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Sample records for african american black

  1. Black California Dreamin': The Crises of California's African-American Communities

    E-Print Network [OSTI]

    Woods, Clyde

    2012-01-01

    out to black workers as the Kaiser Shipyards did Bay Areato work in the shipyards surrounding San Francisco Bay inexamine African-American shipyard workers, they primarily

  2. AFRICAN AMERICAN PSYCHOLOGY Sample Syllabus

    E-Print Network [OSTI]

    Hopfinger, Joseph B.

    AFRICAN AMERICAN PSYCHOLOGY PSYC 503 Sample Syllabus Course Description and Overview: This course examines the psychology of the African American experience. We begin the course with an overview of Black/African American psychology as an evolving field of study and consider the Black/African American Psychology

  3. From Pain to Peace: An African American Woman Finding Voice in Black Womanist Theology 

    E-Print Network [OSTI]

    Abney, Angela

    2014-12-12

    in many ways, 2) African American women pass strength on as a legacy, 3) African American women rely on church and God in their leadership, and 4) African American women’s views on education are paramount in the African American community. The most...

  4. Black Cowboys and Black Masculinity African American Ranchers, Rodeo Cowboys and Trailriders 

    E-Print Network [OSTI]

    Babers, Myeshia Chanel

    2014-12-17

    in the works of W. E. B. DuBois, Booker T. Washington, and Cater G. Woodson. Although disciplinary approaches, individual motivations, and prescriptions for the perceived “Negro Problem” in America vary, one common issue that scholars reproach is the idea... information about Black cowboys creates a peculiar position regarding notions, representations, and understandings about the racially signified cowboys. One common issue regarding Black identity that scholars reproach is the idea that it is pathological...

  5. Precedents in African American architecture

    E-Print Network [OSTI]

    Sass, Lawrence

    1994-01-01

    As a sub-sets of American culture, African Americans have not been able to offer culturally specific architectural elements to the design process because the history of African American form and space has not been recognized ...

  6. LGBT African-American Individuals and African-American Same-Sex Couples

    E-Print Network [OSTI]

    Gates, Gary J.; Kastanis, Angel

    2013-01-01

    of African-American same-sex couples are raising children.African-American same-sex couples raising children reportAfrican- American different-sex couples ($47,300 vs. $

  7. Heart Healthy Home Cooking African American Style

    E-Print Network [OSTI]

    Shen, Jun

    Heart Healthy Home Cooking African American Style With Every Heartbeat Is Life #12;#12;Heart Recipe Substitutions for Heart Healthy Cooking at the heart of African American family life and special celebrations. This recipe book brings together many

  8. Alone in the profession of arms: America's first three African American West Point graduates 

    E-Print Network [OSTI]

    James, Jeremy Wayne

    2009-05-15

    Following Emancipation, many African Americans came to view military service as a crucial step toward the greater acceptance of blacks into American society and, potentially, toward complete citizenship. Military service ...

  9. The college: Arts & sciences African & African-American Studies

    E-Print Network [OSTI]

    Portman, Douglas

    developments. Biographies of leading musicians and the social conditions in which the music developed are also examined. Finally its enormous impact on American culture both directly and through its descendent rock for the Description. Department: African & African-American Studies Course: AAS 205 Title: Debates and Theories

  10. The African-American house as a vehicle of discovery for an African-American architecture

    E-Print Network [OSTI]

    Clarke, Charles E. (Charles Edward)

    1996-01-01

    The purpose of this research is three-fold: (1) This thesis seeks to uncover evidence of a distinctly African-American architectural form. The primary building type observed will be the house, or the housing of African-Americans ...

  11. African American citizen soldiers in Galveston and San Antonio, Texas, 1880-1906 

    E-Print Network [OSTI]

    Blair, John Patrick

    2009-05-15

    The Texas Volunteer Guard, created by the Militia Law of 1879, continued to allow African Americans to serve as citizen soldiers. From 1880 to 1906 over six hundred black men faithfully served in the various state militia ...

  12. Reclaimed genealogies: reconsidering the ancestor figure in African American women writers’ neo-slave narratives 

    E-Print Network [OSTI]

    Milatovic, Maja

    2014-11-25

    This thesis examines the ancestor figure in African American women writers’ neoslave narratives. Drawing on black feminist, critical race and whiteness studies and trauma theory, the thesis closely reads neo-slave ...

  13. Outside relationality : autobiographical deformations and the literary lineage of Afro-pessimism in 20th and 21st century African American literature

    E-Print Network [OSTI]

    Pak, Yumi

    2012-01-01

    African American Autobiography: A Collection of CriticalStephen. Black Autobiography in America. Amherst: UniversityAutobiographer. ” Studies in Autobiography. Ed. James Olney.

  14. Home Front as Warfront: African American World War I Drama

    E-Print Network [OSTI]

    Egging, Anna Katherine

    2010-08-31

    This dissertation recovers little-known African American World War I plays that blur the boundary between the home front and warfront. I argue that with this focus, the plays wage their own war for African American citizenship ...

  15. A Qualitative Description of African American Women's Breastfeeding Experiences

    E-Print Network [OSTI]

    Spencer, Becky

    2012-08-31

    The low rates of breastfeeding among African American women in the U.S. is a poorly understood, persistent disparity that contributes to higher incidences of morbidity and mortality for African Americans across the lifespan. ...

  16. The relationship between verve and the academic achievement of African American and European American middle school students 

    E-Print Network [OSTI]

    Hawkins, Torrance N.

    2006-04-12

    between African American and European American students? 2. Is there a significant difference in verve levels of African American male and African American female students in middle school? 3. Is there a significant difference in the academic achievement...

  17. Ethnicity and acculturation as moderators of the relationship between media exposure, awareness, and thin-ideal internalization in African American women 

    E-Print Network [OSTI]

    Henry, Keisha Denythia

    2006-10-30

    dissatisfaction were examined. European American students and African American participants from both predominantly White and historically Black colleges and universities completed measures of media exposure, awareness of socicultural attitudes towards appearance...

  18. Engaging African Americans in STEM Education | Department of...

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

    engaging young African American students in STEM (science, technology, engineering, and math) education. Director Dot Harris, who leads the Department's Office of Economic Impact...

  19. Explorative study of African Americans and internet dating 

    E-Print Network [OSTI]

    Spates, Kamesha Sondranek

    2005-02-17

    -1 EXPLORATIVE STUDY OF AFRICAN AMERICANS AND INTERNET DATING A Thesis by KAMESHA SONDRANEK SPATES Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE December 2004 Major Subject: Sociology EXPLORATIVE STUDY OF AFRICAN AMERICANS AND INTERNET DATING A Thesis by KAMESHA SONDRANEK SPATES Submitted to Texas A...

  20. African Americans and the Spanish-American War and Philippine Insurrection: Military Participation, Recognition, and Memory, 1898-1904

    E-Print Network [OSTI]

    Russell, Timothy Dale

    2013-01-01

    and the Spanish American War. ” Indiana Magazine of History,the Spanish American War, The Sixth Virginia Volunteers. ”African Americans and the War Against Spain. ” The North

  1. American racism and African diplomats: race and American Cold War policy in West Africa 

    E-Print Network [OSTI]

    Oriabure, Stephannie Ebhota

    2001-01-01

    ramifications of the experiences of African diplomats in the United States during the Kennedy administration within both a national and international context. African encounters with American racism illustrate the interplay between foreign policy and domestic...

  2. What Shall I Give My Children? Student Affairs Professionals and Their Influence on the Academic Resilience of Underprepared African American Students 

    E-Print Network [OSTI]

    Royal, Genyne L

    2015-06-05

    Currently and historically, the significant gap in educational achievement between Black and White students in P-20 education has influenced the access, persistence, and graduation rates of African Americans in higher ...

  3. Era Bell Thompson: Observations of an American Daughter on the American South and the African Congo

    E-Print Network [OSTI]

    Zacharias, Karenbeth Garvin

    2012-12-31

    ERA BELL THOMPSON: REFLECTIONS IN THE MIRROR OBSERVATIONS OF AN AMERICAN DAUGHTER ON THE AMERICAN SOUTH AND THE AFRICAN CONGO BY KARENBETH G. ZACHARIAS Submitted to the graduate degree program in History and the Graduate Faculty of the University... not have been possible but for the enormous support provided by the Department of History at the University of Kansas. In addition, I would like to thank the Departments of African and African American Studies and Humanities and Western Civilization...

  4. Malignant melanoma in African-Americans

    E-Print Network [OSTI]

    Kabigting, Filamer D; Nelson, Fern P; Kauffman, C Lisa; Popoveniuc, Geanina; Dasanu, Constantin A; Alexandrescu, Doru T

    2009-01-01

    alterations involved in oncogenesis vary by anatomic siteand Asian patients. The oncogenesis of melanoma in African-

  5. Adversarial Diplomacy and African American Politics

    E-Print Network [OSTI]

    Williams II, Ronald Cartell

    2011-01-01

    The Work of Amilcar Cabral. ” The Journal of Modern AfricanPolitical Thought of Amilcar Cabral,” The Journal of ModernThe Work of Amilcar Cabral,” The Journal of Modern African

  6. Exploring Risk and Protective Factors Among African American Males in Alternative and General Education Settings 

    E-Print Network [OSTI]

    Crossley, Tia Billy

    2012-02-14

    to African American males. African American Youth The African American community as a whole has experienced both racism and discrimination. Many African American youth have been vulnerable to academic problems. Adolescence tends to be marked... Youth Risk factors have been characterized as variables that increase the chances of maladaptive outcomes both emotionally and behaviorally (Gutman, Sameroff, & Eccles, 2002; Hanlon et al., 2004). They have been researched throughout the literature...

  7. Predictors of Psychological Health among Rural-Residing African Americans 

    E-Print Network [OSTI]

    Cook, Helene

    2012-10-19

    conducted by (Kogan et al. 2007) which looked at the correlates of elevated depressive symptoms in a sample of African American adults diagnosed with Type 2 diabetes. Results from this investigation revealed that depression, which was measured by the CES-D...

  8. Commemorating Black History: Contributions of African Americans...

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

    late 1980s. Hanford cleanup began in 1989 when a landmark agreement was reached between DOE, the U.S. Environmental Protection Agency and Washington State. Known as the Tri-Party...

  9. ACCEPTABLE HUMANITIES (HU) COURSES * African American Studies

    E-Print Network [OSTI]

    American Literature CAS AA 215 Arts of Africa and its Diaspora American & New England Studies CAS AM 200 and the Art of Film History of Art and Architecture All 100-, 200-, and 300-level CAS AH lecture courses offered in the History of Art & Architecture Department Modern Languages and Comparative Literature CAS LC

  10. Weight-related Beliefs, Behaviors, and Social Networks of Obese, Young Adult African- American Women: Implications for Healthy Weight Interventions 

    E-Print Network [OSTI]

    Rollins, Brandy 1982-

    2012-12-10

    Obesity is a public health concern that affects over 30% of Americans. Approximately 78% of African-American women are overweight/obese, as compared to 46% of Caucasian women. Obese African-American women are at higher ...

  11. An Autoethnographic Study: An African American Woman’s Perception of her Journey to the Principalship 

    E-Print Network [OSTI]

    Rose, Shirley A

    2013-05-02

    The purpose of this qualitative autoethnographic study was to add to the research of African American female secondary principals. Most research in the field of education concerning women reflects women in general and is not specific to African...

  12. BLACK HISTORY MONTH

    Broader source: Energy.gov [DOE]

    Black History Month is an annual celebration of achievements by black Americans and a time for recognizing the central role of African Americans in U.S. history. The event grew out of “Negro History Week,” created by historian Carter G. Woodson and other prominent African Americans. Other countries around the world, including Canada and the United Kingdom, also devote a month to celebrating black history.

  13. Black Boundary Lines: Race, Class and Gender among Black Undergraduate Students

    E-Print Network [OSTI]

    Morales, Erica

    2012-01-01

    C. 1994. Behind the Mule: Race and Class in African AmericanHarlemworld: Doing Race and Class in Contemporary BlackBlue-Chip Black: Race, Class and Status in the New Black

  14. Voices of Four African American Female Clergy and Their Perceptions of Gender, Equity, and Leadership Styles in the African American Urban Church 

    E-Print Network [OSTI]

    Ogletree, Evelyn 1954-

    2012-11-30

    pastors for a span of four decades. This dissertation shares the challenges, barriers, and support to female pastors. This study examined personal characteristics, acts of leadership, and acts of negotiating the system within the African American church...

  15. Successful African American students in two-way immersion programs: parent and student perceptions 

    E-Print Network [OSTI]

    Boone, Sonia Kay

    2009-05-15

    The purpose of this study was to examine perceptions of possible factors that lead to academic success for African American children who participated in two-way immersion programs. In order to examine the perceptions, the ...

  16. Examining the therapeutic compliment with African-Americans: a counseling technique to improve the working alliance 

    E-Print Network [OSTI]

    Duncan, Bryan Thomas

    2009-05-15

    . In this study, the therapeutic compliment is defined, discussed, and compared with other therapeutic interventions to find its usefulness in therapy and its ability to impact the working alliance. 120 African-Americans from a large southwestern university and a...

  17. Rape Victimization and High Risk Sexual Behaviors: A Longitudinal Study of African-American Adolescent Females

    E-Print Network [OSTI]

    2011-01-01

    Date violence and date rape among adolescents: Associations31. Wingood GM, DiClemente RJ. Rape among African-Americanand white American women’s rape. J Social Issues. 1992;48:

  18. African American Women in Appalachia: Personal Expressions of Race, Place and Gender 

    E-Print Network [OSTI]

    Barbour-Payne, Yunina Carol

    2014-06-04

    African American women in Appalachia have lived, survived and long been overlooked by dominant narratives that support stereotypical depictions of the Appalachian region and its inhabitants. A little over twenty years ago, ...

  19. African-American fathers’ perspectives on their children’s health education: a qualitative, exploratory study 

    E-Print Network [OSTI]

    Odum, Mary; Smith, Matthew Lee; McKyer, E. Lisako J.

    2014-12-08

    Purpose: To investigate African-American fathers’ (AAF) perceptions regarding the applicability and need for their involvement as a health connection for their children and describe how participating fathers’ behavior was ...

  20. The Leadership Perspectives of African American Males after Participation in a Leadership Development Program 

    E-Print Network [OSTI]

    Preston, Tammie M

    2014-10-14

    This study investigated the perceptions of African American undergraduate males who attend a predominately White institution in the southwest as they concern leadership after participation in a leadership development program and the influence...

  1. High School Dropout: Perceptions and Voices of African American and Hispanic Students 

    E-Print Network [OSTI]

    Baker, Wanda

    2011-08-08

    The purpose of this study was to investigate the perceptions of African American and Hispanic students who dropped out of school while exploring their schooling experiences and the factors they believe contributed to their decision to drop out...

  2. African American Student Athletes at Predominately White Institutions and Motivational Factors That Influence Graduate and Professional Degrees 

    E-Print Network [OSTI]

    Rutledge, Michael E

    2015-01-22

    This study highlights African American male student athletes at PWI’s, and their motivational factors that influenced persistence into graduate school. The following research questions guided this study: (a) How do African ...

  3. The Motivators that Contribute to the Migration of African American Educators from Suburban School Districts to Urban School Districts 

    E-Print Network [OSTI]

    McGary, Ostrova Dewayne

    2012-07-16

    district as an institution is not responsible or accountable for the African American educators migration, it can provide systems of support and initiatives for African America educators to assist them in overcoming the motivators inside of the school walls...

  4. Selection Process for Third and Fourth Grade African American Gifted and Talented: A Case Study in One Urban School District 

    E-Print Network [OSTI]

    Brazile, Ruth Delories

    2011-10-21

    : Percentage of reporting districts offering Gifted and Talented . .......... 16 Table II-2: Representation Ratio of African and European Americans. ................ 31 Table IV-1: Demographics by Gender, Age, Ethnicity and Grade Taught. ........... 82... and Talented Program. .............................................................................................. 16 Figure II-2: Representation of African American and European American students in Gifted and Talented programs (states A...

  5. Black African Women's Motivations for Involvement in Southern African Liberation Struggles 

    E-Print Network [OSTI]

    Jalufka, Alaina 1987-

    2011-04-26

    Since the introduction of colonialism, African women have frequently been ignored in and excluded from political life in southern Africa. However, many women participated as freedom fighters and activists in southern ...

  6. Case Study of Rural High School Math Teachers of African American Students 

    E-Print Network [OSTI]

    Jones, Marcus Gee

    2014-05-03

    despite decades of reform efforts (Darling- Hammond, 2010; Ladson-Billings, 2006). According to the National Center for Education Statistics (NCES), in 2011, African American students scored 31 points less than their European American counterparts... examination. Moreover, the 31-point gap is exacerbated by the fact teachers are not taught these culturally responsive strategies in teacher preparation programs (Bondy et al, 2007; Gay & Kirkland, 2003; Ladson- Billings, 1997). During this study, I...

  7. A REVOLUTION WITHIN A REVOLUTION: AFRICAN AMERICAN AND WOMEN BEAT POETS 

    E-Print Network [OSTI]

    Abernethy, Olivia

    2008-08-19

    . As the metal, is hot, it is not, given to love. It burns the thing inside it. And that thing screams. 24 The transformation seen in this excerpt of the poem hints at the subtle yet distinctive tinge of reproach Jones feels as an African American...

  8. An Admixture Scan in 1,484 African American Women with Breast Cancer

    E-Print Network [OSTI]

    Reich, David

    An Admixture Scan in 1,484 African American Women with Breast Cancer Laura Fejerman,1 Christopher A women with breast cancer present more commonly with aggressive tumors that do not ex- press the estrogen-wide scan to search for risk alleles for breast cancer that are highly differentiated in fre- quency between

  9. HIV/AIDS in African-Americans Christopher Evans, MD/MPH

    E-Print Network [OSTI]

    Chapman, Michael S.

    of Medicine Oregon Health and Science University #12;Disclosure I have no actual or potential conflict of interest in relation to this program/presentation #12;"Of all the forms of inequality, injustice in health in particular. 2005 Nationwide survey of African-Americans 26% believe HIV was made in a US government lab 15

  10. Commemorating Black History: Contributions of African Americans to the

    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 GasAdjustmentsShirleyEnergyTher i n c i p aDepartment of Energyof theActionDepartment

  11. Negotiating Worlds, Managing Subjectivities, and Redefining Selves: The Lived Experiences of African American Undergraduate Females at Predominately White Institutions 

    E-Print Network [OSTI]

    Allen, Ayana Ma-El

    2011-02-22

    A narrative analysis of the lived experiences of seven undergraduate African American females at Predominately White Institutions (PWIs) is presented in this study. The purpose of the study was to explore the ways the ...

  12. The effects of neighborhood environments on the level of physical activity among older african american women in Texas 

    E-Print Network [OSTI]

    Shin, Woo Hwa

    2009-05-15

    The older African American women living Texas fall into one of the most inactive population segments. Recently, the importance of socio-ecological models on human health behavior and more complex associations between ...

  13. Our Relationship, My Academia: Historical and Hegemonic Implications Imbuing Academically Successful African American Women from Single-mothered Families 

    E-Print Network [OSTI]

    Johnson, Johnitha Watkins

    2013-12-04

    nurturing Mother- biological female parent who concurrently assumes maternal nurturing Negro- a late 19th century term used to define U. S. born Americans of African descent; also used as a term of reproach given its association with racial epithets...

  14. African American Urban Female Students' Perceptions of Social Factors Impacting Their Academic Achievement in One Public School District 

    E-Print Network [OSTI]

    Shelby-King, Rhonda Evette

    2011-08-08

    The purpose of this study was to investigate the impact of social factors affecting the academic achievement of secondary African American urban (AAU) female students in an urban school district. This study determined ...

  15. An Examination of Household Environmental Influences on Healthy Eating Behaviors among African American Primary Caregivers and Children 

    E-Print Network [OSTI]

    Arthur, Tya Michelle

    2012-02-14

    fruits and vegetables, fruit and vegetable selection self-efficacy, and self-efficacy for healthful child feeding). The strongest predictor of fruit and vegetable consumption by African American children was the fruit and vegetable consumption by primary...

  16. African-American food and social relations in Bryan, Texa: a culinary ethnography at the community cafe 

    E-Print Network [OSTI]

    Markowitz, Bradford Alan

    2000-01-01

    The aim of this thesis is to demonstrate how food mediates social relations at two African-American cafes in Bryan, Texas. To accomplish this goal, this thesis utilizes ethnographic data collected from the methodological perspective of the food...

  17. Urban African-American Single Mothers Using Resiliency And Racial Socialization To Influence Academic Success In Their Young Sons 

    E-Print Network [OSTI]

    Henderson-Hubbard, Lisa Doris

    2012-02-14

    research. 11 This study investigated the experiences of African-American single mothers in an urban school in a specific city in south Texas, not the state or nation as a whole. Also, participants represented a purposeful sample of single African...

  18. The Voices of Five African American Children of Incarcerated Parents 

    E-Print Network [OSTI]

    Larke, Altricia

    2014-05-08

    On any given day, more than two million children are affected by the incarceration of their parents. A plethora of research has been gathered from the point of view of others involved in this American travesty, such as the ...

  19. Guide to subjects African American Studies 55, 90

    E-Print Network [OSTI]

    Mateo, Jill M.

    American History 11, 24, 27, 48- 49, 52, 78, 80, 87, 89 Anthropology 62-65, 101, 119, 140 Architecture 2 East, Africa, India, and Pakistan The University of Chicago Press c/o John Wiley & Sons Ltd

  20. The Puzzle of Discipline: An Examination of African American Disproportionality in School Discipline and Student Performance 

    E-Print Network [OSTI]

    Butler, Bettie Ray

    2012-07-16

    Lewis; Carolyn and Tommie Lohman; Dr. Paula McClain; Dr. Brian McKenzie; Dr. Kenneth Meier; Dr. Erin Melton; LaJune Minor; Dr. vii vi i Samuel Moseley; Pastor Marie Nutall; Dr. Mitchell Rice; LaToya Robinson; Dr. James Steele; Minnie and Felix...-2006 .................................................................................................. 110 B9 Correlation Results: Reading Proficiency and African American Males, 2005-2006 .................................................................................................. 111 B10 Correlation Results: Math Proficiency...

  1. An Examination of Elementary School Teachers' Belief about Their African American Students with an Analysis of Selected Characteristics of Schools in One Urban School District 

    E-Print Network [OSTI]

    Marrero, Otoniel

    2010-10-12

    The purpose of this study was to examine the relationship between five factors: teacher efficacy, teacher beliefs, cultural responsive classroom management, cultural awareness, and cultural sensitivity among African American, European American...

  2. Perceptions of Five Middle School Science Teachers: A Suburban Success Story on the Texas Assessment of Knowledge and Skills Achievement for Eighth Grade African American Students 

    E-Print Network [OSTI]

    Henry, Cheryl Turner

    2012-07-16

    The purpose of this qualitative study was to examine a problem of practice present in an actual school district. The study examined the achievement gap that existed between African American and European American students ...

  3. Contributions of vital rates to growth of a protected population of American black bears

    E-Print Network [OSTI]

    Mitchell, Mike

    Contributions of vital rates to growth of a protected population of American black bears Michael S have evaluated such contributions of vital rates to l for American black bears (Ursus americanus). We sensitivity and elasticity analyses to examine the actual and potential contributions of variation of vital

  4. Reading the (In)visible Race: African-American Subject Representation and Formation in American Literature

    E-Print Network [OSTI]

    Hollingsworth, Lauren Colleen

    2010-01-01

    Black Women Writing Autobiography: A Tradition Within aGusdorf, Georges. “Conditions and Limits of Autobiography. ”Autobiography: Essays Theoretical and Critical. Ed and

  5. Black Image in Cinema and Theatre in America

    E-Print Network [OSTI]

    Williams, Grayling

    1983-01-01

    BLACK IMAGE IN CINEMA AND THEATRE IN AMERICA* By GraylingIN THE AFRICAN-AMERICAN CINEMA Given the lack of informationa Negro's Ambition (1916). The cinema therefore provided the

  6. "When you want to give up, you want to give in": Mentoring perceptions of African American women doctoral students at a predominately White institution 

    E-Print Network [OSTI]

    Fowler, Rhonda Michelle

    2013-08-08

    meaning of their mentoring experiences with at a predominantly White institution (PWI). The research questions to guide this study were: (1) what are the perceptions of faculty mentoring for African American female doctoral students in this HRD program...

  7. The Effects of Surrogate Caregivers on The Relationship Between Fatherless/Fatherloss African American Male Youths and Their Level of Delinquent Behavior 

    E-Print Network [OSTI]

    Carter-Haith, James A., Jr.

    2010-01-14

    behaviors in the youth. Other researchers, Mackey & Mackey (2003), seem to agree that the total absence of a male role model has a direct affect on the aggression level of the African American male youths. 8 8 This review will focus on developmental... on the delinquency of African American male youths than previously indicated (Mackey & Mackey, 2003). Research reports a positive correlation between the quality of the father-child relationship and self-esteem, but does not solely identify fatherloss...

  8. African Americans and the Spanish-American War and Philippine Insurrection: Military Participation, Recognition, and Memory, 1898-1904

    E-Print Network [OSTI]

    Russell, Timothy Dale

    2013-01-01

    American Rebel in the Philippine, 1899-1901. ” The PacificSpanish-American War and Philippine Insurrection: Militaryofficers serving in the Philippines), acknowledged that the

  9. A Link To The Future: A Pilot Study Look at How Historically Black Colleges and Universities With Journalism and Mass Communications Units Use The Internet in Recruiting

    E-Print Network [OSTI]

    Crawford II, Jerry L.

    2012-04-01

    Historically Black Colleges and Universities (HBCUs) have had the ability to recruit African-American students since the 1860s by stressing a sense of inclusion and family through their mission statements and community ...

  10. Freedom's Journal and El Clamor Publico: African American and Mexican American Cultural Fronts in Nineteenth-Century Newsprint

    E-Print Network [OSTI]

    Nunez, Arturo Romero

    2010-01-01

    Newspaper, by Jacqueline Bacon. Afro-Americans in New YorkNewspaper, by Jacqueline Bacon. Journal of the EarlyPublishing, 2006. Print. Bacon, Jacqueline. “‘Acting as

  11. Probability Background Black Scholes for European Call/Put Options Risk-Neutral Measure American Options and Duality Mathematical Finance

    E-Print Network [OSTI]

    Morrow, James A.

    -Neutral Measure American Options and Duality Definition A stochastic process is a family (Xt ) of real valuedProbability Background Black Scholes for European Call/Put Options Risk-Neutral Measure American Options and Duality Mathematical Finance Option Pricing under the Risk-Neutral Measure Cory Barnes

  12. Breaking ground in Canaan: African-American community in Lawrence, 1870-1920

    E-Print Network [OSTI]

    Fowler III, Paul E.

    2014-04-01

    ’s allowed blacks and whites to eat in the same dining room, though still segregated by a wooden partition that separated the lunch counter; whites ate on the side nearest the door while blacks ate on the side furthest from the door and out of sight...-1865, Kansas History 12 (Spring 1989): 31. 2. Ibid, 37. 3. Priscilla F. Clement, Growing Pains: Children in the Industrial Age, 1850-1890 (New York: Twayne Publishers, 1997), 24. 4. Ibid. 5. Leavenworth Daily Conservative, February 7, 1862. 7. “The Contraband...

  13. Black California Dreamin': The Crises of California's African-American Communities

    E-Print Network [OSTI]

    Woods, Clyde

    2012-01-01

    California aircraft, shipbuilding, food processing, clothingEast Bay Area where shipbuilding employment predominated.Shipyards that had four shipbuilding facilities. 50 This

  14. American Suppliers: The Role of Americans in the Perpetuation and Maintenance of the Postwar Black Market in Germany 

    E-Print Network [OSTI]

    Fasulo, Micheal

    2012-02-14

    market as an essentially German experience, populated in the main by Germans and displaced persons. In so doing, I posit a schema of American illicit supply to Germans and displaced persons. This thesis argues that Americans operated as suppliers...

  15. The State of California and Southern African Racism

    E-Print Network [OSTI]

    Harrington, John

    1972-01-01

    28. -ll9- BACKGROUND - TO - RACISM AND AMERICAN --- FIRMS -with Southern African racism. (Firms underlineaBl conduct

  16. Percieved influence of societal dissonance, self-efficacy, African American male mentorship, and institutional support on the success of African American Males in a predominantly whie insitution of higher education 

    E-Print Network [OSTI]

    Brown, Ronald William

    2009-05-15

    For the past decade the attainment gap in college admission and graduation rates between Black males and their White counterparts has continued to grow. A growing body of research has held that there is a negative correlation ...

  17. The Prancing J-Settes: Race, Gender, and Class Politics and the Movements of Black Women in the African Diaspora 

    E-Print Network [OSTI]

    Wicks, Amber

    2013-07-03

    TABLE OF CONTENTS .................................................................................................. vi CHAPTER I INTRODUCTION CAN?T A BLACK WOMAN DANCE? ....................... 1 A Legacy of Defying Erasure...?...................... 101 From Movement to Academics: ?J-Sette Isn?t for Everyone? ................................... 107 A Legacy of Struggle ................................................................................................. 110 The Prancing J...

