Sample records for labor force clf

  1. Cross-National Patterns of Labor Force Withdrawal*

    E-Print Network [OSTI]

    Huang, Jianyu

    stoppage mean receipt of retirement income, and vice versa? ° Does retirement mean full work stoppage, industrialized nations. Between 1950 and 1990, for example, the life expectancies for men and women in the United women) have been leaving the labor force earlier and earlier in these same countries (OECD 1995a, Table

  2. Health status and the labor force participation decisions of married couples

    E-Print Network [OSTI]

    Lin, Peng

    2009-05-15T23:59:59.000Z

    This thesis examines the labor force participation decisions of married couples, and special attention is paid to a spouse’s health conditions affecting their own and the spouse’s labor force participation decision. I used the Health and Retirement...

  3. PAYMENT FOR ENVIRONMENTAL SERVICE TO ENHANCE RESOURCE USE EFFICIENCY AND LABOR FORCE PARTICIPATION IN MANAGING

    E-Print Network [OSTI]

    Walter, M.Todd

    continual large investment costs both in terms of human capital and financial resources. The researchPAYMENT FOR ENVIRONMENTAL SERVICE TO ENHANCE RESOURCE USE EFFICIENCY AND LABOR FORCE PARTICIPATION specific goals. The first is to estimate households' willingness to pay (WTP) to establish PES for upland

  4. The relationship between parental labor force participation and adolescents' dietary intake and risks to cardiovascular health

    E-Print Network [OSTI]

    Godwin, Anne Louise

    1997-01-01T23:59:59.000Z

    ' intake of vitamin Biq regressed on mothers' work history and mothers' work importance 104 CHAPTER I INTRODUCTION Aspects of occupational life and family life interact in a variety of complex manners For many people in the American society, labor...

  5. Essays on Married Women Labor Supply

    E-Print Network [OSTI]

    Li, Xinrong

    2012-02-14T23:59:59.000Z

    One of the very interesting demographic features in the US over the last three decades of the 20th century is the increase of the married women labor force participation rate. Over the same period, estimated labor supply elasticity varies...

  6. Labor Relations

    Broader source: Energy.gov [DOE]

    Addressing Poor Performance What Happens if an Employee’s Performance is Below the Meets Expectations (ME) level? Any time during the appraisal period an employee demonstrates that he/she is performing below the ME level in at least one critical element, the Rating Official should contact his/her Human Resources Office for guidance and: •If performance is at the Needs Improvement (NI) level; issue the employee a Performance Assistance Plan (PAP); or •If performance is at the Fails to Meet Expectations (FME) level; issue the employee a Performance Improvement Plan (PIP). Department of Energy Headquarters and The National Treasury Employees Union (NTEU) Collective Bargaining Agreement The National Treasury Employees Union (NTEU) is the exclusive representative of bargaining unit employees at the Department of Energy Headquarters offices in the Washington DC metropolitan area. The terms and conditions of this agreement have been negotiated by DOE and NTEU, and prescribe their respective rights and obligations in matters related to conditions of employment. Headquarters 1187 Request For Payroll Deductions For Labor Organization Dues The Request for Payroll Deduction for Labor Organization Dues (SF-1187) permits eligible employees, who are members of the National Treasury Employees Union (NTEU), to authorize voluntary allotments from their compensation. Headquarters 1188 Cancellation Of Payroll Deductions For Labor Organization Dues The Cancellation of Payroll Deductions for Labor Organizations Dues (SF-1188) permits eligible employees, who are members of the National Treasury Employees Union (NTEU), to cancel dues allotments. The National Treasury Employees Union, Collective Bargaining Agreement, Article 9 – Dues Withholding This article is for the purpose of permitting eligible employees, who are members of the National Treasury Employees Union (NTEU), to authorize voluntary allotments from their compensation.

  7. Essays in Labor Economics

    E-Print Network [OSTI]

    Freeman, Donald Eric

    2010-01-01T23:59:59.000Z

    staff at IRLE and the Economics Depart- ment, especiallyof New Employees,” Review of Economics and Statistics, 1985,Firm Level,” Journal of Labor Economics, 1993, 11, 442–470.

  8. Labor dispute settlements

    E-Print Network [OSTI]

    Hill, Walter Ray

    1954-01-01T23:59:59.000Z

    problem in Amer1can history. The organization of the first labor unions expanded labor's quest for better working conditions~ shorter working hours, and better pay. Through the years 1t has been difficult for both unions and management~ each fighting... the other~ to gain he power and prestige that has been desired, Enormous amounts of property have been da. . aged, and in some cases even death has beon the result of physical violence in the fight for labor recognition over the past years, Numerous...

  9. Essays in labor economics

    E-Print Network [OSTI]

    Williams, Tyler (Tyler Kenneth)

    2013-01-01T23:59:59.000Z

    I addressed three questions in Labor Economics, using experimental and quasi-experimental variation to determine causality. In the first chapter, I ask whether playing longer in the NFL increases mortality in retirement. ...

  10. Standard costs for labor

    E-Print Network [OSTI]

    Khan, Mohammed Nurul Absar

    1960-01-01T23:59:59.000Z

    STANDARD COSTS FOR LABOR A Thesis By MD. NURUL ABSAR KHAN Submitted to the Graduate School of the Agricultural and Mechanical College of Texms in partial fulfillment of the requirements for the degree of MASTER OF BUSINESS ADMINISTRATION... January 1960 Ma/or Sub)acts Accounting STANOAHD COSTS FOR LABOR ND, NURUL ABSAR KHAN Approved as t style and content bys Chairman of Committee Head of Hepartment January 1960 The author acknowledges his indebtedness to Mr. T. M. Leland, Mr. T. D...

  11. Healthy time, home production, and labor supply: The effect of health shocks on time use in China

    E-Print Network [OSTI]

    Liu, Jenny Xin

    2010-01-01T23:59:59.000Z

    the labor force, or early retirement, then social insuranceis often linked to early retirement for more elderly workinghealth can lead to early retirement and greater demand for

  12. Learning in the labor market

    E-Print Network [OSTI]

    Li, Jin, Ph. D. Massachusetts Institute of Technology

    2007-01-01T23:59:59.000Z

    This thesis is a collection of three independent essays that study the implication of learning on labor mobility, labor supply, wage distribution, wage dynamics, and allocations of workers under different assumptions about ...

  13. Three essays in labor economics

    E-Print Network [OSTI]

    Tong, Patricia K.

    2010-01-01T23:59:59.000Z

    home outcomes. Health Economics 7: 639-653. Spector WD,Journal of Labor Economics, Vol 11(4), pp. 629-Three Essays in Labor Economics A dissertation submitted in

  14. The impact of crew mix on productivity and labor cost of a construction work activity

    E-Print Network [OSTI]

    Grosskopf, Mark Westly

    1988-01-01T23:59:59.000Z

    In the conduct of construction, situations may arise where a shortage of craftsmen forces crew compositions with a larger than desirable proportion of unskilled workers to do the work that must be done. The net effect on total labor cost...

  15. Beyond Unions, Notwithstanding Labor Law

    E-Print Network [OSTI]

    Loudon, Catherine

    regime created by the National Labor Relations Act of 1935 (NLRA)1--once core elements of the nation, enforcement strategies, and rulemaking abilities.4 The labor law itself has been transformed into a weapon movement is critical to achieving a more egalitarian distribution of wealth. As the NLRA's statement

  16. Labor Market Access and Labor Market Outcomes for Urban Youth

    E-Print Network [OSTI]

    O'Regan, Katherine M.; Quigley, John M.

    1991-01-01T23:59:59.000Z

    Miller, Vincent P. and John M. Quigley, 1990, Segregation byRegan, Katherine M. and John M. Quigley, 1990, Labor marketKatherine M. O’Regan John M. Quigley November1991 Reprint,

  17. Attachment 3: Hourly Labor Rate Proposal, attachment 3, RFP RHT...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Hourly Labor Rate Proposal RFP RHT-5-52358 Basic Period - Execution through 12 Months Labor Category Base Rate Hourly Labor Overhead % Fringe Benefits % General & Admin. Exp. %...

  18. How Can Child Labor Lead to an Increase in Human Capital of Child Laborers and What Are Policy Implications?

    E-Print Network [OSTI]

    Luong, Quoc Viet

    2011-01-01T23:59:59.000Z

    52 APPENDIX 1: A STORY OF KYRGYZSTAN - CHILDREN LABOR TO PAYReport APPENDIX 1: A STORY OF KYRGYZSTAN - CHILDREN LABOR TOPAY SCHOOL FEES KYRGYZSTAN: Children labor to pay school

  19. Negotiating with Labor under Financial Distress

    E-Print Network [OSTI]

    Benmelech, Efraim

    We analyze how firms renegotiate labor contracts to extract concessions from labor. While anecdotal evidence suggests that firms tend to renegotiate wages downward in times of financial distress, there is no empirical ...

  20. Essays on economies with heterogeneous labor

    E-Print Network [OSTI]

    Lehr, Brandon Charles

    2010-01-01T23:59:59.000Z

    In this thesis, I study two different economies that consist of heterogeneous labor. By allowing for differences among individuals where previous analyses restricted attention to homogeneous labor, I am able to understand ...

  1. Public Preschooling and Maternal Labor Force Participation in Rural India.

    E-Print Network [OSTI]

    Jain, Monica

    2013-01-01T23:59:59.000Z

    expenditure in india, 2005-06. Technical report, Ministry ofhow significant it is? In 2005-06, the female casual laborerconsumer expenditure in 2005-06 was Rs 625 (USD 12.5) in

  2. Labor Force Position of Latino Immigrants in California

    E-Print Network [OSTI]

    Ortiz, Vilma

    1995-01-01T23:59:59.000Z

    important for men than women and vice versa? The data t o bewomen? some types of factors more important for men than ivomun and vice versa?

  3. Solar Installation Labor Market Analysis

    SciTech Connect (OSTI)

    Friedman, B.; Jordan, P.; Carrese, J.

    2011-12-01T23:59:59.000Z

    The potential economic benefits of the growing renewable energy sector have led to increased federal, state, and local investments in solar industries, including federal grants for expanded workforce training for U.S. solar installers. However, there remain gaps in the data required to understand the size and composition of the workforce needed to meet the demand for solar power. Through primary research on the U.S. solar installation employer base, this report seeks to address that gap, improving policymakers and other solar stakeholders understanding of both the evolving needs of these employers and the economic opportunity associated with solar market development. Included are labor market data covering current U.S. employment, expected industry growth, and employer skill preferences for solar installation-related occupations. This study offers an in-depth look at the solar installation sectors. A study published by the Solar Foundation in October 2011 provides a census of labor data across the entire solar value chain.

  4. Climate forcing Climate forcing

    E-Print Network [OSTI]

    MacKinnon, Jennifer

    parameters (solar distance factors) solar luminosity moon orbit volcanoes and other geothermal sources,000 years (large panels) and since 1750 (inset panels). Measurements are shown from ice cores (symbols forcings are shown on the right hand axes of the large panels. {Figure 6.4} !"#$#%&'(!&#)$&*$+#$,-.$/0

  5. LABOR Srl | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer Plant Jump to: navigation, search GEOTHERMALTexas:Kuju Kanko HotelKwitherbee'sGarde IncLABOR

  6. Labor and the Elderly in the Welfare Retrenchment Era: Institutions and Collective Action in the Public Pension Reforms of Affluent Democracies

    E-Print Network [OSTI]

    Fernandez, Juan J.

    2009-01-01T23:59:59.000Z

    Bernhard. 2006. Reforming Early Retirement in Europe, JapanBarry Alan. 1987. "Early Retirement as a Labor Force Policy:Age Pension and Early Retirement Schemes in OECD Countries."

  7. Sandia National Laboratories: improve labor productivity

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    labor productivity Fabrication of AMI Demonstration Blade Begun On September 10, 2013, in Energy, News, News & Events, Partnership, Renewable Energy, Wind Energy The Advanced...

  8. Office of Workforce Policy and Labor Relations

    E-Print Network [OSTI]

    Wang, Z. Jane

    Office of Workforce Policy and Labor Relations 391 Pine Tree Road Ithaca, NY 14853-2801 t. 607.254-7232

  9. Department of Energy Labor Relations and Standards

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2014-02-06T23:59:59.000Z

    The change would be to remove Chapter I, Labor Relations, and Chapter II Labor Standards from DOE O 350.1 and develop DOE O DOE O 350.3, which will cancel and supersede Chapters I and II in DOE O 350.1. Content of the two chapters will be updated to reflect the Secretarial determination transferring functions for contractor labor relations and labor standards from the Office of Legacy Management to the Office of General Counsel. CRDs for those chapters will also be removed.

  10. STUDENT LABOR POSITION DESCRIPTION Forestry Department

    E-Print Network [OSTI]

    Baltisberger, Jay H.

    approved STUDENT LABOR POSITION DESCRIPTION Forestry Department Most Recently Updated 10/17/00 Position Title: Student Forestry Aid Must work 10 hrs/wk. I. Grade Level: 1­3 (includes full-time, summer and other holiday labor positions) II. Description: A. The following are the essential duties for a Forestry

  11. Between adaptation and resistance : labor responses to globalization in France

    E-Print Network [OSTI]

    Ancelovici, Marcos, 1971-

    2008-01-01T23:59:59.000Z

    This dissertation aims at accounting for labor responses to globalization in France. It addresses this issue through a comparative study of two labor organizations-the French Democratic Labor Confederation (CFDT) and the ...

  12. 14.661 Labor Economics I, Fall 2006

    E-Print Network [OSTI]

    Pischke, Jorn-Steffen

    Neoclassical analysis of the labor market and its institutions. A systematic development of the theory of labor supply, labor demand, and human capital. Topics discussed also include wage and employment determination, ...

  13. A feminist perspective on the school-to-labor pipeline

    E-Print Network [OSTI]

    Hextrum, Kirsten

    2014-01-01T23:59:59.000Z

    on the School-to-Labor Pipeline Collins, P. (1986) Learningon the School-to-Labor Pipeline Leonardo, Z. (2010).on the School-to-Labor Pipeline Kirsten Hextrum 1 University

  14. Combating Child Labor through DESTINO - Reducing Child Labor in Panama: An Impact Evaluation of a Department of Labor-Funded Initiative

    E-Print Network [OSTI]

    Andisha, Nasir; Chiquito-Saban, Oscar; Emmerich, Eduardo; Figueroa, Aurelia; Jiang, Yuewen; Hui-Lee, Jun; Manning, Darren; Ortega-Sanchez, Alejandra

    2009-01-01T23:59:59.000Z

    Reducing Child Labor in Panama: An Impact Evaluation of a Department of Labor-Funded Initiative ___________________________________________________ Nasir Andisha Oscar Chiquito-Saban Eduardo Emmerich Aurelia Figueroa... Gawande Helen and Roy Ryu Chair in International Economics and Development Executive Summary This impact evaluation reviews a United States Department of Labor-funded child labor reduction program in Panama, administrated...

  15. How Can Child Labor Lead to an Increase in Human Capital of Child Laborers and What Are Policy Implications?

    E-Print Network [OSTI]

    Luong, Quoc Viet

    2011-01-01T23:59:59.000Z

    How Can Child Labor Lead to an Increase in Human Capital ofAbstract How Can Child Labor Lead to an Increase in Humanshows that child labor leads to an increase in human

  16. Office of the Assistant General Counsel for Labor and Pension...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Labor Websites: Davis-Bacon Act Assistance Wage Determinations Service Contract Act Office of the Solicitor National Labor Relations Board: NLRB Research...

  17. POLICY GUIDANCE MEMORANDUM #08 DOE Fair Labor Standards Act ...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    8 DOE Fair Labor Standards Act (FLSA) ExemptNon-Exempt Status Determination POLICY GUIDANCE MEMORANDUM 08 DOE Fair Labor Standards Act (FLSA) ExemptNon-Exempt Status...

  18. When does labor scarcity encourage innovation?

    E-Print Network [OSTI]

    Acemoglu, Daron

    This paper studies whether labor scarcity encourages technological advances, i.e., technology adoption or innovation, for example, as claimed by Habakkuk in the context of 19th-century United States. I define technology ...

  19. Two Essay in Labor and Public Economics

    E-Print Network [OSTI]

    Huaroto, Noelia Ruth Paez

    2011-10-21T23:59:59.000Z

    studies the relationship between labor market participation and childbirth spacing. I construct a simple dynamic discrete-choice model to theoretically develop several implications. My model's key prediction is that while continuously working women would...

  20. Essays on international economics and labor markets

    E-Print Network [OSTI]

    Tessada, José

    2008-01-01T23:59:59.000Z

    This thesis consists of three separate essays related to international economics and labor markets. The first essay, with Francisco Gallego, looks at sudden stops, a main feature of developing countries in the last decades, ...

  1. Essays in Labor and Development Economics

    E-Print Network [OSTI]

    Mutsalklisana, Charles Saharuk

    2011-01-01T23:59:59.000Z

    1980s,” Journal of Labor Economics, 15, 1- 42 Blinder, Alan,Differentials,” The Review of Economics and Statistics, 70,Canadian Journal of Economics, 35, 646- 688 Lewbel, A. ,

  2. Essays in public finance and labor economics

    E-Print Network [OSTI]

    Ananat, Elizabeth Oltmans

    2006-01-01T23:59:59.000Z

    This thesis examines three questions of causality relevant to public finance and labor economics: the effect of racial segregation on city characteristics, the effect of divorce on women's economic outcomes, and the effect ...

  3. California Labor Relations: Background and Developments through Mid-2002

    E-Print Network [OSTI]

    Mitchell, Daniel J.B.

    2002-01-01T23:59:59.000Z

    power plants, disrupting ongoing labor relations at the facilities. For example, at a former Southern California

  4. Kansas Labor Unions: Past, Present and Future

    E-Print Network [OSTI]

    Shulenburger, David E.; Johnson, Nancy Brown

    1983-06-01T23:59:59.000Z

    Labor Unions: Past, Present and Future,” Kansas Business Review, with N.B. Johnson, Volume 6 (May-June, 1983), pp. 13-17. Terms of Use: http://www2.ku.edu/~scholar/docs/license.shtml and N. B. Johnson Kansas Labor Unions: Past, Present, and Future... that the strikers were " . . . sober, in­ telligent, orderly men" and encouraged the railroad to "arrange terms for an amicable settlement."6 Governor Martin's stalwart stand not to intervene with troops represented one of the earliest occasions in which a state...

  5. Child Labor in Texas Agriculture (Spanish)

    E-Print Network [OSTI]

    Smith, David

    2005-04-28T23:59:59.000Z

    menores se pueden emplear. ? Los Trabajos Agr?colas Peligrosos seg?n el Secretario del Trabajo de los EE.UU. se relacionan con las restricciones del empleo de menores de edad. ? El Cap?tulo 51 del C?digo Laboral de Texas (Texas Labor Code, Chapter 51... ? producir, cultivar, sembrar y cosechar un produc- to agr?cola u hort?cola ? criar ganado de lecher?a ? criar ganado, abejas, animales peludos o aves caseras El Departamento del Trabajo de los EE.UU. cla- sifica ciertas tareas agr?colas como peligrosas...

  6. Protective Force

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2005-08-26T23:59:59.000Z

    Establishes requirements for management and operation of the DOE Protective Force (PF), establishes requirements for firearms operations and defines the firearms courses of fire. Cancels: DOE M 473.2-1A DOE M 473.2-2

  7. Protective Force

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2006-03-07T23:59:59.000Z

    The manual establishes requirements for management and operation of the DOE Protective Force, establishes requirements for firearms operations and defines the firearms courses of fire. Chg 1 dated 3/7/06. DOE M 470.4-3A cancels DOE M 470.4-3, Chg 1, Protective Force, dated 3-7-06, Attachment 2, Contractor Requirement Document (CRD) only (except for Section C). Chg 1, dated 3-7-06, cancels DOE M 470.4-3

  8. Casimir forces

    E-Print Network [OSTI]

    S. Reynaud; A. Lambrecht

    2014-10-10T23:59:59.000Z

    The present notes are organized as the lectures given at the Les Houches Summer School "Quantum Optics and Nanophotonics" in August 2013. The first section contains an introduction and a description of the current state-of-the-art for Casimir force measurements and their comparison with theory. The second and third sections are a pedagogical presentation of the main features of the theory of Casimir forces for 1-dimensional model systems and for mirrors in 3-dimensional space.

  9. Essays on the economics of local labor markets

    E-Print Network [OSTI]

    Notowidigdo, Matt, 1981-

    2010-01-01T23:59:59.000Z

    This thesis studies the economics of local labor markets. There are three chapters in the thesis, and each chapter studies how economic outcomes are affected by local labor market conditions. The first chapter studies the ...

  10. Labor Market Frictions, Interest Rates, and Macroeconomic Policies

    E-Print Network [OSTI]

    Zhang, Ji

    a large decline of the whole economy, unconventional creditdecline, but raise unemployment and slow the recovery of the labor market. Unconventionaldecline, but raise unem- ployment and slow the recovery of the labor market. Unconventional

  11. STUDENT LABOR POSITION DESCRIPTION Forestry Department

    E-Print Network [OSTI]

    Baltisberger, Jay H.

    approved STUDENT LABOR POSITION DESCRIPTION Forestry Department Most Recently Updated 10/17/00 Position Title: Student Forestry Technician Must work 10 hrs/wk. or 15 hrs/wk (depending on grade). I. The following are the essential duties for a Forestry Technician in the Forestry Department: 1. Supervise other

  12. ARGONNE NATIONAL LABORATOR 9700 South Cass Avenue

    E-Print Network [OSTI]

    Dongarra, Jack

    . Y ARGONNE NATIONAL LABORATOR 9700 South Cass Avenue P Argonne, Illinois 60439 rospectus Street 2 New York, New York 1001 + M Jack J. Dongarra athematics and Computer Science Division A Argonne Sorensen athematics and Computer Science Division Argonne National Laboratory Argonne, Illinois 604394844

  13. Experiencing emotional labor: an analysis of the discursive construction of emotional labor

    E-Print Network [OSTI]

    Haman, Mary Kathryn

    2007-04-25T23:59:59.000Z

    This study analyzes how employees at a university recreation center discursively construct their experiences of emotional labor, how they conceptualize such behavior in terms of displaying unfelt emotions and faking in good and bad faith, and what...

  14. Labor arbitrage : impact of offshoring in the U.S. labor market

    E-Print Network [OSTI]

    Malibran, Jorge (Malibran Ángel)

    2013-01-01T23:59:59.000Z

    The rapid growth of offshoring has ignited a contentious debate over its impact on the US labor market. Between 1983 and 2002, the United States economy lost 6 million jobs in manufacturing and income inequality increased ...

  15. EMPLOYEE RIGHTSUNDER THE FAIR LABOR STANDARDS ACT THE UNITED STATES DEPARTMENT OF LABOR WAGE AND HOUR DIVISION

    E-Print Network [OSTI]

    Subramanian, Venkat

    EMPLOYEE RIGHTSUNDER THE FAIR LABOR STANDARDS ACT THE UNITED STATES DEPARTMENT OF LABOR WAGE AND HOUR DIVISION FEDERAL MINIMUM WAGE At least 1 times your regular rate of pay for all hours worked over be assessed for each child labor violation that causes the death or serious injury of any minor employee

  16. United States Trade and Foreign Labor Interests: The Effects on Foreign Labor of Linking Trade with Labor Provisions in Bilateral U.S. Free Trade Agreements

    E-Print Network [OSTI]

    Soleimani, Jonathan

    2008-01-01T23:59:59.000Z

    Daniel K. "The End of the Big Trade Deal." The International2004. Ibid. Sandra Polaski, “Trade and Labor Standards: Afor International Peace: Trade, Equity, and Development

  17. Lift Forces

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5Let us count theLienertLift Forces in Bubbly

  18. Looking for Work, Searching for Workers: U.S. Labor Markets after the Civil War

    E-Print Network [OSTI]

    Rosenbloom, Joshua L.

    1994-01-01T23:59:59.000Z

    .5 Public road construction 149 0.4 Other workers Coal mining 3,460 8.5 Copper & iron mining 848 2.1 Lumber & saw milling 835 2.0 Quarrying 631 1.5 Coking 443 1.1 Miscellaneous1 3,706 9.1 Total 40,737 100.0 Source: Sheridan 1907: 421. includes... operators faced the prob lem of assembling a workforce in relatively unpopulated areas. When mining operations were begun, operators had little choice but to bring the neces sary labor force to the location of production. As Table 1 shows, coal, copper...

  19. Labor Standards Interview Form | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking ofOil & Gas » MethaneJohnsonKristina PflanzLM NewsBlogLabor Standards

  20. Labor Standards for Construction | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking ofOil & Gas » MethaneJohnsonKristina PflanzLM NewsBlogLabor

  1. Labor and Safety: Mines and Mining Safety (Indiana)

    Broader source: Energy.gov [DOE]

    This section contains labor regulations pertaining specifically to coal mine workers. The law establishes the Indiana Mining Board. The Board's duties include: collecting and distributing...

  2. ABOUT THE JOURNAL The first journal devoted specifically to labor economics, the

    E-Print Network [OSTI]

    Mateo, Jill M.

    ABOUT THE JOURNAL The first journal devoted specifically to labor economics, the Journal of Labor journal of the Society of Labor Economists. Audience Academic, business, and government economists-advertising@press.uchicago.edu Journal of Labor Economics The first journal devoted specifically to labor economics Quarterly 216 pages

  3. INTERNSHIP AND EXTERNSHIP PROGRAMS UNDER THE FAIR LABOR STANDARDS ACT

    E-Print Network [OSTI]

    Martinez, Tony R.

    TOPIC: INTERNSHIP AND EXTERNSHIP PROGRAMS UNDER THE FAIR LABOR STANDARDS ACT INTRODUCTION: In April 2010, the Department of Labor ("DOL") published a "Fact Sheet" on "Internship Programs Under the Fair their student internship programs in response to this publication [2], the DOL Fact Sheet does not change

  4. Experimenting with 'Lad Culture': A Simulation Based on Willis' "Learning to Labor"

    E-Print Network [OSTI]

    Downey, Sean S.

    2005-01-01T23:59:59.000Z

    CULTURE”: A SIMULATION BASED ON WILLIS’ LEARNING TO LABOR SCULTURE”: A SIMULATION BASED ON WILLIS’ LEARNING TO LABOR SLearning to Labor” and also how ethnographic research might benefit by incorporating simulation

  5. Background on Zambia's Labor Market with Cross-National Comparisons

    E-Print Network [OSTI]

    Chester, Alex; Dang, Thao; Edgell, Amanda; Harber, Matthew; Mahaney, Dace; Messer, Matthew; Ramos, Luis

    2011-01-01T23:59:59.000Z

    Although Zambia has enjoyed decent economic growth, its employment growth and labor productivity have continued to stagnate. What factors explain the stagnation? This Capstone project aims to answer this question through empirical analysis...

  6. Electric Demand Cost Versus Labor Cost: A Case Study

    E-Print Network [OSTI]

    Agrawal, S.; Jensen, R.

    Electric Utility companies charge industrial clients for two things: demand and usage. Depending on type of business and hours operation, demand cost could be very high. Most of the operations scheduling in a plant is achieved considering labor cost...

  7. 14.662 Labor Economics II, Spring 2005

    E-Print Network [OSTI]

    Autor, David H.

    The development and evolution of labor market structures and institutions. Particular focus on competing explanations of recent developments in the distribution of wage and salary income and in key institutions and ...

  8. Electric Demand Cost Versus Labor Cost: A Case Study 

    E-Print Network [OSTI]

    Agrawal, S.; Jensen, R.

    1998-01-01T23:59:59.000Z

    ELEcrRIC DEMAND COST Versus LABOR COST: A CASE STUDY Sanjay Agrawal Richard Jensen Assistant Director Director Industrial Assessment Center Department of Engineering Hofstra University, Hempstead, NY 11549 ABSTRAcr Electric Utility companies...

  9. Essays on the youth and low-skilled labor market

    E-Print Network [OSTI]

    Smith, Christopher Lane

    2008-01-01T23:59:59.000Z

    This dissertation consists of three chapters on the youth and low-skilled labor markets. In Chapter 1, I show that teen employment is significantly more responsive than adult employment to immigration, and that growth in ...

  10. Question/comment: An estimate of the direct productive labor...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    support personnel by labor category is provided in Section J.9, Attachment D of the RFP in the table titled Position Qualifications. Each Offeror is expected to propose the...

  11. approved korea labor: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    148 Office of Workforce Policy and Labor Relations Engineering Websites Summary: .254-7232 f. 607.255.0298 e. equalopportunity@cornell.edu www.ohr.cornell.edu Cornell University...

  12. active labor market: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    230 Office of Workforce Policy and Labor Relations Engineering Websites Summary: .254-7232 f. 607.255.0298 e. equalopportunity@cornell.edu www.ohr.cornell.edu Cornell University...

  13. al riesgo laboral: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    60 Office of Workforce Policy and Labor Relations Engineering Websites Summary: .254-7232 f. 607.255.0298 e. equalopportunity@cornell.edu www.ohr.cornell.edu Cornell University...

  14. accidente laboral acsom: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    74 Office of Workforce Policy and Labor Relations Engineering Websites Summary: .254-7232 f. 607.255.0298 e. equalopportunity@cornell.edu www.ohr.cornell.edu Cornell University...

  15. actividad laboral sobre: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    74 Office of Workforce Policy and Labor Relations Engineering Websites Summary: .254-7232 f. 607.255.0298 e. equalopportunity@cornell.edu www.ohr.cornell.edu Cornell University...

  16. al mercado laboral: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    70 Office of Workforce Policy and Labor Relations Engineering Websites Summary: .254-7232 f. 607.255.0298 e. equalopportunity@cornell.edu www.ohr.cornell.edu Cornell University...

  17. al mundo laboral: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    64 Office of Workforce Policy and Labor Relations Engineering Websites Summary: .254-7232 f. 607.255.0298 e. equalopportunity@cornell.edu www.ohr.cornell.edu Cornell University...

  18. al turno laboral: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    56 Office of Workforce Policy and Labor Relations Engineering Websites Summary: .254-7232 f. 607.255.0298 e. equalopportunity@cornell.edu www.ohr.cornell.edu Cornell University...

  19. al retiro laboral: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    54 Office of Workforce Policy and Labor Relations Engineering Websites Summary: .254-7232 f. 607.255.0298 e. equalopportunity@cornell.edu www.ohr.cornell.edu Cornell University...

  20. Labor and energy impacts of energy-conservation measures

    SciTech Connect (OSTI)

    Not Available

    1980-01-01T23:59:59.000Z

    Three papers are presented discussing the labor and energy impacts of energy-conservation measures, namely: Generation of the Industry/Occupation Wage Matrix and Related Matters, by Carole Green; Job Shifts from Energy Conservation (Salary Distribution Effects), by Robert A. Herendeen; and Energy and Labor Implication of Improving Thermal Integrity of New Houses, by John Joseph Nangle. A separate abstract was prepared for each paper.

  1. Restructuring, Ownership and Efficiency: The Case of Labor in Electricity Generation

    E-Print Network [OSTI]

    Shanefelter, Jennifer Kaiser

    2007-01-01T23:59:59.000Z

    inputs to electricity generation: fuel, capital, materialsand labor. Electricity generation is a fuel-intensive

  2. Analyzing the Extent and Influence of Occupational Licensing on the Labor Market*

    E-Print Network [OSTI]

    Levinson, David M.

    Friedman and Kuznets's (1945) classic work, there has been little analysis of the labor market influence

  3. ABOUT THE JOURNAL The first journal devoted specifically to labor economics, the

    E-Print Network [OSTI]

    Mateo, Jill M.

    ABOUT THE JOURNAL The first journal devoted specifically to labor economics, the Journal of Labor journal of the Society of Labor Economists. Audience Academic, business, and government economists contact: j-advertising@press.uchicago.edu Journal of Labor Economics The first journal devoted

  4. WORKING PAPER N 2008 -57 Labor force participation by the elderly

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Abstract: One of the justifications provided for early retirement policies in developed countries that are or have been provided for early retirement policies in developed countries is the idea that such policies. Such a belief has undoubtedly played a role in France, where early retirement policies started to expand, during

  5. The relationship between parental labor force participation and adolescents' dietary intake and risks to cardiovascular health 

    E-Print Network [OSTI]

    Godwin, Anne Louise

    1997-01-01T23:59:59.000Z

    history. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 60 Regression coefficients, standard error, p-values, and adjusted R' of sons' caloric intake regressed on mothers' weekly work schedule irregularity, and mothers' absence of work... of caloric intake from monounsaturated fat regressed on fathers' work autonomy and fathers' work history. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 65 Regression coefficients, standard error, p-values, and adjusted R' of daughters...

