Who is Hmong? Questions and Evidence from the U.S. Census

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Victoria Udalova

2006-01-01

Full Text Available This paper explores the boundaries of the Hmong community as measured by different categories in 2000 U.S. census data. Following careful assessment of detailed Census data, the authors conclude that theusual criterion used to identify a person in the data as Hmong is too narrow, and that a broader, more inclusive definition more accurately delineates the Hmong ethnic group. The authors propose that anyonewho reported in the Census that his or her race, ancestry, or language was Hmong should be included in the Hmong community. This more inclusive method provides evidence that the Hmong populationenumerated by the 2000 U.S. census was about 18% larger than the figure that is usually reported.

Caught Between Cultures: Hmong Parents in America’s Sibling Society

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Tamara L. Kaiser

2005-01-01

Full Text Available Based on a qualitative study of the Hmong Community in the Twin Cities of Minneapolis and St. Paul, this paper addresses the conflict between the traditionally hierarchical and patriarchal Hmong culture and those aspects of American culture that elevate freedom and equality over, not only patriarchy, but over hierarchy in general. Although this conflict has forced the Hmong community to change in some positive ways, it also creates great challenges for parents and their children. Distorted values of “freedom” and “equality,” promoted by much of American culture, compromise the ability of many Hmong to be effective parents. A comparison of traditional Hmong parenting with what author Robert Bly calls America’s “sibling society” demonstrates that both Hmong and mainstream families and society are hurt by a general rejection of authority and would greatly benefit from recognizing the value of hierarchy based on experience, genuine accomplishment and wisdom.

Migration of Hmong to Rochester, Minnesota: Life in the Midwest

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Cathleen Jo Faruque

2003-01-01

Full Text Available This study was designed to investigate one of the newest refugee groups to the Midwestern United States, the Hmong refugees from Laos, China, Vietnam and Thailand. This study broadly examines how multigenerational Hmong families are adjusting and adapting to life in Rochester, Minnesota. The following questions guided this study: (1 What effect does non-voluntary migration have on the acculturation levels as measured by cultural awareness and ethnic loyalty of the Hmong in Rochester, Minnesota? (2 How do the Hmong perceive their host Anglo culture? (3 How do the Hmong adjust to their host social system in the United States? (4 How much do Hmong learn about their new environment? (5 How do the Hmong retain traditions within in the United States?Qualitative interviewing through in-depth individual interviews and participant observation was the method of data collection. Participants were recruited through purposive sampling, volunteering, and snowball sampling techniques. Criteria for inclusion in this study were: 1 Being Hmong; 2 Residing in Rochester, Minnesota, and; 3 Being at least 13 years of age or older. Grounded theory methodology was the primary tool of data analysis.The findings clearly demonstrated that the Hmong subjects interviewed for this study showed a high degree of discrepancy between the acculturation levels based on age and country of origin from point of migration. This discrepancy has created an acculturation gap, which is related to the younger Hmong’s increased identification with the American culture and their decreased identification with their family’s culture of origin. This shift has created family difficulties and communication gaps between the generations.

Hmong Parents’ Perceptions on Instructional Strategies for Educating their Children with Disabilities

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Halee Vang

2005-01-01

Full Text Available This article reports how Hmong parents were involved in an educational research study to examine their views on a structured reading instruction protocol developed in English and then translated into Hmong for Hmong children identified with disabilities. Six Hmong female parents were interviewed using a semi-structured interview. The responses from the interviews revealed that Hmong parents of disabled children are not only very concerned about seeking education equity, but that they need more communication and knowledge about their children’s education. The research methodology revealed a process to engage Hmong parents in discussing their perceptions about schools and their relationships with schools as well as classroom instruction.

Hmong Parents’ Critical Reflections on Their Children’s Heritage Language Maintenance

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Terry Yang

2008-01-01

Full Text Available This study utilizes a qualitative method to explore the critical reflections of Hmong parents helping their children maintain their native language. Specifically, it examines parents’ thoughts, feelings and experiences related to Hmong language maintenance. Findings reveal that Hmong parents worry about their children losing their ability to speak their native language. They believe that maintaining the Hmong language provides advantages in achieving academic success, attaining careers, and continuing to serve as role models in the community. Parents stressed the need to use Hmong at home in order to help their children develop and maintain the language. They reported some successes in doing so, while acknowledging several challenges.

Commentary: Gender-based Violence among the (Hmong

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Jacques Lemoine

2012-01-01

Full Text Available Prepared for the Seminar on Cultural Factors in the Prevention and Promotion of Gender-Based Violence held at UNESCO Bangkok on 17-18 May 2012, this article presents the current state of the subject in the patrilineal, patrilocal and patriarchal (Hmong society.After delineating carefully (Hmong GBV through rape, marriage customs, domestic verbal and physical abuses and, in some cases, murder, the author investigates the roots of GBV in different directions: gender asymmetry and inequality; tribal culture and the clan system; the function of the bride price; women’s social mobility in the U.S. and values clashes with American values. After a thorough anthropological analysis, the author concludes that GBV has nothing to do with the clan system, the backbone of the tribal society, but rather involves a long-lasting borrowing of Chinese patterns from the (Hmong past in Imperial China, which could be amended. Gender inequality will hopefully regress if shame, a powerful means ofsocial control among the (Hmong, is used to deter GBV.

Phau Xyaum Nyeem Zaj Lus = Beginning Hmong Reader.

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Xiong, Ge

A collection of lessons for beginning reading instruction in Hmong includes 22 lessons on (1) natural resources (soil, water, rock and stone, trees, non-flowering fruit trees, and flowering fruit trees); (2) Hmong agricultural practices (planting vegetable gardens, choosing seeds, seed development, corn, cuttings, and spreading and standing…

Financial Management in Hmong Immigrant Families: Change and Adaptation

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Pa Nhia D. Yang

2008-01-01

Full Text Available This study examined family financial management in the Hmong community through the analysis of 11 in-depth interviews with Hmong professionals who worked in the area of finance. The findings revealed that as the Hmong made the transition from an agricultural economy in Laos to the complex economic system in the United States, they have learned to adapt to their environment. First generation immigrants continue to live fairly simple lifestyles and havemaintained their strong value of saving money. The 1.5 generation integrates the Hmong value of saving with their knowledge about the U.S. financial system, resulting in savvy financial investments. The 2nd generation, born and raised in the U.S., has been primarily influenced by the U.S. consumer culture, resulting in perceiving wants as needs. Thus spending is a higher priority than saving.

[Special Issue on Hmong Newcomers to Saint Paul Public Schools] Introduction

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Bic Ngo

2008-01-01

Full Text Available In the late 1970s the aftermath of the Vietnam War brought displaced Hmong refugees (along with other Southeast Asian groups to the United States (Chan, 1994; Long, 1993. Other waves of Hmong resettlement to the United States occurred in the mid-80s and mid-90s. This has resulted in a Hmong population of 183,265, the majority of whom reside in California, Minnesota, Wisconsin, Michigan and Colorado (U.S. Census Bureau, 2005. In 2004, the Thai government closed Wat Tham Krabok (WTK, the last of its Hmong refugee camps (Grigoleit, 2006. This resulted in the most recent resettlement of approximately 15,000 Hmong refugees to the United States (Grigoleit, 2006; Hang et al., 2004. An estimated 5,000 of these WTK refugees came to St. Paul, Minnesota (Hang et al., 2004.

Diaspora and the Predicament of Origins: Interrogating Hmong Postcolonial History and Identity

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Gary Yia Lee

2008-01-01

Full Text Available This paper examines two basic issues that have been of major concern to the Hmong in the diaspora: (1. What is their historical and geographic origin; and (2 are the Hmong part of the Miao nationality in China, and should they accept being known under this generic name?There have been many theories about where the Hmong originally came from, ranging from Mesopotamia in the Middle East during Biblical times, the North Pole, Siberia, to Mongolia and China. This paper consolidates these many propositions with their supporting evidence, and draws its own surprising conclusion as to the real location of the original homeland of the Hmong. Depending on what they regard as their origin and which history they wish to be aligned with, the Hmong may have to reconsider being known as Miao or Meo, a name which most have vehemently rejected because of its derogatory connotation, especially among the more politically conscious Hmong now living in Western countries.

A Critique of Timothy Vang’s Hmong Religious Conversion and Resistance Study

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Nao Xiong

2009-01-01

Full Text Available We review Timothy Vang’s dissertation on the growth and decline of the Hmong Christian church. We argue that Vang’s arguments are methodologically and theoretically flawed. Furthermore, we try to show that his dissertation is not so much an objective analysis of Hmong religious adaptation, but rather an attempt to define and subjugate certain Hmong cultural and religious beliefs and practices as backward and inferior to Christianity. We suggest that it is these kinds of problematic arguments, often couched in academic language, that further perpetuate misinterpretations and misrepresentations about “culture” and “religion” in Hmong American communities.

The Evolution of Hmong Self-Help Organizations in Minnesota

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Shoua Yang

2012-01-01

Full Text Available The Hmong have several types of self-help organizations, classified accordingly to their purposes, to assist the Hmong to adapt to life in American culture. The central research question of this modest exploratory study relates to how these organizations haveevolved over the years in terms of their programming focus and funding strategies. To answer this question, a qualitative approach is used to guide the collection and analysis of data. The study was conducted in the St. Paul/Minneapolis region from 2007 to 2012,where a large population of Hmong refugees has settled since the mid-1970s and where these organizations were founded.

Barriers and facilitators of cervical cancer screening among women of Hmong origin.

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Fang, Dao Moua; Baker, Dian L

2013-05-01

This qualitative study explored the barriers and facilitators of cancer screening among women of Hmong origin. Using a community-based participatory research approach, we conducted focus groups (n=44) with Hmong women who represented four distinct demographic groups among the Hmong community. The participants described sociocultural barriers to screening, which included a lack of accurate knowledge about the causes of cervical cancer, language barriers, stigma, fear, lack of time, and embarrassment. Structural barriers included attitudes and practices of health care providers, lack of insurance, and negative perceptions of services at clinics for the uninsured. Health care providers may require additional training and increased time per visit to provide culturally sensitive care for refugee groups such as the Hmong. Health-related social marketing efforts aimed at improving health literacy may also help to reduce health inequities related to cancer screening among the Hmong.

Making Ends Meet: Hmong Socioeconomic Trends in the U.S.

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Chia Youyee Vang

2012-01-01

Full Text Available This article examines Hmong socioeconomic trends from 1990 to 2010. A review of economic indicators across states and in relation to the U.S. population reveals that on an aggregate level, the Hmong American population’s socioeconomic status has improved significantly. The increases in income and earnings have, however, been shortchanged by external factors brought about partially by the financial crisis and its aftermath. Consequently, this begs us to question the extent to which such developments contribute to the overall economic well-being of Hmong Americans.

An Exploration of Hmong Women's Perspectives on Cancer

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Mary Jo Baisch, PhD, RN

2008-06-01

Conclusion: Many Hmong people in the United States believe that both traditional and Western health care practices are effective, but when health professionals do not address differences in language, communication, and beliefs about health, trust between the provider and client may erode. The findings of this study provide new insight into the importance of cultural accommodation to improve early cancer detection in the Hmong community.

Stressing Success: Examining Hmong Student Success in Career and Technical Education

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Carmen M. Iannarelli

2015-01-01

Full Text Available This study examines factors affecting the academic performance of Hmong students at Chippewa Valley Technical College in Eau Claire, WI. Factors specifically analyzed for their impact upon student success are socioeconomic status, family support, the use of academic support programs, and the influence of agents of socialization. Through the use of archival institutional data, Hmong students were compared to white students at CVTC in terms of their relative grade point averages, course completion rates, and retention rates. Data revealed significant disparities in grade point average performance between Hmong and white students. The data also showed that eligibility for financial aid was significantly higher among Hmong students, and that this difference was commensurate with educational performance gaps between the two groups. Additionally, online surveys were used to assess family support while attending CVTC, the role of academic support programs, and influential agents of socialization. Gender differences in grade point average performance and socialization also were analyzed. Implications of the study’s findings are discussed and recommendations for improving the performance of Hmong students are provided.

Continuing the promise: Recruiting and preparing Hmong-American educators for Central Wisconsin

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Leslie McClain-Ruelle

2006-01-01

Full Text Available The state of Wisconsin, and in the broader context, the middle states of the United States experienced a large influx of Hmong families starting in the early 1980’s and into the 1990’s. With this influx a large number of young, Southeast Asian children entered the PK-12 classrooms, often with the support of bilingual aides. While many of the children flourished within this newer context, they were mostly guided in their classrooms by white, Anglo educators. Although theseeducators work to meet the needs of all children, there were few to no Hmong educators working with these same children in the PK-12 setting. At the same time, a number of Hmong young adults were serving as bilingual aides in these classrooms. Project Forward, a federally funded Title VII grant, has worked to create a shift in these roles, preparing Hmong college students to become educators in the PK-12 settings. In 1999, Central Wisconsin enrolled approximately3,200 Hmong children in the PK-12 schools; at the same time, Central Wisconsin employed merely seven Hmong teachers in the classrooms. The goal of the grant program described in this paper is to prepare teachers of Southeast Asian background for early childhood, elementary, secondary and K-12 classrooms. The Central Wisconsin grant has supported a total of 35 Southeast Asian students in their pursuit of teaching careers. Fulfilling the goal of preparingteachers who can serve as role models for Southeast Asian children in our schools has met with successes and struggles. This article presents consideration of the central factors affectingrecruitment, retention and preparation of Hmong pre-service teachers in Central Wisconsin. The article includes a brief historical examination of the immigration of the Hmong population intothe United States, a consideration of the Hmong culture as it affects recruitment and retention of pre-service teachers and evidence related to successes and struggles experienced by Project

Shamanism: Indications and Use by Older Hmong Americans with Chronic Illness

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Linda A. Gerdner

2012-01-01

Full Text Available This article reports qualitative interviews from an ethnographic study that explored in part, the health seeking behaviors of and for older Hmong Americans with chronic illness. The study occurred over a 36-month period in the St. Paul / Minneapolis area of Minnesota. The majority of interviews were conducted in the Hmong language and lasted approximately three hours. Participants included 35 older Hmong Americans living independently with chronic illness. Themajority of these older adults were female (n=25, 80% with a mean age of 78.43 years. Interviews also included 33 family members (n=25 female,75.75% with a mean age of 75.75 years, who provided a minimum of eight hours of in-home care for an older Hmong American with chronic illness. Due to the significant role of shamans in the spiritual well-being of older adults, three shamans (two male, and one female were also interviewed. All (mean age 83, range65-99 had been “chosen” to become a shaman while living in Laos and had resided in the United States an average of 4 years 5 months (range: 1 month to 13 years. All shamans reported havingan active practice, with comments such as “I have so many [patients] I do not count.” More specifically, one shaman stated that he performed 20 to 40 healing ceremonies per year. One shaman explained his role by stating “I heal the weak and the lost spirit.” The majority of older Hmong Americans (74.29% and family caregivers (57.58 had retained the spiritual beliefs of animism and ancestor worship. Findings report that 18 (51.43% older Hmong Americanscompared to 21 (63.3% family caregivers sought the services of both a physician and a shaman for treatment of the older person’s chronic illness. Fourteen (40% older Hmong Americans compared to ten (30.30% family caregivers sought the services of a physician alone. Only 3 (8.57% older Hmong Americans compared to 2 (6.06% caregivers consulted the services of a shaman alone. Many older adults and

“Die Another Day”: A Qualitative Analysis of Hmong Experiences with Kidney Stones

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Kathleen A. Culhane-Pera

2007-01-01

Full Text Available Background: A chart review at a urological office revealed that Hmong patients present with higher rates of kidney stones, uric acid stones, and complications from kidney stones than non-Hmong patients. In order to ultimately redress this health disparity, a conferenceof Hmong and non-Hmong health care providers decided that we needed to first understand the pertinent social, cultural, economic, and biological factors contributing to the disparity. This research project sought to elicit Hmong patients and family members’explanatory models, decision-making processes, and experiences with the health care system.Methods: We conducted in–depth interviews with 10 Hmong kidney stone patients, 11 family members of 9 patients, and 4 traditional healers. All 10 patients had received urological interventions, including ureteroscopy (8, percutaneous lithotomy (5 and nephrectomy (2. Some patients had postponed medical assistance (6 and had refusedprocedures (4. We qualitatively analyzed the transcribed and translated interviews with an Excel spread sheet and N6 computer software. Results were discussed with patients and a community advisory council.Results: Hmong concepts of kidney function and explanatory models of kidney stones are a blend of traditional and biomedical concepts. Kidney stones are understood as acute health problems caused by hard substances in water and food that stick to the kidney, which weak kidneys cannot excrete. Kidney stone sufferers do not know they have stones until they pass a stone or they see stones on X-rays, as pain or hematuria are non-specific symptoms. They prefer medications, including herbal medicines, to invasive urologicalprocedures. In making decisions about urological interventions, Hmong patients balance fear of disease (pain and renal failure with fear of doctors (complications from interventions and anesthesia. While patients have variable balance points to accept interventions, the basic philosophy of �

Acculturation Processes of Hmong in Eastern Wisconsin

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John Kha Lee

2010-01-01

Full Text Available This study examines acculturation processes among Hmong who live in Eastern Wisconsin by using the East Asian Acculturation Measure (EAAM, which was developed by Barry (2001. The results indicated that in terms of Acculturation, Hmong ranked highest in integration, then separation, assimilation, and lastly marginalization. Questions on each dimension of integration, separation, assimilation, and marginalization were analyzed and positive correlations were found between the youngest of the generations, the length of residency in the United States, and the ability to speak, read, and write in English. In contrast, the older the age of the participant when they came to the United States had a positive correlation with separation. The ability to speak, read, and write in English had a positive correlation with assimilation, and the older the age of coming to the United States had a positive correlation with marginalization. Assimilation and separation had a positive correlation with marginalization, while integration had a negative correlation with marginalization and a positive correlation with assimilation, and separation had no correlation with marginalization. Results are discussed in regards to previous Hmong acculturation studies.

Chao Fa Movies: The Transnational Production of Hmong American History and Identity by Ian G. Baird

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Ian Baird

2014-12-01

Full Text Available Films made by and for particular social and ethnic peoples can reveal a great deal about identity issues. Here, I examine the cultural production, the content, and the socio-cultural and political significance of three Chao Fa-inspired Hmong films produced at Khek Noi, Thailand by Hmong American producers working with largely Hmong Thai actors. The first two, Chao Fa 1 and 2, were directed in 2009 by Kou Thao. The third, Vaj Tuam Thawj – The Legend of Chao Fa, was put together by Jimmy Vang, in 2010. Even though these Chao Fa films are fictional, they attempt to depict events and circumstances that are familiar to many first generation Hmong Americans, and they can muster strong emotions from people who see them as depicting factual history. In addition, just like many other American youth, many 1.5 generation Hmong are tied together by shared media experiences, including Hmong movies. Thus, the Chao Fa movies are important for producing and reproducing, reinforcing and dispersing ideas related to Hmong American identity and culture. They tell stories of the Hmong being oppressed by many different groups, and this history suggests why many Hmong—not only the Chao Fa—have long desired the type of independence and freedom from prejudice and discrimination that they imagine would come if the Hmong only had their own nation state.

Mental Health and Hmong Americans: A comparison of two generations

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Pa Der Vang

2014-12-01

Full Text Available Early studies of Hmong refugees in the U.S. indicated high rates of mental distress related to post-migration stressors such as grief and loss, poverty, and social adversity. This study explores the mental health status of two generations of Hmong Americans 38 years after their first migration. The relationship between acculturation and mental health of 191 1st and 2nd generation Hmong are reported. Results indicated relatively low reports of depressive symptoms and medium to high rates of acculturation to American society. The results are unrelated to demographic factors indicating resilience and adaptation to Western society despite age and generational status and maintenance of culture of origin

Commentary: The Hmong and their Perceptions about Physical Disabilities: An Overview and Review of Selected Literature

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Connie Cha

2010-01-01

Full Text Available The Hmong are one of the fastest growing populations in Central California. Hmong refugee families arrived in Fresno in the late 1970s facing a variety of challenges regarding their traditional health beliefs and the customs of mainstream Western biomedicine. Differing and sometimes conflicting perceptions about physical disabilities have resulted in painful misunderstandings between Hmong families and Western health care providers. The aim of this paper is to present a review of some of the Hmong health belief literature concerning physical disabilities in children. It also includes commentaries from those who work with the Hmong families of physically disabled children.

From a Refugee Camp to the Minnesota State Senate: A Case Study of a Hmong American Woman’s Challenge

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Taeko Yoshikawa

2007-01-01

Full Text Available This paper explores the contested nature of Hmong women’s traditional roles and the recent emergence of Hmong American women leaders by discussing Senator Mee Moua, who was elected to the Minnesota State Legislature in January 2002. She became the first HmongAmerican state legislator in the United States. The family and kinship system are the backbone of the Hmong community, around which Hmong culture is organized. The Hmong recognize kinship through the male line, and the household is the basic economic unit in the patriarchal Hmong social system. This study was intended to find out how Mee Moua perceives her identity in working with her constituents and the Hmong people in her community, why the patriarchal Hmong community in St. Paul supported Mee Moua’s campaign, and how sheearned the broad support of a diverse constituency in defeating a candidate that had been handpicked by St. Paul’s mayor. I argue that ethnic identity and the presentation of individuality as “Mee Moua” combined to make this Hmong American woman a successful bridge between two distinctive cultures.

Frequency and Perceptions of Herbal Medicine use Among Hmong Americans: a Cross Sectional Survey.

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Lor, Kajua B; Moua, Sakura; Ip, Eric J

2016-04-01

To determine the frequency and perceptions of herbal medicine use among Hmong Americans. Cross-sectional telephone survey. Sacramento, California Hmong community. Out of 118 subjects reached, 77 (65.3 %) reported lifetime use of herbal medicines. A majority of respondents agreed that herbal medicines were able to treat the body as a whole. Respondents felt that a leaflet of information indicating uses/side effects would be important to include for herbal medicines. Herbal medicine use was commonly reported among Hmong Americans. Thus, health care providers should be encouraged to discuss these alternative medicines with their Hmong American patients.

Using Mammography Screening: Hmong Women’s Perceptions and Beliefs

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Pang Vang

2010-01-01

Full Text Available Breast cancer is the second leading cause of cancer deaths among all women in the United States. Although mammography screening has been shown to be effective in detecting breast cancer, Hmong women, one of the Asian American/Pacific Islander subgroups, have a very low screening rate. The purpose of this study was to explore factors that influence Hmong women‘s willingness to be screened for breast cancer. Grounded Theory methodology guided the analysis of fifteen qualitative interviews with Midwestern Hmong women between the ages of40-64. Regardless of age, length of US residency, and language spoken, the results showed one core theme and three interrelated themes regarding the women‘s decision to seek mammographyscreening. The three interrelated themes of Breast Health Messages, Screening Barriers, and Screening Facilitators can have negative and/or positive influences on the core theme of mammography-screening decision-making processes. The first related theme of Breast HealthMessages included professional and lay breast health messages. The second related theme, Screening Facilitators, included breast health messages from professionals, abnormal findings, social support, risk for getting breast cancer, doctor‘s recommendations, and insurance. The third related theme, Screening Barriers, identified symptomatic health seeking behavior, instrumental barriers, fear, social influence (which included lay breast health messages, use of traditional Hmong healing practices, embarrassment, and perception of breast cancer risk. This study suggested that the healthcare professionals need to use a culturally sensitive and multidisciplinaryapproach to provide breast health education as well as to assess and provide instrumental support, while encouraging social support to influence Hmong women to attain mammography screening.

The Meaning of Giving Birth: Voices of Hmong Women Living in Vietnam.

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Corbett, Cheryl A; Callister, Lynn Clark; Gettys, Jamie Peterson; Hickman, Jacob R

Increasing knowledge about the sociocultural context of birth is essential to promote culturally sensitive nursing care. This qualitative study provides an ethnographic view of the perspectives on birthing of Hmong mothers living in the highlands of Vietnam. Unique cultural beliefs exist in Hmong culture about the spiritual and physical world as well as ritual practices associated with childbearing. This includes variations of ancestor worship, reincarnation, and healing practices by shamans. Traditionally, Hmong families take an active role in childbirth with birth frequently occurring in the home. Situated within a large collaborative anthropology project, a convenience sample of 8 Hmong women, who had recently given birth, were interviewed regarding the perinatal experience. In addition, ethnic traditional birth attendants (midwives) and other village women contributed perspectives providing richly descriptive data. This ethnographic study was conducted during 6 weeks of immersed participant observation with primary data collection carried out through fieldwork. Data were analyzed to derive cultural themes from interviews and observations. Significant themes included (1) valuing motherhood, (2) laboring and giving birth silently, (3) giving birth within the comfort of home and family, (4) feeling capable of birthing well, (5) feeling anxiety to provide for another child, and (6) embracing cultural traditions. Listening to the voices of Hmong women enhances understanding of the meaning of childbirth. Gaining greater understanding of Hmong cultural beliefs and practices can ensure childbearing women receive respectful, safe, and quality care.

Parents' Perspectives on Hmong Students' Academic Challenges in Reading and Math

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Lee, Kenneth Kong

2014-01-01

The purpose of this survey study was to investigate the relationship between Hmong students' academic achievements and Hmong parental involvement, home environment, and acculturation adjustment as measured by the Math and English Language Arts sections of the California Standard Test in the United States from parents' perspective regarding student…

The Importance of Family for a Gay Hmong American Man: Complicating Discourses of “Coming Out”

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Bic Ngo

2012-01-01

Full Text Available This article draws on research with a gay Hmong young man to illustrate the ways in which coming out discourses fail to take into account the central importance of family and kinship forgay Hmong Americans. It draws on the narratives of a gay Hmong man that emphasizes the importance of family reputation and family bonds to offer an alternative discourse to coming out narratives. It advances understandings of gay identity and experiences by explicating the ways in which family and community are important for a gay Hmong American man. This research significantly contributes to the dearth of research on Asian American LGBT experiences ingeneral and those of LGBT Hmong Americans in particular.

Video Review: Better Places: The Hmong of Rhode Island a Generation Later

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Chia Youyee Vang

2011-12-01

Full Text Available This article provides a review of Better Places: a documentary that follows up with Hmong families who were originally part of a film produced in the early 1980s about the resettlement experiences of Hmong refugees in Providence, Rhode Island.

Reflections on “Crossing Borders in Birthing Practices”: Hmong in Northern Thailand and Saint Paul, Minnesota

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Kathleen A. Culhane-Pera

2014-12-01

Full Text Available As a family physician and medical anthropologist, I have interacted with pregnant women and their families in Minnesota since 1983 and in one Hmong village in Northern Thailand since 1988. In the previous article I describe our recent research about Hmong families’ pregnancy and birth practices in Thailand. In this article, I reflect upon the differences in Minnesota and Thailand, consider what socio-cultural factors may be influencing people’s experiences, and speculate that Minnesota Hmong experiences could be helpful to Thai Hmong.

Afraid of Delivering at the Hospital or Afraid of Delivering at Home: A Qualitative Study of Thai Hmong Families' Decision-Making About Maternity Services.

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Culhane-Pera, Kathleen A; Sriphetcharawut, Sarinya; Thawsirichuchai, Rasamee; Yangyuenkun, Wirachon; Kunstadter, Peter

2015-11-01

Thailand has high rates of maternity services; both antenatal care (ANC) and hospital delivery are widely used by its citizens. A recent Northern Thailand survey showed that Hmong women used maternity services at lower rates. Our objectives were to identify Hmong families' socio-cultural reasons for using and not using maternity services, and suggest ways to improve Hmong women's use of maternity services. In one Hmong village, we classified all 98 pregnancies in the previous 5 years into four categories: no ANC/home birth, ANC/home, no ANC/hospital, ANC/hospital. We conducted life-history case studies of 4 women from each category plus their 12 husbands, and 17 elders. We used grounded theory to guide qualitative analysis. Families not using maternity services considered pregnancy a normal process that only needed traditional home support. In addition, they disliked institutional processes that interfered with cultural birth practices, distrusted discriminatory personnel, and detested invasive, involuntary hospital procedures. Families using services perceived physical needs or potential delivery risks that could benefit from obstetrical assistance not available at home. While they disliked aspects of hospital births, they tolerated these conditions for access to obstetrical care they might need. Families also considered cost, travel distance, and time as structural issues. The families ultimately balanced their fear of delivering at home with their fear of delivering at the hospital. Providing health education about pregnancy risks, and changing healthcare practices to accommodate Hmong people's desires for culturally-appropriate family-centered care, which are consistent with evidence-based obstetrics, might improve Hmong women's use of maternity services.

Aspirations and realities of love, marriage and education among Hmong women.

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Nguyen, Thi Huong; Oosterhoff, Pauline; White, Joanna

2011-12-01

Stereotypical portrayals of the Hmong in Vietnam emphasize their apparently exotic customs related to sexual relationships and marriage and their alleged backwardness and resistance to change. Yet their history shows their ability to respond to changing socioeconomic contexts. This study details practices and aspirations concerning love, marriage and education among different generations of White Hmong women in the northern mountains of Vietnam, with particular attention to the perspectives of young women. We found a diversity of ideas and identified certain rapidly changing practices regarding marriage. Forced marriage through 'wife-snatching' was reported to have always been rare and its meaning and prevalence has seemingly been misunderstood by outsiders. Bride price payment was reported to be an important element of most Hmong marriages. Hmong girls studying at high school and secondary level were found to have particular aspirations pertaining to their marriage, education and career, but lacked confidence in their abilities to create their desired future. Findings also reveal how patrilocal residence following marriage places young women under the strict control of their husbands and parents-in-law, which is likely to contribute to their lack of self-esteem and sense of autonomy.

Hmong Students in Higher Education and Academic Support Programs

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Soua Xiong

2011-12-01

Full Text Available Student awareness, usage, and perception of academic support programs were examined among 55 Hmong college students at a large, public western university. Twenty-eight students had participated in one or more ASPs while 27 students had not participated in any ASPs. Those who had participated found the programs to be supportive with an average rating of 7.39 out of 10 (10 being most supportive. The majority of students who did not participate in ASPs reported that they were not aware of ASPs and their services. Results also show that the majority of Hmong college students perceived a lack of time to study, poor study habits, lack of money, lack of motivation, lack of direction on career goals, and poor time management to be obstacles for them in higher education. Based on the findings, it seems ASPs were not able to reach some Hmong students with their outreach efforts. However, those that they were able to reach found academic support services helpful, especially with financial concerns and direction on career goals.

Of Pride and Pencils: Deconstructing the Role of Ethnic Pride in Hmong Adolescent Identity Formation

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Jacqueline Nguyen

2013-12-01

Full Text Available This study examines the ways that Hmong adolescents describe ethnic pride and how their descriptions are informed by perceptions of collective and social identities. Data from semi-structured interviews with 25 Hmong adolescents age 12-18 were thematically analyzed with attention to affective versus behavioral aspects of ethnic pride and the role of collective or social group identities in adolescent pride perceptions or expressions. Results indicate that Hmong adolescents view affective and behavioral components of ethnic pride as distinct and evaluated self and peer pride along these two dimensions. Moreover, pride was found to be defined as both an individual characteristic and a social construct, and the perception and expression of the term was informed by Hmong adolescent peer groups and collective identities.

Coming Home? The Integration of Hmong Refugees from Wat Tham Krabok, Thailand into American Society

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Grit Grigoleit

2007-01-01

Full Text Available In December 2003, the U.S. State Department officially announced the acceptance of roughly 15,000 Hmong refugees from Wat Tham Krabok, Thailand, into the United States of America. The Hmong refugees were scheduled to be resettled for family reunification in established Hmong communities. As social science research on migration indicates, the existence of ethnic communities is crucial for a successful adaptation to a host society for newcomers. Ethnic communities thereby serve as a buffer zone and provide initial assistance,which is especially important when governmental integration measures are not sufficient. In the case of the Hmong refugee resettlement, the U.S. economic and social incorporation efforts were inefficient, due to cutbacks in U.S. Federal funding and welfare reforms, causinga greater reliance on the receiving Hmong communities. This raises a number of questions about how much an ethnic community can absorb and is able to bear in order to fulfill the newcomers’ needs. What are the limits and how does this affect the initial integration of thenewcomers?

Cross-cultural comparison of successful aging definitions between Chinese and Hmong elders in the United States

OpenAIRE

Nguyen, Annie L.; Seal, David W.

2014-01-01

The purpose of the study was to elicit the definitions of successful aging according to Chinese and Hmong elders living in Milwaukee, WI. In-depth semi-structured interviews were conducted with 44 elders (Hmong n=21 and Chinese n=23). Findings show some similarities in the Chinese and Hmong elders’ definitions though specific cultural differences exist. Chinese elders emphasized physical health and mobility, mental health, positive attitudes, shedding responsibilities, positive family relatio...

Commentary: Utilizing Community-Engaged Approaches to Investigate and Address Hmong Women’s Cancer Disparities

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Shannon M.A. Sparks

2014-12-01

Full Text Available Cancer is a growing concern for women in the Hmong community. Hmong women experience poor health outcomes for both cervical and breast cancer, largely due to low rates of screening and resultant late-stage at diagnosis. Both breast and cervical cancer screening are complicated by a multitude of social, cultural and environmental factors which influence health care decision-making and can otherwise serve to restrict access. We argue that community-engaged research, an orientation which prioritizes collaborative, equitable partnerships and community voice in identifying both problems and solutions, can be a valuable approach to helping address cancer health disparities for Hmong women. Using the Milwaukee-based “Healthy Hmong Women” project as a case example, we detail how the community-engaged approach implemented by the project partners was critical in identifying factors contributing to Hmong cancer disparities and appropriate interventions, as well as the overall acceptance and success of the project. Specifically, we discuss how this approach: (1 promoted community investment and ownership in the project; (2 facilitated the integration of local perspectives and experiences; (3 built capacity to address cancer screening disparities; (4 facilitated the creation of interventions targeting multiple ecological levels; and (5 framed the community as the foundation and driver of positive change.

Dietary acculturation and body composition predict American Hmong children's blood pressure.

