W.
) ) Dr. Thomas A. Siewert IN-SPACE WELDING Visions & Realities presented to Thirtieth Space This paperestablishes the value of having an in-space welding capability and identifies its applications, both near, Plasma Arc, and Laser Beam, are examined against the criteria for an in-space welding system. Research
Complementary Space for Enhanced Uncertainty and Dynamics Visualization
Texas at Austin, University of
of complementary space, i.e. the space exterior to but still "near" the surface in question. In this paper, we showComplementary Space for Enhanced Uncertainty and Dynamics Visualization Chandrajit Bajaj, Andrew to it. (a) A primal space visualization of the first time step with the heme group identified. (b
National Aeronautics and Space Administration Advanced Exploration Systems
Waliser, Duane E.
affordability and drive a rapid pace of progress. · Infuse new technologies developed by the Space Technology
Snyder noncommutative space-time from two-time physics
Romero, Juan M.; Zamora, Adolfo [Instituto de Ciencias Nucleares, UNAM, Apartado Postal 70-543, Mexico DF (Mexico)
2004-11-15T23:59:59.000Z
We show that the two-time physics model leads to a mechanical system with Dirac brackets consistent with the Snyder noncommutative space. A Euclidean version of this space is also obtained and it is shown that both spaces have a dual system describing a particle in a curved space.
About the Cover Welcome to our Space Science
with Los Alamos radiation detection and space-environment instruments. The Vela series of satellites, which
SPACE PLANNING & OPERATIONS UNIVERSITY OF PENNSYLVANIA SCHOOL OF MEDICINE
Bushman, Frederic
SPACE PLANNING & OPERATIONS UNIVERSITY OF PENNSYLVANIA SCHOOL OF MEDICINE Policy & Procedure a centralized scheduling system managed by Space Planning & Operations (SPO) with the intention of maximizing use of available space to meet educational space demands. Purpose: The purpose of this policy
SPACE PLANNING & OPERATIONS University of Pennsylvania School of Medicine
Bushman, Frederic
SPACE PLANNING & OPERATIONS University of Pennsylvania School of Medicine Policy & Procedure: Public Space Use and Scheduling 12 May 2003 PLEASE NOTE THAT THIS POLICY IS CURRENTLY UNDER REVISION Description: School of Medicine Public Space (list defined below) is being centrally scheduled by Space
Research Space Use Standards Policy 2.500
Acton, Scott
Research Space Use Standards Policy 2.500 Page 1 Research Space Use Standards Date: November: Department chairs and center directors who have research laboratory space assigned to their unit. Reason for Policy: This policy was developed to help address a research space shortage in the School of Medicine
CECS Space Request Form Version: August 8, 2012
Wu, Shin-Tson
CECS Space Request Form Version: August 8, 2012 COLLEGE OF ENGINEERING AND COMPUTER SCIENCE SPACE COMMITTEE Unit submitting space request (please check one): CECE EECS-CS EECS-ECE IEMS MAE MSE This request for space in ENGR/ENG2/HEC is a (please check one): New request (must be submitted no later than 2 weeks
Space Request /Assignment Process University of Nebraska -Lincoln
Farritor, Shane
Space Request /Assignment Process University of Nebraska - Lincoln Approved by Chancellor 08/15/2005 Department / Unit Completes IRP Web-based request form Department "triggers" a change to space through, different, and/or additional space Notices sent from IRP to initiating d t t d ffi Does Request Alter Space
university-logo Affine space forms and hyperbolic geometry
Goldman, William
university-logo Affine space forms and hyperbolic geometry 3-dimensional affine space forms Mathematics Department Colloquium University of Illinois, Chicago #12;university-logo Affine space forms one commensurability class. #12;university-logo Affine space forms and hyperbolic geometry Euclidean
university-logo Affine space forms and hyperbolic geometry
Goldman, William
university-logo Affine space forms and hyperbolic geometry 3-dimensional affine space forms University of Singapore #12;university-logo Affine space forms and hyperbolic geometry Euclidean manifolds. #12;university-logo Affine space forms and hyperbolic geometry Euclidean manifolds When can a group G
Optical Technology Needs for Future Space Telescopes
Van Stryland, Eric
Optical Technology Needs for Future Space Telescopes H. Philip Stahl, Ph.D. #12;Prelude systems. Synergistic integration of Earth observations & models. #12;Sun-Solar System Connection - investigate dark energy Structure and Evolution: Pathways to Life Program How Did we Get Here - follow
NEW SPACES FOR LEARNIN ADVANCED LABORATORIE
Calgary, University of
ENGINEERING ENVIRO THIS CAMPAIGN WILL STRENGTHEN THE SCHULICH SCHOOL OF ENGINEERING WITH A SPACE THAT INTEGRATES ITS ALREADY EXCELLENT PEOPLE AND PROGRAMS. THE AMPLIFYING IMPACT OF THIS INVESTMENT, helping the nation and making an impact globally. This is no small footprint. At the same time, the school
High performance, close-spaced thermionic converters
Dick, R.S.; Britt, E.J.; Fitzpatrick, G.O.; McVey, J.B.
1983-08-01T23:59:59.000Z
Near ideal performance in a Thermionic Energy Converter (TEC) can be obtained using extremely small (< 10 microns) interelectrode spacings. Previous efforts to build such converters have encountered engineering problems. A new type of converter, called SAVTEC (for Self-Adjusting, Versatile Thermionic Energy Converter) has been developed at Rasor Associates, Inc., as a practical way to achieve small spacings. It has been demonstrated to deliver improved performance over conventional, ignited-mode converters. A series of individual SAVTEC's have been built and tested. Two general configurations were built: in the first a single emitter support lead (0.25 mm wire) passes through a hole in the center of the collector, with the emitter being welded to it. In the second three smaller wires replace the center wire and are welded to the emitter perimeter. These converters have shown reliable, temperature controlled spacings of the emitter and collector. Reproducible spacing of 10 microns (0.4 mils) were achieved on several converters. This paper presents details of SAVTEC converter construction and performance, including volt-ampere curves.
