WorldWideScience

Sample records for survey proposed expansion

  1. Supplemental Environmental Baseline Survey for Proposed Land Use Permit Modification for Expansion of the Dynamic Explosive Test Site (DETS) 9940 Main Complex Parking Lot

    Energy Technology Data Exchange (ETDEWEB)

    Peek, Dennis W. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2016-10-01

    The “subject property” is comprised of a parcel of land within the Kirtland Military Reservation, Bernalillo County, New Mexico, as shown on the map in Appendix B of this document. The land requirement for the parking lot addition to the 9940 Main Complex is approximately 2.7 acres. The scope of this Supplemental Environmental Baseline Survey (SEBS) is for the parking lot addition land transfer only. For details on the original 9940 Main Complex see Environmental Baseline Survey, Land Use Permit Request for the 9940 Complex PERM/0-KI-00-0001, August 21, 2003, and for details on the 9940 Complex Expansion see Environmental Baseline Survey, Proposed Land Use Permit Expansion for 9940 DETS Complex, June 24, 2009. The 2.7-acre parcel of land for the new parking lot, which is the subject of this EBS (also referred to as the “subject property”), is adjacent to the southwest boundary of the original 12.3- acre 9940 Main Complex. No testing is known to have taken place on the subject property site. The only activity known to have taken place was the burial of overhead utility lines in 2014. Adjacent to the subject property, the 9940 Main Complex was originally a 12.3-acre site used by the Department of Energy (DOE) under a land use permit from the United States Air Force (USAF). Historical use of the site, dating from 1964, included arming, fusing, and firing of explosives and testing of explosives systems components. In the late 1970s and early 1980s experiments at the 9940 Main Complex shifted toward reactor safety issues. From 1983 to 1988, fuel coolant interaction (FCI) experiments were conducted, as were experiments with conventional high explosives (HE). Today, the land is used for training of the Nuclear Emergency Response community and for research on energetic materials. In 2009, the original complex was expanded to include four additional 20-acre areas: 9940 Training South, 9940 Training East, T-Range 6, and Training West Landing Zone. The proposed use of

  2. Market Survey for Business Expansion

    OpenAIRE

    Kocsis, Mate

    2016-01-01

    In order to find new customers abroad the company should analyze the market situation precisely in the desired market. This is necessary with a well-made market research, based on several survey methods. The answers collected by the survey should be analyzed and taken into consideration about the product and about the way of entry.

  3. INVESTIGATION OF HOLOCENE FAULTING PROPOSED C-746-U LANDFILL EXPANSION

    Energy Technology Data Exchange (ETDEWEB)

    Lettis, William [William Lettis & Associates, Inc.

    2006-07-01

    This report presents the findings of a fault hazard investigation for the C-746-U landfill's proposed expansion located at the Department of Energy's (DOE) Paducah Gaseous Diffusion Plant (PGDP), in Paducah, Kentucky. The planned expansion is located directly north of the present-day C-746-U landfill. Previous geophysical studies within the PGDP site vicinity interpret possible northeast-striking faults beneath the proposed landfill expansion, although prior to this investigation the existence, locations, and ages of these inferred faults have not been confirmed through independent subsurface exploration. The purpose of this investigation is to assess whether or not Holocene-active fault displacement is present beneath the footprint of the proposed landfill expansion.

  4. Proposal for a material with negative thermal expansion

    Science.gov (United States)

    Abdullah, Mikrajuddin

    2016-09-01

    I propose a model of a material that exhibits negative thermal expansion (NTE) properties and criteria for the occurrence of linear and volumetric NTE. I derived the criteria for an arbitrary force between rigid units in the material. These criteria are also discussed specifically for the Lennard-Jones (6-12) potential and in more detail for metal-organic framework (MOF) materials comprising rigid units connected by organic linkers. Qualitatively, the model predictions can explain some observed results. Surprisingly, the model can produce equations for the transition temperature from NTE to positive thermal expansion (PTE), Tc ≈ T0 - 50 K, which is exactly the same as the temperature at which the glass transition begins to occur in most polymers, i.e., Tc ≈ Tg - 50 K.

  5. Survey of health planning proposals.

    Science.gov (United States)

    Krakauer, R S

    1994-02-01

    It is important that physicians participate in the debate and planning process that will ultimately guide how we reform the way health care is financed and delivered in the United States. Herein is offered a perspective on the problem, one which is not necessarily appreciated by health planners. While we deliver the best quality of care in the world to most of our population, our system has been severely criticized because we fail to provide for access to a substantial minority of our population. Additionally, the cost of the product is considerably greater than that in comparable countries. Attempts to control costs without diminishing quality have introduced expensive complexities into our system without any real success in cutting costs. Several proposals have been advanced to address the issues of cost and access. One of these is a single payer system, common in Europe and Canada, whereby a single agent or group of agents finances all health care through universal rules and means. A system operating in Hawaii is a simple employer mandate to provide health insurance. A uniquely American plan is the Jackson Hole Plan or Managed Competition (now called "Managed Cooperation"). This system is currently popular among national health planners, and involves a defined minimum managed health plan offered by various groups of providers to employees and individuals through health plan purchasing cooperatives. This plan is interesting, but has not been implemented in any jurisdiction, and it is not certain it would accomplish its goals in practice since it is difficult to predict behavior of all parties to such a system.

  6. 77 FR 48169 - The Information Technology Agreement: Advice and Information on the Proposed Expansion: Part 1...

    Science.gov (United States)

    2012-08-13

    ... COMMISSION The Information Technology Agreement: Advice and Information on the Proposed Expansion: Part 1; The Information Technology Agreement: Advice and Information on the Proposed Expansion: Part 2 AGENCY... Information Technology Agreement: Advice and Information on the Proposed Expansion: Part 1, and...

  7. 78 FR 69703 - 10-Day Notice of Proposed Information Collection: Generic Customer Satisfaction Surveys; Physical...

    Science.gov (United States)

    2013-11-20

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF HOUSING AND URBAN DEVELOPMENT 10-Day Notice of Proposed Information Collection: Generic Customer Satisfaction... Customer Satisfaction Surveys Physical Inspection Alignment Pilot Program--Expansion Announcement....

  8. National Training Center Fort Irwin expansion area aquatic resources survey

    Energy Technology Data Exchange (ETDEWEB)

    Cushing, C.E.; Mueller, R.P.

    1996-02-01

    Biologists from Pacific Northwest National Laboratory (PNNL) were requested by personnel from Fort Irwin to conduct a biological reconnaissance of the Avawatz Mountains northeast of Fort Irwin, an area for proposed expansion of the Fort. Surveys of vegetation, small mammals, birds, reptiles, amphibians, and aquatic resources were conducted during 1995 to characterize the populations and habitats present with emphasis on determining the presence of any species of special concern. This report presents a description of the sites sampled, a list of the organisms found and identified, and a discussion of relative abundance. Taxonomic identifications were done to the lowest level possible commensurate with determining the status of the taxa relative to its possible listing as a threatened, endangered, or candidate species. Consultation with taxonomic experts was undertaken for the Coleoptera ahd Hemiptera. In addition to listing the macroinvertebrates found, the authors also present a discussion related to the possible presence of any threatened or endangered species or species of concern found in Sheep Creek Springs, Tin Cabin Springs, and the Amargosa River.

  9. Proposed of Urban Expansion to Santa Lucia-SP Municipality

    Directory of Open Access Journals (Sweden)

    Daniel José Campesan

    2017-09-01

    Full Text Available The Improper planning of urban expansion has caused environmental and social imbalances. Therefore, there is a need for strategies that can guide the sustainable development of cities. This study aimed to develop a map of suitable areas for urban expansion to the municipality of Santa Lucia - SP. For the preparation of the database, georeferenced municipality in ArcGIS software, was adopted the geographic projection system Universal Transverse Mercator, Zone 23 South, datum SIRGAS 2000. It was hold the multi-criteria analysis of slope information, distance to water bodies, per capita income, population density, growth side, distance from urban area and use and land cover for the generation of the expansive capability map. Based on these results, it was possible to consider that the expansion of the urban area should follow the west side following the counterpoint of the current.

  10. Grasslands Wildlife Management Area proposed expansion: Environmental Assessment, Land Protection Plan, and Conceptual Management Plan

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This document discusses the proposed expansion of the Service's easement program for protection of the wildlife habitat of Merced County's Grasslands Ecological...

  11. A Proposed Stochastic Finite Difference Approach Based on Homogenous Chaos Expansion

    Directory of Open Access Journals (Sweden)

    O. H. Galal

    2013-01-01

    Full Text Available This paper proposes a stochastic finite difference approach, based on homogenous chaos expansion (SFDHC. The said approach can handle time dependent nonlinear as well as linear systems with deterministic or stochastic initial and boundary conditions. In this approach, included stochastic parameters are modeled as second-order stochastic processes and are expanded using Karhunen-Loève expansion, while the response function is approximated using homogenous chaos expansion. Galerkin projection is used in converting the original stochastic partial differential equation (PDE into a set of coupled deterministic partial differential equations and then solved using finite difference method. Two well-known equations were used for efficiency validation of the method proposed. First one being the linear diffusion equation with stochastic parameter and the second is the nonlinear Burger's equation with stochastic parameter and stochastic initial and boundary conditions. In both of these examples, the probability distribution function of the response manifested close conformity to the results obtained from Monte Carlo simulation with optimized computational cost.

  12. Proposal: Herpetofaunal survey of the Santee National Wildlife Refuge

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This is a proposal to conduct a comprehensive herpetofaunal survey were conducted on Santee NWR in 2011 and 2012 using a combinations of cover boards, automated...

  13. Map Reduce: A Survey Paper on Recent Expansion

    Directory of Open Access Journals (Sweden)

    Shafali Agarwal

    2015-08-01

    Full Text Available A rapid growth of data in recent time, Industries and academia required an intelligent data analysis tool that would be helpful to satisfy the need to analysis a huge amount of data. MapReduce framework is basically designed to compute data intensive applications to support effective decision making. Since its introduction, remarkable research efforts have been put to make it more familiar to the users subsequently utilized to support the execution of massive data intensive applications. Our survey paper emphasizes the state of the art in improving the performance of various applications using recent MapReduce models and how it is useful to process large scale dataset. A comparative study of given models corresponds to Apache Hadoop and Phoenix will be discussed primarily based on execution time and fault tolerance. At the end, a high-level discussion will be done about the enhancement of the MapReduce computation in specific problem area such as Iterative computation, continuous query processing, hybrid database etc.

  14. The Exoplanet Microlensing Survey by the Proposed WFIRST Observatory

    Science.gov (United States)

    Barry, Richard; Kruk, Jeffrey; Anderson, Jay; Beaulieu, Jean-Philippe; Bennett, David P.; Catanzarite, Joseph; Cheng, Ed; Gaudi, Scott; Gehrels, Neil; Kane, Stephen; Lunine, Jonathan; Sumi, Takahiro; Tanner, Angelle; Traub, Wesley

    2012-01-01

    The New Worlds, New Horizons report released by the Astronomy and Astrophysics Decadal Survey Board in 2010 listed the Wide Field Infrared Survey Telescope (WFIRST) as the highest-priority large space mission for the . coming decade. This observatory will provide wide-field imaging and slitless spectroscopy at near infrared wavelengths. The scientific goals are to obtain a statistical census of exoplanets using gravitational microlensing. measure the expansion history of and the growth of structure in the Universe by multiple methods, and perform other astronomical surveys to be selected through a guest observer program. A Science Definition Team has been established to assist NASA in the development of a Design Reference Mission that accomplishes this diverse array of science programs with a single observatory. In this paper we present the current WFIRST payload concept and the expected capabilities for planet detection. The observatory. with science goals that are complimentary to the Kepler exoplanet transit mission, is designed to complete the statistical census of planetary systems in the Galaxy, from habitable Earth-mass planets to free floating planets, including analogs to all of the planets in our Solar System except Mercury. The exoplanet microlensing survey will observe for 500 days spanning 5 years. This long temporal baseline will enable the determination of the masses for most detected exoplanets down to 0.1 Earth masses.

  15. 2011 U.S. Geological Survey Topographic LiDAR: Suwannee River Expansion

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — USGS Task Order No. G10PD00236 USGS Contract No. G10PC00093 The Light Detection and Ranging (LiDAR) dataset is a survey of the Suwannee River Expansion in...

  16. Sandia National Laboratories, California proposed CREATE facility environmental baseline survey.

    Energy Technology Data Exchange (ETDEWEB)

    Catechis, Christopher Spyros

    2013-10-01

    Sandia National Laboratories, Environmental Programs completed an environmental baseline survey (EBS) of 12.6 acres located at Sandia National Laboratories/California (SNL/CA) in support of the proposed Collaboration in Research and Engineering for Advanced Technology and Education (CREATE) Facility. The survey area is comprised of several parcels of land within SNL/CA, County of Alameda, California. The survey area is located within T 3S, R 2E, Section 13. The purpose of this EBS is to document the nature, magnitude, and extent of any environmental contamination of the property; identify potential environmental contamination liabilities associated with the property; develop sufficient information to assess the health and safety risks; and ensure adequate protection for human health and the environment related to a specific property.

  17. 77 FR 52051 - Proposed Information Collection for Public Comment: Electronic Stakeholder Survey-Office for...

    Science.gov (United States)

    2012-08-28

    ... URBAN DEVELOPMENT Proposed Information Collection for Public Comment: Electronic Stakeholder Survey... Stakeholder Survey. OMB Control Number: XXXX-pending. Description of the need for the information and proposed use: The Electronic Stakeholder Survey is necessary to collect information for demonstrating...

  18. Ornithological Survey of the Proposed Geothermal Well Site No. 2

    Energy Technology Data Exchange (ETDEWEB)

    Jeffrey, Jack

    1990-08-16

    The U.S. Fish and Wildlife Service (USFWS 1983) and the State of Hawaii (DLNR 1986) have listed as endangered six forest bird species for the Island of Hawaii. Two of these birds, the O'u (Psittirostra psittacea) and the Hawaiian hawk (Buteo solitarius) may be present within the Geothermal resource sub-zone (Scott et al. 1986). Thus, their presence could impact future development within the resource area. This report presents the results of a bird survey conducted August 11 and 12, 1990 in the sub-zone in and around the proposed well site and pad for True/Mid Pacific Geothermal Well No.2.

  19. 75 FR 9279 - Proposed Information Collection (Survey of Satisfaction With the Disability Evaluation System...

    Science.gov (United States)

    2010-03-01

    ... AFFAIRS Proposed Information Collection (Survey of Satisfaction With the Disability Evaluation System (DES... announcing an opportunity for public comment on the proposed collection of certain information by the agency... Federal Register concerning each proposed collection of information, including each proposed...

  20. 78 FR 21008 - Proposed Information Collection (NCA Customer Satisfaction Surveys (Headstone/Marker) Activity...

    Science.gov (United States)

    2013-04-08

    ... AFFAIRS Proposed Information Collection (NCA Customer Satisfaction Surveys (Headstone/Marker) Activity... solicits comments on the burden estimates relating to customer satisfaction surveys involving the National... information technology. Title: Generic Clearance for NCA, and IG Customer Satisfaction Surveys. OMB...

  1. 77 FR 36568 - Proposed Information Collection; Comment Request: Generic Customer Satisfaction Surveys

    Science.gov (United States)

    2012-06-19

    ... URBAN DEVELOPMENT Proposed Information Collection; Comment Request: Generic Customer Satisfaction... information: Title of Proposal: Generic--Customer Satisfaction Surveys. OMB Control Number, if applicable... our customers. HUD will conduct various customer satisfaction surveys to gather feedback and...

  2. Current status of ATLAS and proposed expansion to an exotic beam facility

    Science.gov (United States)

    Zinkann, G. P.; Billquist, P.; Bogaty, J.; Clifft, B.; Munson, F.; Nakagawa, K.; Nolen, J.; Pardo, R.; Shepard, K. W.; Specht, J.; Sutherland, A.; Tieman, B.; Tilbrook, I.

    1996-02-01

    The Argonne Tandem Linear Accelerator System (ATLAS) has been operating on a 24 hour, seven days a week schedule since the beginning of Fiscal Year 1994. Twenty-six different ion species ran during this period in 71 separate experiments. During the past year, there have been many projects undertaken to improve operation efficiency and upgrade various accelerator systems. There is also a new ECR ion source construction project underway. This paper covers, linac operation and new tuning techniques, the second generation ECR source construction project, the refrigerator system upgrade, an upgrade to the control system. Also described is a future expansion of ATLAS as an Exotic Beam Facility. (ATLAS is a world class heavy ion accelerator with an estimated value of approximately $80 million.) A concept that would utilize ATLAS as the foundation for a facility to generate and accelerate radioactive beams is briefly discussed.

  3. Preliminary Project Investigation Proposed Expansion of St. Vincent National Wildlife Refuge

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The U. S. Fish and Wildlife Service (Service) proposes to protect and manage additional habitat at the St. Vincent National Wildlife Refuge (NWR) in the northeast...

  4. Preliminary Project Proposal for the Expansion of Hillside National Wildlife Refuge

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The Fish and Wildlife Service (Service) is proposing an approximate 700-acre addition to the existing acquisition boundary at Hillside National Wildlife Refuge...

  5. Intel Teach to the Future[R] U.S. Classic Program and U.S. Expansion Program Participant Teacher End of Training Survey. Summary Report. CCT Reports

    Science.gov (United States)

    Hupert, Naomi; Martin, Wendy; Kanaya, Tomoe

    2004-01-01

    This report compares findings from the End of Training surveys administered to Participant Teachers (PTs) who took part in the Classic version of Intel Teach to the Future and who took part in the Expansion version of Intel Teach to the Future. Classic survey data were collected between March 2001 and July 2003. PT Expansion survey data were…

  6. 75 FR 6792 - Proposed Information Collection (Insurance Survey); Comment Request

    Science.gov (United States)

    2010-02-10

    ... departments to identify and survey its customers to determine the kind and quality of services they want and their level of satisfaction with existing service. Customer satisfaction surveys are used to gauge... Insurance Service program meets customer service standards. DATES: Written comments and recommendations on...

  7. Inside the sausage factory: improving estimates of the effects of health insurance expansion proposals.

    Science.gov (United States)

    Glied, Sherry; Remler, Dahlia K; Zivin, Joshua Graff

    2002-01-01

    The fate of a proposal to expand health insurance is influenced by predictions of the proposal's effects on the number of newly insured and the cost of new coverage. Estimates vary widely, for reasons that are often hard to discern and evaluate. This article describes and compares the frameworks and parameters used for insurance modeling. It examines conventions and controversies surrounding a series of modeling parameters: how individuals respond to a change in the price of coverage, the extent of participation in a new plan by those already privately insured, firms' behavior, and the value of public versus private coverage. The article also suggests ways of making models more transparent and proposes "reference case" guidelines for modelers so that consumers can compare modeling results.

  8. Proposed Barge Terminal Expansion, Packer River Terminal, Inc., South St. Paul, Dakota County, Minnesota.

    Science.gov (United States)

    1977-09-01

    and Custom House St. Paul, MN 55101 11. CONTROLLING OFFICE NAME AND ADDRESS 12. REPORT DATE September 1977 13. NUMBER OF PAGES 103 14. MONITORING ...H WArER 70S t AA 1 TOPSOILI P LAC E 1v1 I C- NT"-’ -1 0 . " , A~h ,, 𔃻D--.-ToP L RE VAL/.AL.VAGE * 44 JOSl! Topsoil Removal/Placement Figure 11 9 20...welfare. Ambient Air Quality - Total Suspended Particulates 2.8 There were two ambient air quality monitoring stations near the proposed development

  9. 75 FR 52508 - Proposed Information Collection; Comment Request; Information and Communication Technology Survey

    Science.gov (United States)

    2010-08-26

    ... Census Bureau Proposed Information Collection; Comment Request; Information and Communication Technology... 2012 Information and Communication Technology Survey (ICTS). The annual survey collects data on two... of information and communication technology equipment and software (computers and...

  10. 78 FR 53195 - Proposed Information Collection (Dental Patient Satisfaction Survey) Activity: Comment Request

    Science.gov (United States)

    2013-08-28

    ... AFFAIRS Proposed Information Collection (Dental Patient Satisfaction Survey) Activity: Comment Request... patient satisfaction with VA's dental services. DATES: Written comments and recommendations on the... refer to ``OMB Control No. 2900-0764 (Dental Patient Satisfaction Survey)'' in any...

  11. 76 FR 70827 - Proposed Information Collection (Supplier Perception Survey) Activity; Comment Request

    Science.gov (United States)

    2011-11-15

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF VETERANS AFFAIRS Proposed Information Collection (Supplier Perception Survey) Activity; Comment Request AGENCY... Supplier Perception Survey. OMB Control Number: 2900-0751. Type of Review: Extension of previously...

  12. 77 FR 20887 - Proposed Information Collection (National Acquisition Center Customer Response Survey) Activity...

    Science.gov (United States)

    2012-04-06

    ... solicits comments on the information needed to measure customer satisfaction with delivered products and... AFFAIRS Proposed Information Collection (National Acquisition Center Customer Response Survey) Activity...: Department of Veterans Affairs (VA) National Acquisition Center Customer Response Survey, VA Form 0863....

  13. 75 FR 78225 - Proposed Information Collection; Comment Request; Survey of Minority-Owned Business Participation...

    Science.gov (United States)

    2010-12-15

    ... Minority Business Development Agency Proposed Information Collection; Comment Request; Survey of Minority-Owned Business Participation, Opportunities and Barriers to Global Commerce AGENCY: Minority Business... global commerce. The survey will provide valuable information on the markets minority businesses...

  14. Cultural Resource Survey Report. Hildebrand Ranch Area: Proposed Chatfield Arboretum.

    Science.gov (United States)

    1981-05-01

    on foot and digging test pits if they seemed useful. The pedestrian survey was accomplished in a standard manner by walking slowly in parallel zig - zag ...few hardy visitors on various military, exploratory or religious missions. After discovery of gold at Sutter’s Mill , and subsequently on Cherry Creek

  15. Information Gain in Cosmology: From the Discovery of Expansion to Future Surveys

    CERN Document Server

    Raveri, Marco; Zhao, Gongbo; Wang, Yuting

    2016-01-01

    Facing the advent of the next generation cosmological surveys we present a method to forecast knowledge gain on cosmological models. We propose this as a well defined and general tool to quantify the performance of different experiments in relation to different theoretical models. In particular, the assessment of experimental performance will benefit enormously from the fact that this method is invariant under re-parametrization of the model. We apply this to future surveys and compare expected knowledge advancements to the most relevant experiments performed over the history of modern cosmology. When considering the standard cosmological model, we show that it will rapidly reach knowledge saturation in the near future and forthcoming improvements will not match the past ones. On the contrary, we find that new observations have the potential for unprecedented knowledge jumps when extensions of the standard scenario are considered.

  16. Intel Teach to the Future[R] U.S. Classic Program and U.S. Expansion Program Master Teacher End of Training Survey. Summary Report. CCT Reports

    Science.gov (United States)

    Hupert, Naomi; Martin, Wendy; Kanaya, Tomoe

    2004-01-01

    This report compares findings from application data the End of Training surveys administered to Master Teachers (MTs) participating in the Classic version of Intel Teach to the Future and those who took part in the Expansion version of Intel Teach to the Future. Classic survey data were collected between March 2001 and July 2002. Expansion survey…

  17. 78 FR 77204 - Proposed Information Collection (VA National Veterans Sports Programs and Special Event Surveys...

    Science.gov (United States)

    2013-12-20

    ... AFFAIRS Proposed Information Collection (VA National Veterans Sports Programs and Special Event Surveys... ``OMB Control No. 2900-NEW (VA National Veterans Sports Programs and Special Event Surveys)'' in any... National Veterans Sports Programs and Special Event Surveys. OMB Control Number: 2900-NEW (VA...

  18. 75 FR 70940 - Notice of Proposed Information Collection for Public Comment: 2011 Rental Housing Finance Survey

    Science.gov (United States)

    2010-11-19

    ... Finance Survey AGENCY: Office of the Assistant Secretary for Policy Development and Research, HUD. ACTION... Rental Housing Finance Survey. OMB Control Number: 0000-0000. Description of the need for the information and proposed use: The Rental Housing Finance Survey (RHFS) provides a measure of financial,...

  19. 78 FR 40690 - Proposed Information Collection; Comment Request; Direct Investment Surveys: BE-577, Quarterly...

    Science.gov (United States)

    2013-07-08

    ... Bureau of Economic Analysis Proposed Information Collection; Comment Request; Direct Investment Surveys: BE-577, Quarterly Survey of U.S. Direct Investment Abroad: Transactions of U.S. Reporter With Foreign.... Abstract The Quarterly Survey of U.S. Direct Investment Abroad--Transactions of U.S. Reporter with...

  20. 77 FR 61777 - Notice of Submission of Proposed Information Collection to OMB Generic Customer Satisfaction Surveys

    Science.gov (United States)

    2012-10-11

    ... customer satisfaction surveys to gather feedback and data directly from our customers to determine the kind... lists the following information: Title of Proposed: Generic Customer Satisfaction Surveys. OMB Approval... this data directly from our customers. HUD will conduct various customer satisfaction surveys to...

  1. 76 FR 53402 - Proposed Information Collection; Comment Request; Quarterly Survey of Public Pensions

    Science.gov (United States)

    2011-08-26

    ... Census Bureau Proposed Information Collection; Comment Request; Quarterly Survey of Public Pensions... Quarterly Survey of Public Pensions (formerly known as the Finances of Selected Public Employee Retirement... Council of Economic Advisers and the Federal Reserve Board. The Quarterly Survey of Public Pensions...

  2. 78 FR 7393 - Proposed Information Collection; Comment Request; 2014 New York City Housing and Vacancy Survey

    Science.gov (United States)

    2013-02-01

    ... Vacancy Survey (NYCHVS) under contract for the City of New York. The primary purpose of the survey is to... format based on specifications of the survey sponsor, as well as non-identifiable microdata. Both types... invited on: (a) Whether the proposed collection of information is necessary for the proper performance...

  3. 77 FR 69539 - 30-Day Notice of Proposed Information Collection: Humphrey Evaluation Survey

    Science.gov (United States)

    2012-11-19

    ... Notice of Proposed Information Collection: Humphrey Evaluation Survey ACTION: Notice of request for public comment and submission to OMB of proposed collection of information. SUMMARY: The Department of... Information Collection: Humphrey Evaluation Survey. OMB Control Number: None. Type of Request: New...

  4. 76 FR 5393 - Notice of Submission of Proposed Information Collection to OMB; HUD Stakeholder Survey

    Science.gov (United States)

    2011-01-31

    ... URBAN DEVELOPMENT Notice of Submission of Proposed Information Collection to OMB; HUD Stakeholder Survey... subject proposal. This data collection will allow HUD to collect feedback from a wide range of stakeholder groups using a brief, optional survey to be completed in person at the end of each stakeholder event....

  5. 78 FR 66750 - Proposed Collection; 60-Day Comment Request; Customer and Other Partners Satisfaction Surveys

    Science.gov (United States)

    2013-11-06

    ... HUMAN SERVICES National Institutes of Health Proposed Collection; 60-Day Comment Request; Customer and Other Partners Satisfaction Surveys Summary: In compliance with the requirement of Section 3506(c)(2)(A... this publication. Proposed Collection: Title: Generic Clearance for Surveys of Customers and...

  6. Biomedical imaging ontologies: A survey and proposal for future work

    Directory of Open Access Journals (Sweden)

    Barry Smith

    2015-01-01

    Full Text Available Background: Ontology is one strategy for promoting interoperability of heterogeneous data through consistent tagging. An ontology is a controlled structured vocabulary consisting of general terms (such as "cell" or "image" or "tissue" or "microscope" that form the basis for such tagging. These terms are designed to represent the types of entities in the domain of reality that the ontology has been devised to capture; the terms are provided with logical defi nitions thereby also supporting reasoning over the tagged data. Aim: This paper provides a survey of the biomedical imaging ontologies that have been developed thus far. It outlines the challenges, particularly faced by ontologies in the fields of histopathological imaging and image analysis, and suggests a strategy for addressing these challenges in the example domain of quantitative histopathology imaging. Results and Conclusions: The ultimate goal is to support the multiscale understanding of disease that comes from using interoperable ontologies to integrate imaging data with clinical and genomics data.

  7. Overcoming Dietary Assessment Challenges in Low-Income Countries: Technological Solutions Proposed by the International Dietary Data Expansion (INDDEX) Project.

    Science.gov (United States)

    Coates, Jennifer C; Colaiezzi, Brooke A; Bell, Winnie; Charrondiere, U Ruth; Leclercq, Catherine

    2017-03-16

    An increasing number of low-income countries (LICs) exhibit high rates of malnutrition coincident with rising rates of overweight and obesity. Individual-level dietary data are needed to inform effective responses, yet dietary data from large-scale surveys conducted in LICs remain extremely limited. This discussion paper first seeks to highlight the barriers to collection and use of individual-level dietary data in LICs. Second, it introduces readers to new technological developments and research initiatives to remedy this situation, led by the International Dietary Data Expansion (INDDEX) Project. Constraints to conducting large-scale dietary assessments include significant costs, time burden, technical complexity, and limited investment in dietary research infrastructure, including the necessary tools and databases required to collect individual-level dietary data in large surveys. To address existing bottlenecks, the INDDEX Project is developing a dietary assessment platform for LICs, called INDDEX24, consisting of a mobile application integrated with a web database application, which is expected to facilitate seamless data collection and processing. These tools will be subject to rigorous testing including feasibility, validation, and cost studies. To scale up dietary data collection and use in LICs, the INDDEX Project will also invest in food composition databases, an individual-level dietary data dissemination platform, and capacity development activities. Although the INDDEX Project activities are expected to improve the ability of researchers and policymakers in low-income countries to collect, process, and use dietary data, the global nutrition community is urged to commit further significant investments in order to adequately address the range and scope of challenges described in this paper.

  8. Overcoming Dietary Assessment Challenges in Low-Income Countries: Technological Solutions Proposed by the International Dietary Data Expansion (INDDEX) Project

    Science.gov (United States)

    Coates, Jennifer C.; Colaiezzi, Brooke A.; Bell, Winnie; Charrondiere, U. Ruth; Leclercq, Catherine

    2017-01-01

    An increasing number of low-income countries (LICs) exhibit high rates of malnutrition coincident with rising rates of overweight and obesity. Individual-level dietary data are needed to inform effective responses, yet dietary data from large-scale surveys conducted in LICs remain extremely limited. This discussion paper first seeks to highlight the barriers to collection and use of individual-level dietary data in LICs. Second, it introduces readers to new technological developments and research initiatives to remedy this situation, led by the International Dietary Data Expansion (INDDEX) Project. Constraints to conducting large-scale dietary assessments include significant costs, time burden, technical complexity, and limited investment in dietary research infrastructure, including the necessary tools and databases required to collect individual-level dietary data in large surveys. To address existing bottlenecks, the INDDEX Project is developing a dietary assessment platform for LICs, called INDDEX24, consisting of a mobile application integrated with a web database application, which is expected to facilitate seamless data collection and processing. These tools will be subject to rigorous testing including feasibility, validation, and cost studies. To scale up dietary data collection and use in LICs, the INDDEX Project will also invest in food composition databases, an individual-level dietary data dissemination platform, and capacity development activities. Although the INDDEX Project activities are expected to improve the ability of researchers and policymakers in low-income countries to collect, process, and use dietary data, the global nutrition community is urged to commit further significant investments in order to adequately address the range and scope of challenges described in this paper. PMID:28300759

  9. Biomedical imaging ontologies: A survey and proposal for future work

    Science.gov (United States)

    Smith, Barry; Arabandi, Sivaram; Brochhausen, Mathias; Calhoun, Michael; Ciccarese, Paolo; Doyle, Scott; Gibaud, Bernard; Goldberg, Ilya; Kahn, Charles E.; Overton, James; Tomaszewski, John; Gurcan, Metin

    2015-01-01

    Background: Ontology is one strategy for promoting interoperability of heterogeneous data through consistent tagging. An ontology is a controlled structured vocabulary consisting of general terms (such as “cell” or “image” or “tissue” or “microscope”) that form the basis for such tagging. These terms are designed to represent the types of entities in the domain of reality that the ontology has been devised to capture; the terms are provided with logical definitions thereby also supporting reasoning over the tagged data. Aim: This paper provides a survey of the biomedical imaging ontologies that have been developed thus far. It outlines the challenges, particularly faced by ontologies in the fields of histopathological imaging and image analysis, and suggests a strategy for addressing these challenges in the example domain of quantitative histopathology imaging. Results and Conclusions: The ultimate goal is to support the multiscale understanding of disease that comes from using interoperable ontologies to integrate imaging data with clinical and genomics data. PMID:26167381

  10. 77 FR 58979 - Proposed Information Collection; Comment Request; Direct Investment Surveys: BE-15, Annual Survey...

    Science.gov (United States)

    2012-09-25

    ...: BE-15, Annual Survey of Foreign Direct Investment in the United States AGENCY: Bureau of Economic...@bea.gov . SUPPLEMENTARY INFORMATION: I. Abstract The Annual Survey of Foreign Direct Investment in the... foreign direct investment in the United States, assess its impact on the U.S. economy, and based upon...

  11. 78 FR 50374 - Proposed Information Collection; Comment Request; Information and Communication Technology Survey

    Science.gov (United States)

    2013-08-19

    ... Census Bureau Proposed Information Collection; Comment Request; Information and Communication Technology... Bureau plans to conduct the 2013 through 2015 Information and Communication Technology Survey (ICTS). The... leases and rental payments) for four types of information and communication technology equipment...

  12. 77 FR 64597 - Proposed Information Collection (Survey of Chronic Gastrointestinal Illness in Persian Gulf...

    Science.gov (United States)

    2012-10-22

    ... AFFAIRS Proposed Information Collection (Survey of Chronic Gastrointestinal Illness in Persian Gulf... the notice. This notice solicits comments on information needed to evaluate chronic gastrointestinal... comments on the collection of information through the Federal Docket Management System (FDMS) at...

  13. 76 FR 4635 - Proposed Information Collection; Comment Request; Economic Expenditure Survey of Golden Crab...

    Science.gov (United States)

    2011-01-26

    ... Expenditure Survey of Golden Crab Fishermen in the U.S. South Atlantic Region AGENCY: National Oceanic and... National Marine Fisheries Service (NMFS) proposes to collect economic information from golden-crab...

  14. 77 FR 10480 - Proposed Information Collection; Comment Request; Survey of Hawaii Resident Resource Users...

    Science.gov (United States)

    2012-02-22

    ... stewardship of reef resources. Conservation planners will gain information about the threats and status of... National Oceanic and Atmospheric Administration Proposed Information Collection; Comment Request; Survey of Hawaii Resident Resource Users' Knowledge, Attitudes and Perceptions of Coral Reefs in Two...

  15. 77 FR 6168 - 60-Day Notice of Proposed Information Collection: English Language Evaluation Surveys, OMB...

    Science.gov (United States)

    2012-02-07

    ... Information Collection: English Language Evaluation: Fulbright English Teaching Assistantship (ETA) Program... Notice of Proposed Information Collection: English Language Evaluation Surveys, OMB Control Number 1405...: Voluntary. Title of Information Collection: English Language Evaluation: English Language Specialist...

  16. 75 FR 55598 - Proposed Information Collection; The State of Ecosystem Services Implementation Survey

    Science.gov (United States)

    2010-09-13

    ....S. Geological Survey Proposed Information Collection; The State of Ecosystem Services Implementation...: I. Abstract Ecosystem goods and services are defined by ecologists as the biophysical processes that... regulation, pollination, and seed dispersal are considered ecosystem services. Indirect benefits are also...

  17. 77 FR 41173 - Notice of Proposed Information Collection Requests; Office of Postsecondary Education; Survey of...

    Science.gov (United States)

    2012-07-12

    ... under this title to determine postgraduate employment, education, or training. All grantees, where... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF EDUCATION Notice of Proposed Information Collection Requests; Office of Postsecondary Education; Survey of...

  18. Cultural Resource Survey of Proposed Ditch Plugs Near Troublesome Creek in Marion County, Missouri

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — A phase I cultural resource survey was conducted for the US Department of the Interior, Fish and Wildlife Service, of three proposed ditch plugs to be constructed...

  19. 78 FR 42761 - Proposed Information Collection-2014 Election Administration and Voting Survey; Comment Request

    Science.gov (United States)

    2013-07-17

    ... From the Federal Register Online via the Government Publishing Office ELECTION ASSISTANCE... this proposed information collection (2014 Election Administration and Voting Survey) to the Director... data collection requirements under the Uniformed and Overseas Citizens Absentee Voting Act (UOCAVA...

  20. 78 FR 78345 - Proposed Information Collection-2014 Election Administration and Voting Survey; Comment Request

    Science.gov (United States)

    2013-12-26

    ... From the Federal Register Online via the Government Publishing Office ELECTION ASSISTANCE... this proposed information collection (2014 Election Administration and Voting Survey) to the Director... data collection requirements under the Uniformed and Overseas Citizens Absentee Voting Act (UOCAVA...

  1. 78 FR 15800 - 30-Day Notice of Proposed Information Collection: Exchange Student Survey

    Science.gov (United States)

    2013-03-12

    ... Notice of Proposed Information Collection: Exchange Student Survey ACTION: Notice of request for public... INFORMATION: Title of Information Collection: ECA Exchange Student Surveys. OMB Control Number: none. Type of...: SV2012-0007 (Foreign Exchange students) and SV2012-0010 (U.S. Exchange students). Respondents: Exchange...

  2. 77 FR 75251 - 60-Day Notice of Proposed Information Collection: ECA Exchange Student Surveys

    Science.gov (United States)

    2012-12-19

    ... Notice of Proposed Information Collection: ECA Exchange Student Surveys ACTION: Notice of request for...: ] Title of Information Collection: ECA Exchange Student Surveys. OMB Control Number: None. Type of Request...: SV2012-0007 (Foreign Exchange students) and SV2012-0010 (U.S. Exchange students). Respondents: Exchange...

  3. 75 FR 16912 - Proposed Information Collection (Dental Patient Satisfaction Survey) Activity: Comment Request

    Science.gov (United States)

    2010-04-02

    ... AFFAIRS Proposed Information Collection (Dental Patient Satisfaction Survey) Activity: Comment Request... measure patients' satisfaction with VA's dental services. DATES: Written comments and recommendations on..., Dental Patient Satisfaction Survey, VA Form 10-0503. OMB Control Number: 2900-New (VA Form 10-0503)....

  4. 78 FR 54622 - Proposed Information Collection; Comment Request; Current Population Survey, Annual Social and...

    Science.gov (United States)

    2013-09-05

    ... Census Bureau Proposed Information Collection; Comment Request; Current Population Survey, Annual Social... concerning the Annual Social and Economic Supplement (ASEC) to be conducted in conjunction with the February, March, and April Current Population Survey (CPS). The Census Bureau has conducted this...

  5. 76 FR 54283 - 30-Day Notice of Proposed Information Collections: Language Learning Survey Questions

    Science.gov (United States)

    2011-08-31

    ... Notice of Proposed Information Collections: Language Learning Survey Questions ACTION: Notice of request... Information Collection: Language Learning Programs: Pre Program Survey Questions OMB Control Number: None Type... participants in ECA exchange programs that focus on critical language learning instruction. Estimated Number of...

  6. 77 FR 31566 - Proposed Information Collection; Comment Request; 2012 Survey of Business Owners and Self...

    Science.gov (United States)

    2012-05-29

    ... intellectual ] property rights and business success led to the addition of a question on whether the business.... Census Bureau Proposed Information Collection; Comment Request; 2012 Survey of Business Owners and Self... Survey of Business Owners and Self-Employed Persons (SBO). In the SBO, businesses are asked...

  7. 76 FR 22714 - Proposed Collection; Comment Request; Health Information National Trends Survey 4 (HINTS 4) (NCI)

    Science.gov (United States)

    2011-04-22

    ... understand vital cancer prevention messages. More importantly, this NCI survey will couple knowledge-related... National Trends Survey 4 (HINTS 4) (NCI) SUMMARY: In compliance with the requirement of Section 3506(c)(2... publish periodic summaries of proposed projects to be submitted to the Office of Management and Budget...

  8. 76 FR 38203 - Proposed Information Collection; North American Woodcock Singing Ground Survey

    Science.gov (United States)

    2011-06-29

    ... Fish and Wildlife Service Proposed Information Collection; North American Woodcock Singing Ground... migratory bird populations. The North American Woodcock Singing Ground Survey is an essential part of the... Woodcock Singing Ground Survey. Service Form Number(s): 3-156. Type of Request: Extension of currently...

  9. 78 FR 36788 - Proposed Collection; 60-Day Comment Request; Awareness and Beliefs About Cancer Survey, National...

    Science.gov (United States)

    2013-06-19

    ... Beliefs About Cancer Survey, National Cancer Institute (NCI) Summary: In compliance with the requirement... this publication. Proposed Collection: Awareness and Beliefs about Cancer Survey, 0925-NEW, National... objective of the study is gather data about American adults' awareness and beliefs about cancer....

  10. 76 FR 19975 - Proposed Information Collection; Comment Request; Survey of Building and Zoning Permit Systems

    Science.gov (United States)

    2011-04-11

    ... Census Bureau Proposed Information Collection; Comment Request; Survey of Building and Zoning Permit..., Survey of Building and Zoning Permit Systems. The Census Bureau produces statistics used to monitor... depends on data supplied by building and zoning officials throughout the country. The Census Bureau...

  11. 77 FR 74280 - Proposed Information Collection (Learner's Perception (LP) Survey); Comment Request

    Science.gov (United States)

    2012-12-13

    ... AFFAIRS Proposed Information Collection (Learner's Perception (LP) Survey); Comment Request AGENCY.... Title: Learner's Perception (LP) Survey, VA Form 10-0439. OMB Control Number: 2900-0691. Type of Review... trainees perception of their clinical experience with VA versus non-VA facilities. VA will use the data...

  12. 78 FR 60020 - Proposed Collection: Comment Request for Voluntary Customer Satisfaction Surveys

    Science.gov (United States)

    2013-09-30

    ... Bureau of the Fiscal Service Proposed Collection: Comment Request for Voluntary Customer Satisfaction... Customer Satisfaction Survey. DATES: Written comments should be received on or before November 30, 2013 to...: Title: Voluntary Customer Satisfaction Survey to Implement Executive Order 12862 OMB Number:...

  13. 77 FR 2349 - Proposed Information Collection (Nation-wide Customer Satisfaction Surveys) Activity: Comment...

    Science.gov (United States)

    2012-01-17

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF VETERANS AFFAIRS Proposed Information Collection (Nation-wide Customer Satisfaction Surveys) Activity: Comment... forms of information technology. Title: Nation-wide Customer Satisfaction Surveys, VA Forms 10-1465-...

  14. 75 FR 9277 - Proposed Information Collection (Nation-Wide Customer Satisfaction Surveys) Activity: Comment...

    Science.gov (United States)

    2010-03-01

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF VETERANS AFFAIRS Proposed Information Collection (Nation-Wide Customer Satisfaction Surveys) Activity: Comment.... Title: Nation-wide Customer Satisfaction Surveys, VA Forms 1465-2 through 1465-4. OMB Control...

  15. 75 FR 34758 - Proposed Information Collection; OMB Control Number 1018-0023; Migratory Bird Surveys

    Science.gov (United States)

    2010-06-18

    ... Fish and Wildlife Service Proposed Information Collection; OMB Control Number 1018-0023; Migratory Bird Surveys AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice; request for comments. SUMMARY: We... regulations as needed. II. Data OMB Control Number: 1018-0023. Title: Migratory Bird Surveys. Service Form...

  16. 76 FR 67557 - Proposed Information Collection (Survey of Veteran Enrollees' Health and Reliance Upon VA...

    Science.gov (United States)

    2011-11-01

    ... use of other forms of information technology. Title: Survey of Veteran Enrollees' Health and Reliance... on population-based budget formulation, policy scenario testing, and strategic planning. Affected... AFFAIRS Proposed Information Collection (Survey of Veteran Enrollees' Health and Reliance Upon VA...

  17. 76 FR 24457 - Proposed Information Collection; Comment Request; Survey of Income and Program Participation...

    Science.gov (United States)

    2011-05-02

    ... the income and general economic and financial situation of the U.S. population, which the SIPP has... Census Bureau Proposed Information Collection; Comment Request; Survey of Income and Program...'' over the life of the panel. The survey is molded around a central ``core'' of labor force and...

  18. 76 FR 79650 - Proposed Information Collection; Comment Request; Survey of Income and Program Participation...

    Science.gov (United States)

    2011-12-22

    ... the income and general economic and financial situation of the U.S. population, which the SIPP has.... Census Bureau Proposed Information Collection; Comment Request; Survey of Income and Program... of the panel. The survey is molded around a central ``core'' of labor force and income questions...

  19. 77 FR 10033 - 30-Day Notice of Proposed Information Collection: Gender Assessment Surveys, OMB Control Number...

    Science.gov (United States)

    2012-02-21

    ... Notice of Proposed Information Collection: Gender Assessment Surveys, OMB Control Number 1405-xxxx ACTION... Information Collection: Gender Assessment Surveys. OMB Control Number: None. Type of Request: New Collection. Originating Office: Bureau of Educational and Cultural Affairs, Office of Policy and Evaluation,...

  20. 75 FR 67992 - Notice of Proposed Information Collection: Comment Request; HUD Stakeholder Survey

    Science.gov (United States)

    2010-11-04

    ... of Proposed Information Collection: Comment Request; HUD Stakeholder Survey AGENCY: Office of the... Stakeholder Survey. OMB Control Number, if applicable: 2501-New. Description of the need for the information... groups nationwide designed to educate stakeholders about HUD initiatives and policies. This...

  1. 78 FR 58344 - Proposed Information Collection: Colorado River Total Value Survey

    Science.gov (United States)

    2013-09-23

    ... National Park Service Proposed Information Collection: Colorado River Total Value Survey AGENCY: National... Colorado River riparian resource, and on alternative flow release scenarios from Glen Canyon Dam designed to protect canyon flora and fauna. The final survey will provide information for the...

  2. 78 FR 19190 - Proposed Information Collection; Comment Request; 2013 Company Organization Survey

    Science.gov (United States)

    2013-03-29

    .... Census Bureau Proposed Information Collection; Comment Request; 2013 Company Organization Survey AGENCY... agencies to take this opportunity to comment on proposed and/or continuing information collections, as....gov ). FOR FURTHER INFORMATION CONTACT: Requests for additional information or copies of the...

  3. 76 FR 71511 - Proposed Information Collection; Comment Request; 2012 Company Organization Survey

    Science.gov (United States)

    2011-11-18

    .... Census Bureau Proposed Information Collection; Comment Request; 2012 Company Organization Survey AGENCY... agencies to take this opportunity to comment on proposed and/or continuing information collections, as....gov ). FOR FURTHER INFORMATION CONTACT: Requests for additional information or copies of the...

  4. 76 FR 17819 - Proposed Information Collection; Comment Request; Direct Investment Surveys: BE-15, Annual Survey...