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Smith, Chery; Franzen-Castle, Lisa

2012-01-01

Determine how dietary acculturation, anthropometric measures (height, weight, circumferences, and skinfolds), body mass index (BMI), and waist hip ratios (WHRs) are associated with blood pressure (BP) measures in Hmong children living in Minnesota. Acculturation was measured using responses to questions regarding language usage, social connections, and diet. Dietary assessment was completed using the multiple-pass 24-h dietary recall method on two different days. Anthropometric and BP measurement were taken using standard procedures, and BMI and WHR were calculated. Data analyses included descriptive statistics, ANOVA, and stepwise regression analyses. Using stepwise regression analysis, hip circumference (HC) predicted boys' systolic (S)BP (R(2) = 0.55). For girls' SBP, mid-upper arm circumference, WHR, low calcium consumption, and height percentile jointly explained 41% of the total variation. Mid upper arm circumference (MAC) and carbohydrate consumption predicted 35% of the variance for boys' diastolic (D)BP, and HC, dairy consumption, and calcium intake predicted 31% of the total variance for girls' DBP. Responses to dietary acculturation questions revealed between group differences for breakfast with half of the younger Born-Thailand/Laos (Born-T/L) consuming mostly Hmong food, while at dinner Born-US consumed a mixed diet and Born-T/L were more likely to consume Hmong food. Dietary acculturation and body composition predict Hmong children's BP. Copyright © 2012 Wiley Periodicals, Inc.

Gender, Culture, and the Educational Choices of Second Generation Hmong American Girls

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Lo, Bao

2017-01-01

Research on the educational achievement of racialized minorities and immigrants have largely discussed culture as either a deficit or an advantage for academic success. This paper explores gender differences in educational achievement and how the educational choices of second-generation Hmong American girls are impacted by racially constructed gender norms. In response to hegemonic and subordinated femininities, second-generation Hmong American girls pursue education to enter mainstream Ameri...

Adolescents’ Problem Behaviors and Parent-Adolescent Conflicts in Hmong Immigrant Families

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Zha Blong Xiong

2009-01-01

Full Text Available The purpose of the study was to investigate whether Hmong adolescent problem behaviors and school difficulties influence parent-adolescent conflicts above and beyond the variables of adolescents’ embarrassment about their parents, the acculturation gap between parents and adolescents, and age of adolescents. The sample included 209 Hmong adolescents living in Minnesota. There were 123 males and 86 females, ages 12 to 25 years. A survey was administered in several community agencies to adolescents that included their perspectives on the frequency and intensity of parent-adolescent disagreements on 28 issues and the problem behaviors of delinquent peer affiliation, gang involvement, truancy, and school performance. Results of hierarchical multiple regression analyses indicated the set of problem-behavior independent variables explained 26% of the variance in the frequency-intensity of father-adolescent conflicts and 21% of the variance in the frequency-intensity of mother-adolescent conflicts. Ideas for parent education in the Hmong community are discussed.

Cross-cultural comparison of successful aging definitions between Chinese and Hmong elders in the United States.

Science.gov (United States)

Nguyen, Annie L; Seal, David W

2014-06-01

The purpose of the study was to elicit the definitions of successful aging according to Chinese and Hmong elders living in Milwaukee, WI. In-depth semi-structured interviews were conducted with 44 elders (Hmong n = 21 and Chinese n = 23). Findings show some similarities in the Chinese and Hmong elders' definitions though specific cultural differences exist. Chinese elders emphasized physical health and mobility, mental health, positive attitudes, shedding responsibilities, positive family relationships, financial stability, social engagement, religious faith, and accomplishments and volunteer work. Hmong elders emphasized physical health and mobility, mental health, harmonious relationships, positive family relationships, tangible family support, financial stability, social engagement, and religious faith. Cross-cultural comparisons of the findings highlight the cultural heterogeneity between these two subgroups. Implications for practice are discussed.

The Texas Two-Step, Hmong Style: A Delicate Dance Between Culture and Ethnicity

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Faith Nibbs

2007-01-01

Full Text Available Over the last thirty years since relocation, individual Hmong refugee communities in America have evolved with varying needs and outcomes adding to their complexity and diversity in the United States. There is a noted lack of research that examines these factors calling for further study to help understand the role of locality in the adjustment and diversity of refugees. This research begins a discussion on the unique Hmong adaptation in Texas. Unique and sometimes contradictory local factors deriving from thesocio-political environment of Texas have helped to shape a relatively small, but distinctively cosmopolitan community. This paper argues that Texan economic, environmental, and political differences have forged uncharacteristic understandings andchallenge conventional conceptions of what it means to be Hmong.

The Meeting with Guanyin, the Goddess of Mercy: A Case Study of Syncretism in the Hmong System of Beliefs

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Kao-Ly Yang

2007-01-01

Full Text Available The purpose of this case study is to shed light on the identity of the spirit of fertility called Lady Kaying –Niam Nkauj Kab Yeeb—, its religious origin and the general processes of borrowing her fromother cultures within the Hmong culture. Hmong popular beliefs pertaining to Kaying reveal that Kaying is in fact the Chinese Goddess of Mercy Guanyin. She was imported from MahayanaBuddhism by the Hmong people of China who had retained her roles of the “Bestower of Children", the “Guardian Angel” or the "Conductor of the Dead Children". An analysis of the process of borrowing of the Chinese deity into the Hmong pantheon shows that Lady Kaying overlaps with an ancient spirit, the “Ancestor Spirit of Fertility” or Niam Poj Dab Pog. This case study demonstrates that the processes of borrowing are selective, integrative and comprehensive: some traits or fragments were taken from Buddhism and incorporated into the Hmong beliefs through a superimposing of a Hmong pre-existing system of beliefs.

Genesis of the Hmong-American Alliance, 1949-1962: Aspirations, Expectations and Commitments during an Era of Uncertainty

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Frederic C. Benson

2015-12-01

Full Text Available Following an overview of the Franco-Hmong relationship that developed during the first half of the twentieth century and laid the groundwork for future alignments, the main body of this paper focuses on the formative years of the multi-faceted Hmong-American alliance that evolved between 1949 and 1962. Chronologically summarized, this period encompasses wide-ranging and often tumultuous events that ultimately put Laos in what has been described as the cockpit of the Cold War and placed the Hmong on the front lines. When the colonial French withdrew from Laos following the First Indochina War, the United States stepped in to fill the vacuum left behind in the politically unstable country, Washington’s objective being to neutralize Laos and block Communist infiltration from North Vietnam through northeastern Laos—the homeland of the Hmong—and into the Mekong valley, the heartland of the politically dominant Lao, and neighboring Thailand. Trapped in the middle were the Hmong, a multi-clan ethnic minority originally from China that was held in contempt by the governing Lao. The Hmong resettled mainly in Xieng Khouang, a province bordering Tonkin in Vietnam, a country whose hegemony the Hmong historically resisted. The pro-West paramount leaders of the Hmong, Touby Lyfoung and his successor Vang Pao, served as mediators between clan leaders and were mindful of the expectations of their people and their aspiration for freedom. Recognizing that the threat posed by the Vietnamese placed their homeland and livelihoods in jeopardy, they negotiated the support of powerful foreign patrons—the French and later the Americans—and served as intermediaries between the Hmong clan leaders, their foreign patrons, and successive Lao governments. As the showdown leading to the so-called “Secret War” edged forward, the political agendas of the key players were frequently readjusted in the volatile environment. This paper describes the resulting

Does Acculturation and Stigma Affect Hmong Women’s Attitudes Toward and Willingness to Seek Counseling Services?

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Maiteng Lor

2017-12-01

Full Text Available Although the Hmong have resided in the United States since the 1970s, there has been limited research exploring the effect of acculturation and stigma on the Hmong community and their perspective of mental health services. This study investigated the relationship between Hmong women’s level of acculturation, perception of stigma, and the expression of attitudes toward professional psychological help and willingness to see a counselor. The 222 Hmong women completed a Demographic Questionnaire Form (DQF, the Suinn-Lew Asian Self-Identity Acculturation Scale (SL-ASIA, then the Stigma for Receiving Psychological Help (SSRPH, the Attitudes Toward Seeking Professional Psychological Help-Short Form (SSRPH-SF, and finally, the Willingness to See a Counselor questionnaire (WSC. Almost 86% of the Hmong women were between 18 and 35 years old, and 96.4% lived in the United States for 20 or more years and almost 53% practice Shamanism. Data analysis of the research hypotheses found that there was a weak positive significant correlation between acculturation and willingness to seek services. Additionally, the relationship between acculturation and attitudes toward counseling services, expression of attitudes and perception of stigma was statistically significant. However, the relationships between the other study variables: perception of stigma and acculturation, expression of attitudes and acculturation, and acculturation and willingness were not statistically significant. The findings of this study will enhance our understanding of Hmong women and their views of counseling.

Access to Adequate Healthcare for Hmong Women: A Patient Navigation Program to Increase Pap Test Screening

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Moon S. Chen, Jr

2010-01-01

Full Text Available This paper describes the development and implementation of a Hmong Cervical Cancer Intervention Program utilizing a patient navigation model to raise cervical cancer awareness for Hmong women through educational workshops and to assist Hmong women in obtaining a Pap test. Out of 402 women who participated in a baseline survey, the Patient Navigation Program was able to enroll 109 participants who had not had a Pap test in the past 3 years and had never had a Pap test. Through utilization of outreach, an awareness campaign and patient navigation support, at least 38 percent of 109 participants obtained a Pap test. Overall, 21 workshops and 43 outreach activities were conducted by the Hmong Women’s Heritage Association, leading to 63 percent of those enrolled in the Patient Navigation Program who could be contacted to obtain a Pap test.

The Hmong and Health Care in Merced County, California

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Marilyn Mochel

1998-01-01

Full Text Available This article discusses the linguistic and cultural barriersthe Hmong encounter when they attempt to access the healthcare delivery system in Merced County, California. Thetheoretical portion of the article discusses the concepts ofculture, culture change, and some psychological issues thatresult from culture contact. Western biomedicine is viewed asa cultural system. Following this theoretical section, thecultural and linguistic barriers confronted by the Hmong whenthey attempt the access health care in Merced are discussedas well as some successful programs in the development ofculturally sensitive health care. These include the SoutheastAsian Surgical Coordination Team and the Culture Broker Team.The last part of the article covers, in some detail, amultidisciplinary program in cross-cultural health which isbeing implemented by health workers in Merced County.

Crossing Borders in Birthing Practices: A Hmong Village in Northern Thailand (1987-2013

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Kathleen A. Culhane-Pera

2014-12-01

Full Text Available Background: Over the past several decades in Northern Thailand, there has been a contest of authoritative knowledge between the Hmong traditional birth system and the Thai biomedical maternity system. In this paper, we explore the contest in one Hmong village by describing the traditional and biomedical practices; families’ birth location choices; and elements of authoritative knowledge. Methods: We built on a village survey and conducted an ethnographic qualitative case study of 16 families who made different pregnancy care choices. Results: The contest is being won by the Thai biomedical system, as most families deliver at the hospital. These families choose hospital births when they evaluate problems or potential problems; they have more confidence in the superior Thai biomedical system with its technology and medicines than in the inadequate Hmong traditional system. But the contest is ongoing, as some families prefer to birth at home. These families choose home births when they want a supportive home environment; they embrace traditional Hmong birth knowledge and practices as superior and reject hospital birth practices as unnecessary, harmful, abusive, and inadequate. Despite their choice for any given pregnancy, the case study families feel the pull of the other choice: hospital birth families lament loss of the home environment and express their dislike of hospital practices; and home birth families feel the anxiety of potentially needing quick obstetrical assistance that is far away. Conclusion: While most families choose to participate in the Thai biomedical system, they also use Hmong pregnancy and postpartum practices, and some families choose home births. In this village, the contest for the supremacy of authoritative birth knowledge is ongoing.

The Lack of Motivation to Pursue Postsecondary Education among Hmong Students: A Grounded Theory Study

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Lee, Xang

2015-01-01

In rural areas, a lack of motivation to pursue a postsecondary degree continues to affect Hmong students at the postsecondary education level. The purpose of this qualitative grounded theory research was to create a model based on the exploration of the lack of motivation to pursue postsecondary education among Hmong high school students.…

Constructing a Governing Rationale: Developing Lao Hmong Refugees at Wat Tham Krabok

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David Chambers

2014-12-01

Full Text Available In this paper I argue that Thai discourses of modernization and development have been taken up by the leaders and other prominent monks at Wat Tham Krabok Buddhist Temple (WTK in central Thailand’s Saraburi Province and directed at governing a settlement of mostly Lao Hmong refugees that made their home on temple controlled land from the 1990s to 2000s. Though decoding the motivations on the part of WTK’s leaders and other senior monks for allowing thousands of Hmong to settle on WTK controlled land is a complex process, viewing the story through the lens of development teaches new things about their overarching motivations for such an intervention. Furthermore, it allows several aspects of their governing rationale—including attention to legibility, territoriality, infrastructural development—to stand out and reveals that WTK’s leaders enacted specific projects that appear to be directed at governing, reforming, and possibly modernizing the Hmong population at WTK. The styles of this intervention varied between the temples second and third abbots, Chamroon and Charoen, in their respective use of discursive versus material means of intervention. Considering these goals in concert with the history of material construction at the temple highlights how the material and discursive aspects of life at WTK are recursively connected to reinforce regimes of Hmong development toward an ideal of modernity that pays homage to symbols of Thai modernity and legitimizes WTK as a worthy Buddhist institution.

Qha Ke (Guiding the Way From the Hmong Ntsu of China, 1943

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Nicholas Tapp

2009-01-01

Full Text Available This article provides the text of Ruey Yih-Fu's 1943 collected version of the Qhuab Ke, or Song of Opening the Way, sung at a Hmong funeral in China. An English translation is provided based on the Hmong and Chinese translations given by Ruey, together with extensive notes and details about the Song. Ruey's own IPA-based transliteration is mainly kept, with some modifications in view of RPA. It appears to be one of the earliest and most original versions of the Qhuab Ke we have.

Colorectal cancer beliefs, knowledge, and screening among Filipino, Hmong, and Korean Americans.

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Tran, Mi T; Jeong, Matthew B; Nguyen, Vickie V; Sharp, Michael T; Yu, Edgar P; Yu, Filmer; Tong, Elisa K; Kagawa-Singer, Marjorie; Cuaresma, Charlene F; Sy, Angela U; Tsoh, Janice Y; Gildengorin, Ginny L; Stewart, Susan L; Nguyen, Tung T

2018-04-01

To the authors' knowledge, there are few studies to date regarding colorectal cancer (CRC) beliefs, knowledge, and screening among multiple Asian American populations, who are reported to have lower CRC screening rates compared with white individuals. The current study was performed to assess knowledge and beliefs regarding the causes of CRC, its prevention, and factors associated with CRC screening among 3 Asian American groups. The authors conducted an in-language survey with Filipino (Honolulu, Hawaii), Hmong (Sacramento, California), and Korean (Los Angeles, California) Americans aged 50 to 75 years who were sampled through social networks. Bivariate and multivariable analyses were conducted to assess factors associated with CRC screening. The sample of 981 participants was 78.3% female and 73.8% reported limited proficiency in English. Few of the participants were aware that age (17.7%) or family history (36.3%) were risk factors for CRC; 6.2% believed fate caused CRC. Only 46.4% of participants knew that screening prevented CRC (74.3% of Filipino, 10.6% of Hmong, and 55.8% of Korean participants; PFilipino, 72.0% of Hmong, and 51.4% of Korean participants; PFilipino, 43.8% of Hmong, and 41.4% of Korean participants; PFilipino), having a family history of CRC, having health insurance or a regular source of health care, and knowing that a fatty diet caused CRC. Believing that fate caused CRC and that praying prevented it were found to be negatively associated with ever screening. Factors associated with being up to date for CRC screening included being born in the United States, having a family history of CRC, and having access to health care. Knowledge regarding the causes of CRC and its prevention among Filipino, Hmong, and Korean individuals is low. However, health care access, not knowledge or beliefs, was found to be a key determinant of CRC screening. Cancer 2018;124:1552-9. © 2018 American Cancer Society. © 2018 American Cancer Society.

The Hmong Diaspora: preserved South-East Asian genetic ancestry in French Guianese Asians.

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Brucato, Nicolas; Mazières, Stéphane; Guitard, Evelyne; Giscard, Pierre-Henri; Bois, Etienne; Larrouy, Georges; Dugoujon, Jean-Michel

2012-01-01

The Hmong Diaspora is one of the widest modern human migrations. Mainly localised in South-East Asia, the United States of America, and metropolitan France, a small community has also settled the Amazonian forest of French Guiana. We have biologically analysed 62 individuals of this unique Guianese population through three complementary genetic markers: mitochondrial DNA (HVS-I/II and coding region SNPs), Y-chromosome (SNPs and STRs), and the Gm allotypic system. All genetic systems showed a high conservation of the Asian gene pool (Asian ancestry: mtDNA=100.0%; NRY=99.1%; Gm=96.6%), without a trace of founder effect. When compared across various Asian populations, the highest correlations were observed with Hmong-Mien groups still living in South-East Asia (Fst<0.05; P-value<0.05). Despite a long history punctuated by exodus, the French Guianese Hmong have maintained their original genetic diversity. Copyright © 2012 Académie des sciences. Published by Elsevier SAS. All rights reserved.

[Special Issue on Hmong Newcomers to Saint Paul Public Schools] The Affective Consequences of Cultural Capital: Feelings of Powerlessness, Gratitude, and Faith among Hmong Refugee Parents

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Bic Ngo

2008-01-01

Full Text Available In education research, the analysis of the role of cultural capital has focused primarily on its role in parent involvement. Little attention has been paid to how cultural capital affects the attitudes or feelings of parents about their worth and roles as parents. In this article I examine the impact of the exclusionary characteristic of cultural capital on refugee Hmong parents from Wat Tham Krabok. I highlight themes of uncertainty, powerlessness, gratitude and faith that parents repeatedly raised when speaking about their children's education. I suggest that paying attention to the affective emotional consequences of cultural capital is critical for understanding the outlook of refugee Hmong parents on their children's education.

[Special Issue on Hmong Newcomers to Saint Paul Public Schools] The Affective Consequences of Cultural Capital: Feelings of Powerlessness, Gratitude, and Faith among Hmong Refugee Parents

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Bic Ngo

2008-01-01

Full Text Available In education research, the analysis of the role of cultural capital has focused primarily on its role in parent involvement. Little attention has been paid to how cultural capital affects the attitudes or feelings of parents about their worth and roles as parents. In this article I examine the impact of the exclusionary characteristic of cultural capital on refugee Hmong parents from Wat Tham Krabok. I highlight themes of uncertainty, powerlessness, gratitude and faith that parents repeatedly raised when speaking about their children’s education. I suggest that paying attention to the affective—emotional—consequences of cultural capital is critical for understanding the outlook of refugee Hmong parents on their children’s education.

Adolescent Secretive Behavior: African American and Hmong Adolescents' Strategies and Justifications for Managing Parents' Knowledge about Peers

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Bakken, Jeremy P.; Brown, B. Bradford

2010-01-01

Drawing upon the expectancy violation-realignment theory of autonomy development, this qualitative study examined African American and Hmong adolescent autonomy-seeking behaviors and parent-child communication about activities and relationships with peers. Twenty-two African American and 11 Hmong adolescents in grades 6-12 and 14 African American…

Afraid of delivering at the hospital or afraid of delivering at home : a qualitative study of Thai Hmong families' decision-making about maternity services

OpenAIRE

Culhane-Pera, K.A.; Sriphetcharawut, S.; Thawsirichuchai, Rasamee; Yangyuenkun, W.; Kunstader, P.

2015-01-01

Thailand has high rates of maternity services; both antenatal care (ANC) and hospital delivery are widely used by its citizens. A recent Northern Thailand survey showed that Hmong women used maternity services at lower rates. Our objectives were to identify Hmong families' socio-cultural reasons for using and not using maternity services, and suggest ways to improve Hmong women's use of maternity services. In one Hmong village, we classified all 98 pregnancies in the previous 5 years into fou...

The Centrality of Ethnic Community and the Military Service Master Frame in Hmong Americans’ Protest Events and Cycles of Protest, 1980-2010

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Yang Sao Xiong

2016-12-01

Full Text Available Protest is one political strategy by which marginalized groups can try to effect social change in society. As an ethnic group with a unique historical relationship with the United States government, Hmong former refugees have regularly engaged in protests in response to perceived political threats, political opportunities, or both. Using cataloged English-language newspapers, this study examines the characteristics, forms and collective action frames of 84 Hmong American-led protest events in the United States between 1980 and 2010. The evidence indicates that Hmong American protests emerged in the 1990s, coinciding with their formation of socioeconomically mobile ethnic communities, and continued to increase in frequency throughout the 2000s particularly in places with substantial concentrations of Hmong. Although most Hmong protest events involved demonstrations, these events varied greatly in terms of their targets and issues. During the past 30-35 years, Hmong American cycles of protest have produced three master frames: the refugee protection frame, the military service frame, and the civil rights frame. I argue that the military service frame represents one of the most enduring and, to date, most potent collective action frames in Hmong Americans’ modern repertoire of contention. Immigrant groups’ increasingly developed communities and their strategic use of collective action frames could have significant implications for their political incorporation in the United States.

Dreams of the Hmong Kingdom: The Quest for Legitimation in French Indochina, 1850- 1960, by Mai Na M. Lee. Madison, University of Wisconsin Press, 2015. 430 pages.

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Nengher N. Vang

2015-12-01

Full Text Available This article provides a book review of Mai Na M. Lee’s Dreams of the Hmong Kingdom: The Quest for Legitimation in French Indochina, 1850-1960. Dreams of the Hmong Kingdom. It highlights the contribution of the book to the historiography of the Hmong and provides a critical assessment of the dichotomous analytical framework that Lee uses to analyze the rivalry between Hmong messianic leaders and Hmong political brokers and the competition between the Ly and Lo clans for paramountcy in French Indochina

You Must Not Spank Your Children in America: Hmong Parenting Values, Corporal Punishment, and Early Childhood Intervention Programs.

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Hughes, Mary Kay

Conflicts between traditional Hmong values and traditional American parenting values are explored, drawing on the experiences of a coordinator of an Even Start program serving Hmong parents. Even Start is a state-funded early childhood intervention program with a literacy component for parents with less than an eighth grade proficiency in reading…

The Costs of "Living the Dream" for Hmong Immigrants: The Impact of Subtractive Schooling on Family and Community

Science.gov (United States)

Ngo, Bic

2017-01-01

In this article, I engage critical discourse analysis of in-depth, semistructured interviews with 4 Hmong community leaders to illumine their perspectives on the role of subtractive schooling in the struggles of Hmong students, parents, and the ethnic community as a whole. I reveal their understanding of the exclusionary practices of school that…

Structural reconstruction of the catalytic center of LiPDF through multiple scattering calculation with MXAN

International Nuclear Information System (INIS)

Guo Xiaoyun; Chu Wangsheng; Ma Sixuan; Gong Weimin; Benfatto, Maurizio; Hu Tiandou; Xie Yaning; Wu Ziyu

2006-01-01

Peptide deformylase (PDF, EC 3.5.1.27) is essential for the normal growth of eubacterium but not for mammalians. Recently, PDF has been studied as a target for new antibiotics. In this paper, X-ray absorption spectroscopy was employed to determine the local structure around the zinc ion of PDF from Leptospira Interrogans in dry powder, because it is very difficult to obtain the crystallized sample of LiPDF. We performed X-ray absorption near edge structure (XANES) calculation and reconstructed successfully the local geometry of the active center, and the results from calculations show that a water molecule (Wat1) has moved towards the zinc ion and lies in the distance range to coordinate with the zinc ion weakly. In addition, the sensitivity of theoretical spectra to the different ligand bodies was evaluated in terms of goodness-of-fit

Structural reconstruction of the catalytic center of LiPDF through multiple scattering calculation with MXAN

Science.gov (United States)

Guo, Xiaoyun; Chu, Wangsheng; Ma, Sixuan; Gong, Weimin; Benfatto, Maurizio; Hu, Tiandou; Xie, Yaning; Wu, ZiYu

2006-11-01

Peptide deformylase (PDF, EC 3.5.1.27) is essential for the normal growth of eubacterium but not for mammalians. Recently, PDF has been studied as a target for new antibiotics. In this paper, X-ray absorption spectroscopy was employed to determine the local structure around the zinc ion of PDF from Leptospira Interrogans in dry powder, because it is very difficult to obtain the crystallized sample of LiPDF. We performed X-ray absorption near edge structure (XANES) calculation and reconstructed successfully the local geometry of the active center, and the results from calculations show that a water molecule (Wat1) has moved towards the zinc ion and lies in the distance range to coordinate with the zinc ion weakly. In addition, the sensitivity of theoretical spectra to the different ligand bodies was evaluated in terms of goodness-of-fit.

Structural reconstruction of the catalytic center of LiPDF through multiple scattering calculation with MXAN

Energy Technology Data Exchange (ETDEWEB)

Guo Xiaoyun [Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, CAS, 100049 Beijing (China); School of Life Science, Key Laboratory of Structural Biology, University of Science and Technology of China, 230026 Hefei, Anhui (China); Chu Wangsheng [Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, CAS, 100049 Beijing (China); Department of Physics, University of Science and Technology of China, 230026 Hefei, Anhui (China); Ma Sixuan [Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, CAS, 100049 Beijing (China); Gong Weimin [National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 100101 Beijing (China); Benfatto, Maurizio [Instituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, P.O. Box 13, 00044 Frascati (Italy); Hu Tiandou [Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, CAS, 100049 Beijing (China); Xie Yaning [Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, CAS, 100049 Beijing (China); Wu Ziyu [Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, CAS, 100049 Beijing (China) and Instituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, P.O. Box 13, 00044 Frascati (Italy)]. E-mail: wuzy@mail.ihep.ac.cn

2006-11-15

Peptide deformylase (PDF, EC 3.5.1.27) is essential for the normal growth of eubacterium but not for mammalians. Recently, PDF has been studied as a target for new antibiotics. In this paper, X-ray absorption spectroscopy was employed to determine the local structure around the zinc ion of PDF from Leptospira Interrogans in dry powder, because it is very difficult to obtain the crystallized sample of LiPDF. We performed X-ray absorption near edge structure (XANES) calculation and reconstructed successfully the local geometry of the active center, and the results from calculations show that a water molecule (Wat1) has moved towards the zinc ion and lies in the distance range to coordinate with the zinc ion weakly. In addition, the sensitivity of theoretical spectra to the different ligand bodies was evaluated in terms of goodness-of-fit.

Contours of Race and Ethnicity: Institutional Context and Hmong American Students' Negotiations of Racial Formation in Higher Education

Science.gov (United States)

Vue, Rican

2013-01-01

Hmong American students and their struggles are largely invisible yet grossly misunderstood when seen. This study reveals how Hmong Americans negotiate the contours of race and ethnicity to construct an affirming identity on their respective university campuses. A framework of campus racial climate is employed to investigate how institutional…

Hmong American Parents' Views on Promoting Adolescent Sexual Health

Science.gov (United States)

Meschke, Laurie L.; Peter, Christina R.

2014-01-01

Parents play an important role in the promotion of adolescent sexual health, but little is known about parents' attitudes and beliefs in immigrant families. We examine Hmong American parents' attitudes about adolescent sexual health using survey data from 202 parents of adolescents with attention to parental gender differences. Breaking from…

Hmong Parental Involvement and Support: A Comparison Between Families of High and Low Achieving High School Seniors

Directory of Open Access Journals (Sweden)

Katherine Green

2009-01-01

Full Text Available The Hmong are some of the newest refugees who have settled in the United States with population estimates around 300,000. Unfortunately research has shown many Hmong children are not as successful in their education as their peers. Parental involvement in education has consistently been shown to impact academic success and attendance in higher education programs. Little is known about Hmong parental involvement in their children’s education process. Therefore, this study was done to compare and contrast the general family characteristics, parenting methods, parental involvement philosophies, parental involvement experiences, and parental education expectations in Hmong families of high school seniors classified as either high academic achievers or low achievers. Students were classified into either higher or lower academic achievement groups based on their high school cumulative GPA. Five students were randomly selected for each group and a qualitative research interview method was used to interview the students and both of their parents (n=30. The findings showed the parents of the higher academic achieving students were younger, had higher levels of education, and had better relationships and trust with the students. Parents from both groups did not have any written rules for their children to follow at home, they mainly became involved in their children’s education during the elementary and middle school years, and they did not have any specific preference of an educational level, career, or school for their children after high school. Recommendations for ways Hmong families can be encouraged to participate more in education are made.

Promoting Hmong refugees' well-being through mutual learning: valuing knowledge, culture, and experience.

Science.gov (United States)

Goodkind, Jessica R

2006-03-01

Refugees who resettle in a new country face numerous struggles, including overcoming past traumas and coping with post-migration stressors, such as lack of meaningful social roles, poverty, discrimination, lack of environmental mastery, and social isolation. Thus, in addition to needing to learn concrete language skills and gain access to resources and employment, it is important for refugees to become a part of settings where their experiences, knowledge, and identity are valued and validated. The Refugee Well-Being Project (RWBP) was developed to promote the well-being of Hmong refugees by creating settings for mutual learning to occur between Hmong adults and undergraduate students. The RWBP had two major components: (1) Learning Circles, which involved cultural exchange and one-on-one learning opportunities, and (2) an advocacy component, which involved undergraduates advocating for and transferring advocacy skills to Hmong families to increase their access to resources in their communities. The project was evaluated using a mixed quantitative and qualitative approach. This article discusses data from qualitative interviews with participants, during which the importance of reciprocal helping relationships and mutual learning emerged as significant themes.

Intergenerational Family Conflict and Coping Among Hmong American College Students

Science.gov (United States)

Su, Jenny; Lee, Richard M.; Vang, Shary

2005-01-01

Problem solving and social support, as different styles of coping with intergenerational family conflict, were examined among 86 Hmong American college students. Problem solving and social support were hypothesized to differentially moderate the effects of family conflict on psychological adjustment. Furthermore, the effects of attributions of…

It’s Called “Going Out to Play”: A Video Diary Study of Hmong Girls’ Perspectives on Running Away

Science.gov (United States)

Edinburgh, Laurel D.; Garcia, Carolyn M.; Saewyc, Elizabeth M.

2015-01-01

How do Hmong immigrant adolescent girls’ decide to run away, return home, leave again, or stay home? Video diaries by 11 sexually-exploited runaway Hmong girls, age 13–16, revealed four themes: “Fighting restrictions,” resisting family cultural expectations and desires to be like other American teens; “Not Running Away, Going Out to Play,” which captured impulsive decision-making; “Unrestrained Partying” described runaway experiences but minimized dangers they faced; and “Trying to Change,” returning home because of family bonds and wanting to “be someone good.” Given their limited ability to anticipate risks, interventions should focus on runaway prevention initiatives for Hmong families and teens. PMID:23311908

Knowledge of colorectal cancer screening guidelines and intention to obtain screening among nonadherent Filipino, Hmong, and Korean Americans.

Science.gov (United States)

Tsoh, Janice Y; Tong, Elisa K; Sy, Angela U; Stewart, Susan L; Gildengorin, Ginny L; Nguyen, Tung T

2018-04-01

Nonadherence to colorectal cancer (CRC) screening among Asian Americans is high but not well understood. This study examined correlates of screening intention among Filipino, Hmong, and Korean Americans who were nonadherent to CRC screening. Using cross-sectional, preintervention survey data from 504 Asian Americans (115 Filipinos, 185 Hmong, and 204 Koreans) aged 50-75 years who were enrolled in a multisite cluster randomized controlled trial of lay health educator intervention, we analyzed correlates of self-reported CRC screening nonadherence, which was defined as not being up-to-date for fecal occult blood test, sigmoidoscopy, or colonoscopy. Only 26.8% of participants indicated intention to obtain screening within 6 months (Hmong: 12.4%; Korean: 30.8%; and Filipino: 42.6%; P Filipinos, which was unexplained by socio-demographics, health care factors, perceived needs for CRC screening, or knowledge of screening guidelines. CRC screening intention among nonadherent Filipino, Hmong, and Korean Americans was low. Targeting knowledge of CRC screening guidelines may be effective strategies for increasing CRC screening intention among nonadherent Asian Americans. Cancer 2018;124:1560-7. © 2018 American Cancer Society. © 2018 American Cancer Society.

Understanding Barriers to Prevention of ntshav qab zib/nsthaav qaab zib: A Hmong perspective

Directory of Open Access Journals (Sweden)

Miguel A. Perez

2010-01-01

Full Text Available The need to decrease health disparities has been widely documented in the professional literature, therefore, it is not surprising that one of the two goals listed in Healthy People 2010 is the reduction of health disparities in ethnic and racial communities in the United States. The research literature, however, shows that the majority of efforts to decrease health disparities have focused on the major racial and ethnic groups in the United State and few if any efforts have focused on the healthcare needs, practices, beliefs, barriers, and other health aspects of the Hmong community. The purpose of this study is to record barriers to addressing diabetes in the Hmong community. Data were collected using Photovoice, a qualitative data collection method which enables participants to record in photo format the issues they experience. Findings from the study identified several barriers to diabetes prevention in the Hmong community. Participants indicate 1 the environment as a major key barrier, 2 personal choices, habits, and life style and, 3 lack of a safe environment to access physical activity as factors contributing to the potential for developing diabetes.

Barriers to cancer screening in Hmong Americans: the influence of health care accessibility, culture, and cancer literacy.

Science.gov (United States)

Lee, Hee Yun; Vang, Suzanne

2010-06-01

Hmong Americans face high cancer mortality rates even in comparison to their Asian American counterparts, and report low utilization of cancer screenings. To date, no study has been conducted on the cultural barriers this population faces in undergoing cancer screenings. A systematic review of the literature was conducted to examine the existing knowledge regarding the barriers to cancer screening for Hmong Americans. Potential barriers were identified from this examination to include: health access factors (type of health insurance, ethnicity of provider, low English proficiency, and years spent in the U.S.); cultural factors (belief in the spiritual etiology of diseases, patriarchal values, modesty, and mistrust of the western medical system); and cancer literacy factors (cancer and prevention illiteracy). Based on this review, potential cultural and ethnic group-specific prevention strategies and cancer health policies are discussed to address these barriers and enhance screening behavior among the Hmong.

Individual Empowerment Is Not Enough: Using a Social Norms Lens to Understand the Limited Educational Uptake of Vietnam's Hmong Girls

Science.gov (United States)

Jones, Nicola; Presler-Marshall, Elizabeth; Van Anh, Tran Thi

2016-01-01

While on a national level Vietnam has achieved--and surpassed--gender parity in education, restrictive social norms that value Hmong girls primarily for their future roles as wives, daughters-in-law and mothers have largely precluded their advancement to high school. Drawing on qualitative data collected in the country's Hmong homeland in Ha Giang…

Bonding and Bridging Social and Cultural Capitals: Perceived Factors Associated With Family Eating Practices Among Hmong, Latino, and White Mothers and Fathers.

