Science.gov

Sample records for acquisition streamlining act

  1. 48 CFR 13.005 - Federal Acquisition Streamlining Act of 1994 list of inapplicable laws.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 1 2011-10-01 2011-10-01 false Federal Acquisition Streamlining Act of 1994 list of inapplicable laws. 13.005 Section 13.005 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION CONTRACTING METHODS AND CONTRACT TYPES SIMPLIFIED ACQUISITION PROCEDURES 13.005 Federal Acquisition...

  2. Streamlined acquisition handbook

    NASA Technical Reports Server (NTRS)

    1990-01-01

    NASA has always placed great emphasis on the acquisition process, recognizing it as among its most important activities. This handbook is intended to facilitate the application of streamlined acquisition procedures. The development of these procedures reflects the efforts of an action group composed of NASA Headquarters and center acquisition professionals. It is the intent to accomplish the real change in the acquisition process as a result of this effort. An important part of streamlining the acquisition process is a commitment by the people involved in the process to accomplishing acquisition activities quickly and with high quality. Too often we continue to accomplish work in 'the same old way' without considering available alternatives which would require no changes to regulations, approvals from Headquarters, or waivers of required practice. Similarly, we must be sensitive to schedule opportunities throughout the acquisition cycle, not just once the purchase request arrives at the procurement office. Techniques that have been identified as ways of reducing acquisition lead time while maintaining high quality in our acquisition process are presented.

  3. Acquisition streamlining: A cultural change

    NASA Technical Reports Server (NTRS)

    Stewart, Jesse

    1992-01-01

    The topics are presented in viewgraph form and include the following: the defense systems management college, educational philosophy, the defense acquisition environment, streamlining initiatives, organizational streamlining types, defense law review, law review purpose, law review objectives, the Public Law Pilot Program, and cultural change.

  4. Acquisition streamlining: A cultural change

    NASA Astrophysics Data System (ADS)

    Stewart, Jesse

    The topics are presented in viewgraph form and include the following: the defense systems management college, educational philosophy, the defense acquisition environment, streamlining initiatives, organizational streamlining types, defense law review, law review purpose, law review objectives, the Public Law Pilot Program, and cultural change.

  5. 48 CFR 13.005 - Federal Acquisition Streamlining Act of 1994 list of inapplicable laws.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... below the simplified acquisition threshold: (1) 41 U.S.C. 57 (a) and (b) (Anti-Kickback Act of 1986... inapplicable.). (2) 40 U.S.C. 3131 (Miller Act). (Although the Miller Act does not apply to contracts at or... labor and material (see 28.102) are still required if the contract exceeds $30,000 (40 U.S.C 3132).)....

  6. 48 CFR 13.005 - Federal Acquisition Streamlining Act of 1994 list of inapplicable laws.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ....S.C. 701(a)(1) (Section 5152 of the Drug-Free Workplace Act of 1988), except for individuals. (5) 42...) Specifically state that notwithstanding the language of Section 4101, Public Law 103-355, the enactment will...

  7. 48 CFR 252.211-7000 - Acquisition streamlining.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 3 2011-10-01 2011-10-01 false Acquisition streamlining. 252.211-7000 Section 252.211-7000 Federal Acquisition Regulations System DEFENSE ACQUISITION... of Provisions And Clauses 252.211-7000 Acquisition streamlining. As prescribed in 211.002-70, use...

  8. 48 CFR 252.211-7000 - Acquisition streamlining.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Acquisition streamlining. 252.211-7000 Section 252.211-7000 Federal Acquisition Regulations System DEFENSE ACQUISITION... of Provisions And Clauses 252.211-7000 Acquisition streamlining. As prescribed in 211.002-70, use...

  9. 48 CFR 1480.102 - Buy Indian Act acquisition regulations.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 5 2014-10-01 2014-10-01 false Buy Indian Act acquisition... INDIAN AFFAIRS SUPPLEMENT ACQUISITIONS UNDER THE BUY INDIAN ACT General 1480.102 Buy Indian Act... the Buy Indian Act. (b) This part is under the direct oversight and control of the Chief...

  10. 48 CFR 1480.102 - Buy Indian Act acquisition regulations.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 5 2013-10-01 2013-10-01 false Buy Indian Act acquisition... INDIAN AFFAIRS SUPPLEMENT ACQUISITIONS UNDER THE BUY INDIAN ACT Subpart 1480.1 General 1480.102 Buy... in implementing the Buy Indian Act. (b) This part is under the direct oversight and control of...

  11. 48 CFR 18.113 - Interagency acquisitions under the Economy Act.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false Interagency acquisitions under the Economy Act. 18.113 Section 18.113 Federal Acquisition Regulations System FEDERAL ACQUISITION... 18.113 Interagency acquisitions under the Economy Act. Interagency acquisitions are authorized...

  12. Inspectors General Streamlining Act

    THOMAS, 113th Congress

    Sen. Coburn, Tom [R-OK

    2014-11-13

    11/13/2014 Read twice and referred to the Committee on Homeland Security and Governmental Affairs. (All Actions) Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

  13. 48 CFR 52.207-2 - Notice of Streamlined Competition.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Competition. 52.207-2 Section 52.207-2 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION....207-2 Notice of Streamlined Competition. As prescribed in 7.305(b), insert the following provision: Notice of Streamlined Competition (MAY 2006) (a) This solicitation is part of a streamlined...

  14. 48 CFR 52.207-2 - Notice of Streamlined Competition.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Competition. 52.207-2 Section 52.207-2 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION....207-2 Notice of Streamlined Competition. As prescribed in 7.305(b), insert the following provision: Notice of Streamlined Competition (MAY 2006) (a) This solicitation is part of a streamlined...

  15. 48 CFR 52.207-2 - Notice of Streamlined Competition.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Competition. 52.207-2 Section 52.207-2 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION....207-2 Notice of Streamlined Competition. As prescribed in 7.305(b), insert the following provision: Notice of Streamlined Competition (MAY 2006) (a) This solicitation is part of a streamlined...

  16. 48 CFR 52.207-2 - Notice of Streamlined Competition.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Competition. 52.207-2 Section 52.207-2 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION....207-2 Notice of Streamlined Competition. As prescribed in 7.305(b), insert the following provision: Notice of Streamlined Competition (MAY 2006) (a) This solicitation is part of a streamlined...

  17. 48 CFR 52.207-2 - Notice of Streamlined Competition.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Competition. 52.207-2 Section 52.207-2 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION....207-2 Notice of Streamlined Competition. As prescribed in 7.305(b), insert the following provision: Notice of Streamlined Competition (MAY 2006) (a) This solicitation is part of a streamlined...

  18. Streamlined Island

    NASA Technical Reports Server (NTRS)

    2003-01-01

    MGS MOC Release No. MOC2-514, 15 October 2003

    This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) picture shows a streamlined island in Marte Vallis, a large outflow channel system that crosses the 180oW meridian between the Elysium and Amazonis regions of Mars. The flow patterns on the floor of Marte Vallis might be the remains of lava flows or mud flows. Marte is the Spanish word for Mars. Most of the largest valleys on the red planet are named for 'Mars' in various languages. This island is located near 21.8oN, 175.3oW. The picture covers an area 3 km (1.9 mi) wide and is illuminated by sunlight from the lower left.

  19. 48 CFR 12.602 - Streamlined evaluation of offers.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... when the solicitation adequately describes the item's intended use. A technical evaluation would... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false Streamlined evaluation of... ACQUISITION PLANNING ACQUISITION OF COMMERCIAL ITEMS Streamlined Procedures for Evaluation and...

  20. 48 CFR 212.602 - Streamlined evaluation of offers.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Streamlined evaluation of offers. 212.602 Section 212.602 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS... for Evaluation and Solicitation for Commercial Items 212.602 Streamlined evaluation of offers....

  1. Regulatory Streamlining and Improvement

    SciTech Connect

    Mark A. Carl

    2006-07-11

    The Interstate Oil and Gas Compact Commission (IOGCC) engaged in numerous projects outlined under the scope of work discussed in the United States Department of Energy (DOE) grant number DE-FC26-04NT15456 awarded to the IOGCC. Numerous projects were completed that were extremely valuable to state oil and gas agencies as a result of work performed utilizing resources provided by the grant. There are numerous areas in which state agencies still need assistance. This additional assistance will need to be addressed under future scopes of work submitted annually to DOE's Project Officer for this grant. This report discusses the progress of the projects outlined under the grant scope of work for the 2005-2006 areas of interest, which are as follows: Area of Interest No. 1--Regulatory Streamlining and Improvement: This area of interest continues to support IOGCC's regulatory streamlining efforts that include the identification and elimination of unnecessary duplications of efforts between and among state and federal programs dealing with exploration and production on public lands. Area of Interest No. 2--Technology: This area of interest seeks to improve efficiency in states through the identification of technologies that can reduce costs. Area of Interest No. 3--Training and Education: This area of interest is vital to upgrading the skills of regulators and industry alike. Within the National Energy Policy, there are many appropriate training and education opportunities. Education was strongly endorsed by the President's National Energy Policy Development group. Acting through the governors offices, states are very effective conduits for the dissemination of energy education information. While the IOGCC favors the development of a comprehensive, long-term energy education plan, states are also supportive of immediate action on important concerns, such as energy prices, availability and conservation. Area of Interest No. 4--Resource Assessment and Development: This area

  2. The Acquisition of Temporal Reference Cross-Linguistically Using Two Acting-Out Comprehension Tasks

    ERIC Educational Resources Information Center

    Winskel, Heather

    2004-01-01

    The acquisition of temporal event referencing, encoded by the temporal connectives: then, before, after, when, while, together, until, and since in English, Thai and Lisu was investigated using two acting-out comprehension tasks, a Marble task and a Toy task. Forty children aged 3.6-7.6 years from each language participated. The Marble and Toy…

  3. Streamlining Federal Education Programs.

    ERIC Educational Resources Information Center

    Mockler, John B.; Birdsall, Peter

    1983-01-01

    Proposes a way to streamline federal categorical program management while maintaining equity and equality. The proposal has three components: (1) incentives to state governments to adopt programs that meet federal objectives; (2) schoolwide coordination of programs; and (3) waivers from categorical program requirements under certain conditions.…

  4. Streamlining the EIS Process

    ERIC Educational Resources Information Center

    Josephson, Julian

    1977-01-01

    A new publication service abstracts, indexes, and prepares microfiche of environmental impact statements (EIS). This new service is designed to streamline the EIS process by reducing the cost and time of preparation, by eliminating redundancy of similar statements, and by working with the government to standardize the preparation process. (MA)

  5. 48 CFR 12.603 - Streamlined solicitation for commercial items.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... REGULATION ACQUISITION PLANNING ACQUISITION OF COMMERCIAL ITEMS Streamlined Procedures for Evaluation and... Program, if applicable. (v) A list of contract line item number(s) and items, quantities and units of....212-2, Evaluation—Commercial Items, if used, and the specific evaluation criteria to be included...

  6. Control software for two dimensional airfoil tests using a self-streamlining flexible walled transonic test section

    NASA Technical Reports Server (NTRS)

    Wolf, S. W. D.; Goodyer, M. J.

    1982-01-01

    Operation of the Transonic Self-Streamlining Wind Tunnel (TSWT) involved on-line data acquisition with automatic wall adjustment. A tunnel run consisted of streamlining the walls from known starting contours in iterative steps and acquiring model data. Each run performs what is described as a streamlining cycle. The associated software is presented.

  7. 75 FR 34271 - Federal Acquisition Regulation; FAR Case 2009-010, American Recovery and Reinvestment Act of 2009...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-16

    ... Federal Register at 74 FR 14636 on March 31, 2009, with a request for comments by June 1, 2009. The... the Federal Register at 74 FR 14636 on March 31, 2009, is adopted as a final rule with the following... Acquisition Regulation; FAR Case 2009-010, American Recovery and Reinvestment Act of 2009 (the Recovery...

  8. Streamline Your PD

    ERIC Educational Resources Information Center

    Neufeld, Janet K.

    2013-01-01

    One of the larger shifts in education is evaluating teacher knowledge acquisition to determine if it is effectively changing the way teachers learn, teach, and bring about student improvement. In the effort to do this, teachers often spend much time on administrative duties, such as documenting what classes or workshops they have taken, and this…

  9. 77 FR 43081 - Federal Acquisition Regulation; Information Collection; Buy American Act-Free Trade Agreements...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-23

    ... Regulation; Information Collection; Buy American Act--Free Trade Agreements--Israeli Trade Act Certificate... previously approved information collection requirement concerning the Buy American Act--Free Trade Agreements..., Buy American Act--Free Trade Agreements--Israeli Trade Act Certificate, by any of the...

  10. 76 FR 40367 - Federal Acquisition Regulation; Information Collection; Buy American Act-Construction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-08

    ... Regulation; Information Collection; Buy American Act--Construction AGENCY: Department of Defense (DOD... previously approved information collection requirement concerning the Buy American Act--Construction..., American Act--Construction (Grimberg Decision), by any of the following methods: ] Regulations.gov :...

  11. Streamline coal slurry letdown valve

    DOEpatents

    Platt, Robert J.; Shadbolt, Edward A.

    1983-01-01

    A streamlined coal slurry letdown valve is featured which has a two-piece throat comprised of a seat and seat retainer. The two-piece design allows for easy assembly and disassembly of the valve. A novel cage holds the two-piece throat together during the high pressure letdown. The coal slurry letdown valve has long operating life as a result of its streamlined and erosion-resistance surfaces.

  12. Streamline coal slurry letdown valve

    DOEpatents

    Platt, R.J.; Shadbolt, E.A.

    1983-11-08

    A streamlined coal slurry letdown valve is featured which has a two-piece throat comprised of a seat and seat retainer. The two-piece design allows for easy assembly and disassembly of the valve. A novel cage holds the two-piece throat together during the high pressure letdown. The coal slurry letdown valve has long operating life as a result of its streamlined and erosion-resistance surfaces. 5 figs.

  13. Speech Acts across Cultures: Challenges to Communication in a Second Language. Studies on Language Acquisition, 11.

    ERIC Educational Resources Information Center

    Gass, Susan M., Ed.; Neu, Joyce, Ed.

    Articles on speech acts and intercultural communication include: "Investigating the Production of Speech Act Sets" (Andrew Cohen); "Non-Native Refusals: A Methodological Perspective" (Noel Houck, Susan M. Gass); "Natural Speech Act Data versus Written Questionnaire Data: How Data Collection Method Affects Speech Act Performance" (Leslie M. Beebe,…

  14. Streamlining Payload Integration

    NASA Technical Reports Server (NTRS)

    Lufkin, Susan N.

    2010-01-01

    Payload integration onto space transport vehicles and the International Space Station (ISS) is a complex process. Yet, cargo transport is the sole reason for any space mission, be it for ferrying humans, science, or hardware. As the largest such effort in history, the ISS offers a wide variety of payload experience. However, for any payload to reach the Space Station under the current process, Payload Developers face a list of daunting tasks that go well beyond just designing the payload to the constraints of the transport vehicle and its stowage topology. Payload customers are required to prove their payload s functionality, structural integrity, and safe integration - including under less than nominal situations. They must also plan for or provide training, procedures, hardware labeling, ground support, and communications. In addition, they must deal with negotiating shared consumables, integrating software, obtaining video, and coordinating the return of data and hardware. All the while, they must meet export laws, launch schedules, budget limits, and the consensus of more than 12 panel and board reviews. Despite the cost and infrastructure overhead, payload proposals have increased. Just in the span from FY08 to FY09, the NASA Payload Space Station Support Office budget rose from $78M to $96M in attempt to manage the growing manifest, but the potential number of payloads still exceeds available Payload Integration Management manpower. The growth has also increased management difficulties due to the fact that payloads are more frequently added to a flight schedule late in the flow. The current standard ISS template for payload integration from concept to payload turn-over is 36 months, or 18 months if the payload already has a preliminary design. Customers are increasingly requiring a turn-around of 3 to 6-months to meet market needs. The following paper suggests options for streamlining the current payload integration process in order to meet customer schedule

  15. 76 FR 24027 - Federal Acquisition Regulation; Information Collection; Buy American Act Certificate

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-29

    ... Regulation; Information Collection; Buy American Act Certificate AGENCY: Department of Defense (DOD), General... previously approved information collection requirement concerning the Buy American Act certificate. Public... Comment'' screen. Please include your name, company name (if any), and ``Information Collection...

  16. 17 CFR 250.14 - Exemption of acquisitions of securities of power supply companies from section 9(a)(2) of the Act.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... securities of power supply companies from section 9(a)(2) of the Act. 250.14 Section 250.14 Commodity and... of securities of power supply companies from section 9(a)(2) of the Act. (a) An electric utility... exempt from section 9(a)(2) of the Act with respect to the acquisition of any security of a power...

  17. 77 FR 29982 - Federal Acquisition Regulation; Submission for OMB Review; Davis Bacon Act-Price Adjustment...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-21

    ... (actual method). A notice was published in the Federal Register at 77 FR 13328, on March 6, 2012. No... Regulation; Submission for OMB Review; Davis Bacon Act-Price Adjustment (Actual Method) AGENCY: Department of... Bacon Act-Price Adjustment (Actual Method), by any of the following methods: Regulations.gov :...

  18. 77 FR 13328 - Federal Acquisition Regulation; Information Collection; Davis Bacon Act-Price Adjustment (Actual...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-06

    ... Regulation; Information Collection; Davis Bacon Act--Price Adjustment (Actual Method) AGENCY: Department of... (actual method). Public comments are particularly invited on: Whether this collection of information is... comments identified by Information Collection 9000- 0154, Davis Bacon Act--Price Adjustment (Actual...

  19. Surface-Streamline Flow Visualization

    NASA Technical Reports Server (NTRS)

    Langston, L.; Boyle, M.

    1985-01-01

    Matrix of ink dots covers matte surface of polyester drafting film. Film placed against wind-tunnel wall. Layer of methyl salicylate (oil of wintergreen) sprayed over dotted area. Ink dot streaklines show several characteristics of flow, including primary saddle point of separations, primary horseshoe vortex and smaller vortex at cylinder/ endwall junction. Surface streamline flow visualization technique suitable for use in low-speed windtunnels or other low-speed gas flows.

  20. 12 CFR 225.13 - Factors considered in acting on bank acquisition proposals.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... authorities in its home country, as provided in § 211.24(c)(1)(ii) of the Board's Regulation K (12 CFR 211.24....) and regulations issued thereunder, including the Board's Regulation BB (12 CFR part 228). (c... 12 Banks and Banking 3 2014-01-01 2014-01-01 false Factors considered in acting on...

  1. 75 FR 58389 - Federal Acquisition Regulation; Information Collection; American Recovery and Reinvestment Act...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-24

    ... Reporting Requirements for Prime Contractors AGENCY: Department of Defense (DOD), General Services... American Recovery and Reinvestment Act-Reporting Requirements--One Time Reporting Requirements for Prime... for which the burden is imposed on the prime contractor under the FAR requirements include...

  2. 75 FR 58388 - Federal Acquisition Regulation; Information Collection; American Recovery and Reinvestment Act...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-24

    ... Reporting for Prime Contractors AGENCY: Department of Defense (DOD), General Services Administration (GSA... Recovery and Reinvestment Act--Quarterly Reporting for Prime Contractors. Public comments are particularly...- mail to ernest.woodson@gsa.gov . ] SUPPLEMENTARY INFORMATION: A. Purpose Quarterly Reporting for...

  3. Interactive Streamline Exploration and Manipulation Using Deformation

    SciTech Connect

    Tong, Xin; Chen, Chun-Ming; Shen, Han-Wei; Wong, Pak C.

    2015-01-12

    Occlusion presents a major challenge in visualizing three-dimensional flow fields with streamlines. Displaying too many streamlines at once makes it difficult to locate interesting regions, but displaying too few streamlines risks missing important features. A more ideal streamline exploration model is to allow the viewer to freely move across the field that has been populated with interesting streamlines and pull away the streamlines that cause occlusion so that the viewer can inspect the hidden ones in detail. In this paper, we present a streamline deformation algorithm that supports such user-driven interaction with three-dimensional flow fields. We define a view-dependent focus+context technique that moves the streamlines occluding the focus area using a novel displacement model. To preserve the context surrounding the user-chosen focus area, we propose two shape models to define the transition zone for the surrounding streamlines, and the displacement of the contextual streamlines is solved interactively with a goal of preserving their shapes as much as possible. Based on our deformation model, we design an interactive streamline exploration tool using a lens metaphor. Our system runs interactively so that users can move their focus and examine the flow field freely.

  4. Streamline-based microfluidic device

    NASA Technical Reports Server (NTRS)

    Tai, Yu-Chong (Inventor); Zheng, Siyang (Inventor); Kasdan, Harvey (Inventor)

    2013-01-01

    The present invention provides a streamline-based device and a method for using the device for continuous separation of particles including cells in biological fluids. The device includes a main microchannel and an array of side microchannels disposed on a substrate. The main microchannel has a plurality of stagnation points with a predetermined geometric design, for example, each of the stagnation points has a predetermined distance from the upstream edge of each of the side microchannels. The particles are separated and collected in the side microchannels.

  5. Special Report on The Department of Energy's Acquisition Workforce and its Impact on Implementation of the American Recovery and Reinvestment Act of 2009

    SciTech Connect

    2009-03-01

    Signed by the President on February 17, 2009, the American Recovery and Reinvestment Act of 2009 (Recovery Act) seeks to strengthen the U.S. economy through the creation of new jobs, aiding State and local governments with budget shortfalls, and investing in the long-term health of the Nation's economic prosperity. Under the Recovery Act, the Department of Energy will receive approximately $40 billion for various energy, environmental, and science programs and initiatives. To have an immediate stimulative impact on the U.S. economy, the Department's stated goal is to ensure that these funds are spent as expeditiously as possible, without risking transparency and accountability. Given the Department's almost total reliance on the acquisition process (contracts, grants, cooperative agreements, etc.) to carry out its mission, enhanced focus on contract administration and, specifically, the work performed by Federal acquisition officials is of vital importance as the unprecedented flow of funds begins under the Recovery Act.

  6. CASE STUDIES EXAMINING LCA STREAMLINING TECHNIQUES

    EPA Science Inventory

    Pressure is mounting for more streamlined Life Cycle Assessment (LCA) methods that allow for evaluations that are quick and simple, but accurate. As part of an overall research effort to develop and demonstrate streamlined LCA, the U.S. Environmental Protection Agency has funded ...

  7. View-Dependent Streamline Deformation and Exploration.

    PubMed

    Tong, Xin; Edwards, John; Chen, Chun-Ming; Shen, Han-Wei; Johnson, Chris R; Wong, Pak Chung

    2016-07-01

    Occlusion presents a major challenge in visualizing 3D flow and tensor fields using streamlines. Displaying too many streamlines creates a dense visualization filled with occluded structures, but displaying too few streams risks losing important features. We propose a new streamline exploration approach by visually manipulating the cluttered streamlines by pulling visible layers apart and revealing the hidden structures underneath. This paper presents a customized view-dependent deformation algorithm and an interactive visualization tool to minimize visual clutter in 3D vector and tensor fields. The algorithm is able to maintain the overall integrity of the fields and expose previously hidden structures. Our system supports both mouse and direct-touch interactions to manipulate the viewing perspectives and visualize the streamlines in depth. By using a lens metaphor of different shapes to select the transition zone of the targeted area interactively, the users can move their focus and examine the vector or tensor field freely. PMID:26600061

  8. View-Dependent Streamline Deformation and Exploration

    PubMed Central

    Tong, Xin; Edwards, John; Chen, Chun-Ming; Shen, Han-Wei; Johnson, Chris R.; Wong, Pak Chung

    2016-01-01

    Occlusion presents a major challenge in visualizing 3D flow and tensor fields using streamlines. Displaying too many streamlines creates a dense visualization filled with occluded structures, but displaying too few streams risks losing important features. We propose a new streamline exploration approach by visually manipulating the cluttered streamlines by pulling visible layers apart and revealing the hidden structures underneath. This paper presents a customized view-dependent deformation algorithm and an interactive visualization tool to minimize visual clutter in 3D vector and tensor fields. The algorithm is able to maintain the overall integrity of the fields and expose previously hidden structures. Our system supports both mouse and direct-touch interactions to manipulate the viewing perspectives and visualize the streamlines in depth. By using a lens metaphor of different shapes to select the transition zone of the targeted area interactively, the users can move their focus and examine the vector or tensor field freely. PMID:26600061

  9. Streamlining Throughput with the Implementation of a CT Coordinator.

    PubMed

    Johnson, Kathleen; Johnson, Charles E; Porter, Linda; Bryant, Karen

    2016-01-01

    Imaging departments today are challenged with streamlining processes to keep up with advancements in healthcare, the increasing complexity of imaging studies and procedures, and bundling of charges for services rendered. Ordering providers are often required to get insurance pre-authorizations for imaging orders, and what is pre-authorized must be the study/procedure performed or reimbursement is not guaranteed. Insurance companies have inhibited radiologists from providing optimal service by placing restrictions on changing orders per radiologist protocol to best meet the individual needs of each patient. Many healthcare systems that are using a central scheduling model are losing money due to scans and procedures being inappropriately ordered and pre-authorized. Implementing a computed tomography (CT) coordinator can streamline throughput of imaging services in radiology departments. The CT improvement project described here used a Lean methodology Plan-Do-Check-Act (PDCA) approach to increase the effectiveness of an organization's ability to maximize process efficiency and revenue. PMID:26939293

  10. Streamlined Islands in Ares Valles

    NASA Technical Reports Server (NTRS)

    2002-01-01

    (Released 10 June 2002) The Science Although liquid water is not stable on the surface of Mars today, there is substantial geologic evidence that large quantities of water once flowed across the surface in the distant past. Streamlined islands, shown here, are one piece of evidence for this ancient water. The tremendous force of moving water, possibly from a catastrophic flood, carved these teardrop-shaped islands within a much larger channel called Ares Valles. The orientation of the islands can be used as an indicator of the direction the water flowed. The islands have a blunt end that is usually associated with an obstacle, commonly an impact crater. The crater is resistant to erosion and creates a geologic barrier around which the water must flow. As the water flows past the obstacle, its erosive power is directed outward, leaving the area in the lee of the obstacle relatively uneroded. However, some scientists have also argued that the area in the lee of the obstacle might be a depositional zone, where material is dropped out of the water as it briefly slows. The ridges observed on the high-standing terrain in the leeward parts of the islands may be benches carved into the rock that mark the height of the water at various times during the flood, or they might be indicative of layering in the leeward rock. As the water makes its way downstream, the interference of the water flow by the obstacle is reduced, and the water that was diverted around the obstacle rejoins itself at the narrow end of the island. Therefore, the direction of the water flow is parallel to the orientation of the island, and the narrow end of the island points downstream. In addition to the streamlined islands, the channel floor exhibits fluting that is also suggestive of flowing water. The flutes (also known as longitudinal grooves) are also parallel to the direction of flow, indicating that the water flow was turbulent and probably quite fast, which is consistent with the hypothesized

  11. Analytic streamline calculations on linear tetrahedra

    SciTech Connect

    Diachin, D.P.; Herzog, J.A.

    1997-06-01

    Analytic solutions for streamlines within tetrahedra are used to define operators that accurately and efficiently compute streamlines. The method presented here is based on linear interpolation, and therefore produces exact results for linear velocity fields. In addition, the method requires less computation than the forward Euler numerical method. Results are presented that compare accuracy measurements of the method with forward Euler and fourth order Runge-Kutta applied to both a linear and a nonlinear velocity field.

  12. 78 FR 18344 - Federal Acquisition Regulation; Submission for OMB Review; Buy American Act-Free Trade Agreements...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-26

    ... Regulation; Submission for OMB Review; Buy American Act--Free Trade Agreements--Israeli Trade Act Certificate... previously approved information collection requirement concerning the Buy American Act--Free Trade Agreements... comments identified by Information Collection 9000- 0130, Buy American Act--Free Trade......

  13. Streamlined Islands in Ares Valles

    NASA Technical Reports Server (NTRS)

    2002-01-01

    (Released 10 June 2002) The Science Although liquid water is not stable on the surface of Mars today, there is substantial geologic evidence that large quantities of water once flowed across the surface in the distant past. Streamlined islands, shown here, are one piece of evidence for this ancient water. The tremendous force of moving water, possibly from a catastrophic flood, carved these teardrop-shaped islands within a much larger channel called Ares Valles. The orientation of the islands can be used as an indicator of the direction the water flowed. The islands have a blunt end that is usually associated with an obstacle, commonly an impact crater. The crater is resistant to erosion and creates a geologic barrier around which the water must flow. As the water flows past the obstacle, its erosive power is directed outward, leaving the area in the lee of the obstacle relatively uneroded. However, some scientists have also argued that the area in the lee of the obstacle might be a depositional zone, where material is dropped out of the water as it briefly slows. The ridges observed on the high-standing terrain in the leeward parts of the islands may be benches carved into the rock that mark the height of the water at various times during the flood, or they might be indicative of layering in the leeward rock. As the water makes its way downstream, the interference of the water flow by the obstacle is reduced, and the water that was diverted around the obstacle rejoins itself at the narrow end of the island. Therefore, the direction of the water flow is parallel to the orientation of the island, and the narrow end of the island points downstream. In addition to the streamlined islands, the channel floor exhibits fluting that is also suggestive of flowing water. The flutes (also known as longitudinal grooves) are also parallel to the direction of flow, indicating that the water flow was turbulent and probably quite fast, which is consistent with the hypothesized

  14. Impact assessment: Eroding benefits through streamlining?

    SciTech Connect

    Bond, Alan; Pope, Jenny; Morrison-Saunders, Angus; Retief, Francois; Gunn, Jill A.E.

    2014-02-15

    This paper argues that Governments have sought to streamline impact assessment in recent years (defined as the last five years) to counter concerns over the costs and potential for delays to economic development. We hypothesise that this has had some adverse consequences on the benefits that subsequently accrue from the assessments. This hypothesis is tested using a framework developed from arguments for the benefits brought by Environmental Impact Assessment made in 1982 in the face of the UK Government opposition to its implementation in a time of economic recession. The particular benefits investigated are ‘consistency and fairness’, ‘early warning’, ‘environment and development’, and ‘public involvement’. Canada, South Africa, the United Kingdom and Western Australia are the jurisdictions tested using this framework. The conclusions indicate that significant streamlining has been undertaken which has had direct adverse effects on some of the benefits that impact assessment should deliver, particularly in Canada and the UK. The research has not examined whether streamlining has had implications for the effectiveness of impact assessment, but the causal link between streamlining and benefits does sound warning bells that merit further investigation. -- Highlights: • Investigation of the extent to which government has streamlined IA. • Evaluation framework was developed based on benefits of impact assessment. • Canada, South Africa, the United Kingdom, and Western Australia were examined. • Trajectory in last five years is attrition of benefits of impact assessment.

  15. Implications of streamlining theory for microbial ecology

    PubMed Central

    Giovannoni, Stephen J; Cameron Thrash, J; Temperton, Ben

    2014-01-01

    Whether a small cell, a small genome or a minimal set of chemical reactions with self-replicating properties, simplicity is beguiling. As Leonardo da Vinci reportedly said, ‘simplicity is the ultimate sophistication'. Two diverging views of simplicity have emerged in accounts of symbiotic and commensal bacteria and cosmopolitan free-living bacteria with small genomes. The small genomes of obligate insect endosymbionts have been attributed to genetic drift caused by small effective population sizes (Ne). In contrast, streamlining theory attributes small cells and genomes to selection for efficient use of nutrients in populations where Ne is large and nutrients limit growth. Regardless of the cause of genome reduction, lost coding potential eventually dictates loss of function. Consequences of reductive evolution in streamlined organisms include atypical patterns of prototrophy and the absence of common regulatory systems, which have been linked to difficulty in culturing these cells. Recent evidence from metagenomics suggests that streamlining is commonplace, may broadly explain the phenomenon of the uncultured microbial majority, and might also explain the highly interdependent (connected) behavior of many microbial ecosystems. Streamlining theory is belied by the observation that many successful bacteria are large cells with complex genomes. To fully appreciate streamlining, we must look to the life histories and adaptive strategies of cells, which impose minimum requirements for complexity that vary with niche. PMID:24739623

  16. Systems Biology and Ecology of Streamlined Bacterioplankton

    NASA Astrophysics Data System (ADS)

    Giovannoni, S. J.

    2014-12-01

    The salient feature of streamlined cells is their small genome size, but "streamlining" refers more generally to selection that favors minimization of cell size and complexity. The essence of streamlining theory is that selection is most efficient in organisms that have large effective population sizes, and, in nutrient-limited systems, favors cell architecture that minimizes resources required for replication. Regardless of the cause of genome reduction, lost coding potential eventually dictates loss of function, raising the questions, what genome features are expendable, and how do cells become highly successful with a minimal genomic repertoire? One consequence of reductive evolution in streamlined organisms is atypical patterns of prototrophy, for example the recent discovery of a requirement for the thiamin precursor 4-amino-5-hydroxymethyl-2-methylpyrimidine in some plankton taxa. Examples such as this fit within the framework of the Black Queen Hypothesis, which describes genome reduction that results in reliance on community goods and increased community connectivity. Other examples of genome reduction include losses of regulatory functions, or replacement with simpler regulatory systems, and increased metabolic integration. In one such case, in the order Pelagibacterales, the PII system for regulating responses to N limitation has been replaced with a simpler system composed of fewer genes. Both the absence of common regulatory systems and atypical patterns of prototrophy have been linked to difficulty in culturing Pelagibacterales, lending credibility to the idea that streamlining might broadly explain the phenomenon of the uncultured microbial majority. The success of streamlined osmotrophic bacterioplankton suggests that they successfully compete for labile organic matter and capture a large share of this resource, but an alternative theory postulates they are not good resource competitors and instead prosper by avoiding predation. The answers to these

  17. 75 FR 34279 - Federal Acquisition Regulation; FAR Case 2009-011, American Recovery and Reinvestment Act of 2009...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-16

    ... published an interim rule in the Federal Register at 74 FR 14646 on March 31, 2009, to implement the... published in the Federal Register at 74 FR 22810 on May 14, 2009. The interim rule added alternate clauses..., Acquisition Policy Division. 0 Accordingly, the interim rule published in the Federal Register at 74 FR...

  18. 75 FR 19827 - Acquisition Regulation Rewrite

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-15

    ...The Department of the Interior (DOI) is taking interim final action on administrative changes to the Department of the Interior Acquisition Regulation (DIAR). This action revises the DIAR, 48 CFR Chapter 14, but does not impose any new requirements on DOI contractors. The revisions in this interim final rule will make minor corrections to and streamline DOI acquisition processes to be......

  19. 76 FR 75825 - Streamlining Inherited Regulations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-05

    ...The Bureau of Consumer Financial Protection (the Bureau) is requesting specific suggestions from the public for streamlining regulations it recently inherited from other Federal agencies. This document asks the public to identify provisions of the inherited regulations that the Bureau should make the highest priority for updating, modifying, or eliminating because they are outdated, unduly......

  20. Overhead Projection Cell for Streamline Flow

    ERIC Educational Resources Information Center

    Waage, Harold M.

    1969-01-01

    Describes the construction and operation of an overhead projection apparatus designed to demonstrate streamline flow of a liquid. The apparatus consists of a Plexiglass tank containing water in which plates forming the cell are submerged, a constant level reservoir, an overflow device and a system for marking the flow lines with a dye. (LC)

  1. Streamlining Energy Efficiency for Schools Act of 2011

    THOMAS, 112th Congress

    Sen. Udall, Mark [D-CO

    2011-04-14

    04/14/2011 Read twice and referred to the Committee on Energy and Natural Resources. (text of measure as introduced: CR S2517-2518) (All Actions) Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

  2. Streamlining Energy Efficiency for Schools Act of 2014

    THOMAS, 113th Congress

    Rep. Cartwright, Matt [D-PA-17

    2014-02-26

    06/24/2014 Received in the Senate and Read twice and referred to the Committee on Energy and Natural Resources. (All Actions) Tracker: This bill has the status Passed HouseHere are the steps for Status of Legislation:

  3. Streamlining Energy Efficiency for Schools Act of 2013

    THOMAS, 113th Congress

    Sen. Udall, Mark [D-CO

    2013-06-03

    06/25/2013 Committee on Energy and Natural Resources Subcommittee on Energy. Hearings held. With printed Hearing: S.Hrg. 113-70. (All Actions) Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

  4. Streamlining Claims Processing for Federal Contractor Employees Act

    THOMAS, 112th Congress

    Rep. Walberg, Tim [R-MI-7

    2012-09-11

    11/14/2012 Received in the Senate and Read twice and referred to the Committee on Homeland Security and Governmental Affairs. (All Actions) Tracker: This bill has the status Passed HouseHere are the steps for Status of Legislation:

  5. Sarbanes-Oxley Act and Acquisition Trends: Information Technology Managers' Perceptions of the Impact on Information Technology Outsourcing

    ERIC Educational Resources Information Center

    Bui-Le, Linda Thanhthuy

    2010-01-01

    This research study provides a platform for extending the body of knowledge associated with the sourcing of Information Technology (IT) in the legal environment determined by the Sarbanes-Oxley Act. This analysis of IT sourcing was conducted via consideration of legal and situational factors which may influence an IT manager's decision to…

  6. Streamlined ratemaking: recognizing challenges for consumers

    SciTech Connect

    Pollock, Jeffry

    2010-11-15

    Streamlined ratemaking can be problematic if improper ratemaking practices are employed, consumers are forced to bear risks that have traditionally been born by utilities and their shareholders, and utilities are no longer strongly motivated to provide safe and reliable service at the lowest reasonable cost. Measures can be taken that help preserve the regulator's role as a surrogate for competition, thereby ensuring that rates are both just and reasonable. (author)

  7. Streamlining the RI/FS process

    SciTech Connect

    Dumas, L.; Doss, R.C.

    1998-07-01

    In 1994, Pacific Gas and Electric Company (PG and E) contracted with CH2M HILL to manage remedial investigations and feasibility studies (RI/FS) at its former manufactured gas plant (MGP) sites in Chico, Willows, and Marysville, California. These three sites had similar histories, MGP-related contaminants, similar geologic settings, and geographically were close together. Recognizing the advantages that may be gained, both in time and money, by streamlining the RI/FS process, PG and E and CH2M HILL combined the sites into one project. From the start of the project, PG and E and CH2M HILL looked for an implemented changes to the RI/FS process to streamline the project. These changes included combining deliverables, linking field programs at the three sites, and negotiating bulk discounts on laboratory and other services by combining the work to be done at the three sites under one contract. CH2M HILL later proposed additional measures to streamline the project that were eventually adopted by both PG and E and the regulatory agencies. PG and E and CH2M HILL are currently working with the regulatory agencies to negotiate realistic measures to address contaminants in soil and groundwater, and are jointly preparing the FS with the regulatory agencies using a unique means of documentation.

  8. The length distribution of streamline segments in homogeneous isotropic decaying turbulence

    NASA Astrophysics Data System (ADS)

    Schaefer, P.; Gampert, M.; Peters, N.