    Science.gov (United States)

    2011-03-31

    ...: BE-15, Annual Survey of Foreign Direct Investment in the United States ACTION: Notice. SUMMARY: The... of Foreign Direct Investment in the United States (Form BE-15) obtains sample data on the financial..., useful, and timely measures of foreign direct investment in the United States, assess its impact on the...

  5. The WiggleZ Dark Energy Survey: Joint measurements of the expansion and growth history at z < 1

    CERN Document Server

    Blake, Chris; Colless, Matthew; Contreras, Carlos; Couch, Warrick; Croom, Scott; Croton, Darren; Davis, Tamara; Drinkwater, Michael J; Forster, Karl; Gilbank, David; Gladders, Mike; Glazebrook, Karl; Jelliffe, Ben; Jurek, Russell J; Li, I-hui; Madore, Barry; Martin, Chris; Pimbblet, Kevin; Poole, Gregory B; Pracy, Michael; Sharp, Rob; Wisnioski, Emily; Woods, David; Wyder, Ted; Yee, Howard

    2012-01-01

    We perform a joint determination of the distance-redshift relation and cosmic expansion rate at redshifts z = 0.44, 0.6 and 0.73 by combining measurements of the baryon acoustic peak and Alcock-Paczynski distortion from galaxy clustering in the WiggleZ Dark Energy Survey, using a large ensemble of mock catalogues to calculate the covariance between the measurements. Further combining our results with other baryon acoustic oscillation and distant supernovae datasets, we use a Monte Carlo Markov Chain technique to determine the evolution of the Hubble parameter H(z) as a stepwise function in 9 redshift bins of width dz = 0.1, also marginalizing over the spatial curvature. Our measurements of H(z), which have precision better than 7% in most redshift bins, are consistent with the expansion history predicted by a cosmological-constant dark-energy model, in which the expansion accelerates at redshift z < 0.7. We also measure the normalized cosmic growth rate at z = 0.44, 0.6 and 0.73, together with its covarian...

  6. 77 FR 43899 - 60-Day Notice of Proposed Information Collection: Humphrey Evaluation Survey

    Science.gov (United States)

    2012-07-26

    ... Notice of Proposed Information Collection: Humphrey Evaluation Survey ACTION: Notice of request for... accordance with the Paperwork Reduction Act of 1995. Title of Information Collection: Humphrey Evaluation...) approval for the information collection described below. The purpose of this notice is to allow 60 days...

  7. 76 FR 9607 - Notice of Proposed Information Collection for Technical Evaluation Surveys

    Science.gov (United States)

    2011-02-18

    ... its approval of the collection of information contained in a series of technical evaluation customer... information collection activity: Title: Technical Evaluation Surveys. OMB Control Number: 1029-0114. Summary... Office of Surface Mining Reclamation and Enforcement Notice of Proposed Information Collection...

  8. 75 FR 55585 - Proposed Collection; Comment Request; Generic Clearance for Surveys of Customers and Partners of...

    Science.gov (United States)

    2010-09-13

    ... Act of 1995, for opportunity for public comment on proposed data collection projects, the Office of... customer satisfaction input on various elements of OER's business processes. The approximately 14 (10 quantitative and 4 qualitative) customer satisfaction surveys that will be conducted under this generic...

  9. 78 FR 76313 - Proposed Information Collection; Survey of Residents' Attitudes on Jaguar Conservation

    Science.gov (United States)

    2013-12-17

    ... Fish and Wildlife Service Proposed Information Collection; Survey of Residents' Attitudes on Jaguar... Drive, Arlington, VA 22203 (mail); or hope_grey@fws.gov (email). Please include ``1018-Jaguar Resident... perspectives on attitudes towards and beliefs about jaguars in the Northwestern Recovery Unit (southern Arizona...

  10. 77 FR 53208 - Notice of Proposed Information Collection for Public Comment: Survey of Manufactured (Mobile...

    Science.gov (United States)

    2012-08-31

    ... Act. The Department is soliciting public comments on the subject proposal. DATES: Comments Due Date..., the Survey of Manufactured (Mobile) Home Placements serves as the basis for HUD's mandated indexing of... develop a method of indexing to annually adjust Title I manufactured home loan limits. This index is...

  11. 78 FR 45910 - Proposed Information Collection; Comment Request; Current Population Survey (CPS) Email Address...

    Science.gov (United States)

    2013-07-30

    ... Census Bureau Proposed Information Collection; Comment Request; Current Population Survey (CPS) Email... concerning the November 2013 Email Address Collection Test Supplement. The Census Bureau and the Bureau of.... We foresee that in the future, we could collect email addresses from our respondents. For those that...

  12. Feasibility analysis in the expansion proposal of the nuclear power plant Laguna Verde: application of real options, binomial model; Analisis de viabilidad en la propuesta de expansion de la central nucleoelectrica Laguna Verde: aplicacion de opciones reales, modelo binomial

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez I, S.; Ortiz C, E.; Chavez M, C., E-mail: lunitza@gmail.com [UNAM, Facultad de Ingenieria, Circuito Interior, Ciudad Universitaria, 04510 Mexico D. F. (Mexico)

    2011-11-15

    At the present time, is an unquestionable fact that the nuclear electrical energy is a topic of vital importance, no more because eliminates the dependence of the hydrocarbons and is friendly with the environment, but because is also a sure and reliable energy source, and represents a viable alternative before the claims in the growing demand of electricity in Mexico. Before this panorama, was intended several scenarios to elevate the capacity of electric generation of nuclear origin with a variable participation. One of the contemplated scenarios is represented by the expansion project of the nuclear power plant Laguna Verde through the addition of a third reactor that serves as detonator of an integral program that proposes the installation of more nuclear reactors in the country. Before this possible scenario, the Federal Commission of Electricity like responsible organism of supplying energy to the population should have tools that offer it the flexibility to be adapted to the possible changes that will be presented along the project and also gives a value to the risk to future. The methodology denominated Real Options, Binomial model was proposed as an evaluation tool that allows to quantify the value of the expansion proposal, demonstrating the feasibility of the project through a periodic visualization of their evolution, all with the objective of supplying a financial analysis that serves as base and justification before the evident apogee of the nuclear energy that will be presented in future years. (Author)

  13. Assessing the Impact of Research: A Case Study of the LSAY Research Innovation and Expansion Fund. Longitudinal Surveys of Australian Youth. Occasional Paper

    Science.gov (United States)

    Hargreaves, Jo

    2012-01-01

    The purpose of this project is to apply the framework developed by the National Centre for Vocational Education Research (NCVER) for measuring research impact to assess the outcomes of the research and activities funded under the Longitudinal Surveys of Australian Youth (LSAY) Research Innovation and Expansion Fund (RIEF). LSAY provides a rich…

  14. Intel[R] Teach to the Future U.S. Implementation, Classic and Expansion Teachers 2004 End of School Year Survey Summary. CCT Reports

    Science.gov (United States)

    Martin, Wendy; Hupert, Naomi; Kanaya, Tomoe; Dial, Christopher

    2004-01-01

    Intel[R] Teach to the Future was designed to prepare teachers to use technology with their students. This report provides an analysis of findings from an End of School Year survey administered in April 2004 to participants in both the Classic and Expansion versions of Intel Teach to the Future (U.S. implementation only). The analysis compares…

  15. 77 FR 58864 - Public Land Order No. 7801; Withdrawal of Public Lands for Protection of Proposed Expansion of...

    Science.gov (United States)

    2012-09-24

    ... status quo of the lands and mineral estate included in the proposed training land acquisition/airspace... laws, and the mineral material laws, to protect the status quo of the lands pending action on an... Palms; CA AGENCY: Bureau of Land Management, Interior. ACTION: Public land order. SUMMARY: This...

  16. 77 FR 22068 - Proposed Information Collection (Post-9/11 GI Bill Education Longitudinal Study Survey) Activity...

    Science.gov (United States)

    2012-04-12

    ... AFFAIRS [OMB Control No. 2900-New (Post-9/11 GI Bill Longitudinal Study Survey)] Proposed Information Collection (Post-9/11 GI Bill Education Longitudinal Study Survey) Activity: Comment Request AGENCY: Veterans... . Please refer to ``OMB Control No. 2900-New (Post-9/11 GI Bill Longitudinal Study Survey)'' in any...

  17. Wetland and Sensitive Species Survey Report for Y-12: Proposed Uranium Processing Facility (UPF)

    Energy Technology Data Exchange (ETDEWEB)

    Giffen, N.; Peterson, M.; Reasor, S.; Pounds, L.; Byrd, G.; Wiest, M. C.; Hill, C. C.

    2009-11-01

    This report summarizes the results of an environmental survey conducted at sites associated with the proposed Uranium Processing Facility (UPF) at the Y-12 National Security Complex in September-October 2009. The survey was conducted in order to evaluate potential impacts of the overall project. This project includes the construction of a haul road, concrete batch plant, wet soil storage area and dry soil storage area. The environmental surveys were conducted by natural resource experts at ORNL who routinely assess the significance of various project activities on the Oak Ridge Reservation (ORR). Natural resource staff assistance on this project included the collection of environmental information that can aid in project location decisions that minimize impacts to sensitive resource such as significant wildlife populations, rare plants and wetlands. Natural resources work was conducted in various habitats, corresponding to the proposed areas of impact. Thc credentials/qualifications of the researchers are contained in Appendix A. The proposed haul road traverses a number of different habitats including a power-line right-of-way. wetlands, streams, forest and mowed areas. It extends from what is known as the New Salvage Yard on the west to the Polaris Parking Lot on the east. This haul road is meant to connect the proposed concrete batch plant to the UPF building site. The proposed site of the concrete batch plant itself is a highly disturbed fenced area. This area of the project is shown in Fig. 1. The proposed Wet Soils Disposal Area is located on the north side of Bear Creek Road at the former Control Burn Study Area. This is a second growth arce containing thick vegetation, and extensive dead and down woody material. This area of the project is shown in Fig. 2. Thc dry soils storage area is proposed for what is currently known as the West Borrow Area. This site is located on the west side of Reeves Road south of Bear Creek Road. The site is an early successional

  18. National Energy Plan 2030: a proposal for power generation expansion in the long term; Plano Nacional de Energia 2030: uma proposta de expansao para a geracao de energia eletrica no longo prazo

    Energy Technology Data Exchange (ETDEWEB)

    Guerreiro, Amilcar Goncalves; Pereira Junior, Amaro Olimpio; Lopes, Juarez Castrillon; Tavares, Marina Elisabete E.; Silva, Renata de A.M. da; Queiroz, Renato P.; Oliveira, Ricardo G. de [Empresa de Pesquisa Energetica (EPE), Brasilia, DF (Brazil)

    2008-07-01

    The article aims to present and discuss a proposal for electric energy expansion generation capacity in long term. This work identifies the most appropriate evolution of the hydrothermal mix for the expansion of the supply of electrical power in the country, over the horizon of planning by 2030. (author)

  19. [Proposal for a survey for assisting the family and caregivers of patients with spinal cord injuries].

    Science.gov (United States)

    Mancussi e Faro, A C

    1999-12-01

    This study proposes a basis survey for assistance to the family and caregivers because we believe there is necessity of family participation on the treatment, trying to understand and share the disease or deficiency situation. We objectified to sketch the relationship degree and the people's gender that accompanied the spinal cord injured hurt medular patient in nursing consultations and to discuss the necessity of basis survey to the assistance family and to the caregiver. 101 nursing consultations were accomplished, in clinic health, to the spinal cord injured patient and his/her relative and 36 patients were totalized, from this number 26 (72.22%) were male and 10 (27.78%), were female. It was verified that the men with medular lesion, in the greater number (27-80.7 O/o), were accompanied with his relatives specially mother and wife, while the women with medular lesion, in the greater number too (7-70%) were accompanied with her relatives of diversified proximity. In reference to the basis survey that comprehend the care at house and the caregiver necessity, we can affirm its relevance, trying to context the family support identified attending the caregivers.

  20. Proposals for Changes in Surveying-Legal Procedures for the Needs of Cadastre in Poland

    Science.gov (United States)

    Mika, Monika

    2016-12-01

    The aim of this paper is to present the need for changes of geodetic-legal procedures for the cadastre and real estate management. This problem was analyzed both in theoretical and practical terms. In order to better present the analyzed technical and legal procedures, a study of several cases of surveying documentation was made. On their example the problems associated with the surveying services were shows and the formal and legal procedures, on the basis of which described surveying works were done were verified. The problem presented is current and valid not only for the comfort of the surveyor's work, but also from the point of view of the structure and modernization of the real estate cadastre, constituting the backbone of the real estate management. The article emphasized the need to unify the databases of state registers and the digitization of the National Geodetic and Cartographic Resources (PZDGiK). Research has shown that despite the continuous changes of legislation, there are still many shortcomings and gaps, which often complicate the surveying works. The surveyor must analyze and verify all materials he uses, including those obtained from the Centre of Geodetic and Cartographic Documentation (ODGiK). The quality of the geodetic and cartographic elaboration depends largely on the work of the Centre of Geodetic and Cartographic Documentation. The need of modernization of the Land and Buildings Registry, which acts as a cadastre in Poland, has been demonstrated. Furthermore, the unification of data used as reference systems both for plane coordinates and elevation has been proposed.

  1. Baseline Radionuclide and Nonradionuclide Concentrations in Soils, Vegetation, and Small Mammals at the Proposed Expansion Area at TA-54 Area G

    Energy Technology Data Exchange (ETDEWEB)

    D. D. Romero, P. R. Fresquez

    2007-11-30

    Area G is a 25.5-hectare (63-acre), fenced, low-level radioactive solid waste processing and disposal area located on the east end of Mesa del Buey at Technical Area 54 at Los Alamos National Laboratory. This disposal area has been in existence since 1957 and is expected to be filled by the year 2015. Thus, a new area, located adjacent to Area G on the west side, has been proposed for the expansion of disposal activities. Since 1994 to the present, baseline levels of several radionuclides and nonradionuclides have been collected in soils, vegetation, and small mammals (field mice and rock squirrels). These data will be used to assess potential impacts, if any, at the expanded site once operations begin. Baseline statistical reference levels (BSRLs) (mean plus three standard deviations = 99% confidence level) of radionuclides and nonradionuclides in these media were calculated and compared with regional statistical reference levels (RSRLs). RSRLs are calculated from regional areas away from the influence of the Laboratory and represent natural and worldwide fallout sources. BSRLs in most media, with the exception of field mice (mostly Peromyscus spp.), compare very well with RSRLs. Field mice, probably because they are mobile and may have spent time within the active disposal area, appeared to be impacted by Area G operations as they contained higher concentrations of {sup 3}H, {sup 238}Pu, {sup 239,240}Pu, and {sup 241}Am as compared to RSRLs. Overall, however, the preoperational data from the other media show that the proposed expansion area has been impacted very little by Area G operations.

  2. 76 FR 22409 - Notice of Submission of Proposed Information Collection to OMB 2012 Rental Housing Finance Survey...

    Science.gov (United States)

    2011-04-21

    ... Finance Survey (RHFS) AGENCY: Office of the Chief Information Officer, HUD. ACTION: Notice. SUMMARY: The... Residential Finance Survey. DATES: Comments Due Date: May 23, 2011. ADDRESSES: Interested persons are invited... responses. This notice also lists the following information: Title of Proposal: 2012 Rental Housing...

  3. 78 FR 6851 - Proposed Information Collection (Patient Satisfaction Survey Michael E. DeBakey Home Care Program...

    Science.gov (United States)

    2013-01-31

    ... AFFAIRS Proposed Information Collection (Patient Satisfaction Survey Michael E. DeBakey Home Care Program....'' SUPPLEMENTARY INFORMATION: Title: Patient Satisfaction Survey Michael E. DeBakey Home Care Program, VA Form 10.... Abstract: VA Form 10-0476 will be used to gather feedback from patients regarding their satisfaction...

  4. 75 FR 62635 - Proposed Information Collection (Patient Satisfaction Survey Michael E. DeBakey Home Care Program...

    Science.gov (United States)

    2010-10-12

    ... AFFAIRS Proposed Information Collection (Patient Satisfaction Survey Michael E. DeBakey Home Care Program... needed to determine patients' satisfaction with services provided by or through the Michael E. DeBakey.... Title: Patient Satisfaction Survey Michael E. DeBakey Home Care Program, VA Form 10-0476. OMB...

  5. 77 FR 69550 - Proposed Information Collection (Patient Satisfaction Survey Michael E. DeBakey Home Care Program...

    Science.gov (United States)

    2012-11-19

    ... AFFAIRS Proposed Information Collection (Patient Satisfaction Survey Michael E. DeBakey Home Care Program.... This notice solicits comments on information needed to determine patients' satisfaction with services... information technology. Title: Patient Satisfaction Survey Michael E. DeBakey Home Care Program, VA Form...

  6. 76 FR 624 - Proposed Information Collection (Patient Satisfaction Survey Michael E. DeBakey Home Care Program...

    Science.gov (United States)

    2011-01-05

    ... AFFAIRS Proposed Information Collection (Patient Satisfaction Survey Michael E. DeBakey Home Care Program.... 2900-New (VA Form 10-0476).'' SUPPLEMENTARY INFORMATION: Title: Patient Satisfaction Survey Michael E... Review: New collection. Abstract: VA Form 10-0476 will be used to gather feedback from patients...

  7. 76 FR 39966 - 30-Day Notice of Proposed Information Collections: ECA/P/V Youth and Leadership Survey Questions

    Science.gov (United States)

    2011-07-07

    ... Notice of Proposed Information Collections: ECA/P/V Youth and Leadership Survey Questions ACTION: Notice... Information Collection: ECA/P/V Youth and Leadership Programs: Pre Program Survey Questions. OMB Control.... Respondents: Participants in ECA exchange programs that focus on youth and leadership. Specifically...

  8. 76 FR 58520 - Proposed Collection; Comment Request; Cancer Risk in U.S. Radiologic Technologists: Fourth Survey...

    Science.gov (United States)

    2011-09-21

    .... Radiologic Technologists: Fourth Survey (NCI) SUMMARY: In compliance with the requirement of Section 3506(c... review and approval. Proposed Collection: Title: Cancer Risk in U.S. Radiologic Technologists: Fourth... a fourth cohort follow-up survey in an ongoing cohort study of U.S. Radiologic Technologists...

  9. 75 FR 32191 - National Health and Nutrition Examination Survey (NHANES) DNA Samples: Guidelines for Proposals...

    Science.gov (United States)

    2010-06-07

    ... HUMAN SERVICES Centers for Disease Control and Prevention National Health and Nutrition Examination...: The National Health and Nutrition Examination Survey (NHANES) is a program of periodic surveys... Health and Nutrition Examination Surveys, National Center for Health Statistics, Centers for Disease...

  10. Survey of proposed functional requirements for a disturbance analysis and surveillance system

    Energy Technology Data Exchange (ETDEWEB)

    Sides, W.H. Jr.; Oh, C.B.; Knight, P.F.

    1980-10-01

    A program to enhance the capabilities of operators of nuclear power plants is being pursued by the US Nuclear Regulatory Commission (NRC). The program includes improvements in plant monitoring, diagnostic and corrective action aids, operator-process communication, and operator training. Concerning diagnostic aids, a disturbance analysis and surveillance system (DASS) was considered which would monitor the plant for the approach or occurrence of disturbance conditions and would assist the operator in returning the plant to normal operation or to help mitigate the consequences of a failure condition or misoperation. The NRC had requested Oak Ridge National Laboratory to survey the functional requirements being proposed for a DASS. In fulfilling this task, the proposed requirements were categorized according to whether they could be realized in the short term and backfitted to existing plants or whether they could be realized only in the long term by incorporation into new plant designs. In addition, several recommendations concerning DASS development were made for consideration by the NRC. Finally, the effects of human factors on a DASS were evaluated, and the results are discussed in this report. 12 refs., 6 figs.

  11. 75 FR 63194 - Notice of Proposed Information Collection for Public Comment on the Follow-Up Survey and Data...

    Science.gov (United States)

    2010-10-14

    ... URBAN DEVELOPMENT Notice of Proposed Information Collection for Public Comment on the Follow-Up Survey... information technology that will reduce burden, (e.g., permitting electronic submission of responses). This Notice also lists the following information: Title of Proposal: Evaluation of the Rapid Re-housing for...

  12. What Americans think of the new insurance marketplaces and Medicaid expansion: findings from the Commonwealth Fund Health Insurance Marketplace Survey, 2013.

    Science.gov (United States)

    Collins, Sara R; Rasmussen, Petra W; Doty, Michelle M; Garber, Tracy

    2013-09-01

    The Affordable Care Act's health insurance marketplaces are opening for enrollment on October 1, 2013. The Commonwealth Fund Health Insurance Marketplace Survey, 2013, finds that only two of five adults are aware of the marketplaces or of potential financial help that may be available to them to pay for plans purchased though the marketplaces. However, three of five adults who might be eligible for these new options said they were likely to take advantage of them. The survey also finds broad support for state expansion of the Medicaid program, even in states that have not yet decided to expand their programs. While outreach and education are critical to ensuring that those eligible for the new coverage options will enroll, the survey results suggest that eligible Americans will likely take advantage of the law's insurance reforms in the months and years to come.

  13. A survey of stakeholder perspectives on a proposed combined exoskeleton-wheelchair technology.

    Science.gov (United States)

    Bhatnagar, Tim; Ben Mortensen, W; Mattie, Johanne; Wolff, Jamie; Parker, Claire; Borisoff, Jaimie

    2017-07-01

    Exoskeleton technology has potential benefits for wheelchair users' health and mobility. However, there are practical barriers to their everyday use as a mobility device. In particular, challenges related to travelling longer distances and transitioning between using a wheelchair and exoskeleton walking may present significant deterrents to regular exoskeleton use. In an effort to remove these barriers, a combined exoskeleton-wheelchair concept ('COMBO') has been proposed, which aims to achieve the benefits of both these mobility technologies. Given the inherent importance of including user-stakeholder opinions when designing an assistive technology solution, a study was undertaken to explore the perspectives of wheelchair users and healthcare professionals on the proposed conceptual design of the COMBO. An online survey with quantitative and qualitative components was conducted with wheelchair users and healthcare professionals working directly with individuals with mobility impairments. Respondents rated whether they would use or recommend a COMBO for four potential reasons. Nine design features were rated and compared in terms of their importance. Content analysis was used to analyze data from an open-ended question regarding additional perceptions about using or recommending a COMBO. A total of 481 survey responses were analyzed, 354 from wheelchair users and 127 from healthcare professionals. Potential health benefits was the most highly rated reason for potential use or recommendation of a COMBO. Of the 9 design features, 2 had a median rating of very important: inclusion of a fall-protection mechanism, and the ability for the operator to use their hands while standing. Qualitative findings indicated that health and physical benefits, use for daily life activities, and psychosocial benefits were important considerations in whether to use or recommend the COMBO. This study captures the opinions and perspectives of two stakeholder groups for an exoskeleton

  14. Enhanced Survey and Proposal to secure the data in Cloud Computing Environment

    Directory of Open Access Journals (Sweden)

    MR.S.SUBBIAH

    2013-01-01

    Full Text Available Cloud computing have the power to eliminate the cost of setting high end computing infrastructure. It is a promising area or design to give very flexible architecture, accessible through the internet. In the cloud computing environment the data will be reside at any of the data centers. Due to that, some data center may leak the data stored on there, beyond the reach and control of the users. For this kind of misbehaving data centers, the service providers should take care of the security and privacy of the data stored in the data centers through the cloud computing environment. This survey paper try to elaborate and analyze the various unresolved issues in the cloud computing environment and try to propose an alternate method which can be useful to the various kind of users who are willing to get into the new era of cloud computing. Moreover this paper try to give some suggestions in the area of Securing the data while storing the data in the cloud server, implement new Data displacement strategies, Service Level Agreement between the user and the Cloud Service Provider and finally how to improve the Quality of Service.

  15. U.S. Geological Survey Would Fare Well in Proposed Federal Budget

    Science.gov (United States)

    Showstack, Randy

    2010-02-01

    The U.S. Geological Survey (USGS) is among the U.S. federal science agencies that would see significant funding increases if Congress approves the Obama administration's proposed budget for fiscal year (FY) 2011. The FY 2011 budget request would provide USGS with $1.13 billion, an increase of $21.6 million, or 1.9%, above the FY 2010 enacted level. “In a time of budget austerity, to have the budget for a science agency like the USGS actually be at a level above 2010—and 2010 was a pretty good budget year for the USGS—is indeed a very good sign,” USGS director Marcia McNutt said at a 1 February budget briefing. “What we are seeing in the USGS budget is the reflection from both the president and the secretary [of the Department of the Interior, of which USGS is part] of their commitment that the problems that the nation is facing right now are problems to which science can help us find an answer,” she said.

  16. 76 FR 71937 - Proposed Information Collection; Comment Request; Direct Investment Surveys: BE-605, Quarterly...

    Science.gov (United States)

    2011-11-21

    ...: BE-605, Quarterly Survey of Foreign Direct Investment in the United States--Transactions of U.S...@bea.gov . SUPPLEMENTARY INFORMATION: I. Abstract The Quarterly Survey of Foreign Direct Investment in... in the BE- 12, Benchmark Survey of Foreign Direct Investment in the United States, which is...

  17. 75 FR 51853 - Notice of Proposed Information Collection Requests: Public Libraries Survey, FY 2011-2013

    Science.gov (United States)

    2010-08-23

    ... Information Collection Requests: Public Libraries Survey, FY 2011-2013 AGENCY: Institute of Museum and Library... purpose of this Notice is to solicit comments concerning the continuance of the Public Libraries Survey.... 9108). II. Current Actions Pursuant to Public Law 107-279, this Public Libraries Survey collects annual...

  18. 78 FR 65661 - Agency Information Collection Activities; Proposed Collection; Comment Request; Food Safety Survey

    Science.gov (United States)

    2013-11-01

    ... Collection; Comment Request; Food Safety Survey AGENCY: Food and Drug Administration, HHS. ACTION: Notice... information technology. Food Safety Survey--(OMB Control Number 0910-0345)--Reinstatement I. Background Under... the safety of the nation's food supply. The Food Safety Survey measures consumers' knowledge...

  19. User Needs in Green ITS: Results of a Questionnaire Survey and Proposal for Green ITS Design

    NARCIS (Netherlands)

    Man, W.Y.; Bie, J.; Van Arem, B.

    2012-01-01

    An internet survey has been conducted among drivers in the Netherlands and Japan to study their attitude towards Green ITS. The survey focuses on driving behavior and ITS experience, attitude towards environment, and Green ITS preferences. The results show that money-related information gives the mo

  20. 78 FR 28619 - Proposed Information Collection; Fish and Wildlife Service Conservation Banking Survey

    Science.gov (United States)

    2013-05-15

    ... Banking Survey AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice; request for comments. SUMMARY... impediments to the habitat conservation banking program, and develop possible options for encouraging expanded... and purchasers of conservation banking credits. The surveys will benefit the Service by helping to...

  1. 76 FR 3610 - Proposed Information Collection; Comment Request; Annual Survey of State and Local Government...

    Science.gov (United States)

    2011-01-20

    ..., Chief, Local Government Finance and Statistics Branch, Governments Division, U.S. Bureau of the Census... conduct the 2011 and 2013 Annual Survey of State and Local Government Finances and the 2012 Census of Governments: Finance. The Annual Survey of State and Local Government Finance collects data on...

  2. 77 FR 30045 - 30-Day Notice of Proposed Information Collection: English Language Evaluation Surveys

    Science.gov (United States)

    2012-05-21

    ... their goals. Title of Information Collection: English Language Evaluation: Fulbright English Teaching... Information Collection: English Language Evaluation Surveys ACTION: Notice of request for public comment and... English Language Evaluation, to conduct surveys of participants in the ETA Program, E-Teacher...

  3. 75 FR 26759 - Agency Information Collection Activities; Proposed Collection; Comment Request; National Survey...

    Science.gov (United States)

    2010-05-12

    ...; Comment Request; National Survey of Older Americans Act Title III Service Recipients AGENCY... collection requirements contained in consumer assessment surveys that are used by AoA to measure program performance for programs funded under Title III of the Older Americans Act. DATES: Submit written...

  4. 78 FR 74145 - Agency Information Collection Activities; Proposed Collection; Comment Request; National Survey...

    Science.gov (United States)

    2013-12-10

    ... Collection; Comment Request; National Survey of Older Americans Act Participants AGENCY: Administration for... information collection requirements contained in consumer assessment surveys that are used by ACL to measure program performance for programs funded under Title III of the Older Americans Act. DATES: Submit...

  5. 77 FR 19610 - Proposed Information Collection; Comment Request; Advance Monthly Retail Trade Survey

    Science.gov (United States)

    2012-04-02

    ... Retail Trade Survey AGENCY: U.S. Census Bureau, Department of Commerce. ACTION: Notice. SUMMARY: The... INFORMATION: I. Abstract The Advance Monthly Retail Trade Survey (MARTS) provides an early indication of monthly sales for firms located in the United States and classified in the Retail Trade or Food...

  6. 76 FR 16611 - Proposed Information Collection; Comment Request; Socio-Economic Surveys of Vessel Owners, Permit...

    Science.gov (United States)

    2011-03-24

    ... for these measures are already routinely collected by NMFS. This survey will fill in the gaps, and... information on crew, wage calculation systems, individual and community well-being, fishing practices,...

  7. Proposed South San Diego Bay National Wildlife Refuge: Level III preaquisition survey

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — A Level III Contaminant Preaquisition Survey was conducted during 1992 in the south San Diego Bay area to evaluate potential hazards to trustee resources and/or...

  8. 75 FR 69681 - Proposed Collection; Comment Request; California Health Interview Survey Cancer Control Module...

    Science.gov (United States)

    2010-11-15

    ... survey is funded by a number of public and private sources. It was first administered in 2001 to 55,428... households. CHIS 2011 is planned for continual administration to 48,150 adults and 3,316...

  9. 76 FR 67405 - Proposed Information Collection; Comment Request; Federal Statistical System Public Opinion Survey

    Science.gov (United States)

    2011-11-01

    ..., Room 6616, 14th and Constitution Avenue, NW., Washington, DC 20230 (or via the Internet at dHynek@doc... household. The survey conducts Spanish-language interviews for respondents who speak only Spanish....

  10. Survey of NoC and Programming Models Proposals for MPSoC

    Directory of Open Access Journals (Sweden)

    Eduard Fernandez-Alonso

    2012-03-01

    Full Text Available The aim of this paper is to give briefing of the concept of network-on-chip and programming model topics on multiprocessors system-on-chip world, an attractive and relatively new field for academia. Numerous proposals from academia and industry are selected to highlight the evolution of the implementation approaches both on NoC proposals and on programming models proposals.

  11. The Galactic Exoplanet Survey Telescope A Proposed Space-Based Microlensing Survey for Terrestrial Extra-Solar Planets

    CERN Document Server

    Bennett, D P; Bennett, David P.; Rhie, Sun Hong

    2000-01-01

    We present a conceptual design for a space based Galactic Exoplanet SurveyTelescope (GEST) which will use the gravitational microlensing technique todetect extra solar planets with masses as low as that of Mars at allseparations >~ 1 AU. The microlensing data would be collected by a diffractionlimited, wide field imaging telescope of ~ 1.5m aperture equipped with a largearray of red-optimized CCD detectors. Such a system would be able to monitor$\\sim 2\\times 10^8$ stars in $\\sim 6$ square degrees of the Galactic bulge atintervals of 20-30 minutes, and it would observe $\\sim 12000$ microlensingevents in three bulge seasons. If planetary systems like our own are common,GEST should be able to detect $\\sim 5000$ planets over a 2.5 year lifetime. Ifgas giants like Jupiter and Saturn are rare, then GEST would detect $\\sim 1300$planets in a 2.5 year mission if we assume that most planetary systems aredominated by planets of about Neptune's' mass. Such a mission would alsodiscover $\\sim 100$ planets of an Earth mass ...

  12. 78 FR 30939 - Notice of Proposed Information Collection Requests: State Library Administrative Agencies Survey...

    Science.gov (United States)

    2013-05-23

    ... Administrative Agencies Survey, FY 2014 AGENCY: Institute of Museum and Library Services, The National Foundation... Notice is to solicit comments concerning the continuance of the State Library Administrative Agencies.... Swan, Senior Statistician, Office of Planning, Research, and Evaluation, Institute of Museum...

  13. 78 FR 50373 - Proposed Information Collection; Comment Request; Annual Capital Expenditures Survey

    Science.gov (United States)

    2013-08-19

    ... designated time. Employer companies were mailed one of three forms based on their diversity of operations and... instrument and would be based on their diversity of operations and number of industries with payroll... both companies with employees and nonemployer companies to respond to the survey within 30 days...

  14. 76 FR 43264 - Proposed Information Collection; Comment Request; NIST MEP Client Impact Survey

    Science.gov (United States)

    2011-07-20

    ..., profitability, and enhance their economic competitiveness. The information collected will provide the MEP with..., 292, and H.R. 1274--section 2). The information collected will include MEP customer inputs regarding their sales, costs, investments, ] employment, and exports. Customers will only be surveyed...

  15. 77 FR 6065 - Proposed Information Collection; Comment Request; Cook Inlet Beluga Whale Economic Survey

    Science.gov (United States)

    2012-02-07

    ....) waters. It was listed as endangered under the Endangered Species Act on October 22, 2008 (73 FR 62919... Inlet Beluga Whale Economic Survey AGENCY: National Oceanic and Atmospheric Administration (NOAA....Lew@noaa.gov . SUPPLEMENTARY INFORMATION: I. Abstract The population of Cook Inlet beluga whales...

  16. 77 FR 58510 - Proposed Information Collection; Comment Request; Current Population Survey (CPS), Annual Social...

    Science.gov (United States)

    2012-09-21

    ... Survey (CPS), Annual Social and Economic Supplement (ASEC) AGENCY: U.S. Census Bureau, Commerce. ACTION... Annual Social and Economic Supplement (ASEC) to be conducted in conjunction with the February, March, and... casual attachment to the labor market. The income data from the ASEC are used by social...

  17. 78 FR 76315 - Proposed Information Collection; Survey of Rancher Knowledge and Attitudes About Jaguar Habitat...

    Science.gov (United States)

    2013-12-17

    ... About Jaguar Habitat Conservation in Southern Arizona AGENCY: Fish and Wildlife Service, Interior... to determine their knowledge of and attitudes toward jaguar habitat, the level of knowledge regarding... intended to benefit jaguar habitat. This survey is necessary because there is currently no statistically...

  18. 76 FR 2700 - Notice of Submission of Proposed Information Collection to OMB; American Housing Survey

    Science.gov (United States)

    2011-01-14

    ... and composition of the country's housing inventory. Title 12, United States Code, Sections 1701Z-1... 2011 AHS will collect additional data on potential health and safety hazards in the home and... Survey (AHS) provides a periodic measure of the size and composition of the country's housing...

  19. 78 FR 47671 - Proposed Information Collection; Comment Request; Benchmark Survey of Insurance Transactions by U...

    Science.gov (United States)

    2013-08-06

    ... Mark Xu, Chief, Special Surveys Branch, Balance of Payments Division, (BE-50), Bureau of Economic... insurance companies resident abroad; (7) receipts for auxiliary insurance services; and (8) payments for... their insurance transactions for each category. The data are needed to monitor U.S. international trade...

  20. 77 FR 27021 - Proposed Information Collection; Comment Request; Quarterly Survey of Financial Services...

    Science.gov (United States)

    2012-05-08

    ... Financial Services Transactions Between U.S. Financial Services Providers and Foreign Persons AGENCY: Bureau... INFORMATION: I. Abstract Form BE-185, Quarterly Survey of Financial Services Transactions between U.S. Financial Services Providers and Foreign Persons, obtains quarterly data from U.S. financial...

  1. 78 FR 76285 - Proposed Information Collection; Comment Request; Panel Member Survey To Develop Indicators of...

    Science.gov (United States)

    2013-12-17

    ... shape the tourism industry's ability to adapt to or bounce back from external shocks such as natural... resiliency and/ or the tourism industry in two geographic areas: (1) The Central North Carolina Coast, and (2... Member Survey To Develop Indicators of Resilient Coastal Tourism AGENCY: National Oceanic and Atmospheric...

  2. Proposing a survey instrument for measuring operational, formal, information and strategic Internet skills

    NARCIS (Netherlands)

    Deursen, van A.J.A.M.; Dijk, van J.A.G.M.; Peters, O.

    2012-01-01

    Observational studies prove to be very suitable to provide a realistic view of people's Internet skills. However, their cost and time are a strong limitation for large-scale data gathering. A useful addition to the measurement of Internet skills would be the development of survey questions for measu

  3. 78 FR 39282 - Proposed Information Collection Request; Comment Request; Willingness to Pay Survey for Salmon...

    Science.gov (United States)

    2013-07-01

    ...'' option. A few additional questions to further understand respondent choice motivations, their river... people total respond to the survey, the burden is 375 hours. Total estimated cost: The Bureau of Labor Statistics reports average wage rates for Oregon for all occupations (Bureau of Labor Statistics, 2011). The...

  4. 75 FR 51751 - Proposed Information Collection; Comment Request; User Engagement Survey for Water Resources...

    Science.gov (United States)

    2010-08-23

    ... Information Collection; Comment Request; User Engagement Survey for Water Resources Forecasts and Climate Information AGENCY: National Oceanic and Atmospheric Administration (NOAA). ACTION: Notice. SUMMARY: The... workshops related to water resources and/or climate. This information collection will be conducted by...

  5. 77 FR 50677 - Proposed Information Collection; Comment Request; Boundary and Annexation Survey

    Science.gov (United States)

    2012-08-22

    ... every survey. In the years ending in 8, 9 and 0, the BAS includes all governmentally active counties and... Address File/ Topologically Integrated Geographic Encoding and Referencing System (MAF/TIGER), the Census... Census Bureau's MAF/TIGER Database. Participation in the pilot project is voluntary and the Census Bureau...

  6. 78 FR 76894 - Proposed Collection; Comment Request for the IRS Taxpayer Burden Surveys

    Science.gov (United States)

    2013-12-19

    ... year, individual taxpayers in the United States submit more than 140 million tax returns to the... expenses that taxpayers spend in order to comply with tax laws and regulations. The IRS has conducted prior surveys of individual taxpayers pre- filing and filing burden in 1984, 1999, 2000, 2007, 2010, 2011,...

  7. Arizona Likely Voter Survey on Proposed Legislation to Enhance School Choice

    Science.gov (United States)

    Kenski, Margaret C.

    2005-01-01

    This report contains the results of a telephone survey of 602 likely Arizona voters on various measures to enhance school choice in Arizona. This research was conducted by Arizona Opinion of Tucson for The Milton and Rose D. Friedman Foundation of Indianapolis. All fieldwork was conducted on March 23-26, and 28-29, 2005 by DataCall Inc. of…

  8. 77 FR 39733 - Proposed Information Collection; Comment Request: Appalachian Trail Management Partner Survey

    Science.gov (United States)

    2012-07-05

    ... receiving support from the Appalachian Trail Park Office (ATPO) to protect trail resources and provide for the public enjoyment and visitor experience of the Appalachian National Scenic Trail (Trail). To... Information Collection; Comment Request: Appalachian Trail Management Partner Survey AGENCY: National...

  9. 78 FR 4458 - Proposed Information Collection Request Submitted for Public Comment; Survey Regarding Pension...

    Science.gov (United States)

    2013-01-22

    ...; Survey Regarding Pension Benefit Statements AGENCY: Employee Benefits Security Administration, Department... pension benefit statements. Type of Review: New collection of information. OMB Number: 1210-NEW... pursuant to section 105(a) of the Employee Retirement Income Security Act of 1974 as amended by the Pension...

  10. 75 FR 69134 - Submission for OMB Review, Comment Request, Proposed Collection: Public Libraries Survey, FY 2011...

    Science.gov (United States)

    2010-11-10

    .... 9108). Abstract: The Public Libraries Survey has been conducted by the Institute of Museum and Library... descriptive data on the universe of public libraries in the U.S. and the Outlying Areas. Information such as public service hours per year, circulation of library books, etc., number of librarians, population of...

  11. 78 FR 37243 - Notice of Proposed Information Collection Requests: Public Libraries Survey, FY 2014-2016

    Science.gov (United States)

    2013-06-20

    .... Swan, Senior Statistician, Office of Planning, Research, and Evaluation, Institute of Museum and... Libraries Survey collects annual descriptive data on the universe of public libraries in the U.S. and the..., Research, and Evaluation, Institute of Museum and Library Services, 1800 M Street NW., 9th Floor...

  12. 77 FR 66863 - Notice of Submission of Proposed Information Collection to OMB Electronic Stakeholder Survey...

    Science.gov (United States)

    2012-11-07

    ... benefits from increased access to and synthesis of information regarding successes and failures in domestic... synthesis of information regarding successes and failures in domestic and global housing and urban... Survey--Office for International and Philanthropic Innovation AGENCY: Office of the Chief...

  13. Covering young adults under the Affordable Care Act: the importance of outreach and Medicaid expansion: findings from the Commonwealth Fund Health Insurance Tracking Survey of Young Adults, 2013.

    Science.gov (United States)

    Collins, Sara R; Rasmussen, Petra W; Garber, Tracy; Doty, Michelle M

    2013-08-01

    There is concern that many young adults (ages 19--29) will remain without health insurance in 2014 despite the Affordable Care Act's reforms, including subsidized private coverage offered in new state marketplaces and expanded Medicaid eligibility. How things turn out will likely depend on outreach efforts and states' decisions on expanding Medicaid. Commonwealth Fund Health Insurance Tracking Survey data from 2011 and 2013 show increasing awareness among young adults of the 2010 requirement that health plans cover children under age 26. Of the estimated 15 million young adults enrolled in a parent's plan in the prior 12 months, 7.8 million would not likely have been eligible to enroll prior to the law. Still, only 27 percent of 19-to-29-year-olds are aware of the marketplaces. Meanwhile, most uninsured young adults living below poverty will not have access to subsidized public or private insurance in states opting out of the Medicaid expansion.

  14. 76 FR 58243 - Proposed Information Collection; Comment Request; Survey of International Air Travelers

    Science.gov (United States)

    2011-09-20

    ..., travel associations, destinations, lodging); Consultants; Financial Firms; Educational Institutions; and... Travelers AGENCY: International Trade Administration, Commerce. ACTION: Notice. SUMMARY: The Department of... public and other Federal agencies to take this opportunity to comment on proposed and/or...

  15. 78 FR 2278 - Notice of Proposed Information Collection for Public Comment: 2013 American Housing Survey

    Science.gov (United States)

    2013-01-10

    ... conditions and the suitability of public policy initiatives. Academic researchers and private organizations... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF HOUSING AND URBAN DEVELOPMENT Notice of Proposed Information Collection for Public Comment: 2013 American...

  16. Integrated Cognition - A Proposed Definition of Ingredients, A Survey of Systems, and Example Architecture

    Science.gov (United States)

    2004-10-01

    that does not mean that such a system needs to begin as a “ tabula rasa ,” free of learning processes and knowledge. Rather, initial learning...emergent behavior and have performed well in many roles . It has been developed by H. Van Parunak and Sven Brueck- ner of Altarum. Survey Conclusions... role in planning and prediction, where the causal consequences of actions and events are in- ferred. It is also central to diagnostic reasoning, where

  17. 77 FR 75257 - Proposed Collection of Information: Medium- and Heavy-Duty Truck Fleet Survey

    Science.gov (United States)

    2012-12-19

    ... National Highway Traffic Safety Administration Proposed Collection of Information: Medium- and Heavy-Duty... medium- and heavy-duty truck fleet managers. DATES: Comments must be received within 60 days of... Information Collection: New collection. OMB Control Number: To be issued at time of approval. Title: Medium...

  18. 76 FR 67459 - Agency Information Collection Activities; Proposed Collection; Comment Request; Survey of “Health...

    Science.gov (United States)

    2011-11-01

    ... number found in brackets in the heading of this document. FOR FURTHER INFORMATION CONTACT: Daniel..., Rockville, MD 20850, (301) 796-5156, Daniel.Gittleson@fda.hhs.gov . SUPPLEMENTARY INFORMATION: Under the PRA... drug labeling, we propose to ask health care providers (HCPs) to evaluate the quality of labeling...

  19. 77 FR 24684 - Proposed Information Collection; Comment Request; 2013-2015 American Community Survey Methods...

    Science.gov (United States)

    2012-04-25

    ... place to propose several tests: A 2013 Questionnaire Design Test, a 2015 ACS Content Test, and a series... alternative questionnaire design to accommodate additional content on the ACS mail questionnaire. In the 2013 ACS Questionnaire Design Test, we will study the impact of a longer (36-page) questionnaire...

  20. The Common Topoi of STEM Discourse: An Apologia and Methodological Proposal, with Pilot Survey

    Science.gov (United States)

    Walsh, Lynda

    2010-01-01

    In this article, the author proposes a methodology for the rhetorical analysis of scientific, technical, mathematical, and engineering (STEM) discourse based on the common topics (topoi) of this discourse. Beginning with work by Miller, Prelli, and other rhetoricians of STEM discourse--but factoring in related studies in cognitive linguistics--she…

  1. 77 FR 57074 - Proposed Information Collection; Comment Request; Social Capital Survey of Northeast Groundfish...

    Science.gov (United States)

    2012-09-17

    ... relationships is commonly referred to in social and economic literature as social capital. A baseline of existing social capital in the groundfish fishery in the Northeast Region was conducted in 2010 by the Gulf... National Oceanic and Atmospheric Administration Proposed Information Collection; Comment Request;...

  2. 75 FR 4042 - Proposed Information Collection; Comment Request; Survey of Public Perceptions and Attitudes...

    Science.gov (United States)

    2010-01-26

    ... of commercial water sports tours, and hotel managers operating in areas of high monk seal activity... hours and cost) of the ] proposed collection of information; (c) ways to enhance the quality, utility... forms of information technology. Comments submitted in response to this notice will be summarized and/or...

  3. 77 FR 76053 - Proposed Collection; Comment Request; Pediatric Palliative Care Campaign Pilot Survey

    Science.gov (United States)

    2012-12-26

    ..., the National Institute of Nursing Research (NINR), the National Institutes of Health (NIH) will... (OMB) for review and approval. Written comments and/or suggestions from the public and affected... writing, or request more information on the proposed project, contact Ms. Adrienne Burroughs,...

  4. Expansion of discharge planning system in Japan: Comparison of results of a nationwide survey between 2001 and 2010

    Directory of Open Access Journals (Sweden)

    Nagata Satoko

    2012-08-01

    Full Text Available Abstract Background In response to the rapid aging of the population in Japan, many care systems have been created in quick succession. Establishment of discharge planning departments (DPDs in hospitals is one of them. In this study, we compared the distribution and characteristics of DPDs and the characteristics of the hospitals that have DPDs between 2001 and 2010 in Japan. Methods We mailed a questionnaire about the characteristics of hospitals and existence and situation of DPDs to all general hospitals with 100 or more general beds in 2001 and in 2010. Results In 2001, of the 3,268 hospitals queried, 1,568 (48.0% responded and 1,357 (41.5% were selected for data analysis. In 2010, among 2,600 hospitals, 940 hospitals (36.1% responded and 913 (35.1% met the inclusion criteria. The percentage of hospitals with DPDs increased from 30% to more than 70% between the two surveys. More departments were under the direct control of the hospital director and more physicians participated in discharge planning activities in 2010 than in 2001. In 2001, private hospitals and hospitals with an affiliated institution or agency tended to have a DPD; however, the relationship between these factors and the presence of a DPD had disappeared in 2010. Larger hospitals and hospitals with more nurses per patient tended to have a DPD both in 2001 and 2010. Conclusions Since 2008, the establishment of a DPD has been directly connected to medical fees so hospital administrators might have recognized the DPD as a “necessary and paid for” department. Having a DPD was the majority’s policy in Japan, and we must recognize the importance of quality assurance through DPDs from now on, especially in small hospitals.

