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Sample records for income gdp population

  1. The economics of housing lower income populations in South Africa : challenges and opportunities in KwaZulu-Natal

    E-Print Network [OSTI]

    Barriére, Marcella M

    2013-01-01

    Since 1994, approximately three million homes have been built for lower income households in South Africa, but as a result of population growth, immigration, increasing urbanization and systemic inefficiencies, such as ...

  2. Why is GDP growth linear?

    E-Print Network [OSTI]

    Becker, Jörg D

    2015-01-01

    In many European countries the growth of the real GDP per capita has been linear since 1950. An explanation for this linearity is still missing. We propose that in artificial intelligence we may find models for a linear growth of performance. We also discuss possible consequences of the fact that in systems with linear growth the percentage growth goes to zero.

  3. New Contract Helps Portsmouth GDP Cleanup

    Broader source: Energy.gov [DOE]

    To accelerate the Portsmouth GDP cleanup efforts left over from the Cold War, the Department of Energy made a huge step forward in our nuclear environmental cleanup efforts.

  4. Linking Economic Complexity, Institutions and Income Inequality

    E-Print Network [OSTI]

    Hartmann, D; Jara-Figueroa, C; Aristarán, M; Hidalgo, C A

    2015-01-01

    The mix of products that a country exports predicts that country's subsequent pattern of diversification and economic growth. But does this product mix also predict income inequality? Here we combine methods from econometrics, network science, and economic complexity to show that countries that export complex products - products that are exported by a few diversified countries - have lower levels of income inequality - at comparable levels of GDP per capita and education - than countries exporting simpler products. Using multivariate analysis we show that the connection between income inequality and economic complexity is stronger than what can be explained using aggregate measures of income, institutions, export concentration, and human capital, and also, that increases in economic complexity are accompanied by decreases in income inequality over long periods of time. Finally, we use the position of a country in the network of related products - or product space - to explain how changes in a country's export...

  5. EO 12898: Environmental Justice in Minority Populations and Low...

    Energy Savers [EERE]

    2898: Environmental Justice in Minority Populations and Low-Income Populations EO 12898: Environmental Justice in Minority Populations and Low-Income Populations To focus Federal...

  6. Beyond GDP: Measuring and achieving global genuine progress Ida Kubiszewski a,

    E-Print Network [OSTI]

    Vermont, University of

    's overall performance (Kuznets, 1934; Marcuss and Kane, 2007; McCulla and Smith, 2007). GDP's current role

  7. The scaling of income inequality in cities

    E-Print Network [OSTI]

    Sarkar, Somwrita; Simpson, Roderick; Wasnik, Sachin

    2015-01-01

    Developing a scientific understanding of cities in a fast urbanizing world is essential for planning sustainable urban systems. Recently, it was shown that income and wealth creation follow increasing returns, scaling superlinearly with city size. We study scaling of per capita incomes for separate census defined income categories against population size for the whole of Australia. Across several urban area definitions, we find that lowest incomes grow just linearly or sublinearly ($\\beta = 0.94$ to $1.00$), whereas highest incomes grow superlinearly ($\\beta = 1.00$ to $1.21$), with total income just superlinear ($\\beta = 1.03$ to $1.05$). These findings support the earlier finding: the bigger the city, the richer the city. But, we also see an emergent metric of inequality: the larger the population size and densities of a city, higher incomes grow more quickly than lower, suggesting a disproportionate agglomeration of incomes in the highest income categories in big cities. Because there are many more people ...

  8. Global Drifter Program (GDP) Drifting buoy measurements of Sea Surface Temperature,

    E-Print Network [OSTI]

    Global Drifter Program (GDP) Drifting buoy measurements of Sea Surface Temperature, Mixed Layer Currents, Atmospheric Pressure and Winds http://www.aoml.noaa.gov/phod/dac/gdp.html 26th Data Buoy: the principal component of the Global Surface Drifting Buoy Array, a branch of NOAA's Global Ocean Observing

  9. The effects of energy policies in China on energy consumption and GDP1

    E-Print Network [OSTI]

    Lin, C.-Y. Cynthia

    policies have significant impacts on diesel oil, gasoline and natural gas consumption. However, some energy The effects of energy policies in China on energy consumption and GDP1 Ming-Jie Lu, C.-Y. Cynthia policies; energy consumption; GDP; China JEL codes: Q48, Q41, Q58

  10. Crystal structure of a tetrameric GDP-D-mannose 4,6-dehydratase from a bacterial GDP-D-rhamnose biosynthetic pathway

    SciTech Connect (OSTI)

    Webb, N.A.; Mulichak, A.M.; Lam, J.S.; Rocchetta, H.L.; Garavito, R.M. (MSU); (Guelph); (PG)

    2010-03-08

    D-Rhamnose is a rare 6-deoxy monosaccharide primarily found in the lipopolysaccharide of pathogenic bacteria, where it is involved in host-bacterium interactions and the establishment of infection. The biosynthesis of D-rhamnose proceeds through the conversion of GDP-D-mannose by GDP-D-mannose 4,6-dehydratase (GMD) to GDP-4-keto-6-deoxymannose, which is subsequently reduced to GDP-D-rhamnose by a reductase. We have determined the crystal structure of GMD from Pseudomonas aeruginosa in complex with NADPH and GDP. GMD belongs to the NDP-sugar modifying subfamily of the short-chain dehydrogenase/reductase (SDR) enzymes, all of which exhibit bidomain structures and a conserved catalytic triad (Tyr-XXX-Lys and Ser/Thr). Although most members of this enzyme subfamily display homodimeric structures, this bacterial GMD forms a tetramer in the same fashion as the plant MUR1 from Arabidopsis thaliana. The cofactor binding sites are adjoined across the tetramer interface, which brings the adenosyl phosphate moieties of the adjacent NADPH molecules to within 7 {angstrom} of each other. A short peptide segment (Arg35-Arg43) stretches into the neighboring monomer, making not only protein-protein interactions but also hydrogen bonding interactions with the neighboring cofactor. The interface hydrogen bonds made by the Arg35-Arg43 segment are generally conserved in GMD and MUR1, and the interacting residues are highly conserved among the sequences of bacterial and eukaryotic GMDs. Outside of the Arg35-Arg43 segment, residues involved in tetrameric contacts are also quite conserved across different species. These observations suggest that a tetramer is the preferred, and perhaps functionally relevant, oligomeric state for most bacterial and eukaryotic GMDs.

  11. Income Protection (IP) Insurance 

    E-Print Network [OSTI]

    Stokes, Kenneth; Barnaby, G. A. Art; Waller, Mark L.; Outlaw, Joe

    1999-06-09

    Kenneth Stokes, G.A. ?Art? Barnaby, Mark Waller and Joe Outlaw* The Income Protection (IP) program insures the producer against lost income from reductions in yield or price. This policy pays when the harvested and appraised production to count, multiplied...

  12. Farm Income Taxation 

    E-Print Network [OSTI]

    McEowen, Roger A.

    1999-06-23

    and claim deductions when payments are made. Conversely, taxpayers on the accrual method report income when it is earned and report expenses when incurred rather than when paid. The constructive receipt doctrine. Cash basis taxpayers must take income... or constructively received. In effect, insurance proceeds received as a result of crop destruction or damage are treated as a ?sale? of the crop. Weather-related sales of livestock. If a farmer sells livestock (other than poultry) held for draft, dairy or breeding...

  13. The Leishmania GDP-Mannose Transporter Is an Autonomous, Multi-specific, Hexameric Complex of LPG2 Subunits

    E-Print Network [OSTI]

    Beverley, Stephen M.

    The Leishmania GDP-Mannose Transporter Is an Autonomous, Multi-specific, Hexameric Complex of LPG2Vised Manuscript ReceiVed NoVember 29, 1999 ABSTRACT: LPG2 (a gene involved in lipophosphoglycan assembly) encodes lack a GDP-Man NST, thereby providing an ideal heterologous system for probing the LPG2 structure

  14. An alternative approach for low income housing in Algeria : housing cooperative

    E-Print Network [OSTI]

    Khellaf, Assia

    1983-01-01

    The population which suffers most directly from deficit in housing, in developing countries are the low income populations. Why has the problem been allowed to develop, and why have solutions been not forthcoming? There ...

  15. BENTON PUD LOW INCOME CONSERVATION PROGRAM

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

    result in a preference being given to households with incomes below 125% of Federal Poverty Guidelines (FPG) Upper low income households with incomes between 125 and 200%...

  16. Detailed Income Statement Descriptions

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submit theCovalent BondingMeeting |Design CompetitionsFuelof 12 Detailed Income

  17. Californians' Beliefs About Income Inequality

    E-Print Network [OSTI]

    Ahler, Douglas J; Kelly, Beckett; Lenz, Gabriel; Rarick, Ethan; Stoker, Laura

    2015-01-01

    and potential remedies for inequality. On some issues,California’s Rising Income Inequality: Causes and Concerns,Bruce. Debate over Inequality Highlights Sharp Partisan

  18. Violation of Invariance of Measurement for GDP Growth Rate and its Consequences

    E-Print Network [OSTI]

    Hosseiny, Ali

    2015-01-01

    The aim here is to address the origins of sustainability for the real growth rate in the United States. For over a century of observations on the real GDP per capita of the United States a sustainable two percent growth rate has been observed. To find an explanation for this observation I consider the impact of utility preferences and the effect of mobility of labor \\& capital on every provided measurement. Mobility of labor results in heterogenous rates of increase in prices which is called Baumol's cost disease phenomenon. Heterogeneous rates of inflation then make it impossible to define an invariant measure for the real growth rate. Paradoxical and ambiguous results already have been observed when different measurements provided by the World Bank have been compared with the ones from the central banks. Such ambiguity is currently being discussed in economy. I define a toy model for caring out measurements in order to state that this ambiguity can be very significant. I provide examples in which GDP ex...

  19. WPN 13-3: 2013 Poverty Income Guidelines and Definition of Income

    Broader source: Energy.gov [DOE]

    To provide states with the 2013 Poverty Income Guidelines and Definition of Income for use in the low-income Weatherization Assistance Program (WAP).

  20. Hope, Humor and Quality of Life in a Low Income Sample

    E-Print Network [OSTI]

    Ronan, Kathryn

    2009-04-23

    to meet goals will consequently be plagued by negative emotions or vice versa. The following study will assess hope as defined by hope theory: hope is a thought process that results in emotions. Hope theory portends that hopeful individuals are problem... higher income populations (Bassuk, et al., 1998; Everson et al., 2002; Weich & Lewis, 1998). A ? 4? ? recent study of 436 low income women with children compared the rates of PTSD, major depression, and substance abuse among the low income women to a...

  1. The impact of economic, political and social globalization on overweight and obesity in the 56 low and middle income countries

    E-Print Network [OSTI]

    Goryakin, Yevgeniy; Lobstein, Tim; James, W. Philip T.; Suhrcke, Marc

    2015-03-14

    cost of calorie intake, as well as to the higher opportunity cost of expending calories, resulting in the higher probability of obesity/ overweight (TJ Philipson and Posner, 2003a). In the case of glob- alization, the nutritional transition may also... transfers (percent of GDP); international tourism foreign population (in percent of total population); international letters (per capita); internet users (per 1000 people); TVs (per 1000 people); trade inand Popkin, 1997, 1999; Popkin and Gordon-Larsen, 2004...

  2. Golgi GDP-mannose Uptake Requires Leishmania LPG2 A MEMBER OF A EUKARYOTIC FAMILY OF PUTATIVE NUCLEOTIDE-SUGAR TRANSPORTERS*

    E-Print Network [OSTI]

    Beverley, Stephen M.

    Golgi GDP-mannose Uptake Requires Leishmania LPG2 A MEMBER OF A EUKARYOTIC FAMILY OF PUTATIVE as a donor substrate for lipophosphoglycan (LPG) synthesis. A lpg2 deletion mutant showed loss of GDP- Man but not UDP-Gal uptake, which was restored by introduction of the gene LPG2. Immunoelectron micros- copy

  3. Low-Income Weatherization: The Human Dimension

    Broader source: Energy.gov [DOE]

    This presentation focuses on how the human dimension saves energy within low-income weatherization programs.

  4. Delivering Energy Efficiency to Middle Income Single Family Households

    E-Print Network [OSTI]

    Zimring, Mark

    2012-01-01

    income range, households can become passive very quickly. ”income range, households can become passive very quickly. ”

  5. Structure of the protein core of translation initiation factor 2 in apo, GTP-bound and GDP-bound forms

    SciTech Connect (OSTI)

    Simonetti, Angelita; Fabbretti, Attilio; Hazemann, Isabelle; Jenner, Lasse; Gualerzi, Claudio O.; Klaholz, Bruno P.

    2013-06-01

    The crystal structures of the eubacterial translation initiation factor 2 in apo form and with bound GDP and GTP reveal conformational changes upon nucleotide binding and hydrolysis, notably of the catalytically important histidine in the switch II region. Translation initiation factor 2 (IF2) is involved in the early steps of bacterial protein synthesis. It promotes the stabilization of the initiator tRNA on the 30S initiation complex (IC) and triggers GTP hydrolysis upon ribosomal subunit joining. While the structure of an archaeal homologue (a/eIF5B) is known, there are significant sequence and functional differences in eubacterial IF2, while the trimeric eukaryotic IF2 is completely unrelated. Here, the crystal structure of the apo IF2 protein core from Thermus thermophilus has been determined by MAD phasing and the structures of GTP and GDP complexes were also obtained. The IF2–GTP complex was trapped by soaking with GTP in the cryoprotectant. The structures revealed conformational changes of the protein upon nucleotide binding, in particular in the P-loop region, which extend to the functionally relevant switch II region. The latter carries a catalytically important and conserved histidine residue which is observed in different conformations in the GTP and GDP complexes. Overall, this work provides the first crystal structure of a eubacterial IF2 and suggests that activation of GTP hydrolysis may occur by a conformational repositioning of the histidine residue.

  6. Low-Income Californians Bear Unequal Burden of Asthma

    E-Print Network [OSTI]

    Babey, Susan H.; Hastert, Theresa A.; Meng, Ying-Ying; Brown, E. Richard

    2007-01-01

    Research Brief February 2007 Low-Income Californians Bearbelow the poverty level. 1 Low-income adults and childrenasthma exacerbations. Low-Income Families Disproportionately

  7. The IGS Survey: Californians' Beliefs about Income Inequality

    E-Print Network [OSTI]

    Ahler, Douglas J; Kelly, Beckett; Lenz, Gabriel; Rarick, Ethan; Stoker, Laura

    2015-01-01

    August 2015 Californians’ Beliefs about Income InequalityMobility and Income Inequality in California. San Francisco:California’s Rising Income Inequality: Causes and Concerns,

  8. Geography, Income, and Voters Explanations and Implications

    E-Print Network [OSTI]

    Gelman, Andrew

    1/54 Geography, Income, and Voters Explanations and Implications Election 2008: What Really State, Blue State, Rich State, Poor State #12;2/54 Geography, Income, and Voters Explanations, Poor State #12;3/54 Geography, Income, and Voters Explanations and Implications Election 2008: What

  9. Three: Should California Adopt an Earned Income Tax Credit?

    E-Print Network [OSTI]

    Stark, Kirk J

    2006-01-01

    program designed to maximize the earned income of persons inIncome after Subsidy An alternative approach designed to maximize

  10. Current trends in income statements 

    E-Print Network [OSTI]

    Cass, Edwin Childers

    1948-01-01

    years 2 000 000 sy&i~9 Earnings of' prior years transferred to capital stock account. ' 99 dr 124, 4452088 Accumulated. earnings invested in plant facilitlss and added to zorking oaptta1 at ead od' year . ~189 4'14 919 An example of' the second...~the ?clams surplus theory, ?2 . ?& the ?all-inclusive income statement", , = or ths. "historical approach" ~ . And those who favor tbs second belief' are said to accept ths ?eiarning* power approach", oz the "current opera- ?, 5 ting perf'ozmance concept...

  11. Incomes of Migratory Agricultural Workers. 

    E-Print Network [OSTI]

    Sargent, Frederic O.; Metzler, William H.

    1960-01-01

    the fact that half of them, mainly women and childre-n, were out of the labor market complete- ly at the home base. During 1956, the average earnings per worker were $781, but male heads of households averaged earnings per family... varied closely with the size of the family work force and averaged $2,208. Less than one-fourth of this was earned at the home base; hence, migratory labor was a major source of their income. In the 446 households surveyed, there was a total of 1...

  12. WPN 12-8: 2012 Poverty Income Guidelines and Definition of Income

    Office of Energy Efficiency and Renewable Energy (EERE)

    To provide Grantees with the 2012 Poverty Income Guidelines and Definition of Income for use in the U.S. Department of Energy’s (DOE) Weatherization Assistance Program (WAP).

  13. The Structure of the MUR1 GDP-mannose 4,67-deydratase from A. thaliana: Implications for Ligand Binding Specificity

    SciTech Connect (OSTI)

    Mulichak, A.M.; Bonin, C.P.; Reiter, W.-D.; Garavito, R.M. (Michigan State University)

    2010-03-08

    GDP-D-mannose 4,6-dehydratase catalyzes the first step in the de novo synthesis of GDP-L-fucose, the activated form of L-fucose, which is a component of glycoconjugates in plants known to be important to the development and strength of stem tissues. We have determined the three-dimensional structure of the MUR1 dehydratase isoform from Arabidopsis thaliana complexed with its NADPH cofactor as well as with the ligands GDP and GDP-D-rhamnose. MUR1 is a member of the nucleoside-diphosphosugar modifying subclass of the short-chain dehydrogenase/reductase enzyme family, having homologous structures and a conserved catalytic triad of Lys, Tyr, and Ser/Thr residues. MUR1 is the first member of this subfamily to be observed as a tetramer, the interface of which reveals a close and intimate overlap of neighboring NADP{sup +}-binding sites. The GDP moiety of the substrate also binds in an unusual syn conformation. The protein-ligand interactions around the hexose moiety of the substrate support the importance of the conserved triad residues and an additional Glu side chain serving as a general base for catalysis. Phe and Arg side chains close to the hexose ring may serve to confer substrate specificity at the O2 position. In the MUR1/GDP-D-rhamnose complex, a single unique monomer within the protein tetramer that has an unoccupied substrate site highlights the conformational changes that accompany substrate binding and may suggest the existence of negative cooperativity in MUR1 function.

  14. Fixed Income Division Nomura International plc

    E-Print Network [OSTI]

    Macrina, Andrea

    Fixed Income Division © Nomura International plc Symmetry methods for quadratic Gaussian models International plc Outline Motivation The quadratic Gaussian distribution The quadratic Gaussian process The quadratic Gaussian model #12;Fixed Income Division 3© Nomura International plc Part 1 Motivation #12;Fixed

  15. INCOME INEQUALITY IN FORMER CENTRALLY PLANNED ECONOMIES

    E-Print Network [OSTI]

    Bateman, Ian J.

    transforms into a successful market economy, increased income inequalities may be desirable' (Doyle, 1996, p and the opportunities for non-agricultural income from the market liberalisation process would seem to be important adjustment to market in transition economies. As Doyle (1996) has stated for example: `to ensure that Russia

  16. Top Incomes in the Long Run of History

    E-Print Network [OSTI]

    Atkinson, Anthony B.; Piketty, Thomas; Saez, Emmanuel

    2012-01-01

    A. B. and T. Piketty eds. Top Incomes over the TwentiethPress. Atkinson, Anthony B. (2010) “Top incomes in a rapidlyA. B. and T. Piketty eds. Top Incomes over the Twentieth

  17. Loan Programs for Low- and Moderate-Income Households | Department...

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

    Multifamily and Low-Income Housing Peer Exchange Call Series: Loan Programs for Low- and Moderate-Income Households, March 13, 2014. Call Slides and Discussion Summary More...

  18. Revisiting the Income Effect: Gasoline Prices and Grocery Purchases

    E-Print Network [OSTI]

    Gicheva, Dora; Hastings, Justine; Villas-Boas, Sofia B

    2008-01-01

    Mortgage or Rent Gasoline and Motor Oil Income after taxesMortgage or Rent Gasoline and Motor Oil Income after taxes

  19. Proposed Structure and Organizing Principles for Low Income Energy...

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

    Structure and Organizing Principles for Low Income Energy Efficiency Workgroup 1 Background As part of Post-2011-Review, BPA agreed to convene a low income energy efficiency...

  20. Structure and Organizing Principles for Low Income Energy Efficiency

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

    Organizing Principles for Low Income Energy Efficiency Workgroup 1 Background As part of Post-2011-Review, BPA agreed to convene a low income energy efficiency workgroup. The...

  1. The State and income inequality in Brazil

    E-Print Network [OSTI]

    Medeiros, Marcelo; Souza, Pedro H.G.F.

    2013-01-01

    Cash Transfers in Brazil, Chile and Mexico: Impacts uponand income inequality in Brazil Journal. 1986;96(383):722–the inequality levels in Brazil would be much higher than

  2. Handbook for Incoming Law Exchange Students

    E-Print Network [OSTI]

    Gasch, Audrey P.

    Handbook for Incoming Law Exchange Students Prepared by Global Legal Studies Center UW Law School Directors .......................................................................... 5 Selecting courses in conjunction with other material sent to you by the International Academic Programs (IAP) which coordinates

  3. EO 12898: Environmental Justice in Minority Populations and Low-Income Populations

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based|DepartmentStatementof EnergyQuality'Lean'1401 LEEWHITE HOUSE

  4. Energy demand and population changes

    SciTech Connect (OSTI)

    Allen, E.L.; Edmonds, J.A.

    1980-12-01

    Since World War II, US energy demand has grown more rapidly than population, so that per capita consumption of energy was about 60% higher in 1978 than in 1947. Population growth and the expansion of per capita real incomes have led to a greater use of energy. The aging of the US population is expected to increase per capita energy consumption, despite the increase in the proportion of persons over 65, who consume less energy than employed persons. The sharp decline in the population under 18 has led to an expansion in the relative proportion of population in the prime-labor-force age groups. Employed persons are heavy users of energy. The growth of the work force and GNP is largely attributable to the growing participation of females. Another important consequence of female employment is the growth in ownership of personal automobiles. A third factor pushing up labor-force growth is the steady influx of illegal aliens.

  5. GDP-L-fucose: {beta}-D-galactoside 2-{alpha}-Lfucosyltransferases, DNA sequences encoding the same, method for producing the same and a method of genotyping a person

    DOE Patents [OSTI]

    Lowe, J.B.; Lennon, G.; Rouquier, S.; Giorgi, D.; Kelly, R.J.

    1998-09-15

    The gene encoding GDP-L-fucose: {beta}-D-Galactoside 2-{alpha}-Lfucosyltransferase has been cloned, and a mutation in this gene has been found to be responsible for an individual being a non-secretor. 30 figs.

  6. Better Buildings Low Income Peer Exchange CallFeaturing: Case...

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

    14, 2011 BetterBuildings Low Income Peer Exchange Call Featuring: Case study on integration of income-qualified programs into Michigan's BetterBuildings program Call Slides and...

  7. Life in low income families in Scotland: research report 

    E-Print Network [OSTI]

    McKendrick, John H; Cunningham-Burley, Sarah; Backett-Milburn, Kathryn

    Living on a low income is a problem that the Scottish Executive and UK Parliament want to tackle. Previous work has focused on measuring the number of people living on a low income. This research was commissioned to ...

  8. EmPOWER Maryland Low Income Energy Efficiency Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Maryland Department of Housing and Community Development (DHCD) EmPOWER Maryland Low Income Energy Efficiency Program helps qualifying low-income residents increase the energy efficiency of t...

  9. Income Inequality and Mortality: The Costa RIcan Case

    E-Print Network [OSTI]

    Modrek, Sepideh

    2009-01-01

    44-49). San Francisco Kuznets, S. (1955). Economic Growthin income inequality (Kuznets, 1955), but benefits from this

  10. Better Buildings Residential Multifamily/Low-Income Peer Exchange...

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

    6 Data & Evaluation Financing & Revenue Marketing & Outreach Multi-Family Low Income Housing Program Sustainability Workforce Business Partners...

  11. Universal Laws of Human Society's Income Distribution

    E-Print Network [OSTI]

    Tao, Yong

    2015-01-01

    General equilibrium equations in economics play the same role with many-body Newtonian equations in physics. Accordingly, each solution of the general equilibrium equations can be regarded as a possible microstate of the economic system. Since Arrow's Impossibility Theorem and Rawls' principle of social fairness will provide a powerful support for the hypothesis of equal probability, then the principle of maximum entropy is available in a just and equilibrium economy so that an income distribution will occur spontaneously (with the largest probability). Remarkably, some scholars have observed such an income distribution in some democratic countries, e.g. USA. This result implies that the hypothesis of equal probability may be only suitable for some "fair" systems (economic or physical systems). From this meaning, the non-equilibrium systems may be "unfair" so that the hypothesis of equal probability is unavailable.

  12. Better Buildings Neighborhood Program, BetterBuildings Low Income...

    Energy Savers [EERE]

    Messaging and Messaging Strategies for Low Income Program Participants Agenda * Call logistics and Roll Call * Discussion Questions: What messaging have you found successful...

  13. Better Buildings Neighborhood Program Multi-Family and Low Income...

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

    Multi-Family and Low Income Peer Exchange Call: Using Partnerships to Drive Demand and Provide Services in Communities Agenda * Call Logistics and Attendance What kind of...

  14. Delivering Energy Efficiency to Middle Income Single Family Households

    SciTech Connect (OSTI)

    none,

    2011-12-01

    Provides state and local policymakers with information on successful approaches to the design and implementation of residential efficiency programs for households ineligible for low-income programs.

  15. Better Buildings Neighborhood Program Multi-family/ Low Income...

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

    Program Multi-family Low Income Peer Exchange Call: Information Technology Tools for Multi-family Building Programs Call Slides and Discussion Summary Agenda * Call...

  16. The Denver Energy Challenge-- Serving Moderate Income Residents

    Broader source: Energy.gov [DOE]

    Provides an overview of the Denver Energy Challenge and how services were expanded to moderate income residents including challenges and next steps.

  17. Effective Energy Behavior Change for Low-Income Weatherization Clients

    Office of Energy Efficiency and Renewable Energy (EERE)

    This document contains the transcript for the Effective Energy Behavior Change for Low-Income Weatherization Clients webinar presented on May 31, 2012.

  18. A Study of Income Segregation in Large Chinese Cities

    E-Print Network [OSTI]

    Zhu, Jiren

    2013-01-01

    Harbin Changchun Nanjing Dalian Jinan Qingdao Taiyuangroups. Like Beijing and Dalian, their segregation profilesis remarkably lower than Dalian‘s level from low-income

  19. Three: Should California Adopt an Earned Income Tax Credit?

    E-Print Network [OSTI]

    Stark, Kirk J

    2006-01-01

    EARNED INCOME TAX CREDIT? Kirk J. Stark, Professor of Law,years. On this strategy, see Kirk J. Stark, Smart Tax Laws

  20. Measurement and Verification of Low Income Energy Efficiency...

    Open Energy Info (EERE)

    Measurement and Verification of Low Income Energy Efficiency Programs in Brazil: Methodological Challenges Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Measurement...

  1. Approaches to Electric Utility Energy Efficiency for Low Income...

    Open Energy Info (EERE)

    Approaches to Electric Utility Energy Efficiency for Low Income Customers in a Changing Regulatory Environment Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Approaches...

  2. Fact #565: April 6, 2009 Household Gasoline Expenditures by Income

    Broader source: Energy.gov [DOE]

    In the annual Consumer Expenditure Survey, household incomes are grouped into five equal parts called quintiles (each quintile is 20%). Households in the second and third quintiles consistently...

  3. China's Pathways to Achieving 40% ~ 45% Reduction in CO{sub 2} Emissions per Unit of GDP in 2020: Sectoral Outlook and Assessment of Savings Potential

    SciTech Connect (OSTI)

    Zheng, Nina; Fridley, David; Zhou, Nan; Levine, Mark; Price, Lynn; Ke, Jing

    2011-09-30

    Achieving China’s goal of reducing its carbon intensity (CO{sub 2} per unit of GDP) by 40% to 45% percent below 2005 levels by 2020 will require the strengthening and expansion of energy efficiency policies across the buildings, industries and transport sectors. This study uses a bottom-up, end-use model and two scenarios -- an enhanced energy efficiency (E3) scenario and an alternative maximum technically feasible energy efficiency improvement (Max Tech) scenario – to evaluate what policies and technical improvements are needed to achieve the 2020 carbon intensity reduction target. The findings from this study show that a determined approach by China can lead to the achievement of its 2020 goal. In particular, with full success in deepening its energy efficiency policies and programs but following the same general approach used during the 11th Five Year Plan, it is possible to achieve 49% reduction in CO{sub 2} emissions per unit of GDP (CO{sub 2} emissions intensity) in 2020 from 2005 levels (E3 case). Under the more optimistic but feasible assumptions of development and penetration of advanced energy efficiency technology (Max Tech case), China could achieve a 56% reduction in CO{sub 2} emissions intensity in 2020 relative to 2005 with cumulative reduction of energy use by 2700 Mtce and of CO{sub 2} emissions of 8107 Mt CO{sub 2} between 2010 and 2020. Energy savings and CO{sub 2} mitigation potential varies by sector but most of the energy savings potential is found in energy-intensive industry. At the same time, electricity savings and the associated emissions reduction are magnified by increasing renewable generation and improving coal generation efficiency, underscoring the dual importance of end-use efficiency improvements and power sector decarbonization.

  4. Is Inequality Inevitable in Society? Income Distribution as a Consequence

    E-Print Network [OSTI]

    Sinha, Sitabhra

    inequality when he collected data on income distribution in several countries including England, Peru a power law relation, with the number of households having income greater than x, N(x) x- . He further observed were around 1.5, possibly the first report of universal- ity in a power law relation from

  5. Exact Measures of Income in a Hyperbolic Economy

    E-Print Network [OSTI]

    Pezzey, Jack

    Exact Measures of Income in a Hyperbolic Economy JOHN PEZZEY EEN0203 #12;Exact Measures of Income in a Hyperbolic Economy John C. V. Pezzey Centre for Resource and Environmental Studies Australian National.K. Draft of 23 January 2002 Abstract. Exact optimal paths are calculated for a closed economy with human

  6. UNIVERSITY OF UTAH INCOME ACCOUNTING & STUDENT LOAN SERVICES

    E-Print Network [OSTI]

    UNIVERSITY OF UTAH INCOME ACCOUNTING & STUDENT LOAN SERVICES 201 SOUTH 1460 EAST, ROOM 165 SALT FOR PREAUTHORIZED LOAN PAYMENTS I hereby authorize the University of Utah's Income Accounting & Student Loan the same to the financial institution and account listed below, for loan payments

  7. UNIVERSITY OF UTAH INCOME ACCOUNTING & STUDENT LOAN SERVICES

    E-Print Network [OSTI]

    UNIVERSITY OF UTAH INCOME ACCOUNTING & STUDENT LOAN SERVICES 201 SOUTH 1460 EAST, ROOM 165 TELEPHONE: 581-7344 FAX: 585-3898 AUTHORIZATION AGREEMENT FOR DIRECT DEPOSIT OF STUDENT ACCOUNT CREDIT I hereby authorize the University of Utah's Income Accounting & Student Loan Services Department

  8. "Table HC7.5 Space Heating Usage Indicators by Household Income...

    U.S. Energy Information Administration (EIA) Indexed Site

    Income, 2005" " Million U.S. Housing Units" ,,"2005 Household Income",,,,,"Below Poverty Line","Eligible for Federal Assistance1" ,"Housing Units (millions)" ,,"Less than...

  9. Table HC1-3a. Housing Unit Characteristics by Household Income...

    Gasoline and Diesel Fuel Update (EIA)

    3a. Housing Unit Characteristics by Household Income, Million U.S. Households, 2001 Housing Unit Characteristics RSE Column Factor: Total 2001 Household Income Below Poverty Line...

  10. Targeted Marketing and Program Design for Low- and Moderate-Income...

    Energy Savers [EERE]

    Targeted Marketing and Program Design for Low- and Moderate-Income Households Targeted Marketing and Program Design for Low- and Moderate-Income Households Better Buildings...

  11. A 2-step Empirical Likelihood approach for combining sample and population data in regression estimation

    E-Print Network [OSTI]

    Chaudhuri, Sanjay

    with the dependent variables are known from the population level data, obtained as for example from census then be obtained by maximizing the likelihood function under the population level constraints. The method can covariates is modeled using a combination of sample data from the Panel Study of Income Dynamics (PSID, Hill

  12. Federal options for low-income electricity policy

    SciTech Connect (OSTI)

    Baxter, L.W.

    1998-06-01

    Protection of low-income consumers remains an important public policy concern in a restructuring electricity industry. Policies are needed to ensure that low-income households have enough affordable electricity to protect their health and safety, and that they are not victimized by unscrupulous suppliers. In this paper, the author presents three broad federal roles in setting low-income electricity policy, and discuss three more specific policy areas: universal service, electricity assistance, and health and safety. He discusses the key policy issues that arise when considering these potential federal initiatives and draw upon reviews of proposed low-income policies from restructuring proposals in eight states--California, Massachusetts, New Hampshire, New York, Pennsylvania, Rhode Island, Vermont, and Wisconsin.

  13. Oil Prices, External Income, and Growth: Lessons from Jordan

    E-Print Network [OSTI]

    Mohaddes, Kamiar; Raissi, Mehdi

    2011-12-08

    This paper extends the long-run growth model of Esfahani et al. (2009) to a labour exporting country that receives large inflows of external income - the sum of remittances, FDI and general government transfers - from major oil exporting economies...

  14. Wind Development Found to Increase County-Level Personal Income...

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

    Personal Income January 10, 2013 - 2:21pm Addthis This is an excerpt from the Fourth Quarter 2012 edition of the Wind Program R&D Newsletter. The U.S. Department of...

  15. Top Incomes in the Long Run of History

    E-Print Network [OSTI]

    Atkinson, Anthony B.; Piketty, Thomas; Saez, Emmanuel

    2012-01-01

    in top income shares in Finland,” Atkinson, A. B. and T.Singapore Argentina Sweden Finland Norway Share of top 0.1U/L-shaped),1900- 2006 Sweden Finland Norway Spain Portugal

  16. Low Impact, Affordable, Low Income Houses for Mexico 

    E-Print Network [OSTI]

    Alcocer, J. L. B.; Haberl, J. S.

    2010-01-01

    This paper discusses an effort to develop low impact, affordable, low income houses for Mexico. Low impact houses are defined as houses with energy and water needs that are substantially reduced below levels corresponding to code compliance...

  17. The Farmer's Conundrum: Income from Biofuels or Protect the Soil?

    Broader source: Energy.gov [DOE]

    Selling crop residues for bioenergy could provide farmers with an extra source of income, but leaving some residue on the fields has benefits too. So how can land managers find this balance?

  18. Resource handbook for low-income residential retrofits

    SciTech Connect (OSTI)

    Callaway, J.W.; Brenchley, D.L.; Davis, L.J.; Ivey, D.L.; Smith, S.A.; Westergard, E.J.

    1987-04-01

    The purpose of the handbook is to provide technical assistance to state grantees participating in the Partnerships in Low-Income Residential Retrofit (PILIRR) Program. PILIRR is a demonstration program aimed at identifying innovative, successful approaches to developing public and private support for weatherization of low-income households. The program reflects the basic concept that responsibility for financial support for conservation activities such as low-income residential retrofitting is likely to gradually shift from the DOE to the states and the private sector. In preparing the handbook, PNL staff surveyed over 50 programs that provide assistance to low-income residents. The survey provided information on factors that contribute to successful programs. PNL also studied the winning PILIRR proposals (from the states of Florida, Iowa, Kentucky, Oklahoma and Washington) and identified the approaches proposed and the type of information that would be most helpful in implementing these approaches.

  19. Three: Should California Adopt an Earned Income Tax Credit?

    E-Print Network [OSTI]

    Stark, Kirk J

    2006-01-01

    which depends upon the taxpayer’s earned income. 15 In itson how many children the taxpayer has. In addition, the EITCof credit to which a taxpayer is entitled can vary widely,

  20. Political competition and Mirrleesian income taxation: A first pass

    E-Print Network [OSTI]

    Bierbrauer, Felix J.; Boyer, Pierre C.

    2011-01-26

    - rium characterization tractable. Section 5 contains the results of the equilibrium analysis and Section 6 outlines the implications for marginal income tax rates. In Section 7, we show how the results change if politicians maximize winning probabilities... and Weibull (1987). Martimort (2001) studies strategic budget deficits and optimal taxation in a model with partisan politics. 6 could think of: an analysis of Downsian competition in a static Mirrleesian model of income taxation. Finally, our paper is related...

  1. EO 12898: Environmental Justice in Minority Populations and Low-Income

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy A plug-inPPL EnergyPlus, LLCConfidentialityOnline Hosted by(1904-AC04) |

  2. Executive Order 12898, Federal Actions to Address Environmental Justice in Minority and Low-Income Populations

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum12, 2015 InfographiclighbulbsDepartmentDeveloping11,Branch Management2123Office

  3. New York City Cabdrivers' Labor Supply Revisited: Reference-Dependence Preferences with Rational-Expectations Targets for Hours and Income

    E-Print Network [OSTI]

    Crawford, Vincent P.; Meng, Juanjuan

    2008-01-01

    the hours and income that would maximize consumption utilitythe income and hours that would maximize consumption utility

  4. Population Analysis, Fall 2005 1 Population Analyses

    E-Print Network [OSTI]

    Clark, William R.