    2012-04-01

    by Schaefer et al. ["Fast and slow changes of the length of gradient trajectories in homogenous shear turbulence," in Advances in Turbulence XII, edited by B. Eckhardt (Springer-Verlag, Berlin, 2009), pp. 565-572] we will refer to the morphological part of the evolution of streamline segments as slow changes while the topological part of the evolution is referred to as fast changes. This separation yields a transport equation for the probability density function (pdf) P(l) of the arclength l of streamline segments in which the slow changes translate into a convection and a diffusion term when terms up to second order are included and the fast changes yield integral terms. The overall temporal evolution (morphological and topological) of the arclength l of streamline segments is analyzed and associated with the motion of the above isosurface. This motion is diffusion controlled for small segments, while large segments are mainly subject to strain and pressure fluctuations. The convection velocity corresponds to the first order jump moment, while the diffusion term includes the second order jump moment. It is concluded, both theoretically and from direct numerical simulations (DNS) data of homogeneous isotropic decaying turbulence at two different Reynolds numbers, that the normalized first order jump moment is quasi-universal, while the second order one is proportional to the inverse of the square root of the Taylor based Reynolds number Re_{λ }^{-1/2}. Its inclusion thus represents a small correction in the limit of large Reynolds numbers. Numerical solutions of the pdf equation yield a good agreement with the pdf obtained from the DNS data. The interplay of viscous drift acting on small segments and linear strain acting on large segments yield, as it has already been concluded for dissipation elements, that the mean length of streamline segments should scale with Taylor microscale.

  9. STREAMLINED LIFE CYCLE ASSESSMENT: A FINAL REPORT FROM THE SETAC-NORTH AMERICA STREAMLINED LCA WORKGROUP

    EPA Science Inventory

    The original goal of the Streamlined LCA workgroup was to define and document a process for a shortened form of LCA. At the time, because of the large amount of data needed to do a cradle-to-grave evaluation, it was believed that in addition to such a "full" LCA approach there w...

  10. Streamlining environmental product declarations: a stage model

    NASA Astrophysics Data System (ADS)

    Lefebvre, Elisabeth; Lefebvre, Louis A.; Talbot, Stephane; Le Hen, Gael

    2001-02-01

    General public environmental awareness and education is increasing, therefore stimulating the demand for reliable, objective and comparable information about products' environmental performances. The recently published standard series ISO 14040 and ISO 14025 are normalizing the preparation of Environmental Product Declarations (EPDs) containing comprehensive information relevant to a product's environmental impact during its life cycle. So far, only a few environmentally leading manufacturing organizations have experimented the preparation of EPDs (mostly from Europe), demonstrating its great potential as a marketing weapon. However the preparation of EPDs is a complex process, requiring collection and analysis of massive amounts of information coming from disparate sources (suppliers, sub-contractors, etc.). In a foreseeable future, the streamlining of the EPD preparation process will require product manufacturers to adapt their information systems (ERP, MES, SCADA) in order to make them capable of gathering, and transmitting the appropriate environmental information. It also requires strong functional integration all along the product supply chain in order to ensure that all the information is made available in a standardized and timely manner. The goal of the present paper is two fold: first to propose a transitional model towards green supply chain management and EPD preparation; second to identify key technologies and methodologies allowing to streamline the EPD process and subsequently the transition toward sustainable product development

  11. Streamlining Collaborative Planning in Spacecraft Mission Architectures

    NASA Technical Reports Server (NTRS)

    Misra, Dhariti; Bopf, Michel; Fishman, Mark; Jones, Jeremy; Kerbel, Uri; Pell, Vince

    2000-01-01

    During the past two decades, the planning and scheduling community has substantially increased the capability and efficiency of individual planning and scheduling systems. Relatively recently, research work to streamline collaboration between planning systems is gaining attention. Spacecraft missions stand to benefit substantially from this work as they require the coordination of multiple planning organizations and planning systems. Up to the present time this coordination has demanded a great deal of human intervention and/or extensive custom software development efforts. This problem will become acute with increased requirements for cross-mission plan coordination and multi -spacecraft mission planning. The Advanced Architectures and Automation Branch of NASA's Goddard Space Flight Center is taking innovative steps to define collaborative planning architectures, and to identify coordinated planning tools for Cross-Mission Campaigns. Prototypes are being developed to validate these architectures and assess the usefulness of the coordination tools by the planning community. This presentation will focus on one such planning coordination too], named Visual Observation Layout Tool (VOLT), which is currently being developed to streamline the coordination between astronomical missions

  12. A STREAMLINE APPROACH FOR HISTORY-MATCHING PRODUCTION DATA

    SciTech Connect

    Yuandong Wang; Anthony R. Kovscek

    2001-06-01

    This study proposes and develops a streamline approach for inferring field-scale effective permeability distributions based on dynamic production data including producer water-cut curve, well pressures, and rates. The streamline-based inverse approach simplifies the history-matching process significantly. The basic idea is to relate the water-cut curve at a producer to the water breakthrough of individual streamlines. By adjusting the effective permeability along streamlines, the breakthrough time of each streamline is found that reproduces the reference producer fractional-flow curve. Then the permeability modification along each streamline is mapped onto cells of the simulation grid. Modifying effective permeability at the streamline level greatly reduces the size of the inverse problem compared to modifications at the grid-block level. The approach outlined here is relatively direct and rapid. Limitations include that the forward flow problem must be solvable with streamlines, streamline locations do not evolve radically during displacement, no new wells are included, and relatively noise-free production data is available. It works well for reservoirs where heterogeneity determines flow patterns. Example cases illustrate computational efficiency, generality, and robustness of the proposed procedure. Advantages and limitations of this work, and the scope of future study, are also discussed.

  13. Similarity-Guided Streamline Placement with Error Evaluation

    SciTech Connect

    Chen, Y; Cohen, J D; Krolik, J H

    2007-08-15

    Most streamline generation algorithms either provide a particular density of streamlines across the domain or explicitly detect features, such as critical points, and follow customized rules to emphasize those features. However, the former generally includes many redundant streamlines, and the latter requires Boolean decisions on which points are features (and may thus suffer from robustness problems for real-world data). We take a new approach to adaptive streamline placement for steady vector fields in 2D and 3D. We define a metric for local similarity among streamlines and use this metric to grow streamlines from a dense set of candidate seed points. The metric considers not only Euclidean distance, but also a simple statistical measure of shape and directional similarity. Without explicit feature detection, our method produces streamlines that naturally accentuate regions of geometric interest. In conjunction with this method, we also propose a quantitative error metric for evaluating a streamline representation based on how well it preserves the information from the original vector field. This error metric reconstructs a vector field from points on the streamline representation and computes a difference of the reconstruction from the original vector field.

  14. Hierarchical streamline bundles for visualizing 2D flow fields.

    SciTech Connect

    Shene, Ching-Kuang; Wang, Chaoli; Yu, Hongfeng; Chen, Jacqueline H.

    2010-08-01

    We present hierarchical streamline bundles, a new approach to simplifying and visualizing 2D flow fields. Our method first densely seeds a flow field and produces a large number of streamlines that capture important flow features such as critical points. Then, we group spatially neighboring and geometrically similar streamlines to construct a hierarchy from which we extract streamline bundles at different levels of detail. Streamline bundles highlight multiscale flow features and patterns through a clustered yet non-cluttered display. This selective visualization strategy effectively accentuates visual foci and therefore is able to convey the desired insight into the flow fields. The hierarchical streamline bundles we have introduced offer a new way to characterize and visualize the flow structure and patterns in multiscale fashion. Streamline bundles highlight critical points clearly and concisely. Exploring the hierarchy allows a complete visualization of important flow features. Thanks to selective streamline display and flexible LOD refinement, our multiresolution technique is scalable and is promising for viewing large and complex flow fields. In the future, we would like to seek a cost-effective way to generate streamlines without enforcing the dense seeding condition. We will also extend this approach to handle real-world 3D complex flow fields.

  15. Damage Detection with Streamlined Structural Health Monitoring Data

    PubMed Central

    Li, Jian; Deng, Jun; Xie, Weizhi

    2015-01-01

    The huge amounts of sensor data generated by large scale sensor networks in on-line structural health monitoring (SHM) systems often overwhelms the systems’ capacity for data transmission and analysis. This paper presents a new concept for an integrated SHM system in which a streamlined data flow is used as a unifying thread to integrate the individual components of on-line SHM systems. Such an integrated SHM system has a few desirable functionalities including embedded sensor data compression, interactive sensor data retrieval, and structural knowledge discovery, which aim to enhance the reliability, efficiency, and robustness of on-line SHM systems. Adoption of this new concept will enable the design of an on-line SHM system with more uniform data generation and data handling capacity for its subsystems. To examine this concept in the context of vibration-based SHM systems, real sensor data from an on-line SHM system comprising a scaled steel bridge structure and an on-line data acquisition system with remote data access was used in this study. Vibration test results clearly demonstrated the prominent performance characteristics of the proposed integrated SHM system including rapid data access, interactive data retrieval and knowledge discovery of structural conditions on a global level. PMID:25884788

  16. Damage detection with streamlined structural health monitoring data.

    PubMed

    Li, Jian; Deng, Jun; Xie, Weizhi

    2015-01-01

    The huge amounts of sensor data generated by large scale sensor networks in on-line structural health monitoring (SHM) systems often overwhelms the systems' capacity for data transmission and analysis. This paper presents a new concept for an integrated SHM system in which a streamlined data flow is used as a unifying thread to integrate the individual components of on-line SHM systems. Such an integrated SHM system has a few desirable functionalities including embedded sensor data compression, interactive sensor data retrieval, and structural knowledge discovery, which aim to enhance the reliability, efficiency, and robustness of on-line SHM systems. Adoption of this new concept will enable the design of an on-line SHM system with more uniform data generation and data handling capacity for its subsystems. To examine this concept in the context of vibration-based SHM systems, real sensor data from an on-line SHM system comprising a scaled steel bridge structure and an on-line data acquisition system with remote data access was used in this study. Vibration test results clearly demonstrated the prominent performance characteristics of the proposed integrated SHM system including rapid data access, interactive data retrieval and knowledge discovery of structural conditions on a global level. PMID:25884788

  17. Quantum mechanical streamlines. I - Square potential barrier

    NASA Technical Reports Server (NTRS)

    Hirschfelder, J. O.; Christoph, A. C.; Palke, W. E.

    1974-01-01

    Exact numerical calculations are made for scattering of quantum mechanical particles hitting a square two-dimensional potential barrier (an exact analog of the Goos-Haenchen optical experiments). Quantum mechanical streamlines are plotted and found to be smooth and continuous, to have continuous first derivatives even through the classical forbidden region, and to form quantized vortices around each of the nodal points. A comparison is made between the present numerical calculations and the stationary wave approximation, and good agreement is found between both the Goos-Haenchen shifts and the reflection coefficients. The time-independent Schroedinger equation for real wavefunctions is reduced to solving a nonlinear first-order partial differential equation, leading to a generalization of the Prager-Hirschfelder perturbation scheme. Implications of the hydrodynamical formulation of quantum mechanics are discussed, and cases are cited where quantum and classical mechanical motions are identical.

  18. Honeybee flight: a novel 'streamlining' response.

    PubMed

    Luu, Tien; Cheung, Allen; Ball, David; Srinivasan, Mandyam V

    2011-07-01

    Animals that move rapidly through the air can save considerable energy by reducing the drag that they need to overcome during flight. We describe a novel 'streamlining' response in tethered, flying honeybees in which the abdomen is held in a raised position when the visual system is exposed to a pattern of image motion that is characteristic of forward flight. This visually evoked response, which can be elicited without exposing the insect to any airflow, presumably serves to reduce the aerodynamic drag that would otherwise be produced by the abdomen during real flight. The response is critically dependent on the presence of appropriate image motion everywhere within the large field of view of the insect. Thus, our results also underscore the importance of using panoramic stimulation for the study of visually guided flight in insects, and reveal the relative importance of various regions of the visual field in assessing the speed of flight through the environment. PMID:21653815

  19. A Recipe for Streamlining Mission Management

    NASA Technical Reports Server (NTRS)

    Mitchell, Andrew E.; Semancik, Susan K.

    2004-01-01

    This paper describes a project's design and implementation for streamlining mission management with knowledge capture processes across multiple organizations of a NASA directorate. Thc project's focus is on standardizing processes and reports; enabling secure information access and case of maintenance; automating and tracking appropriate workflow rules through process mapping; and infusing new technologies. This paper will describe a small team's experiences using XML technologies through an enhanced vendor suite of applications integrated on Windows-based platforms called the Wallops Integrated Scheduling and Document Management System (WISDMS). This paper describes our results using this system in a variety of endeavors, including providing range project scheduling and resource management for a Range and Mission Management Office; implementing an automated Customer Feedback system for a directorate; streamlining mission status reporting across a directorate; and initiating a document management, configuration management and portal access system for a Range Safety Office's programs. The end result is a reduction of the knowledge gap through better integration and distribution of information, improved process performance, automated metric gathering, and quicker identification of problem areas and issues. However, the real proof of the pudding comes through overcoming the user's reluctance to replace familiar, seasoned processes with new technology ingredients blended with automated procedures in an untested recipe. This paper shares some of the team's observations that led to better implementation techniques, as well as an IS0 9001 Best Practices citation. This project has provided a unique opportunity to advance NASA's competency in new technologies, as well as to strategically implement them within an organizational structure, while wetting the appetite for continued improvements in mission management.

  20. A streamlined failure mode and effects analysis

    SciTech Connect

    Ford, Eric C. Smith, Koren; Terezakis, Stephanie; Croog, Victoria; Gollamudi, Smitha; Gage, Irene; Keck, Jordie; DeWeese, Theodore; Sibley, Greg

    2014-06-15

    Purpose: Explore the feasibility and impact of a streamlined failure mode and effects analysis (FMEA) using a structured process that is designed to minimize staff effort. Methods: FMEA for the external beam process was conducted at an affiliate radiation oncology center that treats approximately 60 patients per day. A structured FMEA process was developed which included clearly defined roles and goals for each phase. A core group of seven people was identified and a facilitator was chosen to lead the effort. Failure modes were identified and scored according to the FMEA formalism. A risk priority number,RPN, was calculated and used to rank failure modes. Failure modes with RPN > 150 received safety improvement interventions. Staff effort was carefully tracked throughout the project. Results: Fifty-two failure modes were identified, 22 collected during meetings, and 30 from take-home worksheets. The four top-ranked failure modes were: delay in film check, missing pacemaker protocol/consent, critical structures not contoured, and pregnant patient simulated without the team's knowledge of the pregnancy. These four failure modes hadRPN > 150 and received safety interventions. The FMEA was completed in one month in four 1-h meetings. A total of 55 staff hours were required and, additionally, 20 h by the facilitator. Conclusions: Streamlined FMEA provides a means of accomplishing a relatively large-scale analysis with modest effort. One potential value of FMEA is that it potentially provides a means of measuring the impact of quality improvement efforts through a reduction in risk scores. Future study of this possibility is needed.

  1. 75 FR 15689 - Streamlined Procedure for Appeal Brief Review

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-30

    ... United States Patent and Trademark Office Streamlined Procedure for Appeal Brief Review AGENCY: United... Trademark Office (USPTO) is streamlining the procedure for the review of appeal briefs to increase the... responsibility for determining whether appeal briefs filed in patent applications comply with the...

  2. On a modified streamline curvature method for the Euler equations

    NASA Technical Reports Server (NTRS)

    Cordova, Jeffrey Q.; Pearson, Carl E.

    1988-01-01

    A modification of the streamline curvature method leads to a quasilinear second-order partial differential equation for the streamline coordinate function. The existence of a stream function is not required. The method is applied to subsonic and supersonic nozzle flow, and to axially symmetric flow with swirl. For many situations, the associated numerical method is both fast and accurate.

  3. Cooperative phenomena in laminar fluids: Observation of streamlines

    SciTech Connect

    Fink, Martin A.; Kretschmer, M.; Hoefner, H.; Konopka, U.; Morfill, G.E.; Ratynskaia, S.; Fortov, V.; Petrov, O.; Usachev, A.; Zobnin, A.

    2005-10-31

    Complex plasmas are an ideal model system to investigate laminar fluids as they allow to study fluids at the kinetic level. At this level we are able to identify streamlines particle by particle. This gives us the ability to research the behaviour of these streamlines as well as the behaviour of each individual particle of the streamline.We carried out our experiments in a modified GEC-RF-Reference cell. We trapped the particles within two glass rings and forced them to form a circular flow by using several stripe electrodes. In this flow the particles behave like an ideal fluid and form streamlines. By putting an obstacle into the flow we reduce the cross-section. To pass through this constricted cross-section some streamlines have to reconnect. After the obstacle the streamlines split up again. An analysis how streamlines split up and reconnect as result of external pressure on the fluid in our system is presented here.Streamlines also occur if two clouds of particles penetrate each other. We call this 'Lane formation'. Results from our PK-4 experiment are presented here also.

  4. Interpreting marine controlled source electromagnetic field behaviour with streamlines

    NASA Astrophysics Data System (ADS)

    Pethick, A. M.; Harris, B. D.

    2013-10-01

    Streamlines represent particle motion within a vector field as a single line structure and have been used in many areas of geophysics. We extend the concept of streamlines to interactive three dimensional representations of the coupled vector fields generated during marine controlled source electromagnetic surveys. These vector fields have measurable amplitudes throughout many hundreds of cubic kilometres. Electromagnetic streamline representation makes electromagnetic interactions within complex geo-electrical setting comprehensible. We develop an interface to rapidly compute and interactively visualise the electric and magnetic fields as streamlines for 3D marine controlled source electromagnetic surveys. Several examples highlighting how interactive use has value in marine controlled source electromagnetic survey design, interpretation and teaching are provided. The first videos of electric, magnetic and Poynting vector field streamlines are provided along with the first published example of the airwave represented as streamlines. We demonstrate that the electric field airwave is a circulating vortex moving down and out from the air-water interface towards the ocean floor. The use of interactive streamlines is not limited to marine controlled source electromagnetic methods. Streamlines provides a high level visualisation tool for interpreting the electric and magnetic field behaviour generated by a wide range of electromagnetic survey configurations for complex 3D geo-electrical settings.

  5. View-dependent streamlines for 3D vector fields.

    PubMed

    Marchesin, Stéphane; Chen, Cheng-Kai; Ho, Chris; Ma, Kwan-Liu

    2010-01-01

    This paper introduces a new streamline placement and selection algorithm for 3D vector fields. Instead of considering the problem as a simple feature search in data space, we base our work on the observation that most streamline fields generate a lot of self-occlusion which prevents proper visualization. In order to avoid this issue, we approach the problem in a view-dependent fashion and dynamically determine a set of streamlines which contributes to data understanding without cluttering the view. Since our technique couples flow characteristic criteria and view-dependent streamline selection we are able achieve the best of both worlds: relevant flow description and intelligible, uncluttered pictures. We detail an efficient GPU implementation of our algorithm, show comprehensive visual results on multiple datasets and compare our method with existing flow depiction techniques. Our results show that our technique greatly improves the readability of streamline visualizations on different datasets without requiring user intervention. PMID:20975200

  6. Scalable Computation of Streamlines on Very Large Datasets

    SciTech Connect

    Pugmire, David; Childs, Hank; Garth, Christoph; Ahern, Sean; Weber, Gunther H.

    2009-09-01

    Understanding vector fields resulting from large scientific simulations is an important and often difficult task. Streamlines, curves that are tangential to a vector field at each point, are a powerful visualization method in this context. Application of streamline-based visualization to very large vector field data represents a significant challenge due to the non-local and data-dependent nature of streamline computation, and requires careful balancing of computational demands placed on I/O, memory, communication, and processors. In this paper we review two parallelization approaches based on established parallelization paradigms (static decomposition and on-demand loading) and present a novel hybrid algorithm for computing streamlines. Our algorithm is aimed at good scalability and performance across the widely varying computational characteristics of streamline-based problems. We perform performance and scalability studies of all three algorithms on a number of prototypical application problems and demonstrate that our hybrid scheme is able to perform well in different settings.

  7. Transportation Security Acquisition Reform Act

    THOMAS, 113th Congress

    Sen. Ayotte, Kelly [R-NH

    2013-12-20

    11/17/2014 Placed on Senate Legislative Calendar under General Orders. Calendar No. 599. (All Actions) Notes: For further action, see H.R.2719, which became Public Law 113-245 on 12/18/2014. Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

  8. 48 CFR 52.211-2 - Availability of Specifications, Standards, and Data Item Descriptions Listed in the Acquisition...

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 2 2013-10-01 2013-10-01 false Availability of Specifications, Standards, and Data Item Descriptions Listed in the Acquisition Streamlining and Standardization Information System (ASSIST). 52.211-2 Section 52.211-2 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION (CONTINUED)...

  9. 48 CFR 52.211-2 - Availability of Specifications, Standards, and Data Item Descriptions Listed in the Acquisition...

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 2 2012-10-01 2012-10-01 false Availability of Specifications, Standards, and Data Item Descriptions Listed in the Acquisition Streamlining and Standardization Information System (ASSIST). 52.211-2 Section 52.211-2 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION (CONTINUED)...

  10. 48 CFR 52.211-2 - Availability of Specifications, Standards, and Data Item Descriptions Listed in the Acquisition...

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 2 2014-10-01 2014-10-01 false Availability of Specifications, Standards, and Data Item Descriptions Listed in the Acquisition Streamlining and Standardization Information System (ASSIST). 52.211-2 Section 52.211-2 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION (CONTINUED)...

  11. Quantum streamlines within the complex quantum Hamilton-Jacobi formalism

    SciTech Connect

    Chou, C.-C.; Wyatt, Robert E.

    2008-09-28

    Quantum streamlines are investigated in the framework of the quantum Hamilton-Jacobi formalism. The local structures of the quantum momentum function (QMF) and the Polya vector field near a stagnation point or a pole are analyzed. Streamlines near a stagnation point of the QMF may spiral into or away from it, or they may become circles centered on this point or straight lines. Additionally, streamlines near a pole display east-west and north-south opening hyperbolic structure. On the other hand, streamlines near a stagnation point of the Polya vector field for the QMF display general hyperbolic structure, and streamlines near a pole become circles enclosing the pole. Furthermore, the local structures of the QMF and the Polya vector field around a stagnation point are related to the first derivative of the QMF; however, the magnitude of the asymptotic structures for these two fields near a pole depends only on the order of the node in the wave function. Two nonstationary states constructed from the eigenstates of the harmonic oscillator are used to illustrate the local structures of these two fields and the dynamics of the streamlines near a stagnation point or a pole. This study presents the abundant dynamics of the streamlines in the complex space for one-dimensional time-dependent problems.

  12. Quantum streamlines within the complex quantum Hamilton-Jacobi formalism.

    PubMed

    Chou, Chia-Chun; Wyatt, Robert E

    2008-09-28

    Quantum streamlines are investigated in the framework of the quantum Hamilton-Jacobi formalism. The local structures of the quantum momentum function (QMF) and the Polya vector field near a stagnation point or a pole are analyzed. Streamlines near a stagnation point of the QMF may spiral into or away from it, or they may become circles centered on this point or straight lines. Additionally, streamlines near a pole display east-west and north-south opening hyperbolic structure. On the other hand, streamlines near a stagnation point of the Polya vector field for the QMF display general hyperbolic structure, and streamlines near a pole become circles enclosing the pole. Furthermore, the local structures of the QMF and the Polya vector field around a stagnation point are related to the first derivative of the QMF; however, the magnitude of the asymptotic structures for these two fields near a pole depends only on the order of the node in the wave function. Two nonstationary states constructed from the eigenstates of the harmonic oscillator are used to illustrate the local structures of these two fields and the dynamics of the streamlines near a stagnation point or a pole. This study presents the abundant dynamics of the streamlines in the complex space for one-dimensional time-dependent problems. PMID:19045012

  13. Effects of streamline curvature on separation prediction

    NASA Astrophysics Data System (ADS)

    Arolla, Sunil K.; Durbin, Paul A.

    2009-11-01

    In this study, the effects of streamline curvature on prediction of flow separation are investigated. The geometry is a circulation control airfoil, a high-lift configuration that has been under extensive research for more than two decades. A tangential jet is blown over a thick, rounded trailing edge, using the Coanda effect to delay separation. An attempt is made to understand, through numerical simulations, the dynamics of turbulent separation and reattachment on the Coanda surface. Highly curved, attached recirculation regions are seen to form. A physics based curvature correction proposed by Pettersson-Reif et al. (1999) is used in conjunction with ζ-f turbulence model. The chord-based Reynolds number is Re = 10^6. Two jet momentum coefficients of Cμ=0.03 and 0.1 are computed. In this paper, comparisons between the computed and experimental pressure distributions, velocity profiles and the position of flow detachment are presented. Comparisons with other closures such as Menter's SST model are also discussed.

  14. 76 FR 15236 - Freedom of Information Act Regulations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-21

    ... Information Fee Schedule and Guidelines published by the Office of Management and Budget at 52 FR 10012 (Mar... Information Act (FOIA). The regulations are being revised to update and streamline the language of several... revisions to the Department's regulations under the FOIA to update and streamline the language of...

  15. Streamlining the process: A strategy for making NEPA work better and cost less

    SciTech Connect

    Hansen, R.P.; Hansen, J.D.; Wolff, T.A.

    1998-05-01

    When the National Environmental Policy Act (NEPA) was enacted in 1969, neither Congress nor the Federal Agencies affected anticipated that implementation of the NEPA process would result in the intolerable delays, inefficiencies, duplication of effort, commitments of excessive financial and personnel resources, and bureaucratic gridlock that have become institutionalized. The 1975 Council on Environmental Quality (CEQ) regulations, which were intended to make the NEPA process more efficient and more useful to decision makers and the public, have either been largely ignored or unintentionally subverted. Agency policy mandates, like those of former Secretary of Energy Hazel R. O`Leary, to ``make NEPA work better and cost less`` have, so far, been disappointingly ineffectual. Federal Agencies have reached the point where almost every constituent of the NEPA process must be subjected to crisis management. This paper focuses on a ten-point strategy for streamlining the NEPA process in order to achieve the Act`s objectives while easing the considerable burden on agencies, the public, and the judicial system. How the ten points are timed and implemented is critical to any successful streamlining.

  16. Efficient seeding and defragmentation of curvature streamlines for colonic polyp detection

    NASA Astrophysics Data System (ADS)

    Zhao, Lingxiao; Botha, Charl P.; Truyen, Roel; Vos, Frans M.; Post, Frits H.

    2008-03-01

    Many computer aided diagnosis (CAD) schemes have been developed for colon cancer detection using Virtual Colonoscopy (VC). In earlier work, we developed an automatic polyp detection method integrating flow visualization techniques, that forms part of the CAD functionality of an existing Virtual Colonoscopy pipeline. Curvature streamlines were used to characterize polyp surface shape. Features derived from curvature streamlines correlated highly with true polyp detections. During testing with a large number of patient data sets, we found that the correlation between streamline features and true polyps could be affected by noise and our streamline generation technique. The seeding and spacing constraints and CT noise could lead to streamline fragmentation, which reduced the discriminating power of our streamline features. In this paper, we present two major improvements of our curvature streamline generation. First, we adapted our streamline seeding strategy to the local surface properties and made the streamline generation faster. It generates a significantly smaller number of seeds but still results in a comparable and suitable streamline distribution. Second, based on our observation that longer streamlines are better surface shape descriptors, we improved our streamline tracing algorithm to produce longer streamlines. Our improved techniques are more effcient and also guide the streamline geometry to correspond better to colonic surface shape. These two adaptations support a robust and high correlation between our streamline features and true positive detections and lead to better polyp detection results.

  17. Animating streamlines with repeated asymmetric patterns for steady flow visualization

    NASA Astrophysics Data System (ADS)

    Yeh, Chih-Kuo; Liu, Zhanping; Lee, Tong-Yee

    2012-01-01

    Animation provides intuitive cueing for revealing essential spatial-temporal features of data in scientific visualization. This paper explores the design of Repeated Asymmetric Patterns (RAPs) in animating evenly-spaced color-mapped streamlines for dense accurate visualization of complex steady flows. We present a smooth cyclic variable-speed RAP animation model that performs velocity (magnitude) integral luminance transition on streamlines. This model is extended with inter-streamline synchronization in luminance varying along the tangential direction to emulate orthogonal advancing waves from a geometry-based flow representation, and then with evenly-spaced hue differing in the orthogonal direction to construct tangential flow streaks. To weave these two mutually dual sets of patterns, we propose an energy-decreasing strategy that adopts an iterative yet efficient procedure for determining the luminance phase and hue of each streamline in HSL color space. We also employ adaptive luminance interleaving in the direction perpendicular to the flow to increase the contrast between streamlines.

  18. Vision and air flow combine to streamline flying honeybees

    PubMed Central

    Taylor, Gavin J.; Luu, Tien; Ball, David; Srinivasan, Mandyam V.

    2013-01-01

    Insects face the challenge of integrating multi-sensory information to control their flight. Here we study a ‘streamlining' response in honeybees, whereby honeybees raise their abdomen to reduce drag. We find that this response, which was recently reported to be mediated by optic flow, is also strongly modulated by the presence of air flow simulating a head wind. The Johnston's organs in the antennae were found to play a role in the measurement of the air speed that is used to control the streamlining response. The response to a combination of visual motion and wind is complex and can be explained by a model that incorporates a non-linear combination of the two stimuli. The use of visual and mechanosensory cues increases the strength of the streamlining response when the stimuli are present concurrently. We propose this multisensory integration will make the response more robust to transient disturbances in either modality. PMID:24019053

  19. 75 FR 4031 - Streamlining Hard-Copy Postage Statement Processing

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-26

    ... 111 Streamlining Hard-Copy Postage Statement Processing AGENCY: Postal Service\\TM\\. ACTION: Proposed rule. SUMMARY: The Postal Service\\TM\\ is proposing to revise Mailing Standards of the United States... statement processes for mailings accepted at Post Offices TM without PostalOne! access. Although we...

  20. Out-of-Core Streamline Visualization on Large Unstructured Meshes

    NASA Technical Reports Server (NTRS)

    Ueng, Shyh-Kuang; Sikorski, K.; Ma, Kwan-Liu

    1997-01-01

    It's advantageous for computational scientists to have the capability to perform interactive visualization on their desktop workstations. For data on large unstructured meshes, this capability is not generally available. In particular, particle tracing on unstructured grids can result in a high percentage of non-contiguous memory accesses and therefore may perform very poorly with virtual memory paging schemes. The alternative of visualizing a lower resolution of the data degrades the original high-resolution calculations. This paper presents an out-of-core approach for interactive streamline construction on large unstructured tetrahedral meshes containing millions of elements. The out-of-core algorithm uses an octree to partition and restructure the raw data into subsets stored into disk files for fast data retrieval. A memory management policy tailored to the streamline calculations is used such that during the streamline construction only a very small amount of data are brought into the main memory on demand. By carefully scheduling computation and data fetching, the overhead of reading data from the disk is significantly reduced and good memory performance results. This out-of-core algorithm makes possible interactive streamline visualization of large unstructured-grid data sets on a single mid-range workstation with relatively low main-memory capacity: 5-20 megabytes. Our test results also show that this approach is much more efficient than relying on virtual memory and operating system's paging algorithms.

  1. STREAMLINES IN STRATIFIED FLOW OVER A THREE-DIMENSIONAL HILL

    EPA Science Inventory

    A fluid modeling study was performed in the EPA Fluid Modeling Facility's stratified towing tank to determine the effects of stratification on the flow field over a three-dimensional hill. Streamlines in the stratified flow over an axisymmetric hill were marked with a dye tracer ...

  2. 76 FR 24339 - Streamlining Service Delivery and Improving Customer Service

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-02

    ... Delivery and Improving Customer Service By the authority vested in me as President by the Constitution and...). However, with advances in technology and service delivery systems in other sectors, the public's... Federal Government has a responsibility to streamline and make more efficient its service delivery...

  3. Joint statistics and conditional mean strain rates of streamline segments

    NASA Astrophysics Data System (ADS)

    Schaefer, P.; Gampert, M.; Peters, N.

    2013-07-01

    Based on four different direct numerical simulations of turbulent flows with Taylor-based Reynolds numbers ranging from Reλ = 50 to 300 among which are two homogeneous isotropic decaying, one forced and one homogeneous shear flow, streamlines are identified and the obtained space curves are parameterized with the pseudo-time as well as the arclength. Based on local extrema of the absolute value of the velocity along the streamlines, the latter are partitioned into segments following Wang (2010 J. Fluid Mech. 648 183-203). Streamline segments are then statistically analyzed based on both parameterizations using the joint probability density function of the pseudo-time lag τ (arclength l, respectively) between and the velocity difference Δu at the extrema: P(τ,Δu), (P(l,Δu)). We distinguish positive and negative streamline segments depending on the sign of the velocity difference Δu. Differences as well as similarities in the statistical description for both parameterizations are discussed. In particular, it turns out that the normalized probability distribution functions (pdfs) (of both parameterizations) of the length of positive, negative and all segments assume a universal shape for all Reynolds numbers and flow types and are well described by a model derived in Schaefer P et al (2012 Phys. Fluids 24 045104). Particular attention is given to the conditional mean velocity difference at the ending points of the segments, which can be understood as a first-order structure function in the context of streamline segment analysis. It determines to a large extent the stretching (compression) of positive (negative) streamline segments and corresponds to the convective velocity in phase space in the transport model equation for the pdf. While based on the random sweeping hypothesis a scaling \\langle |\\Delta u\\Vert\\tau \\rangle \\propto \\left (u_{ { rms}} \\varepsilon \\tau \\right )^{1/3} is found for the parameterization based on the pseudo-time, the

  4. Implementation science in the real world: a streamlined model.

    PubMed

    Knapp, Herschel; Anaya, Henry D

    2012-01-01

    The process of quality improvement may involve enhancing or revising existing practices or the introduction of a novel element. Principles of Implementation Science provide key theories to guide these processes, however, such theories tend to be highly technical in nature and do not provide pragmatic nor streamlined approaches to real-world implementation. This paper presents a concisely comprehensive six step theory-based Implementation Science model that we have successfully used to launch more than two-dozen self-sustaining implementations. In addition, we provide an abbreviated case study in which we used our streamlined theoretical model to successfully guide the development and implementation of an HIV testing/linkage to care campaign in homeless shelter settings in Los Angeles County. PMID:23163970

  5. A streamlined ribosome profiling protocol for the characterization of microorganisms.

    PubMed

    Latif, Haythem; Szubin, Richard; Tan, Justin; Brunk, Elizabeth; Lechner, Anna; Zengler, Karsten; Palsson, Bernhard O

    2015-06-01

    Ribosome profiling is a powerful tool for characterizing in vivo protein translation at the genome scale, with multiple applications ranging from detailed molecular mechanisms to systems-level predictive modeling. Though highly effective, this intricate technique has yet to become widely used in the microbial research community. Here we present a streamlined ribosome profiling protocol with reduced barriers to entry for microbial characterization studies. Our approach provides simplified alternatives during harvest, lysis, and recovery of monosomes and also eliminates several time-consuming steps, in particular size-selection steps during library construction. Furthermore, the abundance of rRNAs and tRNAs in the final library is drastically reduced. Our streamlined workflow enables greater throughput, cuts the time from harvest to the final library in half (down to 3-4 days), and generates a high fraction of informative reads, all while retaining the high quality standards of the existing protocol. PMID:26054770

  6. Streamlining: Reducing costs and increasing STS operations effectiveness

    NASA Technical Reports Server (NTRS)

    Petersburg, R. K.

    1985-01-01

    The development of streamlining as a concept, its inclusion in the space transportation system engineering and operations support (STSEOS) contract, and how it serves as an incentive to management and technical support personnel is discussed. The mechanics of encouraging and processing streamlining suggestions, reviews, feedback to submitters, recognition, and how individual employee performance evaluations are used to motivation are discussed. Several items that were implemented are mentioned. Information reported and the methodology of determining estimated dollar savings are outlined. The overall effect of this activity on the ability of the McDonnell Douglas flight preparation and mission operations team to support a rapidly increasing flight rate without a proportional increase in cost is illustrated.

  7. Streamline topologies and their bifurcations for mixed convective peristaltic flow

    NASA Astrophysics Data System (ADS)

    Asghar, Z.; Ali, N.

    2015-09-01

    In this work our focus is on streamlines patterns and their bifurcations for mixed convective peristaltic flow of Newtonian fluid with heat transfer. The flow is considered in a two dimensional symmetric channel and the governing equations are simplified under widely taken assumptions of large wavelength and low Reynolds number in a wave frame of reference. In order to study the streamlines patterns, a system of nonlinear autonomous differential equations are established and dynamical systems approach is used to discuss the local bifurcations and their topological changes. We have discussed all types of bifurcations and their topological changes are presented graphically. We found that the vortices contract along the vertical direction whereas they expand along horizontal direction. A global bifurcations diagram is used to summarize the bifurcations. The trapping and backward flow regions are mainly affected by increasing Grashof number and constant heat source parameter in such a way that trapping region increases whereas backward flow region shrinks.

  8. Zephyr: an internet-based process to streamline engineering

    SciTech Connect

    Alford, F A; Cavitt, R E; Jordan, C W; Mauvais, M J; Niven, W A; Taylor, J M; Taylor, S S; Vickers, D L; Warren, F E; Weaver, R L

    1998-07-01

    Lawrence Livermore National Laboratory (LLNL) is implementing an Internet-based process pilot called 'Zephyr' to streamline engineering and commerce using the internet. Major benefits have accrued by using Zephyr in facilitating industrial collaboration, speeding the engineering development cycle, reducing procurement time, and lowering overall costs. Programs at LLNL are potentializing the efficiencies introduced since implementing Zephyr. Zephyr"s pilot functionality is undergoing full integration with Business Systems, Finance, and Vendors to support major programs at the Laboratory.

  9. Zephyr: A secure Internet process to streamline engineering

    SciTech Connect

    Jordan, C.W.; Niven, W.A.; Cavitt, R.E.

    1998-05-12

    Lawrence Livermore National Laboratory (LLNL) is implementing an Internet-based process pilot called `Zephyr` to streamline engineering and commerce using the Internet. Major benefits have accrued by using Zephyr in facilitating industrial collaboration, speeding the engineering development cycle, reducing procurement time, and lowering overall costs. Programs at LLNL are potentializing the efficiencies introduced since implementing Zephyr. Zephyr`s pilot functionality is undergoing full integration with Business Systems, Finance, and Vendors to support major programs at the Laboratory.

  10. The self streamlining wind tunnel. [wind tunnel walls

    NASA Technical Reports Server (NTRS)

    Goodyer, M. J.

    1975-01-01

    A two dimensional test section in a low speed wind tunnel capable of producing flow conditions free from wall interference is presented. Flexible top and bottom walls, and rigid sidewalls from which models were mounted spanning the tunnel are shown. All walls were unperforated, and the flexible walls were positioned by screw jacks. To eliminate wall interference, the wind tunnel itself supplied the information required in the streamlining process, when run with the model present. Measurements taken at the flexible walls were used by the tunnels computer check wall contours. Suitable adjustments based on streamlining criteria were then suggested by the computer. The streamlining criterion adopted when generating infinite flowfield conditions was a matching of static pressures in the test section at a wall with pressures computed for an imaginary inviscid flowfield passing over the outside of the same wall. Aerodynamic data taken on a cylindrical model operating under high blockage conditions are presented to illustrate the operation of the tunnel in its various modes.

  11. Bathymetry, electromagnetic streamlines and the marine controlled source electromagnetic method

    NASA Astrophysics Data System (ADS)

    Pethick, Andrew 12Harris, Brett

    2014-07-01

    Seafloor topography must influence the strength and direction of electromagnetic fields generated during deep ocean controlled source electromagnetic surveying. Neither mathematical equation nor rules of thumb provide a clear perspective of how changes in water column thickness alters electromagnetic fields that engulf hundreds of cubic kilometres of air, ocean, host and reservoir. We use streamline visualisation to provide a generalised representation of how electromagnetic fields propagate into a 2D geo-electrical setting that includes strong bathymetry. Of particular interest are: (i)' dead zones' where electric fields at the ocean floor are demonstrated to be weak and (ii) the 'airwave' that appears in the electric field streamlines as circulating vortices with a shape that is clearly influenced by changes in ocean depth. Our analysis of the distribution of electric fields for deep and shallow water examples alludes to potential benefits from placement of receivers and/or transmitters higher in the water column as is the case for towed receiver geometries. Real-time streamline representation probably holds the most value at the survey planning stage, especially for shallow water marine EM surveys where ocean bottom topography is likely to be consequential.