  5. Ecological surveys of the proposed high explosives wastewater treatment facility region

    Energy Technology Data Exchange (ETDEWEB)

    Haarmann, T.

    1995-07-01

    Los Alamos National Laboratory (LANL) proposes to improve its treatment of wastewater from high explosives (HE) research and development activities. The proposed project would focus on a concerted waste minimization effort to greatly reduce the amount of wastewater needing treatment. The result would be a 99% decrease in the HE wastewater volume, from the current level of 6,760,000 L/mo (1,786,000 gal./mo) to 41,200 L/mo (11,000 gal./mo). This reduction would entail closure of HE wastewater outfalls, affecting some wetland areas that depend on HE wastewater effluents. The outfalls also provide drinking water for many wildlife species. Terminating the flow of effluents at outfalls would represent an improvement in water quality in the LANL region but locally could have a negative effect on some wetlands and wildlife species. None of the affected species are protected by any state or federal endangered species laws. The purpose of this report is to briefly discuss the different biological studies that have been done in the region of the project area. This report is written to give biological information and baseline data and the biota of the project area.

  6. Volcanic glass signatures in spectroscopic survey of newly proposed lunar pyroclastic deposits

    Science.gov (United States)

    Besse, S.; Sunshine, J.M.; Gaddis, L.R.

    2014-01-01

    Moon Mineralogy Mapper spectroscopic observations are used to assess the mineralogy of five sites that have recently been proposed to include lunar dark mantle deposits (DMDs). Volcanic glasses have, for the first time, clearly been identified at the location of three of the proposed pyroclastic deposits. This is the first time that volcanic glasses have been identified at such a small scale on the lunar surface from remote sensing observations. Deposits at Birt E, Schluter, and Walther A appear to be glassy DMDs. Deposits at Birt E and Schluter show (1) morphological evidence suggesting a likely vent and (2) mineralogical evidence indicative of the presence of volcanic glasses. The Walther A deposits, although they show no morphological evidence of vents, have the spectroscopic characteristics diagnostic of volcanic glasses. The deposits of the Freundlich-Sharonov basin are separated in two areas: (1) the Buys-Ballot deposits lack mineralogical and morphological evidence and thus are found to be associated with mare volcanism not with DMDs and (2) the Anderson crater deposits, which do not exhibit glassy DMD signatures, but they appear to be associated with possible vent structures and so may be classifiable as DMDs. Finally, dark deposits near the crater Kopff are found to be associated with likely mare volcanism and not associated with DMDs. The spectral identification of volcanic glass seen in many of the potential DMDs is a strong indicator of their pyroclastic origin.

  7. Proposed searches for candidate sources of gravitational waves in a nearby core-collapse supernova survey

    CERN Document Server

    Heo, Jeon-Eun; Lee, Dae-Sub; Kong, In-Taek; Lee, Sang-Hoon; van Putten, Maurice H P M; Della Valle, Massimo

    2015-01-01

    Gravitational wave bursts in the formation of neutron stars and black holes in energetic core-collapse supernovae (CC-SNe) are of potential interest to LIGO-Virgo and KAGRA. Events nearby are readily discovered using moderately sized telescopes. CC-SNe are competitive with mergers of neutron stars and black holes, if the fraction producing an energetic output in gravitational waves exceeds about 1\\%. This opportunity motivates the design of a novel Sejong University Core-CollapsE Supernova Survey (SUCCESS), to provide triggers for follow-up searches for gravitational waves. It is based on the 76 cm Sejong University Telescope (SUT) for weekly monitoring of nearby star-forming galaxies, i.e., M51, M81-M82 and Blue Dwarf Galaxies from the Unified Nearby Galaxy Catalog with an expected yield of a few hundred per year. Optical light curves will be resolved for the true time-of-onset for probes of gravitational waves by broadband time-sliced matched filtering.

  8. Sieve in expansion

    CERN Document Server

    Kowalski, Emmanuel

    2010-01-01

    This is a survey report for the Bourbaki Seminar (Exp. no. 1028, November 2010) concerning sieve and expanders, in particular the recent works of Bourgain, Gamburd and Sarnak introducing "sieve in orbits", and the related developments concerning expansion properties of Cayley graphs of finite linear groups.

  9. SRAM-Based FPGA Systems for Safety-Critical Applications:A Survey on Design Standards and Proposed Methodologies

    Institute of Scientific and Technical Information of China (English)

    Cinzia Bernardeschi; Luca Cassano; Andrea Domenici

    2015-01-01

    As the ASIC design cost becomes affordable only for very large-scale productions, the FPGA technology is currently becoming the leading technology for those applications that require a small-scale production. FPGAs can be considered as a technology crossing between hardware and software. Only a small-number of standards for the design of safety-critical systems give guidelines and recommendations that take the peculiarities of the FPGA technology into consideration. The main contribution of this paper is an overview of the existing design standards that regulate the design and verification of FPGA-based systems in safety-critical application fields. Moreover, the paper proposes a survey of significant published research proposals and existing industrial guidelines about the topic, and collects and reports about some lessons learned from industrial and research pro jects involving the use of FPGA devices.

  10. Periconceptional bread intakes indicate New Zealand's proposed mandatory folic acid fortification program may be outdated: results from a postpartum survey

    Science.gov (United States)

    2012-01-01

    Background In September 2009, a folic acid fortification mandate (135 μg/100 g bread) was to be implemented in New Zealand. However, due to political and manufacturer objection, fortification was deferred until May 2012. Based on estimates of bread consumption derived from a 1997 nationally representative survey, this program was intended to deliver a mean additional intake of 140 μg folic acid/d to women of childbearing age. Little is known about current bread consumption patterns in this target group. The aim of this study was to assess bread consumption among women prior to and during pregnancy with the intent to estimate periconceptional folic acid intakes that would be derived from bread if mandatory fortification were implemented as currently proposed. Methods A retrospective survey of 723 postpartum women in hospitals and birthing centres across New Zealand was conducted using a self-administered questionnaire on bread intake prior to and during pregnancy and maternal socio-demographic and obstetric characteristics. Results Median bread intake before conception (2 slices/d) was below that of previous data upon which the current fortification proposal was modeled (3-4 slices/d). If mandatory fortification is implemented as proposed, only 31% (95% CI = 24%-37%) of childbearing-age women would attain an additional folic acid intake of ≥ 140 μg/d, with a mean of 119 μg/d (95% CI = 107 μg/d-130 μg/d). Based on these data, a fortification level of 160 μg/100 g bread is required to achieve the targeted mean of 140 μg folic acid/d. Nonetheless, under the current proposal additional folic acid intakes would be greatest among the least advantaged segments of the target population: Pacific and indigenous Māori ethnic groups; those with increased parity, lower income and education; younger and single mothers; and women with unplanned pregnancies. Subgroups predicted to derive less than adequate folic acid intakes from the proposed policy were women of Asian

  11. Periconceptional bread intakes indicate New Zealand's proposed mandatory folic acid fortification program may be outdated: results from a postpartum survey

    Directory of Open Access Journals (Sweden)

    Mallard Simonette R

    2012-02-01

    Full Text Available Abstract Background In September 2009, a folic acid fortification mandate (135 μg/100 g bread was to be implemented in New Zealand. However, due to political and manufacturer objection, fortification was deferred until May 2012. Based on estimates of bread consumption derived from a 1997 nationally representative survey, this program was intended to deliver a mean additional intake of 140 μg folic acid/d to women of childbearing age. Little is known about current bread consumption patterns in this target group. The aim of this study was to assess bread consumption among women prior to and during pregnancy with the intent to estimate periconceptional folic acid intakes that would be derived from bread if mandatory fortification were implemented as currently proposed. Methods A retrospective survey of 723 postpartum women in hospitals and birthing centres across New Zealand was conducted using a self-administered questionnaire on bread intake prior to and during pregnancy and maternal socio-demographic and obstetric characteristics. Results Median bread intake before conception (2 slices/d was below that of previous data upon which the current fortification proposal was modeled (3-4 slices/d. If mandatory fortification is implemented as proposed, only 31% (95% CI = 24%-37% of childbearing-age women would attain an additional folic acid intake of ≥ 140 μg/d, with a mean of 119 μg/d (95% CI = 107 μg/d-130 μg/d. Based on these data, a fortification level of 160 μg/100 g bread is required to achieve the targeted mean of 140 μg folic acid/d. Nonetheless, under the current proposal additional folic acid intakes would be greatest among the least advantaged segments of the target population: Pacific and indigenous Māori ethnic groups; those with increased parity, lower income and education; younger and single mothers; and women with unplanned pregnancies. Subgroups predicted to derive less than adequate folic acid intakes from the proposed

  12. Citizens' views about the proposed Hartsville Nuclear Power Plant: a survey of residents' perceptions in August 1975

    Energy Technology Data Exchange (ETDEWEB)

    Sundstrom, E. D.; Costomiris, L. J.; DeVault, R. C.; Dowell, D. A.; Lounsbury, J. W.; Mattingly, Jr., T. J.; Passino, E. M.; Peelle, E.

    1977-05-01

    This report describes the results of a survey conducted in August 1975 among a group of residents of Hartsville and Trousdale County, Tennessee, regarding their views about the nuclear power plant the Tennessee Valley Authority is constructing five miles outside of Hartsville. As part of a longitudinal study of the social impacts of the nuclear facility, the survey was conducted during the planning and pre-licensing phase of the project to address two questions: (1) What factors are related to favorable or unfavorable attitudes toward the nuclear plant. (2) How do residents of Hartsville perceive their quality of life, and how have their perceptions changed since an earlier survey in January 1975. A panel of 288 residents interviewed in January 1975 was reinterviewed in August 1975. Questions concerned perceptions of the quality of life in Hartsville, knowledge and sources of information about the proposed nuclear plant, expectations regarding its effects on the community, and attitudes toward the plant and related issues. Responses are presented.

  13. Intensive archaeological survey of the proposed Central Sanitary Wastewater Treatment Facility, Savannah River Site, Aiken and Barnwell Counties, South Carolina

    Energy Technology Data Exchange (ETDEWEB)

    Stephenson, D.K.; Sassaman, K.E.

    1993-11-01

    The project area for the proposed Central Sanitary Wastewater Treatment Facility on the Savannah River Site includes a six-acre tract along Fourmile Branch and 18 mi of trunk line corridors. Archaeological investigations of the six-acre parcel resulted in the discovery of one small prehistoric site designated 38AK465. This cultural resource does not have the potential to add significantly to archaeological knowledge of human occupation in the region. The Savannah River Archaeological Research Program (SRARP) therefore recommends that 38AK465 is not eligible for nomination to the National Register of Historic Places (NRHP) and further recommends a determination of no effect. Archaeological survey along the trunk line corridors implicated previously recorded sites 38AK92, 38AK145, 38AK415, 38AK417, 38AK419, and 38AK436. Past disturbance from construction had severely disturbed 38AK92 and no archaeological evidence of 38AK145, 38AK419, and 38AK436 was recovered during survey. Lacking further evidence for the existence of these sites, the SRARP recommends that 38AK92, 38AK145, 38AK419, and 38AK436 are not eligible for nomination to the NRHP and thus warrant a determination of no effect. Two of these sites, 38Ak415 and 38AK417, required further investigation to evaluate their archaeological significance. Both of the sites have the potential to yield significant data on the prehistoric period occupation of the Aiken Plateau and the SRARP recommends that they are eligible for nomination to the NRHP. The Savannah River Archaeological Research Program recommends that adverse effects to sites 38AK415 and 38AK417 from proposed construction can be mitigated through avoidance.

  14. Problems and Proposals of Their Solutions in Dermatology Residency Training: A Survey of Residents’ Opinions in Turkey

    Directory of Open Access Journals (Sweden)

    Sadık Yılmaz

    2009-03-01

    Full Text Available Background and Design: There are many problems in dermatology residency training. The purpose of this study was to describe dermatology residents’ opinions about problems and proposals of their solutions of dermatology residency training programs in Turkey. In addition, by means of these estimations to propose efficient and standard curriculum components are aimed. Material and Method: A descriptive pilot study was designed and a questionnaire was prepared to describe the problems and suggestions for the solution in dermatology residency education. The survey was conducted between 20 June 2006 and 09 August 2006. The questions were prepared in accordance with a 1 to 5 Likert-type scale to evaluate the level of importance and sufficiency of the residents’ opinions. Results: Sixty seven (52 female, 15 male residents responded to the survey. Based on the importance evaluation, although clinical-pathological meetings were the most important educational component, all other educational components were also indicated as important. Based on the sufficiency evaluation, the least sufficient educational components were photodermatology/laser therapy training (score, 1,82 of 5,0 and cosmetic dermatology (1,83. Sufficiency levels of educational components such as textbook review, translation and discussion (3,86 journal club (4,04, preparation of seminar (4,03 and allergy training (2,95 were evaluated as sufficient. All other educational components were determined as insufficient. Overall, the greatest discrepancies between the importance and sufficiency for all educational components were observed in cosmetic dermatology education (2,50.Conclusion: This is the first study to assess dermatology residency education based on the residents’ perspectives, in Turkey. These results show the necessity for review and revise of some of the elements and the necessity to prepare a standard curriculum of dermatology residency education. It is appropriate to

  15. AUTO-EXPANSIVE FLOW

    Science.gov (United States)

    Physics suggests that the interplay of momentum, continuity, and geometry in outward radial flow must produce density and concomitant pressure reductions. In other words, this flow is intrinsically auto-expansive. It has been proposed that this process is the key to understanding...

  16. Preliminary archaeological survey of proposed gas well locations in Green Township (Scioto County) and Elizabeth Township (Lawrence County) Ohio

    Energy Technology Data Exchange (ETDEWEB)

    Black, D.B.; Peebles, C.S.; Zielinski, R.E.

    1978-10-24

    The present archaeological survey and cultural resource assessment were conducted for the United States Department of Energy, Morgantown Energy Technology Center in areas to be disturbed by gas well drilling and holding pond construction. The project area is the Pine Creek drainage system, which is a tributary of the Ohio River in Scioto and Lawrence Counties, Ohio. The literature search indicated that prehistoric archaeological sites do occur and have been documented in the Pine Creek drainage system. Presently, no archaeological sites have been reported in locations of direct impact. The literature search also indicated that historic features from the early iron industry period, ca. 1840 to 1870, are likely to occur throughout the project area. Field reconnaissance identified three prehistoric archaeological sites and one historic site in and adjacent to the proposed locations of disturbance. Two sites were determined to be of significant research value and may be nominated to the National Register of Historic Places. Consequently, recommendations were made to minimize the adverse effects of the proposed drilling project on these archaeological sites.

  17. Homogenizing Responses to Different Survey Questions on the Same Topic: Proposal of a Scale Homogenization Method Using a Reference Distribution.

    Science.gov (United States)

    de Jonge, Tineke; Veenhoven, Ruut; Arends, Lidia

    2014-01-01

    Survey data are often used for comparison purposes, such as comparisons across nations or comparisons over time. To be effective, this would require equivalent questions and equivalent responses options to the questions. Yet there is a lot of variation in the response scales used, which, for example, differ in the number of response options used and the labeling of these options. This is the case in happiness research, and as a result most of the research data in this field is incomparable. Several methods have been proposed to transform ratings on verbal response scales to a common numerical scale, typically ranging from 0 to 10. In this paper we give an overview of the progress made in those Scale Homogenization methods over time. We describe two early methods: Linear Stretch and the Semantic Judgement of Fixed Word Value Method. Next we discuss the Semantic Judgement of Word Value in Context Method in more detail. Based on these discussions we propose a new Reference Distribution Method. We apply the Semantic Judgement of Word Value in Context and the Reference Distribution Methods to data on happiness in The Netherlands for the years 1989-2009. We show that the Reference Distribution Method produces comparable time series on different questions and that it allows discontinuities in data to be corrected.

  18. Expansive Cements

    Science.gov (United States)

    1970-10-01

    sale: is disributici is unlimited = F’)RIWRD Seior Ignacio Soto, Rrecutive President, Instituto Mexicano del Cementc y Concreto , invited Mr. Bryant... Concreto , a.c., Kwidco, D. F., Mexico. Based on info.mation largely obtained from ACT Committee 223, Expansive ’ement. Concretes, ACI Journal, August 1Q70

  19. Cultural resources survey and assessment of the proposed Department of Energy Freeport to Texas City pipeline, Brazoria and Galveston Counties, Texas. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Castille, G.J.; Whelan, J.P. Jr.

    1986-01-01

    An intensive survey and testing program of selected segments of a proposed Department of Energy pipeline were conducted by Coastal Environments, Inc., Baton Rouge, Louisiana, during December 1985 and January 1986. The proposed pipeline runs from Texas City, Galveston County to Bryan Mound, Brazoria County. The pedestrian survey was preceded by historical records survey to locate possible historic sites within the DOE righ-of-way. Four prehistoric sites within the ROW (41BO159, 160, 161, 162) and one outside the ROW (41BO163) were located. All are Rangia cuneata middens. The survey results are discussed with particular reference to the environmental settings of the sites and the effectiveness of the survey procedure. Two of the sites located within the ROW were subjected to additional testing. The results of the backhoe testing program are included in the site descriptions, and the scientific value of the sites are presented. 52 refs., 20 figs., 10 tabs.

  20. 78 FR 70062 - Proposed Collection; 60-Day Comment Request: Clearance for Surveys of Customers and Partners of...

    Science.gov (United States)

    2013-11-22

    ... surveys will provide customer satisfaction input on various elements of OER's business processes. The approximately 14 (10 quantitative and 4 qualitative) customer satisfaction surveys that will be conducted under.... Estimated Annualized Burden Hours Quantitative Survey Number of Average burden Type of respondent Number of...

  1. Environmental Baseline Survey for Proposed Land Use Permit Modification for Expansion of the Dynamic Explosive Test Site (DETS) 9940 Main Complex Parking Lot.

    Energy Technology Data Exchange (ETDEWEB)

    Peek, Dennis W.

    2016-02-01

    The approach was to perform a document search, supplemented by a visual site inspection, to identify potential environmental contamination associated with the property. Factors evaluated included hazardous substances; petroleum products and derivatives; environmental restoration sites; areas of concern; storage tanks; oil/water separators; grease traps; wash racks; waste tanks; pesticides; military munitions/ordnance; medical or bio-hazardous waste; radioactive waste; solid/municipal waste; indoor air quality; groundwater; wastewater treatment, collection, and disposal/discharge; drinking water quality; utilities; asbestos; polychlorinated biphenyls (PCBs); radon; lead-based paint; cultural resources; floodplains; and natural/biological resources.

  2. Proposed Expansion of Acme Landfill Operations.

    Science.gov (United States)

    1982-08-01

    decays, it produces bacteria that release gases. Methane develops in phases. Initially, during a phase which can last several days to months, a...90 and 95°F. Another factor which affects landfill gas production is pH. Methanogenic bacteria need a pH near 7.0 to produce optimal amounts of...Los Osos-Millsholm-Los Gatos soil association while the other four sites were located in the Altamont-Diablo-Fontana association. A standard slope

  3. Isotropic Negative Thermal Expansion Metamaterials.

    Science.gov (United States)

    Wu, Lingling; Li, Bo; Zhou, Ji

    2016-07-13

    Negative thermal expansion materials are important and desirable in science and engineering applications. However, natural materials with isotropic negative thermal expansion are rare and usually unsatisfied in performance. Here, we propose a novel method to achieve two- and three-dimensional negative thermal expansion metamaterials via antichiral structures. The two-dimensional metamaterial is constructed with unit cells that combine bimaterial strips and antichiral structures, while the three-dimensional metamaterial is fabricated by a multimaterial 3D printing process. Both experimental and simulation results display isotropic negative thermal expansion property of the samples. The effective coefficient of negative thermal expansion of the proposed models is demonstrated to be dependent on the difference between the thermal expansion coefficient of the component materials, as well as on the circular node radius and the ligament length in the antichiral structures. The measured value of the linear negative thermal expansion coefficient of the three-dimensional sample is among the largest achieved in experiments to date. Our findings provide an easy and practical approach to obtaining materials with tunable negative thermal expansion on any scale.

  4. Moving beyond the udorthent - a proposed protocol for surveying urban soils to service data needs for contemporary urban ecosystem management

    Science.gov (United States)

    County-level, Order 2 soil surveys have been used for decades to illustrate the spatial distribution of soils and communicate the utility and limitations of soil series. For the vast majority of these soil surveys, however, there is a distinct lack of resolution of soil series an...

  5. Moving beyond the udorthent - a proposed protocol for surveying urban soils to service data needs for contemporary urban ecosystem management

    Science.gov (United States)

    County-level, Order 2 soil surveys have been used for decades to illustrate the spatial distribution of soils and communicate the utility and limitations of soil series. For the vast majority of these soil surveys, however, there is a distinct lack of resolution of soil series an...

  6. Environmental Assessment of Proposed Upgrades to Military Family Housing, Phase I

    Science.gov (United States)

    2003-03-01

    environmental baseline survey entitled Environmental Baseline Survey Conducted on Kisner Property Part of NE/4, Section 36, T22N, R7W, Enid, Garfield...location relative to the existing MFH units and the acquired Kisner property. As shown in Figure 3-1, none of the proposed MFH expansion area lies...survey entitled Environmental Baseline Survey Conducted on Kisner Property Part of NE/4, Section 36, T22N, R7W, Enid, Garfield County, Oklahoma dated

  7. Preliminary Project Proposal: Proposed Expansion of Dahomey National Wildlife Refuge

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Report contains information and location for the exapansion of Dahomey National Wildlife Refuge to the west of its existing holdings by an additional 12,000 acres...

  8. MODFLOW-2000 model scenarios simulating proposed groundwater pumpage near Monocks Corner, South Carolina: U.S. Geological Survey data release

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — An existing three-dimensional model (MODFLOW-2000) by Petkewich and Campbell was modified to simulate potential changes in groundwater-level conditions caused by...

  9. Experiences and Attitudes of Primary Care Providers Under the First Year of ACA Coverage Expansion: Findings from the Kaiser Family Foundation/Commonwealth Fund 2015 National Survey of Primary Care Providers.

    Science.gov (United States)

    2015-06-01

    A new survey from The Kaiser Family Foundation and The Commonwealth Fund asked primary care providers--physicians, nurse practitioners, and physician assistants--about their views of and experiences with the Affordable Care Act (ACA) and other changes in health care delivery and payment, as well as their thoughts on the future of primary care. In this first brief based on the survey, many providers reported seeing an increased number of patients since the coverage expansions went into effect, but not an accompanying compromise in quality of care. A large majority of primary care providers are satisfied with their medical practice, but a substantial percentage of physicians expressed pessimism about the future of primary care. Similar to the population overall, providers' views of the ACA are divided along party lines. A second brief will report on providers' reactions to other changes occurring in primary care delivery and payment.

  10. 地质调查创新团队建设的若干建议%The proposal of innovation team building of China Geological Survey

    Institute of Scientific and Technical Information of China (English)

    陈元旭; 王蔚; 王楠

    2014-01-01

    Strengthening innovation team construction of geological survey ,can drive the coordinated development of geological survey business ,personnel and conditions for construction ,is the important way to improve the research capability and level of China geological survey teams .This paper analyzes current situations of the geological survey team construction ,describes the purpose and significance of team construction of geological survey innovation ,propose to build innovation teams of geological survey which is according to the principles of Discipline Lead ---Resource Optimization---Key Construction---Overall Drive ,and determine the implementation steps of innovative team building .Finally ,it analyzes the existing problems of innovative team building of geological survey at the present stage ,and proposes the specific measures .%加强地质调查创新团队建设,能够带动地质调查业务、人才队伍和条件建设的协调发展,是提高中国地质调查团队科研能力与水平、增强国际竞争力的重要途径。本文分析了国内地质调查团队建设的现状,介绍了地质调查创新团队建设的目的与意义,提出按照学科引领---资源优化---重点建设---整体带动的原则建设地质调查创新团队,并确定了创新团队建设的实施步骤。最后分析了现阶段建设地质调查创新团队存在的问题,并提出具体措施。

  11. A survey of endangered waterbirds on Maui and Oahu and assessment of potential impacts to waterbirds from the proposed Hawaii Geothermal Project transmission corridor. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Evans, K.; Woodside, D.; Bruegmann, M. [Fish and Wildlife Service, Honolulu, HI (United States). Pacific Islands Office

    1994-08-01

    A survey of endangered waterbirds on Maui and Oahu was conducted during August and September 1993 to identify potential waterbird habitats within the general area of the proposed Hawaii Geothermal Project transmission corridor and to assess the potential impacts to endangered waterbird of installing and operating a high voltage transmission line from the Island of Hawaii to the islands of Oahu and Maui. Annual waterbird survey information and other literature containing information on specific wetland sites were summarized. Literature describing impacts of overhead transmission lines on birds was used to evaluate potential impacts of the proposed project on endangered waterbirds, resident wading birds, and migratory shorebirds and waterfowl. On Oahu, five wetland habitats supporting endangered Hawaiian waterbirds were identified within 2.5 miles of the proposed transmission line corridor. On Maui, three wetland habitats supporting endangered Hawaiian waterbirds were identified within the general area of the proposed transmission line corridor. Several of the wetlands identified on Oahu and Maui also supported resident wading birds and migratory shorebirds and waterfowl. Endangered waterbirds, resident wading birds, and migratory birds may collide with the proposed transmission lines wires. The frequency and numbers of bird collisions is expected to be greater on Oahu than on Maui because more wetland habitat exists and greater numbers of birds occur in the project area on Oahu. In addition, the endangered Hawaiian goose and the endangered Hawaiian petrel may be impacted by the proposed segment of the Hawaii Geothermal Project transmission line on Maui.

  12. Surveys of forest bird populations found in the vicinity of proposed geothermal project subzones in the district of Puna, Hawaii

    Energy Technology Data Exchange (ETDEWEB)

    Jacobi, J.D.; Reynolds, M.; Ritchotte, G.; Nielsen, B.; Viggiano, A.; Dwyer, J.

    1994-10-01

    This report presents data on the distribution and status of forest bird species found within the vicinity of proposed geothermal resource development on the Island of Hawaii. Potential impacts of the proposed development on the native bird populations found in the project are are addressed.

  13. 76 FR 77259 - Proposed Information Collection Request (ICR) for the Voice in the Workplace Survey; Comment Request

    Science.gov (United States)

    2011-12-12

    ... survey will measure each of these items, first individually, and then combine those to come up with an... of research articles, reports, and studies that are relevant to this effort.\\2\\ Through the... defined for this study) literature and may lead to follow-on research articles. \\2\\ Gallup, Inc....

  14. Remote Sensing by Satellite for Environmental Education: A Survey and a Proposal for Teaching at Upper Secondary and University Level.

    Science.gov (United States)

    Bosler, Ulrich

    Knowledge of the environment has grown to such an extent that information technology (IT) is essential to make sense of the available data. An example of this is remote sensing by satellite. In recent years this field has grown in importance and remote sensing is used for a range of uses including the automatic survey of wheat yields in North…

  15. An Anonymous Survey of Psychosomatic Medicine Fellowship Directors regarding Breaches of Contracts and a Proposal for Prevention

    Science.gov (United States)

    Levenson, James L.; Bialer, Philip

    2010-01-01

    Objective: The authors studied how often applicants accept positions at more than one program, or programs offer positions to applicants who have already signed contracts with other programs. Methods: An anonymous survey was distributed to all psychosomatic medicine fellowship program directors. Results: It is fairly common for applicants to sign…

  16. 78 FR 61378 - 60 Day Notice of Proposed Information Collection for Public Comment: Survey of Market Absorption...

    Science.gov (United States)

    2013-10-03

    ... Absorption of New Multifamily Units AGENCY: Office of Policy Development and Research, HUD. ACTION: Notice... Absorption of New Multifamily Units. OMB Control Number: 2528-0013 (Expires 5/31/2014). Form Number: H-31... Survey of Market Absorption (SOMA) provides the data necessary to measure the rate at which new...

  17. 77 FR 61473 - Proposed Collection; Comment Request for Voluntary Customer Surveys To Implement E.O. 12862...

    Science.gov (United States)

    2012-10-09

    ... determine levels of customer satisfaction, as well as determining issues that contribute to customer burden. This information will be used to make quality improvements to products and services. Current Actions: We will be conducting different customer satisfaction and opinion surveys and focus group interviews...

  18. 78 FR 64025 - Submission for OMB Review, Comment Request, Proposed Collection: Public Libraries Survey, 2014-2016

    Science.gov (United States)

    2013-10-25

    ...: Deanne W. Swan, Senior Statistician, Office of Planning, Research, and Evaluation, Institute of Museum.... Pursuant to Public Law 107-279, this Public Libraries Survey collects annual descriptive data on the..., Management Analyst, Office of Policy, Planning, Research, and Communication. BILLING CODE 7036-01-P ...

  19. International survey of methods used in health technology assessment (HTA: does practice meet the principles proposed for good research?

    Directory of Open Access Journals (Sweden)

    Stephens JM

    2012-08-01

    Full Text Available Jennifer M Stephens,1 Bonnie Handke,2 Jalpa A Doshi3 On behalf of the HTA Principles Working Group, part of the International Society for Pharmacoeconomics and Outcomes Research (ISPOR HTA Special Interest Group (SIG1Pharmerit International, Bethesda, MD, USA; 2Medtronic Neuromodulation, Minneapolis, MN, USA; 3Center for Evidence-Based Practice and Center for Health Incentives and Behavioral Economics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USAObjective: To describe research methods used internationally in health technology assessment (HTA and health-care reimbursement policies; compare the survey findings on research methods and processes to published HTA principles; and discuss important issues/trends reported by HTA bodies related to current research methods and applications of the HTA process.Methods: Representatives from HTA bodies worldwide were recruited to complete an online survey consisting of 47 items within four topics: (1 organizational information and process, (2 primary HTA methodologies and importance of attributes, (3 HTA application and dissemination, and (4 quality of HTA, including key issues. Results were presented as a comparison of current HTA practices and research methods to published HTA principles.Results: The survey was completed by 30 respondents representing 16 countries in five major regions, Australia (n = 3, Canada (n = 2, Europe (n = 17, Latin America (n = 2, and the United States (n = 6. The most common methodologies used were systematic review, meta-analysis, and economic modeling. The most common attributes evaluated were effectiveness (more commonly than efficacy, cost-effectiveness, safety, and quality of life. The attributes assessed, relative importance of the attributes, and conformance with HTA principles varied by region/country. Key issues and trends facing HTA bodies included standardizing methods for economic evaluations and grading of evidence, lack of evidence

  20. Subtidal eelgrass/macroalgae surveys for the proposed breakwaters at the US Coast Guard Station at Ediz Hook, Washington, March 1993

    Energy Technology Data Exchange (ETDEWEB)

    Shreffler, D.K. [Battelle/Marine Sciences Lab., Sequim, WA (US)

    1993-05-01

    In 1993, the US Coast Guard proposed to construct two breakwaters and a debris boom to protect its existing pier and moored vessels inside Ediz Hook in Port Angeles Harbor, Washington. To assist the US Army Corps of Engineers -- Seattle District in determining the potential environmental impacts of the proposed breakwaters, Battelle/Marine Sciences Laboratory performed subtidal SCUBA surveys as specified in the Washington Department of Fisheries intermediate eelgrass/macroalgae habitat survey guidelines. The objectives of the subtidal surveys were to (1) quantify the shoot densities of eelgrass; (2) provide percent cover estimates for non-eelgrass macroalgae species; (3) develop a site map indicating the qualitative distribution of eelgrass/macroalgae species, substrate characterization, approximate depth contours, and the approximate location of the proposed project features; and (4) document the time and date of the surveys, turbidity/visibility, presence of invertebrate/vertebrate species, and anecdotal observations pertinent to habitat characterization of the project site. A total of 14 dives along 12 transects (T1--T12) were successfully completed between March 15 and March 17, 1993. Eelgrass was observed on all of the transects except T7 and T8 at the western debris barrier and T12 along the waterward margin of the existing T-pier. The vicinity of the proposed east breakwater had the highest eelgrass shoot densities (up to 89 shoots/m{sup 2}) observed by the divers. Macroalgae and invertebrate species diversity were also highest at the east breakwater site. The low eelgrass densities observed at the west debris barrier site (0 to 14 shoots/m{sup 2}) can be attributed mostly to the lack of suitable substrate. The existing layer of wood debris armoring the bottom at the west project site currently limits, and in the areas of heaviest deposition probably precludes, the growth of eelgrass. As was expected, no eelgrass was observed at the south breakwater site.

  1. Earnings Returns to the British Education Expansion

    Science.gov (United States)

    Devereux, Paul J.; Fan, Wen

    2011-01-01

    We study the effects of the large expansion in British educational attainment that took place for cohorts born between 1970 and 1975. Using the Quarterly Labour Force Survey, we find that the expansion caused men to increase education by about a year on average and gain about 8% higher wages; women obtained a slightly greater increase in education…

  2. SURVEY

    DEFF Research Database (Denmark)

    SURVEY er en udbredt metode og benyttes inden for bl.a. samfundsvidenskab, humaniora, psykologi og sundhedsforskning. Også uden for forskningsverdenen er der mange organisationer som f.eks. konsulentfirmaer og offentlige institutioner samt marketingsafdelinger i private virksomheder, der arbejder...... med surveys. Denne bog gennemgår alle surveyarbejdets faser og giver en praktisk indføring i: • design af undersøgelsen og udvælgelse af stikprøver, • formulering af spørgeskemaer samt indsamling og kodning af data, • metoder til at analysere resultaterne...

  3. 76 FR 16038 - Proposed Collection; Comment Request for Prepaid Card Marketing Customer Survey, CS-10-251.

    Science.gov (United States)

    2011-03-22

    ..., IRS is hoping to leverage the theory and principles of social marketing. Social marketing principles and practices apply marketing principles to social programs. This data will provide the IRS with... Internal Revenue Service Proposed Collection; Comment Request for Prepaid Card Marketing Customer...

  4. 78 FR 70042 - Proposed Issuance of the NPDES General Permit for Oil and Gas Geotechnical Surveying and Related...

    Science.gov (United States)

    2013-11-22

    ...; (6) Hearing testimony may be provided orally or in written format. Commenters providing verbal... of the Administrative Procedure Act (APA), or any other law, to publish general notice of proposed... that NPDES general permits are permits, not rulemakings, under the APA and thus not subject to APA...

  5. Proposed program for and present status of the Geological Survey's investigation of domestic resources of radioactive raw materials

    Science.gov (United States)

    Bulter, A.P.; Killeen, P.L.; Page, G.B.; Rubey, W.W.

    1983-01-01

    This interim report is designed to show the present status of the Geological Survey's information and the parts of a comprehensive program necessary to improve our information about the raw material resources of uranium and thorium. Rarely in geologic work has it been necessary. to determine so completely a nation's resources of useful minerals in so brief a span of time. Ordinarily, information on mineral resources Is accumulated during a long period of years. However, uranium and thorium were suddenly thrust from a position of subsidiary economic interest into one of great strategic importance. Information concerning their occurrence must, therefore, be obtained as rapidly as reliable methods of investigation will permit. Accordingly the program must be at once comprehensive and carried out over an area more extensive than is usual in the search for and appraisal of most other mineral resources.

  6. Survey of foliar monoterpenes across the range of jack pine reveal three widespread chemotypes: implications to host expansion of invasive mountain pine beetle

    Directory of Open Access Journals (Sweden)

    Spencer eTaft

    2015-05-01

    Full Text Available The secondary compounds of pines (Pinus can strongly affect the physiology, ecology and behaviors of the bark beetles (Coleoptera: Curculionidae, Scolytinae that feed on sub-cortical tissues of hosts. Jack pine (Pinus banksiana has a wide natural distribution range in North America (Canada and USA and thus variations in its secondary compounds, particularly monoterpenes, could affect the host expansion of invasive mountain pine beetle (Dendroctonus ponderosae, which has recently expanded its range into the novel jack pine boreal forest. We investigated monoterpene composition of 601 jack pine trees from natural and provenance forest stands representing 63 populations from Alberta to the Atlantic coast. Throughout its range, jack pine exhibited three chemotypes characterized by high proportions of α-pinene, β-pinene, or limonene. The frequency with which the α-pinene and β-pinene chemotypes occurred at individual sites was correlated to climatic variables, such as continentality and mean annual precipitation, as were the individual α-pinene and β-pinene concentrations. However, other monoterpenes were generally not correlated to climatic variables or geographic distribution. Finally, while the enantiomeric ratios of β-pinene and limonene remained constant across jack pine’s distribution, (‒:(+-α-pinene exhibited two separate trends, thereby delineating two α-pinene phenotypes, both of which occurred across jack pine’s range. These significant variations in jack pine monoterpene composition may have cascading effects on the continued eastward spread and success of D. ponderosae in the Canadian boreal forest.

  7. Surveys of distribution and abundance of the Hawaiian hawk within the vicinity of proposed geothermal project subzones in the District of Puna, Hawaii. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Reynolds, M.; Ritchotte, G.; Viggiano, A.; Dwyer, J.; Nielsen, B.; Jacobi, J.D. [Fish and Wildlife Service, Hawaii National Park, HI (United States). Hawaii Research Station

    1994-08-01

    In 1993, the US Fish and Wildlife Service (USFWS) entered an interagency agreement with the Department of Energy (DOE) to conduct specific biological surveys to identify potential impacts of proposed geothermal development on the biota of the east rift zone of Kilauea volcano in the Puna district on the island of Hawaii. This report presents data on the distribution, habitat use, and density of the Hawaiian hawk or `Io (Buteo solitarius). Data were collected by the USFWS to assess the potential impacts of geothermal development on `Io populations on the island of Hawaii. These impacts include degradation of potential nesting habitat and increased disturbance due to construction and operation activities. Data from these surveys were analyzed as part of an island wide population assessment conducted by the Western Foundation of Vertebrate Zoology at the request of the USFWS.

  8. Methodological proposal for a systematic archaeological survey: the case of the Guadiana Menor Valley (Jaén, Spain

    Directory of Open Access Journals (Sweden)

    Chapa Brunet, Teresa

    2003-06-01

    Full Text Available The aim of this paper is to present a methodological approach to the development ola systematic archaeological survey. Inspired by the principles of Landscape Archeology, the archaeological record includes the material remains as well as geographical data. We discuss the data selection and its integration on a database and a GIS. The mechanisms generated in order to develop the sampling and its statistical bases are explained.

    El objeto de este artículo es realizar una propuesta metodológica para el desarrollo de una prospección arqueológica sistemática. Inspirada en los principios de la Arqueología del Paisaje, la documentación integra tanto los restos materiales arqueológicos como las variables del contexto geográfico. Se argumenta la selección de variables y su integración en una base de datos y en un SIG, especificándose los mecanismos generados para la elaboración del muestreo y su justificación estadística.

  9. The Bolocam Galactic Plane Survey. XII. Distance Catalog Expansion Using Kinematic Isolation of Dense Molecular Cloud Structures With 13CO(1-0)

    CERN Document Server

    Ellsworth-Bowers, Timothy P; Glenn, Jason; Ginsburg, Adam; Evans, Neal J; Battersby, Cara; Shirley, Yancy L; Svoboda, Brian

    2014-01-01

    We present an expanded distance catalog for 1,710 molecular cloud structures identified in the Bolocam Galactic Plane Survey (BGPS) version 2, representing a nearly threefold increase over the previous BGPS distance catalog. We additionally present a new method for incorporating extant data sets into our Bayesian distance probability density function (DPDF) methodology. To augment the dense-gas tracers (e.g., HCO+(3-2), NH3(1,1)) used to derive line-of-sight velocities for kinematic distances, we utilize the Galactic Ring Survey 13CO(1-0) data to morphologically extract velocities for BGPS sources. The outline of a BGPS source is used to select a region of the GRS 13CO data, along with a reference region to subtract enveloping diffuse emission, to produce a line profile of 13CO matched to the BGPS source. For objects with a HCO+(3-2) velocity, \\approx 95% of the new 13CO(1-0) velocities agree with that of the dense gas. A new prior DPDF for kinematic distance ambiguity (KDA) resolution, based on a validated f...

  10. A survey and proposed framework on the soft biometrics technique for human identification in intelligent video surveillance system.

    Science.gov (United States)

    Kim, Min-Gu; Moon, Hae-Min; Chung, Yongwha; Pan, Sung Bum

    2012-01-01

    Biometrics verification can be efficiently used for intrusion detection and intruder identification in video surveillance systems. Biometrics techniques can be largely divided into traditional and the so-called soft biometrics. Whereas traditional biometrics deals with physical characteristics such as face features, eye iris, and fingerprints, soft biometrics is concerned with such information as gender, national origin, and height. Traditional biometrics is versatile and highly accurate. But it is very difficult to get traditional biometric data from a distance and without personal cooperation. Soft biometrics, although featuring less accuracy, can be used much more freely though. Recently, many researchers have been made on human identification using soft biometrics data collected from a distance. In this paper, we use both traditional and soft biometrics for human identification and propose a framework for solving such problems as lighting, occlusion, and shadowing.

  11. A Survey and Proposed Framework on the Soft Biometrics Technique for Human Identification in Intelligent Video Surveillance System

    Directory of Open Access Journals (Sweden)

    Min-Gu Kim

    2012-01-01

    Full Text Available Biometrics verification can be efficiently used for intrusion detection and intruder identification in video surveillance systems. Biometrics techniques can be largely divided into traditional and the so-called soft biometrics. Whereas traditional biometrics deals with physical characteristics such as face features, eye iris, and fingerprints, soft biometrics is concerned with such information as gender, national origin, and height. Traditional biometrics is versatile and highly accurate. But it is very difficult to get traditional biometric data from a distance and without personal cooperation. Soft biometrics, although featuring less accuracy, can be used much more freely though. Recently, many researchers have been made on human identification using soft biometrics data collected from a distance. In this paper, we use both traditional and soft biometrics for human identification and propose a framework for solving such problems as lighting, occlusion, and shadowing.

  12. Operator product expansion algebra

    Energy Technology Data Exchange (ETDEWEB)

    Holland, Jan [School of Mathematics, Cardiff University, Senghennydd Rd, Cardiff CF24 4AG (United Kingdom); Hollands, Stefan [School of Mathematics, Cardiff University, Senghennydd Rd, Cardiff CF24 4AG (United Kingdom); Institut für Theoretische Physik, Universität Leipzig, Brüderstr. 16, Leipzig, D-04103 (Germany)

    2013-07-15

    We establish conceptually important properties of the operator product expansion (OPE) in the context of perturbative, Euclidean φ{sup 4}-quantum field theory. First, we demonstrate, generalizing earlier results and techniques of hep-th/1105.3375, that the 3-point OPE, =Σ{sub C}C{sub A{sub 1A{sub 2A{sub 3}{sup C}}}}, usually interpreted only as an asymptotic short distance expansion, actually converges at finite, and even large, distances. We further show that the factorization identity C{sub A{sub 1A{sub 2A{sub 3}{sup B}}}}=Σ{sub C}C{sub A{sub 1A{sub 2}{sup C}}}C{sub CA{sub 3}{sup B}} is satisfied for suitable configurations of the spacetime arguments. Again, the infinite sum is shown to be convergent. Our proofs rely on explicit bounds on the remainders of these expansions, obtained using refined versions, mostly due to Kopper et al., of the renormalization group flow equation method. These bounds also establish that each OPE coefficient is a real analytic function in the spacetime arguments for non-coinciding points. Our results hold for arbitrary but finite loop orders. They lend support to proposals for a general axiomatic framework of quantum field theory, based on such “consistency conditions” and akin to vertex operator algebras, wherein the OPE is promoted to the defining structure of the theory.

  13. Secretory myoepithelial carcinoma: a histologic and molecular survey and a proposed nomenclature for mucin producing signet ring tumors.

    Science.gov (United States)

    Bastaki, Jassem M; Purgina, Bibianna M; Dacic, Sanja; Seethala, Raja R

    2014-01-01

    Signet ring cell (mucin producing) adenocarcinoma is a rare low grade salivary gland malignancy. While currently designated as an adenocarcinoma, myoepithelial differentiation has been implied in previously reported cases. We herein perform a survey of our cases of signet ring cell adenocarcinoma and review the literature in order to refine categorization of this rare tumor. Five cases were retrieved. One was reclassified as a mammary analogue secretory carcinoma, leaving four that fulfilled the criteria for signet ring cell adenocarcinoma: the presence of prominent signet ring or vacuolated cells arranged in islands, interconnecting strands, cords or sheets in a myxoid or hyaline stroma, or pools of mucin. An extensive panel of histochemical and immunohistochemical stains and fluorescence in situ hybridization (FISH) (modeled after common phenotypes and molecular alterations seen in signet ring and myoepithelial tumors at other sites) was performed. The male-to-female ratio was 3:1. The mean age was 56 years (range 18-81). Sites involved included buccal mucosa (2), soft palate (1) and deep parotid (1). Perineural and angiolymphatic invasion were present in three and two cases respectively. One patient was lost to follow up and the remainder were alive and without disease at time of last follow up (mean 38 months). All cases showed mucicarmine positive vacuolated/signet ring cells embedded in a myxoid stroma. Three cases showed at least focal p63 staining and two cases showed positivity for calponin. Membranous E-cadherin was retained in all cases. FISH was negative for ETV6, EWSR1, and ALK1 rearrangements in all four cases. Based on the current series and the previously reported cases, it is evident that signet ring adenocarcinomas have a dual secretory and myoepithelial phenotype and thus as a whole more appropriately designated as 'secretory myoepithelial carcinoma.' They behave in a fairly indolent fashion and do not share the major molecular alterations seen

  14. THE BOLOCAM GALACTIC PLANE SURVEY. XII. DISTANCE CATALOG EXPANSION USING KINEMATIC ISOLATION OF DENSE MOLECULAR CLOUD STRUCTURES WITH {sup 13}CO(1-0)

    Energy Technology Data Exchange (ETDEWEB)

    Ellsworth-Bowers, Timothy P.; Glenn, Jason [CASA, University of Colorado, UCB 389, Boulder, CO 80309 (United States); Rosolowsky, Erik [Department of Physics, 4-183 CCIS, University of Alberta, Edmonton, AB T6G 2E1 (Canada); Ginsburg, Adam [European Southern Observatory, Karl-Schwarzschild-Straße 2, D-85748 Garching bei München (Germany); Evans II, Neal J. [Department of Astronomy, University of Texas, 2515 Speedway, Stop C1400, Austin, TX 78712 (United States); Battersby, Cara [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Shirley, Yancy L.; Svoboda, Brian, E-mail: timothy.ellsworthbowers@colorado.edu [Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States)

    2015-01-20

    We present an expanded distance catalog for 1710 molecular cloud structures identified in the Bolocam Galactic Plane Survey (BGPS) version 2, representing a nearly threefold increase over the previous BGPS distance catalog. We additionally present a new method for incorporating extant data sets into our Bayesian distance probability density function (DPDF) methodology. To augment the dense-gas tracers (e.g., HCO{sup +}(3-2), NH{sub 3}(1,1)) used to derive line-of-sight velocities for kinematic distances, we utilize the Galactic Ring Survey (GRS) {sup 13}CO(1-0) data to morphologically extract velocities for BGPS sources. The outline of a BGPS source is used to select a region of the GRS {sup 13}CO data, along with a reference region to subtract enveloping diffuse emission, to produce a line profile of {sup 13}CO matched to the BGPS source. For objects with a HCO{sup +}(3-2) velocity, ≈95% of the new {sup 13}CO(1-0) velocities agree with that of the dense gas. A new prior DPDF for kinematic distance ambiguity (KDA) resolution, based on a validated formalism for associating molecular cloud structures with known objects from the literature, is presented. We demonstrate this prior using catalogs of masers with trigonometric parallaxes and H II regions with robust KDA resolutions. The distance catalog presented here contains well-constrained distance estimates for 20% of BGPS V2 sources, with typical distance uncertainties ≲ 0.5 kpc. Approximately 75% of the well-constrained sources lie within 6 kpc of the Sun, concentrated in the Scutum-Centaurus arm. Galactocentric positions of objects additionally trace out portions of the Sagittarius, Perseus, and Outer arms in the first and second Galactic quadrants, and we also find evidence for significant regions of interarm dense gas.

