农户的非农参与和农业劳动供给研究——来自中国西部山区的证据

对不完全市场下的农业劳动供给研究,普遍采用不可分性或禀赋依赖假设,即农户的生产决策受消费相关因素的影响,而不是基于利润最大化目标。这种假设只对缺乏非农兼业或市场参与机会的农户成立,故应在决策研究中考虑农户受市场约束的异质性。利用内生选择的切换模型和陕西周至山区的农户调查数据,对农户的非农参与及农业劳动供给决策进行的实证研究表明：金融可及性和人力资本的分布特征决定了农户非农活动的参与及类型,反映了不完全市场对农户的约束状况,进而决定了农业劳动供给决策的影响机制。纯农户的农业劳动供给行为,除了受农户的生计资本影响外,还受其家庭结构等相关因素的影响。     

Academy of Human Resource Development

Abstract

This non-refereed contribution to Human Resource Development International represents the reflections of three US delegates who attended the 6th International Conference on HRD Research and Practice across Europe in Leeds, England, in May 2005. We begin by providing an overview of the conference programme, examine the conference theme as reflected in the scholarship presented at the conference and share our impressions of the conference atmosphere. We conclude with some final thoughts.     

Tracing the legacy of Anita Hill: The Thomas/Hill hearings and media coverage of sexual harassment

Many anecdotal accounts suggest that the Clarence Thomas/Anita Hill hearings had an important effect on the politics of sexual harassment allegations. This research examines one part of this phenomenon, reporting the results of content analysis of articles published in major newspapers the month after reports of allegations against Bob packwood and Bill Clinton. Our data analysis provides a preliminary look at the continued significance of the Hill/Thomas case today and how it affects public discourse about sexual harassment, providing strong evidence that Anita Hill has indeed found a place in modern American political history as a symbol for the sexual harassment issue. Clearly, the hearings have significantly impacted the ways in which the media and the public view allegations of sexual harassment brought against political figures. She is currently serving as a 2000–2001 APSA Congressional Fellow.     

Women and the Wild: Gender Socialization in Wilderness Recreation Advertising

Women are underrepresented in wilderness recreation despite the numerous benefits such activities provide to mental, physical, and emotional health. Several theories have been proposed linking women??s beliefs about their competence in outdoor spaces, fears of victimization, and concerns over retaining femininity to their lack of participation. We explore media representations of wilderness recreation as a possible agent in the gender socialization process that dissuades women from participation. Through analyzing advertisements from the 42 issues of Backpacker and Outside magazines published in 2008 and 2009 we find that, when women are shown, they are portrayed as having limited and passive roles in wilderness recreation. These advertisements also use the setting to reinforce traditional gender arrangements and paint women as consumers rather than conquerors of the wild. When women are shown as active participants in wilderness recreation, their physical accomplishments are often either downplayed or depicted as the endeavors of ??unique?? women who require feminization.     

Impact of urban structure on avian diversity along the Truckee River, USA

Urban riparian habitats are potentially important resources for native birds in arid ecosystems. Most studies have assessed the value of urban riparian habitat in terms of vegetation and natural resources; however, the surrounding land use and infrastructure may determine the viability of urban habitat. We studied the impact of urban structure, the combination of land use, infrastructure and vegetation variables that work together to shape the urban environment, on avian riparian habitat in the Truckee Meadows, Nevada, USA. Land use and infrastructure explained avian species richness and abundance better than local vegetation alone, but community resemblance was more strongly correlated to vegetation. Avian species guilds responded differentially to surrounding land use, suggesting there may be a functional difference between land use types. The best models for bird diversity used urban structure (both land use and vegetation) to describe potential habitat. Urban structure describes urban habitat in ways that vegetation variables alone cannot. Studies that ignore land use and infrastructure and other socioeconomic variables are likely missing key functional differences within urban ecosystems, and may miss the potential for compatible development that encourages both biodiversity and urban growth.     

The bad and the ugly: ethical concerns in participatory photographic methods with children living and working on the streets of Lima,Peru

Visual methods are particularly well suited for getting at the ways in which children living and working on the street understand their socio-spatial environment, and can bridge gaps between researcher and researched. In this study, adolescents who live and work on the streets of Lima are asked to take photographs, documenting their lives and their socio-spatial environments. While participatory methods such as photovoice can bring children and adolescents into the research process and can provide significant benefits to research and its participants, the introduction of photographic methods with marginalised populations carries with it important ethical concerns. This article explores the various critiques of documentary photography, and ethical concerns that arise when using visual methods, including issues of exploitation and intrusion in research with adolescents living on the streets. It also examines the ways in which researchers must continuously reassess their methodological practices in order to protect the best interests of the participants involved.     

Smoking and Membership in a Fraternity or Sorority: A Systematic Review of the Literature

Abstract

Objective: Fraternity and sorority members have higher rates of smoking than other college students. This systematic review examines studies that included fraternity/sorority membership in their investigation of smoking behaviors. Participants/Methods: Studies identified in MEDLINE, PsychInfo, JSTOR, CINAHL, ERIC, and Google Scholar published between 2003 and 2013 were included if they included fraternity and/or sorority membership, were written in English, published in a peer-reviewed journal, and had smoking as an outcome variable. Nineteen studies were identified for the review. Results: Fraternity/sorority members were more likely to be nondaily smokers. Members who lived in the fraternity/sorority house had higher rates of smoking than members who lived elsewhere. Fraternity/sorority member smoking was associated with alcohol and other substance use. The influence of no-smoking policies on fraternity/sorority member smoking was also examined. Conclusions: Fraternity/sorority membership was associated with higher rates of smoking, but this association was influenced by other substance use and environmental factors.     

Indirect effects of the Family Check‐Up on youth extracurricular involvement at school‐age through improvements in maternal positive behavior support in early childhood

Extracurricular involvement in the school‐age years has widespread potential benefits for children's subsequent socioemotional development, especially for low‐income youth. However, there is a dearth of research on interventions aimed at increasing school‐age extracurricular involvement in low‐income youth. Thus, the present study aimed to test the collateral effect of a brief, family‐focused intervention for low‐income families, the Family Check‐Up, on children's school‐age extracurricular involvement via improvements in maternal positive behavior support (PBS) in early childhood. The sample (n = 630, 50% female, 50% White, 28% Black/African American) represented a subsample of families from the Early Steps Multisite Study. At the age of two, families were randomly assigned to the Family Check‐Up or Women, Infants, and Children Nutritional Supplement Services as usual. Mother‐child dyads participated in observed interaction tasks at child ages 2 and 3 that were subsequently coded to assess PBS. Primary caregivers reported on children's school‐age extracurricular involvement at ages 7.5, 8.5, and 9.5. Results indicated that although there was not a direct path between intervention status and children's school‐age extracurricular involvement, a significant indirect path emerged from intervention group to changes in PBS between ages 2 to 3 to children's school‐age extracurricular involvement. The results are discussed in terms of implications for designing preventive interventions in early childhood that promote extracurricular involvement at school‐age, particularly for children at risk for maladaptive outcomes.