  12. 48 CFR 25.504-1 - Buy American Act.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 1 2013-10-01 2013-10-01 false Buy American Act. 25.504-1... PROGRAMS FOREIGN ACQUISITION Evaluating Foreign Offers-Supply Contracts 25.504-1 Buy American Act. (a)(1... Buy American Act applies. Since the acquisition value is less than $25,000 and the acquisition is...

  13. 48 CFR 25.504-1 - Buy American Act.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 1 2011-10-01 2011-10-01 false Buy American Act. 25.504-1... PROGRAMS FOREIGN ACQUISITION Evaluating Foreign Offers-Supply Contracts 25.504-1 Buy American Act. (a)(1... Buy American Act applies. Since the acquisition value is less than $25,000 and the acquisition is...

  14. 48 CFR 25.504-1 - Buy American Act.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 1 2012-10-01 2012-10-01 false Buy American Act. 25.504-1... PROGRAMS FOREIGN ACQUISITION Evaluating Foreign Offers-Supply Contracts 25.504-1 Buy American Act. (a)(1... Buy American Act applies. Since the acquisition value is less than $25,000 and the acquisition is...

  15. 48 CFR 25.504-1 - Buy American Act.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false Buy American Act. 25.504-1... PROGRAMS FOREIGN ACQUISITION Evaluating Foreign Offers-Supply Contracts 25.504-1 Buy American Act. (a)(1... Buy American Act applies. Since the acquisition value is less than $25,000 and the acquisition is...

  16. 48 CFR 25.406 - Israeli Trade Act.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 1 2013-10-01 2013-10-01 false Israeli Trade Act. 25.406... PROGRAMS FOREIGN ACQUISITION Trade Agreements 25.406 Israeli Trade Act. Acquisitions of supplies by most agencies are covered by the Israeli Trade Act, if the estimated value of the acquisition is $50,000 or...

  17. 48 CFR 25.406 - Israeli Trade Act.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 1 2014-10-01 2014-10-01 false Israeli Trade Act. 25.406... PROGRAMS FOREIGN ACQUISITION Trade Agreements 25.406 Israeli Trade Act. Acquisitions of supplies by most agencies are covered by the Israeli Trade Act, if the estimated value of the acquisition is $50,000 or...

  18. 48 CFR 25.406 - Israeli Trade Act.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 1 2011-10-01 2011-10-01 false Israeli Trade Act. 25.406... PROGRAMS FOREIGN ACQUISITION Trade Agreements 25.406 Israeli Trade Act. Acquisitions of supplies by most agencies are covered by the Israeli Trade Act, if the estimated value of the acquisition is $50,000 or...

  19. 48 CFR 25.406 - Israeli Trade Act.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 1 2012-10-01 2012-10-01 false Israeli Trade Act. 25.406... PROGRAMS FOREIGN ACQUISITION Trade Agreements 25.406 Israeli Trade Act. Acquisitions of supplies by most agencies are covered by the Israeli Trade Act, if the estimated value of the acquisition is $50,000 or...

  20. 48 CFR 25.406 - Israeli Trade Act.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false Israeli Trade Act. 25.406... PROGRAMS FOREIGN ACQUISITION Trade Agreements 25.406 Israeli Trade Act. Acquisitions of supplies by most agencies are covered by the Israeli Trade Act, if the estimated value of the acquisition is $50,000 or...

  1. Streamline correction for the analysis of boundary layer turbulence

    NASA Astrophysics Data System (ADS)

    Lee, Zoë S.; Baas, Andreas C. W.

    2012-10-01

    Improvements in the design and affordability of ultrasonic anemometers have provided significant contributions to aeolian research, by facilitating high frequency monitoring of three dimensional wind velocities. From these data it is possible to calculate quasi-instantaneous Reynolds stresses to evaluate boundary layer turbulence, moving beyond time-averaged measures, such as shear velocity (U*). As ultrasonic anemometry is used more frequently in aeolian geomorphology it is important to question accepted conventions concerning data processing and analysis. This paper examines data processing questions associated with the application of ultrasonic anemometry to field studies in aeolian geomorphology, through an investigation of three streamline correction routines, the two-step, three-step and planar-fit methods, on data recorded on a gently sloping beach at Magilligan Strand, Northern Ireland in May 2010. The planar-fit technique has not previously been used in aeolian geomorphology. Results are compared with data that have been corrected only for wind direction (yaw). The effects that these different methods have on quadrant analysis and Reynolds stress calculation are discussed. Streamline correction is applied as a time-variable procedure using a characteristic timescale of 8 s following analysis of the resultant wind speed energy spectrum. It is found that Reynolds shear stress is dependent on streamline correction method, with run mean estimates of resultant horizontal shear stress ranging from 0.05 to 0.11 N m- 2 depending on the technique. The two-step method consistently maximises the shear stress and when the resultant horizontal shear is calculated, it produces the most robust estimate for application to aeolian research. In contrast, the different methods have little effect on the identification or sequencing of turbulent structures using quadrant analysis. Streamline correction is an essential processing step when using Reynolds decomposition, however

  2. Studies of self streamlining wind tunnel real and imaginary flows

    NASA Technical Reports Server (NTRS)

    Wolf, S. W. D.; Goodyer, M. J.

    1978-01-01

    Testing in the low speed flexible walled tunnel in an effort to explain the reasons for data discrepancies at high angles of attack are presented. Automated transonic test sections were developed. The flexible walled tunnel was used in a new operating mode to a generated curved flow around the airfoil, allowing the extraction of purely rotary derivatives. Some straight wall, low speed pressure data, for wall and model, which is used for checking interference correction methods were reported. Computer software which includes an old streamlining algorithm and a prediction algorithm was examined.

  3. Streamlined analysis of duplex sequencing data with Du Novo.

    PubMed

    Stoler, Nicholas; Arbeithuber, Barbara; Guiblet, Wilfried; Makova, Kateryna D; Nekrutenko, Anton

    2016-01-01

    Duplex sequencing was originally developed to detect rare nucleotide polymorphisms normally obscured by the noise of high-throughput sequencing. Here we describe a new, streamlined, reference-free approach for the analysis of duplex sequencing data. We show the approach performs well on simulated data and precisely reproduces previously published results and apply it to a newly produced dataset, enabling us to type low-frequency variants in human mitochondrial DNA. Finally, we provide all necessary tools as stand-alone components as well as integrate them into the Galaxy platform. All analyses performed in this manuscript can be repeated exactly as described at http://usegalaxy.org/duplex . PMID:27566673

  4. Homogeneous turbulence subjected to mean flow with elliptic streamlines

    NASA Technical Reports Server (NTRS)

    Blaisdell, G. A.; Shariff, K.

    1994-01-01

    Direct numerical simulations are performed for homogeneous turbulence with a mean flow having elliptic streamlines. This flow combines the effects of rotation and strain on the turbulence. Qualitative comparisons are made with linear theory for cases with high Rossby number. The nonlinear transfer process is monitored using a generalized skewness. In general, rotation turns off the nonlinear cascade; however, for moderate ellipticities and rotation rates the nonlinear cascade is turned off and then reestablished. Turbulence statistics of interest in turbulence modeling are calculated, including full Reynolds stress budgets.

  5. User's guide and description of the streamline divergence computer program. [turbulent convective heat transfer

    NASA Technical Reports Server (NTRS)

    Sulyma, P. R.; Mcanally, J. V.

    1975-01-01

    The streamline divergence program was developed to demonstrate the capability to trace inviscid surface streamlines and to calculate outflow-corrected laminar and turbulent convective heating rates on surfaces subjected to exhaust plume impingement. The analytical techniques used in formulating this program are discussed. A brief description of the streamline divergence program is given along with a user's guide. The program input and output for a sample case are also presented.

  6. Eco-friendly streamlined process for sporopollenin exine capsule extraction.

    PubMed

    Mundargi, Raghavendra C; Potroz, Michael G; Park, Jae Hyeon; Seo, Jeongeun; Tan, Ee-Lin; Lee, Jae Ho; Cho, Nam-Joon

    2016-01-01

    Sporopollenin exine capsules (SECs) extracted from Lycopodium clavatum spores are an attractive biomaterial possessing a highly robust structure suitable for microencapsulation strategies. Despite several decades of research into SEC extraction methods, the protocols commonly used for L. clavatum still entail processing with both alkaline and acidolysis steps at temperatures up to 180 °C and lasting up to 7 days. Herein, we demonstrate a significantly streamlined processing regimen, which indicates that much lower temperatures and processing durations can be used without alkaline lysis. By employing CHN elemental analysis, scanning electron microscopy (SEM), confocal laser scanning microscopy (CLSM), and dynamic image particle analysis (DIPA), the optimum conditions for L. clavatum SEC processing were determined to include 30 hours acidolysis at 70 °C without alkaline lysis. Extending these findings to proof-of-concept encapsulation studies, we further demonstrate that our SECs are able to achieve a loading of 0.170 ± 0.01 g BSA per 1 g SECs by vacuum-assisted loading. Taken together, our streamlined processing method and corresponding characterization of SECs provides important insights for the development of applications including drug delivery, cosmetics, personal care products, and foods. PMID:26818918

  7. Eco-friendly streamlined process for sporopollenin exine capsule extraction

    PubMed Central

    Mundargi, Raghavendra C.; Potroz, Michael G.; Park, Jae Hyeon; Seo, Jeongeun; Tan, Ee-Lin; Lee, Jae Ho; Cho, Nam-Joon

    2016-01-01

    Sporopollenin exine capsules (SECs) extracted from Lycopodium clavatum spores are an attractive biomaterial possessing a highly robust structure suitable for microencapsulation strategies. Despite several decades of research into SEC extraction methods, the protocols commonly used for L. clavatum still entail processing with both alkaline and acidolysis steps at temperatures up to 180 °C and lasting up to 7 days. Herein, we demonstrate a significantly streamlined processing regimen, which indicates that much lower temperatures and processing durations can be used without alkaline lysis. By employing CHN elemental analysis, scanning electron microscopy (SEM), confocal laser scanning microscopy (CLSM), and dynamic image particle analysis (DIPA), the optimum conditions for L. clavatum SEC processing were determined to include 30 hours acidolysis at 70 °C without alkaline lysis. Extending these findings to proof-of-concept encapsulation studies, we further demonstrate that our SECs are able to achieve a loading of 0.170 ± 0.01 g BSA per 1 g SECs by vacuum-assisted loading. Taken together, our streamlined processing method and corresponding characterization of SECs provides important insights for the development of applications including drug delivery, cosmetics, personal care products, and foods. PMID:26818918

  8. Analysis of Jupiter's Oval BA: A Streamlined Approach

    NASA Technical Reports Server (NTRS)

    Sussman, Michael G.; Chanover, Nancy J.; Simon-Miller, Amy A.; Vasavada, Ashwin R.; Beebe, Reta F.

    2010-01-01

    We present a novel method of constructing streamlines to derive wind speeds within jovian vortices and demonstrate its application to Oval BA for 2001 pre-reddened Cassini flyby data, 2007 post-reddened New Horizons flyby data, and 1998 Galileo data of precursor Oval DE. Our method, while automated, attempts to combine the advantages of both automated and manual cloud tracking methods. The southern maximum wind speed of Oval BA does not show significant changes between these data sets to within our measurement uncertainty. The northern maximum dries appear to have increased in strength during this time interval, tvhich likely correlates with the oval's return to a symmetric shape. We demonstrate how the use of closed streamlines can provide measurements of vorticity averaged over the encircled area with no a priori assumptions concerning oval shape. We find increased averaged interior vorticity between pre- and post-reddened Oval BA, with the precursor Oval DE occupying a middle value of vorticity between these two.

  9. Eco-friendly streamlined process for sporopollenin exine capsule extraction

    NASA Astrophysics Data System (ADS)

    Mundargi, Raghavendra C.; Potroz, Michael G.; Park, Jae Hyeon; Seo, Jeongeun; Tan, Ee-Lin; Lee, Jae Ho; Cho, Nam-Joon

    2016-01-01

    Sporopollenin exine capsules (SECs) extracted from Lycopodium clavatum spores are an attractive biomaterial possessing a highly robust structure suitable for microencapsulation strategies. Despite several decades of research into SEC extraction methods, the protocols commonly used for L. clavatum still entail processing with both alkaline and acidolysis steps at temperatures up to 180 °C and lasting up to 7 days. Herein, we demonstrate a significantly streamlined processing regimen, which indicates that much lower temperatures and processing durations can be used without alkaline lysis. By employing CHN elemental analysis, scanning electron microscopy (SEM), confocal laser scanning microscopy (CLSM), and dynamic image particle analysis (DIPA), the optimum conditions for L. clavatum SEC processing were determined to include 30 hours acidolysis at 70 °C without alkaline lysis. Extending these findings to proof-of-concept encapsulation studies, we further demonstrate that our SECs are able to achieve a loading of 0.170 ± 0.01 g BSA per 1 g SECs by vacuum-assisted loading. Taken together, our streamlined processing method and corresponding characterization of SECs provides important insights for the development of applications including drug delivery, cosmetics, personal care products, and foods.

  10. SafetyNet: Streamlining and Automating QA in radiotherapy.

    PubMed

    Hadley, Scott W; Kessler, Marc L; Litzenberg, Dale W; Lee, Choonik; Irrer, Jim; Chen, Xiaoping; Acosta, Eduardo; Weyburne, Grant; Keranen, Wayne; Lam, Kwok; Covington, Elizabeth; Younge, Kelly C; Matuszak, Martha M; Moran, Jean M

    2016-01-01

    Proper quality assurance (QA) of the radiotherapy process can be time-consuming and expensive. Many QA efforts, such as data export and import, are inefficient when done by humans. Additionally, humans can be unreliable, lose attention, and fail to complete critical steps that are required for smooth operations. In our group we have sought to break down the QA tasks into separate steps and to automate those steps that are better done by software running autonomously or at the instigation of a human. A team of medical physicists and software engineers worked together to identify opportunities to streamline and automate QA. Development efforts follow a formal cycle of writing software requirements, developing software, testing and commissioning. The clinical release process is separated into clinical evaluation testing, training, and finally clinical release. We have improved six processes related to QA and safety. Steps that were previously performed by humans have been automated or streamlined to increase first-time quality, reduce time spent by humans doing low-level tasks, and expedite QA tests. Much of the gains were had by automating data transfer, implementing computer-based checking and automation of systems with an event-driven framework. These coordinated efforts by software engineers and clinical physicists have resulted in speed improvements in expediting patient-sensitive QA tests. PMID:26894365

  11. Assessment of RANS to predict flows with large streamline curvature

    NASA Astrophysics Data System (ADS)

    Yin, J. L.; Wang, D. Z.; Cheng, H.; Gu, W. G.

    2013-12-01

    In order to provide a guideline for choosing turbulence models in computation of complex flows with large streamline curvature, this paper presents a comprehensive comparison investigation of different RANS models widely used in engineering to check each model's sensibility on the streamline curvature. First, different models including standard k-ε, Realizable k-ε, Renormalization-group (RNG) k-ε model, Shear-stress transport k-ω model and non-linear eddy-viscosity model v2-f model are tested to simulated the flow in a 2D U-bend which has the standard bench mark available. The comparisons in terms of non-dimensional velocity and turbulent kinetic energy show that large differences exist among the results calculated by various models. To further validate the capability to predict flows with secondary flows, the involved models are tested in a 3D 90° bend flow. Also, the velocities are compared. As a summary, the advantages and disadvantages of each model are analysed and guidelines for choice of turbulence model are presented.

  12. Stratified Flow Past a Hill: Dividing Streamline Concept Revisited

    NASA Astrophysics Data System (ADS)

    Leo, Laura S.; Thompson, Michael Y.; Di Sabatino, Silvana; Fernando, Harindra J. S.

    2016-06-01

    The Sheppard formula (Q J R Meteorol Soc 82:528-529, 1956) for the dividing streamline height H_s assumes a uniform velocity U_∞ and a constant buoyancy frequency N for the approach flow towards a mountain of height h, and takes the form H_s/h=( {1-F} ) , where F=U_{∞}/Nh. We extend this solution to a logarithmic approach-velocity profile with constant N. An analytical solution is obtained for H_s/h in terms of Lambert-W functions, which also suggests alternative scaling for H_s/h. A `modified' logarithmic velocity profile is proposed for stably stratified atmospheric boundary-layer flows. A field experiment designed to observe H_s is described, which utilized instrumentation from the spring field campaign of the Mountain Terrain Atmospheric Modeling and Observations (MATERHORN) Program. Multiple releases of smoke at F≈ 0.3-0.4 support the new formulation, notwithstanding the limited success of experiments due to logistical constraints. No dividing streamline is discerned for F≈ 10, since, if present, it is too close to the foothill. Flow separation and vortex shedding is observed in this case. The proposed modified logarithmic profile is in reasonable agreement with experimental observations.

  13. 77 FR 36289 - Implementation of Indian Reservation Roads Program and Streamlining the Federal Delivery of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-18

    ... Delivery of Tribal Transportation Services AGENCY: Bureau of Indian Affairs, Interior. ACTION: Notice of... (IRR) funding among tribes; (2) streamlining BIA delivery of transportation program services to...

  14. Industrial Compositional Streamline Simulation for Efficient and Accurate Prediction of Gas Injection and WAG Processes

    SciTech Connect

    Margot Gerritsen

    2008-10-31

    Gas-injection processes are widely and increasingly used for enhanced oil recovery (EOR). In the United States, for example, EOR production by gas injection accounts for approximately 45% of total EOR production and has tripled since 1986. The understanding of the multiphase, multicomponent flow taking place in any displacement process is essential for successful design of gas-injection projects. Due to complex reservoir geometry, reservoir fluid properties and phase behavior, the design of accurate and efficient numerical simulations for the multiphase, multicomponent flow governing these processes is nontrivial. In this work, we developed, implemented and tested a streamline based solver for gas injection processes that is computationally very attractive: as compared to traditional Eulerian solvers in use by industry it computes solutions with a computational speed orders of magnitude higher and a comparable accuracy provided that cross-flow effects do not dominate. We contributed to the development of compositional streamline solvers in three significant ways: improvement of the overall framework allowing improved streamline coverage and partial streamline tracing, amongst others; parallelization of the streamline code, which significantly improves wall clock time; and development of new compositional solvers that can be implemented along streamlines as well as in existing Eulerian codes used by industry. We designed several novel ideas in the streamline framework. First, we developed an adaptive streamline coverage algorithm. Adding streamlines locally can reduce computational costs by concentrating computational efforts where needed, and reduce mapping errors. Adapting streamline coverage effectively controls mass balance errors that mostly result from the mapping from streamlines to pressure grid. We also introduced the concept of partial streamlines: streamlines that do not necessarily start and/or end at wells. This allows more efficient coverage and avoids

  15. Harmonization and streamlining of research oversight for pragmatic clinical trials.

    PubMed

    O'Rourke, P Pearl; Carrithers, Judith; Patrick-Lake, Bray; Rice, Todd W; Corsmo, Jeremy; Hart, Raffaella; Drezner, Marc K; Lantos, John D

    2015-10-01

    The oversight of research involving human participants is a complex process that requires institutional review board review as well as multiple non-institutional review board institutional reviews. This multifaceted process is particularly challenging for multisite research when each site independently completes all required local reviews. The lack of inter-institutional standardization can result in different review outcomes for the same protocol, which can delay study operations from start-up to study completion. Hence, there have been strong calls to harmonize and thus streamline the research oversight process. Although the institutional review board is only one of the required reviews, it is often identified as the target for harmonization and streamlining. Data regarding variability in decision-making and interpretation of the regulations across institutional review boards have led to a perception that variability among institutional review boards is a primary contributor to the problems with review of multisite research. In response, many researchers and policymakers have proposed the use of a single institutional review board of record, also called a central institutional review board, as an important remedy. While this proposal has merit, the use of a central institutional review board for multisite research does not address the larger problem of completing non-institutional review board institutional review in addition to institutional review board review—and coordinating the interdependence of these reviews. In this article, we describe the overall research oversight process, distinguish between institutional review board and institutional responsibilities, and identify challenges and opportunities for harmonization and streamlining. We focus on procedural and organizational issues and presume that the protection of human subjects remains the paramount concern. Suggested modifications of institutional review board processes that focus on time

  16. Numerical computation of space shuttle heating and surface streamlines

    NASA Technical Reports Server (NTRS)

    Rakich, J. V.; Lanfranco, M. J.

    1976-01-01

    Exact inviscid flow-field codes are used together with a quasi-three-dimensional boundary-layer analysis to provide estimates of the windward surface heating and streamline patterns of the shuttle orbiter vehicle. The accuracy and limitations of the methods are established by comparison with available wind-tunnel experiments and with more exact numerical solutions for simple flows. Flight predictions are presented showing the effects of finite-rate (nonequilibrium) chemical reactions, and the effects of varying boundary-layer edge conditions due to the growth of the boundary-layer into the inviscid flow (entropy layer swallowing). Differences between flow-field predictions at wind-tunnel and nominal flight conditions are discussed.

  17. Streamlined bilateral otologic surgery: how I do it.

    PubMed

    Brennan, Tara E; Redleaf, Miriam I

    2015-03-01

    Bilateral simultaneous otologic surgery is being performed more commonly among otologists. The benefits of performing bilateral simultaneous cochlear implants in the pediatric population, in particular, have become increasingly recognized as the safety and efficacy of this operation have been recognized in the literature. Here we present a streamlined method of performing bilateral simultaneous otologic surgery that emphasizes midline placement of facial nerve electrodes and a method of sterile preparation and draping that affords direct exposure to both ears at one time, without the need to turn the head or adjust the drapes multiple times throughout the operation. Our approach facilitates frequent and efficient alternation between ears throughout the operation, optimizing efficiency of motion and instrumentation for the surgeon, and reducing overall operative and general anesthesia time for the patient. PMID:25738727

  18. Lateral straining of turbulent boundary layers. I - Streamline divergence

    NASA Technical Reports Server (NTRS)

    Saddoughi, Seyed G.; Joubert, Peter N.

    1991-01-01

    The effect of prolonged streamline divergence on developing turbulent boundary layers is investigated using an experimental approximation of the source flow over a flat plate to achieve a simple divergence. Results are presented of hot-wire measurements for the planes of symmetry of two layers which had the same (low) Reynolds number and were developed in the presence of the same amount of simple divergence with a maximum divergence parameter of about 0.075 but with different (by a factor of 2) pressure-gradient parameters. It was found that there were two overlapping stages of development. In the initial stage, which covered a distance of about 20 initial boundary-layer thicknesses from the start of divergence, the coupled effects of both the pressure gradient and divergence were present. In the second region, which lasts nearly to the end of the diverging section, the pressure-gradient effects were negligible.

  19. Mean streamline aerodynamic performance analysis of centrifugal compressors

    SciTech Connect

    Aungier, R.H.

    1995-07-01

    Aerodynamic performance prediction models for centrifugal compressor impellers are presented. In combination with similar procedures for stationary components, previously published in the open literature, a comprehensive mean streamline performance analysis for centrifugal compressor stages is provided. The accuracy and versatility of the overall analysis is demonstrated for several centrifugal compressor stages of various types, including comparison with intrastage component performance data. Detailed validation of the analysis against experimental data has been accomplished for over a hundred stages, including stage flow coefficients from 0.009 to 0.15 and pressure ratios up to about 3.5. Its application to turbocharger stages includes pressure ratios up to 4.2, but with test uncertainty much greater than for the data used in the detailed validation studies.

  20. RBR ubiquitin ligases: Diversification and streamlining in animal lineages.

    PubMed

    Marín, Ignacio

    2009-07-01

    The patterns of emergence and disappearance in animal species of genes encoding RBR ubiquitin ligases are described. RBR genes can be classified into subfamilies (Parkin, Ariadne, Dorfin, ARA54, etc.) according to sequence and structural data. Here, I show that most animal-specific RBR subfamilies emerged early in animal evolution, and that ancient animals, before the cnidarian/bilaterian split, had a set of RBR genes, which was as complex as the one currently found in mammals. However, some lineages (nematodes, dipteran insects) have recently suffered multiple losses, leading to a highly simplified set of RBR genes. Genes of a particular RBR subfamily, characterized by containing a helicase domain and so far found only in plants, are present also in some animal species. The meaning of these patterns of diversification and streamlining are discussed at the light of functional data. Extreme evolutionary conservation may be related to gene products having housekeeping functions. PMID:19526189

  1. A Streamlined Strategy for Biohydrogen Production with an Alkaliphilic Bacterium

    SciTech Connect

    Elias, Dwayne A; Wall, Judy D.; Mormile, Dr. Melanie R.; Begemann, Matthew B

    2012-01-01

    Biofuels are anticipated to enable a shift from fossil fuels for renewable transportation and manufacturing fuels, with biohydrogen considered attractive since it could offer the largest reduction of global carbon budgets. Currently, biohydrogen production remains inefficient and heavily fossil fuel-dependent. However, bacteria using alkali-treated biomass could streamline biofuel production while reducing costs and fossil fuel needs. An alkaliphilic bacterium, Halanaerobium strain sapolanicus, is described that is capable of biohydrogen production at levels rivaling neutrophilic strains, but at pH 11 and hypersaline conditions. H. sapolanicus ferments a variety of 5- and 6- carbon sugars derived from hemicellulose and cellulose including cellobiose, and forms the end products hydrogen and acetate. Further, it can also produce biohydrogen from switchgrass and straw pretreated at temperatures far lower than any previously reported and in solutions compatible with growth. Hence, this bacterium can potentially increase the efficiency and efficacy of biohydrogen production from renewable biomass resources.

  2. Streamlining Software Aspects of Certification: Report on the SSAC Survey

    NASA Technical Reports Server (NTRS)

    Hayhurst, Kelly J.; Dorsey, Cheryl A.; Knight, John C.; Leveson, Nancy G.; McCormick, G. Frank

    1999-01-01

    The aviation system now depends on information technology more than ever before to ensure safety and efficiency. To address concerns about the efficacy of software aspects of the certification process, the Federal Aviation Administration (FAA) began the Streamlining Software Aspects of Certification (SSAC) program. The SSAC technical team was commissioned to gather data, analyze results, and propose recommendations to maximize efficiency and minimize cost and delay, without compromising safety. The technical team conducted two public workshops to identify and prioritize software approval issues, and conducted a survey to validate the most urgent of those issues. The SSAC survey, containing over two hundred questions about the FAA's software approval process, reached over four hundred industry software developers, aircraft manufacturers, and FAA designated engineering representatives. Three hundred people responded. This report presents the SSAC program rationale, survey process, preliminary findings, and recommendations.

  3. Streamlined HUB baffles for aeration at Norris Dam

    SciTech Connect

    Harshbarger, E.D.

    1984-07-01

    Streamlined hub baffles were installed and tested as aeration devices on both hydro turbines at Norris Dam. The results indicated that the baffles can induce significant aeration with only a small effect on unit operation. At the most efficient wicket gate opening, the airflow/waterflow ratio was about 2.2 to 3.2% which produced dissolved oxygen increases in the tailrace on the order of 2.5 to 3.0 mg/L when the incoming dissolved oxygen concentration was 1 mg/L or less. The baffles with aeration reduced unit efficiency less than 0.5% and reduced unit capacity less than 1 MW. For the final design, the baffles were bolted on and could be installed or removed in one eight-hour period or less.

  4. Classical free-streamline flow over a polygonal obstacle

    NASA Technical Reports Server (NTRS)

    Elcrat, A. R.; Trefethen, L. N.

    1984-01-01

    In classical Kirchhoff flow, an ideal incompressible fluid flows past an obstacle and around a motionless wake bounded by free streamlines. Since 1869 it has been known that in principle, the two-dimensional Kirchhoff flow over a polygonal obstacle can be determined by constructing a conformal map onto a polygon in the log-hodograph plane. In practice, however, this idea has rarely been put to use except for very simple obstacles, because the conformal mapping problem has been too difficult. This paper presents a practical method for computing flows over arbitrary polygonal obstacles to high accuracy in a few seconds of computer time. We achieve this high speed and flexibility by working with a modified Schwarz-Christoffel integral that maps onto the flow region directly rather than onto the log-hodograph polygon. This integral and its associated parameter problem are treated numerically by methods developed earlier by Trefethen for standard Schwarz-Christoffel maps.

  5. Streamlined Genome Sequence Compression using Distributed Source Coding

    PubMed Central

    Wang, Shuang; Jiang, Xiaoqian; Chen, Feng; Cui, Lijuan; Cheng, Samuel

    2014-01-01

    We aim at developing a streamlined genome sequence compression algorithm to support alternative miniaturized sequencing devices, which have limited communication, storage, and computation power. Existing techniques that require heavy client (encoder side) cannot be applied. To tackle this challenge, we carefully examined distributed source coding theory and developed a customized reference-based genome compression protocol to meet the low-complexity need at the client side. Based on the variation between source and reference, our protocol will pick adaptively either syndrome coding or hash coding to compress subsequences of changing code length. Our experimental results showed promising performance of the proposed method when compared with the state-of-the-art algorithm (GRS). PMID:25520552

  6. 76 FR 54792 - Comment Request for Information Collection for the Workforce Investment Act Streamlined...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-02

    ... proposed EMILE reporting system was published in the Federal Register on July 16, 2004 (69 FR 42777). The... and job seeker customers, including a special aggregate report on services to the nation's...

  7. Lateral straining of turbulent boundary layers. Part 2. Streamline convergence

    NASA Astrophysics Data System (ADS)

    Panchapakesan, N. R.; Nickels, T. B.; Joubert, P. N.; Smits, A. J.

    1997-10-01

    Experimental measurements are presented showing the effects of streamline convergence on developing turbulent boundary layers. The longitudinal pressure-gradient in these experiments is nominally zero so the only extra rate-of-strain is the lateral convergence. Measurements have been made of mean flow and turbulence quantities at two different Reynolds numbers. The results show that convergence leads to a significant reduction in the skin-friction and an increase in the boundary layer thickness. There are also large changes in the Reynolds stresses with reductions occurring in the inner region and some increase in the outer flow. This is in contrast to the results of Saddoughi & Joubert (1991) for a diverging flow of the same included angle and zero pressure-gradient which show much smaller changes in the stresses and an approach to equilibrium. A new non-dimensional parameter, [beta]D, is proposed to characterize the local effect of the convergence and it is shown how this parameter is related to Clauser's pressure-gradient parameter, [beta]x. It is suggested that this is an equilibrium parameter for turbulent boundary layers with lateral straining. In the present flow case [beta]D increases rapidly with streamwise distance leading to a significant departure from equilibrium. Measurement of terms in the transport equations suggest that streamline convergence leads to a reduction in production and generation and large increases in mean advection. The recovery of the flow after the removal of convergence has been shown to be characterized by a significant increase in the turbulent transport of shear-stress and turbulent kinetic energy from the very near-wall region to the flow further out where the stresses have been depleted by convergence.

  8. The Cassini Solstice Mission: Streamlining Operations by Sequencing with PIEs

    NASA Technical Reports Server (NTRS)

    Vandermey, Nancy; Alonge, Eleanor K.; Magee, Kari; Heventhal, William

    2014-01-01

    The Cassini Solstice Mission (CSM) is the second extended mission phase of the highly successful Cassini/Huygens mission to Saturn. Conducted at a much-reduced funding level, operations for the CSM have been streamlined and simplified significantly. Integration of the science timeline, which involves allocating observation time in a balanced manner to each of the five different science disciplines (with representatives from the twelve different science instruments), has long been a labor-intensive endeavor. Lessons learned from the prime mission (2004-2008) and first extended mission (Equinox mission, 2008-2010) were utilized to design a new process involving PIEs (Pre-Integrated Events) to ensure the highest priority observations for each discipline could be accomplished despite reduced work force and overall simplification of processes. Discipline-level PIE lists were managed by the Science Planning team and graphically mapped to aid timeline deconfliction meetings prior to assigning discrete segments of time to the various disciplines. Periapse segments are generally discipline-focused, with the exception of a handful of PIEs. In addition to all PIEs being documented in a spreadsheet, allocated out-of-discipline PIEs were entered into the Cassini Information Management System (CIMS) well in advance of timeline integration. The disciplines were then free to work the rest of the timeline internally, without the need for frequent interaction, debate, and negotiation with representatives from other disciplines. As a result, the number of integration meetings has been cut back extensively, freeing up workforce. The sequence implementation process was streamlined as well, combining two previous processes (and teams) into one. The new Sequence Implementation Process (SIP) schedules 22 weeks to build each 10-week-long sequence, and only 3 sequence processes overlap. This differs significantly from prime mission during which 5-week-long sequences were built in 24 weeks

  9. Streamlined analysis of lactose-free dairy products.

    PubMed

    Morlock, Gertrud E; Morlock, Lauritz P; Lemo, Carot

    2014-01-10

    Functional food for lactose-intolerant consumers and its global prevalence has created a large market for commercially available lactose-free food products. The simplest approach for detection and quantitation of lactose in lactose-free dairy products was developed. A one-step sample preparation was employed and the resulting 10% sample solution was directly subjected to the chromatographic system. LODs down to 0.04 mg/L were obtained for dairy products by application volumes up to 250 μL on a rectangular start zone, which is the lowest LOD reported in matrix so far. The highly matrix-robust, streamlined approach was demonstrated for a broad range of dairy products, even with high fat and protein contents. The mean recovery rate for 11 types of dairy products spiked at the strictest lactose content discussed (0.01%) was 90.5±10.5% (n=11). The mean repeatability for 11 dairy products spiked at the 0.01% level was 1.3±1.0% (n=11). It is the simplest approach with regard to sample preparation at low running costs (0.3 Euro or 0.4 USD/analysis) and fast analysis time (3 min/analysis). It enabled an efficient product screening, and at the same time, the quantitation of lactose in relevant samples. This streamlined analysis is highly attractive to the field of food safety and quality control of lactose-free dairy products, for which a limit value for lactose is expected soon in the EU. This methodological concept can be transferred to other challenging fields. PMID:24360255

  10. Streamlined bioreactor-based production of human cartilage tissues.

    PubMed

    Tonnarelli, B; Santoro, R; Adelaide Asnaghi, M; Wendt, D

    2016-01-01

    Engineered tissue grafts have been manufactured using methods based predominantly on traditional labour-intensive manual benchtop techniques. These methods impart significant regulatory and economic challenges, hindering the successful translation of engineered tissue products to the clinic. Alternatively, bioreactor-based production systems have the potential to overcome such limitations. In this work, we present an innovative manufacturing approach to engineer cartilage tissue within a single bioreactor system, starting from freshly isolated human primary chondrocytes, through the generation of cartilaginous tissue grafts. The limited number of primary chondrocytes that can be isolated from a small clinically-sized cartilage biopsy could be seeded and extensively expanded directly within a 3D scaffold in our perfusion bioreactor (5.4 ± 0.9 doublings in 2 weeks), bypassing conventional 2D expansion in flasks. Chondrocytes expanded in 3D scaffolds better maintained a chondrogenic phenotype than chondrocytes expanded on plastic flasks (collagen type II mRNA, 18-fold; Sox-9, 11-fold). After this "3D expansion" phase, bioreactor culture conditions were changed to subsequently support chondrogenic differentiation for two weeks. Engineered tissues based on 3D-expanded chondrocytes were more cartilaginous than tissues generated from chondrocytes previously expanded in flasks. We then demonstrated that this streamlined bioreactor-based process could be adapted to effectively generate up-scaled cartilage grafts in a size with clinical relevance (50 mm diameter). Streamlined and robust tissue engineering processes, as the one described here, may be key for the future manufacturing of grafts for clinical applications, as they facilitate the establishment of compact and closed bioreactor-based production systems, with minimal automation requirements, lower operating costs, and increased compliance to regulatory guidelines. PMID:27232665

  11. 75 FR 29321 - Streamlined Procedure for Appeal Brief Review in Ex Parte Reexamination Proceedings

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-25

    ... Patent and Trademark Office Streamlined Procedure for Appeal Brief Review in Ex Parte Reexamination... States Patent and Trademark Office (USPTO) is streamlining the procedure for the review of appeal briefs... whether appeal briefs filed in ex parte reexamination proceeding appeals comply with the...

  12. Robust streamline tracing for the simulation of porous media flow on general triangular and quadrilateral grids

    NASA Astrophysics Data System (ADS)

    Matringe, Sébastien F.; Juanes, Ruben; Tchelepi, Hamdi A.

    2006-12-01

    Streamline methods for subsurface-flow simulation have received renewed attention as fast alternatives to traditional finite volume or finite element methods. Key aspects of streamline simulation are the accurate tracing of streamlines and the computation of travel time along individual streamlines. In this paper, we propose a new streamline tracing framework that enables the extension of streamline methods to unstructured grids composed of triangular or quadrilateral elements and populated with heterogeneous full-tensor coefficients. The proposed method is based on the mathematical framework of mixed finite element methods, which provides approximations of the velocity field that are especially suitable for streamline tracing. We identify and implement two classes of velocity spaces: the lowest-order Raviart-Thomas space (low-order tracing) and the Brezzi-Douglas-Marini space of order one (high-order tracing), both on triangles and quadrilaterals. We discuss the implementation of the streamline tracing method in detail, and we investigate the performance of the proposed tracing strategy by means of carefully designed test cases. We conclude that, for the same computational cost, high-order tracing is more accurate (smaller error in the time-of-flight) and robust (less sensitive to grid distortion) than low-order tracing.

  13. Self streamlining wind tunnel: Low speed testing and transonic test section design

    NASA Technical Reports Server (NTRS)

    Wolf, S. W. D.; Goodyer, M. J.

    1977-01-01

    Comprehensive aerodynamic data on an airfoil section were obtained through a wide range of angles of attack, both stalled and unstalled. Data were gathered using a self streamlining wind tunnel and were compared to results obtained on the same section in a conventional wind tunnel. The reduction of wall interference through streamline was demonstrated.

  14. 76 FR 22854 - Streamlined Patent Reexamination Proceedings; Notice of Public Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-25

    ..., 75 FR 47269 (Aug. 5, 2010). Phase I includes a number of streamlined procedures and optional programs... Review in Ex Parte Reexamination Proceedings, 75 FR 29321 (May 25, 2010); Streamlined Procedure for Appeal Brief Review in Inter Partes Reexamination Proceedings, 75 FR 50750 (Aug. 17, 2010). Moreover,...