  18. Black Moms and “White Motherhood Society”: African-American Middle-Class Mothers’ Perspectives on Work, Family and Identity

    E-Print Network [OSTI]

    Dow, Dawn

    2011-01-01

    Forthcoming. “Crossing Class Boundaries: Race, Siblings andKaufman, Peter. 2005. “Middle-Class Social Reproduction. ”Ethnicity, Gender, and Class. ” Journal of Marriage and

  19. The Relationship Between Teachers' Preparation and Perceived Level of Technology Use in Mathematics With Middle School African American Males 

    E-Print Network [OSTI]

    Mason, Sherrie Dee

    2012-10-19

    , multistep problems, U.S. students are still stuck in arithmetic, moving onto algebra and other topics only in the 8th or 9th grades if they do so at all. (p. 308) According to NAEP data, the math scores for urban inner city school districts fall below... AMERICAN MALES A Dissertation by SHERRIE DEE MASON Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved by: Chair of Committee, Norvella P...

  20. 2014 American Geophysical Union. All rights reserved. A seamless assessment of the role of convection in the water cycle of the West African Monsoon

    E-Print Network [OSTI]

    Marsham, John

    been established, the terms of the water budgets act to reinforce the biases, effectively locking for both the prediction of hazardous weather (floods, drought) and for water and food security under of convection in the water cycle of the West African Monsoon C. E. Birch 1 *, D. J. Parker 1 , J. H. Marsham 1

  1. Celebrating Black History Month with DOE's Christopher Smith...

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

    Christopher A. Smith Christopher A. Smith Assistant Secretary for Fossil Energy Throughout the month of February, we've been introducing remarkable African Americans who are...

  2. Performative Returns and the Rememory of History: genealogy and performativity in the American racial state

    E-Print Network [OSTI]

    Kokontis, Kate Menninger

    2011-01-01

    of Immigration, Italian-ness, and the Port-of-Entry: on thecitizenship, American-ness, and belonging) and blackness (and therefore American-ness, has come to mean. 5 Thus it is

  3. The Influence of Caregiver-Child Acculturation Gap on Mexican American Adolescents' Depression and Suicidality 

    E-Print Network [OSTI]

    Piñ a-Watson, Brandy Michelle

    2014-05-27

    Latino adolescents are at an elevated risk of depression and suicidality when compared to their European American and African American counterparts. The purpose of this dissertation is to examine cultural and familial risk ...

  4. Myth, Stereotype, and the Rape of Black Women

    E-Print Network [OSTI]

    Burrell, Darci E.

    1993-01-01

    Social Construction of a Rape Victim: Stories of African-American Males About the Rape of Desiree Washington, 1992 U.e.g. , SUSAN ESrRCH, REAL RAPE 3 (1987). (U]nder the best

  5. Adversarial Diplomacy and African American Politics

    E-Print Network [OSTI]

    Williams II, Ronald Cartell

    2011-01-01

    Robinson’s autobiography as the primary source of somethis autobiography, while functioning as a primary source on

  6. 21M.670 / SP.472 / WGS.472 Traditions in American Concert Dance: Gender and Autobiography, Spring 2003

    E-Print Network [OSTI]

    DeFrantz, Thomas

    This course explores the forms, contents, and contexts of world traditions in dance that played a crucial role in shaping American concert dance. For example, we will identify dances from an African American vernacular ...

  7. African-American Studies 46. . . . . . . . . . . American Studies 48. . . . . . . . . . . . . . . . . .

    E-Print Network [OSTI]

    Aalberts, Daniel P.

    . . . . . . . . . . . . . . . . . . . . . . . . . . History 182. . . . . . . . . . . . . . . . . . . . . . . . . . History of Science 202. . . . . . . . . . . . . . Russian 299. . . . . . . . . . . . . . . . . . . . . . . . . Science and Technology Studies 302. . . . . . . . . . History of the College 3

  8. Toward the African Cinema

    E-Print Network [OSTI]

    Minot, Gilbert

    1983-01-01

    TOWARD THE AFRICAN CINEMA* By Gilbert Minot Guinea gainedAfrica to devise a national cinema policy. So we created, ascontact with the different cinemas in Africa. For in-

  9. Final Report: African Power/Energy and Environmental Development Plan, July 1, 1994 - August 21, 1999

    SciTech Connect (OSTI)

    Butler, John M.

    1999-08-21

    In 1994 AEF signed a Cooperative Agreement with DOE to address a program called the African Power /Energy and Environmental Development Plan. The Program initially addressed five area: (1) Historical Black Colleges and Universities Energy/Environmental Program; (2) The Department of Energy and United States Private Industry Africa Program; (3) The Annual United States Energy Study Tour; (4) South African Training Program, and (5) South African Environmental Program. The programs were implemented in conjunction with DOE, institutions, agencies and the private sector support in the USA and within African nations. AEF has worked with government and technical representatives from 13 African nations and expanded the program to address sponsorship of South African students in Historical Black Colleges and Universities, supporting DOE trade missions through participation and planning, and giving presentations in the U.S., and Africa regarding business opportunities in the African energy sector. The programs implemented have also opened doors for the US private sector to seek business opportunities in Africa and for African nations to gain exposure to US products and services.

  10. Black/brown cooperation and conflict in the education policymaking process 

    E-Print Network [OSTI]

    Rocha, Rene Rolando

    2006-10-30

    The way race works to shape politics is changing as demographic patterns alter the traditional dynamic of race relations throughout the United States. One pattern is the increased tendency of African-Americans and Latinos ...

  11. The Color of Self-Love: Exposing Racism in Black Female Masturbation Research

    E-Print Network [OSTI]

    Frank, Elena

    2010-01-01

    Americans, Gender, and the New Racism. New York: Routledge,of Self-Love: Exposing Racism in Black Female Masturbationsexual deviance and construct racism and sexism. BLACK/WHITE

  12. Proceedings of the 24th Day of Scientific lectures and 20th Annual Meeting of the National Society of Black Physicists

    SciTech Connect (OSTI)

    Jackson, K.H; Carwell, H.V.

    1999-11-29

    The National Society of Black Physicists will hold its Twentieth annual meeting and its XXIIII Day of Scientific Lectures at Lawrence Berkeley National Laboratory on March 27th - 30th, 1997. The meeting provides a major opportunity for African American physicists and students to present their current research and discuss issues germane to the constituency. It is therefore crucial to have the broadest cross-section of the membership at each meeting. The Lawrence Berkeley National Laboratory was chosen as the site of the 20th annual meeting because of its historical significance to Physics (being one of the first national laboratories in the United States) and the laboratories continuing support of the goals and objectives of the society.

  13. Fast Food, Slow Death and the Propaganda of Health: Jewel Thais-Williams’ Radical Battle for Black Survival

    E-Print Network [OSTI]

    Hope, Analena

    2011-01-01

    Black, health, fast, food, justice, survival, Jewel Thais-characteristics associated with the location of food storesand food service places”. American Journal of Preventive

  14. African oil plays

    SciTech Connect (OSTI)

    Clifford, A.J. )

    1989-09-01

    The vast continent of Africa hosts over eight sedimentary basins, covering approximately half its total area. Of these basins, only 82% have entered a mature exploration phase, 9% have had little or no exploration at all. Since oil was first discovered in Africa during the mid-1950s, old play concepts continue to bear fruit, for example in Egypt and Nigeria, while new play concepts promise to become more important, such as in Algeria, Angola, Chad, Egypt, Gabon, and Sudan. The most exciting developments of recent years in African oil exploration are: (1) the Gamba/Dentale play, onshore Gabon; (2) the Pinda play, offshore Angola; (3) the Lucula/Toca play, offshore Cabinda; (4) the Metlaoui play, offshore Libya/Tunisia; (5) the mid-Cretaceous sand play, Chad/Sudan; and (6) the TAG-I/F6 play, onshore Algeria. Examples of these plays are illustrated along with some of the more traditional oil plays. Where are the future oil plays likely to develop No doubt, the Saharan basins of Algeria and Libya will feature strongly, also the presalt of Equatorial West Africa, the Central African Rift System and, more speculatively, offshore Ethiopia and Namibia, and onshore Madagascar, Mozambique, and Tanzania.

  15. The Historically Black Colleges and Universities/Minority Institutions Environmental Technology Consortium annual report 1994--1995

    SciTech Connect (OSTI)

    1998-07-01

    The HBCU/MI ET Consortium was established in January 1990, through a Memorandum of Understanding (MOU) among its member institutions. This group of research oriented Historically Black Colleges and Universities and Minority Institutions (HBCU/MIs) agreed to work together to initiate or revise education programs, develop research partnerships with public and private sector organizations, and promote technology development to address the nation`s critical environmental contamination problems. The Consortium`s Research, Education and Technology Transfer (RETT) Plan became the working agenda. The Consortium is a resource for collaboration among the member institutions and with federal an state agencies, national and federal laboratories, industries, (including small businesses), majority universities, and two and four-year technical colleges. As a group of 17 institutions geographically located in the southern US, the Consortium is well positioned to reach a diverse group of women and minority populations of African Americans, Hispanics and American Indians. This Report provides a status update on activities and achievements in environmental curriculum development, outreach at the K--12 level, undergraduate and graduate education, research and development, and technology transfer.

  16. "we have . . . kept the negroes' goodwill and sent them away": black sailors, white dominion in the new navy, 1893-1942 

    E-Print Network [OSTI]

    Williams, Charles Hughes

    2009-05-15

    Between 1893 and 1920 the rising tide of racial antagonism and discrimination that swept America fundamentally altered racial relations in the United States Navy. African Americans, an integral part of the enlisted force ...

  17. Environmentalism and the Politics of Equity: Emergent Trends in the Black Community

    E-Print Network [OSTI]

    Bullard, Robert; Wright, Beverly Hendrix

    1987-01-01

    . That is, the abili ty of the tobacco giants to exercise their constitutional rights. Tobacco and liquor companies provide generous contributions to black "causes" and buy considerable advertizing space and time in black newspapers and. magazines. Black... ENVIRONMENTALISM AND THE POLITICS OF EQUITY: EMERGENT TRENDS IN THE BLACK COMMUNITY· Robert Bullard University oj Tennessee-Knoxville Beverly Hendrix Wright Universityo fNew Orleans Mid-American Review of Sociology, 1987, Vol. XII, No. 2:21-38 The environmental...

  18. West African crude production diversifies

    SciTech Connect (OSTI)

    Aalund, L.

    1983-06-01

    Nigeria, with its seven crude-oil export streams, dominated West African production and accounted for over 70% of the depressed 1.8 million b/d output from the region last year. However, during the 1970s a flurry of new producing fields, primarily off the African coast, diversified production among a number of countries and touched off a wave of oil activity. The Journal takes a close look at the quality of West African oil in this installment of assays on world export crudes. This issue covers, in alphabetical order, Bonny Light (Nigeria) to Espoir (Ivory Coast). A following issue will wrap up West Africa by presenting assays on crudes from Forcados Blend (Nigeria) to Zaire Crude (Zaire).

  19. Visual Power: 21st Century Native American Artists/Intellectuals

    E-Print Network [OSTI]

    Farris, Phoebe

    2006-10-01

    to include ex hibits reflecting such diverse cultures as African American Quilts, Ester Hernandez: The Art of Provocation, and Co-Madres Artistas: Voces de laMujer, while still maintaining a strong Native American presence. His own work uses pop culture... art. Visual Power is an outgrowth of a 2003 College Art Association panel that I chaired titled Native American Artists/Intellectuals: Speaking for Ourselves in the 21st Century and a concurrent art exhibition of the same title that I guest curated...

  20. Facility Request Form H. Fred Simons African American Cultural Center

    E-Print Network [OSTI]

    Alpay, S. Pamir

    Requested? Yes No Setup Request: Chairs Podium Microphone Round Tables Special Requirements This event has-3180 Phone: (860) 486-3433 Fax (860) 486-1193 Square Tables Page 1 Print Form #12;AACC Facility Usage. Advisor Address Advisor Email Signature Approval Disapproval Date Date Dr. Willena K. Price, Director Page

  1. African American Fathers’ Perceptions of Childhood Overweight: An Exploratory Study 

    E-Print Network [OSTI]

    Byrd, Vanessa

    2012-02-14

    Childhood overweight/obesity (CHO) is a serious health concern for children and adolescents. Despite increased efforts to prevent CHO, prevalence rates have actually increased. Evidence suggests that parents are critical ...

  2. Reinnovating the African-American Shotgun House [Roots

    E-Print Network [OSTI]

    Tucker, Sheryl G

    1995-01-01

    houses' spare, identical elements — factory- made, double-hung windows, standard- sized wooden attic grills, prefabricated

  3. Prevalence and correlates of sun protection behaviors among African Americans

    E-Print Network [OSTI]

    Pichon, Latrice Crystal

    2008-01-01

    K.D. , Elder, J.P. (2007). Sun sensitivity in five USC. A. , Velicer, W. F. , Sun, X. , Fava, J. L. , et al. (H. K. , & Nadel, M. (1997). Sun protection behaviors of the

  4. Neighborhood effects on use of African-American Vernacular English

    E-Print Network [OSTI]

    2015-01-01

    the U.S. Department of Housing and Urban Development (HUD).the time of writ- ing, HUD plans to make the data availableresearch/pdr_data-license.html). HUD expects to arrange for

  5. A Proclamation: President Obama on National African American...

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

    face of both racial and gender discrimination. As courageous visionaries who led the fight to end slavery and tenacious activists who fought to expand basic civil rights to all...

  6. Understanding the experiences of African American outdoor enthusiasts 

    E-Print Network [OSTI]

    Cavin, Drew Alan

    2009-05-15

    The study of race/ethnicity and leisure has been an area of great interest to researchers since at least the 1970s. Numerous studies have shown that differences exist in the ways people from different racial/ethnic groups ...

  7. National African American History Month, 2013: A Presidential Proclamation

    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 GasAdjustmentsShirleyEnergyTher i nAand DOEDepartment ofProgram | DepartmentEnergy6 3 9 12 6 3 9 12 6 3 9|

  8. A Proclamation: President Obama on National African American History Month,

    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 GasAdjustmentsShirleyEnergyTher i n c i p a l De p u t y A s s iof1 of 8(May 1983) |Univ. ofOccurrenceA2012 |

  9. Engaging African Americans in STEM Education | Department of Energy

    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 GasAdjustmentsShirley Ann JacksonDepartment ofOffice ofofWind ProjectsEfficiencyPreparedKY The City4,|

  10. ETHNIC STUDIES (AFRICAN & AFRICAN AMERICAN STUDIES) 2008-2010 DEGREE PLAN (expires 08/2016)

    E-Print Network [OSTI]

    Pillow, Jonathan

    hours Selected from Architecture, Classics, Fine Arts, Philosophy, or list of approved alternatives C as follows: 2 courses (at least 6 hours) in each of the following areas:* A) Africa: _________ _________ B

  11. The Impact of Negative Stereotypes & Representations of African-Americans in the Media and African-American Incarceration

    E-Print Network [OSTI]

    Johnson, Tamara Therese

    2012-01-01

    was the New Orleans Superdome (a venue for sporting andconcert events). The Superdome quickly became inhospitable

  12. Del Black

    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 NewsInformation Current HAB Packet HanfordDOEDanielDe novo Design ofDefects LeadDel Black Del

  13. Clandestine Mediterranean: Arab-African Migrant Literature

    E-Print Network [OSTI]

    Al-Mousawi, Nahrain

    2012-01-01

    architecture appropriate to the Muslim culture they implanted on the northern edges of Black Africa.

  14. The American Muslim Dilemma: Christian Normativity, Racialization, And Anti-Muslim Backlash 

    E-Print Network [OSTI]

    Kamran, Omar

    2012-10-19

    perspective and understanding as to why Muslim and non-Muslim Arabs, South Asians, and African Americans have been subjected to rising suspicion, surveillance, imprisonment, and violence in a post 9/11/2001 era. This thesis posits the notion of the white...

  15. The lost revolution : capitalism, democracy and black citizenship in early twentieth-century America's biggest race conflicts

    E-Print Network [OSTI]

    Butler, Katonio A. (Katonio Arthella)

    2007-01-01

    This new racial conflict over the future of blacks' social, political and economic self determination became an inescapable "trial by fire" for American democracy. Throughout the United States, W.E.B. Du Bois' "New Negroes," ...

  16. Asian American and African American masculinities : race, citizenship, and culture in post-civil rights

    E-Print Network [OSTI]

    Chon-Smith, Chong

    2006-01-01

    as complicit with dominant cinematic practices. ” 202 Thisis the process in which cinematic texts bestow subjectivityfrom it. What I term cinematic citizenship is the complex

  17. Asian American and African American masculinities : race, citizenship, and culture in post-civil rights

    E-Print Network [OSTI]

    Chon-Smith, Chong

    2006-01-01

    Eroticized Asian in Gay Male Porn,” in Q&A: Queer in AsianEroticized Asian in Gay Male Porn. ” In Q&A: Queer in AsianEroticized Asian in Gay Male Porn,” in Q&A: Queer in Asian

  18. Supermassive Black Holes

    E-Print Network [OSTI]

    Laura Ferrarese; David Merritt

    2002-06-13

    After a brief historical introduction, we summarize current efforts and accomplishments in the study of supermassive black holes.

  19. Black Pine Engineering

    Office of Energy Efficiency and Renewable Energy (EERE)

    Black Pine Engineering is commercializing a disruptive technology in the turbomachinery industry. Using a patented woven composite construction, Black Pine Engineering can make turbomachines (turbines, compressors) that are cheaper and lighter than competing technologies. Using this technology, Black Pine Engineering will sell turbo-compressors which solve the problem of wasted steam in geothermal power plants.

  20. Bright Lights, Black Leather 

    E-Print Network [OSTI]

    LaSalle, R.

    1995-01-01

    My research is a qualitative study about the Asian American experience. Studies have shown that Asian Americans obtain high levels of educational attainment and household income, but these figures are misleading. Asian ...

  1. GROWTH OF SOUTH AFRICAN AFRICA' ~-' ,, I

    E-Print Network [OSTI]

    GROWTH OF SOUTH AFRICAN FISHERIES -SQUTH-: WEST .-' AFRICA' ~-' ,, I I , I :--. .,' UN I .............................................. Regrouping of Interests ······························ Fisheries Development Corporation of South Africa, Ltd and the trawling interests, respectively. The quasi-official Fisheries Develop- ment Corporation of South Africa

  2. Magnetized static black Saturn

    E-Print Network [OSTI]

    Stoytcho S. Yazadjiev

    2008-02-06

    We construct a new static solution to the 5D Einstein-Maxwell equations describing a static black hole surrounded by a non-rotating dipole black ring. The configuration is kept in equilibrium by an external magnetic field interacting with the dipole charge of the black ring. The properties of the black Saturn-like configuration are studied and the basic physical quantities are calculated. The solution demonstrates 2-fold continuous non-uniqueness of the 5D magnetized static neutral black objects for fixed total mass and Melvin background.

  3. english 31AC african-amercan studies 17AC history 7B public health 130AC sociology 3AC education 30AC ethnic studies 135AC geography 150AC history 127AC information 142AC psychology 125AC anthropology 2AC american

    E-Print Network [OSTI]

    Alvarez-Cohen, Lisa

    · anthropology 2AC · american studies 10AC · gender and womens studies 50AC · music 26AC · spanish 135AC 50AC · music 26AC · spanish 135AC · sociology 190AC · public policy 117AC · peace and conflict studies 10AC · gender and womens studies 50AC · music 26AC · spanish 135AC · sociology 190AC · public

  4. Bicycling Black Rings

    E-Print Network [OSTI]

    Henriette Elvang; Maria J. Rodriguez

    2008-01-25

    We present detailed physics analyses of two different 4+1-dimensional asymptotically flat vacuum black hole solutions with spin in two independent planes: the doubly spinning black ring and the bicycling black ring system ("bi-rings"). The latter is a new solution describing two concentric orthogonal rotating black rings which we construct using the inverse scattering technique. We focus particularly on extremal zero-temperature limits of the solutions. We construct the phase diagram of currently known zero-temperature vacuum black hole solutions with a single event horizon, and discuss the non-uniqueness introduced by more exotic black hole configurations such as bi-rings and multi-ring saturns.

  5. Bicycling Black Rings

    E-Print Network [OSTI]

    Elvang, Henriette

    2008-01-01

    We present detailed physics analyses of two different 4+1-dimensional asymptotically flat vacuum black hole solutions with spin in two independent planes: the doubly spinning black ring and the bicycling black ring system ("bi-rings"). The latter is a new solution describing two concentric orthogonal rotating black rings which we construct using the inverse scattering technique. We focus particularly on extremal zero-temperature limits of the solutions. Such limits exist for both types of solutions; for the bi-rings it is obtained when the two rings drag each other to extremality through the effect of gravitational frame-dragging. We construct the phase diagram of currently known zero-temperature vacuum black hole solutions with a single event horizon, and discuss the non-uniqueness introduced by more exotic black hole configurations such as bi-rings and multi-ring saturns.

  6. Feral Africanized honey bee ecology in a coastal prairie landscape 

    E-Print Network [OSTI]

    Baum, Kristen Anne

    2004-09-30

    for feral honey bees than others. Colonies were aggregated within the study area, probably due to the distribution of resources. The invasion of Africanized honey bees appeared to fragment the existing European population, with Africanized colonies...

  7. Communication Factors Affecting African Policymakers' Decisions about Agricultural Biotechnology 

    E-Print Network [OSTI]

    Begashaw, Belay Ejigu

    2010-10-12

    The purpose of this study was to develop a model for impacting decisions on agricultural biotechnology practices in food production among African policymakers. The research focused on three African countries, namely, South Africa, Malawi and Ghana...

  8. Accreting Black Holes

    E-Print Network [OSTI]

    Begelman, Mitchell C

    2014-01-01

    I outline the theory of accretion onto black holes, and its application to observed phenomena such as X-ray binaries, active galactic nuclei, tidal disruption events, and gamma-ray bursts. The dynamics as well as radiative signatures of black hole accretion depend on interactions between the relatively simple black-hole spacetime and complex radiation, plasma and magnetohydrodynamical processes in the surrounding gas. I will show how transient accretion processes could provide clues to these interactions. Larger global magnetohydrodynamic simulations as well as simulations incorporating plasma microphysics and full radiation hydrodynamics will be needed to unravel some of the current mysteries of black hole accretion.

  9. Wildlife Monitoring and Conservation in a West African Protected Area

    E-Print Network [OSTI]

    Burton, Andrew Cole

    2010-01-01

    25, 49-52. Revilla E. , Palomares F. & Delibes M. (2001).African carnivores (Palomares & Caro 1999; Caro & Stoner

  10. Rotating Hairy Black Holes

    E-Print Network [OSTI]

    B. Kleihaus; J. Kunz

    2000-12-20

    We construct stationary black holes in SU(2) Einstein-Yang-Mills theory, which carry angular momentum and electric charge. Possessing non-trivial non-abelian magnetic fields outside their regular event horizon, they represent non-perturbative rotating hairy black holes.

  11. Roadmap: Pan-African Studies Pan-African Studies Bachelor of Arts [AS-BA-PAS-PAS

    E-Print Network [OSTI]

    Sheridan, Scott

    Roadmap: Pan-African Studies ­ Pan-African Studies ­ Bachelor of Arts [AS-BA-PAS-PAS] College: 22-Apr-13/LNHD This roadmap is a recommended semester-by-semester plan of study for this major Non-PAS Elective 3 General Elective (upper division) 9 #12;Roadmap: Pan-African Studies ­ Pan

  12. "Hybrid" Black Holes

    E-Print Network [OSTI]

    Valeri P. Frolov; Andrei V. Frolov

    2014-12-30

    We discuss a solution of the Einstein equations, obtained by gluing the external Kerr metric and the internal Weyl metric, describing an axisymmetric static vacuum distorted black hole. These metrics are glued at the null surfaces representing their horizons. For this purpose we use the formalism of massive thin null shells. The corresponding solution is called a "hybrid" black hole. The massive null shell has an angular momentum which is the origin of the rotation of the external Kerr spacetime. At the same time, the shell distorts the geometry inside the horizon. The inner geometry of the "hybrid" black hole coincides with the geometry of the interior of a non-rotating Weyl-distorted black hole. Properties of the "hybrid" black holes are briefly discussed.

  13. Half the Household Was African: Recovering the Histories of Two African Slaves in Iran

    E-Print Network [OSTI]

    Lee, Anthony A.

    2015-01-01

    of the Babi movement in Iran. See also, Harris, The AfricanTauris, 2005): 171. 11 In Iran, at this time, the price of aWomen in Nineteenth-Century Iran: The Life of Fezzeh Khanom

  14. GAUDINO INITIATIVE: DANGEROUS COURSES AFR 320(S) Dangerous Bodies: Black Womanhood, Sexuality and Popular Culture (Same as AMST 320 and WGSS 402)

    E-Print Network [OSTI]

    Aalberts, Daniel P.

    269 GAUDINO INITIATIVE: DANGEROUS COURSES AFR 320(S) Dangerous Bodies: Black Womanhood, Sexuality. This course is part of the Gaudino Danger Initiative. Format: seminar. Requirements: evaluation will be based: Graphic Novels & Dangerous Histories of the African Diaspora (Same as AMST 323, ARTH 223, COMP 322

  15. CHAPTER FOUR Global and African Regional Climate

    E-Print Network [OSTI]

    deMenocal, Peter B.

    45 CHAPTER FOUR Global and African Regional Climate during the Cenozoic SARAH J. FEAKINS AND PETER by significant climate change. Major global changes included massive tectonic reorganization, a reduction in atmospheric pCO2 (Pagani et al., 1999; Pearson and Palmer, 2000), and a dramatic cooling of global climate

  16. Honda: North American Manufacturing Facilities | Department of...

    Office of Environmental Management (EM)

    Honda: North American Manufacturing Facilities Honda: North American Manufacturing Facilities From October, 2008 Honda: North American Manufacturing Facilities More Documents &...

  17. PURDUE UNIVERSITY BLACK CULTURAL CENTER

    E-Print Network [OSTI]

    Pittendrigh, Barry

    traveled to Detroit, Michigan to study our fall research theme, " Black Detroit: The History, Movement

  18. Black Holes and Galaxy Evolution

    E-Print Network [OSTI]

    David Merritt

    1999-10-29

    Supermassive binary black holes and their influence on the structure and evolution of galaxies is reviewed.

  19. Summation over histories for a particle in spherical orbit around a black hole

    SciTech Connect (OSTI)

    Bernido, C.C.; Aguarte, G.

    1997-08-01

    An exact path integral treatment of a relativistic scalar particle in a spherical orbit around a Reissner-Nordstr{umlt o}m and Schwarzschild black hole is presented. A closed form for the Green function and the energy spectrum are obtained. {copyright} {ital 1997} {ital The American Physical Society}

  20. Eighteenth-century colonial American merchant ship construction 

    E-Print Network [OSTI]

    VanHorn, Kellie Michelle

    2005-02-17

    ); and the Charon, Yorktown, Virginia (1778). Finally, two small riverine craft were also considered: the Brown?s Ferry vessel, Black River, South Carolina (pre-1740s) and the Town Point vessel, Pensacola, Florida (1763-1781). Figure 1 shows a map of these vessel...) (Head of Department) December 2004 Major Subject: Anthropology iii ABSTRACT Eighteenth-Century Colonial American Merchant Ship Construction. (December 2004) Kellie Michelle VanHorn, B.S., Indiana University Chair of Advisory...

  1. Aging in American Convents

    E-Print Network [OSTI]

    Corwin, Anna I.

    2009-01-01

    Schuster. Snowdon, David 2001 Aging with Grace: What the Nunreligion, devotion, and aging. CSW JAN09 update tocAging in American Convents FIELDWORK REPORT by Anna I.

  2. American Institute of Aeronautics Astronautics

    E-Print Network [OSTI]

    American Institute of Aeronautics Astronautics Study Cylindrical Thruster Low Power Space scaling of magnetic circuit leaves almost no magnetic Copyright American Institute Aeronautics; American Institute of Aeronautics Astronautics ability coaxial thrusters achieve performance moderate power

  3. Empowering the Next Generation: Connecting the U.S. and African...

    Energy Savers [EERE]

    Empowering the Next Generation: Connecting the U.S. and African Nations through Technical Exchanges Empowering the Next Generation: Connecting the U.S. and African Nations through...

  4. The Role of the State in Influencing African Labour Outcomes in Spain and Portugal

    E-Print Network [OSTI]

    Mendoza, Cristóbal

    2000-01-01

    The point to stress here is that African labour outcomes arestress here is that, unlike Spain, the state does not 'push' PALOP Africans into secondary labour

  5. Black Holes In Astronomy Black Holes In Astronomy

    E-Print Network [OSTI]

    Wagner, Stephan

    Black Hole horizon static limit ergosphere radiation magnetic fields jet jet #12;Black-hole accretion with a central bulge. #12;Click to edit Master text styles Second level Third level Fourth level Fifth level Jets and lobes of Cygnus A Carilli et al. Supermassive black holes are the most powerful engines in the Universe

  6. Selecting renal replacement therapies: what do African American and non-African American patients and their families think others should know? A mixed methods study

    E-Print Network [OSTI]

    2013-01-01

    similar. Conclusions: Educational resources addressing thedecisions [15]. Educational resources describing the fea-be featured in educational resources informing RRT selection

  7. African American Parent Involvement: An examination of the characteristics that determine the most successful school and parent relationships between lower socioeconomic, African American parents, and highly effective schools

    E-Print Network [OSTI]

    Williams, Marcheta Ganther

    2011-01-01

    working together. Early Childhood Education Journal, 23(2),a model for early childhood education. For the first 20providing adult and early childhood education services to

  8. The renaissance of black phosphorus

    E-Print Network [OSTI]

    Ling, Xi

    One hundred years after its first successful synthesis in the bulk form in 1914, black phosphorus (black P) was recently rediscovered from the perspective of a 2D layered material, attracting tremendous interest from ...