    Population Analysis, Fall 2005 1 Population Analyses EEOB/AEcl 611 Fall Semester 2005 Scheduled's, including MARK, SAS, DISTANCE, and others. We'll often use the "recitation session" to get you started Cooch and Gary White #12;Population Analysis, Fall 2005 2 2001) that can also be downloaded from Evan

  5. MATERIALS TRANSFER AGREEMENT for incoming item(s)

    E-Print Network [OSTI]

    Northern British Columbia, University of

    MATERIALS TRANSFER AGREEMENT for incoming item(s) To be used when an item(s) is being provided for demonstration or loaner purposes. This Materials Transfer Agreement ("Agreement") is made by and between, the University is interested in receiving from the Provider certain material(s), defined below

  6. Integrating Photovoltaic Systems into Low-Income Housing Developments

    E-Print Network [OSTI]

    through funding from the Solar America Showcase activity of the U.S. Department of Energy's Solar Energy of a New Residential Financing Model and Low-Income Resident Job Training Program SEPTEMBER 2011 SOLAR Technologies Program. To learn more, please visit: www.solar.energy.gov/solar_america_showcases.html Authors

  7. QER- Comment of Low-income Energy Affordability Network [MA

    Broader source: Energy.gov [DOE]

    Thank you, Secretary Moniz for the opportunity to submit testimony, I am entering this testimony to call attention to the Secretary and DOE staff, that DOE has operated a successful energy efficiency program for low income renters and home owners since DOE’s creation as a department, that leverages hundreds of millions of dollars in utility and other governmental and private investments...

  8. C.D. Howe Institute Taxing Emissions, Not Income

    E-Print Network [OSTI]

    C.D. Howe Institute COMMENTARY Taxing Emissions, Not Income: How to Moderate the Regional Impact... If policymakers wish to reduce Canadian greenhouse gas emissions, they can do so using a suite of policy tools dioxide and other GHG emissions. However, policymakers have yet to take such action because of concerns

  9. Statistical Mechanics of Money, Income, Debt, and Energy Consumption

    E-Print Network [OSTI]

    Lathrop, Daniel P.

    Statistical Mechanics of Money, Income, Debt, and Energy Consumption Physics Colloquium Presented in financial markets. Globally, data analysis of energy consumption per capita around the world shows@american.edu Similarly to the probability distribution of energy in physics, the probability distribution of money among

  10. Energy and Indoor Environmental Quality Retrofits in Low-Income

    E-Print Network [OSTI]

    environmental measurements and collect energy consumption data. Based on analyses of the data collected fromEnergy and Indoor Environmental Quality Retrofits in Low-Income Apartments ENVIRONMENTAL ENERGY RESEARCH PIER Environmental Research www.energy.ca.gov/research/environmental August 2011 The Issue

  11. Financial Policy Manual 2121 ACCOUNTING FOR PROGRAM INCOME

    E-Print Network [OSTI]

    George, Edward I.

    property or items fabricated under an Award. Note: Income earned from license fees and royalties on patents of the award, either is required to be remitted to the sponsor, or may be used as additional project support is added to the funds committed to the project to further the objectives of the award; 2. Matching, used

  12. A Welcome to Incoming Optics Students from the Director

    E-Print Network [OSTI]

    A Welcome to Incoming Optics Students from the Director It is my great pleasure to welcome you to The Institute of Optics, to join the training for the next generation of leaders in the field. Approximately half of all optics degrees awarded nationwide have been awarded by our institute since its founding

  13. Family Moderate Income Homeowners In New York State

    Broader source: Energy.gov [DOE]

    "Family Moderate Income Homeowners In New York State: Enhancing Resource Accessibility Through Process Improvement and Targeted Outreach," by Residential Energy Efficiency Solutions, July 10, 2012, Arlington, Virginia. Provides an overview of broadening accessibility to financing through process improvement and targeted outreach.

  14. Impacts of Climate Conditions and Adaptations on Agricultural Output and Household Income in Inner Mongolia, China 

    E-Print Network [OSTI]

    Chen, Wenjuan

    2014-07-31

    indicated that land degradation hurt the poorest household groups most and that conservation programs benefited the same groups the most significantly with respect to household income. In addition, diversification of income sources contribute significantly...

  15. "Shelter within my reach" : medium rise apartment housing for the middle income group in Karachi, Pakistan

    E-Print Network [OSTI]

    Mahmood, Saman, 1972-

    1999-01-01

    This thesis identifies the project development processes of medium rise (five storied or less) apartment housing built by the private formal sector, catering to the middle income groups in Karachi, Pakistan. Middle income ...

  16. Mali-Program for Scaling Up Renewable Energy in Low Income Countries...

    Open Energy Info (EERE)

    Mali-Program for Scaling Up Renewable Energy in Low Income Countries (SREP) Jump to: navigation, search Name Mali-Program for Scaling Up Renewable Energy in Low Income Countries...

  17. Popular urban settlements in Athens : a comparative study of low income housing

    E-Print Network [OSTI]

    Kitsiou, Triada

    1981-01-01

    This study is concerned with aspects of housing and urban development related to the lower income groups in the context of urbanization in Athens, Greece. It identifies and evaluates typical low income housing settlements ...

  18. CommunityOrganizedHouseholdWaterIncreasesNot Only Rural incomes, but AlsoMen’sWork

    E-Print Network [OSTI]

    Corw, Ben; Swallow, Brent; Asamba, Isabella

    2012-01-01

    average incomes in this group of seven springs. Kipsotet, as1. Characteristics of the seven spring groups Spring Group

  19. TOP INCOMES IN THE UNITED STATES AND CANADA OVER THE TWENTIETH CENTURY

    E-Print Network [OSTI]

    Sadoulet, Elisabeth

    TOP INCOMES IN THE UNITED STATES AND CANADA OVER THE TWENTIETH CENTURY Emmanuel Saez University of California, Berkeley Abstract This paper presents top income shares series for the United States and Canada over the 20th century. In both countries, top income shares display a U-shaped pattern over the century

  20. Page 1 of 2 80.4 Managing Program Income Earned on Federally Funded Research

    E-Print Network [OSTI]

    Yang, Eui-Hyeok

    under an award, or license fees. Program income does not include the receipt of principal on loans of an award. Program income includes, but is not limited to, income from fees for services performed on federal awards, the sponsoring agency usually specifies in the award terms and conditions how the program

  1. What Drives the Public Mood of Income Inequality 

    E-Print Network [OSTI]

    Myers, Rebekah M

    2014-08-13

    on Income Inequality Move Opinion? . . . 5 1.3.1 Presidential Agenda Setting . . . . . . . . . . . . . . . . . . . 5 1.3.2 Can the President Move Opinion? . . . . . . . . . . . . . . . . 6 1.3.3 Strategic Presidential Rhetoric... Inequality Move Opinion? 1.3.1 Presidential Agenda Setting The president is elected with expectations that he will implement the policies he advocated for in his platform during his campaign. These issues have been strate- gically predetermined...

  2. The Embedded Economy and National Income Inequality: A Cross-National Analysis of Production Globalization and Labor Market Institutions

    E-Print Network [OSTI]

    Roberts, Anthony J.

    2015-01-01

    Investment and Income Inequalit y: The Natural Experiment ofChristian Morrisson. 2002. "Inequality Among World Citizens:Institutions and Income Inequality." Economic Policy 56:

  3. USAGE-BASEDPRICING OF PACKET DATA GENERATED BY A HETEROGENEOUSUSER POPULATION

    E-Print Network [OSTI]

    Honig, Michael L.

    of random user population. These examples indicate that adjusting the price to maximize revenue results statistical assumptions about the incoming trafic streams and the QoS as a function of offered load an appropriate response which maximizes the value they obtain from the service. A second benefit of pricing

  4. Evaluating the income and employment impacts of gas cooling technologies

    SciTech Connect (OSTI)

    Hughes, P.J.; Laitner, S.

    1995-03-01

    The purpose of this study is to estimate the potential employment and income benefits of the emerging market for gas cooling products. The emphasis here is on exports because that is the major opportunity for the U.S. heating, ventilating, and air-conditioning (HVAC) industry. But domestic markets are also important and considered here because without a significant domestic market, it is unlikely that the plant investments, jobs, and income associated with gas cooling exports would be retained within the United States. The prospects for significant gas cooling exports appear promising for a variety of reasons. There is an expanding need for cooling in the developing world, natural gas is widely available, electric infrastructures are over-stressed in many areas, and the cost of building new gas infrastructure is modest compared to the cost of new electric infrastructure. Global gas cooling competition is currently limited, with Japanese and U.S. companies, and their foreign business partners, the only product sources. U.S. manufacturers of HVAC products are well positioned to compete globally, and are already one of the faster growing goods-exporting sectors of the U.S. economy. Net HVAC exports grew by over 800 percent from 1987 to 1992 and currently exceed $2.6 billion annually (ARI 1994). Net gas cooling job and income creation are estimated using an economic input-output model to compare a reference case to a gas cooling scenario. The reference case reflects current policies, practices, and trends with respect to conventional electric cooling technologies. The gas cooling scenario examines the impact of accelerated use of natural gas cooling technologies here and abroad.

  5. A structural analysis of natural gas consumption by income class from 1987 to 1993

    SciTech Connect (OSTI)

    Poyer, D.A.

    1996-12-01

    This study had two major objectives: (1) assess and compare changes in natural gas consumption between 1987 and 1993 by income group and (2) assess the potential influence of energy policy on observed changes in natural gas consumption over time and across income groups. This analysis used U.S. Department of Energy (DOE) data files and involved both the generation of simple descriptive statistics and the use of multivariate regression analysis. The consumption of natural gas by the groups was studied over a six-year period. The results showed that: (1) natural gas use was substantially higher for the highest income group than for the two lower income groups and (2) natural gas consumption declined for the lowest and middle income quintiles and increased for the highest income quintile between 1987 and 1990; between 1990 and 1993, consumption increased for the lowest and middle income quintile, but remained relatively constant for the highest income quintile. The relative importance of the structural and variable factors in explaining consumption changes between survey periods varies by income group. The analysis provides two major energy policy implications: (1) natural gas intensity has been the highest for the lowest income group, indicating that this group is more vulnerable to sudden changes in demand-indicator variables, in particular weather-related variables, than increase natural gas consumption, and (2) the fall in natural gas intensity between 1987 and 1993 may indicate that energy policy has had some impact on reducing natural gas consumption. 11 refs., 4 figs., 16 tabs.

  6. BC Hydro Brings Energy Savings to Low-Income Families in Canada...

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

    the impact of rising electricity costs in Canada. ECAP provides qualified low-income BC Hydro residential account holders with a free home energy assessment; installation of...

  7. Effect of Income on Appliances in U.S. Households, The

    Reports and Publications (EIA)

    2004-01-01

    Entails how people live, the factors that cause the most differences in home lifestyle, including energy use in geographic location, socioeconomics and household income.

  8. California Solar Initiative- Low-Income Solar Water Heating Rebate Program

    Broader source: Energy.gov [DOE]

    The California Public Utilities Commission (CPUC) voted in October 2011 to create the California Solar Initiative (CSI) Thermal Low-Income program for single and multifamily residential properties....

  9. Forum on Enhancing the Delivery of Energy Efficiency to Middle Income Households: Discussion Summary

    SciTech Connect (OSTI)

    none,

    2012-09-20

    Summarizes discussions and recommendations from a forum for practitioners and policymakers aiming to strengthen residential energy efficiency program design and delivery for middle income households.

  10. Low-income communities : technological strategies for nurturing community, empowerment and self-sufficiency at a low-income housing development

    E-Print Network [OSTI]

    O'Bryant, Richard Louis, 1964-

    2004-01-01

    There are a number of historically familiar and unfamiliar forces at work in low-income communities in the United States. Recurrent forces include rapidly changing economic and demographic trends, Welfare Reform, and the ...

  11. Energy Systems and Population Health

    SciTech Connect (OSTI)

    Ezzati, Majid; Bailis, Rob; Kammen, Daniel M.; Holloway, Tracey; Price, Lynn; Cifuentes, Luis A.; Barnes, Brendon; Chaurey, Akanksha; Dhanapala, Kiran N.

    2004-04-12

    It is well-documented that energy and energy systems have a central role in social and economic development and human welfare at all scales, from household and community to regional and national (41). Among its various welfare effects, energy is closely linked with people s health. Some of the effects of energy on health and welfare are direct. With abundant energy, more food or more frequent meals can be prepared; food can be refrigerated, increasing the types of food items that are consumed and reducing food contamination; water pumps can provide more water and eliminate the need for water storage leading to contamination or increased exposure to disease vectors such as mosquitoes or snails; water can be disinfected by boiling or using other technologies such as radiation. Other effects of energy on public health are mediated through more proximal determinants of health and disease. Abundant energy can lead to increased irrigation, agricultural productivity, and access to food and nutrition; access to energy can also increase small-scale income generation such as processing of agricultural commodities (e.g., producing refined oil from oil seeds, roasting coffee, drying and preserving fruits and meats) and production of crafts; ability to control lighting and heating allows education or economic activities to be shielded from daily or seasonal environmental constraints such as light, temperature, rainfall, or wind; time and other economic resources spent on collecting and/or transporting fuels can be used for other household needs if access to energy is facilitated; energy availability for transportation increases access to health and education facilities and allow increased economic activity by facilitating the transportation of goods and services to and from markets; energy for telecommunication technology (radio, television, telephone, or internet) provides increased access to information useful for health, education, or economic purposes; provision of energy to rural and urban health facilities allows increased delivery and coverage of 3 various health services and interventions such as tests and treatments, better storage of medicine and vaccines, disinfection of medical equipment by boiling or radiation, and more frequent and efficient health system encounters through mobile clinics or longer working hours; and so on. In fact, while the dominant view of development-energy-health linkages has been that improvements in energy and health are outcomes of the socioeconomic development process (e.g., the ''energy ladder'' framework discussed below), it has even been argued that access to higher quality energy sources and technologies can initiate a chain of demographic, health, and development outcomes by changing the household structure and socioeconomic relationships. For example, in addition to increased opportunities for food and income production, reduced infant mortality as a result of transition to cleaner fuels or increased coverage of vaccination with availability of refrigerators in rural clinics may initiate a process of ''demographic transition'' to low-mortality and low-fertility populations (14). Such a transition has historically been followed with further improvements in maternal and child health and increased female participation in the labor markets and other economic activities.

  12. Marketing Compost A Guide for Compost Producers in Low and Middle-Income Countries

    E-Print Network [OSTI]

    Wehrli, Bernhard

    Marketing Compost A Guide for Compost Producers in Low and Middle-Income Countries Sandec #12;Marketing Compost A Guide for Compost Producers in Low and Middle-Income Countries Jonathan Rouse Introduction 7 2 Background 11 2.1 What is marketing? 11 2.2 Why is marketing important for compost producers

  13. The effects of capital on an income breeder: evidence from female Columbian ground squirrels

    E-Print Network [OSTI]

    Broussard, David

    The effects of capital on an income breeder: evidence from female Columbian ground squirrels David R. Broussard, F. Stephen Dobson, and J.O. Murie Abstract: To maximize fitness, organisms must and daily resource income on the reproductive investments of females. We predicted that because yearling fe

  14. Enabling energy efficiency for low-income housing in Developing countries using MIT Design Advisor

    E-Print Network [OSTI]

    Ali, Zehra (Zehra Hyder)

    2009-01-01

    There is a great need to improve energy efficiency of low-income housing, since people who can afford it least have to pay a significant portion of their income to make their homes more habitable or else live with greater ...

  15. Introduction Physics Environmental Issues Social Justice Disasters Activity: Income Inequality How to Mathematize the World

    E-Print Network [OSTI]

    Lega, Joceline

    Introduction Physics Environmental Issues Social Justice Disasters Activity: Income Inequality How Rincon High School University of Arizona 1/22/11 #12;Introduction Physics Environmental Issues Social Justice Disasters Activity: Income Inequality Outline Introduction Who are We? Why are We Here? Physics

  16. Public Management as Citizen Compliance: A Case Study of Income Tax Compliance Behavior in Thailand

    E-Print Network [OSTI]

    Chandarasorn, Maneekwan

    2012-08-31

    countries including Thailand, where a personal income tax gap is at least 200 billion Baht ($6.7 billion) or 10% of the total revenue. The two major purposes of this study are 1) to explore citizens' perceptions of the Thai personal income tax system...

  17. Income and Beyond: Taking the Measure of Child Deprivation in the United States

    E-Print Network [OSTI]

    Salzman, Daniel

    not captured by more standard income poverty and material hardship measures. The paper concludes of deprivation . Poverty. Income Child Ind Res DOI 10.1007/s12187-014-9246-6 R. Ciula Italian Revenue Agency in Poverty, Columbia University, New York, NY 10027, USA e-mail: skinner@nccp.org Author's personal copy #12

  18. Parallel grid population

    DOE Patents [OSTI]

    Wald, Ingo; Ize, Santiago

    2015-07-28

    Parallel population of a grid with a plurality of objects using a plurality of processors. One example embodiment is a method for parallel population of a grid with a plurality of objects using a plurality of processors. The method includes a first act of dividing a grid into n distinct grid portions, where n is the number of processors available for populating the grid. The method also includes acts of dividing a plurality of objects into n distinct sets of objects, assigning a distinct set of objects to each processor such that each processor determines by which distinct grid portion(s) each object in its distinct set of objects is at least partially bounded, and assigning a distinct grid portion to each processor such that each processor populates its distinct grid portion with any objects that were previously determined to be at least partially bounded by its distinct grid portion.

  19. Investigating the book-tax income gap : factors which affect the gap and details regarding its most significant component

    E-Print Network [OSTI]

    Seidman, Jeri

    2008-01-01

    (cont.) In total, my thesis suggests that recent changes in the book-tax income gap may be exogenous and transitory, due to changes to the calculation of book income, general business conditions or other factors which ...

  20. Context Interchange Mediation for Semantic Interoperability and Dynamic Integration of Autonomous Information Sources in the Fixed Income Securities Industry

    E-Print Network [OSTI]

    Siegel, Michael

    2003-02-10

    We examine semantic interoperability problems in the fixed income securities industry and propose a knowledge representation architecture for context interchange ...

  1. Determinants of SNAP Participation: Employing a Structural Vulnerability of Poverty Framework to Examine SNAP Participation Among Low-Income Heads of Households

    E-Print Network [OSTI]

    Rosen, Gina L

    2015-01-01

    Among  Low-­?Income   Heads  of  Households.  Association  Participation Among Low-Income Heads of Households By GinaRecession among elderly low-income heads of households. The

  2. Principles of Population Health Science Population Health 795

    E-Print Network [OSTI]

    Sheridan, Jennifer

    1 Principles of Population Health Science Population Health 795 A course in the Program in Population Health Fall 2012 University of Wisconsin-Madison, School of Medicine and Public Health The lecture in medicine and public health, inequities in health persist. Understanding health on a population level

  3. Urban settlement design, Seoul, Korea : a comparative study for low-income housing

    E-Print Network [OSTI]

    Je, Hae-Seong

    1982-01-01

    The study proposes an alternative design approach for urban dwelling environments of the low-income sectors in Seoul, Korea, based upon a comparative evaluation of the physical and socio-economic performance of the existing ...

  4. Displacement, politics and governance : access to low-income housing in a Beirut suburb

    E-Print Network [OSTI]

    Bou Akar, Hiba

    2005-01-01

    Lebanon witnessed large-scale phases of internal displacement during and after its civil war (1975-1990). This study analyzes access to low-income housing for a Lebanese Shiites group which has already experienced two ...

  5. The Low-Income Housing Tax Credit : HERA, ARRA and beyond

    E-Print Network [OSTI]

    Korb, Jason (Jason Bryan Patricof)

    2009-01-01

    The Low-Income Housing Tax Credit (LIHTC) has arguably been the most successful government subsidy to finance affordable housing. Since its creation in the Tax Reform Act of 1986 as Internal Revenue Code (IRC) Section 42, ...

  6. Investigation of an empirical methodology for linking value of time with census tract median income 

    E-Print Network [OSTI]

    Stockton, William Radney

    2009-05-15

    This research examines a new methodology for prospectively estimating the willingness of travelers to use a toll road by combining travel time saved with the income of the prospective customer base. The purpose of the ...

  7. Projecting net incomes for Texas crop producers: an application of probabilistic forecasting 

    E-Print Network [OSTI]

    Eggerman, Christopher Ryan

    2006-10-30

    Agricultural policy changes directly affect the economic viability of Texas crop producers because government payments make up a significant portion of their net farm income (NFI). NFI projections benefit producers, ...

  8. Identifying Predictors of Instrumental and Reactive Aggression Among Low-Income Minority Adolescent Girls

    E-Print Network [OSTI]

    Williford, Anne; DePaolis, Kathryn J.

    2012-01-01

    Research on both the forms and functions of aggression has yet to include the experiences of low-income minority adolescent girls, particularly Latinas. The present study addresses this limitation by applying ecological systems theory to identify...

  9. A decision support system for income-producing real estate development feasibility analysis and alternative assessment 

    E-Print Network [OSTI]

    Leelarasamee, Yosaporn

    2005-08-29

    The purpose of this study is to design, develop, and evaluate a prototype scenarioassisted decision support system (DSS) for use in venture and alternative assessment during the predevelopment stage of income-producing real estate development...

  10. Retirement Income Plan (Basic Plan) Salary Reduction Agreement Catch-up Contribution

    E-Print Network [OSTI]

    Emmons, Scott

    Retirement Income Plan (Basic Plan) Salary Reduction Agreement Catch-up Contribution IRS-up contribution limit. Option 1: Maximize My Catch-up Contributions on either a pre-tax or after-tax Roth Basis I

  11. The Role of Acculturation in Nutrition Behaviors among Low Income Hispanic Women Living in Texas 

    E-Print Network [OSTI]

    Atehortua, Nelson

    2012-10-19

    The purpose of this study was to determine the role of acculturation in the food consumption patterns of low income Hispanic women living in Texas and enrolled in the Women, Infants, and Children (WIC) Program by testing ...

  12. Low-income communities in World Heritage Cities : revitalizing neighborhoods in Tunis and Quito

    E-Print Network [OSTI]

    Young, T. Luke, 1972-

    2000-01-01

    Since the 1970s, international preservation and funding agencies have promoted revitalization projects in developing countries aiming to, among other things, benefit low-income communities. For the most part, these projects ...

  13. Incoming Students Compiled 21.1.2015 12:12:46 by Document Globe 1

    E-Print Network [OSTI]

    Cerveny, Vlastislav

    Incoming Students Compiled 21.1.2015 12:12:46 by Document Globe ® 1 A period of study at Charles (the cotutelle system), and Erasmus Mundus II international programmes. #12;Compiled 21.1.2015 12

  14. Unaffordable fare : the cost of public transportation for low-income commuters working at three airports

    E-Print Network [OSTI]

    Nadeau, Carey Anne

    2015-01-01

    For airport employers, making sure the many low-income people they employ as baggage handlers and retail salespeople, amongst others, can get to work ensures the continued efficient operations of the airport and the ...

  15. Low income housing tax credit properties : non-profit disposition strategies in the Commonwealth

    E-Print Network [OSTI]

    Lew-Hailer, Lillian

    2007-01-01

    This thesis examines how non-profit owners in Massachusetts have maintained affordability and ownership of Low-Income Housing Tax Credit (LIHTC) properties after the initial fifteen-year compliance period, at the lowest ...

  16. Global economic changes and income inequality: a test of four competing models 

    E-Print Network [OSTI]

    Morris, Theresa Marie

    1996-01-01

    This study examines the capacity of modernization theory, dependency theory, world system theory, and political democracy theory to explain the determinants of income inequality in less developed countries. The study further ...

  17. Causes, effects, and implications of subletting : experiences from low-income neighborhoods in Third World cities

    E-Print Network [OSTI]

    Bailey, Susan Ruth

    1987-01-01

    In recent years increasing numbers of low-income families in Third World cities have found it necessary to share housing accommodation. Those with access to land may be unable to afford to build their house or to pay the ...

  18. Walkability, transit access, and traffic exposure for low-income residents with subsidized housing.

    E-Print Network [OSTI]

    Houston, Douglas; Basolo, Victoria; Yang, Dongwoo

    2013-01-01

    status of HOPE VI public housing residents. J Health Care1):7---20. 20. Mixed-Income Housing Near Transit; Increasingneighborhood conditions of housing voucher holders by race

  19. Community transportation : alternative transportation provision in a low-income neighborhoods in southeast Atlanta

    E-Print Network [OSTI]

    Alexander, James W., 1977-

    2004-01-01

    Regional transit agencies are ineffective at meeting many of the basic transportation needs of a clustered "Study Area" of low-income Atlanta neighborhoods. For transit dependant residents in the Study Area, getting to the ...

  20. Equitable economic energy efficiency : creating good jobs in low-income efficiency programming

    E-Print Network [OSTI]

    Sarin, Amit

    2009-01-01

    Energy efficiency is an important consideration in energy policy-making. So, a federal program aimed at funding "energy efficiency retrofits" for low-income households could be an important step in increasing the overall ...

  1. UCSB Annual Income Tax Information Return Contacts To request missing forms

    E-Print Network [OSTI]

    -877-467-3821 with additional questions. Nonresident Aliens o IRS Form 1042-S, Foreign Person's U.S. Source Income Subject Nonresident Aliens o California Form 592-B, Report of Tax Withheld at Source on Nonresidents

  2. Income generation through zakat : the Islamization impact on Malaysian religious institution 

    E-Print Network [OSTI]

    Sarif, Suhaili

    2014-07-03

    The aim of this thesis is to examine how the Islamization phenomenon has influenced zakat. The study shows that the distribution of the fund for income generation is a manifestation of the impact of Islamization on the ...

  3. The forgotten class : reconceptualizing contemporary middle-income housing in New York City

    E-Print Network [OSTI]

    Milchman, Karina (Karina Faye)

    2013-01-01

    New York City's costly real estate poses housing affordability challenges for not only low- or even moderate-income households, but also for the so-called "middle class." Because New York is predominantly a renter's market, ...

  4. Plan and Investment Notice JOHNS HOPKINS UNIVERSITY 403(B) PLAN & JOHNS HOPKINS UNIVERSITY INCOME DEFERRAL

    E-Print Network [OSTI]

    1 Plan and Investment Notice JOHNS HOPKINS UNIVERSITY 403(B) PLAN & JOHNS HOPKINS UNIVERSITY INCOME employer's plan which includes: · JOHNS HOPKINS UNIVERSITY 403(B) PLAN ­ Plan ID 103250 ·­ ­ Plan ID 103

  5. Population, Consumption & the Environment

    E-Print Network [OSTI]

    Columbia University

    consumes the 77 trillion barrels of oil energy equivalent per year ­ Fossil fuel consumption (oil, coal12/11/2009 1 Population, Consumption & the Environment Alex de Sherbinin Center for International of carbon in 2001 · The ecological footprint, a composite measure of consumption measured in hectares

  6. Low-income energy assistance programs: a profile of need and policy options

    SciTech Connect (OSTI)

    None

    1980-07-01

    This second report of the Fuel Oil Marketing Advisory Committee (FOMAC) of DOE is twofold: to update information on the energy needs of low-income persons and governmental response to such needs; and to emphasize the need for energy-conservation programs that may alleviate the enormous financial burden placed on low-income people by rising energy prices. FOMAC has continued to develop further and refine its initial energy-conservation recommendations. Mainly, the updated assessment document finds that the poor will expend at least 35% of their income directly on energy and will spend at least 21% of their income on household energy. Other economic impacts of rising energy costs on low-income groups are summarized. Appropriations and stipulations by Congress to aid the lo-income people are reviewed. After careful review of various program designs, FOMAC continues to support the income indexing/vendor line of credit approach. This design provides assistance to elgible households based on: energy needed, cost of fuel, and percentage of income. The cost of implementing the FOMAC design nationally would, according to estimates, range from $3.5 to $4.6 billion for the 1980-1981 winter heating season. A figure of $1.6 to $2.2 billion is being discussed in the Congress. Meeting the ongoing energy needs of the poor will require a coherent national policy which consists of aid in paying energy bills and aid in the poor's effort to conserve energy. The report seeks to promote such policies. Needs assessment, government response, FOMAC model, comments on the programs, projected cost of 1980-1981 Energy Assistance Program, need for conservation programs, and program financing are discussed.

  7. LOGISTIC POPULATION MODEL In the logistic population model ...

    E-Print Network [OSTI]

    2015-08-26

    In the logistic population model, the population growth rate obeys. dP dt. = r(1 ?. P c. )P, P(0) = P0. To solve this equation, we proceed as follow. dP dt. = r(1 ?. P.

  8. Principles of Population Health Science Population Health 795

    E-Print Network [OSTI]

    Sheridan, Jennifer

    1 Principles of Population Health Science Population Health 795 A course in the Program in Population Health Fall 2011 University of Wisconsin-Madison, School of Medicine and Public Health OVERVIEW Despite significant advances in medicine and public health, inequities in health persist. Understanding

  9. Population and Climate Change:Population and Climate Change: Coupling Population Models withCoupling Population Models with

    E-Print Network [OSTI]

    Maryland at College Park, University of

    Coupling Population Models with Earth System ModelsEarth System Models Eugenia Kalnay, Safa Motesharrei, Jorge Rivas Change: Fully Coupling Population and Earth System Models" My research at the U. of Maryland #12

  10. Population Density by County, 2000

    SciTech Connect (OSTI)

    None

    2009-01-18

    Map showing a United States profile including race, population by sex and age, housing tenure, and more.

  11. POPULATION III HYPERNOVAE

    SciTech Connect (OSTI)

    Smidt, Joseph; Whalen, Daniel J. [T-2, Los Alamos National Laboratory, Los Alamos, NM 87545 (United States); Wiggins, Brandon K. [Department of Physics and Astronomy, Brigham Young University, Provo, UT 84602 (United States); Even, Wesley; Fryer, Chris L. [CCS-2, Los Alamos National Laboratory, Los Alamos, NM 87545 (United States); Johnson, Jarrett L., E-mail: dwhalen1999@gmail.com [XTD-PRI, Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)

    2014-12-20

    Population III supernovae have been of growing interest of late for their potential to directly probe the properties of the first stars, particularly the most energetic events that are visible near the edge of the observable universe. Until now, hypernovae, the unusually energetic Type Ib/c supernovae that are sometimes associated with gamma-ray bursts, have been overlooked as cosmic beacons at the highest redshifts. In this, the latest of a series of studies on Population III supernovae, we present numerical simulations of 25-50 M {sub ?} hypernovae and their light curves done with the Los Alamos RAGE and SPECTRUM codes. We find that they will be visible at z = 10-15 to the James Webb Space Telescope and z = 4-5 to the Wide-Field Infrared Survey Telescope, tracing star formation rates in the first galaxies and at the end of cosmological reionization. If, however, the hypernova crashes into a dense shell ejected by its progenitor, it is expected that a superluminous event will occur that may be seen at z ? 20 in the first generation of stars.

  12. The response of world energy and oil demand to income growth and changes in oil prices

    SciTech Connect (OSTI)

    Dargay, J. [Oxford Univ. (United Kingdom). Transport Studies Unit; Gately, D. [New York Univ., NY (United States). Economics Dept.

    1995-11-01

    This paper reviews the path of world oil demand over the past three decades, and the effects of both the oil price increases of the 1970s and the oil price decreases of the 1980s. Compared with demand in the industrialized countries, demand in the Less Developed Countries (LDC) has been more responsive to income growth, less responsive to price increases, and more responsive to price decreases. The LDC has also exhibited much greater heterogeneity in income growth and is effect on demand. The authors expect a smaller demand response to future price increases than to those of the 1970s. The demand response to future income growth will be not substantially smaller than in the past. Finally, given the prospect of growing dependence on OPEC oil, in the event of a major disruption the lessened price-responsiveness of demand could cause dramatic price increases and serious macroeconomic effects.

  13. Twisted X-rays: incoming waveforms yielding discrete diffraction patterns for helical structures

    E-Print Network [OSTI]

    Friesecke, Gero; Jüstel, Dominik

    2015-01-01

    Conventional X-ray methods use incoming plane waves and result in discrete diffraction patterns when scattered at crystals. Here we find, by a systematic method, incoming waveforms which exhibit discrete diffraction patterns when scattered at helical structures. As examples we present simulated diffraction patterns of carbon nanotubes and tobacco mosaic virus. The new incoming waveforms, which we call twisted waves due to their geometric shape, are found theoretically as closed-form solutions to Maxwell's equations. The theory of the ensuing diffraction patterns is developed in detail. A twisted analogue of the Von Laue condition is seen to hold, with the peak locations encoding the symmetry and the helix parameters, and the peak intensities indicating the electronic structure in the unit cell. If suitable twisted X-ray sources can in the future be realized experimentally, it appears from our mathematical results that they will provide a powerful tool for directly determining the detailed atomic structure of ...

  14. Impact of the FY 2009 Building Technologies Program on United States Employment and Earned Income

    SciTech Connect (OSTI)

    Livingston, Olga V.; Scott, Michael J.; Hostick, Donna J.; Dirks, James A.; Cort, Katherine A.

    2008-06-17

    The Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) is interested in assessing the potential economic impacts of its portfolio of subprograms on national employment and income. A special purpose input-output model called ImSET is used in this study of 14 Building Technologies Program subprograms in the EERE final FY 2009 budget request to the Office of Management and Budget in February 2008. Energy savings, investments, and impacts on U.S. national employment and earned income are reported by subprogram for selected years to the year 2025. Energy savings and investments from these subprograms have the potential of creating a total of 258,000 jobs and about $3.7 billion in earned income (2007$) by the year 2025.

  15. Low-income energy policy in a restructuring electricity industry: an assessment of federal options

    SciTech Connect (OSTI)

    Baxter, L.W.

    1997-07-01

    This report identifies both the low-income energy services historically provided in the electricity industry and those services that may be affected by industry restructuring. It identifies policies that are being proposed or could be developed to address low- income electricity services in a restructured industry. It discusses potential federal policy options and identifies key policy and implementation issues that arise when considering these potential federal initiatives. To understand recent policy development at the state level, we reviewed restructuring proposals from eight states and the accompanying testimony and comments filed in restructuring proceedings in these states.

  16. Development of Energy-Efficient Housing for Low-Income Texas Residents 

    E-Print Network [OSTI]

    Haberl, J. S.; Kootin-Sanwu, V.

    1999-01-01

    The purpose of this Center for Energy and Mineral Research (CEMR) funded study is to improve the energy use in low-income housing in the State of Texas. This study aims at achieving energy-efficiency by using a combination of measured data...

  17. Evaluation of DOE's Partnership in Low-Income Residential Retrofit (PILIRR) Program

    SciTech Connect (OSTI)

    Callaway, J.W.; Lee, A.D.

    1989-05-01

    In July 1986, the US Department of Energy (DOE) awarded competitive grants to five states to conduct pilot projects to establish partnerships and use resource leveraging to stimulate support for low-income residential energy retrofits. The projects were conducted under DOE's Partnerships in Low-Income Residential Retrofit (PILIRR) Program. These projects have been monitored and analyzed through a concurrent process evaluation conducted by the Pacific Northwest Laboratory (PNL). This study reports the findings of that evaluation. The overriding goal of the PILIRR Program was to determine whether the states could stimulate support for low-income residential energy improvements from non-federal sources. The goal for the process evaluation was to conduct an assessment of the processes used by the states and the extent to which they successfully established partnerships and leveraged resources. Five states were selected to participate in the program: Florida, Iowa, Kentucky, Oklahoma and Washington. Each state proposed a different approach to promote non-federal support for low-income residential weatherization. Three of the five states--Florida, Iowa, and Washington--established partnerships that led to retrofits during the monitoring period (October 1986--October 1988). Kentucky established its partnership during the monitoring period, but did not accomplish its retrofits until after monitoring was complete. Oklahoma completed development of its marketing program and had begun marketing efforts by the end of the monitoring period. 16 refs., 7 figs., 1 tab.

  18. Energy consumption and expenditure projections by population group on the basis of the annual energy outlook 1999 forecast

    SciTech Connect (OSTI)

    Poyer, D.A.; Balsley, J.H.

    2000-01-07

    This report presents an analysis of the relative impact of the base-case scenario used in Annual Energy Outlook 1999 on different population groups. Projections of energy consumption and expenditures, as well as energy expenditure as a share of income, from 1996 to 2020 are given. The projected consumption of electricty, natural gas, distillate fuel, and liquefied petroleum gas during this period is also reported for each population group. In addition, this report compares the findings of the Annual Energy Outlook 1999 report with the 1998 report. Changes in certain indicators and information affect energy use forecasts, and these effects are analyzed and discussed.

  19. Low-income DSM Programs: Methodological approach to determining the cost-effectiveness of coordinated partnerships

    SciTech Connect (OSTI)

    Brown, M.A.; Hill, L.J.