Science.gov (United States)

Roche, Abigail; Goto, Keiko; Zhao, Yanling; Wolff, Cindy

2015-01-01

To examine perceived social and cultural capitals associated with family eating practices among Hmong, Latino, and white mothers and fathers. Six focus groups composed of 52 Hmong, Latino, and white mothers and fathers of young children were conducted to examine parental perceptions of social and cultural capitals associated with eating practices. Whereas Hmong participants unanimously emphasized the healthfulness of their traditional food, Latino groups had divergent views on their traditional foods' healthfulness. Hmong parents highly valued their traditional foods whereas white and Latino mothers were more accepting of new foods from other cultures. Participants noted divergent views on gender roles in family eating practices and food culture preservation efforts. Identifying and promoting bonding and bridging of cultural assets for healthy dietary practices among different cultural groups may be important for developing successful nutrition education programs across ethnicities in the community. Copyright © 2015 Society for Nutrition Education and Behavior. Published by Elsevier Inc. All rights reserved.

Food system access, shopping behavior, and influences on purchasing groceries in adult Hmong living in Minnesota.

Science.gov (United States)

Franzen, Lisa; Smith, Chery

2010-01-01

To investigate influences on shopping and eating behavior of Hmong adults living in St. Paul/Minneapolis, Minnesota. Conducted a mapping project, food surveys, food frequency questionnaire (FFQ), and focus groups (n = 11). Subjects were assigned to three groups. The B-TL(1) group was made up of subjects who were born in Thailand/Laos and had lived in the US 5 years (n = 20). The B-US group was made up of subjects who were born and/or raised in the US (n = 30). Using Geographical Informational Systems software, 15 grocery stores were mapped and surveyed. Food prices were compared with the consumer price index (CPI). The FFQ assessed food consumption patterns. Focus group transcripts were evaluated for themes and coded. Degree of acculturation was assessed by adapting a previously developed instrument. The population is concentrated in St. Paul, coinciding with store density. Limited foods had CPIs and some CPIs were outdated. B-US had significantly higher levels of dietary acculturation than B-TL(2) and B-TL(1), with B-TL(2) also having a higher dietary acculturation level compared with B-TL(1). Acculturation of the Hmong into the American food system, determinants of store type, and Hmong food's having a mainstream factor were identified themes. B-US and B-TL(2) shopped at American stores more than did B-TL(1) because of convenience, one-stop shopping, and increased English fluency. Hmong foods have entered the American food system and are sold at Asian and American stores.

Adiposity and height of adult Hmong refugees: relationship with war-related early malnutrition and later migration.

Science.gov (United States)

Clarkin, Patrick F

2008-01-01

This study investigated whether historical proxies for poor nutrition early in life were associated with differences in body composition and height among adult Hmong refugees. Life history and anthropometric data were collected from a sample of 279 Hmong aged 18-51 years who were born in Laos or Thailand and resettled in French Guiana or the United States following the Second Indochina War. Overall, 30.5% were born in a war zone in Laos, while 38.8% were displaced as infants; these individuals were presumed to have experienced malnutrition in the perinatal and infant periods, respectively. Resettlement in urban areas in the US was utilized as a proxy for greater exposure to excessive energy balance, compared with Hmong who resettled in rural areas in French Guiana. In multiple linear regression models, being displaced in infancy was negatively associated with height after controlling for confounders, while being born in a war zone was associated with higher adiposity and centralized body fat distribution. Resettlement in the US was associated with a higher centralization of subcutaneous fat, but not overall adiposity. These findings may be of interest to the study of the developmental origins of obesity, in a population that has undergone early malnutrition followed by migration and rapid nutritional transition.

The Educational Realities of Hmong Communities in Vietnam: The Voices of Teachers

Science.gov (United States)

Lavoie, Constance

2011-01-01

This article presents the language policy and sociolinguistic realities of Hmong people in Lao Cai province, Vietnam. Minority children, who have their own mother tongue, are educated in Vietnamese, a language that few understand. In response to this situation, the Ministry of Education and Training of Vietnam in collaboration with UNICEF,…

From Refugee to Transformer: A Bourdieusian Take on a Hmong Learner's Trajectory

Science.gov (United States)

De Costa, Peter I.

2010-01-01

This ethnographic case study of a male Hmong refugee, Vue Lang, is situated against a backdrop that is characterized by a burgeoning immigrant population in the United States and a growing need to provide them with English language instruction. The Bourdieusian concepts of "capital", "habitus", and "field" (Bourdieu, 1991) are used to explicate…

Gran Torino's Hmong Lead Bee Vang on Film, Race, and Masculinity: Conversations with Louisa Schein

Directory of Open Access Journals (Sweden)

Louisa Schein

2010-01-01

Full Text Available Bee Vang, of Minneapolis, played the Hmong lead Thao Vang Lor in Clint Eastwood's 2008 Gran Torino. He was sixteen when he shot the film and had no acting training. For 27 days on location in urban Detroit he played before a Hollywood crew opposite an icon of the filmindustry doing multiple takes of each scene and camera angle. The shoot was full of unexpected twists and turns some of which he recounts in these interchanges with Hmong media expert Louisa Schein of the Departments of Anthropology and Women's and Gender Studies at Rutgers University. Over several conversations, condensed here, Vang and Schein talk about Gran Torino, about acting and film critique, about immigrants and stereotypes, about masculinity and sexuality, and about Vang's vision for what needs to change to address problems of race and inequality in and beyond media worlds.

Contradictions in Learning how to be Thai: A Case Study of a Young Hmong Woman

Directory of Open Access Journals (Sweden)

Tracy Pilar Johnson-Messenger

2003-01-01

Full Text Available This paper comes from a three month period of fieldwork that I conducted in a green Hmong village in northern Thailand during the summer of 1998. During that time a crisis erupted between a local Thai government organization and the families of “Muban”1 in which one of my main informants, Ga, a 20 year old Hmong kindergarten teacher, played a major role. Although the conflict remained unresolved at the time I left Thailand, I believe that an analysis of the events, along with an analysis of Ga's role in the crisis, will illustrate the way in which education contributes to the production of new identities which social actors draw on to interpret ambiguous and contradictory social situations. I am not suggesting that Ga's project can ultimately be considered successful in effectively accomplishing such a transformation, but what I do believe her experience shows is the ways in which education, history and politics may impact the production and distribution of cultural meanings, which make such transformations possible. Moreover, the shifting identities members of a culture may craft out of different social discourses position them in and around such cultural meanings thus making it possible for them to pursue contradictory social aims within a cultural formation, and to possibly alter the way in which cultural resources are reproduced. After a brief introduction to the Hmong in northern Thailand and a discussion of some of the social reproduction theory as it has been considered within anthropology and more particularly educational anthropology, the paper will proceed to the crisis and its analysis.

Extremely High Prevalence of Metronidazole-Resistant Helicobacter pylori Strains in Mountain People (Karen and Hmong) in Thailand.

Science.gov (United States)

Vilaichone, Ratha-korn; Ratanachu-Ek, Thawee; Gamnarai, Pornpen; Chaithongrat, Supakarn; Uchida, Tomahisa; Yamaoka, Yoshio; Mahachai, Varocha

2016-04-01

This study aimed to survey the prevalence, patterns of antibiotic resistance, and clinical factors associated with antibiotic resistance in Helicobacter pylori among the Karen and Hmong mountain people of Thailand. We recruited dyspeptic patients in the Maesod district, Tak Province, Thailand. All subjects underwent upper gastrointestinal endoscopy, and three antral gastric biopsies were obtained for rapid urease tests and culture. An epsilometer was used to determine the minimum inhibitory concentrations of amoxicillin (AMX), clarithromycin (CLR), metronidazole (MNZ), levofloxacin (LVX), ciprofloxacin (CIP), and tetracycline (TET). A total of 291 subjects were enrolled; 149 (51.2%) were infected with H. pylori. Helicobacter pylori infection was present in 47.1% of Thai, 51.7% of Karen, and 58.7% of Hmong subjects. Antibiotic resistance was present in 75.8% including AMX (0.8%), TET (0%), CLR (5.6%), MNZ (71.8%), CIP (19.4%), LVX (19.4%), and multidrug resistance in 21.8%. Karen subjects had the highest prevalence of MNZ resistance (84.6%), and Hmong subjects had the highest prevalence of fluoroquinolone (27.3%) and multidrug (34.1%) resistance. MNZ plus fluoroquinolone (14.5%) was the most common multidrug resistance. There was no association between clinical factors and antibiotic resistance. MNZ resistance was prevalent, whereas fluoroquinolone- and multidrug-resistant H. pylori infections are important problems in mountain people of Thailand. © The American Society of Tropical Medicine and Hygiene.

Comparison of the Block Kid's Food Frequency Questionnaire with a 24 h dietary recall methodology among Hmong-American children, 9-18 years of age.

Science.gov (United States)

Mulasi-Pokhriyal, Urvashi; Smith, Chery

2013-01-28

Hmong are one of the immigrant Asian subgroups with increasing rates of obesity, type 2 diabetes and CVD. Despite their population growth in the USA and declining health status, no research has investigated the appropriateness of dietary assessment measures, including FFQ and 24 h dietary recalls among Hmong. The present study compared the nutrient information obtained through a 24 h dietary recall method with that collected using the Block Kid's Food Frequency Questionnaire (Block FFQ) among Hmong-American children (n 335) of 9-18 years of age. For this purpose, two 24 h dietary recalls were collected during non-consecutive days and averaged for comparison. The Block FFQ was administered on the day of the second 24 h recall and the two methodologies were also compared using t tests. Among all children, Block FFQ nutrient estimates for vitamin A, vitamin C and food group servings for vegetables and fruits were significantly higher than those assessed through the 24 h dietary recalls (Pfood group servings for grains and meat and beans were significantly higher among all participants when assessed through the 24 h dietary recalls than through the Block FFQ (Pfood options otherwise missed in the Block FFQ. We recommend the modification of the current Block FFQ to appropriately reflect cultural food/beverage items of the population in interest.

The Prevalence of English Monolingualism and Its Association with Generational Status among Hmong Americans, 2005-2009

OpenAIRE

Yang Sao Xiong; Nao Xiong

2011-01-01

Using the American Community Survey's multi-year (2005-2009) Public Use Microdata Sample, we estimate the prevalence of English monolingualism and statistically analyze the association between English monolingualism and generational status within the U.S. Hmong population. Our findings show that the odds of speaking only English among the second generation is almost three times more compared to the first generation. Data from the 2009 ACS PUMS further indicate that there is a linear an...

Drawing-Voice as a Methodological Tool for Understanding Teachers' Concerns in a Pilot Hmong-Vietnamese Bilingual Education Programme in Vietnam

Science.gov (United States)

Lavoie, Constance; Benson, Carol

2011-01-01

This paper illustrates how a methodological tool called "drawing-voice" can be used to demonstrate qualitatively what statistical and policy data are not able to reveal regarding the educational realities of Hmong minority communities in northern Vietnam, particularly with regard to the role of local language and culture in school. This…

PDF Explained

CERN Document Server

Whitington, John

2011-01-01

An introduction to the PDF file format, threaded through with practical examples - deconstructing, creating and processing PDF files. After exploring how PDF is produced, and how it can be edited with tools from text editors to Ghostscript to PDFTK, readers will learn to deal with problems with PDF files and common error messages.

A novel mutation in two Hmong families broadens the range of STRA6-related malformations to include contractures and camptodactyly.

Science.gov (United States)

Marcadier, Julien L; Mears, Alan J; Woods, Elizabeth A; Fisher, Jamie; Airheart, Cory; Qin, Wen; Beaulieu, Chandree L; Dyment, David A; Innes, A Micheil; Curry, Cynthia J

2016-01-01

PDAC (also termed Matthew Wood) syndrome is a rare, autosomal recessive disorder characterized by pulmonary hypoplasia/aplasia, diaphragmatic defects, bilateral anophthalmia, and cardiac malformations. The disorder is caused by mutations in STRA6, an important regulator of vitamin A and retinoic acid metabolism. We describe six cases from four families of Hmong ancestry, seen over a 30 years period in California. These include: (i) consanguineous siblings with a combination of bilateral anophthalmia, diaphragmatic abnormalities, truncus arteriosus, and/or pulmonary agenesis/hypoplasia; (ii) a singleton fetus with bilateral anophthalmia, pulmonary agenesis, cardiac malformation, and renal hypoplasia; (iii) a sibling pair with a combination of antenatal contractures, camptodactyly, fused palpebral fissures, pulmonary agenesis, and/or truncus arteriosus; (iv) a fetus with bilateral anophthalmia, bushy eyebrows, pulmonary agenesis, heart malformation, and abnormal hand positioning. The phenotypic spectrum of PDAC syndrome has until now not included contractures or camptodactyly. Sequencing of STRA6 in unrelated members of families three and four identified a novel, shared homozygous splice site alteration (c.113 + 3_4delAA) that is predicted to be pathogenic. We hypothesize this may represent a unique disease allele in the Hmong. We also provide a focused review of all published PDAC syndrome cases with confirmed or inferred STRA6 mutations, illustrating the phenotypic and molecular variability that characterizes this disorder. © 2015 Wiley Periodicals, Inc.

Qualitative XRD - use of the PDF for beginners and the evolution of the ICDD

International Nuclear Information System (INIS)

Hubbard, C.R.

2002-01-01

Full text: The Powder Diffraction File (PDF), published by the International Centre for Diffraction Data (ICDD), has traditionally been used for phase identification by x-ray diffraction methods and is widely used in establishing the phases present in reaction, corrosion and decomposition products in fields including mineralogy, materials science, manufacturing and pharmaceuticals. The X-ray diffraction reference patterns of the PDF have been collected and edited by the non profit organization known today as the International Centre for Diffraction Data (ICDD). Recent activities by the ICDD have greatly enhanced the PDF based on collaboration with structural data centers, expanding the pattern producing Grants-in-Aid program, and focussing efforts of task groups of the ICDD Technical Committee. The currently evolving needs of combinatorial scientists, pharmaceutical laboratories, and computational materials science will impact the PDF in coming years. One opportunity is for greater cross-linking of characterization and property databases and the efforts to explore this future will be discussed. This presentation will survey the evolution of the organization and the PDF emphasizing the more recent changes, summarize the contents of the PDF, present highlights of how to use the powder diffraction file for phase identification, and highlight advantages of the forthcoming relational database format for the PDF. Copyright (2002) Australian X-ray Analytical Association Inc

Adobe Acrobat X PDF Bible

CERN Document Server

Padova, Ted

2011-01-01

The classic Acrobat and PDF reference, updated to cover the latest release. Consistently the most authoritative and comprehensive resource on Acrobat and PDF format, this standard reference returns with in-depth coverage of the newest version of Acrobat. Written by bestselling author Ted Padova, this book is packed with real-world insights and techniques gained from Padova's daily use of Acrobat and PDF under deadline constraints. You'll discover everything there is to know about using Acrobat and PDF for print prepress, the Internet, CD-ROMs, and other forms of media.: Popular author Ted Pado

Centers for Disease Control and Prevention

Science.gov (United States)

... PDF file Microsoft PowerPoint file Microsoft Word file Microsoft Excel ... Centers for Disease Control and Prevention Page maintained by: Office of Associate Director of Communication, Division of Public ...

621.pdf | Pdf2006Oct | sadha-na | Indian Academy of Sciences

Indian Academy of Sciences (India)

Home; sadha-na; Pdf2006Oct; 621.pdf. 404! error. The page your are looking for can not be found! Please check the link or use the navigation bar at the top. YouTube; Twitter; Facebook; Blog. Academy News. IAS Logo. 29th Mid-year meeting. Posted on 19 January 2018. The 29th Mid-year meeting of the Academy will be ...

SU-F-T-94: Plan2pdf - a Software Tool for Automatic Plan Report for Philips Pinnacle TPS

Energy Technology Data Exchange (ETDEWEB)

Wu, C [Sutter Medical Foundation, Roseville, CA (United States)

2016-06-15

Purpose: To implement an automatic electronic PDF plan reporting tool for Philips Pinnacle treatment planning system (TPS) Methods: An electronic treatment plan reporting software is developed by us to enable fully automatic PDF report from Pinnacle TPS to external EMR programs such as MOSAIQ. The tool is named “plan2pdf”. plan2pdf is implemented using Pinnacle scripts, Java and UNIX shell scripts, without any external program needed. plan2pdf supports full auto-mode and manual mode reporting. In full auto-mode, with a single mouse click, plan2pdf will generate a detailed Pinnacle plan report in PDF format, which includes customizable cover page, Pinnacle plan summary, orthogonal views through each plan POI and maximum dose point, DRR for each beam, serial transverse views captured throughout the dose grid at a user specified interval, DVH and scorecard windows. The final PDF report is also automatically bookmarked for each section above for convenient plan review. The final PDF report can either be saved on a user specified folder on Pinnacle, or it can be automatically exported to an EMR import folder via a user configured FTP service. In manual capture mode, plan2pdf allows users to capture any Pinnacle plan by full screen, individual window or rectangular ROI drawn on screen. Furthermore, to avoid possible patients’ plan mix-up during auto-mode reporting, a user conflict check feature is included in plan2pdf: it prompts user to wait if another patient is being exported by plan2pdf by another user. Results: plan2pdf is tested extensively and successfully at our institution consists of 5 centers, 15 dosimetrists and 10 physicists, running Pinnacle version 9.10 on Enterprise servers. Conclusion: plan2pdf provides a highly efficient, user friendly and clinical proven platform for all Philips Pinnacle users, to generate a detailed plan report in PDF format for external EMR systems.

SU-F-T-94: Plan2pdf - a Software Tool for Automatic Plan Report for Philips Pinnacle TPS

International Nuclear Information System (INIS)

Wu, C

2016-01-01

Purpose: To implement an automatic electronic PDF plan reporting tool for Philips Pinnacle treatment planning system (TPS) Methods: An electronic treatment plan reporting software is developed by us to enable fully automatic PDF report from Pinnacle TPS to external EMR programs such as MOSAIQ. The tool is named “plan2pdf”. plan2pdf is implemented using Pinnacle scripts, Java and UNIX shell scripts, without any external program needed. plan2pdf supports full auto-mode and manual mode reporting. In full auto-mode, with a single mouse click, plan2pdf will generate a detailed Pinnacle plan report in PDF format, which includes customizable cover page, Pinnacle plan summary, orthogonal views through each plan POI and maximum dose point, DRR for each beam, serial transverse views captured throughout the dose grid at a user specified interval, DVH and scorecard windows. The final PDF report is also automatically bookmarked for each section above for convenient plan review. The final PDF report can either be saved on a user specified folder on Pinnacle, or it can be automatically exported to an EMR import folder via a user configured FTP service. In manual capture mode, plan2pdf allows users to capture any Pinnacle plan by full screen, individual window or rectangular ROI drawn on screen. Furthermore, to avoid possible patients’ plan mix-up during auto-mode reporting, a user conflict check feature is included in plan2pdf: it prompts user to wait if another patient is being exported by plan2pdf by another user. Results: plan2pdf is tested extensively and successfully at our institution consists of 5 centers, 15 dosimetrists and 10 physicists, running Pinnacle version 9.10 on Enterprise servers. Conclusion: plan2pdf provides a highly efficient, user friendly and clinical proven platform for all Philips Pinnacle users, to generate a detailed plan report in PDF format for external EMR systems.

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African Journals Online (AJOL)

2009-09-19

included questions on number of years in practice, number of patients seen per day and the type of practice. knowledge ... paeditricians and other health professionals who work with children. Primary preventive strategies for ..... fammed.musc.edu/fmc/data/pdf/ fmcrfinal/specialtopics.pdf. Accessed. September 19, 2009. 21.

e73.pdf.pdf | 92 | OnlineResources | jgenet | www.ias.ac.in | http ...

Indian Academy of Sciences (India)

Home; public; Volumes; jgen; 092; online; http; www.ias.ac.in; jgenet; OnlineResources; 92; e73.pdf.pdf. 404! error. The page your are looking for can not be found! Please check the link or use the navigation bar at the top. YouTube; Twitter; Facebook; Blog. Academy News. IAS Logo. 29th Mid-year meeting. Posted on 19 ...

Are PDF Documents Accessible?

Directory of Open Access Journals (Sweden)

Mireia Ribera Turró

2008-09-01

Full Text Available Adobe PDF is one of the most widely used formats in scientific communications and in administrative documents. In its latest versions it has incorporated structural tags and improvements that increase its level of accessibility. This article reviews the concept of accessibility in the reading of digital documents and evaluates the accessibility of PDF according to the most widely established standards.

Recent progress in the joint velocity-scalar PDF method

Science.gov (United States)

Anand, M. S.

1995-01-01

This viewgraph presentation discusses joint velocity-scalar PDF method; turbulent combustion modeling issues for gas turbine combustors; PDF calculations for a recirculating flow; stochastic dissipation model; joint PDF calculations for swirling flows; spray calculations; reduced kinetics/manifold methods; parallel processing; and joint PDF focus areas.

Comments on PDF methods

Science.gov (United States)

Chen, J.-Y.

1992-01-01

Viewgraphs are presented on the following topics: the grand challenge of combustion engineering; research of probability density function (PDF) methods at Sandia; experiments of turbulent jet flames (Masri and Dibble, 1988); departures from chemical equilibrium; modeling turbulent reacting flows; superequilibrium OH radical; pdf modeling of turbulent jet flames; scatter plot for CH4 (methane) and O2 (oxygen); methanol turbulent jet flames; comparisons between predictions and experimental data; and turbulent C2H4 jet flames.

PDF4LHC recommendations for LHC Run II

NARCIS (Netherlands)

Butterworth, Jon; Carrazza, Stefano; Cooper-Sarkar, Amanda; Roeck, Albert de; Feltesse, Joel; Forte, Stefano; Gao, Jun; Glazov, Sasha; Huston, Joey; Kassabov, Zahari; McNulty, Ronan; Morsch, Andreas; Nadolsky, Pavel; Radescu, Voica; Rojo, Juan; Thorne, Robert S.

2015-01-01

We provide an updated recommendation for the usage of sets of parton distribution functions (PDFs) and the assessment of PDF and PDF+$\\alpha_s$ uncertainties suitable for applications at the LHC Run II. We review developments since the previous PDF4LHC recommendation, and discuss and compare the new

PDF4LHC recommendations for LHC Run II

CERN Document Server

Butterworth, Jon; Cooper-Sarkar, Amanda; De Roeck, Albert; Feltesse, Joel; Forte, Stefano; Gao, Jun; Glazov, Sasha; Huston, Joey; Kassabov, Zahari; McNulty, Ronan; Morsch, Andreas; Nadolsky, Pavel; Radescu, Voica; Rojo, Juan; Thorne, Robert

2016-01-01

We provide an updated recommendation for the usage of sets of parton distribution functions (PDFs) and the assessment of PDF and PDF+$\\alpha_s$ uncertainties suitable for applications at the LHC Run II. We review developments since the previous PDF4LHC recommendation, and discuss and compare the new generation of PDFs, which include substantial information from experimental data from the Run I of the LHC. We then propose a new prescription for the combination of a suitable subset of the available PDF sets, which is presented in terms of a single combined PDF set. We finally discuss tools which allow for the delivery of this combined set in terms of optimized sets of Hessian eigenvectors or Monte Carlo replicas, and their usage, and provide some examples of their application to LHC phenomenology.

The PDF4LHC Working Group Interim Report

CERN Document Server

Alekhin, Sergey; Ball, Richard D.; Bertone, Valerio; Blumlein, Johannes; Botje, Michiel; Butterworth, Jon; Cerutti, Francesco; Cooper-Sarkar, Amanda; de Roeck, Albert; Del Debbio, Luigi; Feltesse, Joel; Forte, Stefano; Glazov, Alexander; Guffanti, Alberto; Gwenlan, Claire; Huston, Joey; Jimenez-Delgado, Pedro; Lai, Hung-Liang; Latorre, Jose I.; McNulty, Ronan; Nadolsky, Pavel; Olaf Moch, Sven; Pumplin, Jon; Radescu, Voica; Rojo, Juan; Sjostrand, Torbjorn; Stirling, W.J.; Stump, Daniel; Thorne, Robert S.; Ubiali, Maria; Vicini, Alessandro; Watt, Graeme; Yuan, C.-P.

2011-01-01

This document is intended as a study of benchmark cross sections at the LHC (at 7 TeV) at NLO using modern parton distribution functions currently available from the 6 PDF fitting groups that have participated in this exercise. It also contains a succinct user guide to the computation of PDFs, uncertainties and correlations using available PDF sets. A companion note, also submitted to the archive, provides an interim summary of the current recommendations of the PDF4LHC working group for the use of parton distribution functions and of PDF uncertainties at the LHC, for cross section and cross section uncertainty calculations.

The Hmong in Argentina and their ‘convergence’ with the Rankülche

Directory of Open Access Journals (Sweden)

Pasuree Luesakul, Ph.D.

2016-12-01

Full Text Available After the defeat of the United States in Laos in 1975, the Hmong’s resettlement in Argentina during their diaspora from refugee camps in Thailand is a topic that has yet to be fully studied. At the moment of their arrival, the Argentine political and historical context, that is, the military regime during the Dirty War (1976-1983, which was internationally condemned for thousands of cases of violation of human rights, and the Centenary Celebrations of the Conquest of the Desert (1878-1885, when the indigenous population was destroyed under the Europeanization plan of the government, specifically influenced the situation of the newcomers. One of these Argentinian ethnic peoples was the Rankülche who display surprising similarities with the Hmong. This coincidence has suggested a novel perspective from which to study the presence of refugees from Southeast Asia through a comparative study with the Argentine native group, who once occupied the land allocated for the newcomers a century later. In spite of a huge geographical gulf, both ethnic groups share geopolitical and cultural commonalities. They were also considered by the central governments, in Argentina, Thailand and nearby countries, as the ‘other’ in their ‘marginal’ land and, thus, constituted a ‘problem’ of national security that have resulted in them facing different destinies in the nineteenth and twentieth centuries, respectively.

Prospective diagnosis of 2-methylbutyryl-CoA dehydrogenase deficiency in the Hmong population by newborn screening using tandem mass spectrometry

DEFF Research Database (Denmark)

Matern, Dietrich; He, Miao; Berry, Susan A

2003-01-01

but asymptomatic. METHODS: We report 8 additional patients identified by prospective newborn screening using tandem mass spectrometry. RESULTS: Molecular genetic analysis performed for 3 of these patients revealed that all are homozygous for an 1165A>G mutation that causes skipping of exon 10 of the SBCAD gene....... Although there was no obvious consanguinity, all patients belong to the Hmong, an ancient ethnic group that originated in China and constitutes only 0.8% and 0.6% of the Minnesota and Wisconsin population, respectively. Dietary treatment was initiated in the neonatal period. Except for 1 patient who...... developed mild muscle hypotonia, all patients remain asymptomatic at ages ranging from 3 to 14 months of age. CONCLUSIONS: These cases suggest that SBCAD deficiency is another inborn error of metabolism detectable by newborn screening using tandem mass spectrometry. The continued efficacy of long...

Fulltext PDF

Indian Academy of Sciences (India)

the list of essential medicines of the World Health Organization1. Thiamine ... he was just 27!), he published a full paper in the Journal of the American Chemical Society, which for the first time elaborated how ... EML2015_8-May-15.pdf.

Singing as Social Life: Three Perspectives on Kwv Txhiaj from Vietnam

Directory of Open Access Journals (Sweden)

Lonán Ó Briain

2012-01-01

Full Text Available Despite the recent influx of predominantly foreign-produced recordings of Hmong popular music, the vocal art form of kwv txhiaj still plays an important role in the daily lives of manyVietnamese-Hmong people. While previous studies of Vietnamese-Hmong music have tended to focus solely on the musical sounds, this article attempts to illustrate how kwv txhiaj is made meaningful in live performance by contextualizing the musical examples with ethnographic data. Using Timothy Rice’s Time, Place, and Metaphor model (2003 as a theoretical basis, three contrasting case studies of singers and their songs are examined: an elderly woman sings a song she learned at the time of her marriage at the age of nine, a younger woman sings while planting rice in her fields, and another sings about the importance of education at the local government cultural center. Based on fifteen months of fieldwork in northern Vietnam, this study examines a representative sample of performances from the Sa Pa district of Lào Cai province in an attempt to uncover what makes kwv txhiaj a vital aspect of Vietnamese-Hmong culture.

Deep PDF parsing to extract features for detecting embedded malware.

Energy Technology Data Exchange (ETDEWEB)

Munson, Miles Arthur; Cross, Jesse S. (Missouri University of Science and Technology, Rolla, MO)

2011-09-01

The number of PDF files with embedded malicious code has risen significantly in the past few years. This is due to the portability of the file format, the ways Adobe Reader recovers from corrupt PDF files, the addition of many multimedia and scripting extensions to the file format, and many format properties the malware author may use to disguise the presence of malware. Current research focuses on executable, MS Office, and HTML formats. In this paper, several features and properties of PDF Files are identified. Features are extracted using an instrumented open source PDF viewer. The feature descriptions of benign and malicious PDFs can be used to construct a machine learning model for detecting possible malware in future PDF files. The detection rate of PDF malware by current antivirus software is very low. A PDF file is easy to edit and manipulate because it is a text format, providing a low barrier to malware authors. Analyzing PDF files for malware is nonetheless difficult because of (a) the complexity of the formatting language, (b) the parsing idiosyncrasies in Adobe Reader, and (c) undocumented correction techniques employed in Adobe Reader. In May 2011, Esparza demonstrated that PDF malware could be hidden from 42 of 43 antivirus packages by combining multiple obfuscation techniques [4]. One reason current antivirus software fails is the ease of varying byte sequences in PDF malware, thereby rendering conventional signature-based virus detection useless. The compression and encryption functions produce sequences of bytes that are each functions of multiple input bytes. As a result, padding the malware payload with some whitespace before compression/encryption can change many of the bytes in the final payload. In this study we analyzed a corpus of 2591 benign and 87 malicious PDF files. While this corpus is admittedly small, it allowed us to test a system for collecting indicators of embedded PDF malware. We will call these indicators features throughout

PDF and cAMP enhance PER stability in Drosophila clock neurons

Science.gov (United States)

Li, Yue; Guo, Fang; Shen, James; Rosbash, Michael

2014-01-01

The neuropeptide PDF is important for Drosophila circadian rhythms: pdf01 (pdf-null) animals are mostly arrhythmic or short period in constant darkness and have an advanced activity peak in light–dark conditions. PDF contributes to the amplitude, synchrony, as well as the pace of circadian rhythms within clock neurons. PDF is known to increase cAMP levels in PDR receptor (PDFR)-containing neurons. However, there is no known connection of PDF or of cAMP with the Drosophila molecular clockworks. We discovered that the mutant period gene perS ameliorates the phenotypes of pdf-null flies. The period protein (PER) is a well-studied repressor of clock gene transcription, and the perS protein (PERS) has a markedly short half-life. The result therefore suggests that the PDF-mediated increase in cAMP might lengthen circadian period by directly enhancing PER stability. Indeed, increasing cAMP levels and cAMP-mediated protein kinase A (PKA) activity stabilizes PER, in S2 tissue culture cells and in fly circadian neurons. Adding PDF to fly brains in vitro has a similar effect. Consistent with these relationships, a light pulse causes more prominent PER degradation in pdf01 circadian neurons than in wild-type neurons. The results indicate that PDF contributes to clock neuron synchrony by increasing cAMP and PKA, which enhance PER stability and decrease clock speed in intrinsically fast-paced PDFR-containing clock neurons. We further suggest that the more rapid degradation of PERS bypasses PKA regulation and makes the pace of clock neurons more uniform, allowing them to avoid much of the asynchrony caused by the absence of PDF. PMID:24707054

Fulltext PDF

Indian Academy of Sciences (India)

Scholars and Post-Doctoral Fellows (PDF), who work in topology and related areas also to apply. The course consists lectures on the following topics: (a) topology of metric spaces, (b) basic proper- ties of topological spaces, (c) separation axioms and metrization theorems, (d) fundamental groups,. (e) covering spaces and ...

PDF -- new peat technology

Energy Technology Data Exchange (ETDEWEB)

Myreen, P B

1982-12-01

The impact of a large-scale utilization of peat must be assessed in each region separately. As it is completely impractical to transport wet peat over long distances, a PDF plant must be built in the peatland region. Such regions often need economic stimulation. The PDF process can be run independent of season and weather, and thus offers permanent jobs. Dredging the peat layer all at once in a wet state is an operation concentrated on a very small land area. If this area can be drained, it can soon afterwards be forested or used for agricultural purposes. Even if the area from which the peat is removed is left as a wetland, when cleverly done, the ecological effects may be favourable. Peat is a significant energy source in many countries now looking for domestic alternatives to expensive imported fuels. The main constraint on large-scale utilization of peat is its ability to retain moisture. The wet-carbonization process, utilized in a PDF plant and yielding a high-quality peat-derived fuel, is believed to be a technically feasible and economically attractive industrial method of dewatering native peat.

The gamma-ray-flux PDF from galactic halo substructure

International Nuclear Information System (INIS)

Lee, Samuel K.; Ando, Shin'ichiro; Kamionkowski, Marc

2009-01-01

One of the targets of the recently launched Fermi Gamma-ray Space Telescope is a diffuse gamma-ray background from dark-matter annihilation or decay in the Galactic halo. N-body simulations and theoretical arguments suggest that the dark matter in the Galactic halo may be clumped into substructure, rather than smoothly distributed. Here we propose the gamma-ray-flux probability distribution function (PDF) as a probe of substructure in the Galactic halo. We calculate this PDF for a phenomenological model of halo substructure and determine the regions of the substructure parameter space in which the PDF may be distinguished from the PDF for a smooth distribution of dark matter. In principle, the PDF allows a statistical detection of substructure, even if individual halos cannot be detected. It may also allow detection of substructure on the smallest microhalo mass scales, ∼ M ⊕ , for weakly-interacting massive particles (WIMPs). Furthermore, it may also provide a method to measure the substructure mass function. However, an analysis that assumes a typical halo substructure model and a conservative estimate of the diffuse background suggests that the substructure PDF may not be detectable in the lifespan of Fermi in the specific case that the WIMP is a neutralino. Nevertheless, for a large range of substructure, WIMP annihilation, and diffuse background models, PDF analysis may provide a clear signature of substructure

Fulltext PDF

Indian Academy of Sciences (India)

ways to track turtles both through space and time. The comparison of ... as a single nesting population was reduced to a few hundred individuals in the 1970s. However .... turtles spent some part of the year in those coastal waters. However ..... The newsletters are available online in PDF format and a limited number of.