Barycenters in the Wasserstein space Martial Agueh
Carlier, Guillaume
Barycenters in the Wasserstein space Martial Agueh , Guillaume Carlier August 17, 2010 Abstract in the theory of Department of Mathematics and statistics University of Victoria, Victoria, BC, PO Box 3060 STN CSC Victoria, BC, V8W 3R4, CANADA, agueh@math.uvic.ca. CEREMADE, UMR CNRS 7534, UniversitÂ´e Paris IX
REMARKS FOR ADMINISTRATOR BOLDEN NATIONAL SPACE SOCIETY
Waliser, Duane E.
exploration plan, one that #12;2 seeks to rely on private industry to take over transportation to low- Earth and Space Museum. Private industry control of access to low Earth orbit (LEO) is rapidly becoming a reality; we continue to make tangible progress on the heavy lift rocket and the Orion crew exploration vehicle
MIT Nuclear Space Research Andrew C. Kadak
SELENE MIT Nuclear Space Research Andrew C. Kadak Professor of the Practice Nuclear Science with Nuclear Energy Selene - Sodium-Cooled Epithermal Long-term Exploration Nuclear Engine (MS thesis) The Martian Surface Reactor: An Advanced Nuclear Power Station for Manned Extraterrestrial Exploration
2010 RAL Space Solar Impacts on Earth
© 2010 RAL Space Solar Impacts on Earth: Revealed by NASA's Solar Dynamics Observatory & STEREO minimum for a century: · Why? What happened? · What does that mean for the Earth? · Will the next build up cycle begins... The Events of 1-4 August 2010: A Close Shave for the Earth! 1 August 2010 The day
Naval Research Laboratory Stennis Space Center
Naval Research Laboratory Stennis Space Center Mississippi 39529 www7320.nrlssc.navy.mil/ Ocean Ocean prediction technology The Naval Research Laboratory (NRL) is the US Navy corporate laboratory, dedicated to addressing Navy unique problems and enabling the Navy to operate efficiently and safely. Unique
Bose-Einstein Condensation in Compactified Spaces
Kiyoshi Shiraishi
2012-11-26T23:59:59.000Z
We discuss the thermodynamic potential of a charged Bose gas with the chemical potential in arbitrary dimensions. The critical temperature for Bose-Einstein condensation is investigated. In the case of the compactified background metric, it is shown that the critical temperature depends on the size of the extra spaces. The asymmetry of the "Kaluza-Klein charge" is also discussed.
Event and Meeting Space Brown Garden
Event and Meeting Space Guide 2011 Brown Garden -Accomodates up to 100 People -Outdoor Location -Accomodates up to 126 people in the pews, and 100 in chairs, totaling 226 people. Farnsworth Pavilion -Accomodates up to 100 People -Also serves as art gallery -Located on the 1st Floor #12;Grand Hall -Accomodates
Spaces of Analytic Functions and Their Applications
Mitkovski, Mishko
2011-10-21T23:59:59.000Z
? . . . . . . . . . . . . . . . . . . . 12 2.1.8. de Branges spaces BE . . . . . . . . . . . . . . . . 14 2.2. Dilation theory . . . . . . . . . . . . . . . . . . . . . . . . 16 2.2.1. Discrete case . . . . . . . . . . . . . . . . . . . . . 16 2.2.2. Continuous case... operators . 25 3.3. Criterion for l2-independence . . . . . . . . . . . . . . . . 26 3.4. Radius of dependence . . . . . . . . . . . . . . . . . . . . 30 3.5. Criterion for Riesz sequences . . . . . . . . . . . . . . . . 33 vii CHAPTER Page 3...
Citizen Report National Aeronautics and Space Administration
Citizen Report National Aeronautics and Space Administration Dryden Flight Research Center A look/Carla Thomas #12;Citizen Report Fiscal Year 2012 Dryden Flight Research Center, located on the western edge the low-speed stability and control of a low-noise version of a proposed future Hybrid Wing Body aircraft
Toolbox Safety Talk Confined Spaces in Agriculture
Pawlowski, Wojtek
and engulfment Toxic silo gas (Nitrogen Dioxide NO2) Hazardous energy sources (augers and moving parts) Grain displace oxygen Methane (potentially explosive) and Carbon Dioxide may also displace oxygen Wells Oxygen. Examples of confined spaces commonly found on farms include silos, grain storage bins, slury tanks
REACTIVE ENVIRONMENTS AND AUGMENTED MEDIA SPACES
Cooperstock, Jeremy R.
REACTIVE ENVIRONMENTS AND AUGMENTED MEDIA SPACES by Jeremy R. Cooperstock A thesis submitted in conformity with the requirements for the degree of Doctor of Philosophy Graduate Department of Electrical and Computer Engineering University of Toronto Â© Copyright by Jeremy R. Cooperstock, 1996 #12;ii REACTIVE
In the microgravity environment of space, the
Waliser, Duane E.
-strength alloys and temperature- resistant glasses and ceramics for building everything from better electric power grown in NASA's bioreactor system provide scientists with invaluable information about treatments not provide three-dimensional models. 2. The space-based bioreactor grows three-dimensional tumors with 10
Geometrical transformations in higher dimensional Euclidean spaces
Sanyal, Amit Kumar
2001-01-01T23:59:59.000Z
- lated in the natural compactification of the vector space of real symmetric n x n matrices, called the Lagrange-Grassmann manifold. '4 Radon's formula for the solution of the SRDE' ' is shown to be related to the spectral decomposition (eigenvector...
National Aeronautics and Space Administration November 2010
the overall technology investment strategy and prioritization of NASA's space technology activities. Unconventional launch technolo- gies include systems that do not rely solely on on- board energy for launch motors (SRMs) have many advan- tages over liquid systems such as high-energy den- sity and long
National Aeronautics and Space Administration April 2012
Council Reports TA08-28 5.1. NRC Recommended Revisions to the TABS TA08-29 5.2. NRC Prioritization TA08 and prioritization of NASA's space technology activities. This document presents the DRAFT Technology Area 08 input, as well as any other particles, electromagnetic fields, both DC and AC, acoustic energy, seismic energy
Automated Design Space Exploration with Aspen
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Spafford, Kyle L.; Vetter, Jeffrey S.