    1994-05-01

    As governments at all levels become increasingly budget-conscious, expenditures on low-income, demand-side management (DSM) programs are being evaluated more on the basis of efficiency at the expense of equity considerations. Budgetary pressures have also caused government agencies to emphasize resource leveraging and coordination with electric and gas utilities as a means of sharing the expenses of low-income programs. The increased involvement of electric and gas utilities in coordinated low-income DSM programs, in turn, has resulted in greater emphasis on estimating program cost-effectiveness. The objective of this study is to develop a methodological approach to estimate the cost- effectiveness of coordinated low-income DSM programs, given the special features that distinguish these programs from other utility-operated DSM programs. The general approach used in this study was to (1) select six coordinated low-income DSM programs from among those currently operating across the United States, (2) examine the main features of these programs, and (3) determine the conceptual and pragmatic problems associated with estimating their cost-effectiveness. Three types of coordination between government and utility cosponsors were identified. At one extreme, local agencies operate {open_quotes}parallel{close_quotes} programs, each of which is fully funded by a single sponsor (e.g., one funded by the U.S. Department of Energy and the other by a utility). At the other extreme are highly {open_quotes}coupled{close_quotes} programs that capitalize on the unique capabilities and resources offered by each cosponsor. In these programs, agencies employ a combination of utility and government funds to deliver weatherization services as part of an integrated effort. In between are {open_quotes}supplemental{close_quotes} programs that utilize resources to supplement the agency`s government-funded weatherization, with no changes to the operation of that program.

  20. Economic evaluation of potential reuse of ORGDP equipment at Paducah GDP and Portsmouth GDP

    SciTech Connect (OSTI)

    Warren, R.C.

    1988-06-08

    The relocation of up to 36 000 and 19 00 cells of barrier to Portsmouth and Paducah can be economically justified. In addition, relocation of some compressors, control valves and other piping would be required to maximize the benefit and assure operability. Models developed to perform the analyses described herein are readily adaptable to evaluate any modifications to the economic criteria and/or cost data upon which these studies were based.

  1. Estimated population near uranium tailings

    SciTech Connect (OSTI)

    Bloomster, C.H.; Brown, D.R.; Bruno, G.A.; Craig, S.N.; Dirks, J.A.; Griffin, E.A.; Reis, J.W.; Young, J.K.

    1984-01-01

    Population studies, which took place during the months of April, May, and June 1983, were performed for 27 active and 25 inactive mill sites. For each mill site, a table showing population by radius (1/2, 1, 2, 3, 4, and 5 km) in 16 compass directions was generated. 22 references, 6 tables.

  2. MICROBIAL POPULATIONS FECAL PELLETS AND

    E-Print Network [OSTI]

    Luther, Douglas S.

    MICROBIAL POPULATIONS FECAL PELLETS AND AND BIOLU}IINESCENCEOF OCEANIC SEDII,IENTTRAP PARTICLES activities of microbial populations associated with fecal pellets col-Lecteo from oceanic zooplankton were (indicators of microbial growth and reproduction rates, respectively) were monitored in fecal pellets at time

  3. POPULATION GEOGRAPHY Instructor: Dr. Carr

    E-Print Network [OSTI]

    Lopez-Carr, David

    to Mexico's! Why? + net migration of 3 migrants/1000 vs. Mexico ­ net migration of 4/1000 #12;Why do we care: · Spatial patterns and processes · Geographers tend to study migration more than fertility and mortality: #12;HOW DOES POPULATION CHANGE? #12;Population Change = Fertility ­ Mortality +/- Migration #12;Crude

  4. Population Ecology Philip M. Dixon

    E-Print Network [OSTI]

    of populations include the mallard ducks in the Central flyway of the United States, the Daphnia laevis(t) - e(t), (2) where b(t), d(t), i(t), and e(t) are the instantaneous rates of birth, death, immigrationPopulation Ecology Philip M. Dixon Department of Statistics Iowa State University 20 December 2001

  5. The impact of forecasted energy price increases on low-income consumers

    SciTech Connect (OSTI)

    Eisenberg, Joel F. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2005-10-31

    The Department of Energy’s Energy Information Administration (EIA) recently released its short term forecast for residential energy prices for the winter of 2005-2006. The forecast indicates significant increases in fuel costs, particularly for natural gas, propane, and home heating oil, for the year ahead. In the following analysis, the Oak Ridge National Laboratory has integrated the EIA price projections with the Residential Energy Consumption Survey (RECS) for 2001 in order to project the impact of these price increases on the nation’s low-income households by primary heating fuel type, nationally and by Census Region. The statistics are intended for the use of policymakers in the Department of Energy’s Weatherization Assistance Program and elsewhere who are trying to gauge the nature and severity of the problems that will be faced by eligible low-income households during the 2006 fiscal year.

  6. Energy consumption and expenditure projections by income quintile on the basis of the Annual Energy Outlook 1997 forecast

    SciTech Connect (OSTI)

    Poyer, D.A.; Allison, T.

    1998-03-01

    This report presents an analysis of the relative impacts of the base-case scenario used in the Annual Energy Outlook 1997, published by the US Department of Energy, Energy Information Administration, on income quintile groups. Projected energy consumption and expenditures, and projected energy expenditures as a share of income, for the period 1993 to 2015 are reported. Projected consumption of electricity, natural gas, distillate fuel, and liquefied petroleum gas over this period is also reported for each income group. 33 figs., 11 tabs.

  7. Inferring population history from genealogies 

    E-Print Network [OSTI]

    Lohse, Konrad R.

    2010-01-01

    This thesis investigates a range of genealogical approaches to making quantitative inferences about the spatial and demographic history of populations with application to two insect systems: A local radiation of high ...

  8. A rationalized building system for low-income housing as a response to the issues of flexibility and participation

    E-Print Network [OSTI]

    Spinazzola, Aida

    1988-01-01

    This thesis will focus on the design of a building system intending to approach the problem of low-income housing provision in developing countries.Two concepts will be proposed as a base for the development of the building ...

  9. Youth and cities : planning with low-income youth and urban youth cultures in New York City and Paris

    E-Print Network [OSTI]

    Knorr, Lilian (Lilian M.)

    2014-01-01

    Are the cities of North America and Europe governed, built, and planned by authorities to encourage youth development or facilitate repression? Youth and Cities: Planning with Low- Income Youth and Urban Youth Cultures in ...

  10. Community Capitalism: How Housing Advocates, the Private Sector, and Government Forged New Low-Income Housing Policy, 1968–1996

    E-Print Network [OSTI]

    Erickson, David J.

    2006-01-01

    DiPasquale, “The Low-Income Housing Tax Credit: An AnalysisThe Fall and Rise Of Public Housing,” Regulation 25, no. 2 (decentralized approach to housing. Rouse founded a capacity-

  11. 2001 New York State NHTS: Travel Patterns of Special Populations

    SciTech Connect (OSTI)

    Hu, Patricia S [ORNL; Reuscher, Tim [ORNL

    2010-03-01

    Policymakers rely on transportation statistics, including data on personal travel behavior, to formulate strategic transportation policies, and to improve the safety and efficiency of the U.S. transportation system. Data on personal travel trends are needed to examine the reliability, efficiency, capacity, and flexibility of the Nation's transportation system to meet current demands and accommodate future demands; to assess the feasibility and efficiency of alternative congestion-alleviating technologies (e.g., high-speed rail, magnetically levitated trains, intelligent vehicle and highway systems); to evaluate the merits of alternative transportation investment programs; and to assess the energy-use and air-quality impacts of various policies. To address these data needs, the U.S. Department of Transportation (USDOT) initiated an effort in 1969 to collect detailed data on personal travel. The 1969 survey was the first Nationwide Personal Transportation Survey (NPTS). The survey was conducted again in 1977, 1983, 1990, 1995, and 2001. Data on daily travel were collected in 1969, 1977, 1983, 1990 and 1995. Longer-distance travel was collected in 1977 and 1995. The 2001 National Household Travel Survey (NHTS) collected both daily and longer-distance trips in one survey. The 2001 survey was sponsored by three USDOT agencies: Federal Highway Administration (FHWA), Bureau of Transportation Statistics (BTS), and National Highway Traffic Safety Administration (NHTSA). The primary objective of the survey was to collect trip-based data on the nature and characteristics of personal travel so that the relationships between the characteristics of personal travel and the demographics of the traveler can be established. Commercial and institutional travel was not part of the survey. New York State participated in the 2001 NHTS by procuring additional 12,000 sample households. These additional sample households allowed New York State to address transportation planning issues pertinent to geographic areas that are significantly smaller than what the national NHTS data allowed. The final sample size for New York State was 13,423 usable households. In this report, Oak Ridge National Laboratory (ORNL) identifies and analyzes differences, if any, in travel patterns that are attributable to demographic characteristics (e.g., gender, age, race and ethnicity), household characteristics (e.g., low income households, zero and one car households), modal characteristics and geographic location. Travel patterns of those who work at home are examined and compared to those of conventional workers, as well as those who do not work. Focus is given to trip frequency, travel by time of day, trip purpose, and mode choice. For example, included in this analysis is the mobility of the elderly population in New York State. The American society is undergoing a major demographic transformation that is resulting in a greater percentage of older individuals in the population. In addition to demographic changes, recent travel surveys show that an increasing number of older individuals are licensed to drive and that they drive more than their same age cohort did a decade ago. Cohort differences in driving are particularly apparent - not only are more of today's elderly population licensed to drive than their age cohort two decades ago, they also drive more. Equally important are the increase in immigration and in racial and cultural diversity. This report also discusses vehicle availability, socioeconomic characteristics, travel trends (e.g., miles travelled, distance driven, commute patterns), and the transportation accessibility of these populations. Specifically, this report addresses in detail the travel behavior of the following special populations: (1) the elderly, defined as those who were 65 years old or older, (2) low-income households, (3) ethnic groups and immigrants, and (4) those who worked at home.

  12. The Smell of Petroleum: Health, Insecurity, and Citizenship in "Revolutionary" Ecuador

    E-Print Network [OSTI]

    Welcome, Nicholas Scott

    2013-01-01

    Petroleum is the lynchpin of the national economy, accounting for two-fifths of the national GDP, and over half their export income.

  13. SUB-POPULATION BRAIN ATLASES

    E-Print Network [OSTI]

    Thompson, Paul

    SUB-POPULATION BRAIN ATLASES Paul Thompson PhD, Michael S. Mega MD PhD, and Arthur W. Toga PhD Laboratory of Neuro Imaging, Brain Mapping Division and Alzheimer's Disease Center Dept. of Neurology, UCLA School of Medicine, Los Angeles, CA 90095-1769 A Chapter in: Brain Mapping: The Methods (2nd Edition

  14. Population Growth February 6, 2008

    E-Print Network [OSTI]

    Mead, Jodi L.

    for all values of M and k. 3. Generate the direction fields of the logistic equation with harvesting: dy that the population of a species of fish in a certain lake is growing according to a logistic model with k = 0.3 and M intial value problem. (b) Plot the direction field and a few informative solution curves. (c) Describe

  15. Common Origin of Power-law Tails in Income Distributions and Relativistic Gases

    E-Print Network [OSTI]

    G. Modanese

    2015-09-05

    Power-law tails are ubiquitous in income distributions and in the energy distributions of diluted relativistic gases. We analyze the conceptual link between these two cases. In economic interactions fat tails arise because the richest individuals enact some protection mechanisms ("saving propensity") which allow them to put at stake, in their interactions, only a small part of their wealth. In high-energy particle collisions something similar happens, in the sense that when particles with very large energy collide with slow particles, then as a sole consequence of relativistic kinematics (mass dilation), they tend to exchange only a small part of their energy; processes like the frontal collision of two identical particles, where the exchanged energy is 100%, are very improbable, at least in a diluted gas. We thus show how in two completely different systems, one of socio-economic nature and one of physical nature, a certain feature of the binary microscopic interactions leads to the same consequence in the macroscopic distribution for the income or respectively for the energy.

  16. Hepatitis B Sero-Prevalence and Risk Behaviors Among Immigrant Men in a Population-Based Household Survey in Low-Income Neighborhoods of Northern California

    E-Print Network [OSTI]

    2010-01-01

    control of infections with hepatitis virus in correctionalL, Schmid G, et al. Hepatitis B vaccination in sexuallyReferences 1. Lee WM. Hepatitis B virus infection. The New

  17. The Impact of Carbon Control on Low-Income Household Electricity and Gasoline Expenditures

    SciTech Connect (OSTI)

    Eisenberg, Joel Fred [ORNL

    2008-06-01

    In July of 2007 The Department of Energy's (DOE's) Energy Information Administration (EIA) released its impact analysis of 'The Climate Stewardship And Innovation Act of 2007,' known as S.280. This legislation, cosponsored by Senators Joseph Lieberman and John McCain, was designed to significantly cut U.S. greenhouse gas emissions over time through a 'cap-and-trade' system, briefly described below, that would gradually but extensively reduce such emissions over many decades. S.280 is one of several proposals that have emerged in recent years to come to grips with the nation's role in causing human-induced global climate change. EIA produced an analysis of this proposal using the National Energy Modeling System (NEMS) to generate price projections for electricity and gasoline under the proposed cap-and-trade system. Oak Ridge National Laboratory integrated those price projections into a data base derived from the EIA Residential Energy Consumption Survey (RECS) for 2001 and the EIA public use files from the National Household Transportation Survey (NHTS) for 2001 to develop a preliminary assessment of impact of these types of policies on low-income consumers. ORNL will analyze the impacts of other specific proposals as EIA makes its projections for them available. The EIA price projections for electricity and gasoline under the S.280 climate change proposal, integrated with RECS and NHTS for 2001, help identify the potential effects on household electric bills and gasoline expenditures, which represent S.280's two largest direct impacts on low-income household budgets in the proposed legislation. The analysis may prove useful in understanding the needs and remedies for the distributive impacts of such policies and how these may vary based on patterns of location, housing and vehicle stock, and energy usage.

  18. Feedback between Population and Evolutionary Dynamics Determines the Fate of Social Microbial Populations

    E-Print Network [OSTI]

    Sanchez, Alvaro

    The evolutionary spread of cheater strategies can destabilize populations engaging in social cooperative behaviors, thus demonstrating that evolutionary changes can have profound implications for population dynamics. At ...

  19. Arthropod population and community dynamics in turfgrass 

    E-Print Network [OSTI]

    Wang, Yong

    1998-01-01

    Non-target arthropod and nematode populations in ographics. fungal and nematode treated bermudagrass were contrasted with populations in a chlorpyrifos and an untreated control treatment. Fifty-five arthropod families or suborder, herein referred...

  20. Left to Our Own Devices – Financing Efficiency for Small Business and Low-Income Families (2009 Environmental Defense Fund Report)

    Office of Energy Efficiency and Renewable Energy (EERE)

    There is a widely known gap between cost-effective behavior, consumption patterns and actual marketplace conditions. This engineering gap/efficiency gap is particularly the case for low-income households and small businesses, which tend to depend on older, inefficient equipment. This study identifies the limitations of current and potential of relatively new mechanisms for efficiency investment micro-financing.

  1. Effects of incoming surface wind conditions on the wake characteristics and dynamic wind loads acting on a wind turbine model

    E-Print Network [OSTI]

    Hu, Hui

    . In addition to measuring dynamic wind loads acting on the model turbine by using a force-moment sensor, a high in the incoming ABL wind with higher turbulence intensity levels. The turbulent kinetic energy and Reynolds stress://dx.doi.org/10.1063/1.4904375] I. INTRODUCTION Wind energy, as a renewable energy source, has been playing a

  2. MANDATORY ~ All Incoming House Staff are required to complete the following Healthstream modules by June 12th

    E-Print Network [OSTI]

    Kay, Mark A.

    Management & National Patient Safety Goals 20 · *LPCH modules/training ONLY for Pediatrics residents· MANDATORY ~ All Incoming House Staff are required to complete the following Healthstream modules by June 12th , 2015. · HEALTHSTREAM training: www.healthstream.com/hlc/stanford · For Assistance, Email

  3. E000308 economic development and the environment Economic development in low-income economies is initially highly resource-

    E-Print Network [OSTI]

    Coxhead, Ian

    E000308 economic development and the environment Economic development in low-income economies sources of emissions that contribute to global climate change. Economic development depends on sustained drawdowns, may affect economic development in a dynamic interaction. This feedback is hard to quantify

  4. WAIVER OF INVENTOR'S SHARE OF LICENSING INCOME Cornell University's policy on the distribution of technology transfer licensing revenues

    E-Print Network [OSTI]

    Chen, Tsuhan

    WAIVER OF INVENTOR'S SHARE OF LICENSING INCOME Cornell University's policy on the distribution faculty who are inventors or developers ("inventors") of the licensed intellectual property. Occasionally, a Cornell inventor will desire to waive the inventor's personal share of revenues. The Internal Revenue

  5. An Analysis of Low Cost, Energy Efficient, Housing for Low-income Residents of How and Humid Climates 

    E-Print Network [OSTI]

    Kootin-Sanwu, Victor

    2004-01-01

    The purpose of this research is to develop methods that will enable the reduction of owning and operating costs of low-income housing in the hot-humid climates of the U. S. The objectives include investigating various scenarios that will enable...

  6. Common Origin of Power-law Tails in Income Distributions and Relativistic Gases

    E-Print Network [OSTI]

    Modanese, G

    2015-01-01

    Power-law tails are ubiquitous in income distributions and in the energy distributions of diluted relativistic gases. We analyze the conceptual link between these two cases. In economic interactions fat tails arise because the richest individuals enact some protection mechanisms ("saving propensity") which allow them to put at stake, in their interactions, only a small part of their wealth. In high-energy particle collisions something similar happens, in the sense that when particles with very large energy collide with slow particles, then as a sole consequence of relativistic kinematics (mass dilation), they tend to exchange only a small part of their energy; processes like the frontal collision of two identical particles, where the exchanged energy is 100%, are very improbable, at least in a diluted gas. We thus show how in two completely different systems, one of socio-economic nature and one of physical nature, a certain feature of the binary microscopic interactions leads to the same consequence in the m...

  7. Weatherization assistance for low-income households: An evaluation of local program performance

    SciTech Connect (OSTI)

    Schweitzer, M.; Rayner, S.; Wolfe, A.K.; Mason, T.W.; Ragins, B.R.; Cartor, R.A.

    1987-08-01

    The US Department of Energy's Weatherization Assistance Program (WAP) funds local agencies to provide weatherization services to low-income households. This report describes the most salient features of this program, examines relationships between organization and program outcomes, and presents recommendations for the program's further development. Data were collected by written surveys administered to local weatherization agencies, a telephone survey of 38 states and eight DOE support offices, and site visits to selected local agencies. Locally controlled factors found to be significantly related to program performance include the amount of the weatherization director's time spent on program administration, the use of established client selection criteria, the frequency of evaluation of local goal attainment, and the type of weatherization crews used. Factors controlled at the state or federal levels that influence program performance include delays in state reimbursements of local agency expenditures and local flexibility in the choice of weatherization measures. Data-gathering difficulties experienced during this project indicate a need for possible improvements in goal-setting and record-keeping procedures.

  8. Systematic analysis of the incoming quark energy loss in cold nuclear matter

    E-Print Network [OSTI]

    Li-Hua Song; Chun-Gui Duan; Na Liu

    2012-06-18

    The investigation into the fast parton energy loss in cold nuclear matter is crucial for a good understanding of the parton propagation in hot-dense medium. By means of four typical sets of nuclear parton distributions and three parametrizations of quark energy loss, the parameter values in quark energy loss expressions are determined from a leading order statistical analysis of the existing experimental data on nuclear Drell-Yan differential cross section ratio as a function of the quark momentum fraction. It is found that with independence on the nuclear modification of parton distributions, the available experimental data from lower incident beam energy rule out the incident-parton momentum fraction quark energy loss. Whether the quark energy loss is linear or quadratic with the path length is not discriminated. The global fit of all selected data gives the quark energy loss per unit path length {\\alpha} = 1.21\\pm0.09 GeV/fm by using nuclear parton distribution functions determined only by means of the world data on nuclear structure function. Our result does not support the theoretical prediction: the energy loss of an outgoing quark is three times larger than that of an incoming quark approaching the nuclear medium. It is desirable that the present work can provide useful reference for the Fermilab E906/SeaQuest experiment.

  9. Integrating Photovoltaic Systems into Low-Income Housing Developments: A Case Study on the Creation of a New Residential Financing Model and Low-Income Resident Job Training Program, September 2011 (Brochure)

    SciTech Connect (OSTI)

    Dean, J.; Smith-Dreier, C.; Mekonnen, G.; Hawthorne, W.

    2011-09-01

    This case study covers the process of successfully integrating photovoltaic (PV) systems into a low-income housing development in northeast Denver, Colorado, focusing specifically on a new financing model and job training. The Northeast Denver Housing Center (NDHC), working in cooperation with Del Norte Neighborhood Development Corporation, Groundwork Denver, and the National Renewable Energy Laboratory (NREL), was able to finance the PV system installations by blending private equity funding with utility rebates, federal tax credits, and public sector funding. A grant provided by the Governor's Energy Office allowed for the creation of the new financing model. In addition, the program incorporated an innovative low-income job training program and an energy conservation incentive program.

  10. Times Series Study of Effects of Petroleum Production on GDP 

    E-Print Network [OSTI]

    Ballinger, Leslie 1991-

    2012-05-02

    development. The countries studied include: Argentina, Canada, Colombia, the United States, Mexico, Venezuela, Peru, and Indonesia. The dates of analysis are different for every country due to data reliability. This paper focuses mainly on a time series...

  11. Monthly GDP Estimates for Inter-War Britain

    E-Print Network [OSTI]

    Mitchell, James; Solomou, Solomos; Weale, Martin

    , explaining the sharp recovery in July. The impact of the coal strike of 1921, in terms of man-days lost per 17 striker and man-days lost per strike, suggest s that the strike of 1921 had effects on output similar to those of the General Strike of 1926... by these factors and the coal strike offers a further obvious explanation. However, once the strike was over the economy continue d to weaken until the end of 1921. 3.2 Economic Recovery in the 1930s Temin (1989) draws on Sargent (1983) to emphasise...

  12. GDP Jobs Direct Structure of Australian economy, employment and

    E-Print Network [OSTI]

    Pezzey, Jack

    last page for the data) #12;Australian 2020 carbon abatement cost curve Cost of abatement A$/t CO2e -50 Biomass Solar PV 3020 Abatement below businss as usual Mt CO2e Industry Buildings Forestry Power Transport

  13. Monthly and Quarterly GDP Estimates for Interwar Britain

    E-Print Network [OSTI]

    Mitchell, James; Solomou, Solomos; Weale, Martin

    coal consumption, electricity consumption, merchandise on railways, commercial motors in use, postal receipts, building activity, iron and steel for home consumption, raw cotton delivered to mills, imports of raw materials, exports British... ) as OPEC recessions in that they both followed sharp increases in oil prices which were themselves associated with oil embargoes. In the first case the oil embargo followed the war between Israel and Egypt of November 1973.9 In the second case...

  14. Income and Cost Analysis: Cooperative Cotton Gins and Cooperative Supply Associations of Texas, Season 1949-50. 

    E-Print Network [OSTI]

    Paulson, W. E.

    1955-01-01

    .237 367 337.1 Total $39.406 $3,934 $5,459 48,799 $44,755 109.0 Figure 1. Income and cost chart-totals and per bale. TABLE 7. CLASSIFICAT~ON OF COSTS OF A SPECIFIC GIN Cost item Costs influenced Common bv volume costs Management $ 6,913 Office... ---_---__-__------.---.-------------__ 6 Trucking -------------~_-_-_-------------------_- 7 Miscellaneous 7 Nonvolume Costs 7 Estimating Standard Cost .--__--_---_---_---------------- 7 Page Profit Chart .--_ _-_----__----__- --------------------------_--------- 8 Spreading...

  15. Fish Population and Behavior Revealed by Instantaneous

    E-Print Network [OSTI]

    Fish Population and Behavior Revealed by Instantaneous Continental Shelf­Scale Imaging Nicholas C-transect methods from slow-moving research vessels. These methods significantly undersample fish populations in time and space, leaving an incomplete and ambiguous record of abundance and behavior. We show that fish

  16. Life history, longevity and aging Population ecology

    E-Print Network [OSTI]

    Wilkinson, Gerald S.

    = intrinsic rate of population growth dN/dt = (b-d)N = rN "r-selected" #12;Logistic population growth Addition of a density dependent term results in logistic growth K = carrying capacity dN/dt = rN (K-N)/K "K to allocation of resources between maintenance and reproduction #12;Reproductive value · Age

  17. Populations of Galaxies Building a Galaxy

    E-Print Network [OSTI]

    Crenshaw, Michael

    hydrogen fusion), M > 100M! (star's radiation pressure exceeds gravity) (M) M Salpeter (1955) = 2.35 Total-Luminosity Relations · Initial Mass Function · Star Formation Rates · Heavy Element Enrichment · Evolution spectrum and determine predicted colors for a population of stars? · Start a population with an initial

  18. Population density of San Joaquin kit fox

    SciTech Connect (OSTI)

    McCue, P.; O'Farrell, T.P.; Kato, T.; Evans, B.G.

    1982-01-01

    Populations of the endangered San Joaquin kit fox, vulpes macrotis mutica, are known to occur on the Elk Hills Naval Petroleum Reserve No. 1. This study assess the impact of intensified petroleum exploration and production and associated human activities on kit fox population density. (ACR)

  19. Population genomics20-02-2009 Antnio Rodrigues; Bruno Santos / 59 Population Genomics

    E-Print Network [OSTI]

    Goldschmidt, Christina

    Population genomics20-02-2009 António Rodrigues; Bruno Santos / 59 Population Genomics 1 António Rodrigues (PDBC 2008) Bruno Santos (PDBC 2008) #12;Population genomics20-02-2009 António Rodrigues; Bruno Santos / 59 Contents 2 2 1000 genome project 1 Motivation and Introduction New generation sequencing

  20. Bringing good things to life : New Markets Tax Credits and the opening of low-income communities to investment, including a case study of Pittsfield, Massachusetts

    E-Print Network [OSTI]

    McGrath, Daniel J., S.M. Massachusetts Institute of Technology

    2008-01-01

    The New Markets Tax Credit (NMTC) Program is designed to promote investment and economic growth in urban and rural low-income communities across the country. Created in 2000 as one of the last acts of the Clinton Administration, ...

  1. Swap meets, flea markets, and open-air public markets : a community and economic development model for low-income and underserved neighborhoods

    E-Print Network [OSTI]

    Juarez, Jeffrey Edwin

    2011-01-01

    Swap meets, a type of public marketplace, are sites that provide low income and minority communities a place to buy and sell affordable merchandise, as well as create a regular meeting space. In particular, open-air swap ...

  2. Exploring the impacts of assets and vulnerabilities of families experiencing multidimensional poverty and income inequality on children's early cognitive, social, emotional and behavioural developmental outcomes in Scotland 

    E-Print Network [OSTI]

    Treanor, Morag

    2013-11-27

    Living in poverty and persistent low income has detrimental impacts on many facets of the lives of parents and children. During the early years of the new millennium this was of primary concern to the Scottish and UK ...

  3. Housing Diversity and Consolidation in Low-Income Colonias: Patterns of House Form and Household Arrangements in Colonias of the US-Mexico Border 

    E-Print Network [OSTI]

    Reimers-Arias, Carlos Alberto

    2010-10-12

    Colonias are low-income settlements on the US-Mexico border characterized by poor infrastructure, minimum services, and an active housing construction with a high self-help and self-management component. Housing in colonias ...

  4. Essays on Applied Economics and Econometrics: Decadal Climate Variability Impacts on Cropping and Sugar-sweetened Beverage Demand of Low-income 

    E-Print Network [OSTI]

    Jithitikulchai, Theepakorn

    2014-12-10

    This dissertation examines the economic impacts of ocean-related climate variability on U.S. crops and the effect sweetened beverage taxes would have on beverage consumption among low income food assistance program ...

  5. Estimating Traveler Populations at Airport and Cruise Terminals for Population Distribution and Dynamics

    SciTech Connect (OSTI)

    Jochem, Warren C; Sims, Kelly M; Bright, Eddie A; Urban, Marie L; Rose, Amy N; Coleman, Phil R; Bhaduri, Budhendra L

    2013-01-01

    In recent years, uses of high-resolution population distribution databases are increasing steadily for environmental, socioeconomic, public health, and disaster-related research and operations. With the development of daytime population distribution, temporal resolution of such databases has been improved. However, the lack of incorporation of transitional population, namely business and leisure travelers, leaves a significant population unaccounted for within the critical infrastructure networks, such as at transportation hubs. This paper presents two general methodologies for estimating passenger populations in airport and cruise port terminals at a high temporal resolution which can be incorporated into existing population distribution models. The methodologies are geographically scalable and are based on, and demonstrate how, two different transportation hubs with disparate temporal population dynamics can be modeled utilizing publicly available databases including novel data sources of flight activity from the Internet which are updated in near-real time. The airport population estimation model shows great potential for rapid implementation for a large collection of airports on a national scale, and the results suggest reasonable accuracy in the estimated passenger traffic. By incorporating population dynamics at high temporal resolutions into population distribution models, we hope to improve the estimates of populations exposed to or at risk to disasters, thereby improving emergency planning and response, and leading to more informed policy decisions.

  6. A Decade of Population Change in Texas. 

    E-Print Network [OSTI]

    Skrabanek, R. L.

    1963-01-01

    .4 36.4 27.8 19.7 24.9 10.1 20.2 24.2 Source: U.S. Bureau of Census, PC (1) 45A-Texas, Table 1. only three states, California, Florida and New York. The state had 5.1 percent of the nation's people in 1950 and 5.3 percent in 1960. Texas ranks... sixth in comparison with other states in total population, the same position it held in 1950. States having larger population in 1960 were New York, California, Pennsylvania, Illinois and Ohio. Population Density Although Texas ranks sixth in total...

  7. Accounting for population variation in targeted proteomics

    SciTech Connect (OSTI)

    Fujimoto, Grant M.; Monroe, Matthew E.; Rodriguez, Larissa M.; Wu, Chaochao; MacLean, Brendan; Smith, Richard D.; MacCoss, Michael; Payne, Samuel H.

    2014-01-03

    Individual proteomes typically differ from the reference human proteome at ~10,000 single amino acid variants. When viewed at the population scale, this individual variation results in a wide variety of protein sequences. In targeted proteomics experiments, such variability would confound accurate protein quantification. To facilitate researchers in identifying target peptides with high variability within the human population we have created the Population Variation plug-in for Skyline, which provides easy access to the polymorphisms stored in dbSNP. Given a set of peptides, the tool reports minor allele frequency for common polymorphisms. We highlight the importance of considering genetic variation by applying the tool to public datasets.

  8. Hanford Site Regional Population - 2010 Census

    SciTech Connect (OSTI)

    Hamilton, Erin L.; Snyder, Sandra F.

    2011-08-12

    The U.S. Department of Energy conducts radiological operations in south-central Washington State. Population dose estimates must be performed to provide a measure of the impact from site radiological releases. Results of the U.S. 2010 Census were used to determine counts and distributions for the residential population located within 50-miles of several operating areas of the Hanford Site. Year 2010 was the first census year that a 50-mile population of a Hanford Site operational area exceeded the half-million mark.

  9. Conditions when hybridization might predispose populations

    E-Print Network [OSTI]

    COMMENTARY Conditions when hybridization might predispose populations for adaptive radiation O (Sch- warzer et al., 2012), perhaps just as a consequence of many young species in geographical et al., 2011; Genner & Turner, 2012). Whether these species radiations happen despite hybridization

  10. The Population Structure of Ten Newfoundland Outports

    E-Print Network [OSTI]

    Martin, L. J.; Crawford, Michael H.; Koertvelyessy, T. A.; Keeping, D.; Collins, M.; Huntsman, R.

    2000-12-01

    mean per-locus heterozygosity on genetic distance from the gene frequency centroid to identify the most isolated populations. On the basis of this information, the three outports of Seal Cove, Island Harbor, and Tilting were found to be genetically...

  11. ORIGINAL PAPER Morphological differentiation among populations

    E-Print Network [OSTI]

    Langerhans, Brian

    vertebral column). We investigated inter-population variation in survival rate, abundance of predators presacral vertebral column, and narrower head in sites with increased abundance of spiders and snakes

  12. Neoclassical formulations of optimum population theory 

    E-Print Network [OSTI]

    Davis, Glenn Anthony

    1971-01-01

    population concept and concludes wi. th an analysis of its modern-day version. There is widespread belief that this concept msy have originated from the so-called ulawu of secular diminishing returns as formulated by Ricardo and West. However... on the other, would be inadequate. D. P. Mukerji has noted that the development of economic thought contained within itself a motive power for the drive towards the optimum [25, 155]. Rudiments of the ides of optimum population have been detected...

  13. The Impact of Wind Development on County-Level Income and Employment: A Review of Methods and an Empirical Analysis

    SciTech Connect (OSTI)

    Eric Lantz

    2012-09-21

    To gain an understanding of the long-term county-level impacts from a large sample of wind power projects and to understand the potential significance of methodological criticisms, the U.S. Department of Agriculture, the Lawrence Berkeley National Laboratory, and the National Renewable Energy Laboratory recently joined efforts to complete a first-of-its-kind study that quantifies the annual impact on county-level personal income resulting from wind power installations in nearly 130 counties across 12 states. The results of this study as well as a comparison with the prior county-level estimates generated from input-output models, are summarized in the fact sheet.

  14. Consumer survey data as a basis for the derivation of retail price and income elasticities of demand 

    E-Print Network [OSTI]

    Wilson, Winston Lewis

    1969-01-01

    at Yiichigan State University computed 1ncome and price elastic1t1es of demand for food 1n general on the basis of a mailed quest1onnai re sent to 2, 103 fam1lies. ho specific price changes were employed. He asked respondents to 1ndicate their response to a...CONSUMER SURVEY DATA AS A BASIS FOR THE DERIVATION OF RETAIL PRICE AND INCOME ELASTICITIES OF DEMAND A Thesis by WJIlJSTOI'J LE1JIS WILSON Subm. 'tted to the Graduate College of Texas AGI1 University in partial fulfillment of the requirement...

  15. Environmental Impacts of Wind Power Development on the Population...

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

    Environmental Impacts of Wind Power Development on the Population Biology of Greater Prairie-Chickens Environmental Impacts of Wind Power Development on the Population Biology of...

  16. Fact #661: February 7, 2011 Population Density | Department of...

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

    states, the population is generally less dense, with the exceptions being California, Hawaii, and Washington. Every state except Michigan experienced increased population density...

  17. How should environmental stress affect the population dynamics of disease?

    E-Print Network [OSTI]

    Holt, Robert D.

    in pollution (Khan 1990), malnutrition (Beck & Levander 2000) and thermal stress from climate change (Harvell and disease in natural populations. Keywords Disease, dynamics, host, infectious, model, pollution, population

  18. Population dynamics of the Concho water snake 

    E-Print Network [OSTI]

    Mueller, James Michael

    1990-01-01

    Recruitment B. SE Capture Probability SE 15 Sep 1987 8 Oct 1987 23 Apr 1988 13 Aug 1988 22 May 1989 19 Jul 1989 14-16 Sep 6-19 Oct 13 Apr-4 May 31 Aug. 27 Sep 17 May-15 Jun 29 Jun-9 Aug 21. 0 15. 7 54. 7 48. 1 15 0 e*** 2/ 0 **** **** ee*e... **a*** Table 12. Jolly-Saber estimates and standard errors for the 1988 sge class of e Concho water snake population st Egan Dairy on the Colorado River, Texas. Population Size Survival Probability Recruitment Capture Probability 31 Aug 1988...

  19. Short and Long-Term Perspectives: The Impact on Low-Income Consumers of Forecasted Energy Price Increases in 2008 and A Cap & Trade Carbon Policy in 2030

    SciTech Connect (OSTI)

    Eisenberg, Joel Fred [ORNL

    2008-01-01

    The Department of Energy's Energy Information Administration (EIA) recently released its short-term forecast for residential energy prices for the winter of 2007-2008. The forecast indicates increases in costs for low-income consumers in the year ahead, particularly for those using fuel oil to heat their homes. In the following analysis, the Oak Ridge National Laboratory has integrated the EIA price projections with the Residential Energy Consumption Survey (RECS) for 2001 in order to project the impact of these price increases on the nation's low-income households by primary heating fuel type, nationally and by Census Region. The report provides an update of bill estimates provided in a previous study, "The Impact Of Forecasted Energy Price Increases On Low-Income Consumers" (Eisenberg, 2005). The statistics are intended for use by policymakers in the Department of Energy's Weatherization Assistance Program and elsewhere who are trying to gauge the nature and severity of the problems that will be faced by eligible low-income households during the 2008 fiscal year. In addition to providing expenditure forecasts for the year immediately ahead, this analysis uses a similar methodology to give policy makers some insight into one of the major policy debates that will impact low-income energy expenditures well into the middle decades of this century and beyond. There is now considerable discussion of employing a cap-and-trade mechanism to first limit and then reduce U.S. emissions of carbon into the atmosphere in order to combat the long-range threat of human-induced climate change. The Energy Information Administration has provided an analysis of projected energy prices in the years 2020 and 2030 for one such cap-and-trade carbon reduction proposal that, when integrated with the RECS 2001 database, provides estimates of how low-income households will be impacted over the long term by such a carbon reduction policy.