  9. Americans Abroad: A Global Diaspora?

    E-Print Network [OSTI]

    Croucher, Sheila

    2012-01-01

    D. “Confederate Migration to Mexico. ” Hispanic AmericanHarmon, “Confederate Migration to Mexico,” Hispanic AmericanUS Retirement Migration to Mexico and Panama. Washington,

  10. Black Holes And Their Entropy 

    E-Print Network [OSTI]

    Mei, Jianwei

    2010-10-12

    . . . . . . . . . 21 1. Solutions in Four Dimensions . . . . . . . . . . . . . . 22 2. Solutions in Higher Dimensions . . . . . . . . . . . . . 27 C. Black Hole Solutions in Supergravity Theories . . . . . . . 30 D. Plebanski-Demianski Type Solutions in d = 5... is to discuss the construction of new black hole solutions and the calculation of the black hole entropy. In Chapter II, we shall re- port some new black hole solutions that we have found during the past few years [21, 22, 23] and we will discuss some...

  11. The Historically Black Colleges and Universities/Minority Institutions Environmental Technology Consortium annual report, 1991--1992

    SciTech Connect (OSTI)

    1992-12-31

    The member institutions of the Consortium continue to play a significant role in increasing the number of African Americans who enter the environmental professions through the implementation of the Consortium`s RETT Plan for Research, Education, and Technology Transfer. The four major program areas identified in the RETT Plan are as follows: (1) minority outreach and precollege education; (2) undergraduate education and postsecondary training; (3) graduate and postgraduate education and research; and (4) technology transfer.

  12. Black Holes at Accelerators

    E-Print Network [OSTI]

    Bryan Webber

    2006-04-06

    In theories with large extra dimensions and TeV-scale gravity, black holes are copiously produced in particle collisions at energies well above the Planck scale. I briefly review some recent work on the phenomenology of this process, with emphasis on theoretical uncertainties and possible strategies for measuring the number of extra dimensions.

  13. Quantum black hole inflation

    E-Print Network [OSTI]

    M. B. Altaie

    2001-05-07

    In this paper we follow a new approach for particle creation by a localized strong gravitational field. The approach is based on a definition of the physical vacuum drawn from Heisenberg uncertainty principle. Using the fact that the gravitational field red-shifts the frequency modes of the vacuum, a condition on the minimum stregth of the gravitational field required to achieve real particle creation is derived. Application of this requirement on a Schwartzchid black hole resulted in deducing an upper limit on the region, outside the event horizon, where real particles can be created. Using this regional upper limit, and considering particle creation by black holes as a consequence of the Casimir effect, with the assumption that the created quanta are to be added to the initial energy, we deduce a natural power law for the development of the event horizon, and consequently a logarithmic law for the area spectrum of an inflating black hole. Application of the results on a cosmological model shows that if we start with a Planck-dimensional black hole, then through the process of particle creation we end up with a universe having the presently estimated critical density. Such a universe will be in a state of eternal inflation.

  14. Gasification of black liquor

    DOE Patents [OSTI]

    Kohl, Arthur L. (Woodland Hills, CA)

    1987-07-28

    A concentrated aqueous black liquor containing carbonaceous material and alkali metal sulfur compounds is treated in a gasifier vessel containing a relatively shallow molten salt pool at its bottom to form a combustible gas and a sulfide-rich melt. The gasifier vessel, which is preferably pressurized, has a black liquor drying zone at its upper part, a black liquor solids gasification zone located below the drying zone, and a molten salt sulfur reduction zone which comprises the molten salt pool. A first portion of an oxygen-containing gas is introduced into the gas space in the gasification zone immediatley above the molten salt pool. The remainder of the oxygen-containing gas is introduced into the molten salt pool in an amount sufficient to cause gasification of carbonaceous material entering the pool from the gasification zone but not sufficient to create oxidizing conditions in the pool. The total amount of the oxygen-containing gas introduced both above the pool and into the pool constitutes between 25 and 55% of the amount required for complete combustion of the black liquor feed. A combustible gas is withdrawn from an upper portion of the drying zone, and a melt in which the sulfur content is predominantly in the form of alkali metal sulfide is withdrawn from the molten salt sulfur reduction zone.

  15. Gasification of black liquor

    DOE Patents [OSTI]

    Kohl, A.L.

    1987-07-28

    A concentrated aqueous black liquor containing carbonaceous material and alkali metal sulfur compounds is treated in a gasifier vessel containing a relatively shallow molten salt pool at its bottom to form a combustible gas and a sulfide-rich melt. The gasifier vessel, which is preferably pressurized, has a black liquor drying zone at its upper part, a black liquor solids gasification zone located below the drying zone, and a molten salt sulfur reduction zone which comprises the molten salt pool. A first portion of an oxygen-containing gas is introduced into the gas space in the gasification zone immediately above the molten salt pool. The remainder of the oxygen-containing gas is introduced into the molten salt pool in an amount sufficient to cause gasification of carbonaceous material entering the pool from the gasification zone but not sufficient to create oxidizing conditions in the pool. The total amount of the oxygen-containing gas introduced both above the pool and into the pool constitutes between 25 and 55% of the amount required for complete combustion of the black liquor feed. A combustible gas is withdrawn from an upper portion of the drying zone, and a melt in which the sulfur content is predominantly in the form of alkali metal sulfide is withdrawn from the molten salt sulfur reduction zone. 2 figs.

  16. Department of Industrial Engineering Spring 2011 African Climate Exchange II

    E-Print Network [OSTI]

    Demirel, Melik C.

    PENNSTATE Department of Industrial Engineering Spring 2011 African Climate Exchange II Overview Mr. Sisay Shimelis, the sponsor and contact at African Climate Exchange approached the Industrial for packaging of the product, to reduce automation and increase job availability. Approach All required demands

  17. CONFERENCE OF THE SOUTH AFRICAN SOCIETY FOR PLANT PATHOLOGY

    E-Print Network [OSTI]

    THE 48TH CONFERENCE OF THE SOUTH AFRICAN SOCIETY FOR PLANT PATHOLOGY Prepared by Arista Fourie The South African Society for Plant Pathology held their 48th conference at the scenic ATKV, Klein Kariba as quarantine regulations. The conference was attended by about 160 members representing regions

  18. Mid-American Review of Sociology, Volume 6, Number 2 (WINTER, 1981): Back Matter

    E-Print Network [OSTI]

    1981-01-01

    , Charles Vert. A New Look at Black Families. 2nd ed. Bayside, N.V.: General Hall, 1981. SUBSCRIPTION ORDER FORM . Editor-In-Chief Mid-American Review of Sociology University of Kansas Sociology Department Lawrence, Kansas 66045 TO WHOM IT MAY CONCERN...

  19. Statistical Mechanics of Black Holes

    E-Print Network [OSTI]

    B. Harms; Y. Leblanc

    1992-05-11

    We analyze the statistical mechanics of a gas of neutral and charged black holes. The microcanonical ensemble is the only possible approach to this system, and the equilibrium configuration is the one for which most of the energy is carried by a single black hole. Schwarzschild black holes are found to obey the statistical bootstrap condition. In all cases, the microcanonical temperature is identical to the Hawking temperature of the most massive black hole in the gas. U(1) charges in general break the bootstrap property. The problems of black hole decay and of quantum coherence are also addressed.

  20. Pan African Technologies | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsourceII JumpQuarterly Smart GridNorth Carolina: EnergyIncPan African Technologies Jump

  1. Identification of Astrophysical Black Holes

    E-Print Network [OSTI]

    Sandip K. Chakrabarti

    1998-03-19

    Black holes are by definition black, and therefore cannot be directly observed by using electromagnetic radiations. Convincing identification of black holes must necessarily depend on the identification of a very specially behaving matter and radiation which surround them. A major problem in this subject of black hole astrophysics is to quantify the behaviour of matter and radiation close to the horizon. In this review, the subject of black hole accretion and outflow is systematically developed. It is shown that both the stationary as well as the non-stationary properties of the observed spectra could be generally understood by these solutions. It is suggested that the solutions of radiative hydrodynamic equations may produce clear spectral signatures of black holes. Other circumstantial evidences of black holes, both in the galactic centers as well as in binary systems, are also presented.

  2. Dehumanization of the Black American Female: An American/Hawaiian Experience

    E-Print Network [OSTI]

    Hairston, Kimetta R.

    2008-01-01

    April 23, 1999). Is trouble brewing? Honolulu Star Bulletin.aptly titled Is trouble brewing? outlined ten incidents of

  3. Black Hole Scan

    E-Print Network [OSTI]

    Juan Crisostomo; Ricardo Troncoso; Jorge Zanelli

    2000-09-22

    Gravitation theories selected by requiring that they have a unique anti-de Sitter vacuum with a fixed cosmological constant are studied. For a given dimension d, the Lagrangians under consideration are labeled by an integer k=1,2,...,[(d-1)/2]. Black holes for each d and k are found and are used to rank these theories. A minimum possible size for a localized electrically charged source is predicted in the whole set of theories, except General Relativity. It is found that the thermodynamic behavior falls into two classes: If d-2k=1, these solutions resemble the three dimensional black hole, otherwise, their behavior is similar to the Schwarzschild-AdS_4 geometry.

  4. Black holes at accelerators.

    E-Print Network [OSTI]

    Webber, Bryan R

    be presented and the effects of some of the uncertainties can be investigated. 3.1. Hawking Spectrum With the above assumptions, the spectrum of particles emitted during black hole decay takes the form dN dE ? ?E2 (eE/TH ? 1) T n+6H (8) where as usual... the trapped surface area [6, 7]. T030 02 4 6 8 10 0 0.2 0.4 0.6 0.8 1 1.2 n=0 n=1 n=2 n=6 E rS ?ˆ (0 ) ab s/ pi r2 S Figure 4: Grey-body factors for scalar emission on the brane from a (4 + n)D black hole. 0 2 4 6 8 10 0 0.2 0.4 0.6 0.8 1 1.2 n=0 n=1 n=2 n=6 E...

  5. Lienert named American Welding Society Fellow

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

    Lienert Named American Welding Society Fellow Lienert named American Welding Society Fellow Lienert was inducted into the American Welding Society's 2012 Class of Fellows during...

  6. Black Pine Circle Project

    SciTech Connect (OSTI)

    Mytko, Christine

    2014-03-31

    A group of seventh graders from Black Pine Circle school in Berkeley had the opportunity to experience the Advanced Light Source (ALS) as "users" via a collaborative field trip and proposal project. The project culminated with a field trip to the ALS for all seventh graders, which included a visit to the ALS data visualization room, a diffraction demonstration, a beamline tour, and informative sessions about x-rays and tomography presented by ALS scientists.

  7. Black Pine Circle Project

    ScienceCinema (OSTI)

    Mytko, Christine

    2014-09-15

    A group of seventh graders from Black Pine Circle school in Berkeley had the opportunity to experience the Advanced Light Source (ALS) as "users" via a collaborative field trip and proposal project. The project culminated with a field trip to the ALS for all seventh graders, which included a visit to the ALS data visualization room, a diffraction demonstration, a beamline tour, and informative sessions about x-rays and tomography presented by ALS scientists.

  8. Black Hole Demographics

    E-Print Network [OSTI]

    Laura Ferrarese

    2002-03-04

    The purpose of this contribution is to review the current status of black hole demographics in light of recent advances in the study of high redshift QSOs (section 2), local AGNs (section 3) and local quiescent galaxies (section 4). I will then outline the prospects for future progress (section 5), and discuss what I believe will be the challenges for the years to come [ABRIDGED].

  9. Black Africans in Barcelona, Spain: An Exploration of Integration into Catalan Society

    E-Print Network [OSTI]

    Osuji, Chinyere

    2006-01-01

    either the Guinean or Spanish government in order to studypesetas from the Spanish government. He articulated that

  10. Asian American women entrepreneurs

    E-Print Network [OSTI]

    Suh, Clara J

    2014-01-01

    There are an estimated 620,300 firms owned by Asian American women nationwide, and they contribute $105 billion to the U.S. economy. They are also active in Greater Boston's innovation and entrepreneurship communities. ...

  11. The great American garage

    E-Print Network [OSTI]

    Miller, B. Alex (Brian Alex), 1977-

    2004-01-01

    How does one explore the suburban home? Go in through the garage, of course. Sales, bands, suicides, and business startups: The suburban garage is the most culturally flexible space in the entire American domestic environment. ...

  12. American Nuclear Society Awards

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

    Nuclear Society Awards Established in 1999 by the Fusion Energy Division of the American Nuclear Society (ANS) and named after LLNL's co-founder, the Edward Teller Medal recognizes...

  13. Freedom's Journal and El Clamor Publico: African American and Mexican American Cultural Fronts in Nineteenth-Century Newsprint

    E-Print Network [OSTI]

    Nunez, Arturo Romero

    2010-01-01

    Power and Press Freedom in Liberia, 1839-1970: The Impact ofJohn H. B. Maryland in Liberia. A Paper read before theand the Settlements of Liberia. ” Slavery and Abolition. 21:

  14. Freedom's Journal and El Clamor Publico: African American and Mexican American Cultural Fronts in Nineteenth-Century Newsprint

    E-Print Network [OSTI]

    Nunez, Arturo Romero

    2010-01-01

    Repository and Colonial Journal. Vol XII. Virginia: Americanin Virginia 1660- 1710. ” Journal of Social History 7.1 (M. “John B. Russwurm. ” The Journal of Negro History 13.4 (

  15. Voices of four African American and European American female principals and their leadership styles in a recognized urban school district 

    E-Print Network [OSTI]

    Turner, Clara Thompson

    2004-11-15

    in secondary educational leadership positions exercised and (re)interpreted (Dillard, 1995) their leadership. The intent of my case study was to broaden the limited research base relating to the lived stories and experiences of the principalship from those...

  16. Freedom's Journal and El Clamor Publico: African American and Mexican American Cultural Fronts in Nineteenth-Century Newsprint

    E-Print Network [OSTI]

    Nunez, Arturo Romero

    2010-01-01

    Sonora: The Geography, History, and Resources of the SilverSonora: The Geography, History, and Resources of the SilverSonora: The Geography, History, and Resources of the Silver

  17. East African coast overlooked. [Oil and gas potential of the east African coast

    SciTech Connect (OSTI)

    Not Available

    1994-09-01

    This paper reviews the petroleum and gas potential of the Tanzania-Mozambique basinal areas. It discusses the locations of the various sedimentary basins in the onshore and near offshore areas, including the central African rift zone. The paper describes the structure, stratigraphy, and petroleum geology of these basins. Finally the paper reviews the exploration history and the outlook for the future of these basins.

  18. Black holes in general relativity

    E-Print Network [OSTI]

    Visser, Matt

    2009-01-01

    What is going on (as of August 2008) at the interface between theoretical general relativity, string-inspired models, and observational astrophysics? Quite a lot. In this mini-survey I will make a personal choice and focus on four specific questions: Do black holes "exist"? (For selected values of the word "exist".) Is black hole formation and evaporation unitary? Can one mimic a black hole to arbitrary accuracy? Can one detect the presence of a horizon using local physics?

  19. Quantum Mechanics and Black Holes

    E-Print Network [OSTI]

    Jose N. Pecina-Cruz

    2005-11-27

    This paper discusses the existence of black holes from the foundations of quantum mechanics. It is found that quantum mechanics rule out a possible gravitational collapse.

  20. Common Data Set 2014-2015 B. ENROLLMENT AND PERSISTENCE

    E-Print Network [OSTI]

    Kunkle, Tom

    "Nonresident aliens." Complete the "Total Undergraduates" column only if you cannot provide data for the first aliens 12 74 154 Hispanic/Latino 100 440 445 Black or African American, non- Hispanic 132 684 750 White

  1. Alien Religious Influence on African Religion and Social Change

    E-Print Network [OSTI]

    Anyanwu, Kane C.

    1976-01-01

    ALIEN I£LIGIOlE ItfUW 00 AFRICAN IRIGIOO AND SOCIAL OWH: byare passively absorbing alien influences and that westerntherefore, a knowledge of alien religious beliefs and world-

  2. Water availability, piospheres and evolution in African ruminants 

    E-Print Network [OSTI]

    Derry, Julian F; Dougill, Andy

    2006-07-21

    Water dependency has consequences for the behaviour of African large herbivores from day-to-day and season-to-season. Independently, there have been comparisons made between the water-dependencies of these species and the consequent impact...

  3. The Geography of Narrative: Representations of Place in African Literature

    E-Print Network [OSTI]

    Crowley, Dustin

    2013-05-31

    Questions of geography have been prominent in the criticism of both African literature in particular and postcolonialism in general, including, for instance, issues regarding the nation, globalization, and the urban. Yet ...

  4. Mycosphaerella species causing leaf disease in South African Eucalyptus plantations

    E-Print Network [OSTI]

    Mycosphaerella species causing leaf disease in South African Eucalyptus plantations Gavin C. HUNTER Eucalyptus plantations provide an important source of hardwood for forestry industries, worldwide. Several species of Mycosphaerella are associated with a destructive Eucalyptus leaf disease known

  5. Thermal and mechanical development of the East African Rift System

    E-Print Network [OSTI]

    Ebinger, Cynthia Joan

    1988-01-01

    The deep basins, uplifted flanks, and volcanoes of the Western and Kenya rift systems have developed along the western and eastern margins of the 1300 km-wide East African plateau. Structural patterns deduced from field, ...

  6. Why Blue-Collar Blacks Help Less

    E-Print Network [OSTI]

    Smith, Sandra Susan; Young, Kara Alexis

    2013-01-01

    Exclude Black Men from Blue-Collar Jobs. Berkeley, CA:How Black and Latino Blue Collar Workers Make Decisionsof Sample Respondents Blue-Collar Latinos Blue-Collar Black

  7. Dermoscopy of black-spot poison ivy

    E-Print Network [OSTI]

    Rader, Ryan K; Mu, Ruipu; Shi, Honglan; Stoecker, William V; Hinton, Kristen A

    2012-01-01

    CT, Bean AS. Black-spot poison ivy: A rare phenomenon. J AmJG, Lucky AW. Black spot poison ivy: A report of 5 cases andis unique for black-spot poison ivy. The UFLC-MS/MS urushiol

  8. Green, Black, Lean Six Sigma and Master Black Belt Certifications

    E-Print Network [OSTI]

    Grissino-Mayer, Henri D.

    Green, Black, Lean Six Sigma and Master Black Belt Certifications Green BeLt CertifiCation Candidates may choose from three Green Belts offered: 1) Lean (one week of coursework) 2) Lean Six Sigma (two weeks of coursework) 3) Six Sigma (two weeks of coursework) Green Belt certification is a two

  9. Thermal BEC black holes

    E-Print Network [OSTI]

    Roberto Casadio; Andrea Giugno; Octavian Micu; Alessio Orlandi

    2015-11-04

    We review some features of BEC models of black holes obtained by means of the HWF formalism. We consider the KG equation for a toy graviton field coupled to a static matter current in spherical symmetry. The classical field reproduces the Newtonian potential generated by the matter source, while the corresponding quantum state is given by a coherent superposition of scalar modes with continuous occupation number. An attractive self-interaction is needed for bound states to form, so that (approximately) one mode is allowed, and the system of N bosons can be self-confined in a volume of the size of the Schwarzschild radius. The HWF is then used to show that the radius of such a system corresponds to a proper horizon. The uncertainty in the size of the horizon is related to the typical energy of Hawking modes: it decreases with the increasing of the black hole mass (larger number of gravitons), in agreement with semiclassical calculations and different from a single very massive particle. The spectrum contains a discrete ground state of energy $m$ (the bosons forming the black hole), and a continuous spectrum with energy $\\omega > m$ (representing the Hawking radiation and modelled with a Planckian distribution at the expected Hawking temperature). The $N$-particle state can be collectively described by a single-particle wave-function given by a superposition of a total ground state with energy $M = N m$ and a Planckian distribution for $E > M$ at the same Hawking temperature. The partition function is then found to yield the usual area law for the entropy, with a logarithmic correction related with the Hawking component. The backreaction of modes with $\\omega > m$ is also shown to reduce the Hawking flux and the evaporation properly stops for vanishing mass.

  10. Holographic Black Hole Chemistry

    E-Print Network [OSTI]

    Andreas Karch; Brandon Robinson

    2015-11-02

    Thermodynamic quantities associated with black holes in Anti-de Sitter space obey an interesting identity when the cosmological constant is included as one of the dynamical variables, the generalized Smarr relation. We show that this relation can easily be understood from the point of view of the dual holographic field theory. It amounts to the simple statement that the extensive thermodynamic quantities of a large $N$ gauge theory only depend on the number of colors, $N$, via an overall factor of $N^2$.

  11. You Cannot Press Out the Black Hole

    E-Print Network [OSTI]

    Daisuke Ida; Takahiro Okamoto

    2012-01-03

    It is shown that a ball-shaped black hole region homeomorphic with D**n cannot be pressed out, along whichever axis penetrating the black hole region, into a black ring with a doughnut-shaped black hole region homeomorphic with S**1 x D**(n-1). A more general prohibition law for the change of the topology of black holes, including a version of no-bifurcation theorems for black holes, is given.

  12. Black Stars and Gamma Ray Bursts

    E-Print Network [OSTI]

    Tanmay Vachaspati

    2007-06-08

    Stars that are collapsing toward forming a black hole but are frozen near the Schwarzschild horizon are termed ``black stars''. Collisions of black stars, in contrast to black hole collisions, may be sources of gamma ray bursts, whose basic parameters are estimated quite simply and are found to be consistent with observed gamma ray bursts. Black star gamma ray bursts should be preceded by gravitational wave emission similar to that from the coalescence of black holes.

  13. 56 SCIENTIFIC AMERICAN APRIL 2006 COPYRIGHT 2006 SCIENTIFIC AMERICAN, INC.

    E-Print Network [OSTI]

    Robins, Gabriel

    56 SCIENTIFIC AMERICAN APRIL 2006 COPYRIGHT 2006 SCIENTIFIC AMERICAN, INC. #12;www.sciam.com SCIENTIFIC AMERICAN 57 Computing with Quantum Knots uantum computers promise to perform calculations be- lieved to be impossible for ordinary computers. Some of those calculations are of great real-world

  14. American Association of Petroleum Geologists

    E-Print Network [OSTI]

    Kaufman, Alan Jay

    American Association of Petroleum Geologists 40th Eastern Section Meeting September 24-29, 2011 MEETING SPONSORS #12;2011 Eastern Section American Association of Petroleum Geologists 40th Annual Meeting

  15. Black Holes of Negative Mass

    E-Print Network [OSTI]

    R. B. Mann

    1997-05-06

    I demonstrate that, under certain circumstances, regions of negative energy density can undergo gravitational collapse into a black hole. The resultant exterior black hole spacetimes necessarily have negative mass and non-trivial topology. A full theory of quantum gravity, in which topology-changing processes take place, could give rise to such spacetimes.

  16. The Other Curriculum: Media Representations and College Going Perceptions of African American Males

    E-Print Network [OSTI]

    Roth, Kenneth Robert

    2015-01-01

    C. (1977). Reproduction in Education, Society and Culture.Analysis of Racism in Higher Education. In M. C.Governance in Higher Education (pp. 436-469). Boston, MA:

  17. Does Collective Identity Matter? : African-American Conventional and Unconventional Political Participation

    E-Print Network [OSTI]

    Robnett, Belinda

    2007-01-01

    Johnston editors. Social Movements and Culture. University67. Self, Identity, and Social Movements. Sheldon Stryker,1973. Social Conflict and Social Movements. Prentice-Hall.

  18. Minding "Our Cicero": Nineteenth-Century African American Women's Rhetoric and the Classical Tradition

    E-Print Network [OSTI]

    Morse, Heidi

    2014-01-01

    2013. Quintilian. Institutio Oratoria. Ed. Harold Edgeworths 95 CE Institutio Oratoria (Institutes of Oratory). InQuintilian’s Institutio Oratoria and Cicero’s de Oratore—

  19. Freedom without Equality: Maine Civil War Soldiers' Attitudes about Slavery and African Americans

    E-Print Network [OSTI]

    DeRoche, Andrew J.

    1996-01-01

    Hunt, Hannibal Hamlin of Maine: Lincoln's First John A.Mclntire Papers, University in the small western of Maine.Maine farming community of Peru, which did have a female

  20. Examining the Relationship Between Racial Identity Status and Race-Related Stress in African Americans 

    E-Print Network [OSTI]

    Hurst, Morgan

    2012-02-14

    will be identified; theories for use of stress will be examined, and how racial identity status influences the perception of racism. In addition, individual strategies for coping with racism will be discussed, as well as major approaches to coping that have received...

  1. The Other Curriculum: Media Representations and College Going Perceptions of African American Males

    E-Print Network [OSTI]

    Roth, Kenneth Robert

    2015-01-01

    really nice change. ” Alamo remembers media consumption ashave homework, watch TV…” Alamo is completing a degree inor Tupac or Eminem. ” Alamo grew up in Los Angeles, “not too

  2. 2001 The American Genetic Association 92:475480 Modern African Ape Populations as Genetic

    E-Print Network [OSTI]

    Seaman, Michael I.

    from several independent noncoding nuclear loci, and use these estimates to make predictions about than modern humans. We hypothesize that the last common ancestor (LCA) of these species had for the divergence of the Homo, Pan, and Gorilla lineages suggest that the LCA may have had stronger geographic

  3. Four African American Male Principals and Their Leadership in Urban Elementary Schools 

    E-Print Network [OSTI]

    Moultry, Edrick George

    2014-04-29

    on establishing policies and practices that support the learning of teachers, thereby influencing student outcomes and school improvement (Darling-Hammond 1995, Darling-Hammond and McLaughlin 1998). Fullan (2007), Hargreaves and Goodson (2006), Leithwood et al... are implemented effectively. Researchers have discovered that cultivating a climate that is multicultural is significant because of its affective impact on student learning (Carter & Larke, 1995). For instance, the educational value of culturally responsive...

  4. Colorectal Cancer Screening and Young African-American Men: Male Role Norms, Knowledge, Attitudes, and Perceptions 

    E-Print Network [OSTI]

    Rogers, Charles Ray

    2013-12-05

    of Former Students, Joan Read Endowment for Health and Kinesiology, and the Office of Graduate and Professional Studies at Texas A&M University, which provided the financial support needed to make this study a success. I also want to extend my gratitude... ......................................................................................................... 11 Eligibility Criteria ................................................................................ 11 Information Sources ............................................................................. 11...

  5. Welfare and Conversion: The Catholic Church in African American Communities in the South, 1884-1939 

    E-Print Network [OSTI]

    Collopy, William

    2012-02-14

    The dissertation argues that Catholicism's theology and sacramentalism constituted the foundation of a ministry that from Reconstruction through the 1930s extended the religion's reach in the U.S. beyond its historical loci of numerical strength...

  6. Visibly Invisible: Uncovering Identity for African American Women at an Academically Selective University 

    E-Print Network [OSTI]

    Crear, Shelah Flowers

    2013-07-31

    and photo-elicitation interviewing to actively engage the study’s participants in the process of sharing their identity development and to place their voice and how they make meaning of their complex identities as primary. Examining both their pre...

  7. Use of the Rorschach as a personality assessment tool with African American students 

    E-Print Network [OSTI]

    Velox, Andrea Jean

    2005-08-29

    of this study??s participants was examined. Results revealed significant differences from the norm group on six of the 15 variables for the 11-year-olds in the study group, although not all significance was in the same direction, nor in the direction expected...

  8. Pictures and Progress: Early Photography and the Making of African American Identity

    E-Print Network [OSTI]

    Berger, MA

    2014-01-01

    in white viewing practices. Pictures and Progress is a noveldoi: 10.1093/jahist/jau361 Pictures and Progress: Earlyto their edited volume Pictures and Progress Maurice O.

  9. School racial composition and academic performance of african american students in an urban school district 

    E-Print Network [OSTI]

    Osagie, Andree O.

    2009-05-15

    was used to answer the questions posed. A mixed-model analysis of variance (ANOVA) was employed to analyze school and student level differences between the percentage of minority students in a school and the academic outcomes. Specifically, the reading...

  10. The Other Curriculum: Media Representations and College Going Perceptions of African American Males

    E-Print Network [OSTI]

    Roth, Kenneth Robert

    2015-01-01

    Organizational Analysis of Racism in Higher Education. In M.CA: Sage. Sue, D. W. (2005). Racism and the Conspiracy ofBonilla-Silva, E. (2006). Racism without Racists: Colorblind

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

    E-Print Network [OSTI]

    Evans, Louwanda

    2012-07-16

    theory. Primarily, existing standards of emotional labor in the airline industry are a direct result of institutional structures and cultures created during a period of systematic exclusion that do not account for contemporary racism and sexism. Thus...

  12. Examining the world of subcultural existence: a descriptive analysis of African American management experiences and values 

    E-Print Network [OSTI]

    Stephens, Chandra D.

    2007-04-25

    ) sheds light on the limitations of i n s t r u m e n t s d e s i g n e d t o m e a s u r e h u m a n v a l u e s : ? i n s p e c t i o n o f a n u m b e r o f i nstruments designed to measure human values make it clear..., Clear Lake Chair of Advisory Committee: Dr. Kenneth E. Paprock A s t o d a y ? s g l o b a l b u s i n e s s es acknowledge the criticality of being competitive in international markets, this new awakening also compels these businesses to not just...

  13. Five African American Male Superintendents and Their Leadership in Diverse School Districts in Texas 

    E-Print Network [OSTI]

    Smothers, Aneil 1968-

    2012-11-29

    Introduction .................................................................................... 52 The Equitable Superintendent?s Story ............................................ 54 The Indigenous Superintendent?s Story...