  15. A Vocabulary Approach to Partial Streamline Matching and Exploratory Flow Visualization.

    PubMed

    Tao, Jun; Wang, Chaoli; Shene, Ching-Kuang; Shaw, Raymond A

    2016-05-01

    Measuring the similarity of integral curves is fundamental to many important flow data analysis and visualization tasks such as feature detection, pattern querying, streamline clustering, and hierarchical exploration. In this paper, we introduce FlowString, a novel vocabulary approach that extracts shape invariant features from streamlines and utilizes a string-based method for exploratory streamline analysis and visualization. Our solution first resamples streamlines by considering their local feature scales. We then classify resampled points along streamlines based on the shape similarity around their local neighborhoods. We encode each streamline into a string of well-selected shape characters, from which we construct meaningful words for querying and retrieval. A unique feature of our approach is that it captures intrinsic streamline similarity that is invariant under translation, rotation and scaling. We design an intuitive interface and user interactions to support flexible querying, allowing exact and approximate searches for partial streamline matching. Users can perform queries at either the character level or the word level, and define their own characters or words conveniently for customized search. We demonstrate the effectiveness of FlowString with several flow field data sets of different sizes and characteristics. We also extend FlowString to handle multiple data sets and perform an empirical expert evaluation to confirm the usefulness of this approach. PMID:27045908

  16. DHS Acquisition Accountability and Efficiency Act

    THOMAS, 113th Congress

    Rep. Duncan, Jeff [R-SC-3

    2014-03-13

    06/10/2014 Received in the Senate and Read twice and referred to the Committee on Homeland Security and Governmental Affairs. (All Actions) Tracker: This bill has the status Passed HouseHere are the steps for Status of Legislation:

  17. Acquisition Workforce Improvement Act of 2011

    THOMAS, 112th Congress

    Sen. Collins, Susan M. [R-ME

    2011-04-07

    04/07/2011 Read twice and referred to the Committee on Homeland Security and Governmental Affairs. (text of measure as introduced: CR S2271-2272) (All Actions) Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

  18. Coast Guard Acquisition Reform Act of 2009

    THOMAS, 111th Congress

    Rep. Cummings, Elijah E. [D-MD-7

    2009-03-23

    05/05/2010 Provisions of measure incorporated in to Title V of H.R. 3619. (All Actions) Notes: For further action, see H.R.3619, which became Public Law 111-281 on 10/15/2010. Tracker: This bill has the status Passed HouseHere are the steps for Status of Legislation:

  19. Acquisition Savings Reform Act of 2011

    THOMAS, 112th Congress

    Sen. Brown, Scott P. [R-MA

    2011-10-19

    10/19/2011 Read twice and referred to the Committee on Homeland Security and Governmental Affairs. (All Actions) Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

  20. Federal Acquisition Improvement Act of 2011

    THOMAS, 112th Congress

    Rep. Connolly, Gerald E. [D-VA-11

    2011-04-07

    04/08/2011 Referred to the Subcommittee on Technology, Information Policy, Intergovernmental Relations and Procurement Reform . (All Actions) Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

  1. Acquisition strategies

    SciTech Connect

    Zimmer, M.J.; Lynch, P.W. )

    1993-11-01

    Acquiring projects takes careful planning, research and consideration. Picking the right opportunities and avoiding the pitfalls will lead to a more valuable portfolio. This article describes the steps to take in evaluating an acquisition and what items need to be considered in an evaluation.

  2. Clustered streamlined forms in Athabasca Valles, Mars: Evidence for sediment deposition during floodwater ponding

    USGS Publications Warehouse

    Burr, D.

    2005-01-01

    A unique clustering of layered streamlined forms in Athabasca Valles is hypothesized to reflect a significant hydraulic event. The forms, interpreted as sedimentary, are attributed to extensive sediment deposition during ponding and then streamlining of this sediment behind flow obstacles during ponded water outflow. These streamlined forms are analogous to those found in depositional basins and other loci of ponding in terrestrial catastrophic flood landscapes. These terrestrial streamlined forms can provide the best opportunity for reconstructing the history of the terrestrial flooding. Likewise, the streamlined forms in Athabasca Valles may provide the best opportunity to reconstruct the recent geologic history of this young Martian outflow channel. ?? 2005 Elsevier B.V. All rights reserved.

  3. 75 FR 5716 - Federal Acquisition Regulation; FAR Case 2008-024, Inflation Adjustment of Acquisition-Related...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-04

    ... the Federal Register on September 28, 2006 (71 FR 57363). B. Analysis 1. What is an acquisition... Acquisition Regulation; FAR Case 2008-024, Inflation Adjustment of Acquisition-Related Thresholds AGENCIES... Act requires an adjustment every 5 years of acquisition- related thresholds for inflation using...

  4. 45 CFR 155.405 - Single streamlined application.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 155.405 Public Welfare DEPARTMENT OF HEALTH AND HUMAN SERVICES REQUIREMENTS RELATING TO HEALTH CARE ACCESS EXCHANGE ESTABLISHMENT STANDARDS AND OTHER RELATED STANDARDS UNDER THE AFFORDABLE CARE ACT... Disabilities Act....

  5. 45 CFR 155.405 - Single streamlined application.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 155.405 Public Welfare DEPARTMENT OF HEALTH AND HUMAN SERVICES REQUIREMENTS RELATING TO HEALTH CARE ACCESS EXCHANGE ESTABLISHMENT STANDARDS AND OTHER RELATED STANDARDS UNDER THE AFFORDABLE CARE ACT... Disabilities Act....

  6. 45 CFR 155.405 - Single streamlined application.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 155.405 Public Welfare Department of Health and Human Services REQUIREMENTS RELATING TO HEALTH CARE ACCESS EXCHANGE ESTABLISHMENT STANDARDS AND OTHER RELATED STANDARDS UNDER THE AFFORDABLE CARE ACT... Disabilities Act....

  7. Streamlined islands and the English Channel megaflood hypothesis

    NASA Astrophysics Data System (ADS)

    Collier, J. S.; Oggioni, F.; Gupta, S.; García-Moreno, D.; Trentesaux, A.; De Batist, M.

    2015-12-01

    Recognising ice-age catastrophic megafloods is important because they had significant impact on large-scale drainage evolution and patterns of water and sediment movement to the oceans, and likely induced very rapid, short-term effects on climate. It has been previously proposed that a drainage system on the floor of the English Channel was initiated by catastrophic flooding in the Pleistocene but this suggestion has remained controversial. Here we examine this hypothesis through an analysis of key landform features. We use a new compilation of multi- and single-beam bathymetry together with sub-bottom profiler data to establish the internal structure, planform geometry and hence origin of a set of 36 mid-channel islands. Whilst there is evidence of modern-day surficial sediment processes, the majority of the islands can be clearly demonstrated to be formed of bedrock, and are hence erosional remnants rather than depositional features. The islands display classic lemniscate or tear-drop outlines, with elongated tips pointing downstream, typical of streamlined islands formed during high-magnitude water flow. The length-to-width ratio for the entire island population is 3.4 ± 1.3 and the degree-of-elongation or k-value is 3.7 ± 1.4. These values are comparable to streamlined islands in other proven Pleistocene catastrophic flood terrains and are distinctly different to values found in modern-day rivers. The island geometries show a correlation with bedrock type: with those carved from Upper Cretaceous chalk having larger length-to-width ratios (3.2 ± 1.3) than those carved into more mixed Paleogene terrigenous sandstones, siltstones and mudstones (3.0 ± 1.5). We attribute these differences to the former rock unit having a lower skin friction which allowed longer island growth to achieve minimum drag. The Paleogene islands, although less numerous than the Chalk islands, also assume more perfect lemniscate shapes. These lithologies therefore reached island

  8. Streamlining Metadata Ingest and Discovery Using ECHO's REST-based API

    NASA Astrophysics Data System (ADS)

    Ericson, R.; Baynes, K.; Pilone, D.

    2012-12-01

    Enabling user access to Earth science data is a primary goal of NASA's Earth Observing System Data and Information Systems (EOSDIS) programs. NASA's Earth Observing System ClearingHOuse (ECHO) acts as the core metadata repository for EOSDIS's data centers, providing a centralized mechanism for metadata and data discovery and retrieval. ECHO has recently made strides to restructure its API; allowing data partners to streamline and synchronize their metadata ingest using RESTful web services. ECHO's legacy ingest process involves data uploads via FTP with asynchronous result reporting. Data centers provide single xml files or compressed data (zip) files that are unpacked, indexed and stored in ECHO data tables for future search and retrieval. Any problems related to metadata validation and ingest are reported after batch processing of discrete jobs have been completed. With ECHO's new REST-based web services, data providers will receive immediate feedback about the status of their ingested data and can ensure that their data exports are successful as soon as the data is posted to our repository. This presentation will introduce ECHO's potential new and existing data partners to the process of implementing data ingest via its RESTful web services API, providing real-world examples of end-to-end metadata management. Examples of ECHO's support of multi-format metadata ingest using both ECHO10 and ISO 19115 metadata formats will be showcased. This presentation will also pay special attention to tuning a provider's metadata, making it more easily searched and accessed via ECHO's various interfaces.

  9. Streamline Variability Plots for Characterizing the Uncertainty in Vector Field Ensembles.

    PubMed

    Ferstl, Florian; Bürger, Kai; Westermann, Rüdiger

    2016-01-01

    We present a new method to visualize from an ensemble of flow fields the statistical properties of streamlines passing through a selected location. We use principal component analysis to transform the set of streamlines into a low-dimensional Euclidean space. In this space the streamlines are clustered into major trends, and each cluster is in turn approximated by a multivariate Gaussian distribution. This yields a probabilistic mixture model for the streamline distribution, from which confidence regions can be derived in which the streamlines are most likely to reside. This is achieved by transforming the Gaussian random distributions from the low-dimensional Euclidean space into a streamline distribution that follows the statistical model, and by visualizing confidence regions in this distribution via iso-contours. We further make use of the principal component representation to introduce a new concept of streamline-median, based on existing median concepts in multidimensional Euclidean spaces. We demonstrate the potential of our method in a number of real-world examples, and we compare our results to alternative clustering approaches for particle trajectories as well as curve boxplots. PMID:26390476

  10. Simulation and modeling of the elliptic streamline flow

    NASA Technical Reports Server (NTRS)

    Blaisdell, G. A.; Shariff, K.

    1996-01-01

    Direct numerical simulations are performed for the elliptic streamline flow, which is a homogeneous turbulent flow that combines the effects of solid body rotation and strain. Simulations are run over a range of parameters in order to determine the effect of changing rotation and strain separately. For early times the nonlinear cascade is suppressed, but then is re-established at later times. The growth rate of turbulent kinetic energy agrees at early times with the trends from linear theory, but at later times the flow seems to approach an asymptotic state that is independent of the ratio of mean flow rotation rate to strain rate. A comparison with standard Reynolds stress turbulence models is made. It is found that for strong rotation rates, the models predict decay of the turbulence, while the simulations show exponential growth. Close examination of the simulation results shows that they are affected by excessively low Reynolds numbers. Suggestions for reducing low Reynolds number effects in future simulations is given.

  11. A Streamlined Artificial Variable Free Version of Simplex Method

    PubMed Central

    Inayatullah, Syed; Touheed, Nasir; Imtiaz, Muhammad

    2015-01-01

    This paper proposes a streamlined form of simplex method which provides some great benefits over traditional simplex method. For instance, it does not need any kind of artificial variables or artificial constraints; it could start with any feasible or infeasible basis of an LP. This method follows the same pivoting sequence as of simplex phase 1 without showing any explicit description of artificial variables which also makes it space efficient. Later in this paper, a dual version of the new method has also been presented which provides a way to easily implement the phase 1 of traditional dual simplex method. For a problem having an initial basis which is both primal and dual infeasible, our methods provide full freedom to the user, that whether to start with primal artificial free version or dual artificial free version without making any reformulation to the LP structure. Last but not the least, it provides a teaching aid for the teachers who want to teach feasibility achievement as a separate topic before teaching optimality achievement. PMID:25767883

  12. A streamlined search technology for identification of synergistic drug combinations.

    PubMed

    Weiss, Andrea; Berndsen, Robert H; Ding, Xianting; Ho, Chih-Ming; Dyson, Paul J; van den Bergh, Hubert; Griffioen, Arjan W; Nowak-Sliwinska, Patrycja

    2015-01-01

    A major key to improvement of cancer therapy is the combination of drugs. Mixing drugs that already exist on the market may offer an attractive alternative. Here we report on a new model-based streamlined feedback system control (s-FSC) method, based on a design of experiment approach, for rapidly finding optimal drug mixtures with minimal experimental effort. We tested combinations in an in vitro assay for the viability of a renal cell adenocarcinoma (RCC) cell line, 786-O. An iterative cycle of in vitro testing and s-FSC analysis was repeated a few times until an optimal low dose combination was reached. Starting with ten drugs that target parallel pathways known to play a role in the development and progression of RCC, we identified the best overall drug combination, being a mixture of four drugs (axitinib, erlotinib, dasatinib and AZD4547) at low doses, inhibiting 90% of cell viability. The removal of AZD4547 from the optimized drug combination resulted in 80% of cell viability inhibition, while still maintaining the synergistic interaction. These optimized drug combinations were significantly more potent than monotherapies of all individual drugs (p < 0.001, CI < 0.3). PMID:26416286

  13. VISMASHUP: streamlining the creation of custom visualization applications

    SciTech Connect

    Ahrens, James P; Santos, Emanuele; Lins, Lauro; Freire, Juliana; Silva, Cl'audio T

    2010-01-01

    Visualization is essential for understanding the increasing volumes of digital data. However, the process required to create insightful visualizations is involved and time consuming. Although several visualization tools are available, including tools with sophisticated visual interfaces, they are out of reach for users who have little or no knowledge of visualization techniques and/or who do not have programming expertise. In this paper, we propose VISMASHUP, a new framework for streamlining the creation of customized visualization applications. Because these applications can be customized for very specific tasks, they can hide much of the complexity in a visualization specification and make it easier for users to explore visualizations by manipulating a small set of parameters. We describe the framework and how it supports the various tasks a designer needs to carry out to develop an application, from mining and exploring a set of visualization specifications (pipelines), to the creation of simplified views of the pipelines, and the automatic generation of the application and its interface. We also describe the implementation of the system and demonstrate its use in two real application scenarios.

  14. Streamlining Metadata and Data Management for Evolving Digital Libraries

    NASA Astrophysics Data System (ADS)

    Clark, D.; Miller, S. P.; Peckman, U.; Smith, J.; Aerni, S.; Helly, J.; Sutton, D.; Chase, A.

    2003-12-01

    What began two years ago as an effort to stabilize the Scripps Institution of Oceanography (SIO) data archives from more than 700 cruises going back 50 years, has now become the operational fully-searchable "SIOExplorer" digital library, complete with thousands of historic photographs, images, maps, full text documents, binary data files, and 3D visualization experiences, totaling nearly 2 terabytes of digital content. Coping with data diversity and complexity has proven to be more challenging than dealing with large volumes of digital data. SIOExplorer has been built with scalability in mind, so that the addition of new data types and entire new collections may be accomplished with ease. It is a federated system, currently interoperating with three independent data-publishing authorities, each responsible for their own quality control, metadata specifications, and content selection. The IT architecture implemented at the San Diego Supercomputer Center (SDSC) streamlines the integration of additional projects in other disciplines with a suite of metadata management and collection building tools for "arbitrary digital objects." Metadata are automatically harvested from data files into domain-specific metadata blocks, and mapped into various specification standards as needed. Metadata can be browsed and objects can be viewed onscreen or downloaded for further analysis, with automatic proprietary-hold request management.

  15. The Single Habitat Module Concept a Streamlined Way to Explore

    NASA Technical Reports Server (NTRS)

    Chambliss, Joe

    2012-01-01

    Many concepts have been proposed for exploring space. In early 2010 presidential direction called for reconsidering the approach to address changes in exploration destinations, use of new technologies and development of new capabilities to support exploration of space. Considering the proposed new technologies and capabilities that NASA was directed to pursue, the Single Habitathabitat module (SHMSHM) concept for a more streamlined approach to the infrastructure and conduct of exploration missions was developed. The SHM concept combines many of the new promising technologies with a central concept of mission architectures that uses a single habitat module for all phases of an exploration mission. Integrating mission elements near Earth and fully fueling them prior to departure of the vicinity of Earth provides the capability of using the single habitat both in transit to an exploration destination and while exploring the destination. The concept employs the capability to return the habitat and interplanetary propulsion system to Earth vicinity so that those elements can be reused on subsequent exploration missions. This paper describes the SHM concept, and the advantages it provides to accomplish exploration objectives.

  16. Unexpectedly Streamlined Mitochondrial Genome of the Euglenozoan Euglena gracilis

    PubMed Central

    Dobáková, Eva; Flegontov, Pavel; Skalický, Tomáš; Lukeš, Julius

    2015-01-01

    In this study, we describe the mitochondrial genome of the excavate flagellate Euglena gracilis. Its gene complement is reduced as compared with the well-studied sister groups Diplonemea and Kinetoplastea. We have identified seven protein-coding genes: Three subunits of respiratory complex I (nad1, nad4, and nad5), one subunit of complex III (cob), and three subunits of complex IV (cox1, cox2, and a highly divergent cox3). Moreover, fragments of ribosomal RNA genes have also been identified. Genes encoding subunits of complex V, ribosomal proteins and tRNAs were missing, and are likely located in the nuclear genome. Although mitochondrial genomes of diplonemids and kinetoplastids possess the most complex RNA processing machineries known, including trans-splicing and editing of the uridine insertion/deletion type, respectively, our transcriptomic data suggest their total absence in E. gracilis. This finding supports a scenario in which the complex mitochondrial processing machineries of both sister groups evolved relatively late in evolution from a streamlined genome and transcriptome of their common predecessor. PMID:26590215

  17. Unexpectedly Streamlined Mitochondrial Genome of the Euglenozoan Euglena gracilis.

    PubMed

    Dobáková, Eva; Flegontov, Pavel; Skalický, Tomáš; Lukeš, Julius

    2015-12-01

    In this study, we describe the mitochondrial genome of the excavate flagellate Euglena gracilis. Its gene complement is reduced as compared with the well-studied sister groups Diplonemea and Kinetoplastea. We have identified seven protein-coding genes: Three subunits of respiratory complex I (nad1, nad4, and nad5), one subunit of complex III (cob), and three subunits of complex IV (cox1, cox2, and a highly divergent cox3). Moreover, fragments of ribosomal RNA genes have also been identified. Genes encoding subunits of complex V, ribosomal proteins and tRNAs were missing, and are likely located in the nuclear genome. Although mitochondrial genomes of diplonemids and kinetoplastids possess the most complex RNA processing machineries known, including trans-splicing and editing of the uridine insertion/deletion type, respectively, our transcriptomic data suggest their total absence in E. gracilis. This finding supports a scenario in which the complex mitochondrial processing machineries of both sister groups evolved relatively late in evolution from a streamlined genome and transcriptome of their common predecessor. PMID:26590215

  18. Quasi-steady linked vortices with chaotic streamlines

    NASA Astrophysics Data System (ADS)

    Velasco Fuentes, Oscar; Romero Arteaga, Angelica

    2010-11-01

    We study the dynamics of two or more toroidal filamentary vortices ---i.e. thin tubular vortices coiled on an immaterial torus--- in an otherwise quiescent, ideal fluid. Assuming that the vortices are identical and equally spaced on a meridional section of the torus, the flow evolution depends on the torus aspect ratio (R), the number of vortices (N), and the vortex topology (Vp,q, where p and q are coprime integers such that the Vp,q vortex winds p times round the torus symmetry axis and q times round the torus centerline). The evolution of sets of V1,1 and V1,2 vortices was computed using the Rosenhead--Moore approximation to evaluate the velocity field and a fourth-order Runge-Kutta scheme to advance in time. It was found that vortex sets with N<6 and R<0.15 progressed along and rotated around the torus symmetry axis in an almost steady manner while each vortex in the set approximately preserved its shape. The velocity field, observed in the comoving frame, has two stagnation points. The stream tube starting at the forward stagnation point and the stream tube ending at the backward stagnation point transversely intersect along a finite number of streamlines. The three-dimensional chaotic tangle that arises has a geometry which depends primarily on the number of vortices N.

  19. Enhanced Performance of Streamline-Traced External-Compression Supersonic Inlets

    NASA Technical Reports Server (NTRS)

    Slater, John W.

    2015-01-01

    A computational design study was conducted to enhance the aerodynamic performance of streamline-traced, external-compression inlets for Mach 1.6. The current study explored a new parent flowfield for the streamline tracing and several variations of inlet design factors, including the axial displacement and angle of the subsonic cowl lip, the vertical placement of the engine axis, and the use of porous bleed in the subsonic diffuser. The performance was enhanced over that of an earlier streamline-traced inlet such as to increase the total pressure recovery and reduce total pressure distortion

  20. 48 CFR 12.602 - Streamlined evaluation of offers.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... evaluation factors and relative importance of those factors. However, when using the simplified acquisition procedures in part 13, contracting officers are not required to describe the relative importance of... the item offered to meet the agency need), price and past performance. Technical capability may...

  1. Enhanced Performance of Streamline-Traced External-Compression Supersonic Inlets

    NASA Technical Reports Server (NTRS)

    Slater, John W.

    2015-01-01

    A computational design study was conducted to enhance the aerodynamic performance of streamline-traced, external-compression inlets for Mach 1.6. Compared to traditional external-compression, two-dimensional and axisymmetric inlets, streamline-traced inlets promise reduced cowl wave drag and sonic boom, but at the expense of reduced total pressure recovery and increased total pressure distortion. The current study explored a new parent flowfield for the streamline tracing and several variations of inlet design factors, including the axial displacement and angle of the subsonic cowl lip, the vertical placement of the engine axis, and the use of porous bleed in the subsonic diffuser. The performance was enhanced over that of an earlier streamline-traced inlet such as to increase the total pressure recovery and reduce total pressure distortion.

  2. Effects of surface pressures and streamline metrics on the calculation of laminar heating rates

    NASA Technical Reports Server (NTRS)

    Riley, Christopher J.; Dejarnette, Fred R.; Zoby, Vincent

    1988-01-01

    The effect of streamline geometry and pressure distributions on surface heating rates is examined for slender, spherically blunted cones. The modifications to the approximate aeroheating code include a curve fit of pressures computed by an Euler solution over a range of Mach numbers and cone angles. The streamline geometry is then found using the surface pressures and inviscid surface properties. Previously, streamlines were determined using the inviscid properties at the edge of the boundary layer when accounting for the effects of entropy-layer swallowing. Streamline calculations are now based on inviscid surface conditions rather than boundary-layer edge properties. However, the heating rates are calculated using inviscid properties at the edge of the boundary layer. Resulting heating rates compare favorably with solutions from the viscous-shock-layer equations.

  3. Streamline Integration Using MPI-Hybrid Parallelism on a Large Multicore Architecture

    SciTech Connect

    Garth, Christoph

    2011-01-01

    Streamline computation in a very large vector field data set represents a significant challenge due to the nonlocal and data-dependent nature of streamline integration. In this paper, we conduct a study of the performance characteristics of hybrid parallel programming and execution as applied to streamline integration on a large, multicore platform. With multicore processors now prevalent in clusters and supercomputers, there is a need to understand the impact of these hybrid systems in order to make the best implementation choice. We use two MPI-based distribution approaches based on established parallelization paradigms, parallelize over seeds and parallelize over blocks, and present a novel MPI-hybrid algorithm for each approach to compute streamlines. Our findings indicate that the work sharing between cores in the proposed MPI-hybrid parallel implementation results in much improved performance and consumes less communication and I/O bandwidth than a traditional, nonhybrid distributed implementation.

  4. Streamline integration using MPI-hybrid parallelism on a large multicore architecture.

    PubMed

    Camp, David; Garth, Christoph; Childs, Hank; Pugmire, Dave; Joy, Kenneth I

    2011-11-01

    Streamline computation in a very large vector field data set represents a significant challenge due to the nonlocal and data-dependent nature of streamline integration. In this paper, we conduct a study of the performance characteristics of hybrid parallel programming and execution as applied to streamline integration on a large, multicore platform. With multicore processors now prevalent in clusters and supercomputers, there is a need to understand the impact of these hybrid systems in order to make the best implementation choice. We use two MPI-based distribution approaches based on established parallelization paradigms, parallelize over seeds and parallelize over blocks, and present a novel MPI-hybrid algorithm for each approach to compute streamlines. Our findings indicate that the work sharing between cores in the proposed MPI-hybrid parallel implementation results in much improved performance and consumes less communication and I/O bandwidth than a traditional, nonhybrid distributed implementation. PMID:21885895

  5. A streamline curvature method for design of supercritical and subcritical airfoils

    NASA Technical Reports Server (NTRS)

    Barger, R. L.; Brooks, C. W., Jr.

    1974-01-01

    An airfoil design procedure, applicable to both subcritical and supercritical airfoils, is described. The method is based on the streamline curvature velocity equation. Several examples illustrating this method are presented and discussed.

  6. Streamline Integration using MPI-Hybrid Parallelism on a Large Multi-Core Architecture

    SciTech Connect

    Camp, David; Garth, Christoph; Childs, Hank; Pugmire, Dave; Joy, Kenneth I.

    2010-11-01

    Streamline computation in a very large vector field data set represents a significant challenge due to the non-local and datadependentnature of streamline integration. In this paper, we conduct a study of the performance characteristics of hybrid parallel programmingand execution as applied to streamline integration on a large, multicore platform. With multi-core processors now prevalent in clustersand supercomputers, there is a need to understand the impact of these hybrid systems in order to make the best implementation choice.We use two MPI-based distribution approaches based on established parallelization paradigms, parallelize-over-seeds and parallelize-overblocks,and present a novel MPI-hybrid algorithm for each approach to compute streamlines. Our findings indicate that the work sharing betweencores in the proposed MPI-hybrid parallel implementation results in much improved performance and consumes less communication andI/O bandwidth than a traditional, non-hybrid distributed implementation.

  7. 3 CFR 13571 - Executive Order 13571 of April 27, 2011. Streamlining Service Delivery and Improving Customer...

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ...-service options accessed by the Internet or mobile phone and improved processes that deliver services... service channels (such as online, phone, in-person, and mail services); (e) streamlining agency...

  8. Streamlining of the RELAP5-3D Code

    SciTech Connect

    Mesina, George L; Hykes, Joshua; Guillen, Donna Post

    2007-11-01

    RELAP5-3D is widely used by the nuclear community to simulate general thermal hydraulic systems and has proven to be so versatile that the spectrum of transient two-phase problems that can be analyzed has increased substantially over time. To accommodate the many new types of problems that are analyzed by RELAP5-3D, both the physics and numerical methods of the code have been continuously improved. In the area of computational methods and mathematical techniques, many upgrades and improvements have been made decrease code run time and increase solution accuracy. These include vectorization, parallelization, use of improved equation solvers for thermal hydraulics and neutron kinetics, and incorporation of improved library utilities. In the area of applied nuclear engineering, expanded capabilities include boron and level tracking models, radiation/conduction enclosure model, feedwater heater and compressor components, fluids and corresponding correlations for modeling Generation IV reactor designs, and coupling to computational fluid dynamics solvers. Ongoing and proposed future developments include improvements to the two-phase pump model, conversion to FORTRAN 90, and coupling to more computer programs. This paper summarizes the general improvements made to RELAP5-3D, with an emphasis on streamlining the code infrastructure for improved maintenance and development. With all these past, present and planned developments, it is necessary to modify the code infrastructure to incorporate modifications in a consistent and maintainable manner. Modifying a complex code such as RELAP5-3D to incorporate new models, upgrade numerics, and optimize existing code becomes more difficult as the code grows larger. The difficulty of this as well as the chance of introducing errors is significantly reduced when the code is structured. To streamline the code into a structured program, a commercial restructuring tool, FOR_STRUCT, was applied to the RELAP5-3D source files. The

  9. Streamlined, Inexpensive 3D Printing of the Brain and Skull.

    PubMed

    Naftulin, Jason S; Kimchi, Eyal Y; Cash, Sydney S

    2015-01-01

    Neuroimaging technologies such as Magnetic Resonance Imaging (MRI) and Computed Tomography (CT) collect three-dimensional data (3D) that is typically viewed on two-dimensional (2D) screens. Actual 3D models, however, allow interaction with real objects such as implantable electrode grids, potentially improving patient specific neurosurgical planning and personalized clinical education. Desktop 3D printers can now produce relatively inexpensive, good quality prints. We describe our process for reliably generating life-sized 3D brain prints from MRIs and 3D skull prints from CTs. We have integrated a standardized, primarily open-source process for 3D printing brains and skulls. We describe how to convert clinical neuroimaging Digital Imaging and Communications in Medicine (DICOM) images to stereolithography (STL) files, a common 3D object file format that can be sent to 3D printing services. We additionally share how to convert these STL files to machine instruction gcode files, for reliable in-house printing on desktop, open-source 3D printers. We have successfully printed over 19 patient brain hemispheres from 7 patients on two different open-source desktop 3D printers. Each brain hemisphere costs approximately $3-4 in consumable plastic filament as described, and the total process takes 14-17 hours, almost all of which is unsupervised (preprocessing = 4-6 hr; printing = 9-11 hr, post-processing = <30 min). Printing a matching portion of a skull costs $1-5 in consumable plastic filament and takes less than 14 hr, in total. We have developed a streamlined, cost-effective process for 3D printing brain and skull models. We surveyed healthcare providers and patients who confirmed that rapid-prototype patient specific 3D models may help interdisciplinary surgical planning and patient education. The methods we describe can be applied for other clinical, research, and educational purposes. PMID:26295459

  10. Streamlined, Inexpensive 3D Printing of the Brain and Skull

    PubMed Central

    Cash, Sydney S.

    2015-01-01

    Neuroimaging technologies such as Magnetic Resonance Imaging (MRI) and Computed Tomography (CT) collect three-dimensional data (3D) that is typically viewed on two-dimensional (2D) screens. Actual 3D models, however, allow interaction with real objects such as implantable electrode grids, potentially improving patient specific neurosurgical planning and personalized clinical education. Desktop 3D printers can now produce relatively inexpensive, good quality prints. We describe our process for reliably generating life-sized 3D brain prints from MRIs and 3D skull prints from CTs. We have integrated a standardized, primarily open-source process for 3D printing brains and skulls. We describe how to convert clinical neuroimaging Digital Imaging and Communications in Medicine (DICOM) images to stereolithography (STL) files, a common 3D object file format that can be sent to 3D printing services. We additionally share how to convert these STL files to machine instruction gcode files, for reliable in-house printing on desktop, open-source 3D printers. We have successfully printed over 19 patient brain hemispheres from 7 patients on two different open-source desktop 3D printers. Each brain hemisphere costs approximately $3–4 in consumable plastic filament as described, and the total process takes 14–17 hours, almost all of which is unsupervised (preprocessing = 4–6 hr; printing = 9–11 hr, post-processing = <30 min). Printing a matching portion of a skull costs $1–5 in consumable plastic filament and takes less than 14 hr, in total. We have developed a streamlined, cost-effective process for 3D printing brain and skull models. We surveyed healthcare providers and patients who confirmed that rapid-prototype patient specific 3D models may help interdisciplinary surgical planning and patient education. The methods we describe can be applied for other clinical, research, and educational purposes. PMID:26295459

  11. Improving Pharmaceutical Aerosol Delivery During Noninvasive Ventilation: Effects of Streamlined Components

    PubMed Central

    Longest, P. Worth; Golshahi, Laleh; Hindle, Michael

    2013-01-01

    Aerosol delivery efficiency during noninvasive ventilation (NIV) is known to be low (~10%) and is associated with poor outcomes of aerosol therapy. The objective of this study was to demonstrate the benefit of redesigning ventilation circuit components using a streamlining approach to improve aerosol delivery during nasal high flow therapy in adults with a conventional-sized aerosol from a mesh nebulizer. The ventilation circuit consisted of a humidifier, mesh nebulizer, mixing T-connector (with 90° angle), 10 mm tubing, and nasal cannula interface. In vitro experiments and computational fluid dynamics analyses were used to evaluate depositional losses in a system of existing components and a newly proposed streamlined T-connector and cannula at flow rates of 30 and 45 LPM. Streamlined designs reduced deposition in the T-connector by a factor of 4. In the nasal cannula, the streamlined designs reduced depositional losses by factors of 1.25–2.0. With the streamlined designs, the highest emitted dose achieved was >40% for a conventional-sized aerosol at 30 LPM. Streamlined geometries offer an effective method to significantly improve the delivery of aerosols through components of NIV systems. This increase in delivery efficiency is important for new inhaled medications with narrow therapeutic windows, increased costs, or long delivery times. PMID:23423706

  12. 48 CFR 25.602-2 - Buy American Act.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 1 2012-10-01 2012-10-01 false Buy American Act. 25.602-2... PROGRAMS FOREIGN ACQUISITION American Recovery and Reinvestment Act-Buy American Act-Construction Materials 25.602-2 Buy American Act. Except as provided in 25.603, use only unmanufactured...

  13. 48 CFR 25.602-2 - Buy American Act.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false Buy American Act. 25.602-2... PROGRAMS FOREIGN ACQUISITION American Recovery and Reinvestment Act-Buy American Act-Construction Materials 25.602-2 Buy American Act. Except as provided in 25.603, use only unmanufactured...

  14. 48 CFR 25.602-2 - Buy American Act.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 1 2013-10-01 2013-10-01 false Buy American Act. 25.602-2... PROGRAMS FOREIGN ACQUISITION American Recovery and Reinvestment Act-Buy American Act-Construction Materials 25.602-2 Buy American Act. Except as provided in 25.603, use only unmanufactured...

  15. 48 CFR 25.602-2 - Buy American Act.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 1 2011-10-01 2011-10-01 false Buy American Act. 25.602-2... PROGRAMS FOREIGN ACQUISITION American Recovery and Reinvestment Act-Buy American Act-Construction Materials 25.602-2 Buy American Act. Except as provided in 25.603, use only unmanufactured...

  16. 78 FR 32595 - Revision of Freedom of Information Act Regulation

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-31

    ...This proposed rule would amend HUD's regulations implementing the Freedom of Information Act (FOIA). HUD is proposing these amendments to update and streamline HUD's current FOIA regulation. This proposed rule would update HUD's regulations to reflect statutory changes to FOIA, current HUD organizational structure, and current HUD policies and practices with respect to FOIA. Finally, the rule......

  17. Streamlining Data Access Services and Data Analysis Services Integration

    NASA Astrophysics Data System (ADS)

    Del Rio, N.; Pennington, D. D.; Pinheiro da Silva, P.; Benedict, K. K.

    2012-12-01

    There are few data analysis services capable of understanding and consuming data coming from multiple data access services. This lack of interoperability between data access services and data analysis services is indeed a major roadblock for science because it prevents the reuse and repurposing of both data and analytical software to support new scientific discoveries. In this presentation, we discuss this problem in light of the Earth, Life, and Semantic Web (ELSEWEB) project funded through NASA's ACCESS Program. The project uses the University of Kansas' Lifemapper system as its analytical Web Service platform, which models potential future species distributions under scenarios of climate change. In an effort to broaden the range of scenarios to include land cover/land use change, ELSEWEB aims to streamline the flow of highly heterogeneous geographic, social, and geological data hosted at UNM's Earth Data Analysis Center (EDAC) through a collection of OGC Web Coverage Services into Lifemapper. In turn, this integration will enable new modeling of complex factors associated with biotic change such as health and infectious disease, that depend not only on climate change and species distributions, but also on other human/environmental interactions. In this presentation we discuss the integration of Lifemapper and EDAC data and model services, provided by a third party semantic system, known as VisKo, that (1) translates Lifemapper data requirements to EDAC service invocations and (2) pipes the data output from EDAC into Lifemapper. VisKo is supported by a knowledge base of web service descriptions that contains information about interface requirements as well as invocation details, including service parameters. VisKo ontologies are designed to capture the knowledge required by the system to orchestrate and execute service pipelines that perform scientist's required computation. The ELSEWEB project also aims to expand VisKo's original goal of building visualization

  18. 48 CFR 50.205-1 - SAFETY Act Considerations.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Fostering Effective Technologies Act of 2002 50.205-1 SAFETY Act Considerations. (a) SAFETY Act applicability. Requiring activities should review requirements to identify potential technologies that prevent... acquisitions involving such technologies, the requiring activity should ascertain through discussions with...

  19. 25 CFR 151.3 - Land acquisition policy.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER LAND ACQUISITIONS § 151.3 Land acquisition policy. Land not held in trust or restricted status may only be acquired for an individual Indian or a tribe in trust status when such acquisition is authorized by an act of Congress. No...

  20. 16 CFR 802.50 - Acquisitions of foreign assets.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 16 Commercial Practices 1 2010-01-01 2010-01-01 false Acquisitions of foreign assets. 802.50... Acquisitions of foreign assets. (a) The acquisition of assets located outside the United States shall be exempt from the requirements of the act unless the foreign assets the acquiring person would hold as a...

  1. 48 CFR 52.224-2 - Privacy Act.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 2 2011-10-01 2011-10-01 false Privacy Act. 52.224-2 Section 52.224-2 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION (CONTINUED) CLAUSES AND FORMS SOLICITATION PROVISIONS AND CONTRACT CLAUSES Text of Provisions and Clauses 52.224-2 Privacy Act. As prescribed in 24.104, insert...

  2. 17 CFR 270.5b-3 - Acquisition of repurchase agreement or refunded security treated as acquisition of underlying...

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 17 Commodity and Securities Exchanges 3 2010-04-01 2010-04-01 false Acquisition of repurchase agreement or refunded security treated as acquisition of underlying securities. 270.5b-3 Section 270.5b-3..., INVESTMENT COMPANY ACT OF 1940 § 270.5b-3 Acquisition of repurchase agreement or refunded security treated...

  3. Streamlined Reflective Action Research for Creative Instructional Improvement

    ERIC Educational Resources Information Center

    Ambrose, Don; Lang, Kathy; Grothman, Marta

    2007-01-01

    Busy educators find it difficult to work creatively in conditions imposed by ill-conceived, politically charged reform initiatives such as the No Child Left Behind Act. In order to keep up with research findings, emerging theories and practical recommendations in the creativity literature, they need accessible, highly condensed distillations of…

  4. 77 FR 56744 - Federal Acquisition Regulation; Federal Acquisition Circular 2005-61; Small Entity Compliance Guide

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-13

    ...This document is issued under the joint authority of DOD, GSA, and NASA. This Small Entity Compliance Guide has been prepared in accordance with section 212 of the Small Business Regulatory Enforcement Fairness Act of 1996. It consists of a summary of the rule appearing in Federal Acquisition Circular (FAC) 2005-61, which amends the Federal Acquisition Regulation (FAR). An asterisk (*) next to......

  5. 78 FR 13769 - Federal Acquisition Regulation; Federal Acquisition Circular 2005-66; Small Entity Compliance Guide

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-28

    ... Acquisition Procedures for Certain Commercial Items. IV Technical Amendments SUPPLEMENTARY INFORMATION...--Extension of Authority for Use of Simplified Acquisition Procedures for Certain Commercial Items (FAR Case... Act (NDAA) for Fiscal Year (FY) 2013. Section 822 extends the authority of the Commercial Item...

  6. 78 FR 13763 - Federal Acquisition Regulation; Federal Acquisition Circular 2005-66; Introduction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-28

    ... Acquisition Procedures for Certain Commercial Items. IV Technical Amendments. SUPPLEMENTARY INFORMATION...--Extension of Authority for Use of Simplified Acquisition Procedures for Certain Commercial Items (FAR Case... Act (NDAA) for Fiscal Year (FY) 2013. Section 822 extends the authority of the Commercial Item...