  20. Contributed Paper Population Consequences of Environmental Sex

    E-Print Network [OSTI]

    Cotton, Sam

    population sizes considerably. This may limit any evolutionary response to the deleterious effects of ESR sexuales y el crecimiento y persistencia de la poblaci´on despu´es de la exposici´on a fuerzas ambientales feminizaci´on moderada fue ben´efica para el crecimiento poblacional en la ausencia de efectos notables sobre

  1. Competitive niche: Way of population regulation

    E-Print Network [OSTI]

    Meszéna, Géza

    1 / 27 Competitive niche: Way of population regulation G´eza Mesz´ena1, Andr´as Szil´agyi1, Kalle of coexistence Theory Regulating loop Results Examples Spatial segregation Functional & spatial segregation Regulating loop y Results Examples Conclusions 7 / 27 #12;Regulating loop Introduction Theory y Regulating

  2. Population genetic analyses suggest that the Eucalyptus

    E-Print Network [OSTI]

    Population genetic analyses suggest that the Eucalyptus fungal pathogen Ceratocystis fimbriata has , Brenda D. Wingfield a , Gilbert N. Kamgan b and Michael J. Wingfield a Introduction Eucalyptus species, with Eucalyptus comprising about 40% of the total area.3 This is an important crop that sustains large pulp, sawn

  3. Stoichiometry and population dynamics Tom Andersen,1

    E-Print Network [OSTI]

    Elser, Jim

    development, theoretical population biology has built on variants of the Lotka­Volterra equations stable states under stoichiometric constraints, for negative effects of solar radiation on herbivores via), dealing with the balance of energy and chemical elements in ecological interactions and especially

  4. Population Composition of an Exploited Hawaiian Fishery 

    E-Print Network [OSTI]

    Cockett, Patricia Malamalama

    2015-05-26

    the islands of Nihoa, Kaua‘i, Maui, O‘ahu, and Hawai‘i to test for relationships between genetic diversity, population size, island age, and harvest pressure. Global estimates of genetic differentiation among islands are greater than those estimated with mt...

  5. How do SNP ascertainment schemes and population demographics affect inferences about population history?

    E-Print Network [OSTI]

    McTavish, Emily Jane; Hills, David M.

    2015-03-17

    of population genetic parameters using empirical and simulated data representing the three major continental groups of cattle: European, African, and Indian. We simulated data under three demographic models. Each simulated data set was subjected to three...

  6. HLA Genes in the Chuvashian Population from European Russia: Admixture of Central European and Mediterranean Populations

    E-Print Network [OSTI]

    Arnaiz-Villena, Antonio; Martinez-Laso, Jorge; Moscoso, Juan; Livshits, Gregory; Zamora, Jorge; Gomez-Casado, Eduardo; Silvera-Redondo, Carlos; Melvin, Kristin L.; Crawford, Michael H.

    2003-06-01

    HLA alleles have been determined for the first time in individuals from the Chuvashian population by DNA typing and sequencing. HLA-A, -B, -DR, and -DQ allele frequencies and extended haplotypes have also been determined, ...

  7. The Genetic Structure of the Kuwaiti Population: mtDNA Inter- and Intra-population Variation

    E-Print Network [OSTI]

    Theyab, Jasem; Al-Bustan, Suzanne; Crawford, Michael H.

    2012-08-01

    it to their neighboring populations. These subpopulations were tested for genetic homogeneity and shown to be heterogeneous. Restriction fragment length polymorphism (RFLP) and mtDNA sequencing analyses of HVRI were used to reconstruct the genetic structure of Kuwait...

  8. Research Assistantship Guidelines: Scholarship versus Salary Employment Income To assist grantees in deciding whether to pay a student research assistant a scholarship or salary we

    E-Print Network [OSTI]

    Research Assistantship Guidelines: Scholarship versus Salary Employment Income To assist grantees in deciding whether to pay a student research assistant a scholarship or salary we have prepared the following consider the following questions. Frequently Asked Questions Scholarship (orange form) Salary (green form

  9. UNIVERSITY OF UTAH INCOME ACCOUNTING/ STUDENT LOAN SERVICES SSB 165 801-585-5686 Merchant Account Close Form Fax to 801-581-4277

    E-Print Network [OSTI]

    Clayton, Dale H.

    UNIVERSITY OF UTAH INCOME ACCOUNTING/ STUDENT LOAN SERVICES SSB 165 801-585-5686 Merchant Account or Incomplete forms may delay processing. Request Date: Name of Account: Contact: Department Name (if different #: American Express Merchant #: Reason for Closure: Date of Last Batch: Do you have other accounts that should

  10. UNIVERSITY OF UTAH INCOME ACCOUNTING/ STUDENT LOAN SERVICES SSB 165 801-585-5686 Merchant Application Fax to 801-581-4277

    E-Print Network [OSTI]

    Clayton, Dale H.

    UNIVERSITY OF UTAH INCOME ACCOUNTING/ STUDENT LOAN SERVICES SSB 165 801-585-5686 10/11 Merchant be accepting donations with your merchant account? Yes No If no, do you anticipate taking donations Party" to submit w/ this application. Wells Fargo Checking Account for Deposits: Chartfield to debit

  11. Palomar fears that the decline in public funding and the need for own income can lead universities into a public-private partnership

    E-Print Network [OSTI]

    Escolano, Francisco

    Palomar fears that the decline in public funding and the need for own income can lead universities of Alicante President Manuel Palomar closed the 2013-14 academic year in a ceremony held at the auditorium capacity, Palomar claimed, once again, a framework of adequate and stable funding without forgetting

  12. Emergent vortices in populations of colloidal rollers

    E-Print Network [OSTI]

    Antoine Bricard; Jean-Baptiste-Caussin; Debasish Das; Charles Savoie; Vijayakumar Chikkadi; Kyohei Shitara; Oleksandr Chepizhko; Fernando Peruani; David Saintillan; Denis Bartolo

    2015-06-26

    Coherent vortical motion has been reported in a wide variety of populations including living organisms (bacteria, fishes, human crowds) and synthetic active matter (shaken grains, mixtures of biopolymers), yet a unified description of the formation and structure of this pattern remains lacking. Here we report the self-organization of motile colloids into a macroscopic steadily rotating vortex. Combining physical experiments and numerical simulations, we elucidate this collective behavior. We demonstrate that the emergent-vortex structure lives on the verge of a phase separation, and single out the very constituents responsible for this state of polar active matter. Building on this observation, we establish a continuum theory and lay out a strong foundation for the description of vortical collective motion in a broad class of motile populations constrained by geometrical boundaries.

  13. Bacterial Population Genetics in a Forensic Context

    SciTech Connect (OSTI)

    Velsko, S P

    2009-11-02

    This report addresses the recent Department of Homeland Security (DHS) call for a Phase I study to (1) assess gaps in the forensically relevant knowledge about the population genetics of eight bacterial agents of concern, (2) formulate a technical roadmap to address those gaps, and (3) identify new bioinformatics tools that would be necessary to analyze and interpret population genetic data in a forensic context. The eight organisms that were studied are B. anthracis, Y. pestis, F. tularensis, Brucella spp., E. coli O157/H7, Burkholderia mallei, Burkholderia pseudomallei, and C. botulinum. Our study focused on the use of bacterial population genetics by forensic investigators to test hypotheses about the possible provenance of an agent that was used in a crime or act of terrorism. Just as human population genetics underpins the calculations of match probabilities for human DNA evidence, bacterial population genetics determines the level of support that microbial DNA evidence provides for or against certain well-defined hypotheses about the origins of an infecting strain. Our key findings are: (1) Bacterial population genetics is critical for answering certain types of questions in a probabilistic manner, akin (but not identical) to 'match probabilities' in DNA forensics. (2) A basic theoretical framework for calculating likelihood ratios or posterior probabilities for forensic hypotheses based on microbial genetic comparisons has been formulated. This 'inference-on-networks' framework has deep but simple connections to the population genetics of mtDNA and Y-STRs in human DNA forensics. (3) The 'phylogeographic' approach to identifying microbial sources is not an adequate basis for understanding bacterial population genetics in a forensic context, and has limited utility, even for generating 'leads' with respect to strain origin. (4) A collection of genotyped isolates obtained opportunistically from international locations augmented by phylogenetic representations of relatedness will not and enzootic outbreaks noted through international outbreak surveillance systems, and 'representative' genetic sequences from each outbreak. (5) Interpretation of genetic comparisons between an attack strain and reference strains requires a model for the network structure of maintenance foci, enzootic outbreaks, and human outbreaks of that disease, coupled with estimates of mutational rate constants. Validation of the model requires a set of sequences from exemplary outbreaks and laboratory data on mutation rates during animal passage. The necessary number of isolates in each validation set is determined by disease transmission network theory, and is based on the 'network diameter' of the outbreak. (6) The 8 bacteria in this study can be classified into 4 categories based on the complexity of the transmission network structure of their natural maintenance foci and their outbreaks, both enzootic and zoonotic. (7) For B. anthracis, Y. pestis, E. coli O157, and Brucella melitensis, and their primary natural animal hosts, most of the fundamental parameters needed for modeling genetic change within natural host or human transmission networks have been determined or can be estimated from existing field and laboratory studies. (8) For Burkholderia mallei, plausible approaches to transmission network models exist, but much of the fundamental parameterization does not. In addition, a validated high-resolution typing system for characterizing genetic change within outbreaks or foci has not yet been demonstrated, although a candidate system exists. (9) For Francisella tularensis, the increased complexity of the transmission network and unresolved questions about maintenance and transmission suggest that it will be more complex and difficult to develop useful models based on currently available data. (10) For Burkholderia pseudomallei and Clostridium botulinum, the transmission and maintenance networks involve complex soil communities and metapopulations about which very little is known. It is not clear that these pathogens can be brought into the in

  14. Obstacle to populating the string theory landscape

    SciTech Connect (OSTI)

    Johnson, Matthew C; Larfors, Magdalena

    2008-12-15

    We construct domain walls and instantons in a class of models with coupled scalar fields, determining, in agreement with previous studies, that many such solutions contain naked timelike singularities. Vacuum bubble solutions of this type do not contain a region of true vacuum, obstructing the ability of eternal inflation to populate other vacua. We determine a criterion that potentials must satisfy to avoid the existence of such singularities and show that many domain wall solutions in type IIB string theory are singular.

  15. Presented by LandScan Population Research

    E-Print Network [OSTI]

    by UT-Battelle for the U.S. Department of Energy Bhaduri_LandScan_SC10 Kosovo Refugee Crisis 1998 May 25 of Energy Bhaduri_LandScan_SC10 What is LandScan? Population distribution model, database, and tool people are located #12;3 Managed by UT-Battelle for the U.S. Department of Energy Bhaduri_LandScan_SC10

  16. Comparing Two Population Proportions March 4, 2010

    E-Print Network [OSTI]

    Lega, Joceline

    Comparing Two Population Proportions March 4, 2010 In this worksheet, we will test whether or not the proportions of blue M&M's and red M&M's in a random package are the same. Before beginning, do you think&M's, this is n1. Count the total number of red M&M's and compute the proportion. This is p1. n1 = p1 = 3. Open

  17. Stellar populations in the Phoenix dwarf galaxy

    E-Print Network [OSTI]

    Enrico V. Held; Ivo Saviane; Yazan Momany

    1999-03-01

    We have obtained deep BVI CCD photometry of Phoenix, a galaxy considered a transition case between dwarf spheroidal and dwarf irregular galaxies. A comparison of our data with the RGBs of Galactic globular clusters gives a mean metal abundance [Fe/H] = -1.81+/-0.10 dex. The presence of an intrinsic color dispersion in the upper red RGB suggests an abundance range of about 0.5 dex, although a range in age may also affect the RGB width. For the first time, a HB has been revealed at V~23.8. The HB is predominantly red yet moderately extended to the blue, which indicates the presence of a significant population with age comparable to that of old halo GGCs. This HB morphology in a metal-poor system indicates a mild "second parameter" effect. From the mean level of the HB we derived a true distance modulus 23.21+/-0.08, in good agreement with the distance modulus 23.04+/-0.07 estimated from the cutoff of the RGB at I~23.1. We find a radial gradient in the HB morphology, and our CMDs show a small number of stars above the RGB tip, that most likely are AGB stars of an intermediate age population. Their number indicates that the fraction of intermediate age population in Phoenix is approximately 30-40%. A young stellar population is definitely present in Phoenix, consistent with a star formation episode started at least 0.6 Gyr ago, up to 1x10^{8} yr ago. Both young stars and AGB stars are centrally concentrated, which indicates that recent star formation preferentially occurred in the inner galaxy regions. In many respects, Phoenix appears not dissimilar from dwarf spheroidal galaxies in the Local Group.

  18. Improving Healthcare for Populations: Building Smart and Integrated Remote Health Monitoring Systems

    E-Print Network [OSTI]

    Alshurafa, Nabil

    2015-01-01

    for Populations: Building Smart and Integrated Remote Healthfor Populations: Building Smart and Integrated Remote Health

  19. Genetic diversity and population structure of disjunct Newfoundland and central Ontario

    E-Print Network [OSTI]

    Innes, David J.

    Genetic diversity and population structure of disjunct Newfoundland and central Ontario populations geographical range in Newfoundland for comparison with three populations from its central range in Ontario populations examined. The Newfoundland populations were as genetically variable as those from Ontario

  20. Linking Dynamical and Population Genetic Models of Persistent Viral Infection

    E-Print Network [OSTI]

    Kelly, John K.; Williamson, Scott; Orive, Maria E.; Smith, Marilyn S.; Holt, Robert D.

    2003-07-01

    This article develops a theoretical framework to link dynamical and population genetic models of persistent viral infection. This linkage is useful because, while the dynamical and population genetic theories have developed ...

  1. Tailored Marketing for Under-represented Population Segments...

    Energy Savers [EERE]

    Tailored Marketing for Under-represented Population Segments (201) Tailored Marketing for Under-represented Population Segments (201) August 13, 2015 3:00PM to 4:3...

  2. Population dynamics and management of free-roaming cats 

    E-Print Network [OSTI]

    Hill, Paige McGee

    2006-08-16

    (Felis catus) populations. Thus, some information is repeated among chapters (i.e., problem definition, study area description). 3 CHAPTER II POPULATION DYNAMICS OF FREE-ROAMING CATS SYNOPSIS Free-roaming cats impact wildlife worldwide through...

  3. Size Dependent Population Dynamics of Microtus Ochrogaster

    E-Print Network [OSTI]

    Sauer, John R.; Slade, Norman A.

    1986-06-01

    stream_size 20190 stream_content_type text/plain stream_name slade_american_naturalist.pdf.txt stream_source_info slade_american_naturalist.pdf.txt Content-Encoding UTF-8 Content-Type text/plain; charset=UTF-8 Vol. 127... therefore could make no direct comparison of age- and mass-based methods (such as the analysis in Werner and Caswell 1977 of a population of teasel, Dipsacus sylvestris Huds.). Subsequent to our analysis of voles, we com­ pared age- and mass...

  4. RESEARCH ARTICLE Population structure, dispersal and colonization history

    E-Print Network [OSTI]

    the population structure of the bumblebee Bombus hortorum in a model island system, the Western Isles of Scotland

  5. Review of water, lighting, and cooling energy efficiency measures for low-income homes located in warm climates

    SciTech Connect (OSTI)

    Martin, M.A.; Gettings, M.B.

    1998-02-01

    In support of the U.S. Department of Energy`s Weatherization Assistance Program, Oak Ridge National Laboratory has performed a literature review of weatherization measures applicable for homes located in warm climate regions. Sources for this information included: (1) documented engineering estimates, (2) vendor information, (3) reported performance from research and field tests, and (4) direct discussions with researchers, vendors, and field reporters. Estimated savings are extrapolated from reported energy savings and applied to the end-use energy consumption for low-income homes reported by the Energy Information Administration. Additionally, installation costs, savings-to-investment ratios, and parameters indicating performance sensitivity to issues such as occupancy, construction, client education, and maintenance requirements are presented. The report is comprised of two sections: (1) an overview of measure performance, and (2) an appendix. The overview of measures is in a tabular format, which allows for quick reference. More detailed discussions and references for each measure are presented in the Appendix and it is highly recommended that these be reviewed prior to measure selection.

  6. Design and implementation of multi-asset funds in India

    E-Print Network [OSTI]

    Singh, Yuvraj

    2011-01-01

    India, over the past decade, has steadily emerged as a center of attractive investment opportunities, owing to high GDP growth rates and rising levels of per capita income. Asset management in India is going through a ...

  7. The reionization of galactic satellite populations

    SciTech Connect (OSTI)

    Ocvirk, P.; Gillet, N.; Aubert, D.; Chardin, J. [Observatoire Astronomique de Strasbourg, Université de Strasbourg, CNRS UMR 7550, 11 rue de l'Université, F-67000 Strasbourg (France); Knebe, A.; Yepes, G. [Grupo de Astrofísica, Departamento de Fisica Teorica, Modulo C-8, Universidad Autónoma de Madrid, Cantoblanco E-280049 (Spain); Libeskind, N.; Gottlöber, S. [Leibniz-Institute für Astrophysik Potsdam (AIP), An der Sternwarte 16, D-14482 Potsdam (Germany); Hoffman, Y. [Racah Institute of Physics, Hebrew University, Jerusalem 91904 (Israel)

    2014-10-10

    We use high-resolution simulations of the formation of the local group, post-processed by a radiative transfer code for UV photons, to investigate the reionization of the satellite populations of an isolated Milky Way-M31 galaxy pair in a variety of scenarios. We use an improved version of ATON which includes a simple recipe for radiative feedback. In our baseline models, reionization is initiated by low-mass, radiatively regulated halos at high redshift, until more massive halos appear, which then dominate and complete the reionization process. We investigate the relation between reionization history and present-day positions of the satellite population. We find that the average reionization redshift (z {sub r}) of satellites is higher near galaxy centers (MW and M31). This is due to the inside out reionization patterns imprinted by massive halos within the progenitor during the epoch of reionization, which end up forming the center of the galaxy. Due to incomplete dynamical mixing during galaxy assembly, these early patterns survive to present day, resulting in a clear radial gradient in the average satellite reionization redshift, up to the virial radius of MW and M31 and beyond. In the lowest emissivity scenario, the outer satellites are reionized about 180 Myr later than the inner satellites. This delay decreases with increasing source model emissivity, or in the case of external reionization by Virgo or M31, because reionization occurs faster overall and becomes spatially quasi-uniform at the highest emissivity.

  8. A Population Model for the Academic Ecosystem

    E-Print Network [OSTI]

    Wu, Yan; Chiu, Dah Ming

    2015-01-01

    In recent times, the academic ecosystem has seen a tremendous growth in number of authors and publications. While most temporal studies in this area focus on evolution of co-author and citation network structure, this systemic inflation has received very little attention. In this paper, we address this issue by proposing a population model for academia, derived from publication records in the Computer Science domain. We use a generalized branching process as an overarching framework, which enables us to describe the evolution and composition of the research community in a systematic manner. Further, the observed patterns allow us to shed light on researchers' lifecycle encompassing arrival, academic life expectancy, activity, productivity and offspring distribution in the ecosystem. We believe such a study will help develop better bibliometric indices which account for the inflation, and also provide insights into sustainable and efficient resource management for academia.

  9. Old stellar populations in distant radio galaxies

    E-Print Network [OSTI]

    James Dunlop

    1998-01-13

    I describe the current status of our attempts to determine the age of the oldest known stellar populations at high redshift, in the red mJy radio galaxies 53W091 ($z = 1.55$) and 53W069 ($z = 1.43$). During the past year the original conclusion of Dunlop et al. (1996) - that 53W091 is $>3$ Gyr old - has been questioned from two, basically orthogonal directions. First, reports that the near-infrared light from 53W091 is highly polarized have cast some doubt on whether its red colour is genuinely due to an old population of stars. Second, assuming that all the light is indeed due to stars, it has been claimed that 53W091 is in fact only 1-2 Gyr old. Here I present a preliminary analysis of new infrared polarimetric observations of 53W091 which show that the first of these criticisms can be rejected with very high confidence. I then explore why different modellers have derived different ages for 53W091, and present new model fits to the spectrum of 53W069 which demonstrate that different spectral synthesis codes are certainly in good agreement that this galaxy is 3-4 Gyr old. Finally I present a preliminary analysis of the morphologies and scale-lengths of 53W091 and 53W069 as derived from new I-band WFPC2 HST images, and compare the results with those for 3CR galaxies at comparable redshifts. I conclude that the scalelengths and luminosities of radio galaxies at $z \\simeq 1.5$ appear to scale together as would be predicted from the Kormendy relation for low-redshift elliptical galaxies.

  10. Behavioral Aspects in Simulating the Future US Building Energy Demand

    E-Print Network [OSTI]

    Stadler, Michael

    2011-01-01

    increase to parameter Natural gas price Electricity priceparameter GDP Population Natural gas price Electricity pricethe elasticities of Natural gas price this Electricity price

  11. Design and Evaluation of a Net Zero Energy Low-Income Residential Housing Development in Lafayette, Colorado

    SciTech Connect (OSTI)

    Dean, J.; VanGeet, O.; Simkus, S.; Eastment, M.

    2012-03-01

    This report outlines the lessons learned and sub-metered energy performance of an ultra low energy single family ranch home and duplex unit, called the Paradigm Pilot Project and presents the final design recommendations for a 153-unit net zero energy residential development called the Josephine Commons Project. Affordable housing development authorities throughout the United States continually struggle to find the most cost-effective pathway to provide quality, durable, and sustainable housing. The challenge for these authorities is to achieve the mission of delivering affordable housing at the lowest cost per square foot in environments that may be rural, urban, suburban, or within a designated redevelopment district. With the challenges the U.S. faces regarding energy, the environmental impacts of consumer use of fossil fuels and the increased focus on reducing greenhouse gas emissions, housing authorities are pursuing the goal of constructing affordable, energy efficient and sustainable housing at the lowest life-cycle cost of ownership. This report outlines the lessons learned and sub-metered energy performance of an ultra-low-energy single family ranch home and duplex unit, called the Paradigm Pilot Project and presents the final design recommendations for a 153-unit net zero energy residential development called the Josephine Commons Project. In addition to describing the results of the performance monitoring from the pilot project, this paper describes the recommended design process of (1) setting performance goals for energy efficiency and renewable energy on a life-cycle cost basis, (2) using an integrated, whole building design approach, and (3) incorporating systems-built housing, a green jobs training program, and renewable energy technologies into a replicable high performance, low-income housing project development model.

  12. Texas Field Experiment Results: Performance of the Weatherization Assistance Program in Hot-Climate, Low-Income Homes

    SciTech Connect (OSTI)

    McCold, Lance Neil [ORNL; Goeltz, Rick [ORNL; Ternes, Mark P [ORNL; Berry, Linda G [ORNL

    2008-04-01

    A field test involving 35 houses was performed in Texas between 2000 and 2003 to study the response of low-income homes in hot climates to weatherization performed as part of the U.S Department of Energy Weatherization Assistance Program and to investigate certain methods to improve weatherization performance. The study found that improved Program designs and the use of advanced energy audits resulted in better weatherization measures being installed (use of blower doors to guide the infiltration work, more frequent installation of attic insulation, and installation of wall insulation) in the study homes, improved space-heating savings performance compared to the Program as implemented in the hot climates in 1989, and more comfortable indoor temperatures. Two key policy dilemmas for Texas and other hot-climate states were highlighted by the study; namely, how to balance expenditures between installing cost-effective weatherization measures and performing health, safety, and repair items, and that health, safety, and repair items can have an adverse impact on energy savings, which further complicates the weatherization decision process. Several occupant and equipment-related behaviors were observed in the field test homes that help explain why audits may over predict energy consumptions and savings and why air-conditioning electricity savings are difficult to measure. Based on this study, it is recommended that states in hot climates be encouraged to select from an expanded list of measures using advanced audits or other techniques, and further studies examining the benefits obtained from air conditioner measures should be performed. In addition, guidelines should be developed for the hot-climate states on how to (a) balance the objectives of saving energy, improving health and safety, and addressing repair issues, and (b) select repair items.

  13. INCOME PLANNING roundtable discussion

    E-Print Network [OSTI]

    Salisbury, Thomas S.

    advisor business model, and what investment firms and product manufacturers must do in order to support advisors with the impending boom of retired client needs. #12;healthcare system is only in part due ADVISORS AND THEIR CLIENTS EARL BEDERMAN Investor Economics DOUG CONICK Manulife Investments DAN RICHARDS

  14. Detailed Income Statement Descriptions

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

    Title* Program Description 5 of 12 maintenance, and construction of BPA's transmission system. RESEARCH & DEVELOPMENT Conducts research focused on technologies related to...

  15. Low Income Efficiency

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJesse BergkampCentermillion to localPartnership will aidLSMCE PartnersLove

  16. Low Income Workgroup

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACTThousand CubicResourcelogoFeet)Low Energy NeutrinoNovember 6,

  17. Low-Income Weatherization

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACTThousand CubicResourcelogoFeet)LowCycle-Fatigue Behavior of

  18. The role that Carbon Conversations, as a model of deliberative workshops, can play in increasing carbon literacy with a group of low-income social housing tenants living in Glasgow 

    E-Print Network [OSTI]

    Fifield, Shivali

    2014-10-13

    This paper considers the role that Carbon Conversations, as an example of deliberative workshops, can play in increasing carbon literacy among a group of low-income social housing tenants living in Glasgow. With some adaptations, Carbon...

  19. Special population planner, version 4.0.

    SciTech Connect (OSTI)

    Kuiper, J.; Tanzman, E.; Metz, W.

    2007-03-26

    Emergencies happen every day. Many are caused by storms or auto accidents and can be planned for, if not predicted. Emergencies resulting from natural hazards often affect a large number of people, and planning for them can be difficult, since knowledge of the needs of the people involved is generally unavailable. Emergencies resulting from accidents at industrial and military facilities can also be large scale in nature if people must be evacuated or sheltered in place. Federal planning for large scale emergencies is the responsibility of the Federal Emergency Management Agency (FEMA), which provides assistance to various emergency management agencies at the national, state and local level. More information about FEMA is available at http://www.fema.gov/. The purpose of the Special Population Planner (SPP) is to help emergency planners address the needs of persons with special needs. The exact definition of 'special population' is a policy decision. Policymakers have included a variety of groups in this term, such as persons with disabilities, those who do not have vehicles with which to evacuate, children who are unattended at times (latchkey children), and many others. The SPP was developed initially for the Alabama Emergency Management Agency as part of its Chemical Stockpile Emergency Preparedness Program (CSEPP), which aids emergency planning and preparedness in communities surrounding military installations across the United States where chemical weapons are stored pending their destruction under federal law. Like that specialized application, this open-source version contains a set of specialized Geographic Information System (GIS) tools to facilitate emergency planning on behalf of persons with special needs, regardless of how the term is defined. While the original SPP system was developed for emergency planning relating to chemical hazards, it can be applied to other threats as well. It is apparent from Hurricane Katrina and other natural and man-made disasters that many of the problems posed by emergency planning for a chemical weapons agent release are shared by other hazards as well. The notion that emergency planning shares common functions underlies the decision by FEMA to include the Chemical Stockpile Emergency Preparedness Program (CSEPP) in its 'all-hazards' planning approach. The CSEPP's official planning guidance operationalizes this approach by suggesting that state and local CSEPP emergency plans 'should be appended to the existing all-hazards emergency plan.' The SPP is programmed as a set of tools within an ESRI ArcMap 9.1 project. ArcMap is a component of both ESRI ArcGIS 9.1 and ESRI ArcView 9.1, and it provides a rich GIS user interface for viewing spatial and tabular data, analyzing it, and producing output reports and maps. This GIS interface has been augmented with the SPP tools for a user interface that provides custom functionality for emergency planning. The system as released also includes some hypothetical example records for special needs populations, facilities, resources, control points and sirens sufficient for showing how the system would work with real information. A GIS database is included with some publicly available example layers. The SPP is designed to support emergency planners as they address emergency management issues, and includes capabilities that support the collection and importing of data, the review of data in a spatial context, and GIS tools for emergency planning. The SPP system allows for the identification and categorization of response zones to allow for multiple levels of preparedness. An Immediate Response Zone (IRZ) might be designated as the area 0 to 10 miles from a facility where the response would be the most urgent. SPP can support more than one set of planning zones to accommodate different types of emergencies or the different jurisdictions of emergency response organizations. These areas can be delineated by any number of criteria that make sense for the area. An area like New Orleans might designate response zones based on the depth above/below s

  20. The Stellar Populations of NGC 3109: Another Dwarf Irregular Galaxy with a Population II Stellar Halo

    E-Print Network [OSTI]

    Dante Minniti; Albert Zijlstra; M. Victoria Alonso

    1998-10-29

    We have obtained V and I-band photometry for about 17500 stars in the field of the dwarf irregular galaxy NGC3109, located in the outskirts of the Local Group. The photometry allows us to study the stellar populations present inside and outside the disk of this galaxy. From the VI color-magnitude diagram we infer metallicities and ages for the stellar populations in the main body and in the halo of NGC3109. The stars in the disk of this galaxy have a wide variety of ages, including very young stars with approximately 10^7 yr. Our main result is to establish the presence of a halo consisting of population II stars, extending out to about 4.5 arcmin (or 1.8 kpc) above and below the plane of this galaxy. For these old stars we derive an age of > 10 Gyr and a metallicity of [Fe/H] = -1.8 +/- 0.2. We construct a deep luminosity function, obtaining an accurate distance modulus (m-M)_0 = 25.62 +/- 0.1 for this galaxy based on the I-magnitude of the red giant branch (RGB) tip and adopting E(V-I) = 0.05.

  1. Simulated population responses of common carp to commercial exploitation

    SciTech Connect (OSTI)

    Weber, Michael J.; Hennen, Matthew J.; Brown, Michael L.

    2011-12-01

    Common carp Cyprinus carpio is a widespread invasive species that can become highly abundant and impose deleterious ecosystem effects. Thus, aquatic resource managers are interested in controlling common carp populations. Control of invasive common carp populations is difficult, due in part to the inherent uncertainty of how populations respond to exploitation. To understand how common carp populations respond to exploitation, we evaluated common carp population dynamics (recruitment, growth, and mortality) in three natural lakes in eastern South Dakota. Common carp exhibited similar population dynamics across these three systems that were characterized by consistent recruitment (ages 3 to 15 years present), fast growth (K = 0.37 to 0.59), and low mortality (A = 1 to 7%). We then modeled the effects of commercial exploitation on size structure, abundance, and egg production to determine its utility as a management tool to control populations. All three populations responded similarly to exploitation simulations with a 575-mm length restriction, representing commercial gear selectivity. Simulated common carp size structure modestly declined (9 to 37%) in all simulations. Abundance of common carp declined dramatically (28 to 56%) at low levels of exploitation (0 to 20%) but exploitation >40% had little additive effect and populations were only reduced by 49 to 79% despite high exploitation (>90%). Maximum lifetime egg production was reduced from 77 to 89% at a moderate level of exploitation (40%), indicating the potential for recruitment overfishing. Exploitation further reduced common carp size structure, abundance, and egg production when simulations were not size selective. Our results provide insights to how common carp populations may respond to exploitation. Although commercial exploitation may be able to partially control populations, an integrated removal approach that removes all sizes of common carp has a greater chance of controlling population abundance and reducing perturbations induced by this invasive species.

  2. Magnetic Fields in Population III Star Formation

    SciTech Connect (OSTI)

    Turk, Matthew J.; Oishi, Jeffrey S.; Abel, Tom; Bryan, Greg

    2012-02-22

    We study the buildup of magnetic fields during the formation of Population III star-forming regions, by conducting cosmological simulations from realistic initial conditions and varying the Jeans resolution. To investigate this in detail, we start simulations from identical initial conditions, mandating 16, 32 and 64 zones per Jeans length, and studied the variation in their magnetic field amplification. We find that, while compression results in some amplification, turbulent velocity fluctuations driven by the collapse can further amplify an initially weak seed field via dynamo action, provided there is sufficient numerical resolution to capture vortical motions (we find this requirement to be 64 zones per Jeans length, slightly larger than, but consistent with previous work run with more idealized collapse scenarios). We explore saturation of amplification of the magnetic field, which could potentially become dynamically important in subsequent, fully-resolved calculations. We have also identified a relatively surprising phenomena that is purely hydrodynamic: the higher-resolved simulations possess substantially different characteristics, including higher infall-velocity, increased temperatures inside 1000 AU, and decreased molecular hydrogen content in the innermost region. Furthermore, we find that disk formation is suppressed in higher-resolution calculations, at least at the times that we can follow the calculation. We discuss the effect this may have on the buildup of disks over the accretion history of the first clump to form as well as the potential for gravitational instabilities to develop and induce fragmentation.

  3. Visualizing Diurnal Population Change in Urban Areas for Emergency Management

    SciTech Connect (OSTI)

    Kobayashi, Tetsuo; Medina, Richard M; Cova, Thomas

    2011-01-01

    There is an increasing need for a quick, simple method to represent diurnal population change in metropolitan areas for effective emergency management and risk analysis. Many geographic studies rely on decennial U.S. Census data that assume that urban populations are static in space and time. This has obvious limitations in the context of dynamic geographic problems. The U.S. Department of Transportation publishes population data at the transportation analysis zone level in fifteen-minute increments. This level of spatial and temporal detail allows for improved dynamic population modeling. This article presents a methodology for visualizing and analyzing diurnal population change for metropolitan areas based on this readily available data. Areal interpolation within a geographic information system is used to create twenty-four (one per hour) population surfaces for the larger metropolitan area of Salt Lake County, Utah. The resulting surfaces represent diurnal population change for an average workday and are easily combined to produce an animation that illustrates population dynamics throughout the day. A case study of using the method to visualize population distributions in an emergency management context is provided using two scenarios: a chemical release and a dirty bomb in Salt Lake County. This methodology can be used to address a wide variety of problems in emergency management.

  4. The Other 15%: Expanding Energy Efficiency to Rural Populations

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

    Populations September 10, 2015 Call Slides and Discussion Summary Agenda Call Logistics and Opening Poll Residential Network and Peer Exchange Call Overview ...

  5. Population estimates for Phase 1: Hanford Environmental Dose Reconstruction Project

    SciTech Connect (OSTI)

    Beck, D.M.; Erickson, A.R.; Harkreader, S.A.

    1992-03-01

    This report summarizes the population estimates of Phase I of the Hanford Environmental Dose Reconstruction (HEDR) Project. These estimates were used to develop preliminary dose estimates.

  6. FITNESS AND DENSITY-DEPENDENT POPULATION GROWTH IN DROSOPHILA MELANOGASTER

    E-Print Network [OSTI]

    Mueller, Laurence D.

    viability (DOBZHANSKY,SPASSKYand TIDWELL1963), fecundity (MARINKOVIC1967), virility (BRITTNACHER1979), developmental rate (MARINKOVIC1967) and sperm displacement (PRQUTand BUNDGAARD1977). Population ecologists have

  7. Modelling climate-related variability of tuna populations from a coupled ocean-biogeochemical-populations dynamics model

    E-Print Network [OSTI]

    Xiu, Peng

    pelamis) and yellowfin (Thunnus albacares) had higher recruitments during El Niño events, the sub of skipjack (Katsuwonus pelamis) population (Lehodey, 1997). However, the run represented a short time

  8. RESEARCH ARTICLE The importance of reproductive strategies in population genetic

    E-Print Network [OSTI]

    Provan, Jim

    .V. 2007 Abstract Knowledge of the levels of genetic diversity maintained in natural populations can play of the last century. A test for heterozygote excess at five nuclear microsatellite loci did not suggest of between-population diversity suggest that all subpopulations can be treated as a single management unit

  9. HLA Genes in Populations of the Aleutian Islands

    E-Print Network [OSTI]

    Rey, Diego; Areces, Cristina; Parga-Lozano, Carlos; Gó mez-Prieto, Pablo; Crawford, Michael H.; Arnaiz-Villena, Antonio

    2010-10-01

    We typed a subset of the Aleut population for HLA loci (HLA-A, HLA-B, HLA-DRB1, HLA-DQB1) to obtain an HLA profile, which was compared to other Eurasian and Amerindian populations for studying Aleut origin and its significance ...

  10. Molecular population genetics and epidemiology of Ceratocystis fagacearum 

    E-Print Network [OSTI]

    Ivors, Kelly Lynn

    1995-01-01

    and the other population represented a sexually active disease center. Three polymorphic RFLP loci were found. Only one population, Willow Springs, had more than 1 allele present at the RFLP loci. Very low levels of variation (G = 1, 1, and 11.69) were detected...

  11. A Mesoscale Diffusion Model in Population Genetics with

    E-Print Network [OSTI]

    O'Leary, Michael

    ' & $ % A Mesoscale Diffusion Model in Population Genetics with Dynamic Fitness Mike O'Leary Towson University Judith R. Miller Georgetown University 1 #12;A mesoscale diffusion model in population genetics that dominance and epistasis are absent. April 28, 2005 Mike O'Leary and Judith Miller Slide 2 #12;A mesoscale

  12. RESEARCH Open Access Genetic variation and population structure of

    E-Print Network [OSTI]

    Jakobsson, Mattias

    representing different ethnic and linguistic groups. The combined power of exclusion (PE) was 0 was combined with previously published genotype data from Egypt, Somalia and the Karamoja population from populations. Individuals from northern Sudan clustered together with those from Egypt, and individuals from

  13. Fast population transfer engineering of three-level systems

    E-Print Network [OSTI]

    Xi Chen; J. G. Muga

    2012-07-12

    We design, by invariant-based inverse engineering, resonant laser pulses to perform fast population transfers in three-level systems. The efficiency and laser intensities are examined for different protocols. The energy cost to improve the fidelity is quantified. The laser intensities can be reduced by populating the intermediate state and by multi-mode driving.