Direct photon production and PDF fits reloaded

NARCIS (Netherlands)

Campbell, John M.; Rojo, Juan; Slade, Emma; Williams, Ciaran

2018-01-01

Direct photon production in hadronic collisions provides a handle on the gluon PDF by means of the QCD Compton scattering process. In this work we revisit the impact of direct photon production on a global PDF analysis, motivated by the recent availability of the next-to-next-to-leading (NNLO)

New frontiers in PDF determination

CERN Multimedia

CERN. Geneva

2016-01-01

Parton Distribution Functions (PDFs) are a crucial input at the LHC, their uncertainty often being the limiting factor in the accuracy of theoretical predictions. At the same time the LHC is delivering a number of precise measurements that have the potential to greatly constrain these functions. I will give an overview on the theory behind and on the state of the art of PDF determination. I will then mention the new theoretical and methodological challenges in modern PDF fits and explore the precision frontiers opened by the accuracy of the LHC data.

Fulltext PDF

Indian Academy of Sciences (India)

Admin

B ackground. T he sub-title of this article is borrow ed from tw o dis- ..... theory w hich so starkly opposed the B iblicalversion of creation. A second .... R eca p itu la - tion and C onclusion, sum m arises the thesis { w hich, in ...... Education, 2002; http://www.muslimheritage.com/uploads/ibnsina.pdf) for an early example of ...

Design and application of PDF model for extracting

Science.gov (United States)

Xiong, Lei

2013-07-01

In order to change the steps of contributions in editorial department system from two steps to one, this paper advocates that the technology of extracting the information of PDF files should be transplanted from PDF reader into IEEE Xplore contribution system and that it should be combined with uploading in batch skillfully to enable editors to upload PDF files about 1GB in batch for once. Computers will extract the information of the title, author, address, mailbox, abstract and key words of thesis voluntarily for later retrieval so as to save plenty of labor, material and finance for editorial department.

Navigating Multiple Worlds: A Qualitative Study of the Lived Experiences of Hmong Women Leaders

Directory of Open Access Journals (Sweden)

Lena Moua

2012-01-01

Full Text Available This article presents the findings from a narrative study that examined the leadership development and pathways of nine prominent Hmong American women leaders from Minnesota and California. Each of these women was able to break through the cultural and gender glass ceiling to become positional and influential leaders in mainstream American society. The study focused on the factors that contributed to the participants leadership development; strategies used in attaining and maintaining leadership roles; and barriers each participant encountered on her path to becoming a leader. Important findings included the impact of poverty, the prominent role of education, inner strength the women possessed, importance of networking and support systems, and strong role models. Other factors included familial responsibilities, gender disparities, racism and ageism. The conceptual frameworks of Belenky, Clinchy, Goldberger and Tarule (1986, and Alon and Higgins (2005, were utilized to guide the analysis and presentation of each participants life journey, and show the intersections between culture and feminist epistemology. The narrative case study approach included in-depth interviews, collective story mapping and re-narration techniques to explore the lives of these women leaders. One overarching goal of the study and this article is to create a greater understanding of complex issues and impediments associated with leadership development, with the hope of beginning a dialog that will help facilitate policy changes regarding developing and supporting minority women in leadership roles.

Navigating Multiple Worlds: A Qualitative Study of the Lived Experiences of Hmong Women Leaders

Directory of Open Access Journals (Sweden)

Lena Moua

2012-01-01

Full Text Available This article presents the findings from a narrative study that examined the leadership development and pathways of nine prominent Hmong American women leaders from Minnesota and California. Each of these women was able to break through the cultural and gender glass ceiling to become positional and influential leaders in mainstream American society. The study focused on the factors that contributed to the participants’ leadership development; strategies used in attaining and maintaining leadership roles; and barriers each participant encountered on her path to becoming a leader. Important findings included the impact of poverty, the prominent role of education, inner strength the women possessed, importance of networking and support systems, and strong role models. Other factors included familial responsibilities, gender disparities, racism and ageism. The conceptual frameworks of Belenky, Clinchy, Goldberger and Tarule (1986, and Alon and Higgins (2005, were utilized to guide the analysis and presentation of each participant’s life journey, and show the intersections between culture and feminist epistemology. The narrative case study approach included in-depth interviews, collective story mapping and re-narration techniques to explore the lives of these women leaders. One overarching goal of the study and this article is to create a greater understanding of complex issues and impediments associated with leadership development, with the hope of beginning a dialog that will help facilitate policy changes regarding developing and supporting minority women in leadership roles.

Fulltext PDF

Indian Academy of Sciences (India)

Sandeep M., Sun F., Liu F., Li J., David P. B. and Yue G. H. 2012 Novel polymorphic microsatellites from Florida red tilapia and cross- species amplification in Mozambique and Nile tilapia. J. Genet. 91, e97–e99. Online only: http://www.ias.ac.in/jgenet/OnlineResources/. 91/e97.pdf. Xin C., Yu D., Peng J., Hu H., Xing Y. and ...

Application of PDF methods to compressible turbulent flows

Science.gov (United States)

Delarue, B. J.; Pope, S. B.

1997-09-01

A particle method applying the probability density function (PDF) approach to turbulent compressible flows is presented. The method is applied to several turbulent flows, including the compressible mixing layer, and good agreement is obtained with experimental data. The PDF equation is solved using a Lagrangian/Monte Carlo method. To accurately account for the effects of compressibility on the flow, the velocity PDF formulation is extended to include thermodynamic variables such as the pressure and the internal energy. The mean pressure, the determination of which has been the object of active research over the last few years, is obtained directly from the particle properties. It is therefore not necessary to link the PDF solver with a finite-volume type solver. The stochastic differential equations (SDE) which model the evolution of particle properties are based on existing second-order closures for compressible turbulence, limited in application to low turbulent Mach number flows. Tests are conducted in decaying isotropic turbulence to compare the performances of the PDF method with the Reynolds-stress closures from which it is derived, and in homogeneous shear flows, at which stage comparison with direct numerical simulation (DNS) data is conducted. The model is then applied to the plane compressible mixing layer, reproducing the well-known decrease in the spreading rate with increasing compressibility. It must be emphasized that the goal of this paper is not as much to assess the performance of models of compressibility effects, as it is to present an innovative and consistent PDF formulation designed for turbulent inhomogeneous compressible flows, with the aim of extending it further to deal with supersonic reacting flows.

Pressure algorithm for elliptic flow calculations with the PDF method

Science.gov (United States)

Anand, M. S.; Pope, S. B.; Mongia, H. C.

1991-01-01

An algorithm to determine the mean pressure field for elliptic flow calculations with the probability density function (PDF) method is developed and applied. The PDF method is a most promising approach for the computation of turbulent reacting flows. Previous computations of elliptic flows with the method were in conjunction with conventional finite volume based calculations that provided the mean pressure field. The algorithm developed and described here permits the mean pressure field to be determined within the PDF calculations. The PDF method incorporating the pressure algorithm is applied to the flow past a backward-facing step. The results are in good agreement with data for the reattachment length, mean velocities, and turbulence quantities including triple correlations.

A multi-scalar PDF approach for LES of turbulent spray combustion

Science.gov (United States)

Raman, Venkat; Heye, Colin

2011-11-01

A comprehensive joint-scalar probability density function (PDF) approach is proposed for large eddy simulation (LES) of turbulent spray combustion and tests are conducted to analyze the validity and modeling requirements. The PDF method has the advantage that the chemical source term appears closed but requires models for the small scale mixing process. A stable and consistent numerical algorithm for the LES/PDF approach is presented. To understand the modeling issues in the PDF method, direct numerical simulation of a spray flame at three different fuel droplet Stokes numbers and an equivalent gaseous flame are carried out. Assumptions in closing the subfilter conditional diffusion term in the filtered PDF transport equation are evaluated for various model forms. In addition, the validity of evaporation rate models in high Stokes number flows is analyzed.

A compression algorithm for the combination of PDF sets

NARCIS (Netherlands)

Carrazza, Stefano; Latorre, Jose I.; Rojo, Juan; Watt, Graeme

2015-01-01

The current PDF4LHC recommendation to estimate uncertainties due to parton distribution functions (PDFs) in theoretical predictions for LHC processes involves the combination of separate predictions computed using PDF sets from different groups, each of which comprises a relatively large number of

PDF Modeling of Turbulent Combustion

National Research Council Canada - National Science Library

Pope, Stephen B

2006-01-01

.... The PDF approach to turbulent combustion has the advantages of fully representing the turbulent fluctuations of species and temperature, and of allowing realistic combustion chemistry to be implemented...

Evolution of the concentration PDF in random environments modeled by global random walk

Science.gov (United States)

Suciu, Nicolae; Vamos, Calin; Attinger, Sabine; Knabner, Peter

2013-04-01

The evolution of the probability density function (PDF) of concentrations of chemical species transported in random environments is often modeled by ensembles of notional particles. The particles move in physical space along stochastic-Lagrangian trajectories governed by Ito equations, with drift coefficients given by the local values of the resolved velocity field and diffusion coefficients obtained by stochastic or space-filtering upscaling procedures. A general model for the sub-grid mixing also can be formulated as a system of Ito equations solving for trajectories in the composition space. The PDF is finally estimated by the number of particles in space-concentration control volumes. In spite of their efficiency, Lagrangian approaches suffer from two severe limitations. Since the particle trajectories are constructed sequentially, the demanded computing resources increase linearly with the number of particles. Moreover, the need to gather particles at the center of computational cells to perform the mixing step and to estimate statistical parameters, as well as the interpolation of various terms to particle positions, inevitably produce numerical diffusion in either particle-mesh or grid-free particle methods. To overcome these limitations, we introduce a global random walk method to solve the system of Ito equations in physical and composition spaces, which models the evolution of the random concentration's PDF. The algorithm consists of a superposition on a regular lattice of many weak Euler schemes for the set of Ito equations. Since all particles starting from a site of the space-concentration lattice are spread in a single numerical procedure, one obtains PDF estimates at the lattice sites at computational costs comparable with those for solving the system of Ito equations associated to a single particle. The new method avoids the limitations concerning the number of particles in Lagrangian approaches, completely removes the numerical diffusion, and

PDF approach for turbulent scalar field: Some recent developments

Science.gov (United States)

Gao, Feng

1993-01-01

The probability density function (PDF) method has been proven a very useful approach in turbulence research. It has been particularly effective in simulating turbulent reacting flows and in studying some detailed statistical properties generated by a turbulent field There are, however, some important questions that have yet to be answered in PDF studies. Our efforts in the past year have been focused on two areas. First, a simple mixing model suitable for Monte Carlo simulations has been developed based on the mapping closure. Secondly, the mechanism of turbulent transport has been analyzed in order to understand the recently observed abnormal PDF's of turbulent temperature fields generated by linear heat sources.

They Just Respect You for Who You Are: Contributors to Educator Positive Youth Development Promotion for Somali, Latino, and Hmong Students.

Science.gov (United States)

Allen, Michele L; Rosas-Lee, Maira; Ortega, Luis; Hang, Mikow; Pergament, Shannon; Pratt, Rebekah

2016-02-01

Youth from immigrant communities may experience barriers to connecting with schools and teachers, potentially undermining academic achievement and healthy youth development. This qualitative study aimed to understand how educators serving Somali, Latino, and Hmong (SLH) youth can best promote educator-student connectedness and positive youth development, by exploring the perspectives of teachers, youth workers, and SLH youth, using a community based participatory research approach. We conducted four focus groups with teachers, 18 key informant interviews with adults working with SLH youth, and nine focus groups with SLH middle and high school students. Four themes emerged regarding facilitators to educators promoting positive youth development in schools: (1) an authoritative teaching approach where teachers hold high expectations for student behavior and achievement, (2) building trusting educator-student relationships, (3) conveying respect for students as individuals, and (4) a school infrastructure characterized by a supportive and inclusive environment. Findings suggest a set of skills and educator-student interactions that may promote positive youth development and increase student-educator connectedness for SLH youth in public schools.

The Use of PDF/A in Digital Archives: A Case Study from Archaeology

Directory of Open Access Journals (Sweden)

Tim N. L. Evans

2014-10-01

Full Text Available In recent years the Portable Document Format (PDF has become a ubiquitous format in the exchange of documents; in 2005 the PDF/A profile was defined in order to meet long term accessibility needs, and has accordingly come to be regarded as a long-term archiving strategy for PDF files. In the field of archaeology, a growing number of PDF files – containing the detailed results of fieldwork and research – are beginning to be deposited with digital archives such as the Archaeology Data Service (ADS. In the ADS’ experience, the use of PDF/A has had benefits as well as drawbacks: the majority of PDF reports are now in a standard format better suited to longer-term access, however migrating to PDF/A and managing and ensuring reuse of these files is intensive, and fraught with potential pitfalls. Of these, perhaps the most serious has been an unreliability in PDF/A conformance by the wide range of tools and software now available. There are also practical and more theoretical implications for reuse which, as our discipline of archaeology alongside so many others rapidly becomes digitized, presents us with a large corpus of ‘data’ that is human readable, but may not be amenable to machine-based technologies such as NLP. It may be argued that these factors effectively undermine some of the perceived cost benefit of moving from paper to digital, as well as the longer-term sustainability of PDF/A within digital archives.

Comments on the present state and future directions of PDF methods

Science.gov (United States)

Obrien, E. E.

1992-01-01

The one point probability density function (PDF) method is examined in light of its use in actual engineering problems. The PDF method, although relatively complicated, appears to be the only format available to handle the nonlinear stochastic difficulties caused by typical reaction kinetics. Turbulence modeling, if it is to play a central role in combustion modeling, has to be integrated with the chemistry in a way which produces accurate numerical solutions to combustion problems. It is questionable whether the development of turbulent models in isolation from the peculiar statistics of reactant concentrations is a fruitful line of development as far as propulsion is concerned. There are three issues for which additional viewgraphs are prepared: the one point pdf method; the amplitude mapping closure; and a hybrid strategy for replacing a full two point pdf treatment of reacting flows by a single point pdf and correlation functions. An appeal is made for the establishment of an adequate data base for compressible flow with reactions for Mach numbers of unity or higher.

Direct photon production and PDF fits reloaded

Energy Technology Data Exchange (ETDEWEB)

Campbell, John M.; Rojo, Juan; Slade, Emma; Williams, Ciaran

2018-02-08

Direct photon production in hadronic collisions provides a handle on the gluon PDF by means of the QCD Compton scattering process. In this work we revisit the impact of direct photon production on a global PDF analysis, motivated by the recent availability of the next-to-next-to-leading (NNLO) calculation for this process. We demonstrate that the inclusion of NNLO QCD and leading-logarithmic electroweak corrections leads to a good quantitative agreement with the ATLAS measurements at 8 TeV and 13 TeV, except for the most forward rapidity region in the former case. By including the ATLAS 8 TeV direct photon production data in the NNPDF3.1 NNLO global analysis, we assess its impact on the medium-x gluon. We also study the constraining power of the direct photon production measurements on PDF fits based on different datasets, in particular on the NNPDF3.1 no-LHC and collider-only fits. We also present updated NNLO theoretical predictions for direct photon production at 13 TeV that include the constraints from the 8 TeV measurements.

A time dependent mixing model to close PDF equations for transport in heterogeneous aquifers

Science.gov (United States)

Schüler, L.; Suciu, N.; Knabner, P.; Attinger, S.

2016-10-01

Probability density function (PDF) methods are a promising alternative to predicting the transport of solutes in groundwater under uncertainty. They make it possible to derive the evolution equations of the mean concentration and the concentration variance, used in moment methods. The mixing model, describing the transport of the PDF in concentration space, is essential for both methods. Finding a satisfactory mixing model is still an open question and due to the rather elaborate PDF methods, a difficult undertaking. Both the PDF equation and the concentration variance equation depend on the same mixing model. This connection is used to find and test an improved mixing model for the much easier to handle concentration variance. Subsequently, this mixing model is transferred to the PDF equation and tested. The newly proposed mixing model yields significantly improved results for both variance modelling and PDF modelling.

A Lagrangian mixing frequency model for transported PDF modeling

Science.gov (United States)

Turkeri, Hasret; Zhao, Xinyu

2017-11-01

In this study, a Lagrangian mixing frequency model is proposed for molecular mixing models within the framework of transported probability density function (PDF) methods. The model is based on the dissipations of mixture fraction and progress variables obtained from Lagrangian particles in PDF methods. The new model is proposed as a remedy to the difficulty in choosing the optimal model constant parameters when using conventional mixing frequency models. The model is implemented in combination with the Interaction by exchange with the mean (IEM) mixing model. The performance of the new model is examined by performing simulations of Sandia Flame D and the turbulent premixed flame from the Cambridge stratified flame series. The simulations are performed using the pdfFOAM solver which is a LES/PDF solver developed entirely in OpenFOAM. A 16-species reduced mechanism is used to represent methane/air combustion, and in situ adaptive tabulation is employed to accelerate the finite-rate chemistry calculations. The results are compared with experimental measurements as well as with the results obtained using conventional mixing frequency models. Dynamic mixing frequencies are predicted using the new model without solving additional transport equations, and good agreement with experimental data is observed.

IT Department User Survey PDF Usage Report

CERN Document Server

Jones, Pete

2017-01-01

During 2016 the IT-CDA group carried out a study of IT users and their working environments and habits with the aim of understanding the user community better. This project involved interviews with users from different working backgrounds and an online survey containing questions of user devices and software preferences. A section of the questions was aimed at understanding how people handle PDF documents and this note analyses the responses to these. This analysis will help IT-CDA to better understand the PDF requirements and so help us to improve the services that rely on these documents.

PDF methods for turbulent reactive flows

Science.gov (United States)

Hsu, Andrew T.

1995-01-01

Viewgraphs are presented on computation of turbulent combustion, governing equations, closure problem, PDF modeling of turbulent reactive flows, validation cases, current projects, and collaboration with industry and technology transfer.

Extra Dimensions: 3D in PDF Documentation

International Nuclear Information System (INIS)

Graf, Norman A

2012-01-01

Experimental science is replete with multi-dimensional information which is often poorly represented by the two dimensions of presentation slides and print media. Past efforts to disseminate such information to a wider audience have failed for a number of reasons, including a lack of standards which are easy to implement and have broad support. Adobe's Portable Document Format (PDF) has in recent years become the de facto standard for secure, dependable electronic information exchange. It has done so by creating an open format, providing support for multiple platforms and being reliable and extensible. By providing support for the ECMA standard Universal 3D (U3D) and the ISO PRC file format in its free Adobe Reader software, Adobe has made it easy to distribute and interact with 3D content. Until recently, Adobe's Acrobat software was also capable of incorporating 3D content into PDF files from a variety of 3D file formats, including proprietary CAD formats. However, this functionality is no longer available in Acrobat X, having been spun off to a separate company. Incorporating 3D content now requires the additional purchase of a separate plug-in. In this talk we present alternatives based on open source libraries which allow the programmatic creation of 3D content in PDF format. While not providing the same level of access to CAD files as the commercial software, it does provide physicists with an alternative path to incorporate 3D content into PDF files from such disparate applications as detector geometries from Geant4, 3D data sets, mathematical surfaces or tesselated volumes.

Edgeworth Expansion Based Model for the Convolutional Noise pdf

Directory of Open Access Journals (Sweden)

Yonatan Rivlin

2014-01-01

Full Text Available Recently, the Edgeworth expansion up to order 4 was used to represent the convolutional noise probability density function (pdf in the conditional expectation calculations where the source pdf was modeled with the maximum entropy density approximation technique. However, the applied Lagrange multipliers were not the appropriate ones for the chosen model for the convolutional noise pdf. In this paper we use the Edgeworth expansion up to order 4 and up to order 6 to model the convolutional noise pdf. We derive the appropriate Lagrange multipliers, thus obtaining new closed-form approximated expressions for the conditional expectation and mean square error (MSE as a byproduct. Simulation results indicate hardly any equalization improvement with Edgeworth expansion up to order 4 when using optimal Lagrange multipliers over a nonoptimal set. In addition, there is no justification for using the Edgeworth expansion up to order 6 over the Edgeworth expansion up to order 4 for the 16QAM and easy channel case. However, Edgeworth expansion up to order 6 leads to improved equalization performance compared to the Edgeworth expansion up to order 4 for the 16QAM and hard channel case as well as for the case where the 64QAM is sent via an easy channel.

PDF fit in the fixed-flavour-number scheme

International Nuclear Information System (INIS)

Alekhin, S.; Bluemlein, J.; Moch, S.

2012-02-01

We discuss the heavy-quark contribution to deep inelastic scattering in the scheme with n f =3;4;5 fixed flavors. Based on the recent ABM11 PDF analysis of world data for deep-inelastic scattering and fixed-target data for the Drell-Yan process with the running-mass definition for heavy quarks we show that fixed flavor number scheme is sufficient for describing the deep-inelastic-scattering data in the entire kinematic range. We compare with other PDF sets and comment on the implications for measuring the strong coupling constant α s (M Z ).

A robust, efficient and accurate β- pdf integration algorithm in nonpremixed turbulent combustion

International Nuclear Information System (INIS)

Liu, H.; Lien, F.S.; Chui, E.

2005-01-01

Among many presumed-shape pdf approaches, the presumed β-function pdf is widely used in nonpremixed turbulent combustion models in the literature. However, singularity difficulties at Z = 0 and 1, Z being the mixture fraction, may be encountered in the numerical integration of the b-function pdf and there are few publications addressing this issue to date. The present study proposes an efficient, robust and accurate algorithm to overcome these numerical difficulties. The present treatment of the β-pdf integration is firstly used in the Burke-Schumann solution in conjunction with the k - ε turbulent model in the case of CH 4 /H 2 bluff-body jets and flames. Afterward it is extended to a more complex model, the laminar flamelet model, for the same flow. Numerical results obtained by using the proposed β-pdf integration method are compared to experimental values of the velocity field, temperature and constituent mass fraction to illustrate the efficiency and accuracy of the present method. (author)

A case study of culturally appropriate conservation education

Science.gov (United States)

David N. Bengston; Michele Schermann

2016-01-01

Create culturally appropriate conservation education materials for Hmong Americans, including new refugees and elders with little proficiency in English, as well as the broader, multigenerational Hmong community. This case study discusses an organizational response from the USDA Forest Service, in partnership with others, to better serve the Hmong American community....

PDF fit in the fixed-flavour-number scheme

Energy Technology Data Exchange (ETDEWEB)

Alekhin, S. [Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany); Institute for High Energy Physics, Moscow (Russian Federation); Bluemlein, J.; Moch, S. [Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany)

2012-02-15

We discuss the heavy-quark contribution to deep inelastic scattering in the scheme with n{sub f}=3;4;5 fixed flavors. Based on the recent ABM11 PDF analysis of world data for deep-inelastic scattering and fixed-target data for the Drell-Yan process with the running-mass definition for heavy quarks we show that fixed flavor number scheme is sufficient for describing the deep-inelastic-scattering data in the entire kinematic range. We compare with other PDF sets and comment on the implications for measuring the strong coupling constant {alpha}{sub s}(M{sub Z}).

Sparse PDF maps for non-linear multi-resolution image operations

KAUST Repository

Hadwiger, Markus

2012-11-01

We introduce a new type of multi-resolution image pyramid for high-resolution images called sparse pdf maps (sPDF-maps). Each pyramid level consists of a sparse encoding of continuous probability density functions (pdfs) of pixel neighborhoods in the original image. The encoded pdfs enable the accurate computation of non-linear image operations directly in any pyramid level with proper pre-filtering for anti-aliasing, without accessing higher or lower resolutions. The sparsity of sPDF-maps makes them feasible for gigapixel images, while enabling direct evaluation of a variety of non-linear operators from the same representation. We illustrate this versatility for antialiased color mapping, O(n) local Laplacian filters, smoothed local histogram filters (e.g., median or mode filters), and bilateral filters. © 2012 ACM.

Sparse PDF Volumes for Consistent Multi-Resolution Volume Rendering

KAUST Repository

Sicat, Ronell Barrera

2014-12-31

This paper presents a new multi-resolution volume representation called sparse pdf volumes, which enables consistent multi-resolution volume rendering based on probability density functions (pdfs) of voxel neighborhoods. These pdfs are defined in the 4D domain jointly comprising the 3D volume and its 1D intensity range. Crucially, the computation of sparse pdf volumes exploits data coherence in 4D, resulting in a sparse representation with surprisingly low storage requirements. At run time, we dynamically apply transfer functions to the pdfs using simple and fast convolutions. Whereas standard low-pass filtering and down-sampling incur visible differences between resolution levels, the use of pdfs facilitates consistent results independent of the resolution level used. We describe the efficient out-of-core computation of large-scale sparse pdf volumes, using a novel iterative simplification procedure of a mixture of 4D Gaussians. Finally, our data structure is optimized to facilitate interactive multi-resolution volume rendering on GPUs.

Joint PDF modelling of turbulent flow and dispersion in an urban street canyon

OpenAIRE

Bakosi, J.; Franzese, P.; Boybeyi, Z.

2010-01-01

The joint probability density function (PDF) of turbulent velocity and concentration of a passive scalar in an urban street canyon is computed using a newly developed particle-in-cell Monte Carlo method. Compared to moment closures, the PDF methodology provides the full one-point one-time PDF of the underlying fields containing all higher moments and correlations. The small-scale mixing of the scalar released from a concentrated source at the street level is modelled by the interaction by exc...

Layout-aware text extraction from full-text PDF of scientific articles.

Science.gov (United States)

Ramakrishnan, Cartic; Patnia, Abhishek; Hovy, Eduard; Burns, Gully Apc

2012-05-28

The Portable Document Format (PDF) is the most commonly used file format for online scientific publications. The absence of effective means to extract text from these PDF files in a layout-aware manner presents a significant challenge for developers of biomedical text mining or biocuration informatics systems that use published literature as an information source. In this paper we introduce the 'Layout-Aware PDF Text Extraction' (LA-PDFText) system to facilitate accurate extraction of text from PDF files of research articles for use in text mining applications. Our paper describes the construction and performance of an open source system that extracts text blocks from PDF-formatted full-text research articles and classifies them into logical units based on rules that characterize specific sections. The LA-PDFText system focuses only on the textual content of the research articles and is meant as a baseline for further experiments into more advanced extraction methods that handle multi-modal content, such as images and graphs. The system works in a three-stage process: (1) Detecting contiguous text blocks using spatial layout processing to locate and identify blocks of contiguous text, (2) Classifying text blocks into rhetorical categories using a rule-based method and (3) Stitching classified text blocks together in the correct order resulting in the extraction of text from section-wise grouped blocks. We show that our system can identify text blocks and classify them into rhetorical categories with Precision1 = 0.96% Recall = 0.89% and F1 = 0.91%. We also present an evaluation of the accuracy of the block detection algorithm used in step 2. Additionally, we have compared the accuracy of the text extracted by LA-PDFText to the text from the Open Access subset of PubMed Central. We then compared this accuracy with that of the text extracted by the PDF2Text system, 2commonly used to extract text from PDF. Finally, we discuss preliminary error analysis for

Layout-aware text extraction from full-text PDF of scientific articles

Directory of Open Access Journals (Sweden)

Ramakrishnan Cartic

2012-05-01

Full Text Available Abstract Background The Portable Document Format (PDF is the most commonly used file format for online scientific publications. The absence of effective means to extract text from these PDF files in a layout-aware manner presents a significant challenge for developers of biomedical text mining or biocuration informatics systems that use published literature as an information source. In this paper we introduce the ‘Layout-Aware PDF Text Extraction’ (LA-PDFText system to facilitate accurate extraction of text from PDF files of research articles for use in text mining applications. Results Our paper describes the construction and performance of an open source system that extracts text blocks from PDF-formatted full-text research articles and classifies them into logical units based on rules that characterize specific sections. The LA-PDFText system focuses only on the textual content of the research articles and is meant as a baseline for further experiments into more advanced extraction methods that handle multi-modal content, such as images and graphs. The system works in a three-stage process: (1 Detecting contiguous text blocks using spatial layout processing to locate and identify blocks of contiguous text, (2 Classifying text blocks into rhetorical categories using a rule-based method and (3 Stitching classified text blocks together in the correct order resulting in the extraction of text from section-wise grouped blocks. We show that our system can identify text blocks and classify them into rhetorical categories with Precision1 = 0.96% Recall = 0.89% and F1 = 0.91%. We also present an evaluation of the accuracy of the block detection algorithm used in step 2. Additionally, we have compared the accuracy of the text extracted by LA-PDFText to the text from the Open Access subset of PubMed Central. We then compared this accuracy with that of the text extracted by the PDF2Text system, 2commonly used to extract text from PDF

PDF methods for combustion in high-speed turbulent flows

Science.gov (United States)

Pope, Stephen B.

1995-01-01

This report describes the research performed during the second year of this three-year project. The ultimate objective of the project is extend the applicability of probability density function (pdf) methods from incompressible to compressible turbulent reactive flows. As described in subsequent sections, progress has been made on: (1) formulation and modelling of pdf equations for compressible turbulence, in both homogeneous and inhomogeneous inert flows; and (2) implementation of the compressible model in various flow configurations, namely decaying isotropic turbulence, homogeneous shear flow and plane mixing layer.

Climate Prediction Center: ENSO Diagnostic Discussion

Science.gov (United States)

Organization Search Go Search the CPC Go Expert Assessments ENSO Diagnostic Discussion Archive About Us Our Assessments > ENSO Diagnostic Discussion El Niño/Southern Oscillation (ENSO) Diagnostic Discussion PDF : English Version Spanish Version Adobe PDF Reader (Click icon for Adobe PDF Reader) Word: English Version

The impact of the photon PDF and electroweak corrections on t anti t distributions

International Nuclear Information System (INIS)

Pagani, D.; Tsinikos, I.; Zaro, M.

2016-01-01

We discuss the impact of EW corrections on differential distributions in top-quark pair production at the LHC and future hadron colliders, focussing on the effects of initial-state photons. Performing a calculation at Next-to-Leading Order QCD+EW accuracy, we investigate in detail the impact of photon-initiated channels on central values as well as PDF and scale uncertainties, both at order α s α and α s 2 α. We present predictions at 13 and 100 TeV, and provide results for the 8 TeV differential measurements performed by ATLAS and CMS. A thorough comparison of results obtained with the NNPDF2.3QED and CT14QED PDF sets is performed. While contributions due to the photon PDF are negligible with CT14QED, this is not the case for NNPDF2.3QED, where such contributions are sizeable and show large PDF uncertainties. On the one hand, we show that differential observables in top-pair production, in particular top-quark and t anti t rapidities, can be used to improve the determination of the photon PDF within the NNPDF approach. On the other hand, with current PDF sets, we demonstrate the necessity of including EW corrections and photon-induced contributions for a correct determination of both the central value and the uncertainties of theoretical predictions. (orig.)

The impact of the photon PDF and electroweak corrections on t anti t distributions

Energy Technology Data Exchange (ETDEWEB)

Pagani, D.; Tsinikos, I. [Universite Catholique de Louvain, Centre for Cosmology, Particle Physics and Phenomenology (CP3), Louvain-la-Neuve (Belgium); Zaro, M. [Sorbonne Universites, UPMC University Paris 06, UMR 589, LPTHE, Paris (France); CNRS, UMR 7589, LPTHE, Paris (France)

2016-09-15

We discuss the impact of EW corrections on differential distributions in top-quark pair production at the LHC and future hadron colliders, focussing on the effects of initial-state photons. Performing a calculation at Next-to-Leading Order QCD+EW accuracy, we investigate in detail the impact of photon-initiated channels on central values as well as PDF and scale uncertainties, both at order α{sub s}α and α{sub s}{sup 2}α. We present predictions at 13 and 100 TeV, and provide results for the 8 TeV differential measurements performed by ATLAS and CMS. A thorough comparison of results obtained with the NNPDF2.3QED and CT14QED PDF sets is performed. While contributions due to the photon PDF are negligible with CT14QED, this is not the case for NNPDF2.3QED, where such contributions are sizeable and show large PDF uncertainties. On the one hand, we show that differential observables in top-pair production, in particular top-quark and t anti t rapidities, can be used to improve the determination of the photon PDF within the NNPDF approach. On the other hand, with current PDF sets, we demonstrate the necessity of including EW corrections and photon-induced contributions for a correct determination of both the central value and the uncertainties of theoretical predictions. (orig.)

The PDF method for turbulent combustion

Science.gov (United States)

Pope, S. B.

1991-01-01

Probability Density Function (PDF) methods provide a means of calculating the properties of turbulent reacting flows. They have been successfully applied to many turbulent flames, including some with finite rate kinetic effects. Here the methods are reviewed with an emphasis on computational issues and their application to turbulent combustion.

High-pressure pair distribution function (PDF) measurement using high-energy focused x-ray beam

Energy Technology Data Exchange (ETDEWEB)

Hong, Xinguo, E-mail: xhong@bnl.gov; Weidner, Donald J. [Mineral Physics Institute, Stony Brook University, Stony Brook, NY 11794 (United States); Ehm, Lars [Mineral Physics Institute, Stony Brook University, Stony Brook, NY 11794 (United States); National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973 (United States); Zhong, Zhong; Ghose, Sanjit [National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973 (United States); Duffy, Thomas S. [Department of Geosciences, Princeton University, Princeton, NJ 08544 (United States)

2016-07-27

In this paper, we report recent development of the high-pressure pair distribution function (HP-PDF) measurement technique using a focused high-energy X-ray beam coupled with a diamond anvil cell (DAC). The focusing optics consist of a sagittally bent Laue monochromator and Kirkpatrick-Baez (K–B) mirrors. This combination provides a clean high-energy X-ray beam suitable for HP-PDF research. Demonstration of the HP-PDF technique for nanocrystalline platinum under quasi-hydrostatic condition above 30 GPa is presented.

Reference and PDF-manager software: complexities, support and workflow.

Science.gov (United States)

Mead, Thomas L; Berryman, Donna R

2010-10-01

In the past, librarians taught reference management by training library users to use established software programs such as RefWorks or EndNote. In today's environment, there is a proliferation of Web-based programs that are being used by library clientele that offer a new twist on the well-known reference management programs. Basically, these new programs are PDF-manager software (e.g., Mendeley or Papers). Librarians are faced with new questions, issues, and concerns, given the new workflows and pathways that these PDF-manager programs present. This article takes a look at some of those.