  7. Research on Streamlines and Aerodynamic Heating for Unstructured Grids on High-Speed Vehicles

    NASA Technical Reports Server (NTRS)

    DeJarnette, Fred R.; Hamilton, H. Harris (Technical Monitor)

    2001-01-01

    Engineering codes are needed which can calculate convective heating rates accurately and expeditiously on the surfaces of high-speed vehicles. One code which has proven to meet these needs is the Langley Approximate Three-Dimensional Convective Heating (LATCH) code. It uses the axisymmetric analogue in an integral boundary-layer method to calculate laminar and turbulent heating rates along inviscid surface streamlines. It requires the solution of the inviscid flow field to provide the surface properties needed to calculate the streamlines and streamline metrics. The LATCH code has been used with inviscid codes which calculated the flow field on structured grids, Several more recent inviscid codes calculate flow field properties on unstructured grids. The present research develops a method to calculate inviscid surface streamlines, the streamline metrics, and heating rates using the properties calculated from inviscid flow fields on unstructured grids. Mr. Chris Riley, prior to his departure from NASA LaRC, developed a preliminary code in the C language, called "UNLATCH", to accomplish these goals. No publication was made on his research. The present research extends and improves on the code developed by Riley. Particular attention is devoted to the stagnation region, and the method is intended for programming in the FORTRAN 90 language.

  8. Analysis of variable-thickness, streamlined transducer array windowing concepts for high speed underwater vehicles

    NASA Astrophysics Data System (ADS)

    Koch, Robert M.

    2002-11-01

    Recent research in very high speed underwater vehicles shows they require a much more streamlined vehicle nose than the present rather flat tactical scale vehicle nose. It has been found that the common forward-facing transducer array with a constant thickness array window utilized on current lower speed vehicles is inadequate. Two newer alternate front-end array concepts suitable for lower drag, higher speed vehicles being investigated are (a) a variable thickness, streamlined array window on a flat forward facing array and (b) a streamlined vehicle nose structure consisting of a built-in distributed, conformal array. While these highly streamlined concepts are attractive from the standpoint of reducing vehicle drag at higher speeds, both require reexamination of the effects of high curvature on front-end sonar array performance. In the present paper, both above streamlined array concepts are numerically examined using the sara2d dynamic structural-acoustic Finite Element Analysis (FEA) code. First, the acoustic performance of a hemispherical array window is compared to a common equal aperture flat window in both transmit (outgoing acoustic wave) and receive (incident acoustic wave) modes. Second, a dynamic simulation of acoustic array beam-forming and beam-steering is performed for a conical shaped conformal array to assess the feasibility of the concept.

  9. Syntax acquisition.

    PubMed

    Crain, Stephen; Thornton, Rosalind

    2012-03-01

    Every normal child acquires a language in just a few years. By 3- or 4-years-old, children have effectively become adults in their abilities to produce and understand endlessly many sentences in a variety of conversational contexts. There are two alternative accounts of the course of children's language development. These different perspectives can be traced back to the nature versus nurture debate about how knowledge is acquired in any cognitive domain. One perspective dates back to Plato's dialog 'The Meno'. In this dialog, the protagonist, Socrates, demonstrates to Meno, an aristocrat in Ancient Greece, that a young slave knows more about geometry than he could have learned from experience. By extension, Plato's Problem refers to any gap between experience and knowledge. How children fill in the gap in the case of language continues to be the subject of much controversy in cognitive science. Any model of language acquisition must address three factors, inter alia: 1. The knowledge children accrue; 2. The input children receive (often called the primary linguistic data); 3. The nonlinguistic capacities of children to form and test generalizations based on the input. According to the famous linguist Noam Chomsky, the main task of linguistics is to explain how children bridge the gap-Chomsky calls it a 'chasm'-between what they come to know about language, and what they could have learned from experience, even given optimistic assumptions about their cognitive abilities. Proponents of the alternative 'nurture' approach accuse nativists like Chomsky of overestimating the complexity of what children learn, underestimating the data children have to work with, and manifesting undue pessimism about children's abilities to extract information based on the input. The modern 'nurture' approach is often referred to as the usage-based account. We discuss the usage-based account first, and then the nativist account. After that, we report and discuss the findings of several

  10. DSPS in data acquisition

    SciTech Connect

    Kirsch, M.; Haeupke, T.; Oelschlaeger, R.; Struck, B.

    1997-12-31

    Off-the-shelf and customized DSP boards in different bus architectures are perfectly suited to act as building blocks for flexible and high performance data acquisition systems. Due to their architecture they can be used to enhance the performance of existing equipment as add ons, as state-of-the-art readout controllers, event builders, on-the-fly data formatters and higher level trigger processors. Applications covering the above mentioned fields with Motorolas 96002 HARC DSP in the DESY HERMES and H1 experiments, at the focal plane polarimeter at KVI and the NIST high flux neutron backscattering spectrometer will be presented. Future possibilities with VME, PCI and PMC boards based on Analog Devices SHARC DSP will be discussed. Systems on the base of Texas Instruments TMS320C6X promise to provide unprecedented performance.

  11. Portable data acquisition system

    SciTech Connect

    Bowers, J; Rogers, H

    1999-05-03

    Lawrence Livermore National Laboratory (LLNL) has developed a Portable Data Acquisition (DAQ) System that is basically a laboratory-scale of Program Logic Control (PLC). This DAQ system can obtain signals from numerous sensors (e.g., pH, level, pressure, flow meters), open and close valves, and turn on and off pumps. The data can then be saved on a spreadsheet or displayed as a graph/indicator in real-time on a computer screen. The whole DAQ system was designed to be portable so that it could sit on a bench top during laboratory-scale treatability studies, or moved out into the field during larger studies. This DAQ system is also fairly simple to use. All that is required is some working knowledge of LabVIEW 4.1, and how to properly wire the process equipment. The DAQ system has been used during treatability studies on cesium precipitation, controlled hydrolysis of water- reactive wastes, and other waste treatment studies that enable LLNL to comply with the Federal Facility Compliance Act (FFCAct). Improved data acquisition allows the study to be better monitored, and therefore better controlled, and can be used to determine the results of the treatment study more effectively. This also contributes to the design of larger treatment processes.

  12. Self streamlining wind tunnel: Further low speed testing and final design studies for the transonic facility

    NASA Technical Reports Server (NTRS)

    Wolf, S. W. D.

    1977-01-01

    Work has continued with the low speed self streamlining wind tunnel (SSWT) using the NACA 0012-64 airfoil in an effort to explain the discrepancies between the NASA Langley low turbulence pressure tunnel (LTPT) and SSWT results obtained with the airfoil stalled. Conventional wind tunnel corrections were applied to straight wall SSWT airfoil data, to illustrate the inadequacy of standard correction techniques in circumstances of high blockage. Also one SSWT test was re-run at different air speeds to investigate the effects of such changes on airfoil data and wall contours. Mechanical design analyses for the transonic self streamlining wind tunnel (TSWT) were completed by the application of theoretical airfoil flow field data to the elastic beam and streamline analysis. The control system for the transonic facility is outlined.

  13. Self streamlining wind tunnel: Further low speed testing and final design studies for the transonic facility

    NASA Technical Reports Server (NTRS)

    Wolf, S. W. D.

    1978-01-01

    Work was continued with the low speed self streamlining wind tunnel (SSWT) using the NACA 0012-64 airfoil in an effort to explain the discrepancies between the NASA Langley low turbulence pressure tunnel (LTPT) and SSWT results obtained with the airfoil stalled. Conventional wind tunnel corrections were applied to straight wall SSWT airfoil data, to illustrate the inadequacy of standard correction techniques in circumstances of high blockage. Also one SSWT test was re-run at different air speeds to investigate the effects of such changes (perhaps through changes in Reynold's number and freestream turbulence levels) on airfoil data and wall contours. Mechanical design analyses for the transonic self-streamlining wind tunnel (TSWT) were completed by the application of theoretical airfoil flow field data to the elastic beam and streamline analysis. The control system for the transonic facility, which will eventually allow on-line computer operation of the wind tunnel, was outlined.

  14. Integration of streamlines from measured static pressure fields on a surface

    NASA Astrophysics Data System (ADS)

    Vollmers, H.

    1982-10-01

    Streamlines, which offer an intuitive illustration of three-dimensional boundary layer flow and its regions of mutual dependence, are obtained through the integration of numerically measured pressure fields by means of a shooting technique. The method is applied to static pressure data obtained by Meier and Kreplin (1978) for an axisymmetric ellipsoid. For the pressure field of the potential solution, the trajectories showed the expected asymptotic behavior, and it is shown that for a 30 deg inclination and 45 m/sec freestream velocity, the streamlines have a regular pattern.

  15. 48 CFR 3009.570 - Limitations on contractors acting as lead system integrators.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 7 2011-10-01 2011-10-01 false Limitations on contractors acting as lead system integrators. 3009.570 Section 3009.570 Federal Acquisition Regulations System... contractors acting as lead system integrators....

  16. 48 CFR 3009.570 - Limitations on contractors acting as lead system integrators.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 7 2013-10-01 2012-10-01 true Limitations on contractors acting as lead system integrators. 3009.570 Section 3009.570 Federal Acquisition Regulations System... contractors acting as lead system integrators....

  17. 48 CFR 17.502-2 - The Economy Act.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 1 2011-10-01 2011-10-01 false The Economy Act. 17.502-2... AND CONTRACT TYPES SPECIAL CONTRACTING METHODS Interagency Acquisitions 17.502-2 The Economy Act. (a) The Economy Act (31 U.S.C. 1535) authorizes agencies to enter into agreements to obtain supplies...

  18. 48 CFR 25.703-2 - Iran Sanctions Act.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 1 2014-10-01 2014-10-01 false Iran Sanctions Act. 25.703... SOCIOECONOMIC PROGRAMS FOREIGN ACQUISITION Prohibited Sources 25.703-2 Iran Sanctions Act. (a) Certification—(1) Certification relating to activities described in section 5 of the Iran Sanctions Act. As required by section...

  19. 48 CFR 25.703-2 - Iran Sanctions Act.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 1 2013-10-01 2013-10-01 false Iran Sanctions Act. 25.703... SOCIOECONOMIC PROGRAMS FOREIGN ACQUISITION Prohibited Sources 25.703-2 Iran Sanctions Act. (a) Certification—(1) Certification relating to activities described in section 5 of the Iran Sanctions Act. As required by section...

  20. 48 CFR 25.703-2 - Iran Sanctions Act.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 1 2011-10-01 2011-10-01 false Iran Sanctions Act. 25.703... SOCIOECONOMIC PROGRAMS FOREIGN ACQUISITION Prohibited Sources 25.703-2 Iran Sanctions Act. (a) Certification. (1) As required by the Iran Sanctions Act, unless an exception applies or a waiver is granted...

  1. 48 CFR 25.703-2 - Iran Sanctions Act.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 1 2012-10-01 2012-10-01 false Iran Sanctions Act. 25.703... SOCIOECONOMIC PROGRAMS FOREIGN ACQUISITION Prohibited Sources 25.703-2 Iran Sanctions Act. (a) Certification. (1) As required by the Iran Sanctions Act (50 U.S.C. 1701 note), unless an exception applies...

  2. 48 CFR 17.502-2 - The Economy Act.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 1 2014-10-01 2014-10-01 false The Economy Act. 17.502-2... AND CONTRACT TYPES SPECIAL CONTRACTING METHODS Interagency Acquisitions 17.502-2 The Economy Act. (a) The Economy Act (31 U.S.C. 1535) authorizes agencies to enter into agreements to obtain supplies...

  3. 48 CFR 17.502-2 - The Economy Act.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 1 2013-10-01 2013-10-01 false The Economy Act. 17.502-2... AND CONTRACT TYPES SPECIAL CONTRACTING METHODS Interagency Acquisitions 17.502-2 The Economy Act. (a) The Economy Act (31 U.S.C. 1535) authorizes agencies to enter into agreements to obtain supplies...

  4. 48 CFR 17.502-2 - The Economy Act.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 1 2012-10-01 2012-10-01 false The Economy Act. 17.502-2... AND CONTRACT TYPES SPECIAL CONTRACTING METHODS Interagency Acquisitions 17.502-2 The Economy Act. (a) The Economy Act (31 U.S.C. 1535) authorizes agencies to enter into agreements to obtain supplies...

  5. Investigating Second Language Acquisition.

    ERIC Educational Resources Information Center

    Jordens, Peter, Ed.; Lalleman, Josine, Ed.

    Essays in second language acquisition include: "The State of the Art in Second Language Acquisition Research" (Josine Lalleman); "Crosslinguistic Influence with Special Reference to the Acquisition of Grammar" (Michael Sharwood Smith); "Second Language Acquisition by Adult Immigrants: A Multiple Case Study of Turkish and Moroccan Learners of…

  6. STABLE PLUME DISPERSION OVER AN ISOLATED HILL: RELEASES ABOVE THE DIVIDING-STREAMLINE HEIGHT

    EPA Science Inventory

    Experiments were conducted in a stably stratified towing tank wherein the density gradient was linear and the dividing-streamline height H(D) was half the hill height. Effluent was released at three elevations above H(D). Pairs of tows were made such that, in one tow, the hill (u...

  7. 75 FR 50750 - Streamlined Procedure for Appeal Brief Review in Inter Partes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-17

    ... United States Patent and Trademark Office Streamlined Procedure for Appeal Brief Review in Inter Partes... appeal briefs filed in inter partes reexamination proceeding appeals to increase the efficiency of the... determining whether appeal briefs filed in inter partes reexamination proceedings (i.e., appellant's...

  8. 64 FR 62566 - Streamlining of Regulations for Real Estate and Chattel Appraisals

    Federal Register 2010, 2011, 2012, 2013, 2014

    1999-11-17

    ... 0560-AF69 Streamlining of Regulations for Real Estate and Chattel Appraisals AGENCIES: Rural Housing... procedures from the Agency's regulations governing real estate and chattel appraisals used in conjunction with the Farm Loan Programs, and clarifies the requirement that Agency real estate appraisals...

  9. 77 FR 68790 - Program Comment Issued for Streamlining Section 106 Review for Actions Affecting Post-1945...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-16

    .../archive/NotesDocs/25-25%2815%29_FR.pdf ). (A) Reinforced concrete slab bridges (i) Reinforced concrete... Concrete and Steel Bridges AGENCY: Advisory Council on Historic Preservation. ACTION: Program Comment issued for streamlining Section 106 review for undertakings affecting post-1945 concrete and...

  10. 24 CFR 903.12 - What are the streamlined Annual Plan requirements for small PHAs?

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... Annual Plan requirements for fiscal years in which its 5-Year Plan is also due. For the fiscal year in which its 5-Year Plan is also due, the streamlined Annual Plan of the small PHA shall consist of the... Plan requirements for small PHAs? 903.12 Section 903.12 Housing and Urban Development...

  11. 24 CFR 903.12 - What are the streamlined Annual Plan requirements for small PHAs?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... Annual Plan requirements for fiscal years in which its 5-Year Plan is also due. For the fiscal year in which its 5-Year Plan is also due, the streamlined Annual Plan of the small PHA shall consist of the... Plan requirements for small PHAs? 903.12 Section 903.12 Housing and Urban Development...

  12. 24 CFR 903.12 - What are the streamlined Annual Plan requirements for small PHAs?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... Annual Plan requirements for fiscal years in which its 5-Year Plan is also due. For the fiscal year in which its 5-Year Plan is also due, the streamlined Annual Plan of the small PHA shall consist of the... Plan requirements for small PHAs? 903.12 Section 903.12 Housing and Urban Development...

  13. 24 CFR 903.12 - What are the streamlined Annual Plan requirements for small PHAs?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... Annual Plan requirements for fiscal years in which its 5-Year Plan is also due. For the fiscal year in which its 5-Year Plan is also due, the streamlined Annual Plan of the small PHA shall consist of the... Plan requirements for small PHAs? 903.12 Section 903.12 Housing and Urban Development...

  14. Implementing an Enterprise Information System to Reengineer and Streamline Administrative Processes in a Distance Learning Unit

    ERIC Educational Resources Information Center

    Abdous, M'hammed; He, Wu

    2009-01-01

    During the past three years, we have developed and implemented an enterprise information system (EIS) to reengineer and facilitate the administrative process for preparing and teaching distance learning courses in a midsized-to-large university (with 23,000 students). The outcome of the implementation has been a streamlined and efficient process…

  15. Streamlining the Online Course Development Process by Using Project Management Tools

    ERIC Educational Resources Information Center

    Abdous, M'hammed; He, Wu

    2008-01-01

    Managing the design and production of online courses is challenging. Insufficient instructional design and inefficient management often lead to issues such as poor course quality and course delivery delays. In an effort to facilitate, streamline, and improve the overall design and production of online courses, this article discusses how we…

  16. The effects of streamline curvature and swirl on turbulent flows in curved ducts

    NASA Technical Reports Server (NTRS)

    Cheng, Chih-Hsiung; Farokhi, Saeed

    1990-01-01

    A technique for improving the numerical predictions of turbulent flows with the effect of streamline curvature is developed. Separated flows, the flow in a curved duct, and swirling flows are examples of flow fields where streamline curvature plays a dominant role. A comprehensive literature review on the effect of streamline curvature was conducted. New algebraic formulations for the eddy viscosity incorporating the kappa-epsilon turbulence model are proposed to account for various effects of streamline curvature. The loci of flow reversal of the separated flows over various backward-facing steps are employed to test the capability of the proposed turbulence model in capturing the effect of local curvature. The inclusion of the effect of longitudinal curvature in the proposed turbulence model is validated by predicting the distributions of the static pressure coefficients in an S-bend duct and in 180 degree turn-around ducts. The proposed turbulence model embedded with transverse curvature modification is substantiated by predicting the decay of the axial velocities in the confined swirling flows. The numerical predictions of different curvature effects by the proposed turbulence models are also reported.

  17. Zephyr: A secure Internet-based process to streamline engineering procurements using the World Wide Web

    SciTech Connect

    Jordan, C.W.; Cavitt, R.E.; Niven, W.A.; Warren, F.E.; Taylor, S.S.; Sharick, T.M.; Vickers, D.L.; Mitschkowetz, N.; Weaver, R.L.

    1996-08-13

    Lawrence Livermore National Laboratory (LLNL) is piloting an Internet- based paperless process called `Zephyr` to streamline engineering procurements. Major benefits have accrued by using Zephyr in reducing procurement time, speeding the engineering development cycle, facilitating industrial collaboration, and reducing overall costs. Programs at LLNL are benefiting by the efficiencies introduced since implementing Zephyr`s engineering and commerce on the Internet.

  18. Modification of axial compressor streamline program for analysis of engine test data

    NASA Technical Reports Server (NTRS)

    Williams, J. G.

    1979-01-01

    An existing axial compressor streamline analysis computer program to allow input of measured radial pressure and temperature profiles obtained from engine or cascade data is described. The proposed modifications increase the input flexibility and are accomplished without changing the computer program's input format.

  19. 77 FR 50691 - Request for Information (RFI): Guidance on Data Streamlining and Reducing Undue Reporting Burden...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-22

    ... Burden for HHS-Funded HIV Prevention, Treatment, and Care Services Grantees AGENCY: Office of the... among HHS grantees funded to provide HIV prevention, treatment, and care services. DATES: To be assured..., Room 443-H, 200 Independence Ave. SW., Washington, DC 20201. Attention: HIV Data Streamlining....

  20. A computer program to calculate radiating viscous stagnation streamline flow with strong blowing

    NASA Technical Reports Server (NTRS)

    Smith, G. L.; Garrett, L. B.

    1973-01-01

    A computer program (program LEE) has been developed to calculate the fully coupled solution of the radiating viscous stagnation streamline flow with strong blowing. The report describes the digital computer program, including FORTRAN IV listing, flow charts, instructions for the user, and a test case with input and output. Program LEE is available through COSMIC.

  1. 76 FR 79112 - Policies To Promote Rural Radio Service and To Streamline Allotment and Assignment Procedures...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-21

    ... and retention of radio service in and to smaller communities and rural areas. DATES: Oppositions to... COMMISSION 47 CFR Part 73 Policies To Promote Rural Radio Service and To Streamline Allotment and Assignment... for evaluating mutually exclusive proposals for radio service, as well as for applications to change...

  2. STREAMLINING LIFE CYCLE ASSESSMENT (SYSTEMS ANALYSIS BRANCH, SUSTAINABLE TECHNOLOGY DIVISION, NRMRL)

    EPA Science Inventory

    After having completed work on investigating streamlining the life cycle inventory phase of Life Cycle Assessment (LCA), research efforts focused on the impact phase of LCA in the third and final year of this cooperative agreement. A simplified life cycle impact assessment model,...

  3. EBSCO's Usage Consolidation Attempts to Streamline Gathering, Storage, and Reporting of Usage Statistics

    ERIC Educational Resources Information Center

    Remy, Charlie

    2012-01-01

    This paper provides an overview of EBSCO's new Usage Consolidation product designed to streamline the harvesting, storage, and analysis of usage statistics from electronic resources. Strengths and weaknesses of the product are discussed as well as an early beta partner's experience. In the current atmosphere of flat or declining budgets, libraries…

  4. Effects of complex terrain on atmospheric flow: dividing streamline observations and quantification

    NASA Astrophysics Data System (ADS)

    Thompson, Michael; Fernando, Harindra; di Sabatino, Silvana; Leo, Laura; University of Notre Dame Team

    2013-11-01

    As part of the MATERHORN field campaign on atmospheric flow in mountainous terrain, the dividing streamline concept for stratified flow over obstacles was investigated using smoke flow visualization and meteorological measurements. At small Froude numbers (Fr < 1), a stratified flow approaching a mountain either possesses enough kinetic energy to pass over the summit or else flow around the sides, with dividing streamlines separating the two scenarios. An isolated northwestern peak of the Granite Mountain, approximately 60 m in height, was used for the study. Incoming flow velocities and temperature profiles were measured upstream using sonic anemometers and thermocouples mounted on a 32 m tower, while onsite measurements were taken with portable weather stations. Sufficiently strong stratification was developed around 3:00AM GMT, with Froude numbers in the range for dividing streamlines to exist. In the first trial, suitably placed red smoke releases were used and in another trial white smoke was released from a 25 m crane. In both cases well-defined dividing streamlines were observed and its vertical location was at a height about half of the mountain height, which is consistent with theoretical results based on Shepard's formula. This research was supported by the Office of Naval Research (ONR) grant number N00014-11-1-0709.

  5. Expected Benefits of Streamlining Undergraduate Medical Education by Early Commitment to Specific Medical Specialties

    ERIC Educational Resources Information Center

    Benbassat, Jochanan; Baumal, Reuben

    2012-01-01

    Undergraduate medical education is too long; it does not meet the needs for physicians' workforce; and its content is inconsistent with the job characteristics of some of its graduates. In this paper we attempt to respond to these problems by streamlining medical education along the following three reforms. First, high school graduates would be…

  6. The design of the Comet streamliner: An electric land speed record motorcycle

    NASA Astrophysics Data System (ADS)

    McMillan, Ethan Alexander

    The development of the land speed record electric motorcycle streamliner, the Comet, is discussed herein. Its design process includes a detailed literary review of past and current motorcycle streamliners in an effort to highlight the main components of such a vehicle's design, while providing baseline data for performance comparisons. A new approach to balancing a streamliner at low speeds is also addressed, a system henceforth referred to as landing gear, which has proven an effective means for allowing the driver to control the low speed instabilities of the vehicle with relative ease compared to tradition designs. This is accompanied by a dynamic stability analysis conducted on a test chassis that was developed for the primary purpose of understanding the handling dynamics of streamliners, while also providing a test bed for the implementation of the landing gear system and a means to familiarize the driver to the operation and handling of such a vehicle. Data gathered through the use of GPS based velocity tracking, accelerometers, and a linear potentiometer provided a means to validate a dynamic stability analysis of the weave and wobble modes of the vehicle through linearization of a streamliner model developed in the BikeSIM software suite. Results indicate agreement between the experimental data and the simulation, indicating that the conventional recumbent design of a streamliner chassis is in fact highly stable throughout the performance envelope beyond extremely low speeds. A computational fluid dynamics study was also performed, utilized in the development of the body of the Comet to which a series of tests were conducted in order to develop a shape that was both practical to transport and highly efficient. By creating a hybrid airfoil from a NACA 0018 and NACA 66-018, a drag coefficient of 0.1 and frontal area of 0.44 m2 has been found for the final design. Utilizing a performance model based on the proposed vehicle's motor, its rolling resistance, and

  7. Language Acquisition without an Acquisition Device

    ERIC Educational Resources Information Center

    O'Grady, William

    2012-01-01

    Most explanatory work on first and second language learning assumes the primacy of the acquisition phenomenon itself, and a good deal of work has been devoted to the search for an "acquisition device" that is specific to humans, and perhaps even to language. I will consider the possibility that this strategy is misguided and that language…

  8. 78 FR 22263 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-15

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  9. 77 FR 22577 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-16

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  10. 77 FR 29348 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-17

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  11. 77 FR 71420 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-30

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  12. 76 FR 77534 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-13

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  13. 76 FR 61359 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-04

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  14. 77 FR 21981 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-12

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  15. 75 FR 29760 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-27

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  16. 76 FR 40366 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-08

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  17. 76 FR 77229 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-12

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  18. 78 FR 70945 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-27

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  19. 77 FR 26280 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-03

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  20. 77 FR 10529 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-22

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  1. 75 FR 36657 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-28

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  2. 75 FR 17142 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-05

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  3. 78 FR 46334 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-31

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  4. 75 FR 30405 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-01

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  5. 77 FR 38816 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-29

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  6. 75 FR 70004 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-16

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  7. 77 FR 74662 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-17

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  8. 77 FR 52738 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-30

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  9. 78 FR 69680 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-20

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  10. 77 FR 77078 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-31

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  11. 75 FR 65631 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-26

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  12. 77 FR 53202 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-31

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  13. 75 FR 32779 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-09

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  14. 77 FR 41788 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-16

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  15. 77 FR 65190 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-25

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  16. 77 FR 70439 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-26

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  17. 76 FR 35893 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-20

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  18. 77 FR 29347 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-17

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  19. 78 FR 40739 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-08

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  20. 77 FR 73466 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-10

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  1. 77 FR 26759 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-07

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  2. 76 FR 62807 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-11

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  3. 77 FR 64338 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-19

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  4. 78 FR 7783 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-04

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  5. 76 FR 25693 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-05

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  6. 75 FR 66763 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-29

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  7. 77 FR 38631 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-28

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  8. 75 FR 78705 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-16

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  9. 76 FR 66719 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-27

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  10. 77 FR 31855 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-30

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  11. 77 FR 64993 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-24

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  12. 78 FR 7430 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-01

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  13. 78 FR 52530 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-23

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  14. 76 FR 28435 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-17

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  15. 75 FR 16808 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-02

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  16. 77 FR 58834 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-24

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  17. 77 FR 18246 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-27

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  18. 77 FR 42312 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-18

    ... standards enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies...

  19. 77 FR 47070 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-07

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  20. 75 FR 57023 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-17

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  1. 77 FR 30535 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-23

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  2. 77 FR 69623 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-20

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  3. 77 FR 52737 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-30

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  4. 77 FR 1490 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-10

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  5. 78 FR 34384 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-07

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  6. 78 FR 38715 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-27

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  7. Aerofoil testing in a self-streamlining flexible walled wind tunnel. Ph.D. Thesis - Jul. 1987

    NASA Technical Reports Server (NTRS)

    Lewis, Mark Charles

    1988-01-01

    Two-dimensional self-streamlining flexible walled test sections eliminate, as far as experimentally possible, the top and bottom wall interference effects in transonic airfoil testing. The test section sidewalls are rigid, while the impervious top and bottom walls are flexible and contoured to streamline shapes by a system of jacks, without reference to the airfoil model. The concept of wall contouring to eliminate or minimize test section boundary interference in 2-D testing was first demonstrated by NPL in England during the early 40's. The transonic streamlining strategy proposed, developed and used by NPL has been compared with several modern strategies. The NPL strategy has proved to be surprisingly good at providing a wall interference-free test environment, giving model performance indistinguishable from that obtained using the modern strategies over a wide range of test conditions. In all previous investigations the achievement of wall streamlining in flexible walled test sections has been limited to test sections up to those resulting in the model's shock just extending to a streamlined wall. This work however, has also successfully demonstrated the feasibility of 2-D wall streamlining at test conditions where both model shocks have reached and penetrated through their respective flexible walls. Appropriate streamlining procedures have been established and are uncomplicated, enabling flexible walled test sections to cope easily with these high transonic flows.

  8. The impact of a streamlined funding application process on application time: two cross-sectional surveys of Australian researchers

    PubMed Central

    Barnett, Adrian G; Graves, Nicholas; Clarke, Philip; Herbert, Danielle

    2015-01-01

    Objective To examine if streamlining a medical research funding application process saved time for applicants. Design Cross-sectional surveys before and after the streamlining. Setting The National Health and Medical Research Council (NHMRC) of Australia. Participants Researchers who submitted one or more NHMRC Project Grant applications in 2012 or 2014. Main outcome measures Average researcher time spent preparing an application and the total time for all applications in working days. Results The average time per application increased from 34 working days before streamlining (95% CI 33 to 35) to 38 working days after streamlining (95% CI 37 to 39; mean difference 4 days, bootstrap p value <0.001). The estimated total time spent by all researchers on applications after streamlining was 614 working years, a 67-year increase from before streamlining. Conclusions Streamlined applications were shorter but took longer to prepare on average. Researchers may be allocating a fixed amount of time to preparing funding applications based on their expected return, or may be increasing their time in response to increased competition. Many potentially productive years of researcher time are still being lost to preparing failed applications. PMID:25596201

  9. EARLY SYNTACTIC ACQUISITION.

    ERIC Educational Resources Information Center

    KELLEY, K.L.

    THIS PAPER IS A STUDY OF A CHILD'S EARLIEST PRETRANSFORMATIONAL LANGUAGE ACQUISITION PROCESSES. A MODEL IS CONSTRUCTED BASED ON THE ASSUMPTIONS (1) THAT SYNTACTIC ACQUISITION OCCURS THROUGH THE TESTING OF HYPOTHESES REFLECTING THE INITIAL STRUCTURE OF THE ACQUISITION MECHANISM AND THE LANGUAGE DATA TO WHICH THE CHILD IS EXPOSED, AND (2) THAT…

  10. The development of a self-streamlining flexible walled transonic test section

    NASA Technical Reports Server (NTRS)

    Goodyer, M. J.; Wolf, S. W. D.

    1980-01-01

    This design eliminates the uncertainties in data from conventional transonic test sections. Sidewalls are rigid, and the flexible floor and ceiling are positioned by motorized jacks controlled by on-line computer to minimize run times. The tunnel-computer combination is self-streamlining without reference to the model. Data is taken from the model only when the walls are good streamlines, and is corrected for the small, known but inevitable residual interferences. Two-dimensional validation testing in the Mach range up to about 0.85 where the walls are just supercritical shows good agreement with reference data using a height:chord ratio of 1.5. Techniques are under development to extend Mach number above 1. This work has demonstrated the feasibility of almost eliminating wall interferences, improving flow quality, and reducing power requirements or increasing Reynolds number. Extensions to three-dimensional testing are outlined.

  11. A note on problems in 3D boundary layer computations in streamline coordinates

    NASA Astrophysics Data System (ADS)

    Scholtysik, M.; Bettelini, M.; Fanneløp, T. K.

    1994-01-01

    Turbulent boundary layers with convergent and divergent external streamlines over a flat plate in the neighbourhood of a plane of symmetry have been computed using a finite-difference method based on streamline coordinates. While the results for the divergent case are generally satisfactory, error growth has been observed for the convergent flowfield. This is most pronounced near the lateral boundary of the computational domain, but also occurs in the plane of symmetry. As an ad-hoc engineering solution, a modified and more restrictive definition of the domain of dependence is proposed, which eliminates the part of the computational domain where the largest error growth occurs. The observed tendency to instability in the convergent case is confirmed by a simplified stability analysis after von Neumann of the uncoupled governing equations.

  12. Virtue Acquisition: The Paradox of Striving

    ERIC Educational Resources Information Center

    Snow, Nancy

    2016-01-01

    Aristotelian-inspired accounts of virtue acquisition stress guided practice and habituated action to develop virtue. This emphasis on action can lead to the "paradox of striving". The paradox occurs when we try too hard to act well and thereby spoil our efforts. I identify four forms of striving--forcing, impulsivity, overthinking, and…

  13. Streamlining behaviour of the red urchin Strongylocentrotus franciscanus in response to flow.

    PubMed

    Stewart, Hannah L; Britton-Simmons, Kevin H

    2011-08-15

    This work was motivated by subtidal observations of red urchins (Strongylocentrotus franciscanus) moving their spines into streamlined positions as water current increased in the field. Trials in a flume across flow speeds from 0 to 65 cm s(-1) enabled us to observe the change in overall shape of the urchins and quantify the decrease in spine angle that occurred as flow speeds increased. The effect of this behaviour on drag and lift was measured with physical models made from urchin tests with spines in the `up' position (typical in stagnant and slow velocities) and in the `down' position (typical of posture in high velocities). Streamlining spines decreased the drag, but increased the lift experienced by urchin models at flow speeds between 10 and 40 cm s(-1), current velocities that are commonly encountered by these animals in the field in Washington, USA. Total force (combination of drag and lift) was similar for `up' and `down' models at all flow speeds, lift comprising the majority of the force for `down' models, and drag slightly higher for `up' models. Live urchins in the field routinely adopt a streamlined `down' posture in flow, suggesting that they may be better able to cope with lift than drag. This behaviour, although affecting hydrodynamic forces and enabling S. franciscanus to remain attached to the substratum in high currents, may lead to reduced capture of drift kelp, which is entrapped on upright spines and then eaten, delivery of which is positively related to flow speed. Urchins living in deep subtidal habitats rely on drift kelp capture but must stay attached to the substratum to be successful in a habitat. Therefore, this streamlining behaviour may be an important factor enabling S. franciscanus to persist in deep, high-current areas. PMID:21795560

  14. 48 CFR 1480.302 - Restrictions on use of the Buy Indian Act.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Buy Indian Act. 1480.302 Section 1480.302 Federal Acquisition Regulations System DEPARTMENT OF THE INTERIOR INDIAN AFFAIRS SUPPLEMENT ACQUISITIONS UNDER THE BUY INDIAN ACT Applicability 1480.302 Restrictions on use of the Buy Indian Act. (a) IA must not use the authority of the Buy Indian Act and...

  15. Effect of nose shape on three-dimensional stagnation region streamlines and heating rates

    NASA Technical Reports Server (NTRS)

    Hassan, Basil; Dejarnette, Fred R.; Zoby, E. V.

    1991-01-01

    A new method for calculating the three-dimensional inviscid surface streamlines and streamline metrics using Cartesian coordinates and time as the independent variable of integration has been developed. The technique calculates the streamline from a specified point on the body to a point near the stagnation point by using a prescribed pressure distribution in the Euler equations. The differential equations, which are singular at the stagnation point, are of the two point boundary value problem type. Laminar heating rates are calculated using the axisymmetric analog concept for three-dimensional boundary layers and approximate solutions to the axisymmetric boundary layer equations. Results for elliptic conic forebody geometries show that location of the point of maximum heating depends on the type of conic in the plane of symmetry and the angle of attack, and that this location is in general different from the stagnation point. The new method was found to give smooth predictions of heat transfer in the nose region where previous methods gave oscillatory results.

  16. Virtual genomes in flux: an interplay of neutrality and adaptability explains genome expansion and streamlining.

    PubMed

    Cuypers, Thomas D; Hogeweg, Paulien

    2012-01-01

    The picture that emerges from phylogenetic gene content reconstructions is that genomes evolve in a dynamic pattern of rapid expansion and gradual streamlining. Ancestral organisms have been estimated to possess remarkably rich gene complements, although gene loss is a driving force in subsequent lineage adaptation and diversification. Here, we study genome dynamics in a model of virtual cells evolving to maintain homeostasis. We observe a pattern of an initial rapid expansion of the genome and a prolonged phase of mutational load reduction. Generally, load reduction is achieved by the deletion of redundant genes, generating a streamlining pattern. Load reduction can also occur as a result of the generation of highly neutral genomic regions. These regions can expand and contract in a neutral fashion. Our study suggests that genome expansion and streamlining are generic patterns of evolving systems. We propose that the complex genotype to phenotype mapping in virtual cells as well as in their biological counterparts drives genome size dynamics, due to an emerging interplay between adaptation, neutrality, and evolvability. PMID:22234601

  17. A breath of fresh air: EPA`s more flexible approach to the Clean Air Act

    SciTech Connect

    Curreri, J.A.

    1996-05-01

    This article highlights the changes in the Clean Air Act rules as defined by the USEPA. The major changes discussed include the following: definition of a `major source`; streamlined Title V Permits; less detailed descriptions; permit revisions may be reduced; periodic and enhanced monitoring; more practical requirements; case-by-case MACT standards.

  18. 48 CFR 25.1101 - Acquisition of supplies.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ...) Insert the provision at 52.225-7, Waiver of Buy American Act for Civil Aircraft and Related Articles, in solicitations for civil aircraft and related articles (see 25.407), if the acquisition value is less than...

  19. Streamlined approach for environmental restoration plan for corrective action unit 430, buried depleted uranium artillery round No. 1, Tonopah test range

    SciTech Connect

    1996-09-01

    This plan addresses actions necessary for the restoration and closure of Corrective Action Unit (CAU) No. 430, Buried Depleted Uranium (DU) Artillery Round No. 1 (Corrective Action Site No. TA-55-003-0960), a buried and unexploded W-79 Joint Test Assembly (JTA) artillery test projectile with high explosives (HE), at the U.S. Department of Energy, Nevada Operations Office (DOE/NV) Tonopah Test Range (TTR) in south-central Nevada. It describes activities that will occur at the site as well as the steps that will be taken to gather adequate data to obtain a notice of completion from Nevada Division of Environmental Protection (NDEP). This plan was prepared under the Streamlined Approach for Environmental Restoration (SAFER) concept, and it will be implemented in accordance with the Federal Facility Agreement and Consent Order (FFACO) and the Resource Conservation and Recovery Act (RCRA) Industrial Sites Quality Assurance Project Plan.

  20. 48 CFR 25.1102 - Acquisition of construction.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... construction. 25.1102 Section 25.1102 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION... construction. When using funds other than those appropriated under the American Recovery and Reinvestment Act..., Buy American—Construction Materials, in solicitations and contracts for construction that is...

  1. 48 CFR 25.1102 - Acquisition of construction.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... construction. 25.1102 Section 25.1102 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION... construction. When using funds other than those appropriated under the American Recovery and Reinvestment Act..., Buy American Act—Construction Materials, in solicitations and contracts for construction that...

  2. 48 CFR 25.1102 - Acquisition of construction.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... construction. 25.1102 Section 25.1102 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION... construction. When using funds other than those appropriated under the American Recovery and Reinvestment Act..., Buy American Act—Construction Materials, in solicitations and contracts for construction that...

  3. 48 CFR 25.1102 - Acquisition of construction.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... construction. 25.1102 Section 25.1102 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION... construction. When using funds other than those appropriated under the American Recovery and Reinvestment Act..., Buy American Act—Construction Materials, in solicitations and contracts for construction that...

  4. 48 CFR 25.1102 - Acquisition of construction.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... construction. 25.1102 Section 25.1102 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION... construction. When using funds other than those appropriated under the American Recovery and Reinvestment Act..., Buy American Act—Construction Materials, in solicitations and contracts for construction that...

  5. 2 CFR 176.90 - Acquisitions covered under international agreements.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 2 Grants and Agreements 1 2012-01-01 2012-01-01 false Acquisitions covered under international... American Recovery and Reinvestment Act of 2009 § 176.90 Acquisitions covered under international agreements... applied in a manner consistent with U.S. obligations under international agreements. (a) The Buy...

  6. 75 FR 77733 - Federal Acquisition Regulation; Preventing Abuse of Interagency Contracts

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-13

    ... Federal Acquisition Regulation; Preventing Abuse of Interagency Contracts AGENCIES: Department of Defense... Authorization Act (NDAA) for Fiscal Year 2009 requirements for preventing abuse of interagency contracts....