  14. Mutualisms and Population Regulation: Mechanism Shalene Jha1

    E-Print Network [OSTI]

    Mutualisms and Population Regulation: Mechanism Matters Shalene Jha1 *, David Allen2 , Heidi Liere3 honeydew. Despite decades of research and the potential importance in pest control, the precise mechanism of a hemipteran population model, we show that the mechanism of the mutualism is direct, via improved hemipteran

  15. Sex-based population structure of ectoparasites from Neotropical bats

    E-Print Network [OSTI]

    Willig, Michael

    Sex-based population structure of ectoparasites from Neotropical bats STEVEN J. PRESLEY* Center by multiple evolutionary and ecological mechanisms, with natural selection affecting sex ratios as well as the distributions of each sex throughout the environment. To address sex-based aspects of population structure, I

  16. Public Health Principles and Practice Population Health Sciences 780

    E-Print Network [OSTI]

    Sheridan, Jennifer

    Public Health Principles and Practice Population Health Sciences 780 Fall 2011 This course examines population-based approaches to improve the health of the public. The focus will be on learning methods for community health improvement--from assessment to finding and implementing evidence based public health

  17. Public Health Genomics Population Health Sciences 650 Section 023

    E-Print Network [OSTI]

    Sheridan, Jennifer

    Public Health Genomics Population Health Sciences 650 Section 023 Summer 2009, 07/20/09 ­ 07: Public health genomics is a new discipline that uses knowledge gained from genetic and molecular research and improve the health of the population often by enacting health services, programs, and policies

  18. CONFIDENCE LIMITS FOR POPULATION PROJECTIONS WHEN VITAL RATES VARY RANDOMLY

    E-Print Network [OSTI]

    CONFIDENCE LIMITS FOR POPULATION PROJECTIONS WHEN VITAL RATES VARY RANDOMLY TIM GERRODE, age distribution, and vital rates are known (e.g., Leslie 1945; Keyfitz 1968). Such population rates are available. However, there is uncertainty in such projections. First, we rarely know vital

  19. The Taxman Tools Up: An Event History Study of the Introduction of the Personal Income Tax in Western Europe, 1815 - 1941

    E-Print Network [OSTI]

    Aidt, Toke S.; Jensen, Peter S.

    : Faculty of Economics, University of Cambridge, Cambridge CB3 9DD, United Kingdom. E-mail: toke.aidt@econ.cam.ac.uk. Phone: +44 1223 335231. Fax: +44 1223 335475. zDepartment of Border Region Studies, University of Southern Denmark, Alsion 2, DK-6400 Sonder... - borg, Denmark. E-mail: psj@sam.sdu.dk. 1 the United Kingdom, but in all advanced democratic societies moved from the margins to the center of the ?scal state. The decision, by Western European states, to add the income tax to the arsenal of revenue...

  20. Impact of Wind Development on County-Level Income and Employment: A Review of Methods and an Empirical Analysis (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-09-01

    To gain an understanding of the long-term county-level impacts from a large sample of wind power projects and to understand the potential significance of methodological criticisms, the U.S. Department of Agriculture, the Lawrence Berkeley National Laboratory, and NREL recently joined efforts to complete a first-of-its-kind study that quantifies the annual impact on county-level personal income resulting from wind power installations in nearly 130 counties across 12 states. The results of this study, as well as a comparison with the prior county-level estimates generated from input-output models, are summarized here.

  1. Overshoot during phenotypic switching of cancer cell populations

    E-Print Network [OSTI]

    Sellerio, Alessandro L; Ben-Moshe, Noa Bossel; Coco, Stefania; Piccinini, Andrea; Myers, Christopher R; Sethna, James P; Giampietro, Costanza; Zapperi, Stefano; La Porta, Caterina A M

    2015-01-01

    The dynamics of tumor cell populations is hotly debated: do populations derive hierarchically from a subpopulation of cancer stem cells (CSCs), or are stochastic transitions that mutate differentiated cancer cells to CSCs important? Here we argue that regulation must also be important. We sort human melanoma cells using three distinct cancer stem cell (CSC) markers - CXCR6, CD271 and ABCG2 - and observe that the fraction of non-CSC-marked cells first overshoots to a higher level and then returns to the level of unsorted cells. This clearly indicates that the CSC population is homeostatically regulated. Combining experimental measurements with theoretical modeling and numerical simulations, we show that the population dynamics of cancer cells is associated with a complex miRNA network regulating the Wnt and PI3K pathways. Hence phenotypic switching is not stochastic, but is tightly regulated by the balance between positive and negative cells in the population. Reducing the fraction of CSCs below a threshold tr...

  2. The blue plume population in dwarf spheroidal galaxies: genuine blue stragglers or young stellar population?

    E-Print Network [OSTI]

    Y. Momany; E. V. Held; I. Saviane; S. Zaggia; L. Rizzi; M. Gullieuszik

    2007-04-11

    Abridged... Blue stragglers (BSS) are thought to be the product of either primordial or collisional binary systems. In the context of dwarf spheroidal galaxies it is hard to firmly disentangle a genuine BSS population from young main sequence (MS) stars tracing a ~1-2 Gyr old star forming episode. Assuming that their blue plume populations are made of BSS, we estimate the BSS frequency for 8 Local Group non star-forming dwarf galaxies, using a compilation of ground and space based photometry. Our results can be summarized as follows: (i) The BSS frequency in dwarf galaxies, at any given Mv, is always higher than that in globular clusters of similar luminosities; (ii) the BSS frequency for the lowest luminosity dwarf galaxies is in excellent agreement with that observed in the Milky Way halo; and most interestingly (iii) derive a statistically significant anti-correlation between the BSS frequency and the galaxy Mv. The low density, almost collision-less, environments of our dwarf galaxy sample allow us to infer (i) their very low dynamical evolution; (ii) a negligible production of collisional BSS; and consequently (iii) that their blue plumes are mainly made of primordial binaries. The dwarf galaxies anti-correlation can be used as a discriminator: galaxies obeying the anti-correlation are more likely to possess genuine primordial BSS rather than young main sequence stars.

  3. Theoretical Population Biology 69 (2006) 409418 The frequency of the perfect genotype in a population subject to

    E-Print Network [OSTI]

    Waxman, David

    2006-01-01

    contain a singular spike--a Dirac delta function-- corresponding to a non-zero proportion of the population, and the proportion of the population that have the optimal genotype. This is achieved for two is that the equilibrium distribution of genotypic effects is smooth and continuous. However, recent theoretical studies

  4. Genomics Populations for Characterization of Economically Important Traits Structured populations of beef cattle with extensive phenotypic records for economical-

    E-Print Network [OSTI]

    Genomics Populations for Characterization of Economically Important Traits Structured populations efficiency and carcass merit, are a critical need in the post-genome sequencing era. Coupled with the availability of the 7.5x assembly of the bovine genome sequence and the single nucleotide polymorphisms (SNP

  5. Electricity Demand Evolution Driven by Storm Motivated Population Movement

    SciTech Connect (OSTI)

    Allen, Melissa R; Fernandez, Steven J; Fu, Joshua S; Walker, Kimberly A

    2014-01-01

    Managing the risks posed by climate change to energy production and delivery is a challenge for communities worldwide. Sea Level rise and increased frequency and intensity of natural disasters due to sea surface temperature rise force populations to move locations, resulting in changing patterns of demand for infrastructure services. Thus, Infrastructures will evolve to accommodate new load centers while some parts of the network are underused, and these changes will create emerging vulnerabilities. Combining climate predictions and agent based population movement models shows promise for exploring the universe of these future population distributions and changes in coastal infrastructure configurations. In this work, we created a prototype agent based population distribution model and developed a methodology to establish utility functions that provide insight about new infrastructure vulnerabilities that might result from these patterns. Combining climate and weather data, engineering algorithms and social theory, we use the new Department of Energy (DOE) Connected Infrastructure Dynamics Models (CIDM) to examine electricity demand response to increased temperatures, population relocation in response to extreme cyclonic events, consequent net population changes and new regional patterns in electricity demand. This work suggests that the importance of established evacuation routes that move large populations repeatedly through convergence points as an indicator may be under recognized.

  6. SECPOP90: Sector population, land fraction, and economic estimation program

    SciTech Connect (OSTI)

    Humphreys, S.L.; Rollstin, J.A.; Ridgely, J.N.

    1997-09-01

    In 1973 Mr. W. Athey of the Environmental Protection Agency wrote a computer program called SECPOP which calculated population estimates. Since that time, two things have changed which suggested the need for updating the original program - more recent population censuses and the widespread use of personal computers (PCs). The revised computer program uses the 1990 and 1992 Population Census information and runs on current PCs as {open_quotes}SECPOP90.{close_quotes} SECPOP90 consists of two parts: site and regional. The site provides population and economic data estimates for any location within the continental United States. Siting analysis is relatively fast running. The regional portion assesses site availability for different siting policy decisions; i.e., the impact of available sites given specific population density criteria within the continental United States. Regional analysis is slow. This report compares the SECPOP90 population estimates and the nuclear power reactor licensee-provided information. Although the source, and therefore the accuracy, of the licensee information is unknown, this comparison suggests SECPOP90 makes reasonable estimates. Given the total uncertainty in any current calculation of severe accidents, including the potential offsite consequences, the uncertainty within SECPOP90 population estimates is expected to be insignificant. 12 refs., 55 figs., 7 tabs.

  7. Energy efficient low-income housing demonstration with Houston Habitat for Humanity. Final status report, October 1, 1995--September 30, 1997

    SciTech Connect (OSTI)

    1997-09-30

    Using DOE grant funds, the Alliance to Save Energy developed and managed an award-winning low-income housing demonstration in cooperation with Houston Habitat for Humanity at the 1996 and 1997 annual NAHB Builders Show in Houston, Texas. Using a unique group of over 30 national, state and local partners, the energy design of Houston Habitat houses was permanently upgraded to the Energy Star Homes Program threshold. Meeting Energy Star Homes Program criteria, the partner design team increased the level of efficiency approximately 30% over the 1992 Model Energy Code. This innovative design using commercially available materials added approximately $1,400 in cost-effective energy upgrades with an estimated payback of less than 8 years. The 30 public-private partners successfully demonstrated energy and resource efficient housing techniques to the 65,000 NAHB home show attendees and the over 3,000 Habitat affiliates. This project resulted in the Houston Habitat affiliate becoming the nation`s first low-income Energy Star Homes Program home builder. By the year 2000, Houston Habitat anticipates building over 500 homes to this new level of efficiency as well as set an example for other Habitat affiliates nationwide to follow. The 1997 demonstration house utilized an all-women volunteer builders team to construct a 3 bedroom home in Houston Habitat`s Woodglen Subdivision. Energy consumption was remotely metered by Texas A and M.

  8. Diversity waves in collapse-driven population dynamics

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

    Maslov, Sergei; Sneppen, Kim

    2015-09-14

    Populations of species in ecosystems are often constrained by availability of resources within their environment. In effect this means that a growth of one population, needs to be balanced by comparable reduction in populations of others. In neutral models of biodiversity all populations are assumed to change incrementally due to stochastic births and deaths of individuals. Here we propose and model another redistribution mechanism driven by abrupt and severe collapses of the entire population of a single species freeing up resources for the remaining ones. This mechanism may be relevant e.g. for communities of bacteria, with strain-specific collapses caused e.g.more »by invading bacteriophages, or for other ecosystems where infectious diseases play an important role. The emergent dynamics of our system is cyclic ‘‘diversity waves’’ triggered by collapses of globally dominating populations. The population diversity peaks at the beginning of each wave and exponentially decreases afterwards. Species abundances are characterized by a bimodal time-aggregated distribution with the lower peak formed by populations of recently collapsed or newly introduced species while the upper peak - species that has not yet collapsed in the current wave. In most waves both upper and lower peaks are composed of several smaller peaks. This self-organized hierarchical peak structure has a long-term memory transmitted across several waves. It gives rise to a scale-free tail of the time-aggregated population distribution with a universal exponent of 1.7. We show that diversity wave dynamics is robust with respect to variations in the rules of our model such as diffusion between multiple environments, species-specific growth and extinction rates, and bet-hedging strategies.« less

  9. Long-term projections of national, regional, and state population

    SciTech Connect (OSTI)

    McDonald, J.F.; South, D.W.

    1986-07-01

    The projections prepared by the US Bureau of the Census are the best available projections of total US population. The DRI projections of population at the regional and state level to the year 2008 are the best available and are consistent with the US Bureau of the Census projections of total US population. The DRI regional and state projections can be extended from 2008 to 2030 with a simple model based on economic opportunity, although an even simpler model - constant shares - is used for the 1985 test runs. The US Bureau of the Census prepares the best available projections of the US age-sex distribution.

  10. Population dynamics, production, and prey consumption of fathead minnows (Pimephales

    E-Print Network [OSTI]

    ) in prairie wetlands: a bioenergetics approach W.G. Duffy Abstract: I assessed the population dynamics of fathead minnows (Pimephales promelas) in prairie wetlands and developed a bioenergetics model to estimate

  11. Optimal Urban Population Size: National vs Local Economic Efficiency

    E-Print Network [OSTI]

    Nam, Kyung-min

    This paper explores whether the population size of the Seoul Metropolitan Area (SMA) in Korea is efficient in terms of the national economy. To undertake this analysis, a recursively dynamic interregional computable general ...

  12. Population SAMC, ChIP-chip Data Analysis and Beyond 

    E-Print Network [OSTI]

    Wu, Mingqi

    2011-02-22

    This dissertation research consists of two topics, population stochastics approximation Monte Carlo (Pop-SAMC) for Baysian model selection problems and ChIP-chip data analysis. The following two paragraphs give a brief introduction to each...

  13. Environmental influences on largemouth bass Micropterus salmoides populations in shallow

    E-Print Network [OSTI]

    ). Vegetation coverage of lakes plays a vital role in the population dynamics of largemouth bass (Aggus & Elliot), and too little coverage apparently is linked to low recruitment in some waters (Aggus & Elliot 1975

  14. Sandia Energy - CFD-Populated Empirical Turbine Wake Model

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

    parameters that effect tidal turbine wakes, such as yaw angle to incident flow and vertical blockage ratio, may be incorporated as part of future revisions of the CFD populated...

  15. Distance sampling and the challenge of monitoring butterfly populations

    E-Print Network [OSTI]

    Shuker, David

    Distance sampling and the challenge of monitoring butterfly populations Nick J. B. Isaac110 5DD, UK; 5 Institute for Environment, Sustainability and Regeneration, Mellor Building Monitoring Scheme (UKBMS) have been influential in informing our understanding of environmental change

  16. Ecology and population structure of vibrionaceae in the coastal ocean

    E-Print Network [OSTI]

    Preheim, Sarah Pacocha

    2010-01-01

    Extensive genetic diversity has been discovered in the microbial world, yet mechanisms that shape and maintain this diversity remain poorly understood. This thesis investigates to what extent populations of the ...

  17. Disease resistance and performance of blended populations of creepi 

    E-Print Network [OSTI]

    Abernathy, Scott David

    1999-01-01

    Plant diseases are a major problem on creeping bentgrass greens and can significantly decrease putting quality. Blended populations comprised of two or more cultivars within the same species have been utilized to decrease disease development...

  18. Optimal control of population transfer in Markovian open quantum systems

    E-Print Network [OSTI]

    Wei Cui; Zairong Xi; Yu Pan

    2010-04-27

    There has long been interest to control the transfer of population between specified quantum states. Recent work has optimized the control law for closed system population transfer by using a gradient ascent pulse engineer- ing algorithm [1]. Here, a spin-boson model consisting of two-level atoms which interact with the dissipative environment, is investigated. With opti- mal control, the quantum system can invert the populations of the quantum logic states. The temperature plays an important role in controlling popula- tion transfer. At low temperatures the control has active performance, while at high temperatures it has less erect. We also analyze the decoherence be- havior of open quantum systems with optimal population transfer control, and we find that these controls can prolong the coherence time. We hope that active optimal control can help quantum solid-state-based engineering.

  19. Export-Oriented Populism: Commodities and Coalitions in Argentina

    E-Print Network [OSTI]

    Richardson, Neal P.

    2009-01-01

    experience: Natural resource export structures and the255 DOI 10.1007/s12116-008-9037-5 Export-Oriented Populism:benefits for urban workers with export promotion, emerged in

  20. Causes and consequences of sexual selection in a wild population 

    E-Print Network [OSTI]

    Stopher, Katie Vivienne

    2011-11-24

    heterogeneity on selection. Further, important questions remain about the consequences of sexual selection for genetic structuring and genetic variation within populations. In this thesis, I investigate the causes and consequences of sexual selection in a...

  1. POPULATION ECOLOGY Dispersal of the Eucalyptus Longhorned Borer (Coleoptera

    E-Print Network [OSTI]

    Hanks, Lawrence M.

    POPULATION ECOLOGY Dispersal of the Eucalyptus Longhorned Borer (Coleoptera: Cerambycidae) in Urban behavior of the eucalyptus longhorned borer, Phoracantha semipunctata (F.), a crepuscular beetle whose distributed in time and space. KEY WORDS Phoracantha semipunctata, Cerambycidae, eucalyptus, wood boring

  2. Extinction dynamics of a discrete population in an oasis

    E-Print Network [OSTI]

    Berti, Stefano; Vergni, Davide; Vulpiani, Angelo

    2015-01-01

    Understanding the conditions ensuring the persistence of a population is an issue of primary importance in population biology. The first theoretical approach to the problem dates back to the 50's with the KiSS (after Kierstead, Slobodkin and Skellam) model, namely a continuous reaction-diffusion equation for a population growing on a patch of finite size $L$ surrounded by a deadly environment with infinite mortality -- i.e. an oasis in a desert. The main outcome of the model is that only patches above a critical size allow for population persistence. Here, we introduce an individual-based analogue of the KiSS model to investigate the effects of discreteness and demographic stochasticity. In particular, we study the average time to extinction both above and below the critical patch size of the continuous model and investigate the quasi-stationary distribution of the number of individuals for patch sizes above the critical threshold.

  3. Tephrochronology, landscape and population: impacts of plague on medieval Iceland 

    E-Print Network [OSTI]

    Streeter, Richard Thomas

    2012-06-25

    This thesis examines the extent to which geomorphological change in sub-arctic landscapes may be driven by rapid declines in population over timescales of decades to centuries. Demographic decline driven by disease in ...

  4. Analysis of high-density SNP data from complex populations 

    E-Print Network [OSTI]

    Floyd, James A.B.

    2011-06-27

    Data from a Croatian isolate population are analysed in a genome-wide association study (GWAS) for a variety of disease-related quantitative traits. A novel genomewide approach to analysing pedigree-based association ...

  5. Egypt's population policies and family planning program: a critical examination 

    E-Print Network [OSTI]

    Carr, Aline B.

    1996-01-01

    Egypt's national family planning program, in existence since 1965, has been fairly successful in increasing the use of family planning methods and lowering the population growth rate in Egypt. However, the fact that as few as 10 percent of women...

  6. Genetic Evidence for Recent Population Mixture in India

    E-Print Network [OSTI]

    Moorjani, Priya

    Most Indian groups descend from a mixture of two genetically divergent populations: Ancestral North Indians (ANI) related to Central Asians, Middle Easterners, Caucasians, and Europeans; and Ancestral South Indians (ASI) ...

  7. GIS Training Program for Population Scientists—NICHD Proposal

    E-Print Network [OSTI]

    Matthews, Stephen A.; Population Research Institute, Pennsylvania State University, and the Center for Spatially Integrated Social Science, UC Santa Barbara

    2004-01-01

    NICHD R-25 proposal 2004 GIS Training for PopulationSara L. McLafferty. 2002. GIS and Public Health. New York:1994. Spatial Analysis and GIS. Bristol, PA: Taylor and

  8. Tool investigates population, climate impacts on global water...

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

    climate and popu-lation data sources and develop prelimi-nary per capita water availability projec-tions at a global scale," said Esther Parish of the Oak Ridge National...

  9. Reading out population codes with a matched filter 

    E-Print Network [OSTI]

    van Rossum, Mark; Renart, Alfonso; Nelson, Sacha; Wang, X.-J.; Turrigiano, Gina G.

    2001-01-01

    We study the optimal way to decode information present in a population code. Using a matched filter, the performance in Gaussian additive noise is as good as the theoretical maximum. The scheme can be applied when ...

  10. Predicting Agent Strategy Mix of Evolving Populations Sabyasachi Saha

    E-Print Network [OSTI]

    Sen, Sandip

    Predicting Agent Strategy Mix of Evolving Populations Sabyasachi Saha Department of Math & Computer Science The University of Tulsa sabyasachi-saha@utulsa.edu Sandip Sen Department of Math & Computer

  11. Characteristics and Changes in the Texas Farm Population

    E-Print Network [OSTI]

    Skrabanek, R. L.

    1955-01-01

    in the same direction as in the nation and the West South Central division, comprising Arkansas, Louisiana, Oklahoma and Texas. Before 1937, the State's farm population did not decline as rapidly as in the nation or West South Central division. Since 1945... is more important numerically than the city population. In 30 counties, more than 50 percent of the people were classified as rural farm residents in 1950. In 85 counties, more than 40 percent of the people were similarly classified. Nonwhites comprised...

  12. Genetic analysis in the Collaborative Cross breeding population

    SciTech Connect (OSTI)

    Philip, Vivek [University of Tennessee, Knoxville (UTK); Sokoloff, Greta [ORNL; Ackert-Bicknell, Cheryl [Jackson Laboratory, The, Bar Harbor, ME; Striz, Martin [University of Kentucky, Lexington; Branstetter, Lisa R [ORNL; Beckmann, Melissa [ORNL; Spence, Jason S [ORNL; Jackson, Barbara L [ORNL; Galloway, Leslie D [ORNL; Barker, Gene [ORNL; Wymore, Ann M [Oak Ridge National Laboratory (ORNL); Hunsicker, Patricia R [ORNL; Durtschi, David W [University of Kentucky, Lexington; Shaw, Ginger S [University of Kentucky, Lexington; Shinpock, Sarah G [ORNL; Manly, Kenneth F [University of Kentucky, Lexington; Miller, Darla R [ORNL; Donahue, Kevin [University at Buffalo, NY; Culiat, Cymbeline T [ORNL; Churchill, Gary A [Jackson Laboratory, The, Bar Harbor, ME; Lariviere, William R [University of Pittsburgh; Palmer, Abraham [University of Chicago; O'Hara, Bruce [University of Kentucky; Voy, Brynn H [ORNL; Chesler, Elissa J [ORNL

    2011-01-01

    Genetic reference populations in model organisms are critical resources for systems genetic analysis of disease related phenotypes. The breeding history of these inbred panels may influence detectable allelic and phenotypic diversity. The existing panel of common inbred strains reflects historical selection biases, and existing recombinant inbred panels have low allelic diversity. All such populations may be subject to consequences of inbreeding depression. The Collaborative Cross (CC) is a mouse reference population with high allelic diversity that is being constructed using a randomized breeding design that systematically outcrosses eight founder strains, followed by inbreeding to obtain new recombinant inbred strains. Five of the eight founders are common laboratory strains, and three are wild-derived. Since its inception, the partially inbred CC has been characterized for physiological, morphological, and behavioral traits. The construction of this population provided a unique opportunity to observe phenotypic variation as new allelic combinations arose through intercrossing and inbreeding to create new stable genetic combinations. Processes including inbreeding depression and its impact on allelic and phenotypic diversity were assessed. Phenotypic variation in the CC breeding population exceeds that of existing mouse genetic reference populations due to both high founder genetic diversity and novel epistatic combinations. However, some focal evidence of allele purging was detected including a suggestive QTL for litter size in a location of changing allele frequency. Despite these inescapable pressures, high diversity and precision for genetic mapping remain. These results demonstrate the potential of the CC population once completed and highlight implications for development of related populations. Supplementary material consists of Supplementary Table 1 Phenotypic means, variances, ranges and heritabilities for all traits and generations, Supplementary Table 2, all phenotypic values, Supplementary Table 3, multiple QTL mapping.

  13. Assessment and Corrective Management for Fish Populations in Small Impoundments. 

    E-Print Network [OSTI]

    Anonymous,

    1985-01-01

    to the pondowner for correcting unbalanced or undesirable fish populations. These include renovation, harvest manipu lation and supplemental stocking. However, if unsatisfactory fish populations are a result of poor water quality, improper pond design or an over...-abundance of aquatic vegetation, the suggested corrective techniques alone may not be successful. Renovation Total renovation using rotenone should be considered for a farm pond if species such as gar, bowfin, flathead catfish, chain pickerel, black bullheads...

  14. Stellar Populations and Surface Brightness Fluctuations: New Observations and Models

    E-Print Network [OSTI]

    John P. Blakeslee; Alexandre Vazdekis; Edward A. Ajhar

    2000-08-15

    We examine the use of surface brightness fluctuations (SBF) for both stellar population and distance studies. New V-band SBF data are reported for five Fornax cluster galaxies and combined with literature data to define a new V-band SBF distance indicator. We use new stellar population models, based on the latest Padua isochrones transformed empirically to the observational plane, to predict SBF magnitudes and integrated colours for a wide range of population ages and metallicities. We examine the sensitivity of the predictions to changes in the isochrones, transformations, and IMF. The new models reproduce the SBF data for globular clusters fairly well, especially if higher metallicity globulars are younger. The models also give a good match to the "fluctuation colors" of elliptical galaxies. In order to obtain theoretical calibrations of the SBF distance indicators, we combine our single-burst models into composite population models. These models reproduce the observed behavior of the SBF magnitudes as a function of stellar population parameters, including the steep colour dependence found for HST/WFPC2 F814W SBF data. Because the theoretical SBF calibrations are fairly sensitive to uncertain details of stellar evolution, the empirical calibrations are more secure. However, the sensitivity of SBF to these finer details potentially makes it a powerful constraint for stellar evolution and population synthesis. [abbridged

  15. From Single-Cell Genetic Architecture to Cell Population Dynamics: Quantitatively Decomposing the Effects of Different Population

    E-Print Network [OSTI]

    Bernard, Samuel

    From Single-Cell Genetic Architecture to Cell Population Dynamics: Quantitatively Decomposing Architecture Nikos V. Mantzaris Department of Chemical and Biomolecular Engineering, Rice University, Houston with positive feedback architecture. The framework consists of three vastly different mathematical formulations

  16. Population genomics: Whole-genome analysis of polymorphism and divergence in Drosophila simulans

    E-Print Network [OSTI]

    2007-01-01

    PLoS BIOLOGY Population Genomics: Whole-Genome Analysis ofwww.plosbiology.org Population Genomics of D. simulans Table11 | e310 Population Genomics of D. simulans Table S15. GO

  17. Comparisons of Access to, Cost of, and Quality of Health Care Between Rural and Urban Populations 

    E-Print Network [OSTI]

    Lee, Wei-Chen

    2013-12-06

    There are 46.2 million Americans (15% of total population) living in rural counties. Rural populations disproportionately suffer from inadequate access to, high cost of, and poor quality of health services compared to urban populations. Furthermore...

  18. Effects of Supplemental Food on Population Dynamics of Cotton Rats, Sigmodon Hispidus

    E-Print Network [OSTI]

    Doonan, Terry J.; Slade, Norman A.

    1995-04-01

    Variation in resource abundance affects population dynamics by altering demographic processes and interactions among individuals in the population. For small mammals, food is likely to be a critical resource. Population ...

  19. The Magellanic Bridge: The Nearest Purely Tidal Stellar Population

    E-Print Network [OSTI]

    Jason Harris

    2006-12-04

    We report on observations of the stellar populations in twelve fields spanning the region between the Magellanic Clouds, made with the Mosaic-II camera on the 4-meter telescope at the Cerro-Tololo Inter-American Observatory. The two main goals of the observations are to characterize the young stellar population (which presumably formed in situ in the Bridge and therefore represents the nearest stellar population formed from tidal debris), and to search for an older stellar component (which would have been stripped from either Cloud as stars, by the same tidal forces which formed the gaseous Bridge). We determine the star-formation history of the young inter-Cloud population, which provides a constraint on the timing of the gravitational interaction which formed the Bridge. We do not detect an older stellar population belonging to the Bridge in any of our fields, implying that the material that was stripped from the Clouds to form the Magellanic Bridge was very nearly a pure gas.

  20. Table HC1-7a. Housing Unit Characteristics by Four Most Populated...

    Gasoline and Diesel Fuel Update (EIA)

    Housing Unit Characteristics by Four Most Populated States, Million U.S. Households, 2001 Housing Unit Characteristics RSE Column Factor: Total U.S. Four Most Populated States...

  1. BUILDING A UNITED STATES DATA BASE: POPULATIONS AT RISK TO ENVIRONMENTAL POLLUTION

    E-Print Network [OSTI]

    Sacks, Susan T.

    2014-01-01

    BUILDING A UNITED STATES DATA BASE: POPULATIONS AT RISK TOBUILDING A UNITED STATES DATA BASE: POPULATIONS AT RISK TOof an demographic integrated data base characteristics, air

  2. Determinants of Population Growth in Rajasthan: An Analysis

    E-Print Network [OSTI]

    V. V. Singh; Alka Mittal; Neetish Sharma; Florentin Smarandache

    2010-12-01

    Rajasthan is the biggest State of India and is currently in the second phase of demographic transition and is moving towards the third phase of demographic transition with very slow pace. However, state's population will continue to grow for a time period. Rajasthan's performance in the social and economic sector has been poor in past. The poor performance is the outcome of poverty, illiteracy and poor development, which co-exist and reinforce each other. There are many demographic and socio-economic factors responsible for population growth. This paper attempts to identify the demographic and socio-economic variables, which are responsible for population growth in Rajasthan with the help of multivariate analysis.

  3. Stochastic resonance in a generalized Von Foerster population growth model

    SciTech Connect (OSTI)

    Lumi, N.; Mankin, R.

    2014-11-12

    The stochastic dynamics of a population growth model, similar to the Von Foerster model for human population, is studied. The influence of fluctuating environment on the carrying capacity is modeled as a multiplicative dichotomous noise. It is established that an interplay between nonlinearity and environmental fluctuations can cause single unidirectional discontinuous transitions of the mean population size versus the noise amplitude, i.e., an increase of noise amplitude can induce a jump from a state with a moderate number of individuals to that with a very large number, while by decreasing the noise amplitude an opposite transition cannot be effected. An analytical expression of the mean escape time for such transitions is found. Particularly, it is shown that the mean transition time exhibits a strong minimum at intermediate values of noise correlation time, i.e., the phenomenon of stochastic resonance occurs. Applications of the results in ecology are also discussed.

  4. Real-Time Bioluminescent Tracking of Cellular Population Dynamics

    SciTech Connect (OSTI)

    Close, Dan; Sayler, Gary Steven; Xu, Tingting; Ripp, Steven Anthony

    2014-01-01

    Cellular population dynamics are routinely monitored across many diverse fields for a variety of purposes. In general, these dynamics are assayed either through the direct counting of cellular aliquots followed by extrapolation to the total population size, or through the monitoring of signal intensity from any number of externally stimulated reporter proteins. While both viable methods, here we describe a novel technique that allows for the automated, non-destructive tracking of cellular population dynamics in real-time. This method, which relies on the detection of a continuous bioluminescent signal produced through expression of the bacterial luciferase gene cassette, provides a low cost, low time-intensive means for generating additional data compared to alternative methods.

  5. The effects of health behaviors on the dietary quality of a non- institutionalized elderly population 

    E-Print Network [OSTI]

    Esclovon, Michelle Fischer

    1993-01-01

    . Over all Dietary Quality Dietary Intake-Health Behaviors. Dietary Intake-Medication Use CONCLUSION. REFERENCES. VITA Page 112 116 120 124 129 129 129 133 135 144 151 152 160 LIST OF TABLES Table 1. Classification of food groups... and Education Income and education levels are shown in Tables 3 and 4. Grou I a es 56-69: Statistically more males in this group had an income greater than $1, 600 per month when compared to the females (X' =5. 63, p&0. 05) . Significantly more females had...

  6. The scope of the Weatherization Assistance Program: The weatherized population and the resource base

    SciTech Connect (OSTI)

    Power, M.; Eisenberg, J.F.; Michels, E. (Economic Opportunity Research Inst., Washington, DC (United States)); Witherspoon, M.J. (National Association for State Community Service Programs, Washington, DC (United States)); Brown, M.A. (Oak Ridge National Lab., TN (United States))

    1992-05-01

    This study is one of five parts of the US Department of Energy's national evaluation of its Weatherization Assistance Program (WAP). It has three major goals: (1) to enumerate the size and sources of investment in low-income weatherization; (2) to provide a count of the number of low-income units weatherized by all weatherization programs and characterized the type and tenure of those homes; and (3) to document the extent to which the DOE/WAP funding has been expanded though use of external resources.

  7. The scope of the Weatherization Assistance Program: The weatherized population and the resource base

    SciTech Connect (OSTI)

    Power, M.; Eisenberg, J.F.; Michels, E. [Economic Opportunity Research Inst., Washington, DC (United States); Witherspoon, M.J. [National Association for State Community Service Programs, Washington, DC (United States); Brown, M.A. [Oak Ridge National Lab., TN (United States)

    1992-05-01

    This study is one of five parts of the US Department of Energy`s national evaluation of its Weatherization Assistance Program (WAP). It has three major goals: (1) to enumerate the size and sources of investment in low-income weatherization; (2) to provide a count of the number of low-income units weatherized by all weatherization programs and characterized the type and tenure of those homes; and (3) to document the extent to which the DOE/WAP funding has been expanded though use of external resources.

  8. A. Kusiak, Data Mining in Design of Products and Production Systems, Proceedings of INCOM'2006: 12th IFAC/IFIP/IFORS/IEEE Symposium on Control Problems in Manufacturing, May 2006, Saint-Etienne, France, Vol. 1, pp. 49-53.

    E-Print Network [OSTI]

    Kusiak, Andrew

    A. Kusiak, Data Mining in Design of Products and Production Systems, Proceedings of INCOM'2006: 12-Etienne, France, Vol. 1, pp. 49-53. 49 DATA MINING IN DESIGN OF PRODUCTS AND PRODUCTION SYSTEMS Andrew Kusiak://www.icaen.uiowa.edu/~ankusiak Abstract: As a new science, data mining is acquiring its own identity by refining the concepts from other

  9. Targets of recent positive selection in Indian populations

    E-Print Network [OSTI]

    Romero, Irene Gallego

    2010-06-24

    HGDP-CEPH, our data Old World, Oceania Split into 8 geographic groups/40 populations Illumina 650K, 610K chips (~550,000 autosomal SNPs) India in a global context: FST Computational challenges Phasing: Inferring haplotype from genotype Calculating test... statistics: iHS and XP-EHH Data post-processing: ~550,000 data points per population per statistic SNPs to genes/genomic regions Phasing Likelihood-based methods 550,000 SNPs per individual, ~1,000 individuals Phasing chromosome 2 (densest, ~50,000 SNPs) can...

  10. Methods for the survey and genetic analysis of populations

    DOE Patents [OSTI]

    Ashby, Matthew

    2003-09-02

    The present invention relates to methods for performing surveys of the genetic diversity of a population. The invention also relates to methods for performing genetic analyses of a population. The invention further relates to methods for the creation of databases comprising the survey information and the databases created by these methods. The invention also relates to methods for analyzing the information to correlate the presence of nucleic acid markers with desired parameters in a sample. These methods have application in the fields of geochemical exploration, agriculture, bioremediation, environmental analysis, clinical microbiology, forensic science and medicine.

  11. Modeling Endemic Bark Beetle Populations in Southwestern Ponderosa Pine Forests 

    E-Print Network [OSTI]

    Garza, Christopher

    2015-02-20

    at the spatial distribution and susceptibility of host trees in southwestern US forested landscapes. To do this, I (1) analyzed 21 years of field data to examine the population dynamics of bark beetles and the factors that affect them, (2) created a statistical...

  12. Turchin and Korotayev Page 1 Population Dynamics and Internal

    E-Print Network [OSTI]

    White, Douglas R.

    and Tang China, and the Roman Empire. Our empirical results support the population-warfare theory: we find of the common consequences of overpopulation along with disease and famine. More recently, the assumption Korea coincided with underpopulation or depopulation, rather than overpopulation. Finally, a cross

  13. Populations Voss, R.; /Garching, Max Planck Inst., MPE; Ajello...

    Office of Scientific and Technical Information (OSTI)

    study the populations of X-ray sources in the Milky Way in the 15-55 keV band using a deep survey with the BAT instrument aboard the Swift observatory. We present the logN-logS...