Scalar and joint velocity-scalar PDF modelling of near-wall turbulent heat transfer

International Nuclear Information System (INIS)

Pozorski, Jacek; Waclawczyk, Marta; Minier, Jean-Pierre

2004-01-01

The temperature field in a heated turbulent flow is considered as a dynamically passive scalar. The probability density function (PDF) method with down to the wall integration is explored and new modelling proposals are put forward, including the explicit account for the molecular transport terms. Two variants of the approach are considered: first, the scalar PDF method with the use of externally-provided turbulence statistics; and second, the joint (stand-alone) velocity-scalar PDF method where a near-wall model for dynamical variables is coupled with a model for temperature. The closure proposals are formulated in the Lagrangian setting and resulting stochastic evolution equations are solved with a Monte Carlo method. The near-wall region of a heated channel flow is taken as a validation case; the second-order thermal statistics are of a particular interest. The PDF computation results agree reasonably with available DNS data. The sensitivity of results to the molecular Prandtl number and to the thermal wall boundary condition is accounted for

New Tools to Convert PDF Math Contents into Accessible e-Books Efficiently.

Science.gov (United States)

Suzuki, Masakazu; Terada, Yugo; Kanahori, Toshihiro; Yamaguchi, Katsuhito

2015-01-01

New features in our math-OCR software to convert PDF math contents into accessible e-books are shown. A method for recognizing PDF is thoroughly improved. In addition, contents in any selected area including math formulas in a PDF file can be cut and pasted into a document in various accessible formats, which is automatically recognized and converted into texts and accessible math formulas through this process. Combining it with our authoring tool for a technical document, one can easily produce accessible e-books in various formats such as DAISY, accessible EPUB3, DAISY-like HTML5, Microsoft Word with math objects and so on. Those contents are useful for various print-disabled students ranging from the blind to the dyslexic.

Analysis of a PDF model in a mixing layer case

International Nuclear Information System (INIS)

Minier, J.P.; Pozorski, J.

1996-04-01

A recent turbulence model put forward by Pope (1991) in the context of PDF modeling has been applied to a mixing layer case. This model solves the one-point joint velocity-dissipation pdf equation by simulating the instantaneous behaviour of a large number of Lagrangian fluid particles. Closure of the evolution equations of these Lagrangian particles is based on diffusion stochastic processes. The paper reports numerical results and tries to analyse the physical meaning of some variables, in particular the dissipation-weighted kinetic energy and its relation with external intermittency. (authors). 14 refs., 7 figs

Evaluation of a Consistent LES/PDF Method Using a Series of Experimental Spray Flames

Science.gov (United States)

Heye, Colin; Raman, Venkat

2012-11-01

A consistent method for the evolution of the joint-scalar probability density function (PDF) transport equation is proposed for application to large eddy simulation (LES) of turbulent reacting flows containing evaporating spray droplets. PDF transport equations provide the benefit of including the chemical source term in closed form, however, additional terms describing LES subfilter mixing must be modeled. The recent availability of detailed experimental measurements provide model validation data for a wide range of evaporation rates and combustion regimes, as is well-known to occur in spray flames. In this work, the experimental data will used to investigate the impact of droplet mass loading and evaporation rates on the subfilter scalar PDF shape in comparison with conventional flamelet models. In addition, existing model term closures in the PDF transport equations are evaluated with a focus on their validity in the presence of regime changes.

Technical Training: Annonce de nouveau cours: Utilisation des fichiers PDF avec ACROBAT 6.0

CERN Multimedia

Monique Duval

2005-01-01

CERN Technical Training 2005: Learning for the LHC! Un nouveau cours pratique sur Adobe Acrobat version 6.0 est proposé à l'ensemble du personnel par le service de l'Enseignement Technique, pour répondre aux besoins de formation des utilisateurs des documents PDF. La première session aura lieu le 1er mars 2005. Objectifs : Maîtriser les différentes fonctions d'Adobe Acrobat 6.0. Programme : Présentation d'Adobe Acrobat 6.0. Création de fichiers PDF depuis Microsoft Office et d'autres applications. Création de fichiers Postscript. Modification de fichiers PDF, enregistrement et exportation. Protection par mot de passe et par signature numérique. Navigation dans les documents : interactivité, vignettes et pages, signets, liens, articles, affichage et ouverture des PDF, recherche. Travail en commun: Ajout de commentaires, révision par messagerie électronique Dur&e...

Theoretical issues in PDF determination and associated uncertainties

CERN Document Server

Ball, Richard D.; Del Debbio, Luigi; Forte, Stefano; Guffanti, Alberto; Rojo, Juan; Ubiali, Maria

2013-01-01

We study several sources of theoretical uncertainty in the determination of parton distributions (PDFs) which may affect current PDF sets used for precision physics at the Large Hadron Collider, and explain discrepancies between them. We consider in particular the use of fixed-flavor versus variable-flavor number renormalization schemes, higher twist corrections, and nuclear corrections. We perform our study in the framework of the NNPDF2.3 global PDF determination, by quantifying in each case the impact of different theoretical assumptions on the output PDFs. We also study in each case the implications for benchmark cross sections at the LHC. We find that the impact in a global fit of a fixed-flavor number scheme is substantial, the impact of higher twists is negligible, and the impact of nuclear corrections is moderate and circumscribed.

Transported PDF Modeling of Ethanol Spray in Hot-Diluted Coflow Flame

OpenAIRE

Ma, L.; Naud, B.; Roekaerts, D.J.E.M.

2015-01-01

This paper presents a numerical modeling study of one ethanol spray flame from the Delft Spray-in-Hot-Coflow (DSHC) database, which has been used to study Moderate or Intense Low-oxygen Dilution (MILD) combustion of liquid fuels (Correia Rodrigues et al. Combust. Flame 162(3), 759–773, 2015). A “Lagrangian-Lagrangian” approach is adopted where both the joint velocity-scalar Probability Density Function (PDF) for the continuous phase and the joint PDF of droplet properties are modeled and solv...

The pdf approach to turbulent polydispersed two-phase flows

Science.gov (United States)

Minier, Jean-Pierre; Peirano, Eric

2001-10-01

The purpose of this paper is to develop a probabilistic approach to turbulent polydispersed two-phase flows. The two-phase flows considered are composed of a continuous phase, which is a turbulent fluid, and a dispersed phase, which represents an ensemble of discrete particles (solid particles, droplets or bubbles). Gathering the difficulties of turbulent flows and of particle motion, the challenge is to work out a general modelling approach that meets three requirements: to treat accurately the physically relevant phenomena, to provide enough information to address issues of complex physics (combustion, polydispersed particle flows, …) and to remain tractable for general non-homogeneous flows. The present probabilistic approach models the statistical dynamics of the system and consists in simulating the joint probability density function (pdf) of a number of fluid and discrete particle properties. A new point is that both the fluid and the particles are included in the pdf description. The derivation of the joint pdf model for the fluid and for the discrete particles is worked out in several steps. The mathematical properties of stochastic processes are first recalled. The various hierarchies of pdf descriptions are detailed and the physical principles that are used in the construction of the models are explained. The Lagrangian one-particle probabilistic description is developed first for the fluid alone, then for the discrete particles and finally for the joint fluid and particle turbulent systems. In the case of the probabilistic description for the fluid alone or for the discrete particles alone, numerical computations are presented and discussed to illustrate how the method works in practice and the kind of information that can be extracted from it. Comments on the current modelling state and propositions for future investigations which try to link the present work with other ideas in physics are made at the end of the paper.

The PDF4LHC report on PDFs and LHC data: Results from Run I and preparation for Run II

CERN Document Server

Rojo, Juan; Ball, Richard D; Cooper-Sarkar, Amanda; de Roeck, Albert; Farry, Stephen; Ferrando, James; Forte, Stefano; Gao, Jun; Harland-Lang, Lucian; Huston, Joey; Glazov, Alexander; Gouzevitch, Maxime; Gwenlan, Claire; Lipka, Katerina; Lisovyi, Mykhailo; Mangano, Michelangelo; Nadolsky, Pavel; Perrozzi, Luca; Placakyte, Ringaile; Radescu, Voica; Salam, Gavin P; Thorne, Robert

2015-01-01

The accurate determination of the Parton Distribution Functions (PDFs) of the proton is an essential ingredient of the Large Hadron Collider (LHC) program. PDF uncertainties impact a wide range of processes, from Higgs boson characterisation and precision Standard Model measurements to New Physics searches. A major recent development in modern PDF analyses has been to exploit the wealth of new information contained in precision measurements from the LHC Run I, as well as progress in tools and methods to include these data in PDF fits. In this report we summarise the information that PDF-sensitive measurements at the LHC have provided so far, and review the prospects for further constraining PDFs with data from the recently started Run II. This document aims to provide useful input to the LHC collaborations to prioritise their PDF-sensitive measurements at Run II, as well as a comprehensive reference for the PDF-fitting collaborations.

The PDF4LHC report on PDFs and LHC data. Results from Run I and preparation for Run II

International Nuclear Information System (INIS)

Rojo, Juan; Ball, Richard D.; CERN, Geneva

2015-07-01

The accurate determination of the Parton Distribution Functions (PDFs) of the proton is an essential ingredient of the Large Hadron Collider (LHC) program. PDF uncertainties impact a wide range of processes, from Higgs boson characterisation and precision Standard Model measurements to New Physics searches. A major recent development in modern PDF analyses has been to exploit the wealth of new information contained in precision measurements from the LHC Run I, as well as progress in tools and methods to include these data in PDF fits. In this report we summarise the information that PDF-sensitive measurements at the LHC have provided so far, and review the prospects for further constraining PDFs with data from the recently started Run II. This document aims to provide useful input to the LHC collaborations to prioritise their PDF-sensitive measurements at Run II, as well as a comprehensive reference for the PDF-fitting collaborations.

Analysis of theoretical security level of PDF Encryption mechanism based on X.509 certificates

Directory of Open Access Journals (Sweden)

Joanna Dmitruk

2017-12-01

Full Text Available PDF Encryption is a content security mechanism developed and used by Adobe in their products. In this paper, we have checked a theoretical security level of a variant that uses public key infrastructure and X.509 certificates. We have described a basis of this mechanism and we have performed a simple security analysis. Then, we have showed possible tweaks and security improvements. At the end, we have given some recommendations that can improve security of a content secured with PDF Encryption based on X.509 certificates. Keywords: DRM, cryptography, security level, PDF Encryption, Adobe, X.509

The PDF4LHC report on PDFs and LHC data: results from Run I and preparation for Run II

International Nuclear Information System (INIS)

Rojo, Juan; Accardi, Alberto; Ball, Richard D; Cooper-Sarkar, Amanda; Gwenlan, Claire; Roeck, Albert de; Mangano, Michelangelo; Farry, Stephen; Ferrando, James; Forte, Stefano; Gao, Jun; Harland-Lang, Lucian; Huston, Joey; Glazov, Alexander; Lipka, Katerina; Gouzevitch, Maxime; Lisovyi, Mykhailo; Nadolsky, Pavel

2015-01-01

The accurate determination of the parton distribution functions (PDFs) of the proton is an essential ingredient of the Large Hadron Collider (LHC) program. PDF uncertainties impact a wide range of processes, from Higgs boson characterization and precision Standard Model measurements to new physics searches. A major recent development in modern PDF analyses has been to exploit the wealth of new information contained in precision measurements from the LHC Run I, as well as progress in tools and methods to include these data in PDF fits. In this report we summarize the information that PDF-sensitive measurements at the LHC have provided so far, and review the prospects for further constraining PDFs with data from the recently started Run II. This document aims to provide useful input to the LHC collaborations to prioritize their PDF-sensitive measurements at Run II, as well as a comprehensive reference for the PDF-fitting collaborations. (topical review)

Assessment of PDF Micromixing Models Using DNS Data for a Two-Step Reaction

Science.gov (United States)

Tsai, Kuochen; Chakrabarti, Mitali; Fox, Rodney O.; Hill, James C.

1996-11-01

Although the probability density function (PDF) method is known to treat the chemical reaction terms exactly, its application to turbulent reacting flows have been overshadowed by the ability to model the molecular mixing terms satisfactorily. In this study, two PDF molecular mixing models, the linear-mean-square-estimation (LMSE or IEM) model and the generalized interaction-by-exchange-with-the-mean (GIEM) model, are compared with the DNS data in decaying turbulence with a two-step parallel-consecutive reaction and two segregated initial conditions: ``slabs" and ``blobs". Since the molecular mixing model is expected to have a strong effect on the mean values of chemical species under such initial conditions, the model evaluation is intended to answer the following questions: Can the PDF models predict the mean values of chemical species correctly with completely segregated initial conditions? (2) Is a single molecular mixing timescale sufficient for the PDF models to predict the mean values with different initial conditions? (3) Will the chemical reactions change the molecular mixing timescales of the reacting species enough to affect the accuracy of the model's prediction for the mean values of chemical species?

PDF modeling of turbulent flows on unstructured grids

Science.gov (United States)

Bakosi, Jozsef

In probability density function (PDF) methods of turbulent flows, the joint PDF of several flow variables is computed by numerically integrating a system of stochastic differential equations for Lagrangian particles. Because the technique solves a transport equation for the PDF of the velocity and scalars, a mathematically exact treatment of advection, viscous effects and arbitrarily complex chemical reactions is possible; these processes are treated without closure assumptions. A set of algorithms is proposed to provide an efficient solution of the PDF transport equation modeling the joint PDF of turbulent velocity, frequency and concentration of a passive scalar in geometrically complex configurations. An unstructured Eulerian grid is employed to extract Eulerian statistics, to solve for quantities represented at fixed locations of the domain and to track particles. All three aspects regarding the grid make use of the finite element method. Compared to hybrid methods, the current methodology is stand-alone, therefore it is consistent both numerically and at the level of turbulence closure without the use of consistency conditions. Since both the turbulent velocity and scalar concentration fields are represented in a stochastic way, the method allows for a direct and close interaction between these fields, which is beneficial in computing accurate scalar statistics. Boundary conditions implemented along solid bodies are of the free-slip and no-slip type without the need for ghost elements. Boundary layers at no-slip boundaries are either fully resolved down to the viscous sublayer, explicitly modeling the high anisotropy and inhomogeneity of the low-Reynolds-number wall region without damping or wall-functions or specified via logarithmic wall-functions. As in moment closures and large eddy simulation, these wall-treatments provide the usual trade-off between resolution and computational cost as required by the given application. Particular attention is focused on

A non-hybrid method for the PDF equations of turbulent flows on unstructured grids

International Nuclear Information System (INIS)

Bakosi, J.; Franzese, P.; Boybeyi, Z.

2008-01-01

In probability density function (PDF) methods of turbulent flows, the joint PDF of several flow variables is computed by numerically integrating a system of stochastic differential equations for Lagrangian particles. A set of parallel algorithms is proposed to provide an efficient solution of the PDF transport equation modeling the joint PDF of turbulent velocity, frequency and concentration of a passive scalar in geometrically complex configurations. In the vicinity of walls the flow is resolved by an elliptic relaxation technique down to the viscous sublayer, explicitly modeling the high anisotropy and inhomogeneity of the low-Reynolds-number wall region without damping or wall-functions. An unstructured Eulerian grid is employed to extract Eulerian statistics, to solve for quantities represented at fixed locations of the domain (i.e., the mean pressure and the elliptic relaxation tensor) and to track particles. All three aspects regarding the grid make use of the finite element method employing the simplest linear shapefunctions. To model the small-scale mixing of the transported scalar, the interaction by exchange with the conditional mean (IECM) model is adopted. An adaptive algorithm to compute the velocity-conditioned scalar mean is proposed that homogenizes the statistical error over the sample space with no assumption on the shape of the underlying velocity PDF. Compared to other hybrid particle-in-cell approaches for the PDF equations, the current methodology is consistent without the need for consistency conditions. The algorithm is tested by computing the dispersion of passive scalars released from concentrated sources in two different turbulent flows: the fully developed turbulent channel flow and a street canyon (or cavity) flow. Algorithmic details on estimating conditional and unconditional statistics, particle tracking and particle-number control are presented in detail. Relevant aspects of performance and parallelism on cache-based shared memory

Effect of metal ion on the structure and function of LiPDF: The study of the fine structure around the metal site using XANES

International Nuclear Information System (INIS)

Wang Yu; Chu Wangsheng; Yang Feifei; Yu Meijuan; Zhao Haifeng; Gong Weimin; Dong Yuhui; Xie Yaning; Wu, Ziyu

2010-01-01

We used X-ray absorption near edge structure (XANES) spectroscopy to investigate the metal-dependent enzymatic activity of the peptide deformylase from Leptospira interrogans (LiPDF). Ab initio full multiple scattering calculations performed by MXAN are applied to obtain the local structure of the cobalt-containing LiPDF (Co-LiPDF) and zinc-containing LiPDF (Zn-LiPDF) around the metal sites in pH9.0 buffer solution. The result shows the cobalt-wat1 (the bond water molecule) distance of Co-LiPDF is 1.89 A, much shorter than that of Zn-LiPDF, 2.50 A. That is an essential factor for its low catalytic activity.

Effect of metal ion on the structure and function of LiPDF: The study of the fine structure around the metal site using XANES

Energy Technology Data Exchange (ETDEWEB)

Wang Yu [Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China); National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029 (China); Chu Wangsheng, E-mail: cws@ihep.ac.c [Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China); Yang Feifei; Yu Meijuan; Zhao Haifeng [Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China); Gong Weimin [National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101 (China); Dong Yuhui; Xie Yaning [Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China); Wu, Ziyu, E-mail: wuzy@ustc.edu.c [National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029 (China); Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China)

2010-07-21

We used X-ray absorption near edge structure (XANES) spectroscopy to investigate the metal-dependent enzymatic activity of the peptide deformylase from Leptospira interrogans (LiPDF). Ab initio full multiple scattering calculations performed by MXAN are applied to obtain the local structure of the cobalt-containing LiPDF (Co-LiPDF) and zinc-containing LiPDF (Zn-LiPDF) around the metal sites in pH9.0 buffer solution. The result shows the cobalt-wat1 (the bond water molecule) distance of Co-LiPDF is 1.89 A, much shorter than that of Zn-LiPDF, 2.50 A. That is an essential factor for its low catalytic activity.

Sparse PDF Volumes for Consistent Multi-Resolution Volume Rendering

KAUST Repository

Sicat, Ronell Barrera; Kruger, Jens; Moller, Torsten; Hadwiger, Markus

2014-01-01

This paper presents a new multi-resolution volume representation called sparse pdf volumes, which enables consistent multi-resolution volume rendering based on probability density functions (pdfs) of voxel neighborhoods. These pdfs are defined

PDF Lecture Materials for Online and ``Flipped'' Format Astronomy Courses

Science.gov (United States)

Kary, D. M.; Eisberg, J.

2013-04-01

Online astronomy courses typically rely on students reading the textbook and/or a set of text-based lecture notes to replace the “lecture” material. However, many of our students report that this is much less engaging than in-person lectures, especially given the amount of interactive work such as “think-pair-share” problems done in many astronomy classes. Students have similarly criticized direct lecture-capture. To address this, we have developed a set of PowerPoint-style presentations with embedded lecture audio combined with prompts for student interaction including think-pair-share questions. These are formatted PDF packages that can be used on a range of different computers using free software. The presentations are first developed using Microsoft PowerPoint software. Audio recordings of scripted lectures are then synchronized with the presentations and the entire package is converted to PDF using Adobe Presenter. This approach combines the ease of editing that PowerPoint provides along with the platform-independence of PDF. It's easy to add, remove, or edit individual slides as needed, and PowerPoint supports internal links so that think-pair-share questions can be inserted with links to feedback based on the answers selected. Modern PDF files support animated visuals with synchronized audio and they can be read using widely available free software. Using these files students in an online course can get many of the benefits of seeing and hearing the course material presented in an in-person lecture format. Students needing extra help in traditional lecture classes can use these presentations to help review the materials covered in lecture. Finally, the presentations can be used in a “flipped” format in which students work through the presentations outside of class time while spending the “lecture” time on in-class interaction.

Hybrid finite-volume/transported PDF method for the simulation of turbulent reactive flows

Science.gov (United States)

Raman, Venkatramanan

A novel computational scheme is formulated for simulating turbulent reactive flows in complex geometries with detailed chemical kinetics. A Probability Density Function (PDF) based method that handles the scalar transport equation is coupled with an existing Finite Volume (FV) Reynolds-Averaged Navier-Stokes (RANS) flow solver. The PDF formulation leads to closed chemical source terms and facilitates the use of detailed chemical mechanisms without approximations. The particle-based PDF scheme is modified to handle complex geometries and grid structures. Grid-independent particle evolution schemes that scale linearly with the problem size are implemented in the Monte-Carlo PDF solver. A novel algorithm, in situ adaptive tabulation (ISAT) is employed to ensure tractability of complex chemistry involving a multitude of species. Several non-reacting test cases are performed to ascertain the efficiency and accuracy of the method. Simulation results from a turbulent jet-diffusion flame case are compared against experimental data. The effect of micromixing model, turbulence model and reaction scheme on flame predictions are discussed extensively. Finally, the method is used to analyze the Dow Chlorination Reactor. Detailed kinetics involving 37 species and 158 reactions as well as a reduced form with 16 species and 21 reactions are used. The effect of inlet configuration on reactor behavior and product distribution is analyzed. Plant-scale reactors exhibit quenching phenomena that cannot be reproduced by conventional simulation methods. The FV-PDF method predicts quenching accurately and provides insight into the dynamics of the reactor near extinction. The accuracy of the fractional time-stepping technique in discussed in the context of apparent multiple-steady states observed in a non-premixed feed configuration of the chlorination reactor.

Java facilities in processing XML files - JAXB and generating PDF reports

Directory of Open Access Journals (Sweden)

Danut-Octavian SIMION

2008-01-01

Full Text Available The paper presents the Java programming language facilities in working with XML files using JAXB (The Java Architecture for XML Binding technology and generating PDF reports from XML files using Java objects. The XML file can be an existing one and could contain the data about an entity (Clients for example or it might be the result of a SELECT-SQL statement. JAXB generates JAVA classes through xs rules and a Marshalling, Unmarshalling compiler. The PDF file is build from a XML file and uses XSL-FO formatting file and a Java ResultSet object.

APFEL : A PDF Evolution Library with QED corrections

NARCIS (Netherlands)

Bertone, Valerio; Carrazza, Stefano; Rojo, Juan

Quantum electrodynamics and electroweak corrections are important ingredients for many theoretical predictions at the LHC. This paper documents APFEL, a new PDF evolution package that allows for the first time to perform DGLAP evolution up to NNLO in QCD and to LO in QED, in the

PDF turbulence modeling and DNS

Science.gov (United States)

Hsu, A. T.

1992-01-01

The problem of time discontinuity (or jump condition) in the coalescence/dispersion (C/D) mixing model is addressed in probability density function (pdf). A C/D mixing model continuous in time is introduced. With the continuous mixing model, the process of chemical reaction can be fully coupled with mixing. In the case of homogeneous turbulence decay, the new model predicts a pdf very close to a Gaussian distribution, with finite higher moments also close to that of a Gaussian distribution. Results from the continuous mixing model are compared with both experimental data and numerical results from conventional C/D models. The effect of Coriolis forces on compressible homogeneous turbulence is studied using direct numerical simulation (DNS). The numerical method used in this study is an eight order compact difference scheme. Contrary to the conclusions reached by previous DNS studies on incompressible isotropic turbulence, the present results show that the Coriolis force increases the dissipation rate of turbulent kinetic energy, and that anisotropy develops as the Coriolis force increases. The Taylor-Proudman theory does apply since the derivatives in the direction of the rotation axis vanishes rapidly. A closer analysis reveals that the dissipation rate of the incompressible component of the turbulent kinetic energy indeed decreases with a higher rotation rate, consistent with incompressible flow simulations (Bardina), while the dissipation rate of the compressible part increases; the net gain is positive. Inertial waves are observed in the simulation results.

A Comparative Study of PDF Generation Methods: Measuring Loss of Fidelity When Converting Arabic and Persian MS Word Files to PDF

Science.gov (United States)

2011-02-17

document objects, on one or more electronic document pages. These commands have their roots in typography , so, to understand the PDF Language, one...must have at least a rudimentary understanding of typography . Only a few of the typographic commands, called text showing operators, can hold strings

Extra dimensions: 3d and time in pdf documentation

Energy Technology Data Exchange (ETDEWEB)

Graf, N A [Stanford Linear Accelerator Center, Menlo Park, CA, 94025 (United States)], E-mail: Norman.Graf@slac.stanford.edu

2008-07-15

High energy physics is replete with multi-dimensional information which is often poorly represented by the two dimensions of presentation slides and print media. Past efforts to disseminate such information to a wider audience have failed for a number of reasons, including a lack of standards which are easy to implement and have broad support. Adobe's Portable Document Format (PDF) has in recent years become the de facto standard for secure, dependable electronic information exchange. It has done so by creating an open format, providing support for multiple platforms and being reliable and extensible. By providing support for the ECMA standard Universal 3D (U3D) file format in its free Adobe Reader software, Adobe has made it easy to distribute and interact with 3D content. By providing support for scripting and animation, temporal data can also be easily distributed to a wide audience. In this talk, we present examples of HEP applications which take advantage of this functionality. We demonstrate how 3D detector elements can be documented, using either CAD drawings or other sources such as GEANT visualizations as input. Using this technique, higher dimensional data, such as LEGO plots or time-dependent information can be included in PDF files. In principle, a complete event display, with full interactivity, can be incorporated into a PDF file. This would allow the end user not only to customize the view and representation of the data, but to access the underlying data itself.

Extra dimensions: 3d and time in pdf documentation

International Nuclear Information System (INIS)

Graf, N A

2008-01-01

High energy physics is replete with multi-dimensional information which is often poorly represented by the two dimensions of presentation slides and print media. Past efforts to disseminate such information to a wider audience have failed for a number of reasons, including a lack of standards which are easy to implement and have broad support. Adobe's Portable Document Format (PDF) has in recent years become the de facto standard for secure, dependable electronic information exchange. It has done so by creating an open format, providing support for multiple platforms and being reliable and extensible. By providing support for the ECMA standard Universal 3D (U3D) file format in its free Adobe Reader software, Adobe has made it easy to distribute and interact with 3D content. By providing support for scripting and animation, temporal data can also be easily distributed to a wide audience. In this talk, we present examples of HEP applications which take advantage of this functionality. We demonstrate how 3D detector elements can be documented, using either CAD drawings or other sources such as GEANT visualizations as input. Using this technique, higher dimensional data, such as LEGO plots or time-dependent information can be included in PDF files. In principle, a complete event display, with full interactivity, can be incorporated into a PDF file. This would allow the end user not only to customize the view and representation of the data, but to access the underlying data itself

PDF analysis of PuAl alloys local structure

Energy Technology Data Exchange (ETDEWEB)

Platteau, C. [CEA Valduc, 21120 Is-sur-Tille (France)], E-mail: platteau.cyril@yahoo.fr; Bruckel, P.; Ravat, B.; Delaunay, F. [CEA Valduc, 21120 Is-sur-Tille (France)

2009-03-15

For understanding singular properties of plutonium, there is a need in studying the average and local atomic structure in Pu alloys. To study the local structure of the {delta} phase, a pair distribution function (PDF) analysis was done and has shown some significant differences with the average structure.

Weather Prediction Center (WPC) Home Page

Science.gov (United States)

Products Heat Index Mesoscale Precip Discussion National Forecast Charts National High & Low PQPF QPF Valid Mon May 28, 2018 Valid Tue May 29, 2018 Day 1 Day 2 Day 3 options Image Format: English (PDF) (PDF Mesoscale Precipitation Discussion #0209 is currently in effect headline3 Mesoscale Precipitation Discussion

Reflowing-driven paragraph recognition for electronic books in PDF

Science.gov (United States)

Fang, Jing; Tang, Zhi; Gao, Liangcai

2011-01-01

When reading electronic books on handheld devices, content sometimes should be reflowed and recomposed to adapt for small-screen mobile devices. According to people's reading practice, it is reasonable to reflow the text content based on paragraphs. Hence, this paper addresses the requirement and proposes a set of novel methods on paragraph recognition for electronic books in PDF. The proposed methods consist of three steps, namely, physical structure analysis, paragraph segmentation, and reading order detection. We make use of locally ordered property of PDF documents and layout style of books to improve traditional page recognition results. In addition, we employ the optimal matching of Bipartite Graph technology to detect paragraphs' reading order. Experiments show that our methods achieve high accuracy. It is noteworthy that, the research has been applied in a commercial software package for Chinese E-book production.

Autoreceptor Control of Peptide/Neurotransmitter Corelease from PDF Neurons Determines Allocation of Circadian Activity in Drosophila

Directory of Open Access Journals (Sweden)

Charles Choi

2012-08-01

Full Text Available Drosophila melanogaster flies concentrate behavioral activity around dawn and dusk. This organization of daily activity is controlled by central circadian clock neurons, including the lateral-ventral pacemaker neurons (LNvs that secrete the neuropeptide PDF (pigment dispersing factor. Previous studies have demonstrated the requirement for PDF signaling to PDF receptor (PDFR-expressing dorsal clock neurons in organizing circadian activity. Although LNvs also express functional PDFR, the role of these autoreceptors has remained enigmatic. Here, we show that (1 PDFR activation in LNvs shifts the balance of circadian activity from evening to morning, similar to behavioral responses to summer-like environmental conditions, and (2 this shift is mediated by stimulation of the Gα,s-cAMP pathway and a consequent change in PDF/neurotransmitter corelease from the LNvs. These results suggest another mechanism for environmental control of the allocation of circadian activity and provide new general insight into the role of neuropeptide autoreceptors in behavioral control circuits.

MSL: Facilitating automatic and physical analysis of published scientific literature in PDF format.

Science.gov (United States)

Ahmed, Zeeshan; Dandekar, Thomas

2015-01-01

Published scientific literature contains millions of figures, including information about the results obtained from different scientific experiments e.g. PCR-ELISA data, microarray analysis, gel electrophoresis, mass spectrometry data, DNA/RNA sequencing, diagnostic imaging (CT/MRI and ultrasound scans), and medicinal imaging like electroencephalography (EEG), magnetoencephalography (MEG), echocardiography  (ECG), positron-emission tomography (PET) images. The importance of biomedical figures has been widely recognized in scientific and medicine communities, as they play a vital role in providing major original data, experimental and computational results in concise form. One major challenge for implementing a system for scientific literature analysis is extracting and analyzing text and figures from published PDF files by physical and logical document analysis. Here we present a product line architecture based bioinformatics tool 'Mining Scientific Literature (MSL)', which supports the extraction of text and images by interpreting all kinds of published PDF files using advanced data mining and image processing techniques. It provides modules for the marginalization of extracted text based on different coordinates and keywords, visualization of extracted figures and extraction of embedded text from all kinds of biological and biomedical figures using applied Optimal Character Recognition (OCR). Moreover, for further analysis and usage, it generates the system's output in different formats including text, PDF, XML and images files. Hence, MSL is an easy to install and use analysis tool to interpret published scientific literature in PDF format.

On Variations in the Level of PER in Glial Clocks of Drosophila Optic Lobe and Its Negative Regulation by PDF Signaling.

Science.gov (United States)

Górska-Andrzejak, Jolanta; Chwastek, Elżbieta M; Walkowicz, Lucyna; Witek, Kacper

2018-01-01

We show that the level of the core protein of the circadian clock Period (PER) expressed by glial peripheral oscillators depends on their location in the Drosophila optic lobe. It appears to be controlled by the ventral lateral neurons (LNvs) that release the circadian neurotransmitter Pigment Dispersing Factor (PDF). We demonstrate that glial cells of the distal medulla neuropil (dMnGl) that lie in the vicinity of the PDF-releasing terminals of the LNvs possess receptors for PDF (PDFRs) and express PER at significantly higher level than other types of glia. Surprisingly, the amplitude of PER molecular oscillations in dMnGl is increased twofold in PDF-free environment, that is in Pdf 0 mutants. The Pdf 0 mutants also reveal an increased level of glia-specific protein REPO in dMnGl. The photoreceptors of the compound eye (R-cells) of the PDF-null flies, on the other hand, exhibit de-synchrony of PER molecular oscillations, which manifests itself as increased variability of PER-specific immunofluorescence among the R-cells. Moreover, the daily pattern of expression of the presynaptic protein Bruchpilot (BRP) in the lamina terminals of the R-cells is changed in Pdf 0 mutant. Considering that PDFRs are also expressed by the marginal glia of the lamina that surround the R-cell terminals, the LNv pacemakers appear to be the likely modulators of molecular cycling in the peripheral clocks of both the glial cells and the photoreceptors of the compound eye. Consequently, some form of PDF-based coupling of the glial clocks and the photoreceptors of the eye with the central LNv pacemakers must be operational.

Structural isoforms of the circadian neuropeptide PDF expressed in the optic lobes of the cricket Gryllus bimaculatus: immunocytochemical evidence from specific monoclonal antibodies.

Science.gov (United States)

Honda, Takeshi; Matsushima, Ayami; Sumida, Kazunori; Chuman, Yoshiro; Sakaguchi, Kazuyasu; Onoue, Hitoshi; Meinertzhagen, Ian A; Shimohigashi, Yasuyuki; Shimohigashi, Miki

2006-11-20

Pigment-dispersing factor (PDF) is an 18-mer peptide that acts as a principal neurotransmitter of the insect circadian clock. Our previous study, utilizing anti-Uca beta-PDH polyclonal antibody (pAb) to immunolabel the optic lobe of the cricket Gryllus bimaculatus, suggested the existence of an alternative PDF-like peptide in the outer cells of the first neuropile, or lamina (La), which were much less immunoreactive than the inner cells of the second neuropile, the medulla (Me). To obtain structural information about such a PDF-like peptide, we prepared 10 anti-Gryllus PDF monoclonal (mAb) and pAb antibodies and analyzed their detailed epitope specificities. The PDFMe and PDFLa inner cells and their axonal projections were clearly immunoreactive to all these antibodies, revealing the widespread immunocytochemical organization of the PDF system in the optic lobe, as seen previously with anti-Uca beta-PDH pAb and anti-Gryllus PDF mAb, the epitope structures of which were also clarified in this study. The lamina outer cells, which we found lacked a target pdf mRNA, displayed specific immunoreactivities, indicating that the cells contain a distinct PDF-like peptide possessing both N- and C-terminal structures. These cells were not immunolabeled by some other monoclonal antibodies, however, implying that the PDFLa outer cells have a PDF isoform peptide devoid of Asn at positions 6 and 16. This isoform was also identified in a varicose arborization in the lamina. These results suggest not only the structure of the peptide, but also the possibility of additional functions of this novel PDF isoform.

Comparison of PDF and Moment Closure Methods in the Modeling of Turbulent Reacting Flows

Science.gov (United States)

Norris, Andrew T.; Hsu, Andrew T.