2015-01-01T23:59:59.000Z
Architects and applications scientists often use performance models to explore a multidimensional design space of architectural characteristics, algorithm designs, and application parameters. With traditional performance modeling tools, these explorations forced users to first develop a performance model and then repeatedly evaluate and analyze the model manually. These manual investigations proved laborious and error prone. More importantly, the complexity of this traditional process often forced users to simplify their investigations. To address this challenge of design space exploration, we extend our Aspen (Abstract Scalable Performance Engineering Notation) language with three new language constructs: user-defined resources, parameter ranges, and a collection ofmore »costs in the abstract machine model. Then, we use these constructs to enable automated design space exploration via a nonlinear optimization solver. We show how four interesting classes of design space exploration scenarios can be derived from Aspen models and formulated as pure nonlinear programs. The analysis tools are demonstrated using examples based on Aspen models for a three-dimensional Fast Fourier Transform, the CoMD molecular dynamics proxy application, and the DARPA Streaming Sensor Challenge Problem. Our results show that this approach can compose and solve arbitrary performance modeling questions quickly and rigorously when compared to the traditional manual approach.« less
library.syr.edu Spaces and Places
McConnell, Terry
library.syr.edu #12;Spaces and Places Bird Library, the largest library on campus, welcomes over sciences, library administrative offices, the Special Collections Research Center, and the library café, Pages. Other library facilities include the Carnegie Library, the Geology Library in Heroy
Doctoral Programs Atmospheric, Oceanic & Space Sciences
Eustice, Ryan
University of Michigan Space Research Building 2455 Hayward Street Ann Arbor, MI 48109-2143 aoss Katherine E. White, Ann Arbor ©The Regents of the University of Michigan Research areas Atmospheric Science Atmospheric Dynamics Climate, Climate Modeling & Climate Change Clouds & Precipitation Paleoclimate, Ice
A Generalization in Space of Jung's Theorem
Florentin Smarandache
2007-07-13T23:59:59.000Z
Let's have $n$ points in the space such that the maximum distance between any of them is $a$. We prove that there exists a sphere of radius $r \\leq a \\frac{\\sqrt(6)}{4}$ that contains in its interior or on its surface all these points. [This is a generalization of Jung's theorem that he designed for a plane.
Space Exploration and the Benefits to Mankind
Moser, T.L.; Freitag, R.; Schneider, W.C.
1990-10-01T23:59:59.000Z
Paper presented at the 41st Congress of the International Astronautical Federation in Dresden, GDR in October 1990. This paper analyzes the past challenges of the space program's multi-national cooperative agreements and examines the challenges of the future as we quickly become a global society. Cross Reference ESD-T1.
Information in Virtual Spaces Susanne Riehemann
Zalta, Edward N.
as a result of developments in immersive interactive virtual 3D spaces, geographic information systems with these visualizations and by studying automatic verbalization of virtual events and automatic creation of virtual events that the user has control over viewpoints and can manipulate data or a
Going Space Diverse Renato Lo Cigno
Lo Cigno, Renato Antonio
the diversity to increase throughput, only to improve reliability locigno@disi.unitn.it 7 #12;SISO, MISO, SIMO "explored" space diversity techniques either to improve reliability or to increase throughput (more later) n flows can be used to n Increase throughput n Increase data reliability n 802.11n allows up to 4 antennas
Going Space Diverse Renato Lo Cigno
Lo Cigno, Renato Antonio
to increase throughput, only to improve reliability locigno@disi.unitn.it 7 SISO, MISO, SIMO, MIMO locigno" space diversity techniques either to improve reliability or to increase throughput (more later) n Make can be used to n Increase throughput n Increase data reliability n 802.11n allows up to 4 antennas n
Going Space Diverse Renato Lo Cigno
Lo Cigno, Renato Antonio
to increase throughput, only to improve reliability locigno@disi.unitn.it 7 #12;SISO, MISO, SIMO, MIMO locigno" space diversity techniques either to improve reliability or to increase throughput (more later) n Make flows can be used to n Increase throughput n Increase data reliability n 802.11n allows up to 4 antennas
Averages in vector spaces over finite fields
Wright J.; Carbery A.; Stones B.
2008-01-01T23:59:59.000Z
We study the analogues of the problems of averages and maximal averages over a surface in R-n when the euclidean structure is replaced by that of a vector space over a finite field, and obtain optimal results in a number ...
JPL S neii space simulator starts its
Greer, Julia R.
as much as anyone. 25 #12;The Month . . . continued solar panels extended. The space environment simu of the tower contains a solar simulation unit which is designed to simulate the varying intensity of sunlight of its kind in the United States, consists of a 10,000-square-foot building to house offices, a control
Phase Space and Jet Definitions in SCET
William Man-Yin Cheung; Michael Luke; Saba Zuberi
2009-10-13T23:59:59.000Z
We discuss consistent power counting for integrating soft and collinear degrees of freedom over arbitrary regions of phase space in the soft-collinear effective theory (SCET), and illustrate our results at one loop with several jet algorithms: JADE, Sterman-Weinberg and k_T. Consistently applying SCET power-counting in phase space, along with non-trivial zero-bin subtractions, prevents double-counting of final states. The resulting phase-space integrals over soft and collinear regions are individually ultraviolet divergent, but the phase-space ultraviolet divergences cancel in the sum. Whether the soft and collinear contributions are individually infrared safe depends on the jet definition. We show that while this is true at one loop for JADE and Sterman-Weinberg, the k_T algorithm does not factorize into individually infrared safe soft and collinear pieces in dimensional regularization. We point out that this statement depends on the ultraviolet regulator, and that in a cutoff scheme the soft functions are infrared safe.
Space Efficient Secret Sharing: A Recursive Approach
1 Space Efficient Secret Sharing: A Recursive Approach Abhishek Parakh and Subhash Kak Abstract This paper presents a k-threshold secret sharing technique that distributes a secret S into shares of size |S| k-1 , where |S| denotes the secret size. This bound is close to the optimal bound of |S| k
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION APOLLO EXPERIMENTS
Rathbun, Julie A.
