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.
Bruce Davis; Cyrus Dastur; William E. Warren; Shawn Fitzpatrick; Christine Maurer; Rob Stevens; Terry Brennan; William Rose
2005-06-22T23:59:59.000Z
This study compared the performance of closed crawl spaces, which had sealed foundation wall vents, a sealed polyethylene film liner and various insulation and drying strategies, to traditional wall-vented crawl spaces with perimeter wall vents and polyethylene film covering 100% of the ground surface. The study was conducted at 12 owner-occupied, all electric, single-family detached houses with the same floor plan located on one cul-de-sac in the southeastern United States. Using the matched pairs approach, the houses were divided into three study groups of four houses each. Comparative data was recorded for each house to evaluate sub-metered heat pump energy consumption, relative humidity, wood moisture content, duct infiltration, house infiltration, temperature, radon, and bioaerosol levels. Findings indicated that in the humid conditions of the southeastern United States, a properly closed crawl space is a robust construction measure that produces a substantially drier crawl space and significantly reduces occupied space conditioning energy use on an annual basis.
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.
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
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 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
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
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
A unique cytoskeleton associated with crawling in the amoeboid sperm of the nematode Ascaris suum
Sol Sepsenwol; Hans Ris; Thomas M. Roberts
1989-01-01T23:59:59.000Z
Abstract. Nematode sperm extend pseudopods and pull themselves over substrates. They lack an axoneme or the actin and myosins of other types of motile cells, but their pseudopods contain abundant major sperm protein (MSP), a family of 14-kD polypeptides found exclusively in male gametes. Using high voltage electron microscopy, a unique cytoskeleton was discovered in the pseudopod of in vitro-activated, crawling sperm of the pig intestinal nematode Ascaris suum. It consists of 5-10-rim fuzzy fibers organized into 150-250nm-thick fiber complexes, which connect to each of the moving pseudopodial membrane projections, villipodia, which in turn make contact with the substrate. Individual fibers in a complex splay out radially from its axis in all directions. The centripetal ends intercalate
The Interface Space "To use the computer as a transformation device is to
Filman, Robert E.
Networked The Interface Space "To use the computer as a transformation device is to use. Of course, what daddy does most is type. Three-year-old Lisa would crawl into my lap and offer her services of the clothes-cleaning process, but it is too shallow to handle stains, dry cleaning, drying, or folding
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
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Unvented, Conditioned Attics - Building America Top Innovation...
Broader source: Energy.gov (indexed) [DOE]
The preference for a large segment of the U.S. housing industry has been to locate HVAC systems in unconditioned attics, but this is highly inefficient. The additional heat...
Unvented, Conditioned Crawlspaces - Building America Top Innovation...
Broader source: Energy.gov (indexed) [DOE]
the interior of a framed crawlspace with insulation installed. This Top Innovation profile highlights Building America research into the benefits of closed, conditioned crawlspaces...
Unvented, Conditioned Crawlspaces - Building America Top Innovation |
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 Data Center Home Page on Delicious Rank EERE:YearRound-Up from theDepartment of Dept. ofUSA RS BasicInitiativeEngines |Industry |Department of
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.
Building America Top Innovations Hall of Fame Profile ? Unvented...
Eight homes had closed crawlspaces with conditioned air supplied by the homes' HVAC systems. All had vapor retarders on the ground. Researchers measured temperature and...
Unvented Crawlspace Code Adoption - Building America Top Innovation |
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 Data Center Home Page on Delicious Rank EERE:YearRound-Up from theDepartment of Dept. ofUSA RS BasicInitiativeEngines |Industry | heatDepartment
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 Data Center Home Page on Delicious Rank EERE:YearRound-Up from theDepartment of Dept. ofUSA RS BasicInitiativeEngines |Industry |
Eliminating Humidity and Condensation Problems in University Dormitories - Case Study
Claridge, D.; Turner, W. D.; Zhu, Y.; Chen, H.; Bruner, H., Jr.; Hugghins, J.; Deng, S.
2002-01-01T23:59:59.000Z
and the crawl space to isolated hot air from tunnel and the building. ? Installed a temporary ventilation fan to ventilate the crawl space temporarily until a permanent one could be purchased. Results The excessive moisture problem has been rectified...
Schneider-Sikorsky, Patrick A
2014-01-01T23:59:59.000Z
Innovation ecosystems today are the lifeblood or the great hope of many major economies, but at the heart of these ecosystems, there are places and spaces. Silicon Valley is not just a place, but a cluster of spaces where ...
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.
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Space Nuclear Today the INL is preparing to assist with the Multi-Mission RTG (MMRTG). The INL is assigned the final assembly and testing of the RTG for the project which is...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBiSite CulturalDepartment2)isomeraseUSChargeSpace Sciences Space
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassiveSubmittedStatus Tom Fletcher,Future |Carlos ValenciaSpace Dust
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.
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
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
Nakagawa, Junko, 1975-
2002-01-01T23:59:59.000Z
How does one experience space? What kind of information do humans collect in the process of constructing space in their mind? How does one begin to understand volume, light, texture, material, smell and sense of space? The ...
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.
Space Science and Applications
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
1 Space Science and Applications Applying world-class expertise in space sciences and associated technologies to detect and characterize national security threats Contacts Group...
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
McManus, Dr. Hugh
Final Report of SSPARC: the Space Systems, Policy, and Architecture Research Consortium (Thrust II and III)
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.
Building America Whole-House Solutions for New Homes: Insight...
Office of Environmental Management (EM)
Building America research partner IBACOS to design HERS-49 homes with high-efficiency HVAC, ducts in insulated crawl spaces, raised heel trusses, dehumidifiers, and central...
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 Data Center Home Page on Delicious Rank EERE:YearRound-Up fromDepartmentTie Ltd:June 2015 < prev next >research team IBACOSCrawlspaces
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 Data Center Home Page on Delicious Rank EERE:YearRound-Up fromDepartmentTie Ltd:June 2015 < prev next >research team
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 Data Center Home Page on Delicious Rank EERE:YearRound-Up fromDepartmentTie Ltd:June 2015 < prev next >research teamhave found that in
Herman, Robert A.
1968-01-01T23:59:59.000Z
the properties of quotient spaces of metric spaces. We will use "iff" as an abbreviation for "if and only if". If f is a function from X onto Y, we will write f: X --->> Y....
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
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
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.
Chao, Alexander Wu; /SLAC
2012-03-01T23:59:59.000Z
As accelerator technology advances, the requirements on accelerator beam quality become increasingly demanding. Facing these new demands, the topic of phase space gymnastics is becoming a new focus of accelerator physics R&D. In a phase space gymnastics, the beam's phase space distribution is manipulated and precision tailored to meet the required beam qualities. On the other hand, all realization of such gymnastics will have to obey accelerator physics principles as well as technological limitations. Recent examples of phase space gymnastics include Emittance exchanges, Phase space exchanges, Emittance partitioning, Seeded FELs and Microbunched beams. The emittance related topics of this list are reviewed in this report. The accelerator physics basis, the optics design principles that provide these phase space manipulations, and the possible applications of these gymnastics, are discussed. This fascinating new field promises to be a powerful tool of the future.
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.
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...
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...
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.
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....
Egbert, Hal; Walker, Ronald; Flocchini, R.
2007-01-01T23:59:59.000Z
Kevin Shields, “Optimization of neutron tomography for rapidNEUTRON TOMOGRAPHY AND SPACE Hal Egbert, Ronald Walker, R.industrial applications[1]. Neutron Computed Tomography was
Stoll, Peter
2014-01-01T23:59:59.000Z
Edited by Markus Eichhorn frontiers of biogeography 6.2,6596 Space: the final frontier Spatial Simulation: Exploringpoints in some places, but frontiers of biogeography 6.2,
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 International Space
Waliser, Duane E.
sustainability and ensure their early incorporation in the architecture Â Apply a phased approach to exploration Partnerships Strategy Â· NASA leadership of a sustainable and affordable human space exploration of many costs (not LCC) or obtain funding or resource offsets 2. Enhance sustainability thru interdependent
National Aeronautical and Space Administration (NASA) Johnson...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Aeronautical and Space Administration (NASA) Johnson Space Flight Center National Aeronautical and Space Administration (NASA) Johnson Space Flight Center Space Shuttle Endeavour,...
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.
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
SPACE TECHNOLOGY Actual Estimate
SPACE TECHNOLOGY TECH-1 Actual Estimate Budget Authority (in $ millions) FY 2011 FY 2012 FY 2013 FY.6 29.5 29.5 29.5 29.5 29.5 29.5 Crosscutting Space Tech Development 120.4 187.7 293.8 272.1 266.6 259.7 247.0 Exploration Technology Development 144.6 189.9 202.0 215.5 215.7 214.5 216.5 Notional SPACE
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.
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.
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 ...
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 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
Utilisation d'un matriau changement de phase dans un mur Trombe sans thermocirculation (*)
Paris-Sud XI, UniversitĂ© de
. Abstract. 2014 Unvented masonry or water Trombe walls have been widely applied to passive solar space633 Utilisation d'un matĂ©riau Ă changement de phase dans un mur Trombe sans thermocirculation (*) L I S mars 1982) RĂ©sumĂ©. 2014 Les murs Trombe sans thermocirculation (murs classiques de bĂ©ton ou murs
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
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...
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.
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
Nonlinear classification of Banach spaces
Randrianarivony, Nirina Lovasoa
2005-11-01T23:59:59.000Z
Hilbert space when p> 2. We then build upon the method of this proof to show that a quasi-Banach space coarsely embeds into a Hilbert space if and only if it is isomorphic to a subspace of L0(??) for some probability space (?,B,??)....
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.
J. Madore
1996-07-26T23:59:59.000Z
A review is made of recent efforts to define linear connections and their corresponding curvature within the context of noncommutative geometry. As an application it is suggested that it is possible to identify the gravitational field as a phenomenological manifestation of space-time commutation relations and to thereby clarify its role as an ultraviolet regularizer.
STEP-UP Coaches a University Park Family to Comfort and Savings...
walls and sealed vents in the crawl space under the living room; installing a thick plastic mat over the crawlspace ground to create an airtight space; and adding insulation...
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.