  15. Multipole Expansion in Generalized Electrodynamics

    CERN Document Server

    Bonin, C A; Ortega, P H

    2016-01-01

    In this article we study some classical aspects of Podolsky Electrodynamics in the static regime. We develop the multipole expansion for the theory in both the electrostatic and the magnetostatic cases. We also address the problem of consistently truncating the infinite series associated with the several kinds of multipoles, yielding approximations for the static Podolskian electromagnetic field to any degree of precision required. Moreover, we apply the general theory of multipole expansion to some specific physical problems. In those problems we identify the first terms of the series with the monopole, dipole and quadrupole terms in the generalized theory. We also propose a situation in which Podolsky theory can be experimentally tested.

  16. Aerial surveys of Steller's eiders (Polysticta stelleri) and other waterbirds and marine mammals in Southwest Alaska areas proposed for navigation improvements by the U. S. Army Corps of Engineers, Alaska

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — We conducted aerial shoreline surveys in Southwest Alaska in February and March, 2000, to help estimate potential impacts of proposed marine harbor and navigation...

  17. Black Rail Pilot Survey

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Aural surveys using tape recorded calls proved to be an efficient and effective way to survey large expanses of shallow marsh for black rails (Laterallus...

  18. Intensive archaeological survey of the proposed Savannah River Ecology Laboratory Conference Center and Educational Facility, Savannah River Site, Aiken County, South Carolina

    Energy Technology Data Exchange (ETDEWEB)

    Stephenson, K.; Crass, D.C.; Sassaman, K.E.

    1993-02-01

    Documented in this report are the methods and results of an intensive archaeological survey for the proposed University of Georgia Savannah River Ecology Laboratory (SREL) Conference Center and Educational Facility on the DOE Savannah River Site (SRS). Archaeological investigations conducted by the Savannah River Archaeological Research Program (SRARP) on the 70-acre project area and associated rights-of-way consisted of subsurface testing at two previously recorded sites and the discovery of one previously unrecorded site. The results show that 2 sites contain archaeological remains that may yield significant information about human occupations in the Aiken Plateau and are therefore considered eligible for nomination to the National Register of Historic Places. Adverse impacts to these sites can be mitigated through avoidance.

  19. Surveys of the distribution of seabirds found in the vicinity of proposed geothermal project subzones in the District of Puna, Hawaii. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Reynolds, M.; Ritchotte, G.; Viggiano, A.; Dwyer, J.; Nielsen, B.; Jacobi, J.D. [Fish and Wildlife Service, Hawaii National Park, HI (United States). Hawaii Research Station

    1994-08-01

    In 1993, the US Fish and Wildlife Service (USFWS) entered into an interagency agreement with the Department of Energy (DOE) to conduct specific biological surveys to identify potential impacts of the proposed geothermal development on the natural resources of the East Rift Zone. This report presents information from published literature information and new field data on seabird populations on the island of Hawaii. These data are analyzed with regard to potential impacts of geothermal development on seabird populations in this area. Fifteen species of seabirds, waterbirds, and shorebirds are documented or suspected of being found using habitats within or immediately adjacent to the three geothermal subzones located in the Puna district on the island of Hawai`i. Of these species, two are on the federal Endangered Species List, three are on the State of Hawaii Endangered Species List, and all 15 are protected by the federal Migratory Bird Act.

  20. On skin expansion.

    Science.gov (United States)

    Pamplona, Djenane C; Velloso, Raquel Q; Radwanski, Henrique N

    2014-01-01

    This article discusses skin expansion without considering cellular growth of the skin. An in vivo analysis was carried out that involved expansion at three different sites on one patient, allowing for the observation of the relaxation process. Those measurements were used to characterize the human skin of the thorax during the surgical process of skin expansion. A comparison between the in vivo results and the numerical finite elements model of the expansion was used to identify the material elastic parameters of the skin of the thorax of that patient. Delfino's constitutive equation was chosen to model the in vivo results. The skin is considered to be an isotropic, homogeneous, hyperelastic, and incompressible membrane. When the skin is extended, such as with expanders, the collagen fibers are also extended and cause stiffening in the skin, which results in increasing resistance to expansion or further stretching. We observed this phenomenon as an increase in the parameters as subsequent expansions continued. The number and shape of the skin expanders used in expansions were also studied, both mathematically and experimentally. The choice of the site where the expansion should be performed is discussed to enlighten problems that can lead to frustrated skin expansions. These results are very encouraging and provide insight into our understanding of the behavior of stretched skin by expansion. To our knowledge, this study has provided results that considerably improve our understanding of the behavior of human skin under expansion.

  1. Reconnaissance survey of site 7 of the proposed Three Rivers Regional Landfill and Technology Center, Savannah River Site, Aiken County, South Carolina

    Energy Technology Data Exchange (ETDEWEB)

    Cabak, M.A.; Beck, M.L.; Gillam, C.; Sassaman, K.E.

    1996-02-01

    This report documents the archaeological investigation of Site 7 of the proposed Three Rivers Regional Landfill and Technology Center in Aiken County on the United States Department of Energy`s Savannah River Site (SRS) in Aiken and Barnwell Counties, South Carolina. Pedestrian and subsurface survey techniques were used to investigate the 1,403-acre project area. Survey resulted in the discovery of 23 previously unrecorded sites and 11 occurrences; six previously recorded sites were also investigated. These sites consist of six prehistoric sites, nine historic sites, and 14 sites with both prehistoric and historic components. Sites locations and project area boundaries are provided on a facsimile of a USGS 7.5 topographic map. The prehistoric components consist of very small, low-density lithic and ceramic scatters; most contain less than 10 artifacts. Six of the prehistoric components are of unknown cultural affiliation, the remaining prehistoric sites were occupied predominately in the Woodland period. The historic sites are dominated by postbellum/modem home places of tenant and yeoman farmers but four historic sites were locations of antebellum house sites (38AK136, 38AK613, 38AK660, and 38AK674). The historic sites also include an African-American school (38AK677).

  2. Hubble expansion is not a velocity

    Science.gov (United States)

    Ma, Yin-Zhe; Zhang, Shuang-Nan

    2016-11-01

    In this paper, we clarify the difference between the Hubble expansion and the Doppler shift pedagogically and illustrate both physically and mathematically why the Hubble expansion cannot be regarded as a velocity. Therefore, we suggest to replace the misleading word ‘recession velocity’ to be ‘Hubble recession’ to describe the cosmic expansion. We further derive how the peculiar velocity of a galaxy is related to its observed redshift and proper distance, which has practical use in the galaxy redshift and distance surveys.

  3. Business information query expansion through semantic network

    Science.gov (United States)

    Gong, Zhiguo; Muyeba, Maybin; Guo, Jingzhi

    2010-02-01

    In this article, we propose a method for business information query expansions. In our approach, hypernym/hyponymy and synonym relations in WordNet are used as the basic expansion rules. Then we use WordNet Lexical Chains and WordNet semantic similarity to assign terms in the same query into different groups with respect to their semantic similarities. For each group, we expand the highest terms in the WordNet hierarchies with hypernym and synonym, the lowest terms with hyponym and synonym and all other terms with only synonym. In this way, the contradictory caused by full expansion can be well controlled. Furthermore, we use collection-related term semantic network to further improve the expansion performance. And our experiment reveals that our solution for query expansion can improve the query performance dramatically.

  4. Orthogonal Query Expansion

    CERN Document Server

    Ackerman, Margareta; Lopez-Ortiz, Alejandro

    2011-01-01

    Over the last fifteen years, web searching has seen tremendous improvements. Starting from a nearly random collection of matching pages in 1995, today, search engines tend to satisfy the user's informational need on well-formulated queries. One of the main remaining challenges is to satisfy the users' needs when they provide a poorly formulated query. When the pages matching the user's original keywords are judged to be unsatisfactory, query expansion techniques are used to alter the result set. These techniques find keywords that are similar to the keywords given by the user, which are then appended to the original query leading to a perturbation of the result set. However, when the original query is sufficiently ill-posed, the user's informational need is best met using entirely different keywords, and a small perturbation of the original result set is bound to fail. We propose a novel approach that is not based on the keywords of the original query. We intentionally seek out orthogonal queries, which are r...

  5. Origami Metamaterials for Tunable Thermal Expansion.

    Science.gov (United States)

    Boatti, Elisa; Vasios, Nikolaos; Bertoldi, Katia

    2017-07-01

    Materials with engineered thermal expansion, capable of achieving targeted area/volume changes in response to variations in temperature, are important for a number of aerospace, optical, energy, and microelectronic applications. While most of the proposed structures with engineered coefficient of thermal expansion consist of bi-material 2D or 3D lattices, here it is shown that origami metamaterials also provide a platform for the design of systems with a wide range of thermal expansion coefficients. Experiments and simulations are combined to demonstrate that by tuning the geometrical parameters of the origami structure and the arrangement of plates and creases, an extremely broad range of thermal expansion coefficients can be obtained. Differently from all previously reported systems, the proposed structure is tunable in situ and nonporous. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  6. Extrudate Expansion Modelling through Dimensional Analysis Method

    DEFF Research Database (Denmark)

    A new model framework is proposed to correlate extrudate expansion and extrusion operation parameters for a food extrusion cooking process through dimensional analysis principle, i.e. Buckingham pi theorem. Three dimensionless groups, i.e. energy, water content and temperature, are suggested...... to describe the extrudates expansion. From the three dimensionless groups, an equation with three experimentally determined parameters is derived to express the extrudate expansion. The model is evaluated with whole wheat flour and aquatic feed extrusion experimental data. The average deviations...

  7. Exponential Expansion in Evolutionary Economics

    DEFF Research Database (Denmark)

    Frederiksen, Peter; Jagtfelt, Tue

    2013-01-01

    concepts are described in detail. Taken together it provides the rudimentary aspects of an economic system within an analytical perspective. It is argued that the main dynamic processes of the evolutionary perspective can be reduced to these four concepts. The model and concepts are evaluated in the light...... of Thomas Kuhn’s notion of scientific paradigms and criteria for a good theory (1977, 1996). The paper thus aims to augment and assimilate the fragmented and scattered body of concepts presently residing within the field of evolutionary economics, by presenting an intuitive framework, applicable within...... to this problem is proposed in the form of a model of exponential expansion. The model outlines the overall structure and function of the economy as exponential expansion. The pictographic model describes four axiomatic concepts and their exponential nature. The interactive, directional, emerging and expanding...

  8. An effective theory of accelerated expansion

    CERN Document Server

    Jimenez, Raul; Verde, Licia

    2011-01-01

    We work out an effective theory of accelerated expansion to describe general phenomena of inflation and acceleration (dark energy) in the Universe. Our aim is to determine from theoretical grounds, in a physically-motivated and model independent way, which and how many (free) parameters are needed to broadly capture the physics of a theory describing cosmic acceleration. Our goal is to make as much as possible transparent the physical interpretation of the parameters describing the expansion. We show that, at leading order, there are five independent parameters, of which one can be constrained via general relativity tests. The other four parameters need to be determined by observing and measuring the cosmic expansion rate only, H(z). Therefore we suggest that future cosmology surveys focus on obtaining an accurate as possible measurement of $H(z)$ to constrain the nature of accelerated expansion (dark energy and/or inflation).

  9. Negative thermal expansion

    Energy Technology Data Exchange (ETDEWEB)

    Barrera, G D [Departamento de QuImica, Universidad Nacional de la Patagonia SJB, Ciudad Universitaria, 9000 Comodoro Rivadavia (Argentina); Bruno, J A O [Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de QuImica Inorganica, AnalItica y QuImica FIsica, Pabellon 2, Ciudad Universitaria, 1428 Buenos Aires (Argentina); Barron, T H K [School of Chemistry, University of Bristol, Cantock' s Close, Bristol BS8 1TS (United Kingdom); Allan, N L [School of Chemistry, University of Bristol, Cantock' s Close, Bristol BS8 1TS (United Kingdom)

    2005-02-02

    There has been substantial renewed interest in negative thermal expansion following the discovery that cubic ZrW{sub 2}O{sub 8} contracts over a temperature range in excess of 1000 K. Substances of many different kinds show negative thermal expansion, especially at low temperatures. In this article we review the underlying thermodynamics, emphasizing the roles of thermal stress and elasticity. We also discuss vibrational and non-vibrational mechanisms operating on the atomic scale that are responsible for negative expansion, both isotropic and anisotropic, in a wide range of materials. (topical review)

  10. Imagination as expansion of experience.

    Science.gov (United States)

    Zittoun, Tania; Cerchia, Frédéric

    2013-09-01

    This paper proposes a developmental view on imagination: from this perspective, imagination can be seen as triggered by some disrupting event, which generates a disjunction from the person's unfolding experience of the "real" world, and as unfolding as a loop, which eventually comes back to the actual experience. Examining recent and classical theorization of imagination in psychology, the paper opposes a deficitary view of imagination to an expansive notion of imagination. The paper explores Piaget, Vygotsky, Harris and Pelaprat & Cole consider: 1) What does provoke a "rupture" or disjunction? 2) What are the psychological processes involved in the imaginary loop? 3) What nourishes such processes? 4) What are the consequences of such imaginary loop, or what does it enable doing? The paper proposes to adopt an expansive view of imagination, as Vygotsky proposed-a perspective that has been under-explored empirically since his seminal work. To stimulate such sociocultural psychology of imagination, two empirical examples are provided, one showing how children make sense of metaphor in an experimental setting, the other showing a young person using a novel met at school as symbolic resource.

  11. Thermal Expansion "Paradox."

    Science.gov (United States)

    Fakhruddin, Hasan

    1993-01-01

    Describes a paradox in the equation for thermal expansion. If the calculations for heating a rod and subsequently cooling a rod are determined, the new length of the cool rod is shorter than expected. (PR)

  12. Gravitational entropy of cosmic expansion

    CERN Document Server

    Sussman, Roberto A

    2014-01-01

    We apply a recent proposal to define "gravitational entropy" to the expansion of cosmic voids within the framework of non-perturbative General Relativity. By considering CDM void configurations compatible with basic observational constraints, we show that this entropy grows from post-inflationary conditions towards a final asymptotic value in a late time fully non-linear regime described by the Lemaitre-Tolman-Bondi (LTB) dust models. A qualitatively analogous behavior occurs if we assume a positive cosmological constant consistent with a $\\Lambda$-CDM background model. However, the $\\Lambda$ term introduces a significant suppression of entropy growth with the terminal equilibrium value reached at a much faster rate.

  13. Expansion of the whole wheat flour extrusion

    DEFF Research Database (Denmark)

    Cheng, Hongyuan; Friis, Alan

    2008-01-01

    A new model framework is proposed to describe the expansion of extrudates with extruder operating conditions based on dimensional analysis principle. The Buckingham pi dimensional analysis method is applied to form the basic structure of the model from extrusion process operational parameters. Us....... Using the Central Composite Design (CCD) method, whole wheat flour was processed in a twin-screw extruder with 16 trials. The proposed model can well correlate the expansion of the 16 trials using 3 regression parameters. The average deviation of the correlation is 5.9%....

  14. Expansion of the whole wheat flour extrusion

    DEFF Research Database (Denmark)

    Cheng, Hongyuan; Friis, Alan

    2008-01-01

    A new model framework is proposed to describe the expansion of extrudates with extruder operating conditions based on dimensional analysis principle. The Buckingham pi dimensional analysis method is applied to form the basic structure of the model from extrusion process operational parameters....... Using the Central Composite Design (CCD) method, whole wheat flour was processed in a twin-screw extruder with 16 trials. The proposed model can well correlate the expansion of the 16 trials using 3 regression parameters. The average deviation of the correlation is 5.9%....

  15. Giant negative thermal expansion in magnetic nanocrystals.

    Science.gov (United States)

    Zheng, X G; Kubozono, H; Yamada, H; Kato, K; Ishiwata, Y; Xu, C N

    2008-12-01

    Most solids expand when they are heated, but a property known as negative thermal expansion has been observed in a number of materials, including the oxide ZrW2O8 (ref. 1) and the framework material ZnxCd1-x(CN)2 (refs 2,3). This unusual behaviour can be understood in terms of low-energy phonons, while the colossal values of both positive and negative thermal expansion recently observed in another framework material, Ag3[Co(CN)6], have been explained in terms of the geometric flexibility of its metal-cyanide-metal linkages. Thermal expansion can also be stopped in some magnetic transition metal alloys below their magnetic ordering temperature, a phenomenon known as the Invar effect, and the possibility of exploiting materials with tuneable positive or negative thermal expansion in industrial applications has led to intense interest in both the Invar effect and negative thermal expansion. Here we report the results of thermal expansion experiments on three magnetic nanocrystals-CuO, MnF2 and NiO-and find evidence for negative thermal expansion in both CuO and MnF2 below their magnetic ordering temperatures, but not in NiO. Larger particles of CuO and MnF2 also show prominent magnetostriction (that is, they change shape in response to an applied magnetic field), which results in significantly reduced thermal expansion below their magnetic ordering temperatures; this behaviour is not observed in NiO. We propose that the negative thermal expansion effect in CuO (which is four times larger than that observed in ZrW2O8) and MnF2 is a general property of nanoparticles in which there is strong coupling between magnetism and the crystal lattice.

  16. New approach of (G′/G)-expansion method and new approach of generalized (G′/G)-expansion method for nonlinear evolution equation

    National Research Council Canada - National Science Library

    Naher, Hasibun; Abdullah, Farah Aini

    2013-01-01

    In this article, new (G′/G)-expansion method and new generalized (G′/G)-expansion method is proposed to generate more general and abundant new exact traveling wave solutions of nonlinear evolution equations...

  17. Composite asymptotic expansions

    CERN Document Server

    Fruchard, Augustin

    2013-01-01

    The purpose of these lecture notes is to develop a theory of asymptotic expansions for functions involving two variables, while at the same time using functions involving one variable and functions of the quotient of these two variables. Such composite asymptotic expansions (CAsEs) are particularly well-suited to describing solutions of singularly perturbed ordinary differential equations near turning points. CAsEs imply inner and outer expansions near turning points. Thus our approach is closely related to the method of matched asymptotic expansions. CAsEs offer two unique advantages, however. First, they provide uniform expansions near a turning point and away from it. Second, a Gevrey version of CAsEs is available and detailed in the lecture notes. Three problems are presented in which CAsEs are useful. The first application concerns canard solutions near a multiple turning point. The second application concerns so-called non-smooth or angular canard solutions. Finally an Ackerberg-O’Malley resonance pro...

  18. An Archaeological Reconnaissance Survey of the Proposed Channel Realignment Area at Big Stone-Whetstone Flood Control Project, Big Stone and Lac Qui Parle Counties, Minnesota.

    Science.gov (United States)

    1980-08-01

    Forest. With Nancy L. Woolworth . For the United States3 Forest Service. Milwaukee, Wisconsin. Fall, 1979. Site Supervisor: Site Survey of the Stanton and...Survey of the Bureau of Reclamation Irrigation Project Near Pollock and Herreid, Campbell County, South Dakota. With Nancy L. Woolworth . Summer, 1978...the Historic and Prehistoric Resources of theChipewa Natlonal Forest. W-ith Nancy L. Woolworth . Yore United-9tates Forest Service. Aerial Infrared

  19. Linearization problem in pseudolite surveys

    Science.gov (United States)

    Cellmer, Slawomir; Rapinski, Jacek

    2010-06-01

    GPS augmented with pseudolites (PL), can be used in various engineering surveys. Also pseudolite—only navigation system can be designed and used in any place, even if GPS signal is not available (Kee et al. Development of indoor navigation system using asynchronous pseudolites, 1038-1045, 2000). Especially in engineering surveys, where harsh survey environment is common, pseudolites have a lot of applications. Pseudolites may be used in construction sites, open pit mines, city canyons, GPS and PL baseline processing is similar, although there are few differences that must be taken into account. One of the major issues is linearization problem. The source of the problem is neglecting second terms of Taylor series expansion in GPS baseline processing software. This problem occurs when the pseudolite is relatively close to the receiver, which is the case in PL surveys. In this paper authors presents the algorithm for GPS + PL data processing including, neglected in classical GPS only approach, second terms of Taylor series expansion. The mathematical model of adjustment problem, detailed proposal of application in baseline processing algorithms, and numerical tests are presented.

  20. Bathymetric and Velocimetric Survey and Assessment of Habitat for Pallid Sturgeon on the Mississippi River in the Vicinity of the Proposed Interstate 70 Bridge at St. Louis, Missouri

    Science.gov (United States)

    Huizinga, Richard J.; Elliott, Caroline M.; Jacobson, Robert B.

    2010-01-01

    A bathymetric and velocimetry survey was conducted on the Mississippi River in the vicinity of a proposed new bridge for Interstate 70 at St. Louis, Missouri. A multibeam echo sounder mapping system and an acoustic Doppler current profiler were used to obtain channel-bed elevations and vertically averaged and near-bed velocities for a 3,545-foot (1,080-meter) long reach of the Mississippi River approximately 1,935 feet (590 meters) wide from the Illinois to Missouri banks. Data from the 2009 survey were used to determine the conditions of the benthic habitat in the vicinity of the proposed Interstate 70 bridge. The channel-bed elevations ranged from approximately 346 feet (105.46 meters) to 370 feet (112.78 meters) above the North American Vertical Datum of 1988 in a majority of the channel except for the channel banks. Large dune features up to 12.5 feet (3.81 meters) high were present in the middle of the channel, and numerous smaller dunes and many ripples as smaller features were superimposed on the larger dunes. However, it is uncertain if the large dune features present in mid-channel are long-term features or an artifact of the seasonal flooding on the Mississippi River. A substantial scour depression was present on the right descending bank (Missouri side) near the downstream end of the study area, as well as other smaller scour holes near the instream barge mooring structures on the Missouri bank. The vertically averaged velocities acquired with the acoustic Doppler current profiler ranged from approximately 2 feet per second (0.61 meters per second) along the channel margins to approximately 7.0 feet per second (2.13 meters per second) in the main channel, with an average velocity of 5.5 feet per second (1.68 meters per second) in mid-channel. The orientation of the vertically averaged velocity vectors showed flow crossing from the Illinois bank to the Missouri bank from upstream to downstream in the study area, which was confirmed by the orientation of

  1. Novel Foraminal Expansion Technique

    Science.gov (United States)

    Senturk, Salim; Ciplak, Mert; Oktenoglu, Tunc; Sasani, Mehdi; Egemen, Emrah; Yaman, Onur; Suzer, Tuncer

    2016-01-01

    The technique we describe was developed for cervical foraminal stenosis for cases in which a keyhole foraminotomy would not be effective. Many cervical stenosis cases are so severe that keyhole foraminotomy is not successful. However, the technique outlined in this study provides adequate enlargement of an entire cervical foraminal diameter. This study reports on a novel foraminal expansion technique. Linear drilling was performed in the middle of the facet joint. A small bone graft was placed between the divided lateral masses after distraction. A lateral mass stabilization was performed with screws and rods following the expansion procedure. A cervical foramen was linearly drilled medially to laterally, then expanded with small bone grafts, and a lateral mass instrumentation was added with surgery. The patient was well after the surgery. The novel foraminal expansion is an effective surgical method for severe foraminal stenosis. PMID:27559460

  2. Steppe expansion in Patagonia?

    Science.gov (United States)

    Veblen, Thomas T.; Markgraf, Vera

    1988-11-01

    Westward expansion of the Patagonian steppe and retrocession of Andean forests due to increasing aridity over the past one or two millennia has been a persistent theme in the ecological and paleoecological literature for at least half a century. New evidence from pollen profiles, tree-ring analysis, vegetation structure, and photographic and documentary historical sources does not show the expansion of the steppe. Instead, over the past century trees have invaded the steppe as a consequence mainly of human-induced changes in the fire regime, and trees have regenerated in forest areas that were heavily burnt at the onset of European colonization.

  3. Uniform gradient expansions

    Directory of Open Access Journals (Sweden)

    Massimo Giovannini

    2015-06-01

    Full Text Available Cosmological singularities are often discussed by means of a gradient expansion that can also describe, during a quasi-de Sitter phase, the progressive suppression of curvature inhomogeneities. While the inflationary event horizon is being formed the two mentioned regimes coexist and a uniform expansion can be conceived and applied to the evolution of spatial gradients across the protoinflationary boundary. It is argued that conventional arguments addressing the preinflationary initial conditions are necessary but generally not sufficient to guarantee a homogeneous onset of the conventional inflationary stage.

  4. Uniform gradient expansions

    Energy Technology Data Exchange (ETDEWEB)

    Giovannini, Massimo, E-mail: massimo.giovannini@cern.ch [Department of Physics, Theory Division, CERN, 1211 Geneva 23 (Switzerland); INFN, Section of Milan-Bicocca, 20126 Milan (Italy)

    2015-06-30

    Cosmological singularities are often discussed by means of a gradient expansion that can also describe, during a quasi-de Sitter phase, the progressive suppression of curvature inhomogeneities. While the inflationary event horizon is being formed the two mentioned regimes coexist and a uniform expansion can be conceived and applied to the evolution of spatial gradients across the protoinflationary boundary. It is argued that conventional arguments addressing the preinflationary initial conditions are necessary but generally not sufficient to guarantee a homogeneous onset of the conventional inflationary stage.

  5. Adapting Query Expansion to Search Proficiency

    NARCIS (Netherlands)

    C. Boscarino (Corrado); V. Hollink (Vera); A.P. de Vries (Arjen); B. Carterette; E. Kanoulas; P. Clough; M. Sanderson

    2012-01-01

    htmlabstractWe argue that query expansion (QE) based on the full ses- sion improves the overall search experience provided that we know how to adapt the QE weighting schema to a user's search proficiency. We propose a strategy to predict search ability from session parameters. Us- ing an

  6. Expansive Soil Crack Depth under Cumulative Damage

    Directory of Open Access Journals (Sweden)

    Bei-xiao Shi

    2014-01-01

    Full Text Available The crack developing depth is a key problem to slope stability of the expansive soil and its project governance and the crack appears under the roles of dry-wet cycle and gradually develops. It is believed from the analysis that, because of its own cohesion, the expansive soil will have a certain amount of deformation under pulling stress but without cracks. The soil body will crack only when the deformation exceeds the ultimate tensile strain that causes cracks. And it is also believed that, due to the combined effect of various environmental factors, particularly changes of the internal water content, the inherent basic physical properties of expansive soil are weakened, and irreversible cumulative damages are eventually formed, resulting in the development of expansive soil cracks in depth. Starting from the perspective of volumetric strain that is caused by water loss, considering the influences of water loss rate and dry-wet cycle on crack developing depth, the crack developing depth calculation model which considers the water loss rate and the cumulative damages is established. Both the proposal of water loss rate and the application of cumulative damage theory to the expansive soil crack development problems try to avoid difficulties in matrix suction measurement, which will surely play a good role in promoting and improving the research of unsaturated expansive soil.

  7. Geometry Modeling of an Electronic Expansion Valve Head

    Institute of Scientific and Technical Information of China (English)

    张川; 马善伟; 陈江平; 陈芝久; 陈文勇; 王健

    2004-01-01

    This paper proposed that the flow characteristic of electronic expansion valve should be adapted to the evaporator superheat gain to refrigerant flow rate under different working conditions. Two native methods of geometry modeling of electronic expansion valve head were introduced. By analysis of them, some shortcoming was detected and a universal modeling method of electronic expansion valve head was put forward. Through this model, the flow characteristic of EEV and the influence factors can be investigated more deeply.

  8. Expansion of Pannes

    Science.gov (United States)

    For the Long Island, New Jersey, and southern New England region, one facet of marsh drowning as a result of accelerated sea level rise is the expansion of salt marsh ponds and pannes. Over the past century, marsh ponds and pannes have formed and expanded in areas of poor drainag...

  9. On storm weakening during substorm expansion phase

    Directory of Open Access Journals (Sweden)

    G. L. Siscoe

    Full Text Available Iyemori and Rao recently presented evidence that the strength of a magnetic storm, as measured by -Dst, weakens, or its rate of growth slows, during the substorm expansion phase. Yet the expansion phase is known to inject energetic particles into the ring current, which should strengthen the storm. We propose to reconcile these apparently contradictory results by combining the virial theorem and a principle of energy partitioning between energy storage elements in a system with dissipation. As applied to the unloading description of the substorm expansion phase, the virial theorem states that -Dst is proportional to the sum of the total magnetic energy and twice the total kinetic energy in the magnetosphere including the tail. Thus if expansion phase involves converting magnetic energy stored in the tail into kinetic energy stored in the ring current, a drop in -Dst during expansion phase requires that less than half the drop in magnetic energy goes into the ring current, the rest going into the ionosphere. Indeed Weiss et al., have estimated that the energy dissipated in the ionosphere during expansion phase is twice that injected into the ring current. This conclusion is also consistent with the mentioned energy partitioning principle, which requires that more energy be dissipated than transferred between storage elements. While Iyemori and Rao's observations seem to contradict the hypothesis that storms consist at least in part of a sum of substorms, this mode of description might nonetheless be preserved by including the substorm's growth-phase contribution. Then the change in storm strength measured from before the growth phase to after the expansion phase is positive, even though the expansion phase alone makes a negative contribution.

  10. The stability analysis of expansive slope in Jing-Yi Expressway

    Institute of Scientific and Technical Information of China (English)

    ZUO Chang-qun; CHEN Jian-ping

    2007-01-01

    This paper firstly introduces the distribution of weathered layers, and then presents the relationship between water content and expansive force and the working model of expansive forces in expansive soil slopes. Taking the expansive soil slope of Jing-Yi Expressway as example and applying the Slices Method, this paper puts forward the stability calculation method considering the effect of expansive forces, and also proposes the treatments.

  11. Survey of the Archaeological Resources Along the Existing and Proposed Levees on Kaskaskia Island in Randolph County, Illinois, and Ste. Genevieve County, Missouri,

    Science.gov (United States)

    1975-11-01

    levees were covered. At that time the amount of walkable land was hindered by crops, water, silt deposits, weeds and sloughs. Consequently the survey...the present city of Collinsville, Illinois, is the Cahokia site, the largest single site in North America. It includes Monk’s Mound (the largest

  12. Primordial vorticity and gradient expansion

    Science.gov (United States)

    Giovannini, Massimo; Rezaei, Zahra

    2012-02-01

    The evolution equations of the vorticities of the electrons, ions and photons in a pre-decoupling plasma are derived, in a fully inhomogeneous geometry, by combining the general relativistic gradient expansion and the drift approximation within the Adler-Misner-Deser decomposition. The vorticity transfer between the different species is discussed in this novel framework and a set of general conservation laws, connecting the vorticities of the three-component plasma with the magnetic field intensity, is derived. After demonstrating that a source of large-scale vorticity resides in the spatial gradients of the geometry and of the electromagnetic sources, the total vorticity is estimated to lowest order in the spatial gradients and by enforcing the validity of the momentum constraint. By acknowledging the current bounds on the tensor to scalar ratio in the (minimal) tensor extension of the ΛCDM paradigm, the maximal comoving magnetic field induced by the total vorticity turns out to be, at most, of the order of 10-37 G over the typical comoving scales ranging between 1 and 10 Mpc. While the obtained results seem to be irrelevant for seeding a reasonable galactic dynamo action, they demonstrate how the proposed fully inhomogeneous treatment can be used for the systematic scrutiny of pre-decoupling plasmas beyond the conventional perturbative expansions.

  13. Proposal: Baseline Survey for Bats, Specifically Rafinesque’s Big-eared Bats (Corynorhinus rafinesquii) and Southeastern Myotis (Myotis austroriparius) on the Savannah NWR and Santee NWR

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The primary objective of this proposal is to perform a baseline inventory of bat species at Savannah NWR, and to target bat species of concern (Rafinesque’s...

  14. Proposal - Mapping of Six Federally Endangered Listed Plants and Surveying the Population Status of Eugenia woodburyana at La Tinaja, Laguna Cartagena National Wildlife Refuge. Lajas, Puerto Rico

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This proposal concerns the distribution and relative abundance of 5 federally endangered plants endemic to Puerto Rico and specifically on Laguna Cartagena National...

  15. A progress report on fishery surveys along the route of the proposed Trans-Alaska Pipeline between the Yukon River and Atigun Pass during 1971

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This progress report represents a summary of findings of the field work conducted by USFWS during the summer of 1971 along the route of the proposed Trans-Alaska...

  16. Proposal for the pre-sediment removal aquatic survey of Lake Mary, Ladora, and Lower Derby Reservois located on the U.S. Army Rocky Mountain Arsenal, Colorado

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Proposal for a monitoring program at the Rocky Mountain Arsenal (RMA) to document the effectiveness of the sediment removal program. This project has been initiated...

  17. Land acquisition pre-proposal investigation - expansion of Hillside NWR

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This document is a collection of correspondence related to the acquisition or easement of the Blissdale property at Hillside National Wildlife Refuge. This document...

  18. Bigravity from gradient expansion

    Energy Technology Data Exchange (ETDEWEB)

    Yamashita, Yasuho [Yukawa Institute for Theoretical Physics, Kyoto University,606-8502, Kyoto (Japan); Tanaka, Takahiro [Yukawa Institute for Theoretical Physics, Kyoto University,606-8502, Kyoto (Japan); Department of Physics, Kyoto University,606-8502, Kyoto (Japan)

    2016-05-04

    We discuss how the ghost-free bigravity coupled with a single scalar field can be derived from a braneworld setup. We consider DGP two-brane model without radion stabilization. The bulk configuration is solved for given boundary metrics, and it is substituted back into the action to obtain the effective four-dimensional action. In order to obtain the ghost-free bigravity, we consider the gradient expansion in which the brane separation is supposed to be sufficiently small so that two boundary metrics are almost identical. The obtained effective theory is shown to be ghost free as expected, however, the interaction between two gravitons takes the Fierz-Pauli form at the leading order of the gradient expansion, even though we do not use the approximation of linear perturbation. We also find that the radion remains as a scalar field in the four-dimensional effective theory, but its coupling to the metrics is non-trivial.

  19. Operator product expansion algebra

    Energy Technology Data Exchange (ETDEWEB)

    Holland, Jan [CPHT, Ecole Polytechnique, Paris-Palaiseau (France)

    2014-07-01

    The Operator Product Expansion (OPE) is a theoretical tool for studying the short distance behaviour of products of local quantum fields. Over the past 40 years, the OPE has not only found widespread computational application in high-energy physics, but, on a more conceptual level, it also encodes fundamental information on algebraic structures underlying quantum field theories. I review new insights into the status and properties of the OPE within Euclidean perturbation theory, addressing in particular the topics of convergence and ''factorisation'' of the expansion. Further, I present a formula for the ''deformation'' of the OPE algebra caused by a quartic interaction. This formula can be used to set up a novel iterative scheme for the perturbative computation of OPE coefficients, based solely on the zeroth order coefficients (and renormalisation conditions) as initial input.

  20. A Bayesian approach to image expansion for improved definition.

    Science.gov (United States)

    Schultz, R R; Stevenson, R L

    1994-01-01

    Accurate image expansion is important in many areas of image analysis. Common methods of expansion, such as linear and spline techniques, tend to smooth the image data at edge regions. This paper introduces a method for nonlinear image expansion which preserves the discontinuities of the original image, producing an expanded image with improved definition. The maximum a posteriori (MAP) estimation techniques that are proposed for noise-free and noisy images result in the optimization of convex functionals. The expanded images produced from these methods will be shown to be aesthetically and quantitatively superior to images expanded by the standard methods of replication, linear interpolation, and cubic B-spline expansion.

  1. Orthogonal Expansions for VIX Options Under Affine Jump Diffusions

    DEFF Research Database (Denmark)

    Barletta, Andrea; Nicolato, Elisa

    2017-01-01

    In this work we derive new closed–form pricing formulas for VIX options in the jump-diffusion SVJJ model proposed by Duffie et al. (2000). Our approach is based on the classic methodology of approximating a density function with an orthogonal expansion of polynomials weighted by a kernel....... Orthogonal expansions based on the Gaussian distribution, such as Edgeworth or Gram–Charlier expansions, have been successfully employed by a number of authors in the context of equity options. However, these expansions are not quite suitable for volatility or variance densities as they inherently assign...

  2. The Identity String Field and the Sliver Frame Level Expansion

    CERN Document Server

    Erler, Theodore

    2012-01-01

    We propose a modified version of the sliver-frame level expansion which gives a tool for analyzing singularities related to the identity string field. We apply this formalism to the newly discovered solutions of Masuda, Noumi, and Takahashi.

  3. Thermal expansion of glassy polymers.

    Science.gov (United States)

    Davy, K W; Braden, M

    1992-01-01

    The thermal expansion of a number of glassy polymers of interest in dentistry has been studied using a quartz dilatometer. In some cases, the expansion was linear and therefore the coefficient of thermal expansion readily determined. Other polymers exhibited non-linear behaviour and values appropriate to different temperature ranges are quoted. The linear coefficient of thermal expansion was, to a first approximation, a function of both the molar volume and van der Waal's volume of the repeating unit.

  4. Cultural Resource Survey and Assessment of Proposed Valley Park Levee Alignment and Borrow Areas, St. Louis County, Missouri. St. Louis District Cultural Resource Management Report Number 10.

    Science.gov (United States)

    1984-02-01

    Park, John Smizer built a distillery , sawmill, flourmill, and mercantile center (ca. 1850) In an area now called Spring Hill. Spring Hill soon became...for the Proposed Lower Meramec River Basin Wastewater Treatment Faclitles. U. S. Environmental Protection Agency, Kansas City. Schroeder, Walter A. 1981

  5. The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: measurements of the growth of structure and expansion rate at z=0.57 from anisotropic clustering

    CERN Document Server

    Reid, Beth A; White, Martin; Percival, Will J; Manera, Marc; Padmanabhan, Nikhil; Ross, Ashley J; Sánchez, Ariel G; Bailey, Stephen; Bizyaev, Dmitry; Bolton, Adam S; Brewington, Howard; Brinkmann, J; Brownstein, Joel R; Cuesta, Antonio J; Eisenstein, Daniel J; Gunn, James E; Honscheid, Klaus; Malanushenko, Elena; Malanushenko, Viktor; Maraston, Claudia; McBride, Cameron K; Muna, Demitri; Nichol, Robert C; Oravetz, Daniel; Pan, Kaike; de Putter, Roland; Roe, N A; Ross, Nicholas P; Schlegel, David J; Schneider, Donald P; Seo, Hee-Jong; Shelden, Alaina; Sheldon, Erin S; Simmons, Audrey; Skibba, Ramin A; Snedden, Stephanie; Swanson, Molly E C; Thomas, Daniel; Tinker, Jeremy; Tojeiro, Rita; Verde, Licia; Wake, David A; Weaver, Benjamin A; Weinberg, David H; Zehavi, Idit; Zhao, Gong-Bo

    2012-01-01

    We analyze the anisotropic clustering of massive galaxies from the Sloan Digital Sky Survey III Baryon Oscillation Spectroscopic Survey (BOSS) Data Release 9 (DR9) sample, which consists of 264,283 galaxies in the redshift range 0.43 0.57, and when combined imply \\Omega_{\\Lambda} = 0.74 +/- 0.016, independent of the Universe's evolution at z<0.57. In our companion paper (Samushia et al. prep), we explore further cosmological implications of these observations.

  6. Testing Machine for Expansive Mortar

    CERN Document Server

    Silva, Romulo Augusto Ventura

    2011-01-01

    The correct evaluation of a material property is fundamental to, on their application; they met all expectations that were designed for. In development of an expansive cement for ornamental rocks purpose, was denoted the absence of methodologies and equipments to evaluate the expansive pressure and temperature of expansive cement during their expansive process, having that data collected in a static state of the specimen. In that paper, is described equipment designed for evaluation of pressure and temperature of expansive cements applied to ornamental rocks.

  7. Engineering Properties of Expansive Soil

    Institute of Scientific and Technical Information of China (English)

    DAI Shaobin; SONG Minghai; HUANG Jun

    2005-01-01

    The components of expansive soil were analyzed with EDAX, and it is shown that the main contents of expansive soil in the northern Hubei have some significant effects on engineering properties of expansive soil. Furthermore, the soil modified by lime has an obvious increase of Ca2+ and an improvement of connections between granules so as to reduce the expansibility and contractility of soil. And it also has a better effect on the modified expansive soil than the one modified by pulverized fuel ash.

  8. Religiosity and the expansion of caregiver stress.

    Science.gov (United States)

    Leblanc, A J; Driscoll, A K; Pearlin, L I

    2004-09-01

    We present a stress process framework as a model for understanding how religiosity may influence the expansion of stress. Survey data from informal caregivers to a spouse with Alzheimer's disease or a related dementia (n = 200) were analyzed to observe the relationships among three variables: (1) care-related stress, (2) religiosity, and (3) depression. This sample, which has a mean age of 73 years, demonstrates high rates of self-described religiosity, church attendance and frequency of prayer. Using these criteria, women and racial/ethnic minority caregivers are the most religious. In a series of multivariate analyses, we found strong evidence to suggest that there is an expansion of care-related stressors leading to depression in this sample. Religiosity, as measured here, appears to be largely unrelated to stress and stress expansion. We found no evidence to suggest that it moderates stress expansion. However, these data do suggest that one stressor--feelings of role overload--is correlated with greater levels of self-perceived religiosity, which among caregivers who have health problems of their own is associated with greater depressive symptomatology. Thus, for a sub-sample of these caregivers, we find weak evidence of a mediation effect wherein one subjective, non-organizational dimension of religiosity is a conduit of the harmful effects of stress (rather than a suppressor). Results and data limitations are discussed in relation to better assessing the role of religiosity and spirituality in the experience of the stress process.

  9. Studying social aspects of vegetarianism: a research proposal on the basis of a survey among adult population of two Slovenian biggest cities.

    Science.gov (United States)

    Crnic, Ales

    2013-12-01

    The article discuses the fundamental characteristics of vegetarianism as a heterogeneous and controversial practice, and tries to asses its scope in contemporary Western world. In the central part it presents the main results of the empirical study of vegetarianism and its perceptions on a representative sample of adult residents of the two largest cities in Slovenia, Ljubljana and Maribor. On this basis, the author proposes a more comprehensive design of quantitative and qualitative research on social aspects of vegetarianism and responses to it.

  10. Proposal of a new staging system for intrahepatic cholangiocarcinoma: Analysis of surgical patients from a nationwide survey of the Liver Cancer Study Group of Japan

    Science.gov (United States)

    Sakamoto, Yoshihiro; Matsuyama, Yutaka; Sakamoto, Michiie; Izumi, Namiki; Kadoya, Masumi; Kaneko, Shuichi; Ku, Yonson; Kudo, Masatoshi; Takayama, Tadatoshi; Nakashima, Osamu

    2016-01-01

    BACKGROUND In the current American Joint Committee on Cancer/International Union Against Cancer staging system (seventh edition) for intrahepatic cholangiocarcinoma (ICC), tumor size was excluded, and periductal invasion was added as a new tumor classification‐defining factor. The objective of the current report was to propose a new staging system for ICC that would be better for stratifying the survival of patients based on data from the nationwide Liver Cancer Study Group of Japan database. METHODS Of 756 patients who underwent surgical resection for ICC between 2000 and 2005, multivariate analyses of the clinicopathologic factors of 419 patients who had complete data sets were performed to elucidate relevant factors for inclusion in a new tumor classification and staging system. RESULTS Overall survival data were best stratified using a cutoff value of 2 cm using a minimal P value approach to discriminate patient survival. The 5‐year survival rate of 15 patients who had ICC measuring ≤2 cm in greatest dimension without lymph node metastasis or vascular invasion was 100%, and this cohort was defined as T1. Multivariate analysis of prognostic factors for 267 patients with lymph node‐negative and metastasis‐negative (N0M0) disease indicated that the number of tumors, the presence arterial invasion, and the presence major biliary invasion were independent and significant prognostic factors. The proposed new system, which included tumor number, tumor size, arterial invasion, and major biliary invasion for tumor classification, provided good stratification of overall patient survival according to disease stage. Macroscopic periductal invasion was associated with major biliary invasion and an inferior prognosis. CONCLUSIONS The proposed new staging system, which includes a tumor cutoff size of 2 cm and major biliary invasion, may be useful for assigning patients to surgery. Cancer 2016;122:61–70. © 2015 The Authors. Cancer published by Wiley

  11. Expansion Compression Contacts for Thermoelectric Legs

    Science.gov (United States)

    Sakamoto, Jeffrey

    2009-01-01

    In a proposed alternative to previous approaches to making hot-shoe contacts to the legs of thermoelectric devices, one relies on differential thermal expansion to increase contact pressures for the purpose of reducing the electrical resistances of contacts as temperatures increase. The proposed approach is particularly applicable to thermoelectric devices containing p-type (positive-charge-carrier) legs made of a Zintl compound (specifically, Yb14MnSb11) and n-type (negative charge-carrier) legs made of SiGe. This combination of thermoelectric materials has been selected for further development, primarily on the basis of projected thermoelectric performance. However, it is problematic to integrate, into a practical thermoelectric device, legs made of these materials along with a metal or semiconductor hot shoe that is required to be in thermal and electrical contact with the legs. This is partly because of the thermal-expansion mismatch of these materials: The coefficient of thermal expansion (CTE) of SiGe is 4.5 x 10(exp -6) C (exp -1), while the CTE of Yb14MnSb11 is 20 x 10(exp -6) C(exp -1). Simply joining a Yb14MnSb11 and a SiGe leg to a common hot shoe could be expected to result in significant thermal stresses in either or both legs during operation. Heretofore, such thermal stresses have been regarded as disadvantageous. In the proposed approach, stresses resulting from the CTE mismatch would be turned to advantage.