.·... .. ..·.·.·.::::::::::::::::::::::: :::::::::::::::::::::::·.·.·.·.·.·.·.·.·.·.·.·::::::::::::::::::::::: :·:·:·:·:·:·:·:·:·:·:·: ·:·:·:·:·:·:·:·:·:·:·:· NATIONAL AERONAUTICS AND SPACE ADMINISTRATION APOLLO EXPERIMENTS PROGRAM REVIEW LUNAR SURFACE EXPERIMENTS;9:30 10:00 12:00 AGENDA APOLLO EXPERIMENTS PROGRAM REVIEW FEBRUARY 17 - 18, 1972 MSC, BLDG. 2, ROOM 602 THURSDAY, FEBRUARY 17, 1972 LUNAR SURFACE EXPERIMENTS - 10:00 A. MISSION ANOMALIES - 11:30 B. APOLLO 16, 17
Apollo and the Space Race! Interplanetary Travel!
Stengel, Robert F.
Seminar 6! Apollo and the Space Race! Interplanetary Travel! FRS 104, Princeton University! Robert to image makers" !! Apollo: Greatest peace-time commitment by Congress in history" !! McNamara: Strict/65" 12/65" 3/66" 6/66" 7/66" 9/66" 11/66" #12;Racing Apollo: The Russian Perspective! The Odds Were
COMMUNITY SPACE MONITOR (CSM) APPLICATION Thank you for applying for the Community Space Monitor, .docx) and PDF (.pdf) format only. #12;Residence Life Updated August 2014 -1 of 3- Community Space Monitor: Job Description IDENTIFICATION Position Title: Community Space Monitor Department: Residence Life
Holsinger, Kent
EHS 1/2012 Approved Space Heaters In order to ensure that all space heaters meet current safety approved a limited selection of space heaters for use within the University, which are available at Central Stores. The following Space Heaters are approved for use in University of Connecticut buildings provided
SPACE WEATHER, VOL. 11, 529541, doi:10.1002/swe.20092, 2013 A survey of customers of space
Schrijver, Karel
SPACE WEATHER, VOL. 11, 529541, doi:10.1002/swe.20092, 2013 A survey of customers of space weather August 2013; published 24 September 2013. [1] We present an analysis of the users of space weather information based on 2783 responses to an online survey among subscribers of NOAA's Space Weather Prediction
National Aeronautics and Space Administration Lyndon B. Johnson Space Center January | 2010
be proud of. You will read about many of them in this special Year in Review issue of Roundup: The 2009 Year in Review. Photo of the month: Just in time for the holidays: a Hubble Space Telescope
States in the Hilbert space formulation and in the phase space formulation of quantum mechanics
Tosiek, J., E-mail: tosiek@p.lodz.pl; Brzykcy, P., E-mail: 800289@edu.p.lodz.pl
2013-05-15T23:59:59.000Z
We consider the problem of testing whether a given matrix in the Hilbert space formulation of quantum mechanics or a function considered in the phase space formulation of quantum theory represents a quantum state. We propose several practical criteria for recognising states in these two versions of quantum physics. After minor modifications, they can be applied to check positivity of any operators acting in a Hilbert space or positivity of any functions from an algebra with a ?-product of Weyl type. -- Highlights: ? Methods of testing whether a given matrix represents a quantum state. ? The Stratonovich–Weyl correspondence on an arbitrary symplectic manifold. ? Criteria for checking whether a function on a symplectic space is a Wigner function.
Quantization of Space and Time in 3 and in 4 Space-time Dimensions
G. 't Hooft
1996-08-16T23:59:59.000Z
The fact that in Minkowski space, space and time are both quantized does not have to be introduced as a new postulate in physics, but can actually be derived by combining certain features of General Relativity and Quantum Mechanics. This is demonstrated first in a model where particles behave as point defects in 2 space dimensions and 1 time, and then in the real world having 3+1 dimensions. The mechanisms in these two cases are quite different, but the outcomes are similar: space and time form a (non-cummutative) lattice. These notes are short since most of the material discussed in these lectures is based on two earlier papers by the same author (gr-qc/9601014 and gr-qc/9607022), but the exposition given in the end is new.
Reyna, Baraquiel
2011-10-21T23:59:59.000Z
The complexity and amount of medical hardware needed by National Aeronautics and Space Administration (NASA) constantly shifts with mission requirements. Early missions such as Mercury, Gemini, and Apollo required minimal, relatively non...
Momentum space metric, non-local operator, and topological insulators
Shunji Matsuura; Shinsei Ryu
2010-07-13T23:59:59.000Z
Momentum space of a gapped quantum system is a metric space: it admits a notion of distance reflecting properties of its quantum ground state. By using this quantum metric, we investigate geometric properties of momentum space. In particular, we introduce a non-local operator which represents distance square in real space and show that this corresponds to the Laplacian in curved momentum space, and also derive its path integral representation in momentum space. The quantum metric itself measures the second cumulant of the position operator in real space, much like the Berry gauge potential measures the first cumulant or the electric polarization in real space. By using the non-local operator and the metric, we study some aspects of topological phases such as topological invariants, the cumulants and topological phase transitions. The effect of interactions to the momentum space geometry is also discussed.
Entropy of Quantum Fields in de Sitter Space-time
M. V. Takook
2014-08-15T23:59:59.000Z
The quantum states or Hilbert spaces for the quantum field theory in de Sitter space-time are studied on ambient space formalism. In this formalism, the quantum states are only depended $(1)$ on the topological character of the de Sitter space-time, {\\it i.e.} $\\R \\times S^3$, and $(2)$ on the homogeneous spaces which are used for construction of the unitary irreducible representation of de Sitter group. A compact homogeneous space is chosen in this paper. The unique feature of this homogeneous space is that its total number of quantum states, ${\\cal N}$, is finite although the Hilbert space has infinite dimensions. It is shown that ${\\cal N}$ is a continuous function of the Hubble constant $H$ and the eigenvalue of the Casimir operators of de Sitter group. The entropy of the quantum fields on this Hilbert space have been calculated which is finite and invariant for all inertial observers on the de Sitter hyperboloid.