  14. Religion and womanism in the lives of Central Texas African American Baptist women 

    E-Print Network [OSTI]

    Turner, Deidra Rochelle

    2009-05-15

    in line with traditional ideas of gender which includes support for men and an orientation towards others. 24 The women of faith considered the roles of wife and mother to be preeminent. While the Mormon women in Beaman?s (2001) study were... to their husband. Mormon women in Beaman?s (2001) study equated male headship with husband/wife equality. Each person, husband and wife, has specialized areas, or different roles but both set of roles are considered of equal importance. For them...

  15. A case of perforating necrobiosis lipoidica in an African American female

    E-Print Network [OSTI]

    Abdulla, Farah R; Sheth, Pranav B

    2008-01-01

    lipoidica that have perforation as a characteristic change.report, all subsequent cases show perforation histologically

  16. American Cultural History History 390

    E-Print Network [OSTI]

    Fletcher, Robin

    1 American Cultural History History 390 Consider Resources Primary Resources: diaries, letters. popular), theses, the Web Check subject guide under: Research by Subject History by Region American collection unless stated. Album of American History E178 .A2 A (5 volumes; Stauffer ­ Books) Columbia

  17. Central American electrical interconnection

    SciTech Connect (OSTI)

    Not Available

    1988-12-01

    A technical cooperation grant of $2.25 million, designed to strengthen the capacity of Central American countries to operate their regional interconnected electrical system, was announced by the Inter-American Development Bank (IDB). The grant, extended from the banks Fund for Special Operations, will help improve the capacity of the regions electric power companies to achieve economical, safe operation of the interconnected electric power systems. The funds will also be used to finance regional studies of the accords, procedures, regulations, and supervisory mechanisms for the system, as well as program development and data bases.

  18. American Disabilities Act

    Broader source: Energy.gov [DOE]

    The Americans with Disabilities Act prohibits private employers, state and local governments, employment agencies and labor unions from discriminating against qualified individuals with disabilities in job application procedures, hiring, firing, advancement, compensation, job training, and other terms, conditions, and privileges of employment.

  19. Raw Encounters: Chinese Managers, African Workers and the Politics of Casualization in Africa’s Chinese Enclaves

    E-Print Network [OSTI]

    Lee, Ching Kwan

    2009-01-01

    WP 2009-14 Raw Encounters: Chinese Managers, African WorkersCasualization in Africa’s Chinese Enclaves by Ching Kwan Leeapproval. Raw Encounters: Chinese Managers, African Workers

  20. Strings, higher curvature corrections, and black holes

    E-Print Network [OSTI]

    Thomas Mohaupt

    2005-12-05

    We review old and recent results on subleading contributions to black hole entropy in string theory.

  1. Physics: the big black box Mirror conjecture

    E-Print Network [OSTI]

    Cavalieri, Renzo

    Physics: the big black box Math Mirror conjecture A look into the mirror (I) an overview of Mirror Symmetry #12;Physics: the big black box Math Mirror conjecture Outline 1 Physics: the big black box 2 Math Symmetry #12;Physics: the big black box Math Mirror conjecture A slogan Mirror Symmetry is a correspondence

  2. The African honey bee: Factors contributing to a successful biological invasion

    E-Print Network [OSTI]

    Scott Schneider, Stanley; DeGrandi-Hoffman, Gloria; Smith, Deborah R.

    2004-01-01

    The African honey bee subspecies Apis mellifera scutellata has colonized much of the Americas in less than 50 years and has largely replaced European bees throughout its range in the New World. The African bee therefore provides an excellent...

  3. Black hole horizons Eric Gourgoulhon

    E-Print Network [OSTI]

    Gourgoulhon, Eric

    on a black hole: up to 42% of the mass-energy mc2 of accreted matter ! NB: thermonuclear reactions release: a very deep gravitational potential well Release of potential gravitational energy by accretion

  4. Thermodynamics of regular black hole

    E-Print Network [OSTI]

    Yun Soo Myung; Yong-Wan Kim; Young-Jai Park

    2008-09-21

    We investigate thermodynamics for a magnetically charged regular black hole (MCRBH), which comes from the action of general relativity and nonlinear electromagnetics, comparing with the Reissner-Norstr\\"om (RN) black hole in both four and two dimensions after dimensional reduction. We find that there is no thermodynamic difference between the regular and RN black holes for a fixed charge $Q$ in both dimensions. This means that the condition for either singularity or regularity at the origin of coordinate does not affect the thermodynamics of black hole. Furthermore, we describe the near-horizon AdS$_2$ thermodynamics of the MCRBH with the connection of the Jackiw-Teitelboim theory. We also identify the near-horizon entropy as the statistical entropy by using the AdS$_2$/CFT$_1$ correspondence.

  5. Black Holes and Nuclear Dynamics

    E-Print Network [OSTI]

    David Merritt

    2006-02-17

    Supermassive black holes inhabit galactic nuclei, and their presence influences in crucial ways the evolution of the stellar distribution. The low-density cores observed in bright galaxies are probably a result of black hole infall, while steep density cusps like those at the Galactic center are a result of energy exchange between stars moving in the gravitational field of the single black hole. Loss-cone dynamics are substantially more complex in galactic nuclei than in collisionally-relaxed systems like globular clusters due to the wider variety of possible geometries and orbital populations. The rate of star-black hole interactions has begun to be constrained through observations of energetic events associated with stellar tidal disruptions.

  6. Holocene climate instability during the termination of the African Humid Period

    E-Print Network [OSTI]

    Renssen, Hans

    Holocene climate instability during the termination of the African Humid Period H. Renssen January 2003; published 25 February 2003. [1] The termination of the Holocene African Humid Period ($9. Goosse, Holocene climate instability during the termination of the African Humid Period, Geophys. Res

  7. AMERICAN STATISTICAL ASSOCIATION (ASA)

    U.S. Energy Information Administration (EIA) 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| Open Energy Informationmonthly gasoline price to fall toUranium Marketing Annual ReportAMERICAN STATISTICAL

  8. The American Recovery

    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 RankADVANCEDInstallers/ContractorsPhotovoltaics »TanklessResearchEnergy2 DOE Hydrogen12TheAmerican

  9. Fishing in Black Holes

    E-Print Network [OSTI]

    A. Brotas

    2006-09-01

    The coordinate system $(\\bar{x},\\bar{t})$ defined by $r = 2m + K\\bar{x}- c K \\bar{t}$ and $t=\\bar{x}/cK - 1 /cK \\int_{r_a}^r (1- 2m/r + K^2)^{1/2} (1 - 2m/r)^{-1}dr$ allow us to write the Schwarzschild metric in the form: \\[ds^2=c^2 d\\bar{t}^2 + (W^2/K^2 - 2W/K) d\\bar{x}^2 + 2c (1 + W/K) d\\bar{x}d\\bar{t} - r^2 (d\\theta^2 + cos^2\\theta d\\phi^2)\\] with $W=(1 - 2m/r + K^2)^{1/2}$, in which the coefficients' pathologies are moved to $r_K = 2m/(1+K^2)$. This new coordinate system is used to study the entrance into a black hole of a rigid line (a line in which the shock waves propagate with velocity c).

  10. New American Home 2009 (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2008-12-01

    This brochure details the New American Home 2009, which demonstrates the use of innovative building materials, cutting-edge design, and the latest construction techniques.

  11. Opportunities and Inaudibilities: Asian American Internet Musicians

    E-Print Network [OSTI]

    Regullano, Eileen

    2015-01-01

    60–73. Spooner, Tom. “Asian-Americans and the Internet. ”Pew Research Center’s Internet & American Life Project.americans-and-the-internet/. Timothy DeLaGhetto Dog Joke. ,

  12. Modelling the South African fresh fruit export supply chain

    E-Print Network [OSTI]

    van Vuuren, Jan H.

    Modelling the South African fresh fruit export supply chain Frank Gerald Ortmann Thesis presented university for a degree. Signature: Date: #12;#12;Abstract The process of modelling the fruit export, numerous aspects of the export process are considered in this thesis so as to be able to perform

  13. Modelling the South African fresh fruit export supply chain

    E-Print Network [OSTI]

    van Vuuren, Jan H.

    Modelling the South African fresh fruit export supply chain Frank Gerald Ortmann Thesis presented export infrastructure capacity of South Africa formed part of a larger project called the ``Fruit industry into perspective, numerous aspects of the export process are considered in this thesis so

  14. Two new Phytophthora species from South African Eucalyptus plantations

    E-Print Network [OSTI]

    Two new Phytophthora species from South African Eucalyptus plantations Bongani MASEKOa, *, Treena I the cause of collar and root rot disease outbreaks of cold tolerant Eucalyptus species in South Africa and has a slower growth rate in culture. Both P. frigida and P. alti- cola are pathogenic to Eucalyptus

  15. Responses of African economies to the international economic shocks: an

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    -Var. Abstract The objective of this paper is first to verify the assumption of decoupling or no decoupling African economic conjunctures and international economic shocks. Our study has tested this assumption rate shocks and five to World price of oil shocks. Furthermore, we investigate the viability

  16. Surviving racism: African Nova Scotian women talk about the daily

    E-Print Network [OSTI]

    Brownstone, Rob

    Surviving racism: African Nova Scotian women talk about the daily racism they've experienced a discussion Wednesday as part of Dalhousie's Global Health Rounds. Titled "Surviving Racism and its Impact Scotia #12;does not still have a history of racism and I can assure you that that history is strong

  17. A Management Model of the Northwest African Cephalopod Fishery

    E-Print Network [OSTI]

    A Management Model of the Northwest African Cephalopod Fishery W. E. GRANT, W. L. GRIFFIN, and J. P MAURITANIA Nouakchott SENEGAL t::;--~--+-GA M BIA oCanary Islands t? ",(/ and Fisheries Sciences and W. L. Griffin and J. P. Warren are with the Department of Agricul- tural Economics

  18. "The College's African Studies Program has given me the

    E-Print Network [OSTI]

    Kunkle, Tom

    of African geography, culture and socio-political history, both here and in Africa. After completing my you envision Africa, what comes to mind? Exotic wildlife? Diverse cultures? Lush resources? What about take classes that survey the diverse cultures and politics of this continent, as well as its geography

  19. Lienert named American Welding Society Fellow

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

    Lienert named American Welding Society Fellow November 29, 2012 Thomas J. Lienert of the Lab's Metallurgy group was inducted into the American Welding Society's 2012 Class of...

  20. Weatherization Formula Grants - American Recovery and Reinvestment...

    Energy Savers [EERE]

    Weatherization Formula Grants - American Recovery and Reinvestment Act (ARRA) Weatherization Formula Grants - American Recovery and Reinvestment Act (ARRA) U.S. Department of...

  1. NORTH AMERICAN ELECTRIC RELIABILITY COUNCIL: Preliminary Disturbance...

    Energy Savers [EERE]

    Report More Documents & Publications North American Electric Reliability Council Power Outage Update North American Electric Reliability Council Outage Announcement Electric System...

  2. Energy Innovation: Green Button Initiative Empowering Americans...

    Energy Savers [EERE]

    Energy Innovation: Green Button Initiative Empowering Americans to Save Energy and Money Energy Innovation: Green Button Initiative Empowering Americans to Save Energy and Money...

  3. Chinese and Chinese American Life-Writing

    E-Print Network [OSTI]

    Cheung, KK

    2015-01-01

    The Chinaman Pacific: Must a Chinese American Critic ChooseAn Anthology of Ancient Chinese Poetry (??????) (Shanghai,The Woman Warrior and the Chinese-American Autobiographical

  4. American Gas Association | Department of Energy

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

    American Gas Association American Gas Association Memorandum Summarizing Ex Parte Communication 111011ExParte.pdf More Documents & Publications Ex Parte Memorandum - Natural...

  5. Native American Finance Officers Association Conference | Department...

    Office of Environmental Management (EM)

    Native American Finance Officers Association Conference Native American Finance Officers Association Conference March 5, 2012 - 5:50pm Addthis This event will take place on March...

  6. Black hole mimickers: Regular versus singular behavior

    SciTech Connect (OSTI)

    Lemos, Jose P. S.; Zaslavskii, Oleg B.

    2008-07-15

    Black hole mimickers are possible alternatives to black holes; they would look observationally almost like black holes but would have no horizon. The properties in the near-horizon region where gravity is strong can be quite different for both types of objects, but at infinity it could be difficult to discern black holes from their mimickers. To disentangle this possible confusion, we examine the near-horizon properties, and their connection with far away asymptotic properties, of some candidates to black mimickers. We study spherically symmetric uncharged or charged but nonextremal objects, as well as spherically symmetric charged extremal objects. Within the uncharged or charged but nonextremal black hole mimickers, we study nonextremal {epsilon}-wormholes on the threshold of the formation of an event horizon, of which a subclass are called black foils, and gravastars. Within the charged extremal black hole mimickers we study extremal {epsilon}-wormholes on the threshold of the formation of an event horizon, quasi-black holes, and wormholes on the basis of quasi-black holes from Bonnor stars. We elucidate whether or not the objects belonging to these two classes remain regular in the near-horizon limit. The requirement of full regularity, i.e., finite curvature and absence of naked behavior, up to an arbitrary neighborhood of the gravitational radius of the object enables one to rule out potential mimickers in most of the cases. A list ranking the best black hole mimickers up to the worst, both nonextremal and extremal, is as follows: wormholes on the basis of extremal black holes or on the basis of quasi-black holes, quasi-black holes, wormholes on the basis of nonextremal black holes (black foils), and gravastars. Since in observational astrophysics it is difficult to find extremal configurations (the best mimickers in the ranking), whereas nonextremal configurations are really bad mimickers, the task of distinguishing black holes from their mimickers seems to be less difficult than one could think of it.

  7. International black tea market integration and price discovery 

    E-Print Network [OSTI]

    Dharmasena, Kalu Arachchillage Senarath Dhananjaya Bandara

    2004-09-30

    In this thesis we study three basic issues related to international black tea markets: Are black tea markets integrated? Where is the price of black tea discovered? Are there leaders and followers in black tea markets? We ...

  8. Energy on black hole spacetimes

    E-Print Network [OSTI]

    Alejandro Corichi

    2012-07-18

    We consider the issue of defining energy for test particles on a background black hole spacetime. We revisit the different notions of energy as defined by different observers. The existence of a time-like isometry allows for the notion of a total conserved energy to be well defined, and subsequently the notion of a gravitational potential energy is also meaningful. We then consider the situation in which the test particle is adsorbed by the black hole, and analyze the energetics in detail. In particular, we show that the notion of horizon energy es defined by the isolated horizons formalism provides a satisfactory notion of energy compatible with the particle's conserved energy. As another example, we comment a recent proposal to define energy of the black hole as seen by an observer at rest. This account is intended to be pedagogical and is aimed at the level of and as a complement to the standard textbooks on the subject.

  9. Heat Engine of black holes

    E-Print Network [OSTI]

    J. Sadeghi; Kh. Jafarzade

    2015-06-23

    As we know, the cosmological constant in different theories of gravity acts as a thermodynamics variable. The cosmological constant exists in different actions of gravity and also appears in the solution of such theories. These lead to use the black hole as a heat engines. Also, there are two values for the cosmological constant as positive and negative values. The case of negative cosmological constant supplies a natural realization of these engines in terms of the field theory description of the fluids to which they are holographically dual. In this paper, we are going to define heat engines for two different black holes as Dyonic BH and Kerr BH. And also, we calculate maximum efficiency for two black holes.

  10. Charged rotating dilaton black strings

    SciTech Connect (OSTI)

    Dehghani, M.H.; Farhangkhah, N.

    2005-02-15

    In this paper we, first, present a class of charged rotating solutions in four-dimensional Einstein-Maxwell-dilaton gravity with zero and Liouville-type potentials. We find that these solutions can present a black hole/string with two regular horizons, an extreme black hole or a naked singularity provided the parameters of the solutions are chosen suitable. We also compute the conserved and thermodynamic quantities, and show that they satisfy the first law of thermodynamics. Second, we obtain the (n+1)-dimensional rotating solutions in Einstein-dilaton gravity with Liouville-type potential. We find that these solutions can present black branes, naked singularities or spacetimes with cosmological horizon if one chooses the parameters of the solutions correctly. Again, we find that the thermodynamic quantities of these solutions satisfy the first law of thermodynamics.

  11. Quantum Criticality and Black Holes

    ScienceCinema (OSTI)

    Sachdev, Subir [Harvard University, Cambridge, Massachusetts, United States

    2009-09-01

    I will describe the behavior of a variety of condensed matter systems in the vicinity of zero temperature quantum phase transitions. There is a remarkable analogy between the hydrodynamics of such systems and the quantum theory of black holes. I will show how insights from this analogy have shed light on recent experiments on the cuprate high temperature superconductors. Studies of new materials and trapped ultracold atoms are yielding new quantum phases, with novel forms of quantum entanglement. Some materials are of technological importance: e.g. high temperature superconductors. Exact solutions via black hole mapping have yielded first exact results for transport coefficients in interacting many-body systems, and were valuable in determining general structure of hydrodynamics. Theory of VBS order and Nernst effect in cuprates. Tabletop 'laboratories for the entire universe': quantum mechanics of black holes, quark-gluon plasma, neutrons stars, and big-bang physics.

  12. Central American update

    SciTech Connect (OSTI)

    Hodgson, S.F.

    1987-07-01

    The Central American Energy Resources Project is designed to help the countries of Honduras, Costa Rica, El Salvador, Guatemala, and Panama develop their geothermal resources. Auxiliary project goals are to increase economic development and employment in Central America; to provide a scientific basis for the private sector to develop natural resources; and to provide scientific training to in-country scientists, engineers, and technicians. The energy resources project began in March 1985. The progress being made in El Salvador (production well logging and geophysical operations), Panama (site selection for the first temperature-gradient well), and Honduras (well drilling of temperature-gradient wells) is summarized.

  13. Central American resource studies

    SciTech Connect (OSTI)

    Van Eeckhout, E.; Laughlin, A.W.

    1989-01-01

    Los Alamos National Laboratory has been working with five Central American countries to assist in the development of their energy and mineral resources. Since 1985, mineral resources in Costa Rica, peat resources in Costa Rica and Panama, geothermal energy resources in Honduras and Guatemala, and geothermal field development in El Salvador and Costa Rica have been topics of study. This paper presents an overview of this work -- within these proceedings are papers that deal with specific aspects of each topic, and these will be duly noted. 15 refs., 4 figs.

  14. American Chemical Society Fellow

    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 OutreachProductswsicloudwsiclouddenDVA N C E D B L O O D S TAPropane TexasAmbipolarXunamed as American

  15. Black Holes and Galaxy Dynamics

    E-Print Network [OSTI]

    David Merritt

    1999-06-02

    The consequences of nuclear black holes for the structure and dynamics of stellar spheroids are reviewed. Slow growth of a black hole in a pre-existing core produces a steep power-law density profile similar to the cusps seen in faint elliptical galaxies. The weaker cusps in bright ellipticals may result from ejection of stars by a coalescing black-hole binary; there is marginal kinematical evidence for such a process having occurred in M87. Stellar orbits in a triaxial nucleus are mostly regular at radii where the gravitational force is dominated by the black hole; however the orbital shapes are not conducive to reinforcing the triaxial figure, hence nuclei are likely to be approximately axisymmetric. In triaxial potentials, a ``zone of chaos'' extends outward to a radius where the enclosed stellar mass is roughly 100 times the mass of the black hole; in this chaotic zone, no regular, box-like orbits exist. At larger radii, the phase space in triaxial potentials is complex, consisting of stochastic orbits as well as regular orbits associated with stable resonances. Figure rotation tends to increase the degree of stochasticity. Both test-particle integrations and N-body simulations suggest that a triaxial galaxy responds globally to the presence of a central mass concentration by evolving toward more axisymmetric shapes; the evolution occurs rapidly when the mass of the central object exceeds roughly 2% of the mass in stars. The lack of significant triaxiality in most early-type galaxies may be a consequence of orbital evolution induced by nuclear black holes.

  16. Radiation transport around Kerr black holes

    E-Print Network [OSTI]

    Schnittman, Jeremy David

    2005-01-01

    This Thesis describes the basic framework of a relativistic ray-tracing code for analyzing accretion processes around Kerr black holes. We begin in Chapter 1 with a brief historical summary of the major advances in black ...

  17. Does phantom energy produce black hole?

    E-Print Network [OSTI]

    F. Rahaman; A. Ghosh; M. Kalam

    2006-12-23

    We have found an exact solution of spherically symmetrical Einstein equations describing a black hole with a special type phantom energy source. It is surprising to note that our solution is analogous to Reissner-Nordstr\\"{o}m black hole.

  18. Introduction to Black Hole Evaporation

    E-Print Network [OSTI]

    Pierre-Henry Lambert

    2014-01-16

    These lecture notes are an elementary and pedagogical introduction to the black hole evaporation, based on a lecture given by the author at the Ninth Modave Summer School in Mathematical Physics and are intended for PhD students. First, quantum field theory in curved spacetime is studied and tools needed for the remaining of the course are introduced. Then, quantum field theory in Rindler spacetime in 1+1 dimensions and in the spacetime of a spherically collapsing star are considered, leading to Unruh and Hawking effects, respectively. Finally, some consequences such as thermodynamics of black holes and information loss paradox are discussed.

  19. 4d neutral dilatonic black holes and (4+p) dimensional nondilatonic black p-branes

    E-Print Network [OSTI]

    J. R. Morris

    2000-01-11

    It is shown that, in contrast to the case of extreme 4d dilatonic black holes, 4d neutral dilatonic black holes with horizon singularities can not be interpreted as nonsingular nondilatonic black p-branes in (4+p) dimensions, regardless of the number of extra dimensions p. That is, extra dimensions do not remove naked singularities of 4d neutral dilatonic black holes.

  20. Classical and thermodynamic stability of black holes

    E-Print Network [OSTI]

    Ricardo Monteiro

    2010-06-28

    We consider the stability of black holes within both classical general relativity and the semiclassical thermodynamic description. In particular, we study linearised perturbations and their contribution to the gravitational partition function, addressing technical issues for charged (Reissner-Nordstrom) and rotating (Kerr-AdS) black holes. Exploring the connection between classical and thermodynamic stability, we find classical instabilities of Myers-Perry black holes and bifurcations to new black hole families.

  1. Will black holes eventually engulf the universe?

    E-Print Network [OSTI]

    Prado Martin-Moruno; Jose A. Jimenez Madrid; Pedro F. Gonzalez-Diaz

    2006-03-28

    The Babichev-Dokuchaev-Eroshenko model for the accretion of dark energy onto black holes has been extended to deal with black holes with non-static metrics. The possibility that for an asymptotic observer a black hole with large mass will rapidly increase and eventually engulf the Universe at a finite time in the future has been studied by using reasonable values for astronomical parameters. It is concluded that such a phenomenon is forbidden for all black holes in quintessential cosmological models.

  2. Hawking Emission and Black Hole Thermodynamics

    E-Print Network [OSTI]

    Don N. Page

    2006-12-18

    A brief review of Hawking radiation and black hole thermodynamics is given, based largely upon hep-th/0409024.

  3. Scattering by regular black holes: Planar massless scalar waves impinging upon a Bardeen black hole

    E-Print Network [OSTI]

    Macedo, Caio F B; Crispino, Luís C B

    2015-01-01

    Singularities are common features of general relativity black holes. However, within general relativity, one can construct black holes that present no singularities. These regular black hole solutions can be achieved by, for instance, relaxing one of the energy conditions on the stress energy tensor sourcing the black hole. Some regular black hole solutions were found in the context of non-linear electrodynamics, the Bardeen black hole being the first one proposed. In this paper, we consider a planar massless scalar wave scattered by a Bardeen black hole. We compare the scattering cross section computed using a partial-wave description with the classical geodesic scattering of a stream of null geodesics, as well as with the semi-classical glory approximation. We obtain that, for some values of the corresponding black hole charge, the scattering cross section of a Bardeen black hole has a similar interference pattern of a Reissner-Nordstr\\"om black hole.

  4. Scattering by regular black holes: Planar massless scalar waves impinging upon a Bardeen black hole

    E-Print Network [OSTI]

    Caio F. B. Macedo; Ednilton S. de Oliveira; Luís C. B. Crispino

    2015-06-26

    Singularities are common features of general relativity black holes. However, within general relativity, one can construct black holes that present no singularities. These regular black hole solutions can be achieved by, for instance, relaxing one of the energy conditions on the stress energy tensor sourcing the black hole. Some regular black hole solutions were found in the context of non-linear electrodynamics, the Bardeen black hole being the first one proposed. In this paper, we consider a planar massless scalar wave scattered by a Bardeen black hole. We compare the scattering cross section computed using a partial-wave description with the classical geodesic scattering of a stream of null geodesics, as well as with the semi-classical glory approximation. We obtain that, for some values of the corresponding black hole charge, the scattering cross section of a Bardeen black hole has a similar interference pattern of a Reissner-Nordstr\\"om black hole.

  5. New approaches to black holes Eric Gourgoulhon

    E-Print Network [OSTI]

    Gourgoulhon, Eric

    References Eric Gourgoulhon (LUTH) New approaches to black holes Okinawa Nat. Col. Tech., 17 Aug 2008 2 / 36 Gourgoulhon (LUTH) New approaches to black holes Okinawa Nat. Col. Tech., 17 Aug 2008 3 / 36 #12;Local (2006)] Eric Gourgoulhon (LUTH) New approaches to black holes Okinawa Nat. Col. Tech., 17 Aug 2008 4

  6. Thinking American, Working American, Playing American Folk Dance in Chicago, 1890-1940 

    E-Print Network [OSTI]

    Herzogenrath, Jessica

    2014-07-23

    for the consideration of folk dance as an integral part of the physical education of children and young women as well as its function as an element of defining American-ness in both higher education and social settlements. Second, the dissertation demonstrates...

  7. From Pinholes to Black Holes

    SciTech Connect (OSTI)

    Fenimore, Edward E.

    2014-10-06

    Pinhole photography has made major contributions to astrophysics through the use of “coded apertures”. Coded apertures were instrumental in locating gamma-ray bursts and proving that they originate in faraway galaxies, some from the birth of black holes from the first stars that formed just after the big bang.

  8. Extremal Higher Spin Black Holes

    E-Print Network [OSTI]

    Máximo Bañados; Alejandra Castro; Alberto Faraggi; Juan I. Jottar

    2015-11-30

    The gauge sector of three-dimensional higher spin gravities can be formulated as a Chern-Simons theory. In this context, a higher spin black hole corresponds to a flat connection with suitable holonomy (smoothness) conditions which are consistent with the properties of a generalized thermal ensemble. Building on these ideas, we discuss a definition of black hole extremality which is appropriate to the topological character of 3d higher spin theories. Our definition can be phrased in terms of the Jordan class of the holonomy around a non-contractible (angular) cycle, and we show that it is compatible with the zero-temperature limit of smooth black hole solutions. While this notion of extremality does not require nor implies the existence of supersymmetry, we exemplify its consequences in the context of sl(3|2) + sl(3|2) Chern-Simons theory. Remarkably, while as usual not all extremal solutions preserve supersymmetries, we find that the higher spin setup allows for non-extremal supersymmetric black hole solutions as well. Furthermore, we discuss our results from the perspective of the holographic duality between sl(3|2) + sl(3|2) Chern-Simons theory and two-dimensional CFTs with W_{(3|2)} symmetry, the simplest higher spin extension of the N=2 super-Virasoro algebra. In particular, we compute W_{(3|2)} BPS bounds at the full quantum level, and relate their semiclassical limit to extremal black hole or conical defect solutions in the 3d bulk. Along the way, we discuss the role of the spectral flow automorphism and provide a conjecture for the form of the semiclassical BPS bounds in general N=2 two-dimensional CFTs with extended symmetry algebras.

  9. Black hole microstates in AdS

    E-Print Network [OSTI]

    Shaghoulian, Edgar

    2015-01-01

    We extend a recently derived higher-dimensional Cardy formula to include angular momenta, which we use to obtain the Bekensten-Hawking entropy of AdS black branes, compactified rotating branes, and large Schwarzschild/Kerr black holes. This is the natural generalization of Strominger's microscopic derivation of the BTZ black hole entropy to higher dimensions. We propose an extension to include $U(1)$ charge, which agrees with the Bekenstein-Hawking entropy of large Reissner-Nordstrom/Kerr-Newman black holes at high temperature. We extend the results to arbitrary hyperscaling violation exponent (this captures the case of black D$p$-branes as a subclass) and reproduce logarithmic corrections.

  10. The Bases Are Loaded: American Indians and American Studies

    E-Print Network [OSTI]

    Meland, Carter; Bauerkemper, Joseph; Howe, LeAnne; Stark, Heidi

    2006-03-01

    with the perspectives of American Indian studies. In general, as Nikhil Pal Singh notes, current cultural discourse "counterposes multiculturalism and universalism as principal, opposed terms in the culture wars."6 Singh elaborates that this oppo sition "determines... with the perspectives of American Indian studies. In general, as Nikhil Pal Singh notes, current cultural discourse "counterposes multiculturalism and universalism as principal, opposed terms in the culture wars."6 Singh elaborates that this oppo sition "determines...

  11. American Indian Policy and Relevant DOE and Executive Orders...

    Office of Environmental Management (EM)

    Tribal Programs American Indian Policy and Relevant DOE and Executive Orders American Indian Policy and Relevant DOE and Executive Orders Over the course of American history,...