  7. Streamlined Approach for Environmental Restoration Plan for Corrective Action Unit 496: Buried Rocket Site, Antelope Lake, Tonopah Test Range

    SciTech Connect

    U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office; Bechtel Nevada

    2004-05-01

    This Streamlined Approach for Environmental Restoration (SAFER) plan details the activities necessary to close Corrective Action Unit 496: Buried Rocket Site, Antelope Lake. CAU 496 consists of one site located at the Tonopah Test Range, Nevada.

  8. 48 CFR 352.224-70 - Privacy Act.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 4 2010-10-01 2010-10-01 false Privacy Act. 352.224-70 Section 352.224-70 Federal Acquisition Regulations System HEALTH AND HUMAN SERVICES CLAUSES AND FORMS SOLICITATION PROVISIONS AND CONTRACT CLAUSES Texts of Provisions and Clauses 352.224-70 Privacy Act....

  9. 48 CFR 702.170-7 - Foreign Assistance Act.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 5 2010-10-01 2010-10-01 false Foreign Assistance Act. 702.170-7 Section 702.170-7 Federal Acquisition Regulations System AGENCY FOR INTERNATIONAL DEVELOPMENT GENERAL DEFINITIONS OF WORDS AND TERMS Definitions 702.170-7 Foreign Assistance Act....

  10. 48 CFR 702.170-7 - Foreign Assistance Act.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 5 2014-10-01 2014-10-01 false Foreign Assistance Act. 702.170-7 Section 702.170-7 Federal Acquisition Regulations System AGENCY FOR INTERNATIONAL DEVELOPMENT GENERAL DEFINITIONS OF WORDS AND TERMS Definitions 702.170-7 Foreign Assistance Act....

  11. 48 CFR 1552.239-70 - Rehabilitation act notice.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 6 2012-10-01 2012-10-01 false Rehabilitation act notice... Rehabilitation act notice. As prescribed in 1523.7003(a), insert the following clause. Rehabilitation Act Notice (OCT 2000) (a) EPA has a legal obligation under the Rehabilitation Act of 1973, 29 U.S.C. 791,...

  12. 48 CFR 1552.239-70 - Rehabilitation act notice.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 6 2011-10-01 2011-10-01 false Rehabilitation act notice... Rehabilitation act notice. As prescribed in 1523.7003(a), insert the following clause. Rehabilitation Act Notice (OCT 2000) (a) EPA has a legal obligation under the Rehabilitation Act of 1973, 29 U.S.C. 791,...

  13. Excessive acquisition in hoarding.

    PubMed

    Frost, Randy O; Tolin, David F; Steketee, Gail; Fitch, Kristin E; Selbo-Bruns, Alexandra

    2009-06-01

    Compulsive hoarding (the acquisition of and failure to discard large numbers of possessions) is associated with substantial health risk, impairment, and economic burden. However, little research has examined separate components of this definition, particularly excessive acquisition. The present study examined acquisition in hoarding. Participants, 878 self-identified with hoarding and 665 family informants (not matched to hoarding participants), completed an Internet survey. Among hoarding participants who met criteria for clinically significant hoarding, 61% met criteria for a diagnosis of compulsive buying and approximately 85% reported excessive acquisition. Family informants indicated that nearly 95% exhibited excessive acquisition. Those who acquired excessively had more severe hoarding; their hoarding had an earlier onset and resulted in more psychiatric work impairment days; and they experienced more symptoms of obsessive-compulsive disorder, depression, and anxiety. Two forms of excessive acquisition (buying and free things) each contributed independent variance in the prediction of hoarding severity and related symptoms. PMID:19261435

  14. Excessive Acquisition in Hoarding

    PubMed Central

    Frost, Randy O.; Tolin, David F.; Steketee, Gail; Fitch, Kristin E.; Selbo-Bruns, Alexandra

    2009-01-01

    Compulsive hoarding (the acquisition of and failure to discard large numbers of possessions) is associated with substantial health risk, impairment, and economic burden. However, little research has examined separate components of this definition, particularly excessive acquisition. The present study examined acquisition in hoarding. Participants, 878 self-identified with hoarding and 665 family informants (not matched to hoarding participants), completed an internet survey. Among hoarding participants who met criteria for clinically significant hoarding, 61% met criteria for a diagnosis of compulsive buying and approximately 85% reported excessive acquisition. Family informants indicated that nearly 95% exhibited excessive acquisition. Those who acquired excessively had more severe hoarding; their hoarding had an earlier onset and resulted in more psychiatric work impairment days; and they experienced more symptoms of obsessive-compulsive disorder, depression, and anxiety. Two forms of excessive acquisition (buying and free things) each contributed independent variance in the prediction of hoarding severity and related symptoms. PMID:19261435

  15. 48 CFR 752.225-9 - Buy American Act-Trade Agreements Act-Balance of Payments Program.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 5 2011-10-01 2011-10-01 false Buy American Act-Trade Agreements Act-Balance of Payments Program. 752.225-9 Section 752.225-9 Federal Acquisition Regulations... CLAUSES Texts of Provisions and Clauses 752.225-9 Buy American Act—Trade Agreements Act—Balance...

  16. 48 CFR 752.225-9 - Buy American Act-Trade Agreements Act-Balance of Payments Program.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 5 2014-10-01 2014-10-01 false Buy American Act-Trade Agreements Act-Balance of Payments Program. 752.225-9 Section 752.225-9 Federal Acquisition Regulations... CLAUSES Texts of Provisions and Clauses 752.225-9 Buy American Act—Trade Agreements Act—Balance...

  17. 48 CFR 752.225-9 - Buy American Act-Trade Agreements Act-Balance of Payments Program.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 5 2012-10-01 2012-10-01 false Buy American Act-Trade Agreements Act-Balance of Payments Program. 752.225-9 Section 752.225-9 Federal Acquisition Regulations... CLAUSES Texts of Provisions and Clauses 752.225-9 Buy American Act—Trade Agreements Act—Balance...

  18. 48 CFR 752.225-9 - Buy American Act-Trade Agreements Act-Balance of Payments Program.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 5 2010-10-01 2010-10-01 false Buy American Act-Trade Agreements Act-Balance of Payments Program. 752.225-9 Section 752.225-9 Federal Acquisition Regulations... CLAUSES Texts of Provisions and Clauses 752.225-9 Buy American Act—Trade Agreements Act—Balance...

  19. 48 CFR 752.225-9 - Buy American Act-Trade Agreements Act-Balance of Payments Program.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 5 2013-10-01 2013-10-01 false Buy American Act-Trade Agreements Act-Balance of Payments Program. 752.225-9 Section 752.225-9 Federal Acquisition Regulations... CLAUSES Texts of Provisions and Clauses 752.225-9 Buy American Act—Trade Agreements Act—Balance...

  20. 76 FR 66949 - Privacy Act of 1974; Notification of the Establishment of a Privacy Act System of Records, HUD...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-28

    ... Records About Individuals, dated June 25, 1993 (58 FR 36075, July 2, 1993). Authority: 5 U.S.C. 552a, 88... URBAN DEVELOPMENT Privacy Act of 1974; Notification of the Establishment of a Privacy Act System of... offices, to store and manage HUD acquisition-related data from acquisition planning through...

  1. New Innovations and Best Practices under the Workforce Investment Act: Field Hearing before the Subcommittee on Higher Education, Lifelong Learning, and Competitiveness Committee on Education and Labor, U.S. House of Representatives (May 29, 2009)

    ERIC Educational Resources Information Center

    US House of Representatives, 2009

    2009-01-01

    This paper presents the Higher Education, Lifelong Learning, and Competitiveness Subcommittee's fifth hearing in preparation for the reauthorization of the Workforce Investment Act. The last time the Workforce Investment Act reauthorized was in 1998. The Workforce Investment Act was designed to streamline and coordinate job training programs. It…

  2. ACTS TDMA network control

    NASA Astrophysics Data System (ADS)

    Inukai, T.; Campanella, S. J.

    This paper presents basic network control concepts for the Advanced Communications Technology Satellite (ACTS) System. Two experimental systems, called the low-burst-rate and high-burst-rate systems, along with ACTS ground system features, are described. The network control issues addressed include frame structures, acquisition and synchronization procedures, coordinated station burst-time plan and satellite-time plan changes, on-board clock control based on ground drift measurements, rain fade control by means of adaptive forward-error-correction (FEC) coding and transmit power augmentation, and reassignment of channel capacities on demand. The NASA ground system, which includes a primary station, diversity station, and master control station, is also described.

  3. HR, Streamlined

    ERIC Educational Resources Information Center

    Ramaswami, Rama

    2008-01-01

    Human Resources (HR) administrators are finding that as software modules are installed to automate various processes, they have more time to focus on strategic objectives. And as compliance with affirmative action and other employment regulations comes under increasing scrutiny, HR staffers are finding that software can deliver and track data with…

  4. A model equation for the joint distribution of the length and velocity difference of streamline segments in turbulent flows

    NASA Astrophysics Data System (ADS)

    Schaefer, P.; Gampert, M.; Peters, N.

    2013-11-01

    Streamlines recently received attention as natural geometries of turbulent flow fields. Similar to dissipation elements in scalar fields, streamlines are segmented into smaller subunits based on local extreme points of the absolute value of the velocity field u along the streamline coordinate s, i.e., points where the projected gradient in streamline direction us = 0. Then, streamline segments are parameterized using their arclength l between two neighboring extrema and the velocity difference Δ at the extrema. Both parameters are statistical variables and streamline segments are characterized by the joint probability density function (jpdf) P(l, Δ). Based on a previously formulated model for the marginal pdf of the arclength, P(l), which contains terms that account for slow changes as well as fast changes of streamline segments, a model for the jpdf is formulated. The jpdf's, when normalized with the mean length, lm, and the standard deviation of the velocity difference σ, obtained from two different direct numerical simulations (DNS) cases of homogeneous isotropic decaying and forced turbulence at Taylor based Reynolds number of Reλ = 116 and Reλ = 206, respectively, turn out to be almost Reynolds number independent. The steady model solution is compared with the normalized jpdf's obtained from DNS and it is found to be in good agreement. Special attention is paid to the intrinsic asymmetry of the jpdf with respect to the mean length of positive and negative streamline segments, where due to the kinematic stretching of positive segments and compression of negative ones, the mean length of positive segments turns out to be larger than the mean length of negative ones. This feature is reproduced by the model and the ratio of the two length scales, which turns out to be an almost Reynolds number independent, dimensionless quantity, is well reproduced. Finally, a relation between the kinetic asymmetry of streamline segments and the dynamic asymmetry of the pdf

  5. Coring Sample Acquisition Tool

    NASA Technical Reports Server (NTRS)

    Haddad, Nicolas E.; Murray, Saben D.; Walkemeyer, Phillip E.; Badescu, Mircea; Sherrit, Stewart; Bao, Xiaoqi; Kriechbaum, Kristopher L.; Richardson, Megan; Klein, Kerry J.

    2012-01-01

    A sample acquisition tool (SAT) has been developed that can be used autonomously to sample drill and capture rock cores. The tool is designed to accommodate core transfer using a sample tube to the IMSAH (integrated Mars sample acquisition and handling) SHEC (sample handling, encapsulation, and containerization) without ever touching the pristine core sample in the transfer process.

  6. Acquisition of teleological descriptions

    NASA Astrophysics Data System (ADS)

    Franke, David W.

    1992-03-01

    Teleology descriptions capture the purpose of an entity, mechanism, or activity with which they are associated. These descriptions can be used in explanation, diagnosis, and design reuse. We describe a technique for acquiring teleological descriptions expressed in the teleology language TeD. Acquisition occurs during design by observing design modifications and design verification. We demonstrate the acquisition technique in an electronic circuit design.

  7. 48 CFR 25.504-3 - FTA/Israeli Trade Act.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 1 2011-10-01 2011-10-01 false FTA/Israeli Trade Act. 25.504-3 Section 25.504-3 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION SOCIOECONOMIC PROGRAMS FOREIGN ACQUISITION Evaluating Foreign Offers-Supply Contracts 25.504-3 FTA/Israeli...

  8. 48 CFR 25.504-3 - FTA/Israeli Trade Act.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 1 2012-10-01 2012-10-01 false FTA/Israeli Trade Act. 25.504-3 Section 25.504-3 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION SOCIOECONOMIC PROGRAMS FOREIGN ACQUISITION Evaluating Foreign Offers-Supply Contracts 25.504-3 FTA/Israeli...

  9. 48 CFR 25.504-3 - FTA/Israeli Trade Act.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 1 2014-10-01 2014-10-01 false FTA/Israeli Trade Act. 25.504-3 Section 25.504-3 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION SOCIOECONOMIC PROGRAMS FOREIGN ACQUISITION Evaluating Foreign Offers-Supply Contracts 25.504-3 FTA/Israeli...

  10. 48 CFR 25.504-3 - FTA/Israeli Trade Act.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 1 2013-10-01 2013-10-01 false FTA/Israeli Trade Act. 25.504-3 Section 25.504-3 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION SOCIOECONOMIC PROGRAMS FOREIGN ACQUISITION Evaluating Foreign Offers-Supply Contracts 25.504-3 FTA/Israeli...

  11. Methodology for the Design of Streamline-Traced External-Compression Supersonic Inlets

    NASA Technical Reports Server (NTRS)

    Slater, John W.

    2014-01-01

    A design methodology based on streamline-tracing is discussed for the design of external-compression, supersonic inlets for flight below Mach 2.0. The methodology establishes a supersonic compression surface and capture cross-section by tracing streamlines through an axisymmetric Busemann flowfield. The compression system of shock and Mach waves is altered through modifications to the leading edge and shoulder of the compression surface. An external terminal shock is established to create subsonic flow which is diffused in the subsonic diffuser. The design methodology was implemented into the SUPIN inlet design tool. SUPIN uses specified design factors to design the inlets and computes the inlet performance, which includes the flow rates, total pressure recovery, and wave drag. A design study was conducted using SUPIN and the Wind-US computational fluid dynamics code to design and analyze the properties of two streamline-traced, external-compression (STEX) supersonic inlets for Mach 1.6 freestream conditions. The STEX inlets were compared to axisymmetric pitot, two-dimensional, and axisymmetric spike inlets. The STEX inlets had slightly lower total pressure recovery and higher levels of total pressure distortion than the axisymmetric spike inlet. The cowl wave drag coefficients of the STEX inlets were 20% of those for the axisymmetric spike inlet. The STEX inlets had external sound pressures that were 37% of those of the axisymmetric spike inlet, which may result in lower adverse sonic boom characteristics. The flexibility of the shape of the capture cross-section may result in benefits for the integration of STEX inlets with aircraft.

  12. Streamlined hard beds formed by palaeo-ice streams: A review

    NASA Astrophysics Data System (ADS)

    Krabbendam, Maarten; Eyles, Nick; Putkinen, Niko; Bradwell, Tom; Arbelaez-Moreno, Lina

    2016-06-01

    Fast-flowing ice streams occur within modern ice sheets and also operated in Pleistocene ice sheets. The reconstruction of palaeo-ice streams normally relies on the mapping of mega-scale glacial lineations (MSGLs) and drumlins composed of soft sediment, mainly till. Analysis of new satellite imagery and digital terrain models, demonstrates the presence of large fields of kilometre-scale glacial lineations comprising rock drumlins, megagrooves and megaridges. In this paper we describe and analyse a number of such 'hard-bed' landform systems from the former Laurentide and British-Irish ice sheets, occurring in a variety of palaeo-ice stream settings. These are attributed to erosion of crystalline and sedimentary rock below fast flowing ice streams. Bedrock properties such as hardness, fracture spacing and bedding and their orientation with respect to ice flow have a profound effect on the occurrence and character of elongate rock bedforms. Elongate streamlined forms on hard crystalline rock, as on the Canadian Shield, only form under special circumstances; in contrast, sedimentary strata are highly susceptible to form streamlined hard beds, specifically if bedrock strike is parallel to ice flow. Large-scale elongate rock bedforms are erosional in origin, formed by preferentially focused abrasion or by lateral plucking, depending on bedrock type. Many palaeo-ice stream footprints previously mapped in the Laurentide Ice Sheet on the basis of soft-bed bedforms are shown to be significantly larger, extending up-ice across sedimentary strata and onto Precambrian crystalline rocks. Hard-bed streamlined forms further show that ice streaming does not necessitate a deformable bed, but can equally occur on smooth hard beds.

  13. Balancing Acts

    MedlinePlus

    ... Current Issue Past Issues Special Section: Focus on Communication Balancing Acts Past Issues / Fall 2008 Table of ... from the National Institute on Deafness and Other Communication Disorders (NIDCD). It involves simulated trips down the ...

  14. Acting Atoms.

    ERIC Educational Resources Information Center

    Farin, Susan Archie

    1997-01-01

    Describes a fun game in which students act as electrons, protons, and neutrons. This activity is designed to help students develop a concrete understanding of the abstract concept of atomic structure. (DKM)

  15. ACT Test

    MedlinePlus

    ... this page helpful? Also known as: ACT; Activated Coagulation Time Formal name: Activated Clotting Time Related tests: ... in the blood called platelets and proteins called coagulation factors are activated in a sequence of steps ...

  16. Streamlined mean field variational Bayes for longitudinal and multilevel data analysis.

    PubMed

    Lee, Cathy Yuen Yi; Wand, Matt P

    2016-07-01

    Streamlined mean field variational Bayes algorithms for efficient fitting and inference in large models for longitudinal and multilevel data analysis are obtained. The number of operations is linear in the number of groups at each level, which represents a two orders of magnitude improvement over the naïve approach. Storage requirements are also lessened considerably. We treat models for the Gaussian and binary response situations. Our algorithms allow the fastest ever approximate Bayesian analyses of arbitrarily large longitudinal and multilevel datasets, with little degradation in accuracy compared with Markov chain Monte Carlo. The modularity of mean field variational Bayes allows relatively simple extension to more complicated scenarios. PMID:27214238

  17. Theoretical Calculations on Sediment Transport on Titan, and the Possible Production of Streamlined Forms

    NASA Technical Reports Server (NTRS)

    Burr, D. M.; Emery, J. P.; Lorenz, R. D.

    2005-01-01

    The Cassini Imaging Science System (ISS) has been returning images of Titan, along with other Saturnian satellites. Images taken through the 938 nm methane window see down to Titan's surface. One of the purposes of the Cassini mission is to investigate possible fluid cycling on Titan. Lemniscate features shown recently and radar evidence of surface flow prompted us to consider theoretically the creation by methane fluid flow of streamlined forms on Titan. This follows work by other groups in theoretical consideration of fluid motion on Titan's surface.

  18. Stripping Away the Forest; Sweden's Glacially Streamlined Landscape Evaluated through Lidar

    NASA Astrophysics Data System (ADS)

    Dowling, T.; Spagnolo, M.; Moller, P.

    2014-12-01

    The newly available Swedish National Height Model (SNHM) is a 2.0 m horizontal, and 0.1 m vertical resolution digital elevation model (DEM) that is free at the point of use for researchers based at Swedish institutions. With coverage currently at ~80% of the country and due to be completed by 2015 this spatially extensive, high resolution dataset has opened up new avenues of research for Quaternary geology in the country. The work presented here utilises the SNHM to map and evaluate more than 10,000 glacially streamlined landforms in the south-east of Sweden. The subsequently extracted morphological variables of length, width and height are then used to investiagte three areas; to test recent conclusions drawn from the glacially streamlined landscapes of Great Britain and North America/Canada, to assess the impact of different core types on the morphological expression of said features and to attempt to calculate which morphological variable best accounts for the variability seen in the dataset. It is found that in common with drumlins found in the British Isles, and elsewhere, their characteristics can be described by a log-normal distribution. However the long tail of the features characteristic distributions can cause problems for many of the commonly applied statistical methods of evaluation. Furthermore a re-appraisal of some conclusions drawn by previous works as to the presence of a fundamental scaling law in streamlined feature elongation is necessary due to evidence gathered here. Additionally; based on a limited sample size it has been found that it is not possible to differentiate a streamlined landform's core type based on their morphological characteristics alone. Larger 'known'-core data sets may be able to do so, based upon the length of a feature for example, however the sample size here was not sufficient to allow significant differences to come to the fore should they exist. And lastly, the extracted variable 'height' was found to account for the

  19. Fast Ensemble Kalman Filter for Model Calibration with Streamline-Assisted Pseudo Forecasts

    NASA Astrophysics Data System (ADS)

    King, M. J.; Khodabakhshi, M.; Jafarpour, B.

    2011-12-01

    Characterization and modeling of subsurface flow and transport properties is critical for modeling, performance prediction and design of a number of important environmental and energy applications, including groundwater flow and contaminant transport, energy recovery from geothermal and hydrocarbon reservoirs, and geologic storage of CO2. Inverse modeling is typically applied to infer hydraulic rock properties from available static and dynamic measurements. Data sparsity and nonlinearity with respect to model parameters often result in significant uncertainty and solution non-uniqueness in solving the resulting inverse problems. Stochastic methods have become increasingly popular for dealing with inverse modeling solution non-uniqueness and uncertainty quantification. In particular, the ensemble Kalman filter (EnKF) has been widely applied for stochastic characterization of aquifer hydraulic properties from dynamic field measurements. For practical applications, where large-scale models are used, the computational cost of the forward simulation severely constrains the number of model realizations that can be included in ensemble predictions. Consequently, the statistics computed from a limited-size ensemble becomes spurious, making the resulting EnKF model updates unreliable. Localization and local analysis methods have been introduced to mitigate the effect of spurious correlations by reducing or removing the unphysical numerical correlations between model parameters (and/or states) and observations at distant locations. While these methods have proven useful, they require prior tuning of localization parameters and do not address the impact of small ensemble size approximation on the existing physical correlations between parameters and close-by observations. An alternative approach to localization is to approximate the correct statistics from computationally efficient surrogate models. Here, we present an efficient streamline-based pseudo forecast method for

  20. A Method for Determining the Rate of Heat Transfer from a Wing or Streamline Body

    NASA Technical Reports Server (NTRS)

    Frick, Charles W; Mccullough, George B

    1945-01-01

    A method for calculating the rate of heat transfer from the surface of an airfoil or streamline body is presented. A comparison with the results of an experimental investigation indicates that the accuracy of the method is good. This method may be used to calculate the heat supply necessary for heat de-icing or in ascertaining the heat loss from the fuselage of an aircraft operating at great altitude. To illustrate the method, the total rate of heat transfer from an airfoil is calculated and compared with the experimental results.

  1. A Study of Two-Equation Turbulence Models on the Elliptic Streamline Flow

    NASA Technical Reports Server (NTRS)

    Blaisdell, Gregory A.; Qin, Jim H.; Shariff, Karim; Rai, Man Mohan (Technical Monitor)

    1995-01-01

    Several two-equation turbulence models are compared to data from direct numerical simulations (DNS) of the homogeneous elliptic streamline flow, which combines rotation and strain. The models considered include standard two-equation models and models with corrections for rotational effects. Most of the rotational corrections modify the dissipation rate equation to account for the reduced dissipation rate in rotating turbulent flows, however, the DNS data shows that the production term in the turbulent kinetic energy equation is not modeled correctly by these models. Nonlinear relations for the Reynolds stresses are considered as a means of modifying the production term. Implications for the modeling of turbulent vortices will be discussed.

  2. 16 CFR 802.71 - Acquisitions by gift, intestate succession or devise, or by irrevocable trust.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 16 Commercial Practices 1 2011-01-01 2011-01-01 false Acquisitions by gift, intestate succession... IMPROVEMENTS ACT OF 1976 EXEMPTION RULES § 802.71 Acquisitions by gift, intestate succession or devise, or by irrevocable trust. Acquisitions resulting from a gift, intestate succession, testamentary disposition...

  3. 75 FR 14059 - Federal Acquisition Regulation; FAR Case 2008-027, Federal Awardee Performance and Integrity...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-23

    ...The Civilian Agency Acquisition Council and the Defense Acquisition Regulations Council (Councils) are issuing a final rule amending the Federal Acquisition Regulation (FAR) to implement the Federal Awardee Performance and Integrity Information System (FAPIIS), as required by section 872 of the Duncan Hunter National Defense Authorization Act for Fiscal Year 2009. FAPIIS is designed to improve......

  4. 16 CFR 802.5 - Acquisitions of investment rental property assets.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 16 Commercial Practices 1 2012-01-01 2012-01-01 false Acquisitions of investment rental property... § 802.5 Acquisitions of investment rental property assets. (a) Acquisitions of investment rental property assets shall be exempt from the requirements of the act. (b) Investment rental property...

  5. 16 CFR 802.71 - Acquisitions by gift, intestate succession or devise, or by irrevocable trust.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 16 Commercial Practices 1 2012-01-01 2012-01-01 false Acquisitions by gift, intestate succession... IMPROVEMENTS ACT OF 1976 EXEMPTION RULES § 802.71 Acquisitions by gift, intestate succession or devise, or by irrevocable trust. Acquisitions resulting from a gift, intestate succession, testamentary disposition...

  6. 16 CFR 802.71 - Acquisitions by gift, intestate succession or devise, or by irrevocable trust.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 16 Commercial Practices 1 2014-01-01 2014-01-01 false Acquisitions by gift, intestate succession... IMPROVEMENTS ACT OF 1976 EXEMPTION RULES § 802.71 Acquisitions by gift, intestate succession or devise, or by irrevocable trust. Acquisitions resulting from a gift, intestate succession, testamentary disposition...

  7. 16 CFR 802.71 - Acquisitions by gift, intestate succession or devise, or by irrevocable trust.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 16 Commercial Practices 1 2010-01-01 2010-01-01 false Acquisitions by gift, intestate succession... IMPROVEMENTS ACT OF 1976 EXEMPTION RULES § 802.71 Acquisitions by gift, intestate succession or devise, or by irrevocable trust. Acquisitions resulting from a gift, intestate succession, testamentary disposition...

  8. 16 CFR 802.71 - Acquisitions by gift, intestate succession or devise, or by irrevocable trust.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 16 Commercial Practices 1 2013-01-01 2013-01-01 false Acquisitions by gift, intestate succession... IMPROVEMENTS ACT OF 1976 EXEMPTION RULES § 802.71 Acquisitions by gift, intestate succession or devise, or by irrevocable trust. Acquisitions resulting from a gift, intestate succession, testamentary disposition...

  9. 77 FR 77078 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-31

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with the... become a mutual holding company through the acquisition of East Cambridge Savings Bank,...

  10. 78 FR 6326 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-30

    ... merger subsidiary, NM Lobo Acquisition Corporation, and thereby acquire First National Bank of Santa Fe... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with...

  11. 75 FR 65485 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-25

    ... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with the... Peachtree Street, N.E., Atlanta, Georgia 30309: 1. Franklin Acquisition Company, LLC, Tampa, Florida;...

  12. 76 FR 22070 - Federal Acquisition Regulation; Service Contracts Reporting Requirements

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-20

    ...DoD, GSA, and NASA are proposing to amend the Federal Acquisition Regulation (FAR) to implement section 743 of Division C of the Consolidated Appropriations Act, 2010. This proposed rule amends the FAR to require service contractors for executive agencies, except the Department of Defense (DoD), covered by the Federal Activities Inventory Reform (FAIR) Act of 1998, to submit information......

  13. 77 FR 2653 - Defense Federal Acquisition Regulation Supplement; Pilot Program for Acquisition of Military...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-19

    ... Regulation Supplement; Pilot Program for Acquisition of Military-Purpose Nondevelopmental Items (DFARS Case... Authorization Act for Fiscal Year 2011, DoD published an interim rule in the Federal Register at 76 FR 38048 on... a pilot program to assess the feasibility and advisability of acquiring...

  14. 75 FR 77721 - Federal Acquisition Regulation; Federal Acquisition Circular 2005-47; Introduction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-13

    ... calendar year of the contract is expected to exceed the simplified acquisition threshold; (2) For work... Act encourages collective bargaining, and protects the exercise by employees of their freedom to... Administration (SBA) final rule published in the Federal Register at 69 FR 29411 on May 24, 2004, and an...

  15. 77 FR 19975 - VA Acquisition Regulation: Simplified Acquisition Procedures for Health-Care Resources (Section...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-03

    ... Procedures for Health-Care Resources (Section 610 Review) AGENCY: Department of Veterans Affairs. ACTION... acquisition of health-care resources, consisting of commercial services or the use of medical equipment or space, pursuant to the Veterans' Health Care Eligibility Reform Act of 1996 (38 U.S.C. 8151-8153)....

  16. H.R. 2400, Report number 105-467, Parts 1, 2 and 3: This act may be cited as the Building Efficient Surface Transportation and Equity Act of 1998, introduced in the House of Representatives, One Hundred Fifth Congress, Second Session, March 27, 1998

    SciTech Connect

    1998-12-31

    This act is to authorize funds for Federal-aid highways, highway safety programs, and transit programs, and for other purposes. The topics of the act include Federal-aid highways, highway safety, federal transit administration programs, motor carrier safety, programmatic reforms and streamlining, transportation research, recreational boating safety program and railroads.

  17. Human target acquisition performance

    NASA Astrophysics Data System (ADS)

    Teaney, Brian P.; Du Bosq, Todd W.; Reynolds, Joseph P.; Thompson, Roger; Aghera, Sameer; Moyer, Steven K.; Flug, Eric; Espinola, Richard; Hixson, Jonathan

    2012-06-01

    The battlefield has shifted from armored vehicles to armed insurgents. Target acquisition (identification, recognition, and detection) range performance involving humans as targets is vital for modern warfare. The acquisition and neutralization of armed insurgents while at the same time minimizing fratricide and civilian casualties is a mounting concern. U.S. Army RDECOM CERDEC NVESD has conducted many experiments involving human targets for infrared and reflective band sensors. The target sets include human activities, hand-held objects, uniforms & armament, and other tactically relevant targets. This paper will define a set of standard task difficulty values for identification and recognition associated with human target acquisition performance.

  18. Interactive knowledge acquisition tools

    NASA Technical Reports Server (NTRS)

    Dudziak, Martin J.; Feinstein, Jerald L.

    1987-01-01

    The problems of designing practical tools to aid the knowledge engineer and general applications used in performing knowledge acquisition tasks are discussed. A particular approach was developed for the class of knowledge acquisition problem characterized by situations where acquisition and transformation of domain expertise are often bottlenecks in systems development. An explanation is given on how the tool and underlying software engineering principles can be extended to provide a flexible set of tools that allow the application specialist to build highly customized knowledge-based applications.

  19. Taking 'control': Federal energy regulatory Commission policy on acquisitions of electric utility securities

    SciTech Connect

    Bloom, David I.; O'Brien, Angela D.

    2009-05-15

    Section 203 of the Federal Power Act remains subject to considerable uncertainty. Therefore, it is important to keep several rules in mind. Each potential acquisition must be separately analyzed under Section 203(a)(1) and 203(a)(2) of the Act. A proposed acquisition that is exempt or preapproved under one provision may still require prior FERC approval under the other one. (author)

  20. BLIMPK/Streamline Surface Catalytic Heating Predictions on the Space Shuttle Orbiter

    NASA Technical Reports Server (NTRS)

    Marichalar, Jeremiah J.; Rochelle, William C.; Kirk, Benjamin S.; Campbell, Charles H.

    2006-01-01

    This paper describes the results of an analysis of localized catalytic heating effects to the U.S. Space Shuttle Orbiter Thermal Protection System (TPS). The analysis applies to the High-temperature Reusable Surface Insulation (HRSI) on the lower fuselage and wing acreage, as well as the critical Reinforced Carbon-Carbon on the nose cap, chin panel and the wing leading edge. The object of the analysis was to use a modified two-layer approach to predict the catalytic heating effects on the Orbiter windward HRSI tile acreage, nose cap, and wing leading edge assuming localized highly catalytic or fully catalytic surfaces. The method incorporated the Boundary Layer Integral Matrix Procedure Kinetic (BLIMPK) code with streamline inputs from viscous Navier-Stokes solutions to produce heating rates for localized fully catalytic and highly catalytic surfaces as well as for nominal partially catalytic surfaces (either Reinforced Carbon-Carbon or Reaction Cured Glass) with temperature-dependent recombination coefficients. The highly catalytic heating results showed very good correlation with Orbiter Experiments STS-2, -3, and -5 centerline and STS-5 wing flight data for the HRSI tiles. Recommended catalytic heating factors were generated for use in future Shuttle missions in the event of quick-time analysis of damaged or repaired TPS areas during atmospheric reentry. The catalytic factors are presented along the streamlines as well as a function of stagnation enthalpy so they can be used for arbitrary trajectories.

  1. Streamline generation code for particle dynamics description in numerical models of turbulence

    NASA Astrophysics Data System (ADS)

    Dalena, S.; Chuychai, P.; Mace, R. L.; Greco, A.; Qin, G.; Matthaeus, W. H.

    2012-09-01

    Streamline Version 4 is a versatile Fortran 77 & C++ program for calculating charged test particle trajectories or field-lines for user-specified fields using the test-particle method. The user has the freedom to specify any type of field (analytical, tabulated in files, time dependent, etc.) and maintains complete control over initial conditions of trajectories/field-lines and boundary conditions of specified fields. The structure of Streamline was redesigned from previous versions in order to know not only particle or field-lines positions and velocities at each step of the simulations, but also the instantaneous field values as seen by particles. This was made to compute the instantaneous value of the particle's magnetic moment, but other applications are possible too. Accuracy tests of the code are shown for different cases, i.e., particles moving in constant magnetic field, magnetic plus constant electric field and wave field. In addition in the last part of the paper we concentrate our discussion on the study of velocity space diffusion of charged particles in turbulent slab fields, paying attention to the discretization of the fields and the temporal discretization of the dynamical equations. The diffusion of charged particles is a very common topic in plasma physics and astrophysics since it plays an important role in many different phenomena such as stochastic particle acceleration, diffusive shock acceleration, solar energetic particle propagation, and the scattering required for the solar modulation of galactic cosmic rays.

  2. Streamline based design guideline for deterministic microfluidic hydrodynamic single cell traps

    PubMed Central

    Shenoy, Aditi; Smith, Richard

    2015-01-01

    A prerequisite for single cell study is the capture and isolation of individual cells. In microfluidic devices, cell capture is often achieved by means of trapping. While many microfluidic trapping techniques exist, hydrodynamic methods are particularly attractive due to their simplicity and scalability. However, current design guidelines for single cell hydrodynamic traps predominantly rely on flow resistance manipulation or qualitative streamline analysis without considering the target particle size. This lack of quantitative design criteria from first principles often leads to non-optimal probabilistic trapping. In this work, we describe an analytical design guideline for deterministic single cell hydrodynamic trapping through the optimization of streamline distributions under laminar flow with cell size as a key parameter. Using this guideline, we demonstrate an example design which can achieve 100% capture efficiency for a given particle size. Finite element modelling was used to determine the design parameters necessary for optimal trapping. The simulation results were subsequently confirmed with on-chip microbead and white blood cell trapping experiments. PMID:25825618

  3. Multi-faceted informatics system for digitising and streamlining the reablement care model.

    PubMed

    Bond, Raymond R; Mulvenna, Maurice D; Finlay, Dewar D; Martin, Suzanne

    2015-08-01

    Reablement is new paradigm to increase independence in the home amongst the ageing population. And it remains a challenge to design an optimal electronic system to streamline and integrate reablement into current healthcare infrastructure. Furthermore, given reablement requires collaboration with a range of organisations (including national healthcare institutions and community/voluntary service providers), such a system needs to be co-created with all stakeholders involved. Thus, the purpose of this study is, (1) to bring together stakeholder groups to elicit a comprehensive set of requirements for a digital reablement system, (2) to utilise emerging technologies to implement a system and a data model based on the requirements gathered and (3) to involve user groups in a usability assessment of the system. In this study we employed a mixed qualitative approach that included a series of stakeholder-involved activities. Collectively, 73 subjects were recruited to participate in an ideation event, a quasi-hackathon and a usability study. The study unveiled stakeholder-led requirements, which resulted in a novel cloud-based system that was created using emerging web technologies. The system is driven by a unique data model and includes interactive features that are necessary for streamlining the reablement care model. In summary, this system allows community based interventions (or services) to be prescribed to occupants whilst also monitoring the occupant's progress of independent living. PMID:25998520

  4. Recent Advances in VisIt: AMR Streamlines and Query-Driven Visualization

    SciTech Connect

    Weber, Gunther; Ahern, Sean; Bethel, Wes; Borovikov, Sergey; Childs, Hank; Deines, Eduard; Garth, Christoph; Hagen, Hans; Hamann, Bernd; Joy, Kenneth; Martin, David; Meredith, Jeremy; Prabhat,; Pugmire, David; Rubel, Oliver; Van Straalen, Brian; Wu, Kesheng

    2009-11-12

    Adaptive Mesh Refinement (AMR) is a highly effective method for simulations spanning a large range of spatiotemporal scales such as those encountered in astrophysical simulations. Combining research in novel AMR visualization algorithms and basic infrastructure work, the Department of Energy's (DOEs) Science Discovery through Advanced Computing (SciDAC) Visualization and Analytics Center for Enabling Technologies (VACET) has extended VisIt, an open source visualization tool that can handle AMR data without converting it to alternate representations. This paper focuses on two recent advances in the development of VisIt. First, we have developed streamline computation methods that properly handle multi-domain data sets and utilize effectively multiple processors on parallel machines. Furthermore, we are working on streamline calculation methods that consider an AMR hierarchy and detect transitions from a lower resolution patch into a finer patch and improve interpolation at level boundaries. Second, we focus on visualization of large-scale particle data sets. By integrating the DOE Scientific Data Management (SDM) Center's FastBit indexing technology into VisIt, we are able to reduce particle counts effectively by thresholding and by loading only those particles from disk that satisfy the thresholding criteria. Furthermore, using FastBit it becomes possible to compute parallel coordinate views efficiently, thus facilitating interactive data exploration of massive particle data sets.

  5. How self-similarity leads to streamlining of a flexible body

    NASA Astrophysics Data System (ADS)

    Alben, Silas; Shelley, Michael; Zhang, Jun

    2003-11-01

    The ability to reduce fluid drag is an important survival factor for organisms which inhabit high-speed flows. Flexibility plays a central role in drag reduction, particularly for plants, which are restricted to a somewhat ``passive'' interaction with a flow field. We have examined the role of flexibility in drag reduction experimentally using a flexible glass fiber immersed in a soap-film flow, and numerically through a simple free-streamline model which emphasizes the flow-body interaction. In this work we present an asymptotic argument which uncovers the governing phenomenon in the model: the formation of a ``tip region'' on the fiber, which gives rise to self-similarity. Our work shows that an assumed self-similar form explains the salient features of the numerical solutions: a drag which scales as flow speed to the 4/3 power, and a body shape and separation streamlines which assume a unified, parabolic form. We also present numerical results indicating that these features persist under modifications to the model suggested by the experiment: the presence of flow tunnel walls and a back pressure in the body wake. This provides support for the applicability of our results to general steady wake flows past flexible bodies.

  6. Streamlines in stationary homogeneous isotropic turbulence and fractal-generated turbulence

    NASA Astrophysics Data System (ADS)

    Boschung, J.; Peters, N.; Laizet, S.; Vassilicos, J. C.