National Aeronautics and Space Administration International Space Station
and technological endeavor ever undertaken, involving support from five space agencies representing 16 nations. Once's solar panels exceed the wingspan of a Boeing 777 jetliner and harness enough energy from the sunNational Aeronautics and Space Administration NASAfacts International Space Station Clearly
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
Demystifying White Spaces Xuemin Hongl
Wang, Cheng-Xiang
Demystifying White Spaces Xuemin Hongl , Cheng-Xiang Wangl , John Thompson2 , and Yan Zhang3 1Joint.wang@hw.ac.uk.john.thompson@ed.ac.uk. yanzhang@ieee.org Abstract-White spaces refer to the unused frequency voids across time or space. The vast existence of white spaces has been validated by many measurements and is widely regarded as an undesirable
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
Design guidance for play spaces
Design guidance for play spaces March 2006 Lindsey Houston, Roger Worthington, Paddy Harrop #12 Design Process 3 Play Spaces 4 Design Principles 6 Elements of Play 6 Existing Play Structures 8 Contacts, Jason Maclean, Andrew Norris, Bridgette Hall and Tania Crocket in #12;Design guidance for play spaces. 3
Geodesic spaces : momentum Groups : symmetry
Pratt, Vaughan
Geodesic spaces : momentum :: Groups : symmetry Vaughan Pratt Stanford University BLAST 2010 a Â· b denoting b rotated 90 degrees about a. End of reprise. 3. This talk; Geodesic spaces At FMCS. as points evenly spaced along a geodesic , right distributivity expresses a symmetry of about an arbitrary
Policies on Japan's Space Industry
as a strategic industry Practical space use in National Security Diplomacy ...etc Policy Administrative Structure on the Basic Space Law legislated in 2008. 1. The government sets space policy as a national strategy utilization environment Develop new markets with small size satellites and rockets Promote the serialization
National Aeronautics and Space Administration
National Aeronautics and Space Administration Launch Services Program Earth's Bridge to Space 2012 roles, getting rockets and satellites ready for flight, on their way, and all the way to orbit absolutely instrumental for the United States to have access to a dependable and secure Earth-to-space bridge
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...
A. Tartaglia
2002-01-04T23:59:59.000Z
The paper considers the problem of finding the metric of space time around a rotating, weakly gravitating body. Both external and internal metric tensors are consistently found, together with an appropriate source tensor. All tensors are calculated at the lowest meaningful approximation in a power series. The two physical parameters entering the equations (the mass and the angular momentum per unit mass) are assumed to be such that the mass effects are negligible with respect to the rotation effects. A non zero Riemann tensor is obtained. The order of magnitude of the effects at the laboratory scale is such as to allow for experimental verification of the theory.
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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest Region service area. TheEPSCI Home It is the mission of theESnetEarth, Space
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAboutScienceCareers Apply for a Job ExternalBerkeley Lab | SharesSpace
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.
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.
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.
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'.
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'.
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.
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
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.
Building America Webinar: Retrofitting Central Space Conditioning...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Control strategies to improve hydronic space heating performance Building America Webinar: Retrofitting Central Space Conditioning Strategies for Multifamily Buildings - Control...
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.
UCL DEPARTMENT OF SPACE & CLIMATE PHYSICS SPACE PLASMA PHYSICS GROUP
Anand, Mahesh
" miniaturised sensors, Â· low cost - high return due to development derived from Solar Orbiter EAS and Tech Outline Â· What is L-DEPP? Â· How are we involved? Â· Low-energy Electron and Ion Analyser (LEIA) Â· Why is LEIA necessary? Â· Potential UK benefits Â· Summary #12;UCL DEPARTMENT OF SPACE & CLIMATE PHYSICS SPACE
Physics in discrete spaces (A): Space-Time organization
P. Peretto
2010-12-29T23:59:59.000Z
We put forward a model of discrete physical space that can account for the structure of space- time, give an interpretation to the postulates of quantum mechanics and provide a possible explanation to the organization of the standard model of particles.
Atmospheric,OceanicandSpaceSciences Atmospheric, Oceanic & Space Sciences
Eustice, Ryan
of Michigan Space Research Building 2455 Hayward Street Ann Arbor, MI 48109-2143 aoss_um@umich.edu http Arbor Â©The Regents of the University of Michigan Mark Schlissel, ex officio Sequential Graduate / under/Thermosphere Physics Planetary Magnetospheres Solar & Heliospheric Physics Space Weather Aeronomy For Faculty involved
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
Waliser, Duane E.
Vehicle Mission Concept Review Complete Space Vehicle SRR Complete Partial-Throttle RBS Engine TCA Test Engine Test Completed Subscale Prop Tank Assembly Review March 2014 Space Vehicle Subsystem interim's Commercial Crew Program (CCP) is facilitating the development of safe, reliable and cost-effective human
National Aeronautics and Space Administration
Waliser, Duane E.
human-made object to enter the vast expanses between the stars. It was hardly the first history. To toast the interstellar event, TV's Stephen Colbert invited Voyager project scientist Ed Stone on his they look into deep space? For Planck, a European space telescope with technology aboard from JPL
Space Telescope Programs Hubble Observatory
Colorado at Boulder, University of
Assurance/Configuration Management Mr. Christopher Scholz EAG QA Manager #12;Space Telescope Programs Hubble Â· COS-UCB-002 QA Implementation Plan Released December 1, 1999 Â· COS-UCB-003 CM Plan released DecemberSpace Telescope Programs Hubble Observatory HST-COS FUV PER 11/8/00 FUV Detector System Quality
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
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.
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
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 ...
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
(Nuclear power engineering in space)
Cooper, R.H. Jr.
1990-06-18T23:59:59.000Z
The principal purpose of this trip was to participate in the Anniversary Specialist Conference on Nuclear Power Engineering in Space hosted by the USSR Ministry of Atomic Power Engineering and Industry. The conference was held in Obninsk, USSR. A secondary purpose of the trip was to meet with the French Commissariat A L'Energie Atomique in Paris regarding the status of their space power program.
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.
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...
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.
Dynamical 3-Space: Emergent Gravity
Reginald T Cahill
2011-02-16T23:59:59.000Z
The laws of gravitation devised by Newton, and by Hilbert and Einstein, have failed many experimental and observational tests, namely the bore hole g anomaly, flat rotation curves for spiral galaxies, supermassive black hole mass spectrum, uniformly expanding universe, cosmic filaments, laboratory G measurements, galactic EM bending, precocious galaxy formation,.. The response has been the introduction of the new epicycles: ``dark matter", ``dark energy", and others. To understand gravity we must restart with the experimental discoveries by Galileo, and following a heuristic argument we are led to a uniquely determined theory of a dynamical 3-space. That 3-space exists has been missed from the beginning of physics, although it was 1st directly detected by Michelson and Morley in 1887. Uniquely generalising the quantum theory to include this dynamical 3-space we deduce the response of quantum matter and show that it results in a new account of gravity, and explains the above anomalies and others. The dynamical theory for this 3-space involves G, which determines the dissipation rate of space by matter, and alpha, which experiments and observation reveal to be the fine structure constant. For the 1st time we have a comprehensive account of space and matter and their interaction - gravity.
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 GĂ¶ksun: April 30, 2012 #12; Physical and Numerical Space 2 Abstract Numbers
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-
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
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)
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)
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 ... 2,037...
Indexing Moving Objects by Space Filling Curves in the Dual Space
Kaiserslautern, UniversitĂ¤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.
Unique features of space reactors
Buden, D.
1990-01-01T23:59:59.000Z
Space reactors are designed to meet a unique set of requirements; they must be sufficiently compact to be launched in a rocket to their operational location, operate for many years without maintenance and servicing, operate in extreme environments, and reject heat by radiation to space. To meet these restrictions, operating temperatures are much greater than in terrestrial power plants, and the reactors tend to have a fast neutron spectrum. Currently, a new generation of space reactor power plants is being developed. The major effort is in the SP-100 program, where the power plant is being designed for seven years of full power, and no maintenance operation at a reactor outlet operating temperature of 1350 K. 8 refs., 3 figs., 1 tab.
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.
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
National Aeronautics and Space Administration Space Shuttle Era Facts
Center in Florida on April 12, 1981.Atlantis flew the final space mission, STS-135, in July 2011 into the Atlantic Ocean, retrieved and reused.The external tank is the only part of the stack not used again, who on May 11, 1792, maneuvered his ship through dangerous inland waters to explore British Columbia
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 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
systems Marshall performs basic research, matures technologies, and develops, tests, and sustains, nuclear thermal propulsion, space nuclear power systems, nuclear surface power systems and propellant: Â Apollo Program: F-1 engines from testing to flight and J-2 engines from concept development to flight
2010 RAL Space Head, Space Engineering &Technology Division
-magnetic cavity that totally excluded the solar wind plasma Â all the high energy particles were deflected around an engineer's perspective (not a plasma physicist!) a little history... #12;Â© 2010 RalSpace an Englishman-magnetosphere that would divert the high energy particles around it Â· What we have now shown is that there are local charge
Space Managment | The Ames Laboratory
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBiSite CulturalDepartment2)isomeraseUSCharge CompensationSpace5Space
Free loop spaces in topology and
ThĂ©venaz, Jacques
Free loop spaces in topology and physics Kathryn Hess What is the space of free loops? Enumeration of geodesics Hochschild and cyclic homology Homological conformal field theories Free loop spaces in topology Meeting of the Edinburgh Mathematical Society Glasgow, 14 November 2008 #12;Free loop spaces in topology
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
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 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
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...
National Aeronautics and Space Administration
Waliser, Duane E.
and harvestitslimitlessbenefits for humankind. We've really only just begun. Look up. That's where we're going! Each step generations of engineers, scientists and technologists. Join us as we unlock the mysteries of space is a remarkable achievement in its own right. And each step fosters development of new capabilities, technologies
National Aeronautics and Space Administration
Bordoni, Simona
uncertainty ! Clouds and Climate Scenarios Projected warming Climate Change Prediction #12;National of air T and CO2 -> related to intensity of ocean turbulent mixing Â· Exchanges of energy, water and carbon with the ocean/ land/ice surface are mediated by turbulence #12;National Aeronautics and Space
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
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.
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassiveSubmittedStatus Tom Fletcher,Future |Carlos Valencia
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 ...
Cumani, P; Bonvicini, V; Topchiev, N P; Adriani, O; Aptekar, R L; Arkhangelskaja, I V; Arkhangelskiy, A I; Bergstrom, L; Berti, E; Bigongiari, G; Bobkov, S G; Boezio, M; Bogomolov, E A; Bonechi, S; Bongi, M; Bottai, S; Castellini, G; Cattaneo, P W; Dedenko, G L; De Donato, C; Dogiel, V A; Gorbunov, M S; Gusakov, Yu V; Hnatyk, B I; Kadilin, V V; Kaplin, V A; Kaplun, A A; Kheymits, M D; Korepanov, V E; Larsson, J; Leonov, A A; Loginov, V A; Longo, F; Maestro, P; Marrocchesi, P S; Menshenin, A L; Mikhailov, V V; Mocchiutti, E; Moiseev, A A; Mori, N; Moskalenko, I V; Naumov, P Yu; Papini, P; Pearce, M; Picozza, P; Popov, A V; Rappoldi, A; Ricciarini, S; Runtso, M F; Ryde, F; Serdin, O V; Sparvoli, R; Spillantini, P; Suchkov, S I; Tavani, M; Taraskin, A A; Tiberio, A; Tyurin, E M; Ulanov, M V; Vacchi, A; Vannuccini, E; Vasilyev, G I; Yurkin, Yu T; Zampa, N; Zirakashvili, V N; Zverev, V G
2015-01-01T23:59:59.000Z
GAMMA-400 is a new space mission which will be installed on board the Russian space platform Navigator. It is scheduled to be launched at the beginning of the next decade. GAMMA-400 is designed to study simultaneously gamma rays (up to 3 TeV) and cosmic rays (electrons and positrons from 1 GeV to 20 TeV, nuclei up to 10$^{15}$-10$^{16}$ eV). Being a dual-purpose mission, GAMMA-400 will be able to address some of the most impelling science topics, such as search for signatures of dark matter, cosmic-rays origin and propagation, and the nature of transients. GAMMA-400 will try to solve the unanswered questions on these topics by high-precision measurements of the Galactic and extragalactic gamma-ray sources, Galactic and extragalactic diffuse emission and the spectra of cosmic-ray electrons + positrons and nuclei, thanks to excellent energy and angular resolutions.