  14. Ensemble behaviour in population processes with applications to ecological systems

    E-Print Network [OSTI]

    Pollett, Phil

    for population pro- cesses in continuous time, addressing questions concerning the behaviour of ensembles at time t. Our intuition tells us that, for the ensemble, the proportion of individuals in patch j should proportions using individual-level models. In Section 2 we give a careful examination of whether

  15. GALAXY CLUSTERS HUBBLE VOLUME SIMULATIONS: COSMOLOGICAL CONSTRAINTS FROM SURVEY POPULATIONS

    E-Print Network [OSTI]

    Thomas, Peter

    . Peacock, P. Thomas 10 (The Virgo Consortium) Received October accepted March ABSTRACT gigaparticle N­body simulations study galaxy cluster populations in Hubble volumes #CDM (#m and #CDM ¼ 1) world models. Mapping temperature function determines ratio specific thermal energies dark matter and intracluster We derive scaling

  16. Advances and limits of using population genetics to understand

    E-Print Network [OSTI]

    Ross-Ibarra, Jeffrey

    as being extreme- ly common [1] and central to understanding the role of adaptation in shaping species diversity. Local adaptation also can contribute to the maintenance of genetic variation, be a stepping stone experiments to investigate the role of habitat in driving population divergence. Even earlier, forest tree

  17. Exposure to air pollution Exposition is quantified as population weighted

    E-Print Network [OSTI]

    Menut, Laurent

    Exposure to air pollution Exposition is quantified as population weighted concentration of relevant Benefit Analysis The sanitary benefits brought about by air pollution improvement as a result of climate by a collateral reduction of air pollutant emissions, hence a lower cost of AQ legislation. Modelling Framework

  18. Evolution of Genetic Programming Populations W. B. Langdon

    E-Print Network [OSTI]

    Fernandez, Thomas

    Keywords: population variety, diversity, genetic programming, Price's theorem, Fisher's theorem. Abstract 1 by briefly describing the stack experiment [ Langdon, 1995 ] . In Section 2 we show Price's Covariance and Selection Theorem can be applied to Genetic Algorithms (GAs) and GP to predict changes in gene

  19. Steeped in Rhetoric: Digital Populism and the Tea Party Movement

    E-Print Network [OSTI]

    Branson, Tyler S.

    2011-04-26

    social movements in a new way than movements past, in that web-based communication is a staple of the movement. Also, the Tea Party's "Web 2.0" identity intersects with a tradition of populism, combining new media communication with rhetoric depicting...

  20. PHYLOGENOMICS AND POPULATION GENOMICS: MODDELS, ALGORITHMS, AND ANALYTICAL TOOLS

    E-Print Network [OSTI]

    Rosenberg, Noah

    PHYLOGENOMICS AND POPULATION GENOMICS: MODDELS, ALGORITHMS, AND ANALYTICAL TOOLS LUAY K. NAKHLEH on relationships among species themselves. The two fields share a number of overlapping tools, as well as similar analytical tools for assessing properties of the algorithms. We are pleased to present five papers

  1. Switching and Growth for Microbial Populations in Catastrophic Responsive Environments

    E-Print Network [OSTI]

    Visco, Paolo - Laboratoire Matière et Systèmes Complexes, Université Paris 7

    Switching and Growth for Microbial Populations in Catastrophic Responsive Environments Paolo Visco), Universite´ Paris-Sud, Orsay, France ABSTRACT Phase variation, or stochastic switching between alternative environments. We use a theoretical model to assess whether such switching is a good strategy for growth

  2. Population Files for use with CAP88 at Los Alamos

    SciTech Connect (OSTI)

    McNaughton, Michael W [Los Alamos National Laboratory; Brock, Burgandy R [Los Alamos National Laboratory

    2012-07-10

    CAP88 (Clean Air Act Assessment Package 1988) is a computer model developed for the US Environmental Protection Agency to assess the potential dose from radionuclide emissions to air and to demonstrate compliance with the Clean Air Act. It has options to calculate either individual doses, in units of mrem, or a collective dose, also called population dose, in units of person-rem. To calculate the collective dose, CAP88 uses a population file such as LANL.pop, that lists the number of people in each sector (N, NNE, NE, etc.) as a function of distance (1 to 2 km, etc.) out to a maximum radius of 80 km. Early population files are described in the Los Alamos National Laboratory (LANL) Environmental Reports for 1985 (page 14) and subsequent years. LA-13469-MS describes a population file based on the 1990 census. These files have been updated several times, most recently in 2006 for CAP88 version 3. The 2006 version used the US census for 2000. The present paper describes the 2012 updates, using the 2010 census.

  3. GEOGRAPHY 288: POPULATION, ENVIRONMENT, AND DEVELOPMENT IN THE DEVELOPING WORLD

    E-Print Network [OSTI]

    Lopez-Carr, David

    literature and 2) students receive feedback towards the improved development of their own research projectsGEOGRAPHY 288: POPULATION, ENVIRONMENT, AND DEVELOPMENT IN THE DEVELOPING WORLD Winter 2005 Class@geog.ucsb.edu phone: 4219 Office: Ellison 5714 Office hours: M 11-12; W 1-2 . NATURE OF THE COURSE This seminar

  4. Are trout populations affected by reach-scale stream slope?

    E-Print Network [OSTI]

    ). Reach-scale stream slope and the energy that it helps to gen- erate exert a dominant influenceAre trout populations affected by reach-scale stream slope? Daniel J. Isaak And Wayne A. Hubert Abstract: Reach-scale stream slope and the structure of associated physical habitats are thought to affect

  5. Population and Climate Change: How Depletion of Nature and

    E-Print Network [OSTI]

    Maryland at College Park, University of

    , Deforestation, Desertification, etc Inputs: 1. Energy Oil, Coal, Gas, Nuclear, Biomass, Renewables, etc 2Population and Climate Change: How Depletion of Nature and Human Inequality Impact Sustainability best farmland This is not sustainable: "We are drawing down the stock of natural capital

  6. Counting Critters: Developing new ways to estimate wildlife population size

    E-Print Network [OSTI]

    Thomas, Len

    tamarin is a critically endangered primate, endemic to the tropical forests of NW Colombia. It is hard populations. Biometrics 65: 572-583 Photo: Neil Hope Photo: Callan Duck pups adults Listening for Whales tp ,1,5.0 pup 1 2 3 4 5 6+ t,1 a a a a a density dependent pup survival a Photo: Diane Claridge Traditional

  7. Genetic Evidence on the Origins of Indian Caste Populations

    E-Print Network [OSTI]

    Bamshad, Michael; Kivisild, Toomas; Watkins, W. Scott; Dixon, Mary E.; Ricker, Chris E.; Rao, Baskara B.; Naidu, J. Mastan; Prasad, B. V. Ravi; Reddy, P. Govinda; Rasanayagam, Arani; Papiha, Surinder S.; Villems, Richard; Redd, Alan J.; Hammer, Michael F.; Nguyen, Son V.; Carroll, Marion L.; Batzer, Mark A.; Jorde, Lynn B.

    2001-11-01

    have established the Hindu caste system and placed themselves primarily in castes of higher rank. To explore the impact of West Eurasians on contemporary Indian caste populations, we compared mtDNA (400 bp of hypervariable region 1 and 14 restriction...

  8. Modelling microbial population dynamics in nitritation processes Elisabetta Giusti a

    E-Print Network [OSTI]

    Modelling microbial population dynamics in nitritation processes Elisabetta Giusti a , Stefano. Marta 3, I-50139 Florence, Italy b ENEA, Italian National Agency for New Technologies, Energy January 2011 Accepted 1 February 2011 Available online 3 March 2011 Keywords: Microbial kinetics Activated

  9. A Diffusion Model in Population Genetics with Mutation and Dynamic

    E-Print Network [OSTI]

    O'Leary, Michael

    A Diffusion Model in Population Genetics with Mutation and Dynamic Fitness Mike O'Leary Department of Mathematics Towson University May 24, 2008 Mike O'Leary (Towson University) A Diffusion Model in Genetics May Miller, Georgetown University Mike O'Leary (Towson University) A Diffusion Model in Genetics May 24, 2008

  10. TWO POPULATIONS OF GAMMA-RAY BURST RADIO AFTERGLOWS

    SciTech Connect (OSTI)

    Hancock, P. J.; Gaensler, B. M.; Murphy, T., E-mail: Paul.Hancock@Sydney.edu.au [Also at Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), The University of Sydney, Sydney, NSW 2006, Australia. (Australia)

    2013-10-20

    The detection rate of gamma-ray burst (GRB) afterglows is ?30% at radio wavelengths, much lower than in the X-ray (?95%) or optical (?70%) bands. The cause of this low radio detection rate has previously been attributed to limited observing sensitivity. We use visibility stacking to test this idea, and conclude that the low detection rate is instead due to two intrinsically different populations of GRBs: radio-bright and radio-faint. We calculate that no more than 70% of GRB afterglows are truly radio-bright, leaving a significant population of GRBs that lack a radio afterglow. These radio-bright GRBs have higher gamma-ray fluence, isotropic energies, X-ray fluxes, and optical fluxes than the radio-faint GRBs, thus confirming the existence of two physically distinct populations. We suggest that the gamma-ray efficiency of the prompt emission is responsible for the difference between the two populations. We also discuss the implications for future radio and optical surveys.

  11. Genetic Evidence for Recent Population Mixture in India

    E-Print Network [OSTI]

    Reich, David

    ARTICLE Genetic Evidence for Recent Population Mixture in India Priya Moorjani,1,2,6,* Kumarasamy is consistent with having occurred during this period. These results show that India experienced a demographic. Introduction Genetic evidence indicates that most of the ethno-linguis- tic groups in India descend from

  12. Biomechanical ordering of dense cell populations Dmitri Volfson*

    E-Print Network [OSTI]

    Hasty, Jeff

    Biomechanical ordering of dense cell populations Dmitri Volfson*§ , Scott Cookson* , Jeff Hasty. The biomechanical inter- actions arising from the growth and division of individual cells in confined environments of high-density bacterial colonies is spatial organization caused by the ``contact biomechanics'' arising

  13. Evolutionary Approachesto Population: Implications for Research and Policy

    E-Print Network [OSTI]

    Bock, John

    of New Mexico Evolutionary theory is becoming an increasingly important perspective in many so- cial sciencedisciplines. Ironically, the impact of evolutionary theory has been mini- mal in the study of human population although among the social sciences it is in demography and related fields that evolutionary approaches

  14. Predicting effects of dredging on a crab population

    E-Print Network [OSTI]

    fisheries has been of concern for several decades, but little work quantifying direct population impacts has prevent direct ap- plication of these models to dredge problems: Entrainment by dredges is short-term, has and disposal of dredged material are concerned with changes in in- faunal species assemblages and com- munity

  15. Population growth, distribution, and size in Latin America

    E-Print Network [OSTI]

    Lopez-Carr, David

    timber harvesting oil exploration/extraction population growth? degradation of lands in source areas history in Amazonia · Early extractive uses Rubber Forestry #12;Development history in Amazonia forests in the world 2) 45% of all the fresh water on the Earth 3) the planet's largest carbon sink 4

  16. Because fisheries often target older, larger fish, population productivity

    E-Print Network [OSTI]

    .g., Houde, 1987; reviewed in Heath, 1992; Bergenius et al., 2002). The assumption that the reproduc- tive storage, size, and survival are relat- ed to maternal age or size. The size of the oil globule is used of progeny can have direct impacts on population productivity. Rockfish are viviparous and the oil globule

  17. Testing for Ancient Admixture between Closely Related Populations

    E-Print Network [OSTI]

    Reich, David

    Testing for Ancient Admixture between Closely Related Populations Eric Y. Durand,*,1 Nick Patterson *Corresponding author: E-mail: eric.durand@berkeley.edu. Associate editor: Jonathan Pritchard Abstract One humans (for a review, see Wall and Hammer 2006). Methods for detecting and estimating archaic admixture

  18. On collisionless ion and electron populations in the

    E-Print Network [OSTI]

    Kaganovich, Igor

    On collisionless ion and electron populations in the Magnetic Nozzle Experiment S.A. Cohen, N;Magnetic Nozzle Experiment (MNX) · Explore physics of warm plasmas expanding along magnetic fields ­ Plasma to the physics ­ Advanced space-propulsion method (VASIMR) ­ Materials processing ­ Fusion #12;Plasm a Rocket

  19. Differentiation in sex investment by clones and populations of Daphnia

    E-Print Network [OSTI]

    Cáceres, Carla E.

    REPORT Differentiation in sex investment by clones and populations of Daphnia Alan J. Tessier1, conditions that favour dormancy are predicted to select for more sex, which should increase clonal diversity-round, and quantified the extent to which they have differentiated in their investment in dormancy and sex

  20. Introduction to Health Services Research Population Health 796

    E-Print Network [OSTI]

    Sheridan, Jennifer

    1 Introduction to Health Services Research Population Health 796 University of Wisconsin used in the field of health service research. What is health services research? Health services researchers focus on some of the most complex and challenging issues currently affecting health care

  1. Stochastic population dynamics: The Poisson approximation Hernan G. Solari*

    E-Print Network [OSTI]

    Natiello, Mario

    frequency transition rate that only depends on the state of the system 16 . This setting has been in terms of events such as death, birth, contagion, emission, absorption, etc., and we assume that the event-rates satisfy a generalized mass-action law. The dynamics of the populations is then the result

  2. Population Variation in Canonical Tree-based Genetic Programming

    E-Print Network [OSTI]

    Fernandez, Thomas

    variation schemes do have the capacity to provide solutions at a lower computational cost compared of research conducted to devise innovative methods to improve the efficiency of Genetic Programming with the Standard Genetic Programming. Thirdly, three innovations for dynamically varying the population size during

  3. Entrainment of a Population of Synthetic Genetic Oscillators

    E-Print Network [OSTI]

    Tsimring, Lev S.

    Entrainment of a Population of Synthetic Genetic Oscillators Octavio Mondragón-Palomino,1 Tal-sustained oscillators that adjust their phase to the daily environmental cycles in a process known as entrainment, but quantitative insights on the entrainment of clocks are relatively sparse. We simultaneously tracked the phases

  4. Europe and western Asia: genetics and population history

    E-Print Network [OSTI]

    18 Europe and western Asia: genetics and population history Mark G. Thomas, Toomas Kivisild, Lounes Chikhi, and Joachim Burger This chapter examines the genetic history of Europe during the past 20 have been used extensively to address three major questions on the demographic history of Europe: (1

  5. GDP Formulation of a segmented CDU Swing Cut Model for Refinery Planning

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    REFINERY FUEL RG LPG LN HN KN GO1 GO2 VGO VR1 VR2 C1 LPG LIGHT NAPHTHA PMS 98 MOGAS 95 JET FUEL AGO HGO HFO RG LPG R95 R100 RG LPG CN CGO RG Refinery Operation and Management - J.P. Favennec Crude Distillation

  6. GDP Formulation of a segmented CDU Swing Cut Model for Refinery Planning

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    HF REFINERY FUEL RG LPG LN HN KN GO1 GO2 VGO VR1 VR2 C1 LPG LIGHT NAPHTHA PMS 98 MOGAS 95 JET FUEL AGO HGO HFO RG LPG R95 R100 RG LPG CN CGO RG Refinery Operation and Management - J.P. Favennec Crude

  7. The Newsletter of the Lee Kuan Yew School of Public Policy GDP JunkiEs

    E-Print Network [OSTI]

    Chin, Wei Ngan

    10. Hydropower Consultations: inclusive Development or JustTalk? 11. City PlannersTackle urbanisation continue to surge ahead, it will demonstrate that the asian economic dynamic is developing an independent attention to environmental costs in the early phases of their growth. There is therefore a strong temptation

  8. Non-Destructive Analysis Calibration Standards for Gaseous Diffusion Plant (GDP) Decommissioning

    Broader source: Energy.gov [DOE]

    The decommissioning of Gaseous Diffusion Plant facilities requires accurate, non-destructive assay (NDA) of residual enriched uranium in facility components for safeguards and nuclear criticality...

  9. The effects of energy policies in China on GDP, industrial output and new energy profits1

    E-Print Network [OSTI]

    Lin, C.-Y. Cynthia

    -energy industries. None of the policies examined have any significant effect on the profits of new energy companies #12692193300). We thank Jieyin Zeng for providing the gasoline price data. Lin is a member of the Giannini

  10. Triploid bumblebees indicate a direct cost of inbreeding in fragmented populations

    E-Print Network [OSTI]

    in a model island system. Triploids were found in populations of both species. Observed triploid frequencies

  11. Notes and Discussion Vole Population Dynamics: Influence of Weather Extremes on Stoppage of

    E-Print Network [OSTI]

    Oli, Madan K.

    Notes and Discussion Vole Population Dynamics: Influence of Weather Extremes on Stoppage of Population Growth ABSTRACT.--Effects of 74 episodes of extreme weather on stoppage of population growth of extreme weather may have stopped population growth of only six M. ochrogaster fluctuations and of two M

  12. Parks Research Forum of Ontario ~ 197 ~ Long-term population estimates and synchronous

    E-Print Network [OSTI]

    Blouin-Demers, Gabriel

    Parks Research Forum of Ontario ~ 197 ~ Long-term population estimates and synchronous variation in two populations of black rat snakes (Elaphe obsoleta) in Eastern Ontario Marie-Ange Gravel and Gabriel Ontario. The Jolly-Seber method was used to estimate population size. The population sizes tended to vary

  13. Zebra Crossing Spotter: Automatic Population of Spatial Databases for Increased Safety of Blind Travelers

    E-Print Network [OSTI]

    Ahmetovic, Dragan; Manduchi, Roberto; Coughlan, James; Mascetti, Sergio

    2015-01-01

    Zebra Crossing Spotter: Automatic Population of Spatialdatasets. While fully automatic, our algorithm could also be

  14. STA4000 Final Report -Detailed Analysis Investigation on Iceland Population Growth and Climate

    E-Print Network [OSTI]

    Rosenthal, Jeffrey S.

    STA4000 Final Report - Detailed Analysis Investigation on Iceland Population Growth and Climate of Iceland Population Growth and Climate Change. 2 Data Source 2.1 Population of Iceland Iceland settler to Iceland is around 9th century. Iceland has a relative stable and simple population structure

  15. The young stellar population in M17 revealed by Chandra

    E-Print Network [OSTI]

    Patrick S. Broos; Eric D. Feigelson; Leisa K. Townsley; Konstantin V. Getman; Junfeng Wang; Gordon P. Garmire; Zhibo Jiang; Yohko Tsuboi

    2006-12-20

    We report here results from a Chandra ACIS observation of the stellar populations in and around the Messier 17 H II region. The field reveals 886 sources, 771 of which have stellar counterparts in infrared images. In addition to comprehensive tables of X-ray source properties, several results are presented: * The X-ray Luminosity Function is calibrated to that of the Orion Nebula Cluster population to infer a total population of roughly 8000--10,000 stars * About 40% of the ACIS sources are heavily obscured with A_V > 10 mag. Some are concentrated around well-studied star-forming regions but most are distributed across the field. X-ray emission is detected from 64 of the hundreds of Class I protostar candidates that can be identified by near- and mid-infrared colors. These constitute the most likely protostar candidates known in M17. * The spatial distribution of X-ray stars is complex: we find a new embedded cluster, a 2 pc-long arc of young stars along the southwest edge of the M17 H II region, and 0.1 pc substructure within various populations. These structures may indicate that the populations are dynamically young. * All (14/14) of the known O stars but only about half (19/34) of the known B0--B3 stars in the M17 field are detected. Six of these stars exhibit very hard thermal plasma components (kT>4 keV) that may be due to colliding wind binaries. More than 100 candidate new OB stars are found, including 28 X-ray detected intermediate- and high-mass protostar candidates with infrared excesses. * Only a small fraction (perhaps 10%) of X-ray selected high- and intermediate- mass stars exhibit K-band emitting protoplanetary disks, providing further evidence that inner disks evolve very rapidly around more massive stars.

  16. FORECASTING EMPLOYMENT & POPULATION IN TEXAS: An Investigation on TELUM Requirements, Assumptions, and Results, including a Study

    E-Print Network [OSTI]

    Kockelman, Kara M.

    -convex, non-linear optimization problem, which maximizes the entropy and thus the likelihood of the data and then compared with the district-based forecasts. The comparison showed some stark differences. For example distribution of low income households in Austin was completely different for district- and TAZ-based forecasts

  17. Procurement practices in state and local agencies within the Department of Energy low income weatherization assistance program. Final report. Task C

    SciTech Connect (OSTI)

    Not Available

    1983-05-01

    During the summer and fall of 1982, Arawak Consulting Corporation monitored a number of program management functions of the Low Income Weatherization Assistance Program in those states under the jurisdiction of the DOE Chicago Operations Office. Twenty grantees, plus 80 randomly selected subgrantees were monitored during the initial visit phase. An additional five subgrantees in three states were monitored as a part of the follow-up activities. While it appeared that almost all subgrantees and grantees were operating in accordance with DOE and other federal regulatory guidance, review of the monitoring instruments raised new concerns in several management areas. One of these areas is the procurement function of grantees and subgrantees. In response to questions raised by DOE concerning procurement, Arawak conducted a review of the information gathered during the initial monitoring effort, and recontacted by telephone 20 state weatherization directors. Arawak also requested that the grantees send copies of state-developed guidance pertaining to procurements. Objectives were to present a summary of the data analyzed and our findings regarding the procurement activities of grantees and subgrantees.

  18. A Dynamical Signature of Multiple Stellar Populations in 47 Tucanae

    E-Print Network [OSTI]

    Richer, Harvey B; Anderson, Jay; Kalirai, Jason S; Shara, Michael M; Dotter, Aaron; Fahlman, Gregory G; Rich, R Michael

    2013-01-01

    Based on the width of its main sequence, and an actual observed split when viewed through particular filters, it is widely accepted that 47 Tucanae contains multiple stellar populations. In this contribution, we divide the main-sequence of 47 Tuc into four color groups, which presumably represent stars of various chemical compositions. The kinematic properties of each of these groups is explored via proper-motions, and a strong signal emerges of differing proper-motion anisotropies with differing main-sequence color; the bluest main-sequence stars exhibit the largest proper-motion anisotropy which becomes undetectable for the reddest stars. In addition, the bluest stars are also the most centrally concentrated. A simiilar analysis for SMC stars, which are located in the background of 47 Tuc on our frames, yields none of the anisotropy exhibited by the 47 Tuc stars. We discuss implications of these results for possible formation scenarios of the various populations.

  19. Setting the stellar evolution clock for intermediate age populations

    E-Print Network [OSTI]

    R. Jimenez

    1999-06-04

    In this invited talk I show how the reddest and rarest galaxies at high redshift ($z \\simeq 1.5$) can be used to set the stellar evolution clock. I argue that one can confidently compute the collapse redshift of these objects. This yields to a high collapse redshift ($z>6$) and therefore their age is well constrained (in all cosmologies) between 3 and 4 Gyr. I also show that this is, indeed, the age derived using a variety of synthetic stellar population models when proper statistical tools are used to analyse their observed spectral energy distribution. This allows me to conclude that all stellar population models yield to the same consistent age for these galaxies, i.e. about 3.5 Gyr and that the stellar clock is properly set. Low ages are therefore excluded with high confidence.

  20. 2007 Microbial Population Biology (July 22-26, 2007)

    SciTech Connect (OSTI)

    Anthony M. Dean

    2008-04-01

    Microbial Population Biology covers a diverse range of cutting edge issues in the microbial sciences and beyond. Firmly founded in evolutionary biology and with a strongly integrative approach, past meetings have covered topics ranging from the dynamics and genetics of adaptation to the evolution of mutation rate, community ecology, evolutionary genomics, altruism, and epidemiology. This meeting is never dull: some of the most significant and contentious issues in biology have been thrashed out here. We anticipate the 2007 meeting being no exception. The final form of the 2007 meeting is yet to be decided, but the following topics are likely to be included: evolutionary emergence of infectious disease and antibiotic resistance, genetic architecture and implications for the evolution of microbial populations, ageing in bacteria, biogeography, evolution of symbioses, the role of microbes in ecosystem function, and ecological genomics.

  1. Population Genetic Study of the Chewing Louse Geomydoecus ewingi 

    E-Print Network [OSTI]

    Nessner, Caitlin Elizabeth

    2014-04-30

    POPULATION GENETIC STUDY OF THE CHEWING LOUSE GEOMYDOECUS EWINGI A Thesis by CAITLIN ELIZABETH NESSNER Submitted to the Office of Graduate and Professional Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE Chair of Committee, Jessica Light Committee Members, Gary Voelker Gregory Sword Head of Department, Michael Masser May 2014 Major Subject: Wildlife and Fisheries Sciences Copyright 2014 Caitlin Elizabeth...

  2. Can Population III Stars at High Redshifts produce GRB's?

    E-Print Network [OSTI]

    C. Sivaram; Kenath Arun

    2010-08-24

    Gamma ray bursts are the most luminous physical phenomena in the universe, consisting of flashes of gamma rays that last from seconds to hours. There have been attempts to observe gamma ray bursts, for example, from population III stars of about 500 solar mass at high redshifts. Here we argue that collapse of such high mass stars does not lead to gamma ray burst as their core collapse temperatures are not sufficient to produce gamma rays, leading to GRBs.

  3. The use of vasectomy in stray cat population control 

    E-Print Network [OSTI]

    Mahlow, Jane Caryl

    1995-01-01

    : Margaret R. Slater (Chair of committee) Harry . Soothe (Member) Leon H. Russell (Member) Gerald Bratton (Head of Department) May 1995 Major Subject: Veterinary public Health ABSTRACT The Use of Vasectomy in Stray Cat Population Control. (May... 1995) Jane Caryl Mahlow, B. S. , College of St. Francis; D. V. M. , University of Illinois Chair of Advisory Committee: Dr. Margaret R. Slater Despite concerted efforts by animal control agencies and animal welfare advocates, stray cats continue...

  4. Sociological adaptation among bacterial populations in an activated sludge ecosystem 

    E-Print Network [OSTI]

    Forrest, Robert George

    1970-01-01

    SOCIOLOGICAL ADAPTATION AMONG BACTERIAL POPULATIONS IN AN ACT1VATED SLUDGE ECOSYSTEM A Thesis by Robert George Forrest Submitted to the Graduate College of Texas ARK University in partial flilfillment of the requirements for the degree... of MASTER OF SCIENCE January, 1970 Major Subject& Microbiology SOCIOLOGICAL ADAPTATION AMONG BACTERIAL POPULkTIONS IN AN ACTIVATE) SLUDGE ECOSYSTEM A Thesis by Robert George Forrest Approved as to style and content by& (Co-Chairman of Committee) (Co...

  5. Stellar populations of massive elliptical galaxies in very rich clusters

    E-Print Network [OSTI]

    Carretero, C; Beckman, J E

    2006-01-01

    We present a detailed stellar population analysis of 27 massive elliptical galaxies within 4 very rich clusters at redshift z~0.2: A115, A655, A963 and A2111. Using the new, high-resolution stellar populations models developed in our group, we obtained accurate estimates of the mean luminosity-weighted ages and relative abundances of CN, Mg and Fe. We have found that [CN/H] and [Mg/H] are correlated with sigma while [Fe/H] and Log(age) are not. In addition, both abundance ratios [CN/Fe] and [Mg/Fe] increase with sigma. Furthermore, the [CN/H]-sigma and [CN/Fe]-sigma slopes are steeper for galaxies in very rich clusters than those in the less dense Virgo and Coma clusters. On the other hand, [Mg/H]-sigma and [Mg/Fe]-sigma slopes keep constant as functions of the environment. Our results are compatible with a scenario in which the stellar populations of massive elliptical galaxies, independently of their environment and mass, had formation timescales shorter than ~1 Gyr. This result implies that massive ellipti...

  6. Unveiling the population of orphan Gamma Ray Bursts

    E-Print Network [OSTI]

    Ghirlanda, G; Campana, S; Vergani, S D; Japelj, J; Bernardini, M G; Burlon, D; D'Avanzo, P; Melandri, A; Gomboc, A; Nappo, F; Paladini, R; Pescalli, A; Salafia, O S; Tagliaferri, G

    2015-01-01

    Gamma Ray Bursts are detectable in the gamma-ray band if their jets are oriented towards the observer. However, for each GRB with a typical theta_jet, there should be ~2/theta_jet^2 bursts whose emission cone is oriented elsewhere in space. These off-axis bursts can be eventually detected when, due to the deceleration of their relativistic jets, the beaming angle becomes comparable to the viewing angle. Orphan Afterglows (OA) should outnumber the current population of bursts detected in the gamma-ray band even if they have not been conclusively observed so far at any frequency. We compute the expected flux of the population of orphan afterglows in the mm, optical and X-ray bands through a population synthesis code of GRBs and the standard afterglow emission model. We estimate the detection rate of OA by on-going and forthcoming surveys. The average duration of OA as transients above a given limiting flux is derived and described with analytical expressions: in general OA should appear as daily transients in o...

  7. Bias and population structure in the actuation of sound change

    E-Print Network [OSTI]

    Kirby, James

    2015-01-01

    Why do human languages change at some times, and not others? We address this longstanding question from a computational perspective, focusing on the case of sound change. Sound change arises from the pronunciation variability ubiquitous in every speech community, but most such variability does not lead to change. Hence, an adequate model must allow for stability as well as change. Existing theories of sound change tend to emphasize factors at the level of individual learners promoting one outcome or the other, such as channel bias (which favors change) or inductive bias (which favors stability). Here, we consider how the interaction of these biases can lead to both stability and change in a population setting. We find that population structure itself can act as a source of stability, but that both stability and change are possible only when both types of bias are active, suggesting that it is possible to understand why sound change occurs at some times and not others as the population-level result of the inte...

  8. Income tax problems of partnerships 

    E-Print Network [OSTI]

    Harrell, Clyde Wallace

    1951-01-01

    the revenue laws. The fundamental 1ncpcizy concerns the intention of the ysrties ss disclosed by theM agreement and by their conduct. Xn deciding whether s business entity is a psrtmership or an association, the decision often turns on 1X. a. C. , Sec... return. Partnerihi s The so-cslle4 "fsmiIy partnership" is a partnership vhose members sre closely related, The Bureau oi' Internal Revenue refuses to recognise such partnershiys vhen they represent tax avoidance schemes vithout bona fide partners...

  9. Energy policy: Comparative effects on minority population groups

    SciTech Connect (OSTI)

    Poyer, D.A.; Henderson, L.

    1995-06-01

    For a number of years, analyses of minority household energy demand have been supported by the United States Department of Energy (DOE), Office of Economic Impact and Diversity (formerly the Office of Minority Economic Impact). The intention of these analyses has been to characterize patterns of energy demand by various demographic, regional and socioeconomic groups and to develop analytical tools to assess the distributive impact of energy prices and policy on these groups. The model supports strategic objectives outlined by the Department of Energy to explicitly recognize and promote equity in state public utility commission decisions and to assess the potential impact of federal and state energy policy on demographically diverse groups as reported in the Department`s Annual Energy Outlook and the upcoming National Energy Policy Plan. The legislation mandating the Office of Economic Impact and Diversity had been premised on the assumption that patterns of energy demand for minority households are different from the population as a whole. Determining the validity of this premise and its potential economic impact on different population groups has been a major objective of these analyses. Consequently, the recripriocal impacts of energy policy on demographic groups and energy consumption and expenditure dynamics on policy formulation and strategy is a central objective of these studies. Residential energy demand research has been substantial in the past twenty years. Insightful and useful research has been done in this area. However, none of this research has addressed the potential differences in the residential energy demand structure among various population groups. Recent work does compare energy and electricity demand elasticities for non-Latino Whites, with the demand elasticities for Latinos and Blacks. This research is particularly important for examination of questions related to the economic welfare implications of national energy policy.

  10. Stellar populations of massive elliptical galaxies in very rich clusters

    E-Print Network [OSTI]

    C. Carretero; A. Vazdekis; J. E. Beckman; .

    2006-12-05

    We present a detailed stellar population analysis of 27 massive elliptical galaxies within 4 very rich clusters at redshift z~0.2: A115, A655, A963 and A2111. Using the new, high-resolution stellar populations models developed in our group, we obtained accurate estimates of the mean luminosity-weighted ages and relative abundances of CN, Mg and Fe. We have found that [CN/H] and [Mg/H] are correlated with sigma while [Fe/H] and Log(age) are not. In addition, both abundance ratios [CN/Fe] and [Mg/Fe] increase with sigma. Furthermore, the [CN/H]-sigma and [CN/Fe]-sigma slopes are steeper for galaxies in very rich clusters than those in the less dense Virgo and Coma clusters. On the other hand, [Mg/H]-sigma and [Mg/Fe]-sigma slopes keep constant as functions of the environment. Our results are compatible with a scenario in which the stellar populations of massive elliptical galaxies, independently of their environment and mass, had formation timescales shorter than ~1 Gyr. This result implies that massive elliptical galaxies have evolved passively since, at least, as long ago as z~2. For a given galaxy mass the duration of star formation is shorter in those galaxies belonging to more dense environments; whereas the mass-metallicity relation appears to be also a function of the cluster properties: the denser the environment is, the steeper are the correlations. Finally, we show that the abundance ratios [CN/Fe] and [Mg/Fe] are the key "chemical clocks" to infer the star formation history timescales in ellipticals. In particular, [Mg/Fe] provides an upper limit for those formation timescales, while [CN/Fe] apperars to be the most suitable parameter to resolve them in elliptical galaxies with sigma<300 km/s.

  11. Development of Algorithms to Estimate Post-Disaster Population Dislocation--A Research-Based Approach 

    E-Print Network [OSTI]

    Lin, Yi-Sz

    2010-10-12

    This study uses an empirical approach to develop algorithms to estimate population dislocation following a natural disaster. It starts with an empirical reexamination of the South Dade Population Impact Survey data, ...

  12. Population Dynamics and Tropical Deforestation: State of the Debate and Conceptual Challenges

    E-Print Network [OSTI]

    Lopez-Carr, David

    ); population. Please address correspondence to David L. Carr, University of California, Santa Barbara, CA, USAPopulation Dynamics and Tropical Deforestation: State of the Debate and Conceptual Challenges David L. Carr Laurel Suter University of California Alisson Barbieri Carolina Population Center What

  13. Trophic plasticity and fine-grained resource variation in populations of western mosquitofish, Gambusia affinis

    E-Print Network [OSTI]

    DeWitt, Thomas J.

    Trophic plasticity and fine-grained resource variation in populations of western mosquitofish ABSTRACT Hypothesis: Fish will exhibit morphological plasticity in response to how (food type: live vs, population differentiation, resource polymorphism, trophic plasticity. INTRODUCTION Natural environments vary

  14. Parasite mediated selection, sex and diapause in a natural population of Daphnia 

    E-Print Network [OSTI]

    Duncan, Alison B

    Parasites are thought to have large effects on their host populations, driving genetic change, population density changes, speciation and be a major selective force maintaining sexual reproduction. Indirect signatures of ...

  15. Microbial individuality: how single-cell heterogeneity enables population level strategies

    E-Print Network [OSTI]

    Martins, Bruno M. C.; Locke, James C. W.

    2015-02-05

    mechanisms. • Phenotypic diversity can implement population level functions. Much of our knowledge of microbial life is only a description of average population behaviours, but modern technologies provide a more inclusive view and reveal that microbes...

  16. ENCYCLOPEDIA OF LIFE SCIENCES Population genetics: multilocus (article reference code: 1783)

    E-Print Network [OSTI]

    Gavrilets, Sergey

    Page 1 ENCYCLOPEDIA OF LIFE SCIENCES Population genetics: multilocus (article reference code: 1783) Sergey Gavrilets Departments of Ecology and Evolutionary Biology and Mathematics University of Tennessee variation at several loci in biological populations. Haplotypes Even the simplest known biological organisms

  17. Characterization of the U.S. Industrial/Commercial Boiler Population...

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

    U.S. IndustrialCommercial Boiler Population - Final Report, May 2005 Characterization of the U.S. IndustrialCommercial Boiler Population - Final Report, May 2005 The U.S....

  18. Demographic parameters of the feral cat Felis catus population at Marion Island

    E-Print Network [OSTI]

    Pretoria, University of

    Demographic parameters of the feral cat Felis catus population at Marion Island R.J. van Aarde Introduction The presence of established feral domestic cat relis catus L. populations on several southern

  19. Theoretical Population Biology 52, 60 70 (1997) Modelling the Feline Leukemia Virus (FeLV) in

    E-Print Network [OSTI]

    Courchamp, Franck

    1997-01-01

    LV) in Natural Populations of Cats (Felis catus) Emmanuelle Fromont1 UMR CNRS 5558, Universite Claude Bernard), and its impact in natural populations of domestic cats (Felis catus). For the study we built

  20. Genealogical constructions of population models Alison M. Etheridge Thomas G. Kurtz

    E-Print Network [OSTI]

    Kurtz, Tom

    Genealogical constructions of population models Alison M. Etheridge Thomas G. Kurtz Department, Moran model, lookdown construction, genealogies, voter model, generators, stochastic equations, Lambda number of individuals in the population is used to infer the `genealogical trees' that relate those genes

  1. The Population of Texas: A Decade of Change. 

    E-Print Network [OSTI]

    Skrabanek, R. L.; Upham, W. Kennedy

    1974-01-01

    in 1970. The state ranked sixth in 1960 and surpassed Ohio and Illinois during the 1960-70 decade. states hill- ing larger populations than Texas in 1970 were California. New York and Pennsylvania. Assuming that the populd- tions of different states.... Further, a gain from net in-migration occurs when more people move into an area than move out during a nlven period. Th figures for net migration employed in :h~s publication are estimates made for the 1960-70 de- cade in the following manner...