  6. Three essays in labor and health economics: individual decisions on occupation, labor supply, and demand for heatlh 

    E-Print Network [OSTI]

    Shin, Ja Eun

    2005-08-29T23:59:59.000Z

    In this dissertation, I examine individual decisions in occupational choice, labor supply, and health care utilization. Occupational choice decisions of female college graduates on whether to teach or not are analyzed to ...

  7. Three essays in labor and health economics: individual decisions on occupation, labor supply, and demand for heatlh

    E-Print Network [OSTI]

    Shin, Ja Eun

    2005-08-29T23:59:59.000Z

    In this dissertation, I examine individual decisions in occupational choice, labor supply, and health care utilization. Occupational choice decisions of female college graduates on whether to teach or not are analyzed to understand the role...

  8. Three-Nucleon Forces

    E-Print Network [OSTI]

    Peter U. Sauer

    2014-07-25T23:59:59.000Z

    The role of three-nucleon forces in ab initio calculations of nuclear systems is investigated. The difference between genuine and induced many-nucleon forces is emphasized. Induced forces arise in the process of solving the nuclear many-body problem as technical intermediaries towards calculationally converged results. Genuine forces make up the Hamiltonian; they represent the chosen underlying dynamics. The hierarchy of contributions arising from two-, three- and many-nucleon forces is discussed. Signals for the need of the inclusion of genuine three-nucleon forces are studied in nuclear systems, technically best under control, especially in three-nucleon and four-nucleon systems. Genuine three-nucleon forces are important for details in the decription of some observables. Their contributions to observables are small on the scale set by two-nucleon forces.

  9. Protective Force Program Manual

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2000-06-30T23:59:59.000Z

    Provides detailed requirements to supplement DOE O 473.2, Protective Force Program, which establishes the requirements and responsibilities for management and operation of the Department of Energy (DOE) Protective Force (PF) Program. Does not cancel other directives.

  10. Management and Labor Relations Techniques of Japanese-Owned Automotive Assembly Plants in the United States

    E-Print Network [OSTI]

    Pitney, Paul

    2005-12-16T23:59:59.000Z

    This field project involves a study of the Japanese-owned automotive assembly plants, or “transplants,” in the United States and the management and labor-relations techniques that have made them successful. The management and labor...

  11. Facing Racism at 30,000 Feet: African American Pilots, Flight Attendants, and Emotional Labor

    E-Print Network [OSTI]

    Evans, Louwanda

    2012-07-16T23:59:59.000Z

    In this qualitative study, I examine the experiences of African American pilots and flight attendants with emotional labor. Integral to existing theories of emotional labor is the incorporation of voices of color and their contemporary movement...

  12. UNIVERSITY OF NEW MEXICO LABOR MANAGEMENT RELATIONS RESOLUTION

    E-Print Network [OSTI]

    New Mexico, University of

    UNIVERSITY OF NEW MEXICO LABOR MANAGEMENT RELATIONS RESOLUTION RELATING TO COLLECTIVE BARGAINING FOR THE UNIVERSITY OF NEW MEXICO; PROVIDING RIGHTS, RESPONSIBILITIES, AND PROCEDURES IN THE EMPLOYMENT RELATIONSHIP BETWEEN EMPLOYEES AND THE EMPLOYER. BE IT ENACTED BY THE BOARD OF REGENTS OF THE UNIVERSITY OF NEW MEXICO

  13. THE EGYPT LABOR MARKET PANEL SURVEY: INTRODUCING THE 2012 ROUND

    E-Print Network [OSTI]

    Levinson, David M.

    #12;THE EGYPT LABOR MARKET PANEL SURVEY: INTRODUCING THE 2012 ROUND Ragui Assaad and Caroline Egypt www.erf.org.eg Copyright © The Economic Research Forum, 2013 All rights reserved. No part our data to other statistical sources for Egypt to evaluate the representativeness of the sample

  14. Union-Party Links and the Reconfiguration of the Labor Movement: Brazil and Mexico 1990-2007

    E-Print Network [OSTI]

    Miljanic, Andra Olivia

    2010-01-01T23:59:59.000Z

    trabajo, y capital en México [ The structure of the LaborCongress: State, labor, and capital in Mexico].México, D.F. , Mexico: Fondo de Cultural Económica.

  15. j:rmstern/manuscripts/laborstds fall99.doc LABOR STANDARDS AND TRADE

    E-Print Network [OSTI]

    Shyy, Wei

    and empirical grounds to support the international enforcement and harmonization of labor standards. On a global level, the International Labor Organization (ILO) is best suited to provide a multilateral forum that would serve to strengthen its role and authority in pursuing improved labor standards internationally

  16. Ctedra de Salud Laboral La Ctedra de Salud Laboral para la prevencin de riesgos derivados del trabajo se cre

    E-Print Network [OSTI]

    Oro, Daniel

    trabajo se creó en 2009 para continuar las actividades de la Cátedra Fundación MAPFRE en relación con la salud laboral (seguridad en el trabajo, higiene industrial, ergonomía y psicosociología aplicada) en los modalidades de enseñanza: semipresencial en el campus de la UIB y a distancia, sobre la plataforma telemática

  17. Abstract--Automation has long been recognized as an im-portant goal in AFM (Atomic Force Microscope) nanomanipu-

    E-Print Network [OSTI]

    Southern California, University of

    Abstract--Automation has long been recognized as an im- portant goal in AFM (Atomic Force on the order of 10 nm, however, automation has re- mained an elusive goal, primarily because of the spatial multi-tip arrays) or by automating the manipulation process, thus bypassing the time-consuming and labor

  18. NUCLEAR PROXIMITY FORCES

    E-Print Network [OSTI]

    Randrup, J.

    2011-01-01T23:59:59.000Z

    One might summarize of nuclear potential energy has beendegree of freedom) for the nuclear interaction between anyUniversity of California. Nuclear Proximity Forces 'I< at

  19. Forces from Connes' geometry

    E-Print Network [OSTI]

    Thomas Schucker

    2007-03-26T23:59:59.000Z

    We try to give a pedagogical introduction to Connes' derivation of the standard model of electro-magnetic, weak and strong forces from gravity.

  20. Protective Force Program Manual

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2001-12-20T23:59:59.000Z

    Provides detailed requirements to supplement DOE O 473.2, PROTECTIVE FORCE PROGRAM, which establishes the requirements and responsibilities for management and operation of the Department of Energy (DOE) Protective Force (PF) Program. Change 1 revised pages in Chapters IV and VI on 12/20/2001.

  1. NEW - DOE O 350.3, Labor Standards Compliance, Contractor Labor Relations, and Contractor Workforce Restructuring Programs

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    To ensure that contractors pursue collective bargaining practices that promote efficiency and economy in contract operations, judicious expenditure of public funds, equitable resolution of disputes, and effective collective bargaining relationships; that contractor relations/human resources specialists achieve consultations with management and operating contractors; and that appropriate labor standards are included in DOE/NNSA contracts and subcontracts. Cancels Chapters I-III of DOE O 350.1 Chg 4. Does not cancel other directives.

  2. OOTW Force Design Tools

    SciTech Connect (OSTI)

    Bell, R.E.; Hartley, D.S.III; Packard, S.L.

    1999-05-01T23:59:59.000Z

    This report documents refined requirements for tools to aid the process of force design in Operations Other Than War (OOTWs). It recommends actions for the creation of one tool and work on other tools relating to mission planning. It also identifies the governmental agencies and commands with interests in each tool, from whom should come the user advisory groups overseeing the respective tool development activities. The understanding of OOTWs and their analytical support requirements has matured to the point where action can be taken in three areas: force design, collaborative analysis, and impact analysis. While the nature of the action and the length of time before complete results can be expected depends on the area, in each case the action should begin immediately. Force design for OOTWs is not a technically difficult process. Like force design for combat operations, it is a process of matching the capabilities of forces against the specified and implied tasks of the operation, considering the constraints of logistics, transport and force availabilities. However, there is a critical difference that restricts the usefulness of combat force design tools for OOTWs: the combat tools are built to infer non-combat capability requirements from combat capability requirements and cannot reverse the direction of the inference, as is required for OOTWs. Recently, OOTWs have played a larger role in force assessment, system effectiveness and tradeoff analysis, and concept and doctrine development and analysis. In the first Quadrennial Defense Review (QDR), each of the Services created its own OOTW force design tool. Unfortunately, the tools address different parts of the problem and do not coordinate the use of competing capabilities. These tools satisfied the immediate requirements of the QDR, but do not provide a long-term cost-effective solution.

  3. Weak nuclear forces cause the strong nuclear force

    E-Print Network [OSTI]

    E. L. Koschmieder

    2007-12-11T23:59:59.000Z

    We determine the strength of the weak nuclear force which holds the lattices of the elementary particles together. We also determine the strength of the strong nuclear force which emanates from the sides of the nuclear lattices. The strong force is the sum of the unsaturated weak forces at the surface of the nuclear lattices. The strong force is then about ten to the power of 6 times stronger than the weak force between two lattice points.

  4. Federal Protective Force

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2009-07-15T23:59:59.000Z

    This Manual establishes requirements for the management and operation of the Department of Energy (DOE) Federal protective forces (FPFs). Cancels DOE M 470.4-3, Chg 1. Canceled by DOE O 473.3.

  5. Protective Force Program

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1995-02-13T23:59:59.000Z

    To prescribe Department of Energy policy, responsibilities, and requirements for the management and operation of the Protective Force Program. Chg 1 dated 2-13-95. Cancels DOE O 5632.7 and DOE O 5632.8.

  6. Strategic forces briefing

    SciTech Connect (OSTI)

    Bing, G.; Chrzanowski, P.; May, M.; Nordyke, M.

    1989-04-06T23:59:59.000Z

    The Strategic Forces Briefing'' is our attempt, accomplished over the past several months, to outline and highlight the more significant strategic force issues that must be addressed in the near future. Some issues are recurrent: the need for an effective modernized Triad and a constant concern for force survivability. Some issues derive from arms control: the Strategic Arms Reduction Talks (SALT) are sufficiently advanced to set broad numerical limits on forces, but not so constraining as to preclude choices among weapon systems and deployment modes. Finally, a new administration faced with serious budgetary problems must strive for the most effective strategic forces limited dollars can buy and support. A review of strategic forces logically begins with consideration of the missions the forces are charged with. We begin the briefing with a short review of targeting policy and implementation within the constraints of available unclassified information. We then review each element of the Triad with sections on SLBMs, ICBMs, and Air-Breathing (bomber and cruise missile) systems. A short section at the end deals with the potential impact of strategic defense on offensive force planning. We consider ABM, ASAT, and air defense; but we do not attempt to address the technical issues of strategic defense per se. The final section gives a brief overview of the tritium supply problem. We conclude with a summary of recommendations that emerge from our review. The results of calculation on the effectiveness of various weapon systems as a function of cost that are presented in the briefing are by Paul Chrzanowski.

  7. Chapter 22 - Labor Standards for Construction | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube platformBuilding RemovalCSSDepartment of Energy5-4-2012 9-13 -182 - Labor

  8. DOE/Labor Leadership Roundtable Meetings | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you0and Transparency,8-9612-985-2007Supplemental Environmental67 U.S.DOE/Labor

  9. Colorado Department of Labor and Employment | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia:PowerCER.png El CERCollier Technologies IncCity,Published ColoradoLabor

  10. An analysis of gin labor costs in the state of Texas

    E-Print Network [OSTI]

    Danforth, Joe Jeff

    1940-01-01T23:59:59.000Z

    '7 Oianing Seasons ~ \\ ~ ~ ~ i ~ ~ ~ ~ ~ ~ ~ ' ~ ~ i ~ ~ ~ IXIi Volaao at Oinaiag ?s Related to Hour aad Dollar Cost of Labor for a Oin ia South Texas from lORS to the 1957 01nning Seasons ) Inol us 1re ~ ~ ~ i ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 11 XVh. Volume... VXII. The Iadox at Texas Oin Labor oad tho Dadox of Haurly Rarnings ei' wage worhors tron 1980 to 1957, Inclusive. . So Rstimaiod Hour Cost ot Labor tor Stcam Cine 1n Bast Texas& 1989 1957 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 48 X Rtfeots ef Volmse...

  11. University of Michigan Institute for Research on Labor, Employment and the Economy

    E-Print Network [OSTI]

    Shyy, Wei

    University of Michigan Institute for Research on Labor, Employment and the Economy (IRLEE) Mission innovation, increasing entrepreneurship, and improving the economy; (5) Foster a core of interdisciplinary

  12. Compliance and competitiveness : how prosecutors enforce labor and environmental laws and promote economic development in Brazil

    E-Print Network [OSTI]

    Coslovsky, Salo Vinocur

    2009-01-01T23:59:59.000Z

    This dissertation bridges the fields of international development, legal sociology, and organizational behavior to examine how Brazilian prosecutors enforce labor and environmental laws. Typically, the enforcement of ...

  13. Tackling Global Inequality in Labor Migration: Diaspora Mechanism and Migration Development Bank

    E-Print Network [OSTI]

    Gevorkyan, Aleksandr V.; Gevorkyan, Arkady V.

    2007-01-01T23:59:59.000Z

    Tackling Global Inequality in Labor Migration: DiasporaCruz Conference on “Mapping Global Inequalities - BeyondIncome Inequality” * November 17, 2007 New York, NY

  14. From Self-Help to Public Labor Camps: Exploring Ways to House California's Agricultural Workers

    E-Print Network [OSTI]

    Ruiz, Enedina

    2012-01-01T23:59:59.000Z

    the Bracero Labor Camps in Ventura County. Thesis 2009 (20061, 1995. Alvarez, Fred. “Ventura County Focuses on HousingFarmworker units ease crowding” Ventura County. November 15,

  15. Down But Not Out: The Recovery of a Downsized Labor Movement in Argentina (2002-2006)

    E-Print Network [OSTI]

    Etchemendy, Sebastian; Collier, Ruth Berins

    2007-01-01T23:59:59.000Z

    Policy and Collective Action: Unemployed Workers, Community Associations and Protest in Argentina”policy had broader ramifications that stimulated business-labor bargaining. In Argentina,

  16. Unbalanced electromagnetic forces

    E-Print Network [OSTI]

    Hansen, Craig Martin

    1974-01-01T23:59:59.000Z

    coils V ? 4 Vertical spring suspension experiment V ? 5 Horizontal suspension experiment 74 V ? 6 Linear plot of data for egg-shaped coil; horizontal suspension experiment V ? 7 Log-log plot of data for egg-shaped coil; horizontal suspension... segment L on straight line current segment L 53 V-1 Geometrical configuration of experimental coils. . . 62 V ? 2 Retational system for measuring force in various size points 65 xi ~Fi ure V ? 3 Rotational system for measuring force in egg-shaped...

  17. Direct Aerosol Forcing Uncertainty

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Mccomiskey, Allison

    Understanding sources of uncertainty in aerosol direct radiative forcing (DRF), the difference in a given radiative flux component with and without aerosol, is essential to quantifying changes in Earth's radiation budget. We examine the uncertainty in DRF due to measurement uncertainty in the quantities on which it depends: aerosol optical depth, single scattering albedo, asymmetry parameter, solar geometry, and surface albedo. Direct radiative forcing at the top of the atmosphere and at the surface as well as sensitivities, the changes in DRF in response to unit changes in individual aerosol or surface properties, are calculated at three locations representing distinct aerosol types and radiative environments. The uncertainty in DRF associated with a given property is computed as the product of the sensitivity and typical measurement uncertainty in the respective aerosol or surface property. Sensitivity and uncertainty values permit estimation of total uncertainty in calculated DRF and identification of properties that most limit accuracy in estimating forcing. Total uncertainties in modeled local diurnally averaged forcing range from 0.2 to 1.3 W m-2 (42 to 20%) depending on location (from tropical to polar sites), solar zenith angle, surface reflectance, aerosol type, and aerosol optical depth. The largest contributor to total uncertainty in DRF is usually single scattering albedo; however decreasing measurement uncertainties for any property would increase accuracy in DRF. Comparison of two radiative transfer models suggests the contribution of modeling error is small compared to the total uncertainty although comparable to uncertainty arising from some individual properties.

  18. Protective Force Program

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2000-06-30T23:59:59.000Z

    Establishes policy, requirements, responsibilities, and authorities, for the management and operation of the Department of Energy (DOE) Protective Force (PF) Program. Extended until 7-7-06 by DOE N 251.64, dated 7-7-05 Cancels: DOE 5632.7A

  19. Contractor Protective Force

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2008-11-05T23:59:59.000Z

    This Manual establishes requirements for the management and operation of the U.S. Department of Energy contractor protective forces. Cancels: DOE M 470.4-3 Chg 1, CRD (Attachment 2) only, except for Section C. Canceled by DOE O 473.3.

  20. Work Force Discipline

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1983-03-23T23:59:59.000Z

    The order provides guidance and procedures and states responsibilities for maintaining work force discipline in DOE. Chg 1, dated 3-11-85; Chg 2, dated 1-6-86; Chg 3, dated 3-21-89; Chg 4, dated 8-2-90; Chg 5, dated 3-9-92; Chg 6, dated 8-21-92, cancels Chg 5.

  1. Marriage, fertility, and labor market prospects in the United States, 1960-2000

    E-Print Network [OSTI]

    Kuo, Yu-Chen

    2005-11-01T23:59:59.000Z

    Over the past forty years a tremendous number of women have entered the labor market, removing stay-home motherhood as the most dominant female occupation. The linkage between the change in the labor market and change in family structure has drawn a...

  2. www.cambridge.org/us/american-history American Labor and Economic

    E-Print Network [OSTI]

    Tsien, Roger Y.

    www.cambridge.org/us/american-history American Labor and Economic Citizenship New Capitalism from as a time when Herbert Hoover and his allies worked to significantly reform economic policy. In Ameri- can Labor and Economic Citizenship, Mark Hendrickson both augments and amends this view by studying

  3. Public Employment and Labor Market Performances Yann Algany, Pierre Cahucz and Andr Zylberbergx

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Public Employment and Labor Market Performances¤ Yann Algany, Pierre Cahucz and André Zylberbergx deals with the consequence of public employment on labor market perfor- mances in 17 OECD countries over, public employment represents an important share of total employ- ment. Table 1 shows that the average

  4. Fair Labor Standard Act and Service Contract Act Price Adjustment UT-B Contracts Div Page 1 of 1

    E-Print Network [OSTI]

    Pennycook, Steve

    Fair Labor Standard Act and Service Contract Act ­ Price Adjustment UT-B Contracts Div Sept 2009 Page 1 of 1 flsa-price-adj-ext-sept09.doc FAIR LABOR STANDARDS ACT AND SERVICE CONTRACT ACT - PRICE

  5. Force Modulator System

    SciTech Connect (OSTI)

    Redmond Clark

    2009-04-30T23:59:59.000Z

    Many metal parts manufacturers use large metal presses to shape sheet metal into finished products like car body parts, jet wing and fuselage surfaces, etc. These metal presses take sheet metal and - with enormous force - reshape the metal into a fully formed part in a manner of seconds. Although highly efficient, the forces involved in forming metal parts also damage the press itself, limit the metals used in part production, slow press operations and, when not properly controlled, cause the manufacture of large volumes of defective metal parts. To date, the metal-forming industry has not been able to develop a metal-holding technology that allows full control of press forces during the part forming process. This is of particular importance in the automotive lightweighting efforts under way in the US automotive manufacturing marketplace. Metalforming Controls Technology Inc. (MC2) has developed a patented press control system called the Force Modulator that has the ability to control these press forces, allowing a breakthrough in stamping process control. The technology includes a series of hydraulic cylinders that provide controlled tonnage at all points in the forming process. At the same time, the unique cylinder design allows for the generation of very high levels of clamping forces (very high tonnages) in very small spaces; a requirement for forming medium and large panels out of HSS and AHSS. Successful production application of these systems testing at multiple stamping operations - including Ford and Chrysler - has validated the capabilities and economic benefits of the system. Although this technology has been adopted in a number of stamping operations, one of the primary barriers to faster adoption and application of this technology in HSS projects is system cost. The cost issue has surfaced because the systems currently in use are built for each individual die as a custom application, thus driving higher tooling costs. This project proposed to better marry the die-specific Force Modulator technology with stamping presses in the form of a press cushion. This system would be designed to operate the binder ring for multiple parts, thus cutting the per-die cost of the technology. This study reports the results of technology field application. This project produced the following conclusions: (1) The Force Modulator system is capable of operating at very high tempos in the stamping environment; (2) The company can generate substantial, controlled holding tonnage (binder ring pressure) necessary to hold high strength steel parts for proper formation during draw operations; (3) A single system can be designed to operate with a family of parts, thus significantly reducing the per-die cost of a FM system; (4) High strength steel parts made with these systems appear to show significant quality improvements; (5) The amounts of steel required to make these parts is typically less than the amounts required with traditional blank-holding technologies; and (6) This technology will aid in the use of higher strength steels in auto and truck production, thus reducing weight and improving fuel efficiency.

  6. Economic Ideas and the Labor Market: Origins of the Anglo-American Model and Prospects for Global Diffusion

    E-Print Network [OSTI]

    Jacoby, Sanford

    2004-01-01T23:59:59.000Z

    Karen Orren, Belated Feudalism: Labor, the Law, and Liberaldarkly “a new industrial feudalism. ” 6 Writing at the same

  7. Relativistic forces in Lagangian mechanics

    E-Print Network [OSTI]

    J. Muñoz Díaz

    2012-06-07T23:59:59.000Z

    We give a general definition of \\emph{relativistic force} in the context of Lagrangian mechanics. Once this is done we prove that the only relativistic forces which are linear on the velocities are those coming from differential 2-forms defined on the configuration space. In this sense, electromagnetic fields provide a mechanical system with the simplest type of relativistic forces.

  8. Atomic Force Microscope

    SciTech Connect (OSTI)

    Day, R.D.; Russell, P.E.

    1988-12-01T23:59:59.000Z

    The Atomic Force Microscope (AFM) is a recently developed instrument that has achieved atomic resolution imaging of both conducting and non- conducting surfaces. Because the AFM is in the early stages of development, and because of the difficulty of building the instrument, it is currently in use in fewer than ten laboratories worldwide. It promises to be a valuable tool for obtaining information about engineering surfaces and aiding the .study of precision fabrication processes. This paper gives an overview of AFM technology and presents plans to build an instrument designed to look at engineering surfaces.

  9. Casimir force driven ratchets

    E-Print Network [OSTI]

    Thorsten Emig

    2007-01-26T23:59:59.000Z

    We explore the non-linear dynamics of two parallel periodically patterned metal surfaces that are coupled by the zero-point fluctuations of the electromagnetic field between them. The resulting Casimir force generates for asymmetric patterns with a time-periodically driven surface-to-surface distance a ratchet effect, allowing for directed lateral motion of the surfaces in sizeable parameter ranges. It is crucial to take into account inertia effects and hence chaotic dynamics which are described by Langevin dynamics. Multiple velocity reversals occur as a function of driving, mean surface distance, and effective damping. These transport properties are shown to be stable against weak ambient noise.

  10. Work Force Restructuring Activities

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015ofDepartment of EnergyThePatricia Hoffman is theDr.Ulrike1, 2014Force

  11. Pairing forces in nuclei

    SciTech Connect (OSTI)

    Chasman, R.R. [Argonne National Lab., IL (United States). Physics Div.

    1996-12-31T23:59:59.000Z

    In this contribution, the author mentions some features of pairing forces that are unique to nuclei and cover some areas of major interest in nuclear structure research, that involve pairing. At the level of most nuclear structure studies, nuclei are treated as consisting of two kinds of fermions (protons and neutrons) in a valence space with rather few levels. These features give rise to unique aspects of pairing forces in nuclei: (1) n-p pairing in T = 0 as well as the usual T = 1 pairing that is characteristic of like fermions; (2) a need to correct pairing calculations for the (1/N) effects that can typically be neglected in superconducting solids. An issue of current concern is the nature of the pairing interaction: several recent studies suggest a need for a density dependent form of the pairing interaction. There is a good deal of feedback between the questions of accurate calculations of pairing interactions and the form and magnitude of the pairing interaction. Finally, the authors discuss some many-body wave functions that are a generalization of the BCS wave function form, and apply them to a calculation of energy level spacings in superdeformed rotational bands.

  12. Enforcement without autonomy : the politics of labor and environmental regulation in Argentina

    E-Print Network [OSTI]

    Amengual, Matthew

    2011-01-01T23:59:59.000Z

    How can states with weak and politicized bureaucracies enforce labor and environmental regulations? Through a study of subnational variation in Argentina, this dissertation develops a framework to explain why bureaucrats ...

  13. How low-skilled immigration is changing US prices and labor markets : three essays

    E-Print Network [OSTI]

    Cortes, Patricia, Ph. D. Massachusetts Institute of Technology

    2006-01-01T23:59:59.000Z

    This dissertation consists of three essays on the effects of low-skilled immigration on US prices and labor markets. The first essay uses confidential data from the Consumer Price Index to estimate the causal effect of ...

  14. Networks and Access in Labor Markets for Youth: Minorities and Women

    E-Print Network [OSTI]

    O'Regan, Katherine M.; Quigley, John M.

    1992-01-01T23:59:59.000Z

    Regan, Katherine M. and John M. Quigley (1991) "LaborYale University and John M. Quigley University of CaliforniaYale University and John M. Quigley University of California

  15. Contest, social valuation and change in American labor-union organizing, 1961-2004

    E-Print Network [OSTI]

    Ferguson, John-Paul

    2009-01-01T23:59:59.000Z

    In this thesis I explore the connections between changes to the formal procedures by which American labor unions enroll new members and the subsequent meanings and purposes that potential members and third parties attribute ...

  16. The impact of minimum age of employment regulation on child labor and schooling

    E-Print Network [OSTI]

    Edmonds, Eric V

    Promoting minimum age of employment regulation has been a centerpiece in child labor policy for the last 15 years. If enforced, minimum age regulation would change the age profile of paid child employment. Using micro-data ...

  17. Pathways to Enforcement: Labor Inspectors Leveraging Linkages with Society in Argentina

    E-Print Network [OSTI]

    Amengual, Matthew

    Regulations essential for improving labor standards are often ignored to the detriment of workers. In many countries, the agencies charged with enforcement lack resources and are subject to political interference. How can ...

  18. Beyond the letter of the law : transforming labor institutions and regulations in Argentina

    E-Print Network [OSTI]

    Natalicchio, Marcela

    2006-01-01T23:59:59.000Z

    This dissertation analyzes the factors that lead to the transformation of labor regulations and institutions after the opening of previously closed economies, using the case of Argentina as a "crucial case". In the 1990s, ...

  19. Sustained rents in imperfect labor markets : essays on recruitment, training, and incentives

    E-Print Network [OSTI]

    Benson, Alan (Alan M.)

    2013-01-01T23:59:59.000Z

    This thesis is composed of three papers, each relating to labor market imperfections and their implications for firms' staffing practices. In the first paper, I examine why hospitals provide direct financial support to ...

  20. Manpower planning and cycle-time reduction of a labor-intensive assembly line

    E-Print Network [OSTI]

    Oh, Shao Chong

    2010-01-01T23:59:59.000Z

    The demand for Gas Lift Mandrels(GLM) in the oil and gas industry is expected to increase over the next few years, requiring Schlumberger's GLM assembly line to increase their manufacturing capacity. Given the labor-intensive ...

  1. Essays using military-induced variation to study social interactions, human capital development, and labor markets

    E-Print Network [OSTI]

    Lyle, David S. (David Stephen), 1971-

    2003-01-01T23:59:59.000Z

    This dissertation consists of four empirical studies, each using military-induced variation to examine various aspects of human capital production and the U.S. labor market. The first two chapters study the effects of ...

  2. The Guy at the Controls: Labor Quality and Power Plant Efficiency

    E-Print Network [OSTI]

    Bushnell, Jim B; Wolfram, Catherine D

    2007-01-01T23:59:59.000Z

    of power plants. Although electricity generation is a fuelplant managers both suggest that labor poli- cies in electricity generationplant that had been built by the government-owned Central Electricity Generation

  3. The China Syndrome: Local Labor Market Effects of Import Competition in the United States

    E-Print Network [OSTI]

    Autor, David

    2012-05-02T23:59:59.000Z

    We analyze the effect of rising Chinese import competition between 1990 and 2007 on local U.S. labor markets, exploiting cross-market variation in import exposure stemming from initial differences in industry specialization ...

  4. The China Syndrome: Local Labor Market Effects of Import Competition in the United States

    E-Print Network [OSTI]

    Dorn, David

    We analyze the effect of rising Chinese import competition between 1990 and 2007 on US local labor markets, exploiting cross- market variation in import exposure stemming from initial differences in industry specialization ...

  5. Social Networks and Labor Market Entry Barriers: Understanding Inter-industrial Wage Differentials in Urban China

    E-Print Network [OSTI]

    Chen, Zhao; Lu, Ming; Sato, Hiroshi

    2010-01-01T23:59:59.000Z

    Social networks Uses social networks during job hunting2: Group Comparison of Social Networks and Father-in-Law’sPAPERS WP 2010-09 Social Networks and Labor Market Entry

  6. A review of "Laboring Women: Reproduction and Gender in New World Slavery" by Jennifer L. Morgan.

    E-Print Network [OSTI]

    Elisa Oh

    2004-01-01T23:59:59.000Z

    wives and mothers, should be educated for the sake of society. All in all, Women Philosophers of the Seventeenth Century is pleas- ant to read, because it is lucidly written, and highly informative. Jennifer L. Morgan. Laboring Women: Reproduction... and Gender in New World Slavery. Philadelphia: University of Pennsylvania Press, 2004. xi + 279 pp. + 16 illus. $55.00. Review by ELISA OH, BOSTON UNIVERSITY. In Laboring Women: Reproduction and Gender in New World Sla- very, Jennifer L. Morgan explores...

  7. Capital, labor, and energy cost prediction in timber harvesting: a microcomputer solution

    E-Print Network [OSTI]

    Kusmertz, Timothy Jon

    1983-01-01T23:59:59.000Z

    Organization Capital. 17 17 Labor 22 Energy. III. CAPITAL COST CALCULATION. 22 25 Depreciation. Taxes, Insurance, and Interest. 25 30 IV. LABOR COST CALCULATION. 36 Nages and Salaries. Fringe Benefits. 36 38 Chapter Page V. ENERGY COST... Summary for Champion International Corporation's Harvesting Unit g2 60 15 List of Equipment in Champion's Harvesting Unit N2 61 Table page 16 Breakdown of Workers in Champion's Harvesting Unit 42 and Their Respective Salary or Wage. . 62 17 Monthly...

  8. Ethnic niches, pathway to economic incorporation or exploitation? Labor market experiences of Latina/os 

    E-Print Network [OSTI]

    Morales, Maria Cristina

    2006-04-12T23:59:59.000Z

    ETHNIC NICHES, PATHWAY TO ECONOMIC INCORPORATION OR EXPLOITATION? LABOR MARKET EXPERIENCES OF LATINA/OS A Dissertation by MARIA CRISTINA MORALES Submitted to the Office of Graduate Studies of Texas A&M University... ETHNIC NICHES, PATHWAY TO ECONOMIC INCORPORATION OR EXPLOITATION? LABOR MARKET EXPERIENCES OF LATINA/OS A Dissertation by MARIA CRISTINA MORALES Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...

  9. Ethnic niches, pathway to economic incorporation or exploitation? Labor market experiences of Latina/os

    E-Print Network [OSTI]

    Morales, Maria Cristina

    2006-04-12T23:59:59.000Z

    ETHNIC NICHES, PATHWAY TO ECONOMIC INCORPORATION OR EXPLOITATION? LABOR MARKET EXPERIENCES OF LATINA/OS A Dissertation by MARIA CRISTINA MORALES Submitted to the Office of Graduate Studies of Texas A&M University... ETHNIC NICHES, PATHWAY TO ECONOMIC INCORPORATION OR EXPLOITATION? LABOR MARKET EXPERIENCES OF LATINA/OS A Dissertation by MARIA CRISTINA MORALES Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...

  10. Rural Labor Manual: Guide to the Conduct of Specific Community Educational Programs.

    E-Print Network [OSTI]

    Ruesink, David C.