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.
Computer aided architectural space planning
Schramek, Charles Wayne
1971-01-01T23:59:59.000Z
aspects of' the other tasks. For example, the determination of total spatial requirements requires an understanding of the organization's growth potential, acquisition of' new units or the decision to automate certain functions. Likewise... the organization, that the envir onment will not be sub ject to additional con- straints, or that the organization's objectives will not change, creating new demands on the space. There- fore it is necessary that some control function be constructed...
Continuous space-time transformations
Clément de Seguins Pazzis; Peter Šemrl
2015-02-04T23:59:59.000Z
We prove that every continuous map acting on the four-dimensional Minkowski space and preserving light cones in one direction only is either a Poincar\\'e similarity, that is, a product of a Lorentz transformation and a dilation, or it is of a very special degenerate form. In the presence of the continuity assumption the main tool in the proof is a basic result from the homotopy theory of spheres.
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.
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.
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...
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...
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
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
MAPS BETWEEN CLASSIFYING SPACES AND APPLICATIONS by
Notbohm, Dietrich
MAPS BETWEEN CLASSIFYING SPACES AND APPLICATIONS space map(BG, BH) can be reduced to the case of simply connected Lie groups. Th* *is reduc- tion method allows some applications. For example a homotopy classificatio* *n of self maps BG
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...
Ames Lab 101: Growing Crystals in Space
Trivedi, Rohit
2012-08-29T23:59:59.000Z
Rohit Trivedi, distinguished professor of materials science and engineering, discusses his research with NASA to grow crystals in space.
Building America Webinar: High Performance Space Conditioning...
Strategies for Affordable Housing Building America Webinar: High Performance Space Conditioning Systems, Part II - Air Distribution Retrofit Strategies for Affordable...
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 ...
DSm Vector Spaces of Refined Labels
W. B. Vasantha Kandasamy; Florentin Smarandache
2011-12-02T23:59:59.000Z
In this book the authors introduce the notion of DSm vector spaces of refined labels. They also realize the refined labels as a plane and a n-dimensional space. Further, using these refined labels, several algebraic structures are defined. Finally DSm semivector space or refined labels is described. Authors also propose some research problems.
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
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.
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
Doctoral Programs Atmospheric, Oceanic & Space Sciences
Eustice, Ryan
Professor; Recipient, Teaching Innovation Prize; Michigan Distinguished Professor of the Year Allison Mission to Comet 67P / Churyumov- Gerasimenko Â· Solar and Heliospheric Physics Group Â· STEREO Mission,OceanicandSpaceSciences Atmospheric, Oceanic & Space Sciences University of Michigan Space Research Building 2455 Hayward Street Ann
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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBiSite CulturalDepartment2)isomeraseUSCharge CompensationSpace5
Space Week | Department of Energy
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBiSite CulturalDepartment2)isomeraseUSChargeSpace Sciences
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...
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.
Cycle spaces in topological spaces Antoine Vella and R. Bruce Richter
Richter, R. Bruce
Cycle spaces in topological spaces Antoine Vella and R. Bruce Richter University of Waterloo 19, and simplify previous work on cycle spaces of infinite graphs. We give simple topological criteria to show that the fundamental cycles of a (generalization of a) spanning tree generate the cycle space in a connected, compact
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
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 *
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.
Superluminal transformations in complex Minkowski spaces
Ramon, C.; Rauscher, E.A.
1980-08-01T23:59:59.000Z
We calculate the mixing of real and imaginary components of space and time under the influence of superluminal boots in the x direction. A unique mixing is determined for this superluminal Lorentz transformation when we consider the symmetry properties afforded by the inclusion of three temporal directions. Superluminal transformations in complex six-dimensional space exhibit unique tachyonic connections which have both remote and local space--time event connections.
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.
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.
Space and Remote Sensing (ISR-2)
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
2 Space and Remote Sensing Developing and applying remote sensing capabilities to problems of global security and related sciences Contacts Group Leader Robert Shirey Email Deputy...
Space Electronics and Signal Processing (ISR-4)
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
4 Space Electronics and Signal Processing Developing custom sensors, instruments, and systems for applications requiring advanced detection, monitoring, or assessment technologies...
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.
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
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.
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 ...
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
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 ...
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
National Aeronautics and Space Administration Status Report
Waliser, Duane E.
Advisory Council Human Exploration and Operations Committee D. Marshall Porterfield PhD. Director, Space Life and Physical Sciences Human Exploration & Operations Mission Directorate #12;Â· Â Â Â Â· Â· Space conduct fundamental and applied research to advance basic knowledge and to support human exploration
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
Gravity in Complex Hermitian Space-Time
Ali H. Chamseddine
2006-10-09T23:59:59.000Z
A generalized theory unifying gravity with electromagnetism was proposed by Einstein in 1945. He considered a Hermitian metric on a real space-time. In this work we review Einstein's idea and generalize it further to consider gravity in a complex Hermitian space-time.
National Aeronautics and Space Administration Composite Cryotank
Christian, Eric
National Aeronautics and Space Administration Composite Cryotank Project Delivers Major Milestone A 2.4-meter-diameter propellant tank made of composite materials arrived on Nov. 20, 2012 at NASA's Marshall Space Flight Center in Huntsville, Ala., where engineers are preparing it for testing. Composite
The Bottom Line Space@Penn Upgrade
Sharp, Kim
The Bottom Line Space@Penn Upgrade Coming Soon! A project is underway to upgrade the current that allows designated users in the field to update certain elements of their space. This project, whose: Grants & Projects Â Used for invoice generation, overhead and revenue recognition, and award and project
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
National Aeronautics and Space Administration messengermichoud
in support of requirements for NASA's Space Launch System, or SLS. Multiple projects are scheduled through will stand about three stories tall once fully assem- bled. The work is scheduled for completion in June- tion of the Vertical Assembly Center. #12;World's Most Powerful Engine Blazes Path for Space Launch
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.
International Space Station: Access and Operations
flights per year Â· JAXA H-II Transfer Vehicle (HTV) and ESA Automated Transfer Vehicle (ATV) flights Â· Begin SpaceX and OSC Commercial Resupply Services (CRS) flights #12;ISS: CY 2011 Visiting Vehicle Plans*ISS: CY 2011 Visiting Vehicle Plans* Launches: RS = 10 US = 3 JAXA = 1 ESA = 1 SpaceX = 2 * As of January
National Aeronautics and Space Administration Sun
Christian, Eric
National Aeronautics and Space Administration Sun #12;National Aeronautics and Space Administration Sun LG-2001-08-527-HQ Our SUN has inspired mythology in almost all cultures, including ancient Egyptians, Aztecs, Native Americans, and Chinese. We now know that the Sun is a huge, bright sphere
Exploring Personal CoreSpace for DataSpace Yukun Li and Xiaofeng Meng
Exploring Personal CoreSpace for DataSpace Management Yukun Li and Xiaofeng Meng School increment of personal data amount, how to efficiently search Personal DataSpace(PDS) becomes an interesting. These queries can't be supported well by current personal data management tools. The aim of this paper
Medical Applications of Space Light-Emitting Diode Technology--Space Station and Beyond
Whelan, H.T.; Houle, J.M.; Donohoe, D.L.; Bajic, D.M.; Schmidt, M.H.; Reichert, K.W.; Weyenberg, G.T.; Larson, D.L.; Meyer, G.A.; Caviness, J.A.
1999-06-01T23:59:59.000Z
Space light-emitting diode (LED) technology has provided medicine with a new tool capable of delivering light deep into tissues of the body, at wavelengths which are biologically optimal for cancer treatment and wound healing. This LED technology has already flown on Space Shuttle missions, and shows promise for wound healing applications of benefit to Space Station astronauts.
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 Energy Storage TA03-16 2.2.3. Power Management & Distribution (PMAD) TA03-17 2.2.3.1. PMAD Overall TA03 activities. This document presents the DRAFT Technology Area 03 input: Space Power and Energy Storage. NASA
Pseudo-Z symmetric space-times
Mantica, Carlo Alberto, E-mail: carloalberto.mantica@libero.it [Physics Department, Universitŕ 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.
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.
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.
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.
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.
Computational procedures for weighted projective spaces
Rossi, Michele
2011-01-01T23:59:59.000Z
This is a pdf print of the homonymous Maple file, freely available at http://www.maplesoft.com/applications/view.aspx?SID=127621, providing procedures which are able to produce the toric data associated with a (polarized) weighted projective space i.e. fans, polytopes and their equivalences. More originally it provides procedures which are able to detect a weights vector Q starting from either a fan or a polytope: we will call this process the recognition of a (polarized) weighted projective space. Moreover it gives procedures connecting polytopes of a polarized weighted projective space with an associated fan and viceversa.
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
A Blended Space for Tourism: Genesee Village Country & Museum
Deussen, Oliver
A Blended Space for Tourism: Genesee Village Country & Museum Abstract Blended spaces are spaces on this enables us to provide general guidance and framework on the design of blended spaces for digital tourism. Author Keywords Design, Tourism, Blended Spaces, User Experience ACM Classification Keywords H.5.2 User
Social catalysts : embracing communication in mediated spaces
Karahalios, Kyratso G., 1972-
2004-01-01T23:59:59.000Z
Mediated communication between public spaces is a relatively new concept. One current example of this interaction is video conferencing among people within the same organization. Large scale video-conferencing walls have ...
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.
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.
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
Cohen, Ronald C.
/A Controls: ________________________________________________________________________ Energy: electrical harness on each entrant Retrieval system assembled entry rescue Company no potential or actual atmospheric hazards; and All hazards have been eliminated without entry into the space
Accelerating Cosmologies with Extended Product Spaces
Han Siong Ch'ng
2008-10-15T23:59:59.000Z
Accelerating cosmologies in extra dimensional spaces have been studied. These extra dimensional spaces are products of many spaces. The physical behaviors of accelerating cosmologies are investigated from Einstein's field equation in higher dimensional Friedmann-Robertson-Walker (FRW) universe and superstring/M theory points of view. It is found that if some assumptions of flatness are made for sector of the FRW universe, the remaining sector needs to be hyperbolic. These properties are in parallel with those found in the model of superstring/M theory. The extended product made for the superstring model did not show any more new features other than those already found. A similar accelerating phase of this product space cosmology was found with difference in numerical values of the accelerating period.