  12. Conformal expansions and renormalons

    CERN Document Server

    Gardi, E; Gardi, Einan; Grunberg, Georges

    2001-01-01

    The large-order behaviour of QCD is dominated by renormalons. On the other hand renormalons do not occur in conformal theories, such as the one describing the infrared fixed-point of QCD at small beta_0 (the Banks--Zaks limit). Since the fixed-point has a perturbative realization, all-order perturbative relations exist between the conformal coefficients, which are renormalon-free, and the standard perturbative coefficients, which contain renormalons. Therefore, an explicit cancellation of renormalons should occur in these relations. The absence of renormalons in the conformal limit can thus be seen as a constraint on the structure of the QCD perturbative expansion. We show that the conformal constraint is non-trivial: a generic model for the large-order behaviour violates it. We also analyse a specific example, based on a renormalon-type integral over the two-loop running-coupling, where the required cancellation does occur.

  13. Optical imaging. Expansion microscopy.

    Science.gov (United States)

    Chen, Fei; Tillberg, Paul W; Boyden, Edward S

    2015-01-30

    In optical microscopy, fine structural details are resolved by using refraction to magnify images of a specimen. We discovered that by synthesizing a swellable polymer network within a specimen, it can be physically expanded, resulting in physical magnification. By covalently anchoring specific labels located within the specimen directly to the polymer network, labels spaced closer than the optical diffraction limit can be isotropically separated and optically resolved, a process we call expansion microscopy (ExM). Thus, this process can be used to perform scalable superresolution microscopy with diffraction-limited microscopes. We demonstrate ExM with apparent ~70-nanometer lateral resolution in both cultured cells and brain tissue, performing three-color superresolution imaging of ~10(7) cubic micrometers of the mouse hippocampus with a conventional confocal microscope.

  14. Asymptotic expansions for high-contrast elliptic equations

    KAUST Repository

    Calo, Victor M.

    2014-03-01

    In this paper, we present a high-order expansion for elliptic equations in high-contrast media. The background conductivity is taken to be one and we assume the medium contains high (or low) conductivity inclusions. We derive an asymptotic expansion with respect to the contrast and provide a procedure to compute the terms in the expansion. The computation of the expansion does not depend on the contrast which is important for simulations. The latter allows avoiding increased mesh resolution around high conductivity features. This work is partly motivated by our earlier work in [Domain decomposition preconditioners for multiscale flows in high-contrast media, Multiscale Model Simul. 8 (2010) 1461-1483] where we design efficient numerical procedures for solving high-contrast problems. These multiscale approaches require local solutions and our proposed high-order expansion can be used to approximate these local solutions inexpensively. In the case of a large-number of inclusions, the proposed analysis can help to design localization techniques for computing the terms in the expansion. In the paper, we present a rigorous analysis of the proposed high-order expansion and estimate the remainder of it. We consider both high-and low-conductivity inclusions. © 2014 World Scientific Publishing Company.

  15. Transmission network expansion planning under deliberate outages

    Energy Technology Data Exchange (ETDEWEB)

    Alguacil, Natalia; Carrion, Miguel; Arroyo, Jose Manuel [E.T.S. de Ingenieros Industriales, Universidad de Castilla - La Mancha, Campus Universitario s/n, 13071 Ciudad Real (Spain)

    2009-10-15

    The reasons why the transmission network is a potentially attractive target for deliberate outages are twofold: (i) its crucial importance as a critical infrastructure for the society welfare, and (ii) its high level of vulnerability due to the current operation close to its static and dynamic limits. This new context where destructive agents come into play has been recognized by several agencies in Europe and North America, and various initiatives have been launched worldwide in order to assess and mitigate the vulnerability of transmission. Within this framework, this paper proposes the reinforcement and expansion of the transmission network as a way of mitigating the impact of increasingly plausible deliberate outages. The network planner selects the new lines to be built accounting not only for economic issues, as traditionally done, but also for the vulnerability of the transmission network against a set of credible intentional outages. The resulting vulnerability- and economic-constrained transmission expansion planning problem is formulated as a mixed-integer linear program. A number of case studies numerically illustrate the tradeoff between economic- and vulnerability-related issues and its impact on the expansion plans. In addition, we compare the results with those achieved by a traditional expansion planning model based on cost minimization. (author)

  16. MAP-based infrared image expansion

    Institute of Scientific and Technical Information of China (English)

    Nan Zhang; Weiqi Jin; Binghua Su; Yangyang Liu; Hua Chen

    2005-01-01

    @@ Image expansion plays a very important role in image analysis. Common methods of image expansion, such as the zero-order hold method, may generate a visual mosaic to the expanded image, linear and cubic spline interpolation may blur the image data at peripheral regions. Since infrared images have the characteristics of low contrast and low signal-to-noise ratio (SNR), the expanded images derived from common methods are not satisfactory. As shown in the analysis of the course from images with low resolution to those with high resolution, the expansion of image is found to be an ill-posed inverse problem. An image interpolation algorithm based on MAP estimation under Bayesian framework is proposed in this paper,which can effectively preserve the discontinuities in the original image. Experimental results demonstrate that the expanded images by this method are visually and quantitatively (analyzed by using the criteria of mean squared error (MSE) and mean absolute error (MAE)) superior to the images expanded by common methods of linear interpolation. Even in expansion of infrared images, this method can also give good results. An analysis about choosing regularization parameter α in this algorithm is given.

  17. Burial Ground Expansion Hydrogeologic Characterization

    Energy Technology Data Exchange (ETDEWEB)

    Gaughan , T.F.

    1999-02-26

    Sirrine Environmental Consultants provided technical oversight of the installation of eighteen groundwater monitoring wells and six exploratory borings around the location of the Burial Ground Expansion.

  18. 欠发达地区农民创业扩张意愿分析--基于江西省的调查数据%Analysis on Expansion Willingness of Farmer Entrepreneurs in the Underdeveloped Areas--Based on the Survey in Jiangxi Province

    Institute of Scientific and Technical Information of China (English)

    朱红根; 康兰媛

    2013-01-01

    Based on 1080 survey data of farmer entrepreneurs in Jiangxi Province,this paper analyzes the factors which affect expansion willingness of farmer entrepreneurs by using interactive analysis and binary Logistic model. The results show that among the farmers’individual characteristics,age,marital status,skill condition and risk attitude have important influences on expansion willingness of farmer entrepreneurs;in the social capital, good relations with the state-owned banks or govern-ment agencies can significantly promote expansion willingness, and relationships with governmental high-ranking is a major factor,besides,the impact of participating in social activities is significant.%文章利用江西1080份农民创业的调查数据,分别运用交互分析和二元Logistic模型分析了影响农民创业扩张意愿的因素,结果表明:在农民个体特征中,年龄、婚姻状况、技能状况以及风险态度等因素对农民创业扩张意愿有重要影响;在社会资本中,与国有银行或政府机构的良好关系能显著促进农民创业扩张意愿,与政府高层关系的好坏是影响农民创业扩张意愿的重要因素,经常参加社会活动对农民创业扩张意愿有显著影响。

  19. Nationwide survey of radiation exposure during pediatric computed tomography examinations and proposal of age-based diagnostic reference levels for Japan

    Energy Technology Data Exchange (ETDEWEB)

    Takei, Yasutaka [Kanazawa University, Department of Quantum Medical Technology, Division of Health Sciences, Graduate School of Medical Science, Kanazawa, Ishikawa (Japan); Miyazaki, Osamu [National Center for Child Health and Development, Department of Radiology, Tokyo (Japan); Matsubara, Kosuke; Koshida, Kichiro [Kanazawa University, Department of Quantum Medical Technology, Faculty of Health Sciences, Ishikawa (Japan); Shimada, Yoshiya; Akahane, Keiichi [National Institute of Radiological Sciences, Medical Exposure Research Project, Chiba (Japan); Muramatsu, Yoshihisa [National Cancer Center Hospital East, Department of Radiology, Chiba (Japan); Fujii, Keisuke [Nagoya University, Radiological Technology, Graduate School of Medicine, Aichi (Japan); Suzuki, Shoichi [Fujita Health University, Faculty of Radiological Technology, School of Health Sciences, Aichi (Japan)

    2016-02-15

    Diagnostic reference levels (DRLs) have not been established in Japan. To propose DRLs for CT of the head, chest and abdomen for three pediatric age groups. We sent a nationwide questionnaire by post to 339 facilities. Questions focused on pediatric CT technology, exposure parameters, CT protocols, and radiation doses for age groups <1 year, 1-5 years, and 6-10 years. For the three age groups in the 196 facilities that responded, the 75th percentile values of volume CT dose index based on a 16-cm phantom (CTDI{sub vol} 16 [mGy]) for head, chest and abdominal CT were for infants 39.1, 11.1 and 12.0, respectively; for 1-to 5-year-olds 46.9, 14.3 and 16.7, respectively; and for 6-to 10-year-olds 67.7, 15.0 and 17.0, respectively. The corresponding dose-length products (DLP 16 [mGy·cm]) for head, chest and abdominal CT were for infants 526.1, 209.1 and 261.5, respectively; for 1-to 5-year-olds 665.5, 296.0 and 430.8, respectively; and for 6-to 10-year-olds 847.9, 413.0 and 532.2, respectively. The majority of CTDI{sub vol} 16 and DLP 16 values for the head were higher than DRLs reported from other countries. For risk reduction, it is necessary to establish DRLs for pediatric CT in Japan. (orig.)

  20. Lattice harmonics expansion revisited

    Science.gov (United States)

    Kontrym-Sznajd, G.; Holas, A.

    2017-04-01

    The main subject of the work is to provide the most effective way of determining the expansion of some quantities into orthogonal polynomials, when these quantities are known only along some limited number of sampling directions. By comparing the commonly used Houston method with the method based on the orthogonality relation, some relationships, which define the applicability and correctness of these methods, are demonstrated. They are verified for various sets of sampling directions applicable for expanding quantities having the full symmetry of the Brillouin zone of cubic and non-cubic lattices. All results clearly show that the Houston method is always better than the orthogonality-relation one. For the cubic symmetry we present a few sets of special directions (SDs) showing how their construction and, next, a proper application depend on the choice of various sets of lattice harmonics. SDs are important mainly for experimentalists who want to reconstruct anisotropic quantities from their measurements, performed at a limited number of sampling directions.

  1. A new approach to query expansion in information retrieval

    Institute of Scientific and Technical Information of China (English)

    Li Weijiang; Zhao Tiejun; Wang Xiangang

    2008-01-01

    To eliminate the mismatch between words of relevant documents and user's query and more serious negative effects it has on the performance of information retrieval,a method of query expansion on the basis of new terms co-occurrence representation was put forward by analyzing the process of producing query. The expansion terms were selected according to their correlation to the whole query. At the same time, the position information between terms were considered. The experimental result on test retrieval conference (TREC) data collection shows that the method proposed in the paper has made an improvement of 5%~19% all the time than the language modeling method without expansion. Compared to the popular approach of query expansion, pseudo feedback, the precision of the proposed method is competitive.

  2. On genus expansion of superpolynomials

    CERN Document Server

    Mironov, A; Sleptsov, A; Smirnov, A

    2013-01-01

    Recently it was shown that the (Ooguri-Vafa) generating function of HOMFLY polynomials is the Hurwitz partition function, i.e. that the dependence of the HOMFLY polynomials on representation is naturally captured by symmetric group characters (cut-and-join eigenvalues). The genus expansion and expansion through Vassiliev invariants explicitly demonstrate this phenomenon. In the present letter we claim that the superpolynomials are not functions of such a type: symmetric group characters do not provide an adequate linear basis for their expansions. Deformation to superpolynomials is, however, straightforward in the multiplicative basis:the Casimir operators are beta-deformed to Hamiltonians of the Calogero-Moser-Sutherland system. Applying this trick to the genus and Vassiliev expansions, we observe that the deformation is rather straightforward only for the thin knots. Beyond this family additional algebraically independent terms appear in the Vassiliev and genus expansions. This can suggest that the superpol...

  3. Locally-smeared operator product expansions

    Energy Technology Data Exchange (ETDEWEB)

    Monahan, Christopher; Orginos, Kostantinos

    2014-12-01

    We propose a "locally-smeared Operator Product Expansion" (sOPE) to decompose non-local operators in terms of a basis of locally-smeared operators. The sOPE formally connects nonperturbative matrix elements of smeared degrees of freedom, determined numerically using the gradient flow, to non-local operators in the continuum. The nonperturbative matrix elements do not suffer from power-divergent mixing on the lattice, provided the smearing scale is kept fixed in the continuum limit. The presence of this smearing scale prevents a simple connection to the standard operator product expansion and therefore requires the construction of a two-scale formalism. We demonstrate the feasibility of our approach using the example of real scalar field theory.

  4. Can confidence indicators forecast the probability of expansion in Croatia?

    Directory of Open Access Journals (Sweden)

    Mirjana Čižmešija

    2016-04-01

    Full Text Available The aim of this paper is to investigate how reliable are confidence indicators in forecasting the probability of expansion. We consider three Croatian Business Survey indicators: the Industrial Confidence Indicator (ICI, the Construction Confidence Indicator (BCI and the Retail Trade Confidence Indicator (RTCI. The quarterly data, used in the research, covered the periods from 1999/Q1 to 2014/Q1. Empirical analysis consists of two parts. The non-parametric Bry-Boschan algorithm is used for distinguishing periods of expansion from the period of recession in the Croatian economy. Then, various nonlinear probit models were estimated. The models differ with respect to the regressors (confidence indicators and the time lags. The positive signs of estimated parameters suggest that the probability of expansion increases with an increase in Confidence Indicators. Based on the obtained results, the conclusion is that ICI is the most powerful predictor of the probability of expansion in Croatia.

  5. Drivers of the international expansion of emerging-market multinationals

    Directory of Open Access Journals (Sweden)

    D. Boșcor

    2013-06-01

    Full Text Available The purpose of the present paper is to analyze the drivers of the international expansion of emerging market multinationals and the strategies applied by these companies in other emerging and developed markets. The paper applies a conceptual approach combined with analyses of statistics and secondary material and presents the company and the country specific advantages. The proposals for the Romanian companies and institutions are based on the comparison between the drivers of expansion in the BRIC countries.

  6. Optimization and capacity expansion of a water distribution system

    Science.gov (United States)

    Hsu, Nien-Sheng; Cheng, Wei-Chen; Cheng, Wen-Ming; Wei, Chih-Chiang; Yeh, William W.-G.

    2008-05-01

    This paper develops an iterative procedure for capacity expansion studies for water distribution systems. We propose a methodology to analyze an existing water distribution system and identify the potential bottlenecks in the system. Based on the results, capacity expansion alternatives are proposed and evaluated for improving the efficiency of water supply. The methodology includes a network flow based optimization model, four evaluation indices, and a series of evaluation steps. We first use a directed graph to configure the water distribution system into a network. The network flow based model optimizes the water distribution in the system so that different expansion alternatives can be evaluated on a comparable basis. This model lends itself to linear programming (LP) and can be easily solved by a standard LP code. The results from the evaluation tool help to identify the bottlenecks in the water distribution system and provide capacity expansion alternatives. A useful complementary tool for decision making is composed of a series of evaluation steps with the bottleneck findings, capacity expansion alternatives, and the evaluation of results. We apply the proposed methodology to the Tou-Qian River Basin, located in the northern region of Taiwan, to demonstrate its applicability in optimization and capacity expansion studies.

  7. 2011 USGS Topographic LiDAR: Suwannee River Expansion

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — USGS Task Order No. G10PD00236 USGS Contract No. G10PC00093 The Light Detection and Ranging (LiDAR) dataset is a survey of the Suwannee River Expansion in...

  8. Thesis Proposal

    DEFF Research Database (Denmark)

    Sloth, Erik

    2010-01-01

    Strukturen i Thesis proposal er følgende: Først præsenteres mine konkrete empiriske forskningsprojekter som skal munde ud i afhandlingens artikler. Jeg præsenterer herefter de teoretiske overvejelser omkring oplevelsesbegrebet og forbrugerkulturteori som danner baggrund for at jeg er nået frem til...

  9. Thermal Expansion of Polyurethane Foam

    Science.gov (United States)

    Lerch, Bradley A.; Sullivan, Roy M.

    2006-01-01

    Closed cell foams are often used for thermal insulation. In the case of the Space Shuttle, the External Tank uses several thermal protection systems to maintain the temperature of the cryogenic fuels. A few of these systems are polyurethane, closed cell foams. In an attempt to better understand the foam behavior on the tank, we are in the process of developing and improving thermal-mechanical models for the foams. These models will start at the microstructural level and progress to the overall structural behavior of the foams on the tank. One of the key properties for model characterization and verification is thermal expansion. Since the foam is not a material, but a structure, the modeling of the expansion is complex. It is also exacerbated by the anisoptropy of the material. During the spraying and foaming process, the cells become elongated in the rise direction and this imparts different properties in the rise direction than in the transverse directions. Our approach is to treat the foam as a two part structure consisting of the polymeric cell structure and the gas inside the cells. The polymeric skeleton has a thermal expansion of its own which is derived from the basic polymer chemistry. However, a major contributor to the thermal expansion is the volume change associated with the gas inside of the closed cells. As this gas expands it exerts pressure on the cell walls and changes the shape and size of the cells. The amount that this occurs depends on the elastic and viscoplastic properties of the polymer skeleton. The more compliant the polymeric skeleton, the more influence the gas pressure has on the expansion. An additional influence on the expansion process is that the polymeric skeleton begins to breakdown at elevated temperatures and releases additional gas species into the cell interiors, adding to the gas pressure. The fact that this is such a complex process makes thermal expansion ideal for testing the models. This report focuses on the thermal

  10. Proposal of a survey of radiation protection procedures during breast feeding;Proposta de um levantamento do estado da arte da radioprotecao para lactantes submetidas a procedimento com radiofarmacos e respectivos bebes

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Liliane dos; Oliveira, Silvia M. Velasques de [Instituto de Radioprotecao e Dosimetria (IRD/CNEN-RJ), Rio de Janeiro, RJ (Brazil). Servico de Monitoracao Individual Interna

    2009-07-01

    Contamination can occur by breast milk ingestion involving mothers subjected to diagnostic procedures or treatment with radiopharmaceuticals, which can reach high concentrations in milk causing significant absorbed doses to the children organs. Besides internal dose, close contact between the baby and his mother give rise to external exposures. In Brazil, 7% of diagnostic procedures use {sup 131}I or {sup 123}I for thyroid imaging and 84% of these were hold by women. For {sup 131}I, {sup 67}Ga and {sup 201}Tl, is recommended breast feeding cessation. The present work proposes a survey of the state of the art of radiation protection to breast feeding infants. It was planned interviews with nuclear medicine staff applying a questionnaire in order to assess specific procedures to women in reproductive age. This is 'on progress work'. (author)

  11. 78 FR 26056 - Waterway Suitability Assessment for Expansion of Liquefied Gas Terminals; Nederland, TX

    Science.gov (United States)

    2013-05-03

    ... SECURITY Coast Guard Waterway Suitability Assessment for Expansion of Liquefied Gas Terminals; Nederland... proposed expansion of its Liquefied Hazardous Gas (LHG) facility in Nederland, Texas, and increased LHG... solicit public comments on the proposed increase in LHG marine traffic in Nederland, Texas....

  12. Impacts of large-scale expansion of biofuels on global poverty and income distribution

    OpenAIRE

    2012-01-01

    This paper analyzes the impact of large-scale expansion of biofuels on the global income distribution and poverty. A global computable general equilibrium model is used to simulate the effects of the expansion of biofuels on resource allocation, commodity prices, factor prices and household income. A second model based on world-wide household surveys uses these results to calculate the impacts on poverty and global income inequality. The study finds that the large-scale expansion of biofuels ...

  13. The ELG target selection with the BOSS survey

    CERN Document Server

    Escoffier, S; Ealet, A; Kneib, J -P; Zoubian, J; Lamareille, F

    2013-01-01

    The Baryon Acoustic Oscillation (BAO) feature in the power spectrum of galaxies can be used as a standard ruler to probe the accelerated expansion of the Universe. In this paper, we study several galaxy selection schemes aiming at building an emission-line galaxy (ELG) sample in the redshift range $0.6 < z < 1.7$, that would be suitable for future BAO studies using the Baryonic Oscillation Spectroscopic Survey (BOSS) spectrograph on the Sloan Digital Sky Survey (SDSS) telescope. We explore two different color selections using both the SDSS and the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS) photometry in the $u, g, r, i$ bands and evaluate their performance for selecting bright ELG. This study confirms the feasibility of massive ELG surveys using the BOSS spectrographs on the SDSS telescope for a BAO detection at redshift $z\\sim1$, in particular for the proposed eBOSS experiment.

  14. Electric Grid Expansion Planning with High Levels of Variable Generation

    Energy Technology Data Exchange (ETDEWEB)

    Hadley, Stanton W. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); You, Shutang [Univ. of Tennessee, Knoxville, TN (United States); Shankar, Mallikarjun [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Liu, Yilu [Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2016-02-01

    Renewables are taking a large proportion of generation capacity in U.S. power grids. As their randomness has increasing influence on power system operation, it is necessary to consider their impact on system expansion planning. To this end, this project studies the generation and transmission expansion co-optimization problem of the US Eastern Interconnection (EI) power grid with a high wind power penetration rate. In this project, the generation and transmission expansion problem for the EI system is modeled as a mixed-integer programming (MIP) problem. This study analyzed a time series creation method to capture the diversity of load and wind power across balancing regions in the EI system. The obtained time series can be easily introduced into the MIP co-optimization problem and then solved robustly through available MIP solvers. Simulation results show that the proposed time series generation method and the expansion co-optimization model and can improve the expansion result significantly after considering the diversity of wind and load across EI regions. The improved expansion plan that combines generation and transmission will aid system planners and policy makers to maximize the social welfare. This study shows that modelling load and wind variations and diversities across balancing regions will produce significantly different expansion result compared with former studies. For example, if wind is modeled in more details (by increasing the number of wind output levels) so that more wind blocks are considered in expansion planning, transmission expansion will be larger and the expansion timing will be earlier. Regarding generation expansion, more wind scenarios will slightly reduce wind generation expansion in the EI system and increase the expansion of other generation such as gas. Also, adopting detailed wind scenarios will reveal that it may be uneconomic to expand transmission networks for transmitting a large amount of wind power through a long distance

  15. Proposed New Madrid NWR Contaminant Survey

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The area studied in this report is near New Madrid in southeast Missouri. This area consists of the St. John's Bayou, 8,500 acres and Eagle's Nest area, 3,500 acres....

  16. Gradient expansion for anisotropic hydrodynamics

    Science.gov (United States)

    Florkowski, Wojciech; Ryblewski, Radoslaw; Spaliński, Michał

    2016-12-01

    We compute the gradient expansion for anisotropic hydrodynamics. The results are compared with the corresponding expansion of the underlying kinetic-theory model with the collision term treated in the relaxation time approximation. We find that a recent formulation of anisotropic hydrodynamics based on an anisotropic matching principle yields the first three terms of the gradient expansion in agreement with those obtained for the kinetic theory. This gives further support for this particular hydrodynamic model as a good approximation of the kinetic-theory approach. We further find that the gradient expansion of anisotropic hydrodynamics is an asymptotic series, and the singularities of the analytic continuation of its Borel transform indicate the presence of nonhydrodynamic modes.

  17. Gradient expansion for anisotropic hydrodynamics

    CERN Document Server

    Florkowski, Wojciech; Spaliński, Michał

    2016-01-01

    We compute the gradient expansion for anisotropic hydrodynamics. The results are compared with the corresponding expansion of the underlying kinetic-theory model with the collision term treated in the relaxation time approximation. We find that a recent formulation of anisotropic hydrodynamics based on an anisotropic matching principle yields the first three terms of the gradient expansion in agreement with those obtained for the kinetic theory. This gives further support for this particular hydrodynamic model as a good approximation of the kinetic-theory approach. We further find that the gradient expansion of anisotropic hydrodynamics is an asymptotic series, and the singularities of the analytic continuation of its Borel transform indicate the presence of non-hydrodynamic modes.

  18. Anisotropic matching principle for the hydrodynamic expansion

    Science.gov (United States)

    Tinti, Leonardo

    2016-10-01

    Following the recent success of anisotropic hydrodynamics, I propose here a new, general prescription for the hydrodynamic expansion around an anisotropic background. The anisotropic distribution fixes exactly the complete energy-momentum tensor, just like the effective temperature fixes the proper energy density in the ordinary expansion around local equilibrium. This means that momentum anisotropies are already included at the leading order, allowing for large pressure anisotropies without the need of a next-to-leading-order treatment. The first moment of the Boltzmann equation (local four-momentum conservation) provides the time evolution of the proper energy density and the four-velocity. Differently from previous prescriptions, the dynamic equations for the pressure corrections are not derived from the zeroth or second moment of the Boltzmann equation, but they are taken directly from the exact evolution given by the Boltzmann equation. As known in the literature, the exact evolution of the pressure corrections involves higher moments of the Boltzmann distribution, which cannot be fixed by the anisotropic distribution alone. Neglecting the next-to-leading-order contributions corresponds to an approximation, which depends on the chosen form of the anisotropic distribution. I check the the effectiveness of the leading-order expansion around the generalized Romatschke-Stricklad distribution, comparing with the exact solution of the Boltzmann equation in the Bjorken limit with the collisional kernel treated in the relaxation-time approximation, finding an unprecedented agreement.

  19. Does Higher Education Expansion Reduce Credentialism and Gender Discrimination in Education?

    Science.gov (United States)

    Lin, Ching-Yuan; Lin, Chun-Hung A.

    2012-01-01

    This paper investigates the effects of higher education expansion on the phenomena of credentialism and gender discrimination in education. Using the survey data of Family Income and Expenditure by DGBAS, Taiwan from 1980 to 2009, we examine the time path of the effect of higher education expansion on household expenditures for children's…

  20. Strategic Complexity and Global Expansion

    DEFF Research Database (Denmark)

    Oladottir, Asta Dis; Hobdari, Bersant; Papanastassiou, Marina

    2012-01-01

    The purpose of this paper is to analyse the determinants of global expansion strategies of newcomer Multinational Corporations (MNCs) by focusing on Iceland, Israel and Ireland. We argue that newcomer MNCs from small open economies pursue complex global expansion strategies (CGES). We distinguish....... The empirical evidence suggests that newcomer MNCs move away from simplistic dualities in the formulation of their strategic choices towards more complex options as a means of maintaining and enhancing their global competitiveness....

  1. On Large N Expansion of the Sphere Free Energy

    CERN Document Server

    Tarnopolsky, Grigory

    2016-01-01

    We propose formulas for the $1/N$ correction to the sphere free energy of theories with 4-fermion interactions, which are conformal for $d>2$. We also propose a formula for the scalar $O(N)$ model. Expanding these formulas in small $\\epsilon$ near various integer dimensions we find a perfect agreement with results obtained using $\\epsilon$-expansion technique. In $d=3$, the large $N$ results with the $1/N$ correction included are in good agreement with the Pade resummed $\\epsilon$-expansion.

  2. Generation and transmission expansion planning for renewable energy integration

    Energy Technology Data Exchange (ETDEWEB)

    Bent, Russell W [Los Alamos National Laboratory; Berscheid, Alan [Los Alamos National Laboratory; Toole, G. Loren [Los Alamos National Laboratory

    2010-11-30

    In recent years the expansion planning problem has become increasingly complex. As expansion planning (sometimes called composite or integrated resource planning) is a non-linear and non-convex optimization problem, researchers have traditionally focused on approximate models of power flows to solve the problem. The problem has also been split into generation expansion planning (GEP) and transmission network expansion planning (TNEP) to improve computational tractability. Until recently these approximations have produced results that are straight-forward to combine and adapt to the more complex and complete problem. However, the power grid is evolving towards a state where the adaptations are no longer easy (e.g. large amounts of limited control, renewable generation, comparable generation and transmission construction costs) and necessitates new approaches. Recent work on deterministic Discrepancy Bounded Local Search (DBLS) has shown it to be quite effective in addressing the TNEP. In this paper, we propose a generalization of DBLS to handle simultaneous generation and transmission planning.

  3. Expansion coding: Achieving the capacity of an AEN channel

    CERN Document Server

    Koyluoglu, O Ozan; Si, Hongbo; Vishwanath, Sriram

    2012-01-01

    A general method of coding over expansions is proposed, which allows one to reduce the highly non-trivial problem of coding over continuous channels to a much simpler discrete ones. More specifically, the focus is on the additive exponential noise (AEN) channel, for which the (binary) expansion of the (exponential) noise random variable is considered. It is shown that each of the random variables in the expansion corresponds to independent Bernoulli random variables. Thus, each of the expansion levels (of the underlying channel) corresponds to a binary symmetric channel (BSC), and the coding problem is reduced to coding over these parallel channels while satisfying the channel input constraint. This optimization formulation is stated as the achievable rate result, for which a specific choice of input distribution is shown to achieve a rate which is arbitrarily close to the channel capacity in the high SNR regime. Remarkably, the scheme allows for low-complexity capacity-achieving codes for AEN channels, using...

  4. GENERALIZATION OF THE SHANNON EXPANSION FOR INCOMPLETELY SPECIFIED FUNCTIONS: THEORY AND APPLICATION

    Directory of Open Access Journals (Sweden)

    A. A. Prikhozhy

    2013-01-01

    Full Text Available The well known Shannon expansion is not applicable to incompletely specified functions. We propose a theory that merges Boolean and partial algebras and provides creation of new representations and expansions of partially specified functions. A powerful property of the expansions is the reduction of definiteness level of expansion products. This is a source of enlargement of possibilities for synthesis, parallelization and optimization of completely and incompletely specified logical software/hardware systems. A result of proposed theory is a new type of decision diagram. It is shown on the parallelization of adders that the throughput of the system grows rapidly while the system complexity grows slowly.

  5. Multiple pathways of commodity crop expansion in tropical forest landscapes

    Science.gov (United States)

    Meyfroidt, Patrick; Carlson, Kimberly M.; Fagan, Matthew E.; Gutiérrez-Vélez, Victor H.; Macedo, Marcia N.; Curran, Lisa M.; DeFries, Ruth S.; Dyer, George A.; Gibbs, Holly K.; Lambin, Eric F.; Morton, Douglas C.; Robiglio, Valentina

    2014-07-01

    Commodity crop expansion, for both global and domestic urban markets, follows multiple land change pathways entailing direct and indirect deforestation, and results in various social and environmental impacts. Here we compare six published case studies of rapid commodity crop expansion within forested tropical regions. Across cases, between 1.7% and 89.5% of new commodity cropland was sourced from forestlands. Four main factors controlled pathways of commodity crop expansion: (i) the availability of suitable forestland, which is determined by forest area, agroecological or accessibility constraints, and land use policies, (ii) economic and technical characteristics of agricultural systems, (iii) differences in constraints and strategies between small-scale and large-scale actors, and (iv) variable costs and benefits of forest clearing. When remaining forests were unsuitable for agriculture and/or policies restricted forest encroachment, a larger share of commodity crop expansion occurred by conversion of existing agricultural lands, and land use displacement was smaller. Expansion strategies of large-scale actors emerge from context-specific balances between the search for suitable lands; transaction costs or conflicts associated with expanding into forests or other state-owned lands versus smallholder lands; net benefits of forest clearing; and greater access to infrastructure in already-cleared lands. We propose five hypotheses to be tested in further studies: (i) land availability mediates expansion pathways and the likelihood that land use is displaced to distant, rather than to local places; (ii) use of already-cleared lands is favored when commodity crops require access to infrastructure; (iii) in proportion to total agricultural expansion, large-scale actors generate more clearing of mature forests than smallholders; (iv) property rights and land tenure security influence the actors participating in commodity crop expansion, the form of land use displacement

  6. Early Impacts of the Affordable Care Act on Health Insurance Coverage in Medicaid Expansion and Non-Expansion States.

    Science.gov (United States)

    Courtemanche, Charles; Marton, James; Ukert, Benjamin; Yelowitz, Aaron; Zapata, Daniela

    2017-01-01

    The Affordable Care Act (ACA) aimed to achieve nearly universal health insurance coverage in the United States through a combination of insurance market reforms, mandates, subsidies, health insurance exchanges, and Medicaid expansions, most of which took effect in 2014. This paper estimates the causal effects of the ACA on health insurance coverage in 2014 using data from the American Community Survey. We utilize difference-in-difference-in-differences models that exploit cross-sectional variation in the intensity of treatment arising from state participation in the Medicaid expansion and local area pre-ACA uninsured rates. This strategy allows us to identify the effects of the ACA in both Medicaid expansion and non-expansion states. Our preferred specification suggests that, at the average pre-treatment uninsured rate, the full ACA increased the proportion of residents with insurance by 5.9 percentage points compared to 2.8 percentage points in states that did not expand Medicaid. Private insurance expansions from the ACA were due to increases in both employer-provided and non-group coverage. The coverage gains from the full ACA were largest for those without a college degree, non-whites, young adults, unmarried individuals, and those without children in the home. We find no evidence that the Medicaid expansion crowded out private coverage.

  7. Immodest Proposals

    DEFF Research Database (Denmark)

    Bardzell, Jeffrey; Bardzell, Shaowen; Hansen, Lone Koefoed

    2015-01-01

    This paper offers theoretical support for research through design (RtD) by arguing that to legitimize and make use of research through design as research, HCI researchers need to explore and clarify how RtD objects contribute to knowledge. One way to pursue this goal is to leverage knowledge...... fiction Menstruation Machine by Sputniko!, the paper explores how design objects coproduce knowledge, by working through complex design problem spaces in non-reductive ways, proposing new connections and distinctions, and embodying design ideas and processes across time and minds.......-producing tactics of the arts and humanities traditions of aesthetics, key among which is a communitywide and ongoing critical analysis of aesthetic objects. Along these lines, we argue that while the intentions of the object’s designer are important and annotations are a good mechanism to articulate them...

  8. Expansion Nets and Expansion Processes of Elementary Net Systems

    Institute of Scientific and Technical Information of China (English)

    曹存根

    1995-01-01

    Occurrence nets are insufficient to precisely describe executions of elementary net systems with contacts.Traditionally,S-complementation is used for removal of contacts from the systems.Although the main behavior and properties of the original elementary net systems are preserved during S-complementation,their topologies may be changed greatly.This paper introduces a new kind of nets-expansion nets-for representing behavior of elementary net systems.As shown in the paper,expansion nets are natural as well as sufficient for describing the precise behavior of elementary net systems with or without contactks.

  9. Reed's Conjecture on hole expansions

    CERN Document Server

    Fouquet, Jean-Luc

    2012-01-01

    In 1998, Reed conjectured that for any graph $G$, $\\chi(G) \\leq \\lceil \\frac{\\omega(G) + \\Delta(G)+1}{2}\\rceil$, where $\\chi(G)$, $\\omega(G)$, and $\\Delta(G)$ respectively denote the chromatic number, the clique number and the maximum degree of $G$. In this paper, we study this conjecture for some {\\em expansions} of graphs, that is graphs obtained with the well known operation {\\em composition} of graphs. We prove that Reed's Conjecture holds for expansions of bipartite graphs, for expansions of odd holes where the minimum chromatic number of the components is even, when some component of the expansion has chromatic number 1 or when a component induces a bipartite graph. Moreover, Reed's Conjecture holds if all components have the same chromatic number, if the components have chromatic number at most 4 and when the odd hole has length 5. Finally, when $G$ is an odd hole expansion, we prove $\\chi(G)\\leq\\lceil\\frac{\\omega(G)+\\Delta(G)+1}{2}\\rceil+1$.

  10. Transmission network expansion planning with simulation optimization

    Energy Technology Data Exchange (ETDEWEB)

    Bent, Russell W [Los Alamos National Laboratory; Berscheid, Alan [Los Alamos National Laboratory; Toole, G. Loren [Los Alamos National Laboratory

    2010-01-01

    Within the electric power literatW''e the transmi ssion expansion planning problem (TNEP) refers to the problem of how to upgrade an electric power network to meet future demands. As this problem is a complex, non-linear, and non-convex optimization problem, researchers have traditionally focused on approximate models. Often, their approaches are tightly coupled to the approximation choice. Until recently, these approximations have produced results that are straight-forward to adapt to the more complex (real) problem. However, the power grid is evolving towards a state where the adaptations are no longer easy (i.e. large amounts of limited control, renewable generation) that necessitates new optimization techniques. In this paper, we propose a generalization of the powerful Limited Discrepancy Search (LDS) that encapsulates the complexity in a black box that may be queJied for information about the quality of a proposed expansion. This allows the development of a new optimization algOlitlun that is independent of the underlying power model.

  11. Uma proposta de levantamento de dados para a assistência à família e ao cuidador de lesados medulares Proposal of basis survey to the assistance family and to the spinal cord injuried patient's caregiver

    Directory of Open Access Journals (Sweden)

    Ana Cristina Mancussi e Faro

    1999-12-01

    Full Text Available Este trabalho propõe um levantamento de dados para a assistência à família e cuidador, por acreditar na necessidade de participação desta no tratamento, buscando compreender e compartilhar a situação de doença e /ou deficiência. Objetivou-se identificar o grau de parentesco e o gênero das pessoas que acompanharam o lesado medular em consultas de enfermagem, bem como discutir a necessidade de levantamento de dados para a assistência à família e cuidador. Foram realizadas consultas de enfermagem, em ambulatório, ao lesado medular e ao seu familiar, totalizando 36 pacientes. Deste total 26 eram do sexo masculino e 10 do sexo feminino. Constatou-se que os homens com lesão medular, na sua maioria (21 estavam acompanhados de parentes sobretudo mãe e esposa, enquanto que as mulheres com lesão medular, também a maioria (7 estavam acompanhadas de parentes de proximidade diversificada. No que se refere ao levantamento de dados, pode-se afirmar a sua relevância, buscando contextualizar o suporte familiar e identificar os cuidadores.This study proposes a basis survey for assistance to the family and caregivers because we believe there is necessity of family participation on the treatment, trying to understand and share the disease or deficiency situation. We objectified to sketch the relationship degree and the people's gender that accompanied the spinal cord injuried hurted medular patient in nursing consultations and to discuss the necessity of basis survey to the assistance family and to the caregiver. 101 nursing consultations were accomplished, in clinic health, to the spinal cord injuried patient and his/her relative and 36 patients were totalized, from this number 26 (72.22% were male and 10 (27.78%, were female. It was verified that the men with medular lesion, in the greater number (21-80.760/o, were accompanied with his relatives specially mother and wife, while the women with medular lesion, in the greater number too (7

  12. Ecological baseline study of the Yakima Firing Center proposed land acquisition: A status report

    Energy Technology Data Exchange (ETDEWEB)

    Rogers, L.E.; Beedlow, P.A.; Eberhardt, L.E.; Dauble, D.D.; Fitzner, R.E.

    1989-01-01

    This report provides baseline environmental information for the property identified for possible expansion of the Yakima Firing Center. Results from this work provide general descriptions of the animals and major plant communities present. A vegetation map derived from a combination of on-site surveillance and remotely sensed imagery is provided as part of this report. Twenty-seven wildlife species of special interest (protected, sensitive, furbearer, game animal, etc.), and waterfowl, were observed on the proposed expansion area. Bird censuses revealed 13 raptorial species (including four of special interest: bald eagle, golden eagle, osprey, and prairie falcon); five upland game bird species (sage grouse, California quail, chukar, gray partridge, and ring-necked pheasant); common loons (a species proposed for state listing as threatened); and five other species of special interest (sage thrasher, loggerhead shrike, mourning dove, sage sparrow, and long-billed curlew). Estimates of waterfowl abundance are included for the Priest Rapids Pool of the Columbia River. Six small mammal species were captured during this study; one, the sagebrush vole, is a species of special interest. Two large animal species, mule deer and elk, were noted on the site. Five species of furbearing animals were observed (coyote, beaver, raccoon, mink, and striped skunk). Four species of reptiles and one amphibian were noted. Fisheries surveys were conducted to document the presence of gamefish, and sensitive-classified fish and aquatic invertebrates. Rainbow trout were the only fish collected within the boundaries of the proposed northern expansion area. 22 refs., 10 figs., 4 tabs.

  13. Thermal Expansion of Hafnium Carbide

    Science.gov (United States)

    Grisaffe, Salvatore J.

    1960-01-01

    Since hafnium carbide (HfC) has a melting point of 7029 deg. F, it may have many high-temperature applications. A literature search uncovered very little information about the properties of HfC, and so a program was initiated at the Lewis Research Center to determine some of the physical properties of this material. This note presents the results of the thermal expansion investigation. The thermal-expansion measurements were made with a Gaertner dilatation interferometer calibrated to an accuracy of +/- 1 deg. F. This device indicates expansion by the movement of fringes produced by the cancellation and reinforcement of fixed wave-length light rays which are reflected from the surfaces of two parallel quartz glass disks. The test specimens which separate these disks are three small cones, each approximately 0.20 in. high.

  14. Low thermal expansion glass ceramics

    CERN Document Server

    1995-01-01

    This book is one of a series reporting on international research and development activities conducted by the Schott group of companies With the series, Schott aims to provide an overview of its activities for scientists, engineers, and managers from all branches of industry worldwide where glasses and glass ceramics are of interest Each volume begins with a chapter providing a general idea of the current problems, results, and trends relating to the subjects treated This volume describes the fundamental principles, the manufacturing process, and applications of low thermal expansion glass ceramics The composition, structure, and stability of polycrystalline materials having a low thermal expansion are described, and it is shown how low thermal expansion glass ceramics can be manufactured from appropriately chosen glass compositions Examples illustrate the formation of this type of glass ceramic by utilizing normal production processes together with controlled crystallization Thus glass ceramics with thermal c...

  15. Low Thermal Expansion Glass Ceramics

    CERN Document Server

    Bach, Hans

    2005-01-01

    This book appears in the authoritative series reporting the international research and development activities conducted by the Schott group of companies. This series provides an overview of Schott's activities for scientists, engineers, and managers from all branches of industry worldwide in which glasses and glass ceramics are of interest. Each volume begins with a chapter providing a general idea of the current problems, results, and trends relating to the subjects treated. This new extended edition describes the fundamental principles, the manufacturing process, and applications of low thermal expansion glass ceramics. The composition, structure, and stability of polycrystalline materials having a low thermal expansion are described, and it is shown how low thermal expansion glass ceramics can be manufactured from appropriately chosen glass compositions. Examples illustrate the formation of this type of glass ceramic by utilizing normal production processes together with controlled crystallization. Thus g...

  16. Energy efficient perlite expansion process

    Energy Technology Data Exchange (ETDEWEB)

    Jenkins, K.L.

    1982-08-31

    A thermally efficient process for the expansion of perlite ore is described. The inlet port and burner of a perlite expansion chamber (Preferably a vertical expander) are enclosed such that no ambient air can enter the chamber. Air and fuel are metered to the burner with the amount of air being controlled such that the fuel/air premix contains at least enough air to start and maintain minimum combustion, but not enough to provide stoichiometric combustion. At a point immediately above the burner, additional air is metered into an insulated enclosure surrounding the expansion chamber where it is preheated by the heat passing through the chamber walls. This preheated additional air is then circulated back to the burner where it provides the remainder of the air needed for combustion, normally full combustion. Flow of the burner fuel/air premix and the preheated additional air is controlled so as to maintain a long luminous flame throughout a substantial portion of the expansion chamber and also to form a moving laminar layer of air on the inner surface of the expansion chamber. Preferably the burner is a delayed mixing gas burner which materially aids in the generation of the long luminous flame. The long luminous flame and the laminar layer of air at the chamber wall eliminate hot spots in the expansion chamber, result in relatively low and uniform temperature gradients across the chamber, significantly reduce the amount of fuel consumed per unit of perlite expanded, increase the yield of expanded perlite and prevent the formation of a layer of perlite sinter on the walls of the chamber.

  17. Bearing-Mounting Concept Accommodates Thermal Expansion

    Science.gov (United States)

    Nespodzany, Robert; Davis, Toren S.

    1995-01-01

    Pins or splines allow radial expansion without slippage. Design concept for mounting rotary bearing accommodates differential thermal expansion between bearing and any structure(s) to which bearing connected. Prevents buildup of thermal stresses by allowing thermal expansion to occur freely but accommodating expansion in such way not to introduce looseness. Pin-in-slot configuration also maintains concentricity.

  18. Properties of Ettringite Type Expansive Agent

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    By employing different forms and amounts of materials,many kinds of ettringite type expansive agents had been prepared.The relationship between the compositions and properties of expansive agents was analyzed.The design methods of expansive agent have been put forward according to the property requirement of expansive concrete.

  19. 18 CFR 154.309 - Incremental expansions.

    Science.gov (United States)

    2010-04-01

    ... 18 Conservation of Power and Water Resources 1 2010-04-01 2010-04-01 false Incremental expansions... Changes § 154.309 Incremental expansions. (a) For every expansion for which incremental rates are charged... incremental facilities to be rolled-in to the pipeline's rates. For every expansion that has an at-risk...

  20. Caloric Curves and Nuclear Expansion

    CERN Document Server

    Natowitz, J B; Ma, Y; Murray, M; Qin, L; Shlomo, S; Wada, R; Wang, J

    2002-01-01

    Nuclear caloric curves have been analyzed using an expanding Fermi gas hypothesis to extract average nuclear densities. In this approach the observed flattening of the caloric curves reflects progressively increasing expansion with increasing excitation energy. This expansion results in a corresponding decrease in the density and Fermi energy of the excited system. For nuclei of medium to heavy mass apparent densities $~0.3\\rho_0$ are reached at the higher excitation energies. The average densities derived in this manner are in good agreement with those derived using other, more complicated, techniques.

  1. Thermal Expansion of Irradiated Polytetrafluoroethylene

    OpenAIRE

    Subrahmanyam, HN; Subramanyam, SV

    1987-01-01

    The thermal expansion coefficient of gamma-irradiated Polytetrafluoroethylene (PTFE) has been measured in the temperature range 80-340 K by using a three-terminal capacitance technique. The samples are irradiated in air at room temperature with gamma rays from a $Co^{60}$ source at a dose rate of 0.26 Mrad/h. The change in crystallinity is measured by an x-ray technique. The expansion coefficient is found to increase with radiation dose below 140 K owing to the predominant effect of degradati...

  2. Removable Type Expansion Bolt Innovative Design

    Science.gov (United States)

    Wang, Feng-Lan; Zhang, Bo; Gao, Bo; Liu, Yan-Xin; Gao, Bo

    2016-05-01

    Expansion bolt is a kind of the most common things in our daily life. Currently, there are many kinds of expansion bolts in the market. However, they have some shortcomings that mainly contain underuse and unremovement but our innovation of design makes up for these shortcomings very well. Principle of working follows this: expansion tube is fixed outside of bolt, steel balls and expansion covers are fixed inside. Meanwhile, the steel balls have 120° with each other. When using it ,expansion cover is moved in the direction of its internal part. So the front part of expansion bolt cover is increasingly becoming big and steel halls is moved outside. Only in this way can it be fixed that steel balls make expansion tube expand. When removing them, expansion bolt is moved outside. So the front part of expansion bolt cover is gradually becoming small and steel balls moves inside, after expansion tube shrinks, we can detach them.

  3. The Thermal Expansion Of Feldspars

    Science.gov (United States)

    Hovis, G. L.; Medford, A.; Conlon, M.