    1980-01-01T23:59:59.000Z

    worked 15 hours or more as unpaid workers in an enterprise operated by a member of the family; or 2. Did not work but had jobs or businesses from which they were temporar il absent because of illness, bad weather, vacation, labor management disputes... labor require detailed infotmation regarding an employer I s hiring practices, training programs, job turnover, occupational requirements, entry level wage and existing. and/or proj ected .vacancies. In many cases, because of the large number of local...

  11. The impact of negotiation simulation in teaching labor relations at Texas A&M University

    E-Print Network [OSTI]

    Hill, Brian Joseph

    1974-01-01T23:59:59.000Z

    , Walter R. ; and Gall, Meredith D. , Educational Research, David McKay Company, Inc. , New York, 1971. 2. Byrd, Stephen F. , Strata in Labor Relations, Prentice-Hall, Inc. , Waterford, Connecticut, 1963. 3. Canada, James, letter written to Brian J... of MASTER OF SCIENCE August 1974 Major Subject: Industrial Technology THE IMPACT OF NEGOTIATION SBSJLATION IN TEACHING LABOR RELATIONS AT TEXAS ASM UNIVERSITY A Thesis by BRIAN JOSEPH HILL Approved as to style and content by: (C irman of Committee...

  12. Sensing mode atomic force microscope

    DOE Patents [OSTI]

    Hough, Paul V. C.; Wang, Chengpu

    2006-08-22T23:59:59.000Z

    An atomic force microscope is described having a cantilever comprising a base and a probe tip on an end opposite the base; a cantilever drive device connected to the base; a magnetic material coupled to the probe tip, such that when an incrementally increasing magnetic field is applied to the magnetic material an incrementally increasing force will be applied to the probe tip; a moveable specimen base; and a controller constructed to obtain a profile height of a specimen at a point based upon a contact between the probe tip and a specimen, and measure an adhesion force between the probe tip and the specimen by, under control of a program, incrementally increasing an amount of a magnetic field until a release force, sufficient to break the contact, is applied. An imaging method for atomic force microscopy involving measuring a specimen profile height and adhesion force at multiple points within an area and concurrently displaying the profile and adhesion force for each of the points is also described. A microscope controller is also described and is constructed to, for a group of points, calculate a specimen height at a point based upon a cantilever deflection, a cantilever base position and a specimen piezo position; calculate an adhesion force between a probe tip and a specimen at the point by causing an incrementally increasing force to be applied to the probe tip until the probe tip separates from a specimen; and move the probe tip to a new point in the group.

  13. Sensing mode atomic force microscope

    DOE Patents [OSTI]

    Hough, Paul V.; Wang, Chengpu

    2004-11-16T23:59:59.000Z

    An atomic force microscope is described having a cantilever comprising a base and a probe tip on an end opposite the base; a cantilever drive device connected to the base; a magnetic material coupled to the probe tip, such that when an incrementally increasing magnetic field is applied to the magnetic material an incrementally increasing force will be applied to the probe tip; a moveable specimen base; and a controller constructed to obtain a profile height of a specimen at a point based upon a contact between the probe tip and a specimen, and measure an adhesion force between the probe tip and the specimen by, under control of a program, incrementally increasing an amount of a magnetic field until a release force, sufficient to break the contact, is applied. An imaging method for atomic force microscopy involving measuring a specimen profile height and adhesion force at multiple points within an area and concurrently displaying the profile and adhesion force for each of the points is also described. A microscope controller is also described and is constructed to, for a group of points, calculate a specimen height at a point based upon a cantilever deflection, a cantilever base position and a specimen piezo position; calculate an adhesion force between a probe tip and a specimen at the point by causing an incrementally increasing force to be applied to the probe tip until the probe tip separates from a specimen; and move the probe tip to a new point in the group.

  14. Dynamic Force AFM (Asylum) | EMSL

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    specifically for biological applications and can be used to: Study individual protein or DNA molecules in situ Image the surface of living cells Measure the adhesive forces of...

  15. Continuous Forcing Data, Darwin, Australia

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Jakob, Christian

    Long term, large scale continuous forcing data set for three complete wet seasons (2004-2005, 2005-2006 and 2006-2007) in Darwin, Australia.

  16. Three essays in labor economics: fertility expectations and career choice, specialization and the marriage premium, and estimating risk aversion using labor supply data

    E-Print Network [OSTI]

    Leonard, Megan de Linde

    2009-05-15T23:59:59.000Z

    of labor is an important cause of the wage premium. The choice of a career, whether to marry, and most other important life decisions are dependent on one's risk tolerance. The role of risk preferences in such choices is not fully understood, largely...

  17. Labor Institutions and Market PerformanceLabor Institutions and Market Performance An AgentAn Agent--Based Computational Economics ApproachBased Computational Economics Approach

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    are encapsulated software programs capable of - AdaptationAdaptation to environmental conditions - Social://www.econ.iastate.edu/tesfatsi/aapplic.htm )(http://www.econ.iastate.edu/tesfatsi/aapplic.htm ) Embodied cognition Network formation Financial Economics Labor Markets Industrial organization Macroeconomics Technological change and economic growth

  18. Air Force Enhanced Use Lease

    Broader source: Energy.gov (indexed) [DOE]

    S e r v i c e - E x c e l l e n c e Headquarters U.S. Air Force 1 Air Force Enhanced Use Lease Mr. Brian Brown 16 Oct. 12 I n t e g r i t y - S e r v i c e - E x c e l l e n c e 2...

  19. Air Force Renewable Energy Programs

    Broader source: Energy.gov (indexed) [DOE]

    in All We Do" I n t e g r i t y - S e r v i c e - E x c e l l e n c e THINK GREEN, BUILD GREEN, Topics Air Force Energy Use Air Force Facility Energy Center Current RE...

  20. Protective Force Firearms Qualification Courses

    Broader source: Energy.gov (indexed) [DOE]

    points; Protective Force Firearms Qualification Courses Section A Appendix 4 July 2011 4-3 d. a projectile print within or cutting the outer ring is 2 points; and e. a projectile...

  1. Estimation of a supply and demand model for the hired farm labor market in Texas

    E-Print Network [OSTI]

    Turley, Keith Pool

    1977-01-01T23:59:59.000Z

    labor in Texas increased from -0. 8 in 1951 to -2. 8 in 1975, while the long run wage elasticity of demand increased from -1. 0 to -3. 5 during the same time period. The hypothesis that Mexican immigration has had a direct influence on the supply... be expected to cause a 0. 3 per- cent short-run increase in the supply of hired farm labor in Texas, and a 0. 1 percent short-run decrease in the farm wage rate, while the long-run effect on the wage rate would be a 0. 4 percent decrease from the 1975...

  2. Prediction of vehicle impact forces

    E-Print Network [OSTI]

    Kaderka, Darrell Laine

    1990-01-01T23:59:59.000Z

    PREDICTION OF VEHICLE IMPACT FORCES A Thesis by DARRELL LAINE KADERKA Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1990 Major Subject...: Civil Engineering PREDICTION OF VEHICLE IMPACT FORCES A Thesis by DARRELL LAINE KADERKA Approved as to style and content by: C. Eugene Buth (Chair of Committee) W. ynn Beason (Member) I? D n E. B ay (Member) es T. P. Yao (Departmen Head) May...

  3. Prediction of vehicle impact forces 

    E-Print Network [OSTI]

    Kaderka, Darrell Laine

    1990-01-01T23:59:59.000Z

    PREDICTION OF VEHICLE IMPACT FORCES A Thesis by DARRELL LAINE KADERKA Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1990 Major Subject...: Civil Engineering PREDICTION OF VEHICLE IMPACT FORCES A Thesis by DARRELL LAINE KADERKA Approved as to style and content by: C. Eugene Buth (Chair of Committee) W. ynn Beason (Member) I? D n E. B ay (Member) es T. P. Yao (Departmen Head) May...

  4. Strong wind forcing of the ocean

    E-Print Network [OSTI]

    Zedler, Sarah E.

    2007-01-01T23:59:59.000Z

    latitudes, tropical storm force winds may be sufficient tolocation where hurricane force winds arrive at the region.shear data. The wind stress used to force these model was

  5. Econometric and Neural Network Analysis of the Labor Productivity and Average Gross Earnings Indices in the Romanian Industry

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Econometric and Neural Network Analysis of the Labor Productivity and Average Gross Earnings and models that were used consist of several lag econometric models, ARIMA processes, as well as feed forward AGEI and LPI. Key-Words: - labor productivity, econometric model, ARIMA, VAR, neural network, forecast

  6. U.S. Air Force Fact Sheet Air Force Reserve Officer Training Corps

    E-Print Network [OSTI]

    Su, Xiao

    U.S. Air Force Fact Sheet Air Force Reserve Officer Training Corps Mission Develop Quality Leaders for the Air Force. Personnel and Resources Air Force Reserve Officer Training Corps (ROTC) includes four,796 new Second Lieutenants who entered active duty in the United States Air Force. Organization Air Force

  7. Forces in electromagnetic field and gravitational field

    E-Print Network [OSTI]

    Zihua Weng

    2011-03-31T23:59:59.000Z

    The force can be defined from the linear momentum in the gravitational field and electromagnetic field. But this definition can not cover the gradient of energy. In the paper, the force will be defined from the energy and torque in a new way, which involves the gravitational force, electromagnetic force, inertial force, gradient of energy, and some other new force terms etc. One of these new force terms can be used to explain why the solar wind varies velocity along the magnetic force line in the interplanetary space between the sun and the earth.

  8. Improving the Labor Market Outcomes of Minorities: The Role of Employment Quota

    E-Print Network [OSTI]

    Krivobokova, Tatyana

    affirmative action policy for minorities exists in India. This paper exploits the institutional features institutions. This is used in India, Malaysia and Sri Lanka among other countries. Second is the policy of federally mandated employment quota policy to examine its effect on labor market outcomes of two distinct

  9. Davis-Bacon Labor Rates for Weatherization Work in Multifamily Buildings

    Broader source: Energy.gov [DOE]

    U.S. Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) Weatherization Assistance Program Notice 10-04 deals with labor rates (wages) for weatherization work in large multifamily buildings that comply with the Davis-Bacon Act requirements of the 2009 Recovery Act.

  10. Understanding Sectoral Labor Market Dynamics: An Equilibrium Analysis of the Oil and Gas Field Services

    E-Print Network [OSTI]

    Sadoulet, Elisabeth

    Understanding Sectoral Labor Market Dynamics: An Equilibrium Analysis of the Oil and Gas Field examines the response of employment and wages in the US oil and gas ...eld services industry to changes the dynamic response of wages and employment in the U.S. Oil and Gas Field Services (OGFS) industry to changes

  11. Montana Economy at a Glance September 2012 Montana Department of Labor & Industry Research & Analysis Bureau

    E-Print Network [OSTI]

    Lawrence, Rick L.

    Montana Economy at a Glance September 2012 Montana Department of Labor & Industry Research to the economy over the last decade and helping to stabilize the Montana economy during the 2007-2010 recession The healthcare industry plays a positive and inte- gral role in the state's economy.Figure one shows the percent

  12. UW Hazard Communication Program A Washington State Department of Labor and

    E-Print Network [OSTI]

    Wilcock, William

    UW Hazard Communication Program A Washington State Department of Labor and Industries standard called Hazard Communication (Right-to-Know) requires that all employees be informed about hazardous on manufacturer's containers of hazardous chemicals provide identification of the chemical, immediate hazard

  13. Cyclical adjustment, capital-labor substitution and total factor productivity convergence East Germany after unification

    E-Print Network [OSTI]

    Pfeifer, Holger

    Cyclical adjustment, capital-labor substitution and total factor productivity convergence ­ East integration and massive help from the Federal Government East German productivity catching up faded out in the nineties. This paper presents panel-data estimates of the productivity adjustment based on a production

  14. Social Network Structure, Segregation, and Equality in a Labor Market with Referral Hiring

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    Social Network Structure, Segregation, and Equality in a Labor Market with Referral Hiring Troy Univer- sity, Bronx, NY 10458. telephone: (718) 817-4793. 1 #12;Social Network Structure, Segregation the effects of social network structure on group level inequality. Our study departs from many studies

  15. Sensing mode atomic force microscope

    DOE Patents [OSTI]

    Hough, Paul V. C. (Port Jefferson, NY); Wang, Chengpu (Upton, NY)

    2003-01-01T23:59:59.000Z

    An atomic force microscope utilizes a pulse release system and improved method of operation to minimize contact forces between a probe tip affixed to a flexible cantilever and a specimen being measured. The pulse release system includes a magnetic particle affixed proximate the probe tip and an electromagnetic coil. When energized, the electromagnetic coil generates a magnetic field which applies a driving force on the magnetic particle sufficient to overcome adhesive forces exhibited between the probe tip and specimen. The atomic force microscope includes two independently displaceable piezo elements operable along a Z-axis. A controller drives the first Z-axis piezo element to provide a controlled approach between the probe tip and specimen up to a point of contact between the probe tip and specimen. The controller then drives the first Z-axis piezo element to withdraw the cantilever from the specimen. The controller also activates the pulse release system which drives the probe tip away from the specimen during withdrawal. Following withdrawal, the controller adjusts the height of the second Z-axis piezo element to maintain a substantially constant approach distance between successive samples.

  16. Nuclear force in Lattice QCD

    E-Print Network [OSTI]

    T. T. Takahashi; T. Doi; H. Suganuma

    2006-01-05T23:59:59.000Z

    We perform the quenched lattice QCD analysis on the nuclear force (baryon-baryon interactions). We employ $20^3\\times 24$ lattice at $\\beta=5.7$ ($a\\simeq 0.19$ fm) with the standard gauge action and the Wilson quark action with the hopping parameters $\\kappa=0.1600, 0.1625, 0.1650$, and generate about 200 gauge configurations. We measure the temporal correlators of the two-baryon system which consists of heavy-light-light quarks. We extract the inter-baryon force as a function of the relative distance $r$. We also evaluate the contribution to the nuclear force from each ``Feynman diagram'' such as the quark-exchange diagram individually, and single out the roles of Pauli-blocking effects or quark exchanges in the inter-baryon interactions.

  17. Forcing in Strategic Belief Models

    E-Print Network [OSTI]

    Tohmè, Fernando; Gangle, Rocco

    2012-01-01T23:59:59.000Z

    Forcing is a methodology for building models of Set Theory satisfying certain properties. Since its inception by Paul Cohen, in the early 1960s, it has been applied to several areas in Mathematical Logic, becoming a powerful tool in the analysis of axiomatic systems. In this paper we extend the applicability of forcing to game-theoretic strategic belief models. In particular, we propose a very general notion of solutions for such games by enlarging Brandenburger's $RmAR$ condition via extension through generic types.

  18. Automatic HTS force measurement instrument

    DOE Patents [OSTI]

    Sanders, Scott T. (Valparaiso, IN); Niemann, Ralph C. (Downers Grove, IL)

    1999-01-01T23:59:59.000Z

    A device for measuring the levitation force of a high temperature superconductor sample with respect to a reference magnet includes a receptacle for holding several high temperature superconductor samples each cooled to superconducting temperature. A rotatable carousel successively locates a selected one of the high temperature superconductor samples in registry with the reference magnet. Mechanism varies the distance between one of the high temperature superconductor samples and the reference magnet, and a sensor measures levitation force of the sample as a function of the distance between the reference magnet and the sample. A method is also disclosed.

  19. Automatic HTS force measurement instrument

    DOE Patents [OSTI]

    Sanders, S.T.; Niemann, R.C.

    1999-03-30T23:59:59.000Z

    A device is disclosed for measuring the levitation force of a high temperature superconductor sample with respect to a reference magnet includes a receptacle for holding several high temperature superconductor samples each cooled to superconducting temperature. A rotatable carousel successively locates a selected one of the high temperature superconductor samples in registry with the reference magnet. Mechanism varies the distance between one of the high temperature superconductor samples and the reference magnet, and a sensor measures levitation force of the sample as a function of the distance between the reference magnet and the sample. A method is also disclosed. 3 figs.

  20. Solvent-induced forces in protein folding

    SciTech Connect (OSTI)

    Ben-Naim, A. (Hebrew Univ., Jerusalem (Israel))

    1990-08-23T23:59:59.000Z

    The solvent-induced forces between various groups on the protein are examined. It is found that the intramolecular hydrophilic forces are likely to be the strongest forces mediated through the solvent. It is argued that these are probably the most important solvent-induced driving forces in the process of protein folding.

  1. October 9, 2014- SEAB Task Force Meeting

    Broader source: Energy.gov [DOE]

    SECRETARY OF ENERGY ADVISORY BOARDTask Force Meeting on Technology Development for Environmental Management (EM)

  2. Nanoscale Optical Devices: Force, Torque and Modulator

    E-Print Network [OSTI]

    Liu, Ming

    2010-01-01T23:59:59.000Z

    enhancements produced by a bowtie (Butterworth Heinemann,stronger binding forces. For bowtie structures, the field

  3. LABORATORY I FORCES AND EQUILIBRIUM

    E-Print Network [OSTI]

    Minnesota, University of

    of equilibrium is the result of a balance among all of the different forces interacting with the object (sections 1-10), chapter 4 (sections 1, 2, 5- 7), the paragraph at equation 6-13, chapter 10 (sections 5 problems before your lecturer addresses this material. So, it is very important that you read the text

  4. 5ClfVrl'5'-' ~~ Nov. '7f-An Early Energy Crisis

    E-Print Network [OSTI]

    Kammen, Daniel M.

    not fit England. The wood Wherever coal seams outcropped in To make these assertions is not to be- crisis ran out ofwood and resorted to coal. The adoption ofthe new fuel set in motion a chain ofevents was a second half of the 16th century coal vided by wind, animals and running wa- "townsman m eO's, one person

  5. The Engineering of Optical Conservative Force

    E-Print Network [OSTI]

    Du, Junjie; Ding, Kun; Du, Guiqiang; Lin, Zhifang; Chan, C T; Ng, Jack

    2015-01-01T23:59:59.000Z

    Optical forces have been fruitfully applied in a broad variety of areas that not only span the traditional scientific fields such as physics, chemistry, and biology, but also in more applied fields. It is customary and useful to split the optical force into the (conservative) gradient force and the (non-conservative) scattering and absorption force. These forces are different in attributes. The ability to tailor them will open great potential in fundamental optics and practical applications. Here, we present an analytical and a numerical approach to calculate these forces, and, with these tools, we create a fairly general class of 2D conservative optical force field. In general, particles immersed in an optical force do not obey equilibrium statistical mechanics, making the analysis complicated. With conservative forces, these issues are resolved.

  6. PV Installation Labor Market Analysis and PV JEDI Tool Developments (Presentation)

    SciTech Connect (OSTI)

    Friedman, B.

    2012-06-01T23:59:59.000Z

    The potential economic benefits of the growing renewable energy sector have led to increased federal, state, and local investments in solar industries, including federal grants for expanded workforce training for U.S. solar installers. However, there remain gaps in the data required to understand the size and composition of the workforce needed to meet the demand for solar power. Through primary research on the U.S. solar installation employer base, this report seeks to address that gap, improving policymakers and other solar stakeholders understanding of both the evolving needs of these employers and the economic opportunity associated with solar market development. Included are labor market data covering current U.S. employment, expected industry growth, and employer skill preferences for solar installation-related occupations. This study offers an in-depth look at the solar installation sectors. A study published by the Solar Foundation in October 2011 provides a census of labor data across the entire solar value chain.

  7. Estimation of the regional demand for hired farm labor: a parametric linear programming approach

    E-Print Network [OSTI]

    Cox, Thomas Lee

    1980-01-01T23:59:59.000Z

    86 86 89 93 101 TABLE OF CONTENTS (continued) Chapter Page The Linear Programming Framework Introduction Assumptions Similarities and Contrasts of Marginal and LP Analysis The Mathematical LP Model The Duality Context Derived Factor... migratory labor tha it implies. The style and f?zmat of this thesis follows that of the Amer-ican- gournN1 of Agricultural gconomj, cs. At the national level there 's growing concern over the "leakaqa" of Mexican Nationals from Southves. secondary...

  8. Centrifugal force in Kerr geometry

    E-Print Network [OSTI]

    Sai Iyer; A R Prasanna

    1992-07-31T23:59:59.000Z

    We have obtained the correct expression for the centrifugal force acting on a particle at the equatorial circumference of a rotating body in the locally non-rotating frame of the Kerr geometry. Using this expression for the equilibrium of an element on the surface of a slowly rotating Maclaurin spheroid, we obtain the expression for the ellipticity (as discussed earlier by Abramowicz and Miller) and determine the radius at which the ellipticity is maximum.

  9. Trade And Inequality With Limited Labor Mobility: Theory And Evidence From China Muqun Li and Ian Coxhead

    E-Print Network [OSTI]

    Coxhead, Ian

    A-1 Trade And Inequality With Limited Labor Mobility: Theory And Evidence From China Muqun Li ........................................................................................ 2 A.3. Trade balance conditions................................................................................ 9 A.8. Trade balance condition rewriting 2

  10. Exposure to risk and its impact on human capital : essays on combat exposure, military labor, and conflict duration

    E-Print Network [OSTI]

    Yankovich, Michael F

    2013-01-01T23:59:59.000Z

    This dissertation examines the impact of contemporaneous American participation in war on military labor and conflict duration. Chapter one uses variation in occupation-specific retention bonuses and mortality risks observed ...

  11. Innovating with institutions : how strategic orientations among one-stop career centers influence labor matching, adaptation, and performance

    E-Print Network [OSTI]

    Herranz, Joaquin

    2004-01-01T23:59:59.000Z

    Set in the context of labor market restructuring, public policy reform, and blurring government/nonprofit boundaries, this study examines the functions, adaptation, and performance of Boston's three One-Stop Career Centers ...

  12. Hydrodynamic forces on piggyback pipelines

    SciTech Connect (OSTI)

    Jakobsen, M.L.; Sayer, P. [Univ. of Strathclyde, Glasgow (United Kingdom)

    1995-12-31T23:59:59.000Z

    An increasing number of new offshore pipelines have been designed as bundles, mainly because of overall cost reductions. One popular way of combining two pipelines with different diameters is the piggyback configuration, with the smaller pipeline strapped on top of the main pipeline. The external hydrodynamic forces on this combination are at present very roughly estimated; pipeline engineers need more data to support their designs. This paper presents experimental results for the in-line hydrodynamic loading on three different piggyback set-ups. The models comprised a 0.4 m main pipeline, and three piggyback pipelines with diameters of 0.038 m, 0.059 m and 0.099 m. Each small pipeline was separately mounted to the main pipeline, with a gap equal to its own diameter. These model sizes lie approximately between half- and full-scale. Experiments were undertaken for K{sub C} between 5 and 42, and R{sub e} in the range 0.0 * 10{sup 4} to 8.5 * 10{sup 5}. The results based on Morison`s equation indicate that a simple addition of the separate forces acting on each cylinder underestimates the actual force by up to 35% at low K{sub C} (< {approximately} 10) and by as much as 100% in the drag-dominated regime (K{sub C} > {approximately} 20).

  13. Friction forces in cosmological models

    E-Print Network [OSTI]

    Donato Bini; Andrea Geralico; Daniele Gregoris; Sauro Succi

    2014-08-23T23:59:59.000Z

    We investigate the dynamics of test particles undergoing friction forces in a Friedmann-Robertson-Walker (FRW) spacetime. The interaction with the background fluid is modeled by introducing a Poynting-Robertson-like friction force in the equations of motion, leading to measurable (at least in principle) deviations of the particle trajectories from geodesic motion. The effect on the peculiar velocities of the particles is investigated for various equations of state of the background fluid and different standard cosmological models. The friction force is found to have major effects on particle motion in closed FRW universes, where it turns the time-asymptotic value (approaching the recollapse) of the peculiar particle velocity from ultra-relativistic (close to light speed) to a co-moving one, i.e., zero peculiar speed. On the other hand, for open or flat universes the effect of the friction is not so significant, because the time-asymptotic peculiar particle speed is largely non-relativistic also in the geodesic case.

  14. On Dynamic Models of Robot Force Control

    E-Print Network [OSTI]

    Eppinger, Steven D.

    1986-07-01T23:59:59.000Z

    For precise robot control, endpoint compliance strategies utilize feedback from a force sensor located near the tool/workpiece interface. Such endpoint force control systems have been observed in the laboratory to be ...

  15. Handheld force-controlled ultrasound probe

    E-Print Network [OSTI]

    Gilbertson, Matthew Wright

    2010-01-01T23:59:59.000Z

    An hand-held force controlled ultrasound probe has been developed. The controller maintains a prescribed contact force between the probe and a patient's body. The device will enhance the diagnostic capability of free-hand ...

  16. Nuclear Radiological Threat Task Force Established | National...

    National Nuclear Security Administration (NNSA)

    Radiological Threat Task Force Established | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing...

  17. Glacial cycles and astronomical forcing

    SciTech Connect (OSTI)

    Muller, R.A. [Lawrence Berkeley Lab., CA (United States)] [Lawrence Berkeley Lab., CA (United States); MacDonald, G.J. [International Institute for Applied Systems Analysis, Laxenburg (Austria)] [International Institute for Applied Systems Analysis, Laxenburg (Austria)

    1997-07-11T23:59:59.000Z

    Narrow spectral features in ocean sediment records offer strong evidence that the cycles of glaciation were driven by astronomical forces. Two million years ago, the cycles match the 41,000-year period of Earth`s obliquity. This supports the Croll/Milankovitch theory, which attributes the cycles to variations in insolation. But for the past million years, the spectrum is dominated by a single 100,000-year feature and is a poor match to the predictions of insolation models. The spectrum can be accounted for by a theory that derives the cycles of glaciation from variations in the inclination of Earth`s orbital plane.

  18. Thermomagnetic Force in Polyatomic Gases

    E-Print Network [OSTI]

    Larchez, M. E.; Adair, Thomas W.

    1971-01-01T23:59:59.000Z

    decreases as H/P is increased above about 500 Oe/Torr. Another difference in the two effects is that the SB effect is a universal function of H/P for the entire range of values covered. This does not appear to be true in the force effect. For NO... magnetic field also causes a de- crease in the shear viscosity of oxygen. These effects in Oz were later observed in NO and were extensively studied. It was observed that the trans- port coefficients decrease in a magnetic field 8, that the effect...

  19. Modeling forces in high-temperature superconductors

    SciTech Connect (OSTI)

    Turner, L. R.; Foster, M. W.

    1997-11-18T23:59:59.000Z

    We have developed a simple model that uses computed shielding currents to determine the forces acting on a high-temperature superconductor (HTS). The model has been applied to measurements of the force between HTS and permanent magnets (PM). Results show the expected hysteretic variation of force as the HTS moves first toward and then away from a permanent magnet, including the reversal of the sign of the force. Optimization of the shielding currents is carried out through a simulated annealing algorithm in a C++ program that repeatedly calls a commercial electromagnetic software code. Agreement with measured forces is encouraging.

  20. Air Force Research Laboratory Placement: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson

    E-Print Network [OSTI]

    Alpay, S. Pamir

    Air Force Research Laboratory Placement: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton OH Discipline(s): Materials science/engineering, chemical. Description: We are looking for a qualified candidate to join our team at the Air Force Research Laboratory

  1. Wood Fuel Task Force Response 2 | Wood Fuel Task Force Response

    E-Print Network [OSTI]

    Wood Fuel Task Force Response #12;2 | Wood Fuel Task Force Response #12;Wood Fuel Task Force Response | 3 Wood Fuel Task Force Response Scottish Government response by Minister for Environment, Michael Russell I am pleased to present on behalf of the Scottish Government our response to the Wood Fuel

  2. Direct measurement of thermophoretic forces

    E-Print Network [OSTI]

    Laurent Helden; Ralf Eichhorn; Clemens Bechinger

    2014-12-19T23:59:59.000Z

    We study the thermophoretic motion of a micron sized single colloidal particle in front of a flat wall by evanescent light scattering. To quantify thermophoretic effects we analyse the nonequilibrium steady state (NESS) of the particle in a constant temperature gradient perpendicular to the confining walls. We propose to determine thermophoretic forces from a 'generalized potential' associated with the probability distribution of the particle position in the NESS. Experimentally we demonstrate, how this spatial probability distribution is measured and how thermophoretic forces can be extracted with 10 fN resolution. By varying temperature gradient and ambient temperature, the temperature dependence of Soret coefficient $S_T(T)$ is determined for $r = 2.5 \\mu m$ polystyrene and $r = 1.35 \\mu m$ melamine particles. The functional form of $S_T(T)$ is in good agreement with findings for smaller colloids. In addition, we measure and discuss hydrodynamic effects in the confined geometry. The theoretical and experimental technique proposed here extends thermophoresis measurements to so far inaccessible particle sizes and particle solvent combinations.

  3. Casimir force: an alternative treatment

    E-Print Network [OSTI]

    P. R. Silva

    2009-01-07T23:59:59.000Z

    The Casimir force between two parallel uncharged closely spaced metallic plates is evaluated in ways alternatives to those usually considered in the literature. In a first approximation we take in account the suppressed quantum numbers of a cubic box, representing a cavity which was cut in a metallic block. We combine these ideas with those of the MIT bag model of hadrons, but adapted to non-relativistic particles. In a second approximation we consider the particles occupying the energy levels of the Bohr atom, so that the Casimir force depends explicitly on the fine structure constant alpha. In both treatments, the mean energies which have explicit dependence on the particle mass and on the maximum occupied quantum number (related to the Fermi level of the system) at the beginning of the calculations, have these dependences mutually canceled at the end of them. Finally by comparing the averaged energies computed in both approximations, we are able to make an estimate of the value of the fine structure constant alpha.

  4. Air Force Renewable Energy Programs | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    Air Force Renewable Energy Programs Air Force Renewable Energy Programs Presentation covers Air Force Renewable Energy Programs and is given at the Spring 2011 Federal Utility...

  5. Protective Force Protocols for ESS Supported Performance Tests...

    Broader source: Energy.gov (indexed) [DOE]

    security force-on-force performance tests and exercises. Protective Force Protocols for ESS Supported Performance Tests and Exercises, March 12, 2007 More Documents & Publications...

  6. Dark Forces At The Tevatron

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Buckley, Matt [Fermilab; Fileviez Perez, Pavel [Wisconsin U., Madison; Hooper, Dan [Fermilab; Chicago U., Astron. Astrophys. Ctr.; Neil, Ethan [Fermilab

    2011-08-19T23:59:59.000Z

    A simple explanation of the W + dijet excess recently reported by the CDF collaboration involves the introduction of a new gauge boson with sizable couplings to quarks, but with no or highly suppressed couplings to leptons. Anomaly-free theories which include such a leptophobic gauge boson must also include additional particle content, which may include a stable and otherwise viable candidate for dark matter. Based on the couplings and mass of the Z` required to generate the CDF excess, we predict such a dark matter candidate to possess an elastic scattering cross section with nucleons on the order of ? ~ 10-40 cm2, providing a natural explanation for the signals reported by the CoGeNT and DAMA/LIBRA collaborations. In this light, CDF may be observing the gauge boson responsible for the force which mediates the interactions between the dark and visible matter of our universe.

  7. Economic perturbations and fetal growth: A multilevel analysis of exposure to labor market insecurity during gestation and birth weight for gestational age

    E-Print Network [OSTI]

    Margerison-Zilko, Claire E.

    2011-01-01T23:59:59.000Z

    Mean birth weight percentile did not differ significantlyto labor market security and birth weight percentile.Mean birth weight percentile was lower, although not

  8. The role of executive capital and the market for alternative candidates in CEO dismissal and labor market consequences for dismissed chief executives

    E-Print Network [OSTI]

    Schepker, Donald Joseph

    2012-08-31T23:59:59.000Z

    ......................................................... 41 Firm Performance and Executive Dismissal...................................................... 42 The Interaction of Performance and Executive Dismissal.......................... 42 The Interaction of Performance and the Managerial Labor...

  9. Fast Computation of Optimal Contact Forces

    E-Print Network [OSTI]

    2007-09-28T23:59:59.000Z

    and force optimization for the legs of a quadruped robot [21]. Some experimental ... Applications that involve the solution of many FOPs, such as finding the ...

  10. Interagency Energy Management Task Force Members

    Broader source: Energy.gov [DOE]

    The Interagency Energy Management Task Force is led by the Federal Energy Management Program director. Members include energy and sustainability managers from federal agencies.

  11. Nuclear forces from chiral effective field theory

    E-Print Network [OSTI]

    R. Machleidt

    2007-04-05T23:59:59.000Z

    In this lecture series, I present the recent progress in our understanding of nuclear forces in terms of chiral effective field theory.