Wigner spacing distribution in classical mechanics
Jamal Sakhr
2014-07-09T23:59:59.000Z
The Wigner spacing distribution has a long and illustrious history in nuclear physics and in the quantum mechanics of classically chaotic systems. In this paper, a long-overlooked connection between the Wigner distribution and classical chaos in two-degree-of-freedom (2D) conservative systems is introduced. In the specific context of fully chaotic 2D systems, the hypothesis that typical pseudotrajectories of a canonical Poincar\\'{e} map have a Wignerian nearest-neighbor spacing distribution (NNSD), is put forward and tested. Employing the 2D circular stadium billiard as a generic test case, the NNSD of a typical pseudotrajectory of the Birkhoff map is shown to be in excellent agreement with the Wigner distribution. The relevance of the higher-order Wigner surmises from random matrix theory are also illustrated.
Understanding the Columbia Space Shuttle Accident
Osheroff, Doug (Stanford University) [Stanford University
2004-06-16T23:59:59.000Z
On February 1, 2003, the NASA space shuttle Columbia broke apart during re-entry over East Texas at an altitude of 200,000 feet and a velocity of approximately 12,000 mph. All aboard perished. Prof. Osheroff was a member of the board that investigated the origins of this accident, both physical and organizational. In his talk he will describe how the board was able to determine with almost absolute certainty the physical cause of the accident. In addition, Prof. Osherhoff will discuss its organizational and cultural causes, which are rooted deep in the culture of the human spaceflight program. Why did NASA continue to fly the shuttle system despite the persistent failure of a vital sub-system that it should have known did indeed pose a safety risk on every flight? Finally, Prof. Osherhoff will touch on the future role humans are likely to play in the exploration of space.
Polymer quantization versus the Snyder noncommutative space
M. A. Gorji; K. Nozari; B. Vakili
2015-06-10T23:59:59.000Z
We study a noncanonical Hilbert space representation of the polymer quantum mechanics. It is shown that Heisenberg algebra get some modifications in the constructed setup from which a generalized uncertainty principle will naturally come out. Although the extracted physical results are the same as those obtained from the standard canonical representation, the noncanonical representation may be notable in view of its possible connection with the generalized uncertainty theories suggested by string theory. In this regard, by considering an Snyder-deformed Heisenberg algebra we show that since the translation group is not deformed it can be identified with a polymer-modified Heisenberg algebra. In classical level, it is shown the noncanonical Poisson brackets are related to their canonical counterparts by means of a Darboux transformation on the corresponding phase space.
Polymer quantization versus the Snyder noncommutative space
Gorji, M A; Vakili, B
2015-01-01T23:59:59.000Z
We study a noncanonical Hilbert space representation of the polymer quantum mechanics. It is shown that Heisenberg algebra get some modifications in the constructed setup from which a generalized uncertainty principle will naturally come out. Although the extracted physical results are the same as those obtained from the standard canonical representation, the noncanonical representation may be notable in view of its possible connection with the generalized uncertainty theories suggested by string theory. In this regard, by considering an Snyder-deformed Heisenberg algebra we show that since the translation group is not deformed it can be identified with a polymer-modified Heisenberg algebra. In classical level, it is shown the noncanonical Poisson brackets are related to their canonical counterparts by means of a Darboux transformation on the corresponding phase space.
Practical free-space quantum cryptography
Hughes, R.J.; Buttler, W.T.; Kwiat, P.G.; Lamoreaux, S.K.; Luther, G.G.; Morgan, G.L.; Nordholt, J.E.; Peterson, C.G.; Simmons, C.M.
1998-12-01T23:59:59.000Z
An experimental free-space quantum key distribution (QKD) system has been tested over an outdoor optical path of {approx} 1 km under nighttime conditions at Los Alamos National Laboratory. This system employs the Bennett 92 protocol; here the authors give a brief overview of this protocol, and describe the experimental implementation of it. An analysis of the system efficiency is presented, as well as a description of the error detection protocol, which employs a two-dimensional parity check scheme. Finally, the susceptibility of this system to eavesdropping by various techniques is determined, and the effectiveness of privacy amplification procedures is discussed. The conclusions are that free-space QKD is both effective and secure; possible applications include the rekeying of satellites in low earth orbit.
Historical flight qualifications of space nuclear systems
Bennett, G.L. [Metaspace Enterprises 5000 Butte Road Emmett, Idaho83617-9500 (United States)
1997-01-01T23:59:59.000Z
An overview is presented of the qualification programs for the general-purpose heat source radioisotope thermoelectric generators (GPHS-RTGs) as developed for the Galileo and Ulysses missions; the SNAP-10A space reactor; the Nuclear Engine for Rocket Vehicle Applications (NERVA); the F-1 chemical rocket engine used on the Saturn-V Apollo lunar missions; and the Space Shuttle Main Engines (SSMEs). Some similarities and contrasts between the qualification testing employed on these five programs will be noted. One common thread was that in each of these successful programs there was an early focus on component and subsystem tests to uncover and correct problems. {copyright} {ital 1997 American Institute of Physics.}
Hydrogen atom in rotationally invariant noncommutative space
Kh. P. Gnatenko; V. M. Tkachuk
2014-11-03T23:59:59.000Z
We consider the noncommutative algebra which is rotationally invariant. The hydrogen atom is studied in a rotationally invariant noncommutative space. We find the corrections to the energy levels of the hydrogen atom up to the second order in the parameter of noncommutativity. The upper bound of the parameter of noncommutativity is estimated on the basis of the experimental results for 1s-2s transition frequency.
Generalised hyperbolicity in singular space-times
C J S Clarke
1997-04-25T23:59:59.000Z
A new concept analogous to global hyperbolicity is introduced, based on test fields. It is shown that the space-times termed here ``curve integrable'' are globally hyperbolic in this new sense, and a plausibility argument is given suggesting that the result applies to shell crossing singularities. If the assumptions behind this last argument are valid, this provides an alternative route to the assertion that such singularities do not violate cosmic censorship.