    2009-12-01

    Hovis and others (1) investigated the thermal expansion of natural and synthetic AlSi3 feldspars and demonstrated that the coefficient of thermal expansion (α) decreases significantly, and linearly, with increasing room-temperature volume (VRT). In all such feldspars, therefore, chemical expansion limits thermal expansion. The scope of this work now has been broadened to include plagioclase and Ba-K feldspar crystalline solutions. X-ray powder diffraction data have been collected between room temperature and 925 °C on six plagioclase specimens ranging in composition from anorthite to oligoclase. When combined with thermal expansion data for albite (2,3,4) a steep linear trend of α as a function of VRT emerges, reflecting how small changes in composition dramatically affect expansion behavior. The thermal expansion data for five synthetic Ba-K feldspars ranging in composition from 20 to 100 mole percent celsian, combined with data for pure K-feldspar (3,4), show α-VRT relationships similar in nature to the plagioclase series, but with a slope and intercept different from the latter. Taken as a group all Al2Si2 feldspars, including anorthite and celsian from the present study along with Sr- (5) and Pb-feldspar (6) from other workers, show very limited thermal expansion that, unlike AlSi3 feldspars, has little dependence on the divalent-ion (or M-) site occupant. This apparently is due to the necessitated alternation of Al and Si in the tetrahedral sites of these minerals (7), which in turn locks the tetrahedral framework and makes the M-site occupant nearly irrelevant to expansion behavior. Indeed, in feldspar series with coupled chemical substitution it is the change away from a 1:1 Al:Si ratio that gives feldspars greater freedom to expand. Overall, the relationships among α, chemical composition, and room-temperature volume provide useful predictive tools for estimating feldspar thermal expansion and give insight into the controls of expansion behavior in

  4. Portability of health insurance: COBRA expansions and small group market reform.

    Science.gov (United States)

    Fronstin, P

    1995-10-01

    Proposals are currently being put forth to change the health care system incrementally. One area of proposed legislation addresses portability, which allows an individual to change insurers without being subjected to a new waiting period for preexisting conditions. These proposals, discussed in this Issue Brief, contain provisions to limit preexisting condition exclusions, guarantee access to health insurance, guarantee renewal of health insurance, allow individuals to contribute to medical savings accounts on a pretax basis, and change the current law under the Consolidated Omnibus Budget Reconciliation Act of 1985 (COBRA). The proposals would affect insurers, employers, and insured individuals by potentially increasing the cost of providing and purchasing health insurance. Concern about the portability of health insurance primarily arises in situations where an individual is leaving, or would like to leave, a job. If health insurance is not offered by a prospective employer, if the worker must satisfy a waiting period before becoming eligible for coverage, if the benefits package offered through the prospective employer is less generous, or if the employee (or a dependent) has a medical condition that is considered a preexisting condition and would not be covered by the new plan, the employee may opt to remain with his or her current employer--a situation known as job lock. Expansions of COBRA may not have any effect on portability. Employers can charge up to 102 percent of the premium for COBRA coverage, making it unaffordable for many workers. Because cost is a major factor, if there is no reduction in cost (or health care cost inflation) there could be little or no increase in coverage. According to one survey, in 1994 average COBRA costs were $5,301 per COBRA covered worker, compared with $3,420 for active employees. Any expansion of COBRA would almost certainly increase employer cost for health insurance.(ABSTRACT TRUNCATED AT 400 WORDS)

  5. A NOTE ON DELTA-PERTURBATION EXPANSION METHOD

    Institute of Scientific and Technical Information of China (English)

    何吉欢

    2002-01-01

    The Delta-perturbation expansion method, a kind of new perturbation technique depending upon an artificial parameter Delta was studied. The study reveals that the method exits some advantages, but also exits some limitations. To overcome the limitations, the socalled linearized perturbation method proposed by HE Ji-huan can be powerfully applied.

  6. Review of Power System Expansion Planning in Vietnam

    OpenAIRE

    Pereira, Mario

    2008-01-01

    This report assesses current energy expansion planning practices in Vietnam. This assessment comprises both technical aspects (methodology, planning criteria, construction of scenarios, sensitivity analysis and others) and evaluation of recent planning studies. In addition to an assessment of planning practices, it includes proposing a number of scenarios for the local consultant to carry ...

  7. An improved perfectly matched layer in the eigenmode expansion technique

    DEFF Research Database (Denmark)

    Gregersen, Niels; Mørk, Jesper

    2008-01-01

    When employing the eigenmode expansion technique (EET), parasitic reflections at the boundary of the computational domain can be suppressed by introducing a perfectly matched layer (PML). However, the traditional PML, suffers from an artificial field divergence limiting its usefulness. We propose...

  8. Using Taylor Expansions to Prepare Students for Calculus

    Science.gov (United States)

    Lutzer, Carl V.

    2011-01-01

    We propose an alternative to the standard introduction to the derivative. Instead of using limits of difference quotients, students develop Taylor expansions of polynomials. This alternative allows students to develop many of the central ideas about the derivative at an intuitive level, using only skills and concepts from precalculus, and…

  9. Using Taylor Expansions to Prepare Students for Calculus

    Science.gov (United States)

    Lutzer, Carl V.

    2011-01-01

    We propose an alternative to the standard introduction to the derivative. Instead of using limits of difference quotients, students develop Taylor expansions of polynomials. This alternative allows students to develop many of the central ideas about the derivative at an intuitive level, using only skills and concepts from precalculus, and…

  10. Development of a simulation model for the expansion of perlite

    Energy Technology Data Exchange (ETDEWEB)

    Zaehringer, K.; Martin, J.P.; Petit, J.P. [Ecole Central Paris, Chatenay-Malabry (France). Lab. d' Energetique Moleculaire et Macroscopique

    2001-03-01

    New applications of expanded perlite in the building industry lead to a growing demand for process optimization for the expansion of perlite. Perlite expanders aim to adapt their furnaces and/or furnace operation conditions in order to attain more flexibility to produce different expanded perlite qualities. A way to examine the possibilities of an existing installation is the numerical simulation of the perlite expansion process in that installation. The two-phase flow field and combustion in the furnace can be modelled by using currently available computational fluid dynamics (CFD) codes. The only problem is the modelling of the expansion process, which changes the particle size and thus influences the two-phase flow calculations. In this paper the authors propose a physical model for the simulation of the expansion of perlite. This model is based on the results of fundamental studies concerning the expansion phenomenon. It relies on the calculation of particle temperature and viscosity and thus takes into account the most influential parameters for perlite expansion. It allows the calculation of the perlite particle size as a function of time or of the particle's trajectory inside a furnace. Particle size statistics of the expanded product can be determined in that way. The model has been validated by comparison with experimental results from laboratory and industrial measurements. (orig.)

  11. Parallel optical Walsh expansion in a pattern recognition preprocessor using planar microlens array

    Science.gov (United States)

    Murashige, Kimio; Akiba, Atsushi; Baba, Toshihiko; Iga, Kenichi

    1992-05-01

    A parallel optical processor developed for a pattern recognition system using a planar microlens array and a Walsh orthogonal expansion spatial filter is developed. The parallel optical Walsh expansion of multiple images made by the planar microlens array with good accuracy, which assures 99-percent recognition of simple numeral characters in the system, is demonstrated. A novel selection method of Walsh expansion coefficients is proposed in order to enlarge the tolerance of the recognition rate against the deformation of input patterns.

  12. Histone deacetylase complexes promote trinucleotide repeat expansions.

    Directory of Open Access Journals (Sweden)

    Kim Debacker

    2012-02-01

    Full Text Available Expansions of DNA trinucleotide repeats cause at least 17 inherited neurodegenerative diseases, such as Huntington's disease. Expansions can occur at frequencies approaching 100% in affected families and in transgenic mice, suggesting that specific cellular proteins actively promote (favor expansions. The inference is that expansions arise due to the presence of these promoting proteins, not their absence, and that interfering with these proteins can suppress expansions. The goal of this study was to identify novel factors that promote expansions. We discovered that specific histone deacetylase complexes (HDACs promote CTG•CAG repeat expansions in budding yeast and human cells. Mutation or inhibition of yeast Rpd3L or Hda1 suppressed up to 90% of expansions. In cultured human astrocytes, expansions were suppressed by 75% upon inhibition or knockdown of HDAC3, whereas siRNA against the histone acetyltransferases CBP/p300 stimulated expansions. Genetic and molecular analysis both indicated that HDACs act at a distance from the triplet repeat to promote expansions. Expansion assays with nuclease mutants indicated that Sae2 is one of the relevant factors regulated by Rpd3L and Hda1. The causal relationship between HDACs and expansions indicates that HDACs can promote mutagenesis at some DNA sequences. This relationship further implies that HDAC3 inhibitors being tested for relief of expansion-associated gene silencing may also suppress somatic expansions that contribute to disease progression.

  13. Regulation of gas infrastructure expansion

    NARCIS (Netherlands)

    De Joode, J.

    2012-01-01

    The topic of this dissertation is the regulation of gas infrastructure expansion in the European Union (EU). While the gas market has been liberalised, the gas infrastructure has largely remained in the regulated domain. However, not necessarily all gas infrastructure facilities – such as gas storag

  14. On persistently positively expansive maps

    Directory of Open Access Journals (Sweden)

    Alexander Arbieto

    2010-06-01

    Full Text Available In this paper, we prove that any C¹-persistently positively expansive map is expanding. This improves a result due to Sakai (Sakai 2004.Neste artigo, mostramos que todo mapa C¹-persistentemente positivamente expansivo e expansor. Isto melhora um resultado devido a Sakai (Sakai 2004.

  15. On Fourier re-expansions

    OpenAIRE

    Liflyand, E.

    2012-01-01

    We study an extension to Fourier transforms of the old problem on absolute convergence of the re-expansion in the sine (cosine) Fourier series of an absolutely convergent cosine (sine) Fourier series. The results are obtained by revealing certain relations between the Fourier transforms and their Hilbert transforms.

  16. Large N Expansion. Vector Models

    CERN Document Server

    Nissimov, E; Nissimov, Emil; Pacheva, Svetlana

    2006-01-01

    Preliminary version of a contribution to the "Quantum Field Theory. Non-Perturbative QFT" topical area of "Modern Encyclopedia of Mathematical Physics" (SELECTA), eds. Aref'eva I, and Sternheimer D, Springer (2007). Consists of two parts - "main article" (Large N Expansion. Vector Models) and a "brief article" (BPHZL Renormalization).

  17. Solving Replication Problems in Complete Market by Orthogonal Series Expansion

    OpenAIRE

    Chaohua Dong; Jiti Gao

    2012-01-01

    We reconsider the replication problem for contingent claims in a complete market under a general framework. Since there are various limitations in the Black-Scholes pricing formula, we propose a new method to obtain an explicit self-financing trading strategy expression for replications of claims in a general model. The departure of our method from the literature is, using an orthogonal expansion of a process related to the proposed trading strategy, we can construct a complete orthonormal ba...

  18. Effective Expansion: Balance between Shrinkage and Hygroscopic Expansion.

    Science.gov (United States)

    Suiter, E A; Watson, L E; Tantbirojn, D; Lou, J S B; Versluis, A

    2016-05-01

    The purpose of this study was to investigate the relationship between hygroscopic expansion and polymerization shrinkage for compensation of polymerization shrinkage stresses in a restored tooth. One resin-modified glass-ionomer (RMGI) (Ketac Nano, 3M ESPE), 2 compomers (Dyract, Dentsply; Compoglass, Ivoclar), and a universal resin-based composite (Esthet•X HD, Dentsply) were tested. Volumetric change after polymerization ("total shrinkage") and during 4 wk of water storage at 37°C was measured using an optical method (n= 10). Post-gel shrinkage was measured during polymerization using a strain gauge method (n= 10). Extracted human molars with large mesio-occluso-distal slot preparations were restored with the tested restorative materials. Tooth surfaces at baseline (preparation), after restoration, and during 4 wk of 37°C water storage were scanned with an optical scanner to determine cuspal flexure (n= 8). Occlusal interface integrity was measured using dye penetration. Data were analyzed using analysis of variance and post hoc tests (significance level 0.05). All tested materials shrunk after polymerization. RMGI had the highest total shrinkage (4.65%) but lowest post-gel shrinkage (0.35%). Shrinkage values dropped significantly during storage in water but had not completely compensated polymerization shrinkage after 4 wk. All restored teeth initially exhibited inward (negative) cuspal flexure due to polymerization shrinkage. Cuspal flexure with the RMGI restoration was significantly less (-6.4 µm) than with the other materials (-12.1 to -14.1 µm). After 1 d, cuspal flexure reversed to +5.0 µm cuspal expansion with the RMGI and increased to +9.3 µm at 4 wk. After 4 wk, hygroscopic expansion compensated cuspal flexure in a compomer (Compoglass) and reduced flexure with Dyract and resin-based composite. Marginal integrity (93.7% intact restoration wall) was best for the Compoglass restorations and lowest (73.1%) for the RMGI restorations. Hygroscopic

  19. The international expansion strategy of Striyah in Poland

    OpenAIRE

    Frosik, Beata

    2011-01-01

    A Work Project, presented as part of the requirements for the Award of a Masters Degree in Management from the NOVA – School of Business and Economics This work project provides analysis and evaluation of Striyah’s expansion strategy to enter the Polish market. Methods of research include online and live surveys conducted on the sample of 200 Polish customers, analysis of Central Statistical Office reports, Information and Foreign Investment Agency website, websites of fashion industry com...

  20. Notes on Mayer expansions and matrix models

    Energy Technology Data Exchange (ETDEWEB)

    Bourgine, Jean-Emile, E-mail: jebourgine@apctp.org

    2014-03-15

    Mayer cluster expansion is an important tool in statistical physics to evaluate grand canonical partition functions. It has recently been applied to the Nekrasov instanton partition function of N=2 4d gauge theories. The associated canonical model involves coupled integrations that take the form of a generalized matrix model. It can be studied with the standard techniques of matrix models, in particular collective field theory and loop equations. In the first part of these notes, we explain how the results of collective field theory can be derived from the cluster expansion. The equalities between free energies at first orders is explained by the discrete Laplace transform relating canonical and grand canonical models. In a second part, we study the canonical loop equations and associate them with similar relations on the grand canonical side. It leads to relate the multi-point densities, fundamental objects of the matrix model, to the generating functions of multi-rooted clusters. Finally, a method is proposed to derive loop equations directly on the grand canonical model.

  1. Extended Plefka expansion for stochastic dynamics

    Science.gov (United States)

    Bravi, B.; Sollich, P.; Opper, M.

    2016-05-01

    We propose an extension of the Plefka expansion, which is well known for the dynamics of discrete spins, to stochastic differential equations with continuous degrees of freedom and exhibiting generic nonlinearities. The scenario is sufficiently general to allow application to e.g. biochemical networks involved in metabolism and regulation. The main feature of our approach is to constrain in the Plefka expansion not just first moments akin to magnetizations, but also second moments, specifically two-time correlations and responses for each degree of freedom. The end result is an effective equation of motion for each single degree of freedom, where couplings to other variables appear as a self-coupling to the past (i.e. memory term) and a coloured noise. This constitutes a new mean field approximation that should become exact in the thermodynamic limit of a large network, for suitably long-ranged couplings. For the analytically tractable case of linear dynamics we establish this exactness explicitly by appeal to spectral methods of random matrix theory, for Gaussian couplings with arbitrary degree of symmetry.

  2. Plasma heating via adiabatic magnetic compression-expansion cycle

    Science.gov (United States)

    Avinash, K.; Sengupta, M.; Ganesh, R.

    2016-06-01

    Heating of collisionless plasmas in closed adiabatic magnetic cycle comprising of a quasi static compression followed by a non quasi static constrained expansion against a constant external pressure is proposed. Thermodynamic constraints are derived to show that the plasma always gains heat in cycles having at least one non quasi static process. The turbulent relaxation of the plasma to the equilibrium state at the end of the non quasi static expansion is discussed and verified via 1D Particle in Cell (PIC) simulations. Applications of this scheme to heating plasmas in open configurations (mirror machines) and closed configurations (tokamak, reverse field pinche) are discussed.

  3. Thermal Expansion Behavior of Hot-Pressed Engineered Matrices

    Science.gov (United States)

    Raj, S. V.

    2016-01-01

    Advanced engineered matrix composites (EMCs) require that the coefficient of thermal expansion (CTE) of the engineered matrix (EM) matches those of the fiber reinforcements as closely as possible in order to reduce thermal compatibility strains during heating and cooling of the composites. The present paper proposes a general concept for designing suitable matrices for long fiber reinforced composites using a rule of mixtures (ROM) approach to minimize the global differences in the thermal expansion mismatches between the fibers and the engineered matrix. Proof-of-concept studies were conducted to demonstrate the validity of the concept.

  4. Supernovae evidence for an accelerating expansion of the universe

    CERN Document Server

    Baker, G A

    2000-01-01

    Recent experimental results find strong indications that the universe is flat, while other experimental results from supernovae Ia observations have been interpreted to show that, not only that there is an accelerating expansion of the universe, but also that the universe is strongly curved. By means of a recently proposed metric, I am able to show that the experimental results which had previously been analyzed to give a strong curvature are quite consistent with a flat universe, thus resolving the apparent mismatch. The conclusion of these latter authors which indicated an accelerating expansion of the universe remains unchanged.

  5. Generation Expansion Planning Considering Integrating Large-scale Wind Generation

    DEFF Research Database (Denmark)

    Zhang, Chunyu; Ding, Yi; Østergaard, Jacob

    2013-01-01

    Generation expansion planning (GEP) is the problem of finding the optimal strategy to plan the Construction of new generation while satisfying technical and economical constraints. In the deregulated and competitive environment, large-scale integration of wind generation (WG) in power system has...... necessitated the inclusion of more innovative and sophisticated approaches in power system investment planning. A bi-level generation expansion planning approach considering large-scale wind generation was proposed in this paper. The first phase is investment decision, while the second phase is production...

  6. Multi-year expansion planning of large transmission networks

    Energy Technology Data Exchange (ETDEWEB)

    Binato, S.; Oliveira, G.C. [Centro de Pesquisas de Energia Eletrica (CEPEL), Rio de Janeiro, RJ (Brazil)

    1994-12-31

    This paper describes a model for multi-year transmission network expansion to be used in long-term system planning. The network is represented by a linearized (DC) power flow and, for each year, operation costs are evaluated by a linear programming (LP) based algorithm that provides sensitivity indices for circuit reinforcements. A Backward/Forward approaches is proposed to devise an expansion plan over the study period. A case study with the southeastern Brazilian system is presented and discussed. (author) 18 refs., 5 figs., 1 tab.

  7. Efficient Option Pricing Methods Based on Fourier Series Expansions

    Institute of Scientific and Technical Information of China (English)

    Deng DING; Sio Chong U

    2011-01-01

    A novel option pricing method based on Fourier-cosine series expansion was proposed by Fang and Oosterlee. Developing their idea, three new option pricing methods based on Fourier, Fourier-cosine and Fourier-sine series expansions are presented in this paper, which are more efficient when the option prices are calculated with many strike prices. A series of numerical experiments under different exp-Lévy models are also given to compare these new methods with the Fang and Oosterlee's method and other methods.

  8. Local fractional Laplace series expansion method for diffusion equation arising in fractal heat transfer

    Directory of Open Access Journals (Sweden)

    Yan Sheng-Ping

    2015-01-01

    Full Text Available In this article, we first propose the local fractional Laplace series expansion method, which is a coupling method of series expansion method and Laplace transform via local fractional differential operator. An illustrative example for handling the diffusion equation arising in fractal heat transfer is given.

  9. The expansion of the petroleum industry in 2030 Brazil horizon; A expansao do setor petrolifero no Brasil no horizonte 2030

    Energy Technology Data Exchange (ETDEWEB)

    Tavares, Marina Elisabete Espinho [Empresa de Pesquisa Energetica (EPE), Brasilia, DF (Brazil); Soares, Jeferson Borghetti; Queiroz, Renato Pinto de; Oliveira, Ricardo Gorini de

    2008-07-01

    This paper presents an expansion proposal for oil sector in Brazil considering the expansion for energy sector proposed in National Energy Plan 2030. Planning process is important for oil sector because this is an important and strategic primary source which needs great investments in production and refining capacity expansion. The proposal presented considers hypothesis related to oil reserves and production growing, refining capacity expansion, limits in oil and its products imports and these hypothesis should be revised periodically for better results in planning. (author)

  10. Quantization Noise Shaping on Arbitrary Frame Expansions

    Directory of Open Access Journals (Sweden)

    Boufounos Petros T

    2006-01-01

    Full Text Available Quantization noise shaping is commonly used in oversampled A/D and D/A converters with uniform sampling. This paper considers quantization noise shaping for arbitrary finite frame expansions based on generalizing the view of first-order classical oversampled noise shaping as a compensation of the quantization error through projections. Two levels of generalization are developed, one a special case of the other, and two different cost models are proposed to evaluate the quantizer structures. Within our framework, the synthesis frame vectors are assumed given, and the computational complexity is in the initial determination of frame vector ordering, carried out off-line as part of the quantizer design. We consider the extension of the results to infinite shift-invariant frames and consider in particular filtering and oversampled filter banks.

  11. Conflation: a new type of accelerated expansion

    Science.gov (United States)

    Fertig, Angelika; Lehners, Jean-Luc; Mallwitz, Enno

    2016-08-01

    In the framework of scalar-tensor theories of gravity, we construct a new kind of cosmological model that conflates inflation and ekpyrosis. During a phase of conflation, the universe undergoes accelerated expansion, but with crucial differences compared to ordinary inflation. In particular, the potential energy is negative, which is of interest for supergravity and string theory where both negative potentials and the required scalar-tensor couplings are rather natural. A distinguishing feature of the model is that, for a large parameter range, it does not significantly amplify adiabatic scalar and tensor fluctuations, and in particular does not lead to eternal inflation and the associated infinities. We also show how density fluctuations in accord with current observations may be generated by adding a second scalar field to the model. Conflation may be viewed as complementary to the recently proposed anamorphic universe of Ijjas and Steinhardt.

  12. Associativity of the operator product expansion

    CERN Document Server

    Holland, Jan

    2015-01-01

    We consider a recursive scheme for defining the coefficients in the operator product expansion (OPE) of an arbitrary number of composite operators in the context of perturbative, Euclidean quantum field theory in four dimensions. Our iterative scheme is consistent with previous definitions of OPE coefficients via the flow equation method, or methods based on Feynman diagrams. It allows us to prove that a strong version of the "associativity" condition holds for the OPE to arbitrary orders in perturbation theory. Such a condition was previously proposed in an axiomatic setting in [1] and has interesting conceptual consequences: 1) One can characterise perturbations of quantum field theories abstractly in a sort of "Hochschild-like" cohomology setting, 2) one can prove a "coherence theorem" analogous to that in an ordinary algebra: The OPE coefficients for a product of two composite operators uniquely determine those for $n$ composite operators. We concretely prove our main results for the Euclidean $\\varphi^4_...

  13. Multiscale expansions in discrete world

    Indian Academy of Sciences (India)

    Ömer Ünsal; Filiz Taşcan; Mehmet Naci Özer

    2014-07-01

    In this paper, we show the attainability of KdV equation from some types of nonlinear Schrödinger equation by using multiscale expansions discretely. The power of this manageable method is confirmed by applying it to two selected nonlinear Schrödinger evolution equations. This approach can also be applied to other nonlinear discrete evolution equations. All the computations have been made with Maple computer packet program.

  14. College Expansion and Curriculum Choice

    OpenAIRE

    Kaganovich, Michael; Su, Xuejuan

    2012-01-01

    This paper analyzes the impact of college enrollment expansion on student academic achievements and labor market outcomes in the context of competition among colleges. When public policies promote “access” to college education, colleges adjust their curricula: Less selective public colleges adopt a less demanding curriculum in order to accommodate the influx of less able students. As we argue in the paper, this adjustment benefits low-ability college students at the expense of those of medium...

  15. RELIABILITY OF LENTICULAR EXPANSION COMPENSATORS

    Directory of Open Access Journals (Sweden)

    Gabriel BURLACU,

    2011-11-01

    Full Text Available Axial lenticular compensators are made to take over the longitudinal heat expansion, shock , vibration and noise, made elastic connections for piping systems. In order to have a long life for installations it is necessary that all elements, including lenticular compensators, have a good reliability. This desire can be did by technology of manufactoring and assembly of compensators, the material for lenses and by maintenance.of compensator

  16. Topological expansion and boundary conditions

    CERN Document Server

    Eynard, Bertrand

    2008-01-01

    In this article, we compute the topological expansion of all possible mixed-traces in a hermitian two matrix model. In other words we give a recipe to compute the number of discrete surfaces of given genus, carrying an Ising model, and with all possible given boundary conditions. The method is recursive, and amounts to recursively cutting surfaces along interfaces. The result is best represented in a diagrammatic way, and is thus rather simple to use.

  17. Multiple scattering expansion with distortion

    Science.gov (United States)

    Tandy, P. C.; Thaler, R. M.

    1980-12-01

    A multiple scattering description of elastic scattering is formulated in terms of impulsive scatterings from single target nucleons and pairs of target nucleons. In this description, distortion effects on the projectile from the residual medium are also described by multiple scattering in terms of the same single and pair amplitudes. At the level of single scattering, this procedure yields the first order optical potential result of Kerman, McManus, and Thaler. When scattering from both single nucleons and pairs of nucleons is included, the method leads to a one-body integral equation which requires the physical projectile-nucleon and projectile-pair transition amplitudes as input. This input is similar, but not exactly equivalent to that required by the spectator expansion for the optical potential truncated at second order. A principal advantage of the present formulation is that there need be no explicit dependence upon the projection operator Q which projects off the target ground state. This feature introduces a scaling which appears to be a direct extension of the first order Kerman, McManus, and Thaler type of scaling. We follow up suggestions arising in the foregoing to show that the exact optical potential to second order in the spectator expansion can also be cast into a form having no explicit dependence upon Q, and requiring physical projectile-nucleon and projectile-pair transition amplitudes as input. NUCLEAR REACTIONS Multiple scattering from single nucleons, pairs of nucleons in nucleus. Distortion from residual medium. Optical potential. spectator expansion.

  18. Urban underground network expansion planning

    Energy Technology Data Exchange (ETDEWEB)

    Bozic, Z. [Sinclair Knight Merz Pty Ltd., Perth (Australia); Hobson, E. [HI Consulting Services Pty Ltd., Adelaide (Australia)

    1997-03-01

    The authors describe a three step approach to expansion planning of high voltage (HV) urban underground distribution networks. Although the techniques are specifically oriented to underground systems, they are equally applicable to overhead system design. The fundamental engineering problem is how to connect individual high voltage to low voltage substations (HV/LV SS) and zone HV SS into a future urban underground network. The problem is to rearrange the HV network to minimise the cost of expansion subject to provision of an alternative supply, specified load transfer among the neighbouring zone SS, and other general planning constraints such as feeder capacity, voltage regulation, operational requirements and losses. A review of the current state of the art of distribution expansion planning is provided. The normal manual approach is discussed together with more recent research into computer methods. Three lines of computer research are identified and classified as radially constrained, security constrained and utilisation of travelling salesman/vehicle routing problem algorithms (TSP/VRP). The TSP/VRP line of research has been extended here to produce practical techniques for the assistance of network planners. (Author)

  19. A Quantum Query Expansion Approach for Session Search

    Directory of Open Access Journals (Sweden)

    Peng Zhang

    2016-04-01

    Full Text Available Recently, Quantum Theory (QT has been employed to advance the theory of Information Retrieval (IR. Various analogies between QT and IR have been established. Among them, a typical one is applying the idea of photon polarization in IR tasks, e.g., for document ranking and query expansion. In this paper, we aim to further extend this work by constructing a new superposed state of each document in the information need space, based on which we can incorporate the quantum interference idea in query expansion. We then apply the new quantum query expansion model to session search, which is a typical Web search task. Empirical evaluation on the large-scale Clueweb12 dataset has shown that the proposed model is effective in the session search tasks, demonstrating the potential of developing novel and effective IR models based on intuitions and formalisms of QT.

  20. Transmission expansion in an oligopoly considering generation investment equilibrium

    DEFF Research Database (Denmark)

    Taheri, S. Saeid; Kazempour, Jalal; Seyedshenava, Seyedjalal

    2017-01-01

    Transmission expansion planning (TEP) is a sophisticated decision-making problem, especially in an oligopolistic electricity market in which a number of strategic (price-maker) producers compete together. A transmission system planner, who is in charge of making TEP decisions, requires considering...... the future generation investment actions. However, in such an oligopolistic market, each producer makes its own strategic generation investment decisions. This motivates the transmission system planner to consider the generation investment decision-making problem of all producers within its TEP model....... This paper proposes a tri-level TEP decision-making model to be solved by the transmission system planner, whose objective is to maximize the social welfare of the market minus the expansion costs, and whose constraints are the transmission expansion limits as well as the generation investment equilibrium...

  1. Prediction of final settlements of buildings constructed on expansive soils

    Directory of Open Access Journals (Sweden)

    María-de-la-Luz Pérez-Rea

    2015-06-01

    Full Text Available Because the action of the swelling pressure, the settlements caused by the transmitted load from the structure on expansive soils, and the settlements calculated by classic theories of soils mechanics are different. This swelling pressure acts in opposite direction to the weight of the building. In this paper, the authors propose the use of a volumetric strain coefficient by settlements exp, in a soil-structure interaction algorithm taking into account the expansive soil behavior in the reduction of the settlement magnitude when a building is placed above soil. It’s necessary to know the initial properties of the expansive unsaturated soil and the load building conditions. A laboratory process is described for determining the aexpcoefficient.

  2. 78 FR 36165 - Reorganization/Expansion of Foreign-Trade Zone 104; (Expansion of Service Area and Expansion of...

    Science.gov (United States)

    2013-06-17

    ... Federal Register (77 FR 43047, 07/23/12) and the application has been processed pursuant to the FTZ Act... Foreign-Trade Zones Board Reorganization/Expansion of Foreign-Trade Zone 104; (Expansion of Service Area and Expansion of Zone); Under Alternative Site Framework, Savannah, Georgia Pursuant to its...

  3. Application of DAC Codeword Spectrum: Expansion Factor

    CERN Document Server

    Fang, Yong

    2010-01-01

    Distributed Arithmetic Coding (DAC) proves to be an effective implementation of Slepian-Wolf Coding (SWC), especially for short data blocks. To study the property of DAC codewords, the author has proposed the concept of DAC codeword spectrum. For equiprobable binary sources, the problem was formatted as solving a system of functional equations. Then, to calculate DAC codeword spectrum in general cases, three approximation methods have been proposed. In this paper, the author makes use of DAC codeword spectrum as a tool to answer an important question: how many (including proper and wrong) paths will be created during the DAC decoding, if no path is pruned? The author introduces the concept of another kind of DAC codeword spectrum, i.e. time spectrum, while the originally-proposed DAC codeword spectrum is called path spectrum from now on. To measure how fast the number of decoding paths increases, the author introduces the concept of expansion factor which is defined as the ratio of path numbers between two co...

  4. Taylor- and fugacity expansion for the effective Z(3) spin model of QCD at finite density

    CERN Document Server

    Grünwald, Eva; Gattringer, Christof

    2014-01-01

    Series expansions in the chemical potential mu are studied for an effective theory of QCD which has a flux representation where the complex action is overcome. In particular we consider fugacity series, Taylor expansion and a modified Taylor expansion and compare the outcome of these series to the reference results from a Monte Carlo simulation in the flux representation where arbitrary mu is accessible. It is shown that for most parameter values the fugacity expansion gives the best approximation to the data from the flux simulation, followed by our newly proposed modified Taylor expansion. For the conventional Taylor expansion we find that the results coincide with the flux data only for very small mu.

  5. Generation Expansion Planning with High Penetration of Wind Power

    Science.gov (United States)

    Sharan, Ishan; Balasubramanian, R.

    2016-08-01

    Worldwide thrust is being provided in generation of electricity from wind. Planning for the developmental needs of wind based power has to be consistent with the objective and basic framework of overall resource planning. The operational issues associated with the integration of wind power must be addressed at the planning stage. Lack of co-ordinated planning of wind turbine generators, conventional generating units and expansion of the transmission system may lead to curtailment of wind power due to transmission inadequacy or operational constraints. This paper presents a generation expansion planning model taking into account fuel transportation and power transmission constraints, while addressing the operational issues associated with the high penetration of wind power. For analyzing the operational issues, security constrained unit commitment algorithm is embedded in the integrated generation and transmission expansion planning model. The integrated generation and transmission expansion planning problem has been formulated as a mixed integer linear problem involving both binary and continuous variables in GAMS. The model has been applied to the expansion planning of a real system to illustrate the proposed approach.

  6. Infinite S-expansion with ideal subtraction and some applications

    Science.gov (United States)

    Peñafiel, D. M.; Ravera, L.

    2017-08-01

    According to the literature, the S-expansion procedure involving a finite semigroup is valid no matter what the structure of the original Lie (super)algebra is; however, when something about the structure of the starting (super)algebra is known and when certain particular conditions are met, the S-expansion method (with its features of resonance and reduction) is able not only to lead to several kinds of expanded (super)algebras but also to reproduce the effects of the standard as well as the generalized Inönü-Wigner contraction. In the present paper, we propose a new prescription for S-expansion, involving an infinite abelian semigroup S(∞ ) and the subtraction of an infinite ideal subalgebra. We show that the subtraction of the infinite ideal subalgebra corresponds to a reduction. Our approach is a generalization of the finite S-expansion procedure presented in the literature, and it offers an alternative view of the generalized Inönü-Wigner contraction. We then show how to write the invariant tensors of the target (super)algebras in terms of those of the starting ones in the infinite S-expansion context presented in this work. We also give some interesting examples of application on algebras and superalgebras.

  7. Thermal expansion of ceramics around room temperature

    OpenAIRE

    橋本, 忍; 安達, 信泰; 太田, 敏孝; 宮崎, 英敏; ハシモト, シノブ; アダチ, ノブヤス; オオタ, トシタカ; Hashimoto, Shinobu; Adachi, Nobuyasu; Ota, Toshitaka

    2010-01-01

    Thermal expansion of some ceramics, polymers and metals was measured by dilatometer around room temperature (from -140℃to +200℃), and compared with thermal expansion in the high temperature region. The CTE (coefficient of thermal expansion)of almost ceramics changed drastically between room temperature and high temperature region. On the other hand, the CTE ofmetals did not change between room temperature and high temperature region. The difference on thermal expansion betweenceramics and met...

  8. Thermal Expansion in YbGaGe

    OpenAIRE

    Bobev, Svilen; Williams, Darrick J.; Thompson, J.D.; Sarrao, J L

    2004-01-01

    Thermal expansion and magnetic susceptibility measurements as a function of temperature are reported for YbGaGe. Despite the fact that this material has been claimed to show zero thermal expansion over a wide temperature range, we observe thermal expansion typical of metals and Pauli paramagnetic behavior, which perhaps indicates strong sample dependence in this system.

  9. Multiplier theorems for special Hermite expansions on

    Institute of Scientific and Technical Information of China (English)

    张震球; 郑维行

    2000-01-01

    The weak type (1,1) estimate for special Hermite expansions on Cn is proved by using the Calderon-Zygmund decomposition. Then the multiplier theorem in Lp(1 < p < ω ) is obtained. The special Hermite expansions in twisted Hardy space are also considered. As an application, the multipli-ers for a certain kind of Laguerre expansions are given in Lp space.

  10. An All-Orders Derivative Expansion

    OpenAIRE

    Dunne, Gerald(Department of Physics, University of Connecticut, Storrs, CT, 06269, U.S.A.)

    1996-01-01

    We evaluate the exact $QED_{2+1}$ effective action for fermions in the presence of a family of static but spatially inhomogeneous magnetic field profiles. This exact result yields an all-orders derivative expansion of the effective action, and indicates that the derivative expansion is an asymptotic, rather than a convergent, expansion.

  11. Quantum fields and "Big Rip" expansion singularities

    CERN Document Server

    Calderon, H; Calderon, Hector; Hiscock, William A.

    2005-01-01

    The effects of quantized conformally invariant massless fields on the evolution of cosmological models containing a ``Big Rip'' future expansion singularity are examined. Quantized scalar, spinor, and vector fields are found to strengthen the accelerating expansion of such models as they approach the expansion singularity.

  12. Health-Related Outcomes among the Poor: Medicaid Expansion vs. Non-Expansion States.

    Directory of Open Access Journals (Sweden)

    Xuesong Han

    Full Text Available States' decisions not to expand Medicaid under the Affordable Care Act (ACA could potentially affect access to care and health status among their low-income residents.The 2010-2012 nationally representative Medical Expenditure Panel Survey data were analyzed in 2015 to compare 9755 low-income adults aged 18-64 years from Medicaid-expanding states with 7455 adults from nonexpanding states. Multivariate logistic regression models were fitted to evaluate the differences in access to care, receipt of preventive services, quality of care, attitudes about health and self-reported health status by Medicaid expansion status. The differences in care utilization and medical expenditures between the two groups were examined using a 2-part modeling approach.Compared to their counterparts in Medicaid expansion states, low income adults in the nonexpanding states were more likely to be black and reside in rural areas and were less likely to have a usual source of care (prevalence ratio[PR] 0.86, 95% confidence interval[CI] 0.82-0.91 and recommended preventive services such as dental checkups (PR = 0.86; CI = 0.79-0.94, routine checks (PR = 0.89; CI = 0.83-0.95, flu vaccinations (PR = 0.89; CI = 0.81-0.98, and blood pressure checks (PR = 0.96; CI = 0.94-0.99. They also had less care utilization, fewer prescriptions, and less medical expenditures, but more out-of-pocket expenditures (all p-value <0.05.Low-income adults in Medicaid nonexpanding states, who are disproportionately represented by blacks and rural residents, were worse off for multiple health-related outcomes compared to their counterparts in Medicaid expanding states at the baseline of ACA implementation, suggesting that low income adults residing in nonexpanding states may benefit markedly from the expansion of Medicaid.

  13. 75 FR 11634 - Proposed Collection; Comment Request

    Science.gov (United States)

    2010-03-11

    ... existing or proposed Target Markets and/or to become certified CDFIs. The regulations governing the CDFI... measured through the deployment of credit, capital, and financial services to the applicant's Target Markets or an expansion into new Investment Areas, Low-Income Targeted Populations, or Other...

  14. 76 FR 47298 - Proposed Collection; Comment Request

    Science.gov (United States)

    2011-08-04

    ... credit, capital, and financial services within their respective Target Markets or the expansion into new... the CDFI Fund should allow for additional indicators to describe needs in an Applicant's Target Market... better address the community development and capital access needs of their existing or proposed Target...

  15. A Compensation Algorithm Based on RSPWVD-Hough Transform for Doppler Expansion in Passive Radar

    Directory of Open Access Journals (Sweden)

    Guan Xin

    2013-12-01

    Full Text Available For passive radar, long integration time is used to achieve high processing gain to detect weak target. But range migration and Doppler expansion may occur for high-speed targets. Keystone transform can be used to rectify range migration introduced by radial-speed. But tangential-speed may still lead to Doppler expansion, which entails a loss of integration gain. In this paper, signal model is presented to analyze the reason for Doppler expansion. Then, a Doppler expansion compensation method is introduced based on RSPWVD-Hough transform for multi-target scenario. Simulation results show that the proposed method can compensate the energy loss caused by Doppler expansion for multi-target scene, and it achieves good performance. The proposed method is also effective for weak targets, which means it can improve the detection ability of weak target in passive radar systems.

  16. 76 FR 34211 - Intent To Prepare a Draft Environmental Impact Statement for the Proposed Kennecott Utah Copper...

    Science.gov (United States)

    2011-06-13

    ... Proposed Kennecott Utah Copper LLC Tailings Expansion Project, Near Magna, Salt Lake County, UT, Permit... Environmental Impact Statement (EIS) for the proposed Kennecott Utah Copper Tailings Expansion Project, an expansion of an active commercial mining operation near Magna, Salt Lake County, UT. Kennecott Utah Copper...

  17. Expansion of protein domain repeats.

    Directory of Open Access Journals (Sweden)

    Asa K Björklund

    2006-08-01

    Full Text Available Many proteins, especially in eukaryotes, contain tandem repeats of several domains from the same family. These repeats have a variety of binding properties and are involved in protein-protein interactions as well as binding to other ligands such as DNA and RNA. The rapid expansion of protein domain repeats is assumed to have evolved through internal tandem duplications. However, the exact mechanisms behind these tandem duplications are not well-understood. Here, we have studied the evolution, function, protein structure, gene structure, and phylogenetic distribution of domain repeats. For this purpose we have assigned Pfam-A domain families to 24 proteomes with more sensitive domain assignments in the repeat regions. These assignments confirmed previous findings that eukaryotes, and in particular vertebrates, contain a much higher fraction of proteins with repeats compared with prokaryotes. The internal sequence similarity in each protein revealed that the domain repeats are often expanded through duplications of several domains at a time, while the duplication of one domain is less common. Many of the repeats appear to have been duplicated in the middle of the repeat region. This is in strong contrast to the evolution of other proteins that mainly works through additions of single domains at either terminus. Further, we found that some domain families show distinct duplication patterns, e.g., nebulin domains have mainly been expanded with a unit of seven domains at a time, while duplications of other domain families involve varying numbers of domains. Finally, no common mechanism for the expansion of all repeats could be detected. We found that the duplication patterns show no dependence on the size of the domains. Further, repeat expansion in some families can possibly be explained by shuffling of exons. However, exon shuffling could not have created all repeats.

  18. Contribution of thermal expansion and

    Directory of Open Access Journals (Sweden)

    O.I.Pursky

    2007-01-01

    Full Text Available A theoretical model is developed to describe the experimental results obtained for the isobaric thermal conductivity of rare gas solids (RGS. The isobaric thermal conductivity of RGS has been analysed within Debye approximation with regard to the effect of thermal expansion. The suggested model takes into consideration the fact that thermal conductivity is determined by U-processes while above the phonon mobility edge it is determined by "diffusive" modes migrating randomly from site to site. The mobility edge ω0 is determined from the condition that the phonon mean-free path restricted by the U-processes cannot be smaller than half of the phonon wavelength.

  19. Cosmic Growth and Expansion Conjoined

    CERN Document Server

    Linder, Eric V

    2016-01-01

    Cosmological measurements of both the expansion history and growth history have matured, and the two together provide an important test of general relativity. We consider their joint evolutionary track, showing that this has advantages in distinguishing cosmologies relative to considering them individually or at isolated redshifts. In particular, the joint comparison relaxes the shape degeneracy that makes $f\\sigma_8(z)$ curves difficult to separate from the overall growth amplitude. The conjoined method further helps visualization of which combinations of redshift ranges provide the clearest discrimination. We examine standard dark energy cosmologies, modified gravity, and "stuttering" growth, each showing distinct signatures.

  20. WEAVE-QSO: A Massive Intergalactic Medium Survey for the William Herschel Telescope

    CERN Document Server

    Pieri, M M; Chaves-Montero, J; Paris, I; Fumagalli, M; Bolton, J S; Viel, M; Noterdaeme, P; Miralda-Escudé, J; Busca, N G; Rahmani, H; Peroux, C; Font-Ribera, A; Trager, S C

    2016-01-01

    In these proceedings we describe the WEAVE-QSO survey, which will observe around 400,000 high redshift quasars starting in 2018. This survey is part of a broader WEAVE survey to be conducted at the 4.2m William Herschel Telescope. We will focus on chiefly on the science goals, but will also briefly summarise the target selection methods anticipated and the expected survey plan. Understanding the apparent acceleration in the expansion of the Universe is one of the key scientific challenges of our time. Many experiments have been proposed to study this expansion, using a variety of techniques. Here we describe a survey that can measure this acceleration and therefore help elucidate the nature of dark energy: a survey of the Lyman-alpha forest (and quasar absorption in general) in spectra towards z>2 quasars (QSOs). Further constraints on neutrino masses and warm dark matter are also anticipated. The same data will also shed light on galaxy formation via study of the properties of inflowing/outflowing gas associ...

  1. A double expansion method for the frequency response of finite-length beams with periodic parameters

    Science.gov (United States)

    Ying, Z. G.; Ni, Y. Q.

    2017-03-01

    A double expansion method for the frequency response of finite-length beams with periodic distribution parameters is proposed. The vibration response of the beam with spatial periodic parameters under harmonic excitations is studied. The frequency response of the periodic beam is the function of parametric period and then can be expressed by the series with the product of periodic and non-periodic functions. The procedure of the double expansion method includes the following two main steps: first, the frequency response function and periodic parameters are expanded by using identical periodic functions based on the extension of the Floquet-Bloch theorem, and the period-parametric differential equation for the frequency response is converted into a series of linear differential equations with constant coefficients; second, the solutions to the linear differential equations are expanded by using modal functions which satisfy the boundary conditions, and the linear differential equations are converted into algebraic equations according to the Galerkin method. The expansion coefficients are obtained by solving the algebraic equations and then the frequency response function is finally determined. The proposed double expansion method can uncouple the effects of the periodic expansion and modal expansion so that the expansion terms are determined respectively. The modal number considered in the second expansion can be reduced remarkably in comparison with the direct expansion method. The proposed double expansion method can be extended and applied to the other structures with periodic distribution parameters for dynamics analysis. Numerical results on the frequency response of the finite-length periodic beam with various parametric wave numbers and wave amplitude ratios are given to illustrate the effective application of the proposed method and the new frequency response characteristics, including the parameter-excited modal resonance, doubling-peak frequency response

  2. Digital expansions with negative real bases

    CERN Document Server

    Steiner, Wolfgang

    2011-01-01

    Similarly to Parry's characterization of $\\beta$-expansions of real numbers in real bases $\\beta > 1$, Ito and Sadahiro characterized digital expansions in negative bases, by the expansions of the endpoints of the fundamental interval. Parry also described the possible expansions of 1 in base $\\beta > 1$. In the same vein, we characterize the sequences that occur as $(-\\beta)$-expansion of $\\frac{-\\beta}{\\beta+1}$ for some $\\beta > 1$. These sequences also describe the itineraries of 1 by linear mod one transformations with negative slope.

  3. Gyrification from constrained cortical expansion

    CERN Document Server

    Tallinen, Tuomas; Biggins, John S; Mahadevan, L

    2015-01-01

    The exterior of the mammalian brain - the cerebral cortex - has a conserved layered structure whose thickness varies little across species. However, selection pressures over evolutionary time scales have led to cortices that have a large surface area to volume ratio in some organisms, with the result that the brain is strongly convoluted into sulci and gyri. Here we show that the gyrification can arise as a nonlinear consequence of a simple mechanical instability driven by tangential expansion of the gray matter constrained by the white matter. A physical mimic of the process using a layered swelling gel captures the essence of the mechanism, and numerical simulations of the brain treated as a soft solid lead to the formation of cusped sulci and smooth gyri similar to those in the brain. The resulting gyrification patterns are a function of relative cortical expansion and relative thickness (compared with brain size), and are consistent with observations of a wide range of brains, ranging from smooth to highl...