  12. Ellsworth Air Force Base Advanced Metering Project

    Broader source: Energy.gov [DOE]

    Presentation covers the Ellsworth Air Force Base Advanced Metering project and is given at the Spring 2010 Federal Utility Partnership Working Group (FUPWG) meeting in Providence, Rhode Island.

  13. Reduction of the Casimir force using aerogels

    E-Print Network [OSTI]

    Esquivel-Sirvent, R

    2007-01-01T23:59:59.000Z

    By using silicon oxide based aerogels we show numerically that the Casimir force can be reduced several orders of magnitude, making its effect negligible in nanodevices. This decrease in the Casimir force is also present even when the aerogels are deposited on metallic substrates. To calculate the Casimir force we model the dielectric function of silicon oxide aerogels using an effective medium dielectric function such as the Clausius-Mossotti approximation. The results show that both the porosity of the aerogel and its thickness can be use as control parameters to reduce the magnitude of the Casimir force.

  14. Reduction of the Casimir force using aerogels

    E-Print Network [OSTI]

    R. Esquivel-Sirvent

    2007-08-02T23:59:59.000Z

    By using silicon oxide based aerogels we show numerically that the Casimir force can be reduced several orders of magnitude, making its effect negligible in nanodevices. This decrease in the Casimir force is also present even when the aerogels are deposited on metallic substrates. To calculate the Casimir force we model the dielectric function of silicon oxide aerogels using an effective medium dielectric function such as the Clausius-Mossotti approximation. The results show that both the porosity of the aerogel and its thickness can be use as control parameters to reduce the magnitude of the Casimir force.

  15. Few-nucleon forces from chiral Lagrangians

    SciTech Connect (OSTI)

    van Kolck, U. (Department of Physics, FM-15, University of Washington, Seattle, Washington 98195 (United States))

    1994-06-01T23:59:59.000Z

    Few-nucleon forces are considered from the point of view of effective chiral Lagrangians. It is argued that such forces naturally arise at the same order in chiral perturbation theory as some important features of the two-nucleon force. In particular, the leading few-nucleon forces cancel against the leading recoil correction in the iteration of the two-body potential. The remaining three-body potential is presented in momentum and coordinate spaces. It is dominated by contributions of the delta isobar of (i) two-pion range, which are not new, and (ii) shorter range, which involve an undetermined parameter.

  16. Document prepared by APIC Bioterrorism Task Force

    E-Print Network [OSTI]

    Oliver, Douglas L.

    ATTACHMENT Document prepared by APIC Bioterrorism Task Force Judith F. English, Mae Y. Cundiff of civilian populations not recommended. 3. Infection Control Practices for Patient Management Symptomatic

  17. Nuclear Force from Lattice QCD

    E-Print Network [OSTI]

    Noriyoshi ISHII; Sinya AOKI; Tetsuo HATSUDA

    2006-09-30T23:59:59.000Z

    The first lattice QCD result on the nuclear force (the NN potential) is presented in the quenched level. The standard Wilson gauge action and the standard Wilson quark action are employed on the lattice of the size 16^3\\times 24 with the gauge coupling beta=5.7 and the hopping parameter kappa=0.1665. To obtain the NN potential, we adopt a method recently proposed by CP-PACS collaboration to study the pi pi scattering phase shift. It turns out that this method provides the NN potentials which are faithful to those obtained in the analysis of NN scattering data. By identifying the equal-time Bethe-Salpeter wave function with the Schroedinger wave function for the two nucleon system, the NN potential is reconstructed so that the wave function satisfies the time-independent Schroedinger equation. In this report, we restrict ourselves to the J^P=0^+ and I=1 channel, which enables us to pick up unambiguously the ``central'' NN potential V_{central}(r). The resulting potential is seen to posses a clear repulsive core of about 500 MeV at short distance (r < 0.5 fm). Although the attraction in the intermediate and long distance regions is still missing in the present lattice set-up, our method is appeared to be quite promising in reconstructing the NN potential with lattice QCD.

  18. Sustainability Initiative Task Force Final Report

    E-Print Network [OSTI]

    Sheridan, Jennifer

    UW­Madison Sustainability Initiative Task Force Final Report October 2010 #12;We are pleased to present the final report of the campus Sustainability Task Force. This report fulfills the charge we gave to sustainability for consideration by UW­Madison's leadership and campus community. There are many reasons why

  19. Gravitational force between two electrons in superconductors

    E-Print Network [OSTI]

    Clovis Jacinto de Matos

    2007-11-19T23:59:59.000Z

    The attractive gravitational force between two electrons in superconductors is deduced from the Eddington-Dirac large number relation, together with Beck and Mackey electromagnetic model of vacuum energy in superconductors. This force is estimated to be weaker than the gravitational attraction between two electrons in the vacuum.

  20. Water Conservation Task Force (2014 Charge)

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Water Conservation Task Force (2014 Charge) The Task Force will advise the Chancellor and Campus Provost/Executive Vice Chancellor (CP/EVC) on current and past water use and provide recommendations on implementation of policies for potable water use reductions in support of The Regents Policy on Sustainable

  1. On Dual Configurational Forces SHAOFAN LIj

    E-Print Network [OSTI]

    Li, Shaofan

    they provide the dual energy­momentum tensor. Some previously unknown and yet interesting results in elasticity the configuration force (energy­momentum tensor) P and the dual configuration force (dual energy­momentum tensor) L energy­ momentum tensor (referred to as the dual energy­momentum tensor in this j Corresponding author

  2. Air Force | Army | Marine Corps Navy & Coast Guard General of the Air Force/Army

    E-Print Network [OSTI]

    Air Force | Army | Marine Corps Navy & Coast Guard O-10 General of the Air Force/Army (Reserved Corps Navy & Coast Guard WarrantOfficers No Warrant Officer Rank Warrant Officer 1 Chief Warrant Officer Warrant Officer 5 Air Force Army Marine Corps Navy & Coast Guard E-9 Chief Master Sergeant of the Air

  3. -Z:\\OIR Repository\\^ Reports\\^ Projects\\^ TN Dept of Labor and Workforce\\Earnings of Graduates.sas -University of Memphis Office of Institutional Research --15NOV13

    E-Print Network [OSTI]

    Dasgupta, Dipankar

    -Z:\\OIR Repository\\^ Reports\\^ Projects\\^ TN Dept of Labor and Workforce\\Earnings of Graduates.sas -University of Memphis Office of Institutional Research --15NOV13 -Graduation year includes summer, fall graduation, multiplied by 4. Source: Tennessee Dept. of Labor & Workforce data files. Excludes workers

  4. Macroscopic model of scanning force microscope

    DOE Patents [OSTI]

    Guerra-Vela, Claudio; Zypman, Fredy R.

    2004-10-05T23:59:59.000Z

    A macroscopic version of the Scanning Force Microscope is described. It consists of a cantilever under the influence of external forces, which mimic the tip-sample interactions. The use of this piece of equipment is threefold. First, it serves as direct way to understand the parts and functions of the Scanning Force Microscope, and thus it is effectively used as an instructional tool. Second, due to its large size, it allows for simple measurements of applied forces and parameters that define the state of motion of the system. This information, in turn, serves to compare the interaction forces with the reconstructed ones, which cannot be done directly with the standard microscopic set up. Third, it provides a kinematics method to non-destructively measure elastic constants of materials, such as Young's and shear modules, with special application for brittle materials.

  5. Measurement of tool forces in diamond turning

    SciTech Connect (OSTI)

    Drescher, J.; Dow, T.A.

    1988-12-01T23:59:59.000Z

    A dynamometer has been designed and built to measure forces in diamond turning. The design includes a 3-component, piezoelectric transducer. Initial experiments with this dynamometer system included verification of its predicted dynamic characteristics as well as a detailed study of cutting parameters. Many cutting experiments have been conducted on OFHC Copper and 6061-T6 Aluminum. Tests have involved investigation of velocity effects, and the effects of depth and feedrate on tool forces. Velocity has been determined to have negligible effects between 4 and 21 m/s. Forces generally increase with increasing depth of cut. Increasing feedrate does not necessarily lead to higher forces. Results suggest that a simple model may not be sufficient to describe the forces produced in the diamond turning process.

  6. Muon Collider Task Force Report

    SciTech Connect (OSTI)

    Ankenbrandt, C.; Alexahin, Y.; Balbekov, V.; Barzi, E.; Bhat, C.; Broemmelsiek, D.; Bross, A.; Burov, A.; Drozhdin, A.; Finley, D.; Geer, S.; /Fermilab /Argonne /Brookhaven /Jefferson Lab /LBL, Berkeley /MUONS Inc., Batavia /UCLA /UC, Riverside /Mississippi U.

    2007-12-01T23:59:59.000Z

    Muon Colliders offer a possible long term path to lepton-lepton collisions at center-of-mass energies {radical}s {ge} 1 TeV. In October 2006 the Muon Collider Task Force (MCTF) proposed a program of advanced accelerator R&D aimed at developing the Muon Collider concept. The proposed R&D program was motivated by progress on Muon Collider design in general, and in particular, by new ideas that have emerged on muon cooling channel design. The scope of the proposed MCTF R&D program includes muon collider design studies, helical cooling channel design and simulation, high temperature superconducting solenoid studies, an experimental program using beams to test cooling channel RF cavities and a 6D cooling demonstration channel. The first year of MCTF activities are summarized in this report together with a brief description of the anticipated FY08 R&D activities. In its first year the MCTF has made progress on (1) Muon Collider ring studies, (2) 6D cooling channel design and simulation studies with an emphasis on the HCC scheme, (3) beam preparations for the first HPRF cavity beam test, (4) preparations for an HCC four-coil test, (5) further development of the MANX experiment ideas and studies of the muon beam possibilities at Fermilab, (6) studies of how to integrate RF into an HCC in preparation for a component development program, and (7) HTS conductor and magnet studies to prepare for an evaluation of the prospects for of an HTS high-field solenoid build for a muon cooling channel.

  7. Hydrodynamic force characteristics in the splash zone

    SciTech Connect (OSTI)

    Daliri, M.R.; Haritos, N. [Univ. of Melbourne, Parkville, Victoria (Australia). Dept. of Civil and Environmental Engineering

    1996-12-31T23:59:59.000Z

    A comprehensive experimental study concerned with the hydrodynamic force characteristics of both rigid and compliant surface piercing cylinders, with a major focus on the local nature of these characteristics as realized in the splash zone and in the fully submerged zone immediately below this region, has been in progress at the University of Melbourne for the last three years. This paper concentrates on a portion of this study associated with uni-directional regular wave inputs with wave steepness (H/{lambda}) in the range 0.0005--0.1580 and Keulegan-Carpenter (KC) numbers in the range 2--15 which encompasses inertia force dominant (KC<5) to drag force significant conditions (5forces (using a multi-segmented force transducer) and the underlying kinematics (using Acoustic Doppler Velocimetry) at different elevations throughout the crest to trough region were measured during the tests. The measured wave forces at different elevations have been interpreted using the Morison equation to determine experimental values of force coefficients C{sub D} and C{sub M}. The results in hand suggest that both C{sub D} and C{sub M} values in the splash zone are higher and exhibit a mild frequency dependence in comparison with their corresponding counterparts for the fully submerged segments. For weakly nonlinear waves (H/{lambda}<0.1) only wave fluctuation is found to be important and any mild nonlinearities do not significantly affect the test model force response and consequently the force coefficient values. However, for relatively nonlinear waves (0.1force response, producing ringing effects in conducive conditions.

  8. To: Frank Disalvo and Helene Schember, Cornell Center for a Sustainable Future From: Cornell Global Labor Institute

    E-Print Network [OSTI]

    Angenent, Lars T.

    -level labor and environmental leaders for the NYS Climate Action Plan, as well as federal and international-level climate policy. Building on GLI's research and educational activities, the discussion began with a brief, agriculture, urban planning and building design reveals numerous challenges and opportunities for working

  9. UAW Bonus Instructions 1. Nominator submits UAW Bonus Request Form to the University Labor designee in Human Resources (HR).

    E-Print Network [OSTI]

    UAW Bonus Instructions 1. Nominator submits UAW Bonus Request Form to the University Labor designee in Human Resources (HR). All UAW employees are eligible to receive a bonus up to three (3) time per fiscal will review for compliance and notify the UAW Bonus Review Committee of a potential UAW Bonus. 3. The UAW

  10. High-speed force mapping on living cells with a small cantilever atomic force microscope

    SciTech Connect (OSTI)

    Braunsmann, Christoph; Seifert, Jan; Rheinlaender, Johannes; Schäffer, Tilman E., E-mail: Tilman.Schaeffer@uni-tuebingen [Institute of Applied Physics and LISA, University of Tübingen, Auf der Morgenstelle 10, 72076 Tübingen (Germany)

    2014-07-15T23:59:59.000Z

    The imaging speed of the wide-spread force mapping mode for quantitative mechanical measurements on soft samples in liquid with the atomic force microscope (AFM) is limited by the bandwidth of the z-scanner and viscous drag forces on the cantilever. Here, we applied high-speed, large scan-range atomic force microscopy and small cantilevers to increase the speed of force mapping by ?10?100 times. This allowed resolving dynamic processes on living mouse embryonic fibroblasts. Cytoskeleton reorganization during cell locomotion, growth of individual cytoskeleton fibers, cell blebbing, and the formation of endocytic pits in the cell membrane were observed. Increasing the force curve rate from 2 to 300 Hz increased the measured apparent Young's modulus of the cells by about 10 times, which facilitated force mapping measurements at high speed.

  11. Sensing Current and Forces with SPM

    SciTech Connect (OSTI)

    Park, Jeong Y.; Maier, Sabine; Hendriksen, Bas; Salmeron, Miquel

    2010-07-02T23:59:59.000Z

    Atomic force microscopy (AFM) and scanning tunneling microscopy (STM) are well established techniques to image surfaces and to probe material properties at the atomic and molecular scale. In this review, we show hybrid combinations of AFM and STM that bring together the best of two worlds: the simultaneous detection of atomic scale forces and conduction properties. We illustrate with several examples how the detection of forces during STM and the detection of currents during AFM can give valuable additional information of the nanoscale material properties.

  12. A Dynamic Defense Force for Japan

    E-Print Network [OSTI]

    TAKAHASHI, Sugio

    2012-01-01T23:59:59.000Z

    Japan Self-Defense Forces (SDF). Along with the new NDPG,set a direction for the SDF in the post-9/11 inter- nationalsituation also requires the SDF take on these “dynamic”

  13. Forces on laboratory model dredge cutterhead

    E-Print Network [OSTI]

    Young, Dustin Ray

    2010-07-14T23:59:59.000Z

    Dredge cutting forces produced by the movement of the cutterhead through the sediment have been measured with the laboratory dredge carriage located at the Haynes Coastal Engineering Laboratory. The sediment bed that was used for the dredging test...

  14. Optical Force Measurements In Concentrated Colloidal Suspensions 

    E-Print Network [OSTI]

    Wilson, Laurence

    2007-01-01T23:59:59.000Z

    This work concerns the construction and testing of an optical tweezers-based force transducer, and its application to a hard-sphere colloidal system. A particle in an optical trap forward-scatters a fraction of the ...

  15. Forced orientation of graphs Babak Farzad

    E-Print Network [OSTI]

    Toronto, University of

    Forced orientation of graphs Babak Farzad Mohammad Mahdian Ebad S. Mahmoodian Amin Saberi§ Bardia, USA. (saberi@cc.gatech.edu) ¶ Department of Computer Science, UIUC, Urbana, USA. (sadri@cs.uiuc.edu) 1

  16. Accurate capacitive metrology for atomic force microscopy

    E-Print Network [OSTI]

    Mazzeo, Aaron D. (Aaron David), 1979-

    2005-01-01T23:59:59.000Z

    This thesis presents accurate capacitive sensing metrology designed for a prototype atomic force microscope (AFM) originally developed in the MIT Precision Motion Control Lab. The capacitive measurements use a set of ...

  17. Interfacial forces in chemical-mechanical polishing

    E-Print Network [OSTI]

    Ng, Dedy

    2009-05-15T23:59:59.000Z

    for planarization. The process takes place at the interface of a substrate, a polishing pad, and an abrasive containing slurry. This synergetic process involves several forces in multi-length scales and multi-mechanisms. This research contributes fundamental...

  18. SCM Forcing Data Derived from NWP Analyses

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Jakob, Christian

    Forcing data, suitable for use with single column models (SCMs) and cloud resolving models (CRMs), have been derived from NWP analyses for the ARM (Atmospheric Radiation Measurement) Tropical Western Pacific (TWP) sites of Manus Island and Nauru.

  19. Scattering theory approach to electrodynamic Casimir forces

    E-Print Network [OSTI]

    Rahi, Sahand Jamal

    We give a comprehensive presentation of methods for calculating the Casimir force to arbitrary accuracy, for any number of objects, arbitrary shapes, susceptibility functions, and separations. The technique is applicable ...

  20. Clinch River MRS Task Force Recommendations

    Broader source: Energy.gov [DOE]

    The Clinch River HRS Task Force was appointed in July 1985 by the Roane County Executive and the Oak Ridge City Council to evaluate the Monitored Retrievable Storage (MRS) facility proposed by the...

  1. Casimir forces in the time domain: Applications

    E-Print Network [OSTI]

    Johnson, Steven G.

    Our previous article [Phys. Rev. A 80, 012115 (2009)] introduced a method to compute Casimir forces in arbitrary geometries and for arbitrary materials that was based on a finite-difference time-domain (FDTD) scheme. In ...

  2. Forces on laboratory model dredge cutterhead 

    E-Print Network [OSTI]

    Young, Dustin Ray

    2010-07-14T23:59:59.000Z

    Dredge cutting forces produced by the movement of the cutterhead through the sediment have been measured with the laboratory dredge carriage located at the Haynes Coastal Engineering Laboratory. The sediment bed that was ...

  3. Micromechanical apparatus for measurement of forces

    DOE Patents [OSTI]

    Tanner, Danelle Mary; Allen, James Joe

    2004-05-25T23:59:59.000Z

    A new class of micromechanical dynamometers has been disclosed which are particularly suited to fabrication in parallel with other microelectromechanical apparatus. Forces in the microNewton regime and below can be measured with such dynamometers which are based on a high-compliance deflection element (e.g. a ring or annulus) suspended above a substrate for deflection by an applied force, and one or more distance scales for optically measuring the deflection.

  4. Agencies Approve Bacteria TMDL Task Force Recommendations 

    E-Print Network [OSTI]

    Wythe, Kathy

    2007-01-01T23:59:59.000Z

    tx H2O | pg. 10 In June 2007 the Texas Commission onEnvironmental Quality (TCEQ) and the TexasState Soil and Water Conservation Board (TSSW- CB) approved the recommendations of the Bacteria Total Maximum Daily Load (TMDL) Task Force and asked... their agencies to update their TMDL guidance documents to reflect these recommendations. They also authorized establishing a multi-agency bacteria TMDL work group to examine the research and development needs identified in the task force report. Both TCEQ...

  5. Calculation of rotordynamic forces on labyrinth seals

    E-Print Network [OSTI]

    Hensel, Steve John

    1986-01-01T23:59:59.000Z

    CALCULATION OF ROTORDYNAMIC FORCES ON LABYRINTH SEALS A Thesis STEVE JOHN HENSEL Submitted to the Graduate College of Texas AkM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE December 1986 Major... Subject: Mechanical Engineering CALCULATION OF ROTORDYNAMIC FORCES ON LABYRINTH SEALS A Thesis by STEVE JOHN HENSEL Approved as to style snd content by: David Rhode (Chairman of Committee) Erian Baskharone Leel and Garison (Member) +, gg, W. D...

  6. Zipping mechanism for force-generation by growing filament bundles

    E-Print Network [OSTI]

    Torsten Kuehne; Reinhard Lipowsky; Jan Kierfeld

    2011-03-02T23:59:59.000Z

    We investigate the force generation by polymerizing bundles of filaments, which form because of short-range attractive filament interactions. We show that bundles can generate forces by a zipping mechanism, which is not limited by buckling and operates in the fully buckled state. The critical zipping force, i.e. the maximal force that a bundle can generate, is given by the adhesive energy gained during bundle formation. For opposing forces larger than the critical zipping force, bundles undergo a force-induced unbinding transition. For larger bundles, the critical zipping force depends on the initial configuration of the bundles. Our results are corroborated by Monte Carlo simulations.

  7. Government and Industry A Force for Collaboration at the Energy...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Government and Industry A Force for Collaboration at the Energy Roadmap Update Workshop Government and Industry A Force for Collaboration at the Energy Roadmap Update Workshop...

  8. Dilution and resonance-enhanced repulsion in nonequilibrium fluctuation forces

    E-Print Network [OSTI]

    Bimonte, Giuseppe

    In equilibrium, forces induced by fluctuations of the electromagnetic field between electrically polarizable objects (microscopic or macroscopic) in vacuum are generically attractive. The force may, however, become repulsive ...

  9. Before the Senate Subcommittee on Strategic Forces - Committee...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Subcommittee on Strategic Forces - Committee on Armed Services Before the Senate Subcommittee on Strategic Forces - Committee on Armed Services Testimony of James Ownedoff, Acting...

  10. Comprehensive Energy Program at Patrick Air Force Base Set to...

    Broader source: Energy.gov (indexed) [DOE]

    Comprehensive Energy Program at Patrick Air Force Base Set to Exceed Energy Goals Comprehensive Energy Program at Patrick Air Force Base Set to Exceed Energy Goals Fact sheet...

  11. 6.641 Electromagnetic Fields, Forces, and Motion, Spring 2003

    E-Print Network [OSTI]

    Zahn, Markus, 1946-

    Electric and magnetic quasistatic forms of Maxwell's equations applied to dielectric, conduction, and magnetization boundary value problems. Electromagnetic forces, force densities, and stress tensors, including magnetization ...

  12. Federal Task Force Sends Recommendations to President on Fostering...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Task Force Sends Recommendations to President on Fostering Clean Coal Technology Federal Task Force Sends Recommendations to President on Fostering Clean Coal Technology August 12,...

  13. Hickam Air Force Base Fuel Cell Vehicles: Early Implementation...

    Broader source: Energy.gov (indexed) [DOE]

    Hickam Air Force Base Fuel Cell Vehicles: Early Implementation Experience Hickam Air Force Base Fuel Cell Vehicles: Early Implementation Experience This report sumarizes early...

  14. Collaborative Utility Task Force Partners with DOE to Develop...

    Energy Savers [EERE]

    Collaborative Utility Task Force Partners with DOE to Develop Cyber Security Requirements for Advanced Metering Infrastructure Collaborative Utility Task Force Partners with DOE to...

  15. Solar project description for Arno Kahn/Builders and Laborers Commonwealth single family residence Duluth, Minnesota

    SciTech Connect (OSTI)

    Moore, D

    1982-04-30T23:59:59.000Z

    The Arno Kahn/Builders and Laborers Commonwealth Site is a house in a Minnesota suburb. It combines a modified direct-gain sun space system with a thermal envelope. The living space is separated from the sun space by a three-story mass wall. Sunlight enters the three-story solarium and heats the mass wall which in turn heats the air. The warm air is then distributed through the thermal envelope. Manually operated shades provide night insulation for the south-facing windows, and roof overhangs and a turbine vent in the solarium roof prevent overheating. Domestic hot water is preheated in four tanks located behind the window of the basement sunroom. The concrete floor in the basement provides part of the heat storage. Wood burning stoves and electric baseboard heaters provide auxiliary heating. Five modes of operation are described: collector-to-storage, collector-to-space heating, storage-to-space heating, solarium cooling and domestic hot water preheating. The instrumentation for the National Solar Data Network is described. The solar energy portion of the construction costs is estimated to be $7000. (LEW)

  16. Health status and sulfur dioxide exposure of nickel smelter workers and civic laborers

    SciTech Connect (OSTI)

    Broder, I.; Smith, J.W.; Corey, P.; Holness, L.

    1989-04-01T23:59:59.000Z

    We examined a group of 143 nickel smelter workers who processed a high sulfide ore, and compared their health status with that of 117 civic laborers. All subjects were studied over the first four days of a week of work, administering a health questionnaire on day 1, measuring their pulmonary function on the morning of day 1 and day 4, and monitoring their personal exposure to SO/sub 2/ and particulates over the same period. The smelter workers were exposed to an average of 0.374 mg/m/sup 3/ of respirable particulates, a threefold higher level than the controls, and to 0.67 ppm of sulfur dioxide, a 40-fold greater amount than the controls, but were found to show no excess of chronic respiratory symptoms and did not differ from the controls either in their baseline pulmonary function or in their change from the morning of day 1 to day 4. However, there were several indicators of a healthy worker effect in the smelter worker group.

  17. Hydrodynamic forces and surface topography: Centimeter-scale spatial variation in wave forces

    E-Print Network [OSTI]

    Denny, Mark

    Hydrodynamic forces and surface topography: Centimeter-scale spatial variation in wave forces. On the rugose rock surfaces of wave-swept shores, interactions between substratum topography and wave-induced flow may create such a spatially variable environment. Topography Numerous investigators have explored

  18. Measurement of Dynamical Forces between Deformable Drops Using the Atomic Force Microscope. I. Theory

    E-Print Network [OSTI]

    Chan, Derek Y C

    effects of electrical double layer repulsion between oil drops charged by adsorbed surfactant mainly to hydrodynamic lubrication forces. 1. Introduction The atomic force microscope (AFM) has long, such as the interaction between rigid probe particles and oil drops1-4 or between a particle and a bubble.5

  19. Structural Dynamics The spring force is given by and F(t) is the driving force.

    E-Print Network [OSTI]

    Veress, Alexander

    by dry or Coulomb friction between rigid bodies, by internal friction between molecules within/displacement curve. #12;All vibrations are damped to some degree by friction forces. These forces may be caused a deformable body, or by fluid friction when a body moves in a fluid. These result in natural circular

  20. Estimation of Contact Forces using a Virtual Force Sensor Emanuele Magrini Fabrizio Flacco Alessandro De Luca

    E-Print Network [OSTI]

    De Luca, Alessandro

    the exchanged Cartesian forces; 4) control the robot to react according to a desired behavior. Different model Alessandro De Luca Abstract-- Physical human-robot collaboration is character- ized by a suitable exchange of contact forces between human and robot, which can occur in general at any point along the robot structure

  1. Public-private regulatory complementarities in a world of fragmented production : labor regulation in the electronics industry of Eastern Central Europe

    E-Print Network [OSTI]

    Pal, Timea

    2013-01-01T23:59:59.000Z

    The central argument of my dissertation is that national labor relation institutions where transnational private regulatory efforts are implemented influence the extent and manner of public-private regulatory complementarities. ...

  2. Re-thinking the immigrant narrative in a global perspective : representations of labor, gender and im/migration in contemporary cultural productions

    E-Print Network [OSTI]

    Mata, Irene

    2007-01-01T23:59:59.000Z

    Holt and Co. , 2001. El Norte. Dir. Gregory Nava. Cinecomand Labor In the film, El Norte, Gregory Nava provides aand Rosa Xuncax of El Norte, who believed that American

  3. Worker rights protection in Mexico's Silicon Valley : confronting low-road labor practices in high-tech manufacturing through antagonistic collaboration

    E-Print Network [OSTI]

    Salazar Salame, Héctor

    2011-01-01T23:59:59.000Z

    Front and center against a backdrop of globalization and the ensuing outsourcing of manufacturing activities to low-income countries, has been a growing interest from scholars regarding the protection of labor rights and ...

  4. A noise inequality for classical forces

    E-Print Network [OSTI]

    Dvir Kafri; J. M. Taylor

    2013-11-18T23:59:59.000Z

    Lorentz invariance requires local interactions, with force laws such as the Coulomb interaction arising via virtual exchange of force carriers such as photons. Many have considered the possibility that, at long distances or large mass scales, this process changes in some way to lead to classical behavior. Here we hypothesize that classical behavior could be due to an inability of some force carriers to convey entanglement, a characteristic measure of nonlocal, quantum behavior. We then prove that there exists a local test that allows one to verify entanglement generation, falsifying our hypothesis. Crucially, we show that noise measurements can directly verify entanglement generation. This provides a step forward for a wide variety of experimental systems where traditional entanglement tests are challenging, including entanglement generation by gravity alone between macroscopic torsional oscillators.

  5. Dynamical friction force exerted on spherical bodies

    E-Print Network [OSTI]

    O. Esquivel; B. Fuchs

    2007-04-30T23:59:59.000Z

    We present a rigorous calculation of the dynamical friction force exerted on a spherical massive perturber moving through an infinite homogenous system of field stars. By calculating the shape and mass of the polarization cloud induced by the perturber in the background system, which decelerates the motion of the perturber, we recover Chandrasekhar's drag force law with a modified Coulomb logarithm. As concrete examples we calculate the drag force exerted on a Plummer sphere or a sphere with the density distribution of a Hernquist profile. It is shown that the shape of the perturber affects only the exact form of the Coulomb logarithm. The latter converges on small scales, because encounters of the test and field stars with impact parameters less than the size of the massive perturber become inefficient. We confirm this way earlier results based on the impulse approximation of small angle scatterings.

  6. Giant vacuum forces via transmission lines

    E-Print Network [OSTI]

    Ephraim Shahmoon; Igor Mazets; Gershon Kurizki

    2014-07-23T23:59:59.000Z

    Quantum electromagnetic fluctuations induce forces between neutral particles, known as the van der Waals (vdW) and Casimir interactions. These fundamental forces, mediated by virtual photons from the vacuum, play an important role in basic physics and chemistry, and in emerging technologies involving, e.g. micro-electromechanical systems or quantum information processing. Here we show that these interactions can be enhanced by many orders of magnitude upon changing the character of the mediating vacuum-modes. By considering two polarizable particles in the vicinity of any standard electric transmission line, along which photons can propagate in one dimension (1d), we find a much stronger and longer-range interaction than in free-space. This enhancement may have profound implications on many-particle and bulk systems, and impact the quantum technologies mentioned above. The predicted giant vacuum force is estimated to be measurable in a coplanar waveguide line.

  7. Spray bottle apparatus with force multiply pistons

    DOE Patents [OSTI]

    Eschbach, Eugene A. (Richland, WA)

    1992-01-01T23:59:59.000Z

    The present invention comprises a spray bottle in which the pressure resulting from the gripping force applied by the user is amplified and this increased pressure used in generating a spray such as an aerosol or fluid stream. In its preferred embodiment, the invention includes a high pressure chamber and a corresponding piston which is operative for driving fluid out of this chamber at high pressure through a spray nozzle and a low pressure chamber and corresponding piston which is acted upon by the hydraulic pressure within the bottle resulting from the gripping force. The low pressure chamber and piston are of larger size than the high pressure chamber and piston. The pistons are rigidly connected so that the force created by the pressure acting on the piston in the low pressure chamber is transmitted to the piston in the high pressure chamber where it is applied over a more limited area thereby generating greater hydraulic pressure for use in forming the spray.

  8. Trapping atoms using nanoscale quantum vacuum forces

    E-Print Network [OSTI]

    D. E. Chang; K. Sinha; J. M. Taylor; H. J. Kimble

    2013-10-22T23:59:59.000Z

    Quantum vacuum forces dictate the interaction between individual atoms and dielectric surfaces at nanoscale distances. For example, their large strengths typically overwhelm externally applied forces, which makes it challenging to controllably interface cold atoms with nearby nanophotonic systems. Here, we show that it is possible to tailor the vacuum forces themselves to provide strong trapping potentials. The trapping scheme takes advantage of the attractive ground state potential and adiabatic dressing with an excited state whose potential is engineered to be resonantly enhanced and repulsive. This procedure yields a strong metastable trap, with the fraction of excited state population scaling inversely with the quality factor of the resonance of the dielectric structure. We analyze realistic limitations to the trap lifetime and discuss possible applications that might emerge from the large trap depths and nanoscale confinement.

  9. Conference Discussion of the Nuclear Force

    SciTech Connect (OSTI)

    Franz Gross,Thomas D. Cohen,Evgeny Epelbaum,R. Machleidt

    2010-12-01T23:59:59.000Z

    Discussion of the nuclear force, lead by a round table consisting of T. Cohen, E. Epelbaum, R. Machleidt, and F. Gross (chair). After an invited talk by Machleidt, published elsewhere in these proceedings, brief remarks are made by Epelbaum, Cohen, and Gross, followed by discussion from the floor moderated by the chair. The chair asked the round table and the participants to focus on the following issues: (1)What does each approach (chiral effective field theory, large Nc, and relativistic phenomenology) contribute to our knowledge of the nuclear force? Do we need them all? Is any one transcendent? (2) How important for applications (few body, nuclear structure, EMC effect, for example) are precise fits to the NN data below 350 MeV? How precise do these fits have to be? (3) Can we learn anything about nonperturbative QCD from these studies of the nuclear force? The discussion presented here is based on a video recording made at the conference and transcribed afterward.