1994-01-01

In modeling turbulent reactive flows, Probability Density Function (PDF) methods have an advantage over the more traditional moment closure schemes in that the PDF formulation treats the chemical reaction source terms exactly, while moment closure methods are required to model the mean reaction rate. The common model used is the laminar chemistry approximation, where the effects of turbulence on the reaction are assumed negligible. For flows with low turbulence levels and fast chemistry, the difference between the two methods can be expected to be small. However for flows with finite rate chemistry and high turbulence levels, significant errors can be expected in the moment closure method. In this paper, the ability of the PDF method and the moment closure scheme to accurately model a turbulent reacting flow is tested. To accomplish this, both schemes were used to model a CO/H2/N2- air piloted diffusion flame near extinction. Identical thermochemistry, turbulence models, initial conditions and boundary conditions are employed to ensure a consistent comparison can be made. The results of the two methods are compared to experimental data as well as to each other. The comparison reveals that the PDF method provides good agreement with the experimental data, while the moment closure scheme incorrectly shows a broad, laminar-like flame structure.

Autoreceptor control of peptide/neurotransmitter corelease from PDF neurons determines allocation of circadian activity in drosophila.

Science.gov (United States)

Choi, Charles; Cao, Guan; Tanenhaus, Anne K; McCarthy, Ellena V; Jung, Misun; Schleyer, William; Shang, Yuhua; Rosbash, Michael; Yin, Jerry C P; Nitabach, Michael N

2012-08-30

Drosophila melanogaster flies concentrate behavioral activity around dawn and dusk. This organization of daily activity is controlled by central circadian clock neurons, including the lateral-ventral pacemaker neurons (LN(v)s) that secrete the neuropeptide PDF (pigment dispersing factor). Previous studies have demonstrated the requirement for PDF signaling to PDF receptor (PDFR)-expressing dorsal clock neurons in organizing circadian activity. Although LN(v)s also express functional PDFR, the role of these autoreceptors has remained enigmatic. Here, we show that (1) PDFR activation in LN(v)s shifts the balance of circadian activity from evening to morning, similar to behavioral responses to summer-like environmental conditions, and (2) this shift is mediated by stimulation of the Gα,s-cAMP pathway and a consequent change in PDF/neurotransmitter corelease from the LN(v)s. These results suggest another mechanism for environmental control of the allocation of circadian activity and provide new general insight into the role of neuropeptide autoreceptors in behavioral control circuits. Copyright © 2012 The Authors. Published by Elsevier Inc. All rights reserved.

Autoreceptor Modulation of Peptide/Neurotransmitter Co-release from PDF Neurons Determines Allocation of Circadian Activity in Drosophila

Science.gov (United States)

Choi, Charles; Cao, Guan; Tanenhaus, Anne K.; McCarthy, Ellena v.; Jung, Misun; Schleyer, William; Shang, Yuhua; Rosbash, Michael; Yin, Jerry C.P.; Nitabach, Michael N.

2012-01-01

Drosophila melanogaster flies concentrate behavioral activity around dawn and dusk. This organization of daily activity is controlled by central circadian clock neurons, including the lateral ventral pacemaker neurons (LNvs) that secrete the neuropeptide PDF (Pigment Dispersing Factor). Previous studies have demonstrated the requirement for PDF signaling to PDF receptor (PDFR)-expressing dorsal clock neurons in organizing circadian activity. While LNvs also express functional PDFR, the role of these autoreceptors has remained enigmatic. Here we show that (1) PDFR activation in LNvs shifts the balance of circadian activity from evening to morning, similar to behavioral responses to summer-like environmental conditions and (2) this shift is mediated by stimulation of the Ga,s-cAMP pathway and a consequent change in PDF/neurotransmitter co-release from the LNvs. These results suggest a novel mechanism for environmental control of the allocation of circadian activity and provide new general insight into the role of neuropeptide autoreceptors in behavioral control circuits. PMID:22938867

price list 2015.pdf | Subscription | Journals | Resources | public ...

Indian Academy of Sciences (India)

Home; public; Resources; Journals; Subscription; price list 2015.pdf. 404! error. The page your are looking for can not be found! Please check the link or use the navigation bar at the top. YouTube; Twitter; Facebook; Blog. Academy News. IAS Logo. 29th Mid-year meeting. Posted on 19 January 2018. The 29th Mid-year ...

Computation of a turbulent channel flow using PDF method

International Nuclear Information System (INIS)

Minier, J.P.; Pozorski, J.

1997-05-01

The purpose of the present paper is to present an analysis of a PDF model (Probability Density Function) and an illustration of the possibilities offered by such a method for a high-Reynolds turbulent channel flow. The first part presents the principles of the PDF approach and the introduction of stochastic processes along with a Lagrangian point of view. The model retained is the one put forward by Pope (1991) and includes evolution equations for location, velocity and dissipation of a large number of particles. Wall boundary conditions are then developed for particles. These conditions allow statistical results of the logarithmic region to be correctly reproduced. Simulation of non-homogeneous flows require a pressure-gradient algorithm which is briefly described. Developments are validated by analysing numerical predictions with respect to Comte Bellot experimental data (1965) on a channel flow. This example illustrates the ability of the approach to simulate wall-bounded flows and to provide detailed information such as skewness and flatness factors. (author)

The PDF method for Lagrangian two-phase flow simulations

International Nuclear Information System (INIS)

Minier, J.P.; Pozorski, J.

1996-04-01

A recent turbulence model put forward by Pope (1991) in the context of PDF modelling has been used. In this approach, the one-point joint velocity-dissipation pdf equation is solved by simulating the instantaneous behaviour of a large number of Lagrangian fluid particles. Closure of the evolution equations of these Lagrangian particles is based on stochastic models and more specifically on diffusion processes. Such models are of direct use for two-phase flow modelling where the so-called fluid seen by discrete inclusions has to be modelled. Full Lagrangian simulations have been performed for shear-flows. It is emphasized that this approach gives far more information than traditional turbulence closures (such as the K-ε model) and therefore can be very useful for situations involving complex physics. It is also believed that the present model represents the first step towards a complete Lagrangian-Lagrangian model for dispersed two-phase flow problems. (authors). 21 refs., 6 figs

PDF added value of a high resolution climate simulation for precipitation

Science.gov (United States)

Soares, Pedro M. M.; Cardoso, Rita M.

2015-04-01

General Circulation Models (GCMs) are models suitable to study the global atmospheric system, its evolution and response to changes in external forcing, namely to increasing emissions of CO2. However, the resolution of GCMs, of the order of 1o, is not sufficient to reproduce finer scale features of the atmospheric flow related to complex topography, coastal processes and boundary layer processes, and higher resolution models are needed to describe observed weather and climate. The latter are known as Regional Climate Models (RCMs) and are widely used to downscale GCMs results for many regions of the globe and are able to capture physically consistent regional and local circulations. Most of the RCMs evaluations rely on the comparison of its results with observations, either from weather stations networks or regular gridded datasets, revealing the ability of RCMs to describe local climatic properties, and assuming most of the times its higher performance in comparison with the forcing GCMs. The additional climatic details given by RCMs when compared with the results of the driving models is usually named as added value, and it's evaluation is still scarce and controversial in the literuature. Recently, some studies have proposed different methodologies to different applications and processes to characterize the added value of specific RCMs. A number of examples reveal that some RCMs do add value to GCMs in some properties or regions, and also the opposite, elighnening that RCMs may add value to GCM resuls, but improvements depend basically on the type of application, model setup, atmospheric property and location. The precipitation can be characterized by histograms of daily precipitation, or also known as probability density functions (PDFs). There are different strategies to evaluate the quality of both GCMs and RCMs in describing the precipitation PDFs when compared to observations. Here, we present a new method to measure the PDF added value obtained from

External intermittency prediction using AMR solutions of RANS turbulence and transported PDF models

Science.gov (United States)

Olivieri, D. A.; Fairweather, M.; Falle, S. A. E. G.

2011-12-01

External intermittency in turbulent round jets is predicted using a Reynolds-averaged Navier-Stokes modelling approach coupled to solutions of the transported probability density function (pdf) equation for scalar variables. Solutions to the descriptive equations are obtained using a finite-volume method, combined with an adaptive mesh refinement algorithm, applied in both physical and compositional space. This method contrasts with conventional approaches to solving the transported pdf equation which generally employ Monte Carlo techniques. Intermittency-modified eddy viscosity and second-moment turbulence closures are used to accommodate the effects of intermittency on the flow field, with the influence of intermittency also included, through modifications to the mixing model, in the transported pdf equation. Predictions of the overall model are compared with experimental data on the velocity and scalar fields in a round jet, as well as against measurements of intermittency profiles and scalar pdfs in a number of flows, with good agreement obtained. For the cases considered, predictions based on the second-moment turbulence closure are clearly superior, although both turbulence models give realistic predictions of the bimodal scalar pdfs observed experimentally.

The Effect of a Simplified English Language Dictionary on a Reading Test. LEP Projects Report 1.

Science.gov (United States)

Albus, Deb; Bielinski, John; Thurlow, Martha; Liu, Kristin

This study was conducted to examine whether using a monolingual, simplified English dictionary as an accommodation on a reading test with limited-English-proficient (LEP) Hmong students improved test performance. Hmong students were chosen because they are often not literate in their first language. For these students, bilingual dictionaries are…

Fertility, Menstrual Characteristics, and Contraceptive Practices among White, Black, and Southeast Asian Refugee Adolescents.

Science.gov (United States)

Swenson, Ingrid; And Others

1989-01-01

Compared fertility and menstrual characteristics and contraceptive practices of adolescents in maternal and infant care program. Hmong subjects were more likely to have live birth; Asians were usually married while Whites and Blacks were not. Asians were less likely to have used contraceptives and Hmongs were less likely to choose contraception…

ChemEngine: harvesting 3D chemical structures of supplementary data from PDF files.

Science.gov (United States)

Karthikeyan, Muthukumarasamy; Vyas, Renu

2016-01-01

Digital access to chemical journals resulted in a vast array of molecular information that is now available in the supplementary material files in PDF format. However, extracting this molecular information, generally from a PDF document format is a daunting task. Here we present an approach to harvest 3D molecular data from the supporting information of scientific research articles that are normally available from publisher's resources. In order to demonstrate the feasibility of extracting truly computable molecules from PDF file formats in a fast and efficient manner, we have developed a Java based application, namely ChemEngine. This program recognizes textual patterns from the supplementary data and generates standard molecular structure data (bond matrix, atomic coordinates) that can be subjected to a multitude of computational processes automatically. The methodology has been demonstrated via several case studies on different formats of coordinates data stored in supplementary information files, wherein ChemEngine selectively harvested the atomic coordinates and interpreted them as molecules with high accuracy. The reusability of extracted molecular coordinate data was demonstrated by computing Single Point Energies that were in close agreement with the original computed data provided with the articles. It is envisaged that the methodology will enable large scale conversion of molecular information from supplementary files available in the PDF format into a collection of ready- to- compute molecular data to create an automated workflow for advanced computational processes. Software along with source codes and instructions available at https://sourceforge.net/projects/chemengine/files/?source=navbar.Graphical abstract.

Reading Test Performance of English-Language Learners Using an English Dictionary.

Science.gov (United States)

Albus, Debra; Thurlow, Martha; Liu, Kristin; Bielinski, John

2005-01-01

The authors examined the effects of a simplified English dictionary accommodation on the reading-test performance of Hmong English-language learners (ELLs). Participants included a control group of 69 non-ELL students and an experimental group of 133 Hmong ELLs from 3 urban middle schools in Minnesota. In a randomized counterbalanced design, all…

Lost in Transition

Science.gov (United States)

Lum, Lydia

2010-01-01

When Dr. Chia Youyee Vang arrived at the University of Wisconsin-Milwaukee five years ago, numerous Hmong students along with community residents called for more courses specifically examining their life experiences. Now, her university offers a certificate in Hmong diaspora studies. It's part of a growing tide within Asian American studies--more…

aMCfast: automation of fast NLO computations for PDF fits

CERN Document Server

Bertone, Valerio; Frixione, Stefano; Rojo, Juan; Sutton, Mark

2014-01-01

We present the interface between MadGraph5_aMC@NLO, a self-contained program that calculates cross sections up to next-to-leading order accuracy in an automated manner, and APPLgrid, a code that parametrises such cross sections in the form of look-up tables which can be used for the fast computations needed in the context of PDF fits. The main characteristic of this interface, which we dub aMCfast, is its being fully automated as well, which removes the need to extract manually the process-specific information for additional physics processes, as is the case with other matrix element calculators, and renders it straightforward to include any new process in the PDF fits. We demonstrate this by studying several cases which are easily measured at the LHC, have a good constraining power on PDFs, and some of which were previously unavailable in the form of a fast interface.

Dynamic Link Inclusion in Online PDF Journals

OpenAIRE

Probets, Steve; Brailsford, David; Carr, Les; Hall, Wendy

1998-01-01

Two complementary de facto standards for the publication of electronic documents are HTML on theWorldWideWeb and Adobe s PDF (Portable Document Format) language for use with Acrobat viewers. Both these formats provide support for hypertext features to be embedded within documents. We present a method, which allows links and other hypertext material to be kept in an abstract form in separate link databases. The links can then be interpreted or compiled at any stage and applied, in the correct ...

Self-consistent EXAFS PDF Projection Method by Matched Correction of Fourier Filter Signal Distortion

International Nuclear Information System (INIS)

Lee, Jay Min; Yang, Dong-Seok

2007-01-01

Inverse problem solving computation was performed for solving PDF (pair distribution function) from simulated data EXAFS based on data FEFF. For a realistic comparison with experimental data, we chose a model of the first sub-shell Mn-0 pair showing the Jahn Teller distortion in crystalline LaMnO3. To restore the Fourier filtering signal distortion, involved in the first sub-shell information isolated from higher shell contents, relevant distortion matching function was computed initially from the proximity model, and iteratively from the prior-guess during consecutive regularization computation. Adaptive computation of EXAFS background correction is an issue of algorithm development, but our preliminary test was performed under the simulated background correction perfectly excluding the higher shell interference. In our numerical result, efficient convergence of iterative solution indicates a self-consistent tendency that a true PDF solution is convinced as a counterpart of genuine chi-data, provided that a background correction function is iteratively solved using an extended algorithm of MEPP (Matched EXAFS PDF Projection) under development

BOMS-D-15-00965.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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BOMS-D-16-00790.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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BOMS-D-16-00748.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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BOMS-D-15-01110.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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BOMS-D-16-00613.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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BOMS-D-16-00443.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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BOMS-D-16-00368.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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BOMS-D-16-01004.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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BOMS-D-17-00377.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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BOMS-D-16-00728.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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BOMS-D-17-00315.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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BOMS-D-16-00015.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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BOMS-D-15-00018.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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BOMS-D-16-00023.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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BOMS-D-17-00085.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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BOMS-D-16-00562.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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1609.pdf | dec102000 | currsci | Indian Academy of Sciences

Indian Academy of Sciences (India)

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BOMS-D-16-00881.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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727.pdf | mar102006 | currsci | Indian Academy of Sciences

Indian Academy of Sciences (India)

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BOMS-D-16-00399.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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BOMS-D-17-00399.pdf | forthcoming | boms | Volumes | public ...

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BOMS-D-15-00514.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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BOMS-D-16-00992.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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BOMS-D-17-00606.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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BOMS-D-17-00607.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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BOMS-D-16-00720.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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BOMS-D-16-00509.pdf | forthcoming | boms | Volumes | public ...

Indian Academy of Sciences (India)

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A consistent transported PDF model for treating differential molecular diffusion

Science.gov (United States)

Wang, Haifeng; Zhang, Pei

2016-11-01

Differential molecular diffusion is a fundamentally significant phenomenon in all multi-component turbulent reacting or non-reacting flows caused by the different rates of molecular diffusion of energy and species concentrations. In the transported probability density function (PDF) method, the differential molecular diffusion can be treated by using a mean drift model developed by McDermott and Pope. This model correctly accounts for the differential molecular diffusion in the scalar mean transport and yields a correct DNS limit of the scalar variance production. The model, however, misses the molecular diffusion term in the scalar variance transport equation, which yields an inconsistent prediction of the scalar variance in the transported PDF method. In this work, a new model is introduced to remedy this problem that can yield a consistent scalar variance prediction. The model formulation along with its numerical implementation is discussed, and the model validation is conducted in a turbulent mixing layer problem.

Maximum entropy PDF projection: A review

Science.gov (United States)

Baggenstoss, Paul M.

2017-06-01

We review maximum entropy (MaxEnt) PDF projection, a method with wide potential applications in statistical inference. The method constructs a sampling distribution for a high-dimensional vector x based on knowing the sampling distribution p(z) of a lower-dimensional feature z = T (x). Under mild conditions, the distribution p(x) having highest possible entropy among all distributions consistent with p(z) may be readily found. Furthermore, the MaxEnt p(x) may be sampled, making the approach useful in Monte Carlo methods. We review the theorem and present a case study in model order selection and classification for handwritten character recognition.

A Electronic Map Data Model Based on PDF

Science.gov (United States)

Zhou, Xiaodong; Yang, Chuncheng; Meng, Nina; Peng, Peng

2018-05-01

In this paper, we proposed the PDFEMAP (PDF electronic map) that is a kind of new electronic map products aiming at the current situation and demand of the use of electronic map products. Firstly gives the definition and characteristics of PDFEMAP, followed by a detailed description of the data model and method for generating PDFEMAP, and finally expounds application modes of the PDFEMAP which feasibility and effectiveness are verified.

Presumed PDF modeling of microjet assisted CH4–H2/air turbulent flames

International Nuclear Information System (INIS)

Chouaieb, Sirine; Kriaa, Wassim; Mhiri, Hatem; Bournot, Philippe

2016-01-01

Highlights: • Microjet assisted CH 4 –H 2 /air turbulent flames are numerically investigated. • Temperature, species and soot are well predicted by the Presumed PDF model. • An inner flame is identified due to the microjet presence. • The addition of hydrogen to the microjet assisted flames enhances mixing. • Soot emission is reduced by 36% for a 10% enriched microjet assisted flame. - Abstract: The characteristics of microjet assisted CH 4 –H 2 /air flames in a turbulent mode are numerically investigated. Simulations are performed using the Computational Fluid Dynamics code Fluent. The Presumed PDF and the Discrete Ordinates models are considered respectively for combustion and radiation modeling. The k–ε Realizable model is adopted as a turbulence closure model. The Tesner model is used to calculate soot particle quantities. In the first part of this paper, the Presumed PDF model is compared to the Eddy Dissipation model and to slow chemistry combustion models from literature. Results show that the Presumed PDF model predicts correctly thermal and species fields, as well as soot formation. The effect of hydrogen enrichment on CH 4 /air confined flames under the addition of an air microjet is investigated in the second part of this work. The found results show that an inner flame was identified due to the air microjet for the CH 4 –H 2 /air flames. Moreover, the increase of hydrogen percentage in the fuel mixture leads to mixing enhancement and consequently to considerable soot emission reduction.

An LES-PBE-PDF approach for modeling particle formation in turbulent reacting flows

Science.gov (United States)

Sewerin, Fabian; Rigopoulos, Stelios

2017-10-01

Many chemical and environmental processes involve the formation of a polydispersed particulate phase in a turbulent carrier flow. Frequently, the immersed particles are characterized by an intrinsic property such as the particle size, and the distribution of this property across a sample population is taken as an indicator for the quality of the particulate product or its environmental impact. In the present article, we propose a comprehensive model and an efficient numerical solution scheme for predicting the evolution of the property distribution associated with a polydispersed particulate phase forming in a turbulent reacting flow. Here, the particulate phase is described in terms of the particle number density whose evolution in both physical and particle property space is governed by the population balance equation (PBE). Based on the concept of large eddy simulation (LES), we augment the existing LES-transported probability density function (PDF) approach for fluid phase scalars by the particle number density and obtain a modeled evolution equation for the filtered PDF associated with the instantaneous fluid composition and particle property distribution. This LES-PBE-PDF approach allows us to predict the LES-filtered fluid composition and particle property distribution at each spatial location and point in time without any restriction on the chemical or particle formation kinetics. In view of a numerical solution, we apply the method of Eulerian stochastic fields, invoking an explicit adaptive grid technique in order to discretize the stochastic field equation for the number density in particle property space. In this way, sharp moving features of the particle property distribution can be accurately resolved at a significantly reduced computational cost. As a test case, we consider the condensation of an aerosol in a developed turbulent mixing layer. Our investigation not only demonstrates the predictive capabilities of the LES-PBE-PDF model but also

1089.pdf | jul2014 | jess | Indian Academy of Sciences

Indian Academy of Sciences (India)

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630.pdf | sep102009 | currsci | Indian Academy of Sciences

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37.pdf | jan102006 | currsci | Indian Academy of Sciences

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867.pdf | aug2012 | jess | Indian Academy of Sciences

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1417.pdf | nov252004 | currsci | Indian Academy of Sciences

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897.pdf | apr102004 | currsci | Indian Academy of Sciences

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Kafkaesque rebranding of pro-US fighters as terrorists

Directory of Open Access Journals (Sweden)

Benjamin Zawacki

2007-07-01

Full Text Available During the Indochina war the US recruited fighters from the Hmong people of Laos to disrupt North Vietnamese supply and troops movements along the Ho Chi Minh trail. While an estimated 170,000 ex-combatant Hmong and their relatives now live in the US , others seeking asylum have bizarrely fallen foul of the post-9.11 PATRIOTPATRIOTPATRIOT PATRIOT Act.

A novel background field removal method for MRI using projection onto dipole fields (PDF).

Science.gov (United States)

Liu, Tian; Khalidov, Ildar; de Rochefort, Ludovic; Spincemaille, Pascal; Liu, Jing; Tsiouris, A John; Wang, Yi

2011-11-01

For optimal image quality in susceptibility-weighted imaging and accurate quantification of susceptibility, it is necessary to isolate the local field generated by local magnetic sources (such as iron) from the background field that arises from imperfect shimming and variations in magnetic susceptibility of surrounding tissues (including air). Previous background removal techniques have limited effectiveness depending on the accuracy of model assumptions or information input. In this article, we report an observation that the magnetic field for a dipole outside a given region of interest (ROI) is approximately orthogonal to the magnetic field of a dipole inside the ROI. Accordingly, we propose a nonparametric background field removal technique based on projection onto dipole fields (PDF). In this PDF technique, the background field inside an ROI is decomposed into a field originating from dipoles outside the ROI using the projection theorem in Hilbert space. This novel PDF background removal technique was validated on a numerical simulation and a phantom experiment and was applied in human brain imaging, demonstrating substantial improvement in background field removal compared with the commonly used high-pass filtering method. Copyright © 2011 John Wiley & Sons, Ltd.

The photon PDF from high-mass Drell Yan data at the LHC

CERN Document Server

Giuli, Francesco

2017-05-25

In this contribution, we review the results of [1], where a determination of the photon PDF from fits to recent ATLAS measurements of high-mass Drell-Yan dilepton production at $\\sqrt{s}$ = 8 TeV is presented.

Charm and beauty quark masses in the MMHT2014 global PDF analysis.

Science.gov (United States)

Harland-Lang, L A; Martin, A D; Motylinski, P; Thorne, R S

We investigate the variation in the MMHT2014 PDFs when we allow the heavy-quark masses [Formula: see text] and [Formula: see text] to vary away from their default values. We make PDF sets available in steps of [Formula: see text] and [Formula: see text], and present the variation in the PDFs and in the predictions. We examine the comparison to the HERA data on charm and beauty structure functions and note that in each case the heavy-quark data, and the inclusive data, have a slight preference for lower masses than our default values. We provide PDF sets with three and four active quark flavours, as well as the standard value of five flavours. We use the pole mass definition of the quark masses, as in the default MMHT2014 analysis, but briefly comment on the [Formula: see text] definition.

JESS-D-16-00449.pdf | forthcoming | jess | Volumes | public | Indian ...

Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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424.pdf | 10feb2011 | currsci | Indian Academy of Sciences

Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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0090.pdf | 12 | 087 | pram | Volumes | public | Indian Academy of ...

Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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154.pdf | 25jan2011 | currsci | Indian Academy of Sciences

Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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JESS-D-17-00106.pdf | forthcoming | jess | Volumes | public | Indian ...

Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Crystallization and preliminary X-ray crystallographic analysis of peptide deformylase (PDF) from Bacillus cereus in ligand-free and actinonin-bound forms

International Nuclear Information System (INIS)

Park, Joon Kyu; Moon, Jin Ho; Kim, Jae-Hong; Kim, Eunice EunKyeong

2004-01-01

Peptide deformylase (PDF) from B. cereus has been overexpressed, purified and crystallized in ligand-free and actinonin-bound forms. Diffraction data have been collected from these crystals to 1.7 and 2.0 Å resolution, respectively. In bacteria, protein expression initiates with an N-formyl group and this needs to be removed in order to ensure proper bacterial growth. These formylation and deformylation processes are unique to eubacteria; therefore, inhibition of these would provide a novel antibacterial therapy. Deformylation is carried out by peptide deformylase (PDF). PDF from Bacillus cereus, one of the major pathogenic bacteria, was cloned into expression plasmid pET-28a (Novagen), overexpressed in Escherichia coli BL21 (DE3) and purified to high quality. Crystals have been obtained of both ligand-free PDF and PDF to which actinonin, a highly potent naturally occurring inhibitor, is bound. Both crystals belong to space group P2 1 2 1 2 1 , with unit-cell parameters a = 42.72, b = 44.04, c = 85.19 Å and a = 41.31, b = 44.56, c = 84.47 Å, respectively. Diffraction data were collected to 1.7 Å resolution for the inhibitor-free crystals and to 2.0 Å resolution for the actinonin-bound crystals

Transported PDF Modeling of Nonpremixed Turbulent CO/H-2/N-2 Jet Flames

Energy Technology Data Exchange (ETDEWEB)

Zhao, xinyu; Haworth, D. C.; Huckaby, E. David

2012-01-01

Turbulent CO/H{sub 2}/N{sub 2} (“syngas”) flames are simulated using a transported composition probability density function (PDF) method. A consistent hybrid Lagrangian particle/Eulerian mesh algorithm is used to solve the modeled PDF transport equation. The model includes standard k–ϵ turbulence, gradient transport for scalars, and Euclidean minimum spanning tree (EMST) mixing. Sensitivities of model results to variations in the turbulence model, the treatment of radiation heat transfer, the choice of chemical mechanism, and the PDF mixing model are explored. A baseline model reproduces the measured mean and rms temperature, major species, and minor species profiles reasonably well, and captures the scaling that is observed in the experiments. Both our results and the literature suggest that further improvements can be realized with adjustments in the turbulence model, the radiation heat transfer model, and the chemical mechanism. Although radiation effects are relatively small in these flames, consideration of radiation is important for accurate NO prediction. Chemical mechanisms that have been developed specifically for fuels with high concentrations of CO and H{sub 2} perform better than a methane mechanism that was not designed for this purpose. It is important to account explicitly for turbulence–chemistry interactions, although the details of the mixing model do not make a large difference in the results, within reasonable limits.

Measurement of Triple-Differential Dijet Cross Sections with the CMS Detector at 8 TeV and PDF Constraints

CERN Document Server

Sieber, Georg; Müller, Thomas

The first measurement of triple-differential dijet cross sections at the LHC is presented using 19. 71 fb−1 of data collected with the CMS detector in proton-proton collisions at 8TeV. The cross sections are measured as a function of the average transverse momentum, the rapidity separation, and the boost of the two leading jets. The unfolded cross sections agree with perturbative QCD calculations at NLO accuracy apart from phase space regions containing strongly boosted dijets events, in which the measurement is sensitive to the PDFs. Constraints on the PDFs are derived by including the data in a PDF fit together with DIS cross sections from the HERA experiments. Compared to a fit with HERA DIS data alone, the uncertainties of the PDFs, especially those of the gluon PDF, are significantly reduced and a harder gluon PDF is obtained.

Metadata extraction from scientific documents in PDF

OpenAIRE

Alan Pinto Souza

2014-01-01

A maioria dos artigos científicos estão disponíveis no formato PDF. Este padrão permite a geracão de metadados que são inclusos dentro do documento. Porém, muitos autores não definem esta informação, fazendo esse recurso inseguro ou incompleto. Este fato tem motivado pesquisa que busca extrair metadados automaticamente. A extração automática de metadados foi classificada como uma das tarefas mais desafiadoras na área de engenharia de documentos. Este trabalho propõe Artic, um método para extr...

The Arabidopsis mutant iop1 exhibits induced over-expression of the plant defensin gene PDF1.2 and enhanced pathogen resistance

NARCIS (Netherlands)

Penninckx, I.A.M.A.; Eggermont, K.; Schenk, P.M.; Ackerveken, van den G.; Cammue, B.P.A.; Thomma, B.P.H.J.

2003-01-01

Jasmonate and ethylene are concomitantly involved in the induction of the Arabidopsis plant defensin gene PDF1.2. To define genes in the signal transduction pathway leading to the induction of PDF1.2, we screened for mutants with induced over-expression of a β-glucuronidase reporter, under the

Four-year-BS-position-paper.pdf | misc docs | academy | Indian ...

Indian Academy of Sciences (India)

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ilc-25.pdf | dec2005 | jess | Indian Academy of Sciences

Indian Academy of Sciences (India)

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577.pdf | 10sep2010 | currsci | Indian Academy of Sciences

Indian Academy of Sciences (India)

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Charm and beauty quark masses in the MMHT2014 global PDF analysis

Energy Technology Data Exchange (ETDEWEB)

Harland-Lang, L.A.; Motylinski, P.; Thorne, R.S. [University College London, Department of Physics and Astronomy, London (United Kingdom); Martin, A.D. [Durham University, Institute for Particle Physics Phenomenology, Durham (United Kingdom)

2016-01-15

We investigate the variation in the MMHT2014 PDFs when we allow the heavy-quark masses m{sub c} and m{sub b} to vary away from their default values.Wemake PDF sets available in steps of Δm{sub c} = 0.05 GeV and Δm{sub b} = 0.25 GeV, and present the variation in the PDFs and in the predictions. We examine the comparison to the HERA data on charm and beauty structure functions and note that in each case the heavy-quark data, and the inclusive data, have a slight preference for lower masses than our default values.We provide PDF sets with three and four active quark flavours, as well as the standard value of five flavours. We use the pole mass definition of the quark masses, as in the default MMHT2014 analysis, but briefly comment on the MS definition. (orig.)

Charm and beauty quark masses in the MMHT2014 global PDF analysis

Energy Technology Data Exchange (ETDEWEB)

Harland-Lang, L. A. [Department of Physics and Astronomy, University College London, WC1E 6BT, London (United Kingdom); Martin, A. D. [Institute for Particle Physics Phenomenology, Durham University, DH1 3LE, Durham (United Kingdom); Motylinski, P.; Thorne, R. S., E-mail: thorne@hep.ucl.ac.uk [Department of Physics and Astronomy, University College London, WC1E 6BT, London (United Kingdom)

2016-01-06

We investigate the variation in the MMHT2014 PDFs when we allow the heavy-quark masses m{sub c} and m{sub b} to vary away from their default values. We make PDF sets available in steps of Δm{sub c}=0.05 GeV and Δm{sub b}=0.25 GeV, and present the variation in the PDFs and in the predictions. We examine the comparison to the HERA data on charm and beauty structure functions and note that in each case the heavy-quark data, and the inclusive data, have a slight preference for lower masses than our default values. We provide PDF sets with three and four active quark flavours, as well as the standard value of five flavours. We use the pole mass definition of the quark masses, as in the default MMHT2014 analysis, but briefly comment on the (MS)-bar definition.

Status of the TESS Science Processing Operations Center

Science.gov (United States)

Jenkins, Jon M.; Twicken, Joseph D.; Campbell, Jennifer; Tenebaum, Peter; Sanderfer, Dwight; Davies, Misty D.; Smith, Jeffrey C.; Morris, Rob; Mansouri-Samani, Masoud; Girouardi, Forrest;

Modeling of the Maximum Entropy Problem as an Optimal Control Problem and its Application to Pdf Estimation of Electricity Price

Directory of Open Access Journals (Sweden)

M. E. Haji Abadi

2013-09-01

Full Text Available In this paper, the continuous optimal control theory is used to model and solve the maximum entropy problem for a continuous random variable. The maximum entropy principle provides a method to obtain least-biased probability density function (Pdf estimation. In this paper, to find a closed form solution for the maximum entropy problem with any number of moment constraints, the entropy is considered as a functional measure and the moment constraints are considered as the state equations. Therefore, the Pdf estimation problem can be reformulated as the optimal control problem. Finally, the proposed method is applied to estimate the Pdf of the hourly electricity prices of New England and Ontario electricity markets. Obtained results show the efficiency of the proposed method.

Crystallization and preliminary X-ray crystallographic analysis of peptide deformylase (PDF) from Bacillus cereus in ligand-free and actinonin-bound forms.

Science.gov (United States)

Park, Joon Kyu; Moon, Jin Ho; Kim, Jae-Hong; Kim, Eunice EunKyeong

2005-01-01

In bacteria, protein expression initiates with an N-formyl group and this needs to be removed in order to ensure proper bacterial growth. These formylation and deformylation processes are unique to eubacteria; therefore, inhibition of these would provide a novel antibacterial therapy. Deformylation is carried out by peptide deformylase (PDF). PDF from Bacillus cereus, one of the major pathogenic bacteria, was cloned into expression plasmid pET-28a (Novagen), overexpressed in Escherichia coli BL21 (DE3) and purified to high quality. Crystals have been obtained of both ligand-free PDF and PDF to which actinonin, a highly potent naturally occurring inhibitor, is bound. Both crystals belong to space group P2(1)2(1)2(1), with unit-cell parameters a = 42.72, b = 44.04, c = 85.19 A and a = 41.31, b = 44.56, c = 84.47 A, respectively. Diffraction data were collected to 1.7 A resolution for the inhibitor-free crystals and to 2.0 A resolution for the actinonin-bound crystals.

Asymptotic stability of spectral-based PDF modeling for homogeneous turbulent flows

Science.gov (United States)

Campos, Alejandro; Duraisamy, Karthik; Iaccarino, Gianluca

2015-11-01

Engineering models of turbulence, based on one-point statistics, neglect spectral information inherent in a turbulence field. It is well known, however, that the evolution of turbulence is dictated by a complex interplay between the spectral modes of velocity. For example, for homogeneous turbulence, the pressure-rate-of-strain depends on the integrated energy spectrum weighted by components of the wave vectors. The Interacting Particle Representation Model (IPRM) (Kassinos & Reynolds, 1996) and the Velocity/Wave-Vector PDF model (Van Slooten & Pope, 1997) emulate spectral information in an attempt to improve the modeling of turbulence. We investigate the evolution and asymptotic stability of the IPRM using three different approaches. The first approach considers the Lagrangian evolution of individual realizations (idealized as particles) of the stochastic process defined by the IPRM. The second solves Lagrangian evolution equations for clusters of realizations conditional on a given wave vector. The third evolves the solution of the Eulerian conditional PDF corresponding to the aforementioned clusters. This last method avoids issues related to discrete particle noise and slow convergence associated with Lagrangian particle-based simulations.