  12. Geothermal energy for American Samoa

    SciTech Connect (OSTI)

    Not Available

    1980-03-01

    The geothermal commercialization potential in American Samoa was investigated. With geothermal energy harnessed in American Samoa, a myriad of possibilities would arise. Existing residential and business consumers would benefit from reduced electricity costs. The tuna canneries, demanding about 76% of the island's process heat requirements, may be able to use process heat from a geothermal source. Potential new industries include health spas, aquaculture, wood products, large domestic and transhipment refrigerated warehouses, electric cars, ocean nodule processing, and a hydrogen economy. There are no territorial statutory laws of American Samoa claiming or reserving any special rights (including mineral rights) to the territorial government, or other interests adverse to a land owner, for subsurface content of real property. Technically, an investigation has revealed that American Samoa does possess a geological environment conducive to geothermal energy development. Further studies and test holes are warranted.

  13. Idaho_AmericanFallsRockland

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

    Wind Power - Idaho Wind Anemometer Loan Program American FallsRockland Site 106 Latitude: N. 42 deg. 40.682' Longitude: W. 112 deg. 46.325' Elevation: 6579' Anemometer Height: 20...

  14. The New American Home 2011

    SciTech Connect (OSTI)

    2010-12-01

    The New American Home® is built annually as a showcase home for the International Builders’ Show® to demonstrate innovative technologies, construction techniques, products, and design trends for the homebuilding industry to use in any new or remodeled home.

  15. Excerpt from Dead Stars: American and Philippine Literary Perspectives on the American Colonization of the Philippines

    E-Print Network [OSTI]

    McMahon, Jennifer M.

    2011-01-01

    Dead Stars: American and Philippine Literary Perspectives onthe American Colonization of the Philippines (Quezon City:University of the Philippines Press, 2011). Published with

  16. Black Hole Thermodynamics and Electromagnetism

    E-Print Network [OSTI]

    Burra G. Sidharth

    2005-07-15

    We show a strong parallel between the Hawking, Beckenstein black hole Thermodynamics and electromagnetism: When the gravitational coupling constant transform into the electromagnetic coupling constant, the Schwarzchild radius, the Beckenstein temperature, the Beckenstein decay time and the Planck mass transform to respectively the Compton wavelength, the Hagedorn temperature, the Compton time and a typical elementary particle mass. The reasons underlying this parallalism are then discussed in detail.

  17. Quantum chaos inside Black Holes

    E-Print Network [OSTI]

    Addazi, Andrea

    2015-01-01

    We show how semiclassical black holes can be reinterpreted as an effective geometry, composed of a large ensamble of horizonless naked singularities (eventually smoothed at the Planck scale). We call this new items {\\it frizzyballs}, which can be rigorously defined by euclidean path integral approach. This has interesting implications regarding information paradoxes. We demonstrate that infalling information will chaotically propagate inside this system before going to the full quantum gravity regime (Planck scale).

  18. Quantum chaos inside Black Holes

    E-Print Network [OSTI]

    Andrea Addazi

    2015-08-30

    We show how semiclassical black holes can be reinterpreted as an effective geometry, composed of a large ensamble of horizonless naked singularities (eventually smoothed at the Planck scale). We call this new items {\\it frizzyballs}, which can be rigorously defined by euclidean path integral approach. This has interesting implications regarding information paradoxes. We demonstrate that infalling information will chaotically propagate inside this system before going to the full quantum gravity regime (Planck scale).

  19. Classical Black Holes Are Hot

    E-Print Network [OSTI]

    Erik Curiel

    2014-11-09

    In the early 1970s it is was realized that there is a striking formal analogy between the Laws of black-hole mechanics and the Laws of classical thermodynamics. Before the discovery of Hawking radiation, however, it was generally thought that the analogy was only formal, and did not reflect a deep connection between gravitational and thermodynamical phenomena. It is still commonly held that the surface gravity of a stationary black hole can be construed as a true physical temperature and its area as a true entropy only when quantum effects are taken into account; in the context of classical general relativity alone, one cannot cogently construe them so. Does the use of quantum field theory in curved spacetime offer the only hope for taking the analogy seriously? I think the answer is `no'. To attempt to justify that answer, I shall begin by arguing that the standard argument to the contrary is not physically well founded, and in any event begs the question. Looking at the various ways that the ideas of "temperature" and "entropy" enter classical thermodynamics then will suggest arguments that, I claim, show the analogy between classical black-hole mechanics and classical thermodynamics should be taken more seriously, without the need to rely on or invoke quantum mechanics. In particular, I construct an analogue of a Carnot cycle in which a black hole "couples" with an ordinary thermodynamical system in such a way that its surface gravity plays the role of temperature and its area that of entropy. Thus, the connection between classical general relativity and classical thermodynamics on their own is already deep and physically significant, independent of quantum mechanics.

  20. Relationship of Black Holes to Bulges

    E-Print Network [OSTI]

    David Merritt; Laura Ferrarese

    2001-07-08

    Supermassive black holes appear to be uniquely associated with galactic bulges. The mean ratio of black hole mass to bulge mass was until recently very uncertain, with ground based, stellar kinematical data giving a value roughly an order of magnitude larger than other techniques. The discrepancy was resolved with the discovery of the M-sigma relation, which simultaneously established a tight corrrelation between black hole mass and bulge velocity dispersion, and confirmed that the stellar kinematical mass estimates were systematically too large due to failure to resolve the black hole's sphere of influence. There is now excellent agreement between the various techniques for estimating the mean black hole mass, including dynamical mass estimation in quiescent galaxies; reverberation mapping in active galaxies and quasars; and computation of the mean density of compact objects based on integrated quasar light. Implications of the M-sigma relation for the formation of black holes are discussed.

  1. Boson shells harboring charged black holes

    SciTech Connect (OSTI)

    Kleihaus, Burkhard; Kunz, Jutta; Laemmerzahl, Claus; List, Meike

    2010-11-15

    We consider boson shells in scalar electrodynamics coupled to Einstein gravity. The interior of the shells can be empty space, or harbor a black hole or a naked singularity. We analyze the properties of these types of solutions and determine their domains of existence. We investigate the energy conditions and present mass formulae for the composite black hole-boson shell systems. We demonstrate that these types of solutions violate black hole uniqueness.

  2. Fuel Cell Manufacturing: American Energy and Manufacturing Competitive...

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

    Fuel Cell Manufacturing: American Energy and Manufacturing Competitiveness Summit Fuel Cell Manufacturing: American Energy and Manufacturing Competitiveness Summit Presentation on...

  3. Thermodynamic fluctuation in black string flow

    E-Print Network [OSTI]

    Meng Sun; Yong-Chang Huna

    2015-06-14

    It has long been noticed that Laudau-Lifshitz theory can be used to study the fluctuation of a system that contains a black hole. Since the black string can be constructed by extending n-dimensional black hole into one extra dimension. We study the fluctuation of black string flow with a Schwarzschlid-like metric in D=n+1 dimensional spacetime and a charged solution in D=5 dimensional spacetime and get the second moments of the fluctuation of the mass flux and charge flux.

  4. Thermodynamic fluctuation in black string flow

    E-Print Network [OSTI]

    Meng Sun; Yong-Chang Huang

    2015-05-11

    It has long been noticed that Laudau-Lifshitz theory can be used to study the fluctuation of a system that contains a black hole. Since the black string can be constructed by extending n-dimensional black hole into one extra dimension. We study the fluctuation of black string flow with a Schwarzschlid-like metric in D=n+1 dimensional spacetime and a charged solution in D=5 dimensional spacetime and get the second moments of the fluctuation of the mass flux and charge flux.

  5. Black carbon contribution to global warming

    SciTech Connect (OSTI)

    Chylek, P.; Johnson, B.; Kou, L.; Wong, J.

    1996-12-31

    Before the onset of industrial revolution the only important source of black carbon in the atmosphere was biomass burning. Today, black carbon production is divided between the biomass and fossil fuel burning. Black carbon is a major agent responsible for absorption of solar radiation by atmospheric aerosols. Thus black carbon makes other aerosols less efficient in their role of reflecting solar radiation and cooling the earth-atmosphere system. Black carbon also contributes to the absorption of solar radiation by clouds and snow cover. The authors present the results of black carbon concentrations measurements in the atmosphere, in cloud water, in rain and snow melt water collected during the 1992--1996 time period over the southern Nova Scotia. Their results are put into the global and historical perspective by comparing them with the compilation of past measurements at diverse locations and with their measurements of black carbon concentrations in the Greenland and Antarctic ice cores. Black carbon contribution to the global warming is estimated, and compared to the carbon dioxide warming, using the radiative forcing caused by the black carbon at the top of the atmosphere.

  6. Lower Dimensional Black Holes: Inside and Out

    E-Print Network [OSTI]

    R. B. Mann

    1995-01-27

    I survey the physics of black holes in two and three spacetime dimensions, with special attention given to an understanding of their exterior and interior properties.

  7. Black Holes: from Speculations to Observations

    E-Print Network [OSTI]

    Thomas W. Baumgarte

    2006-04-13

    This paper provides a brief review of the history of our understanding and knowledge of black holes. Starting with early speculations on ``dark stars'' I discuss the Schwarzschild "black hole" solution to Einstein's field equations and the development of its interpretation from "physically meaningless" to describing the perhaps most exotic and yet "most perfect" macroscopic object in the universe. I describe different astrophysical black hole populations and discuss some of their observational evidence. Finally I close by speculating about future observations of black holes with the new generation of gravitational wave detectors.

  8. Rotating Black Holes and Coriolis Effect

    E-Print Network [OSTI]

    Wu, Xiaoning; Yuan, Pei-Hung; Cho, Chia-Jui

    2015-01-01

    In this work, we consider the fluid/gravity correspondence for general rotating black holes. By using the Petrov-like boundary condition in near horizon limit, we study the correspondence between gravitational perturbation and fluid equation. We find that the dual fluid equation for rotating black holes contains a Coriolis force term, which is closely related to the angular velocity of the black hole horizon. This can be seen as a dual effect for the frame-dragging effect of rotating black hole under the holographic picture.

  9. Rotating Black Holes and Coriolis Effect

    E-Print Network [OSTI]

    Xiaoning Wu; Yi Yang; Pei-Hung Yuan; Chia-Jui Cho

    2015-11-27

    In this work, we consider the fluid/gravity correspondence for general rotating black holes. By using the Petrov-like boundary condition in near horizon limit, we study the correspondence between gravitational perturbation and fluid equation. We find that the dual fluid equation for rotating black holes contains a Coriolis force term, which is closely related to the angular velocity of the black hole horizon. This can be seen as a dual effect for the frame-dragging effect of rotating black hole under the holographic picture.

  10. Traffic restrictions associated with the Sino-African summit: Reductions of NOx detected from space

    E-Print Network [OSTI]

    Boersma, Folkert

    Traffic restrictions associated with the Sino-African summit: Reductions of NOx detected from space restrictions associated with the Sino-African summit: Reductions of NOx detected from space, Geophys. Res. Lett show in what follows that a reduction in NOx emissions was in fact observed by the Ozone Monitoring

  11. 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

  12. The Missionary Movement in African and World History: Mission Sources and Religious Encounter

    E-Print Network [OSTI]

    Maxwell, David

    2015-06-03

     reconstructing  social  differentiation  in  African  societies,  particularly  in  revealing  indigenous  African  criticism  of  ‘custom’.       I  The  first  Dixie  Professor  of  Ecclesiastical  History  was...  cultures.11    My  own  research  has  sought  to  expand  the  notion  of  missionary  encounter  in  Africa.      First,  I  have  tended  to  work  on  missionary  movements  within  radical...

  13. Responses of African economies to the international economic shocks: an empirical study.

    E-Print Network [OSTI]

    of this study is first, to verify the assumption of decoupling or no decoupling of African economic conjunctures and international economic shocks. We test this assumption in 15 African countries using a SVAR model for the period capita shocks, six to Federal funds effective rate shocks and five to World price of oil shocks

  14. PUBLISHED ONLINE: 26 JANUARY 2015 | DOI: 10.1038/NGEO2329 The time-transgressive termination of the African

    E-Print Network [OSTI]

    Fay, Noah

    -transgressive termination of the African Humid Period Timothy M. Shanahan1 *, Nicholas P. McKay2 , Konrad A. Hughen3 of the African monsoon. Hydrologic reconstructions from arid North Africa show an abrupt onset and termination of hydrologic reconstructions from across Africa shows that the termination of the African Humid Period

  15. L.A. Rebellion: Creating a New Black Cinema

    E-Print Network [OSTI]

    Sheppard, Samantha Noelle

    2011-01-01

    Creating a New Black Cinema Symposium Review by SamanthaCreating a New Black Cinema By the turn of the next century,in the development of Black cinema took place at UCLA in the

  16. Queering Black Gay Historiography: Performance, (Mis) Identifications, and Possibilities

    E-Print Network [OSTI]

    Fitzgerald, Thomas Howard

    2013-01-01

    In 1976 the black comedy Car Wash featured a black gay manthe a openly black sissy in the Car Wash as a character thatsaw the distribution of Car Wash with Antoino Fargas playing

  17. Information Technology: American National Standard for

    E-Print Network [OSTI]

    Information Technology: American National Standard for Information Systems-- Data Format Publication 500-245 Information Technology: American National Standard for Information Systems-- Data Format for the Interchange of Fingerprint, Facial, & Scar Mark & Tattoo (SMT) Information Sponsored by Information Technology

  18. American Valve: Order (2010-CW-1411)

    Broader source: Energy.gov [DOE]

    DOE ordered American Valve, Inc. to pay a $5,000 civil penalty after finding American Valve had failed to certify that certain showerhead models comply with the applicable water conservation standards.

  19. North American Leaders Summit: Energy Deliverables | Department...

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

    discussions at the North American Leaders Summit, to be held in Guadalajara, Mexico, on August 9-10, 2009. Building on the work of the North American Energy Working...

  20. American Range: Order (2014-CE-23006)

    Broader source: Energy.gov [DOE]

    DOE ordered American Range Corporation to pay a $8,000 civil penalty after finding American Range had failed to certify that certain models of cooking products comply with the applicable energy conservation standards.

  1. Chinese American Faculty Association of Southern California

    E-Print Network [OSTI]

    Chang, Tu-nan

    Chinese American Faculty Association of Southern California CAFA Fall Picnic Date: October 27 picnic. Sincerely, Andy Yao Cindy Fang President, CAFA Vice-President, CAFA #12;Chinese American Faculty

  2. Information Technology: American National Standard for Information

    E-Print Network [OSTI]

    Information Technology: American National Standard for Information Systems-- Data Format 500-275 Information Technology: American National Standard for Information Systems-- Data Format Coleman, and Patrice Yuh, Editors Sponsored by Information Access Division Information Technology

  3. Information Technology: American National Standard for Information

    E-Print Network [OSTI]

    Information Technology: American National Standard for Information Systems-- Data Format-271 Information Technology: American National Standard for Information Systems-- Data Format for the Interchange Sponsored by Information Access Division Information Technology Laboratory National Institute of Standards

  4. Extraordinary vacuum black string solutions

    SciTech Connect (OSTI)

    Kim, Hyeong-Chan; Lee, Jungjai

    2008-01-15

    In addition to the boosted static solution there are two other classes of stationary stringlike solutions of the vacuum Einstein equation in (4+1) dimensions. Each class is characterized by three parameters of mass, tension, and momentum flow along the fifth coordinate. We analyze the metric properties of one of the two classes, which was previously assumed to be naked singular, and show that the solution spectrum contains black string and wormhole in addition to the known naked singularity as the momentum flow to mass ratio increases. Interestingly, there does not exist new zero momentum solution in these cases.

  5. Effective theories and black hole production in warped compactificatio...

    Office of Scientific and Technical Information (OSTI)

    Effective theories and black hole production in warped compactifications Citation Details In-Document Search Title: Effective theories and black hole production in warped...

  6. The early American motion picture industry: promoting American cultural hegemony 

    E-Print Network [OSTI]

    Wier, Theresa Joanne

    1994-01-01

    For the American motion picture industry, a key period in its development was that which followed World War I until the advent of the techonology of sound film. Film occupied a unique position during this period, as both a product and promoter...

  7. An electromagnetic black hole made of metamaterials

    E-Print Network [OSTI]

    Qiang Cheng; Tie Jun Cui; Wei Xiang Jiang; Ben Geng Cai

    2010-04-30

    Traditionally, a black hole is a region of space with huge gravitational field, which absorbs everything hitting it. In history, the black hole was first discussed by Laplace under the Newton mechanics, whose event horizon radius is the same as the Schwarzschild's solution of the Einstein's vacuum field equations. If all those objects having such an event horizon radius but different gravitational fields are called as black holes, then one can simulate certain properties of the black holes using electromagnetic fields and metamaterials due to the similar propagation behaviours of electromagnetic waves in curved space and in inhomogeneous metamaterials. In a recent theoretical work by Narimanov and Kildishev, an optical black hole has been proposed based on metamaterials, in which the theoretical analysis and numerical simulations showed that all electromagnetic waves hitting it are trapped and absorbed. Here we report the first experimental demonstration of such an electromagnetic black hole in the microwave frequencies. The proposed black hole is composed of non-resonant and resonant metamaterial structures, which can trap and absorb electromagnetic waves coming from all directions spirally inwards without any reflections due to the local control of electromagnetic fields and the event horizon corresponding to the device boundary. It is shown that the absorption rate can reach 99% in the microwave frequencies. We expect that the electromagnetic black hole could be used as the thermal emitting source and to harvest the solar light.

  8. Black holes cannot support conformal scalar hair

    E-Print Network [OSTI]

    T. Zannias

    1994-09-14

    It is shown that the only static asymptotically flat non-extrema black hole solution of the Einstein-conformally invariant scalar field equations having the scalar field bounded on the horizon, is the Schwarzschild one. Thus black holes cannot be endowed with conformal scalar hair of finite length.

  9. Quantum Entropy of Charged Rotating Black Holes

    E-Print Network [OSTI]

    R. B. Mann

    1996-07-10

    I discuss a method for obtaining the one-loop quantum corrections to the tree-level entropy for a charged Kerr black hole. Divergences which appear can be removed by renormalization of couplings in the tree-level gravitational action in a manner similar to that for a static black hole.

  10. Topological Black Holes in Quantum Gravity

    E-Print Network [OSTI]

    J. Kowalski-Glikman; D. Nowak-Szczepaniak

    2000-07-31

    We derive the black hole solutions with horizons of non-trivial topology and investigate their properties in the framework of an approach to quantum gravity being an extension of Bohm's formulation of quantum mechanics. The solutions we found tend asymptotically (for large $r$) to topological black holes. We also analyze the thermodynamics of these space-times.

  11. Primordial black holes and asteroid danger

    E-Print Network [OSTI]

    Alexander Shatskiy

    2008-02-21

    Probability for a primordial black hole to invade the Kuiper belt was calculated. We showed that primordial black holes of certain masses can significantly change asteroids' orbits. These events may result in disasters, local for our solar system and global for the Earth (like the Tunguska meteorite). We also estimated how often such events occur.

  12. Stability of AdS black strings

    E-Print Network [OSTI]

    T. Delsate

    2008-08-14

    We review the recent developements in the stability problem and phase diagram for asymptotically locally $AdS$ black strings. First, we quickly review the case of locally flat black string before turning to the case of locally $AdS$ spacetimes.

  13. Canonical structure of 2D black holes

    E-Print Network [OSTI]

    Navarro-Salas, J; Talavera, C F

    1994-01-01

    We determine the canonical structure of two-dimensional black-hole solutions arising in $2D$ dilaton gravity. By choosing the Cauchy surface appropriately we find that the canonically conjugate variable to the black hole mass is given by the difference of local (Schwarzschild) time translations at right and left spatial infinities. This can be regarded as a generalization of Birkhoff's theorem.

  14. Fractal Statistics and Quantum Black Hole Entropy

    E-Print Network [OSTI]

    Wellington da Cruz

    2000-11-18

    Simple considerations about the fractal characteristic of the quantum-mechanical path give us the opportunity to derive the quantum black hole entropy in connection with the concept of fractal statistics. We show the geometrical origin of the numerical factor of four of the quantum black hole entropy expression and the statistics weight appears as a counting of the quanta of geometry.

  15. Can Superconducting Cosmic Strings Piercing Seed Black Holes Generate Supermassive Black Holes in the Early Universe?

    E-Print Network [OSTI]

    Lake, Matthew J

    2015-01-01

    The discovery of a large number of supermassive black holes at redshifts $z> 6$, when the Universe was only nine hundred million years old, has raised the fundamental question of how such massive compact objects could form in a (cosmologically) short time interval. Each of the proposed standard scenarios for black hole formation, involving rapid accretion of seed black holes, or black hole mergers, faces severe theoretical difficulties in explaining the short time formation of supermassive objects. In the present Letter, we propose an alternative scenario for the formation of supermassive black holes in the early Universe in which energy transfer from superconducting cosmic strings, piercing small seed black holes, is the main physical process leading to rapid mass increase. The increase in mass of a primordial seed black hole pierced by two antipodal strings is estimated and it is shown that this increases linearly in time. Due to the high energy transfer rate from the cosmic strings, we find that supermassi...

  16. Class Transitions in Black Holes

    E-Print Network [OSTI]

    Sandip K. Chakrabarti

    2005-01-14

    A black hole spectrum is known to change from the hard state to the soft state when the energy spectral index $\\alpha$ ($F_E \\propto E^{-\\alpha}$) in, say, 2-20 keV range changes from $\\alpha \\sim 0.5$ to $\\sim 1.5$. However, this `classical' definition which characterizes black holes like Cyg X-1, becomes less useful for many objects such as GRS 1915+105 in which the spectral slope is seen to vary from one to the other in a matter of seconds and depending on whether or not winds form, the spectral slope also changes. The light curves and the colour-colour diagrams may look completely different on different days depending on the frequency and mode of switching from one spectral state to the other. Though RXTE observations have yielded wealth of information on such `variability classes' in GRS 1915+105, very rarely one has been able to observe how the object goes from one class to the other. In the present review, we discuss possible origins of the class transition and present several examples of such transitions. In this context, we use mostly the results of the Indian X-ray Astronomy Experiment (IXAE) which observed GRS 1915+105 more regularly.

  17. ENGLISH (Ph.D.) Executive Officer: Professor Mario DiGangi

    E-Print Network [OSTI]

    Artemov, Sergei N.

    , Victorian, African American, American to 1900, Twentieth-Century, Literary Theory, Bibli- ography and Text

  18. Nonthermal correction to black hole spectroscopy

    E-Print Network [OSTI]

    Wen-Yu Wen

    2014-11-14

    Area spectrum of black holes have been obtained via various methods such as quasinormal modes, adiabatic invariance and angular momentum. Among those methods, calculations were done by assuming black holes in thermal equilibrium. Nevertheless, black holes in the asymptotically flat space usually have negative specific heat and therefore tend to stay away from thermal equilibrium. Even for those black holes with positive specific heat, temperature may still not be well defined in the process of radiation, due to the back reaction of decreasing mass. Respect to these facts, it is very likely that Hawking radiation is nonthermal and the area spectrum is no longer equidistant. In this note, we would like to illustrate how the area spectrum of black holes is corrected by this nonthermal effect.

  19. Fourier Analysis of the BTZ Black Hole

    E-Print Network [OSTI]

    Ian M. Tolfree

    2009-11-11

    In this paper we extend our previous work regarding the role of the Fourier transformation in bulk to boundary mappings to include the BTZ black hole. We follow standard procedures for modifying Fourier Transformations to accommodate quotient spaces and arrive at a bulk to boundary mapping in a black hole background. We show that this mapping is consistent with known results and lends a new insight into the AdS/CFT duality. We find that the micro-states corresponding to the entropy of a bulk scalar field are the Fourier coefficients on the boundary, which transform under the principal series representation of $SL(2,R)$. Building upon this we present a toy model to analyze the implications of this for the origin of black hole entropy. We find that the black hole micro-states live on the boundary and correspond to the possible emission modes of the black hole

  20. Evidence for the Black Hole Event Horizon

    E-Print Network [OSTI]

    Ramesh Narayan

    2003-10-23

    Astronomers have discovered many candidate black holes in X-ray binaries and in the nuclei of galaxies. The candidate objects are too massive to be neutron stars, and for this reason they are considered to be black holes. While the evidence based on mass is certainly strong, there is no proof yet that any of the objects possesses the defining characteristic of a black hole, namely an event horizon. Type I X-ray bursts, which are the result of thermonuclear explosions when gas accretes onto the surface of a compact star, may provide important evidence in this regard. Type I bursts are commonly observed in accreting neutron stars, which have surfaces, but have never been seen in accreting black hole candidates. It is argued that the lack of bursts in black hole candidates is compelling evidence that these objects do not have surfaces. The objects must therefore possess event horizons.

  1. How fast can a black hole rotate?

    E-Print Network [OSTI]

    Herdeiro, Carlos A R

    2015-01-01

    Kerr black holes have their angular momentum, $J$, bounded by their mass, $M$: $Jc\\leqslant GM^2$. There are, however, known black hole solutions violating this Kerr bound. We propose a very simple universal bound on the rotation, rather than on the angular momentum, of four-dimensional, stationary and axisymmetric, asymptotically flat black holes, given in terms of an appropriately defined horizon linear velocity, $v_H$. The $v_H$ bound is simply that $v_H$ cannot exceed the velocity of light. We verify the $v_H$ bound for known black hole solutions, including some that violate the Kerr bound, and conjecture that only extremal Kerr black holes saturate the $v_H$ bound.

  2. Interest grows in African oil and gas opportunities

    SciTech Connect (OSTI)

    Knott, D.

    1997-05-12

    As African countries continue a slow drift towards democratic government and market economics, the continent is increasingly attractive to international oil and gas companies. Though Africa remains politically diverse, and its volatile politics remains a major barrier to petroleum companies, a number of recent developments reflect its growing significance for the industry. Among recent projects and events reflecting changes in Africa: oil and gas exporter Algeria has invited foreign oil companies to help develop major gas discoveries, with a view to boosting exports to Europe; oil and gas producer Egypt invited foreign companies to explore in the Nile Delta region, and the result appears to be a flowering world scale gas play; west African offshore exploration has entered deep water and new areas, and a number of major projects are expected in years to come; Nigeria`s reputation as a difficult place to operate has been justified by recent political and civil events, but a long-planned liquefied natural gas (LNG) export plant is being built there; South Africa, which has returned to the international scene after years of trade isolation because of apartheid, is emerging as a potential driver for energy industry schemes throughout the continent. Activities are discussed.

  3. 2012 Fellow American Geophysical Union

    E-Print Network [OSTI]

    Kurapov, Alexander

    ) are critical to the intensity of ocean currents, to long- and short-term climate variations, and the health2012 Fellow American Geophysical Union James Moum, professor in the College of Earth, Ocean contributions to our understanding of ocean mixing in coastal, abyssal and Equatorial regimes using innovative

  4. National Museum of American History

    E-Print Network [OSTI]

    Miller, Scott

    National Museum of American History Strategic Plan 2013--2018 #12;Contents Looking Ahead 2 Mission Funding the Plan 12 Coda 15 A Tagline to Remember 16 Milestones 17 Credits 21 Love History. Use History. Make History. #12;Mission Through incomparable collections, rigorous research, and dynamic public

  5. North American Cross-Border

    E-Print Network [OSTI]

    Consumption in USA and Canada 21 Figure 8: Electricity Export as a Fraction of Domestic Consumption in USANorth American Cross-Border Electricity Trade Ian M. Loomis Virginia Center for Coal and Energy ii List of Tables ii List of Figures 1 EXECUTIVE SUMMARY 2 INTRODUCTION 5 ELECTRICITY GENERATION

  6. The American Medical Association Foundation

    E-Print Network [OSTI]

    ;2 The Odontology Section of the American Academy of Forensic Sciences presented Robert Barsley, DDS, JD, Professor of Dentistry, with the Reidar Sognnaes AwardforExcellencein ForensicDentistry. This is another member in forensic dentistry­ the late Dr. Reidar Sognnaes ­ who was probably best known for disproving the theory

  7. A Heart Health American Indians

    E-Print Network [OSTI]

    Shen, Jun

    Honoring the Gift of Heart Health A Heart Health Educator's Manual for American Indians U . S . D E Health Service Office of Prevention, Education, and Control #12;Honoring the Gift of Heart Health A Heart National Heart, Lung, and Blood Institute and Indian Health Service NIH Publication No. 06-5218 Revised

  8. QER- Comment of American Water

    Broader source: Energy.gov [DOE]

    Dear QER Team; Thank you for the opportunity to provide comments to the Quadrennial Energy Review Task Force to discuss the water and energy nexus, advances in water innovative technologies, and the impact of climate change on water issues. On behalf of American Water, I wish to submit the following White Papers which we have prepared on these critical issues: Innovations in Energy Use Sustainability and Resiliency Planning for Water Utilities One Water Water/Energy Correlation The Value of Water Challenges in the Water Industry: Climate Change Challenges in the Water Industry: Meeting Demand in the West Innovation Solutions Within the Water Industry: Desalination Innovation Solutions Within the Water Industry: Going Green Innovation Solutions Within the Water Industry: Water Reuse Bridging the Water Innovation Gap. Founded in 1886, American Water is the largest publicly traded U.S. water and wastewater utility company. With headquarters in Voorhees, NJ, the company employs approximately 6,600 dedicated professionals who provide drinking water, wastewater and other related services to an estimated 14 million people in more than 40 states. Please feel free to contact me if you have any questions or if there is any way American Water can be helpful to your mission. Respectfully Yours, Martin (See attached file: White Papers.pdf) Martin D. Kerckhoff Vice President and Divisional General Counsel Central Division American Water CONFIDENTIAL & PRIVILEGED COMMUNICATION This email and any attachments hereto constitute a legally confidential communication from the Legal Department of American Water. The information contained herein is subject to attorney-client privilege and is for the sole use of the intended original addressee. If you are not the intended original addressee, you are hereby notified that any reading, disclosure, copying, distribution, use, or taking of any action in reliance on the contents contained herein is strictly prohibited. If you have received this message in error, please immediately notify us at 314.966.2241 and delete this message from your system. WARNING: Although American Water has taken reasonable precautions to ensure that no viruses are present in this email, it is the responsibility of the recipient to ensure that it is virus free. No responsibility is accepted by American Water for any loss or damage arising in any way from the receipt and/or use of this email.