Fidelity Decay for Phase Space Displacements
Diego V. Bevilaqua; Eric J. Heller
2004-09-03T23:59:59.000Z
In this letter we analyse the behavior of fidelity decay under a very specific kind of perturbation: phase space displacements. Under these perturbations, systems will decay following the Lyapunov regime only. Others universal regimes discussed in the literature are not presented in this case; instead, for small values of the perturbation we observe quantum freeze of the fidelity. We also show that it is possible to connect this result with the incoherent neutron scattering problem
Longitudinal space charge effects near transition
Pozdeyev,E.; Rodriguez, J.A.; Marti, F.; York, R.C.
2009-05-04T23:59:59.000Z
Experimental and numerical studies of the longitudinal beam dynamics in the Small Isochronous Ring (SIR) at Michigan State University revealed a fast, space-charge driven instability that did not fit the model of the negative mass instability. This paper proposes a simple analytical model explaining these results. Also, the paper compares the model to result s of experimental and numerical studies of the longitudinal beam dynamics in SIR.
Particle accelerator employing transient space charge potentials
Post, Richard F. (Walnut Creek, CA)
1990-01-01T23:59:59.000Z
The invention provides an accelerator for ions and charged particles. The plasma is generated and confined in a magnetic mirror field. The electrons of the plasma are heated to high temperatures. A series of local coils are placed along the axis of the magnetic mirror field. As an ion or particle beam is directed along the axis in sequence the coils are rapidly pulsed creating a space charge to accelerate and focus the beam of ions or charged particles.
Gaseous and particulate contamination in space
Yang, Xiaofang
1989-01-01T23:59:59.000Z
understancling of the Space Station environment. Experinrents were performed on Apollo missions 15, 16, and li to learn as nmch as possible about the induced environment. Apollo 17 carriecl an ultraviolet pectrophotorneter that vcas capable of detecting a... number column density (NCD) ol. ' 10 molecules, 'cm of atomic hyclrogen. The NCD is the concentration integrated over a line-of-sight distance. Additional contamination data. were obtained with a mass spectrometer on the Apollo 15 and 16...
Space reactor safety, 1985--1995 lessons learned
Marshall, A.C.
1995-12-31T23:59:59.000Z
Space reactor safety activities and decisions have evolved over the last decade. Important safety decisions have been made in the SP-100, Space Exploration Initiative, NEPSTP, SNTP, and Bimodal Space Reactor programs. In addition, international guidance on space reactor safety has been instituted. Space reactor safety decisions and practices have developed in the areas of inadvertent criticality, reentry, radiological release, orbital operation, programmatic, and policy. In general, the lessons learned point out the importance of carefully reviewing previous safety practices for appropriateness to space nuclear programs in general and to the specific mission under consideration.
Space reactor safety, 1985{endash}1995 lessons learned
Marshall, A.C. [Sandia National Laboratories, P.O. Box 5800, Albuquerque, New Mexico 87185 (United States)
1996-03-01T23:59:59.000Z
Space reactor safety activities and decisions have evolved over the last decade. Important safety decisions have been made in the SP-100, Space Exploration Initiative, NEPSTP, SNTP, and Bimodal Space Reactor programs. In addition, international guidance on space reactor safety has been instituted. Space reactor safety decisions and practices have developed in the areas of inadvertent criticality, reentry, radiological release, orbital operation, programmatics, and policy. In general, the lessons learned point out the importance of carefully reviewing previous safety practices for appropriateness to space nuclear programs in general and to the specific mission under consideration. {copyright} {ital 1996 American Institute of Physics.}
Detecting Noncommutative Phase Space by Aharonov-Bohm Effect
Shi-Dong Liang; Haoqi Li; Guang-Yao Huang
2015-02-02T23:59:59.000Z
Noncommutative phase space plays an essential role in particle physics and quantum gravity at the Planck scale. However, direct experimental evidence or observation to demonstrate the existence of noncommutative phase space is still lacking.We study a quantum ring in noncommutative phase space based on the Seiberg-Witten map and give the effective magnetic potential and field coming from the noncommutative phase space, which induces the persistent current in the ring. We introduce two variables as two signatures to detect the noncommutative phase space and propose an experimental scheme to detect the noncommutative phase space as long as we measure the persistent current and the external magnetic flux.
Flat Space Limit of (Higher-Spin) Cardy Formula
Max Riegler
2014-11-14T23:59:59.000Z
In this note I derive the flat space limit of the modified Cardy formula associated with inner horizons and show that it reproduces the correct Galilean conformal field theory counting of flat space cosmology microstates. l also determine the entropy of flat space cosmologies in flat space chiral gravity in this way. In addition, I derive a Cardy-like expression for flat space cosmologies with spin-3 charges and thus give a prediction for the corresponding Galilean conformal field theory counting of flat space cosmology microstates with spin-3 charges.
Superintegrable systems on spaces of constant curvature
Gonera, Cezary, E-mail: cgonera@uni.lodz.pl; Kaszubska, Magdalena
2014-07-15T23:59:59.000Z
Construction and classification of two-dimensional (2D) superintegrable systems (i.e. systems admitting, in addition to two global integrals of motion guaranteeing the Liouville integrability, the third global and independent one) defined on 2D spaces of constant curvature and separable in the so-called geodesic polar coordinates are presented. The method proposed is applicable to any value of curvature including the case of Euclidean plane, sphere and hyperbolic plane. The main result is a generalization of Bertrand’s theorem on 2D spaces of constant curvature and covers most of the known separable and superintegrable models on such spaces (in particular, the so-called Tremblay–Turbiner–Winternitz (TTW) and Post–Winternitz (PW) models which have recently attracted some interest). -- Highlights: •Classifying 2D superintegrable, separable (polar coordinates) systems on S{sup 2}, R{sup 2}, H{sup 2}. •Construction of radial, angular potentials leading to superintegrability. •Generalization of Bertrand’s theorem covering known models, e.g. Higgs, TTW, PW, and Coulomb.