Multi-variate joint PDF for non-Gaussianities: exact formulation and generic approximations

CERN Document Server

Verde, Licia; Heavens, Alan F; Jimenez, Raul; Matarrese, Sabino

2013-01-01

We provide an exact expression for the multi-variate joint probability distribution function of non-Gaussian fields primordially arising from local transformations of a Gaussian field. This kind of non-Gaussianity is generated in many models of inflation. We apply our expression to the non- Gaussianity estimation from Cosmic Microwave Background maps and the halo mass function where we obtain analytical expressions. We also provide analytic approximations and their range of validity. For the Cosmic Microwave Background we give a fast way to compute the PDF which is valid up to 7{\\sigma} for fNL values (both true and sampled) not ruled out by current observations, which consists of expressing the PDF as a combination of bispectrum and trispectrum of the temperature maps. The resulting expression is valid for any kind of non-Gaussianity and is not limited to the local type. The above results may serve as the basis for a fully Bayesian analysis of the non-Gaussianity parameter.

How bright is the proton? A precise determination of the photon PDF

CERN Document Server

Manohar, Aneesh; Salam, Gavin P; Zanderighi, Giulia

2016-01-01

It has become apparent in recent years that it is important, notably for a range of physics studies at the Large Hadron Collider, to have accurate knowledge on the distribution of photons in the proton. We show how the photon parton distribution function (PDF) can be determined in a model-independent manner, using electron-proton ($ep$) scattering data, in effect viewing the $ep\\to e+X$ process as an electron scattering off the photon field of the proton. To this end, we consider an imaginary BSM process with a flavour changing photon-lepton vertex. We write its cross section in two ways, one in terms of proton structure functions, the other in terms of a photon distribution. Requiring their equivalence yields the photon distribution as an integral over proton structure functions. As a result of the good precision of $ep$ data, we constrain the photon PDF at the level of 1-2% over a wide range of $x$ values.

The photon PDF from high-mass Drell-Yan data at the LHC

Energy Technology Data Exchange (ETDEWEB)

Giuli, F.; Cooper-Sarkar, A. [University of Oxford, Oxford, OX1 3NP (United Kingdom); Bertone, V.; Rojo, J. [VU University, Department of Physics and Astronomy, Amsterdam (Netherlands); Nikhef Theory Group Science Park 105, Amsterdam (Netherlands); Britzger, D.; Glazov, A.; Zenaiev, O. [DESY Hamburg, Hamburg (Germany); Carrazza, S. [CERN, Geneva 23 (Switzerland); Lohwasser, K. [DESY Zeuthen, Zeuthen (Germany); Luszczak, A. [T. Kosciuszko Cracow University of Technology, Cracow (Poland); Olness, F. [SMU Physics, Box 0175, Dallas, TX (United States); Placakyte, R. [Universitaet Hamburg, Institut fuer Theoretische Physik, Hamburg (Germany); Radescu, V. [University of Oxford, Oxford, OX1 3NP (United Kingdom); CERN, Geneva 23 (Switzerland); Sadykov, R.; Shvydkin, P. [Joint Institute for Nuclear Research (JINR), Dubna, Moscow Region (Russian Federation); Lisovyi, M. [Ruprecht-Karls-Universitaet Heidelberg, Physikalisches Institut, Heidelberg (Germany); Collaboration: xFitter Developers' team

2017-06-15

Achieving the highest precision for theoretical predictions at the LHC requires the calculation of hard-scattering cross sections that include perturbative QCD corrections up to (N)NNLO and electroweak (EW) corrections up to NLO. Parton distribution functions (PDFs) need to be provided with matching accuracy, which in the case of QED effects involves introducing the photon parton distribution of the proton, xγ(x,Q{sup 2}). In this work a determination of the photon PDF from fits to recent ATLAS measurements of high-mass Drell-Yan dilepton production at √(s) = 8 TeV is presented. This analysis is based on the xFitter framework, and has required improvements both in the APFEL program, to account for NLO QED effects, and in the aMCfast interface to account for the photon-initiated contributions in the EW calculations within MadGraph5aMC rate at NLO. The results are compared with other recent QED fits and determinations of the photon PDF, consistent results are found. (orig.)

Medusa: una aplicación de la integración entre PDF y ASP:NET®

Directory of Open Access Journals (Sweden)

CARLOS M. ZAPATA J.

2005-01-01

Full Text Available El formato de Documentos Portátiles (PDF por sus siglas en inglés se ha venido consolidando en el mundo como un estándar para la transmisión de documentos vía Web, especialmente reconocidos como sólo lectura. Sin embargo, poco se han trabajado las capacidades interactivas de dicha tecnología, en particular para la captura y transmisión de datos a un servidor. En este artículo se presenta MEDUSA, un software basado en tecnología PDF que interactúa con ASP® y ASP.NET® para el manejo de una plataforma de compras vía Web.

Modeling the Bergeron-Findeisen Process Using PDF Methods With an Explicit Representation of Mixing

Science.gov (United States)

Jeffery, C.; Reisner, J.

2005-12-01

Currently, the accurate prediction of cloud droplet and ice crystal number concentration in cloud resolving, numerical weather prediction and climate models is a formidable challenge. The Bergeron-Findeisen process in which ice crystals grow by vapor deposition at the expense of super-cooled droplets is expected to be inhomogeneous in nature--some droplets will evaporate completely in centimeter-scale filaments of sub-saturated air during turbulent mixing while others remain unchanged [Baker et al., QJRMS, 1980]--and is unresolved at even cloud-resolving scales. Despite the large body of observational evidence in support of the inhomogeneous mixing process affecting cloud droplet number [most recently, Brenguier et al., JAS, 2000], it is poorly understood and has yet to be parameterized and incorporated into a numerical model. In this talk, we investigate the Bergeron-Findeisen process using a new approach based on simulations of the probability density function (PDF) of relative humidity during turbulent mixing. PDF methods offer a key advantage over Eulerian (spatial) models of cloud mixing and evaporation: the low probability (cm-scale) filaments of entrained air are explicitly resolved (in probability space) during the mixing event even though their spatial shape, size and location remain unknown. Our PDF approach reveals the following features of the inhomogeneous mixing process during the isobaric turbulent mixing of two parcels containing super-cooled water and ice, respectively: (1) The scavenging of super-cooled droplets is inhomogeneous in nature; some droplets evaporate completely at early times while others remain unchanged. (2) The degree of total droplet evaporation during the initial mixing period depends linearly on the mixing fractions of the two parcels and logarithmically on Damköhler number (Da)---the ratio of turbulent to evaporative time-scales. (3) Our simulations predict that the PDF of Lagrangian (time-integrated) subsaturation (S) goes as

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796.pdf | sept 25 2004 | curr sci | Indian Academy of Sciences

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

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Indian Academy of Sciences (India)

(4). Conversely, if (x; y) satisfies (4) it satisfies (1). Thus the path traced by the walker is the set of points {W : d(W; C) = r}, where. C = µ5a. 3. ;0¶ ; r = 4. 3 a: That is, the path traced by W is a circle with center at. ³5a. 3. ;0´ and radius 4. 3 a. Note that the center of this circle is in the segment A1A2 on the X-axis. Its distance to.

Dental Health - Multiple Languages

Science.gov (United States)

... Health Resource Center Burmese (myanma bhasa) Expand Section Betel Nut - English PDF Betel Nut - myanma bhasa (Burmese) PDF Orange County North ... California Dental Association Karen (S’gaw Karen) Expand Section Betel Nut - English PDF Betel Nut - S’gaw Karen (Karen) ...

Evaluation of scalar mixing and time scale models in PDF simulations of a turbulent premixed flame

Energy Technology Data Exchange (ETDEWEB)

Stoellinger, Michael; Heinz, Stefan [Department of Mathematics, University of Wyoming, Laramie, WY (United States)

2010-09-15

Numerical simulation results obtained with a transported scalar probability density function (PDF) method are presented for a piloted turbulent premixed flame. The accuracy of the PDF method depends on the scalar mixing model and the scalar time scale model. Three widely used scalar mixing models are evaluated: the interaction by exchange with the mean (IEM) model, the modified Curl's coalescence/dispersion (CD) model and the Euclidean minimum spanning tree (EMST) model. The three scalar mixing models are combined with a simple model for the scalar time scale which assumes a constant C{sub {phi}}=12 value. A comparison of the simulation results with available measurements shows that only the EMST model calculates accurately the mean and variance of the reaction progress variable. An evaluation of the structure of the PDF's of the reaction progress variable predicted by the three scalar mixing models confirms this conclusion: the IEM and CD models predict an unrealistic shape of the PDF. Simulations using various C{sub {phi}} values ranging from 2 to 50 combined with the three scalar mixing models have been performed. The observed deficiencies of the IEM and CD models persisted for all C{sub {phi}} values considered. The value C{sub {phi}}=12 combined with the EMST model was found to be an optimal choice. To avoid the ad hoc choice for C{sub {phi}}, more sophisticated models for the scalar time scale have been used in simulations using the EMST model. A new model for the scalar time scale which is based on a linear blending between a model for flamelet combustion and a model for distributed combustion is developed. The new model has proven to be very promising as a scalar time scale model which can be applied from flamelet to distributed combustion. (author)

351.pdf | mar2007 | jbiosci | www.ias.ac.in | | http: | Indian Academy ...

Indian Academy of Sciences (India)

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77 FR 37653 - Manufacturing Extension Partnership (MEP) Centers for Arizona, Maryland and Rhode Island...

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2012-06-22

... committed local partners and demonstrated experience of the leadership team in manufacturing, outreach and.../FR-2008-02-11/pdf/E8-2482.pdf . Employer/Taxpayer Identification Number (EIN/TIN), Dun and Bradstreet...

0011-0030.IEEE 754: 64 Bit Double Precision FloatsThis.pdf | 01 ...

Indian Academy of Sciences (India)

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Methylation of zebularine: a quantum mechanical study incorporating interactive 3D pdf graphs.

Science.gov (United States)

Selvam, Lalitha; Vasilyev, Vladislav; Wang, Feng

2009-08-20

Methylation of a cytidine deaminase inhibitor, 1-(beta-D-ribofuranosyl)-2-pyrimidone (i.e., zebularine (zeb)), which produces 1-(beta-D-ribofuranosyl)-5-methyl-2-pyrimidinone (d5), has been investigated using density functional theory models. The optimized structures of zeb and d5 and the valence orbitals primarily responsible for the methylation in d5 are presented using state-of-the-art interactive (on a computer or online) three-dimensional (3D) graphics in a portable document format (pdf) file, 3D-PDF (http://www.web3d.org/x3d/vrml/ ). The facility to embed 3D molecular structures into pdf documents has been developed jointly at Swinburne University of Technology and the National Computational Infrastructure, the Australian National University. The methyl fragment in the base moiety shows little effect on the sugar puckering but apparently affects anisotropic properties, such as condensed Fukui functions. Binding energy spectra, both valence space and core space, are noticeably affected; in particular, in the outer-valence space (e.g., IP < 20 eV). The methyl fragment delocalizes and diffuses into almost all valence space, but orbitals 8 (57a, IP = 12.57 eV), 18 (47a, IP = 14.70 eV), and 37 (28a, IP = 22.15 eV) are identified as fingerprint for the methyl fragment. In the inner shell, however, the impact of the methyl can be localized and identified by chemical shift. A small, global, red shift is found for the O-K, N-K and sugar C-K spectra, whereas the base C-K spectrum exhibits apparent methyl-related changes.

Applying an economical scale-aware PDF-based turbulence closure model in NOAA NCEP GCMs.

Science.gov (United States)

Belochitski, A.; Krueger, S. K.; Moorthi, S.; Bogenschutz, P.; Cheng, A.

2017-12-01

A novel unified representation of sub-grid scale (SGS) turbulence, cloudiness, and shallow convection is being implemented into the NOAA NCEP Global Forecasting System (GFS) general circulation model. The approach, known as Simplified High Order Closure (SHOC), is based on predicting a joint PDF of SGS thermodynamic variables and vertical velocity, and using it to diagnose turbulent diffusion coefficients, SGS fluxes, condensation, and cloudiness. Unlike other similar methods, comparatively few new prognostic variables needs to be introduced, making the technique computationally efficient. In the base version of SHOC it is SGS turbulent kinetic energy (TKE), and in the developmental version — SGS TKE, and variances of total water and moist static energy (MSE). SHOC is now incorporated into a version of GFS that will become a part of the NOAA Next Generation Global Prediction System based around NOAA GFDL's FV3 dynamical core, NOAA Environmental Modeling System (NEMS) coupled modeling infrastructure software, and a set novel physical parameterizations. Turbulent diffusion coefficients computed by SHOC are now used in place of those produced by the boundary layer turbulence and shallow convection parameterizations. Large scale microphysics scheme is no longer used to calculate cloud fraction or the large-scale condensation/deposition. Instead, SHOC provides these quantities. Radiative transfer parameterization uses cloudiness computed by SHOC. An outstanding problem with implementation of SHOC in the NCEP global models is excessively large high level tropical cloudiness. Comparison of the moments of the SGS PDF diagnosed by SHOC to the moments calculated in a GigaLES simulation of tropical deep convection case (GATE), shows that SHOC diagnoses too narrow PDF distributions of total cloud water and MSE in the areas of deep convective detrainment. A subsequent sensitivity study of SHOC's diagnosed cloud fraction (CF) to higher order input moments of the SGS PDF

Denationalized Citizenship Theory: What Is the Role of Citizenship Theory in Homeland Security?

Science.gov (United States)

2011-12-01

20Citizenship/Citizenship%20R esource %20Center%20Site/Publications/M-76.pdf (accessed 04-01- 2011). 107 U.S. Citizenship and Immigration Services... esource %20Center%20Site/Publications/PDFs/M-794.pdf (accessed 04- 01-2011). U.S. Citizenship and Immigration Services. Fact Sheet: Task Force on New

Drosophila DH31 Neuropeptide and PDF Receptor Regulate Night-Onset Temperature Preference.

Science.gov (United States)

Goda, Tadahiro; Tang, Xin; Umezaki, Yujiro; Chu, Michelle L; Hamada, Fumika N

2016-11-16

Body temperature exhibits rhythmic fluctuations over a 24 h period (Refinetti and Menaker, 1992) and decreases during the night, which is associated with sleep initiation (Gilbert et al., 2004; Kräuchi, 2007a,b). However, the underlying mechanism of this temperature decrease is largely unknown. We have previously shown that Drosophila exhibit a daily temperature preference rhythm (TPR), in which their preferred temperatures increase during the daytime and then decrease at the transition from day to night (night-onset) (Kaneko et al., 2012). Because Drosophila are small ectotherms, their body temperature is very close to that of the ambient temperature (Stevenson, 1985), suggesting that their TPR generates their body temperature rhythm. Here, we demonstrate that the neuropeptide diuretic hormone 31 (DH31) and pigment-dispersing factor receptor (PDFR) contribute to regulate the preferred temperature decrease at night-onset. We show that PDFR and tethered-DH31 expression in dorsal neurons 2 (DN2s) restore the preferred temperature decrease at night-onset, suggesting that DH31 acts on PDFR in DN2s. Notably, we previously showed that the molecular clock in DN2s is important for TPR. Although PDF (another ligand of PDFR) is a critical factor for locomotor activity rhythms, Pdf mutants exhibit normal preferred temperature decreases at night-onset. This suggests that DH31-PDFR signaling specifically regulates a preferred temperature decrease at night-onset. Thus, we propose that night-onset TPR and locomotor activity rhythms are differentially controlled not only by clock neurons but also by neuropeptide signaling in the brain. Body temperature rhythm (BTR) is fundamental for the maintenance of functions essential for homeostasis, such as generating metabolic energy and sleep. One major unsolved question is how body temperature decreases dramatically during the night. Previously, we demonstrated that a BTR-like mechanism, referred to as temperature preference rhythm (TPR

An Investigation of a Hybrid Mixing Model for PDF Simulations of Turbulent Premixed Flames

Science.gov (United States)

Zhou, Hua; Li, Shan; Wang, Hu; Ren, Zhuyin

2015-11-01

Predictive simulations of turbulent premixed flames over a wide range of Damköhler numbers in the framework of Probability Density Function (PDF) method still remain challenging due to the deficiency in current micro-mixing models. In this work, a hybrid micro-mixing model, valid in both the flamelet regime and broken reaction zone regime, is proposed. A priori testing of this model is first performed by examining the conditional scalar dissipation rate and conditional scalar diffusion in a 3-D direct numerical simulation dataset of a temporally evolving turbulent slot jet flame of lean premixed H2-air in the thin reaction zone regime. Then, this new model is applied to PDF simulations of the Piloted Premixed Jet Burner (PPJB) flames, which are a set of highly shear turbulent premixed flames and feature strong turbulence-chemistry interaction at high Reynolds and Karlovitz numbers. Supported by NSFC 51476087 and NSFC 91441202.

77 FR 12563 - Manufacturing Extension Partnership (MEP) Centers for South Dakota and Kentucky; Availability of...

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2012-03-01

.... This includes committed local partners and demonstrated experience of the leadership team in.../FR-2008-02-11/pdf/E8-2482.pdf . Employer/Taxpayer Identification Number (EIN/TIN), Dun and Bradstreet...

Simulations of Spray Reacting Flows in a Single Element LDI Injector With and Without Invoking an Eulerian Scalar PDF Method

Science.gov (United States)

Shih, Tsan-Hsing; Liu, Nan-Suey

2012-01-01

This paper presents the numerical simulations of the Jet-A spray reacting flow in a single element lean direct injection (LDI) injector by using the National Combustion Code (NCC) with and without invoking the Eulerian scalar probability density function (PDF) method. The flow field is calculated by using the Reynolds averaged Navier-Stokes equations (RANS and URANS) with nonlinear turbulence models, and when the scalar PDF method is invoked, the energy and compositions or species mass fractions are calculated by solving the equation of an ensemble averaged density-weighted fine-grained probability density function that is referred to here as the averaged probability density function (APDF). A nonlinear model for closing the convection term of the scalar APDF equation is used in the presented simulations and will be briefly described. Detailed comparisons between the results and available experimental data are carried out. Some positive findings of invoking the Eulerian scalar PDF method in both improving the simulation quality and reducing the computing cost are observed.

Demographic changes and marker properties affect detection of human population differentiation

Directory of Open Access Journals (Sweden)

Sanichwankul Kittipong

2007-05-01

Full Text Available Abstract Background Differentiating genetically between populations is valuable for admixture and population stratification detection and in understanding population history. This is easy to achieve for major continental populations, but not for closely related populations. It has been claimed that a large marker panel is necessary to reliably distinguish populations within a continent. We investigated whether empirical genetic differentiation could be accomplished efficiently among three Asian populations (Hmong, Thai, and Chinese using a small set of highly variable markers (15 tetranucleotide and 17 dinucleotide repeats. Results Hmong could be differentiated from Thai and Chinese based on multi-locus genotypes, but Thai and Chinese were indistinguishable from each other. We found significant evidence for a recent population bottleneck followed by expansion in the Hmong that was not present in the Thai or Chinese. Tetranucleotide repeats were less useful than dinucleotide repeat markers in distinguishing between major continental populations (Asian, European, and African while both successfully distinguished Hmong from Thai and Chinese. Conclusion Demographic history contributes significantly to robust detection of intracontinental population structure. Populations having experienced a rapid size reduction may be reliably distinguished as a result of a genetic drift -driven redistribution of population allele frequencies. Tetranucleotide markers, which differ from dinucleotide markers in mutation mechanism and rate, are similar in information content to dinucleotide markers in this situation. These factors should be considered when identifying populations suitable for gene mapping studies and when interpreting interpopulation relationships based on microsatellite markers.

A Bayesian way to solve the pdf selection problem an application in geotechnical analysis

NARCIS (Netherlands)

Kerstens, J.G.M.

2007-01-01

Single probability density functions (pdf) are often selected based on a best-fit approach or the minimum description length (MDL) theorem that finds its description by the theory of complexity by Kolmogorov. However, it often occurs that random data cannot be accurately described by any of the

Illuminating the photon content of the proton within a global PDF analysis arXiv

CERN Document Server

Bertone, Valerio; Hartland, Nathan P.; Rojo, Juan

Precision phenomenology at the LHC requires accounting for both higher-order QCD and electroweak corrections as well as for photon-initiated subprocesses. Building upon the recent NNPDF3.1 fit, in this work the photon content of the proton is determined within a global analysis supplemented by the LUXqed constraint relating the photon PDF to lepton-proton scattering structure functions: NNPDF3.1luxQED. The uncertainties on the resulting photon PDF are at the level of a few percent, with photons carrying up to 0.5% of the proton's momentum. We study the phenomenological implications of NNPDF3.1luxQED at the LHC for Drell-Yan, vector boson pair, top quark pair, and Higgs plus vector boson production. We find that photon-initiated contributions can be significant for many processes, leading to corrections of up to 20%. Our results represent a state-of-the-art determination of the partonic structure of the proton including its photon component.

Analysis of subgrid scale mixing using a hybrid LES-Monte-Carlo PDF method

International Nuclear Information System (INIS)

Olbricht, C.; Hahn, F.; Sadiki, A.; Janicka, J.

2007-01-01

This contribution introduces a hybrid LES-Monte-Carlo method for a coupled solution of the flow and the multi-dimensional scalar joint pdf in two complex mixing devices. For this purpose an Eulerian Monte-Carlo method is used. First, a complex mixing device (jet-in-crossflow, JIC) is presented in which the stochastic convergence and the coherency between the scalar field solution obtained via finite-volume methods and that from the stochastic solution of the pdf for the hybrid method are evaluated. Results are compared to experimental data. Secondly, an extensive investigation of the micromixing on the basis of assumed shape and transported SGS-pdfs in a configuration with practical relevance is carried out. This consists of a mixing chamber with two opposite rows of jets penetrating a crossflow (multi-jet-in-crossflow, MJIC). Some numerical results are compared to available experimental data and to RANS based results. It turns out that the hybrid LES-Monte-Carlo method could achieve a detailed analysis of the mixing at the subgrid level

PDF uncertainties in precision electroweak measurements, including the W mass, in ATLAS

CERN Document Server

Cooper-Sarkar, Amanda; The ATLAS collaboration

2015-01-01

Now that the Higgs mass is known all the parameters of the SM are known- but with what accuracy? Precision EW measurements test the self-consistency of the SM- and thus can give hints of BSM physics. Precision measurements of $sin^2\\theta _W$ and the W mass are limited by PDF uncertainties This contribution discusses these uncertainties and what can be done to improve them.

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Indian Academy of Sciences (India)

Prakash

somatic cell nuclear transfer (SCNT) showed that the restriction ... the generation of embryonic-like induced pluripotent stem cells (iPS ... 1Division of Immunoepigenetics, Department of Immunology and Cell Biology, Research Center Borstel,.

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Indian Academy of Sciences (India)

The cationic complex upon crystallization from aqueous methanol solvent produces an assembly of ... Platinum complex; X-ray structure; electrochemistry; ILCT transition; water cluster. ..... fur atom from the Pt center in the oxidized form of the.

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Indian Academy of Sciences (India)

Asgari R, Institute for Studies in Theoretical Physics and Mathematics, Tehran, Iran asgari@theory.ipm.ac.ir. Awasthi ... Ghosh Barnali, S.N. Bose National Center for Basic Sciences, Kolkata ... Kumar Sudhish, Christ Church College, Kanpur.

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Indian Academy of Sciences (India)

2014-05-07

May 7, 2014 ... 1 and V KUMAR. 2,*. DST IRHPA Center for Excellence in Biological Rhythm Research,. 1 .... and other climatic conditions (Martin 1996). Differences .... The data were analysed by one-way analysis of variance with repeated ...

‘Why Would We Want Those Students Here?’: Bridges and Barriers to Building Campus Community Partnerships.

Directory of Open Access Journals (Sweden)

Vincent K. Her

2007-01-01

Full Text Available The Hmong American Studies Initiative (HASI at our Midwestern university had the promise and potential to become one of the first comprehensive Hmong American, community-supported academic programs in the U.S. Through four years of work to start and develop this program (2002-2006, we have learned many lessons regardingbridges and barriers to building campus-community partnerships. Here we highlight the benefits of HASI and the underlying politics that, in our view, have determined funding decisions and influenced campus-community relations. Included in this discussion are insights gained from dozens of meetings with Hmong American community leaders andstudents, university faculty and administrators, as well as personal interviews and group planning sessions. Drawing on our experiences during this multi-year project, we will share what we have done, what we have learned and where we are now. In the process,we would like to raise a timely question: Is it possible to build an academic program that seriously, substantively takes into account the values and perspectives of an ethnic community?

PDF models and synthetic model for the wind speed fluctuations based on the resolution of Langevin equation

International Nuclear Information System (INIS)

Calif, Rudy

2012-01-01

Highlights: ► Probability Density Functions are proposed to fit the wind speed fluctuations distributions for three representative classes. ► Stochastic simulations are performed using a Langevin equation for each class. ► The properties of simulated and measured wind speed sequences are close. -- Abstract: Wind energy production is very sensitive to turbulent wind speed. Thus rapid variation of wind speed due to changes in the local meteorological conditions can lead to electrical power variations of the order of the nominal power output, in particular when wind power variations on very short time scales, range at few seconds to 1 h, are considered. In small grid as they exist on islands (Guadeloupean Archipelago: French West Indies) such fluctuations can cause instabilities in case of intermediate power shortages. The developed analysis in reveals three main classes of time series for the wind speed fluctuations. In this work, Probability Density Functions (PDFs) are proposed to fit the wind speed fluctuations distributions in each class. After, to simulate wind speed fluctuations sequences, we use a stochastic differential equation, the Langevin equation considering Gaussian turbulence PDF (class I), Gram–Charlier PDF (class II) and a mixture of gaussian PDF (class III). The statistical and dynamical properties of simulated wind sequences are close to those of measured wind sequences, for each class.

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African Journals Online (AJOL)

Professor of Genetics (Cytogenetics), Faculty of Medicine, Ain Shams University, Cairo, Egypt. Hosam A Abdel-Ghany. Consultant of Medical Human Genetics, Medical Genetic Center, Ain Shams University, Cairo, Egypt. Nermin S Elsayed. Consultant of Medical Human Genetics, Medical Genetics Center, Ain Shams ...

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Indian Academy of Sciences (India)

2High-Tech Research Center, Shandong Academy of Agricultural Sciences; ... Some LEA protein genes were expressed at a high level in non-seed tissues such as root, stem, .... transcribed using PrimerScriptTM 1st Strand cDNA Synthesis.

The present state and future directions of PDF methods

Science.gov (United States)

Pope, S. B.

1992-01-01

The objectives of the workshop are presented in viewgraph format, as is this entire article. The objectives are to discuss the present status and the future direction of various levels of engineering turbulence modeling related to Computational Fluid Dynamics (CFD) computations for propulsion; to assure that combustion is an essential part of propulsion; and to discuss Probability Density Function (PDF) methods for turbulent combustion. Essential to the integration of turbulent combustion models is the development of turbulent model, chemical kinetics, and numerical method. Some turbulent combustion models typically used in industry are the k-epsilon turbulent model, the equilibrium/mixing limited combustion, and the finite volume codes.

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Indian Academy of Sciences (India)

In the first group, the paper by Nick Devereux reviews Hubble Space .... here that the STARK-B database is included in the new search facility for such data namely Virtual Atomic and Molecular Data Center (VAMDC – http://vamdc.org/).

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Indian Academy of Sciences (India)

IAS Admin

where Woodward was carried by four of his group in a sedan chair, on the .... arose from work on vitamin B. 12 . 1. .... asymmetric centers reflects a brilliant effort by Nature, and ..... expectations but also was pivotal in determining the correct.

Modeling non-Fickian dispersion by use of the velocity PDF on the pore scale

Science.gov (United States)

Kooshapur, Sheema; Manhart, Michael

2015-04-01

For obtaining a description of reactive flows in porous media, apart from the geometrical complications of resolving the velocities and scalar values, one has to deal with the additional reactive term in the transport equation. An accurate description of the interface of the reacting fluids - which is strongly influenced by dispersion- is essential for resolving this term. In REV-based simulations the reactive term needs to be modeled taking sub-REV fluctuations and possibly non-Fickian dispersion into account. Non-Fickian dispersion has been observed in strongly heterogeneous domains and in early phases of transport. A fully resolved solution of the Navier-Stokes and transport equations which yields a detailed description of the flow properties, dispersion, interfaces of fluids, etc. however, is not practical for domains containing more than a few thousand grains, due to the huge computational effort required. Through Probability Density Function (PDF) based methods, the velocity distribution in the pore space can facilitate the understanding and modelling of non-Fickian dispersion [1,2]. Our aim is to model the transition between non-Fickian and Fickian dispersion in a random sphere pack within the framework of a PDF based transport model proposed by Meyer and Tchelepi [1,3]. They proposed a stochastic transport model where velocity components of tracer particles are represented by a continuous Markovian stochastic process. In addition to [3], we consider the effects of pore scale diffusion and formulate a different stochastic equation for the increments in velocity space from first principles. To assess the terms in this equation, we performed Direct Numerical Simulations (DNS) for solving the Navier-Stokes equation on a random sphere pack. We extracted the PDFs and statistical moments (up to the 4th moment) of the stream-wise velocity, u, and first and second order velocity derivatives both independent and conditioned on velocity. By using this data and

Performing the processing required for automatically get a PDF/A version of the CERN Library documentation

CERN Document Server

Molina Garcia-Retamero, Antonio

2015-01-01

The aim of the project was to perform the processing required for automatically get a PDF/A version of the CERN Library documentation. For this, it is necessary to extract as much metadata as possible from the sources files, inject the required data into the original source files creating new ones ready for being compiled with all related dependencies. Besides, I’ve proposed the creation of a HTML version consistent with the PDF and navigable for easy access, I’ve been trying to perform some Natural Language Processing for extracting metadata, I’ve proposed the injection of the cern library documentation into the HTML version of the long writeups where it is referenced (for instance, when a CERN Library function is referenced in a sample code) Finally, I’ve designed and implemented a Graphical User Interface in order to simplify the process for the user.

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Indian Academy of Sciences (India)

2Administration Center, Shandong Academy of Information and Communication Technology, Jinan 250101, PR China. MS received 7 ... associated with deuterium–hydrogen exchange.12 Hence it is ... A typical picture of the crystal visualized along the [010] direction is .... However, the whole mixed system lies in the soft-.

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Indian Academy of Sciences (India)

Biology Department. Homi Bhabha Center for. The technique of chromatography is studied to bring forth the. Science Education (TIFR) underlying concepts such as adsorption, partition, polarity/. Mumbai 400005, India. non-polarity of a compound. The materials required are very simple such as chalk, starch, ink, etc.

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Indian Academy of Sciences (India)

R. Narasimhan (Krishtel eMaging) 1461 1996 Oct 15 13:05:22

2Columbia Astrophysics Laboratory, Columbia University, U.S.A.. 3National Astronomy and Ionosphere Center and Cornell University, U.S.A.. 4Department of Physics, Princeton University, U.S.A.. 5Jodrell Bank Observatory, University of Manchester, U.K.. 6Department of Astronomy, Cornell University, U.S.A.. Abstract.

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Indian Academy of Sciences (India)

M. Senthilkumar (Newgen Imaging) 1461 1996 Oct 15 13:05:22

sented and the maps are presented in the appropri- ate scales, in user-friendly formats and with clarity. With the objective of working towards effective procedures for microzonation of urban centers, the Programme Advisory and Monitoring Commit- tee (PAMC) of Seismology Division, Department of Science and Technology ...

Marx @ 200: Debating Capitalism & Perspectives for the Future of Radical Theory (combined PDF of all articles

Directory of Open Access Journals (Sweden)

Christian Fuchs

2018-05-01

Full Text Available Combined pdf of all articles published in the special issue "Marx @ 200: Debating Capitalism & Perspectives for the Future of Radical Theory", edited by Christian Fuchs and Lara Monticelli, tripleC: Communication, Capitalism & Critique 16 (2, 2018, pp. 406-741.

PDF sensitivity studies from ATLAS measurements

CERN Document Server

Hanna, Remie; The ATLAS collaboration

2015-01-01

Several measurements performed by the ATLAS collaboration are either useful to constrain the proton structure or are affected by its associated uncertainties. The strange-quark density is rather poorly known at low x. Measurements of the W+c production and the inclusive W and Z differential cross sections are found to constrain the strange-quark density. Drell-Yan cross section measurements performed above and below the Z peak region have a different sensitivity to parton flavour, parton momentum fraction x and scale Q compared to measurements on the Z peak and can also be used to constrain the photon content of the proton. Measurements of the inclusive jet and photon cross sections are standard candles and can be useful to constrain the medium and high x gluon densities. Precision electroweak studies performed by ATLAS can be limited by the current knowledge on the proton structure. Among those are the measurement of the effective weak mixing angle and the mass of the W boson. Dedicated PDF studies were perf...

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Indian Academy of Sciences (India)

ized neon and argon for laboratory plasma diagnostics. The shifts have been compared with existing experimental values. The obtained data will be included in the STARK-B database, which is a part of the Virtual. Atomic and Molecular Data Center – VAMDC. Key words. Stark broadening—atomic data—Ne I: line profiles.

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Indian Academy of Sciences (India)

spherical symmetric subclusters with masses M1 and M2 separated by a distance d. For the gravitational ... and spherical symmetry, and we move the center of the gravitational potential of the merging subcluster ... of the two shock waves are separated by 2.8 Mpc. The color image displays the temperature distribution.

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Indian Academy of Sciences (India)

YIMING LU1,3, PING HE2,∗, SHU-HUA MA3, GUO-ZHI LI4 and. SALEH MOBAYBEN1. 1Laboratory of Train Network, Department of Train Control Tech., Research Center of Product. & Tech., CRRC TANGSHAN CO., LTD, No. 3, Changqian Rd, Fengrun DIST, Tangshan,. Hebei, 063035, People's Republic of China. 2School ...

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Indian Academy of Sciences (India)

... investigated by means of laser diagnostics and an image converter camera. ... energy of plasma focus pulse was 4 kJ with a current of 400 kA (figures 1 and 2). ... mation of vanadium by the running deformation waves leads to significant .... 40.006.1.1.1129) and the Education and Science Center 'Integration' (Project No.