  9. American Studies What does it mean to be American? What are the origins of American

    E-Print Network [OSTI]

    Miles, Will

    trends, popular culture, environmental issues, science and religion Emily Mieras, Ph.D., College, politics, values and culture? How are our lives shaped by race, ethnicity, class and gender? These are some, politics, religion, the arts and the sciences to gain an understanding of the American experience and its

  10. African Dust Influence on Atlantic Hurricane Activity and the Peculiar Behaviour of Category 5 Hurricanes

    E-Print Network [OSTI]

    Herrera, Victor M Velasco; H., Graciela Velasco; Gonzalez, Laura Luna

    2010-01-01

    We study the specific influence of African dust on each one of the categories of Atlantic hurricanes. By applying wavelet analysis, we find a strong decadal modulation of African dust on Category 5 hurricanes and an annual modulation on all other categories of hurricanes. We identify the formation of Category 5 hurricanes occurring mainly around the decadal minimum variation of African dust and in deep water areas of the Atlantic Ocean, where hurricane eyes have the lowest pressure. According to our results, future tropical cyclones will not evolve to Category 5 until the next decadal minimum that is, by the year 2015 +/- 2.

  11. A 10-Year Longitudinal Analysis of Family Composition and Its Impact on Body Mass Index Among African-American Women

    E-Print Network [OSTI]

    Jackson, Sharene

    2014-01-01

    such choices affect overconsumption of energy-dense foods.of energy-dense foods, which may encourage overconsumption.

  12. Exploring the Intersections of School Discipline, Discrimination, Connectedness, and Mental Health for African American High School Students

    E-Print Network [OSTI]

    Forrester, Kandace

    2015-01-01

    Kozol, J. (1991). Savage inequalities. Harper Perennial: NewExclusionary Discipline Inequalities: Magnitude of theContributing to Discipline Inequalities   Consequences and

  13. Breaking Outside the Walls: Teachers of Gifted and Talented African American Males in a Texas Urban Middle School 

    E-Print Network [OSTI]

    Henderson, Sowanda Nimmer

    2013-08-07

    Education and its associated resources continue to be unequally administered and delivered in the United States. All stakeholders in the education of the nation‘s children—parents, teachers, unions, school administrators, principals, community...

  14. Killing me softly: a meta-analysis examining risk factors associated with suicide among young African American males 

    E-Print Network [OSTI]

    Lemon, Dedra Deann

    2009-05-15

    interest. He revised Freud?s theory slightly by suggesting that individuals engage in acts of self- destruction hoping to evoke sympathy and cast reproach on those responsible for his/her lack of self esteem (Adler, 1958). Therefore an individual hurts...

  15. Not a One-Way Street: Exploring the Role of Intersectional Representation on African American Male Students 

    E-Print Network [OSTI]

    Walker, Meredith Brooke Loudd

    2012-07-16

    to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved by: Chair of Committee, Kenneth J. Meier Committee Members, Sylvia Manzano Rivera Erik Godwin Terah...) Meredith Brooke Loudd Walker, B.A., Texas A&M University Chair of Advisory Committee: Dr. Kenneth J. Meier Representation is an enduring area of research in Political Science. While there has been an extensive amount of research in the area...

  16. Excerpt from Negro Comrades of the Crown: African Americans and the British Empire Fight the U.S. before Emancipation

    E-Print Network [OSTI]

    Horne, Gerald

    2012-01-01

    and the British Empire Fight the U.S. before Emancipation (Sem- inole camp, living to fight again. 50 As Washington saw

  17. Communicaton and diversity: the adjustment and socialization of African American students at Texas A&M University 

    E-Print Network [OSTI]

    Mouton, Walelia Chevalier

    1994-01-01

    This research project examined the adjustment experiences of minority students at Texas A&M, a predominately white institution. Previous research suggests that predominately white institutions must make special efforts to offer programs designed...

  18. African American Students in a Middle Income, Urban School District: Five Successful Secondary Teachers’ Beliefs and Practices 

    E-Print Network [OSTI]

    Williams Jefferson, Rhonique Lia

    2013-12-03

    to discover emergent themes. Teachers conducted member checks throughout the process. The findings from the study yielded the following: (1) teachers developed an educational approach that informed their instructional practices, (2) teachers displayed a...

  19. Morphology of PolyethyleneCarbon Black Composites G. BEAUCAGE,1

    E-Print Network [OSTI]

    Beaucage, Gregory

    -ray scattering (SAXS) study of a conductive grade of carbon black and carbon black­polymer composites and a power-law scaling of polydispersity. One use of conductive black­polyethylene composites is in circuit(methyl methacrylate); carbon black; filler; composite; conductivity; percolation INTRODUCTION The morphology

  20. Report on the WORKSHOP ON COMMERCIALIZATION OF BLACK LIQUOR

    E-Print Network [OSTI]

    .3. Gasifier Supplier Perspectives 11 Black Liquor Gasifier Suppliers 12 Biomass Gasifier Suppliers 13 5

  1. Testing black hole candidates with electromagnetic radiation

    E-Print Network [OSTI]

    Bambi, Cosimo

    2015-01-01

    Astrophysical black hole candidates are thought to be the Kerr black holes of general relativity, but there is currently no direct observational evidence that the spacetime geometry around these objects is described by the Kerr solution. The study of the properties of the electromagnetic radiation emitted by gas or stars orbiting these objects can potentially test the Kerr black hole hypothesis. In this paper, I review the state of the art of this research field, describing the possible approaches to test the Kerr metric with current and future observational facilities and discussing current constraints.

  2. Quasinormal Modes of Dirty Black Holes

    E-Print Network [OSTI]

    P. T. Leung; Y. T. Liu; W. -M. Suen; C. Y. Tam; K. Young

    1999-03-08

    Quasinormal mode (QNM) gravitational radiation from black holes is expected to be observed in a few years. A perturbative formula is derived for the shifts in both the real and the imaginary part of the QNM frequencies away from those of an idealized isolated black hole. The formulation provides a tool for understanding how the astrophysical environment surrounding a black hole, e.g., a massive accretion disk, affects the QNM spectrum of gravitational waves. We show, in a simple model, that the perturbed QNM spectrum can have interesting features.

  3. Black Hole Thermodynamics and Statistical Mechanics

    E-Print Network [OSTI]

    Steven Carlip

    2008-07-28

    We have known for more than thirty years that black holes behave as thermodynamic systems, radiating as black bodies with characteristic temperatures and entropies. This behavior is not only interesting in its own right; it could also, through a statistical mechanical description, cast light on some of the deep problems of quantizing gravity. In these lectures, I review what we currently know about black hole thermodynamics and statistical mechanics, suggest a rather speculative "universal" characterization of the underlying states, and describe some key open questions.

  4. Some remarks on black hole thermodynamics

    E-Print Network [OSTI]

    R. Y. Chiao

    2011-02-04

    Two thermodynamic "paradoxes" of black hole physics are re-examined. The first is that there is a thermal instability involving two coupled blackbody cavities containing two black holes, and second is that a classical black hole can swallow up entropy in the form of ambient blackbody photons without increasing its mass. The resolution of the second paradox by Bekenstein and by Hawking is re-visited. The link between Hawking radiation and Wigner's superluminal tunneling time is discussed using two equivalent Feynman diagrams, and Feynman's re-interpretation principle.

  5. Thermodynamics of Dyonic Lifshitz Black Holes

    E-Print Network [OSTI]

    Tobias Zingg

    2011-07-15

    Black holes with asymptotic anisotropic scaling are conjectured to be gravity duals of condensed matter system close to quantum critical points with non-trivial dynamical exponent z at finite temperature. A holographic renormalization procedure is presented that allows thermodynamic potentials to be defined for objects with both electric and magnetic charge in such a way that standard thermodynamic relations hold. Black holes in asymptotic Lifshitz spacetimes can exhibit paramagnetic behavior at low temperature limit for certain values of the critical exponent z, whereas the behavior of AdS black holes is always diamagnetic.

  6. Testing the Kerr black hole hypothesis

    E-Print Network [OSTI]

    Cosimo Bambi

    2011-10-13

    It is thought that the final product of the gravitational collapse is a Kerr black hole and astronomers have discovered several good astrophysical candidates. While there is some indirect evidence suggesting that the latter have an event horizon, and therefore that they are black holes, a proof that the space-time around these objects is described by the Kerr geometry is still lacking. Recently, there has been an increasing interest in the possibility of testing the Kerr black hole hypothesis with present and future experiments. In this paper, I briefly review the state of the art of the field, focussing on some recent results and work in progress.

  7. Scalar Perturbations of Charged Dilaton Black Holes

    E-Print Network [OSTI]

    Sharmanthie Fernando; Keith Arnold

    2015-08-01

    We have studied the scalar perturbation of static charged dilaton black holes in 3+1 dimensions. The black hole considered here is a solution to the low-energy string theory in 3+1 dimensions. The quasinormal modes for the scalar perturbations are calculated using the third order WKB method. The dilaton coupling constant has a considerable effect on the values of quasi normal modes. It is also observed that there is a linear relation between the quasi normal modes and the temperature for large black holes.

  8. Energy density bounds for black strings

    E-Print Network [OSTI]

    Shinya Tomizawa

    2005-06-07

    The conserved charge called Y-ADM mass density associated with asymptotically translational Killing-Yano tensor gives us an appropriate physical meaning about the energy density of $p$ brane spacetimes or black strings. We investigated the positivity of energy density in black string spacetimes, using the spinorial technique introduced by Witten. Recently, the positivity of Y-ADM mass density in p brane spacetimes was discussed. In this paper, we will extend this discussion to the transversely asymptotically flat black string spacetimes containing an apparent horizon. We will give the sufficient conditions for the Y-ADM mass density to become positive in such spacetimes.

  9. Thermodynamics and evaporation of the noncommutative black hole

    E-Print Network [OSTI]

    Yun Soo Myung; Yong-Wan Kim; Young-Jai Park

    2007-01-21

    We investigate the thermodynamics of the noncommutative black hole whose static picture is similar to that of the nonsingular black hole known as the de Sitter-Schwarzschild black hole. It turns out that the final remnant of extremal black hole is a thermodynamically stable object. We describe the evaporation process of this black hole by using the noncommutativity-corrected Vaidya metric. It is found that there exists a close relationship between thermodynamic approach and evaporation process.

  10. Energy of 4-Dimensional Black Hole, etc

    E-Print Network [OSTI]

    Dmitriy Palatnik

    2011-07-18

    In this letter I suggest possible redefinition of mass density, not depending on speed of the mass element, which leads to a more simple stress-energy for an object. I calculate energy of black hole.

  11. Horizon Operator Approach to Black Hole Quantization

    E-Print Network [OSTI]

    G. 't Hooft

    1994-02-21

    The $S$-matrix Ansatz for the construction of a quantum theory of black holes is further exploited. We first note that treating the metric tensor $g_{\\m\

  12. Topological Black Holes -- Outside Looking In

    E-Print Network [OSTI]

    R. B. Mann

    1997-09-15

    I describe the general mathematical construction and physical picture of topological black holes, which are black holes whose event horizons are surfaces of non-trivial topology. The construction is carried out in an arbitrary number of dimensions, and includes all known special cases which have appeared before in the literature. I describe the basic features of massive charged topological black holes in $(3+1)$ dimensions, from both an exterior and interior point of view. To investigate their interiors, it is necessary to understand the radiative falloff behaviour of a given massless field at late times in the background of a topological black hole. I describe the results of a numerical investigation of such behaviour for a conformally coupled scalar field. Significant differences emerge between spherical and higher genus topologies.

  13. Evidence for the Black Hole Event Horizon

    E-Print Network [OSTI]

    Ramesh Narayan; Jeremy S. Heyl

    2002-04-26

    Roughly a dozen X-ray binaries are presently known in which the compact accreting primary stars are too massive to be neutron stars. These primaries are identified as black holes, though there is as yet no definite proof that any of the candidate black holes actually possesses an event horizon. We discuss how Type I X-ray bursts may be used to verify the presence of the event horizon in these objects. Type I bursts are caused by thermonuclear explosions when gas accretes onto a compact star. The bursts are commonly seen in many neutron star X-ray binaries, but they have never been seen in any black hole X-ray binary. Our model calculations indicate that black hole candidates ought to burst frequently if they have surfaces. Based on this, we argue that the lack of bursts constitutes strong evidence for the presence of event horizons in these objects.

  14. CHARYBDIS: A Black hole event generator.

    E-Print Network [OSTI]

    Harris, Chris M.; Richardson, P.; Webber, Bryan R.

    CHARYBDIS is an event generator which simulates the production and decay of miniature black holes at hadronic colliders as might be possible in certain extra dimension models. It interfaces via the Les Houches accord to general purpose Monte...

  15. Spacetime constraints on accreting black holes

    SciTech Connect (OSTI)

    Garofalo, David [Jet Propulsion Laboratory, California Institute of Technology, Pasadena California 91109 (United States)

    2009-06-15

    We study the spin dependence of accretion onto rotating Kerr black holes using analytic techniques. In its linear regime, angular momentum transport in MHD turbulent accretion flow involves the generation of radial magnetic field connecting plasma in a differentially rotating flow. We take a first principles approach, highlighting the constraint that limits the generation and amplification of radial magnetic fields, stemming from the transfer of energy from mechanical to magnetic form. Because the energy transferred in magnetic form is ultimately constrained by gravitational potential energy or Killing energy, the spin dependence of the latter allows us to derive spin-dependent constraints on the success of the accreting plasma to expel its angular momentum. We find an inverse relationship between this ability and black hole spin. If this radial magnetic field generation forms the basis for angular momentum transfer in accretion flows, accretion rates involving Kerr black holes are expected to be lower as the black hole spin increases in the prograde sense.

  16. Black Hills Energy- Solar Power Program

    Broader source: Energy.gov [DOE]

    All incentive payments are subject to the availability of funds and a pre-installation site inspection. Black Hills Energy has established participation caps for each tier. The status of funding ...

  17. A metallurgical study of West African iron monies from Cameroon and Liberia

    E-Print Network [OSTI]

    Papakirillou, Ismini

    2009-01-01

    The aim of this thesis is to make a contribution to the study of West African iron monies through examination and analysis of a group of these objects in the collection of the Peabody Museum of Archaeology and Ethnology ...

  18. Strategic management of innovation and entrepreneurial framework applied to the South African nanotechnology flagship projects

    E-Print Network [OSTI]

    Hillie, Kenneth Thembela

    2012-01-01

    This study considers four South African nanotechnology flagship projects and evaluates them using the Strategic Management of Innovation and entrepreneurial framework. The flagship projects span a variety of focus areas ...

  19. Post-liberation Politics: African Perspectives Examining the political legacy of struggle 

    E-Print Network [OSTI]

    Dorman, Sara Rich

    2006-05-08

    This article examines the politics of African states in which insurgencies or liberation movements have taken control of the government. It examines the impact on governance of reforms introduced by these post-liberation ...

  20. Identification of Trypanosome Proteins in Plasma from African Sleeping Sickness Patients Infected with T. b. rhodesiense

    E-Print Network [OSTI]

    Eyford, Brett A.

    Control of human African sleeping sickness, caused by subspecies of the protozoan parasite Trypanosoma brucei, is based on preventing transmission by elimination of the tsetse vector and by active diagnostic screening and ...

  1. Bull-switching in African Bovid Herds: Assessing Best Practices for Breeding Management in Waterbuck 

    E-Print Network [OSTI]

    Jones, Renee Crystal Michelle

    2011-10-21

    To implement sustainable ex-situ management of big ungulate herds such as African Waterbuck (Kobus ellipsiprymnus), one strategy is to place a vasectomized male with females during the sub-optimal season for breeding and ...

  2. Estimated impacts of soil degradation on the African water balance and climate

    E-Print Network [OSTI]

    Feddema, Johannes J.

    1998-01-01

    This study uses a well-established water balance methodology, the Thornthwaite-Mather approach, to evaluate the effects of soil water holding capacity assumptions on estimates of African evapotranspiration rates, moisture deficit, and moisture...

  3. Abundance and Distribution of Africanized Honey Bees in an Urban Environments 

    E-Print Network [OSTI]

    Chen, Szu-Hung

    2013-01-18

    found in Tucson, AZ. since 1993. It is important to understand the population ecology of AHB for several reasons. Most directly, the behavioral traits retained from African bees present public safety and health risk. AHB are easily agitated; even...

  4. Studies into host macrophage transcriptional control by the African Swine Fever Virus protein A238L 

    E-Print Network [OSTI]

    Silk, Rhiannon Nicola

    2010-01-01

    African swine fever virus (ASFV) is a large double-stranded DNA virus which causes a lethal haemorrhagic fever in domestic pigs. This virus primarily infects cells from the monocyte/macrophage lineage and its ability to ...

  5. Structure of an African city : study of Ibadan, Nigeria : city structure and morphology

    E-Print Network [OSTI]

    Murphy, Stephan L. (Stephan Lane), 1971-

    1998-01-01

    The study of Ibadan, Nigeria was conducted to analyze how Colonization has altered, or not altered the structure of the traditional African city form of this Yoruba town. The study encompasses structural city form elements ...

  6. Cold War love : producing American liberalism in interracial marriages between American soldiers and Japanese women

    E-Print Network [OSTI]

    Tsuchiya, Tomoko

    2011-01-01

    Justice: Americanization of Japanese War Crimes at the Endof the Post-Cold War. ” Journal of Asian American Studies256. Berry, Nicholas O. War and the Red Cross: The Unspoken

  7. Classical and thermodynamic stability of black holes

    E-Print Network [OSTI]

    Monteiro, Ricardo

    2010-07-06

    Perturbations of the asymptotic charges . . . . . . . . . . . . . . . . 169 IV Conclusion 171 9 Conclusion and outlook 173 A Spectral numerical method 177 2 CONTENTS Part I Introduction 3 Chapter 1 Black holes Black holes are arguably the most interesting... to Newto- nian dynamics in the Solar system, and the indirect detection of gravitational waves from binary pulsars [1]. A crucial distinction from Newtonian gravity is that the “action-at-a-distance” is substituted by a built-in causality structure...

  8. Charged Cylindrical Black Holes in Conformal Gravity

    E-Print Network [OSTI]

    Jackson Levi Said; Joseph Sultana; Kristian Zarb Adami

    2013-01-04

    Considering cylindrical topology we present the static solution for a charged black hole in conformal gravity. We show that unlike the general relativistic case there are two different solutions, both including a factor that when set to zero recovers the familiar static charged black string solution in Einstein's theory. This factor gives rise to a linear term in the potential that also features in the neutral case and may have significant ramifications for particle trajectories.

  9. Black Holes and Biophysical (Mem)-branes

    E-Print Network [OSTI]

    Jay Armas; Troels Harmark

    2014-11-26

    We argue that the effective theory describing the long-wavelength dynamics of black branes is the same effective theory that describes the dynamics of biophysical membranes. We improve the phase structure of higher-dimensional black rings by considering finite thickness corrections in this effective theory, showing a striking agreement between our analytical results and recent numerical constructions while simultaneously drawing a parallel between gravity and the effective theory of biophysical membranes.

  10. Fractionated Branes and Black Hole Interiors

    E-Print Network [OSTI]

    Emil J. Martinec

    2015-05-20

    Combining a variety of results in string theory and general relativity, a picture of the black hole interior is developed wherein spacetime caps off at an inner horizon, and the inter-horizon region is occupied by a Hagedorn gas of a very low tension state of fractionated branes. This picture leads to natural resolutions of a variety of puzzles concerning quantum black holes. Gravity Research Foundation 2015 Fourth Prize Award for Essays on Gravitation.

  11. Moore honored with American Statistical Association award

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

    impact. Moore is a Fellow of the Royal Statistical Society. Her awards include Certified Six Sigma Master Black Belt, Laboratory Distinguished Performance Team Award, and a...

  12. American black bear habitat selection in northern lower peninsula, Michigan, USA, using discrete-choice modeling

    E-Print Network [OSTI]

    Brown, Daniel G.

    data better than others; both indicated that locations of bears were negatively associated with water bear harvests, sightings, and nuisance reports. Policy makers and wildlife managers can prepare 1991­2000 for 20 males and 35 females. We developed Bayesian random effects discrete-choice models

  13. American black bear habitat selection in northern Lower Peninsula, Michigan, USA, using discrete-choice modeling

    E-Print Network [OSTI]

    data better than others; both indicated that locations of bears were negatively associated with water bear harvests, sightings, and nuisance reports. Policy makers and wildlife managers can prepare 1991­2000 for 20 males and 35 females. We developed Bayesian random effects discrete-choice models

  14. Habitat Use and Energetic Carrying Capacity of American Black Ducks Wintering in Western Tennessee

    E-Print Network [OSTI]

    Gray, Matthew

    ) More info on Habitat Use Manage for more energe)cally important foods, and other waterfowl, and es)mate energe)c carrying capacity, in treated

  15. Berries Bittersweet: Visual Representations of Black Female Sexuality in Contemporary American Pornography

    E-Print Network [OSTI]

    Cruz, Ariane Renee

    2010-01-01

    affects of online porn on children, see Laurence O’Toole,porn, there exists the fear of pornographic images of minors being available to pedophiles and the circulation of child

  16. (Re) framing the nation : the Afro -Cuban challenge to Black and Latino struggles for American identity

    E-Print Network [OSTI]

    Gosin, Monika

    2009-01-01

    New York: Rayo. Van Dijk, Teun. (1987). CommunicatingNewbury Park, CA: Sage. Van Dijk, Teun. (1993). PrinciplesWest-Durán, 2004; van Dijk, 1993, Whetherell & Potter,

  17. Berries Bittersweet: Visual Representations of Black Female Sexuality in Contemporary American Pornography

    E-Print Network [OSTI]

    Cruz, Ariane Renee

    2010-01-01

    Smith, Seth. The Big Book of Porn: A Penetrating Look at theUncensored Oral History of the Porn Film Industry. New York:Press, 1993. Alice Walker, “Porn” in You Can’t Keep a Good

  18. Unmarried partners: a comparison of Anglos, Asians, Blacks, Hispanics, and Native Americans using assimilation theory 

    E-Print Network [OSTI]

    Walther, Carol Sue

    2001-01-01

    increased to what is now a prevalently studied household formation. In this thesis, I apply Milton Gordon's assimilation perspective to heterosexual, gay and lesbian unmarried partners. In the assimilation perspective, Gordon (1964) asserts that minority...

  19. Central American geologic map project

    SciTech Connect (OSTI)

    Dengo, G.

    1986-07-01

    During the Northeast Quadrant Panel meeting of the Circum-Pacific Map Project held in Mexico City, February 1985, Central American panel members proposed and adopted plans for compiling a geologic map of Central America, probably at a scale of 1:500,000. A local group with participants from each country was organized and coordinated by Rolando Castillo, director, Central American School of Geology, University of Costa Rica, for the geologic aspects, and Fernando Rudin, director, Geographic Institute of Costa Rica, for the topographic base. In 1956, the US Geological Survey published a geologic map of the region at a scale of 1:1 million. Subsequent topographic and geologic mapping projects have provided a large amount of new data. The entire area is now covered by topographic maps at a scale of 1:50,000, and these maps have been used in several countries as a base for geologic mapping. Another regional map, the Metallogenic Map of Central America (scale = 1:2 million), was published in 1969 by the Central American Research Institute for Industry (ICAITI) with a generalized but updated geologic base map. Between 1969 and 1980, maps for each country were published by local institutions: Guatemala-Belize at 1:500,000, Honduras at 1:500,000, El Salvador at 1:100,000, Nicaragua at 1:1 million, Costa Rica at 1:200,000, and Panama at 1:1 million. This information, in addition to that of newly mapped areas, served as the base for the Central American part of the Geologic-Tectonic Map of the Caribbean Region (scale = 1:2.5 million), published by the US Geological Survey in 1980, and also fro the Northeast Quadrant Maps of the Circum-Pacific Region. The new project also involves bathymetric and geologic mapping of the Pacific and Caribbean margins of the Central American Isthmus. A substantial amount of new information of the Middle America Trench has been acquired through DSDP Legs 67 and 84.

  20. American Valve: Proposed Penalty (2010-CW-1411)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that American Valve, Inc. failed to certify a variety of showerheads as compliant with the applicable water conservation standards.

  1. Americans with Disabilities Act Signed (1990)

    Broader source: Energy.gov [DOE]

    The Americans with Disabilities Act of 1990 (ADA) prohibits discrimination and ensures equal opportunity for persons with disabilities in employment, State and local government services, public...

  2. The Smithsonian American Art Museum GATEWAY Demonstration

    Broader source: Energy.gov [DOE]

    View the video about using LEDs in a GATEWAY demonstration at the Smithsonian American Art Museum in Washington, DC, including an interview with lighting designer Scott Rosenfeld.

  3. Comments of North American Electric Reliability Corporation ...

    Office of Environmental Management (EM)

    RFI. North American Electric Reliability Corporation (NERC) More Documents & Publications City Utilities of Springfield Missouri Comments on Smart Grid RFI: Addressing Policy and...

  4. North American Renewables Registry (Multiple States)

    Broader source: Energy.gov [DOE]

    The North American Renewables Registry (NAR) provides a Web-based platform trusted to create, track, and manage renewable energy certificate (REC) origination for clean generation facilities and...

  5. New American Home 2011, Orlando, Florida (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2010-12-01

    This brochure details the New American Home 2011, which demonstrates the use of innovative building materials, cutting-edge design, and the latest construction techniques.

  6. American Energy and Manufacturing Competitiveness Summit

    Broader source: Energy.gov [DOE]

    The American Energy and Manufacturing Competitiveness Summit will bring together leaders and perspectives from industry, government, academia, national laboratories, labor, and policy organizations...

  7. Nanoscopy Reveals Metallic Black Phosphorus

    E-Print Network [OSTI]

    Abate, Yohannes; Zhen, Li; Cronin, Stephen B; Wang, Han; Babicheva, Viktoriia; Javani, Mohammad H; Stockman, Mark I

    2015-01-01

    Layered and two-dimensional (2D) materials such as graphene, boron nitride, transition metal dichalcogenides(TMDCs), and black phosphorus (BP) have intriguing fundamental physical properties and bear promise of numerous important applications in electronics and optics. Of them, BP is a novel 2D material that has been theoretically predicted to acquire plasmonic behavior for frequencies below ~0.4 eV when highly doped. The electronic properties of BP are unique due to an anisotropic structure, which could strongly influence collective electronic excitations. Advantages of BP as a material for nanoelectronics and nanooptics are due to the fact that, in contrast to metals, the free carrier density in it can be dynamically controlled by electrostatic gating, which has been demonstrated by its use in field-effect transistors. Despite all the interest that BP attracts, near-field and plasmonic properties of BP have not yet been investigated experimentally. Here we report the first observation of nanoscopic near-fie...

  8. Wanderlust: rootlessness and restlessness in American culture, 1950-1970 

    E-Print Network [OSTI]

    Lepine, Amy

    2013-02-22

    Historian Ray Billington, in arguing that the "migratory compulsion" in Americans is partly the result of the influence of the frontier on American history, claims: "If students of the American character can agree upon any ...

  9. American Indian Studies Program at Haskell Indian Nations University

    E-Print Network [OSTI]

    Chenault, Venida

    2001-03-01

    currently offered by American Indian Studies meeting requirements for the major include: A1S301 Introduction to American Indian Studies - 3 credit hours Introduces students to the American Indian Studies (AIS) discipline, but also challenges the standard... currently offered by American Indian Studies meeting requirements for the major include: A1S301 Introduction to American Indian Studies - 3 credit hours Introduces students to the American Indian Studies (AIS) discipline, but also challenges the standard...

  10. Rotating black hole thermodynamics with a particle probe

    SciTech Connect (OSTI)

    Gwak, Bogeun; Lee, Bum-Hoon

    2011-10-15

    The thermodynamics of Myers-Perry black holes in general dimensions are studied using a particle probe. When undergoing particle absorption, the changes of the entropy and irreducible mass are shown to be dependent on the particle radial momentum. The black hole thermodynamic behaviors are dependent on dimensionality for specific rotations. For a 4-dimensional Kerr black hole, its black hole properties are maintained for any particle absorption. 5-dimensional black holes can avoid a naked ring singularity by absorbing a particle in specific momenta ranges. Black holes over 6 dimensions become ultraspinning black holes through a specific form of particle absorption. The microscopical changes are interpreted in limited cases of Myers-Perry black holes using Kerr/CFT correspondence. We systematically describe the black hole properties changed by particle absorption in all dimensions.