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 ...
State space models, filtering and environmental applications
KĂĽnsch, Hans Rudolf
;Section 1 Introductory Examples Postprocessing of numerical weather predictions Data assimilation for weather prediction Stochastic reaction networks Rare event estimation Basics of state space models Numerical weather predictions (MWP) are deterministic with high spatial and temporal resolution. Statistical
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
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.
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)...
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 ...
National Aeronautics and Space Administration Washington, DC
Rathbun, Julie A.
National Aeronautics and Space Administration Washington, DC NASA ADVISORY COUNCIL PLANETARY, including Discovery @15 and Satellites of the Outer Solar System. The next workshop, Planetary Atmospheres (GRAIL)--a lunar mission, Origins Spectral Interpretation, Resource Identification, and Security (OSIRIS
Geometry of Feasible Spaces of Tensors
Qi, Yang
2013-07-17T23:59:59.000Z
Due to the exponential growth of the dimension of the space of tensors V_(1)?• • •?V_(n), any naive method of representing these tensors is intractable on a computer. In practice, we consider feasible subspaces (subvarieties) which are defined...
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 ...
AMS, a particle spectrometer in space
M. Buenerd
2001-07-20T23:59:59.000Z
The results of the AMS01 experiment are reviewed. The proton flux measured below the geomagnetic cutoff is interpreted. Some Physics prospects for AMS02 on the International Space Station are outlined.
Geometrical transformations in higher dimensional Euclidean spaces
Sanyal, Amit Kumar
2001-01-01T23:59:59.000Z
Orientations and rotations in n-dimensional real Euclidean spaces (R[n]) are represented by proper orthogonal, or skew-symmetric matrices. A mathematical formulation that leads to these representations is presented. Orientations and rotations...
"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.
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.
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.
Exact Philosophy of Space-Time
Héctor Vucetich
2011-09-26T23:59:59.000Z
Starting from Bunge's (1977) scientific ontology, we expose a materialistic relational theory of space-time, that carries out the program initiated by Leibniz, and provides a protophysical basis consistent with any rigorous formulation of General Relativity. Space-time is constructed from general concepts which are common to any consistent scientific theory and they are interpreted as emergent properties of the greatest assembly of things, namely, the world.
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.
Dynamic Algorithm for Space Weather Forecasting System
Fischer, Luke D.
2011-08-08T23:59:59.000Z
for the designation as UNDERGRADUATE RESEARCH SCHOLAR April 2010 Major: Nuclear Engineering DYNAMIC ALGORITHM FOR SPACE WEATHER FORECASTING SYSTEM A Junior Scholars Thesis by LUKE DUNCAN FISCHER Submitted to the Office of Undergraduate... 2010 Major: Nuclear Engineering iii ABSTRACT Dynamic Algorithm for Space Weather Forecasting System. (April 2010) Luke Duncan Fischer Department of Nuclear Engineering Texas A&M University Research Advisor: Dr. Stephen Guetersloh...
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.
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.
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.
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
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...
'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.
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.
Before the House Science, Space, and Technology Subcommittee...
Science, Space, and Technology Subcommittee on Energy and Environment Before the House Science, Space, and Technology Subcommittee on Energy and Environment Testimony of Scott...
Modesto Memorial Hospital Space Heating Low Temperature Geothermal...
Memorial Hospital Space Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Modesto Memorial Hospital Space Heating Low Temperature Geothermal Facility...
Jackson Hot Springs Lodge Space Heating Low Temperature Geothermal...
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Walley's Hot Springs Resort Space Heating Low Temperature Geothermal...
Space Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Walley's Hot Springs Resort Space Heating Low Temperature Geothermal Facility Facility Walley's...
Senior Citizens' Center Space Heating Low Temperature Geothermal...
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Steamboat Villa Hot Springs Spa Space Heating Low Temperature...
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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...
Shoshone Motel & Trailer Park Space Heating Low Temperature Geothermal...
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Warm Springs State Hospital Space Heating Low Temperature Geothermal...
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Warner Springs Ranch Resort Space Heating Low Temperature Geothermal...
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Wiesbaden Motel & Health Resort Space Heating Low Temperature...
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Merle West Medical Center Space Heating Low Temperature Geothermal...
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Maywood Industries of Oregon Space Heating Low Temperature Geothermal...
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Active-space completely-renormalized equation-of-motioncoupled...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
space completely-renormalized equation-of-motion coupled-clusterformalism: Excited-state studies of green fluorescent Active-space completely-renormalized equation-of-motion...
Thermoelectrics: From Space Power Systems to Terrestrial Waste...
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East Middle School and Cayuga Community College Space Heating...
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SPACE UTILIZATION STUDY -EXECUTIVE SUMMARY SCHOOL OF MEDICINE & HEALTH SCIENCES
Delene, David J.
SPACE UTILIZATION STUDY - EXECUTIVE SUMMARY SCHOOL OF MEDICINE & HEALTH SCIENCES UNIVERSITY School of Medicine & Health Sciences - Space Utilization Study Grand Forks, ND EXECUTIVE SUMMARY SUITAb utilities. Â· Lackofnaturallight
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.
A Criterion Space Search Algorithm for Biobjective Mixed Integer ...
2015-01-08T23:59:59.000Z
We present the first criterion space search algorithm, the triangle splitting algorithm, for finding ... In this paper, we continue our pursuit of criterion space search.
James Webb Space Telescope: PM Lessons Applied - Eric Smith,...
James Webb Space Telescope: PM Lessons Applied - Eric Smith, Deputy Program Director, NASA James Webb Space Telescope: PM Lessons Applied - Eric Smith, Deputy Program Director,...
Before the Subcommittee on Energy -- House Science, Space, and...
Office of Environmental Management (EM)
on Energy -- House Science, Space, and Technology Committee Testimony of Christopher Smith, Acting Assistant Secretary Before the Subcommittee on Energy -- House Science, Space,...
Orbits design for Leo space based solar power satellite system.
Addanki, Neelima Krishna Murthy
2011-01-01T23:59:59.000Z
?? Space Based Solar Power satellites use solar arrays to generate clean, green, and renewable electricity in space and transmit it to earth via microwave,… (more)
Dela Peńa, 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),
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,”
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...
Indoor Chemistry: Materials, Ventilation Systems, and Occupant Activities
Morrison, G.C.
2011-01-01T23:59:59.000Z
and 1. Ferris, B.G. Nitrogen dioxide inside and outside 137reactive chemicals, such as nitrogen dioxide from unvented
The Space Power Grid: Synergy Between Space, Energy and Security Policies
Â Space solar power, renewable energy, climate policy, global warming, infrastructure, power grid and advantages of space-based versus terrestrial solar power generation. The two great advantages are (1.1% of the total solar energy falling on Earth, and conceivably, lenses in solar orbit could collect solar
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
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...
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.
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
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.
De Sitter space and perpetuum mobile
Emil T. Akhmedov; P. V. Buividovich; Douglas A. Singleton
2010-02-14T23:59:59.000Z
We give general arguments that any interacting non--conformal {\\it classical} field theory in de Sitter space leads to the possibility of constructing a perpetuum mobile. The arguments are based on the observation that massive free falling particles can radiate other massive particles on the classical level as seen by the free falling observer. The intensity of the radiation process is non-zero even for particles with any finite mass, i.e. with a wavelength which is within the causal domain. Hence, we conclude that either de Sitter space can not exist eternally or that one can build a perpetuum mobile.
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.
Embeddings and factorizations of Banach spaces
Zheng, Bentuo
2009-05-15T23:59:59.000Z
argument works in our context. 29 CHAPTER IV OPERATORS WHICH FACTOR THROUGH lscriptP OR c0 A. Introduction In [12], W. B. Johnson answered the following question about the relation between the structure of Lp and lscriptp. Question IV.A.1. Give a Banach... space condition so that if X is a subspace of Lp (1 < p < 2) which satisfies the condition, then X embeds isomorphically into lscriptp. The equivalent dual question would be: Question IV.A.2. Give a Banach space condition so that if X is a quotient of Lp...
Space and Remote Sensing (ISR-2)
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBiSite CulturalDepartment2)isomeraseUSChargeSpace Sciencesand2 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
HOMOTOPY THEORY OF CLASSIFYING SPACES OF COMPACT LIE GROUPS
Oliver, Bob
, Miller & Wilkerson ([DMW1], [DMW2]), and more recently by Notbohm (unpublished). Classifying spaces
White Space Ecosystem: A Secondary Network Operator's Perspective
Huang, Jianwei
1 White Space Ecosystem: A Secondary Network Operator's Perspective Yuan Luo, Lin Gao, and Jianwei Huang Abstract--The successful deployment of a TV white space network requires the coordination-users), which form the White Space Ecosystem. In this paper, we study the white space ecosystem from
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
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
The Pennsylvania State University Confined Space Entry Program and Procedures
Maroncelli, Mark
Â· Application Â· Reference Â· Definitions Â· Procedures - Permit-Required Confined Space Entry - Reclassification to a Non-Permit Confined Space Entry - Entry Frequency Limitations Â· Responsibilities Â· Appendix A. Typical Permit-Required Confined Spaces Â· Appendix B. Confined Space Entry Permit Â· Appendix C. University Park
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
2010 RAL Space Solar Impacts on Earth
Â© 2010 RAL Space Solar Impacts on Earth: Revealed by NASA's Solar Dynamics Observatory & STEREO minimum for a century: Â· Why? What happened? Â· What does that mean for the Earth? Â· Will the next build up cycle begins... The Events of 1-4 August 2010: A Close Shave for the Earth! 1 August 2010 Â The day
Applying Reliability Models to the Space Shuttle
Feitelson, Dror
Applying Reliability Models to the Space Shuttle Norman F. Schneidewind Ted W. Keller #12;What are Reliability Models? Reliability Models are tools that Help Us: Â· Predict software Reliability. Â· Control software Reliability. Â· Assess software Reliability. This functions let an organization determine
National Aeronautics and Space Administration Mars Reconnaissance
National Aeronautics and Space Administration Mars Reconnaissance Orbiter Arrival Press Kit March level of Mars from underground layers to the top of the atmosphere. Among them, the most powerful Mars mission, using a dish antenna meters (10 feet) in diameter and a transmitter powered by 9
(Eigen Phoneme Space (Phoneme Vector : PV)
Takiguchi, Tetsuya
PCA , , ( ) 1 MFCC [1] PCA 2 2.1 [3] (Eigen Phoneme Space : EPS) PCA [2] PCA [3] PCA (EPS) (EPS) (Phoneme Vector : PV) Fig. 1 (EPS) /a/ /i/ Â· Â· Â· PCA (EPS) 2.2 PCA PCA i Si Si = 1 N N t=1 (xi t - ÂŻxi )(xi
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.