  2. Four New BL Lac Surveys: Sampling New Populations

    E-Print Network [OSTI]

    S. A. Laurent-Muehleisen; R. H. Becker; W. Brinkmann; J. Siebert; E. D. Feigelson; R. I. Kollgaard; G. D. Schmidt; P. S. Smith

    1998-10-15

    The advent of large area deep radio and X-ray surveys is leading to the creation of many new BL Lac samples. In particular, the ROSAT All-Sky, Green Bank and FIRST surveys are proving to be rich sources of new BL Lacs. We will discuss the methods used in four independent BL Lac searches based on these surveys. Comparison of the broadband spectral energy distributions of these BL Lacs with those of previously known objects clearly points to the existence of a large previously unrecognized population of objects with characteristics intermediate between those exhibited by Low and High energy peaked BL Lacs.

  3. ON THE FORMATION OF MULTIPLE STELLAR POPULATIONS IN GLOBULAR CLUSTERS

    SciTech Connect (OSTI)

    Charlie, Conroy; Spergel, David N. [Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States)

    2011-01-01

    Nearly all globular clusters (GCs) studied to date show evidence for multiple stellar populations, in stark contrast to the conventional view that GCs are a mono-metallic, coeval population of stars. This generic feature must therefore emerge naturally within massive star cluster formation. Building on earlier work, we propose a simple physical model for the early evolution (several 10{sup 8} yr) of GCs. We consider the effects of stellar mass loss, Type II supernovae (SNe II) and prompt Type Ia supernovae (SNe Ia), ram pressure, and accretion from the ambient interstellar medium (ISM) on the development of a young GC's own gas reservoir. In our model, SNe II from a first generation of star formation clears the GC of its initial gas reservoir. Over the next several 10{sup 8} yr, mass lost from asymptotic giant branch stars and matter accreted from the ambient ISM collect at the center of the GC. This material must remain quite cool (T {approx} 10{sup 2} K), but does not catastrophically cool on a crossing time because of the high Lyman-Werner flux density in young GCs. The collection of gas within the GC must compete with ram pressure from the ambient ISM. After several 10{sup 8} yr, the Lyman-Werner photon flux density drops by more than three orders of magnitude, allowing molecular hydrogen and then stars to form. After this second generation of star formation, SNe II from the second generation and then prompt SNe Ia associated with the first generation maintain a gas-free GC, thereby ending the cycle of star formation events. Our model makes clear predictions for the presence or absence of multiple stellar populations within GCs as a function of GC mass and formation environment. While providing a natural explanation for the approximately equal number of first- and second-generation stars in GCs, substantial accretion from the ambient ISM may produce fewer chemically peculiar second-generation stars than are observed. Analyzing intermediate-age LMC clusters, we find for the first time evidence for a mass threshold of {approx}10{sup 4} M{sub sun} below which LMC clusters appear to be truly coeval. This threshold mass is consistent with our predictions for the mass at which ram pressure is capable of clearing gas from clusters in the LMC at the present epoch. Recently, claims have been made that multiple populations within GCs require that GCs form at the center of their own dark matter halos. We argue that such a scenario is implausible. Observations of the young and intermediate-age clusters in the LMC and M31 will provide strong constraints on our proposed scenario.

  4. A Unifying Theory for Scaling Laws of Human Populations

    E-Print Network [OSTI]

    Lin, Henry W

    2015-01-01

    The spatial distribution of people exhibits clustering across a wide range of scales, from household (~$10^{-2}$ km) to continental (~$10^4$ km) scales. Empirical data indicates simple power-law scalings for the size distribution of cities (known as Zipf's law), the geographic distribution of friends, and the population density fluctuations as a function of scale. We derive a simple statistical model that explains all of these scaling laws based on a single unifying principle involving the random spatial growth of clusters of people on all scales. The model makes important new predictions for the spread of diseases and other social phenomena.

  5. Population of 195Os via a deep-inelastic reaction

    SciTech Connect (OSTI)

    Valiente-Dobon, J.J.; Wheldon, C.; Regan, P.H.; Langdown, S.D.; Yamamoto, A.D.; Wu, C.Y.; Cline, D.; Hayes, A.; Hua, H.; Teng, R.; Andreoiu, C.; Svensson, C.E.; Chapman, R.; Liang, X.; Fallon, P.; Lee, I.Y.; Macchiavelli, A.O.; Ward, D.; Freeman, S. J.; Smith, J.F.

    2004-09-13

    The present work reports on the {sub 76}{sup 195}Os isotope, which is the most neutron-rich osmium isotope for which transitions have been measured. It has been populated following a multi-nucleon transfer reaction between a thin {sub 78}{sup 198}Pt target and an 850-MeV {sub 54}{sup 136}Xe beam. Evidence from {gamma}-ray coincidences has been found for an I{sup {pi}} = ((27/2){sup -}) isomeric state with a measured half-life of 26 {+-} 9ns.

  6. The Dark Energy Survey: Prospects for Resolved Stellar Populations

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

    Rossetto, Bruno M [Rio de Janeiro Observ.; Santiago, Basilio X [Rio Grande do Sul U.; Rio de Janeiro Observ.; Girardi, Leo [Padua Observ.; Rio de Janeiro Observ.; Camargo, Julio I.B. [Rio de Janeiro Observ.; Balbinot, Eduardo [Rio Grande do Sul U.; Rio de Janeiro Observ.; da Costa, Luiz N [Rio de Janeiro Observ.; Yanny, Brian [Fermilab; Maia, Marcio A.G. [Rio de Janeiro Observ.; Makler, Martin [Rio de Janeiro, CBPF; Rio de Janeiro Observ.; Ogando, Ricardo L.C. [Rio de Janeiro Observ.; Pellegrini, Paulo S [Rio de Janeiro Observ.; Rio de Janeiro Observ.

    2011-05-06

    Wide angle and deep surveys, regardless of their primary purpose, always sample a large number of stars in the Galaxy and in its satellite system. We here make a forecast of the expected stellar sample resulting from the Dark Energy Survey and the perspectives that it will open for studies of Galactic structure and resolved stellar populations in general. An estimated 1.2 x 10{sup 8} stars will be sampled in DES grizY filters in the southern equatorial hemisphere. This roughly corresponds to 20% of all DES sources. Most of these stars belong to the stellar thick disk and halo of the Galaxy.

  7. THE DARK ENERGY SURVEY: PROSPECTS FOR RESOLVED STELLAR POPULATIONS

    SciTech Connect (OSTI)

    Rossetto, Bruno M.; Santiago, Basílio X.; Girardi, Léo; Camargo, Julio I. B.; Balbinot, Eduardo; da Costa, Luiz N.; Yanny, Brian; Maia, Marcio A. G.; Makler, Martin; Ogando, Ricardo L. C.; Pellegrini, Paulo S.; Ramos, Beatriz; de Simoni, Fernando; Armstrong, R.; Bertin, E.; Desai, S.; Kuropatkin, N.; Lin, H.; Mohr, J. J.; Tucker, D. L.

    2011-06-01

    Wide angle and deep surveys, regardless of their primary purpose, always sample a large number of stars in the Galaxy and in its satellite system. We here make a forecast of the expected stellar sample resulting from the Dark Energy Survey and the perspectives that it will open for studies of Galactic structure and resolved stellar populations in general. An estimated 1.2 x 108 stars will be sampled in DES grizY filters in the southern equatorial hemisphere. This roughly corresponds to 20% of all DES sources. Most of these stars belong to the stellar thick disk and halo of the Galaxy.

  8. THE DARK ENERGY SURVEY: PROSPECTS FOR RESOLVED STELLAR POPULATIONS

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

    Rossetto, Bruno M.; Santiago, Basílio X.; Girardi, Léo; Camargo, Julio I. B.; Balbinot, Eduardo; da Costa, Luiz N.; Yanny, Brian; Maia, Marcio A. G.; Makler, Martin; Ogando, Ricardo L. C.; et al

    2011-06-01

    Wide angle and deep surveys, regardless of their primary purpose, always sample a large number of stars in the Galaxy and in its satellite system. We here make a forecast of the expected stellar sample resulting from the Dark Energy Survey and the perspectives that it will open for studies of Galactic structure and resolved stellar populations in general. An estimated 1.2 x 108 stars will be sampled in DES grizY filters in the southern equatorial hemisphere. This roughly corresponds to 20% of all DES sources. Most of these stars belong to the stellar thick disk and halo of themore »Galaxy.« less

  9. Population and community ecology of the rare plant amsinckia grandiflora

    SciTech Connect (OSTI)

    Carlsen, T.M.

    1996-11-01

    Research was conducted between the fall of 1992 and the spring on the population and community ecology of the rare annual plant, Amsinckia glandiflora (Gray) Kleeb. ex Greene (Boraginaceae). The research goal was to investigate the causes of the species rarity, data useful to restorative efforts. The work focused on the examination of competitive suppression by exotic annual grasses; comparisons with common, weedy congener; and the role of litter cover and seed germination and seedling establishment. Annual exotic grasses reduced A. grandiflora reproductive output to a greater extent than did the native perennial bunch grass.

  10. Unveiling the distribution of absorption in the AGN population

    E-Print Network [OSTI]

    Tom Dwelly; Mathew J. Page

    2005-11-15

    We use the very deep XMM-Newton observations in the CDF-S to measure the distribution of absorption in the AGN population. We describe the Monte Carlo method used to unveil the intrinsic properties of the AGN using their multi-band X-ray colours. The measured distribution of AGN in z, L_X and N_H space is compared with the distributions predicted by a number of XLFs and absorption models. In contrast to other studies, we do not find any evidence that the absorption distribution is dependent on redshift or intrinsic luminosity.

  11. Population viability analysis of the Endangered shortnose sturgeon

    SciTech Connect (OSTI)

    Jager, Yetta; Bevelhimer, Mark S; Peterson, Douglas L.

    2011-07-01

    This study used population viability analysis (PVA) to partition the influences of potential threats to the endangered shortnose sturgeon (Acipenser brevirostrum). A workshop brought together experts to help identify potential threats including groundwater withdrawal, poor water quality, saltwater intrusion, mercury effects, harvest as by-catch, and sedimentation of spawning habitat. During the course of the project, we eliminated some threats and added new ones. Groundwater withdrawal was dismissed after a study failed to identify connection with groundwater and the majority of pumping is from a confined aquifer. We also eliminated activities on Fort Stewart as influences on spawning habitat because any successful spawning must occur upstream of Fort Stewart. We added climate change to the list of threats based on our assessment of temperature effects and expectations of sea-level rise. Our study highlighted the role of populations in nearby rivers in providing metapopulation support, raising the concern that the population in the Ogeechee River acts as a demographic sink. As part of this study, we carried out a field sampling study to analyze effects of training activities on headwater streams. We developed a new methodology for sampling design as part of this effort and used a mixed-modeling approach to identify relationships between land cover-land use, including those associated with military training activity and water quality. We found that tank training was associated with higher suspended sediment and equipment training was associated with higher organic carbon) and water quality. We detected effects of training on suspended sediment and organic carbon. We also carried out a field sampling effort in the Canoochee and Ogeechee Rivers. In the Ogeechee River, we found that dissolved oxygen in 40% of measurements during summer were below 4 mg L-1. To evaluate mercury as a potential threat, we developed a mercury uptake model and analyzed mercury levels in amphipod prey and sturgeon eggs. These did not exceed EPA guidelines. Finally, we developed a PVA model that including linkages between shortnose sturgeon growth, reproduction, and survival and each remaining threat; All three had significant influences. Preliminary simulations suggest that elevated temperatures under future climate will extirpate this population and add support to the hypothesis that this species requires access to spawning habitat far upstream to persist.

  12. Forecasting changes in population genetic structure of alpine plants in response to global warming

    E-Print Network [OSTI]

    François, Olivier

    Forecasting changes in population genetic structure of alpine plants in response to global warming the European Alps, we applied this approach to 20 alpine plant species considering a global increase populations potentially adapted to warmer environments and other populations. While a global trend of movement

  13. The impacts of population change on carbon emissions in China during 1978-2008

    SciTech Connect (OSTI)

    Zhu Qin, E-mail: zhuqin@fudan.edu.cn; Peng Xizhe, E-mail: xzpeng@fudan.edu.cn

    2012-09-15

    This study examines the impacts of population size, population structure, and consumption level on carbon emissions in China from 1978 to 2008. To this end, we expanded the stochastic impacts by regression on population, affluence, and technology model and used the ridge regression method, which overcomes the negative influences of multicollinearity among independent variables under acceptable bias. Results reveal that changes in consumption level and population structure were the major impact factors, not changes in population size. Consumption level and carbon emissions were highly correlated. In terms of population structure, urbanization, population age, and household size had distinct effects on carbon emissions. Urbanization increased carbon emissions, while the effect of age acted primarily through the expansion of the labor force and consequent overall economic growth. Shrinking household size increased residential consumption, resulting in higher carbon emissions. Households, rather than individuals, are a more reasonable explanation for the demographic impact on carbon emissions. Potential social policies for low carbon development are also discussed. - Highlights: Black-Right-Pointing-Pointer We examine the impacts of population change on carbon emissions in China. Black-Right-Pointing-Pointer We expand the STIRPAT model by containing population structure factors in the model. Black-Right-Pointing-Pointer The population structure includes age structure, urbanization level, and household size. Black-Right-Pointing-Pointer The ridge regression method is used to estimate the model with multicollinearity. Black-Right-Pointing-Pointer The population structure plays a more important role compared with the population size.

  14. Proportionally more deleterious genetic variation in European than in African populations

    E-Print Network [OSTI]

    Nielsen, Rasmus

    LETTERS Proportionally more deleterious genetic variation in European than in African populations with previous work showing higher overall levels of nucleotide variation in African populations than than AAs do. For SNPs segregating only in one population or the other, the proportion of non

  15. Viability Analysis of Reef Fish Populations Based on Limited Demographic Information

    E-Print Network [OSTI]

    Gerber, Leah R.

    of California, Mexico, to construct a matrix population model that incorporated the effects of El Ni~no/La Ni~na Southern Oscillation on population dynamics. An environmental model that estimated different demographic present conditions. Although the impact of fishing on leopard grouper populations in the MPA has not yet

  16. Regional Climate Effect on Population Abundance of Major Duck Species in Interior Plains of Canada 

    E-Print Network [OSTI]

    Sun, Mengmeng

    2013-05-06

    to the long-term breeding population data gathered by Waterfowl Breeding Population and Habitat Survey and monthly weather data from Environment Canada in order to explore the pattern in the duck abundance data and the effect of local weather on population...

  17. Solar ultraviolet-B radiation and vitamin D: a cross-sectional population-based study

    E-Print Network [OSTI]

    Wirosoetisno, Djoko

    Solar ultraviolet-B radiation and vitamin D: a cross-sectional population-based study using data, J. A. (2012) Solar ultraviolet-B radiation and vitamin D: a cross-sectional population-based study Access Solar ultraviolet-B radiation and vitamin D: a cross-sectional population-based study using data

  18. Estimating low-density snowshoe hare populations using fecal pellet counts

    E-Print Network [OSTI]

    Estimating low-density snowshoe hare populations using fecal pellet counts Dennis L. Murray, James americanus) populations found at high densities can be estimated using fecal pellet densities on rectangular of fecal pellet plots for estimating hare populations by correlating pellet densities with estimated hare

  19. Fracture populations on the Reykjanes Peninsula, Iceland: Comparison with experimental clay models of oblique rifting

    E-Print Network [OSTI]

    Fracture populations on the Reykjanes Peninsula, Iceland: Comparison with experimental clay models have used high-resolution scanned air photos and field measurements to analyze fracture population on the evolution of fracture populations on the Reykjanes Peninsula, SW Iceland. The peninsula is oriented

  20. STA4000 Final Report -Summary Investigation on Iceland Population Growth and Climate

    E-Print Network [OSTI]

    Rosenthal, Jeffrey S.

    STA4000 Final Report - Summary Investigation on Iceland Population Growth and Climate Change CHEN is to investigate the relationship between the Iceland population growth and the climate change before the industrialization. The reason we choose Iceland is it has a relative stable and simple population structure (Most

  1. Faculty of Medicine, Primary Care and Population Sciences PhD/DM students Name Title Email

    E-Print Network [OSTI]

    Huang, Xun

    Faculty of Medicine, Primary Care and Population Sciences ­ PhD/DM students Name Title Email Primary Supervisor in Faculty of Medicine, Primary Care and Population Sciences Professor Paul Roderick Fraser. Dmt1g15@soton.ac.uk Primary Supervisor in Faculty of Medicine, Primary Care and Population

  2. POPULATION OF FERAL CATS FELIS CATUS. R.J. van Aarde

    E-Print Network [OSTI]

    Pretoria, University of

    ( POPULATION OF FERAL CATS FELIS CATUS. c\\J1 R.J. van Aarde Mammal Research Institute university. Cambridge, Mass. 02238 U.S.A. Abstract: Body and adrenal weight in a population of feral cats, Felis catus of Felis catus are now distributed worldwide and in many regions such populations are, in part, fostered

  3. A coalescent model for the effect of advantageous mutations on the genealogy of a population

    E-Print Network [OSTI]

    Durrett, Richard

    A coalescent model for the effect of advantageous mutations on the genealogy of a population in this paper is to describe the coalescent processes that arise when we consider the genealogy of a population individuals at random from this population at time zero. To describe the genealogy of the sample, we

  4. Radio faint AGN: a tale of two populations

    E-Print Network [OSTI]

    Padovani, P; Kellermann, K I; Miller, N; Mainieri, V; Tozzi, P

    2015-01-01

    We study the Extended Chandra Deep Field South (E-CDFS) Very Large Array sample, which reaches a flux density limit at 1.4 GHz of 32.5 microJy at the field centre and redshift ~ 4, and covers ~ 0.3 deg^2. Number counts are presented for the whole sample while the evolutionary properties and luminosity functions are derived for active galactic nuclei (AGN). The faint radio sky contains two totally distinct AGN populations, characterised by very different evolutions, luminosity functions, and Eddington ratios: radio-quiet (RQ)/radiative-mode, and radio-loud/jet-mode AGN. The radio power of RQ AGN evolves ~ (1+z)^2.5, similarly to star-forming galaxies, while the number density of radio-loud ones has a peak at ~ 0.5 and then declines at higher redshifts. The number density of radio-selected RQ AGN is consistent with that of X-ray selected AGN, which shows that we are sampling the same population. The unbiased fraction of radiative-mode RL AGN, derived from our own and previously published data, is a strong funct...

  5. The RR Lyrae Variable Population in the Phoenix Dwarf Galaxy

    E-Print Network [OSTI]

    Ordoñez, Antonio J; Sarajedini, Ata

    2014-01-01

    We present the first detailed study of the RR Lyrae variable population in the Local Group dSph/dIrr transition galaxy, Phoenix, using previously obtained HST/WFPC2 observations of the galaxy. We utilize template light curve fitting routines to obtain best fit light curves for RR Lyrae variables in Phoenix. Our technique has identified 78 highly probable RR Lyrae stars (54 ab-type; 24 c-type) with about 40 additional candidates. We find mean periods for the two populations of $\\langle P_{ab}\\rangle = 0.60 \\pm 0.03$ days and $\\langle P_{c}\\rangle = 0.353 \\pm 0.002$ days. We use the properties of these light curves to extract, among other things, a metallicity distribution function for ab-type RR Lyrae. Our analysis yields a mean metallicity of $\\langle [Fe/H]\\rangle = -1.68 \\pm 0.06$ dex for the RRab stars. From the mean period and metallicity calculated from the ab-type RR Lyrae, we conclude that Phoenix is more likely of intermediate Oosterhoff type; however the morphology of the Bailey diagram for Phoenix R...

  6. Table S1. Native American populations included in this study, and the coordinates used for their sampling locations. Population name in

    E-Print Network [OSTI]

    Rosenberg, Noah

    Table S1. Native American populations included in this study, and the coordinates used at 66.08ºN 76.5ºE. #12;Table S2. Languages of the Native American populations included in this study

  7. Remarkable waxing, waning, and wandering of populations of Mimulus guttatus: An unexpected example of global warming

    SciTech Connect (OSTI)

    Vickery, R.K. Jr.

    1999-04-01

    The purpose of this study was to observe the dynamics of a meta-population of Mimulus guttatus. Changes in size and location of 16 original populations and the new populations established in their vicinities in Big Cottonwood Canyon, Salt Lake county, Utah, were observed for 25 yr. Twenty-three new populations appeared. Seven original populations and 13 new populations had become extinct by the end of the observation period in 1996. Many populations died out and were reestablished, often repeatedly, during the observation period. Altogether there were 54 population disappearances and 34 reappearances. Many populations changed size as much as 100-fold or more from year to year. There were spectacular examples of populations expanding to fill newly available, large habitats. Frequent extinctions were due overwhelmingly to the canyon drying trend, which led to the drying up of most Mill D North drainage springs, creeks, and ponds. Precipitation and minimum temperatures increased moderately during the observation period. The growing season lengthened almost 50%, a typical consequence of global warming. The drying trend, lengthened growing season, and disappearance of Mimulus populations in Big Cottonwood Canyon appear to be a clear, local example of global warming.

  8. Locally-Adaptive, Spatially-Explicit Projection of U.S. Population for 2030 and 2050

    SciTech Connect (OSTI)

    McKee, Jacob J [ORNL; Rose, Amy N [ORNL; Bright, Eddie A [ORNL; Huynh, Timmy N [ORNL; Bhaduri, Budhendra L [ORNL

    2015-01-01

    Localized adverse events, including natural hazards, epidemiological events, and human conflict, underscore the criticality of quantifying and mapping current population. Moreover, knowing the spatial distribution of future population allows for increased preparation in the event of an emergency. Building on the spatial interpolation technique previously developed for high resolution population distribution data (LandScan Global and LandScan USA), we have constructed an empirically-informed spatial distribution of the projected population of the contiguous U.S. for 2030 and 2050. Whereas most current large-scale, spatially explicit population projections typically rely on a population gravity model to determine areas of future growth, our projection model departs from these by accounting for multiple components that affect population distribution. Modelled variables, which included land cover, slope, distances to larger cities, and a moving average of current population, were locally adaptive and geographically varying. The resulting weighted surface was used to determine which areas had the greatest likelihood for future population change. Population projections of county level numbers were developed using a modified version of the U.S. Census s projection methodology with the U.S. Census s official projection as the benchmark. Applications of our model include, but are not limited to, suitability modelling, service area planning for governmental agencies, consequence assessment, mitigation planning and implementation, and assessment of spatially vulnerable populations.

  9. Data Driven Approach for High Resolution Population Distribution and Dynamics Models

    SciTech Connect (OSTI)

    Bhaduri, Budhendra L; Bright, Eddie A; Rose, Amy N; Liu, Cheng; Urban, Marie L; Stewart, Robert N

    2014-01-01

    High resolution population distribution data are vital for successfully addressing critical issues ranging from energy and socio-environmental research to public health to human security. Commonly available population data from Census is constrained both in space and time and does not capture population dynamics as functions of space and time. This imposes a significant limitation on the fidelity of event-based simulation models with sensitive space-time resolution. This paper describes ongoing development of high-resolution population distribution and dynamics models, at Oak Ridge National Laboratory, through spatial data integration and modeling with behavioral or activity-based mobility datasets for representing temporal dynamics of population. The model is resolved at 1 km resolution globally and describes the U.S. population for nighttime and daytime at 90m. Integration of such population data provides the opportunity to develop simulations and applications in critical infrastructure management from local to global scales.

  10. Population exposure dose reconstruction for the Urals Region

    SciTech Connect (OSTI)

    Degteva, M.O.; Kozheurov, V.P.; Vorobiova, M.I.; Burmistrov, D.S.; Khokhryakov, V.V.; Suslova, K.G.; Anspaugh, L.R.; Napier, B.A.; Bouville, A.

    1996-06-01

    This presentation describes the first preliminary results of an ongoing joint Russian-US pilot feasibility study. Many people participated in workshops to determine what Russian and United States scientists could do together in the area of dose reconstruction in the Urals population. Most of the results presented here came from a joint work shop in St. Petersburg, Russia (11-13 July 1995). The Russians at the workshop represented the Urals Research Center for Radiation Medicine (URCRM), the Mayak Industrial Association, and Branch One of the Moscow Biophysics Institute. The US Collaborators were Dr. Anspaugh of LLNL, Dr. Nippier of PNL, and Dr. Bouville of the National Cancer Institute. The objective of the first year of collaboration was to look at the source term and levels of radiation contamination, the historical data available, and the results of previous work carried out by Russian scientists, and to determine a conceptual model for dose reconstruction.

  11. Pair Instability Supernovae of Very Massive Population III Stars

    E-Print Network [OSTI]

    Chen, Ke-Jung; Woosley, Stan; Almgren, Ann; Whalen, Daniel

    2014-01-01

    Numerical studies of primordial star formation suggest that the first stars in the universe may have been very massive. Stellar models indicate that non-rotating Population III stars with initial masses of 140-260 Msun die as highly energetic pair-instability supernovae. We present new two-dimensional simulations of primordial pair-instability supernovae done with the CASTRO code. Our simulations begin at earlier times than previous multidimensional models, at the onset of core collapse, to capture any dynamical instabilities that may be seeded by collapse and explosive burning. Such instabilities could enhance explosive yields by mixing hot ash with fuel, thereby accelerating nuclear burning, and affect the spectra of the supernova by dredging up heavy elements from greater depths in the star at early times. Our grid of models includes both blue supergiants and red supergiants over the range in progenitor mass expected for these events. We find that fluid instabilities driven by oxygen and helium burning ari...

  12. The Formation of the Wide Asynchronous Binary Asteroid Population

    E-Print Network [OSTI]

    Jacobson, Seth A; McMahon, Jay

    2013-01-01

    We propose and analyze a new mechanism for the formation of the wide asynchronous binary population. These binary asteroids have wide semi-major axes relative to most near-Earth and Main Belt asteroid systems. Confirmed members have rapidly rotating primaries and satellites that are not tidally locked. Previously suggested formation mechanisms from impact ejecta, planetary flybys and directly from rotational fission events cannot satisfy all of the observations. The newly hypothesized mechanism works as follows: (i) these systems are formed from rotational fission, (ii) their satellites are tidally locked, (iii) their orbits are expanded by the BYORP effect, (iv) their satellites de-synchronize due to the adiabatic invariance between the libration of the secondary and the mutual orbit, and (v) the secondary avoids resynchronization due to the the YORP effect. This seemingly complex chain of events is a natural pathway for binaries with satellites that have particular shapes, which define the BYORP effect torq...

  13. Social barriers to pathogen transmission in wild animal populations

    SciTech Connect (OSTI)

    Loehle, C.

    1995-03-01

    Diseases and pathogens are receiving increasing recognition as sources of mortality in animal populations. Immune system strength is clearly important in fending off pathogen attack. Physical barriers to pathogen entry are also important. Various individual behaviors are efficacious in reducing contact with diseases and pests. This paper focuses on a fourth mode of defense: social barriers to transmission. Various social behaviors have pathogen transmission consequences. Selective pressures on these social behaviors may therefore exist. Effects on pathogen transmission of mating strategies, social avoidance, group size, group isolation, and other behaviors are explored. It is concluded that many of these behaviors may have been affected by selection pressures to reduce transmission of pathogens. 84 refs., 1 tab.

  14. Population of 13Be in a Nucleon Exchange Reaction

    E-Print Network [OSTI]

    B. R. Marks; P. A. DeYoung; J. K. Smith; T. Baumann; J. Brown; N. Frank; J. Hinnefeld; M. Hoffman; M. D. Jones; Z. Kohley; A. N. Kuchera; B. Luther; A. Spyrou; S. Stephenson; C. Sullivan; M. Thoennessen; N. Viscariello; S. J. Williams

    2015-12-02

    The neutron-unbound nucleus 13Be was populated with a nucleon-exchange reaction from a 71 MeV/u secondary 13B beam. The decay energy spectrum was reconstructed using invariant mass spectroscopy based on 12Be fragments in coincidence with neutrons. The data could be described with an s-wave resonance at E = 0.73(9) MeV with a width of Gamma = 1.98(34) MeV and a d-wave resonance at E = 2.56(13) MeV with a width of Gamma = 2.29(73) MeV. The observed spectral shape is consistent with previous one-proton removal reaction measurements from 14B.

  15. The Aquila prestellar core population revealed by Herschel

    E-Print Network [OSTI]

    Könyves, V; Men'shchikov, A; Schneider, N; Arzoumanian, D; Bontemps, S; Attard, M; Motte, F; Didelon, P; Maury, A; Abergel, A; Ali, B; Baluteau, J -P; Bernard, J -Ph; Cambrésy, L; Cox, P; Di Francesco, J; di Giorgio, A M; Griffin, M J; Hargrave, P; Huang, M; Kirk, J; Li, J Z; Martin, P; Minier, V; Molinari, S; Olofsson, G; Pezzuto, S; Russeil, D; Roussel, H; Saraceno, P; Sauvage, M; Sibthorpe, B; Spinoglio, L; Testi, L; Ward-Thompson, D; White, G; Wilson, C D; Woodcraft, A; Zavagno, A

    2010-01-01

    The origin and possible universality of the stellar initial mass function (IMF) is a major issue in astrophysics. One of the main objectives of the Herschel Gould Belt Survey is to clarify the link between the prestellar core mass function (CMF) and the IMF. We present and discuss the core mass function derived from Herschel data for the large population of prestellar cores discovered with SPIRE and PACS in the Aquila Rift cloud complex at d ~ 260 pc. We detect a total of 541 starless cores in the entire ~11 deg^2 area of the field imaged at 70-500 micron with SPIRE/PACS. Most of these cores appear to be gravitationally bound, and thus prestellar in nature. Our Herschel results confirm that the shape of the prestellar CMF resembles the stellar IMF, with much higher quality statistics than earlier submillimeter continuum ground-based surveys.

  16. Population doses from environmental gamma radiation in Iraq

    SciTech Connect (OSTI)

    Marouf, B.A.; Mohamad, A.S.; Taha, J.S.; al-Haddad, I.K. (Iraq Atomic Energy Commission, Nuclear Research Center, Tuwaitha, Baghdad, (Iraq))

    1992-05-01

    The exposure rates due to external gamma radiation were measured in 11 Iraqi governerates. Measurements were performed with an Environmental Monitoring System (RSS-111) in open air 1 m above the ground. The average absorbed dose rate in each governerate was as follows (number x 10(-2) microGy h-1): Babylon (6.0), Kerbala (5.3), Al-Najaf (5.4), Al-Kadysia (6.5), Wasit (6.5), Diala (6.5), Al-Anbar (6.5), Al-Muthana (6.6), Maisan (6.8), Thee-Kar (6.6), and Al-Basrah (6.5). The collective doses to the population living in these governerates were 499, 187, 239, 269, 262, 458, 384, 153, 250, 450, and 419 person-Sv, respectively.

  17. The RR Lyrae variable population in the Phoenix dwarf galaxy

    SciTech Connect (OSTI)

    Ordoñez, Antonio J.; Sarajedini, Ata [Department of Astronomy, University of Florida, 211 Bryant Space Science Center, Gainesville, FL 32611 (United States); Yang, Soung-Chul, E-mail: a.ordonez@ufl.edu, E-mail: ata@astro.ufl.edu, E-mail: sczoo@kasi.re.kr [Korea Astronomy and Space Science Institute (KASI), Daejeon 305-348 (Korea, Republic of)

    2014-05-10

    We present the first detailed study of the RR Lyrae variable population in the Local Group dSph/dIrr transition galaxy, Phoenix, using previously obtained HST/WFPC2 observations of the galaxy. We utilize template light curve fitting routines to obtain best fit light curves for RR Lyrae variables in Phoenix. Our technique has identified 78 highly probable RR Lyrae stars (54 ab-type; 24 c-type) with about 40 additional candidates. We find mean periods for the two populations of (P {sub ab}) = 0.60 ± 0.03 days and (P{sub c} ) = 0.353 ± 0.002 days. We use the properties of these light curves to extract, among other things, a metallicity distribution function for ab-type RR Lyrae. Our analysis yields a mean metallicity of ([Fe/H]) = –1.68 ± 0.06 dex for the RRab stars. From the mean period and metallicity calculated from the ab-type RR Lyrae, we conclude that Phoenix is more likely of intermediate Oosterhoff type; however the morphology of the Bailey diagram for Phoenix RR Lyraes appears similar to that of an Oosterhoff type I system. Using the RRab stars, we also study the chemical enrichment law for Phoenix. We find that our metallicity distribution is reasonably well fitted by a closed-box model. The parameters of this model are compatible with the findings of Hidalgo et al., further supporting the idea that Phoenix appears to have been chemically enriched as a closed-box-like system during the early stage of its formation and evolution.

  18. Climate and food supply influences on mobile epibenthic megafauna populations in the abyssal NE Pacific from 1989 to 2004

    E-Print Network [OSTI]

    Ruhl, Henry A.

    2006-01-01

    effects: population growth, critical density, and the chance of extinction. Natural Resourceeffects: population growth, critical density, and the chance of extinction. Natural Resource

  19. Nuisance Source Population Modeling for Radiation Detection System Analysis

    SciTech Connect (OSTI)

    Sokkappa, P; Lange, D; Nelson, K; Wheeler, R

    2009-10-05

    A major challenge facing the prospective deployment of radiation detection systems for homeland security applications is the discrimination of radiological or nuclear 'threat sources' from radioactive, but benign, 'nuisance sources'. Common examples of such nuisance sources include naturally occurring radioactive material (NORM), medical patients who have received radioactive drugs for either diagnostics or treatment, and industrial sources. A sensitive detector that cannot distinguish between 'threat' and 'benign' classes will generate false positives which, if sufficiently frequent, will preclude it from being operationally deployed. In this report, we describe a first-principles physics-based modeling approach that is used to approximate the physical properties and corresponding gamma ray spectral signatures of real nuisance sources. Specific models are proposed for the three nuisance source classes - NORM, medical and industrial. The models can be validated against measured data - that is, energy spectra generated with the model can be compared to actual nuisance source data. We show by example how this is done for NORM and medical sources, using data sets obtained from spectroscopic detector deployments for cargo container screening and urban area traffic screening, respectively. In addition to capturing the range of radioactive signatures of individual nuisance sources, a nuisance source population model must generate sources with a frequency of occurrence consistent with that found in actual movement of goods and people. Measured radiation detection data can indicate these frequencies, but, at present, such data are available only for a very limited set of locations and time periods. In this report, we make more general estimates of frequencies for NORM and medical sources using a range of data sources such as shipping manifests and medical treatment statistics. We also identify potential data sources for industrial source frequencies, but leave the task of estimating these frequencies for future work. Modeling of nuisance source populations is only useful if it helps in understanding detector system performance in real operational environments. Examples of previous studies in which nuisance source models played a key role are briefly discussed. These include screening of in-bound urban traffic and monitoring of shipping containers in transit to U.S. ports.

  20. Dworshak Reservoir Kokanee Population Monitoring, Annual Report 2001.

    SciTech Connect (OSTI)

    Maiolie, Melo; Stark, Eric

    2003-03-01

    Onsite testing of strobe lights was conducted to determine if they repelled kokanee Oncorhynchus nerka away from the turbine intakes at Dworshak Dam. We tested a set of nine strobe lights flashing at a rate of 360 flashes/min placed near the intake of a 90 mW turbine. A split-beam echo sounder was used to determine the effect of strobe light operation on fish density (thought to be mostly kokanee) in front of the turbine intakes. On five nights between December 2001 and January 2002, fish density averaged 110 fish/ha when no lights were flashing. Mean density dropped to 13 fish/ha when the strobe lights were turned on during five additional nights of sampling. This 88% decline in density was significant at the P = 0.009 level of significance based on a paired Student's t test. There appeared to be no tendency for fish to habituate to the lights during the night. Test results indicate that a single set of nine lights may be sufficient to repel kokanee from a turbine intake during the night. We also used split-beam hydroacoustics to monitor the kokanee population in Dworshak Reservoir during 2001. Estimated abundance of kokanee has continued to increase since the spring of 1996 when high entrainment losses occurred. Based on hydroacoustic surveys, we estimated 3,276,000 kokanee in Dworshak Reservoir in early July 2001. This included 2,069,000 age-0 kokanee (90% CI {+-} 16.4%), 801,000 age-1 kokanee (90% CI {+-} 17.8%), and 406,000 age-2 kokanee (90% CI {+-} 20.5%). Entrainment sampling was also conducted with split-beam hydroacoustics a minimum of one continuous 24 h period per month. The highest entrainment rates occurred at night with lower discharges and shallower intake depths. Fish movement patterns suggested that they swam 'at will' in front of the intakes and may have chosen to move into the turbine intakes. Based on monthly hydroacoustic sampling in the forebay, we found that kokanee density was low in July and August during a period of high discharge. However, kokanee density was high in late winter when discharge was also high, thus increasing the likelihood of entrainment. Counts of spawning kokanee in four tributary streams used as an index reached 6,079 fish. This spawner count appeared unusually low considering the high population estimate of kokanee in the reservoir and data collected in previous years.

  1. Global Carbon Emissions in the Coming Decades: The Case of China

    E-Print Network [OSTI]

    Levine, Mark D.