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Indian Academy of Sciences (India)

The above description of MnYk is rather indirect and we do not consider it very useful. Kemperman and Skibinsky [6], among others, gave explicit description of ... on the simplex Sk in the sense that the centering constants and the covariance matrix of the limiting MVN depend on the moments of D; see (3.12) and (3.13).

The impact of LHC jet data on the MMHT PDF fit at NNLO

Science.gov (United States)

Harland-Lang, L. A.; Martin, A. D.; Thorne, R. S.

2018-03-01

We investigate the impact of the high precision ATLAS and CMS 7 TeV measurements of inclusive jet production on the MMHT global PDF analysis at next-to-next-to-leading order (NNLO). This is made possible by the recent completion of the long-term project to calculate the NNLO corrections to the hard cross section. We find that a good description of the ATLAS data is not possible with the default treatment of experimental systematic errors, and propose a simplified solution that retains the dominant physical information of the data. We then investigate the fit quality and the impact on the gluon PDF central value and uncertainty when the ATLAS and CMS data are included in a MMHT fit. We consider both common choices for the factorization and renormalization scale, namely the inclusive jet transverse momentum, p_\\perp , and the leading jet p_\\perp , as well as the different jet radii for which the ATLAS and CMS data are made available. We find that the impact of these data on the gluon is relatively insensitive to these inputs, in particular the scale choice, while the inclusion of NNLO corrections tends to improve the data description somewhat and has a qualitatively similar though not identical impact on the gluon in comparison to NLO.

Three-Dimensional Reconstructions Come to Life – Interactive 3D PDF Animations in Functional Morphology

Science.gov (United States)

van de Kamp, Thomas; dos Santos Rolo, Tomy; Vagovič, Patrik; Baumbach, Tilo; Riedel, Alexander

2014-01-01

Digital surface mesh models based on segmented datasets have become an integral part of studies on animal anatomy and functional morphology; usually, they are published as static images, movies or as interactive PDF files. We demonstrate the use of animated 3D models embedded in PDF documents, which combine the advantages of both movie and interactivity, based on the example of preserved Trigonopterus weevils. The method is particularly suitable to simulate joints with largely deterministic movements due to precise form closure. We illustrate the function of an individual screw-and-nut type hip joint and proceed to the complex movements of the entire insect attaining a defence position. This posture is achieved by a specific cascade of movements: Head and legs interlock mutually and with specific features of thorax and the first abdominal ventrite, presumably to increase the mechanical stability of the beetle and to maintain the defence position with minimal muscle activity. The deterministic interaction of accurately fitting body parts follows a defined sequence, which resembles a piece of engineering. PMID:25029366

Joint constraints on galaxy bias and σ8 through the N-pdf of the galaxy number density

International Nuclear Information System (INIS)

Arnalte-Mur, Pablo; Martínez, Vicent J.; Vielva, Patricio; Sanz, José L.; Saar, Enn; Paredes, Silvestre

2016-01-01

We present a full description of the N-probability density function of the galaxy number density fluctuations. This N-pdf is given in terms, on the one hand, of the cold dark matter correlations and, on the other hand, of the galaxy bias parameter. The method relies on the assumption commonly adopted that the dark matter density fluctuations follow a local non-linear transformation of the initial energy density perturbations. The N-pdf of the galaxy number density fluctuations allows for an optimal estimation of the bias parameter (e.g., via maximum-likelihood estimation, or Bayesian inference if there exists any a priori information on the bias parameter), and of those parameters defining the dark matter correlations, in particular its amplitude (σ 8 ). It also provides the proper framework to perform model selection between two competitive hypotheses. The parameters estimation capabilities of the N-pdf are proved by SDSS-like simulations (both, ideal log-normal simulations and mocks obtained from Las Damas simulations), showing that our estimator is unbiased. We apply our formalism to the 7th release of the SDSS main sample (for a volume-limited subset with absolute magnitudes M r  ≤ −20). We obtain b-circumflex  = 1.193 ± 0.074 and σ-bar 8  = 0.862 ± 0.080, for galaxy number density fluctuations in cells of the size of 30h −1 Mpc. Different model selection criteria show that galaxy biasing is clearly favoured

HiQ - A high-Q diffractometer for PDF measurements

International Nuclear Information System (INIS)

Brunelli, M.; Fischer, H.E.; Gaehler, R.; Chatterji, T.

2011-01-01

The local structure of many important functional materials is often different from the average structure, as revealed by diffraction, due to, e.g. doping, mixed site occupancy, or formation of time-dependent local distortions. To get information on both the average and the local structures one needs to perform a joint Rietveld and PDF (Pair Distribution Function) analysis of the total scattering, for which we need data to Q = 30 - 35 Angstroms with Δd/d ∼ 3*10 -3 . Here, we describe how the hot-source diffractometer D4 can be adapted to achieve this capability, and outline one possible design of a dedicated high-Q diffractometer at the ILL (Laue Langevin Institute), using the vacant inclined hot-neutron beam IH2. (authors)

Environmental Sensitivity Index (ESI) Atlas: West Peninsular Florida Volume 2, maps in portable document format (pdf) (NODC Accession 0006394)

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — This data set comprises the Environmental Sensitivity Index (ESI) maps in Portable Document Format (.PDF) for the shoreline of lower West Peninsular Florida (to...

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Indian Academy of Sciences (India)

Consider the longer edges of the cards to be along the same direction and the cards to be overhanging to the ... center of gravity of the top i· cards is exactly in line with the right edge of the i + 1-th card from the top. .... at the edges) due to loading effect is minimised,. (b) There is no external effect like earth vibration which.

Health Information in Haitian Creole (Kreyol ayisyen)

Science.gov (United States)

... a Hurricane - English PDF Be Safe After a Hurricane - Kreyol ayisyen (Haitian Creole) PDF Centers for Disease Control and Prevention I Expand Section Immunization Global TravEpiNet (GTEN) Travelers' Rapid Health Information Portal - English HTML Global TravEpiNet (GTEN) Travelers' Rapid ...

Treatment Methods for Kidney Failure in Children

Science.gov (United States)

... undercooked meats wear gloves when gardening or working outdoors avoid caring for pets report any signs or ... Know (PDF, 1.67 MB) U.S. Department of Health and Human Services, Centers for Medicare ... Benefits for Children with Disabilities (PDF, 413 KB) Clinical ...

Demonstration of thin film pair distribution function analysis (tfPDF for the study of local structure in amorphous and crystalline thin films

Directory of Open Access Journals (Sweden)

Kirsten M. Ø. Jensen

2015-09-01

Full Text Available By means of normal-incidence, high-flux and high-energy X-rays, total scattering data for pair distribution function (PDF analysis have been obtained from thin films (tf, suitable for local structure analysis. By using amorphous substrates as support for the films, the standard Rapid Acquisition PDF setup can be applied and the scattering signal from the film can be isolated from the total scattering data through subtraction of an independently measured background signal. No angular corrections to the data are needed, as would be the case for grazing incidence measurements. The `tfPDF' method is illustrated through studies of as-deposited (i.e. amorphous and crystalline FeSb3 films, where the local structure analysis gives insight into the stabilization of the metastable skutterudite FeSb3 phase. The films were prepared by depositing ultra-thin alternating layers of Fe and Sb, which interdiffuse and after annealing crystallize to form the FeSb3 structure. The tfPDF data show that the amorphous precursor phase consists of corner-sharing FeSb6 octahedra with motifs highly resembling the local structure in crystalline FeSb3. Analysis of the amorphous structure allows the prediction of whether the final crystalline product will form the FeSb3 phase with or without excess Sb present. The study thus illustrates how analysis of the local structure in amorphous precursor films can help to understand crystallization processes of metastable phases and opens for a range of new local structure studies of thin films.

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Indian Academy of Sciences (India)

of n-digit numbers that are multiples of 2n and which have no zeros in their ... Center for Artificol Intelligence and Robotics ... even) multiple of 2k. Hence the number of multiples of 2k+l with Ao odd (resp. even) is 5 Ok (resp. 4 Ek ) because there are 5 possible choices for Ao namely 1,3,5,7 and 9 (resp. 4 choices namely 2,4 ...

Commercial broth microdilution panel validation and reproducibility trials for NVP PDF-713 (LBM 415), a novel inhibitor of bacterial peptide deformylase.

Science.gov (United States)

Fritsche, T R; Moet, G J; Jones, R N

2004-09-01

NVP PDF-713 (LBM 415) is a peptide deformylase inhibitor being progressed into clinical trials. Dry-form broth microdilution panels of NVP PDF-713 were compared to reference MIC panels of 552 recent clinical isolates. Most (99.2%) dry-form MIC results were within +/- 1 log(2) dilution of the reference panel MICs. Of the bacteria tested, Streptococcus pneumoniae and Haemophilus influenzae showed a bias towards higher and lower MICs, respectively. Same-day and between-day reproducibility tests showed that 98.9% and 96.7% of MIC values, respectively, were within +/- 1 log(2) dilution step, thereby demonstrating a high degree of reliability of the dry-form MIC product for clinical studies.

Lagrangian Investigation of Auto-ignition in a Hydrogen Jet Flame in a Vitiated Co-flow: Animations of Particle Trajectories in Composition Space from PDF Model Calculations

OpenAIRE

Wang, Haifeng; Pope, Stephen B.

2007-01-01

PDF model calculations have been performed of the Cabra lifted hydrogen flame in a vitiated co-flow. Particle trajectories are extracted from the Lagrangian particle method used to solve the modeled PDF equation. The particle trajectories in the mixture fraction-temperature plane reveal (at successive downstream locations): essentially inert mixing between the cold fuel jet and the hot co-flow; the auto-ignition of very lean particles; and, subsequent mixing and reaction, leading to near-equi...

Turbulent piloted partially-premixed flames with varying levels of O2/N2: stability limits and PDF calculations

Science.gov (United States)

Juddoo, Mrinal; Masri, Assaad R.; Pope, Stephen B.

2011-12-01

This paper reports measured stability limits and PDF calculations of piloted, turbulent flames of compressed natural gas (CNG) partially-premixed with either pure oxygen, or with varying levels of O2/N2. Stability limits are presented for flames of CNG fuel premixed with up to 20% oxygen as well as CNG-O2-N2 fuel where the O2 content is varied from 8 to 22% by volume. Calculations are presented for (i) Sydney flame B [Masri et al. 1988] which uses pure CNG as well as flames B15 to B25 where the CNG is partially-premixed with 15-25% oxygen by volume, respectively and (ii) Sandia methane-air (1:3 by volume) flame E [Barlow et al. 2005] as well as new flames E15 and E25 that are partially-premixed with 'reconstituted air' where the O2 content in nitrogen is 15 and 25% by volume, respectively. The calculations solve a transported PDF of composition using a particle-based Monte Carlo method and employ the EMST mixing model as well as detailed chemical kinetics. The addition of oxygen to the fuel increases stability, shortens the flames, broadens the reaction zone, and shifts the stoichiometric mixture fraction towards the inner side of the jet. It is found that for pure CNG flames where the reaction zone is narrow (∼0.1 in mixture fraction space), the PDF calculations fail to reproduce the correct level of local extinction on approach to blow-off. A broadening in the reaction zone up to about 0.25 in mixture fraction space is needed for the PDF/EMST approach to be able to capture these finite-rate chemistry effects. It is also found that for the same level of partial premixing, increasing the O2/N2 ratio increases the maximum levels of CO and NO but shifts the peak to richer mixture fractions. Over the range of oxygenation investigated here, stability limits have shown to improve almost linearly with increasing oxygen levels in the fuel and with increasing the contribution of release rate from the pilot.

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African Journals Online (AJOL)

Peritoneal drainage versus laparotomy in necrotizing enterocolitis: A continued asked question. Abstract PDF · Vol 13, No 4 (2017) - Articles Laparoscopic versus open splenectomy in children with benign hematological diseases in children: a single-center experience. Abstract PDF. ISSN: 1687-4137. AJOL African Journals ...

Ligand and Structure-Based Approaches for the Identification of Peptide Deformylase Inhibitors as Antibacterial Drugs.

Science.gov (United States)

Gao, Jian; Liang, Li; Zhu, Yasheng; Qiu, Shengzhi; Wang, Tao; Zhang, Ling

2016-07-15

Peptide deformylase (PDF) is a metalloprotease catalyzing the removal of a formyl group from newly synthesized proteins, which makes it an important antibacterial drug target. Given the importance of PDF inhibitors like actinonin in antibacterial drug discovery, several reported potent PDF inhibitors were used to develop pharmacophore models using the Galahad module of Sybyl 7.1 software. Generated pharmacophore models were composed of two donor atom centers, four acceptor atom centers and two hydrophobic groups. Model-1 was screened against the Zinc database and several compounds were retrieved as hits. Compounds with Qfit values of more than 60 were employed to perform a molecular docking study with the receptor Escherichia coli PDF, then compounds with docking score values of more than 6 were used to predict the in silico pharmacokinetic and toxicity risk via OSIRIS property explorer. Two known PDF inhibitors were also used to perform a molecular docking study with E. coli PDF as reference molecules. The results of the molecular docking study were validated by reproducing the crystal structure of actinonin. Molecular docking and in silico pharmacokinetic and toxicity prediction studies suggested that ZINC08740166 has a relatively high docking score of 7.44 and a drug score of 0.78.

Heat shock factors HsfB1 and HsfB2b are involved in the regulation of Pdf1.2 expression and pathogen resistance in Arabidopsis.

Science.gov (United States)

Kumar, Mukesh; Busch, Wolfgang; Birke, Hannah; Kemmerling, Birgit; Nürnberger, Thorsten; Schöffl, Friedrich

2009-01-01

In order to assess the functional roles of heat stress-induced class B-heat shock factors in Arabidopsis, we investigated T-DNA knockout mutants of AtHsfB1 and AtHsfB2b. Micorarray analysis of double knockout hsfB1/hsfB2b plants revealed as strong an up-regulation of the basal mRNA-levels of the defensin genes Pdf1.2a/b in mutant plants. The Pdf expression was further enhanced by jasmonic acid treatment or infection with the necrotrophic fungus Alternaria brassicicola. The single mutant hsfB2b and the double mutant hsfB1/B2b were significantly improved in disease resistance after A. brassicicola infection. There was no indication for a direct interaction of Hsf with the promoter of Pdf1.2, which is devoid of perfect HSE consensus Hsf-binding sequences. However, changes in the formation of late HsfA2-dependent HSE binding were detected in hsfB1/B2b plants. This suggests that HsfB1/B2b may interact with class A-Hsf in regulating the shut-off of the heat shock response. The identification of Pdf genes as targets of Hsf-dependent negative regulation is the first evidence for an interconnection of Hsf in the regulation of biotic and abiotic responses.

Joint constraints on galaxy bias and σ{sub 8} through the N-pdf of the galaxy number density

Energy Technology Data Exchange (ETDEWEB)

Arnalte-Mur, Pablo; Martínez, Vicent J. [Observatori Astronòmic de la Universitat de València, C/ Catedràtic José Beltrán, 2, 46980 Paterna, València (Spain); Vielva, Patricio; Sanz, José L. [Instituto de Física de Cantabria (CSIC-UC), Avda. de Los Castros s/n, E-39005—Santander (Spain); Saar, Enn [Cosmology Department, Tartu Observatory, Observatooriumi 1, Tõravere (Estonia); Paredes, Silvestre, E-mail: pablo.arnalte@uv.es, E-mail: vielva@ifca.unican.es, E-mail: martinez@uv.es, E-mail: sanz@ifca.unican.es, E-mail: saar@to.ee, E-mail: silvestre.paredes@upct.es [Departamento de Matemática Aplicada y Estadística, Universidad Politécnica de Cartagena, C/Dr. Fleming s/n, 30203 Cartagena (Spain)

2016-03-01

We present a full description of the N-probability density function of the galaxy number density fluctuations. This N-pdf is given in terms, on the one hand, of the cold dark matter correlations and, on the other hand, of the galaxy bias parameter. The method relies on the assumption commonly adopted that the dark matter density fluctuations follow a local non-linear transformation of the initial energy density perturbations. The N-pdf of the galaxy number density fluctuations allows for an optimal estimation of the bias parameter (e.g., via maximum-likelihood estimation, or Bayesian inference if there exists any a priori information on the bias parameter), and of those parameters defining the dark matter correlations, in particular its amplitude (σ{sub 8}). It also provides the proper framework to perform model selection between two competitive hypotheses. The parameters estimation capabilities of the N-pdf are proved by SDSS-like simulations (both, ideal log-normal simulations and mocks obtained from Las Damas simulations), showing that our estimator is unbiased. We apply our formalism to the 7th release of the SDSS main sample (for a volume-limited subset with absolute magnitudes M{sub r} ≤ −20). We obtain b-circumflex  = 1.193 ± 0.074 and σ-bar{sub 8} = 0.862 ± 0.080, for galaxy number density fluctuations in cells of the size of 30h{sup −1}Mpc. Different model selection criteria show that galaxy biasing is clearly favoured.

Using an opinion poll to build an obesity-prevention social marketing campaign for low-income Asian and Hispanic immigrants: report of findings.

Science.gov (United States)

Sugerman, Sharon; Backman, Desiree; Foerster, Susan B; Ghirardelli, Alyssa; Linares, Amanda; Fong, Amy

2011-01-01

To gain opinions from low-income, limited-English-speaking Hispanic and Asian immigrants for formative research in a social marketing campaign. Nineteen questions on obesity prevention-related topics were embedded into a larger random digit-dial survey investigating the effects of language and cultural barriers on health care access. Participants were selected by ethnic encoding from consumer databases. California's northern, southern, and Central Valley regions. Nine hundred and five adult Hispanic, Chinese, Vietnamese, Hmong, and Korean Californians from households Media usage, food stamp participation, health insurance, health problems, access and availability of fruits and vegetables (FVs) and physical activity, beliefs about overweight, and related regulation and policy change. Descriptive statistics and percentages for all questions. Latinos reported receiving most information from television; Hmong from radio. Hispanics, Koreans, and Vietnamese thought diabetes was the greatest health issue in California. Among Hmong, 83% thought FVs were too expensive, and 49% of Vietnamese thought good quality, affordable fresh FVs were too hard to find. Identifying characteristics and opinions that distinguish these ethnic immigrant populations better enables the Network for a Healthy California to develop culturally relevant social marketing campaigns and materials. Copyright © 2011 Society for Nutrition Education. Published by Elsevier Inc. All rights reserved.

MySQL/PHP web database applications for IPAC proposal submission

Science.gov (United States)

Crane, Megan K.; Storrie-Lombardi, Lisa J.; Silbermann, Nancy A.; Rebull, Luisa M.

2008-07-01

The Infrared Processing and Analysis Center (IPAC) is NASA's multi-mission center of expertise for long-wavelength astrophysics. Proposals for various IPAC missions and programs are ingested via MySQL/PHP web database applications. Proposers use web forms to enter coversheet information and upload PDF files related to the proposal. Upon proposal submission, a unique directory is created on the webserver into which all of the uploaded files are placed. The coversheet information is converted into a PDF file using a PHP extension called FPDF. The files are concatenated into one PDF file using the command-line tool pdftk and then forwarded to the review committee. This work was performed at the California Institute of Technology under contract to the National Aeronautics and Space Administration.

The PDF4LHC report on PDFs and LHC data : Results from Run I and preparation for Run II

NARCIS (Netherlands)

Rojo, Juan; Accardi, Alberto; Ball, Richard D.; Cooper-Sarkar, Amanda; Roeck, Albert de; Farry, Stephen; Ferrando, James; Forte, Stefano; Gao, Jun; Harland-Lang, Lucian; Huston, Joey; Glazov, Alexander; Gouzevitch, Maxime; Gwenlan, Claire; Lipka, Katerina; Lisovyi, Mykhailo; Mangano, Michelangelo L.; Nadolsky, Pavel; Perrozzi, Luca; Placakyte, Ringaile; Radescu, Voica; Salam, Gavin P.; Thorne, Robert S.

2015-01-01

The accurate determination of the Parton Distribution Functions (PDFs) of the proton is an essential ingredient of the Large Hadron Collider (LHC) program. PDF uncertainties impact a wide range of processes, from Higgs boson characterisation and precision Standard Model measurements to New Physics

An Analysis of Navy Managed Child Development Centers

Science.gov (United States)

2015-06-01

education system. The statistics gathered look at ethnicity/ sex /socio-economic background as well as results from various science, math, and language...Department. Retrieved from http://files.eric.ed.gov/fulltext/ED386297.pdf Laughlin, L. (2013). Who’s minding the kids ? Childcare arrangements: Spring 2011

A composition joint PDF method for the modeling of spray flames

Science.gov (United States)

Raju, M. S.

1995-01-01

This viewgraph presentation discusses an extension of the probability density function (PDF) method to the modeling of spray flames to evaluate the limitations and capabilities of this method in the modeling of gas-turbine combustor flows. The comparisons show that the general features of the flowfield are correctly predicted by the present solution procedure. The present solution appears to provide a better representation of the temperature field, particularly, in the reverse-velocity zone. The overpredictions in the centerline velocity could be attributed to the following reasons: (1) the use of k-epsilon turbulence model is known to be less precise in highly swirling flows and (2) the swirl number used here is reported to be estimated rather than measured.

Using the World Wide Web for GIDEP Problem Data Processing at Marshall Space Flight Center

Science.gov (United States)

McPherson, John W.; Haraway, Sandra W.; Whirley, J. Don

1999-01-01

Since April 1997, Marshall Space Flight Center has been using electronic transfer and the web to support our processing of the Government-Industry Data Exchange Program (GIDEP) and NASA ALERT information. Specific aspects include: (1) Extraction of ASCII text information from GIDEP for loading into Word documents for e-mail to ALERT actionees; (2) Downloading of GIDEP form image formats in Adobe Acrobat (.pdf) for internal storage display on the MSFC ALERT web page; (3) Linkage of stored GRDEP problem forms with summary information for access from the MSFC ALERT Distribution Summary Chart or from an html table of released MSFC ALERTs (4) Archival of historic ALERTs for reference by GIDEP ID, MSFC ID, or MSFC release date; (5) On-line tracking of ALERT response status using a Microsoft Access database and the web (6) On-line response to ALERTs from MSFC actionees through interactive web forms. The technique, benefits, effort, coordination, and lessons learned for each aspect are covered herein.

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African Journals Online (AJOL)

User

hnology Development Agency, Bioresources Development Center Katsina. ponding Author: mukhtar.gambo@umyu.edu.ng (08060839389). ipal cause of severe diarrhoea, with approximately 95% of child ... g something such as toys,.

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Indian Academy of Sciences (India)

Unknown

1977-03-02

Mar 2, 1977 ... 431. Keywords. Access; rural communities; sui generis legislation; traditional knowledge ..... According to the village elder, perhaps this modern health center had ...... her Education, Scientific and Technical Research, Trade.

Probing Amorphous Components in High Temperature TE Materials by in situ Total Scattering and the Pair Distribution Function (PDF) Method

DEFF Research Database (Denmark)

Reardon, Hazel; Iversen, Bo Brummerstedt; Blichfeld, Anders Bank

-I clathrate Ba8Ga16Ge30. This suggests that local structure reorientations in the cage are likely to be the root cause of the degradation of the structure. This deepens our understanding of disordered clathrates, and provides evidence that the PDF technique is an effective method for probing local structure.......e., by measuring both the Bragg and diffuse scattering from a sample. This method has rarely been exploited by the non-oxide thermoelectrics community. , , Treating total scattering data by the Pair Distribution Function method is a logical approach to understanding defects, disorder and amorphous components...... to heating cycles, then we are closer to distinguishing how we may generate materials that do not undergo specific structure reorientation processes, and/or how we may mitigate them before they occur. Here, we will present a total scattering and PDF study that probes the local structure of the Type...

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African Journals Online (AJOL)

AJTCAM

In Africa, farmers have indigenous methods to treat diseases using medicinal plant ..... North West China concluded that there were no publicly recognized specialists. .... Center for Scientific research, Indigenous Knowledge and Innovation, ...

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African Journals Online (AJOL)

home

2014-09-13

Sep 13, 2014 ... from the National Artificial Insemination Center (NAIC) to inseminate Horro cows that were ... crop and vegetable cultivation. Men family members ... skin diseases, internal and external parasites, bloating and calf pneumonia ...

75 FR 68812 - Notice of Submission of Proposed Information Collection to OMB; Restrictions on Assistance to...

Science.gov (United States)

2010-11-09

... forms of information technology, e.g., permitting electronic submission of responses. This Notice Also..., HUD 9886-Russian, HUD 9886-Hmong, HUD 9886-French. Description of the Need for the Information and its...

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African Journals Online (AJOL)

GB

2013-07-02

Jul 2, 2013 ... BACKGROUND: Anemia during pregnancy is a common problem in developing countries and affects both the mother's and her ... Centers for Disease Control and Prevention ... nutritional status (the major cause of anemia in.

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African Journals Online (AJOL)

Osondu

2014-03-13

Mar 13, 2014 ... This study is on influence of socio-economic development of urban centers on ... its implications for urban transport planning are .... export crops produced are cocoa, coffee, rubber ..... State, Nigeria, Unpublished Ph.D Thesis,.

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Low, Jan (CIP-Nairobi)

breeding progress for biofortified orange sweet potato (OSP) has been much faster than for the other ... are white- or yellow-fleshed containing no or low levels of beta-carotene, respectively. ...... Lima, Peru: International Potato Center;. 2014.

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rme

1Medical Genetic Center, Faculty of Medicine, Ain Shams University,. 2Community ... indications for amniocentesis in 60.8% were history of having previous child .... best location for placing the needle ..... leukemia, 8.5% for neural tube defects.

Histone modifications do not play a major role in salicylate-mediated suppression of jasmonate-induced PDF1.2 gene expression

NARCIS (Netherlands)

Koornneef, A.; Rindermann, Katja; Gatz, Christiane; Pieterse, C.M.J.

2008-01-01

Cross-talk between salicylic acid (SA) and jasmonic acid (JA) defense signaling pathways allows a plant to finely tune its response to the attacker encountered. In Arabidopsis, pharmacological experiments revealed that SA exerts a strong antagonistic effect on JA-responsive genes, such as PDF1.2,

In Situ PDF Study of the Nucleation and Growth of Intermetallic PtPb Nanocrystals

DEFF Research Database (Denmark)

Saha, Dipankar; Bojesen, Espen D.; Mamakhel, Mohammad Aref Hasen

2017-01-01

The mechanism of Pt and PtPb nanocrystal formation under supercritical ethanol conditions has been investigated by means of in situ X-ray total scattering and pair distribution function (PDF) analysis. The metal complex structures of two different platinum precursor solutions, chloroplatinic acid...... supercritical ethanol process for obtaining phase-pure hexagonal PtPb nanocrystals. The study thus highlights the importance of in situ studies in revealing atomic-scale information about nucleation mechanisms, which can be used in design of specific synthesis pathways, and the new continuous-flow process...

PDF uncertainties in the determination of the W boson mass and of the effective lepton mixing angle at the LHC

CERN Document Server

Rojo, Juan

2013-01-01

The precision measurement of the W boson mass allows to perform stringent consistency tests of the Standard Model by means of global electroweak fits. The accurate determination of the W boson mass is one of the legacy results of the Tevatron, where the experimental accuracy is such that $M_W$ is now limited by theoretical uncertainties related to the parton distributions of the proton. In this contribution, we show how to quantify the impact of PDF uncertainties in the measurement of $M_W$ at the Tevatron and the LHC by means of a template method, and study both the use of the W transverse mass and the lepton pT kinematical distributions to generate these templates. We also present preliminary results on the quantification of the PDF uncertainties in the determination of the effective lepton mixing angle at the LHC, based on the same template method as for the W mass determination

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African Journals Online (AJOL)

USER

The method of United States Food and Drug Administration, Center for Food. Safety and ... ready-to-eat and fast food joints. Samples were .... in China. Food control 17:971-974. Cheesbrough M. (2006). District Laboratory Practice in. Tropical ...

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African Journals Online (AJOL)

use

2011-12-14

Dec 14, 2011 ... erythrocytes were obtained as outdate red cell concentrates from the Center of Blood ... The heat stability of CGL was determined as described (Lima et al.,. 2005). ..... membrane of a single living sperm cell in maize. Sex Plant ...

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African Journals Online (AJOL)

Dr Olaleye

The use of plant material not only makes the process eco-friendly or less toxic, but also makes it less expensive. .... pyogenes were obtained from Center for Genetic Engineering ... mL of sterile distilled water in Erlenmeyer flask and boiled for.

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Dr F Cassim

4 The term “electronic or digital Pearl Harbour” was first coined by a tech writer one ... 8 It is important to distinguish between cyber crime and cyber terrorism. .... of Rami Yousef who orchestrated the 1993 World Trade Center bombing by using.

Stern-Center Potsdam; Stern-Center Potsdam

Energy Technology Data Exchange (ETDEWEB)

Anon.

1999-07-01

The ''Stern-Center Potsdam'' is a star-shaped shopping mall in the city center. [German] Das Stern-Center in Potsdam bietet als Einkaufszentrum vor den Toren Berlins Platz fuer eine Vielzahl von Geschaeften. Die sternfoermige Gebaeudestruktur des Centers bildet den Mittelpunkt des Stadtviertels 'Am Stern'. (orig.)

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African Journals Online (AJOL)

2005-01-27

Jan 27, 2005 ... Precipitation Climatology Center (GPCC) rain gauge data at a grid resolution of 1.0° x 1.0° ... Thus, satellite observations of rainfall are the best ..... 1a: Comparisons of mean seasonal (DJF and JJA) precipitation by GPCC rain ...

Genes and Disease: Prader-Willi Syndrome

Science.gov (United States)

... MD): National Center for Biotechnology Information (US); 1998-. Genes and Disease [Internet]. Show details National Center for ... 45K) PDF version of this title (3.8M) Gene sequence Genome view see gene locations Entrez Gene ...

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African Journals Online (AJOL)

Dr Olaleye

2Centers for Disease Control and Prevention, Rabies, Atlanta, Georgia, USA. 3Gimaf Veterinary .... The reduced cost can make rabies diagnosis available in cities and rural ... smear slides using acetone, the slides were air-dried at .... healthy rabies carrier dogs. .... lyssaviruses (Aravan and Khujand) from Central Asia:.

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Indian Academy of Sciences (India)

IAS Admin

to give a precise mathematical meaning to the equation and its solutions. ... precise characterization of the best possible approximation for a vast number of ... Group, which assists the development of mathematical training centers in the developing world. His legacy of research and service to the science and mathematics ...

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GB

2017-03-15

Mar 15, 2017 ... Funding:Center for Disease Control and. Prevention ... diagnosing specific toxicities and hence increasing ... estimated to live with HIV in Ethiopia; with adult ... decrement in morbidities and mortalities related to .... Potential risk factors to be included in multivariable model were selected if p-value in the.

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azade

2017-12-29

Dec 29, 2017 ... 3Medical Biology Research. Center .... The differences were reported as daily feed consumption. Hematology and ... Hematoxylin and eosin staining was used for microscopic examination of organs, including brain, thyroid glands, stomach .... Sex. Dose 0. Dose 100. Dose 200. Dose 500. RBC (M/µL). Male.

Information sharing guidebook for transportation management centers, emergency operations centers, and fusion centers

Science.gov (United States)

2010-06-01

This guidebook provides an overview of the mission and functions of transportation management centers, emergency operations centers, and fusion centers. The guidebook focuses on the types of information these centers produce and manage and how the sh...

Information sharing guidebook for transportation management centers, emergency operations centers, and fusion centers.

Science.gov (United States)

2010-06-01

This guidebook provides an overview of the mission and functions of transportation management centers, emergency operations centers, and fusion centers. The guidebook focuses on the types of information these centers produce and manage and how the sh...

Status of the TESS Science Processing Operations Center

Science.gov (United States)

Jenkins, Jon Michael; Caldwell, Douglas A.; Davies, Misty; Li, Jie; Morris, Robert L.; Rose, Mark; Smith, Jeffrey C.; Tenenbaum, Peter; Ting, Eric; Twicken, Joseph D.; Wohler, Bill

2018-06-01

The Transiting Exoplanet Survey Satellite (TESS) was selected by NASA’s Explorer Program to conduct a search for Earth’s closest cousins starting in 2018. TESS will conduct an all-sky transit survey of F, G and K dwarf stars between 4 and 12 magnitudes and M dwarf stars within 200 light years. TESS is expected to discover 1,000 small planets less than twice the size of Earth, and to measure the masses of at least 50 of these small worlds. The TESS science pipeline is being developed by the Science Processing Operations Center (SPOC) at NASA Ames Research Center based on the highly successful Kepler science pipeline. Like the Kepler pipeline, the TESS pipeline provides calibrated pixels, simple and systematic error-corrected aperture photometry, and centroid locations for all 200,000+ target stars observed over the 2-year mission, along with associated uncertainties. The pixel and light curve products are modeled on the Kepler archive products and will be archived to the Mikulski Archive for Space Telescopes (MAST). In addition to the nominal science data, the 30-minute Full Frame Images (FFIs) simultaneously collected by TESS will also be calibrated by the SPOC and archived at MAST. The TESS pipeline searches through all light curves for evidence of transits that occur when a planet crosses the disk of its host star. The Data Validation pipeline generates a suite of diagnostic metrics for each transit-like signature, and then extracts planetary parameters by fitting a limb-darkened transit model to each potential planetary signature. The results of the transit search are modeled on the Kepler transit search products (tabulated numerical results, time series products, and pdf reports) all of which will be archived to MAST. Synthetic sample data products are available at https://archive.stsci.edu/tess/ete-6.html.Funding for the TESS Mission has been provided by the NASA Science Mission Directorate.

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African Journals Online (AJOL)

Mervat Gamal Eldin Mansour

2012-02-21

Feb 21, 2012 ... lem in most European countries, and in the United States despite the advances in the quality of ... ity and mortality and antibiotic management, so rapid diag- ..... in Latin America, Asia, Africa, and Europe, using Center for. Disease .... of this work in improving management of HAP in our PICU. References.

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African Journals Online (AJOL)

McConnell, W. J.

2009-06-01

Jun 1, 2009 ... able analyses of the role of human agency and the effects of various policy ... Grâce à de nouvelles sources d'informations mais ... Center for Systems Integration & Sustainability .... be compared with 'control' locations that were similar in other ... areas with greater internal disparity of income (Gorenflo et al.

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African Journals Online (AJOL)

Babalola OE, Rachel Eye Center, PO Box 4108, Garki, Abuja. M ESUGA (MBBS). PKATO YOHANA (RN, Diploma in ... This can often best be achieved through eye camps. Outreach programmes also help to define the extent of .... prescribed eye drops for glaucoma. Ophthalmic Surg 1995;. 26(3): 233-6. Thomas R and ...