Integrable Deformations of Strings on Symmetric Spaces
Timothy J. Hollowood; J. Luis Miramontes; David M. Schmidtt
2014-07-16T23:59:59.000Z
A general class of deformations of integrable sigma-models with symmetric space F/G target-spaces are found. These deformations involve defining the non-abelian T dual of the sigma-model and then replacing the coupling of the Lagrange multiplier imposing flatness with a gauged F/F WZW model. The original sigma-model is obtained in the limit of large level. The resulting deformed theories are shown to preserve both integrability and the equations-of-motion, but involve a deformation of the symplectic structure. It is shown that this deformed symplectic structure involves a linear combination of the original Poisson bracket and a generalization of the Faddeev-Reshetikhin Poisson bracket which we show can be re-expressed as two decoupled F current algebras. It is then shown that the deformation can be incorporated into the classical model of strings on R x F/G via a generalization of the Pohlmeyer reduction. In this case, in the limit of large sigma-model coupling it is shown that the theory becomes the relativistic symmetric space sine-Gordon theory. These results point to the existence of a deformation of this kind for the full Green-Schwarz superstring on AdS5 x S5.
The Parameter Space of Galaxy Formation
Bower, R G; Goldstein, M; Benson, A J; Lacey, C G; Baugh, C M; Cole, S; Frenk, C S; .,
2010-01-01T23:59:59.000Z
Semi-analytic models are a powerful tool for studying the formation of galaxies. However, these models inevitably involve a significant number of poorly constrained parameters that must be adjusted to provide an acceptable match to the observed universe. In this paper, we set out to quantify the degree to which observational data-sets can constrain the model parameters. By revealing degeneracies in the parameter space we can hope to better understand the key physical processes probed by the data. We use novel mathematical techniques to explore the parameter space of the GALFORM semi-analytic model. We base our investigation on the Bower et al. 2006 version of GALFORM, adopting the same methodology of selecting model parameters based on an acceptable match to the local bJ and K luminosity functions. The model contains 16 parameters that are poorly constrained, and we investigate this parameter space using the Model Emulator technique, constructing a Bayesian approximation to the GALFORM model that can be rapid...
SpacePy - a Python-based library of tools for the space sciences
Morley, Steven K [Los Alamos National Laboratory; Welling, Daniel T [Los Alamos National Laboratory; Koller, Josef [Los Alamos National Laboratory; Larsen, Brian A [Los Alamos National Laboratory; Henderson, Michael G [Los Alamos National Laboratory
2010-01-01T23:59:59.000Z
Space science deals with the bodies within the solar system and the interplanetary medium; the primary focus is on atmospheres and above - at Earth the short timescale variation in the the geomagnetic field, the Van Allen radiation belts and the deposition of energy into the upper atmosphere are key areas of investigation. SpacePy is a package for Python, targeted at the space sciences, that aims to make basic data analysis, modeling and visualization easier. It builds on the capabilities of the well-known NumPy and MatPlotLib packages. Publication quality output direct from analyses is emphasized. The SpacePy project seeks to promote accurate and open research standards by providing an open environment for code development. In the space physics community there has long been a significant reliance on proprietary languages that restrict free transfer of data and reproducibility of results. By providing a comprehensive, open-source library of widely used analysis and visualization tools in a free, modern and intuitive language, we hope that this reliance will be diminished. SpacePy includes implementations of widely used empirical models, statistical techniques used frequently in space science (e.g. superposed epoch analysis), and interfaces to advanced tools such as electron drift shell calculations for radiation belt studies. SpacePy also provides analysis and visualization tools for components of the Space Weather Modeling Framework - currently this only includes the BATS-R-US 3-D magnetohydrodynamic model and the RAM ring current model - including streamline tracing in vector fields. Further development is currently underway. External libraries, which include well-known magnetic field models, high-precision time conversions and coordinate transformations are wrapped for access from Python using SWIG and f2py. The rest of the tools have been implemented directly in Python. The provision of open-source tools to perform common tasks will provide openness in the analysis methods employed in scientific studies and will give access to advanced tools to all space scientists regardless of affiliation or circumstance.
advanced space transportation: Topics by E-print Network
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Undertaking a necessary step towards optical clocks in space, the EU-FP7-SPACE-2010-1 project no. 263500 (SOC2) (2011-2015) aims at two "engineering confidence", accurate...
Perceptual prototypes : towards a sensory pedagogy of space
Papadopoulou, Athina, S.M. Massachusetts Institute of Technology
2014-01-01T23:59:59.000Z
Architecture education, by being enclosed in studios and by focusing on formal qualities of spaces, has been detached from the direct experience of space and has prioritized vision over the other senses. If we are to extend ...
HVAC vs. Space Heaters: Which is More Efficient? | Department...
Broader source: Energy.gov (indexed) [DOE]
oil-filled space heater when we're only using one room. That has me wondering: is it more energy- and cost-efficient to use a space heater for 8-10 hours while keeping the...
Physically based mechanical metaphors in architectural space planning
Arvin, Scott Anthony
2004-09-30T23:59:59.000Z
Physically based space planning is a means for automating the conceptual design process by applying the physics of motion to space plan elements. This methodology provides for a responsive design process, allowing a designer to easily make decisions...
College of Arts and Sciences Space Assignment Policy (2012)
Indiana University
College of Arts and Sciences Space Assignment Policy (2012) 1. College engaged in research and creative activity The College space policy is intended to supplement and complement relevant campus policies, including the Policy
Engineering a robotic exoskeleton for space suit simulation
Meyen, Forrest Edward
2013-01-01T23:59:59.000Z
Novel methods for assessing space suit designs and human performance capabilities are needed as NASA prepares for manned missions beyond low Earth orbit. Current human performance tests and training are conducted in space ...
Characterizing Microprocessor Benchmarks Towards Understanding the Workload Design Space
John, Lizy Kurian
#12;Characterizing Microprocessor Benchmarks Towards Understanding the Workload Design Space The University of Texas at Austin December 2003 #12;Characterizing Microprocessor Benchmarks Towards #12;Characterizing Microprocessor Benchmarks Towards Understanding the Workload Design Space
Universal space-time codes from demultiplexed trellis codes
Kose, Cenk; Wesel, R D
2006-01-01T23:59:59.000Z
and A. R. Calderbank, “Space-time codes for high data ratePerformance criteria and code construction,” IEEE Trans.of space–time trellis codes,” IEEE Trans. Commun. , vol. 51,
Artificial nature : water infrastructure and its experience as natural space
Demirta?, Fatma Asl?han, 1970-
2000-01-01T23:59:59.000Z
This work is about water infrastructure and its experience as urban and natural space. It deals with the concepts of nature/geography, technology, and the integral experiential space by analyzing water dams and reservoirs ...