Symmetric space description of carbon nanotubes
M. Caselle; U. Magnea
2006-01-10T23:59:59.000Z
Using an innovative technique arising from the theory of symmetric spaces, we obtain an approximate analytic solution of the Dorokhov-Mello-Pereyra-Kumar (DMPK) equation in the insulating regime of a metallic carbon nanotube with symplectic symmetry and an odd number of conducting channels. This symmetry class is characterized by the presence of a perfectly conducting channel in the limit of infinite length of the nanotube. The derivation of the DMPK equation for this system has recently been performed by Takane, who also obtained the average conductance both analytically and numerically. Using the Jacobian corresponding to the transformation to radial coordinates and the parameterization of the transfer matrix given by Takane, we identify the ensemble of transfer matrices as the symmetric space of negative curvature SO^*(4m+2)/[SU(2m+1)xU(1)] belonging to the DIII-odd Cartan class. We rederive the leading-order correction to the conductance of the perfectly conducting channel and its variance Var(log(delta g)). Our results are in complete agreement with Takane's. In addition, our approach based on the mapping to a symmetric space enables us to obtain new universal quantities: a universal group theoretical expression for the ratio Var(log(delta g)/ and as a byproduct, a novel expression for the localization length for the most general case of a symmetric space with BC_m root system, in which all three types of roots are present.
MIT Nuclear Space Research Andrew C. Kadak
SELENE MIT Nuclear Space Research Andrew C. Kadak Professor of the Practice Nuclear Science with Nuclear Energy Â Selene - Sodium-Cooled Epithermal Long-term Exploration Nuclear Engine (MS thesis) Â The Martian Surface Reactor: An Advanced Nuclear Power Station for Manned Extraterrestrial Exploration
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
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.
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.
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 cafĂ©, Pages. Other library facilities include the Carnegie Library, the Geology Library in Heroy
Toolbox Safety Talk Confined Spaces in Agriculture
Pawlowski, Wojtek
approach for preventing accidents in confined spaces is to simply perform all work from outside Hazardous energy sources (augers and moving parts) and Toxic dusts Manure Pits & Tanks Asphyxiation due displace oxygen Methane (potentially explosive) and Carbon Dioxide may also displace oxygen Wells Oxygen
Optical Technology Needs for Future Space Telescopes
Van Stryland, Eric
instruments & sensors. Future Space Telescopes will operate over broad spectrum: Gamma Rays, X-Rays, XUV and Sensors Direct Sensing of Particles, Fields and Waves See Scientific Instruments and Sensors (SIS Structure #12;NASA's Science Missions Directorate Themes: Earth Science Sun-Solar System Connection Solar
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.
SpaceX Demonstration Mission MISSION OBJECTIVES
Waliser, Duane E.
Inserted into Orbit: o Falcon 9 rocket ascends through lightning towers on the launch site without stage o Solar arrays deploy from Dragon's trunk and function properly o Dragon completes system, and radiation) found in space, especially Dragon's solar arrays, radiators, avionics, and trunk o Performance
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
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
The University of Edinburgh Space Temperature Standards
Edinburgh, University of
The University of Edinburgh Space Temperature Standards Addendum to the Energy Policy 2003C causes an estimated 8% extra energy costs / global warming gas emissions. Comfort Levels: Summer, lights and / or solar gain and all other options have been exhausted · Temperature control is required
Meter Expansion Plan Existing Multi-Space Meter
Duchowski, Andrew T.
Meter Expansion Plan 11 35 9 7 10 20 12 11 12 46 23 15 15 60 23 Existing Multi-Space Meter Split Regulations 136 New Multi-Space Meter Visitor Only New Multi-Space Meter Split Regulations KEY 97 Updated 7/8/13 11 5 #12;HAVE.HAVE. UNION DR. 1 2 3 4 5 New Multi-space Meter After: 5 Meter Spaces Regulations
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
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.
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...
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.
Space weather impacts Thank you for taking this anonymous survey on the impacts of space weather.
Schrijver, Karel
Defense / National Security Education Electric utility sector Natural resources exploration or extraction than space sciences) Satellite manufacturing or operations (other than GPS/GNSS) #12;5. What best
STAKING SPACE : planning, public space, and visions of the subaltern in the context of Kabul
Adina, Seema Ghizala
2012-01-01T23:59:59.000Z
This thesis will review how public spaces in Kabul, Afghanistan will be affected by plans for development and formalization under proposed city plans. The core argument is that these processes of development under guises ...
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.
Thermoacoustic power systems for space applications
Backhaus, S. N. (Scott N.); Tward, E. (Emanual); Pedach, M. (Michael)
2001-01-01T23:59:59.000Z
Future NASA deep-space missions will require radioisotope-powered electric generators that are just as reliable as current RTGs, but more efficient and of higher specific power (W/kg). Thermoacoustic engines can convert high-temperature heat into acoustic, or PV, power without moving parts at 30% efficiency. Consisting of only tubes and a few heat exchangers, these engines are low mass and promise to be highly reliable. Coupling a thermoacoustic engine to a low-mass, highly reliable and efficient linear alternator will create a heat-driven electric generator suitable for deep-space applications. Data will be presented on the first tests of a demonstration thermoacoustic engine designed for the 100-Watt power range.
Initial tests of thermoacoustic space power engine.
Backhaus, S. N. (Scott N.)
2002-01-01T23:59:59.000Z
Future NASA deep-space missions will require radioisotope-powered electric generators that are just as reliable as current RTGs, but more efficient and of higher specific power (Wikg). Thennoacoustic engines at the -1-kW scale have converted high-temperature heat into acoustic, or PV, power without moving parts at 30% efficiency. Consisting of only tubes and a few heat exchangers, thennoacoustic engines are low mass and promise to be highly reliable. Coupling a thennoacoustic engine to a low mass, highly reliable and efficient linear alternator will create a heat-driven electric generator suitable for deep-space applications. Conversion efficiency data will be presented on a demonstration thennoacoustic engine designed for the 1 00-Watt power range.
A study of Frechet and sequential spaces
Moore, Judy Hennessey
2012-06-07T23:59:59.000Z
: Mathematics A S ). 'U: )Y OI ' '. ". CII. '"i AI!0 S, ', "U. ', !'". L'&L S ~ACES 'I'hc s ~ ~ JU!)Y I!EIIUSSSEY I'00''~S !L B burly of 7 r!c:cj3r. L- and 3cquc&7Liat. bpases. (Aul!us b 1970) Jurly H. iloot e, I'. 7&. , Notsfjt Tptc?s BI: 1t e Ilnivcx sit... y; Div. . r c I&ed by: Dt-. Jatnes jt. Boone tn a c, eLS1. c space, I&he co?we. -. '&~, nL- sec, uences in t. he space- 67. s?1' f icienf Lo d t&eu. :1i. 71c the fo, '3ot ofry and Lo cha1!POLetcise sl 1 of the t:ol3&71&7gr ic:1l. pcot3et I...
Wigner spacing distribution in classical mechanics
Jamal Sakhr
2014-07-08T23:59:59.000Z
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.
Merging electromagnetism with space-time metric
C. A. Duarte
2014-03-10T23:59:59.000Z
In the present work, it is shown that the electromagnetism may be directly associated to the four-dimensional space-time geometry. The starting point is an analysis of the geodesic equation of general relativity where it is verified that it contains implicitly the effects of the Coulomb and the Lorentz forces. Consequently, some components of the metric tensor are identified with the components of the four-vector electromagnetic potential. Then, it is constructed a low-field equation for the electromagnetism in the same structure of the Einstein field equations for the gravitation, relating the curvature of space-time to sources of charge and current density. In this framework, all the Maxwell equations are implicit. A proof of consistency with the framework of quantum mechanics is shown.
National Aeronautics and Space Administration November 2010
Transfer TA14-14 2.2.3. Heat Rejection and Energy Storage TA14-16 2.3. Thermal Protection Systems (TPS) TADRAFT National Aeronautics and Space Administration November Â· 2010 DRAFT TheRmAl mAnAgemenT Sy.1.1. Passive Thermal Control TA14-8 2.1.2. Active Thermal Control TA14-10 2.1.3. System Integration TA14-12 2
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.
Space-Time Insight | Open Energy Information
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectric Coop, Inc Place: Missouri References: EIA FormSouthwesternSpace-Time
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.
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.
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.
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...
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.
Pedro F. Gonzalez-Diaz
2000-04-10T23:59:59.000Z
In this paper the problem of the quantum stability of the two-dimensional warp drive spacetime moving with an apparent faster than light velocity is considered. We regard as a maximum extension beyond the event horizon of that spacetime its embedding in a three-dimensional Minkowskian space with the topology of the corresponding Misner space. It is obtained that the interior of the spaceship bubble becomes then a multiply connected nonchronal region with closed timelike curves and that the most natural vacuum allows quantum fluctuations which do not induce any divergent behaviour of the re-normalized stress-energy tensor, even on the event (Cauchy) chronology horizon. In such a case, the horizon encloses closed timelike curves only at scales close to the Planck length, so that the warp drive satisfies the Ford's negative energy-time inequality. Also found is a connection between the superluminal two-dimensional warp drive space and two-dimensional gravitational kinks. This connection allows us to generalize the considered Alcubierre metric to a standard, nonstatic metric which is only describable on two different coordinate patches
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.
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
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 ...
Duality in spaces of finite linear combinations of atoms
Ricci, Fulvio
Duality in spaces of finite linear combinations of atoms Fulvio Ricci and Joan Verdera Abstract In this note we describe the dual and the completion of the space of finite linear combinations of (p, )-atoms, )-atoms, 0
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.
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 ...
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 ...
An analysis of the formal qualities of space in architecture
Lie, Kai Ie
1985-01-01T23:59:59.000Z
This thesis will provide an analysis of formal qualities of space from three perspectives; from the interior, from the boundary, and from the exterior of a space. The outline of this thesis will consist of an introduction, ...
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
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 ...
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 ...
The History of Nuclear Power in Space | Department of Energy
Broader source: Energy.gov (indexed) [DOE]
space travel may be impractical or impossible. Plutonium-238 works well as a space power source for several reasons. It has a half-life of 88 years, meaning it takes that long...
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 ...
Overview of MEXT's Space Activities Ministry of Education, Culture, Sports,
for would-be satellite engineers in order to learn satellite development process Overview of Space measures. (3) Resource Exploration Realizing space-based wide and simultaneous exploration using remote
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,
National Aeronautics and Space Administration PRESS KIT/OCTOBER 2010
......................................................................................... 27 AUTOMATED TRANSFER VEHICLE-2 ....................................................................................... 29 H-II TRANSFER VEHICLE OVERVIEW in a training session in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center in Houston. #12
Space-like Dp branes: accelerating cosmologies versus conformally de Sitter space-time
Kuntal Nayek; Shibaji Roy
2014-11-10T23:59:59.000Z
We consider the space-like D$p$ brane solutions of type II string theories having isometries ISO$(p+1)$ $\\times$ SO$(8-p,1)$. These are asymptotically flat solutions or in other words, the metrics become flat at the time scale $\\tau \\gg \\tau_0$. On the other hand, when $\\tau \\sim \\tau_0$, we get $(p+1)+1$ dimensional flat FLRWmetrics upon compactification on a $(8-p)$ dimensional hyperbolic space with time dependent radii. We show that the resultant $(p+1)+1$ dimensional metrics describe transient accelerating cosmologies for all $p$ from 1 to 6, i.e., from $(2+1)$ to $(7+1)$ space-time dimensions. We show how the acceleration changes with the interplay of the various parameters characterizing the solutions in $(3+1)$ dimensions. Finally, for $\\tau \\ll \\tau_0$, after compactification on $(8-p)$ dimensional hyperbolic space, the resultant metrics are shown to take the form of $(p+1)+1$ dimensional de Sitter spaces upto a conformal transformation. Cosmologies here are decelerating, but, only in a particular conformal frame we get eternal acceleration.