    2016-04-01

    We compare streamline statistics in stationary homogeneous isotropic turbulence and in turbulence generated by a fractal square grid. We examine streamline segments characterised by the velocity difference {{Δ }}u and the distance l between extremum points. We find close agreement between the stationary homogeneous isotropic turbulence and the decay region of the fractal-generated turbulence as well as the production region of the fractal flow for small segments. The statistics of larger segments are very similar for the isotropic turbulence and the decay region, but differ for the production region. Specifically, we examine the first, second and third conditional mean < {[{{Δ }}u]}n| l> . Noticeably, non-vanishing < {[{{Δ }}u]}n| l> for n=1,3 are due to an asymmetry of positive and negative segments, i.e. those for which {{Δ }}u\\gt 0 and {{Δ }}u\\lt 0, respectively. This asymmetry is not only kinematic, but is also due to dissipative effects and therefore < {[{{Δ }}u]}n| l> contains cascade information.

  7. Hunger promotes acquisition of nonfood objects

    PubMed Central

    Xu, Alison Jing; Schwarz, Norbert; Wyer, Robert S.

    2015-01-01

    Hunger motivates people to consume food, for which finding and acquiring food is a prerequisite. We test whether the acquisition component spills over to nonfood objects: Are hungry people more likely to acquire objects that cannot satisfy their hunger? Five laboratory and field studies show that hunger increases the accessibility of acquisition-related concepts and the intention to acquire not only food but also nonfood objects. Moreover, people act on this intention and acquire more nonfood objects (e.g., binder clips) when they are hungry, both when these items are freely available and when they must be paid for. However, hunger does not influence how much they like nonfood objects. We conclude that a basic biologically based motivation can affect substantively unrelated behaviors that cannot satisfy the motivation. This presumably occurs because hunger renders acquisition-related concepts and behaviors more accessible, which influences decisions in situations to which they can be applied. PMID:25730858

  8. 48 CFR 1480.302 - Restrictions on use of the Buy Indian Act.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Buy Indian Act. 1480.302 Section 1480.302 Federal Acquisition Regulations System DEPARTMENT OF THE INTERIOR INDIAN AFFAIRS SUPPLEMENT ACQUISITIONS UNDER THE BUY INDIAN ACT Subpart 1480.3 Applicability 1480.302 Restrictions on use of the Buy Indian Act. (a) IA must not use the authority of the Buy Indian...

  9. Acquisition signal transmitter

    NASA Technical Reports Server (NTRS)

    Friedman, Morton L. (Inventor)

    1989-01-01

    An encoded information transmitter which transmits a radio frequency carrier that is amplitude modulated by a constant frequency waveform and thereafter amplitude modulated by a predetermined encoded waveform, the constant frequency waveform modulated carrier constituting an acquisition signal and the encoded waveform modulated carrier constituting an information bearing signal, the acquisition signal providing enhanced signal acquisition and interference rejection favoring the information bearing signal. One specific application for this transmitter is as a distress transmitter where a conventional, legislated audio tone modulated signal is transmitted followed first by the acquisition signal and then the information bearing signal, the information bearing signal being encoded with, among other things, vehicle identification data. The acquistion signal enables a receiver to acquire the information bearing signal where the received signal is low and/or where the received signal has a low signal-to-noise ratio in an environment where there are multiple signals in the same frequency band as the information bearing signal.

  10. High Speed data acquisition

    SciTech Connect

    Cooper, Peter S.

    1998-02-01

    A general introduction to high Speed data acquisition system techniques in modern particle physics experiments is given. Examples are drawn from the SELEX(E781) high statistics charmed baryon production and decay experiment now taking data at Fermilab.

  11. Documentation and knowledge acquisition

    NASA Technical Reports Server (NTRS)

    Rochowiak, Daniel; Moseley, Warren

    1990-01-01

    Traditional approaches to knowledge acquisition have focused on interviews. An alternative focuses on the documentation associated with a domain. Adopting a documentation approach provides some advantages during familiarization. A knowledge management tool was constructed to gain these advantages.

  12. Data acquisition system

    DOEpatents

    Shapiro, Stephen L.; Mani, Sudhindra; Atlas, Eugene L.; Cords, Dieter H. W.; Holbrook, Britt

    1997-01-01

    A data acquisition circuit for a particle detection system that allows for time tagging of particles detected by the system. The particle detection system screens out background noise and discriminate between hits from scattered and unscattered particles. The detection system can also be adapted to detect a wide variety of particle types. The detection system utilizes a particle detection pixel array, each pixel containing a back-biased PIN diode, and a data acquisition pixel array. Each pixel in the particle detection pixel array is in electrical contact with a pixel in the data acquisition pixel array. In response to a particle hit, the affected PIN diodes generate a current, which is detected by the corresponding data acquisition pixels. This current is integrated to produce a voltage across a capacitor, the voltage being related to the amount of energy deposited in the pixel by the particle. The current is also used to trigger a read of the pixel hit by the particle.

  13. Rx for Acquisitions Hangups

    ERIC Educational Resources Information Center

    Huleatt, Richard S.

    1973-01-01

    A system of ordering library materials efficiently, quickly and at low cost is presented. The procedure bypasses purchasing departments and helps reduce acquisitions time by authorizing direct ordering by the library. Forms and procedures used are discussed. (1 reference) (DH)

  14. FOS Target Acquisition Test

    NASA Astrophysics Data System (ADS)

    Koratkar, Anuradha

    1994-01-01

    FOS onboard target acquisition software capabilities will be verified by this test -- point source binary, point source firmware, point source peak-up, wfpc2 assisted realtime, point source peak-down, taled assisted binary, taled assisted firmware, and nth star binary modes. The primary modes are tested 3 times to determine repeatability. This test is the only test that will verify mode-to-mode acquisition offsets. This test has to be conducted for both the RED and BLUE detectors.

  15. SCADA Application for ACTS Technology

    NASA Technical Reports Server (NTRS)

    Fairbanks, Barry

    1992-01-01

    The results of a system level study done by Hughes Network Systems for NASA are presented. For the supervisory control and data acquisition (SCADA) application, use of Ka-band spot beam satellite technology associated with NASA's Advanced Communication Technology Satellite (ACTS) offers a reduction in Earth station antenna size and transmitter power that may translate into lower system costs. The approaches taken to determine commercial potential of the system are described.

  16. Adaptive line enhancers for fast acquisition

    NASA Technical Reports Server (NTRS)

    Yeh, H.-G.; Nguyen, T. M.

    1994-01-01

    Three adaptive line enhancer (ALE) algorithms and architectures - namely, conventional ALE, ALE with double filtering, and ALE with coherent accumulation - are investigated for fast carrier acquisition in the time domain. The advantages of these algorithms are their simplicity, flexibility, robustness, and applicability to general situations including the Earth-to-space uplink carrier acquisition and tracking of the spacecraft. In the acquisition mode, these algorithms act as bandpass filters; hence, the carrier-to-noise ratio (CNR) is improved for fast acquisition. In the tracking mode, these algorithms simply act as lowpass filters to improve signal-to-noise ratio; hence, better tracking performance is obtained. It is not necessary to have a priori knowledge of the received signal parameters, such as CNR, Doppler, and carrier sweeping rate. The implementation of these algorithms is in the time domain (as opposed to the frequency domain, such as the fast Fourier transform (FFT)). The carrier frequency estimation can be updated in real time at each time sample (as opposed to the batch processing of the FFT). The carrier frequency to be acquired can be time varying, and the noise can be non-Gaussian, nonstationary, and colored.

  17. Streamlining Pediatric Emergency Medicine at a Tertiary-care Hospital of a Low- to Middle-income Country.

    PubMed

    Bhimani, Salima Ahmed; Brown, Nick; Mian, Asad I

    2015-12-01

    The factors of integral importance to run any pediatric emergency department efficiently are the ability to process a high volume of patients quickly and a sensitive triage system that identifies the sickest children. Achieving these aims in a low- to middle-income country setting is more complex as a result of scarce resources and data on which to base systems. In this article, we discuss existing models of streamlining pediatric emergency department services that are most applicable to resource-limited countries, and present suggestions for streamlining pediatric emergency care in such countries. PMID:26713983

  18. 48 CFR 52.225-2 - Buy American Act Certificate.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 2 2013-10-01 2013-10-01 false Buy American Act....225-2 Buy American Act Certificate. As prescribed in 25.1101(a)(2), insert the following provision: Buy American Act Certificate (FEB 2009) (a) The offeror certifies that each end product, except...

  19. 48 CFR 852.236-89 - Buy American Act.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 5 2012-10-01 2012-10-01 false Buy American Act. 852.236... AND FORMS SOLICITATION PROVISIONS AND CONTRACT CLAUSES Texts of Provisions and Clauses 852.236-89 Buy American Act. As prescribed in Table 825.1102, insert the following clause: Buy American Act (JAN 2008)...

  20. 48 CFR 852.236-89 - Buy American Act.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 5 2014-10-01 2014-10-01 false Buy American Act. 852.236... AND FORMS SOLICITATION PROVISIONS AND CONTRACT CLAUSES Texts of Provisions and Clauses 852.236-89 Buy American Act. As prescribed in Table 825.1102, insert the following clause: Buy American Act (JAN 2008)...

  1. 48 CFR 52.225-2 - Buy American Act Certificate.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 2 2011-10-01 2011-10-01 false Buy American Act....225-2 Buy American Act Certificate. As prescribed in 25.1101(a)(2), insert the following provision: Buy American Act Certificate (FEB 2009) (a) The offeror certifies that each end product, except...

  2. 48 CFR 52.225-2 - Buy American Act Certificate.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 2 2010-10-01 2010-10-01 false Buy American Act....225-2 Buy American Act Certificate. As prescribed in 25.1101(a)(2), insert the following provision: Buy American Act Certificate (FEB 2009) (a) The offeror certifies that each end product, except...

  3. 48 CFR 852.236-89 - Buy American Act.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 5 2011-10-01 2011-10-01 false Buy American Act. 852.236... AND FORMS SOLICITATION PROVISIONS AND CONTRACT CLAUSES Texts of Provisions and Clauses 852.236-89 Buy American Act. As prescribed in Table 825.1102, insert the following clause: Buy American Act (JAN 2008)...

  4. 48 CFR 52.225-2 - Buy American Act Certificate.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 2 2012-10-01 2012-10-01 false Buy American Act....225-2 Buy American Act Certificate. As prescribed in 25.1101(a)(2), insert the following provision: Buy American Act Certificate (FEB 2009) (a) The offeror certifies that each end product, except...

  5. 48 CFR 852.236-89 - Buy American Act.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 5 2013-10-01 2013-10-01 false Buy American Act. 852.236... AND FORMS SOLICITATION PROVISIONS AND CONTRACT CLAUSES Texts of Provisions and Clauses 852.236-89 Buy American Act. As prescribed in Table 825.1102, insert the following clause: Buy American Act (JAN 2008)...

  6. 48 CFR 1452.224-1 - Privacy Act Notification.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Privacy Act are set forth in 43 CFR 2, subpart D. The CFR is available for public inspection at the... 48 Federal Acquisition Regulations System 5 2014-10-01 2014-10-01 false Privacy Act Notification... Privacy Act Notification. (a) As prescribed in 1424.104, the clause at FAR 52.224-1, Privacy...

  7. 48 CFR 52.224-1 - Privacy Act Notification.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 2 2014-10-01 2014-10-01 false Privacy Act Notification....224-1 Privacy Act Notification. As prescribed in 24.104, insert the following clause in solicitations... required to accomplish an agency function: Privacy Act Notification (APR 1984) The Contractor will...

  8. 48 CFR 52.224-2 - Privacy Act.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 2 2014-10-01 2014-10-01 false Privacy Act. 52.224-2... AND FORMS SOLICITATION PROVISIONS AND CONTRACT CLAUSES Text of Provisions and Clauses 52.224-2 Privacy... agency function: Privacy Act (APR 1984) (a) The Contractor agrees to— (1) Comply with the Privacy Act...

  9. 48 CFR 1452.224-1 - Privacy Act Notification.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Privacy Act are set forth in 43 CFR 2, subpart D. The CFR is available for public inspection at the... 48 Federal Acquisition Regulations System 5 2013-10-01 2013-10-01 false Privacy Act Notification... Privacy Act Notification. (a) As prescribed in 1424.104, the clause at FAR 52.224-1, Privacy...

  10. 48 CFR 52.224-1 - Privacy Act Notification.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 2 2011-10-01 2011-10-01 false Privacy Act Notification....224-1 Privacy Act Notification. As prescribed in 24.104, insert the following clause in solicitations... required to accomplish an agency function: Privacy Act Notification (APR 1984) The Contractor will...

  11. 48 CFR 52.224-1 - Privacy Act Notification.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 2 2010-10-01 2010-10-01 false Privacy Act Notification....224-1 Privacy Act Notification. As prescribed in 24.104, insert the following clause in solicitations... required to accomplish an agency function: Privacy Act Notification (APR 1984) The Contractor will...

  12. 48 CFR 52.224-2 - Privacy Act.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 2 2012-10-01 2012-10-01 false Privacy Act. 52.224-2... AND FORMS SOLICITATION PROVISIONS AND CONTRACT CLAUSES Text of Provisions and Clauses 52.224-2 Privacy... agency function: Privacy Act (APR 1984) (a) The Contractor agrees to— (1) Comply with the Privacy Act...

  13. 48 CFR 352.224-70 - Privacy Act.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 4 2013-10-01 2013-10-01 false Privacy Act. 352.224-70... SOLICITATION PROVISIONS AND CONTRACT CLAUSES Texts of Provisions and Clauses 352.224-70 Privacy Act. As prescribed in 324.103(b)(2), the Contracting Officer shall insert the following clause: Privacy Act...

  14. 48 CFR 352.224-70 - Privacy Act.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 4 2011-10-01 2011-10-01 false Privacy Act. 352.224-70... SOLICITATION PROVISIONS AND CONTRACT CLAUSES Texts of Provisions and Clauses 352.224-70 Privacy Act. As prescribed in 324.103(b)(2), the Contracting Officer shall insert the following clause: Privacy Act...

  15. 48 CFR 1452.224-1 - Privacy Act Notification.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Privacy Act are set forth in 43 CFR 2, subpart D. The CFR is available for public inspection at the... 48 Federal Acquisition Regulations System 5 2011-10-01 2011-10-01 false Privacy Act Notification... Privacy Act Notification. (a) As prescribed in 1424.104, the clause at FAR 52.224-1, Privacy...

  16. 48 CFR 352.224-70 - Privacy Act.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 4 2014-10-01 2014-10-01 false Privacy Act. 352.224-70... SOLICITATION PROVISIONS AND CONTRACT CLAUSES Texts of Provisions and Clauses 352.224-70 Privacy Act. As prescribed in 324.103(b)(2), the Contracting Officer shall insert the following clause: Privacy Act...

  17. 48 CFR 52.224-1 - Privacy Act Notification.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 2 2013-10-01 2013-10-01 false Privacy Act Notification....224-1 Privacy Act Notification. As prescribed in 24.104, insert the following clause in solicitations... required to accomplish an agency function: Privacy Act Notification (APR 1984) The Contractor will...

  18. 48 CFR 52.224-1 - Privacy Act Notification.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 2 2012-10-01 2012-10-01 false Privacy Act Notification....224-1 Privacy Act Notification. As prescribed in 24.104, insert the following clause in solicitations... required to accomplish an agency function: Privacy Act Notification (APR 1984) The Contractor will...

  19. 48 CFR 352.224-70 - Privacy Act.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 4 2012-10-01 2012-10-01 false Privacy Act. 352.224-70... SOLICITATION PROVISIONS AND CONTRACT CLAUSES Texts of Provisions and Clauses 352.224-70 Privacy Act. As prescribed in 324.103(b)(2), the Contracting Officer shall insert the following clause: Privacy Act...

  20. 48 CFR 1452.224-1 - Privacy Act Notification.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Privacy Act are set forth in 43 CFR 2, subpart D. The CFR is available for public inspection at the... 48 Federal Acquisition Regulations System 5 2012-10-01 2012-10-01 false Privacy Act Notification... Privacy Act Notification. (a) As prescribed in 1424.104, the clause at FAR 52.224-1, Privacy...

  1. 48 CFR 52.224-2 - Privacy Act.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 2 2013-10-01 2013-10-01 false Privacy Act. 52.224-2... AND FORMS SOLICITATION PROVISIONS AND CONTRACT CLAUSES Text of Provisions and Clauses 52.224-2 Privacy... agency function: Privacy Act (APR 1984) (a) The Contractor agrees to— (1) Comply with the Privacy Act...

  2. 48 CFR 352.237-70 - Pro-Children Act.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 4 2014-10-01 2014-10-01 false Pro-Children Act. 352.237...-Children Act. As prescribed in 337.103-70(a), the Contracting Officer shall insert the following clause: Pro-Children Act (January 2006) (a) Public Law 103-227, Title X, Part C, also known as the...

  3. 48 CFR 352.237-70 - Pro-Children Act.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 4 2013-10-01 2013-10-01 false Pro-Children Act. 352.237...-Children Act. As prescribed in 337.103-70(a), the Contracting Officer shall insert the following clause: Pro-Children Act (January 2006) (a) Public Law 103-227, Title X, Part C, also known as the...

  4. 48 CFR 352.237-70 - Pro-Children Act.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 4 2012-10-01 2012-10-01 false Pro-Children Act. 352.237...-Children Act. As prescribed in 337.103-70(a), the Contracting Officer shall insert the following clause: Pro-Children Act (January 2006) (a) Public Law 103-227, Title X, Part C, also known as the...

  5. 48 CFR 352.237-70 - Pro-Children Act.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 4 2011-10-01 2011-10-01 false Pro-Children Act. 352.237...-Children Act. As prescribed in 337.103-70(a), the Contracting Officer shall insert the following clause: Pro-Children Act (January 2006) (a) Public Law 103-227, Title X, Part C, also known as the...

  6. 48 CFR 352.237-70 - Pro-Children Act.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 4 2010-10-01 2010-10-01 false Pro-Children Act. 352.237...-Children Act. As prescribed in 337.103-70(a), the Contracting Officer shall insert the following clause: Pro-Children Act (January 2006) (a) Public Law 103-227, Title X, Part C, also known as the...

  7. SOFAR: A New Sound-Acquisition Software Package for Underwater Noise Monitoring.

    PubMed

    Lee, Robert R; Patricio, Sofia; Parker, Samantha

    2016-01-01

    When monitoring underwater noise, the recording of in situ environmental parameters is a vital supplement to the recording of ambient noise or offshore anthropogenic activities. Although there are some software packages available that have the capability of recording sound at different sample rates using a variety of tools, the set-up configuration and all important environmental conditions recording still rely on the operator. SOFAR, a new sound-acquisition software package, was designed and created to provide an intuitive and streamlined process of recording data along with all the necessary metrics that play a vital role in the data analysis and assessment. PMID:26611009

  8. 78 FR 17176 - Federal Acquisition Regulation; Defense Base Act

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-20

    ... contractor and subcontractor responsibilities to obtain workers' compensation insurance or to qualify as a self-insurer, and other requirements, under the terms of the Longshore and Harbor Workers' Compensation... contractor and subcontractor responsibilities to obtain workers' compensation insurance or to qualify as...

  9. VELOCITIES AND STREAMLINES ON A BLADE-TO-BLADE STREAM SURFACE OF A TURBOMACHINE

    NASA Technical Reports Server (NTRS)

    Katsanis, T.

    1994-01-01

    This program is a revision of an existing program for blade-to-blade aerodynamic analysis of turbomachine blades and it is a simpler program while consistent with related programs. The analysis is for two-dimensional, subsonic, compressible (or incompressible), nonviscous flow in a circular or straight infinite cascade of blades, which may be fixed or rotating. The flow may be axial, radial, or mixed, and the stream channel thickness may change in the through-flow direction. The program input consists of blade and stream channel geometry, total flow conditions, inlet and outlet flow angles, and blade-to-blade stream channel weight flow. The output includes blade surface velocities, velocity magnitude and direction at all interior mesh points in the blade-to-blade passage, and streamline coordinates throughout the passage. This program was developed on an IBM 7094/7044 DCS.

  10. Prediction of airfoil stall using Navier-Stokes equations in streamline coordinates

    NASA Technical Reports Server (NTRS)

    Choi, D. H.; Sohn, C. H.; Oh, C. S.

    1992-01-01

    A Navier-Stokes procedure to calculate the flow about an airfoil at incidence was developed. The parabolized equations are solved in the streamline coordinates generated for an arbitrary airfoil shape using conformal mapping. A modified k-epsilon turbulence model is applied in the entire domain, but the eddy viscosity in the laminar region is suppressed artificially to simulate the region correctly. The procedure was applied to airfoils at various angles of attack, and the results are quite satisfactory for both laminar and turbulent flows. It is shown that the present choice of the coordinate system reduces the error due to numerical diffusion, and that the lift is accurately predicted for a wide range of incidence.

  11. Streamline-based Simulation of Geological CO2 Storage: Otway Case-Study

    NASA Astrophysics Data System (ADS)

    Lazaro Vallejo, Lorena; Dance, Tess; Cinar, Yildiray; Laforce, Tara

    2010-05-01

    Three of the most important challenges for the near future: maximizing oil extraction, securing fresh water supplies and mitigating climate change through Carbon Capture and Storage (CCS), require a better understanding of flow in porous media. It has been shown by Qi et al [1] that an optimum injection strategy for CO2 storage can result in up to 90% of the injected CO2 being trapped in the pore network of the rock during the injection phase of a CO2 storage project. When the non-wetting phase saturation increases and then decreases in the pore space, part of the non-wetting phase is trapped in pores as a residual saturation. Injection of CO2 and water in alternating cycles can be used to engineer this trapping. With time, CO2 will dissolve in the brine surrounding it and finally precipitate as carbonate. The Otway Project, taking place in the south-east of Australia and lead by the Cooperative Research Centre for Greenhouse Gas Technologies (CO2CRC), is the world's largest research and geosequestration demonstration project [2]. CO2CRC has proposed testing the concept of using residual trapping to improve storage security by using Huff and Push injections. In this case, CO2 is injected in a depleted gas reservoir together with methane. The Huff and Push injection mechanism consists of a single well which alternates injection and production. Initially, brine is injected followed by a mixture of CO2/CH4/other gases (77/20/3 mole%) followed by a shut-in period. Then, when production starts the water front should move faster towards the production well and immobilise CO2 in the micro pores of the rock. Very little production of CO2 should be observed, confirming that it has been immobilized within the formation. Traditional grid-based reservoir simulations are used to predict fluid behaviour and to design injection strategies that maximize both oil extraction and trapping of carbon dioxide in the rock formation. Unlike conventional grid-based simulations, streamline

  12. Stability of Streamline Upwind Petrov-Galerkin (SUPG) finite elements for transient advection-diffusion problems.

    SciTech Connect

    Shadid, John Nicolas; Bochev, Pavel Blagoveston; Gunzburger, Max Donald

    2003-09-01

    Implicit time integration coupled with SUPG discretization in space leads to additional terms that provide consistency and improve the phase accuracy for convection dominated flows. Recently, it has been suggested that for small Courant numbers these terms may dominate the streamline diffusion term, ostensibly causing destabilization of the SUPG method. While consistent with a straightforward finite element stability analysis, this contention is not supported by computational experiments and contradicts earlier Von-Neumann stability analyses of the semidiscrete SUPG equations. This prompts us to re-examine finite element stability of the fully discrete SUPG equations. A careful analysis of the additional terms reveals that, regardless of the time step size, they are always dominated by the consistent mass matrix. Consequently, SUPG cannot be destabilized for small Courant numbers. Numerical results that illustrate our conclusions are reported.

  13. Streamlining Software Aspects of Certification: Technical Team Report on the First Industry Workshop

    NASA Technical Reports Server (NTRS)

    Hayhurst, Kelly J.; Holloway, C. Michael; Knight, John C.; Leveson, Nancy G.; Yang, Jeffrey C.; Dorsey, Cheryl A.; McCormick, G. Frank

    1998-01-01

    To address concerns about time and expense associated with software aspects of certification, the Federal Aviation Administration (FAA) began the Streamlining Software Aspects of Certification (SSAC) program. As part of this program, a Technical Team was established to determine whether the cost and time associated with certifying aircraft can be reduced while maintaining or improving safety, with the intent of impacting the FAA's Flight 2000 program. The Technical Team conducted a workshop to gain a better understanding of the major concerns in industry about software cost and schedule. Over 120 people attended the workshop, including representatives from the FAA,commercial transport and general aviation aircraft manufacturers and suppliers, and procurers and developers of non-airborne systems; and, more than 200 issues about software aspects of certification were recorded. This paper provides an overview of the SSAC program, motivation for the workshop, details of the workshop activities and outcomes, and recommendations for follow-on work.

  14. A Streamlined Strategy for Biohydrogen Production with Halanaerobium hydrogeniformans, an Alkaliphilic Bacterium

    PubMed Central

    Begemann, Matthew B.; Mormile, Melanie R.; Sitton, Oliver C.; Wall, Judy D.; Elias, Dwayne A.

    2012-01-01

    Biofuels are anticipated to enable a shift from fossil fuels for renewable transportation and manufacturing fuels, with biohydrogen considered attractive since it could offer the largest reduction of global carbon budgets. Currently, lignocellulosic biohydrogen production remains inefficient with pretreatments that are heavily fossil fuel-dependent. However, bacteria using alkali-treated biomass could streamline biofuel production while reducing costs and fossil fuel needs. An alkaliphilic bacterium, Halanaerobium hydrogeniformans, is described that is capable of biohydrogen production at levels rivaling neutrophilic strains, but at pH 11 and hypersaline conditions. H. hydrogeniformans ferments a variety of 5- and 6-carbon sugars derived from hemicellulose and cellulose including cellobiose, and forms the end products hydrogen, acetate, and formate. Further, it can also produce biohydrogen from switchgrass and straw pretreated at temperatures far lower than any previously reported and in solutions compatible with growth. Hence, this bacterium can potentially increase the efficiency and efficacy of biohydrogen production from renewable biomass resources. PMID:22509174

  15. Easy XMM-Newton Data Analysis with the Streamlined ABC Guide!

    NASA Astrophysics Data System (ADS)

    Valencic, Lynne A.; Snowden, Steven L.; Pence, William D.

    2016-01-01

    The US XMM-Newton GOF has streamlined the time-honored XMM-Newton ABC Guide, making it easier to find and use what users may need to analyze their data. It takes into account what type of data a user might have, if they want to reduce the data on their own machine or over the internet with Web Hera, and if they prefer to use the command window or a GUI. The GOF has also included an introduction to analyzing EPIC and RGS spectra, and PN Timing mode data. The guide is provided for free to students, educators, and researchers for educational and research purposes. Try it out at: http://heasarc.gsfc.nasa.gov/docs/xmm/sl/intro.html

  16. The Effect of Depth on Drag During the Streamlined Glide: A Three-Dimensional CFD Analysis

    PubMed Central

    Novais, Maria L.; Silva, António J.; Mantha, Vishveshwar R.; Ramos, Rui J.; Rouboa, Abel I.; Vilas-Boas, J. Paulo; Luís, Sérgio R.; Marinho, Daniel A.

    2012-01-01

    The aim of this study was to analyze the effects of depth on drag during the streamlined glide in swimming using Computational Fluid Dynamics. The Computation Fluid Dynamic analysis consisted of using a three-dimensional mesh of cells that simulates the flow around the considered domain. We used the K-epsilon turbulent model implemented in the commercial code Fluent® and applied it to the flow around a three-dimensional model of an Olympic swimmer. The swimmer was modeled as if he were gliding underwater in a streamlined prone position, with hands overlapping, head between the extended arms, feet together and plantar flexed. Steady-state computational fluid dynamics analyses were performed using the Fluent® code and the drag coefficient and the drag force was calculated for velocities ranging from 1.5 to 2.5 m/s, in increments of 0.50m/s, which represents the velocity range used by club to elite level swimmers during the push-off and glide following a turn. The swimmer model middle line was placed at different water depths between 0 and 1.0 m underwater, in 0.25m increments. Hydrodynamic drag decreased with depth, although after 0.75m values remained almost constant. Water depth seems to have a positive effect on reducing hydrodynamic drag during the gliding. Although increasing depth position could contribute to decrease hydrodynamic drag, this reduction seems to be lower with depth, especially after 0.75 m depth, thus suggesting that possibly performing the underwater gliding more than 0.75 m depth could not be to the benefit of the swimmer. PMID:23487502

  17. A streamlined sustainability assessment tool for improved decision making in the urban water industry.

    PubMed

    Schulz, Matthias; Short, Michael D; Peters, Gregory M

    2012-01-01

    Water supply is a key consideration in sustainable urban planning. Ideally, detailed quantitative sustainability assessments are undertaken during the planning stage to inform the decision-making process. In reality, however, the significant time and cost associated with undertaking such detailed environmental and economic assessments is often cited as a barrier to wider implementation of these key decision support tools, particularly for decisions made at the local or regional government level. In an attempt to overcome this barrier of complexity, 4 water service providers in Melbourne, Australia, funded the development of a publicly available streamlined Environmental Sustainability Assessment Tool, which is aimed at a wide range of decision makers to assist them in broadening the type and number of water servicing options that can be considered for greenfield or backlog developments. The Environmental Sustainability Assessment Tool consists of a simple user interface and draws on life cycle inventory data to allow for rapid estimation of the environmental and economic performance of different water servicing scenarios. Scenario options can then be further prioritized by means of an interactive multicriteria analysis. The intent of this article is to identify the key issues to be considered in a streamlined sustainability assessment tool for the urban water industry, and to demonstrate the feasibility of generating accurate life cycle assessments and life cycle costings, using such a tool. We use a real-life case study example consisting of 3 separate scenarios for a planned urban development to show that this kind of tool can emulate life cycle assessments and life cycle costings outcomes obtained through more detailed studies. This simplified approach is aimed at supporting "sustainability thinking" early in the decision-making process, thereby encouraging more sustainable water and sewerage infrastructure solutions. PMID:21751340

  18. Megagrooves and streamlined bedrock in NW Scotland: The role of ice streams in landscape evolution

    NASA Astrophysics Data System (ADS)

    Bradwell, Tom; Stoker, Martyn; Krabbendam, Maarten

    2008-05-01

    New multibeam bathymetry data, onshore high-resolution elevation data (NEXTMap) and fieldwork in the Ullapool area of NW Scotland reveal large-scale megagrooves and streamlined bedrock forms in a well-defined ˜ 20 km wide zone. The landsystem is typical of a coherent flow corridor within a grounded ice sheet on bedrock-dominated terrain. We describe the morphology of the large-scale features, discuss their likely formation, and consider the wider implications for ice-sheet dynamics. Based on the strongly convergent bedform distribution, the presence of megagrooves and highly elongate bedrock forms, we interpret the erosional landscape to be the signature of a fast-flowing tributary that once fed the The Minch palaeo-ice stream — a major artery of the last British-Irish ice sheet. The exact genesis of bedrock megagrooves remains uncertain, although focused subglacial abrasion is likely to have carved most of the shallow, strongly parallel, features; whilst glacial meltwater may have carved or modified others. Bedform morphometry is used to discriminate zones reflecting the degree of glacial streamlining (elongation ratios < 5:1 or > 5:1). We interpret these zones to represent the transition from potentially cold-based slow ice-sheet flow to warm-based fast flow. Based on these results, and the presence of ribbed moraines, we suggest a bedform continuum model for onset zones of palaeo-ice streams on rigid beds. Rapid spatial bedform evolution is suggested to reflect an increase in subglacial erosive power that may be diagnostic of palaeo-ice-sheet thermal boundaries (i.e. from cold- to warm-based), and is also consistent with the expected downstream increase in ice velocity within an ice-stream onset zone. Finally, this study speculates on the role played by basal meltwater in ice-stream initiation and the role of ice streams and their tributaries in landscape evolution.

  19. The Effect of Depth on Drag During the Streamlined Glide: A Three-Dimensional CFD Analysis.

    PubMed

    Novais, Maria L; Silva, António J; Mantha, Vishveshwar R; Ramos, Rui J; Rouboa, Abel I; Vilas-Boas, J Paulo; Luís, Sérgio R; Marinho, Daniel A

    2012-06-01

    The aim of this study was to analyze the effects of depth on drag during the streamlined glide in swimming using Computational Fluid Dynamics. The Computation Fluid Dynamic analysis consisted of using a three-dimensional mesh of cells that simulates the flow around the considered domain. We used the K-epsilon turbulent model implemented in the commercial code Fluent(®) and applied it to the flow around a three-dimensional model of an Olympic swimmer. The swimmer was modeled as if he were gliding underwater in a streamlined prone position, with hands overlapping, head between the extended arms, feet together and plantar flexed. Steady-state computational fluid dynamics analyses were performed using the Fluent(®) code and the drag coefficient and the drag force was calculated for velocities ranging from 1.5 to 2.5 m/s, in increments of 0.50m/s, which represents the velocity range used by club to elite level swimmers during the push-off and glide following a turn. The swimmer model middle line was placed at different water depths between 0 and 1.0 m underwater, in 0.25m increments. Hydrodynamic drag decreased with depth, although after 0.75m values remained almost constant. Water depth seems to have a positive effect on reducing hydrodynamic drag during the gliding. Although increasing depth position could contribute to decrease hydrodynamic drag, this reduction seems to be lower with depth, especially after 0.75 m depth, thus suggesting that possibly performing the underwater gliding more than 0.75 m depth could not be to the benefit of the swimmer. PMID:23487502

  20. Terradynamically streamlined shapes in animals and robots enhance traversability through densely cluttered terrain.

    PubMed

    Li, Chen; Pullin, Andrew O; Haldane, Duncan W; Lam, Han K; Fearing, Ronald S; Full, Robert J

    2015-08-01

    Many animals, modern aircraft, and underwater vehicles use fusiform, streamlined body shapes that reduce fluid dynamic drag to achieve fast and effective locomotion in air and water. Similarly, numerous small terrestrial animals move through cluttered terrain where three-dimensional, multi-component obstacles like grass, shrubs, vines, and leaf litter also resist motion, but it is unknown whether their body shape plays a major role in traversal. Few ground vehicles or terrestrial robots have used body shape to more effectively traverse environments such as cluttered terrain. Here, we challenged forest-floor-dwelling discoid cockroaches (Blaberus discoidalis) possessing a thin, rounded body to traverse tall, narrowly spaced, vertical, grass-like compliant beams. Animals displayed high traversal performance (79 ± 12% probability and 3.4 ± 0.7 s time). Although we observed diverse obstacle traversal strategies, cockroaches primarily (48 ± 9% probability) used a novel roll maneuver, a form of natural parkour, allowing them to rapidly traverse obstacle gaps narrower than half their body width (2.0 ± 0.5 s traversal time). Reduction of body roundness by addition of artificial shells nearly inhibited roll maneuvers and decreased traversal performance. Inspired by this discovery, we added a thin, rounded exoskeletal shell to a legged robot with a nearly cuboidal body, common to many existing terrestrial robots. Without adding sensory feedback or changing the open-loop control, the rounded shell enabled the robot to traverse beam obstacles with gaps narrower than shell width via body roll. Such terradynamically 'streamlined' shapes can reduce terrain resistance and enhance traversability by assisting effective body reorientation via distributed mechanical feedback. Our findings highlight the need to consider body shape to improve robot mobility in real-world terrain often filled with clutter, and to develop better locomotor-ground contact models to understand

  1. H. R. 779: This Act may be cited as the Natural Gas Enhancement Act of 1991, introduced in the House of Representatives, One Hundred Second Congress, First Session, February 4, 1991

    SciTech Connect

    Not Available

    1991-01-01

    This bill would increase the nation's use of natural gas by simplifying and streamlining current regulatory requirements for new natural gas pipeline construction. Amendments to the Natural Gas Act are described under the following headings: rehearing time limits; environmental contracting; utilization of rulemaking procedures; certificate not required for replacement facilities; unopposed projects; and noncertificate option. Amendments to the Natural Gas Policy Acts of 1978 are described under the headings: interstate pipelines and intrastate pipelines; effective date; and priority projects.

  2. Proposed Model for a Streamlined, Cohesive, and Optimized K-12 STEM Curriculum with a Focus on Engineering

    ERIC Educational Resources Information Center

    Locke, Edward

    2009-01-01

    This article presents a proposed model for a clear description of K-12 age-possible engineering knowledge content, in terms of the selection of analytic principles and predictive skills for various grades, based on the mastery of mathematics and science pre-requisites, as mandated by national or state performance standards; and a streamlined,…

  3. The design and operational development of self-streamlining 2-dimensional flexible walled test sections. Ph.D. Thesis

    NASA Technical Reports Server (NTRS)

    Wolf, S. W. D.

    1984-01-01

    Self streamlining two dimensional flexible walled test sections eliminate the uncertainties found in data from conventional test sections particularly at transonic speeds. The test section sidewalls are rigid, while the floor and ceiling are flexible and are positioned to streamline shapes by a system of jacks, without reference to the model. The walls are therefore self streamlining. Data are taken from the model when the walls are good streamlines such that the inevitable residual wall induced interference is acceptably small and correctable. Successful two dimensional validation testing at low speeds has led to the development of a new transonic flexible walled test section. Tunnel setting times are minimized by the development of a rapid wall setting strategy coupled with on line computer control of wall shapes using motorized jacks. Two dimensional validation testing using symmetric and cambered aerofoils in the Mach number range up to about 0.85 where the walls are just supercritical, shows good agreement with reference data using small height-chord ratios between 1.5 and unity.

  4. STREAMLINED APPROACH FOR ENVIRONMENTAL RESTORATION PLAN FOR CORRECTIVE ACTION UNIT 116: AREA 25 TEST CELL C FACILITYNEVADA TEST SITE, NEVADA

    SciTech Connect

    2006-07-01

    This Streamlined Approach for Environmental Restoration Plan identifies the activities required for the closure of Corrective Action Unit 116, Area 25 Test Cell C Facility. The Test Cell C Facility is located in Area 25 of the Nevada Test Site approximately 25 miles northwest of Mercury, Nevada.

  5. The erosion of streamlined islands, longitudinal grooves and scour marks: Implications to the origin of the Martian outflow channels

    NASA Technical Reports Server (NTRS)

    Komar, P. D.

    1984-01-01

    The diversity of proposed origins for large Martian outflow channels results from the differing interpretations given to the landforms associated with the outflow channels. In an attempt to help limit the possible mechanisms of channel erosion, detailed studies of three of the channel features were done; the streamlined islands, longitudinal grooves and scour marks. This examination involved a comparison of the martian streamlined islands with various streamlined landforms on Earth including those found in the Channel Scabland in large rivers, glacial drumlins, and desert yardangs. The comparisons included statistical analyses of the landform lengths versus widths and positions of maximum width, and an examination of the degree of shape agreement with the geometric lemniscate which was in turn demonstrated to correspond closely with true airfoil shapes. The analyses showed that the shapes of the martian islands correspond closely to the streamlined islands in rivers and the Channel Scabland land. Drumlins show a much smaller correlation. Erosional rock islands formed by glaciers are very much different in shape.

  6. 9 CFR 381.76 - Post-mortem inspection, when required; extent; traditional, Streamlined Inspection System (SIS...

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 9 Animals and Animal Products 2 2011-01-01 2011-01-01 false Post-mortem inspection, when required; extent; traditional, Streamlined Inspection System (SIS), New Line Speed (NELS) Inspection System and the New Turkey Inspection (NTI) System; rate of inspection. 381.76 Section 381.76 Animals and Animal Products FOOD SAFETY AND INSPECTION...