  10. Computing nonlinear force free coronal magnetic fields

    E-Print Network [OSTI]

    T. Wiegelmann; T. Neukirch

    2008-01-21T23:59:59.000Z

    Knowledge of the structure of the coronal magnetic field is important for our understanding of many solar activity phenomena, e.g. flares and CMEs. However, the direct measurement of coronal magnetic fields is not possible with present methods, and therefore the coronal field has to be extrapolated from photospheric measurements. Due to the low plasma beta the coronal magnetic field can usually be assumed to be approximately force free, with electric currents flowing along the magnetic field lines. There are both observational and theoretical reasons which suggest that at least prior to an eruption the coronal magnetic field is in a nonlinear force free state. Unfortunately the computation of nonlinear force free fields is way more difficult than potential or linear force free fields and analytic solutions are not generally available. We discuss several methods which have been proposed to compute nonlinear force free fields and focus particularly on an optimization method which has been suggested recently. We compare the numerical performance of a newly developed numerical code based on the optimization method with the performance of another code based on an MHD relaxation method if both codes are applied to the reconstruction of a semi-analytic nonlinear force-free solution. The optimization method has also been tested for cases where we add random noise to the perfect boundary conditions of the analytic solution, in this way mimicking the more realistic case where the boundary conditions are given by vector magnetogram data. We find that the convergence properties of the optimization method are affected by adding noise to the boundary data and we discuss possibilities to overcome this difficulty.

  11. Modulational instability in wind-forced waves

    E-Print Network [OSTI]

    Brunetti, Maura

    2014-01-01T23:59:59.000Z

    We consider the wind-forced nonlinear Schroedinger (NLS) equation obtained in the potential flow framework when the Miles growth rate is of the order of the wave steepness. In this case, the form of the wind-forcing terms gives rise to the enhancement of the modulational instability and to a band of positive gain with infinite width. This regime is characterised by the fact that the ratio between wave momentum and norm is not a constant of motion, in contrast to what happens in the standard case where the Miles growth rate is of the order of the steepness squared.

  12. Dynamics of the Thermohaline Circulation under Wind Forcing

    E-Print Network [OSTI]

    Dynamics of the Thermohaline Circulation under Wind Forcing Hongjun Gao and Jinqiao Duan ¡ 1 external wind forcing. We show that, when there is no wind forcing, the stream function and the density. With rapidly oscillating wind forcing, we obtain an averaging principle for the thermohaline circulation model

  13. Dynamics of the Thermohaline Circulation under Wind Forcing

    E-Print Network [OSTI]

    Dynamics of the Thermohaline Circulation under Wind Forcing Hongjun Gao 1 and Jinqiao Duan 2 1 external wind forcing. We show that, when there is no wind forcing, the stream function and the density. With rapidly oscillating wind forcing, we obtain an averaging principle for the thermohaline circulation model

  14. NON-DOUBLE-COUPLE EARTHQUAKES: NET FORCES AND UNCERTAINTIES

    E-Print Network [OSTI]

    Foulger, G. R.

    NON-DOUBLE-COUPLE EARTHQUAKES: NET FORCES AND UNCERTAINTIES G.R. Foulger, B.R. Julian University-980) to include net forces in the mechanisms. Net forces are theoretically required to describe earthquakes) waves cannot resolve sources such as vertical dipoles. When source mechanisms include net forces, even

  15. Characterization of acoustically forced swirl flame dynamics

    E-Print Network [OSTI]

    Lieuwen, Timothy C.

    of the flame to acoustic excitation is required. This study presents an analysis of phase-locked OH PLIF images of acoustically excited swirl flames, to identify the key controlling physical processes and qualitatively discuss, and whose relative significance depends upon forcing frequency, amplitude of excitation, and flame

  16. Self-force approach for radiation reaction

    E-Print Network [OSTI]

    Lior M. Burko

    1999-12-13T23:59:59.000Z

    We overview the recently proposed mode-sum regularization prescription (MSRP) for the calculation of the local radiation-reaction forces, which are crucial for the orbital evolution of binaries. We then describe some new results which were obtained using MSRP, and discuss their importance for gravitational-wave astronomy.

  17. Columbia University Network Integration Task Force

    E-Print Network [OSTI]

    Yang, Junfeng

    Columbia University Network Integration Task Force Final Report II 30 January 1992 #12;1 TOWARDS A COMMON ADMINISTRATIVE AND ACADEMIC NETWORK AT COLUMBIA UNIVERSITY Columbia University's Administrative or terminal. 1.2. Executive Summary This report examines Columbia University's current academic

  18. U.S.Air Force Advanced Power

    E-Print Network [OSTI]

    Tractor · Robins AFB H2 Fuel Cell Forklift/Toolcat · Fisher-Tropsch Synthetic FuelTest · Robins E-85 Effort · Solar - Electric Drive U.S.Air Force Advanced PowerTechnology Office Our Customers TheWarfighter Homeland Defense RefuelerFuel Cell MB-4Fuel Cell Microgrid Hydrogen Refueling Station Renewable Wind Power Renewable Solar

  19. Academic Integrity Task Force Report Executive Summary

    E-Print Network [OSTI]

    Roy, Subrata

    . For a more comprehensive report of the findings as well as faculty suggestions for maintaining integrity1 Academic Integrity Task Force Report Executive Summary 11/22/11 INTRODUCTION CHARGE: To determine whether there is an issue with academic integrity at UF and, if so, to determine how widespread

  20. Dean's Task Force on Engineering Leadership

    E-Print Network [OSTI]

    Dean's Task Force on Engineering Leadership Education Final Report May 5, 2010 Doug Reeve (Chair, Membership 1. There is an Urgent Need for Engineering Le 2. Leadership Education ...8 Engineering Leaders. Capability and Compe Engineering Leadership 5 Curriculum Concepts Co-curricular Concepts Extra

  1. Galileon forces in the Solar System

    E-Print Network [OSTI]

    Melinda Andrews; Yi-Zen Chu; Mark Trodden

    2013-10-14T23:59:59.000Z

    We consider the challenging problem of obtaining an analytic understanding of realistic astrophysical dynamics in the presence of a Vainshtein screened fifth force arising from infrared modifications of General Relativity. In particular, we attempt to solve -- within the most general flat spacetime galileon model -- the scalar force law between well separated bodies located well within the Vainshtein radius of the Sun. To this end, we derive the exact static Green's function of the galileon wave equation linearized about the background field generated by the Sun, for the minimal cubic and maximally quartic galileon theories, and then introduce a method to compute the general leading order force law perturbatively away from these limits. We also show that the same nonlinearities which produce the Vainshtein screening effect present obstacles to an analytic calculation of the galileon forces between closely bound systems within the solar system, such as that of the Earth and Moon. Within the test mass approximation, we deduce that a large enough quartic galileon interaction would suppress the effect on planetary perihelion precession below the level detectable by even the next-generation experiments.

  2. Chiral effective field theory and nuclear forces

    E-Print Network [OSTI]

    R. Machleidt; D. R. Entem

    2011-05-15T23:59:59.000Z

    We review how nuclear forces emerge from low-energy QCD via chiral effective field theory. The presentation is accessible to the non-specialist. At the same time, we also provide considerable detailed information (mostly in appendices) for the benefit of researchers who wish to start working in this field.

  3. Strategic forces: Future requirements and options

    SciTech Connect (OSTI)

    Speed, R.D.

    1990-11-01T23:59:59.000Z

    In the wake of the collapse of the Warsaw Pact and the apparent ending of the Cold War, there have been renewed calls for radical cuts in US strategic forces to levels far below the 10,000 or so warheads allowed each side under the current START proposal. Since it now appears that NATO for the first time will have the capability to defeat a Soviet conventional attack without the necessity of threatening to resort to nuclear weapons, this should pave the way for the rethinking of US strategy and the reduction of US strategic weapons requirements. In this new environment, it seems plausible that, with a modification of the Flexible Response doctrine to forego attempts to disarm the Soviet Union, deterrence could be maintained with 1500 or so survivable strategic weapons. With a new strategy that confined US strategic weapons to the role of deterring the use of nuclear weapons by other countries, a survivable force of about 500 weapons would seem sufficient. With this premise, the implications for the US strategic force structure are examined for two cases: a treaty that allows each side 3000 warheads and one that allows each side 1000 warheads. In Part 1 of this paper, the weapons requirements for deterrence are examined in light of recent changes in the geopolitical environment. In Part 2, it is assumed that the President and Congress have decided that deep cuts in strategic forces are acceptable. 128 refs., 12 figs., 12 tabs. (JF)

  4. Fooling Mother Nature: Forcing Flower Bulbs

    E-Print Network [OSTI]

    Liskiewicz, Maciej

    Fooling Mother Nature: Forcing Flower Bulbs for Indoor Bloom by George Graine,Virginia Cooperative Bulbs for Indoor Bloom George Graine,Virginia Cooperative Extension Master Gardener, Fairfax County, VA Introduction Have you ever wondered if it is possible to enjoy the beauty of bulbs in the middle of winter

  5. Open Access Task Force Open Access to

    E-Print Network [OSTI]

    Jiang, Huiqiang

    Libraries Initiative launched by National Science Foundation; Social Sciences Research Network (SSRN Library System rgmiller@pitt.edu #12;Open Access Task Force Open Access is... · A family of copyright · The only constraint on reproduction and distribution, and the only role for copyright in this domain

  6. Yangtze Patrol: American Naval Forces in China

    E-Print Network [OSTI]

    Yangtze Patrol: American Naval Forces in China A Selected, Partially-Annotated Bibliography literature of the United States Navy in China. mvh #12;"Like Chimneys in Summer" The thousands of men who served on the China Station before World War II have been all but forgotten, except in the mythology

  7. Chiral lagrangians and few-nucleon forces

    SciTech Connect (OSTI)

    van Kolck, U. [Department of Physics, FM-15, University of Washington, Seattle, Washington 98195 (United States)

    1995-05-10T23:59:59.000Z

    Some of the implications of chiral symmetry to nuclear forces are considered. The few-nucleon potential is shown to be naturally weaker than the leading pieces of the two-nucleon potential, but comparable to other important features of the latter. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.

  8. Repulsive and restoring Casimir forces with left-handed materials

    E-Print Network [OSTI]

    Yaping Yang; Ran Zeng; Shutian Liu; Hong Chen; Shiyao Zhu

    2008-03-24T23:59:59.000Z

    We investigate repulsive Casimir force between slabs containing left-handed materials with controllable electromagnetic properties. The sign of Casimir force is determined by the electric and magnetic properties of the materials, and it is shown that the formation of the repulsive force is related to the wave impedances of two slabs. The sign change of the Casimir force as a function of the distance is studied. Special emphasis is put on the restoring Casimir force which may be found to exist between perfectly conducting material and metamaterial slabs. This restoring force is a natural power for the system oscillation in vacuum and also can be used for system stabilization.

  9. Friction forces on phase transition fronts

    E-Print Network [OSTI]

    Ariel Megevand

    2013-03-31T23:59:59.000Z

    In cosmological first-order phase transitions, the microscopic interaction of the phase transition fronts with non-equilibrium plasma particles manifests itself macroscopically as friction forces. In general, it is a nontrivial problem to compute these forces, and only two limits have been studied, namely, that of very slow walls and, more recently, ultra-relativistic walls which run away. In this paper we consider ultra-relativistic velocities and show that stationary solutions still exist when the parameters allow the existence of runaway walls. Hence, we discuss the necessary and sufficient conditions for the fronts to actually run away. We also propose a phenomenological model for the friction, which interpolates between the non-relativistic and ultra-relativistic values. Thus, the friction depends on two friction coefficients which can be calculated for specific models. We then study the velocity of phase transition fronts as a function of the friction parameters, the thermodynamic parameters, and the amount of supercooling.

  10. Friction forces on atoms after acceleration

    E-Print Network [OSTI]

    Francesco Intravaia; Vanik E. Mkrtchian; Stefan Buhmann; Stefan Scheel; Diego A. R. Dalvit; Carsten Henkel

    2015-02-04T23:59:59.000Z

    The aim of this paper is to revisit the calculation of atom-surface quantum friction in the quantum field theory formulation put forward by Barton [New J. Phys. 12 (2010) 113045]. We show that the power dissipated into field excitations and the associated friction force depend on how the atom is boosted from being initially at rest to a configuration in which it is moving at constant velocity (v) parallel to the planar interface. In addition, we point out that there is a subtle cancellation between the one-photon and part of the two-photon dissipating power, resulting in a leading order contribution to the frictional power which goes as v^4. These results are also confirmed by an alternative calculation of the average radiation force, which scales as v^3.

  11. 3-D Force-balanced Magnetospheric Configurations

    SciTech Connect (OSTI)

    Sorin Zaharia; C.Z. Cheng; K. Maezawa

    2003-02-10T23:59:59.000Z

    The knowledge of plasma pressure is essential for many physics applications in the magnetosphere, such as computing magnetospheric currents and deriving magnetosphere-ionosphere coupling. A thorough knowledge of the 3-D pressure distribution has however eluded the community, as most in-situ pressure observations are either in the ionosphere or the equatorial region of the magnetosphere. With the assumption of pressure isotropy there have been attempts to obtain the pressure at different locations by either (a) mapping observed data (e.g., in the ionosphere) along the field lines of an empirical magnetospheric field model or (b) computing a pressure profile in the equatorial plane (in 2-D) or along the Sun-Earth axis (in 1-D) that is in force balance with the magnetic stresses of an empirical model. However, the pressure distributions obtained through these methods are not in force balance with the empirical magnetic field at all locations. In order to find a global 3-D plasma pressure distribution in force balance with the magnetospheric magnetic field, we have developed the MAG-3D code, that solves the 3-D force balance equation J x B = (upside-down delta) P computationally. Our calculation is performed in a flux coordinate system in which the magnetic field is expressed in terms of Euler potentials as B = (upside-down delta) psi x (upside-down delta) alpha. The pressure distribution, P = P(psi,alpha), is prescribed in the equatorial plane and is based on satellite measurements. In addition, computational boundary conditions for y surfaces are imposed using empirical field models. Our results provide 3-D distributions of magnetic field and plasma pressure as well as parallel and transverse currents for both quiet-time and disturbed magnetospheric conditions.

  12. Exploring medium effects on the nuclear force

    SciTech Connect (OSTI)

    F. Sammarruca

    2004-04-18T23:59:59.000Z

    This STI product contains a description of results from theoretical studies in nuclear physics. The goal is a systematic investigation of the nuclear force in the nuclear medium. The problems addressed are: density-dependent effective interactions as seen through proton-nucleus reactions, nuclear matter with unequal densities of protons and neutrons, applications to asymmetric nuclei through predictions of neutron radii and neutron skins.

  13. Entropic-force dark energy reconsidered

    E-Print Network [OSTI]

    Spyros Basilakos; Joan Sola

    2014-05-21T23:59:59.000Z

    We reconsider the entropic-force model in which both kind of Hubble terms ${\\dot H}$ and $H^{2}$ appear in the effective dark energy (DE) density affecting the evolution of the main cosmological functions, namely the scale factor, deceleration parameter, matter density and growth of linear matter perturbations. However, we find that the entropic-force model is not viable at the background and perturbation levels due to the fact that the entropic formulation does not add a constant term in the Friedmann equations. On the other hand, if on mere phenomenological grounds we replace the ${\\dot H}$ dependence of the effective DE density with a linear term $H$ without including a constant additive term, we find that the transition from deceleration to acceleration becomes possible but the recent structure formation data strongly disfavors this cosmological scenario. Finally, we briefly compare the entropic-force models with some related DE models (based on dynamical vacuum energy) which overcome these difficulties and are compatible with the present observations.

  14. Squeeze bottle apparatus with force multiplying pistons

    DOE Patents [OSTI]

    Moss, Owen R. (Cary, NC); Gordon, Norman R. (Kennewick, WA); DeFord, Henry S. (Kennewick, WA); Eschbach, Eugene A. (Richland, WA)

    1994-01-01T23:59:59.000Z

    The present invention comprises a spray bottle in which the pressure resulting from the gripping force applied by the user is amplified and this increased pressure used in generating a spray such as an aerosol or fluid stream. In its preferred embodiment, the invention includes a high pressure chamber and a corresponding piston which is operative for driving fluid out of this chamber at high pressure through a spray nozzle and a low pressure chamber, and a corresponding piston which is acted upon by the hydraulic pressure within the bottle resulting from the gripping force. The low pressure chamber and piston are of larger size than the high pressure chamber and piston. The pistons are rigidly connected so that the force created by the pressure acting on the piston in the low pressure chamber is transmitted to the piston in the high pressure chamber where it is applied over a more limited area, thereby generating greater hydraulic pressure for use in forming the spray.

  15. Forced cooling of underground electric power transmission lines : design manual

    E-Print Network [OSTI]

    Brown, Jay A.

    1978-01-01T23:59:59.000Z

    The methodology utilized for the design of a forced-cooled pipe-type underground transmission system is presented. The material is divided into three major parts: (1) The Forced-cooled Pipe-Type Underground Transmission ...

  16. UNITED STATES AIR FORCE OUTSIDE THE NATIONAL CAPITAL REGION

    E-Print Network [OSTI]

    program in order to reduce Federal employee's contribution to traffic congestion and air pollutionUNITED STATES AIR FORCE OUTSIDE THE NATIONAL CAPITAL REGION PUBLIC TRANSPORTATION BENEFIT PROGRAM): ____________ City (Residence): __________________________State: _______________ Zip Code: ________________ Air Force

  17. REPORT OF THE TASK FORCE ON NUCLEAR NONPROLIFERATION

    Broader source: Energy.gov [DOE]

    The Secretary of Energy on December 20, 2013 established the Secretary of Energy Advisory Board (SEAB) Task Force on Nuclear Nonproliferation and charged the Task Force to advise the DOE on future areas of emphasis for its nuclear nonproliferation activities

  18. Transmission Services WIST Task Force Dynamic Transfer Capability...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    WIST Task Force Dynamic Transfer Capability Report - Phase I BPA is an active participant in the Wind Integration Study Team (WIST), especially the Task Force looking at DTC study...

  19. air force family: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    10spintronics-discover-could-lead-to- magnetic-batteries.php Applica'ons Motors Transformers MRI current element Forces on a Charge EQFe Analogous to the electric force: We...

  20. Natural Heritage Inventory of Schriever Air Force Base,

    E-Print Network [OSTI]

    Natural Heritage Inventory of Schriever Air Force Base, El Paso County, Colorado Colorado Natural-491-1309 July 2000 #12;Natural Heritage Inventory of Schriever Air Force Base, El Paso County, Colorado Prepared

  1. Buoyant plumes with inertial and chemical reaction-driven forcing

    E-Print Network [OSTI]

    Morris, Stephen W.

    . The forced plumes were compositionally buoy- ant and were injected with inertial forcing into a fluid filled power law relationship that explains their ascent velocity. However, the morphology of the plume heads

  2. Gregory H. Friedman: Before the Subcommittee on Strategic Forces...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Strategic Forces Committee on Armed Services U.S. House of Representatives Gregory H. Friedman: Before the Subcommittee on Strategic Forces Committee on Armed Services U.S. House...

  3. Nellis Air Force Base solar array provides model for renewable...

    Broader source: Energy.gov (indexed) [DOE]

    Nellis Air Force Base solar array provides model for renewable projects Nellis Air Force Base solar array provides model for renewable projects March 24, 2010 - 4:58pm Addthis The...

  4. air force systems: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of a piece of equipment that provides the heating energy (the furnace, boiler or heat pump) and the method used 10 U.S. Air Force Fact Sheet Air Force Reserve Officer...

  5. Magnetic nanowire based high resolution magnetic force microscope probes

    E-Print Network [OSTI]

    Qin, Lu-Chang

    -resolution magnetic force microscope probes using preformed magnetic nanowires. Nickel and cobalt nanowires produced by electrodeposition were directly assembled onto the tip of a commercial atomic force microscope cantilever

  6. Annual report on contractor work force restructuring, fiscal year 1997

    SciTech Connect (OSTI)

    NONE

    1998-03-01T23:59:59.000Z

    This report summarizes work force restructuring and community transition activities at all sites. It outlines work force restructuring activity for FY 1997, changing separation patterns, cost savings and separation costs, program assessment, activities to mitigate restructuring impacts, community transition activities, status of displaced workers, lessons learned, and emerging issues in worker and community transition. Work force restructuring and community transition activities for defense nuclear sites are summarized, as are work force restructuring activities at non-defense sites.

  7. Role of seepage forces on hydraulic fracturing and failure patterns

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Role of seepage forces on hydraulic fracturing and failure patterns Alexander Rozhko Thesis September 2007 #12;ii Role of seepage forces on hydraulic fracturing and failure patterns Abstract. The mechanical role of seepage forces on hydraulic fracturing and failure patterns was studied both

  8. The driving force of plate tectonics evaluated in spherical coordinates

    E-Print Network [OSTI]

    Donahue, John Michael

    1985-01-01T23:59:59.000Z

    &' + Ri according to the force balance equation of Garison et al (1983) . The age weighting for a ridge-push driving force model is only the age, t. 13 magnetic linea tio ns I subduction boundary force vector FIG. 4. Trench segmentation scheme. I...

  9. Enhancing Optical Gradient Forces with Metamaterials Vincent Ginis,1

    E-Print Network [OSTI]

    Enhancing Optical Gradient Forces with Metamaterials Vincent Ginis,1 Philippe Tassin,2,* Costas M demonstrate how the optical gradient force between two waveguides can be enhanced using transformation optics perceived by light, resulting in a more than tenfold enhancement of the optical force. This process

  10. CONSERVED INTEGRALS AND ENERGETIC FORCES JAMES R. RICE

    E-Print Network [OSTI]

    and the structure of inealstic constitutive relations; they also include some new results on the energetic forcesCONSERVED INTEGRALS AND ENERGETIC FORCES JAMES R. RICE Harvard University, Cambridge, MA 02138, USA ABSTRACT Conserved integrals of the Eshelby type representing energetic forces on dislocations, inclusions

  11. Comparison of Ornithopter Wind Tunnel Force Measurements with Free Flight

    E-Print Network [OSTI]

    Fearing, Ron

    Comparison of Ornithopter Wind Tunnel Force Measurements with Free Flight Cameron Rose and Ronald S flight force model from wind tunnel data is a practical approach. In this work, we compare the flight, to measured wind tunnel force and moment values. We compare the two data sets at equilibrium as a metric

  12. Measurement of friction coefficients with the atomic force microscope

    E-Print Network [OSTI]

    Attard, Phil

    Measurement of friction coefficients with the atomic force microscope Phil Attard1, Johanna axial method for measuring the friction coefficient with the atomic force microscope is given measurement by measuring the difference between the constant compliance slopes of the extend and retract force

  13. Heat release response of acoustically forced turbulent premixed flamesrole

    E-Print Network [OSTI]

    Lieuwen, Timothy C.

    Heat release response of acoustically forced turbulent premixed flames­role of kinematic surface to coherent forcing and turbulent fluctuations are coupled even at linear order in coherent forcing amplitude, ea, due to flame propagation (kinematic restoration). This coupling effectively causes

  14. ADHESION FORCES BETWEEN MICA SURFACES IN UNDERSATURATED VAPORS OF HYDROCARBONS

    E-Print Network [OSTI]

    Matsuoka, Hiroshige

    ADHESION FORCES BETWEEN MICA SURFACES IN UNDERSATURATED VAPORS OF HYDROCARBONS H. MATSUOKA1 , T] or meniscus force [3], which have been neglected in the conventional and relatively large mechani- cal systems forces between mica surfaces in under- saturated vapors of several kind of hydrocarbon liquids are mea

  15. US Air Force Facility Energy Management Program - How Industry Can Help the Air Force Meet Its Objectives

    E-Print Network [OSTI]

    Holden, P. C.; Kroop, R. H.

    1983-01-01T23:59:59.000Z

    This paper describes the Air Force's facility energy management program including how industry can help the Air Force meet its facility energy objectives. Background information on energy use and energy conservation efforts are presented to give...

  16. Laser interferometry force-feedback sensor for an interfacial force microscope

    DOE Patents [OSTI]

    Houston, Jack E.; Smith, William L.

    2004-04-13T23:59:59.000Z

    A scanning force microscope is provided with a force-feedback sensor to increase sensitivity and stability in determining interfacial forces between a probe and a sample. The sensor utilizes an interferometry technique that uses a collimated light beam directed onto a deflecting member, comprising a common plate suspended above capacitor electrodes situated on a substrate forming an interference cavity with a probe on the side of the common plate opposite the side suspended above capacitor electrodes. The probe interacts with the surface of the sample and the intensity of the reflected beam is measured and used to determine the change in displacement of the probe to the sample and to control the probe distance relative to the surface of the sample.

  17. ARM - Midlatitude Continental Convective Clouds - Single Column Model Forcing (xie-scm_forcing)

    SciTech Connect (OSTI)

    Xie, Shaocheng; McCoy, Renata; Zhang, Yunyan

    2012-10-25T23:59:59.000Z

    The constrained variational objective analysis approach described in Zhang and Lin [1997] and Zhang et al. [2001]was used to derive the large-scale single-column/cloud resolving model forcing and evaluation data set from the observational data collected during Midlatitude Continental Convective Clouds Experiment (MC3E), which was conducted during April to June 2011 near the ARM Southern Great Plains (SGP) site. The analysis data cover the period from 00Z 22 April - 21Z 6 June 2011. The forcing data represent an average over the 3 different analysis domains centered at central facility with a diameter of 300 km (standard SGP forcing domain size), 150 km and 75 km, as shown in Figure 1. This is to support modeling studies on various-scale convective systems.

  18. ARM - Midlatitude Continental Convective Clouds - Single Column Model Forcing (xie-scm_forcing)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Xie, Shaocheng; McCoy, Renata; Zhang, Yunyan

    The constrained variational objective analysis approach described in Zhang and Lin [1997] and Zhang et al. [2001]was used to derive the large-scale single-column/cloud resolving model forcing and evaluation data set from the observational data collected during Midlatitude Continental Convective Clouds Experiment (MC3E), which was conducted during April to June 2011 near the ARM Southern Great Plains (SGP) site. The analysis data cover the period from 00Z 22 April - 21Z 6 June 2011. The forcing data represent an average over the 3 different analysis domains centered at central facility with a diameter of 300 km (standard SGP forcing domain size), 150 km and 75 km, as shown in Figure 1. This is to support modeling studies on various-scale convective systems.

  19. Coke cake behavior under compressive forces

    SciTech Connect (OSTI)

    Watakabe, S.; Takeda, T.; Itaya, H.; Suginobe, H.

    1997-12-31T23:59:59.000Z

    The deformation of the coke cake and load on the side wall during pushing were studied using an electric furnace equipped with a movable wall. Coke cake was found to deform in three stages under compressive forces. The coke cake was shortened in the pushing direction in the cake deformation stage, and load was generated on the side walls in the high wall load stage. Secondary cracks in the coke cake were found to prevent load transmission on the wall. The maximum load transmission rate was controlled by adjusting the maximum fluidity and mean reflectance of the blended coal.

  20. EPA may force scrubbers on industry boilers

    SciTech Connect (OSTI)

    Hume, M.

    1985-05-13T23:59:59.000Z

    An Environmental Protection Agency (EPA) proposal requiring scrubber standards for industrial energy users will force industry to invest in the costly pollution control equipment used mostly by utilities today. The New Source Performance Standards (NSPS) for sulfur dioxide emissions will require either scrubbing or fluidized-bed combustion regardless of the fuel's sulfur content. Protests from the Council of Industrial Boiler Owners that this is an unfair burden on non-utility boilers note that scrubbing is more costly for smaller boilers, and that it could impede air quality improvement by discouraging the replacement of old boilers. EPA contests these claims.

  1. 136Sn and three body forces

    E-Print Network [OSTI]

    M. Saha Sarkar; S. Sarkar

    2014-11-10T23:59:59.000Z

    New experimental data on 2+ energies of 136,138Sn confirms the trend of lower 2+ excitation energies of even-even tin isotopes with N > 82 compared to those with N 4+)) of these nuclei, simultaneously, apart from one whose matrix elements have been changed empirically to produce mixed seniority states by weakening pairing. We have shown that the experimental result also shows good agreement with the theory in which three body forces have been included in a realistic interaction. The new theoretical results on transition probabilities have been discussed to identify the experimental quantities which will clearly distinguish between different views.

  2. Force 9 Energy | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluating A PotentialJumpGermanFife Energy Park atFisiaFlorida: EnergyFlyingForbesForce

  3. Hickam Air Force Base | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet), GeothermalGridHYDROGEN TOTechnology Validation » Hickam Air Force

  4. Force generation by Myosin II Filaments in Compliant Networks

    E-Print Network [OSTI]

    Samantha Stam; Jon Alberts; Margaret L. Gardel; Edwin Munro

    2014-07-08T23:59:59.000Z

    Myosin II isoforms with varying mechanochemistry and filament size interact with filamentous actin (F-actin) networks to generate contractile forces in cells. How their properties control force production in environments with varying stiffness is poorly understood. Here, we incorporated literature values for properties of myosin II isoforms into a cross-bridge model. Similar actin gliding speeds and force-velocity curves expected from previous experiments were observed. Motor force output on an elastic load was regulated by two timescales--that of their attachment to F-actin, which varied sharply with the ensemble size, motor duty ratio, and external load, and that of force build up, which scaled with ensemble stall force, gliding speed, and load stiffness. While such regulation did not require force-dependent kinetics, the myosin catch bond produced positive feedback between attachment time and force to trigger switch-like transitions from short attachments and small forces to high force-generating runs at threshold parameter values. Parameters representing skeletal muscle myosin, non-muscle myosin IIB, and non-muscle myosin IIA revealed distinct regimes of behavior respectively: (1) large assemblies of fast, low-duty ratio motors rapidly build stable forces over a large range of environmental stiffness, (2) ensembles of slow, high-duty ratio motors serve as high-affinity cross-links with force build-up times that exceed physiological timescales, and (3) small assemblies of low-duty ratio motors operating at intermediate speeds may respond sharply to changes in mechanical context--at low forces or stiffness, they serve as low affinity cross-links but they can transition to effective force production via the positive feedback mechanism described above. These results reveal how myosin isoform properties may be tuned to produce force and respond to mechanical cues in their environment.

  5. Tunable polarity of the Casimir force based on saturated ferrites

    SciTech Connect (OSTI)

    Zeng Ran [School of Telecommunication, Hangzhou Dianzi University, Hangzhou 310018 (China); Yang Yaping [Department of Physics, Tongji University, Shanghai 200092 (China); Beijing Computational Science Research Center, Beijing 100084 (China)

    2011-01-15T23:59:59.000Z

    We study the polarity of the Casimir force between two different parallel slabs separated by vacuum when the saturated ferrite materials under the influence of an external magnetic field are taken into consideration. Between the ordinary dielectric slab and the ferrite slab, repulsive Casimir force may be observed by adjusting the applied magnetic field. For the ferrite material, we consider the frequency dependence of the permeability modified by the external magnetic field to analyze the formation of the repulsive Casimir force. The restoring force, which means the transition of the force polarity from repulsion to attraction with the increasing slab separation, can also be obtained between two different ferrite slabs.

  6. Vacuum Energy and Repulsive Casimir Forces in Quantum Star Graphs

    E-Print Network [OSTI]

    S. A. Fulling; L. Kaplan; J. H. Wilson

    2007-03-27T23:59:59.000Z

    Casimir pistons are models in which finite Casimir forces can be calculated without any suspect renormalizations. It has been suggested that such forces are always attractive, but we present several counterexamples, notably a simple type of quantum graph in which the sign of the force depends upon the number of edges. We also show that Casimir forces in quantum graphs can be reliably computed by summing over the classical orbits, and study the rate of convergence of the periodic orbit expansion. In generic situations where no analytic expression is available, the sign and approximate magnitude of Casimir forces can often be obtained using only the shortest classical orbits.