National Aeronautics and Space Administration www.nasa.gov
Christian, Eric
but will be published as space allows. All submissions are subject to editing. Algae Bloom on Lake Erie Algae blooms
Asymptotic approximation of harmonic maps to Teichmuller space
Mese, Chikako
], [DMW] to study rigidity properties of TeichmÂ¨uller space. 1 Introduction Consider the smooth Riemannian
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.
Photon tunneling in the warp drive space-time
Cramer, C R
1995-01-01T23:59:59.000Z
We simplify the warp drive space-time such that it becomes stationary and the distorsion becomes one-dimensional and static. We use this simplified space-time as the classical background space-time for a photon field. The Drummond&Hathrell action is then used in order to investigate the velocity effects on photons tunneling through the space-time distorsion. We speculate on whether or not all tunneling processes with photons induce faster than light effects.
Stochastic control problems and spherical functions on symmetric spaces
Duncan, Tyrone E.; Upmeier, H.
1995-01-01T23:59:59.000Z
situations (e.g. matrix groups and hyperbolic spaces). By using the additional structure available on symmetric spaces we are able to construct large families of explicitly solvable stochastic control problems in symmetric spaces of arbitrary rank. Received... by the editors October 26, 1992. 1991 Mathematics Subject Classification. Primary 93E20, 43A90; Secondary 58G32, 33C55, 53C35. Key words and phrases. Stochastic control, spherical functions, controlled diffusions in symmet- ric spaces, Laplace-Beltrami operator...
Fixed Space of Positive Trace-Preserving Super-Operators
Ansis Rosmanis
2011-09-15T23:59:59.000Z
We examine the fixed space of positive trace-preserving super-operators. We describe a specific structure that this space must have and what the projection onto it must look like. We show how these results, in turn, lead to an alternative proof of the complete characterization of the fixed space of completely positive trace-preserving super-operators.
National Aeronautics and Space Administration Summary of the Science Plan
conducts scientific exploration that is enabled by access to space. We project humankind's vantage point into space with observatories in Earth orbit and deep space, spacecraft visiting the Moon and other planetary to the Moon, Mars and beyond. #12;Our solar system is governed by the Sun, a main-sequence star midway through
ASU School of Earth and Space Exploration September 10, 2014
Rhoads, James
ASU School of Earth and Space Exploration September 10, 2014 Imaging the Birthplaces of Stars and Planets with Terahertz Focal Plane Arrays Christopher Groppi Assistant Professor ASU School of Earth and Space Exploration #12;ASU School of Earth and Space Exploration September 10, 2014 SESE Terahertz Group
A CHARACTERIZATION OF HOMOGENEOUS SPACES WITH POSITIVE HYPERBOLIC RANK
Connell, Christopher
A CHARACTERIZATION OF HOMOGENEOUS SPACES WITH POSITIVE HYPERBOLIC RANK CHRISTOPHER CONNELL Abstract to be a rank one symmetric space. In particular, we show rigidity if such a space has positive hyperbolic rank greater than equal to that of its "abelian direction." The notion of hyperbolic-rank extends the notion
Scott Domain Representability of a Class of Generalized Ordered Spaces
Lutzer, David J.
-space constructed on a locally compact LOTS, is Scott-domain representable, i.e., is homeomorphic to the space-domain representable (i.e., being homeomorphic to the subspace of maximal elements of a Scott-domain with the ScottScott Domain Representability of a Class of Generalized Ordered Spaces Kevin W. Duke and David
Geodesic Shape Spaces of Surfaces of Xiuwen Liu1
Paris-Sud XI, UniversitĂ© de
Geodesic Shape Spaces of Surfaces of Genus Zero Xiuwen Liu1 , Washington Mio2 , Yonggang Shi3 surfaces im- mersed in Euclidean space Rk . The spaces are equipped with geodesic metrics that depend on the tension and rigidity of the surfaces. We de- velop algorithms to calculate geodesics and geodesic
A nuclear Frechet space consisting of C -functions and
Vogt, Dietmar
A nuclear FrÂ´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 FreÂ´echet space failing of Grothendieck whether every nuclear FrÂ´echet space has the bounded approximation property was open for quite
Transactions of the fourth symposium on space nuclear power systems
El-Genk, M.S.; Hoover, M.D. (eds.)
1987-01-01T23:59:59.000Z
This paper contains the presented papers at the fourth symposium on space nuclear power systems. Topics of these papers include: space nuclear missions and applications, reactors and shielding, nuclear electric and nuclear propulsion, refractory alloys and high-temperature materials, instrumentation and control, energy conversion and storage, space nuclear fuels, thermal management, nuclear safety, simulation and modeling, and multimegawatt system concepts. (LSP)
Free Space Computation Using Stochastic Occupancy Grids and Dynamic Programming
Mester, Rudolf
1 Free Space Computation Using Stochastic Occupancy Grids and Dynamic Programming HernÂ´an Badino1Chrysler AG, Stuttgart Abstract. The computation of free space available in an environment is an essential, which builds a stochastic occupancy grid to address the free space problem as a dynamic pro- gramming
Transactions of the fifth symposium on space nuclear power systems
El-Genk, M.S.; Hoover, M.D. (eds.)
1988-01-01T23:59:59.000Z
This paper contains the presented papers at the fourth symposium on space nuclear power systems. Topics of these paper include: space nuclear missions and applications, reactors and shielding, nuclear electric and nuclear propulsion, high-temperature materials, instrumentation and control, energy conversion and storage, space nuclear fuels, thermal management, nuclear safety, simulation and modeling, and multimegawatt system concepts. (LSP)
AND/OR Search Spaces for Graphical Models Rina Dechter
Dechter, Rina
and may sometime reduce the search space exponentially. Indeed, most algorithmic advances in search- based it is hidden in the linear structure of the search space. Advanced search algorithms developed for constraint use. The AND/OR search spaces view, provides a coherent ac- count of various advanced search methods
Space Decompositions: Theory and Practice Paulo Cezar Pinto Carvalho 1
Space Decompositions: Theory and Practice Paulo Cezar Pinto Carvalho 1 Jonas de Miranda Gomes 1 The use of space decompositions in Mathematics ranges from Algebraic Topology to Numerical Analysis. The existence of certain subdivisions of a space allows us to obtain valuable information about the geometry
Space Planning & Operations University of Pennsylvania School of Medicine
Bushman, Frederic
Space Planning & Operations University of Pennsylvania School of Medicine Policy & Procedure Building II/III fourteenth floor Faculty Lounge, and the criteria for reserving the Lounge Space use of the Faculty Lounge as well as scheduled use of the Lounge Space and Conference Rooms. Scope
On Space-Time Singularities, Holes, and Extensions
Manchak, John
On Space-Time Singularities, Holes, and Extensions John Byron Manchak*y Here, we clarify the relationship among three space-time conditions of interest: geodesic completeness, hole. In what follows, we consider three space-time conditions of interest: geodesic completeness, hole
Space and Movable Equipment On-line Inventory
Hayden, Nancy J.
Space and Movable Equipment On-line Inventory FY14 (July 2013 - June 2014) CAS Cost Accounting and Michael Richards #12;Learning Objectives · Gain understanding of the Importance of Space & Equipment Inventory. · Understand the entire Inventory Process. · How to classify functional space. · How to inventory
Some Properties of Realcompact Subspaces and Coarser Normal Spaces
Niknejad, Jila
2009-04-23T23:59:59.000Z
William Fleissner. In 1997 Buzjakova proved that for a pseudocompact space X, there exists an ordinal such that the product of X and that ordinal condenses onto a normal space if and only if X condenses onto a compact space. In the third chapter, we extend...
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
PRODUCT SYSTEMS OF HILBERT SPACES B V RAJARAMA BHAT
SchĂĽrmann, Michael
PRODUCT SYSTEMS OF HILBERT SPACES B V RAJARAMA BHAT Indian Statistical Institute, Bangalore. We wish to cover the basics of the theory of tensor product systems of Hilbert spaces. Concrete tensor product systems of Hilbert spaces have appeared in various fields of Mathematics and Mathematical Physics
Linear harmonic oscillator in spaces with degenerate metrics
N. A. Gromov
2006-03-02T23:59:59.000Z
With the help of contraction method we study the harmonic oscillator in spaces with degenerate metrics, namely, on Galilei plane and in the flat 3D Cayley-Klein spaces $R_3(j_2,j_3).$ It is shown that the inner degrees of freedom are appeared which physical dimensions are different from the dimension of the space.
December 2014 Vol. 1 No. 9 Kennedy Space Center's
Waliser, Duane E.
December 2014 Vol. 1 No. 9 Kennedy Space Center's National Aeronautics and Space Administration Moisture Active Passive (SMAP) Description: SMAP is an Earth satellite mission designed to measure and map.I'm responsible for all of the security officers' firearms training at the Kennedy Space Center, as well
National Aeronautics and Space Administration Volume 5 Issue 4
Christian, Eric
Issue 4 June 2009 02 GoddardUpdate Goddard Enters Space Act Agreement for Education Center By John step." n Table of Contents Goddard Updates Goddard Enters Space Act Agreement for Education Center Â 2 organization Maryland Science, Exploration, and Education Center (SEEC) at Goddard, signed a NASA Space Act
Goals of the ARISE Space VLBI Mission
James S. Ulvestad
1999-01-26T23:59:59.000Z
Supermassive black holes, with masses of 10^6 to more than 10^9 solar masses, are among the most spectacular objects in the Universe, and are laboratories for physics in extreme conditions. The primary goal of ARISE (Advanced Radio Interferometry between Space and Earth) is to use the technique of Space VLBI to increase our understanding of black holes and their environments, by imaging the havoc produced in the near vicinity of the black holes by their enormous gravitational fields. The mission will be based on a 25-meter space-borne radio telescope operating at frequencies between 8 and 86 GHz, roughly equivalent to an orbiting element of the Very Long Baseline Array. In an elliptical orbit with an apogee height of 40,000-100,000 km, ARISE will provide resolution of 15 microarcseconds or better, 5-10 times better than that achievable on the ground. At frequencies of 43 and 86 GHz, the resolution of light weeks to light months in distant quasars will complement the gamma-ray and X-ray observations of high-energy photons, which come from the same regions near the massive black holes. At 22 GHz, ARISE will image the water maser disks in active galaxies more than 15 Mpc from Earth, probing accretion physics and giving accurate measurements of black-hole masses. ARISE also will study gravitational lenses at resolutions of tens of microarcseconds, yielding important information on the dark-matter distribution and on the possible existence of compact objects with masses of 10^3 to 10^6 solar masses.