  7. Streamlined Approach for Environmental Restoration Plan for Corrective Action Unit 489: WWII UXO Sites, Tonopah Test Range, Nevada; May 2005

    SciTech Connect

    Bechtel Nevada; U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office

    2005-05-01

    This Streamlined Approach for Environmental Restoration Plan provides the details for the closure of Corrective Action Unit (CAU) 489: WWII UXO Sites, Tonopah Test Range. CAU 489 is located at the Tonopah Test Range and is currently listed in Appendix III of the Federal Facility Agreement and Consent Order of 1996.

  8. 9 CFR 381.76 - Post-mortem inspection, when required; extent; traditional, Streamlined Inspection System (SIS...

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... eviscerated shall be opened so as to expose the organs and the body cavity for proper examination by the... not needed for inspection purposes and are not intended for human food and are condemned. (b)(1) There...; extent; traditional, Streamlined Inspection System (SIS), New Line Speed (NELS) Inspection System and...

  9. 9 CFR 381.76 - Post-mortem inspection, when required; extent; traditional, Streamlined Inspection System (SIS...

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... eviscerated shall be opened so as to expose the organs and the body cavity for proper examination by the... not needed for inspection purposes and are not intended for human food and are condemned. (b)(1) There...; extent; traditional, Streamlined Inspection System (SIS), New Line Speed (NELS) Inspection System and...

  10. 9 CFR 381.76 - Post-mortem inspection, when required; extent; traditional, Streamlined Inspection System (SIS...

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... eviscerated shall be opened so as to expose the organs and the body cavity for proper examination by the... not needed for inspection purposes and are not intended for human food and are condemned. (b)(1) There...; extent; traditional, Streamlined Inspection System (SIS), New Line Speed (NELS) Inspection System and...

  11. Acquisition of Comparison Constructions

    ERIC Educational Resources Information Center

    Hohaus, Vera; Tiemann, Sonja; Beck, Sigrid

    2014-01-01

    This article presents a study on the time course of the acquisition of comparison constructions. The order in which comparison constructions (comparatives, measure phrases, superlatives, degree questions, etc.) show up in English- and German-learning children's spontaneous speech is quite fixed. It is shown to be insufficiently determined by…

  12. High Speed data acquisition

    SciTech Connect

    Cooper, P.S.

    1998-02-01

    A general introduction to high Speed data acquisition system techniques in modern particle physics experiments is given. Examples are drawn from the SELEX(E781) high statistics charmed baryon production and decay experiment now taking data at Fermilab. {copyright} {ital 1998 American Institute of Physics.}

  13. Image Acquisition Context

    PubMed Central

    Bidgood, W. Dean; Bray, Bruce; Brown, Nicolas; Mori, Angelo Rossi; Spackman, Kent A.; Golichowski, Alan; Jones, Robert H.; Korman, Louis; Dove, Brent; Hildebrand, Lloyd; Berg, Michael

    1999-01-01

    Objective: To support clinically relevant indexing of biomedical images and image-related information based on the attributes of image acquisition procedures and the judgments (observations) expressed by observers in the process of image interpretation. Design: The authors introduce the notion of “image acquisition context,” the set of attributes that describe image acquisition procedures, and present a standards-based strategy for utilizing the attributes of image acquisition context as indexing and retrieval keys for digital image libraries. Methods: The authors' indexing strategy is based on an interdependent message/terminology architecture that combines the Digital Imaging and Communication in Medicine (DICOM) standard, the SNOMED (Systematized Nomenclature of Human and Veterinary Medicine) vocabulary, and the SNOMED DICOM microglossary. The SNOMED DICOM microglossary provides context-dependent mapping of terminology to DICOM data elements. Results: The capability of embedding standard coded descriptors in DICOM image headers and image-interpretation reports improves the potential for selective retrieval of image-related information. This favorably affects information management in digital libraries. PMID:9925229

  14. Data Acquisition Backend

    SciTech Connect

    Britton Jr., Charles L.; Ezell, N. Dianne Bull; Roberts, Michael

    2013-10-01

    This document is intended to summarize the development and testing of the data acquisition module portion of the Johnson Noise Thermometry (JNT) system developed at ORNL. The proposed system has been presented in an earlier report [1]. A more extensive project background including the project rationale is available in the initial project report [2].

  15. [Acquisition of arithmetic knowledge].

    PubMed

    Fayol, Michel

    2008-01-01

    The focus of this paper is on contemporary research on the number counting and arithmetical competencies that emerge during infancy, the preschool years, and the elementary school. I provide a brief overview of the evolution of children's conceptual knowledge of arithmetic knowledge, the acquisition and use of counting and how they solve simple arithmetic problems (e.g. 4 + 3). PMID:18198117

  16. Acquisitions List No. 42.

    ERIC Educational Resources Information Center

    Planned Parenthood--World Population, New York, NY. Katherine Dexter McCormick Library.

    The "Acquisitions List" of demographic books and articles is issued every two months by the Katharine Dexter McCormick Library. Divided into two parts, the first contains a list of books most recently acquired by the Library, each one annotated and also marked with the Library call number. The second part consists of a list of annotated articles,…

  17. Acquisitions List No. 43.

    ERIC Educational Resources Information Center

    Planned Parenthood--World Population, New York, NY. Katherine Dexter McCormick Library.

    The "Acquisitions List" of demographic books and articles is issued every two months by the Katharine Dexter McCormick Library. Divided into two parts, the first contains a list of books most recently acquired by the Library, each one annotated and also marked with the Library call number. The second part consists of a list of annotated articles,…

  18. Following Native Language Acquisition.

    ERIC Educational Resources Information Center

    Neiburg, Michael S.

    Native language acquisition is a natural and non-natural stage-by-stage process. The natural first stage is development of speech and listening skills. In this stage, competency is gained in the home environment. The next, non-natural stage is development of literacy, a cultural skill taught in school. Since oral-aural native language development…

  19. Telecommunications and data acquisition

    NASA Technical Reports Server (NTRS)

    Renzetti, N. A. (Editor)

    1981-01-01

    Deep Space Network progress in flight project support, tracking and data acquisition research and technology, network engineering, hardware and software implementation, and operations is reported. In addition, developments in Earth based radio technology as applied to geodynamics, astrophysics, and the radio search for extraterrestrial intelligence are reported.

  20. 48 CFR 352.201-70 - Paperwork Reduction Act.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Contracting Officer's Technical Representative shall be guided by the provisions of 5 CFR Part 1320... 48 Federal Acquisition Regulations System 4 2010-10-01 2010-10-01 false Paperwork Reduction Act. 352.201-70 Section 352.201-70 Federal Acquisition Regulations System HEALTH AND HUMAN SERVICES...

  1. 77 FR 31606 - Privacy Act of 1974; System of Records

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-29

    ... Privacy Act of 1974; System of Records AGENCY: Office of English Language Acquisition, Language..., Office of English Language Acquisition, Language Enhancement and Academic Achievement for Limited English... Fellowship Program, 64 FR 30106-30191 (June 4, 1999). Electronic Access to This Document: The...

  2. 48 CFR 3452.208-72 - Paperwork Reduction Act.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 7 2014-10-01 2014-10-01 false Paperwork Reduction Act. 3452.208-72 Section 3452.208-72 Federal Acquisition Regulations System DEPARTMENT OF EDUCATION... designee within the Department of Education (ED) and the Office of Management and Budget (OMB)....

  3. 48 CFR 3452.208-72 - Paperwork Reduction Act.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 7 2011-10-01 2011-10-01 false Paperwork Reduction Act. 3452.208-72 Section 3452.208-72 Federal Acquisition Regulations System DEPARTMENT OF EDUCATION... designee within the Department of Education (ED) and the Office of Management and Budget (OMB)....

  4. 48 CFR 3452.208-72 - Paperwork Reduction Act.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 7 2013-10-01 2012-10-01 true Paperwork Reduction Act. 3452.208-72 Section 3452.208-72 Federal Acquisition Regulations System DEPARTMENT OF EDUCATION... designee within the Department of Education (ED) and the Office of Management and Budget (OMB)....

  5. 48 CFR 3452.208-72 - Paperwork Reduction Act.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 7 2012-10-01 2012-10-01 false Paperwork Reduction Act. 3452.208-72 Section 3452.208-72 Federal Acquisition Regulations System DEPARTMENT OF EDUCATION... designee within the Department of Education (ED) and the Office of Management and Budget (OMB)....

  6. Sociolinguistics and Language Acquisition.

    ERIC Educational Resources Information Center

    Wolfson, Nessa, Ed.; Judd, Elliot, Ed.

    The following are included in this collection of essays on patterns of rules of speaking, and sociolinguistics and second language learning and teaching: "How to Tell When Someone Is Saying 'No' Revisited" (Joan Rubin); "Apology: A Speech-Act Set" (Elite Olshtain and Andrew Cohen); "Interpreting and Performing Speech Acts in a Second Language: A…

  7. 48 CFR 1426.7103 - The Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) (Superfund...

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Environmental Response, Compensation, and Liability Act (CERCLA) (Superfund Minority Contractors Utilization Report). 1426.7103 Section 1426.7103 Federal Acquisition Regulations System DEPARTMENT OF THE INTERIOR... Environmental Response, Compensation, and Liability Act (CERCLA) (Superfund Minority Contractors...

  8. 48 CFR 1426.7103 - The Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) (Superfund...

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Environmental Response, Compensation, and Liability Act (CERCLA) (Superfund Minority Contractors Utilization Report). 1426.7103 Section 1426.7103 Federal Acquisition Regulations System DEPARTMENT OF THE INTERIOR... Environmental Response, Compensation, and Liability Act (CERCLA) (Superfund Minority Contractors...

  9. 48 CFR 1426.7103 - The Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) (Superfund...

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Environmental Response, Compensation, and Liability Act (CERCLA) (Superfund Minority Contractors Utilization Report). 1426.7103 Section 1426.7103 Federal Acquisition Regulations System DEPARTMENT OF THE INTERIOR... Environmental Response, Compensation, and Liability Act (CERCLA) (Superfund Minority Contractors...

  10. 48 CFR 1426.7103 - The Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) (Superfund...

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Environmental Response, Compensation, and Liability Act (CERCLA) (Superfund Minority Contractors Utilization Report). 1426.7103 Section 1426.7103 Federal Acquisition Regulations System DEPARTMENT OF THE INTERIOR... Environmental Response, Compensation, and Liability Act (CERCLA) (Superfund Minority Contractors...

  11. 48 CFR 1426.7103 - The Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) (Superfund...

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 5 2010-10-01 2010-10-01 false The Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) (Superfund Minority Contractors Utilization... Environmental Response, Compensation, and Liability Act (CERCLA) (Superfund Minority Contractors...

  12. Coordinating Council. Seventh Meeting: Acquisitions

    NASA Technical Reports Server (NTRS)

    1992-01-01

    The theme for this NASA Scientific and Technical Information Program Coordinating Council meeting was Acquisitions. In addition to NASA and the NASA Center for AeroSpace Information (CASI) presentations, the report contains fairly lengthy visuals about acquisitions at the Defense Technical Information Center. CASI's acquisitions program and CASI's proactive acquisitions activity were described. There was a presentation on the document evaluation process at CASI. A talk about open literature scope and coverage at the American Institute of Aeronautics and Astronautics was also given. An overview of the STI Program's Acquisitions Experts Committee was given next. Finally acquisitions initiatives of the NASA STI program were presented.

  13. 33. Perimeter acquisition radar building room #320, perimeter acquisition radar ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    33. Perimeter acquisition radar building room #320, perimeter acquisition radar operations center (PAROC), contains the tactical command and control group equipment required to control the par site. Showing spacetrack monitor console - Stanley R. Mickelsen Safeguard Complex, Perimeter Acquisition Radar Building, Limited Access Area, between Limited Access Patrol Road & Service Road A, Nekoma, Cavalier County, ND

  14. 77 FR 17479 - Formations of, Acquisitions by, and Mergers of Bank Holding Companies

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-26

    ... have applied to the Board for approval, pursuant to the Bank Holding Company Act of 1956 (12 U.S.C... enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking... standards in section 4 of the BHC Act (12 U.S.C. 1843). Unless otherwise noted, nonbanking activities...

  15. Streamlined Approach for Environmental Restoration (SAFER) Plan for Corrective Action Unit 408: Bomblet Target Area Tonopah Test Range (TTR), Nevada, Revision 1

    SciTech Connect

    Mark Krauss

    2010-03-01

    This Streamlined Approach for Environmental Restoration Plan addresses the actions needed to achieve closure of Corrective Action Unit (CAU) 408, Bomblet Target Area (TTR). Corrective Action Unit 408 is located at the Tonopah Test Range and is currently listed in Appendix III of the Federal Facility Agreement and Consent Order. Corrective Action Unit 408 comprises Corrective Action Site TA-55-002-TAB2, Bomblet Target Areas. Clean closure of CAU 408 will be accomplished by removal of munitions and explosives of concern within seven target areas and potential disposal pits. The target areas were used to perform submunitions related tests for the U.S. Department of Energy (DOE). The scope of CAU 408 is limited to submunitions released from DOE activities. However, it is recognized that the presence of other types of unexploded ordnance and munitions may be present within the target areas due to the activities of other government organizations. The CAU 408 closure activities consist of: • Clearing bomblet target areas within the study area. • Identifying and remediating disposal pits. • Collecting verification samples. • Performing radiological screening of soil. • Removing soil containing contaminants at concentrations above the action levels. Based on existing information, contaminants of potential concern at CAU 408 include unexploded submunitions, explosives, Resource Conservation Recovery Act metals, and depleted uranium. Contaminants are not expected to be present in the soil at concentrations above the action levels; however, this will be determined by radiological surveys and verification sample results.

  16. Semantic Approaches to Language Acquisition

    ERIC Educational Resources Information Center

    Stemmer, N.

    1973-01-01

    Critical evaluation of Schlesinger's theory of language acquisition as expounded in Production of Utterances and Language Acquisition'' in The Ontogenesis of Grammar'', p63-101, New York: Academic Press, 1971. (RS)

  17. Data acquisition instruments: Psychopharmacology

    SciTech Connect

    Hartley, D.S. III

    1998-01-01

    This report contains the results of a Direct Assistance Project performed by Lockheed Martin Energy Systems, Inc., for Dr. K. O. Jobson. The purpose of the project was to perform preliminary analysis of the data acquisition instruments used in the field of psychiatry, with the goal of identifying commonalities of data and strategies for handling and using the data in the most advantageous fashion. Data acquisition instruments from 12 sources were provided by Dr. Jobson. Several commonalities were identified and a potentially useful data strategy is reported here. Analysis of the information collected for utility in performing diagnoses is recommended. In addition, further work is recommended to refine the commonalities into a directly useful computer systems structure.

  18. Automatic carrier acquisition system

    NASA Technical Reports Server (NTRS)

    Bunce, R. C. (Inventor)

    1973-01-01

    An automatic carrier acquisition system for a phase locked loop (PLL) receiver is disclosed. It includes a local oscillator, which sweeps the receiver to tune across the carrier frequency uncertainty range until the carrier crosses the receiver IF reference. Such crossing is detected by an automatic acquisition detector. It receives the IF signal from the receiver as well as the IF reference. It includes a pair of multipliers which multiply the IF signal with the IF reference in phase and in quadrature. The outputs of the multipliers are filtered through bandpass filters and power detected. The output of the power detector has a signal dc component which is optimized with respect to the noise dc level by the selection of the time constants of the filters as a function of the sweep rate of the local oscillator.

  19. Advanced Data Acquisition Systems

    NASA Technical Reports Server (NTRS)

    Perotti, J.

    2003-01-01

    Current and future requirements of the aerospace sensors and transducers field make it necessary for the design and development of new data acquisition devices and instrumentation systems. New designs are sought to incorporate self-health, self-calibrating, self-repair capabilities, allowing greater measurement reliability and extended calibration cycles. With the addition of power management schemes, state-of-the-art data acquisition systems allow data to be processed and presented to the users with increased efficiency and accuracy. The design architecture presented in this paper displays an innovative approach to data acquisition systems. The design incorporates: electronic health self-check, device/system self-calibration, electronics and function self-repair, failure detection and prediction, and power management (reduced power consumption). These requirements are driven by the aerospace industry need to reduce operations and maintenance costs, to accelerate processing time and to provide reliable hardware with minimum costs. The project's design architecture incorporates some commercially available components identified during the market research investigation like: Field Programmable Gate Arrays (FPGA) Programmable Analog Integrated Circuits (PAC IC) and Field Programmable Analog Arrays (FPAA); Digital Signal Processing (DSP) electronic/system control and investigation of specific characteristics found in technologies like: Electronic Component Mean Time Between Failure (MTBF); and Radiation Hardened Component Availability. There are three main sections discussed in the design architecture presented in this document. They are the following: (a) Analog Signal Module Section, (b) Digital Signal/Control Module Section and (c) Power Management Module Section. These sections are discussed in detail in the following pages. This approach to data acquisition systems has resulted in the assignment of patent rights to Kennedy Space Center under U.S. patent # 6

  20. Data Acquisition Systems

    NASA Technical Reports Server (NTRS)

    1989-01-01

    Technology developed during a joint research program with Langley and Kinetic Systems Corporation led to Kinetic Systems' production of a high speed Computer Automated Measurement and Control (CAMAC) data acquisition system. The study, which involved the use of CAMAC equipment applied to flight simulation, significantly improved the company's technical capability and produced new applications. With Digital Equipment Corporation, Kinetic Systems is marketing the system to government and private companies for flight simulation, fusion research, turbine testing, steelmaking, etc.

  1. Act resilient.

    PubMed

    Joseph, Genie; Bice-Stephens, Wynona

    2014-01-01

    Attendees have reported changing from being fearful to serene, from listless to energized, from disengaged to connected, and becoming markedly less anxious in a few weeks. Anecdotally, self-reported stress levels have been reduced by over 50% after just one class. Attendees learn not to be afraid of their feelings by working with emotions in a playful manner. When a person can act angry, but separate himself from his personal story, the emotional energy exists in a separate form that is not attached to specific events, and can be more easily dealt with and neutralized. Attendees are taught to "take out the emotional trash" through expressive comedy. They become less intimated by their own emotional intensity and triggers as they learn how even metaphorical buckets of anger, shame, guilt and hurt can be emotionally emptied. The added benefit is that this is accomplished without the disclosure of personal information of the requirement to reexperience past pain which can trigger its own cascade of stress. PMID:24706248

  2. 48 CFR 301.106 - Office of Management and Budget approval under the Paperwork Reduction Act.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 4 2011-10-01 2011-10-01 false Office of Management and Budget approval under the Paperwork Reduction Act. 301.106 Section 301.106 Federal Acquisition Regulations System HEALTH AND HUMAN SERVICES GENERAL HHS ACQUISITION REGULATION SYSTEM Purpose, Authority,...

  3. 48 CFR 301.106 - Office of Management and Budget approval under the Paperwork Reduction Act.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 4 2012-10-01 2012-10-01 false Office of Management and Budget approval under the Paperwork Reduction Act. 301.106 Section 301.106 Federal Acquisition Regulations System HEALTH AND HUMAN SERVICES GENERAL HHS ACQUISITION REGULATION SYSTEM Purpose, Authority,...

  4. 48 CFR 52.204-11 - American Recovery and Reinvestment Act-Reporting Requirements.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 2 2013-10-01 2013-10-01 false American Recovery and Reinvestment Act-Reporting Requirements. 52.204-11 Section 52.204-11 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION (CONTINUED) CLAUSES AND FORMS SOLICITATION PROVISIONS AND CONTRACT CLAUSES Text of Provisions and Clauses...

  5. MDSplus data acquisition system

    SciTech Connect

    Stillerman, J.A.; Fredian, T.W.; Klare, K.; Manduchi, G.

    1997-01-01

    MDSplus, a tree based, distributed data acquisition system, was developed in collaboration with the ZTH Group at Los Alamos National Lab and the RFX Group at CNR in Padua, Italy. It is currently in use at MIT, RFX in Padua, TCV at EPFL in Lausanne, and KBSI in South Korea. MDSplus is made up of a set of X/motif based tools for data acquisition and display, as well as diagnostic configuration and management. It is based on a hierarchical experiment description which completely describes the data acquisition and analysis tasks and contains the results from these operations. These tools were designed to operate in a distributed, client/server environment with multiple concurrent readers and writers to the data store. While usually used over a Local Area Network, these tools can be used over the Internet to provide access for remote diagnosticians and even machine operators. An interface to a relational database is provided for storage and management of processed data. IDL is used as the primary data analysis and visualization tool. IDL is a registered trademark of Research Systems Inc. {copyright} {ital 1996 American Institute of Physics.}

  6. The Acquisition of Colour Terms.

    ERIC Educational Resources Information Center

    Andrich, Gail Rex; Tager-Flusberg, Helen

    1986-01-01

    Reports two studies which investigated the acquisition of color terms by preschool children. The first was designed to clarify the role of certain conceptual factors in the acquisition of color terms. The second explored how input may interact with these conceptual factors and help to guide the acquisition of color words. (SED)

  7. First Language Acquisition and Teaching

    ERIC Educational Resources Information Center

    Cruz-Ferreira, Madalena

    2011-01-01

    "First language acquisition" commonly means the acquisition of a single language in childhood, regardless of the number of languages in a child's natural environment. Language acquisition is variously viewed as predetermined, wondrous, a source of concern, and as developing through formal processes. "First language teaching" concerns schooling in…

  8. Calculation of Compressible Flows past Aerodynamic Shapes by Use of the Streamline Curvature

    NASA Technical Reports Server (NTRS)

    Perl, W

    1947-01-01

    A simple approximate method is given for the calculation of isentropic irrotational flows past symmetrical airfoils, including mixed subsonic-supersonic flows. The method is based on the choice of suitable values for the streamline curvature in the flow field and the subsequent integration of the equations of motion. The method yields limiting solutions for potential flow. The effect of circulation is considered. A comparison of derived velocity distributions with existing results that are based on calculation to the third order in the thickness ratio indicated satisfactory agreement. The results are also presented in the form of a set of compressibility correction rules that lie between the Prandtl-Glauert rule and the von Karman-Tsien rule (approximately). The different rules correspond to different values of the local shape parameter square root sign YC sub a, in which Y is the ordinate and C sub a is the curvature at a point on an airfoil. Bodies of revolution, completely supersonic flows, and the significance of the limiting solutions for potential flow are also briefly discussed.

  9. Streamlined method for parallel identification of single domain antibodies to membrane receptors on whole cells

    PubMed Central

    Rossotti, Martín; Tabares, Sofía; Alfaya, Lucía; Leizagoyen, Carmen; Moron, Gabriel; González-Sapienza, Gualberto

    2015-01-01

    BACKGROUND Owing to their minimal size, high production yield, versatility and robustness, the recombinant variable domain (nanobody) of camelid single chain antibodies are valued affinity reagents for research, diagnostic, and therapeutic applications. While their preparation against purified antigens is straightforward, the generation of nanobodies to difficult targets such as multi-pass or complex membrane cell receptors remains challenging. Here we devised a platform for high throughput identification of nanobodies to cell receptor based on the use of a biotin handle. METHODS Using a biotin-acceptor peptide tag, the in vivo biotinylation of nanobodies in 96 well culture blocks was optimized allowing their parallel analysis by flow cytometry and ELISA, and their direct used for pull-down/MS target identification. RESULTS The potential of this strategy was demonstrated by the selection and characterization of panels of nanobodies to Mac-1 (CD11b/CD18), MHC II and the mouse Ly-5 leukocyte common antigen (CD45) receptors, from a VHH library obtained from a llama immunized with mouse bone marrow derived dendritic cells. By on and off switching of the addition of biotin, the method also allowed the epitope binning of the selected Nbs directly on cells. CONCLUSIONS This strategy streamline the selection of potent nanobodies to complex antigens, and the selected nanobodies constitute ready-to-use biotinylated reagents. GENERAL SIGNIFICANCE This method will accelerate the discovery of nanobodies to cell membrane receptors which comprise the largest group of drug and analytical targets. PMID:25819371

  10. Tuning fresh: radiation through rewiring of central metabolism in streamlined bacteria.

    PubMed

    Eiler, Alexander; Mondav, Rhiannon; Sinclair, Lucas; Fernandez-Vidal, Leyden; Scofield, Douglas G; Schwientek, Patrick; Martinez-Garcia, Manuel; Torrents, David; McMahon, Katherine D; Andersson, Siv Ge; Stepanauskas, Ramunas; Woyke, Tanja; Bertilsson, Stefan

    2016-08-01

    Most free-living planktonic cells are streamlined and in spite of their limitations in functional flexibility, their vast populations have radiated into a wide range of aquatic habitats. Here we compared the metabolic potential of subgroups in the Alphaproteobacteria lineage SAR11 adapted to marine and freshwater habitats. Our results suggest that the successful leap from marine to freshwaters in SAR11 was accompanied by a loss of several carbon degradation pathways and a rewiring of the central metabolism. Examples for these are C1 and methylated compounds degradation pathways, the Entner-Doudouroff pathway, the glyoxylate shunt and anapleuretic carbon fixation being absent from the freshwater genomes. Evolutionary reconstructions further suggest that the metabolic modules making up these important freshwater metabolic traits were already present in the gene pool of ancestral marine SAR11 populations. The loss of the glyoxylate shunt had already occurred in the common ancestor of the freshwater subgroup and its closest marine relatives, suggesting that the adaptation to freshwater was a gradual process. Furthermore, our results indicate rapid evolution of TRAP transporters in the freshwater clade involved in the uptake of low molecular weight carboxylic acids. We propose that such gradual tuning of metabolic pathways and transporters toward locally available organic substrates is linked to the formation of subgroups within the SAR11 clade and that this process was critical for the freshwater clade to find and fix an adaptive phenotype. PMID:26784354

  11. VELOCITIES AND STREAMLINES ON A BLADE-TO-BLADE STREAM SURFACE OF A TANDEM BLADE TURBOMACHINE

    NASA Technical Reports Server (NTRS)

    Katsanis, T.

    1994-01-01

    This computer program gives the blade-to-blade solution of the two-dimensional, subsonic, compressible (or incompressible), nonviscous flow problem for a circular or straight infinite cascade of tandem or slotted turbomachine blades. The blades may be fixed or rotating. The flow may be axial, radial , or mixed. The method of solution is based on the stream function using an iterative solution of nonlinear finite-difference equations. These equations are solved using two major levels of iteration. The inner iteration consists of the solution of simultaneous linear equations by successive over-relaxation, using an estimated optimum over-relaxation factor. The outer iteration then changes the coefficients of the simultaneous equations to correct for compressibility. The program input consists of the basic blade geometry, the meridional stream channel coordinates, fluid stagnation conditions, weight flow and flow split through the slot, and inlet and outlet flow angles. The output includes blade surface velocities, velocity magnitude and direction throughout the passage, and the streamline coordinates.

  12. Comparative Analysis of Wolbachia Genomes Reveals Streamlining and Divergence of Minimalist Two-Component Systems

    PubMed Central

    Christensen, Steen; Serbus, Laura Renee

    2015-01-01

    Two-component regulatory systems are commonly used by bacteria to coordinate intracellular responses with environmental cues. These systems are composed of functional protein pairs consisting of a sensor histidine kinase and cognate response regulator. In contrast to the well-studied Caulobacter crescentus system, which carries dozens of these pairs, the streamlined bacterial endosymbiont Wolbachia pipientis encodes only two pairs: CckA/CtrA and PleC/PleD. Here, we used bioinformatic tools to compare characterized two-component system relays from C. crescentus, the related Anaplasmataceae species Anaplasma phagocytophilum and Ehrlichia chaffeensis, and 12 sequenced Wolbachia strains. We found the core protein pairs and a subset of interacting partners to be highly conserved within Wolbachia and these other Anaplasmataceae. Genes involved in two-component signaling were positioned differently within the various Wolbachia genomes, whereas the local context of each gene was conserved. Unlike Anaplasma and Ehrlichia, Wolbachia two-component genes were more consistently found clustered with metabolic genes. The domain architecture and key functional residues standard for two-component system proteins were well-conserved in Wolbachia, although residues that specify cognate pairing diverged substantially from other Anaplasmataceae. These findings indicate that Wolbachia two-component signaling pairs share considerable functional overlap with other α-proteobacterial systems, whereas their divergence suggests the potential for regulatory differences and cross-talk. PMID:25809075

  13. Streamlined design and self reliant hardware for active control of precision space structures

    NASA Technical Reports Server (NTRS)

    Hyland, David C.; King, James A.; Phillips, Douglas J.

    1994-01-01

    Precision space structures may require active vibration control to satisfy critical performance requirements relating to line-of-sight pointing accuracy and the maintenance of precise, internal alignments. In order for vibration control concepts to become operational, it is necessary that their benefits be practically demonstrated in large scale ground-based experiments. A unique opportunity to carry out such demonstrations on a wide variety of experimental testbeds was provided by the NASA Control-Structure Integration (CSI) Guest Investigator (GI) Program. This report surveys the experimental results achieved by the Harris Corporation GI team on both Phases 1 and 2 of the program and provides a detailed description of Phase 2 activities. The Phase 1 results illustrated the effectiveness of active vibration control for space structures and demonstrated a systematic methodology for control design, implementation test. In Phase 2, this methodology was significantly streamlined to yield an on-site, single session design/test capability. Moreover, the Phase 2 research on adaptive neural control techniques made significant progress toward fully automated, self-reliant space structure control systems. As a further thrust toward productized, self-contained vibration control systems, the Harris Phase II activity concluded with experimental demonstration of new vibration isolation hardware suitable for a wide range of space-flight and ground-based commercial applications.The CSI GI Program Phase 1 activity was conducted under contract NASA1-18872, and the Phase 2 activity was conducted under NASA1-19372.

  14. Bedforms as Biocatalytic Filters: A Pumping and Streamline Segregation Model for Nitrate Removal in Permeable Sediments.

    PubMed

    Azizian, Morvarid; Grant, Stanley B; Kessler, Adam J; Cook, Perran L M; Rippy, Megan A; Stewardson, Michael J

    2015-09-15

    Bedforms are a focal point of carbon and nitrogen cycling in streams and coastal marine ecosystems. In this paper, we develop and test a mechanistic model, the "pumping and streamline segregation" or PASS model, for nitrate removal in bedforms. The PASS model dramatically reduces computational overhead associated with modeling nitrogen transformations in bedforms and reproduces (within a factor of 2 or better) previously published measurements and models of biogeochemical reaction rates, benthic fluxes, and in-sediment nutrient and oxygen concentrations. Application of the PASS model to a diverse set of marine and freshwater environments indicates that (1) physical controls on nitrate removal in a bedform include the pore water flushing rate, residence time distribution, and relative rates of respiration and transport (as represented by the Damkohler number); (2) the biogeochemical pathway for nitrate removal is an environment-specific combination of direct denitrification of stream nitrate and coupled nitrification-denitrification of stream and/or sediment ammonium; and (3) permeable sediments are almost always a net source of dissolved inorganic nitrogen. The PASS model also provides a mechanistic explanation for previously published empirical correlations showing denitrification velocity (N2 flux divided by nitrate concentration) declines as a power law of nitrate concentration in a stream (Mulholland et al. Nature, 2008, 452, 202-205). PMID:26287447

  15. Symbiotic Adaptation Drives Genome Streamlining of the Cyanobacterial Sponge Symbiont “Candidatus Synechococcus spongiarum”

    PubMed Central

    Gao, Zhao-Ming; Wang, Yong; Tian, Ren-Mao; Wong, Yue Him; Batang, Zenon B.; Al-Suwailem, Abdulaz M.; Bajic, Vladimir B.; Qian, Pei-Yuan

    2014-01-01

    ABSTRACT “Candidatus Synechococcus spongiarum” is a cyanobacterial symbiont widely distributed in sponges, but its functions at the genome level remain unknown. Here, we obtained the draft genome (1.66 Mbp, 90% estimated genome recovery) of “Ca. Synechococcus spongiarum” strain SH4 inhabiting the Red Sea sponge Carteriospongia foliascens. Phylogenomic analysis revealed a high dissimilarity between SH4 and free-living cyanobacterial strains. Essential functions, such as photosynthesis, the citric acid cycle, and DNA replication, were detected in SH4. Eukaryoticlike domains that play important roles in sponge-symbiont interactions were identified exclusively in the symbiont. However, SH4 could not biosynthesize methionine and polyamines and had lost partial genes encoding low-molecular-weight peptides of the photosynthesis complex, antioxidant enzymes, DNA repair enzymes, and proteins involved in resistance to environmental toxins and in biosynthesis of capsular and extracellular polysaccharides. These genetic modifications imply that “Ca. Synechococcus spongiarum” SH4 represents a low-light-adapted cyanobacterial symbiont and has undergone genome streamlining to adapt to the sponge’s mild intercellular environment. PMID:24692632

  16. Comparative transcriptome analysis reveals insights into the streamlined genomes of haplosclerid demosponges.

    PubMed

    Guzman, Christine; Conaco, Cecilia

    2016-01-01

    Sponges (Porifera) are one of the most ancestral metazoan groups. They are characterized by a simple body plan lacking the true tissues and organ systems found in other animals. Members of this phylum display a remarkable diversity of form and function and yet little is known about the composition and complexity of their genomes. In this study, we sequenced the transcriptomes of two marine haplosclerid sponges belonging to Demospongiae, the largest and most diverse class within phylum Porifera, and compared their gene content with members of other sponge classes. We recovered 44,693 and 50,067 transcripts expressed in adult tissues of Haliclona amboinensis and Haliclona tubifera, respectively. These transcripts translate into 20,280 peptides in H. amboinensis and 18,000 peptides in H. tubifera. Genes associated with important signaling and metabolic pathways, regulatory networks, as well as genes that may be important in the organismal stress response, were identified in the transcriptomes. Futhermore, lineage-specific innovations were identified that may be correlated with observed sponge characters and ecological adaptations. The core gene complement expressed within the tissues of adult haplosclerid demosponges may represent a streamlined and flexible genetic toolkit that underlies the ecological success and resilience of sponges to environmental stress. PMID:26738846

  17. An automated perfusion bioreactor for the streamlined production of engineered osteogenic grafts.

    PubMed

    Ding, Ming; Henriksen, Susan S; Wendt, David; Overgaard, Søren

    2016-04-01

    A computer-controlled perfusion bioreactor was developed for the streamlined production of engineered osteogenic grafts. This system automated the required bioprocesses, from the initial filling of the system through the phases of cell seeding and prolonged cell/tissue culture. Flow through chemo-optic micro-sensors allowed to non-invasively monitor the levels of oxygen and pH in the perfused culture medium throughout the culture period. To validate its performance, freshly isolated ovine bone marrow stromal cells were directly seeded on porous scaffold granules (hydroxyapatite/β-tricalcium-phosphate/poly-lactic acid), bypassing the phase of monolayer cell expansion in flasks. Either 10 or 20 days after culture, engineered cell-granule grafts were implanted in an ectopic mouse model to quantify new bone formation. After four weeks of implantation, histomorphometry showed more bone in bioreactor-generated grafts than cell-free granule controls, while bone formation did not show significant differences between 10 days and 20 days of incubation. The implanted granules without cells had no bone formation. This novel perfusion bioreactor has revealed the capability of activation larger viable bone graft material, even after shorter incubation time of graft material. This study has demonstrated the feasibility of engineering osteogenic grafts in an automated bioreactor system, laying the foundation for a safe, regulatory-compliant, and cost-effective manufacturing process. PMID:25952142

  18. Filaments in curved streamlines: rapid formation of Staphylococcus aureus biofilm streamers

    NASA Astrophysics Data System (ADS)

    Kim, Minyoung Kevin; Drescher, Knut; Pak, On Shun; Bassler, Bonnie L.; Stone, Howard A.

    2014-06-01

    Biofilms are surface-associated conglomerates of bacteria that are highly resistant to antibiotics. These bacterial communities can cause chronic infections in humans by colonizing, for example, medical implants, heart valves, or lungs. Staphylococcus aureus, a notorious human pathogen, causes some of the most common biofilm-related infections. Despite the clinical importance of S. aureus biofilms, it remains mostly unknown how physical effects, in particular flow, and surface structure influence biofilm dynamics. Here we use model microfluidic systems to investigate how environmental factors, such as surface geometry, surface chemistry, and fluid flow affect biofilm development of S. aureus. We discovered that S. aureus rapidly forms flow-induced, filamentous biofilm streamers, and furthermore if surfaces are coated with human blood plasma, streamers appear within minutes and clog the channels more rapidly than if the channels are uncoated. To understand how biofilm streamer filaments reorient in flows with curved streamlines to bridge the distances between corners, we developed a mathematical model based on resistive force theory of slender filaments. Understanding physical aspects of biofilm formation of S. aureus may lead to new approaches for interrupting biofilm formation of this pathogen.

  19. Radiative transfer equation modeling by streamline diffusion modified continuous Galerkin method

    NASA Astrophysics Data System (ADS)

    Long, Feixiao; Li, Fengyan; Intes, Xavier; Kotha, Shiva P.

    2016-03-01

    Optical tomography has a wide range of biomedical applications. Accurate prediction of photon transport in media is critical, as it directly affects the accuracy of the reconstructions. The radiative transfer equation (RTE) is the most accurate deterministic forward model, yet it has not been widely employed in practice due to the challenges in robust and efficient numerical implementations in high dimensions. Herein, we propose a method that combines the discrete ordinate method (DOM) with a streamline diffusion modified continuous Galerkin method to numerically solve RTE. Additionally, a phase function normalization technique was employed to dramatically reduce the instability of the DOM with fewer discrete angular points. To illustrate the accuracy and robustness of our method, the computed solutions to RTE were compared with Monte Carlo (MC) simulations when two types of sources (ideal pencil beam and Gaussian beam) and multiple optical properties were tested. Results show that with standard optical properties of human tissue, photon densities obtained using RTE are, on average, around 5% of those predicted by MC simulations in the entire/deeper region. These results suggest that this implementation of the finite element method-RTE is an accurate forward model for optical tomography in human tissues.

  20. Localized Plasticity in the Streamlined Genomes of Vinyl Chloride Respiring Dehalococcoides

    SciTech Connect

    McMurdie, Paul J.; Behrens, Sebastien F.; Muller, Jochen A.; Goke, Jonathan; Ritalahti, Kirsti M.; Wagner, Ryan; Goltsman, Eugene; Lapidus, Alla; Holmes, Susan; Loffler, Frank E.; Spormann, Alfred M.

    2009-06-30

    Vinyl chloride (VC) is a human carcinogen and widespread priority pollutant. Here we report the first, to our knowledge, complete genome sequences of microorganisms able to respire VC, Dehalococcoides sp. strains VS and BAV1. Notably, the respective VC reductase encoding genes, vcrAB and bvcAB, were found embedded in distinct genomic islands (GEIs) with different predicted integration sites, suggesting that these genes were acquired horizontally and independently by distinct mechanisms. A comparative analysis that included two previously sequenced Dehalococcoides genomes revealed a contextually conserved core that is interrupted by two high plasticity regions (HPRs) near the Ori. These HPRs contain the majority of GEIs and strain-specific genes identified in the four Dehalococcoides genomes, an elevated number of repeated elements including insertion sequences (IS), as well as 91 of 96 rdhAB, genes that putatively encode terminal reductases in organohalide respiration. Only three core rdhA orthologous groups were identified, and only one of these groups is supported by synteny. The low number of core rdhAB, contrasted with the high rdhAB numbers per genome (up to 36 in strain VS), as well as their colocalization with GEIs and other signatures for horizontal transfer, suggests that niche adaptation via organohalide respiration is a fundamental ecological strategy in Dehalococccoides. This adaptation has been exacted through multiple mechanisms of recombination that are mainly confined within HPRs of an otherwise remarkably stable, syntenic, streamlined genome among the smallest of any free-living microorganism.