  11. Lumpy AdS$\\bf{_5\\times}$ S$\\bf{^5}$ Black Holes and Black Belts

    E-Print Network [OSTI]

    Oscar J. C. Dias; Jorge E. Santos; Benson Way

    2015-01-26

    Sufficiently small Schwarzschild black holes in global AdS$_5\\times$S$^5$ are Gregory-Laflamme unstable. We construct new families of black hole solutions that bifurcate from the onset of this instability and break the full SO$(6)$ symmetry group of the S$^5$ down to SO$(5)$. These new "lumpy" solutions are labelled by the harmonics $\\ell$. We find evidence that the $\\ell = 1$ branch never dominates the microcanonical/canonical ensembles and connects through a topology-changing merger to a localised black hole solution with S$^8$ topology. We argue that these S$^8$ black holes should become the dominant phase in the microcanonical ensemble for small enough energies, and that the transition to Schwarzschild black holes is first order. Furthermore, we find two branches of solutions with $\\ell = 2$. We expect one of these branches to connect to a solution containing two localised black holes, while the other branch connects to a black hole solution with horizon topology $\\mathrm S^4\\times\\mathrm S^4$ which we call a "black belt".

  12. Scientific American: "Tall Trees Sucked Dry by Global Warming...

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

    Scientific American: "Tall Trees Sucked Dry by Global Warming" June 7, 2015 Scientific American: "Tall Trees Sucked Dry by Global Warming" A well-known scientific principle...

  13. North American Market Challenges for Diesel Engines | Department...

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

    American Market Challenges for Diesel Engines North American Market Challenges for Diesel Engines 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Gale Banks...

  14. American Gas Association Memorandum Summarizing Ex Parte Communication...

    Energy Savers [EERE]

    Memorandum Summarizing Ex Parte Communication American Gas Association Memorandum Summarizing Ex Parte Communication On October 9, 2014, a workshop was hosted by the American Gas...

  15. Laboratory Demonstration of a New American Low-Head Hydropower...

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

    Demonstration of a New American Low-Head Hydropower Turbine 68bhydrogreensmallhydroch11.ppt More Documents & Publications Real World Demonstration of a New American...

  16. North American SynchroPhasor Initiative (NASPI) Technical Report...

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

    Phasor Tools Visualization North American SynchroPhasor Initiative (NASPI) Technical Report - Phasor Tools Visualization This technical report was developed by the North American...

  17. Energy Secretary Moniz Will Host North American Energy Ministers...

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

    highlight three key areas, including: 1) North American data collaboration, 2) Mexico's energy reform and its implications for the North American energy sector, and 3) creating a...

  18. The Economic and Educational Impact of Native American Art Markets

    E-Print Network [OSTI]

    Wray, Taylor Elaine

    2015-01-01

    Institute of American Indian Arts: Modernism and U.S. Indianand Charlotte Klonk. Art History: A Critical Introduction toCompany and Native American Art. Flagstaff, AZ: Northland

  19. Energy Department Selects Five Native American Communities to...

    Office of Environmental Management (EM)

    Selects Five Native American Communities to Receive Technical Assistance for Tribal Renewable Energy Project Development Energy Department Selects Five Native American...

  20. Laboratory Demonstration of a New American Low-Head Hydropower...

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

    Laboratory Demonstration of a New American Low-Head Hydropower Turbine Laboratory Demonstration of a New American Low-Head Hydropower Turbine Laboratory Demonstration of a New...

  1. North American Energy Ministers Take Further Action on Energy...

    Office of Environmental Management (EM)

    North American Energy Ministers Take Further Action on Energy Security and the Environment North American Energy Ministers Take Further Action on Energy Security and the...

  2. American Energy Data Challenge Hackathons - "Apps For Energy...

    Energy Savers [EERE]

    American Energy Data Challenge Hackathons - "Apps For Energy": Turning Energy Data into Working Apps in 24 Hours American Energy Data Challenge Hackathons - "Apps For Energy":...

  3. Energy Department Authorizes American LNG Marketing LLC's Application...

    Energy Savers [EERE]

    American LNG Marketing LLC's Application to Export Liquefied Natural Gas Energy Department Authorizes American LNG Marketing LLC's Application to Export Liquefied Natural Gas...

  4. Energy Secretary Moniz Will Host North American Energy Ministers...

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

    three key areas, including: 1) North American data collaboration, 2) Mexico's energy reform and its implications for the North American energy sector, and 3) creating a resilient...

  5. Program Website: http://www.nrel.colostate.edu/projects/ires EA-IRES: East African International Research

    E-Print Network [OSTI]

    MacDonald, Lee

    Program Website: http://www.nrel.colostate.edu/projects/ires EA-IRES: East African Ecology Laboratory (NREL) in the Warner College of Natural Resources

  6. Holographic superconductor in the exact hairy black hole

    E-Print Network [OSTI]

    Yun Soo Myung; Chanyong Park

    2011-09-13

    We study the charged black hole of hyperbolic horizon with scalar hair (charged Martinez-Troncoso-Zanelli: CMTZ black hole) as a model of analytic hairy black hole for holographic superconductor. For this purpose, we investigate the second order phase transition between CMTZ and hyperbolic Reissner-Nordstr\\"om-AdS (HRNAdS) black holes. However, this transition unlikely occur. As an analytic treatment for holographic superconductor, we develop superconductor in the bulk and superfluidity on the boundary using the CMTZ black hole below the critical temperature. The presence of charge destroys the condensates around the zero temperature, which is in accord with the thermodynamic analysis of the CMTZ black hole.

  7. Identity, Voice, Community: New African Immigrants to Kansas

    E-Print Network [OSTI]

    Janzen, John M.

    2006-06-27

    in Kansas City and Wichita for a decade or more, the result of civil war, repression, and drought/famine, with perhaps 500 in all; Sudanese of the north, the middle region, the south, and most recently the west, have come often as refugees and political... straight-forward in the Midwest than in big cities of the East; educational opportunities are available more advantageously; raising families is possible; in a few case like the Zanzibari-American Association, the national headquarters is in Kansas; 9...

  8. North American Natural Gas Markets

    SciTech Connect (OSTI)

    Not Available

    1989-02-01

    This report summarizes die research by an Energy Modeling Forum working group on the evolution of the North American natural gas markets between now and 2010. The group's findings are based partly on the results of a set of economic models of the natural gas industry that were run for four scenarios representing significantly different conditions: two oil price scenarios (upper and lower), a smaller total US resource base (low US resource case), and increased potential gas demand for electric generation (high US demand case). Several issues, such as the direction of regulatory policy and the size of the gas resource base, were analyzed separately without the use of models.

  9. American Recovery and Reinvestment Act

    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 OutreachProductswsicloudwsiclouddenDVA N C E D B L O O D S TAPropaneand Los Alamos NationalAmerican Recovery

  10. The Automobile in American History History 392

    E-Print Network [OSTI]

    Fletcher, Robin

    1 The Automobile in American History History 392 Consider Resources Primary Resources: letters. popular), theses, the Web Check subject guide: How-to & Help Research by Subject History American History Find Background Information The following titles are shelved in the Stauffer Library Reference

  11. AmericanSociety of Civil Engineers

    E-Print Network [OSTI]

    AmericanSociety of Civil Engineers Civil Engineering Body of Knowledge for the 21st Century Preparing the Civil Engineer for the Future Second Edition Prepared by the Body of Knowledge Committee Engineers--Registered in U.S. Patent and Trademark Office. American Society of Civil Engineers 1801

  12. The Great American Education-Industrial Complex

    E-Print Network [OSTI]

    Johnson Jr.,, Ray

    The Great American Education-Industrial Complex Ideology, Technology, and Profit Anthony G. Picciano & Joel Spring The Great American Education-Industrial Complex examines the structure and nature in a powerful common entity, and detail how the educational-industrial complex has grown and strengthened its

  13. American Cooler Technologies: Order (2013-CE-5305)

    Broader source: Energy.gov [DOE]

    DOE ordered American Cooler Technologies to pay a $8,000 civil penalty after finding American Cooler Technologies had failed to certify that certain models of walk-in coolers or freezers (WICF) components comply with the applicable energy conservation standards.

  14. Electrically charged black hole with scalar hair

    E-Print Network [OSTI]

    Cristian Martinez; Ricardo Troncoso

    2006-06-16

    An electrically charged black hole solution with scalar hair in four dimensions is presented. The self-interacting scalar field is real and it is minimally coupled to gravity and electromagnetism. The event horizon is a surface of negative constant curvature and the asymptotic region is locally an AdS spacetime. The asymptotic fall-off of the fields is slower than the standard one. The scalar field is regular everywhere except at the origin, and is supported by the presence of electric charge which is bounded from above by the AdS radius. In turn, the presence of the real scalar field smooths the electromagnetic potential everywhere. Regardless the value of the electric charge, the black hole is massless and has a fixed temperature. The entropy follows the usual area law. It is shown that there is a nonvanishing probability for the decay of the hairy black hole into a charged black hole without scalar field. Furthermore, it is found that an extremal black hole without scalar field is likely to undergo a spontaneous dressing up with a nontrivial scalar field, provided the electric charge is below a critical value.

  15. The Environmental Impact of Supermassive Black Holes

    E-Print Network [OSTI]

    Abraham Loeb

    2004-08-10

    The supermassive black holes observed at the centers of almost all present-day galaxies, had a profound impact on their environment. I highlight the principle of self-regulation, by which supermassive black holes grow until they release sufficient energy to unbind the gas that feeds them from their host galaxy. This principle explains several observed facts, including the correlation between the mass of a central black hole and the depth of the gravitational potential well of its host galaxy, and the abundance and clustering properties of bright quasars in the redshift interval of z~2-6. At lower redshifts, quasars might have limited the maximum mass of galaxies through the suppression of cooling flows in X-ray clusters. The seeds of supermassive black holes were likely planted in dwarf galaxies at redshifts z>10, through the collapse of massive or supermassive stars. The minimum seed mass can be identified observationally through the detection of gravitational waves from black hole binaries by Advanced LIGO or LISA. Aside from shaping their host galaxies, quasar outflows filled the intergalactic medium with magnetic fields and heavy elements. Beyond the reach of these outflows, the brightest quasars at z>6 have ionized exceedingly large volumes of gas (tens of comoving Mpc) prior to global reionization, and must have suppressed the faint end of the galaxy luminosity function in these volumes before the same occurred through the rest of the universe.

  16. Perturbative String Thermodynamics near Black Hole Horizons

    E-Print Network [OSTI]

    Thomas G. Mertens; Henri Verschelde; Valentin I. Zakharov

    2015-07-01

    We provide further computations and ideas to the problem of near-Hagedorn string thermodynamics near (uncharged) black hole horizons, building upon our earlier work JHEP 1403 (2014) 086. The relevance of long strings to one-loop black hole thermodynamics is emphasized. We then provide an argument in favor of the absence of $\\alpha'$-corrections for the (quadratic) heterotic thermal scalar action in Rindler space. We also compute the large $k$ limit of the cigar orbifold partition functions (for both bosonic and type II superstrings) which allows a better comparison between the flat cones and the cigar cones. A discussion is made on the general McClain-Roth-O'Brien-Tan theorem and on the fact that different torus embeddings lead to different aspects of string thermodynamics. The black hole/string correspondence principle for the 2d black hole is discussed in terms of the thermal scalar. Finally, we present an argument to deal with arbitrary higher genus partition functions, suggesting the breakdown of string perturbation theory (in $g_s$) to compute thermodynamical quantities in black hole spacetimes.

  17. Thermodynamics and Luminosities of Rainbow Black Holes

    E-Print Network [OSTI]

    Benrong Mu; Peng Wang; Haitang Yang

    2015-07-14

    Doubly special relativity (DSR) is an effective model for encoding quantum gravity in flat spacetime. As a result of the nonlinearity of the Lorentz transformation, the energy-momentum dispersion relation is modified. One simple way to import DSR to curved spacetime is \\textquotedblleft Gravity's rainbow", where the spacetime background felt by a test particle would depend on its energy. Focusing on the \\textquotedblleft Amelino-Camelia dispersion relation" which is $E^{2}=m^{2}+p^{2}\\left[ 1-\\eta\\left( E/m_{p}\\right) ^{n}\\right] $ with $n>0$, we investigate the thermodynamical properties of a Schwarzschild black hole and a static uncharged black string for all possible values of $\\eta$ and $n$ in the framework of rainbow gravity. It shows that there are non-vanishing minimum masses for these two black holes in the cases with $\\eta<0$ and $n\\geq2$. Considering effects of rainbow gravity on both the Hawking temperature and radius of the event horizon, we use the geometric optics approximation to compute luminosities of a 2D black hole, a Schwarzschild one and a static uncharged black string. It is found that the luminosities can be significantly suppressed or boosted depending on the values of $\\eta$ and $n$.

  18. Black Hole Spin in AGN and GBHCs

    E-Print Network [OSTI]

    Christopher S. Reynolds; Laura W. Brenneman; David Garofalo

    2004-10-05

    We discuss constraints on black hole spin and spin-related astrophysics as derived from X-ray spectroscopy. After a brief discussion about the robustness with which X-ray spectroscopy can be used to probe strong gravity, we summarize how these techniques can constrain black hole spin. In particular, we highlight XMM-Newton studies of the Seyfert galaxy MCG-6-30-15 and the stellar-mass black hole GX339-4. The broad X-ray iron line profile, together with reasonable and general astrophysical assumptions, allow a non-rotating black hole to be rejected in both of these sources. If we make the stronger assertion of no emission from within the innermost stable circular orbit, the MCG-6-30-15 data constrain the dimensionless spin parameter to be a>0.93. Furthermore, these XMM-Newton data are already providing evidence for exotic spin-related astrophysics in the central regions of this object. We conclude with a discussion of the impact that Constellation-X will have on the study of strong gravity and black hole spin.

  19. Investigating Dark Energy with Black Hole Binaries

    E-Print Network [OSTI]

    Laura Mersini-Houghton; Adam Kelleher

    2009-06-08

    The accelerated expansion of the universe is ascribed to the existence of dark energy. Black holes accretion of dark energy induces a mass change proportional to the energy density and pressure of the background dark energy fluid. The time scale during which the mass of black holes changes considerably is too long relative to the age of the universe, thus beyond detection possibilities. We propose to take advantage of the modified black hole masses for exploring the equation of state $w[z]$ of dark energy, by investigating the evolution of supermassive black hole binaries on a dark energy background. Deriving the signatures of dark energy accretion on the evolution of binaries, we find that dark energy imprints on the emitted gravitational radiation and on the changes in the orbital radius of the binary can be within detection limits for certain supermassive black hole binaries. In this talk I describe how binaries can provide a useful tool in obtaining complementary information on the nature of dark energy, based on the work done with A.Kelleher.

  20. Rotating black lens solution in five dimensions

    SciTech Connect (OSTI)

    Chen Yu; Teo, Edward

    2008-09-15

    It has recently been shown that a stationary, asymptotically flat vacuum black hole in five space-time dimensions with two commuting axial symmetries must have an event horizon with either a spherical, ring or lens-space topology. In this paper, we study the third possibility, a so-called black lens with L(n,1) horizon topology. Using the inverse scattering method, we construct a black-lens solution with the simplest possible rod structure, and possessing a single asymptotic angular momentum. Its properties are then analyzed; in particular, it is shown that there must either be a conical singularity or a naked curvature singularity present in the space-time.

  1. Neutrino Majorana Mass from Black Hole

    E-Print Network [OSTI]

    Yosuke Uehara

    2002-05-25

    We propose a new mechanism to generate the neutrino Majorana mass in TeV-scale gravity models. The black hole violates all non-gauged symmetries and can become the origin of lepton number violating processes. The fluctuation of higher-dimensional spacetime can result in the production of a black hole, which emits 2 neutrinos. If neutrinos are Majorana particles, this process is equivalent to the free propagation of a neutrino with the insertion of the black hole. From this fact, we derive the neutrino Majorana mass. The result is completely consistent with the recently observed evidence of neutrinoless double beta decay. And the obtained neutrino Majorana mass satisfies the constraint from the density of the neutrino dark matter, which affects the cosmic structure formation. Furthermore, we can explain the ultrahigh energy cosmic rays by the Z-burst scenario with it.

  2. Numerical Analysis of Black Hole Evaporation

    E-Print Network [OSTI]

    Tsvi Piran; Andrew Strominger

    1993-04-28

    Black hole formation/evaporation in two-dimensional dilaton gravity can be described, in the limit where the number $N$ of matter fields becomes large, by a set of second-order partial differential equations. In this paper we solve these equations numerically. It is shown that, contrary to some previous suggestions, black holes evaporate completely a finite time after formation. A boundary condition is required to evolve the system beyond the naked singularity at the evaporation endpoint. It is argued that this may be naturally chosen so as to restore the system to the vacuum. The analysis also applies to the low-energy scattering of $S$-wave fermions by four-dimensional extremal, magnetic, dilatonic black holes.

  3. Black Hole Thermodynamics in Modified Gravity

    E-Print Network [OSTI]

    Jonas R. Mureika; John W. Moffat; Mir Faizal

    2015-03-03

    We analyze the thermodynamics of a non-rotating and rotating black hole in a modified theory of gravity that includes scalar and vector modifications to general relativity, which results in a modified gravitational constant $G = G_N(1+\\alpha)$ and a new gravitational charge $Q = \\sqrt{\\alpha G_N}M$. The influence of the parameter $\\alpha$ alters the non-rotating black hole's lifetime, temperature and entropy profiles from the standard Schwarzschild case. The thermodynamics of a rotating black hole is analyzed and it is shown to possess stable, cold remnants. The thermodynamic properties of a vacuum solution regular at $r=0$ are investigated and the solution without a horizon called a "gray hole" is not expected to possess an information loss problem.

  4. No Supermassive Black Hole in M33?

    E-Print Network [OSTI]

    David Merritt; Laura Ferrarese; Charles L. Joseph

    2001-07-20

    We analyze optical long-slit spectroscopy of the nucleus of M33 obtained from the Space Telescope Imaging Spectrograph aboard the Hubble Space Telescope. Rather than the steep rise expected within the radius of influence of a supermassive black hole, the velocity dispersion drops significantly within the inner parsec. Dynamical modelling yields an estimated upper limit of 3000 solar masses for the mass of a central compact object. This upper limit is however consistent within the uncertainties with the mass predicted by the M-sigma relation, which is between 2000 and 20,000 solar masses. We therefore can not conclude that the presence of a massive black hole in the nucleus of M33 would require a different formation mechanism from that of the black holes detected in galaxies with more luminous bulges.

  5. Dynamics of galaxy cores and supermassive black holes

    E-Print Network [OSTI]

    David Merritt

    2006-05-02

    Recent work on the dynamical evolution of galactic nuclei containing supermassive black holes is reviewed. Topics include galaxy structural properties; collisionless and collisional equilibria; loss-cone dynamics; and dynamics of binary and multiple supermassive black holes.

  6. Black hole Meissner effect and Blandford-Znajek jets

    E-Print Network [OSTI]

    Penna, Robert

    Spinning black holes tend to expel magnetic fields. In this way they are similar to superconductors. It has been a persistent concern that this black hole “Meissner effect” could quench jet power at high spins. This would ...

  7. Failure to Find Proboscis Conditioning in One-Day Old Africanized Honey Bees (Apis Mellifera L,) and in Adult Uru§u. Honey bees (Melipona Scutellaris)

    E-Print Network [OSTI]

    Abramson, Charles I; Aquino, Italo S; Stone, Sherrill M

    1999-01-01

    in one day old Africanized bees and adult Uru^u wereand before that day old honey bees and adult Urugu do indeedin day old Africanized honey bees and adult stingless bees.

  8. CHARYBDIS: A Black Hole Event Generator

    E-Print Network [OSTI]

    C. M. Harris; P. Richardson; B. R. Webber

    2003-07-29

    CHARYBDIS is an event generator which simulates the production and decay of miniature black holes at hadronic colliders as might be possible in certain extra dimension models. It interfaces via the Les Houches accord to general purpose Monte Carlo programs like HERWIG and PYTHIA which then perform the parton evolution and hadronization. The event generator includes the extra-dimensional `grey-body' effects as well as the change in the temperature of the black hole as the decay progresses. Various options for modelling the Planck-scale terminal decay are provided.

  9. Virtual Black Holes in Hyperbolic Metamaterials

    E-Print Network [OSTI]

    Igor I. Smolyaninov

    2011-01-24

    Optical space in electromagnetic metamaterials may be engineered to emulate various exotic space-time geometries. However, these metamaterial models are limited in many respects. It is believed that real physical space-time strongly fluctuates on the Planck scale. These fluctuations are usually described as virtual black holes. Static metamaterial models introduced so far do not exhibit similar behavior. Here we demonstrate that thermal fluctuations of optical space in hyperbolic metamaterials lead to creation of virtual electromagnetic black holes. This effect is very large if the dielectric component of the metamaterial exhibits critical opalescence.

  10. Vacuum polarization for lukewarm black holes

    E-Print Network [OSTI]

    Elizabeth Winstanley; Phil M. Young

    2007-12-20

    We compute the renormalized expectation value of the square of a quantum scalar field on a Reissner-Nordstrom-de Sitter black hole in which the temperatures of the event and cosmological horizons are equal (`lukewarm' black hole). Our numerical calculations for a thermal state at the same temperature as the two horizons indicate that this renormalized expectation value is regular on both the event and cosmological horizons. We are able to show analytically, using an approximation for the field modes near the horizons, that this is indeed the case.

  11. Thermal Gravitational Waves from Primordial Black Holes

    E-Print Network [OSTI]

    C. Sivaram; Kenath Arun

    2010-05-19

    Thermal gravitational waves can be generated in various sources such as, in the cores of stars, white dwarfs and neutron stars due to the fermion collisions in the dense degenerate Fermi gas. Such high frequency thermal gravitational waves can also be produced during the collisions in a gamma ray burst or during the final stages of the evaporation of primordial black holes. Here we estimate the thermal gravitational waves from primordial black holes and estimate the integrated energy of the gravitational wave emission over the entire volume of the universe and over Hubble time. We also estimate the gravitational wave flux from gamma ray bursts and jets.

  12. Thermal stability of radiant black holes

    E-Print Network [OSTI]

    Parthasarathi Majumdar

    2006-04-06

    Beginning with a brief sketch of the derivation of Hawking's theorem of horizon area increase, based on the Raychaudhuri equation, we go on to discuss the issue as to whether generic black holes, undergoing Hawking radiation, can ever remain in stable thermal equilibrium with that radiation. We derive a universal criterion for such a stability, which relates the black hole mass and microcanonical entropy, both of which are well-defined within the context of the Isolated Horizon, and in principle calculable within Loop Quantum Gravity. The criterion is argued to hold even when thermal fluctuations of electric charge are considered, within a {\\it grand} canonical ensemble.

  13. Magnetized black hole as a gravitational lens

    E-Print Network [OSTI]

    R. A. Konoplya

    2006-11-19

    We use the Ernst-Schwarzschild solution for a black hole immersed in a uniform magnetic field to estimate corrections to the bending angle and time delay due-to presence of weak magnetic fields in galaxies and between galaxies, and also due-to influence of strong magnetic field near supermassive black holes. The magnetic field creates a kind of confinement in space, that leads to increasing of the bending angle and time delay for a ray of light propagating in the equatorial plane.

  14. Entropy and Area of Black Holes in Loop Quantum Gravity

    E-Print Network [OSTI]

    I. B. Khriplovich

    2002-03-31

    Simple arguments related to the entropy of black holes strongly constrain the spectrum of the area operator for a Schwarzschild black hole in loop quantum gravity. In particular, this spectrum is fixed completely by the assumption that the black hole entropy is maximum. Within the approach discussed, one arrives in loop quantum gravity at a quantization rule with integer quantum numbers $n$ for the entropy and area of a black hole.

  15. UofT Wireless Network BlackBerry 6 Setup

    E-Print Network [OSTI]

    UofT Wireless Network BlackBerry 6 Setup Note:theseinstructionsweretestedonaBlackBerryBold9700,OS6-4357,help.desk@utoronto.ca). UofT Wireless Network BlackBerry 10 Setup Note: these instructions were tested on a BlackBerry Q10. 1. Before you can use the UofT wireless network, you must verify your UTORid (you

  16. SEARCH FOR SUPERMASSIVE BLACK HOLE BINARIES IN THE SLOAN DIGITAL...

    Office of Scientific and Technical Information (OSTI)

    ASTROPHYSICS; BLACK HOLES; COMPARATIVE EVALUATIONS; CORRELATIONS; COSMOLOGY; GALAXIES; GALAXY NUCLEI; NONLUMINOUS MATTER; OSCILLATIONS; QUASARS; VELOCITY Word Cloud More Like This...

  17. Advertising Stigmatas: The Evolution of Advertising in American Poetic Culture

    E-Print Network [OSTI]

    Spies, Elizabeth Jean

    2010-01-01

    artificial theatricality of the American home and housewife became blended, amalgamated with the vision

  18. A Gradual Reawakening: Broadacre City and a New American Agrarianism

    E-Print Network [OSTI]

    Wise, Ella

    2013-01-01

    Green Development, and Renewable Energy. 2nd ed. AmericanCritical Agrarianism. ” Renewable Agriculture and Food

  19. Ethanol Pathways in the 2050 North American Transportation Futures Study

    SciTech Connect (OSTI)

    2009-01-18

    A paper discussing the various ethanol pathways in the 2050 North American Transportation Futures Study

  20. American Journal of Science and TechnologyAmerican Journal of Science and TechnologyAmerican Journal of Science and TechnologyAmerican Journal of Science and Technology 2014; 1(4): 168-181

    E-Print Network [OSTI]

    Grujicic, Mica

    American Journal of Science and TechnologyAmerican Journal of Science and TechnologyAmerican Journal of Science and TechnologyAmerican Journal of Science and Technology 2014; 1(4): 168-181 Published online August 30, 2014 (http://www.aascit.org/journal/ajst) Keywords Injection Over-Molding, Polymer

  1. EIS-0468: American Centrifuge Plant in Piketon, OH | Department...

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

    EIS-0468: Final Environmental Impact Statement Proposed American Centrifuge Plant in Piketon, Ohio Pike County, Ohio...

  2. Location and Geology Fig 1. The Macasty black shale

    E-Print Network [OSTI]

    to the chondritic uniform reservoir (CHUR; black line) and the depleted mantle (purple line). The parameters of CHUR by calcite. Fig. 5. Pyritized fracture Fig. 6. Massive black shale Fig. 7. Graptolite in black shale Fig. 8 shale, - Measure the concentrations of major, minor and trace elements including organic carbon

  3. Emission of scalar particles from cylindrical black holes

    E-Print Network [OSTI]

    H. Gohar; K. Saifullah

    2011-09-27

    We study quantum tunneling of scalar particles from black strings. For this purpose we apply WKB approximation and Hamilton-Jacobi method to solve the Klein-Gordon equation for outgoing trajectories. We find the tunneling probability of outgoing charged and uncharged scalars from the event horizon of black strings, and hence the Hawking temperature for these black configurations.

  4. The Role of Primordial Kicks on Black Hole Merger Rates

    E-Print Network [OSTI]

    Miroslav Micic; Tom Abel; Steinn Sigurdsson

    2006-09-06

    Primordial stars are likely to be very massive $\\geq30\\Msun$, form in isolation, and will likely leave black holes as remnants in the centers of their host dark matter halos in the mass range $10^{6}-10^{10}\\Ms$. Such early black holes, at redshifts z$\\gtsim10$, could be the seed black holes for the many supermassive black holes found in galaxies in the local universe. If they exist, their mergers with nearby supermassive black holes may be a prime signal for long wavelength gravitational wave detectors. We simulate formation of black holes in the center of high redshift dark matter halos and explore implications of initial natal kick velocities conjectured by some formation models. The central concentration of early black holes in present day galaxies is reduced if they are born even with moderate kicks of tens of km/s. The modest kicks allow the black holes to leave their parent halo, which consequently leads to dynamical friction being less effective on the lower mass black holes as compared to those still embedded in their parent halos. Therefore, merger rates may be reduced by more than an order of magnitude. Using analytical and illustrative cosmological N--body simulations we quantify the role of natal kicks of black holes formed from massive metal free stars on their merger rates with supermassive black holes in present day galaxies. Our results also apply to black holes ejected by the gravitational slingshot mechanism.

  5. Charged fermions tunneling from accelerating and rotating black holes

    SciTech Connect (OSTI)

    Rehman, Mudassar; Saifullah, K., E-mail: mudassir051@yahoo.com, E-mail: saifullah@qau.edu.pk [Department of Mathematics, Quaid-i-Azam University, Islamabad (Pakistan)

    2011-03-01

    We study Hawking radiation of charged fermions from accelerating and rotating black holes with electric and magnetic charges. We calculate the tunneling probabilities of incoming and outgoing fermionic particles and find the Hawking temperature of these black holes. We also provide an explicit expression of the classical action for the massive and massless particles in the background of these black holes.