  4. Evolutionary expansion of the Monogenea.

    Science.gov (United States)

    Kearn, G C

    1994-12-01

    The evolutionary expansion of the monogeneans has taken place in parallel with the diversification of the fish-like vertebrates. In this article the main trends in monogenean evolution are traced from a hypothetical skin-parasitic ancestor on early vertebrates. Special consideration is given to the following topics: early divergence between skin feeders and blood feeders; diversification and specialization of the haptor for attachment to skin; transfer from host to host, viviparity and the success of the gyrodactylids; predation on skin parasites and camouflage; colonization of the buccal and branchial cavities; diversification and specialization of the haptor for attachment to the gills; phoresy in gill parasites; the development of endoparasitism and the origin of the cestodes; the success of dactylogyroidean gill parasites; the uniqueness of the polyopisthocotyleans; ovoviviparity and the colonization of the tetrapods. Host specificity has been the guiding force of coevolution between monogeneans and their vertebrate hosts, but the establishment of monogeneans on unrelated hosts sharing the same environment (host-switching) may have been underestimated. Host-switching has provided significant opportunities for evolutionary change of direction and is probably responsible for the establishment of monogeneans on cephalopod molluscs, on the hippopotamus and possibly on chelonians. There are indications that host-switching may be more common in monogeneans that spread by direct transfer of adults/juveniles from host to host. A limitation on the further expansion of monogeneans is the need for water for the dispersal of the infective larva (oncomiracidium).

  5. Transmission Network Expansion Planning Considering Phase-Shifter Transformers

    Directory of Open Access Journals (Sweden)

    Celso T. Miasaki

    2012-01-01

    Full Text Available This paper presents a novel mathematical model for the transmission network expansion planning problem. Main idea is to consider phase-shifter (PS transformers as a new element of the transmission system expansion together with other traditional components such as transmission lines and conventional transformers. In this way, PS are added in order to redistribute active power flows in the system and, consequently, to diminish the total investment costs due to new transmission lines. Proposed mathematical model presents the structure of a mixed-integer nonlinear programming (MINLP problem and is based on the standard DC model. In this paper, there is also applied a specialized genetic algorithm aimed at optimizing the allocation of candidate components in the network. Results obtained from computational simulations carried out with IEEE-24 bus system show an outstanding performance of the proposed methodology and model, indicating the technical viability of using these nonconventional devices during the planning process.

  6. Fast algorithms for Quadrature by Expansion I: Globally valid expansions

    Science.gov (United States)

    Rachh, Manas; Klöckner, Andreas; O'Neil, Michael

    2017-09-01

    The use of integral equation methods for the efficient numerical solution of PDE boundary value problems requires two main tools: quadrature rules for the evaluation of layer potential integral operators with singular kernels, and fast algorithms for solving the resulting dense linear systems. Classically, these tools were developed separately. In this work, we present a unified numerical scheme based on coupling Quadrature by Expansion, a recent quadrature method, to a customized Fast Multipole Method (FMM) for the Helmholtz equation in two dimensions. The method allows the evaluation of layer potentials in linear-time complexity, anywhere in space, with a uniform, user-chosen level of accuracy as a black-box computational method. Providing this capability requires geometric and algorithmic considerations beyond the needs of standard FMMs as well as careful consideration of the accuracy of multipole translations. We illustrate the speed and accuracy of our method with various numerical examples.

  7. Host range expansion is density dependent.

    Science.gov (United States)

    Castagneyrol, Bastien; Jactel, Hervé; Brockerhoff, Eckehard G; Perrette, Nicolas; Larter, Maximilien; Delzon, Sylvain; Piou, Dominique

    2016-11-01

    The realized host range of herbivores is expected to increase with herbivore population density. Theory also predicts that trait similarity and phylogenetic relatedness between native and exotic plants is expected to increase the susceptibility of introduced plants to feeding by native herbivores. Whether the ability of native herbivores to extend their host range to introduced species is density dependent is still unknown. We addressed this question by monitoring pine processionary moth (PPM, Thaumetopoea pityocampa) attacks during nine consecutive years on 41 pine species (8 native and 33 introduced) planted in an arboretum. The survey encompassed latent and outbreak periods. A total of 28 pine species were attacked by PPM. There was no difference in the probability of attack between native and introduced pine species. Host range increased and was more phylogenetically clustered during outbreak than latent periods. When population density increased, PPM expanded its diet breadth by attacking introduced pine species that were closely related to native hosts. This study demonstrates the density dependence of host range expansion in a common pine herbivore. Importantly, it supports the idea that the degree of phylogenetic proximity between host species can be a better predictor of attacks than the introduction status, which may help to predict the outcomes of new plant-herbivore interactions.

  8. Statistical Inference with Data Augmentation and Parameter Expansion

    OpenAIRE

    Yatracos, Yannis G.

    2015-01-01

    Statistical pragmatism embraces all efficient methods in statistical inference. Augmentation of the collected data is used herein to obtain representative population information from a large class of non-representative population's units. Parameter expansion of a probability model is shown to reduce the upper bound on the sum of error probabilities for a test of simple hypotheses, and a measure, R, is proposed for the effect of activating additional component(s) in the sufficient statistic.

  9. Least Squares Polynomial Chaos Expansion: A Review of Sampling Strategies

    OpenAIRE

    Hadigol, Mohammad; Doostan, Alireza

    2017-01-01

    As non-institutive polynomial chaos expansion (PCE) techniques have gained growing popularity among researchers, we here provide a comprehensive review of major sampling strategies for the least squares based PCE. Traditional sampling methods, such as Monte Carlo, Latin hypercube, quasi-Monte Carlo, optimal design of experiments (ODE), Gaussian quadratures, as well as more recent techniques, such as coherence-optimal and randomized quadratures are discussed. We also propose a hybrid sampling ...

  10. Combined heuristic with fuzzy system to transmission system expansion planning

    Energy Technology Data Exchange (ETDEWEB)

    Silva Sousa, Aldir; Asada, Eduardo N. [University of Sao Paulo, Sao Carlos School of Engineering, Department of Electrical Engineering Av. Trabalhador Sao-carlense, 400, 13566-590 Sao Carlos, SP (Brazil)

    2011-01-15

    A heuristic algorithm that employs fuzzy logic is proposed to the power system transmission expansion planning problem. The algorithm is based on the divide to conquer strategy, which is controlled by the fuzzy system. The algorithm provides high quality solutions with the use of fuzzy decision making, which is based on nondeterministic criteria to guide the search. The fuzzy system provides a self-adjusting mechanism that eliminates the manual adjustment of parameters to each system being solved. (author)

  11. The expansion of the universe observed with supernovae.

    Science.gov (United States)

    Astier, Pierre

    2012-11-01

    Over the last 20 years, supernovae have become a key tool to constrain the expansion history of the Universe through the construction of Hubble diagrams, using luminosity distances to supernovae belonging to the 'Ia' subtype. This technique was key for the discovery that the expansion of the Universe is now accelerating. We review the principle and difficulties of the measurements, the classification and diversity of supernovae, and the physics of explosion. We discuss the systematic uncertainties affecting the cosmological conclusions with some emphasis on photometric calibration. We describe the major supernova cosmology surveys, the presented analyses and their conclusions, together with the present status of the field. We conclude on the expectations for the near future.

  12. Dredged-Material Disposal System Capacity Expansion.

    Science.gov (United States)

    1986-04-01

    plan is the product of the acquisition cost and the binary variable. O’Laoghaire and Himmelblau (1972) propose such an IP formulation, and a similar...Methods: A Survey," Op- erations Research, Vol. 14, 1966, pp. 699-719. Lesso, W. G., Himmelblau , D. M., Jensen, P. A., and Shanmugham, C. V., "Ca...34 Water Resources Research, Vol. 15, No. 4, Aug., 1979, pp. 750-756. O’Laoghaire, D. T., and Himmelblau , D. M., "Optimal Capital Investment in the

  13. 某拟建核电站周围居民对核辐射认知的调查%A survey on the public's radiation perception in the region surrounding a proposed nuclear power plant

    Institute of Scientific and Technical Information of China (English)

    程晓军; 田崇彬; 楚彩芳; 雷翠萍; 孙全富; 苏旭

    2015-01-01

    Objective To investigate the public's perception and attitudes on the development of nuclear power, assess their knowledge about nuclear power and radiation, and to build a database on the public's perception for the purpose of providing better public health service, associate technical support and give suggestions for decision-makers.Methods In total of 1 440 local residents who live within 30 kilometers of a proposed nuclear power were chosen for in-person interviews.Questionnaires comprised of 49 questions designed to assess the public's knowledge of radiation and nuclear power, their attitudes to the development of nuclear power, their evaluation of local government and their informational environment.ANOVA was used to compare the influence of different factors on cognitive level.Multivariate linear regression was used to analyze the main factors affecting the level of public awareness.Comparison among groups (respondents in this survey vs.other comparable surveys) was conducted using x2 test.Results Of the respondents, 29.7% and 39.5% of respondents knew about nuclear power and radiation, respectively, 24.2% supported the construction of a nuclear power plant in their own area, which was lower than the average national support for construction of nuclear power plants (29.0%) (x2 =8.71 ,P < 0.05).When queried about safety cncerns 36.8% of respondents worried about the safety of nuclear power plant and 78.5% of respondents were afraid of the damage to their health, while 34.1% of respondents held the belief that the nuclear power plant could bring harmful effect even under normal operation.Regarding the informational environment, 90.0% of the respondents could not or barely got access to knowledge on nuclear power plants, 71.1% hoped to acquire the knowledge on nuclear power plants, 48.4% hoped to acquire this knowledge by television programs, and 62.4% mostly trusted information given by experts from universities or institutes

  14. On the Equisummability of Hermite and Fourier Expansions

    Indian Academy of Sciences (India)

    E K Narayanan; S Thangavelu

    2001-02-01

    We prove an equisummability result for the Fourier expansions and Hermite expansions as well as special Hermite expansions. We also prove the uniform boundedness of the Bochner-Riesz means associated to the Hermite expansions for polyradial functions.

  15. Shrub expansion in SW Greenland

    DEFF Research Database (Denmark)

    Jørgensen, Rasmus Halfdan

    to increasing shrub cover. Despite this, there is only limited experimental evidence that growth of the species responds to warming. Plant populations in fragmented and isolated locations could face problems adapting to a warming climate due to limited genetic variation and restricted migration from southern...... of firewood collection. A delayed reaction to the ending of the little ice age cannot be excluded, but seems rather unlikely considering other studies from Greenland. Effects of global warming in SW Greenland must be studied over even longer time periods than the 120 years of the current study. To answer......Arctic regions have experienced higher temperatures in recent decades, and the warming trend is projected to continue in the coming years. Arctic ecosystems are considered to be particularly vulnerable to climate change. Expansion of shrubs has been observed widely in tundra areas across the Arctic...

  16. Bilinear Expansion For Redistribution Functions

    Science.gov (United States)

    Harutyunian, Haik; Alecian, Georges; Khachatryan, Knarik; Vardanyan, Ani

    2016-11-01

    We suggest here a method for construction of a bilinear expansion for an angle-averaged redistribution function. This function describes the elementary act of a photon scattering by a model two-level atom with the upper level broadened due to radiation damping. An eigenvalue and eigenvector determination problem is formulated and the relevant matrices are found analytically. Numerical procedures for their computations are elaborated as well. A simple method for the numerical calculations accuracy evaluation is suggested. It is shown that a family of redistribution functions describing the light scattering process within the spectral line frequencies can be constructed if the eigenvalue problem for the considered function is solved. It becomes possible if the eigenvalues and eigenvectors with the appropriate basic functions are used. The Voigt function and its derivatives used as basic functions are studied in detail as well.

  17. Accelerating Expansion of the Universe

    CERN Document Server

    Chakraborty, Writambhara

    2011-01-01

    This thesis concentrates on the accelerated expansion of the Universe recently explored by measurements of redshift and luminosity-distance relations of type Ia Supernovae. We have considered a model of the universe filled with modified Chaplygin gas and barotropic fluid. The role of dynamical cosmological constant has been explored with Modified Chaplygin Gas as the background fluid. Various phenomenological models for \\Lambda have been studied in presence of the gravitational constant G to be constant or time dependent. A new form of the well known Chaplygin gas model has been presented by introducing inhomogeneity in the EOS. This model explains w=-1 crossing. An interaction of this model with the scalar field has also been investigated through a phenomenological coupling function. Tachyonic field has been depicted as dark energy model to represent the present acceleration of the Universe. A mixture of the tachyonic fluid has been considered with Generalized Chaplygin Gas to show the role of the later as a...

  18. Asymptotic expansions in nonlinear rotordynamics

    Science.gov (United States)

    Day, William B.

    1987-01-01

    This paper is an examination of special nonlinearities of the Jeffcott equations in rotordynamics. The immediate application of this analysis is directed toward understanding the excessive vibrations recorded in the LOX pump of the SSME during hot-firing ground testing. Deadband, side force, and rubbing are three possible sources of inducing nonlinearity in the Jeffcott equations. The present analysis initially reduces these problems to the same mathematical description. A special frequency, named the nonlinear natural frequency, is defined and used to develop the solutions of the nonlinear Jeffcott equations as singular asymptotic expansions. This nonlinear natural frequency, which is the ratio of the cross-stiffness and the damping, plays a major role in determining response frequencies.

  19. High resolution survey for topographic surveying

    Science.gov (United States)

    Luh, L. C.; Setan, H.; Majid, Z.; Chong, A. K.; Tan, Z.

    2014-02-01

    In this decade, terrestrial laser scanner (TLS) is getting popular in many fields such as reconstruction, monitoring, surveying, as-built of facilities, archaeology, and topographic surveying. This is due the high speed in data collection which is about 50,000 to 1,000,000 three-dimensional (3D) points per second at high accuracy. The main advantage of 3D representation for the data is that it is more approximate to the real world. Therefore, the aim of this paper is to show the use of High-Definition Surveying (HDS), also known as 3D laser scanning for topographic survey. This research investigates the effectiveness of using terrestrial laser scanning system for topographic survey by carrying out field test in Universiti Teknologi Malaysia (UTM), Skudai, Johor. The 3D laser scanner used in this study is a Leica ScanStation C10. Data acquisition was carried out by applying the traversing method. In this study, the result for the topographic survey is under 1st class survey. At the completion of this study, a standard of procedure was proposed for topographic data acquisition using laser scanning systems. This proposed procedure serves as a guideline for users who wish to utilize laser scanning system in topographic survey fully.

  20. Pressurized electrolysis stack with thermal expansion capability

    Science.gov (United States)

    Bourgeois, Richard Scott

    2015-07-14

    The present techniques provide systems and methods for mounting an electrolyzer stack in an outer shell so as to allow for differential thermal expansion of the electrolyzer stack and shell. Generally, an electrolyzer stack may be formed from a material with a high coefficient of thermal expansion, while the shell may be formed from a material having a lower coefficient of thermal expansion. The differences between the coefficients of thermal expansion may lead to damage to the electrolyzer stack as the shell may restrain the thermal expansion of the electrolyzer stack. To allow for the differences in thermal expansion, the electrolyzer stack may be mounted within the shell leaving a space between the electrolyzer stack and shell. The space between the electrolyzer stack and the shell may be filled with a non-conductive fluid to further equalize pressure inside and outside of the electrolyzer stack.

  1. Novel thermal expansion of lead titanate

    Institute of Scientific and Technical Information of China (English)

    XING Xianran; DENG Jinxia; CHEN Jun; LIU Guirong

    2003-01-01

    Lattice parameters of lead titanate were precisely re-determined in the ternperature range of-150-950℃ by high precision XRPD measurements. It was clarified that there was no any evidence for a new phase transition at low temperatures. Tetragonal distortion strain decreases with temperature increasing. A novel thermal expansion was observed, positive thermal expansion from-150℃ to room temperature (RT) and above 490℃, and the negative thermal expansion in the temperature range of RT-490℃. A big jump of thermal expansion coefficient is attributed to the tetragonal-cubic phase transition. A rationalization for the negative thermal expansion of PbTiO3 is due to the decrease of anion-anion repulsion as polyhedra become more regular at heating. The mechanisms of positive and negative thermal expansions were elucidated as the same nature in the homogenous tetragonal phase at present case.

  2. DSM-5 field survey

    DEFF Research Database (Denmark)

    Lochner, Christine; Grant, Jon E; Odlaug, Brian Lawrence

    2012-01-01

    The aim of this multisite field survey was to examine the DSM-IV-TR criteria, proposed DSM-5 diagnostic criteria, as well as a number of possible additional diagnostic criteria, in patients with hair-pulling disorder (HPD, or trichotillomania).......The aim of this multisite field survey was to examine the DSM-IV-TR criteria, proposed DSM-5 diagnostic criteria, as well as a number of possible additional diagnostic criteria, in patients with hair-pulling disorder (HPD, or trichotillomania)....

  3. Anomalous thermal expansion in $\\alpha$-titanium

    OpenAIRE

    Souvatzis, P.; O. Eriksson; M. I. Katsnelson

    2007-01-01

    We provide a complete quantitative explanation for the anisotropic thermal expansion of hcp Ti at low temperature. The observed negative thermal expansion along the c-axis is reproduced theoretically by means of a parameter free theory which involves both the electron and phonon contributions to the free energy. The thermal expansion of titanium is calculated and found to be negative along the c-axis for temperatures below $\\sim$ 170 K, in good agreement with observations. We have identified ...

  4. Hydration and Thermal Expansion in Anatase Nanoparticles.

    Science.gov (United States)

    Zhu, He; Li, Qiang; Ren, Yang; Fan, Longlong; Chen, Jun; Deng, Jinxia; Xing, Xianran

    2016-08-01

    A tunable thermal expansion is reported in nanosized anatase by taking advantage of surface hydration. The coefficient of thermal expansion of 4 nm TiO2 along a-axis is negative with a hydrated surface and is positive without a hydrated surface. High-energy synchrotron X-ray pair distribution function analysis combined with ab initio calculations on the specific hydrated surface are carried out to reveal the local structure distortion that is responsible for the unusual negative thermal expansion.

  5. Hydration and Thermal Expansion in Anatase Nanoparticles

    Energy Technology Data Exchange (ETDEWEB)

    Zhu, He [Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083 China; Li, Qiang [Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083 China; Ren, Yang [Argonne National Laboratory, X-Ray Science Division, Argonne IL 60439 USA; Fan, Longlong [Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083 China; Chen, Jun [Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083 China; Deng, Jinxia [Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083 China; Xing, Xianran [Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083 China

    2016-06-06

    A tunable thermal expansion is reported in nanosized anatase by taking advantage of surface hydration. The coefficient of thermal expansion of 4 nm TiO2 along a-axis is negative with a hydrated surface and is positive without a hydrated surface. High-energy synchrotron X-ray pair distribution function analysis combined with ab initio calculations on the specific hydrated surface are carried out to reveal the local structure distortion that is responsible for the unusual negative thermal expansion.

  6. GAUSSIAN WHITE NOISE CALCULUS OF GENERALIZED EXPANSION

    Institute of Scientific and Technical Information of China (English)

    陈泽乾

    2002-01-01

    A new framework of Gaussian white noise calculus is established, in line with generalized expansion in [3, 4, 7]. A suitable frame of Fock expansion is presented on Gaussian generalized expansion functionals being introduced here, which provides the integral kernel operator decomposition of the second quantization of Koopman operators for chaotic dynamical systems, in terms of annihilation operators (e)t and its dual, creation operators (e)*t.

  7. Structure and thermal expansion of liquid bismuth

    Directory of Open Access Journals (Sweden)

    Mudry S.

    2015-12-01

    Full Text Available Experimental structural data for liquid Bi were used for estimation of the main structure parameters as well as the thermal expansion coefficient both in supercooled and superheated temperature ranges. It was shown that the equilibrium melt had a positive thermal expansion coefficient within a temperature range upon melting and a negative one at higher temperatures. The former was related to structure changes upon melting, whereas the latter with topologic disordering upon further heating. It was found that the superheated melt had a negative thermal expansion coefficient. The results obtained from structural data were compared with the thermal expansion coefficient calculated from the data of density for liquid Bi.

  8. TAYLOR EXPANSION METHOD FOR NONLINEAR EVOLUTION EQUATIONS

    Institute of Scientific and Technical Information of China (English)

    HE Yin-nian

    2005-01-01

    A new numerical method of integrating the nonlinear evolution equations, namely the Taylor expansion method, was presented. The standard Galerkin method can be viewed as the 0-th order Taylor expansion method; while the nonlinear Galerkin method can be viewed as the 1-st order modified Taylor expansion method. Moreover, the existence of the numerical solution and its convergence rate were proven. Finally, a concrete example,namely, the two-dimensional Navier-Stokes equations with a non slip boundary condition,was provided. The result is that the higher order Taylor expansion method is of the higher convergence rate under some assumptions about the regularity of the solution.

  9. Transmission planning in the era of integrated resource planning: A survey of recent cases

    Energy Technology Data Exchange (ETDEWEB)

    Baldick, R.; Kahn, E.P.

    1992-09-01

    State action is critical to the expansion of the high-voltage transmission network, because regulated utilities must seek approval from utility commissions for proposals to site new lines. It is the purpose of this report to survey the regulatory treatment of issues that are unique to or ubiquitous in transmission planning and use. The authors review recent transmission siting cases to examine how the issues are presented to and resolved by state regulatory commissions and to provide a perspective for more general discussion of transmission policy. Their primary focus is on planning issues. Transmission capacity expansion is not typically treated in integrated resource planning. It is usually assumed that there is adequate transmission to achieve any particular plan. The authors believe that one important reason for this omission is the inherent complexity of transmission system expansion. Regulators and competitors may be at a serious disadvantage in negotiating or adjudicating specific transmission proposals with utilities, who generally have greater knowledge of both general technological considerations and case specifics. This problem of asymmetric information must be addressed at some level in planning or dispute resolution. However, they observe that explicit consideration of the information problem is absent from most regulatory and technical analysis of transmission. The goal of this survey is to share knowledge about the problems facing state regulators over the siting of new transmission facilities, and help to define constructive approaches to them.

  10. Modelling The Effects of Aggregate Size on Alkali Aggregate Reaction Expansion

    Directory of Open Access Journals (Sweden)

    N. Z. Sekrane

    2014-06-01

    Full Text Available This work aims at developing models to predict the potential expansion of concrete containing alkali-reactive aggregates. The paper gives measurements in order to provide experimental data concerning the effect of particle size of an alkali-reactive siliceous limestone on mortar expansion. Results show that no expansion was measured on the mortars using small particles (0.5-1.0 mm while the particles (1.0–2.0 mm gave the largest expansions (0.217%. Two models are proposed, the first one studies the correlations between the measured expansions and the size of aggregates, the second one calculates the thickness of the porous zone necessary to take again all the volume of the gel created.

  11. Cures for the Expansion Shock and the Shock Instability of the Roe Scheme

    CERN Document Server

    Li, Xue-song; Gu, Chun-wei

    2016-01-01

    A common defect of the Roe scheme is the production of non-physical expansion shock and shock instability. An improved method with several advantages was presented to suppress the shock instability. However, this method cannot prevent expansion shock and is incompatible with the traditional curing method for expansion shock. Therefore, the traditional curing mechanism is analyzed. The discussion explains the effectiveness of the traditional curing method and identifies several defects, one of which leads to incompatibility between curing the shock instability and expansion shock. Consequently, a new improved Roe scheme is proposed in this study. This scheme is concise, easy to implement, low computational cost, and robust. More importantly, the scheme can simultaneously cure the shock instability and expansion shock without additional costs.

  12. 77 FR 8852 - Proposed Agency Information Collection

    Science.gov (United States)

    2012-02-15

    ... buildings. 2. Performance Indicators Survey: Collects information regarding operational success factors to... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Office of Energy Efficiency and Renewable Energy Proposed Agency Information Collection AGENCY: Office of...

  13. 77 FR 4556 - Proposed Agency Information Collection

    Science.gov (United States)

    2012-01-30

    ... Research (SBIR) and Small Business Technology Transfer (STTR) Commercialization Survey will satisfy the...: Small Business Innovation Research (SBIR) and Small Business Technology Transfer (STTR... Management and Budget (OMB) for clearance, a proposal for collection of information under the provisions...

  14. The Effects of EITC Payment Expansion on Maternal Smoking

    OpenAIRE

    Susan L. Averett; Wang, Yang

    2012-01-01

    The Earned Income Tax Credit (EITC) is the largest anti-poverty program in the U.S. In 1993, the EITC benefit levels were changed significantly based on the number of children in the family such that families with two or more children experienced an exogenous expansion in their incomes. Using data from the National Longitudinal Survey of Youth 1979 cohort, we employ a triple differences plus Fixed-Effects framework to examine the effect of this change on the probability of smoking among low-e...

  15. 75 FR 57817 - Proposed Collection, Comment Request

    Science.gov (United States)

    2010-09-22

    ... Expenditure Surveys: The Quarterly Interview and the Diary. OMB Number: 1220-0050. Affected Public...-clearance consultation program to provide the general public and Federal agencies with an opportunity to... Expenditure Surveys: The Quarterly Interview and the Diary.'' A copy of the proposed information collection...

  16. 77 FR 35399 - Proposed Collection; Comment Request

    Science.gov (United States)

    2012-06-13

    ... collection project: ``Medical Expenditure Panel Survey (MEPS) Household Component and the MEPS Medical... public to comment on this proposed information collection. DATES: Comments on this notice must be... Project Medical Expenditure Panel Survey (MEPS) Household Component and the MEPS Medical Provider...

  17. 77 FR 54614 - Proposed Collection, Comment Request

    Science.gov (United States)

    2012-09-05

    ... general public and Federal agencies with an opportunity to comment on proposed and/or continuing... Statistics (BLS) is soliciting comments concerning the revision of the ``The Consumer Expenditure Surveys... Consumer Expenditure (CE) Surveys collect data on consumer expenditures, demographic information, and...

  18. The optimizied expansion method for wavefield extrapolation

    KAUST Repository

    Wu, Zedong

    2013-01-01

    Spectral methods are fast becoming an indispensable tool for wave-field extrapolation, especially in anisotropic media, because of its dispersion and artifact free, as well as highly accurate, solutions of the wave equation. However, for inhomogeneous media, we face difficulties in dealing with the mixed space-wavenumber domain operator.In this abstract, we propose an optimized expansion method that can approximate this operator with its low rank representation. The rank defines the number of inverse FFT required per time extrapolation step, and thus, a lower rank admits faster extrapolations. The method uses optimization instead of matrix decomposition to find the optimal wavenumbers and velocities needed to approximate the full operator with its low rank representation.Thus,we obtain more accurate wave-fields using lower rank representation, and thus cheaper extrapolations. The optimization operation to define the low rank representation depends only on the velocity model, and this is done only once, and valid for a full reverse time migration (many shots) or one iteration of full waveform inversion. Applications on the BP model yielded superior results than those obtained using the decomposition approach. For transversely isotopic media, the solutions were free of the shear wave artifacts, and does not require that eta>0.

  19. Magnetic Clouds: Global and local expansion

    Science.gov (United States)

    Gulisano, Adriana; Demoulin, Pascal; Soledad Nakwacki, Ms Maria; Dasso, Sergio; Emilia Ruiz, Maria

    Magnetic clouds (MCs) are magnetized objects forming flux ropes, which are expelled from the Sun and travel through the heliosphere, transporting important amounts of energy, mass, magnetic flux, and magnetic helicity from the Sun to the interplanetary medium. To know the detailed dynamical evolution of MCs is very useful to improve the knowledge of solar processes, for instance from linking a transient solar source with its interplanetary manifestation. During its travel, and mainly due to the decrease of the total (magnetic plus thermal) pressure in the surrounding solar wind, MCs are objects in expansion. However, the detailed magnetic structure and the dynamical evolution of MCs is still not fully known. Even the identification of their boundaries is an open question in some cases. In a previous work we have shown that from onepoint observations of the bulk velocity profile, it is possible to infer the 'local' expansion rate for a given MC, i.e., the expansion rate while the MC is observed by the spacecraft. By the another hand, and from the comparison of sizes for different MCs observed at different heliodistances, it is possible to quantify an 'average' expansion law (i.e., a global expansion). In this work, in order to study the variability of the 'local' expansion with respect to the 'average' expansion of MCs during their travel, we present results and a comparison between both approaches. We make a detailed study of one-point observations (magnetic and bulk velocity) using a set of MCs and we get the 'local' expansion rate for each studied event. We compare the obtained 'local' expansion rates with the 'average' expansion law, and also with the expansion rates for the stationary solar wind.

  20. 77 FR 25994 - Notice of Proposed Information Collection Requests; Institute of Education Sciences; Pell Grant...

    Science.gov (United States)

    2012-05-02

    ... Doc No: 2012-10621] DEPARTMENT OF EDUCATION Notice of Proposed Information Collection Requests; Institute of Education Sciences; Pell Grant Expansions Under the Pell Grant Expansions (PGE) Study 2012... the proposed information collection request may be accessed from http://edicsweb.ed.gov , by...

  1. Primordial vorticity and gradient expansion

    CERN Document Server

    Giovannini, Massimo

    2012-01-01

    The evolution equations of the vorticities of the electrons, ions and photons in a pre-decoupling plasma are derived, in a fully inhomogeneous geometry, by combining the general relativistic gradient expansion and the drift approximation within the Adler-Misner-Deser decomposition. The vorticity transfer between the different species is discussed in this novel framework and a set of general conservation laws, connecting the vorticities of the three-component plasma with the magnetic field intensity, is derived. After demonstrating that a source of large-scale vorticity resides in the spatial gradients of the geometry and of the electromagnetic sources, the total vorticity is estimated to lowest order in the spatial gradients and by enforcing the validity of the momentum constraint. By acknowledging the current bounds on the tensor to scalar ratio in the (minimal) tensor extension of the $\\Lambda$CDM paradigm the maximal comoving magnetic field induced by the total vorticity turns out to be, at most, of the or...

  2. New approach of (G′/G-expansion method and new approach of generalized (G′/G-expansion method for nonlinear evolution equation

    Directory of Open Access Journals (Sweden)

    Hasibun Naher

    2013-03-01

    Full Text Available In this article, new (G′/G-expansion method and new generalized (G′/G-expansion method is proposed to generate more general and abundant new exact traveling wave solutions of nonlinear evolution equations. The novelty and advantages of these methods is exemplified by its implementation to the KdV equation. The results emphasize the power of proposed methods in providing distinct solutions of different physical structures in nonlinear science. Moreover, these methods could be more effectively used to deal with higher dimensional and higher order nonlinear evolution equations which frequently arise in many scientific real time application fields.

  3. Negative thermal expansion materials: technological key for control of thermal expansion

    OpenAIRE

    Koshi Takenaka

    2012-01-01

    Most materials expand upon heating. However, although rare, some materials contract upon heating. Such negative thermal expansion (NTE) materials have enormous industrial merit because they can control the thermal expansion of materials. Recent progress in materials research enables us to obtain materials exhibiting negative coefficients of linear thermal expansion over −30 ppm K−1. Such giant NTE is opening a new phase of control of thermal expansion in composites. Specifically examining pra...

  4. The Expansion Postponement in Pure Type Systems

    Institute of Scientific and Technical Information of China (English)

    宋方敏

    1997-01-01

    The expansion postponement problem in Pure Type Systems is an open problem raised by R.Pollack in 1992.In this paper,the author presents a set of necessary and sufficient conditions for this problem and a set of sufficient conditions for it.The author also gives some properties for pure typ systems without the expansion rule.

  5. Multipole expansion method for supernova neutrino oscillations

    Energy Technology Data Exchange (ETDEWEB)

    Duan, Huaiyu; Shalgar, Shashank, E-mail: duan@unm.edu, E-mail: shashankshalgar@unm.edu [Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131 (United States)

    2014-10-01

    We demonstrate a multipole expansion method to calculate collective neutrino oscillations in supernovae using the neutrino bulb model. We show that it is much more efficient to solve multi-angle neutrino oscillations in multipole basis than in angle basis. The multipole expansion method also provides interesting insights into multi-angle calculations that were accomplished previously in angle basis.

  6. Finnish Higher Education Expansion and Regional Policy

    Science.gov (United States)

    Saarivirta, Toni

    2010-01-01

    This paper concentrates on the expansion of Finnish higher education between the 1960s and 1970s, exposes its background in the light of the policy decisions that were made, compares the unique features of this expansion with those of certain other countries, discusses the impact of the controlled "top down" governance of higher…

  7. Flash Expansion Threshold in Whirligig Swarms.

    Directory of Open Access Journals (Sweden)

    William L Romey

    Full Text Available In the selfish herd hypothesis, prey animals move toward each other to avoid the likelihood of being selected by a predator. However, many grouped animals move away from each other the moment before a predator attacks. Very little is known about this phenomenon, called flash expansion, such as whether it is triggered by one individual or a threshold and how information is transferred between group members. We performed a controlled experiment with whirligig beetles in which the ratio of sighted to unsighted individuals was systematically varied and emergent flash expansion was measured. Specifically, we examined: the percentage of individuals in a group that startled, the resulting group area, and the longevity of the flash expansion. We found that one or two sighted beetles in a group of 24 was not enough to cause a flash expansion after a predator stimulus, but four sighted beetles usually initiated a flash expansion. Also, the more beetles that were sighted the larger the resulting group area and the longer duration of the flash expansion. We conclude that flash expansion is best described as a threshold event whose adaptive value is to prevent energetically costly false alarms while quickly mobilizing an emergent predator avoidance response. This is one of the first controlled experiments of flash expansion, an important emergent property that has applications to understanding collective motion in swarms, schools, flocks, and human crowds. Also, our study is a convincing demonstration of social contagion, how the actions of one individual can pass through a group.

  8. A reduced volumetric expansion factor plot

    Science.gov (United States)

    Hendricks, R. C.

    1979-01-01

    A reduced volumetric expansion factor plot has been constructed for simple fluids which is suitable for engineering computations in heat transfer. Volumetric expansion factors have been found useful in correlating heat transfer data over a wide range of operating conditions including liquids, gases and the near critical region.

  9. The heavy quark expansion of QCD

    Energy Technology Data Exchange (ETDEWEB)

    Falk, A.F. [Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Physics and Astronomy

    1997-06-01

    These lectures contain an elementary introduction to heavy quark symmetry and the heavy quark expansion. Applications such as the expansion of heavy meson decay constants and the treatment of inclusive and exclusive semileptonic B decays are included. Heavy hadron production via nonperturbative fragmentation processes is also discussed. 54 refs., 7 figs.

  10. Expansion techniques for collisionless stellar dynamical simulations

    Energy Technology Data Exchange (ETDEWEB)

    Meiron, Yohai [Kavli Institute for Astronomy and Astrophysics at Peking University, Beijing 100871 (China); Li, Baile; Holley-Bockelmann, Kelly [Department of Physics and Astronomy, Vanderbilt University, Nashville, TN 37235 (United States); Spurzem, Rainer, E-mail: ymeiron@pku.edu.cn [National Astronomical Observatories of China, Chinese Academy of Sciences, Beijing 100012 (China)

    2014-09-10

    We present graphics processing unit (GPU) implementations of two fast force calculation methods based on series expansions of the Poisson equation. One method is the self-consistent field (SCF) method, which is a Fourier-like expansion of the density field in some basis set; the other method is the multipole expansion (MEX) method, which is a Taylor-like expansion of the Green's function. MEX, which has been advocated in the past, has not gained as much popularity as SCF. Both are particle-field methods and optimized for collisionless galactic dynamics, but while SCF is a 'pure' expansion, MEX is an expansion in just the angular part; thus, MEX is capable of capturing radial structure easily, while SCF needs a large number of radial terms. We show that despite the expansion bias, these methods are more accurate than direct techniques for the same number of particles. The performance of our GPU code, which we call ETICS, is profiled and compared to a CPU implementation. On the tested GPU hardware, a full force calculation for one million particles took ∼0.1 s (depending on expansion cutoff), making simulations with as many as 10{sup 8} particles fast for a comparatively small number of nodes.

  11. CONCEPT OF TISSUE EXPANSION IN RECONSTRUCTIVE SURGERY

    Directory of Open Access Journals (Sweden)

    Sheeja Rajan

    2015-01-01

    Full Text Available BACKGROUND: Tissue expansion is a unique reconstructive option in the armamentarium of a reconstructive surgeon whereby skin and soft tissues of our body can be stretched to large dimensions for wound coverage. The basis for such stretch ability lies in the inherent viscoelastic properties of skin. AIMS: This paper explores the prospects of using tissue expanders to reconstruct defects arising due to a kaleidoscope of pathological conditions including burns scars, post traumatic scars, congenital anomalies like hairy nevus, involutional scars in haemangioma as well as in post mastectomy breast reconstruction . MATERIALS AND METHODS: Our experience with tissue expansion in 14 patients over 24 months is presented. Tissue expanders made of silicone in sizes from 100 - 250ml, of round, rectangular or croissant (crescent shapes have been used. Areas expanded include scalp, forehead, neck, abdomen and forearm. Multiple expanders have been used when possible. Average expansion time was 8 - 12 weeks and the expanded tissue was transferred as advancement flaps. RESULTS AND CONCLUSIONS: Tissue expansion was successfully completed in 13 patients. Expansion had to be aborted in 1 paediatric patient undergoing neck expansion due to infection. Implant failure occurred in 1 patient during serial expansion. Nevertheless, in our experience tissue expan sion is an invaluable reconstructive tool to give excellent donor tissue with colour and texture match in countless situations demanding aesthetic and functional reconstruction. KEYWORDS: Burns scars, Reconstruction, Tissue expansion .

  12. Virial expansion coefficients in the harmonic approximation

    DEFF Research Database (Denmark)

    R. Armstrong, J.; Zinner, Nikolaj Thomas; V. Fedorov, D.

    2012-01-01

    The virial expansion method is applied within a harmonic approximation to an interacting N-body system of identical fermions. We compute the canonical partition functions for two and three particles to get the two lowest orders in the expansion. The energy spectrum is carefully interpolated...

  13. Perturbative expansion of Chern-Simons theory

    OpenAIRE

    SAWON, Justin

    2005-01-01

    An overview of the perturbative expansion of the Chern--Simons path integral is given. The main goal is to describe how trivalent graphs appear: as they already occur in the perturbative expansion of an analogous finite-dimensional integral, we discuss this case in detail.

  14. Anisotropic expansion and SNIa: An open issue

    Directory of Open Access Journals (Sweden)

    Jose Beltrán Jiménez

    2015-02-01

    Full Text Available We review the appropriateness of using SNIa observations to detect potential signatures of anisotropic expansion in the Universe. We focus on Union2 and SNLS3 SNIa datasets and use the hemispherical comparison method to detect possible anisotropic features. Unlike some previous works where non-diagonal elements of the covariance matrix were neglected, we use the full covariance matrix of the SNIa data, thus obtaining more realistic and not underestimated errors. As a matter of fact, the significance of previously claimed detections of a preferred direction in the Union2 dataset completely disappears once we include the effects of using the full covariance matrix. Moreover, we also find that such a preferred direction is aligned with the orthogonal direction of the SDSS observational plane and this suggests a clear indication that the SDSS subsample of the Union2 dataset introduces a significant bias, making the detected preferred direction unphysical. We thus find that current SNIa surveys are inappropriate to test anisotropic features due to their highly non-homogeneous angular distribution in the sky. In addition, after removal of the highest inhomogeneous sub-samples, the number of SNIa is too low. Finally, we take advantage of the particular distribution of SNLS SNIa sub-sample in the SNLS3 data set, in which the observations were taken along four different directions. We fit each direction independently and find consistent results at the 1σ level. Although the likelihoods peak at relatively different values of Ωm, the low number of data along each direction gives rise to large errors so that the likelihoods are sufficiently broad as to overlap within 1σ.

  15. Applications of F-expansion to Periodic Wave Solutions for Variant Boussinesq Equations

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    We present an F-expansion method for finding periodic wave solutions of nonlinear evolution equations in mathematical physics, which can be thought of as a concentration of extended Jacobi elliptic function expansion method proposed recently. By using the F-expansion, without calculating Jacobi elliptic functions, we obtain simultaneously many periodic wave solutions expressed by various Jacobi elliptic functions for the variant Boussinesq equations. When the modulus m approaches 1 and 0, the hyperbolic function solutions (including the solitary wave solutions) and trigonometric solutions are also given respectively.

  16. Applications of F-expansion method to the coupled KdV system

    Institute of Scientific and Technical Information of China (English)

    Li Bao-An; Wang Ming-Liang

    2005-01-01

    An extended F-expansion method for finding periodic wave solutions of nonlinear evolution equations in mathematical physics is presented, which can be thought of as a concentration of extended Jacobi elliptic function expansion method proposed more recently. By using the homogeneous balance principle and the extended F-expansion, more periodic wave solutions expressed by Jacobi elliptic functions for the coupled KdV equations are derived. In the limit cases, the solitary wave solutions and the other type of travelling wave solutions for the system are also obtained.

  17. Development of Soda Residue Concrete Expansion Agent

    Institute of Scientific and Technical Information of China (English)

    WANG Bao-min; WANG Li-jiu; M F Mohd Zain; F C Lai

    2003-01-01

    A new type of concrete expansion agent has been successfully developed for the first time in the world by utilizing an industrial waste residue-soda residue and an industrial wasteliquor.Adding 3%-6% of the agent into Portland cement enables a shrinkage-compensating concrete to be prepared.Mortar and concrete containing this expansion agent have better shrinkage-compensating and mechanical properties.The raw materials component,production process,technical properties,micro-analysis of mortar made with this expansion agent,mechanism of expansion and research results are described in this article.The experimental results show that the new type of concrete expansion agent accords with the standard and its main mineral component is xCaO-ySO3-zAl2O3.

  18. Maxwell superalgebras and Abelian semigroup expansion

    Energy Technology Data Exchange (ETDEWEB)

    Concha, P.K.; Rodríguez, E.K. [Departamento de Física, Universidad de Concepción, Casilla 160-C, Concepción (Chile); Dipartimento di Scienza Applicata e Tecnologia (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino (Italy); Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Torino, Via Pietro Giuria, 1, 10125 Torino (Italy)

    2014-09-15

    The Abelian semigroup expansion is a powerful and simple method to derive new Lie algebras from a given one. Recently it was shown that the S-expansion of so(3,2) leads us to the Maxwell algebra M. In this paper we extend this result to superalgebras, by proving that different choices of abelian semigroups S lead to interesting D=4 Maxwell Superalgebras. In particular, the minimal Maxwell superalgebra sM and the N-extended Maxwell superalgebra sM{sup (N)} recently found by the Maurer–Cartan expansion procedure, are derived alternatively as an S-expansion of osp(4|N). Moreover, we show that new minimal Maxwell superalgebras type sM{sub m+2} and their N-extended generalization can be obtained using the S-expansion procedure.

  19. Maxwell superalgebras and Abelian semigroup expansion

    Directory of Open Access Journals (Sweden)

    P.K. Concha

    2014-09-01

    Full Text Available The Abelian semigroup expansion is a powerful and simple method to derive new Lie algebras from a given one. Recently it was shown that the S-expansion of so(3,2 leads us to the Maxwell algebra M. In this paper we extend this result to superalgebras, by proving that different choices of abelian semigroups S lead to interesting D=4 Maxwell Superalgebras. In particular, the minimal Maxwell superalgebra sM and the N-extended Maxwell superalgebra sM(N recently found by the Maurer–Cartan expansion procedure, are derived alternatively as an S-expansion of osp(4|N. Moreover, we show that new minimal Maxwell superalgebras type sMm+2 and their N-extended generalization can be obtained using the S-expansion procedure.

  20. A Novel Pilot Expansion Approach for MIMO Channel Estimation

    Directory of Open Access Journals (Sweden)

    Ming Fei SIYAU

    2015-05-01

    Full Text Available A training-based MIMO channel estimation scheme is presented to operate in severe frequency and time selective fading channels. Besides the new pilot bits designed from the ‘Paley-Hadamard’ matrix to exploit its orthogonal and ‘Toeplitz-like’ structures and minimising its pilot length, a novel pilot expansion technique is proposed to estimate the length of the channel impulse response, by flexibly extending its pilot length as required in order to capture the number of multipath existed within the MIMO channel. The pilot expansion can also help to deduce the initial channel variation and its Doppler rate which can be subsequently applied for MIMO channel tracking using decision feedback Kalman filter during the data payload.

  1. Finite-basis-set expansion methods for scattering problems

    Energy Technology Data Exchange (ETDEWEB)

    Ladanyi, K.; Levay, P.; Apagyi, B.

    1988-10-01

    A wide variety of finite-basis-set expansion methods is applied to electron--hydrogen-atom scattering in the static-exchange approximation. All these methods are based on the Lippmann-Schwinger formalism. A careful analysis of the numerical results is presented with the aim of selecting efficient approaches to the solution of realistic electron-atom (and electron-molecule) scattering problems. The results show that the efficiency of the expansion methods may depend sensitively on the characteristics of the interaction terms. Some difficulties of the simple method of moments are pointed out. A particular least-squares method is proposed to avoid the spurious singularities encountered in applications of the Schwinger variational method to singlet scattering processes.

  2. Transmission Network Expansion Planning Considering Desired Generation Security

    Directory of Open Access Journals (Sweden)

    Samaneh GOLESTANI

    2014-02-01

    Full Text Available Transmission Network Expansion Planning (TNEP is an important part of power system planning in both conventional and new structured power market. Its goal is to minimize the network construction and operational cost while satisfying the demand increase, considering technical and economic conditions. Planning algorithm in this paper consisted of two stages. The former specifies highly uncertain lines and probability of congestion, considering desired generation security level (e.g. N-2 generation security level. The latter determines the optimal expansion capacity of existing lines. Splitting required capacity for reinforcement of weak lines due to desired generation security level simplifies the TNEP problem. In addition, it monitors the impact of generation uncertainty on transmission lines. Simulation results of the proposed idea are presented for IEEE-RTS-24bus network.

  3. Review of methods for predicting in situ volume change movement of expansive soil over time

    OpenAIRE

    Hana H. Adem; Sai K. Vanapalli

    2015-01-01

    The soil movement information over time is required for the design of foundations placed in expansive soils. This information is also helpful for the assessment of pre-wetting and controlled wetting mitigation alternatives for expansive soils. Several researchers during the past fifteen years have proposed different methods for the prediction of the soil movements over time. The available methods can be categorized into (i) consolidation theory-based methods, (ii) water content-based methods,...

  4. A novel (G'/G)-expansion method and its application to the Boussinesq equation

    Science.gov (United States)

    Md. Nur, Alam; Md., Ali Akbar; Syed Tauseef, Mohyud-Din

    2014-02-01

    In this article, a novel (G'/G)-expansion method is proposed to search for the traveling wave solutions of nonlinear evolution equations. We construct abundant traveling wave solutions involving parameters to the Boussinesq equation by means of the suggested method. The performance of the method is reliable and useful, and gives more general exact solutions than the existing methods. The new (G'/G)-expansion method provides not only more general forms of solutions but also cuspon, peakon, soliton, and periodic waves.