  7. Casimir Friction Force for Moving Harmonic Oscillators

    E-Print Network [OSTI]

    Johan S. Høye; Iver Brevik

    2011-11-21T23:59:59.000Z

    Casimir friction is analyzed for a pair of dielectric particles in relative motion. We first adopt a microscopic model for harmonically oscillating particles at finite temperature T moving non-relativistically with constant velocity. We use a statistical-mechanical description where time-dependent correlations are involved. This description is physical and direct, and, in spite of its simplicity, is able to elucidate the essentials of the problem. This treatment elaborates upon, and extends, an earlier theory of ours back in 1992. The energy change Delta E turns out to be finite in general, corresponding to a finite friction force. In the limit of zero temperature the formalism yields, however, Delta E ->0, this being due to our assumption about constant velocity, meaning slowly varying coupling. For couplings varying more rapidly, there will also be a finite friction force at T=0. As second part of our work, we consider the friction problem using time-dependent perturbation theory. The dissipation, basically a second order effect, is obtainable with the use of first order theory, the reason being the absence of cross terms due to uncorrelated phases of eigenstates. The third part of the present paper is to demonstrate explicitly the equivalence of our results with those recently obtained by Barton (2010); this being not a trivial task since the formal results are seemingly quite different from each other.

  8. Force budget: I. Theory and numerical methods

    E-Print Network [OSTI]

    van der Veen, Cornelis J.; Whillans, I. M.

    1989-10-05T23:59:59.000Z

    ,y) and vertical (z). Balance of forces is expressed by: 8 h- J Rxxdz8x b ~ 8 h ~ Rxx(h)- + - J Rxydz - Rxy(h)-8 +8x 8y yb (11 ) 8C1XX 8C1xy 8C1xz + + 0 (1)8x 8y 8z 8C1xy 8C1yy 8C1yz 0 (2)+ +8x 8y 8z 8 h 8x J Rxydz b (12) 8C1XZ 8C1yz 8C1ZZ + + ---- - pg = 0 (3)8x 8... are small compared to pg. This is satisfied if 8Rxz/ax = aC1xz/aX * 0 and 8Ryz/ay = aC1yz/ay * O.When the balance equations are solved numerically, this approximation is not necessary, and the value of Rzz can be obtained from Equation (3) for vertical force...

  9. Softening of Granular Packings with Dynamic Forcing

    E-Print Network [OSTI]

    C. J. Olson Reichhardt; L. M. Lopatina; X. Jia; P. A. Johnson

    2014-06-17T23:59:59.000Z

    We perform numerical simulations of a two-dimensional bidisperse granular packing subjected to both a static confining pressure and a sinusoidal dynamic forcing applied by a wall on one edge of the packing. We measure the response experienced by a wall on the opposite edge of the packing and obtain the resonant frequency of the packing as the static or dynamic pressures are varied. Under increasing static pressure, the resonant frequency increases, indicating a velocity increase of elastic waves propagating through the packing. In contrast, when the dynamic amplitude is increased for fixed static pressure, the resonant frequency decreases, indicating a decrease in the wave velocity. This occurs both for compressional and for shear dynamic forcing, and is in agreement with experimental results. We find that the average contact number $Z_c$ at the resonant frequency decreases with increasing dynamic amplitude, indicating that the elastic softening of the packing is associated with a reduced number of grain-grain contacts through which the elastic waves can travel. We image the excitations created in the packing and show that there are localized disturbances or soft spots that become more prevalent with increasing dynamic amplitude. Our results are in agreement with experiments on glass bead packings and earth materials such as sandstone and granite, and may be relevant to the decrease in elastic wave velocities that has been observed to occur near fault zones after strong earthquakes, in surficial sediments during strong ground motion, and in structures during earthquake excitation.

  10. Spin-Orbit Force from Lattice QCD

    E-Print Network [OSTI]

    K. Murano; N. Ishii; S. Aoki; T. Doi; T. Hatsuda; Y. Ikeda; T. Inoue; H. Nemura; K. Sasaki

    2014-06-19T23:59:59.000Z

    We present a first attempt to determine nucleon-nucleon potentials in the parity-odd sector, which appear in 1P1, 3P0, 3P1, 3P2-3F2 channels, in Nf=2 lattice QCD simulations. These potentials are constructed from the Nambu-Bethe-Salpeter wave functions for J^P=0^-, 1^- and 2^-, which correspond to A1^-, T1^- and T2^- + E^- representation of the cubic group, respectively. We have found a large and attractive spin-orbit potential VLS(r) in the isospin-triplet channel, which is qualitatively consistent with the phenomenological determination from the experimental scattering phase shifts. The potentials obtained from lattice QCD are used to calculate the scattering phase shifts in 1P1, 3P0, 3P1 and 3P2-3F2 channels. The strong attractive spin-orbit force and a weak repulsive central force in spin-triplet P-wave channels lead to an attraction in the 3P2 channel, which is related to the P-wave neutron paring in neutron stars.

  11. Self force on an accelerated particle

    E-Print Network [OSTI]

    Thomas M. Linz; John L. Friedman; Alan G. Wiseman

    2014-04-28T23:59:59.000Z

    We calculate the singular field of an accelerated point particle (scalar charge, electric charge or small gravitating mass) moving on an accelerated (non-geodesic) trajectory in a generic background spacetime. Using a mode-sum regularization scheme, we obtain explicit expressions for the self-force regularization parameters. In the electromagnetic and gravitational case, we use a Lorenz gauge. This work extends the work of Barack and Ori [1] who demonstrated that the regularization parameters for a point particle in geodesic motion in a Schwarzschild spacetime can be described solely by the leading and subleading terms in the mode-sum (commonly known as the $A$ and $B$ terms) and that all terms of higher order in $\\ell$ vanish upon summation (later they showed the same behavior for geodesic motion in Kerr [2], [3]). We demonstrate that these properties are universal to point particles moving through any smooth spacetime along arbitrary (accelerated) trajectories. Our renormalization scheme is based on, but not identical to, the Quinn-Wald axioms. As we develop our approach, we review and extend work showing that that different definitions of the singular field used in the literature are equivalent to our approach. Because our approach does not assume geodesic motion of the perturbing particle, we are able use our mode-sum formalism to explicitly recover a well-known result: The self-force on static scalar charges near a Schwarzschild black hole vanishes.

  12. The Role of Quantum Vacuum Forces in Microelectromechanical Systems

    E-Print Network [OSTI]

    G. Jordan Maclay

    2006-08-22T23:59:59.000Z

    The presence of boundary surfaces in the vacuum alters the ground state of the quantized electromagnetic field and can lead to the appearance of vacuum forces. In the last decade, landmark measurements of the vacuum stress between conducting uncharged parallel plates (Casimir force) have been made. Recently the first micromachined MEMS (microelectromechanical system) device was fabricated that utilizes the Casimir force between parallel plates. The force dependence allows the device to serve as a highly sensitive position sensor. The are many other examples of quantum vacuum forces and effects besides the well known parallel plate Casimir force. Here we discuss potential roles of quantum vacuum forces and effects in MEMS systems and other systems. With the growing capability in nanofabrication, some of the roles may be actualized in the future. Because of the computational complexity, no theoretical results are yet available for a number of potentially interesting geometries and we can only speculate.

  13. Centrifugal cosmological repulsive force in a homogeneous universe

    E-Print Network [OSTI]

    A. V. Klimenko; V. A. Klimenko

    2011-03-21T23:59:59.000Z

    We study the dynamics of homogeneous isotropic three-dimensional worlds filled with radiation (3R-worlds). It is shown that the dynamics of these worlds with the additional fourth large-scale spatial dimension leads to an important effect. At 3R-worlds the forces of repulsion appear. The source of these forces is the thermal energy of the radiation that fills these worlds. In the four-dimensional space, these forces are centrifugal. They operate in an external for 3R-world spatial dimension and stretch it. In the three-dimensional comoving coordinate system the centrifugal forces shows themselves as forces of repulsion. Standard Einstein's equations do not describe these forces. Written generalized Einstein's equation describing the dynamics of a homogeneous isotropic universe, taking into consideration the centrifugal forces of repulsion. We propose a cosmological model of the universe, based on these equations. This model apply to explain the observation data.

  14. Total aerosol effect: forcing or radiative flux perturbation?

    SciTech Connect (OSTI)

    Lohmann, Ulrike; Storelvmo, Trude; Jones, Andy; Rotstayn, Leon; Menon, Surabi; Quaas, Johannes; Ekman, Annica; Koch, Dorothy; Ruedy, Reto

    2009-09-25T23:59:59.000Z

    Uncertainties in aerosol forcings, especially those associated with clouds, contribute to a large extent to uncertainties in the total anthropogenic forcing. The interaction of aerosols with clouds and radiation introduces feedbacks which can affect the rate of rain formation. Traditionally these feedbacks were not included in estimates of total aerosol forcing. Here we argue that they should be included because these feedbacks act quickly compared with the time scale of global warming. We show that for different forcing agents (aerosols and greenhouse gases) the radiative forcings as traditionally defined agree rather well with estimates from a method, here referred to as radiative flux perturbations (RFP), that takes these fast feedbacks and interactions into account. Thus we propose replacing the direct and indirect aerosol forcing in the IPCC forcing chart with RFP estimates. This implies that it is better to evaluate the total anthropogenic aerosol effect as a whole.

  15. Task force reduces stuck-pipe costs

    SciTech Connect (OSTI)

    Bradley, W.B. (BP Research, Houston, TX (US)); Jarman, D. (BP Exploration Operation Co., Aberdeen (GB)); Auflick, R.A.; Plott, R.S. (BP Exploration Operating Co., Houston, TX (US)); Wood, R.D. (BP Exploration Operating Co., London (GB)); Schofield, T.R. (BP Exploration Operating Co., Beijing (CN)); Cocking, D. (BP Exploration Operating Co., Ho Chi Minh City (CN))

    1991-05-27T23:59:59.000Z

    A task-force approach to stuck pipe has produced more than a 70% reduction in BP Exploration Operating Co.'s worldwide stuck-pipe costs during 1989 and 1990. We believe that these results have been primarily due to focusing our attention on improving personnel performance rather than to the introduction of new technology. Key elements in this paper of the efforts involved: Recognizing the importance of the drilling contractor and the service company staff's role in helping control stuck pipe; Promoting a rig-team approach to tackling the problem; Providing training on rig-team, stuck-pipe problem solving; and raising awareness of stuck pipe through a coordinated worldwide communications program among BP, contractors, and service companies.

  16. Atomic force microscopy of biochemically tagged DNA

    SciTech Connect (OSTI)

    Ogletree, D.F.; Kolbe, W.; Spengler, S.; Salmeron, M. (Lawrence Berkeley Laboratory, CA (United States)); Hansma, H.G.; Bezanilla, M. (Univ. of California, Santa Barbara (United States)); Sano, T.; Smith, C.S.; Cantor, C.R. (Boston Univ., MA (United States))

    1993-05-01T23:59:59.000Z

    Small fragments of DNA of known length were made with the polymerase chain reaction. These fragments had biotin molecules covalently attached at their ends. They were subsequently labeled with a chimeric protein fusion between streptavidin and two immunoglobulin G-binding domains of staphyloccocal protein A. This tetrameric species was expected to bind up to four DNA molecules via their attached biotin moieties. The DNA-protein complex was deposited on mica and imaged with an atomic force microscope. The images revealed the protein chimera at the expected location at the ends of the strands of DNA as well as the expected dimers, trimers, and tetramers of DNA bound to a single protein. 25 refs., 5 figs.

  17. Entropic force, noncommutative gravity, and ungravity

    SciTech Connect (OSTI)

    Nicolini, Piero [Frankfurt Institute for Advanced Studies (FIAS), Institut fuer Theoretische Physik, Johann Wolfgang Goethe-Universitaet, Ruth-Moufang-Strasse 1, 60438 Frankfurt am Main (Germany)

    2010-08-15T23:59:59.000Z

    After recalling the basic concepts of gravity as an emergent phenomenon, we analyze the recent derivation of Newton's law in terms of entropic force proposed by Verlinde. By reviewing some points of the procedure, we extend it to the case of a generic quantum gravity entropic correction to get compelling deviations to the Newton's law. More specifically, we study: (1) noncommutative geometry deviations and (2) ungraviton corrections. As a special result in the noncommutative case, we find that the noncommutative character of the manifold would be equivalent to the temperature of a thermodynamic system. Therefore, in analogy to the zero temperature configuration, the description of spacetime in terms of a differential manifold could be obtained only asymptotically. Finally, we extend the Verlinde's derivation to a general case, which includes all possible effects, noncommutativity, ungravity, asymptotically safe gravity, electrostatic energy, and extra dimensions, showing that the procedure is solid versus such modifications.

  18. Expert systems and the CPI product substitution review: A needs analysis for the US Bureau of Labor Statistics

    SciTech Connect (OSTI)

    Arrowood, L.F.; Tonn, B.E.

    1992-02-01T23:59:59.000Z

    This report presents recommendations relative to the use of expert systems and machine learning techniques by the Bureau of Labor Statistics (BLS) to substantially automate product substitution decisions associated with the Consumer Price Index (CPI). Thirteen commercially available, PC-based expert system shells have received in-depth evaluations. Various machine learning techniques were also reviewed. Two recommendations are given: (1) BLS should use the expert system shell LEVEL5 OBJECT and establish a software development methodology for expert systems; and (2) BLS should undertake a small study to evaluate the potential of machine learning techniques to create and maintain the approximately 350 ELI-specific knowledge bases to be used in CPI product substitution review.

  19. Fair Labor Standards Act and Service Contract Act-Price Adjustment UT-B Contracts Div (Multiple Year and Option Contracts)

    E-Print Network [OSTI]

    Pennycook, Steve

    Fair Labor Standards Act and Service Contract Act-Price Adjustment UT-B Contracts Div (Multiple STANDARDS ACT AND SERVICE CONTRACT ACT - PRICE ADJUSTMENT (MULTIPLE YEAR AND OPTION CONTRACTS) (Sept 2009 is provided under this clause. (c) The wage determination, issued under the Service Contract Act of 1965

  20. TRAINING AND ORIENTATION AGREEMENT (Labor and Social Security Minister's Decree n. 142 of 25/03/1998, comma 4, section 5 and

    E-Print Network [OSTI]

    Cesare, Bernardo

    Rep N. Prot N. TRAINING AND ORIENTATION AGREEMENT (Labor and Social Security Minister's Decree n are entitled to promote training and orientation placements in the business world for the benefit of those who of trainees on training and orientation placements as specified in art. 5 of Decree nr. 142 of 25th March 1998

  1. WRITTEN INJURY AND ILLNESS PREVENTION PROGRAM Completion of this form indicates that it is the policy of the employer to fully comply with Labor Code

    E-Print Network [OSTI]

    Kolner, Brian H.

    that it is the policy of the employer to fully comply with Labor Code §6401.7(SB 198) and General Industry Safety Order Industry Safety Orders and other Safety Orders that apply to the operation. Review of industry and general materials, boxes, etc., may be left in walkways, inside or outside of the building. 10. Exposure to heavy

  2. For most of its history Spain had been a country of emigration--sending laborers abroad to find employment. But the latter quarter of the 20th

    E-Print Network [OSTI]

    New Hampshire, University of

    1 I. Problem For most of its history Spain had been a country of emigration--sending laborers abroad to find employment. But the latter quarter of the 20th century has seen Spains status shift from individuals to live and work in the southern European state. Immigrants to Spain come from diverse locations

  3. Economics is the study of choices. Economics programs teach people how society distributes scarce resources, such as land, labor, raw materials, and

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    Economics is the study of choices. Economics programs teach people how society distributes scarce resources, such as land, labor, raw materials, and machinery. Economics is also about much more than this. Using the tools of economics, students can better understand all kinds of choices and outcomes, ranging

  4. P:\\Cat\\LABOR\\UAW\\UAW Bonus\\UAW Bonus Form 10-31-12.docx 10/31/2012 Cahorsch 1 of 1

    E-Print Network [OSTI]

    P:\\Cat\\LABOR\\UAW\\UAW Bonus\\UAW Bonus Form 10-31-12.docx 10/31/2012 Cahorsch 1 of 1 UAW Bonus Request Form · All UAW employees are eligible to receive a bonus up to three (3) times per fiscal year the recommended bonus are eligible to nominate a qualified union member (direct supervision of the union member

  5. Multi-range force sensors utilizing shape memory alloys

    DOE Patents [OSTI]

    Varma, Venugopal K. (Knoxville, TN)

    2003-04-15T23:59:59.000Z

    The present invention provides a multi-range force sensor comprising a load cell made of a shape memory alloy, a strain sensing system, a temperature modulating system, and a temperature monitoring system. The ability of the force sensor to measure contact forces in multiple ranges is effected by the change in temperature of the shape memory alloy. The heating and cooling system functions to place the shape memory alloy of the load cell in either a low temperature, low strength phase for measuring small contact forces, or a high temperature, high strength phase for measuring large contact forces. Once the load cell is in the desired phase, the strain sensing system is utilized to obtain the applied contact force. The temperature monitoring system is utilized to ensure that the shape memory alloy is in one phase or the other.

  6. Notes 14. Experimental identification of bearing force coefficients

    E-Print Network [OSTI]

    San Andres, Luis

    2009-01-01T23:59:59.000Z

    An example of system parameter identification (Hybrid Brush Seal) Luis San Andr?s (lecturer) Thanks to Adolfo Delgado, Jos? Baker (RAs) & support from Siemens Power Generation MEEN 617 - April 2008 Structural parameters K shaft = 243 lbf/in (42...Notes 14. IDENTIFICATION OF BEARING FORCE COEFFICIENTS. ? Dr. Luis San Andr?s (2009) 1 Handout # 14 (MEEN 626) Application example Experimental identification of bearing force coefficients Experimental identification of the dynamic force...

  7. Wind forces on isolated and grouped mobile homes 

    E-Print Network [OSTI]

    Oldham, Gary Albert

    1974-01-01T23:59:59.000Z

    WIND FORCES ON ISOLATED AND GROUPED MOBILE HOMFS A Thesis by GARY ALBERT OLDHAM Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE December 1974 Major... Subject: Aerospace Engineering WIND FORCES ON ISOLATED AND GROUPED MOBILE HOMES A Thesis by GARY ALBERT OLDHAM Approved as to style and content by: (Chairman of Committee) ( a of Department (Member) (Member) December 1974 ABSTRACT Wind Forces...

  8. New Atomic Force Microscope Spectroscopy Probes Local Elasticity...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Materials Characterization New Atomic Force Microscope Spectroscopy Probes Local Elasticity March 04, 2015 Shown is a contact resonance frequency image after nano-oxidation of a...

  9. air force operations: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    the issue of path planning is addressed for unmanned air vehicles (UAVs) cooperative joint-forces electronic attack operating in a hostile environment. Specifically, the...

  10. Dynamics and length distribution of microtubules under force and confinement

    E-Print Network [OSTI]

    Björn Zelinski; Nina Müller; Jan Kierfeld

    2012-12-14T23:59:59.000Z

    We investigate the microtubule polymerization dynamics with catastrophe and rescue events for three different confinement scenarios, which mimic typical cellular environments: (i) The microtubule is confined by rigid and fixed walls, (ii) it grows under constant force, and (iii) it grows against an elastic obstacle with a linearly increasing force. We use realistic catastrophe models and analyze the microtubule dynamics, the resulting microtubule length distributions, and force generation by stochastic and mean field calculations; in addition, we perform stochastic simulations. We also investigate the force dynamics if growth parameters are perturbed in dilution experiments. Finally, we show the robustness of our results against changes of catastrophe models and load distribution factors.

  11. Synthetic Peptides Use the Force to Influence Cell Survival

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    this study investigated how positively charged PAs interact with cells when water-hating properties and hydrogen bonding (a force that holds the nanofibers together) are altered....

  12. Correlation between fundamental binding forces and clinical prognosis...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Atomic force microscopy was used to “fish” for binding reactions between a fibronectin-coated probe (i.e., substrate simulating an implant device) and each of 15...

  13. Force Field Modeling of Conformational Energies: Importance of Multipole

    E-Print Network [OSTI]

    Ponder, Jay

    Force Field Modeling of Conformational Energies: Importance of Multipole Moments and Intramolecular as the molecules become more polar. Inclusion of multipole moments and intramolecular polarization can improve

  14. Air Force Announces Funding for Alternative Energy Research & Development

    Broader source: Energy.gov [DOE]

    The Air Force Research Laboratory (AFRL) has released a Broad Area Announcement (BAA) for over $25 million for Alternative Energy Research & Development.

  15. Improved Constraints on an Axion-Mediated Force

    SciTech Connect (OSTI)

    Hoedl, S. A.; Fleischer, F.; Adelberger, E. G.; Heckel, B. R. [Center for Experimental Nuclear Physics and Astrophysics, Box 354290, University of Washington, Seattle, Washington 98195-4290 (United States)

    2011-01-28T23:59:59.000Z

    Low mass pseudoscalars, such as the axion, can mediate macroscopic parity and time-reversal symmetry-violating forces. We searched for such a force between polarized electrons and unpolarized atoms using a novel, magnetically unshielded torsion pendulum. We improved the laboratory bounds on this force by more than 10 orders of magnitude for pseudoscalars heavier than 1 meV and have constrained this force over a broad range of astrophysically interesting masses (10 {mu}eV to 10 meV).

  16. A measurable force driven by an excitonic condensate

    SciTech Connect (OSTI)

    Hakio?lu, T. [Department of Physics, Bilkent University, 06800 Ankara (Turkey); Institute of Theoretical and Applied Physics, 48740 Turunç, Mu?la (Turkey); Özgün, Ege; Günay, Mehmet [Department of Physics, Bilkent University, 06800 Ankara (Turkey)

    2014-04-21T23:59:59.000Z

    Free energy signatures related to the measurement of an emergent force (?10{sup ?9}N) due to the exciton condensate (EC) in Double Quantum Wells are predicted and experiments are proposed to measure the effects. The EC-force is attractive and reminiscent of the Casimir force between two perfect metallic plates, but also distinctively different from it by its driving mechanism and dependence on the parameters of the condensate. The proposed experiments are based on a recent experimental work on a driven micromechanical oscillator. Conclusive observations of EC in recent experiments also provide a strong promise for the observation of the EC-force.

  17. amber force fields: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Fields and Development of Improved Protein Backbone Parameters Laboratory, Upton, New York 11973, ABSTRACT The ff94 force field that is com- monly associated with the Amber a...

  18. amber force field: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Fields and Development of Improved Protein Backbone Parameters Laboratory, Upton, New York 11973, ABSTRACT The ff94 force field that is com- monly associated with the Amber a...

  19. air force plant: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    for Cooling Uninsulated Basement Systems ... 13 18 The Air Force Research Laboratory (AFRL) Scholars Program is currently Computer Technologies and Information Sciences...

  20. air force research: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    current status and opportunities MIT - DSpace Summary: There are hundreds of weapons programs, under the management of the United States Air Force worth billions of dollars. These...

  1. air force technical: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    technical design Texas at Austin, University of 20 The Air Force Research Laboratory (AFRL) Scholars Program is currently Computer Technologies and Information Sciences...

  2. air force surveys: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    for Cooling Uninsulated Basement Systems ... 13 19 The Air Force Research Laboratory (AFRL) Scholars Program is currently Computer Technologies and Information Sciences...

  3. air force petroleum: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    for Cooling Uninsulated Basement Systems ... 13 16 The Air Force Research Laboratory (AFRL) Scholars Program is currently Computer Technologies and Information Sciences...

  4. air force civil: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    for Cooling Uninsulated Basement Systems ... 13 18 The Air Force Research Laboratory (AFRL) Scholars Program is currently Computer Technologies and Information Sciences...

  5. air force institute: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    for Cooling Uninsulated Basement Systems ... 13 19 The Air Force Research Laboratory (AFRL) Scholars Program is currently Computer Technologies and Information Sciences...

  6. air force bench: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Effects for Cooling Uninsulated Basement Systems ... 13 19 The Air Force Research Laboratory (AFRL) Scholars Program is currently Computer Technologies and Information...

  7. air force installations: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    for Cooling Uninsulated Basement Systems ... 13 19 The Air Force Research Laboratory (AFRL) Scholars Program is currently Computer Technologies and Information Sciences...

  8. air force journal: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    for Cooling Uninsulated Basement Systems ... 13 16 The Air Force Research Laboratory (AFRL) Scholars Program is currently Computer Technologies and Information Sciences...

  9. Drag forces on inclusions in classical fields with dissipative dynamics

    E-Print Network [OSTI]

    Vincent Demery; D. S. Dean

    2010-04-01T23:59:59.000Z

    We study the drag force on uniformly moving inclusions which interact linearly with dynamical free field theories commonly used to study soft condensed matter systems. Drag forces are shown to be nonlinear functions of the inclusion velocity and depend strongly on the field dynamics. The general results obtained can be used to explain drag forces in Ising systems and also predict the existence of drag forces on proteins in membranes due to couplings to various physical parameters of the membrane such as composition, phase and height fluctuations.

  10. antibody recognition force: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Models of YesNo and Two-Alternative Forced-Choice Recognition Memory compared 3 models of recognition memory in their ability to generalize across yesno and...

  11. active force control: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of free-hand ... Gilbertson, Matthew Wright 2010-01-01 9 On Dynamic Models of Robot Force Control MIT - DSpace Summary: For precise robot control, endpoint compliance...

  12. Force and shape coordination in amoeboid cell motility

    E-Print Network [OSTI]

    Alonso-Latorre, Baldomero

    2010-01-01T23:59:59.000Z

    strain energy. Traction force components in wild-type cellswild-type cells To investigate the role that MyoII contractility plays in the strain energy

  13. association task force: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Directions for Information Technology at Binghamton for Research Bahgat Sammakia to lead the Task Force on Information Technology (IT). The president's original Suzuki,...

  14. aespoe task force: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Directions for Information Technology at Binghamton for Research Bahgat Sammakia to lead the Task Force on Information Technology (IT). The president's original Suzuki,...

  15. air force information: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Directions for Information Technology at Binghamton for Research Bahgat Sammakia to lead the Task Force on Information Technology (IT). The president's original Suzuki,...

  16. assessment task force: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Directions for Information Technology at Binghamton for Research Bahgat Sammakia to lead the Task Force on Information Technology (IT). The president's original Suzuki,...

  17. SciTech Connect: Gametic selection as an evolutionary force:...

    Office of Scientific and Technical Information (OSTI)

    Gametic selection as an evolutionary force: the maintenance of lethal polymorphisms in wild populations of Mus musculus Citation Details In-Document Search Title: Gametic selection...

  18. Force controlled manipulation is a common technique for compli antly contacting and manipulating uncertain environments. Visual

    E-Print Network [OSTI]

    Abstract Force controlled manipulation is a common technique for compli­ antly contacting guide a manipulator simplifies the force control problem by allowing the effective use of low gain force force sensor and a stiff manipulator position control loop. Because the force sensor measures all forces

  19. An intuitive approach to inertial forces and the centrifugal force paradox in general relativity

    E-Print Network [OSTI]

    Rickard Jonsson

    2007-08-18T23:59:59.000Z

    As the velocity of a rocket in a circular orbit near a black hole increases, the outwardly directed rocket thrust must increase to keep the rocket in its orbit. This feature might appear paradoxical from a Newtonian viewpoint, but we show that it follows naturally from the equivalence principle together with special relativity and a few general features of black holes. We also derive a general relativistic formalism of inertial forces for reference frames with acceleration and rotation. The resulting equation relates the real experienced forces to the time derivative of the speed and the spatial curvature of the particle trajectory relative to the reference frame. We show that an observer who follows the path taken by a free (geodesic) photon will experience a force perpendicular to the direction of motion that is independent of the observers velocity. We apply our approach to resolve the submarine paradox, which regards whether a submerged submarine in a balanced state of rest will sink or float when given a horizontal velocity if we take relativistic effects into account. We extend earlier treatments of this topic to include spherical oceans and show that for the case of the Earth the submarine floats upward if we take the curvature of the ocean into account.

  20. U.S. Energy Information Administration (EIA) - Pub

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    on increases in the labor force, growth of capital stocks, and improvements in productivity. Long-term demand growth depends on labor force growth, income growth, and...

  1. EIA - Annual Energy Outlook 2014 Early Release

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    on increases in the labor force, growth of capital stocks, and improvements in productivity. Long-term demand growth depends on labor force growth,income growth, and...

  2. Amsterdam Oxford Joint Rescue Forces Team Description Paper

    E-Print Network [OSTI]

    Visser, Arnoud

    Amsterdam Oxford Joint Rescue Forces Team Description Paper Virtual Robot competition Rescue van Weelden1 , Chaim Bastiaan1 , Niels Out1 , Olaf Zwennes1 , Sev´aztian Soffia Ot´arola1 , Julian de://www.jointrescueforces.eu Abstract. With the progress made in active exploration, the robots of the Joint Rescue Forces are capable

  3. Nuclear forces from chiral EFT: The unfinished business

    E-Print Network [OSTI]

    R. Machleidt; D. R. Entem

    2010-01-06T23:59:59.000Z

    In spite of the great progress we have seen in recent years in the derivation of nuclear forces from chiral effective field theory (EFT), some important issues are still unresolved. In this contribution, we discuss the open problems which have particular relevance for microscopic nuclear structure, namely, the proper renormalization of chiral nuclear potentials and sub-leading many-body forces.

  4. Surface forces: Surface roughness in theory and experiment

    SciTech Connect (OSTI)

    Parsons, Drew F., E-mail: Drew.Parsons@anu.edu.au; Walsh, Rick B.; Craig, Vincent S. J. [Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200 (Australia)] [Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200 (Australia)

    2014-04-28T23:59:59.000Z

    A method of incorporating surface roughness into theoretical calculations of surface forces is presented. The model contains two chief elements. First, surface roughness is represented as a probability distribution of surface heights around an average surface height. A roughness-averaged force is determined by taking an average of the classic flat-surface force, weighing all possible separation distances against the probability distributions of surface heights. Second the model adds a repulsive contact force due to the elastic contact of asperities. We derive a simple analytic expression for the contact force. The general impact of roughness is to amplify the long range behaviour of noncontact (DLVO) forces. The impact of the elastic contact force is to provide a repulsive wall which is felt at a separation between surfaces that scales with the root-mean-square (RMS) roughness of the surfaces. The model therefore provides a means of distinguishing between “true zero,” where the separation between the average centres of each surface is zero, and “apparent zero,” defined by the onset of the repulsive contact wall. A normal distribution may be assumed for the surface probability distribution, characterised by the RMS roughness measured by atomic force microscopy (AFM). Alternatively the probability distribution may be defined by the histogram of heights measured by AFM. Both methods of treating surface roughness are compared against the classic smooth surface calculation and experimental AFM measurement.

  5. Optical geometry analysis of the electromagnetic self-force

    E-Print Network [OSTI]

    Sebastiano Sonego; Marek A. Abramowicz

    2006-02-17T23:59:59.000Z

    We present an analysis of the behaviour of the electromagnetic self-force for charged particles in a conformally static spacetime, interpreting the results with the help of optical geometry. Some conditions for the vanishing of the local terms in the self-force are derived and discussed.

  6. UW SCHOOL OF PHARMACY EDUCATIONAL INNOVATION TASK FORCE

    E-Print Network [OSTI]

    Sheridan, Jennifer

    UW SCHOOL OF PHARMACY EDUCATIONAL INNOVATION TASK FORCE 2012-2013 Barry Gidal (chair) Ron Burnette of the Task Force and how those activities fulfilled the charges and support the School's mission and strategic priorities. These documents will be posted, as appropriate, on the SOP Committee webpage (http://pharmacy.wisc.edu/about-school

  7. ORIGINAL PAPER Contributions of solar and greenhouse gases forcing

    E-Print Network [OSTI]

    Park, Rokjin

    and West 2006; Lean and Rind 2008; Sch- wartz et al. 2010). There is no doubt that the climate sci- ence radiative flux from Responsible editor: S. Hong. H.-G. Lim School of Environmental Science and Engineering to the surface of Earth (Trenberth et al. 2007). In addition to the GHG forcings, however, radiative forcings due

  8. air force nuclear: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    air force nuclear First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Air Force 2025 by CiteSeer Summary:...

  9. Integrating Tactile and Force Feedback with Finite Element Models

    E-Print Network [OSTI]

    , impedances of robot arms, and the computational model. We also describe an implementation of a compliance rendering system combining a low-impedance robot arm for large workspace kinesthetic force feedback, a high on a low-impedance robot arm, used here as a force feedback device. A real-time FEM model accepts user

  10. Crawling Waves from Radiation Force Excitation ZAEGYOO HAH,1

    E-Print Network [OSTI]

    Parker, Kevin J.

    Crawling Waves from Radiation Force Excitation ZAEGYOO HAH,1 CHRISTOPHER HAZARD,2 YOUNG THUNG CHO1 from focused beams that produce radiation force excitation within the tissue. Some examples are also radiofrequency ablated hepatic lesions in vitro 6,7 to characterize human skeletal muscle in vivo 8, 9

  11. air force materials: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    air force materials First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Air Force Research Laboratory...