Donation of municipal open space in Texas
Buzzingham, Donald
1978-01-01T23:59:59.000Z
Donors - City Size . 39 47 51 Figure 4 ? Open Space Donations Restrictions - City Size CHAPTER I INTRODUCTION Statement of the Problem As reported by the 1970 Census of Populati on, 73. 5 percent of all Americans now live in urban areas occupying... by the Playground and Recreation Association (1929) surveyed 956 municipalities which reported 3, 158 do- nated parks and playgrounds constituting 69, 716. 71 acres. When this donated acreage is compared with total park acre- age of 248, 627. 2 acres as reported...
The two cutoff phase space slicing method
B. W. Harris; J. F. Owens
2001-02-10T23:59:59.000Z
The phase space slicing method of two cutoffs for next-to-leading-order Monte-Carlo style QCD corrections has been applied to many physics processes. The method is intuitive, simple to implement, and relies on a minimum of process dependent information. Although results for specific applications exist in the literature, there is not a full and detailed description of the method. Herein such a description is provided, along with illustrative examples; details, which have not previously been published, are included so that the method may be applied to additional hard scattering processes.
Radiation Beyond Four Space-Time Dimensions
A. Mironov; A. Morozov
2007-03-09T23:59:59.000Z
We present a list of formulas describing classical radiation of the rank s tensor field from an accelerated point-like source in flat space-time of arbitrary even dimension d. This allows straightforward evaluating the total intensity and radiated momentum for any $s$ and $d$ algorithmically, by hands or with the help of a computer (e.g. with an attached MAPLE program). Practical application of formulas is limited, because, for s>1, the energy-momentum tensor for the point-like source is not conserved. This usually means that one cannot neglect contributions to radiation from tensions of the forces that cause acceleration of the source.
The Red Queen visits Minkowski Space
Robert J Low
2006-10-23T23:59:59.000Z
When Alice went `Through the Looking Glass' [1], she found herself in a situation where she had to run as fast as she could in order to stay still. In accordance with the dictum that truth is stranger than fiction, we will see that it is possible to find a situation in special relativity where running towards one's target is actually counter-productive. Although the situation is easily analysed algebraically, the qualitative properties of the analysis are greatly illuminated by the use of space-time diagrams.
Space nuclear power, propulsion, and related technologies.
Berman, Marshall
1992-01-01T23:59:59.000Z
Sandia National Laboratories (Sandia) is one of the nation's largest research and development (R&D) facilities, with headquarters at Albuquerque, New Mexico; a laboratory at Livermore, California; and a test range near Tonopah, Nevada. Smaller testing facilities are also operated at other locations. Established in 1945, Sandia was operated by the University of California until 1949, when, at the request of President Truman, Sandia Corporation was formed as a subsidiary of Bell Lab's Western Electric Company to operate Sandia as a service to the U.S. Government without profit or fee. Sandia is currently operated for the U.S. Department of Energy (DOE) by AT&T Technologies, Inc., a wholly-owned subsidiary of AT&T. Sandia's responsibility is national security programs in defense and energy with primary emphasis on nuclear weapon research and development (R&D). However, Sandia also supports a wide variety of projects ranging from basic materials research to the design of specialized parachutes. Assets, owned by DOE and valued at more than $1.2 billion, include about 600 major buildings containing about 372,000 square meters (m2) (4 million square feet [ft2]) of floor space, located on land totalling approximately 1460 square kilometers (km2) (562 square miles [mi]). Sandia employs about 8500 people, the majority in Albuquerque, with about 1000 in Livermore. Approximately 60% of Sandia's employees are in technical and scientific positions, and the remainder are in crafts, skilled labor, and administrative positions. As a multiprogram national laboratory, Sandia has much to offer both industrial and government customers in pursuing space nuclear technologies. The purpose of this brochure is to provide the reader with a brief summary of Sandia's technical capabilities, test facilities, and example programs that relate to military and civilian objectives in space. Sandia is interested in forming partnerships with industry and government organizations, and has already formed several cooperative alliances and agreements. Because of the synergism of multiple governmental and industrial sponsors of many programs, Sandia is frequently able to provide complex technical solutions in a relatively short time, and often at lower cost to a particular customer. They have listed a few ongoing programs at Sandia related to space nuclear technology as examples of the possible synergisms that could result from forming teams and partnerships with related technologies and objectives.
Electromagnetic Waves in the De Sitter Space
V. S. Otchik; V. M. Red'kov
2010-01-24T23:59:59.000Z
5-Dimensional wave equation for a massive particle of spin 1 in the background of de Sitter space-time model is solved in static coordinates. The spherical 5-dimensional vectors $A_{a}, a= 1,...,5$ of three types, $j,j+1, j-1$ are constructed. In massless case they give electromagnetic wave solutions, obeying the Lorentz condition. 5-form of equations in massless case is used to produce recipe to build electromagnetic wave solutions of the types $\\Pi, E,M$; the first is trivial and can be removed by a gauge ransformation. The recipe is specified to produce spherical $\\Pi, E, M$ solutions in static coordinates.
Otvoren implementcia architektry Agent-Space
Lucny, Andrej
prejavy sĂş danĂ© aktivovanĂm sprĂˇvnej sady agentov v sprĂˇvnom case image ball left/right Turn left direction ball interpolated ball recognizer interpolator left/right left/right #12;8 agent agent space blok zĂˇbran pridĂˇva a odobera agentov, i takĂ˝ch ktorĂ ovlĂˇdajĂş tie istĂ© aktuĂˇtory robota. bumper right wheel
Sustainable Spaces Inc | Open Energy Information
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revisionEnvReviewNonInvasiveExplorationUT-g GrantAtlas (PACAOpenSummersideJump to: navigation, Place:Spaces Inc
European Space Agency | Open Energy Information
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision has beenFfe2fb55-352f-473b-a2dd-50ae8b27f0a6 NoSan Leandro,Law and PolicyEssexEuropeanSpace Agency Jump
Dutch Space BV | Open Energy Information
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartmentAUDIT REPORT Americium/CuriumSunwaysDatang ChifengDhahran,DongguanDreen ReSpace BV
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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBiSite CulturalDepartment2)isomeraseUSCharge CompensationSpace Dust4
A charm that has been in space
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDeliveredÂ‰PNGExperience hands-onASTROPHYSICSHeResearchcharm that has been in space
Hayden, Nancy J.
Space and Movable Equipment Inventory Revision: July 31, 2014 CERTIFICATION OF SPACE AND MOVABLE EQUIPMENT INVENTORY - FISCAL YEAR 2014 TO BE USED FOR IBB PLANNING FOR FISCAL YEAR 2016 I acknowledge that the space and movable equipment inventory results conducted for this fiscal year will be used for IBB
The ionizing radiation environment in space and its effects
Adams, Jim; Falconer, David; Fry, Dan [Center for Space Plasma and Aeronomic Research (CSPAR), UA Huntsville (United States); Space Radiation Analysis Group, NASA Johnson Space Center (United States)
2012-11-20T23:59:59.000Z
The ionizing radiation environment in space poses a hazard for spacecraft and space crews. The hazardous components of this environment are reviewed and those which contribute to radiation hazards and effects identified. Avoiding the adverse effects of space radiation requires design, planning, monitoring and management. Radiation effects on spacecraft are avoided largely though spacecraft design. Managing radiation exposures of space crews involves not only protective spacecraft design and careful mission planning. Exposures must be managed in real time. The now-casting and forecasting needed to effectively manage crew exposures is presented. The techniques used and the space environment modeling needed to implement these techniques are discussed.
Equivariance on Discrete Space and Yang-Mills-Higgs Model
Ikemori, Hitoshi; Matsui, Yoshimitsu; Otsu, Hideharu; Sato, Toshiro
2015-01-01T23:59:59.000Z
We introduce the basic equivariant quantity $Q$ in the gauge theory on the noncommutative descrete $Z_{2}$ space, which plays an important role for the equivariant dimensional reduction. If the gauge configuration of the ground state on the extra dimensional space is described by the equivariant $Q$, then the extra dimensional space is invisible. Especially, using the equivariance principle, we show that the Yang-Mills theory on $R^{2}\\times Z_{2}$ space is equivalent to the Yang-Mills-Higgs model on $R^{2}$ space. It can be said that this model is the simplest model of this type.
Equivariance on Discrete Space and Yang-Mills-Higgs Model
Hitoshi Ikemori; Shinsaku Kitakado; Yoshimitsu Matsui; Hideharu Otsu; Toshiro Sato
2015-04-07T23:59:59.000Z
We introduce the basic equivariant quantity $Q$ in the gauge theory on the noncommutative descrete $Z_{2}$ space, which plays an important role for the equivariant dimensional reduction. If the gauge configuration of the ground state on the extra dimensional space is described by the equivariant $Q$, then the extra dimensional space is invisible. Especially, using the equivariance principle, we show that the Yang-Mills theory on $R^{2}\\times Z_{2}$ space is equivalent to the Yang-Mills-Higgs model on $R^{2}$ space. It can be said that this model is the simplest model of this type.
Flat space (higher spin) gravity with chemical potentials
Michael Gary; Daniel Grumiller; Max Riegler; Jan Rosseel
2014-11-24T23:59:59.000Z
We introduce flat space spin-3 gravity in the presence of chemical potentials and discuss some applications to flat space cosmology solutions, their entropy, free energy and flat space orbifold singularity resolution. Our results include flat space Einstein gravity with chemical potentials as special case. We discover novel types of phase transitions between flat space cosmologies with spin-3 hair and show that the branch that continuously connects to spin-2 gravity becomes thermodynamically unstable for sufficiently large temperature or spin-3 chemical potential.
Beyond Archimedean Space-Time Structure
Rosinger, Elemer E. [Department of Mathematics and Applied Mathematics, University of Pretoria, Pretoria, 0002 (South Africa); Khrennikov, Andrei [International Center for Mathematical Modeling, in Physics and Cognitive Sciences, Linnaeus University, S-35195, Vaexjoe (Sweden)
2011-03-28T23:59:59.000Z
It took two millennia after Euclid and until in the early 1880s, when we went beyond the ancient axiom of parallels, and inaugurated geometries of curved spaces. In less than one more century, General Relativity followed. At present, physical thinking is still beheld by the yet deeper and equally ancient Archimedean assumption. In view of that, it is argued with some rather easily accessible mathematical support that Theoretical Physics may at last venture into the non-Archimedean realms. In this introductory paper we stress two fundamental consequences of the non-Archimedean approach to Theoretical Physics: one of them for quantum theory and another for relativity theory. From the non-Archimedean viewpoint, the assumption of the existence of minimal quanta of light (of the fixed frequency) is an artifact of the present Archimedean mathematical basis of quantum mechanics. In the same way the assumption of the existence of the maximal velocity, the velocity of light, is a feature of the real space-time structure which is fundamentally Archimedean. Both these assumptions are not justified in corresponding non-Archimedean models.