  5. Continued-fraction expansion of eigenvalues of generalized evolution operators in terms of periodic orbits

    CERN Document Server

    Fujisaka, H; Eckhardt, B; Fujisaka, Hirokazu; Shigematsu, Hideto; Eckhardt, Bruno

    1993-01-01

    Abstract: A new expansion scheme to evaluate the eigenvalues of the generalized evolution operator (Frobenius-Perron operator) $H_{q}$ relevant to the fluctuation spectrum and poles of the order-$q$ power spectrum is proposed. The ``partition function'' is computed in terms of unstable periodic orbits and then used in a finite pole approximation of the continued fraction expansion for the evolution operator. A solvable example is presented and the approximate and exact results are compared; good agreement is found.

  6. Socio-economic and ecological impacts of global protected area expansion plans

    OpenAIRE

    Visconti, Piero; Bakkenes, Michel; Smith?, Robert J.; Joppa, Lucas; Sykes, Rachel E.

    2015-01-01

    Several global strategies for protected area (PA) expansion have been proposed to achieve the Convention on Biological Diversity's Aichi target 11 as a means to stem biodiversity loss, as required by the Aichi target 12. However, habitat loss outside PAs will continue to affect habitats and species, and PAs may displace human activities into areas that might be even more important for species persistence. Here we measure the expected contribution of PA expansion strategies to Aichi target 12 ...

  7. 77 FR 43589 - Freeport LNG Development, L.P., Freeport LNG Expansion, L.P., FLNG Liquefaction LLC; Supplemental...

    Science.gov (United States)

    2012-07-25

    ... Energy Regulatory Commission Freeport LNG Development, L.P., Freeport LNG Expansion, L.P., FLNG... proposed by Freeport LNG Development, L.P., Freeport LNG Expansion, L.P, and FLNG Liquefaction LLC... existing liquefied natural gas (LNG) import terminal on Quintana Island in Brazoria County, Texas....

  8. 76 FR 53440 - Freeport LNG Development, LP; Freeport LNG Expansion, LP; FLNG Liquefaction LLC; Notice of Intent...

    Science.gov (United States)

    2011-08-26

    ... Energy Regulatory Commission Freeport LNG Development, LP; Freeport LNG Expansion, LP; FLNG Liquefaction... construction and operation of facilities proposed by Freeport LNG Development, LP, Freeport LNG Expansion, LP... liquefied natural gas (LNG) import terminal on Quintana Island in Brazoria County, Texas. The Project...

  9. Query Expansion Using Heterogeneous Thesauri.

    Science.gov (United States)

    Mandala, Rila; Tokunaga, Takenobu; Tanaka, Hozumi

    2000-01-01

    Proposes a method to improve the performance of information retrieval systems by expanding queries using heterogeneous thesauri. Experiments show that using heterogeneous thesauri with an appropriate weighting method results in better retrieval performance than using only one type of thesaurus. (Author/LRW)

  10. Query Expansion Using Heterogeneous Thesauri.

    Science.gov (United States)

    Mandala, Rila; Tokunaga, Takenobu; Tanaka, Hozumi

    2000-01-01

    Proposes a method to improve the performance of information retrieval systems by expanding queries using heterogeneous thesauri. Experiments show that using heterogeneous thesauri with an appropriate weighting method results in better retrieval performance than using only one type of thesaurus. (Author/LRW)

  11. Non-integer expansion embedding techniques for reversible image watermarking

    Science.gov (United States)

    Xiang, Shijun; Wang, Yi

    2015-12-01

    This work aims at reducing the embedding distortion of prediction-error expansion (PE)-based reversible watermarking. In the classical PE embedding method proposed by Thodi and Rodriguez, the predicted value is rounded to integer number for integer prediction-error expansion (IPE) embedding. The rounding operation makes a constraint on a predictor's performance. In this paper, we propose a non-integer PE (NIPE) embedding approach, which can proceed non-integer prediction errors for embedding data into an audio or image file by only expanding integer element of a prediction error while keeping its fractional element unchanged. The advantage of the NIPE embedding technique is that the NIPE technique can really bring a predictor into full play by estimating a sample/pixel in a noncausal way in a single pass since there is no rounding operation. A new noncausal image prediction method to estimate a pixel with four immediate pixels in a single pass is included in the proposed scheme. The proposed noncausal image predictor can provide better performance than Sachnev et al.'s noncausal double-set prediction method (where data prediction in two passes brings a distortion problem due to the fact that half of the pixels were predicted with the watermarked pixels). In comparison with existing several state-of-the-art works, experimental results have shown that the NIPE technique with the new noncausal prediction strategy can reduce the embedding distortion for the same embedding payload.

  12. Rapid maxillary expansion and obstructive sleep apnea: A review and meta-analysis

    Science.gov (United States)

    Zancanella, Edilson; Crespo, Agrício-Nubiato

    2016-01-01

    Background OSAS during childhood leads to significant physical and neuropsychomotor impairment. Thus, it needs to be recognized and treated early in order to avoid or attenuate the chronic problems associated with OSAS, which are deleterious to a child’s development. Adenotonsillectomy and, in select cases, continuous positive airwaypressure (CPAP) have been the preferred treatments for OSAS in children, and yet they are ineffective at fully ameliorating the disease. Minimally invasive treatments have recently been proposed, comprising intra-oral and extra-oral devices as well as speech therapy. Objetive: to conduct a meta-analysis on studies from around the world that used rapid maxillary expansion (RME) to treat OSAS in children. Material and Methods We performed a meta-analysis of studies using RME for OSA treatment in children. A literature survey was conductedusing PubMed and Medline for English articles published up to December 2014 with the following descriptors: Sleep Apnea, Obstructive, Children, Treatment, Orthodontic, Othopaedic, Maxillaryexpansion. Studies were included in the meta-analysisif they were case-controlled studies, randomized, and involved non-syndromic children aged 0 to 12years old diagnosed with OSA by the polysomnography apnea-hypopnea index (AHI) before and after the intervention, submitted RME only. Results In all, 10 articles conformed to the inclusion criteria and were included in this meta-analysis. The total sample size across all these articles was 215 children, having a mean age of 6.7 years,of whom58.6%were male. The mean AHI during the follow-up was -6.86 (p <0.0001). Conclusions We concluded that rapid maxillary expansion (RME) in children with OSAS appears to be an effective treatment for this syndrome. Further randomized clinical studies are needed to determine the effectiveness of RME in adults. Key words:Rapid maxillary expansión, obstructive sleep apnea, meta-analysis. PMID:27031063

  13. Age, size, and position of H ii regions in the Galaxy. Expansion of ionized gas in turbulent molecular clouds

    CERN Document Server

    Tremblin, P; Didelon, P; Raga, A C; Minier, V; Ntormousi, E; Pettitt, A; Pinto, C; Samal, M; Schneider, N; Zavagno, A

    2014-01-01

    This work aims at improving the current understanding of the interaction between H ii regions and turbulent molecular clouds. We propose a new method to determine the age of a large sample of OB associations by investigating the development of their associated H ii regions in the surrounding turbulent medium. Using analytical solutions, one-dimensional (1D), and three-dimensional (3D) simulations, we constrained the expansion of the ionized bubble depending on the turbulent level of the parent molecular cloud. A grid of 1D simulations was then computed in order to build isochrone curves for H ii regions in a pressure-size diagram. This grid of models allowed to date large sample of OB associations and was used on the H ii Region Discovery Survey (HRDS). Analytical solutions and numerical simulations showed that the expansion of H ii regions is slowed down by the turbulence up to the point where the pressure of the ionized gas is in a quasi-equilibrium with the turbulent ram pressure. Based on this result, we ...

  14. Proposal - Implementation of environmental DNA surveys and integration of standardized protocols for a baseline biometric assessment of fishes in the Savannah National Wildlife Refuge and adjacent Little Back River.

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This is a proposal to develop eDNA protocols for aquatic invasive species of fish and test them at the Savannah National Wildlife Refuge to see if these species are...

  15. Shrinkage and Expansive Strain of Concrete with Fly Ash and Expansive Agent

    Institute of Scientific and Technical Information of China (English)

    GAO Peiwei; LU Xiaolin; TANG Mingshu

    2009-01-01

    The effects of fly ash and MgO-type expansive agent on the shrinkage and expan-sive strain of concrete with high magnesia cement were investigated. The results show that high volumes of fly ash may reduce the shrinkage strain of concrete and inhibit the expansive strain of concrete with MgO-type expansive agent, but can not eliminate the shrinkage of concrete. MgO-type expansive agent may produce expansive strain and compensate the shrinkage strain of concrete, re-lieve the cracking risk, but the hydration product of magnesia tends to get together in paste and pro-duce expansive cracking of concrete with high magnesia content according to SEM observation.

  16. 75 FR 55612 - Proposed Collection, Comment Request

    Science.gov (United States)

    2010-09-13

    ... ``Telephone Point of Purchase Survey.'' A copy of the proposed information collection request (ICR) can be.../or included in the request for Office of Management and Budget approval of the information collection... of Labor Statistics Proposed Collection, Comment Request ACTION: Notice. SUMMARY: The Department of...

  17. 78 FR 50449 - Proposed Collection, Comment Request

    Science.gov (United States)

    2013-08-19

    ... ``Telephone Point of Purchase Survey.'' A copy of the proposed information collection request (ICR) can be... request for Office of Management and Budget approval of the information collection request; they also will... of Labor Statistics Proposed Collection, Comment Request ACTION: Notice. SUMMARY: The Department of...

  18. Expansion Techniques for Collisionless Stellar Dynamical Simulations

    CERN Document Server

    Meiron, Yohai; Holley-Bockelmann, Kelly; Spurzem, Rainer

    2014-01-01

    We present GPU implementations of two fast force calculation methods, based on series expansions of the Poisson equation. One is the Self-Consistent Field (SCF) method, which is a Fourier-like expansion of the density field in some basis set; the other is the Multipole Expansion (MEX) method, which is a Taylor-like expansion of the Green's function. MEX, which has been advocated in the past, has not gained as much popularity as SCF. Both are particle-field method and optimized for collisionless galactic dynamics, but while SCF is a "pure" expansion, MEX is an expansion in just the angular part; it is thus capable of capturing radial structure easily, where SCF needs a large number of radial terms. We show that despite the expansion bias, these methods are more accurate than direct techniques for the same number of particles. The performance of our GPU code, which we call ETICS, is profiled and compared to a CPU implementation. On the tested GPU hardware, a full force calculation for one million particles took...

  19. Critical exponents from large mass expansion

    CERN Document Server

    Yamada, Hirofumi

    2014-01-01

    We perform estimation of critical exponents via large mass expansion under crucial help of delta-expansion. We address to the three dimensional Ising model at high temperature and estimate omega, the correction-to-scaling exponent, nu, eta and gamma in unbiased and self-contained manner. The results read at the highest 25th order expansion omega=0.8002, nu=0.6295, eta=0.0369 and gamma=1.2357. Estimation biased by omega=0.84(4) is also performed and proved to be in agreement with the summary of recent literatures.

  20. ON CONVERGENCE OF WAVELET PACKET EXPANSIONS

    Institute of Scientific and Technical Information of China (English)

    Morten Nielsen

    2002-01-01

    It is well known that the-Walsh-Fourier expansion of a function from the block space ([0, 1 ) ), 1 <q≤∞, converges pointwise a.e. We prove that the same result is true for the expansion of a function from in certain periodixed smooth periodic non-stationary wavelet packets bases based on the Haar filters. We also consider wavelet packets based on the Shannon filters and show that the expansion of Lp-functions, 1<p<∞, converges in norm and pointwise almost everywhere.

  1. Does cosmological expansion affect local physics?

    CERN Document Server

    Giulini, Domenico

    2013-01-01

    In this contribution I wish to address the question whether, and how, the global cosmological expansion influences local physics. I argue that a pseudo Newtonian picture can be quite accurate if ``expansion'' is taken to be an attribute of the inertial structure rather than of ``space'' in some substantivalist sense. This contradicts the often-heard suggestion to imagine cosmological expansion as that of ``space itself''. Regarding General Relativity, I emphasise the need for proper geometric characterisations in order to meaningfully compare localised systems in different spacetimes, like black holes in static and expanding environments. Examples of this sort are discussed in some detail to clearly map out the problems.

  2. Some Improved Nonperturbative Bounds for Fermionic Expansions

    Energy Technology Data Exchange (ETDEWEB)

    Lohmann, Martin, E-mail: marlohmann@gmail.com [Universita di Roma Tre, Dipartimento di Matematica (Italy)

    2016-06-15

    We reconsider the Gram-Hadamard bound as it is used in constructive quantum field theory and many body physics to prove convergence of Fermionic perturbative expansions. Our approach uses a recursion for the amplitudes of the expansion, discovered in a model problem by Djokic (2013). It explains the standard way to bound the expansion from a new point of view, and for some of the amplitudes provides new bounds, which avoid the use of Fourier transform, and are therefore superior to the standard bounds for models like the cold interacting Fermi gas.

  3. Multiobjective transmission expansion planning considering security and demand uncertainty

    Directory of Open Access Journals (Sweden)

    Ricardo Andrés Bolaños Ocampo

    2010-05-01

    Full Text Available This paper presents a methodology for resolving the transmission expansion planning problem by considering single contingency criteria (N-1. Each bus bar in the power system considered future demand uncertainty. The planning problem was divided into an investment problem (calculating investment costs and an operative problem (resolving power flows. A modified evolutionary elitist non-dominated sorted genetic algorithm (NSGA-II was used for resolving the investment problem, determining several in- vestment proposals where feasibility was evaluated by solving the operative problem. On the other hand, a high order interior point (HOIP method was proposed for solving load flow problems. The methodology was tested by using two systems found in the specialised literature: IEEE-24 bus and Garver or IEEE-6 bus systems. The results, when compared with traditional ones, sho- wed the proposed method’s power and the multi-objective technique’s convenience.

  4. Proposta metodológica para o módulo de consumo alimentar pessoal na pesquisa brasileira de orçamentos familiares Methodological proposal for the individual food intake module of the Brazilian household budget survey

    Directory of Open Access Journals (Sweden)

    Edna Massae Yokoo

    2008-12-01

    Expenditure Study done from 1974 to 1975. Although useful, national food consumption studies are expensive and only a few countries can conduct them regularly. Nonetheless, household budget surveys are important sources of data on the availability of food at home determined by records of foods purchased. Recent changes in consumption habits, particularly eating out, limit the use of data from household budget surveys to estimate food intake. Thus, the Brazilian government suggested that the next household budget survey to be done in 2008-2009 include a module on individual food consumption. Information on individual food intake will be used to supplement the data regarding food purchases. The objective of this study is to report the development of the methodology to be used in the module of individual food consumption of the household budget survey of 2008-2009. Budget data will be combined with intake data to estimate the usual individual food consumption.

  5. Proposta de ampliação do programa de coleta seletiva para o município de São Jorge do Ivaí no Estado do Paraná. = Proposed expansion of a selective collection program for the São Jorge of Ivaí city, Paraná, Brazil.

    Directory of Open Access Journals (Sweden)

    Ricardo Massulo Albertin

    2011-04-01

    Full Text Available Neste trabalho são apresentados os resultados relativos à proposta para a ampliação do programa de coleta seletiva no município de São Jorge do Ivaí, estado do Paraná, Brasil. A metodologia contempla aplicação de questionário, visita ao barracão de triagem, caracterização gravimétrica de resíduos e confecção de mapa de zoneamento da coleta seletiva. A coleta seletiva atual foi implementada pela prefeitura municipal por meio de um projeto piloto na região central do município. Estima-se a coleta de 1,12 t mensal de resíduos com a participação de 30% da população do município. No entanto, as estimativas aqui realizadas indicam a geração diária de 6,0 t de resíduos sólidos urbanos com 20% (1,18 t diário passíveis de reaproveitamento e reciclagem. Desse modo, se justifica a ampliação da coleta seletiva no município e as necessidades básicas para a realização dessa implantação são aqui descritas. = This paper presents the results for the proposed to expand the program of selective collection in the São Jorge Ivaí, Paraná, Brazil. The methodology involved questionnaires, visits to the shed screening, characterization of wastes and gravimetric preparation of zoning map of the collection. The current selective collection was implemented by the municipal government through a pilot project in the central city. It is estimated to collect 1.12 tons per month of waste with theparticipation of 30% of the population of the municipality. However, the estimates made here indicate the daily generation of 6.0 tons of waste with 20% (1.18 t/day capable of reusing and recycling. Thus, there is justification for expanding the collection at the county and the basic needs for the completion of this deployment are described here.

  6. Surgically assisted rapid maxillary expansion in adults.

    Science.gov (United States)

    Pogrel, M A; Kaban, L B; Vargervik, K; Baumrind, S

    1992-01-01

    Twelve adults with maxillary width discrepancy of greater than 5 mm were treated by surgically assisted rapid maxillary expansion. The procedure consisted of bilateral zygomatic buttress and midpalatal osteotomies combined with the use of a tooth-borne orthopedic device postoperatively. Mean palatal expansion of 7.5 mm (range of 6 to 13 mm), measured in the first molar region, was achieved within 3 weeks in all patients. Expansion remained stable during the 12-month study period, with a mean relapse for the entire group of 0.88 +/- 0.48 mm. Morbidity was limited to mild postoperative discomfort. The results of this preliminary study indicated that surgically assisted rapid maxillary expansion is a safe, simple, and reliable procedure for achieving a permanent increase in skeletal maxillary width in adults. Further study is necessary to document the three-dimensional movements of the maxillary segments and long-term stability of the skeletal and dental changes.

  7. High Falls generation station expansion approvals process

    Energy Technology Data Exchange (ETDEWEB)

    Litschko, C. [Lakeland Holding, Bracebridge, ON (Canada)

    2005-07-01

    Lakeland Holding Ltd. is the parent company for Lakeland Power Distribution Ltd., Bracebridge Generation Ltd., and Lakeland Energy Ltd. This PowerPoint presentation highlighted the High Falls generation expansion process. During construction of the High Falls plant, a concrete foundation was built beside the plant for future expansion. The expansion process involves building a 1,500 kilowatt generator to supply electricity to as many as 1600 households. The presentation described the context and background for the expansion and presented information on the water power generation plants. It presented site specifications as well as the approvals process by which final approval was granted in 2004. Observations and lessons learned from the approval process were identified. figs.

  8. Collisional and collisionless expansion of Yukawa balls.

    Science.gov (United States)

    Piel, Alexander; Goree, John A

    2013-12-01

    The expansion of Yukawa balls is studied by means of molecular dynamics simulations of collisionless and collisional situations. High computation speed was achieved by using the parallel computing power of graphics processing units. When the radius of the Yukawa ball is large compared to the shielding length, the expansion process starts with the blow-off of the outermost layer. A rarefactive wave subsequently propagates radially inward at the speed of longitudinal phonons. This mechanism is fundamentally different from Coulomb explosions, which employ a self-similar expansion of the entire system. In the collisionless limit, the outer layers carry away most of the available energy. The simulations are compared with analytical estimates. In the collisional case, the expansion process can be described by a nonlinear diffusion equation that is a special case of the porous medium equation.

  9. On Learning Ring-Sum-Expansions

    DEFF Research Database (Denmark)

    Fischer, Paul; Simon, H. -U.

    1992-01-01

    The problem of learning ring-sum-expansions from examples is studied. Ring-sum-expansions (RSE) are representations of Boolean functions over the base {#123;small infinum, (+), 1}#125;, which reflect arithmetic operations in GF(2). k-RSE is the class of ring-sum-expansions containing only monomials...... of a 2-CNF and a 1-DNF. Finally the paper presents learning (on-line prediction) algorithms for k-RSE that are optimal with respect to the sample size (worst case mistake bound)...... of length at most k:. term-RSE is the class of ring-sum-expansions having at most I: monomials. It is shown that k-RSE, k>or=1, is learnable while k-term-RSE, k>2, is not learnable if RPnot=NP. Without using a complexity-theoretical hypothesis, it is proven that k-RSE, k>or=1, and k-term-RSE, k>or=2 cannot...

  10. Cometary water expansion velocity from OH line shapes

    CERN Document Server

    Tseng, W L; Crovisier, J; Colom, P; Ip, W H

    2007-01-01

    We retrieve the H_2O expansion velocity in a number of comets, using the 18-cm line shapes of the OH radical observed with the Nan\\c{c}ay radio telescope. The H_2O velocity is derived from the large base of a trapezium fitted to the observed spectra. This method, which was previously applied to 9 comets, is now extended to 30 further comets. This allows us to study the evolution of their water molecule outflow velocity over a large range of heliocentric distances and gas production rates. Our analysis confirms and extends previous analyses. The retrieved expansion velocities increases with increasing gas production rates and decreasing heliocentric distances. Heuristic laws are proposed, which could be used for the interpretation of observations of cometary molecules and as a touchstone for hydrodynamical models. The expansion velocities retrieved from 18 cm line shapes are larger than those obtained from millimetric observations of parent molecules with smaller fields of view, which demonstrates the accelera...

  11. Feature Based Stereo Matching Using Two-Step Expansion

    Directory of Open Access Journals (Sweden)

    Liqiang Wang

    2014-01-01

    Full Text Available This paper proposes a novel method for stereo matching which is based on image features to produce a dense disparity map through two different expansion phases. It can find denser point correspondences than those of the existing seed-growing algorithms, and it has a good performance in short and wide baseline situations. This method supposes that all pixel coordinates in each image segment corresponding to a 3D surface separately satisfy projective geometry of 1D in horizontal axis. Firstly, a state-of-the-art method of feature matching is used to obtain sparse support points and an image segmentation-based prior is employed to assist the first region outspread. Secondly, the first-step expansion is to find more feature correspondences in the uniform region via initial support points, which is based on the invariant cross ratio in 1D projective transformation. In order to find enough point correspondences, we use a regular seed-growing algorithm as the second-step expansion and produce a quasi-dense disparity map. Finally, two different methods are used to obtain dense disparity map from quasi-dense pixel correspondences. Experimental results show the effectiveness of our method.

  12. Coefficient of thermal expansion of stressed thin films

    Institute of Scientific and Technical Information of China (English)

    WANG Zheng-dao; JIANG Shao-qing

    2006-01-01

    A new technique was proposed to determine the coefficient of thermal expansion (CTE) of thin films at low temperature. Different pre-stress could be applied and the elastic modulus of materials at different temperatures was measured with CTE simultaneously to eliminate the influence of mechanical deformation caused by the pre-stress. By using this technique,the CTEs of polyimide/silica nanocomposite films with different silica doping levels were experimentally studied at temperature from 77 K to 287 K,and some characteristics related to this new technique were discussed.

  13. Efficient Reversible Watermarking Using Differential Expansible Integer Wavelet Transform

    Directory of Open Access Journals (Sweden)

    Sanjay Patel

    2016-07-01

    Full Text Available Digital watermarking has been utilized widely to claim the ownership and to protect images from alternation. Reversible watermarking is having great importance as it provided original image and the embedded logo without any loss. This paper proposed reversible watermarking algorithm using integer wavelet transform to satisfy the reversibility requirement. Further difference expansion based lifting scheme is used to make algorithm fast. To show the robustness of algorithm, various attacks like noise, rotating/scaling an image and filtering to the watermarked image is employed. The extraction of original image against such attacks is quantified in terms of peak signal to noise ratio (PSNR

  14. Lattice QCD for Baryon Rich Matter - Beyond Taylor Expansions

    Science.gov (United States)

    Bornyakov, V.; Boyda, D.; Goy, V.; Molochkov, A.; Nakamura, A.; Nikolaev, A.; Zakharov, V. I.

    2016-12-01

    We discuss our study for exploring the QCD phase diagram based on the lattice QCD. To go beyond the Taylor expansion and to reach higher density regions, we employ the canonical approach. In order to produce lattice data which meet experimental situation as much as possible, we propose a canonical approach with the charge and baryon number. We present our lattice QCD GPU code for this project which employs the clover improved Wilson fermions and Iwasaki gauge action to investigate pure imaginary chemical potential.

  15. Lattice QCD for Baryon Rich Matter – Beyond Taylor Expansions

    Energy Technology Data Exchange (ETDEWEB)

    Bornyakov, V. [ITEP, B. Cheremushkinskaya 25, Moscow, 117218 (Russian Federation); School of Biomedicine, Far Eastern Federal University, Sukhanova 8, Vladivostok 690950 (Russian Federation); Boyda, D. [School of Biomedicine, Far Eastern Federal University, Sukhanova 8, Vladivostok 690950 (Russian Federation); Goy, V. [School of Natural Sciences, Far Eastern Federal University, Sukhanova 8, Vladivostok 690950 (Russian Federation); Molochkov, A. [School of Biomedicine, Far Eastern Federal University, Sukhanova 8, Vladivostok 690950 (Russian Federation); Nakamura, A. [School of Biomedicine, Far Eastern Federal University, Sukhanova 8, Vladivostok 690950 (Russian Federation); Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, Osaka, 567-0047 (Japan); Theoretical Research Division, Nishina Center, RIKEN, Wako 351-0198 (Japan); Nikolaev, A. [School of Biomedicine, Far Eastern Federal University, Sukhanova 8, Vladivostok 690950 (Russian Federation); Zakharov, V.I. [ITEP, B. Cheremushkinskaya 25, Moscow, 117218 (Russian Federation); School of Biomedicine, Far Eastern Federal University, Sukhanova 8, Vladivostok 690950 (Russian Federation); Moscow Inst Phys & Technol, Dolgoprudny, Moscow Region, 141700 (Russian Federation)

    2016-12-15

    We discuss our study for exploring the QCD phase diagram based on the lattice QCD. To go beyond the Taylor expansion and to reach higher density regions, we employ the canonical approach. In order to produce lattice data which meet experimental situation as much as possible, we propose a canonical approach with the charge and baryon number. We present our lattice QCD GPU code for this project which employs the clover improved Wilson fermions and Iwasaki gauge action to investigate pure imaginary chemical potential.

  16. Considering DG in Expansion Planning of Subtransmission System

    Directory of Open Access Journals (Sweden)

    H. Shayeghi

    2011-01-01

    Full Text Available Deregulation has been obtained new options in the design and planning of the power system. One of these options is the integration of Distributed Generation (DG into the power system. In this paper, the presence of distributed generation is regarded as another alternative for supplying the load of subtransmission system. The effects of DG on expansion planning of subtransmission system have been modeled as an  optimization problem where the Genetic Algorithm (GA and Linear Programming (LP are employed to solve it. The proposed approach is applied to a realistic subtransmission system and the results are evaluated.

  17. A Secure Hash Function MD-192 With Modified Message Expansion

    CERN Document Server

    Tiwari, Harshvardhan

    2010-01-01

    Cryptographic hash functions play a central role in cryptography. Hash functions were introduced in cryptology to provide message integrity and authentication. MD5, SHA1 and RIPEMD are among the most commonly used message digest algorithm. Recently proposed attacks on well known and widely used hash functions motivate a design of new stronger hash function. In this paper a new approach is presented that produces 192 bit message digest and uses a modified message expansion mechanism which generates more bit difference in each working variable to make the algorithm more secure. This hash function is collision resistant and assures a good compression and preimage resistance.

  18. Deformation analysis considering thermal expansion of injection mold

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Jun Hyung; Yi, Dae Eun; Jang, Jeong Hui; Lee, Min Seok [Samsung Electronics Co., LTD., Seoul (Korea, Republic of)

    2015-09-15

    In the design of injection molds, the temperature distribution and deformation of the mold is one of the most important parameters that affect the flow characteristics, flash generation, and surface appearance, etc. Plastic injection analyses have been carried out to predict the temperature distribution of the mold and the pressure distribution on the cavity surface. As the input loads, we transfer the temperature and pressure results to the structural analysis. We compare the structural analysis results with the thermal expansion effect using the actual flash and step size of a smartphone cover part. To reduce the flash problem, we proposed a new mold design, and verified the results by performing simulations.

  19. Fuel Thermal Expansion (FTHEXP). [BWR; PWR

    Energy Technology Data Exchange (ETDEWEB)

    Reymann, G. A.

    1978-07-01

    A model is presented which deals with dimensional changes in LWR fuel pellets caused by changes in temperature. It is capable of dealing with any combination of UO/sub 2/ and PuO/sub 2/ in solid, liquid or mixed phase states, and includes expansion due to the solid-liquid phase change. The function FTHEXP models fuel thermal expansion as a function of temperature, fraction of PuO/sub 2/, and the fraction of fuel which is molten.

  20. Thermal expansion coefficient of binary semiconductors

    Energy Technology Data Exchange (ETDEWEB)

    Kumar, V.; Sastry, B.S.R. [Indian School of Mines, Dhanbad (India). Dept. of Electronics and Instrumentation

    2001-07-01

    The linear thermal expansion coefficient of tetrahedrally coordinated A{sup II}B{sup VI} and A{sup III}B{sup V} semiconductors has been calculated using plasmon energy data. A simple relation between the bond length and plasmon energy has been derived. The calculated values of thermal expansion coefficient and bond length have been compared with the experimental values and the values reported by different workers. An excellent experiment has been obtained between them. (orig.)

  1. Cluster expansion in the canonical ensemble

    CERN Document Server

    Pulvirenti, Elena

    2011-01-01

    We consider a system of particles confined in a box $\\La\\subset\\R^d$ interacting via a tempered and stable pair potential. We prove the validity of the cluster expansion for the canonical partition function in the high temperature - low density regime. The convergence is uniform in the volume and in the thermodynamic limit it reproduces Mayer's virial expansion providing an alternative and more direct derivation which avoids the deep combinatorial issues present in the original proof.

  2. Index calculation by means of harmonic expansion

    CERN Document Server

    Imamura, Yosuke

    2015-01-01

    We review derivation of superconformal indices by means of supersymmetric localization and spherical harmonic expansion for 3d N=2, 4d N=1, and 6d N=(1,0) supersymmetric gauge theories. We demonstrate calculation of indices for vector multiplets in each dimensions by analysing energy eigenmodes in S^pxR. For the 6d index we consider the perturbative contribution only. We put focus on technical details of harmonic expansion rather than physical applications.

  3. Optimized $\\delta$ expansion for relativistic nuclear models

    CERN Document Server

    Krein, G I; Peres-Menezes, D; Nielsen, M; Pinto, M B

    1998-01-01

    The optimized $\\delta$-expansion is a nonperturbative approach for field theoretic models which combines the techniques of perturbation theory and the variational principle. This technique is discussed in the $\\lambda \\phi^4$ model and then implemented in the Walecka model for the equation of state of nuclear matter. The results obtained with the $\\delta$ expansion are compared with those obtained with the traditional mean field, relativistic Hartree and Hartree-Fock approximations.

  4. Expansion of Bubbles in Inflationary Universe

    OpenAIRE

    Mohazzab, M.; Jabbari, M. M. Sheikh; Salehi, H.

    1995-01-01

    We show that particle production during the expansion of bubbles of true vacuum in the sea of false vacuum is possible and calculate the resulting rate. As a result the nucleated bubbles cannot expand due to the transfer of false vacuum energy to the created particles inside the bubbles. Therefore all the inflationary models dealing with the nucleation and expansion of the bubbles (including extended inflation) may not be viable.

  5. Expansion of bubbles in inflationary universe

    CERN Document Server

    Mohazzab, M

    1995-01-01

    We show that particle production during the expansion of bubbles of true vacuum in the sea of false vacuum is possible and calculate the resulting rate. As a result the nucleated bubbles cannot expand due to the transfer of false vacuum energy to the created particles inside the bubbles. Therefore all the inflationary models dealing with the nucleation and expansion of the bubbles (including extended inflation) may not be viable.

  6. Thermal Expansion Coefficients of Thin Crystal Films

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    The formulas for atomic displacements and Hamiltonian of a thin crystal film in phonon occupation number representation are obtained with the aid of Green's function theory. On the basis of these results, the formulas for thermal expansion coefficients of the thin crystal film are derived with the perturbation theory, and the numerical calculations are carried out. The results show that the thinner films have larger thermal expansion coefficients.

  7. CO{sub 2} expansion work recovery by impulse turbine

    Energy Technology Data Exchange (ETDEWEB)

    Toendell, Espen

    2006-07-01

    This study focuses on refrigeration processes with relatively low cooling capacities and hereby low circulation rates. The presented theory for turbines focuses on work extraction in impulse turbines. For an impulse turbine, the optimal rotational speed gives a turbine blade tip speed equal to half the nozzle jet velocity. With small volume flow rates, the turbine will have small dimensions, and hereby the rotational speed will be high. Together with principles for work extraction, the losses in the turbine were discussed. The main losses are nozzle losses (Friction and incomplete flashing), rotational losses, disc friction, windage, changing angles, non-rotational losses, fluid friction between jet and turbine blade, jet not hitting turbine blade, mechanical losses in bearings. A literature survey was made to show some examples on two-phase turbines and to create a theoretical basis for fluid expansion in a nozzle. The literature survey on two-phase expanders showed some examples on Helium expanders with small dimensions and good efficiencies. Compared to a helium expander, a CO{sub 2} expander will be working on a higher pressure, and hereby some extra losses must be expected. Some work on expander for R134a was also referred. That work was however focused on high cooling capacities, which means that the R134a expander will have much higher mass flow than the CO{sub 2} expander in this study. The literature survey on fluid expansion and nucleation showed that the critical radius is important in nucleation. The critical radius is dependent on the surface tension and the difference between the liquid saturation pressure and the local pressure. For the current study, understanding of nucleation will be important in order to understand the function of the nozzle. Finally some models for critical flow were presented (author) (ml)

  8. Fixed Point Theorems for Times Reasonable Expansive Mapping

    Directory of Open Access Journals (Sweden)

    Chen Chunfang

    2008-01-01

    Full Text Available Abstract Based on previous notions of expansive mapping, times reasonable expansive mapping is defined. The existence of fixed point for times reasonable expansive mapping is discussed and some new results are obtained.

  9. Thermal expansion of doped lanthanum gallates

    Indian Academy of Sciences (India)

    K T Jacob; S Jain; V S Saji; P V K Srikanth

    2010-08-01

    Thermal expansion of several compositions of Sr and Mg-doped LaGaO3 including an -site deficient composition (La0.9Sr0.1)0.98(Ga0.8Mg0.2)O2.821 were measured in the temperature range from 298 to 1273 K. The effect of doping on thermal expansion was studied by varying the composition at one site of the perovskite structure (either or ), while keeping the composition at the other site invariant. Thermal expansion varied nonlinearly with temperature and exhibited an inflexion between 550 and 620 K, probably related to the change in crystal structure from orthorhombic to rhombohedral. The dependence of average thermal expansion coefficient (av) on the dopant concentration on either or site of the perovskite structure was found to be linear, when the composition at the other site was kept constant. Mg doping on the -site had a greater effect on the average thermal expansion coefficient than Sr doping on the -site. Cation deficiency at the -site decreases thermal expansion when compositions at both sites are held constant.

  10. Expansion analyses of strategic petroleum reserve in Bayou Choctaw : revised locations.

    Energy Technology Data Exchange (ETDEWEB)

    Ehgartner, Brian L.; Park, Byoung Yoon

    2010-11-01

    This report summarizes a series of three-dimensional simulations for the Bayou Choctaw Strategic Petroleum Reserve. The U.S. Department of Energy plans to leach two new caverns and convert one of the existing caverns within the Bayou Choctaw salt dome to expand its petroleum reserve storage capacity. An existing finite element mesh from previous analyses is modified by changing the locations of two caverns. The structural integrity of the three expansion caverns and the interaction between all the caverns in the dome are investigated. The impacts of the expansion on underground creep closure, surface subsidence, infrastructure, and well integrity are quantified. Two scenarios were used for the duration and timing of workover conditions where wellhead pressures are temporarily reduced to atmospheric pressure. The three expansion caverns are predicted to be structurally stable against tensile failure for both scenarios. Dilatant failure is not expected within the vicinity of the expansion caverns. Damage to surface structures is not predicted and there is not a marked increase in surface strains due to the presence of the three expansion caverns. The wells into the caverns should not undergo yield. The results show that from a structural viewpoint, the locations of the two newly proposed expansion caverns are acceptable, and all three expansion caverns can be safely constructed and operated.

  11. The Wave-Like Auroral Structure around Auroral Expansion Onset

    Institute of Scientific and Technical Information of China (English)

    TANG Chao-Ling

    2011-01-01

    THEMIS probes in the near-Earth magnetotail.The observed wavelength of the ballooning mode waves is approximately equal to the order of the ion Larmor radius.The wavelength of 1500 3000 km in the near-Earth magnetotail is comparable with the wave-like auroral structure estimate.This study suggests that the ballooning mode waves might play a crucial role in auroral expansion onset,corresponding to the wave-like auroral structure in this study.Recent theoretical models predict that ballooning instability is a possible trigger of the substorm expansion phase.[1] The idea that ballooning instability in the near-Earth tail is a substorm trigger was first proposed by Roux et al.[2] Since then,many theoretical and observational studies have been conducted to see whether or not ballooning instability plays a crucial role in the near-Earth tail during the late growth phase of substorms.[3

  12. WEAVE-QSO: A Massive Intergalactic Medium Survey for the William Herschel Telescope

    Science.gov (United States)

    Pieri, M. M.; Bonoli, S.; Chaves-Montero, J.; Pâris, I.; Fumagalli, M.; Bolton, J. S.; Viel, M.; Noterdaeme, P.; Miralda-Escudé, J.; Busca, N. G.; Rahmani, H.; Peroux, C.; Font-Ribera, A.; Trager, S. C.

    2016-12-01

    In these proceedings we describe the WEAVE-QSO survey, which will observe around 400,000 high redshift quasars starting in 2018. This survey is part of a broader WEAVE survey to be conducted at the 4.2m William Herschel Telescope. We will focus on chiefly on the science goals, but will also briefly summarise the target selection methods anticipated and the expected survey plan. Understanding the apparent acceleration in the expansion of the Universe is one of the key scientific challenges of our time. Many experiments have been proposed to study this expansion, using a variety of techniques. Here we describe a survey that can measure this acceleration and therefore help elucidate the nature of dark energy: a survey of the Lyα forest (and quasar absorption in general) in spectra towards z>2 quasars (QSOs). Further constraints on neutrino masses and warm dark matter are also anticipated. The same data will also shed light on galaxy formation via study of the properties of inflowing/outflowing gas associated with nearby galaxies and in a cosmic web context. Gas properties are sensitive to density, temperature, UV radiation, metallicity and abundance pattern, and so constraint galaxy formation in a variety of ways. WEAVE-QSO will study absorbers with a dynamic range spanning more than 8 orders of magnitude in column density, their thermal broadening, and a host of elements and ionization species. A core principal of the WEAVE-QSO survey is the targeting of QSOs with near 100% efficiency principally through use of the J-PAS (r < 23.2) and Gaia (r ≲ 20) data.

  13. Nonrelativistic QED expansion for the electron self-energy

    Science.gov (United States)

    Patkóš, V.; Šimsa, D.; Zamastil, J.

    2017-01-01

    The recently proposed relativistic multipole expansion (RME) of the self-energy effect suggests some observations on the nonrelativistic expansion of the effect. First, the nature of the series for the one-loop self-energy of an electron bound by the Coulomb field of the nucleus is clarified. It is shown that the expansion of the energy shift caused by the self-energy effect contains terms of the form α (Zα ) 7ln(Z α ) , α (Zα ) 8ln3(Z α ) , α (Zα ) 9ln2(Z α ) , α (Zα ) 10ln4(Z α ) , and so on. Here Z is the charge of the nucleus. The origin of these terms is traced back to the logarithmic divergence of the Dirac S -wave function at the origin. These terms eventually lead to breakdown of the nonrelativistic quantum electrodynamics approach. Second, at leading order relativistic multipole expansion requires an evaluation of the "extended Bethe logarithm" (EBL). When expanded in series in Z α EBL reduces at leading order to the ordinary Bethe logarithm. However, it is argued that it is both more accurate and easier to calculate the EBL than the ordinary Bethe logarithm. Both variants of the Bethe logarithm can be calculated by means of the pseudostate method. An improvement of this method is suggested. Finally, the contribution of the combined self-energy vacuum polarization contribution to the Lamb shift in muonic hydrogen for the 1 s -4 s and 2 p -4 p states by means of the EBL is calculated. For cases that had already been calculated the results reported here are more accurate than the previous ones.

  14. Controllable rectification of the axial expansion in the thermally driven artificial muscle

    Science.gov (United States)

    Yue, Donghua; Zhang, Xingyi; Yong, Huadong; Zhou, Jun; Zhou, You-He

    2015-09-01

    At present, the concept of artificial muscle twisted by polymers or fibers has become a hot issue in the field of intelligent material research according to its distinguishing advantages, e.g., high energy density, large-stroke, non-hysteresis, and inexpensive. The axial thermal expansion coefficient is an important parameter which can affect its demanding applications. In this letter, a device with high accuracy capacitive sensor is constructed to measure the axial thermal expansion coefficient of the twisted carbon fibers and yarns of Kevlar, and a theoretical model based on the thermal elasticity and the geometrical features of the twisted structure are also presented to predict the axial expansion coefficient. It is found that the calculated results take good agreements with the experimental data. According to the present experiment and analyses, a method to control the axial thermal expansion coefficient of artificial muscle is proposed. Moreover, the mechanism of this kind of thermally driven artificial muscle is discussed.

  15. Osseous Dysplasia with Gross Jaw Expansion: A Review of 18 Lesions.

    Science.gov (United States)

    Raubenheimer, Erich J; Noffke, Claudia E; Boy, Sonja C

    2016-12-01

    Fourteen cases with 18 grossly expansive lesions diagnosed over a period of 15 years as either "familial gigantiform cementoma" or "osseous dysplasia with jaw expansion" in an African population sample were reviewed. Eight lesions occurred in the anterior mandible, the maxilla was affected by four, three patients presented with more than one lesion and the most common associated pathologies were tooth displacement, conventional non expanding florid osseous dysplasia and simple bone cyst. No history of similar lesions in relatives of the diseased were recorded. The radiolucent fibrous component contained globular bone deposits and cellular osteoid with trabecular differentiation which matured into radiodense mineralized masses. Resorption of the cellular bone created cavities which are proposed to represent the early stage of simple bone cyst formation. It is recommended that "expansive osseous dysplasia" replace the out-dated term "familial gigantiform cementoma". The differential diagnoses of expansive osseous dysplasias are discussed.

  16. Negative thermal expansion materials: technological key for control of thermal expansion.

    Science.gov (United States)

    Takenaka, Koshi

    2012-02-01

    Most materials expand upon heating. However, although rare, some materials contract upon heating. Such negative thermal expansion (NTE) materials have enormous industrial merit because they can control the thermal expansion of materials. Recent progress in materials research enables us to obtain materials exhibiting negative coefficients of linear thermal expansion over -30 ppm K(-1). Such giant NTE is opening a new phase of control of thermal expansion in composites. Specifically examining practical aspects, this review briefly summarizes materials and mechanisms of NTE as well as composites containing NTE materials, based mainly on activities of the last decade.

  17. Economic expansion and increase in labout market formality: a poaching approach

    Directory of Open Access Journals (Sweden)

    Carlos Henrique L. Corseuil

    2012-06-01

    Full Text Available This paper investigates the relationship between economic expansion and the degree of formalization for the Brazilian labour market in the recent period. We present a theoretical framework that attempts to explain this relationship through the dynamics of firms hiring strategies. The main predictions are: the share of formal employment rises as the unemployment rate falls, and that the formal-informal wage gap increases, at least at the beginning of the economic expansion. In the empirical part, we use longitudinal microdata from a Brazilian household survey to check whether these two predictions are confirmed. To a large extent our results corroborate both predictions.

  18. Preliminary thermal expansion screening data for tuffs

    Energy Technology Data Exchange (ETDEWEB)

    Lappin, A.R.

    1980-03-01

    A major variable in evaluating the potential of silicic tuffs for use in geologic disposal of heat-producing nuclear wastes is thermal expansion. Results of ambient-pressure linear expansion measurements on a group of tuffs that vary treatly in porosity and mineralogy are presente here. Thermal expansion of devitrified welded tuffs is generally linear with increasing temperature and independent of both porosity and heating rate. Mineralogic factors affecting behavior of these tuffs are limited to the presence or absence of cristobalite and altered biotite. The presence of cristobalite results in markedly nonlinear expansion above 200{sup 0}C. If biotite in biotite-hearing rocks alters even slightly to expandable clays, the behavior of these tuffs near the boiling point of water can be dominated by contraction of the expandable phase. Expansion of both high- and low-porosity tuffs containing hydrated silicic glass and/or expandable clays is complex. The behavior of these rocks appears to be completely dominated by dehydration of hydrous phases and, hence, should be critically dependent on fluid pressure. Valid extrapolation of the ambient-pressure results presented here to depths of interest for construction of a nuclear-waste repository will depend on a good understanding of the interaction of dehydration rates and fluid pressures, and of the effects of both micro- and macrofractures on the response of tuff masss.

  19. The $\\hbar$ Expansion in Quantum Field Theory

    Energy Technology Data Exchange (ETDEWEB)

    Brodsky, Stanley J.; /SLAC /Southern Denmark U., CP3-Origins; Hoyer, Paul; /Southern Denmark U., CP3-Origins /Helsinki U. /Helsinki Inst. of Phys.

    2010-10-27

    We show how expansions in powers of Planck's constant {h_bar} = h = 2{pi} can give new insights into perturbative and nonperturbative properties of quantum field theories. Since {h_bar} is a fundamental parameter, exact Lorentz invariance and gauge invariance are maintained at each order of the expansion. The physics of the {h_bar} expansion depends on the scheme; i.e., different expansions are obtained depending on which quantities (momenta, couplings and masses) are assumed to be independent of {h_bar}. We show that if the coupling and mass parameters appearing in the Lagrangian density are taken to be independent of {h_bar}, then each loop in perturbation theory brings a factor of {h_bar}. In the case of quantum electrodynamics, this scheme implies that the classical charge e, as well as the fine structure constant are linear in {h_bar}. The connection between the number of loops and factors of {h_bar} is more subtle for bound states since the binding energies and bound-state momenta themselves scale with {h_bar}. The {h_bar} expansion allows one to identify equal-time relativistic bound states in QED and QCD which are of lowest order in {h_bar} and transform dynamically under Lorentz boosts. The possibility to use retarded propagators at the Born level gives valence-like wave-functions which implicitly describe the sea constituents of the bound states normally present in its Fock state representation.

  20. Expansion Under Climate Change: The Genetic Consequences.

    Science.gov (United States)

    Garnier, Jimmy; Lewis, Mark A

    2016-11-01

    Range expansion and range shifts are crucial population responses to climate change. Genetic consequences are not well understood but are clearly coupled to ecological dynamics that, in turn, are driven by shifting climate conditions. We model a population with a deterministic reaction-diffusion model coupled to a heterogeneous environment that develops in time due to climate change. We decompose the resulting travelling wave solution into neutral genetic components to analyse the spatio-temporal dynamics of its genetic structure. Our analysis shows that range expansions and range shifts under slow climate change preserve genetic diversity. This is because slow climate change creates range boundaries that promote spatial mixing of genetic components. Mathematically, the mixing leads to so-called pushed travelling wave solutions. This mixing phenomenon is not seen in spatially homogeneous environments, where range expansion reduces genetic diversity through gene surfing arising from pulled travelling wave solutions. However, the preservation of diversity is diminished when climate change occurs too quickly. Using diversity indices, we show that fast expansions and range shifts erode genetic diversity more than slow range expansions and range shifts. Our study provides analytical insight into the dynamics of travelling wave solutions in heterogeneous environments.