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41.
The North American Carbon Program (NACP) was formed to further the scientific understanding of sources, sinks, and stocks of carbon in Earth's environment. Carbon cycle science integrates multidisciplinary research, providing decision-support information for managing climate and carbon-related change across multiple sectors of society. This investigation uses the conceptual framework of communities of practice (CoP) to explore the role that the NACP has played in connecting researchers into a carbon cycle knowledge network, and in enabling them to conduct physical science that includes ideas from social science. A CoP describes the communities formed when people consistently engage in shared communication and activities toward a common passion or learning goal. We apply the CoP model by using keyword analysis of abstracts from scientific publications to analyze the research outputs of the NACP in terms of its knowledge domain. We also construct a co-authorship network from the publications of core NACP members, describe the structure and social pathways within the community. Results of the content analysis indicate that the NACP community of practice has substantially expanded its research on human and social impacts on the carbon cycle, contributing to a better understanding of how human and physical processes interact with one another. Results of the co-authorship social network analysis demonstrate that the NACP has formed a tightly connected community with many social pathways through which knowledge may flow, and that it has also expanded its network of institutions involved in carbon cycle research over the past seven years.  相似文献   
42.
美国作为世界上最发达的资本主义国家,其公民教育是成功的,美国公民教育的成功源于其方法的成功。探究美国公民教育方法,借鉴其宝贵经验,对建立一套符合我国实际的思想政治教育方法体系,促进我国思想政治教育的健康发展,具有重要的现实意义。  相似文献   
43.
Has the past decade of sustained economic growth and political transformations reversed Latin America's historical failure to secure market and social incorporation? To address this question this article draws on the experiences of Bolivia, Brazil, Chile, Peru and Uruguay by distinguishing between short‐term outcomes – which may depend on benign international conditions – and policy changes, which are more important for long‐term performance. It highlights the overall success of both Brazil and Uruguay and shows that the other countries have made more progress in terms of social than market incorporation.  相似文献   
44.
阿尔弗雷德·塞耶·马汉在其代表作《海权对历史的影响,1660—1783}中,奠定了“海权论”的基础:1.海权在一个民族和国家的形成过程中扮演了极其重要的角色;2.海权体系由各机构、设施、商船和海军舰队所组成;3.在国家各种力量中,海军是最重要的力量;4.海军的战略目标是在一场决战中打垮敌方舰队,夺取“制海权”;5.海军是美国争霸世界的基础。  相似文献   
45.
The present study extends prior research exploring the role of school contextual factors in predicting individual adolescent substance use by examining how a school’s racial composition is associated with American Indian adolescent tobacco and marijuana use. Using a subsample of 523 American Indian students from the restricted use Add Health data, we consider both individual and school contextual factors across 99 schools. Our results suggest that a school’s racial composition is associated with individual tobacco and marijuana use among American Indian youth, but in different ways depending upon the substance. Our findings illustrate the importance of extending research on the correlates of substance use for racial and ethnic minorities beyond studies examining African-Americans and/or Hispanics.  相似文献   
46.
ABSTRACT

African American adolescents continue to be disproportionately impacted by HIV, sexually transmitted infections (STIs), and unanticipated pregnancies. In-depth, face-to-face interviews among a convenience sample of 32 African American adolescents (16 male and 16 female) were used to explore the reasons why some adolescents decided to engage in sex while others chose to delay sexual debut. Data were analyzed using a thematic analysis. Among the overall sample, psychological motivations, external pressure, physical pleasure seeking, and relationship-related motivations were the major themes cited for engaging in sex by participants and their friends. External support, motivation to avoid negative consequences, not feeling ready or lacking interest in sex, and having negative views about sex were among the major reasons for delaying sex. Several of the emergent themes showed gender differences. Suggestions for future research include the need for sexual education, and STI/HIV prevention programs that are gender sensitive and flexible enough to accommodate multiple factors related to sexual debut.  相似文献   
47.
A study of 133 full time employees with parent care responsibilities investigated various factors that could reduce this group's future caregiving commitment to aging parents. Study factors included: caregiver attributes, level of caregiving involvement, job stress, tensions between the caregiver and the dependent parent, caregiver's level of physical and mental strain, and limited support from family and friends. The relationship between the caregiver and the parent was the best predictor of sustained commitment to caregiving. One aspect of the employees' work experience made a small, but important contribution to respondents' future care plans. Those employees who frequently adjusted their work schedule and routine to accommodate parent care demands were less likely to sustain their caregiving commitment. Reasons for these findings are explored and implications for social policy and clinical practice are discussed.  相似文献   
48.
This study examines acculturation attitude and its relation to social support among Asian immigrants. The data were collected from 242 Korean, Indian and Filipino immigrants in the USA using the Acculturation Attitude Scale and the Social Support Index. Findings showed that Koreans had a less positive attitude toward acculturation than did Indian and Filipino participants. Acculturation attitude was positively correlated with educational level and English fluency. This study also found a negative correlation between acculturation attitude and social support. Social support from friends and English fluency were identified as significant predictor variables in determining the level of acculturation attitude. These findings not only contribute to social work education and practice, but also increase cultural sensitivity and awareness in working with these populations.  相似文献   
49.
《Marriage & Family Review》2013,49(3-4):463-482
The purpose of this single parent families bookshelf is to provide potential users with a sampling of recent books that deal with various aspects of single parenting. Books are focused on the time period of 1980 to 1993. Resources include primarily North American and Canadian entries. The titles are presented in the fol- lowing categories: children and one-parent families, cross-cultural references, divorced single parents, ethnicity and single parent fami- lies, frameworks for examining single parent families, never-married biological teen mother headed families, practical guides to single parent family living, single fathers with custody following separa- tion and divorce, and special issues of journals focused on single parent families.  相似文献   
50.
SUMMARY

This study focuses on budgetary implications of domestic violence (DV) laws in the Latin American, Central American, and Caribbean (LAC) region. It is based on a survey of literature and data on DV legislation, literature reviews on the social and economic costs of DV, and an analysis of policies on DV in the region based on a survey of nonprofits working on DV in the region. The study shows DV is not being mainstreamed into ministerial budget line items as would be expected following the passage of law. There is clearly a difference between what is ratified in laws and the implementation of activities that follows those decisions. Funding for DV programs is insufficient to reach the entire target population and address the magnitude of the problem. Even after laws were passed, major sources of funding for DV services have continued to be discretionary funds from the ministries' budgets and international donor funds.  相似文献   
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