  12. ORIGINAL PAPER Attractive forces in microporous carbon electrodes for capacitive

    E-Print Network [OSTI]

    Bazant, Martin Z.

    ORIGINAL PAPER Attractive forces in microporous carbon electrodes for capacitive deionization P. M double layer in microporous carbon electrodes, suitable for incorporation in porous electrode theory and the metallic pore surfaces (image forces) that are not captured by mean-field theories, such as the Poisson

  13. Forcing scheme in pseudopotential lattice Boltzmann model for multiphase flows

    E-Print Network [OSTI]

    Q. Li; K. H. Luo; X. J. Li

    2012-04-18T23:59:59.000Z

    The pseudo-potential lattice Boltzmann (LB) model is a widely used multiphase model in the LB community. In this model, an interaction force, which is usually implemented via a forcing scheme, is employed to mimic the molecular interactions that cause phase segregation. The forcing scheme is therefore expected to play an important role in the pseudo-potential LB model. In this paper, we aim to address some key issues about forcing schemes in the pseudo-potential LB model. Firstly, theoretical and numerical analyses will be made for Shan-Chen's forcing scheme and the exact-difference-method (EDM) forcing scheme. The nature of these two schemes and their recovered macroscopic equations will be shown. Secondly, through a theoretical analysis, we will reveal the physics behind the phenomenon that different forcing schemes exhibit different performances in the pseudo-potential LB model. Moreover, based on the analysis, we will present an improved forcing scheme and numerically demonstrate that the improved scheme can be treated as an alternative approach for achieving thermodynamic consistency in the pseudo-potential LB model.

  14. Formal definition of POTENTIAL ENERGY (valid for conservative forces only)

    E-Print Network [OSTI]

    page - 16 Formal definition of POTENTIAL ENERGY (valid for conservative forces only) Given one type of conservative force F UB - UA= - = - Definition of 'Potential energy difference" conserv #12;page - 17 the definition of the "potential energy difference UB - UA " as equal to negative value of the work W done

  15. ENERGY BASED ICE COLLISION FORCES Claude Daley1

    E-Print Network [OSTI]

    Daley, Claude

    1 ENERGY BASED ICE COLLISION FORCES Claude Daley1 1 Memorial University of Newfoundland, St. John's, Newfoundland, Canada A1C 3X5 ABSTRACT Ice collision forces can be determined by energy considerations. A variety of interaction geometry cases are considered. The indentation energy functions for eight different

  16. ENERGY BASED ICE COLLISION FORCES Claude Daley1

    E-Print Network [OSTI]

    Daley, Claude

    ENERGY BASED ICE COLLISION FORCES Claude Daley1 1 Memorial University of Newfoundland, St. John's, Newfoundland, Canada A1C 3X5 ABSTRACT Ice collision forces can be determined by energy considerations. A variety of interaction geometry cases are considered. The indentation energy functions for eight different

  17. Long range forces between atomic impurities in liquid helium

    E-Print Network [OSTI]

    Long range forces between atomic impurities in liquid helium J. Dupont-Roc Laboratoire Kastler in a polarizable medium. We show that atomic impurities in liquid helium may indeed realize repulsive forces embedded in liquid helium, super uid or not. Solid helium have also been used. Successful theoretical

  18. Biocompatible Force Sensor with Optical Readout and Dimensions of

    E-Print Network [OSTI]

    Straight, Aaron

    Biocompatible Force Sensor with Optical Readout and Dimensions of 6 nm3 Hari Shroff,,§ Bjo1rn M Received June 6, 2005 ABSTRACT We have developed a nanoscopic force sensor with optical readout. The sensor energy transfer. The sensor was calibrated between 0 and 20 pN using a combined magnetic tweezers

  19. Efficiency of Mixing Forced by Unsteady Shear Flow RYUICHIRO INOUE

    E-Print Network [OSTI]

    Smyth, William David

    Efficiency of Mixing Forced by Unsteady Shear Flow RYUICHIRO INOUE Department of Physics form 18 December 2008) ABSTRACT The dependence of mixing efficiency on time-varying forcing is studied frame and allowing the tilt angle to vary in time. Mixing efficiency Gc is defined as the ratio

  20. Extra force in Kaluza-Klein gravity theory

    E-Print Network [OSTI]

    W. B. Belayev

    2007-06-18T23:59:59.000Z

    In induced matter Kaluza-Klein gravity theory the solution of the dynamics equations for the test particle on null path leads to additional force in four-dimensional space-time. We find such force from five-dimensional geodesic line equations and apply this approach to analysis of the asymmetrically warped space-time.

  1. High-temperature piezoresponse force microscopy B. Bhatia,1

    E-Print Network [OSTI]

    King, William P.

    High-temperature piezoresponse force microscopy B. Bhatia,1 J. Karthik,2 D. G. Cahill,1,2 L. W September 2011; published online 24 October 2011) We report high temperature piezoresponse force microscopy resistive heater allows local temperature control up to 1000 C with minimal electrostatic interactions

  2. Modeling Masticatory Muscle Force in Finite Element Analysis

    E-Print Network [OSTI]

    Modeling Masticatory Muscle Force in Finite Element Analysis: Sensitivity Analysis Using Principal: electromyography; muscle force; mastication; primates; principal coordinates analysis; finite element analysis Our Origins, University of Arizona, Tempe, Arizona ABSTRACT Our work on a finite element model of the skull

  3. Techniques for Modeling Muscle-Induced Forces in Finite Element

    E-Print Network [OSTI]

    Dumont, Elizabeth R.

    program was written to interface with a commercial finite element analysis tool to automatically apply: finite element analysis; muscle force; skull; muscle loading alogorithm, biting Finite element analysisTechniques for Modeling Muscle- Induced Forces in Finite Element Models of Skeletal Structures IAN

  4. Fluid forces on two circular cylinders in crossflow

    SciTech Connect (OSTI)

    Jendrzejczyk, J.A.; Chen, S.S.

    1986-01-01T23:59:59.000Z

    Fluid excitation forces are measured in a water loop for two circular cylinders arranged in tandem and normal to flow. The Strouhal number and fluctuating drag and lift coefficients for both cylinders are presented for various spacings and incoming flow conditions. The results show the effects of Reynolds number, pitch ratio, and upstream turbulence on the fluid excitation forces.

  5. Wavenumber Locking And Pattern Formation In Spatially Forced Systems

    SciTech Connect (OSTI)

    Hagberg, Aric [Los Alamos National Laboratory; Meron, Ehud [BEN-GURION UNIV; Manor, Rotem [BEN-GURION UNIV

    2008-01-01T23:59:59.000Z

    We study wavenumber locking and pattern formation resulting from weak spatially periodic one-dimensional forcing of two-dimensional systems. We consider systems that support stationary or traveling stripe patterns in the absence of the forcing, and assume that the one-dimensional forcing is aligned with the direction of the stripe patterns. When the forcing wavenumber is about twice as large as the wavenumber of the unforced system we find that the forcing can either select or stabilize a resonant stripe solution at half the forcing wavenumber, or create a new resonant solution. When the wavenumber mismatch is high we find that the wave-vector component of the pattern in the direction of the forcing can stilI lock at half the forcing wavenumber, but a wave-vector component in the orthogonal direction develops to compensate for the total wavenumber. As a result stationary two-dimensional rectangular and oblique patterns form. When the unforced system supports traveling waves resonant rectangular patterns remain stationary but the oblique patterns travel in a direction orthogonal to the traveling-waves.

  6. Feeling molecular forces: tactile feedback to enhance drug design 

    E-Print Network [OSTI]

    Williams, Jocylin Amber

    2013-02-22T23:59:59.000Z

    that can return force and torque to the user through a hand held stylus. The system configuration for molecular modeling consists of integrating the haptic device with a high-end PC running Windows NT and developing code to model the intermolecular forces...

  7. Academic Science Program Task Force Tuesday, September 13, 2011

    E-Print Network [OSTI]

    Academic Science Program Task Force Tuesday, September 13, 2011 3:00 p.m. Nelson Hall, Room 3220 on the Academic Science Program Task Force to Council of Deans on Thursday, September 22, 2011 · Margery has been, September 28, 2011 in Witherspoon Cinema from 3-4 p.m. and topics will include budget, strategic plan

  8. Spanning the Scales of Granular Materials: Microscopic Force Imaging

    E-Print Network [OSTI]

    Nicolas Brodu; Joshua A. Dijksman; Robert P. Behringer

    2014-08-11T23:59:59.000Z

    If you walk on sand, it supports your weight. How do the disordered forces between particles in sand organize, to keep you from sinking? This simple question is surprisingly difficult to answer experimentally: measuring forces in three dimensions, between deeply buried grains, is challenging. We describe here experiments in which we have succeeded in measuring forces inside a granular packing subject to controlled deformations. We connect the measured micro-scale forces to the macro-scale packing force response with an averaging, mean field calculation. This calculation explains how the combination of packing structure and contact deformations produce the unexpected mechanical response of the packing, and reveals a surprising microscopic particle deformation enhancement mechanism.

  9. Because of the upcoming Jamestown 2007 quadricentennial, the Virginia Heritage Project Task Force Force of the Virtual

    E-Print Network [OSTI]

    Beex, A. A. "Louis"

    #12;Because of the upcoming Jamestown 2007 quadricentennial, the Virginia Heritage Project Task Force Force of the Virtual Library of Virginia (VIVA) asked Colonial National Historical Park-1996, available on the Web. During 2003- 2004, the Virginia Heritage Project Task surveyed manuscript holdings

  10. ForceFit: a code to fit classical force fields to ab-initio potential energy surfaces

    SciTech Connect (OSTI)

    Henson, Neil Jon [Los Alamos National Laboratory; Waldher, Benjamin [WSU; Kuta, Jadwiga [WSU; Clark, Aurora [WSU; Clark, Aurora E [NON LANL

    2009-01-01T23:59:59.000Z

    The ForceFit program package has been developed for fitting classical force field parameters based upon a force matching algorithm to quantum mechanical gradients of configurations that span the potential energy surface of the system. The program, which runs under Unix and is written in C++, is an easy to use, nonproprietary platform that enables gradient fitting of a wide variety of functional force field forms to quantum mechanical information obtained from an array of common electronic structure codes. All aspects of the fitting process are run from a graphical user interface, from the parsing of quantum mechanical data, assembling of a potential energy surface database, setting the force field and variables to be optimized, choosing a molecular mechanics code for comparison to the reference data, and finally, the initiation of a least squares minimization algorithm. Furthermore, the code is based on a modular templated code design that enables the facile addition of new functionality to the program.

  11. A calibration method for lateral forces for use with colloidal probe force microscopy cantilevers

    SciTech Connect (OSTI)

    Quintanilla, M. A. S.; Goddard, D. T. [Nexia Solutions Ltd., Springfields, Salwick, Preston, Lancashire PR4 0XJ (United Kingdom)

    2008-02-15T23:59:59.000Z

    A calibration method is described for colloidal probe cantilevers that enables friction force measurements obtained using lateral force microscopy (LFM) to be quantified. The method is an adaptation of the lever method of Feiler et al. [A. Feiler, P. Attard, and I. Larson, Rev. Sci. Instum. 71, 2746 (2000)] and uses the advantageous positioning of probe particles that are usually offset from the central axis of the cantilever. The main sources of error in the calibration method are assessed, in particular, the potential misalignment of the long axis of the cantilever that ideally should be perpendicular to the photodiode detector. When this is not taken into account, the misalignment is shown to have a significant effect on the cantilever torsional stiffness but not on the lateral photodiode sensitivity. Also, because the friction signal is affected by the topography of the substrate, the method presented is valid only against flat substrates. Two types of particles, 20 {mu}m glass beads and UO{sub 3} agglomerates attached to silicon tapping mode cantilevers were used to test the method against substrates including glass, cleaved mica, and UO{sub 2} single crystals. Comparisons with the lateral compliance method of Cain et al. [R. G. Cain, S. Biggs, and N. W. Page, J. Colloid Interface Sci. 227, 55 (2000)] are also made.

  12. Forcing Adsorption of a Tethered Polymer by Pulling

    E-Print Network [OSTI]

    Judy-anne Osborn; Thomas Prellberg

    2010-07-19T23:59:59.000Z

    We present an analysis of a partially directed walk model of a polymer which at one end is tethered to a sticky surface and at the other end is subjected to a pulling force at fixed angle away from the point of tethering. Using the kernel method, we derive the full generating function for this model in two and three dimensions and obtain the respective phase diagrams. We observe adsorbed and desorbed phases with a thermodynamic phase transition in between. In the absence of a pulling force this model has a second-order thermal desorption transition which merely gets shifted by the presence of a lateral pulling force. On the other hand, if the pulling force contains a non-zero vertical component this transition becomes first-order. Strikingly, we find that if the angle between the pulling force and the surface is beneath a critical value, a sufficiently strong force will induce polymer adsorption, no matter how large the temperature of the system. Our findings are similar in two and three dimensions, an additional feature in three dimensions being the occurrence of a reentrance transition at constant pulling force for small temperature, which has been observed previously for this model in the presence of pure vertical pulling. Interestingly, the reentrance phenomenon vanishes under certain pulling angles, with details depending on how the three-dimensional polymer is modeled.

  13. Flow-Force Compensation in a Hydraulic Valve

    E-Print Network [OSTI]

    Lugowski, Jan

    2015-01-01T23:59:59.000Z

    Flow-reaction forces acting in hydraulic valves have been studied for many decades. Despite this, they are difficult to account for due to the complexities of the jet flow. This paper focuses only on the reduction, also referred to as compensation, of the flow force as applied to a valve spool featuring a profile of a turbine bucket. Fluid power textbooks explain the compensation taking place on such a profile by applying Newton laws of motion to the profile and deliver an equation for the magnitude and the direction of the flow force. This paper shows that both the magnitude and the direction of the compensating flow force are incorrect if calculated from the textbook equation. A corrected analysis of the dynamic forces is presented that are in agreement with earlier experiments by this author. It follows that the compensating flow force should be calculated from the static-pressure imbalance on the spool profile. That is, not Newton but Pascal law should be applied to calculate the compensating flow force.

  14. Non-contact atomic-level interfacial force microscopy

    SciTech Connect (OSTI)

    Houston, J.E.; Fleming, J.G.

    1997-02-01T23:59:59.000Z

    The scanning force microscopies (notably the Atomic Force Microscope--AFM), because of their applicability to nearly all materials, are presently the most widely used of the scanning-probe techniques. However, the AFM uses a deflection sensor to measure sample/probe forces which suffers from an inherent mechanical instability that occurs when the rate of change of the force with respect to the interfacial separation becomes equal to the spring constant of the deflecting member. This instability dramatically limits the breadth of applicability of AFM-type techniques to materials problems. In the course of implementing a DOE sponsored basic research program in interfacial adhesion, a self-balancing force sensor concept has been developed and incorporated into an Interfacial Force Microscopy (IFM) system by Sandia scientists. This sensor eliminates the instability problem and greatly enhances the applicability of the scanning force-probe technique to a broader range of materials and materials parameters. The impact of this Sandia development was recognized in 1993 by a Department of Energy award for potential impact on DOE programs and by an R and D 100 award for one of the most important new products of 1994. However, in its present stage of development, the IFM is strictly a research-level tool and a CRADA was initiated in order to bring this sensor technology into wide-spread availability by making it accessible in the form of a commercial instrument. The present report described the goals, approach and results of this CRADA effort.

  15. Extracting folding landscape characteristics of biomolecules using mechanical forces

    E-Print Network [OSTI]

    Changbong Hyeon; Michael Hinczewski; D. Thirumalai

    2015-01-14T23:59:59.000Z

    In recent years single molecule force spectroscopy has opened a new avenue to provide profiles of the complex energy landscape of biomolecules. In this field, quantitative analyses of the data employing sound theoretical models, have played a major role in interpreting data and anticipating outcomes of experiments. Here, we explain how by using temperature as a variable in mechanical unfolding of biomolecules in force spectroscopy, the roughness of the energy landscape can be measured without making any assumptions about the underlying reaction coordinate. Estimates of other aspects of the energy landscape such as free energy barriers or the transition state (TS) locations could depend on the precise model used to analyze the experimental data. We illustrate the inherent difficulties in obtaining the transition state location from loading rate or force-dependent unfolding rates. Because the transition state moves as the force or the loading rate is varied, which is reminiscent of the Hammond effect, it is in general difficult to invert the experimental data. The independence of the TS location on force holds good only for brittle or hard biomolecules whereas the TS location changes considerably if the molecule is soft or plastic. Finally, we discuss the goodness of the end-to-end distance (or pulling) coordinate of the molecule as a surrogate reaction coordinate in a situation like force-induced ligand-unbinding from a gated molecular receptor as well as force-quench refolding of an RNA hairpin.

  16. Hydrodynamic forces on smooth inclined cylinder in oscillatory flow

    SciTech Connect (OSTI)

    Kang, H.G. [Dalian Univ. of Technology (China)

    1993-12-31T23:59:59.000Z

    The hydrodynamic forces on a smooth inclined circular cylinder exposed to oscillating flow were experimentally investigated at Reynolds number (Re) in the range 40,000--200,000 and Keulegan-Capenter number (Kc) in the interval from 5--40. In the test, Re number and Kc number were varied systematically. The inertia force coefficient (C{sub M}) and the drag force coefficient (C{sub D}) in Morison equation were determined form the measured loads and the water particle kinematics. This analysis uses a modified form of Morison equation since it uses the normal velocity and acceleration. Thus, the applicability of the Cross Flow Principle was assumed. This principle, simply stated, is as follows: the force acting in the direction normal to the axis of a cylinder placed at some oblique angle to the direction of flow is expressed in terms of the normal component of flow only, and the axial component is disregarded. Both total in-line force coefficient (C{sub F}) and transverse force (lift) coefficient (C{sub L}) were analyzed in terms of their maximum and root mean square values. All the in-line and lift force coefficient were given as a functions of Re and Kc number. From this research, it can be seen that the Cross-Flow Principle does not always work well. It seems valid for the total in-line force at high Re and large Kc number; the C{sub M} for {alpha} = 45{degree} is larger and the C{sub D} for {alpha} = 45{degree} is smaller than that for {alpha} = 90{degree} and Re {ge} 80,000. The hydrodynamic force coefficients C{sub D} and C{sub M} for the inclined cylinder are only the functions of oblique angle ({alpha}) and Kc number, but not of the Re number.

  17. Effects of realistic tensor force on nuclear structure

    SciTech Connect (OSTI)

    Nakada, H. [Department of Physics, Graduate School of Science, Chiba University, Inage, Chiba 263-8522 (Japan)

    2012-10-20T23:59:59.000Z

    First-order tensor-force effects on nuclear structure are investigated in the self-consistent mean-field and RPA calculations with the M3Y-type semi-realistic interactions, which contain the realistic tensor force. The tensor force plays a key role in Z- or N-dependence of the shell structure, and in transitions involving spin degrees-of-freedom. It is demonstrated that the semi-realistic interactions successfully describe the N-dependence of the shell structure in the proton-magic nuclei (e.g. Ca and Sn), and the magnetic transitions (e.g. M1 transition in {sup 208}Pb).

  18. Force-velocity relations for multiple molecular motor transportation

    E-Print Network [OSTI]

    Wang, Ziqing

    2009-01-01T23:59:59.000Z

    A transition rate model of cargo transportation by N effective molecular motors is proposed. Under the assumption of steady state, the force-velocity curve of multi-motor system can be derived from the force-velocity curve of single motor. Our work shows, in the case of low load, the velocity of multi-motor system can decrease or increase with increasing motor number, which is dependent on the single motor force-velocity curve. And most commonly, the velocity decreases. This gives a possible explanation to some recent experimental observations.

  19. Force-velocity relations for multiple-molecular-motor transport

    E-Print Network [OSTI]

    Ziqing Wang; Ming Li

    2009-10-01T23:59:59.000Z

    A transition rate model of cargo transport by $N$ molecular motors is proposed. Under the assumption of steady state, the force-velocity curve of multi-motor system can be derived from the force-velocity curve of single motor. Our work shows, in the case of low load, the velocity of multi-motor system can decrease or increase with increasing motor number, which is dependent on the single motor force-velocity curve. And most commonly, the velocity decreases. This gives a possible explanation to some recent

  20. New confining force solution of QCD axion domain wall problem

    E-Print Network [OSTI]

    S. M. Barr; Jihn E. Kim

    2014-11-13T23:59:59.000Z

    The serious cosmological problems created by the axion-string/axion-domain-wall system in standard axion models are alleviated by positing the existence of a new confining force. The instantons of this force can generate an axion potential that erases the axion strings long before QCD effects become important, thus preventing QCD-generated axion walls from ever appearing. Axion walls generated by the new confining force would decay so early as not to contribute significantly to the energy in axion dark matter.

  1. Faddeev equations with three-nucleon force in momentum space

    SciTech Connect (OSTI)

    Stadler, A. (Institut fuer Theoretische Physik, Universitaet Hannover, D-3000 Hannover 1 (Germany)); Gloeckle, W. (Institut fuer Theoretische Physik, Ruhr-Universitaet Bochum, D-4630 Bochum 1 (Germany)); Sauer, P.U. (Institut fuer Theoretische Physik, Universitaet Hannover, D-3000 Hannover 1 (Germany) Department of Physics, FM-15, University of Washington, Seattle, Washington 98195 (United States))

    1991-12-01T23:59:59.000Z

    Modified Faddeev equations that allow the inclusion of irreducible three-body forces in addition to two-body interactions are formulated and the technical apparatus for their solution in momentum space is described. Results for the triton binding energy are obtained with realistic two-nucleon interactions and the Tucson-Melbourne two-pion exchange three-nucleon force and compared with previous calculations. Excellent agreement with the results of other groups is found confirming that the accuracy of present-day techniques for handling three-nucleon forces is very high indeed.

  2. armed forced chief: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Technologies and Information Sciences Websites Summary: muscle produces a torque at a joint that is the product of its contractile force and its moment arm Arm and Estimation of...

  3. Renormalization and power counting of chiral nuclear forces

    SciTech Connect (OSTI)

    Long, Bingwei [JLAB

    2013-08-01T23:59:59.000Z

    I discuss the progress we have made on modifying Weinberg's prescription for chiral nuclear forces, using renormalization group invariance as the guideline. Some of the published results are presented.

  4. Spatio-temporal spectral analysis of a forced cylinder wake

    E-Print Network [OSTI]

    D'Adamo, Juan; Wesfreid, José Eduardo

    2011-01-01T23:59:59.000Z

    The wake of a circular cylinder performing rotary oscillations is studied using hydrodynamic tunnel experiments at $Re=100$. Two-dimensional particle image velocimetry on the mid-plane perpendicular to the axis of cylinder is used to characterize the spatial development of the flow and its stability properties. The lock-in phenomenon that determines the boundaries between regions of the forcing parameter space were the wake is globally unstable or convectively unstable is scrutinized using the experimental data. A novel method based on the analysis of power density spectra of the flow allows us to give a detailed description of the forced wake, shedding light on the energy distribution in the different frequency components and in particular on a cascade-like mechanism evidenced for a high amplitude of the forcing oscillation. In addition, a calculation of the drag from the velocity field is performed, allowing us to relate the resulting force on the body to the wake properties.

  5. EVALUATION OF FORCED CONVECTION NUCLEATE BOILING DETECTION BY ACOUSTIC EMISSION

    E-Print Network [OSTI]

    Wells, R.P.

    2010-01-01T23:59:59.000Z

    of Energy under Contract W-7405-ENG-48 (JJ V'J y \\J7 LEGALunder Contract No. W-7405-ENG-48. References J.A. Paterson,under Contract No. W-7405-ENG-48. Apparatus The forced-

  6. 2014-09-25 Frsvarsmakten Swedish Armed Forces

    E-Print Network [OSTI]

    Zhao, Yuxiao

    : SCADA protection In 2010, The Swedish Armed Forces (SwAF) Defence Staff, Policy Supervisory control and data acquisition (SCADA) systems are used for a number of industrial and critical-infrastructure control applications. SCADA systems can involve

  7. Government and Industry a Force for Collaboration at the Energy...

    Office of Environmental Management (EM)

    and Industry A Force for Collaboration at the Energy Roadmap Update Workshop Sept. 16, 2009 Energy sector leaders in the public and private sectors have once again come together to...

  8. Collective behaviors of the Casimir force in microelectromechanical systems

    SciTech Connect (OSTI)

    Chan, H. B.; Yelton, J.

    2013-01-23T23:59:59.000Z

    Our goal was to explore the strong dependence of the Casimir force on the shape of the interacting bodies. We made significant progress and measured the Casimir force on silicon surface with rectangular corrugation and showed that the results agree with theoretical calculations, provided that the optical properties of silicon are taken into account. Furthermore, we performed measurement of the Casimir force within a single chip for the first time, between a doubly clamped beam and a movable, on-chip electrode at liquid helium temperature. This experiment represents a new way of studying the Casimir effect, a significant advance from the conventional approach of placing an external surface close to a force transducer.

  9. atomic force acoustic: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    systems Peder of Denmark 31 January 2008 12;ii 12;Abstract Within the field of microfluidics and lab-on-a-chip systems 7 3 Mechanical Diode-Based Ultrasonic Atomic Force...

  10. Orbital precession due to central-force perturbations

    E-Print Network [OSTI]

    Gregory S. Adkins; Jordan McDonnell

    2007-02-02T23:59:59.000Z

    We calculate the precession of Keplerian orbits under the influence of arbitrary central-force perturbations. Our result is in the form of a one-dimensional integral that is straightforward to evaluate numerically. We demonstrate the effectiveness of our formula for the case of the Yukawa potential. We obtain analytic results for potentials of the form V(r) = \\alpha r^n and V(r) = \\alpha \\ln(r/\\lambda) in terms of the hypergeometric function {_2F_1} (1/2-n/2,1-n/2; 2; e^2), where e is the eccentricity. Our results reproduce the known general relativistic (n=-3), constant force (n=1), and cosmological constant (n=2) precession formulas. Planetary precessions are often used to constrain the sizes of hypothetical new weak forces--our results allow for more precise, and often stronger, constraints on such proposed new forces.

  11. ARMY, MARINE CORPS, NAVY, AIR FORCE MULTISERVICE TACTICS,

    E-Print Network [OSTI]

    US Army Corps of Engineers

    ARMY, MARINE CORPS, NAVY, AIR FORCE MULTISERVICE TACTICS, TECHNIQUES, AND PROCEDURES Development and Integration T. L. DAVISON THOMAS J. LOFTUS Captain, US Navy Major General, USAF, MC, CFS Acting Assistant Surgeon General Navy Warfare Development Command Health Care Operations Office

  12. Modeling Robot Dynamic Performance for Endpoint Force Control

    E-Print Network [OSTI]

    Eppinger, Steven D.

    1988-09-01T23:59:59.000Z

    This research aims to understand the fundamental dynamic behavior of servo-controlled machinery in response to various types of sensory feedback. As an example of such a system, we study robot force control, a scheme ...

  13. Bonding, antibonding and tunable optical forces in asymmetric membranes

    E-Print Network [OSTI]

    Hui, Pui-Chuen

    We demonstrate that tunable attractive (bonding) and repulsive (anti-bonding) forces can arise in highly asymmetric structures coupled to external radiation, a consequence of the bonding/anti-bonding level repulsion of ...

  14. Robotic Catheter Cardiac Ablation Combining Ultrasound Guidance and Force Control

    E-Print Network [OSTI]

    manipulation speeds while allowing the operator to utilize robotic teleoperation to reduce radiation exposure force control. One medical application that may benefit from this technology is the radiofrequency (RF

  15. US Air Force Fellows and Education with Industry Presentation...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2015 10:00 AM - 11:00 AM Col Michael Richardson, Maj Stephen Pippel, and Capt Kelley Thompson, US Air Force Global Security Directorate Seminar Building 4500-N, Weinberg...

  16. Force Field Parameter Estimation of Functional Perfluoropolyether Lubricants

    SciTech Connect (OSTI)

    Smith, R.; Chung, P.S.; Steckel, J; Jhon, M.S.; Biegler, L.T.

    2011-01-01T23:59:59.000Z

    The head disk interface in a hard disk drive can be considered to be one of the hierarchical multiscale systems, which require the hybridization of multiscale modeling methods with coarse-graining procedure. However, the fundamental force field parameters are required to enable the coarse-graining procedure from atomistic/molecular scale to mesoscale models. In this paper, we investigate beyond molecular level and perform ab initio calculations to obtain the force field parameters. Intramolecular force field parameters for Zdol and Ztetraol were evaluated with truncated PFPE molecules to allow for feasible quantum calculations while still maintaining the characteristic chemical structure of the end groups. Using the harmonic approximation to the bond and angle potentials, the parameters were derived from the Hessian matrix, and the dihedral force constants are fit to the torsional energy profiles generated by a series of constrained molecular geometry optimization.

  17. Modeling and control of undesirable dynamics in atomic force microscopes

    E-Print Network [OSTI]

    El Rifai, Osamah M

    2002-01-01T23:59:59.000Z

    The phenomenal resolution and versatility of the atomic force microscope (AFM), has made it a widely-used instrument in nanotechnology. In this thesis, a detailed model of AFM dynamics has been developed. It includes a new ...

  18. air force base: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Index 1 Energy Savings Performance Contract- Robins Air Force Base, Georgia Texas A&M University - TxSpace Summary: Due to budgetary constraints and lack of funding for energy...

  19. air force bases: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Index 1 Energy Savings Performance Contract- Robins Air Force Base, Georgia Texas A&M University - TxSpace Summary: Due to budgetary constraints and lack of funding for energy...

  20. Dynamics of the Thermohaline Circulation under Wind forcing

    E-Print Network [OSTI]

    Hongjun Gao; Jinqiao Duan

    2001-08-12T23:59:59.000Z

    The ocean thermohaline circulation, also called meridional overturning circulation, is caused by water density contrasts. This circulation has large capacity of carrying heat around the globe and it thus affects the energy budget and further affects the climate. We consider a thermohaline circulation model in the meridional plane under external wind forcing. We show that, when there is no wind forcing, the stream function and the density fluctuation (under appropriate metrics) tend to zero exponentially fast as time goes to infinity. With rapidly oscillating wind forcing, we obtain an averaging principle for the thermohaline circulation model. This averaging principle provides convergence results and comparison estimates between the original thermohaline circulation and the averaged thermohaline circulation, where the wind forcing is replaced by its time average. This establishes the validity for using the averaged thermohaline circulation model for numerical simulations at long time scales.

  1. Bedrock channel response to tetonic, climatic and eustatic forcings

    E-Print Network [OSTI]

    Snyder, Noah P

    2001-01-01T23:59:59.000Z

    The response of bedrock channels to external forcings is investigated in this thesis. The approach is to test and constrain a theoretical model for bedrock-channel incision based on shear stress using field data. The primary ...

  2. On advancement of high speed atomic force microscope technology

    E-Print Network [OSTI]

    SooHoo, Kimberly E

    2008-01-01T23:59:59.000Z

    High speed atomic force microscopy (AFM) is a developing process in which nanoscale objects, such as crystal structures or strands of DNA, can be imaged at rates fast enough to watch processes as they occur. Although current ...

  3. Vacuum fluctuation forces between ultra-thin films

    E-Print Network [OSTI]

    Andrea Benassi; Carlo Calandra

    2008-08-18T23:59:59.000Z

    We have investigated the role of the quantum size effects in the evaluation of the force caused by electromagnetic vacuum fluctuations between ultra-thin films, using the dielectric tensor derived from the particle in a box model. Comparison with the results obtained by adopting a continuum dielectric model shows that, for film thicknesses of 1-10 nm, the electron confinement causes changes in the force intensity with respect to the isotropic plasma model which range from 40% to few percent depending upon the film electron density and the film separation. The calculated force shows quantum size oscillations, which can be significant for film separation distances of several nanometers. The role of electron confinement in reducing the large distance Casimir force is discussed.

  4. On the Correlation between Forcing and Climate Sensitivity

    E-Print Network [OSTI]

    Sokolov, Andrei

    The possible correlation between climate sensitivity and radiative forcing is studied using versions of the NCAR Community Atmospheric Model (CAM) model with different climate sensitivities. No such correlation was found ...

  5. Polymer-mediated entropic forces between scale-free objects

    E-Print Network [OSTI]

    Faghfoor Maghrebi, Mohammad

    The number of configurations of a polymer is reduced in the presence of a barrier or an obstacle. The resulting loss of entropy adds a repulsive component to other forces generated by interaction potentials. When the ...