    2008-01-01

    2006 GDP CO2 Population Source: LBNL, emissions are derivedCarbon Emissions Reductions, 2000-2020 Mt CO2 Source:CO 2 Emissions, 1950-2006 Mt CO2 USA PRC Source: Historical

  2. The development of the contested city form of Shenzhen, China

    E-Print Network [OSTI]

    Tian, Hao, 1978-

    2005-01-01

    The population of Shenzhen Special Economic Zone has exploded, within twenty-three years, from thirty thousand to 4.7 million with average 28 percent annual per capita GDP increase. What city forms have been sustaining ...

  3. Chemical constraints on the contribution of population III stars to cosmic reionization

    SciTech Connect (OSTI)

    Kulkarni, Girish; Hennawi, Joseph F. [Max Planck Institute for Astronomy, Königstuhl 17, D-69117 Heidelberg (Germany); Rollinde, Emmanuel; Vangioni, Elisabeth, E-mail: girish@mpia-hd.mpg.de [Institut d'Astrophysique de Paris, UMR 7095, UPMC, Paris VI, 98 bis boulevard Arago, F-75014 Paris (France)

    2014-05-20

    Recent studies have highlighted that galaxies at z = 6-8 fall short of producing enough ionizing photons to reionize the intergalactic medium, and suggest that Population III stars could resolve this tension, because their harder spectra can produce ?10 × more ionizing photons than Population II. We use a semi-analytic model of galaxy formation, which tracks galactic chemical evolution, to gauge the impact of Population III stars on reionization. Population III supernovae produce distinct metal abundances, and we argue that the duration of the Population III era can be constrained by precise relative abundance measurements in high-z damped Ly? absorbers (DLAs), which provide a chemical record of past star formation. We find that a single generation of Population III stars can self-enrich galaxies above the critical metallicity Z {sub crit} = 10{sup –4} Z {sub ?} for the Population III-to-II transition, on a very short timescale t {sub self-enrich} ? 10{sup 6} yr, owing to the large metal yields and short lifetimes of Population III stars. This subsequently terminates the Population III era, so they contribute ? 50% of the ionizing photons only for z ? 30, and at z = 10 contribute <1%. The Population III contribution can be increased by delaying metal mixing into the interstellar medium. However, comparing the resulting metal abundance pattern to existing measurements in z ? 6 DLAs, we show that the observed [O/Si] ratios of absorbers rule out Population III stars being a major contributor to reionization. Future abundance measurements of z ? 7-8 QSOs and gamma-ray bursts should probe the era when the chemical vestiges of Population III star formation become detectable.

  4. LandScan 2014 High-Resolution Global Population Data Set

    SciTech Connect (OSTI)

    2015-01-01

    The LandScan data set is a worldwide population database compiled on a 30" X 30" latitude/longitude grid. Census counts (at sub-national level) were apportioned to each grid cell based on likelihood coefficients, which are based on land cover, slope, road proximity, high-resolution imagery, and other data sets. The LandScan data set was developed as part of Oak Ridge National Laboratory (ORNL) Global Population Project for estimating ambient populations at risk.

  5. Globular Cluster Mass Loss in the Context of Multiple Populations

    E-Print Network [OSTI]

    Bastian, Nate

    2015-01-01

    Many scenarios for the origin of the chemical anomalies observed in globular clusters (GCs; i.e., multiple populations) require that GCs were much more massive at birth, up to $10-100\\times$, than they are presently. This is invoked in order to have enough material processed through first generation stars in order to form the observed numbers of enriched stars (inferred to be second generation stars in these models). If such mass loss was due to tidal stripping, gas expulsion, or tidal interaction with the birth environment, there should be clear correlations between the fraction of enriched stars and other cluster properties, whereas the observations show a remarkably uniform enriched fraction of $0.68\\pm0.07$ (from 33 observed GCs). If interpreted in the heavy mass loss paradigm, this means that all GCs lost the same fraction of their initial mass (between $95-98$\\%), regardless of their mass, metallicity, location at birth or subsequent migration, or epoch of formation. This is incompatible with prediction...

  6. Pair instability supernovae of very massive population III stars

    SciTech Connect (OSTI)

    Chen, Ke-Jung; Woosley, Stan [Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064 (United States); Heger, Alexander [Monash Centre for Astrophysics, Monash University, Victoria 3800 (Australia); Almgren, Ann [Center for Computational Sciences and Engineering, Lawrence Berkeley National Lab, Berkeley, CA 94720 (United States); Whalen, Daniel J., E-mail: kchen@ucolick.org [T-2, Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)

    2014-09-01

    Numerical studies of primordial star formation suggest that the first stars in the universe may have been very massive. Stellar models indicate that non-rotating Population III stars with initial masses of 140-260 M {sub ?} die as highly energetic pair-instability supernovae. We present new two-dimensional simulations of primordial pair-instability supernovae done with the CASTRO code. Our simulations begin at earlier times than previous multidimensional models, at the onset of core contraction, to capture any dynamical instabilities that may be seeded by core contraction and explosive burning. Such instabilities could enhance explosive yields by mixing hot ash with fuel, thereby accelerating nuclear burning, and affect the spectra of the supernova by dredging up heavy elements from greater depths in the star at early times. Our grid of models includes both blue supergiants and red supergiants over the range in progenitor mass expected for these events. We find that fluid instabilities driven by oxygen and helium burning arise at the upper and lower boundaries of the oxygen shell ?20-100 s after core bounce. Instabilities driven by burning freeze out after the SN shock exits the helium core. As the shock later propagates through the hydrogen envelope, a strong reverse shock forms that drives the growth of Rayleigh-Taylor instabilities. In red supergiant progenitors, the amplitudes of these instabilities are sufficient to mix the supernova ejecta.

  7. How are mortality rates affected by population density?

    E-Print Network [OSTI]

    Wang, Lei; Di, Zengru; Roehner, Bertrand M

    2013-01-01

    Biologists have found that the death rate of cells in culture depends upon their spatial density. Permanent "Stay alive" signals from their neighbours seem to prevent them from dying. In a previous paper (Wang et al. 2013) we gave evidence for a density effect for ants. In this paper we examine whether there is a similar effect in human demography. We find that although there is no observable relationship between population density and overall death rates, there is a clear relationship between density and the death rates of young age-groups. Basically their death rates decrease with increasing density. However, this relationship breaks down around 300 inhabitants per square kilometre. Above this threshold the death rates remains fairly constant. The same density effect is observed in Canada, France, Japan and the United States. We also observe a striking parallel between the density effect and the so-called marital status effect in the sense that they both lead to higher suicide rates and are both enhanced fo...

  8. Formation of the wide asynchronous binary asteroid population

    SciTech Connect (OSTI)

    Jacobson, Seth A. [Department of Astrophysical and Planetary Science, UCB 391, University of Colorado, Boulder, CO 80309 (United States); Scheeres, Daniel J.; McMahon, Jay [Department of Aerospace Engineering Sciences, UCB 429, University of Colorado, Boulder, CO 80309 (United States)

    2014-01-01

    We propose and analyze a new mechanism for the formation of the wide asynchronous binary population. These binary asteroids have wide semimajor axes relative to most near-Earth and main belt asteroid systems. Confirmed members have rapidly rotating primaries and satellites that are not tidally locked. Previously suggested formation mechanisms from impact ejecta, from planetary flybys, and directly from rotational fission events cannot satisfy all of the observations. The newly hypothesized mechanism works as follows: (1) these systems are formed from rotational fission, (2) their satellites are tidally locked, (3) their orbits are expanded by the binary Yarkovsky-O'Keefe-Radzievskii-Paddack (BYORP) effect, (4) their satellites desynchronize as a result of the adiabatic invariance between the libration of the secondary and the mutual orbit, and (5) the secondary avoids resynchronization because of the YORP effect. This seemingly complex chain of events is a natural pathway for binaries with satellites that have particular shapes, which define the BYORP effect torque that acts on the system. After detailing the theory, we analyze each of the wide asynchronous binary members and candidates to assess their most likely formation mechanism. Finally, we suggest possible future observations to check and constrain our hypothesis.

  9. Assessment of plutonium exposure in the Enewetak population by urinalysis

    SciTech Connect (OSTI)

    Sun, L.C.; Meinhold, C.B.; Moorthy, A.R.

    1997-07-01

    Since 1980, the inhabitants of Enewetak Atoll have been monitored periodically by scientists from Brookhaven National Laboratory for internally deposited radioactive material. In 1989, the establishment of fission track analysis and of a protocol for shipboard collection of 24-h urine samples significantly improved our ability to assess the internal uptake of plutonium. The purpose of this report is to show the distribution of plutonium concentrations in urine collected in 1989 and 1991, and to assess the associated committed effective doses for the Enewetak population based on a long-term chronic uptake of low-level plutonium. To estimate dose, we derived the plutonium dose-per-unit-uptake coefficients based on the dosimetric system of the International Commission on Radiological Protection. Assuming a continuous uptake, an integrated Jones`s plutonium urine excretion function was developed to interpret the Enewetak urine data. The Appendix shows how these values were derived. The committed effective doses were 0.2 mSv, calculated from the 1991 average plutonium content in 69 urine samples. 29 refs., 3 tabs.

  10. Population structure of the vernal pool fairy shrimp (Branchinecta lynchi) at two spatial scales

    E-Print Network [OSTI]

    McClintock, Kelly Marie

    2012-01-01

    and longitude for each sampled pool, number of segregatingPi). Population Latitude Longitude Pool Size n # Hap. Pool10and trends in ephemeral pool invertebrate conservation:

  11. Risk analysis for species introductions: forecasting population growth of Eurasian ruffe

    E-Print Network [OSTI]

    Risk analysis for species introductions: forecasting population growth of Eurasian ruffe productivity (Leung et al. 2002). Risk-analysis methodology for intentional and unintentional introductions

  12. Risk Analysis for Water Resources Under Climate Change, Population Growth, and Land Use Change

    E-Print Network [OSTI]

    Kiparsky, Michael

    2010-01-01

    Vulnerability from climate change acid population growth."2004). "Emissions pathways, climate change, and impacts onthe Intergovernmental Panel on Climate Change (IPCC). J. J.

  13. THE ECONOMIC THRESHOLD WITH A STOCHASTIC PEST POPULATION: A REAL OPTIONS APPROACH

    E-Print Network [OSTI]

    Saphores, Jean-Daniel M

    2007-01-01

    101. Trigeorgis, L. , Real Options: Managerial FlexibilityPEST POPULATION: A REAL OPTIONS APPROACH ? Jean-Daniel M.Keywords: Uncertainty; Real Options; Pest Control; Reentry

  14. Adverse Outcome Pathways and Ecological Risk Assessment: Bridging to Population-Level Effects

    SciTech Connect (OSTI)

    Kramer, Vincent J.; Etterson, Matthew A.; Hecker, Markus; Murphy, Cheryl A.; Roesijadi, Guritno; Spade, Daniel J.; Spromberg, Julann A.; Wang, Magnus; Ankley, Gerald T.

    2010-11-24

    The viability of populations of plants and animals is a key focus for environmental regulation. Population-level responses integrate the cumulative effects of chemical stressors on individuals as those individuals interact with and are affected by their con-specifics, competitors, predators, prey, habitat and other biotic and abiotic factors. Models of population-level effects of contaminants can integrate information from lower levels of biological organization and feed that information into higher-level community and ecosystem models. As individual-level endpoints are utilized to predict population responses, this requires that biological responses at lower levels of organization be translated into a form that is useable by the population modeler. In this paper we describe how mechanistic data, as captured in adverse outcome pathways, can be translated into modeling focused on population-level risk assessments. First, we present a succinct overview of different approaches to population modeling, and discuss the types of data needed for these models. Then we discuss how toxicity data are used currently for population modeling, and provide recommendations as to how testing might be modified to better generate information to support modeling. From this we describe how different key processes measured at the level of the individual serve as the bridge between mechanistic toxicology data and predictions of population status, and provide case examples of how this linkage has been/can be achieved.

  15. Molecular genetic analysis of a cattle population to reconstitute the extinct Algarvia breed

    E-Print Network [OSTI]

    2010-01-01

    genetic analysis of a cattle popula- tion to reconstituterelationships between ten native cattle breeds from Galiciaand Northern European cattle populations. Proc Biol Sci

  16. Psoriasis patients with a history of malignancy represent an important but overlooked study population

    E-Print Network [OSTI]

    Persad, Paul; Levender, Michelle M; Feldman, Steven R

    2011-01-01

    Commentary: Psoriasis patients with a history of malignancytreatment of moderate to severe psoriasis often requires thethis patient population. Psoriasis is rarely perceived as a

  17. Dynamic energy budgets and bioaccumulation : a model for marine mammals and marine mammal populations

    E-Print Network [OSTI]

    Klanjš?ek, Tin

    2006-01-01

    Energy intake of individuals affects growth of organisms and, therefore, populations. Persistent lipophilic toxicants acquired with the energy can bioaccumulate and harm individuals. Marine mammals are particularly vulnerable ...

  18. Empower Women, Save the Planet? Science, Strategy, and Population-Environment Advocacy

    E-Print Network [OSTI]

    Sasser, Jade

    2012-01-01

    donors and their ENGO grantees identify as a hopefuldonor partnership and grantee selection. Population andrelations of donors to their grantees, shape these linkages

  19. Hanford Area 1990 population and 50-year projections. [Appendix contains computer programming for population projections and graphs showing them by grid areas

    SciTech Connect (OSTI)

    Beck, D.M.; Scott, M.J.; Shindle, S.F.; Napier, B.A.; Thurman, A.G.; Batishko, N.C. (Pacific Northwest Lab., Richland, WA (United States)); Davis, M.D. (Westinghouse Hanford Co., Richland, WA (United States)); Pittenger, D.B. (Demographics Lab., Olympia, WA (United States))

    1991-10-01

    The complex and comprehensive safety analysis activities carried out at Hanford for nonreactor nuclear facilities require data from a number of scientific and engineering disciplines. The types of data that are required include data pertaining to current population and population projections. The types of data found in this document include 1990 census totals for residential population within a 50-mile radius of the 100-N, 200, 300, and 400 Area meteorological towers. This document also contains 50-year projections for residential populations within a 50-mile radius of these four meteorological towers. The analysis of population projections indicates that residential population within a 50-mile radius of the four meteorological towers in question will continue to grow through 2040, although at a slower rate each decade. In all cases, the highest growth is projected for the decade ending in the year 2000. The annual growth rate for this period is projected to be 0.646, 0.633, 0.543, and 0.570 in the 100-N, 200, 300, and 400 Areas, respectively. By 2040, these growth rates are projected to drop to 0.082, 0.068, 0.078, 0.078, respectively. 4 refs., 1 figs., 4 tabs.

  20. Population Monte Carlo algorithms Yukito Iba The Institute of Statistical Mathematics

    E-Print Network [OSTI]

    Iba, Yukito

    279 ¤ Population Monte Carlo algorithms Yukito Iba The Institute of Statistical Mathematics iba algorithm Summary We give a cross-disciplinary survey on "population" Monte Carlo algorithms. In these algorithms, a set of "walkers" or "particles" is used as a representation of a high-dimensional vector

  1. Estimating mutation parameters, population history and genealogy simultaneously from temporally spaced

    E-Print Network [OSTI]

    Nicholls, Geoff

    Estimating mutation parameters, population history and genealogy simultaneously from temporally and population size that incorporates the uncertainty in the genealogy of such temporally spaced sequences features of this approach on a genealogy of HIV-1 envelope (env) partial sequences. #12;1 Introduction One

  2. Population Structure and Gene Flow of the Yellow Anaconda (Eunectes notaeus) in Northern Argentina

    E-Print Network [OSTI]

    Shaffer, H. Bradley

    Population Structure and Gene Flow of the Yellow Anaconda (Eunectes notaeus) in Northern Argentina´n Biodiversidad ­ Argentina, Buenos Aires, Argentina, 4 Wildlife Conservation Society, Bronx, New York, United plan in Argentina, so information regarding population structuring can be helpful for determination

  3. HumanWildlife Interactions 5(2):269275, Fall 2011 Rodent population management at Kansas

    E-Print Network [OSTI]

    Porte Avenue, Fort Collins, CO 80521-2154, USA gary.w.witmer@aphis.usda.gov Abstract: Birds pose serious, therefore, reduce risk that raptors pose to air- craft. Rodent populations can be reduced by population.]) pose a direct collision hazard to aircraft. It should be noted, however, that larger mammals

  4. Sensitivity of population smoke exposure to fire locations in Equatorial Asia1 Patrick S. Kim1,*

    E-Print Network [OSTI]

    Mickley, Loretta J.

    , Fire, Conservation, Population-Exposure52 53 1. Introduction54 55 Global palm oil and Malaysia together account for 86% of the57 world's production and Indonesia plans to double its output for conversion to32 oil palm plantations, can lead to high smoke concentrations across this densely populated

  5. Planning for an Aging Population Sharon Cowen and Molly Donovan, University of New Hampshire Cooperative Extension

    E-Print Network [OSTI]

    New Hampshire, University of

    Planning for an Aging Population Sharon Cowen and Molly Donovan, University of New Hampshire Cooperative Extension Why are we talking about aging? As in most of America, New Hampshire's population is aging quickly. Senior Housing Perspectives, a report prepared by the New Hampshire Center for Public

  6. Logistic Growth The logistic equation is a model of limited population growth. The exponential growth model

    E-Print Network [OSTI]

    Ikenaga, Bruce

    9­28­1998 Logistic Growth The logistic equation is a model of limited population growth of organisms runs out of food, encounters predators, or fouls its own environment with waste. The logistic the carrying capacity. Example. A population of roaches grows logistically in Calvin Butterball's kitchen

  7. The Impact of Experimental Setup on Prepaid Churn Modeling: Data, Population and Outcome Definition

    E-Print Network [OSTI]

    Putten, Peter van der

    The Impact of Experimental Setup on Prepaid Churn Modeling: Data, Population and Outcome Definition.larsen@t-mobile.nl Abstract. Prepaid customers in mobile telecommunications are not bound by a contract and can therefore study of prepaid churn modeling by varying on three dimensions: data, outcome definition and population

  8. Global warming and positive fitness response in mountain populations of common lizards

    E-Print Network [OSTI]

    Danchin, Etienne

    Global warming and positive fitness response in mountain populations of common lizards Lacerta, Madrid, Spain Abstract Recent global warming threatens many species and has already caused population and individual-based approaches. Keywords: body size, fitness, global warming, life-history trade-offs, lizards

  9. A POSSIBLE LOCAL COUNTERPART TO THE EXCESS POPULATION OF FAINT BLUE GALAXIES

    E-Print Network [OSTI]

    McGaugh, Stacy

    A POSSIBLE LOCAL COUNTERPART TO THE EXCESS POPULATION OF FAINT BLUE GALAXIES STACY S. MCGAUGH of galaxies to very faint magnitudes have revealed a popu- lation of blue galaxies at intermediate redshift1 5 brightness galaxies have properties very similar to those of the excess blue population10;11, and re- cent

  10. Coherent population trapping resonance structure in paraffin-coated Rb vacuum cells

    E-Print Network [OSTI]

    Coherent population trapping resonance structure in paraffin-coated Rb vacuum cells S. Gateva*, E of the CPT resonances are investigated in two different paraffin-coated Rb vapor cells from point of view: coherent population trapping, line shapes and line widths, coated cell, magnetometry 1. INTRODUCTION During

  11. Population genetic structure of Oncorhynchus mykiss in the Santa Ynez River, California John Carlos Garza

    E-Print Network [OSTI]

    microsatellite marker loci were analyzed at multiple scales to investigate ancestry, migration and population significant differentiation between all four of these primary population samples in all analyses. However, migration was evident between Salsipuedes and Hilton Creeks, as well as from Santa Cruz Creek to both

  12. POPULATION, MULTI-SCALE PROCESSES, AND LAND USE TRANSITIONSIN WilliamKY Pan

    E-Print Network [OSTI]

    Lopez-Carr, David

    POPULATION, MULTI-SCALE PROCESSES, AND LAND USE TRANSITIONSIN THE AMAZON WilliamKY Pan DavidL. Carr focusedon anddebatedthe drivers of LUCC, such as the influence of population dynamics (Carr et al 2006; Allen andBarnes 1985; Barbieri andCarr 2005; Mather andNeedle 2000; Pan et al. 2007; Armenterasaet al

  13. GENETIC POPULATION STRUCTURE, GENE FLOW, AND EVOLUTIONARY HISTORY OF SELECTED ORNAMENTAL FISH

    E-Print Network [OSTI]

    GENETIC POPULATION STRUCTURE, GENE FLOW, AND EVOLUTIONARY HISTORY OF SELECTED ORNAMENTAL FISH dispersal distances in the Red Sea 12 Chapter 3 Comparative genetic population structure of two reef fishes and the demographic connectivity in the endemic fish species of the Red Sea Larabicus quadrilineatus, and in the two

  14. SCHROEDER AND LOVE.: RECREATIONAL FISHING AND MARINE FISH POPULATIONS CalCOFI Rep., Vol. 43, 2002

    E-Print Network [OSTI]

    Love, Milton

    SCHROEDER AND LOVE.: RECREATIONAL FISHING AND MARINE FISH POPULATIONS CalCOFI Rep., Vol. 43, 2002 RECREATIONAL FISHING AND MARINE FISH POPULATIONS IN CALIFORNIA DONNA M. SCHROEDER AND MILTON S. LOVE Marine@lifesci.ucsb.edu ABSTRACT We present and review information regarding recre- ational angling and exploited marine fish

  15. The cost of males in non-equilibrium populations Curtis M. Lively

    E-Print Network [OSTI]

    Lively, Curt

    . Mathematical methods: The cost of males per reproductive time step was calculated as the ratio of the per-capita population. This reduction in the per-capita growth rate has been called the `cost of males' (Maynard SmithThe cost of males in non-equilibrium populations Curtis M. Lively Department of Biology, Indiana

  16. Senescence and antibiotic resistance in an age-structured population model

    E-Print Network [OSTI]

    Gedeon, Tomas

    and other interventions that focus on reducing the transmission of antimicrobial-resistant bacteria betweenSenescence and antibiotic resistance in an age-structured population model Patrick De Leenheer Jack the growing problem of antibiotic resistance of microbial populations. Here we investigate a model

  17. Practical Challenges when Implementing a Distributed Population of Cloud-Computing

    E-Print Network [OSTI]

    Practical Challenges when Implementing a Distributed Population of Cloud-Computing Simulators will soon appear. For example, we recently applied a genetic algorithm to steer a population of cloud-computing-- Computational steering, cloud computing, cluster computing, discrete event simulation, distributed systems

  18. Cellulose Biodegradation Models; An Example of Cooperative Interactions in Structured Populations

    E-Print Network [OSTI]

    Miroshnikov, Alexey

    Cellulose Biodegradation Models; An Example of Cooperative Interactions in Structured Populations Pierre-Emmanuel Jabin Alexey Miroshnikov Robin Young Abstract We introduce various models for cellulose the structure of the cellulose chains and are allowed to depend on the phenotypical traits of the population

  19. 213 WILDLIFE BIOLOGY 9:3 (2003) The population dynamics of mountain goats Oreamnos

    E-Print Network [OSTI]

    Festa-Bianchet, Marco

    2003-01-01

    ), but not for native populations (Hebert & Turnbull 1977, Kuck 1977, Smith 1988b). In native populations, mountain & Turnbull 1977, Kuck 1977), and most management agencies use more con- servative harvest goals for native herds. An average harvest of 4% was allowed in Idaho, USA (Kuck 1977). During 1973-1985, some herds in

  20. Perspective: The Climate-Population-Infrastructure Modeling and Simulation Fertile Area for New Research

    SciTech Connect (OSTI)

    Allen, Melissa R; Fernandez, Steven J; Walker, Kimberly A; Fu, Joshua S

    2014-01-01

    Managing the risks posed by climate change and extreme weather to energy production and delivery is a challenge to communities worldwide. As climate conditions change, populations will shift, and demand will re-locate; and networked infrastructures will evolve to accommodate new load centers, and, hopefully, minimize vulnerability to natural disaster. Climate effects such as sea level rise, increased frequency and intensity of natural disasters, force populations to move locations. Displaced population creates new demand for built infrastructure that in turn generates new economic activity that attracts new workers and associated households to the new locations. Infrastructures and their interdependencies will change in reaction to climate drivers as the networks expand into new population areas and as portions of the networks are abandoned as people leave. Thus, infrastructures will evolve to accommodate new load centers while some parts of the network are underused, and these changes will create emerging vulnerabilities. Forecasting the location of these vulnerabilities by combining climate predictions and agent based population movement models shows promise for defining these future population distributions and changes in coastal infrastructure configurations. By combining climate and weather data, engineering algorithms and social theory it has been only recently possible to examine electricity demand response to increased climactic temperatures, population relocation in response to extreme cyclonic events, consequent net population changes and new regional patterns in electricity demand. These emerging results suggest a research agenda of coupling these disparate modelling approaches to understand the implications of climate change for protecting the nation s critical infrastructure.

  1. Implications of a New Solar System Population of Neutralinos on Indirect Detection Rates

    E-Print Network [OSTI]

    Lars Bergstrom; Thibault Damour; Joakim Edsjo; Lawrence M. Krauss; Piero Ullio

    1999-09-08

    Recently, a new Solar System population of weakly interacting massive particle (WIMP) dark matter has been proposed to exist. We investigate the implications of this population on indirect signals in neutrino telescopes (due to WIMP annihilations in the Earth) for the case when the WIMP is the lightest neutralino of the MSSM, the minimal supersymmetric extension of the standard model. The velocity distribution and capture rate of this new population is evaluated and the flux of neutrino-induced muons from the center of the Earth in neutrino telescopes is calculated. The strength of the signal is very sensitive to the velocity distribution of the new population. We analytically estimate this distribution using the approximate conservation of the component of the WIMP angular momentum orthogonal to the ecliptic plane. The non-linear problem of combining a fixed capture rate from the standard galactic WIMP population with one rising linearly with time from the new population to obtain the present-day annihilation rate in the Earth is also solved analytically. We show that the effects of the new population can be crucial for masses below around 150 GeV, where enhancements of the predicted muon flux from the center of the Earth by up to a factor of 100 compared to previously published estimates occur. As a result of the new WIMP population, the next generation of neutrino telescopes should be able to probe a much larger region of parameter space in the mass range 60-130 GeV.

  2. Nonlinear Heart Rate Variability in a Healthy Population: Influence of Age

    E-Print Network [OSTI]

    Nonlinear Heart Rate Variability in a Healthy Population: Influence of Age S Vandeput1 , B Universiteit Leuven, Belgium Abstract Heart rate variability (HRV) measurements are used as markers of autonomic modulation of heart rate. Numerical noise titration was applied to a large healthy population

  3. Multivariate Population Balances via Moment and Monte Carlo Simulation Methods: An Important Sol Reaction Engineering

    E-Print Network [OSTI]

    Multivariate Population Balances via Moment and Monte Carlo Simulation Methods: An Important Sol application of current/future importance, a multivariate description is required, for which the existing, hopefully, motivate a broader attack on important multivariate population balance problems, including those

  4. A multivariate analysis of the niches of plant populations in raised bogs. I. Niche dimensions

    E-Print Network [OSTI]

    Johnson, Edward A.

    A multivariate analysis of the niches of plant populations in raised bogs. I. Niche dimensions E. A Biologictrl Lrrhorrrrory,WoorlsHole, MA, U.S.A. Received July 19, 1976 JOHNSON,E. A. 1977. A multivariate. A multivariate analysis of the niches of plant populations in raised bogs. I. Niche dimensions. Can. J. Bot. 55

  5. SI Appendix: A comparison of worldwide phonemic and genetic variation in human populations

    E-Print Network [OSTI]

    Rosenberg, Noah

    Materials and Methods Figures S1-S15 Tables S1-S9 References #12;2 Table of Contents 1. Preparation.......................................................................4 1.5 Annotating Ruhlen languages with speaker population sizes and geographic coordinates.8 Annotating PHOIBLE languages with speaker population sizes and geographic coordinates

  6. Rule of sample proportions (p. 359) IF: 1. There is a population proportion of interest

    E-Print Network [OSTI]

    Hunter, David

    10/28/09 1 Rule of sample proportions (p. 359) IF: 1. There is a population proportion of interest proportion is computed every time, the resulting histogram will: 1. be roughly bell-shaped 2. have mean equal to the true population proportion 3. have standard deviation equal to: Sample proportions: Suppose the true

  7. Rule of sample proportions IF: 1. There is a population proportion of interest

    E-Print Network [OSTI]

    Hunter, David

    Rule of sample proportions IF: 1. There is a population proportion of interest 2. We have a random possible outcomes THEN: If numerous samples of the same size are taken and the sample proportion population proportion 3. have standard deviation equal to: #12;Sample proportions: Suppose the true

  8. NEW DATA ON THE POPULATION, DISTRIBUTION AND HABITAT PREFERENCES OF THE

    E-Print Network [OSTI]

    Seoane, Javier

    NEW DATA ON THE POPULATION, DISTRIBUTION AND HABITAT PREFERENCES OF THE CANARY ISLANDS STONECHAT, distribution and habitat preferences of the Canary Islands stonechat Saxicola dacotiae. This paper updates estimates of population size, distribution and habitat preferences of the endemic Canary Islands stonechat

  9. The Career and Technical Special Populations Training and Resource Education Center (CTSP Center) is a

    E-Print Network [OSTI]

    The Career and Technical Special Populations Training and Resource Education Center (CTSP Center resource library and provides multimedia online courses and learning modules that address critical issues and Technical Special Populations Training and Resource Education Center http://ctsp.tamu.edu #12;Results Over

  10. Adaptive sex ratio variation in pre-industrial human (Homo sapiens) populations?

    E-Print Network [OSTI]

    Lummaa, Virpi

    Adaptive sex ratio variation in pre-industrial human (Homo sapiens) populations? Virpi Lummaa-20014 Turku, Finland Sex allocation theory predicts that in a population with a biased operational sex ratio (OSR), parents will increase their ¢tness by adjusting the sex ratio of their progeny towards

  11. Estimating Small-area Populations by Age and Sex Using Spatial Interpolation and Statistical Inference Methods

    SciTech Connect (OSTI)

    Qai, Qiang [University of Iowa; Rushton, Gerald [University of Iowa; Bhaduri, Budhendra L [ORNL; Bright, Eddie A [ORNL; Coleman, Phil R [ORNL

    2006-01-01

    The objective of this research is to compute population estimates by age and sex for small areas whose boundaries are different from those for which the population counts were made. In our approach, population surfaces and age-sex proportion surfaces are separately estimated. Age-sex population estimates for small areas and their confidence intervals are then computed using a binomial model with the two surfaces as inputs. The approach was implemented for Iowa using a 90 m resolution population grid (LandScan USA) and U.S. Census 2000 population. Three spatial interpolation methods, the areal weighting (AW) method, the ordinary kriging (OK) method, and a modification of the pycnophylactic method, were used on Census Tract populations to estimate the age-sex proportion surfaces. To verify the model, age-sex population estimates were computed for paired Block Groups that straddled Census Tracts and therefore were spatially misaligned with them. The pycnophylactic method and the OK method were more accurate than the AW method. The approach is general and can be used to estimate subgroup-count types of variables from information in existing administrative areas for custom-defined areas used as the spatial basis of support in other applications.

  12. The Impact of Divergence Time on the Nature of Population Structure: An Example from Iceland

    E-Print Network [OSTI]

    Reich, David

    The Impact of Divergence Time on the Nature of Population Structure: An Example from Iceland Alkes, Reykjavik, Iceland, 5 University of Iceland, Reykjavik, Iceland, 6 Department of Mental Health, University The Icelandic population has been sampled in many disease association studies, providing a strong motivation

  13. Population declines are associated with changes in the balance of productivity, survival, immigration and

    E-Print Network [OSTI]

    Lambin, Xavier

    for the Protection of Birds, 12-14 North End Road, Stromness, Orkney, KW16 3AG, UK and 4Aberdeen Population Ecology in the world (Brown 1982). This monitoring has quantified a dramatic population decline over the last 20 years

  14. A Measurement Study of Virtual Populations in Massively Multiplayer Online Games

    E-Print Network [OSTI]

    GauthierDickey, Chris

    change over time, how are players distributed in the virtual world, how much churn occurs with players show that populations fluctuate according to a prime-time schedule, player distribution and churn in populations over time; 2) Arrival rates and session duration of players: the arrival rates and session lengths

  15. Effect of solar wind variation on low-energy O+ populations in the magnetosphere during

    E-Print Network [OSTI]

    Carlson, Charles W.

    Effect of solar wind variation on low-energy O+ populations in the magnetosphere during geomagneticFadden, E. J. Lund, and C. W. Carlson (2008), Effect of solar wind variation on low-energy O+ populations 2008. [1] The relationship between solar wind conditions and variations in low-energy (

  16. An Efficient Probabilistic Population-Based Descent for the Median Genome Problem

    E-Print Network [OSTI]

    Goëffon, Adrien

    An Efficient Probabilistic Population-Based Descent for the Median Genome Problem Adrien Goëffon@labri.fr ABSTRACT We present a novel population-based local search algorithm for the median genome problem of ancestral genome reconstruc- tion compared to existing methods, making it possible to tackle problems where

  17. Precipitation and Temperature Effects on Populations of Aedes albopictus (Diptera: Culicidae): Implications for Range Expansion

    E-Print Network [OSTI]

    Juliano, Steven A.

    ARTICLE Precipitation and Temperature Effects on Populations of Aedes albopictus (Diptera and precipitation regime encountered over the life cycle of Aedes albopictus (Skuse) affects populations. Caged precipitation regimes: (1) low ßuctuation regime - water within the containers was allowed to evaporate to 90

  18. Population Synthesis in the Blue IV: Accurate Model Predictions for Lick Indices and UBV Colors in Single Stellar Populations

    E-Print Network [OSTI]

    Ricardo P. Schiavon

    2006-11-15

    [Abridged] We present new model predictions for 16 Lick absorption line indices from Hdelta through Fe5335, and UBV colors for single stellar populations (SPs) with ages ranging between 1 and 15 Gyr, [Fe/H] ranging from -1.3 to +0.3, and variable abundance ratios. We develop a method to estimate mean ages and abundances of Fe, C, N, Mg, and Ca that explores the sensitivity of the various indices to those parameters. When applied to high-S/N Galactic cluster data, the models match the clusters' elemental abundances and ages with high precision. Analyzing stacked SDSS spectra of early-type galaxies brighter than Lstar, we find mean luminosity-weighted ages of the order of ~ 8 Gyr and iron abundances slightly below solar. Abundance ratios, [X/Fe], are higher than solar, and correlate positively with galaxy luminosity. Nitrogen is the element whose abundance correlates the most strongly with luminosity, which seems to indicate secondary enrichment. This result may impose a lower limit of 50-200 Myr to the time-scale of star formation in early-type galaxies. Unlike in the case of clusters, in galaxies bluer Balmer lines yield younger ages than Hbeta. This age discrepancy is stronger for lower luminosity galaxies. We examine four scenarios to explain this trend. The most likely is the presence of small amounts of a young/intermediate-age SP component. Two-component models provide a better match to the data when the mass fraction of the young component is a few %. This result implies that star formation has been extended in early-type galaxies, and more so in less massive galaxies, lending support to the ``downsizing'' scenario. It also implies that SP synthesis models are capable of constraining not only the mean ages of SPs in galaxies, but also their age spread.

  19. The LandScan Global Population Distribution Project: Current State of the Art and Prospective Innovation

    SciTech Connect (OSTI)

    Rose, Amy N; Bright, Eddie A

    2014-01-01

    Advances in remote sensing, dasymetric mapping techniques, and the ever-increasing availability of spatial datasets have enhanced global human population distribution databases. These datasets demonstrate an enormous improvement over the conventional use of choropleth maps to represent population distribution and are vital for analysis and planning purposes including humanitarian response, disease mapping, risk analysis, and evacuation modeling. Dasymetric mapping techniques have been employed to address spatial mismatch, but also to develop finer resolution population distributions in areas of the world where subnational census data are coarse or non-existent. One such implementation is the LandScan Global model which provides a 30 arc-second global population distribution based on ancillary datasets such as land cover, slope, proximity to roads, and settlement locations. This work will review the current state of the LandScan model, future innovations aimed at increasing spatial and demographic resolution, and situate LandScan within the landscape of other global population distribution datasets.

  20. A new population of WIMPs in the solar system and indirect detection rates

    E-Print Network [OSTI]

    Lars Bergstrom; Thibault Damour; Joakim Edsjo; Lawrence M. Krauss; Piero Ullio

    2000-12-11

    A new Solar System population of Weakly Interacting Massive Particle (WIMP) dark matter has been proposed to exist. We investigate the implications of this population on indirect signals in neutrino telescopes (due to WIMP annihilations in the Earth) for the case when the WIMP is the lightest neutralino of the MSSM, the minimal supersymmetric extension of the standard model. The velocity distribution and capture rate of this new population is evaluated and the flux of neutrino-induced muons from the center of the Earth in neutrino telescopes is calculated. We show that the effects of the new population can be crucial for masses around 60-120 GeV, where enhancements of the predicted muon flux from the center of the Earth by up to a factor of 100 compared to previously published estimates occur. As a result of the new WIMP population, neutrino telescopes should be able to probe a much larger region of parameter space in this mass range.