MFV Reductions of MSSM Parameter Space
S. S. AbdusSalam; C. P. Burgess; F. Quevedo
2015-02-09T23:59:59.000Z
The 100+ free parameters of the minimal supersymmetric standard model (MSSM) make it computationally difficult to compare systematically with data, motivating the study of specific parameter reductions such as the cMSSM and pMSSM. Here we instead study the reductions of parameter space implied by using minimal flavour violation (MFV) to organise the R-parity conserving MSSM, with a view towards systematically building in constraints on flavour-violating physics. Within this framework the space of parameters is reduced by expanding soft supersymmetry-breaking terms in powers of the Cabibbo angle, leading to a 24-, 30- or 42-parameter framework (which we call MSSM-24, MSSM-30, and MSSM-42 respectively), depending on the order kept in the expansion. We provide a Bayesian global fit to data of the MSSM-30 parameter set to show that this is manageable with current tools. We compare the MFV reductions to the 19-parameter pMSSM choice and show that the pMSSM is not contained as a subset. The MSSM-30 analysis favours a relatively lighter TeV-scale pseudoscalar Higgs boson and $\\tan \\beta \\sim 10$ with multi-TeV sparticles.
BIODIESEL BLENDS IN SPACE HEATING EQUIPMENT.
KRISHNA,C.R.
2001-12-01T23:59:59.000Z
Biodiesel is a diesel-like fuel that is derived from processing vegetable oils from various sources, such as soy oil, rapeseed or canola oil, and also waste vegetable oils resulting from cooking use. Brookhaven National laboratory initiated an evaluation of the performance of blends of biodiesel and home heating oil in space heating applications under the sponsorship of the Department of Energy (DOE) through the National Renewable Energy Laboratory (NREL). This report is a result of this work performed in the laboratory. A number of blends of varying amounts of a biodiesel in home heating fuel were tested in both a residential heating system and a commercial size boiler. The results demonstrate that blends of biodiesel and heating oil can be used with few or no modifications to the equipment or operating practices in space heating. The results also showed that there were environmental benefits from the biodiesel addition in terms of reductions in smoke and in Nitrogen Oxides (NOx). The latter result was particularly surprising and of course welcome, in view of the previous results in diesel engines where no changes had been seen. Residential size combustion equipment is presently not subject to NOx regulation. If reductions in NOx similar to those observed here hold up in larger size (commercial and industrial) boilers, a significant increase in the use of biodiesel-like fuel blends could become possible.
Angle and Volume Studies in Quantized Space
M. Seifert
2001-08-19T23:59:59.000Z
The search for a quantum theory of gravity is one of the major challenges facing theoretical physics today. While no complete theory exists, a promising avenue of research is the loop quantum gravity approach. In this approach, quantum states are represented by spin networks, essentially graphs with weighted edges. Since general relativity predicts the structure of space, any quantum theory of gravity must do so as well; thus, "spatial observables" such as area, volume, and angle are given by the eigenvalues of Hermitian operators on the spin network states. We present results obtained in our investigations of the angle and volume operators, two operators which act on the vertices of spin networks. We find that the minimum observable angle is inversely proportional to the square root of the total spin of the vertex, a fairly slow decrease to zero. We also present numerical results indicating that the angle operator can reproduce the classical angle distribution. The volume operator is significantly harder to investigate analytically; however, we present analytical and numerical results indicating that the volume of a region scales as the 3/2 power of its bounding surface, which corresponds to the classical model of space.
Hydrogen atom in de Sitter spaces
O. V. Veko; K. V. Kazmerchuk; E. M. Ovsiyuk; V. M. Red'kov; A. M. Ishkhanyan
2014-12-28T23:59:59.000Z
The hydrogen atom theory is developed for the de Sitter and anti de Sitter spaces on the basis of the Klein-Gordon-Fock wave equation in static coordinates. In both models, after separation of the variables, the problem is reduced to the general Heun equation, a second order linear differential equation having four regular singular points. A qualitative examination shows that the energy spectrum for the hydrogen atom in the de Sitter space should be quasi-stationary, and the atom should be unstable. We derive an approximate expression for energy levels within the quasi-classical approach and estimate the probability of decay of the atom. A similar analysis shows that in the anti de Sitter model the hydrogen atom should be stable in the quantum-mechanical sense. Using the quasi-classical approach, we derive approximate formulas for energy levels for this case as well. Finally, we present the extension to the case of a spin 1/2 particle for both de Sitter models. This extension leads to complicated differential equations with 8 singular points.
Some intriguing properties of Tukey's half-space depth
Dutta, Subhajit; Chaudhuri, Probal; 10.3150/10-BEJ322
2012-01-01T23:59:59.000Z
For multivariate data, Tukey's half-space depth is one of the most popular depth functions available in the literature. It is conceptually simple and satisfies several desirable properties of depth functions. The Tukey median, the multivariate median associated with the half-space depth, is also a well-known measure of center for multivariate data with several interesting properties. In this article, we derive and investigate some interesting properties of half-space depth and its associated multivariate median. These properties, some of which are counterintuitive, have important statistical consequences in multivariate analysis. We also investigate a natural extension of Tukey's half-space depth and the related median for probability distributions on any Banach space (which may be finite- or infinite-dimensional) and prove some results that demonstrate anomalous behavior of half-space depth in infinite-dimensional spaces.
Reynolds, E.; Schaefer, E. [Johns Hopkins Univ., Laurel, MD (United States). Applied Physics Lab.; Polansky, G.; Lacy, J. [Phillips Lab., Albuquerque, NM (United States); Bocharov, A. [GDBMB, St. Petersburg (Russian Federation)
1993-09-30T23:59:59.000Z
The Nuclear Electric Propulsion Space Test Program (NEPSTP) has developed a cooperative relationship with several institutes of the former Soviet Union to evaluate Russian space hardware on a US spacecraft One component is the Topaz II Nuclear Power System; a built and flight qualified nuclear reactor that has yet to be tested in space. The access to the Topaz II reactor provides the NEPSTP with a rare opportunity; to conduct an early flight demonstration of nuclear electric propulsion at a relatively low cost. This opportunity, however, is not without challenges. Topaz II was designed to be compatible with Russian spacecraft and launch vehicles. It was manufactured and flight qualified by Russian techniques and standards and conforms to safety requirements of the former Soviet Union, not the United States. As it is desired to make minimal modifications to the Topaz II, integrating the reactor system with a United States spacecraft and launch vehicle presents an engineering challenge. This paper documents the lessons teamed regarding the integration of reactor based spacecraft and also some insight about integrating Russian hardware. It examines the planned integration flow along with specific reactor requirements that affect the spacecraft integration including American-Russian space system compatibility.
Chittka, Lars
. It should be noted that it is the responsibility of local managers for the welfare of their staff action to be taken. Space Temperatures Limits The Health & Safety Executive (HSE) has stated by air temperature alone. The HSE considers 80% of occupants as a reasonable limit for the minimum number
Title of Document: STUDY OF LONGITUDINAL SPACE CHARGE WAVES IN SPACE-CHARGE DOMINATED BEAMS
Anlage, Steven
BEAMS Jayakar Charles Tobin Thangaraj, Doctor of Philosophy, 2009 Directed By: Prof. Patrick O'Shea Prof current electron beam with very low emittance and energy spread. Any density fluctuation in an intense beam can launch space charge waves that lead to energy modulation. The energy modulations may cause
E-Print Network 3.0 - area space telescope Sample Search Results
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
in space than ground? It's difficult to build telescopes in space. 12;Telescope Optics: Seeing... ", there is no seeing at the space, seeing is also wavelength dependent...
None
2011-04-25T23:59:59.000Z
The talk will explore a little of the history of space launch systems and rocketry, will explain why commercial space tourism did not take off after Apollo, and what is happening right now with commercial space systems such as Virgin's, utilising advances in aerospace technology not exploited by conventional ground-based rocket systems. I will then explain the Virgin Galactic technology, its business plan as a US-regulated space tourism company, and the nature of its applications. I will then go on to say a little of how our system can be utilised for sub-orbital space science based on a commercial business plan
Performance tuned radioisotope thermophotovoltaic space power system
Horne, W.E.; Morgan, M.D.; Saban, S.B. [EDTEK, Inc., 7082 South 220th Street, Kent, Washington 98032-1910 (United States)
1998-01-01T23:59:59.000Z
The trend in space exploration is to use many small, low-cost, special-purpose satellites instead of the large, high-cost, multipurpose satellites used in the past. As a result of this new trend, there is a need for lightweight, efficient, and compact radioisotope fueled electrical power generators. This paper presents an improved design for a radioisotope thermophotovoltaic (RTPV) space power system in the 10 W to 20 W class which promises up to 37.6 watts at 30.1{percent} efficiency and 25 W/kg specific power. The RTPV power system concept has been studied and compared to radioisotope thermoelectric generators (RTG) radioisotope, Stirling generators and alkali metal thermal electric conversion (AMTEC) generators (Schock, 1995). The studies indicate that RTPV has the potential to be the lightest weight, most efficient and most reliable of the three concepts. However, in spite of the efficiency and light weight, the size of the thermal radiator required to eliminate excess heat from the PV cells and the lack of actual system operational performance data are perceived as obstacles to RTPV acceptance for space applications. Between 1994 and 1997 EDTEK optimized the key converter components for an RTPV generator under Department of Energy (DOE) funding administered via subcontracts to Orbital Sciences Corporation (OSC) and EG&G Mound Applied Technologies Laboratory (Horne, 1995). The optimized components included a resonant micromesh infrared bandpass filter, low-bandgap GaSb PV cells and cell arrays. Parametric data from these components were supplied to OSC who developed and analyzed the performance of 100 W, 20 W, and 10 W RTPV generators. These designs are described in references (Schock 1994, 1995 and 1996). Since the performance of each class of supply was roughly equivalent and simply scaled with size, this paper will consider the OSC 20 W design as a baseline. The baseline 20-W RTPV design was developed by Schock, et al of OSC and has been presented elsewhere. The baseline design, centered around components and measured parametric data developed by EDTEK, Inc., promised an overall thermal-to-electric system output of 23 W at a conversion efficiency of 19{percent}, 1.92 kg system weight, and a specific power of 13.3 W/kg. The improved design reported herein promises up to 37.6 W at 30.1{percent} efficiency, 1.5 kg system weight, up to 25 W/kg specific power, a six-fold reduction in thermal radiator size over the baseline design, as well as a lower isotope temperature for greater safety. The six-fold reduction in thermal radiator size removes one of the greatest obstacles to applying RTPV in space missions. {copyright} {ital 1998 American Institute of Physics.}