  6. Forced turbulence in thermally bistable gas: A parameter study

    E-Print Network [OSTI]

    Seifried, D; Niemeyer, J C

    2010-01-01T23:59:59.000Z

    Context: The thermal instability is one of the dynamical agents for turbulence in the diffuse interstellar medium, where both, turbulence and thermal instability interact in a highly non-linear manner. Aims: We study basic properties of turbulence in thermally bistable gas for variable simulation parameters. The resulting cold gas fractions can be applied as parameterisation in simulations on galactic scales. Methods: Turbulent flow is induced on large scales by means of compressive stochastic forcing in a periodic box. The compressible Euler equations with constant UV heating and a parameterised cooling function are solved on uniform grids. We investigate several values of the mean density of the gas and different magnitudes of the forcing. For comparison with other numerical studies, solenoidal forcing is applied as well. Results: After a transient phase, we observe that a state of statistically stationary turbulence is approached. Compressive forcing generally produces a two-phase medium, with a decreasing...

  7. Host nation security force development : a new roadmap

    E-Print Network [OSTI]

    Fitzgerald, Shawn (Shawn Michael)

    2013-01-01T23:59:59.000Z

    A new model concerning the concepts of host nation security force development, or security sector reform (SSR), is proposed. This model is rooted in scholarly literature and seeks to fill current gaps in United States Army ...

  8. air force pilots: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 21 The Air Force Research Laboratory (AFRL) Scholars Program is currently Computer Technologies and Information...

  9. air force pilot: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 21 The Air Force Research Laboratory (AFRL) Scholars Program is currently Computer Technologies and Information...

  10. Design and analysis of a monolithic flexure atomic force microscope

    E-Print Network [OSTI]

    Ljubicic, Dean M

    2008-01-01T23:59:59.000Z

    This thesis details the design, manufacture, and testing of a sub-nanometer accuracy atomic force microscope. It was made to be integrated into the Sub-Atomic Measuring Machine (SAMM) in collaboration with the University ...

  11. Portfolio management in the Air Force : current status and opportunities

    E-Print Network [OSTI]

    Morgan, Dave B

    2011-01-01T23:59:59.000Z

    There are hundreds of weapons programs, under the management of the United States Air Force worth billions of dollars. These programs are being developed to fulfill a need in the U.S. defense strategy. Bringing these weapon ...

  12. ARI Task Force, ECA Work to Stimulate Regional Economies

    Broader source: Energy.gov [DOE]

    WASHINGTON, D.C. – DOE’s Asset Revitalization Initiative (ARI) Task Force met with the Energy Communities Alliance (ECA) this week to advance the Department’s processes for transferring excess land...

  13. Struts, springs and crumple zones: protein structures under force

    E-Print Network [OSTI]

    Dill, Jesse

    2012-01-01T23:59:59.000Z

    energies  indicating   both  that  the  discontinuous  wild-­?energies  reported  from  optical  tweezers  experiments  showed  that   unfolding   of  the  wild-­?energy  of  folding  calculated   when  force  was  applied  at  residues  16  and  61  in  the  wild-­?

  14. Bacteria Total Maximum Daily Load Task Force Final Report 

    E-Print Network [OSTI]

    Jones, C. Allan; Wagner, Kevin; Di Giovanni, George; Hauck, Larry; Mott, Joanna; Rifai, Hanadi; Srinivasan, Raghavan; Ward, George; Wythe, Kathy

    2009-01-01T23:59:59.000Z

    In September 2006, the Texas Commission on Environmental Quality (TCEQ) and Texas State Soil and Water Conservation Board (TSSWCB) charged a seven-person Bacteria Total Maximum Daily Load (TMDL) Task Force with: * examining approaches...

  15. Force Field Parameter Estimation of Functional Perfluoropolyether Lubricants

    SciTech Connect (OSTI)

    Smith, R.; Chung, P.S.; Steckel, J; Jhon, M.S.; Biegler, L.T.

    2011-01-01T23:59:59.000Z

    The head disk interface in hard disk drive can be considered one of the hierarchical multiscale systems, which require the hybridization of multiscale modeling methods with coarse-graining procedure. However, the fundamental force field parameters are required to enable the coarse-graining procedure from atomistic/molecular scale to mesoscale models .In this paper, we investigate beyond molecular level and perform ab-initio calculations to obtain the force field parameters. Intramolecular force field parameters for the Zdol and Ztetraol were evaluated with truncated PFPE molecules to allow for feasible quantum calculations while still maintaining the characteristic chemical structure of the end groups. Using the harmonic approximation to the bond and angle potentials, the parameters were derived from the Hessian matrix, and the dihedral force constants are fit to the torsional energy profiles generated by a series of constrained molecular geometry optimization.

  16. Fast dynamic force computation for electrostatic and electromagnetic conductors 

    E-Print Network [OSTI]

    Koteeswaran, Prabhavathi

    2005-02-17T23:59:59.000Z

    This thesis presents an improved method for dynamic force computation applicable to both electrostatic and electromagnetic conductors with complex 3D geometries. During the transient simulation of electrostatic actuated MEMS, the positions...

  17. Burnout in forced convection nucleate boiling of water

    E-Print Network [OSTI]

    Reynolds John Mitchell

    1957-01-01T23:59:59.000Z

    Data are presented for burnout in forced coivection nucleate boiling of water at pressures above 500 psia. A dimensionless correlation is devised for. the M.I.T. data which is found to be valid for certain recent data ...

  18. Nuclear forces in the parity odd sector and the LS forces

    E-Print Network [OSTI]

    Keiko Murano; for the HALQCD Collaboration

    2011-12-09T23:59:59.000Z

    In this paper, we report our first attempt at determining NN potentials in the parity odd sector including the spin-orbit force in lattice QCD, employing the method to extract successfully parity even NN potentials from Nambu-Bethe-Salpeter (NBS) wave functions through the Schr\\"odinger equation. Using Nf = 2 CP-PACS gauge configurations on a 16^3 x 32 lattice at a = 0.16 fm and m_\\pi \\cong 1.1 GeV, we calculate central, tensor and spin-orbit potentials in the parity odd sector. Although statistical errors are still large, we observe that the qualitative features of these potentials roughly agree with those of phenomenological potentials.

  19. Casimir forces in a Plasma: Possible Connections to Yukawa Potentials

    E-Print Network [OSTI]

    Barry W. Ninham; Mathias Boström; Clas Persson; Iver Brevik; Stefan Y. Buhmann; Bo E. Sernelius

    2014-09-03T23:59:59.000Z

    We present theoretical and numerical results for the screened Casimir effect between perfect metal surfaces in a plasma. We show how the Casimir effect in an electron-positron plasma can provide an important contribution to nuclear interactions. Our results suggest that there is a connection between Casimir forces and nucleon forces mediated by mesons. Correct nuclear energies and meson masses appear to emerge naturally from the screened Casimir-Lifshitz effect.

  20. Ion pump activity generates fluctuating electrostatic forces in biomembranes

    E-Print Network [OSTI]

    B. Loubet; M. A. Lomholt

    2011-09-19T23:59:59.000Z

    We study the non-equilibrium dynamics of lipid membranes with proteins that actively pump ions across the membrane. We find that the activity leads to a fluctuating force distribution due to electrostatic interactions arising from variation in dielectric constant across the membrane. By applying a multipole expansion we find effects on both the tension and bending rigidity dominated parts of the membranes fluctuation spectrum. We discuss how our model compares with previous studies of force-multipole models.

  1. Measurement of three-point hitch forces on agricultural tractors

    E-Print Network [OSTI]

    Bandy, Steven Morris

    1986-01-01T23:59:59.000Z

    dynamometer to be used as an additional tool in monitoring tractor performance. Phases 1, Z, and 3 have been completed and these were described by Green, et al. ( 1985), Morris ( 1984), and Grogan ( 1985), respectively. Phase 4 is the subject.... The upper link was instrumented for axial force measurement. measured forces were resolved into components based on the measured angle of the hitch. A second three-point hitch dynamometer was investigated that used load sensing clevis pins. These pins...

  2. Using Atom Interferometry to Search for New Forces

    SciTech Connect (OSTI)

    Wacker, Jay G.; /SLAC

    2009-12-11T23:59:59.000Z

    Atom interferometry is a rapidly advancing field and this Letter proposes an experiment based on existing technology that can search for new short distance forces. With current technology it is possible to improve the sensitivity by up to a factor of 10{sup 2} and near-future advances will be able to rewrite the limits for forces with ranges from 100 {micro}m to 1km.

  3. Fast dynamic force computation for electrostatic and electromagnetic conductors

    E-Print Network [OSTI]

    Koteeswaran, Prabhavathi

    2005-02-17T23:59:59.000Z

    FAST DYNAMIC FORCE COMPUTATION FOR ELECTROSTATIC AND ELECTROMAGNETIC CONDUCTORS AThesis by PRABHAVATHI KOTEESWARAN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE December 2004 Major Subject: Computer Engineering FAST DYNAMIC FORCE COMPUTATION FOR ELECTROSTATIC AND ELECTROMAGNETIC CONDUCTORS AThesis by PRABHAVATHI KOTEESWARAN Submitted to Texas A&M University in partial fulfillment...

  4. A Nanocrystal Sensor for Luminescence Detection of Cellular Forces

    SciTech Connect (OSTI)

    Choi, Charina; Chou, Jonathan; Lutker, Katie; Werb, Zena; Alivisatos, Paul

    2011-09-29T23:59:59.000Z

    Quantum dots have been used as bright fluorescent tags with high photostability to probe numerous biological systems. In this work we present the tetrapod quantum dot as a dynamic, next-generation nanocrystal probe that fluorescently reports cellular forces with spatial and temporal resolution. Its small size and colloidal state suggest that the tetrapod may be further developed as a tool to measure cellular forces in vivo and with macromolecular spatial resolution.

  5. Dikin-type algorithms for dextrous grasping force optimization

    SciTech Connect (OSTI)

    Buss, M. [Technical Univ. of Munich (Germany). Inst. of Automatic Control Engineering; Faybusovich, L. [Univ. of Notre Dame, IN (United States). Dept. of Mathematics; Moore, J.B. [Australian National Univ., Canberra, Australia Capital Territory (Australia)

    1998-08-01T23:59:59.000Z

    One of the central issues in dextrous robotic hand grasping is to balance external forces acting on the object and at the same time achieve grasp stability and minimum grasping effort. A companion paper shows that the nonlinear friction-force limit constraints on grasping forces are equivalent to the positive definiteness of a certain matrix subject to linear constraints. Further, compensation of the external object force is also a linear constraint on this matrix. Consequently, the task of grasping force optimization can be formulated as a problem with semidefinite constraints. In this paper, two versions of strictly convex cost functions, one of them self-concordant, are considered. These are twice-continuously differentiable functions that tend to infinity at the boundary of possible definiteness. For the general class of such cost functions, Dikin-type algorithms are presented. It is shown that the proposed algorithms guarantee convergence to the unique solution of the semidefinite programming problem associated with dextrous grasping force optimization. Numerical examples demonstrate the simplicity of implementation, the good numerical properties, and the optimality of the approach.

  6. THE OPERATION OF A FORCED TWO PHASE COOLING SYSTEM ON A LARGE SUPERCONDUCTING MAGNET

    E-Print Network [OSTI]

    Green, M.A.

    2010-01-01T23:59:59.000Z

    A FORCED TWO PHASE COOLING SYSTEM ON A LARGE SUPERCONDUCTINGOPERATION O A FORCED T O PHASE COOLING SYSTEM F W O A LARGEof a forced two phase cooling system on a two meter diameter

  7. U.S. - Canada Power System Outage Task Force: Final Report on...

    Broader source: Energy.gov (indexed) [DOE]

    Connecticut and New Jersey, and the Canadian province of Ontario. U.S. - Canada Power System Outage Task Force: Final Report on the Implementation of Task Force...

  8. Reducing the forces required to delimb hardwoods. Forest Service research paper

    SciTech Connect (OSTI)

    Mattson, J.A.; Sturos, J.B.

    1996-01-29T23:59:59.000Z

    Documents the forces required to delimb hardwoods as a function of knife parameters, and identifies opportunities to reduce forces and increase productivity of machines using delimbing knives.

  9. First interim report of the Federal Fleet Conversion Task Force

    SciTech Connect (OSTI)

    Not Available

    1993-08-01T23:59:59.000Z

    The Federal Fleet Conversion Task Force was created by Executive Order 12844, signed by President Clinton on April 21, 1993. In the Order, the President directed that purchases of alternative fueled vehicles by the Federal Government be substantially increased beyond the levels required by current law. The President charged the Task Force with developing recommendations for carrying out the Executive Order, with special emphasis on setting a course that will lead to the widespread use of alternative fueled vehicles by Federal, State, and local government fleets, by private fleets and, ultimately, by individuals. The chief recommendation of the Task Force is the establishment of a Presidential Clean Cities Initiative. To support creation of the Presidential Initiative, the Task Force identified 38 cities and regions, prioritized into three tiers, for concentrating the Initiative`s efforts in Fiscal Years 1994 through 1996. This concentration of effort is key to the effectiveness of the Initiative. The 38 cities and regions would receive priority funding for Federal vehicle purchases and for infrastructure development. In addition, the Task Force has made specific recommendations for overcoming numerous regulatory, economic, and technical barriers that have slowed the introduction of alternative fueled vehicles into general use.

  10. Self-consistent Green's functions with three-body forces

    E-Print Network [OSTI]

    Arianna Carbone

    2014-07-24T23:59:59.000Z

    The present thesis aims at studying the properties of symmetric nuclear and pure neutron matter from a Green's functions point of view, including two-body and three-body chiral forces. An extended self-consistent Green's function formalism is defined to consistently incorporate three-body forces in the many-body calculations. The effect of three-nucleon interactions is included via the construction of a dressed two-body density dependent force. This is obtained performing an average of the leading order three-body terms in the chiral effective field theory expansion. The dressed force corresponds to the use of an in-medium propagator in the average which takes into account the correlations characterizing the system at each stage of the many-body calculation. The total energy of the system is obtained by means of a modified Galitskii-Migdal-Koltun sumrule to correctly account for the effect of three-body forces. Microscopic as well as macroscopic properties of symmetric nuclear and pure neutron matter are analyzed in detailed.

  11. Force-induced rupture of a DNA duplex

    E-Print Network [OSTI]

    Mosayebi, Majid; Doye, Jonathan P K; Ouldridge, Thomas E

    2015-01-01T23:59:59.000Z

    The rupture of double-stranded DNA under stress is a key process in biophysics and nanotechnology. In this article we consider the shear-induced rupture of short DNA duplexes, a system that has been given new importance by recently designed force sensors and nanotechnological devices. We argue that rupture must be understood as an activated process, where the duplex state is metastable and the strands will separate in a finite time that depends on the duplex length and the force applied. Thus, the critical shearing force required to rupture a duplex within a given experiment depends strongly on the time scale of observation. We use simple models of DNA to demonstrate that this approach naturally captures the experimentally observed dependence of the critical force on duplex length for a given observation time. In particular, the critical force is zero for the shortest duplexes, before rising sharply and then plateauing in the long length limit. The prevailing approach, based on identifying when the presence o...

  12. Essays in Labor Economics

    E-Print Network [OSTI]

    Freeman, Donald Eric

    2010-01-01T23:59:59.000Z

    Fredrik, Clair Brown, Benjamin Campbell, Hyowook Chiang, andPress, 1990. Brown, Clair, Benjamin Campbell, Fredrik

  13. Labor Standards for Construction

    Energy Savers [EERE]

    emphasis on high performance sustainable buildings including planning and targets for zero net energy buildings. The new Order requires that 95 percent of all new contract...

  14. Medizingeschichte best. Kantonales Labor

    E-Print Network [OSTI]

    Richner, Heinz

    PHBern PHBern Fachbereichsbibliothek GruppenräumeMac 0 50 #12;TV EG 0 5 10 20 4 2 Fachbereichsbibliothek 1.OG Geologie 2.OG 3 1 Lift Lift LiftLift Lift C 159 Hörraum 24 Plätze Baltzersrasse C 161 Hörraum. 18 h=2. 18h=2. 18 Kappelle Kappelle Medizinische Lehre Anatomie 0 5 10 20 Lift Lift A 301 Hörsaal IML

  15. Essays in Labor Economics

    E-Print Network [OSTI]

    Harker Roa, Arturo

    2012-01-01T23:59:59.000Z

    Economic Journal: Applied Economics, American Eco- nomicQuarterly Journal of Economics, August 1996, 111, 779-804. [Journal of Development Economics, 1996, 50, 297-312. [5

  16. Essays in labor economics

    E-Print Network [OSTI]

    Chou, Tiffany

    2011-01-01T23:59:59.000Z

    Journal of Population Economics , 15(4), 667-682. Akerlof,A. & Rachel E. Kranton. (2000). Economics and Identity.Quarterly Journal of Economics , 115(3), 715-753. Albanesi,

  17. Labor Standards for Construction

    Office of Environmental Management (EM)

    Aspects of Contracting for Construction * 43 - Contract Modifications Department of Energy Acquisition Regulation (DEAR) Parts and Subparts * 906 - Competition Requirements *...

  18. Essays in Labor Economics

    E-Print Network [OSTI]

    Harker Roa, Arturo

    2012-01-01T23:59:59.000Z

    Dummy Cost of Living Index Services Dummy Construction DummyDummy Cost of Living Index Services Dummy Construction DummyDummy Cost of Living Index Services Dummy Construction Dummy

  19. Immigration and Labor Handbook

    E-Print Network [OSTI]

    Palma, Marco; Shingote, Abhishek; Ribera, Luis; Rosson, C. Parr; Falconer, Lawrence; Pena, Jose G.

    2008-11-20T23:59:59.000Z

    ...............................................................................63 B. Civil Rights Act of 1964 .....................................................................63 C. Equal Pay Act of 1963 .......................................................................64 Related Information... .........................................................................64 D. Age Discrimination in Employment Act of 1967 ...............................................64 E. Civil Rights Acts of 1991 ....................................................................65 F. Americans With Disabilities Act...

  20. Essays in labor economics

    E-Print Network [OSTI]

    Michaels, Guy, Ph. D. Massachusetts Institute of Technology

    2006-01-01T23:59:59.000Z

    My dissertation is a collection of three essays that consider various aspects of income inequality and the demand for skill. The first chapter uses the advent of the US Interstate Highway System to examine the effect of ...

  1. Women's Labor History

    E-Print Network [OSTI]

    Helmbold, Lois Rita; Schofield, Ann M.

    1989-12-01T23:59:59.000Z

    Kaplan, "Class Consciousness and Community in 19th Century Andalusia," in Maurice Zeitlin, ed., Political Power and Social Theory, vol. 2 (1982). Carole Turbin attributes the success of militant female laundry workers in Troy, N.Y. to the support...

  2. Essays in labor economics

    E-Print Network [OSTI]

    Chou, Tiffany

    2011-01-01T23:59:59.000Z

    S. Korea Czechoslovakia Chile Malta Portugal Cyprus IrelandTurkey S. Korea Colombia Malta Austria Portugal Colombia S.Turkey Austria Colombia Malta Czechosl Malta Colombia Malta

  3. Marcus Lfverstrm Laboration instructions

    E-Print Network [OSTI]

    Nycander, Jonas

    Rayleigh's equation and Rayleigh's criterion from the quasi-geostrophic potential vorticity equation atmosphere the potential density is a function of both pressure and potential temperature and the geostrophic wind has, in general, a vertical shear. Baro- clinic instability is one of the major players

  4. Labor Standards for Construction

    Broader source: Energy.gov (indexed) [DOE]

    neurotoxins, agents which act on the hematopoietic system, and agents which damage the lungs, skin, eyes, or mucous membranes; o Chemicals which are combustible liquids,...

  5. Labor Standards for Construction

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment ofLetter Report:40PM toLED Lighting5-15Trade |VesselLPOD Name:

  6. Labor Standards for Construction

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment ofLetter Report:40PM toLED Lighting5-15Trade |VesselLPOD Name:

  7. Critical adsorption and critical Casimir forces for geometrically structured confinements

    E-Print Network [OSTI]

    M. Tröndle; L. Harnau; S. Dietrich

    2008-10-31T23:59:59.000Z

    We study the behavior of fluids, confined by geometrically structured substrates, upon approaching a critical point at T = Tc in their bulk phase diagram. As generic substrate structures periodic arrays of wedges and ridges are considered. Based on general renormalization group arguments we calculate, within mean field approximation, the universal scaling functions for order parameter profiles of a fluid close to a single structured substrate and discuss the decay of its spatial variation into the bulk. We compare the excess adsorption at corrugated substrates with the one at planar walls. The confinement of a critical fluid by two walls generates effective critical Casimir forces between them. We calculate corresponding universal scaling functions for the normal critical Casimir force between a flat and a geometrically structured substrate as well as the lateral critical Casimir force between two identically patterned substrates.

  8. Earth's Inner Core dynamics induced by the Lorentz force

    E-Print Network [OSTI]

    Lasbleis, M; Cardin, P; Labrosse, S

    2015-01-01T23:59:59.000Z

    Seismic studies indicate that the Earth's inner core has a complex structure and exhibits a strong elastic anisotropy with a cylindrical symmetry. Among the various models which have been proposed to explain this anisotropy, one class of models considers the effect of the Lorentz force associated with the magnetic field diffused within the inner core. In this paper we extend previous studies and use analytical calculations and numerical simulations to predict the geometry and strength of the flow induced by the poloidal component of the Lorentz force in a neutrally or stably stratified growing inner core, exploring also the effect of different types of boundary conditions at the inner core boundary (ICB). Unlike previous studies, we show that the boundary condition that is most likely to produce a significant deformation and seismic anisotropy is impermeable, with negligible radial flow through the boundary. Exact analytical solutions are found in the case of a negligible effect of buoyancy forces in the inne...

  9. Forced transport of deformable containers through narrow constrictions

    E-Print Network [OSTI]

    Remy Kusters; Thijs van der Heijden; Badr Kaoui; Jens Harting; Cornelis Storm

    2014-11-19T23:59:59.000Z

    We study, numerically and analytically, the forced transport of deformable containers through a narrow constriction. Our central aim is to quantify the competition between the constriction geometry and the active forcing, regulating whether and at which speed a container may pass through the constriction and under what conditions it gets stuck. We focus, in particular, on the interrelation between the force that propels the container and the radius of the channel, as these are the external variables that may be directly controlled in both artificial and physiological settings. We present Lattice-Boltzmann simulations that elucidate in detail the various phases of translocation, and present simplified analytical models that treat two limiting types of these membrane containers: deformational energy dominated by the bending or stretching contribution. In either case we find excellent agreement with the full simulations, and our results reveal that not only the radius but also the length of the constriction determines whether or not the container will pass.

  10. Acceleration of particles in an isotropic random force field

    E-Print Network [OSTI]

    Hector Javier Durand-Manterola

    2012-04-18T23:59:59.000Z

    If we have a particle immersed in a field of random forces, each interaction of the particle with the field can enlarge or diminish its kinetic energy. In this work is shown that in general, for any field of random force with uniform distribution of directions, the probability to gain kinetic energy is larger that the probability to lose it. Therefore, if the particle is submitted to a great number of interactions with the force stochastic field, the final result will be that the particle will gain energy. The probability to gain energy in each interaction is Pg=1/2 (1+T/(2Po)), where T is the impulse given by the field and Po is the momentum of the particle before the interaction. The probability to lose energy in each interaction is Pl=1/2 (1-T/(2Po)).

  11. Determining the role of hydration forces in protein folding

    SciTech Connect (OSTI)

    Sorenson, J.M. [Univ. of California, Berkeley, CA (United States). Dept. of Chemistry] [Univ. of California, Berkeley, CA (United States). Dept. of Chemistry; Hura, G. [Univ. of California, Berkeley, CA (United States)] [Univ. of California, Berkeley, CA (United States); [Lawrence Berkeley National Lab., CA (United States). Life Sciences Div.; Soper, A.K. [Rutherford Appleton Lab., Didcot (United Kingdom). ISIS Facility] [Rutherford Appleton Lab., Didcot (United Kingdom). ISIS Facility; Pertsemlidis, A. [Univ. of Texas Southwestern Medical Center, Dallas, TX (United States). Dept. of Biochemistry] [Univ. of Texas Southwestern Medical Center, Dallas, TX (United States). Dept. of Biochemistry; Head-Gordon, T. [Lawrence Berkeley National Lab., CA (United States)] [Lawrence Berkeley National Lab., CA (United States)

    1999-07-01T23:59:59.000Z

    One of the primary issues in protein folding is determining what forces drive folding and eventually stabilize the native state. A delicate balance exists between electrostatic forces such as hydrogen bonding and salt bridges, and the hydrophobic effect, which are present for both intramolecular protein interactions and intermolecular contributions with the surrounding aqueous environment. This article describes a combined experimental, theoretical, and computational effort to show how the complexity of aqueous hydration can influence the structure, folding and aggregation, and stability of model protein systems. The unification of the theoretical and experimental work is the development or discovery of effective amino acid interactions that implicitly include the effects of aqueous solvent. The authors show that consideration of the full range of complexity of aqueous hydration forces such as many-body effects, long-ranged character of aqueous solvation, and the assumptions made about the degree of protein hydrophobicity can directly impact the observed structure, folding, and stability of model protein systems.

  12. Unitary approach to the quantum forced harmonic oscillator

    E-Print Network [OSTI]

    D. Velasco-Martinez; V. G. Ibarra-Sierra; J. C. Sandoval-Santana; J. L. Cardoso; A. Kunold

    2014-08-31T23:59:59.000Z

    In this paper we introduce an alternative approach to studying the evolution of a quantum harmonic oscillator subject to an arbitrary time dependent force. With the purpose of finding the evolution operator, certain unitary transformations are applied successively to Schr\\"odinger's equation reducing it to its simplest form. Therefore, instead of solving the original Schr\\"odinger's partial differential equation in time and space the problem is replaced by a system of ordinary differential equations. From the obtained evolution operator we workout the propagator. Even though we illustrate the use of unitary transformations on the solution of a forced harmonic oscillator, the method presented here might be used to solve more complex systems. The present work addresses many aspects regarding unitary transformations and the dynamics of a forced quantum harmonic oscillator that should be useful for students and tutors of the quantum mechanics courses at the senior undergraduate and graduate level.

  13. Noninvasive determination of optical lever sensitivity in atomic force microscopy

    SciTech Connect (OSTI)

    Higgins, M.J.; Proksch, R.; Sader, J.E.; Polcik, M.; Mc Endoo, S.; Cleveland, J.P.; Jarvis, S.P. [Centre for Research on Adaptive Nanodevices and Nanostructures (CRANN), University of Dublin, Trinity College, Dublin 2 (Ireland); Asylum Research, 6310 Hollister Ave, Santa Barbara, California 93117 (United States); Department of Mathematics and Statistics, University of Melbourne Victoria, 3010 (Australia); Centre for Research on Adaptive Nanodevices and Nanostructures (CRANN), University of Dublin, Trinity College, Dublin 2 (Ireland); Asylum Research, 6310 Hollister Ave, Santa Barbara, California 93117 (United States); Centre for Research on Adaptive Nanodevices and Nanostructures (CRANN), University of Dublin, Trinity College, Dublin 2 (Ireland)

    2006-01-15T23:59:59.000Z

    Atomic force microscopes typically require knowledge of the cantilever spring constant and optical lever sensitivity in order to accurately determine the force from the cantilever deflection. In this study, we investigate a technique to calibrate the optical lever sensitivity of rectangular cantilevers that does not require contact to be made with a surface. This noncontact approach utilizes the method of Sader et al. [Rev. Sci. Instrum. 70, 3967 (1999)] to calibrate the spring constant of the cantilever in combination with the equipartition theorem [J. L. Hutter and J. Bechhoefer, Rev. Sci. Instrum. 64, 1868 (1993)] to determine the optical lever sensitivity. A comparison is presented between sensitivity values obtained from conventional static mode force curves and those derived using this noncontact approach for a range of different cantilevers in air and liquid. These measurements indicate that the method offers a quick, alternative approach for the calibration of the optical lever sensitivity.

  14. The impact of structural dynamics on job mobility rates in the United States

    E-Print Network [OSTI]

    Shin, Taek-Jin

    2007-01-01T23:59:59.000Z

    economy during this period, including technological innovations, the changing composition of the labor force, globalization,

  15. Spin contribution to the ponderomotive force in a plasma

    E-Print Network [OSTI]

    G. Brodin; A. P. Misra; M. Marklund

    2010-07-30T23:59:59.000Z

    The concept of a ponderomotive force due to the intrinsic spin of electrons is developed. An expression containing both the classical as well as the spin-induced ponderomotive force is derived. The results are used to demonstrate that an electromagnetic pulse can induce a spin-polarized plasma. Furthermore, it is shown that for certain parameters, the nonlinear back-reaction on the electromagnetic pulse from the spin magnetization current can be larger than that from the classical free current. Suitable parameter values for a direct test of this effect are presented.

  16. SRS reactor control rod cooling without normal forced convection cooling

    SciTech Connect (OSTI)

    Smith, D.C. (SAIC, Albuquerque, NM (United States)); Easterling, T.C. (Westinghouse Savannah River Co., Aiken, SC (United States))

    1993-01-01T23:59:59.000Z

    This paper describes an analytical study of the coolability of the control rods in the Savannah River site (SRS) K production reactor under conditions of loss of normal forced convection cooling. The study was performed as part of the overall safety analysis of the reactor supporting its restart. The analysis addresses the buoyancy-driven boiling flow over the control rods that occurs when forced cooling is lost. The objective of the study was to demonstrate that the control rods will remain cooled (i.e., no melting) at powers representative of those anticipated for restart of the reactor.

  17. The mechano-chemistry of cytoskeletal force generation

    E-Print Network [OSTI]

    Mirko Maraldi; Krishna Garikipati

    2014-04-23T23:59:59.000Z

    In this communication, we propose a model to study the non-equilibrium process by which actin stress fibers develop force in contractile cells. The emphasis here is on the non-equilibrium thermodynamics, which is necessary to address the mechanics as well as the chemistry of dynamic cell contractility. In this setting we are able to develop a framework that relates (a) the dynamics of force generation within the cell and (b) the cell response to external stimuli to the chemical processes occurring within the cell, as well as to the mechanics of linkage between the stress fibers, focal adhesions and extra-cellular matrix.

  18. A channel Brownian pump powered by an unbiased external force

    E-Print Network [OSTI]

    Bao-quan Ai; Liang-gang Liu

    2010-03-22T23:59:59.000Z

    A Brownian pump of particles in an asymmetric finite tube is investigated in the presence of an unbiased external force. The pumping system is bounded by two particle reservoirs. It is found that the particles can be pumped through the tube from a reservoir at low concentration to one at the same or higher concentration. There exists an optimized value of temperature (or the amplitude of the external force) at which the pumping capacity takes its maximum value. The pumping capacity decreases with increasing the radius at the bottleneck of the tube.

  19. Spatial synchronization and extinction of species under external forcing

    E-Print Network [OSTI]

    R. E. Amritkar; Govindan Rangarajan

    2006-02-20T23:59:59.000Z

    We study the interplay between synchronization and extinction of a species. Using a general model we show that under a common external forcing, the species with a quadratic saturation term in the population dynamics first undergoes spatial synchronization and then extinction, thereby avoiding the rescue effect. This is because the saturation term reduces the synchronization time scale but not the extinction time scale. The effect can be observed even when the external forcing acts only on some locations provided there is a synchronizing term in the dynamics. Absence of the quadratic saturation term can help the species to avoid extinction.

  20. On transition from Alfvén resonance to forced magnetic reconnection

    SciTech Connect (OSTI)

    Luan, Q. [MOE Key Lab of Materials Modification by Beams and School of Physics and Optoelectrical Technology, Dalian University of Technology, Dalian 116024 (China); Wang, X., E-mail: xgwang@hit.edu.cn [Department of Physics, Harbin Institute of Technology, Harbin 150001 (China)

    2014-07-15T23:59:59.000Z

    We revisit the transition from Alfvén resonance to forced magnetic reconnection with a focus on the property of their singularities. As the driven frequency tends to zero, the logarithmic singularity of Alfvén resonance shifts to the power-law singularity of forced reconnection, due to merging of the two resonance layers. The transition criterion depends on either kinetic effects or dissipations that resolve the singularity. As an example, a small but finite resistivity ? is introduced to investigate the transition process. The transition threshold is then obtained as the driven frequency reaches a level of ?O((?/k){sup 1/3})