Measuring space systems flexibility : a comprehensive six-element framework
Nilchiani, Roshanak
2005-01-01T23:59:59.000Z
Space systems are extremely delicate and costly engineering artifacts that take a long time to design, manufacture, and launch into space and after they are launched, there is limited access to them. Millions of dollars ...
Comparative Usability Study of Two Space Logistics Analysis Tools
Lee, Chairwoo
Future space exploration missions and campaigns will require sophisticated tools to help plan and analyze logistics. To encourage their use, space logistics tools must be usable: a design concept encompassing terms such ...
Space Heating and Cooling Basics | Department of Energy
Office of Environmental Management (EM)
Homes & Buildings Space Heating and Cooling Basics Space Heating and Cooling Basics August 16, 2013 - 1:04pm Addthis A wide variety of technologies are available for heating and...
Workshop Report on Space Weather Risks and Society
Schrijver, Karel
NASA Center for AeroSpace Information 7115 Standard Drive Hanover, MD 21076-1320 #12;NationalSpace Information National Technical Information Service 7115 Standard Drive 5285 Port Royal Road Hanover, MD 21076
The bioenergetics of walking and running in space suits
Carr, Christopher E. (Christopher Edward), 1976-
2005-01-01T23:59:59.000Z
Space-suited activity is critical for human spaceflight, and is synonymous with human planetary exploration. Space suits impose kinematic and kinetic boundary conditions that affect movement and locomotion, and in doing ...
augmented space recursion: Topics by E-print Network
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
a recursively enumerable vector space over a recursive or- dered field. We show the Turing denote the n-dimensional vector space over the field F consisting of n-tuples of...
Quantifying flexibility in the operationally responsive space paradigm
Viscito, Lauren
2009-01-01T23:59:59.000Z
Designing complex space systems that will deliver value in the presence of an uncertain future is difficult. As space system lifetimes are now measured in decades, the systems face increased risk from uncertain future ...
Space Nuclear Program INL's role in energizing exploration
Idaho National Laboratory
2010-01-08T23:59:59.000Z
Idaho National Laboratory is helping make space exploration possible with the development of radioisotope power systems, which can work in areas too harsh and too isolated in space where the suns rays cannot be used for energy.
Profile of Two-Higgs-Doublet-Model Parameter Space
Abdul Wahab El Kaffas; Odd Magne Ogreid; Per Osland
2007-09-26T23:59:59.000Z
We review recent work on constraining the parameter space of the Two-Higgs-Doublet Model by theoretical and experimental results. Some characteristics of the model, in particular the distribution of masses in the surviving parameter space, are discussed.
Distributed Space-Time Cooperative Schemes for Underwater Acoustic Communications
Stojanovic, Milica
Distributed Space-Time Cooperative Schemes for Underwater Acoustic Communications Madhavan, which is a main characteristic of underwater acoustic channels. A time-reversal distributed space in oceanic research, such as [3] [4]: data collec- tion, pollution monitoring, tactical surveillance
Modified Ricci flow and asymptotically non-flat spaces
Shubhayu Chatterjee; Narayan Banerjee
2013-04-08T23:59:59.000Z
The present work extends the application of a modified Ricci flow equation to an asymptotically non flat space, namely Marder's cylindrially symmetric space. It is found that the flow equation has a solution at least in a particular case.
Working Group Report on - Space Nuclear Power Systems and Nuclear...
Working Group Report on - Space Nuclear Power Systems and Nuclear Waste Technology R&D Working Group Report on - Space Nuclear Power Systems and Nuclear Waste Technology R&D "Even...
Analysis for robotic assembly of large flexible space structures
Mangalgiri, Vickram S. (Vickram Suresh), 1979-
2004-01-01T23:59:59.000Z
Space solar power is a renewable, environment-friendly alternative to satisfy future terrestrial power needs. Space solar power stations will need to have large dimensions (on the order of hundreds of meters) to be able ...
A vanishing theorem for operators in Fock space
David Hasler; Ira Herbst
2011-07-22T23:59:59.000Z
We consider the bosonic Fock space over the Hilbert space of transversal vector fields in three dimensions. This space carries a canonical representation of the group of rotations. For a certain class of operators in Fock space we show that rotation invariance implies the absence of terms which either create or annihilate only a single particle. We outline an application of this result in an operator theoretic renormalization analysis of Hamilton operators, which occur in non-relativistic qed.
A Trade Space Model for Robotic Lunar Exploration
A Trade Space Model for Robotic Lunar Exploration Zachary James Bailey, David W. Miller June 2010 SSL # 11-10 #12;#12;A Trade Space Model for Robotic Lunar Exploration Zachary James Bailey, David W of Technology. #12;2 #12;A Trade Space Model for Robotic Lunar Exploration by Zachary James Bailey Submitted
3 FROM FRACTAL OBJECTS TO FRACTAL SPACES 49 Excerpt from
Nottale, Laurent
3 FROM FRACTAL OBJECTS TO FRACTAL SPACES 49 Excerpt from FRACTAL SPACE-TIME AND MICROPHYSICS.3-3.6 Chapter 3 FROM FRACTAL OBJECTS TO FRACTAL SPACES 3.3. Fractal Curves in a Plane. Let us now come to our first attempts to define fractals in an intrinsic way and to deal with infinities and with their non
A nuclear Frechet space consisting of C -functions and
Vogt, Dietmar
A nuclear Fr´echet space consisting of C -functions and failing the bounded approximation property Dietmar Vogt Abstract An easy and transparent example is given of a nuclear Fre´echet space failing of Grothendieck whether every nuclear Fr´echet space has the bounded approximation property was open for quite