  6. Being the partial proceedings of a conference co-organized by the South-African Regional Poverty Network,

    E-Print Network [OSTI]

    Boyer, Edmond

    Being the partial proceedings of a conference co-organized by the South-African Regional Poverty, Southern African governments have identified the eradication or alleviation of poverty as a key objective of developmental programmes. In spite of these repeated articulations and ongoing efforts poverty levels have

  7. MIKE Central African Pilot Project Report 2, draft 21 August 2001 27 ANNEX 1: Field data forms and field form instructions

    E-Print Network [OSTI]

    Thomas, Len

    MIKE Central African Pilot Project Report 2, draft 21 August 2001 27 ANNEX 1: Field data forms: ELEPHANT POPULATION FORM #12;MIKE Central African Pilot Project Report 2, draft 21 August 2001 28 1. MIKE deplacement Recce Transect Other #12;MIKE Central African Pilot Project Report 2, draft 21 August 2001 29 16

  8. Detroit to Durban: Black Workers' Common Struggle; Southern Africa/Black America: Same Struggles, Same Fight

    E-Print Network [OSTI]

    Philips, John

    1978-01-01

    DETROIT TO DURBAN: BlACK \\\\OOKERS CCM1>N STRUGGLE by Blackearliest parrphlet is Detroit to Durban . Although publishedstrikes of early 1973 and the Detroit riots of 1967 is a bit

  9. Brief review on higher spin black holes

    E-Print Network [OSTI]

    Alfredo Perez; David Tempo; Ricardo Troncoso

    2014-05-12

    We review some relevant results in the context of higher spin black holes in three-dimensional spacetimes, focusing on their asymptotic behaviour and thermodynamic properties. For simplicity, we mainly discuss the case of gravity nonminimally coupled to spin-3 fields, being nonperturbatively described by a Chern-Simons theory of two independent sl(3,R) gauge fields. Since the analysis is particularly transparent in the Hamiltonian formalism, we provide a concise discussion of their basic aspects in this context; and as a warming up exercise, we briefly analyze the asymptotic behaviour of pure gravity, as well as the BTZ black hole and its thermodynamics, exclusively in terms of gauge fields. The discussion is then extended to the case of black holes endowed with higher spin fields, briefly signaling the agreements and discrepancies found through different approaches. We conclude explaining how the puzzles become resolved once the fall off of the fields is precisely specified and extended to include chemical potentials, in a way that it is compatible with the asymptotic symmetries. Hence, the global charges become completely identified in an unambiguous way, so that different sets of asymptotic conditions turn out to contain inequivalent classes of black hole solutions being characterized by a different set of global charges.

  10. Quantum Chaos and the Black Body Radiation

    E-Print Network [OSTI]

    Giulio Casati

    2000-11-16

    We discuss a mechanical model which mimics the main features of the radiation matter interaction in the black body problem. The pure classical dynamical evolution, with a simple discretization of the action variables, leads to the Stefan- Boltzmann law and to the Planck distribution without any additional statistical assumption.

  11. Scalar Hairy Black Holes in General Dimensions

    E-Print Network [OSTI]

    Xing-Hui Feng; H. Lu; Qiang Wen

    2014-01-13

    We obtain a class of asymptotic flat or (A)dS hairy black holes in D-dimensional Einstein gravity coupled to a scalar with certain scalar potential. For a given mass, the theory admits both the Schwarzschild-Tangherlini and the hairy black holes with different temperature and entropy, but satisfying the same first law of thermodynamics. For some appropriate choice of parameters, the scalar potential can be expressed in terms of a super-potential and it can arise in gauged supergravities. In this case, the solutions develop a naked curvature singularity and become the spherical domain walls. Uplifting the solutions to D=11 or 10, we obtain solutions that can be viewed as spherical M-branes or D3-branes. We also add electric charges to these hairy black holes. All these solutions contain no scalar charges in that the first law of thermodynamics are unmodified. We also try to construct new AdS black holes carrying scalar charges, with some moderate success in that the charges are pre-fixed in the theory instead of being some continuous integration constants.

  12. Scalar Hairy Black Holes in General Dimensions

    E-Print Network [OSTI]

    Feng, Xing-Hui; Wen, Qiang

    2013-01-01

    We obtain a class of asymptotic flat or (A)dS hairy black holes in D-dimensional Einstein gravity coupled to a scalar with certain scalar potential. For a given mass, the theory admits both the Schwarzschild-Tangherlini and the hairy black holes with different temperature and entropy, but satisfying the same first law of thermodynamics. For some appropriate choice of parameters, the scalar potential can be expressed in terms of a super-potential and it can arise in gauged supergravities. In this case, the solutions develop a naked curvature singularity and become the spherical domain walls. Uplifting the solutions to D=11 or 10, we obtain solutions that can be viewed as spherical M-branes or D3-branes. We also add electric charges to these hairy black holes. All these solutions contain no scalar charges in that the first law of thermodynamics are unmodified. We also try to construct new AdS black holes carrying scalar charges, with some moderate success in that the charges are pre-fixed in the theory instead ...

  13. Bubbling supertubes and foaming black holes

    SciTech Connect (OSTI)

    Bena, Iosif; Warner, Nicholas P.

    2006-09-15

    We construct smooth BPS three-charge geometries that resolve the zero-entropy singularity of the U(1)xU(1) invariant black ring. This singularity is resolved by a geometric transition that results in geometries without any branes sources or singularities but with nontrivial topology. These geometries are both ground states of the black ring, and nontrivial microstates of the D1-D5-P system. We also find the form of the geometries that result from the geometric transition of N zero-entropy black rings, and argue that, in general, such geometries give a very large number of smooth bound-state three-charge solutions, parametrized by 6N functions. The generic microstate solution is specified by a four-dimensional hyper-Kaehler geometry of a certain signature, and contains a 'foam' of nontrivial two-spheres. We conjecture that these geometries will account for a significant part of the entropy of the D1-D5-P black hole, and that Mathur's conjecture might reduce to counting certain hyper-Kaehler manifolds.

  14. Schwarzschild black hole in dark energy background

    E-Print Network [OSTI]

    Ngangbam Ishwarchandra; Ng. Ibohal; K. Yugindro Singh

    2014-09-27

    In this paper we present an exact solution of Einstein's field equations describing the Schwarzschild black hole in dark energy background. It is also regarded as an embedded solution that the Schwarzschild black hole is embedded into the dark energy space producing Schwarzschild-dark energy black hole. It is found that the space-time geometry of Schwarzschild-dark energy solution is non-vacuum Petrov type $D$ in the classification of space-times. We study the energy conditions (like weak, strong and dominant conditions) for the energy-momentum tensor of the Schwarzschild-dark energy solution. We also find that the energy-momentum tensor of the Schwarzschild-dark energy solution violates the strong energy condition due to the negative pressure leading to a repulsive gravitational force of the matter field in the space-time. It is shown that the time-like vector field for an observer in the Schwarzschild-dark energy space is expanding, accelerating, shearing and non-rotating. We investigate the surface gravity and the area of the horizons for the Schwarzschild-dark energy black hole.

  15. Pulsed combustion process for black liquor gasification

    SciTech Connect (OSTI)

    Durai-Swamy, K.; Mansour, M.N.; Warren, D.W.

    1991-02-01

    The objective of this project is to test an energy efficient, innovative black liquor recovery system on an industrial scale. In the MTCI recovery process, black liquor is sprayed directly onto a bed of sodium carbonate solids which is fluidized by steam. Direct contact of the black liquor with hot bed solids promotes high rates of heating and pyrolysis. Residual carbon, which forms as a deposit on the particle surface, is then gasified by reaction with steam. Heat is supplied from pulse combustor resonance tubes which are immersed within the fluid bed. A portion of the gasifier product gas is returned to the pulse combustors to provide the energy requirements of the reactor. Oxidized sulfur species are partially reduced by reaction with the gasifier products, principally carbon monoxide and hydrogen. The reduced sulfur decomposed to solid sodium carbonate and gaseous hydrogen sulfide (H{sub 2}S). Sodium values are recovered by discharging a dry sodium carbonate product from the gasifier. MTCI's indirectly heated gasification technology for black liquor recovery also relies on the scrubbing of H{sub 2}S for product gases to regenerate green liquor for reuse in the mill circuit. Due to concerns relative to the efficiency of sulfur recovery in the MTCI integrated process, an experimental investigation was undertaken to establish performance and design data for this portion of the system.

  16. Six Sigma Black Belts Fight For Quality

    E-Print Network [OSTI]

    Vardeman, Stephen B.

    Six Sigma Black Belts Fight For Quality Ron Scott Ross Finnestad Rodney Kalsow IE 361 mini-paper 9/22/00 #12;Six Sigma is a breakthrough management strategy that is revolutionizing the world's top corporations. So what is Six Sigma? "It is a business process that allows companies to drastically improve

  17. Lower-Dimensional Black Hole Chemistry

    E-Print Network [OSTI]

    Antonia M. Frassino; Robert B. Mann; Jonas R. Mureika

    2015-09-18

    The connection between black hole thermodynamics and chemistry is extended to the lower-dimensional regime by considering the rotating and charged BTZ metric in the $(2+1)$-D and a $(1+1)$-D limits of Einstein gravity. The Smarr relation is naturally upheld in both BTZ cases, where those with $Q \

  18. Strains and Jets in Black Hole Fields

    E-Print Network [OSTI]

    D. Bini; F. de Felice; A. Geralico

    2007-12-14

    We study the behaviour of an initially spherical bunch of particles emitted along trajectories parallel to the symmetry axis of a Kerr black hole. We show that, under suitable conditions, curvature and inertial strains compete to generate jet-like structures.

  19. Area products for black hole horizons

    E-Print Network [OSTI]

    Visser, Matt

    2013-01-01

    Area products for multi-horizon black holes often have intriguing properties, and are often independent of the mass of the black hole (depending only on various charges, angular momenta, and moduli). Such products are often formulated in terms of the areas of inner (Cauchy) horizons and event horizons, and often include the effects of unphysical "virtual'" horizons. For the Schwarzschild-de Sitter [Kottler] black hole in (3+1) dimensions it is shown by explicit exact calculation that the product of event horizon area and cosmological horizon area is not mass independent. (Including the effect of the third "virtual" horizon does not improve the situation.) Similarly, in the Reissner-Nordstrom-anti-de Sitter black hole in (3+1) dimensions the product of inner (Cauchy) horizon area and event horizon area is calculated (perturbatively), and is shown to be not mass independent. That is, the mass-independence of the product of physical horizon areas is not generic. In the generic situation, whenever the quasi-local...

  20. Report Review Checklist a. Ink is Black

    E-Print Network [OSTI]

    Report Review Checklist 1. General a. Ink is Black b. Margins Left & Top 1.5"; Right & Bottom 1" c. Page Numbers 1. Arabic numerals upper right corner within body of paper 2. Page Numbers: Lower case roman numerals for front matter. d. Spacing: Double spaced throughout report. e. Typeface: Arial, Times

  1. Chasing the illusive American dream: an historical analysis of Mexican-American education, employment, and culture 

    E-Print Network [OSTI]

    Ham, Arwen Eugene

    2013-02-22

    in partial fulfil/ment of the requirements of the UNIVERSITY UNDERGRADUATE RESEARCH FELLOWS April 2004 Major: Psychology CHASING THE ILLUSIVE AMERICAN DREAM: AN HISTORICAL ANALYSIS OF MEXICAN-AMERICAN EDUCATION, EMPLOYMENT, AND CULTURE A Senior Honors... Approved as to style and content by: s~= Sara Alpe (Fellows Advisor) April 2004 Major: Psychology ABSTRACT Chasing the Illusive American Dream: An Historical Analysis of Mexican-Atnerican Education, Employment, and Culture. (April 2004) Arwen...

  2. American” Pictures and (Trans-)National Iconographies: Mapping Interpictorial Clusters in American Studies

    E-Print Network [OSTI]

    Hebel, Udo J.

    2015-01-01

    Knutson. Norman Rockwell: Pictures for the American People.Photographic Memories: Private Pictures, Public Images, andP. 2003. Mitchell, W. J. T. Picture Theory. Chicago: U of

  3. Trumpet-puncture initial data for black holes

    SciTech Connect (OSTI)

    Immerman, Jason D.; Baumgarte, Thomas W.

    2009-09-15

    We propose a new approach, based on the puncture method, to construct black hole initial data in the so-called trumpet geometry, i.e. on slices that asymptote to a limiting surface of nonzero areal radius. Our approach is easy to implement numerically and, at least for nonspinning black holes, does not require any internal boundary conditions. We present numerical results, obtained with a uniform-grid finite-difference code, for boosted black holes and binary black holes. We also comment on generalizations of this method for spinning black holes.

  4. Depression in Chinese American Immigrant Adults: An Exploration of Culturally Based Manifestations, Structure, and Measurement

    E-Print Network [OSTI]

    Wong, Rose

    2009-01-01

    1 Study 1: Depression in Chinese American immigrants: Social52 Study 3: The Chinese American Depression Scale (CADS-9):structure of depression in Chinese American immigrants: An

  5. Review: Still Struggling for Equality: American Public Library Services with Minorities by Plummer Alston Jones, Jr

    E-Print Network [OSTI]

    Lu, Yang

    2005-01-01

    1991). American public library service to the immigrantEquality: American Public Library Services with Minoritiesfor the American public library enterprise. Libraries,

  6. The North American Free Trade Agreement: A Legal Analysis of Effects and Opportunities

    E-Print Network [OSTI]

    Steinberg, Richard

    1994-01-01

    Proposed North American Free Trade Agreement,' August 12,Proposed North American Free Trade Agreement," August 12,THE NORTH AMERICAN FREE TRADE AGREEMENT: A LEGAL ANALYSIS OF

  7. The American ballpark : a structural perspective

    E-Print Network [OSTI]

    Sweeney, Raymond W. (Raymond Winfield)

    2008-01-01

    A recent boom in ballpark construction in the last decade has brought great attention to the design of these stadiums. The purpose of this thesis is to examine the history of the American ballpark through the 20th century, ...

  8. American Process—Alpena Biorefinery Lessons

    Broader source: Energy.gov [DOE]

    Breakout Session 1D—Building Market Confidence and Understanding I: Integrated Biorefinery (Lessons Learned and Best Practices) American Process—Alpena Biorefinery Lessons Theodora Retsina, Chief Executive Officer, America Process Inc.

  9. EIS-0468: American Centrifuge Plant, Piketon, Ohio

    Broader source: Energy.gov [DOE]

    This EIS evaluates the environmental impacts of construction, operation, and decommissioning of the American Centrifuge Plant (ACP), located on DOE reservation in Piketon, Ohio. (DOE adopted this EIS issued by the Nuclear Regulatory Commission on 02/16/2011.)

  10. Sentimental Poetry of the American Civil War

    E-Print Network [OSTI]

    Trapp, Marjorie Jane

    2010-01-01

    Company, 1866. Devon, W. A. War Lyrics. New York: SinclairHickey, ed. Ballads of the War. New York: J. Robins, 1862.Eggleston, G. C, ed. American War Ballads and Lyrics. New

  11. Transforming the American Economy Through Innovation

    Broader source: Energy.gov [DOE]

    Secretary Chu joins Vice President Joe Biden as he details the role the Recovery Act has played in funding innovation that will help build a foundation for a more robust and competitive American...

  12. The Courts in American Public Culture

    E-Print Network [OSTI]

    Silbey, Susan S.

    In American public imagination, courts are powerful but also impotent. They are guardians of citizens' rights but also agents of corporate wealth; simultaneously the least dangerous branch and the ultimate arbiters of ...

  13. Organization of Chinese Americans Federal Leadership Training

    Broader source: Energy.gov [DOE]

    The Organization of Chinese Americans (OCA) will hold its Federal Leadership Training (FLT) on July 18-19, 2013, during its National Convention in Washington, D.C.  The theme of this year’s...

  14. TRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY

    E-Print Network [OSTI]

    Bigelow, Stephen

    of New York PSC-CUNY Research Award Program. The second author was partially supported by NSF Grant # DMS-9971833. c 2003 American Mathematical Society 1233 License or copyright restrictions may apply

  15. ORISE: College of American Pathologists renews accreditation...

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

    College of American Pathologists renews accreditation of ORISE beryllium laboratory Lab is one of only four in U.S. certified to test for sensitization to beryllium FOR IMMEDIATE...

  16. PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY

    E-Print Network [OSTI]

    Lee, Kyu-Hwan J.

    PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY Volume 142, Number 7, July 2014, Pages 2291­2301.99.16.10. License or copyright restrictions may apply to redistribution; see http://www.ams

  17. American Evaluation Association Guiding Principles for Evaluators

    SciTech Connect (OSTI)

    None

    2009-01-18

    Five principles developed by American Evaluation Associ intended to guide professional practice of evaluators & to inform evaluation clients and the general public about principles they can expect to be upheld by professional evaluators.

  18. Acoustic clouds: standing sound waves around a black hole analogue

    E-Print Network [OSTI]

    Carolina L. Benone; Luis C. B. Crispino; Carlos Herdeiro; Eugen Radu

    2015-01-28

    Under certain conditions sound waves in fluids experience an acoustic horizon with analogue properties to those of a black hole event horizon. In particular, a draining bathtub-like model can give rise to a rotating acoustic horizon and hence a rotating black hole (acoustic) analogue. We show that sound waves, when enclosed in a cylindrical cavity, can form stationary waves around such rotating acoustic black holes. These acoustic perturbations display similar properties to the scalar clouds that have been studied around Kerr and Kerr-Newman black holes; thus they are dubbed acoustic clouds. We make the comparison between scalar clouds around Kerr black holes and acoustic clouds around the draining bathtub explicit by studying also the properties of scalar clouds around Kerr black holes enclosed in a cavity. Acoustic clouds suggest the possibility of testing, experimentally, the existence and properties of black hole clouds, using analog models.

  19. Thermodynamic Relations for Kiselev and Dilaton Black Hole

    E-Print Network [OSTI]

    Bushra Majeed; Mubasher Jamil; Parthapratim Pradhan

    2015-08-24

    We investigate the thermodynamics and phase transition for Kiselev black hole and dilaton black hole. Speci?cally we consider Reissner Nordstrom black hole surrounded by radiation and dust, and Schwarzschild black hole surrounded by quintessence, as special cases of Kiselev solution. We have calculated the products relating the surface gravities, surface temperatures, Komar energies, areas, entropies, horizon radii and the irreducible masses at the Cauchy and the event horizons. It is observed that the product of surface gravities, surface temperature product and product of Komar energies at the horizons are not universal quantities for the Kiselev solutions while products of areas and entropies at both the horizons are independent of mass of the above mentioned black holes (except for Schwarzschild black hole surrounded by quintessence). For charged dilaton black hole, all the products vanish. First law of thermodynamics is also veri?ed for Kiselev solutions. Heat capacities are calculated and phase transitions are observed, under certain conditions.

  20. Quantization of black holes by analogy with hydrogen atoms

    E-Print Network [OSTI]

    Chang Liu; Yan-Gang Miao; Yu-Mei Wu; Yu-Hao Zhang

    2015-11-16

    We suggest a proposal of quantization for black holes that is based on an analogy between a black hole and a hydrogen atom. A self-regular Schwarzschild-AdS black hole is investigated, where the mass density of the extreme black hole is given by the probability density of the ground state of hydrogen atoms and the mass densities of non-extreme black holes are chosen to be the probability densities of excited states with no angular momenta. Consequently, it is logical to accept quantization of mean radii of hydrogen atoms as that of black hole horizons. In this way, quantization of total black hole masses is deduced. Furthermore, the quantum hoop conjecture and the Correspondence Principle are discussed.

  1. Quantization of black holes by analogy with hydrogen atoms

    E-Print Network [OSTI]

    Liu, Chang; Wu, Yu-Mei; Zhang, Yu-Hao

    2015-01-01

    We suggest a proposal of quantization for black holes that is based on an analogy between a black hole and a hydrogen atom. A self-regular Schwarzschild-AdS black hole is investigated, where the mass density of the extreme black hole is given by the probability density of the ground state of hydrogen atoms and the mass densities of non-extreme black holes are chosen to be the probability densities of excited states with no angular momenta. Consequently, it is logical to accept quantization of mean radii of hydrogen atoms as that of black hole horizons. In this way, quantization of total black hole masses is deduced. Furthermore, the quantum hoop conjecture and the Correspondence Principle are discussed.

  2. Quantization of black holes by analogy with hydrogen atoms

    E-Print Network [OSTI]

    Chang Liu; Yan-Gang Miao; Yu-Mei Wu; Yu-Hao Zhang

    2015-11-23

    We suggest a proposal of quantization for black holes that is based on an analogy between a black hole and a hydrogen atom. A self-regular Schwarzschild-AdS black hole is investigated, where the mass density of the extreme black hole is given by the probability density of the ground state of hydrogen atoms and the mass densities of non-extreme black holes are chosen to be the probability densities of excited states with no angular momenta. Consequently, it is logical to accept quantization of mean radii of hydrogen atoms as that of black hole horizons. In this way, quantization of total black hole masses is deduced. Furthermore, the quantum hoop conjecture and the Correspondence Principle are discussed.

  3. Energy Extraction from Spinning Black Holes via Relativistic Jets

    E-Print Network [OSTI]

    Ramesh Narayan; Jeffrey E. McClintock; Alexander Tchekhovskoy

    2013-03-12

    It has for long been an article of faith among astrophysicists that black hole spin energy is responsible for powering the relativistic jets seen in accreting black holes. Two recent advances have strengthened the case. First, numerical general relativistic magnetohydrodynamic simulations of accreting spinning black holes show that relativistic jets form spontaneously. In at least some cases, there is unambiguous evidence that much of the jet energy comes from the black hole, not the disk. Second, spin parameters of a number of accreting stellar-mass black holes have been measured. For ballistic jets from these systems, it is found that the radio luminosity of the jet correlates with the spin of the black hole. This suggests a causal relationship between black hole spin and jet power, presumably due to a generalized Penrose process.

  4. The Role of Primordial Kicks on Black Hole Merger Rates

    E-Print Network [OSTI]

    Miroslav Micic; Tom Abel; Steinn Sigurdsson

    2006-09-15

    Primordial stars are likely to be very massive >30 Msun, form in isolation, and will likely leave black holes as remnants in the centers of their host dark matter halos. We expect primordial stars to form in halos in the mass range 10^6-10^10 Msun. Some of these early black holes, formed at redshifts z>10, could be the seed black hole for a significant fraction of the supermassive black holes found in galaxies in the local universe. If the black hole descendants of the primordial stars exist, their mergers with nearby supermassive black holes may be a prime candidate for long wavelength gravitational wave detectors. We simulate formation and evolution of dark matter halos in LambdaCDM universe. We seed high-redshift dark matter halos with early black holes, and explore the merger history of the host halos and the implications of black hole's kick velocities arising from their coalescence. The central concentration of low mass early black holes in present day galaxies is reduced if they experience even moderate kicks of tens of km/s. Even such modest kicks allow the black holes to leave their parent halo, which consequently leads to dynamical friction being less effective on the low mass black holes that were ejected, compared to those still embedded in their parent halos. Therefore, merger rates with central supermassive black holes in the largest halos may be reduced by more than an order of magnitude. Using analytical and illustrative cosmological N-body simulations, we quantify the role of kicks on the merger rates of black holes formed from massive metal free stars with supermassive black holes in present day galaxies.

  5. "American manufacturers are a cornerstone of the American economy and embody the best in American values. They enhance U.S. competitiveness

    E-Print Network [OSTI]

    "American manufacturers are a cornerstone of the American economy and embody the best in American." Manufacturing in America: a Comprehensive Strategy to Address the Challenges to U.S. Manufacturers January 16, 2004 #12;THE NETWORK-CENTRIC INNOVATION IMPERATIVE: How Manufacturers Work with Their Suppliers

  6. 222 Mesa Arts Building Irvine, California 92697-2775

    E-Print Network [OSTI]

    Al Faruque, Mohammad Abdullah

    Influence William Chapman Nyaho, with Louise Toppin in concert Friday, February 10 Flowers 9:00 AM Welcome:30 AM "The African American Concert Singer: San Francisco 1925-65, In Paradisium" Lecture Bill Doggett 10:00 AM The Black Composer in Opera Lecture Anthony Davis, University of California, San Diego 11

  7. Native American Support Programs Task Force Changing Winds: Service to Native American Students

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    and Communities in Montana Final Report of the MSU Native American Support Programs Task Force Submitted To Shelly Hogan #12;Native American Support Programs Task Force Contents EXECUTIVE SUMMARY TO STUDENT SUCCESS 12 FIGURE 6 WAYS TO ACHIEVE PROGRAM IMPROVEMENT 12 FIGURE 7 EMERGING THEMES: WHAT

  8. DESCRIPTIVE OVERVIEW AND ANALYSIS OF THE SOUTH AFRICAN CASE 4.1 Introduction

    E-Print Network [OSTI]

    Wolf, Aaron

    of the country. South African shores are washed by two ocean currents, which are fundamental drivers of the climate in the country. The cold Benguela Current flows northwards from the Antarctic along the west coast that is not conducive to precipitation. The warm Agulhas Current flows southwards from the tropics, bringing high levels

  9. 14.8 Marine Sediment Records of African Climate Change: Progress and Puzzles

    E-Print Network [OSTI]

    deMenocal, Peter B.

    knowledge of the magnitudes and rates of past ocean circulation and global climate changes, as well that the African continent was warm, wet, and well vegetated during much of the early Cenozoic and that large critical `ground truth' information documenting conditions in specific regions of Africa. Marine sediment

  10. Parallel adaptive origins of digestive RNases in Asian and African leaf monkeys

    E-Print Network [OSTI]

    Zhang, Jianzhi

    Parallel adaptive origins of digestive RNases in Asian and African leaf monkeys Jianzhi Zhang-directed mutagenesis show that the new genes acquired enhanced digestive efficiencies through parallel amino acid replacements driven by darwinian selection. They also lost a non-digestive function independently, under

  11. Arthur D. Harrison, the doyen of African limnol-ogy and studies of the Afrotropical Chironomidae,

    E-Print Network [OSTI]

    Cranston, Peter S.

    Arthur D. Harrison, the doyen of African limnol- ogy and studies of the Afrotropical Chironomidae, post-drought, including documenting Fish Hoek. Photo P. Cranston Arthur D. Harrison. Photo Helen James, died in Canada over 3 years ago with little or no posthumous scientific recognition. This piece

  12. GRAFT TRANSMISSION AND SYMPTOMOLOGY OF LIBERIBACTERS FROM SELECTED INDIGENOUS SOUTH AFRICAN

    E-Print Network [OSTI]

    GRAFT TRANSMISSION AND SYMPTOMOLOGY OF LIBERIBACTERS FROM SELECTED INDIGENOUS SOUTH AFRICAN MEMBERS PCR analysis. Contrary to citrus transmissions described above, all of the Laf- recipient trees Rutaceous hosts we hope to establish whether such a transmission event will have detrimental effects

  13. Sustainability Research Institute, Centre for Global Development and Centre for African Studies (LUCAS) Seminar Series

    E-Print Network [OSTI]

    Haase, Markus

    Sustainability Research Institute, Centre for Global Development and Centre for African Studies (LUCAS) Seminar Series Invite you to the second in the series on The Environment, Human Rights and Development Resource Politics and Advocacy Struggles in Zimbabwe: Encountering Power at Multiple Scales Sam

  14. Reprint draft October 8, 2003 Pliocene tephra correlations between East African

    E-Print Network [OSTI]

    deMenocal, Peter B.

    , University of Utah, Salt Lake City, UT 84112 Abstract A continuous record of Pliocene-Pleistocene East African volcanic tephra deposition has been developed from a marine sediment sequence at Ocean Drilling-Sea Drilling Project (DSDP) sites from the Gulf of Aden, nearly one thousand kilometers northeast of hominid

  15. Clustering South African Households Based on their Asset Status Using Latent Variable Models.

    E-Print Network [OSTI]

    Washington at Seattle, University of

    Clustering South African Households Based on their Asset Status Using Latent Variable Models into homogeneous groups based on their asset status. A model-based approach to clustering, based on latent variable and the models are combined to produce a hybrid model capable of handling mixed data types. Further, a mixture

  16. A revolution in ICT, the last hope for African Rural Communities' technology appropriation

    E-Print Network [OSTI]

    Blake, Edwin

    A revolution in ICT, the last hope for African Rural Communities' technology appropriation Gereon on the challenge of designing products suited to rural practices and conceptualizations in Southern Africa. To create a framework compatible with rural customs of information transfer and supportive of rural

  17. WEST AFRICAN DRUMMING, GEOGRAPHY, HISTORY, LANGUAGE, MULTICULTURALISM AND AT-RISK STUDENTS IN THE MUSIC CLASSROOM

    E-Print Network [OSTI]

    Bassett, Dylan A.

    2010-06-09

    Background……………………………………………………………………. 4 Literature Review…………………………………………………………….. 5 Chapter II: Traditional Music in Traditional and Modern West Africa: Drumming Styles of the Wolof in Senegal; Ga, Ewe, and Akan of Ghana; and Mande of Guinea... ……………………………………………….9 Commonalities in Various West African Drumming Styles…………. 9 Senegal: Traditional Drumming Styles……………………………… … 12 Ghana: Traditional Drumming Styles………………………………… ..18 Guinea: Traditional Drumming Styles………………………………… . 23 Traditional Music...

  18. CORRESPONDENCE Reply to: African dust and asthma in the Caribbean--medical

    E-Print Network [OSTI]

    Prospero, Joseph M.

    to African dust and to Barbados and the Caribbean. Rather, they cite much literature on the relationship over the oceans and their role in climate, a program that began in 1965 on Barbados and continues impact of climate variability on dust concentrations in Barbados trade winds. With the onset of long

  19. Sex differences and similarities in the neuroendocrine regulation of social behavior in an African cichlid fish,

    E-Print Network [OSTI]

    Hofmann, Hans A.

    Sex differences and similarities in the neuroendocrine regulation of social behavior in an African and within the social states or sexes. We aimed to determine sex-specific attributes of social status by comparing circulating sex steroid hormones and neural gene expression of sex steroid receptors in dominant

  20. Estimation of freshwater availability in the West African sub-continent using the SWAT hydrologic

    E-Print Network [OSTI]

    Estimation of freshwater availability in the West African sub-continent using the SWAT hydrologic availability is indispensable for water resources management at regional or national level. This information processes. The currently available estimates of freshwater availability by a few large international