The Expectation-Threshold model of reproductive decision making

It is proposed that as expectations about parenting become increasingly high, couples have an increasing tendency to decide to have a(or another) child. Similarly, as parenting expectations become increasingly low, couples have an increasing tendency to decide on sterilization. Couples without extremely high or low expectations continue to use contraceptives. Expectations are defined as Subjective Expected Utilities (SEUs) for having or not having a child. Preliminary results support the model and suggest that the threshold for making these decisions is not at neutral, but is conservative so that couples must have fairly high or low expectations before making such binding decisions are parenting or sterilization. The fact that data reveal that this exists supports the Expectancy-Threshold model, but it also requires a change in SEU Theory's maximization rule for some kinds of decisions.The authors wish to thank Carole Baker, former executive Director of the National Alliance for Optional Parenthood, and the board members of that organization for their cooperation, and Dr. Barbara Beach who helped with the data analysis. Funding was provided, in part, by The Center for Studies in Demography and Ecology, University of Washington, through a grant, No. 5 P30 HDO 9397, from the National Institute for Child Health and Human Development     

简论女丹修炼的特殊机理

女丹功法,又称"坤诀",是指妇女修炼内丹之法。女性之内丹修炼活动虽可追溯至唐代,但其学说成熟则较晚。男女两性存在着生理和心理上的差异,因此,内丹修炼在功法和步骤上也应有所区别。传统中医学原理可以帮助我们阐释女丹修炼程序及"斩赤龙"的特殊机理及其意义。女丹功法的关键步骤为"太阴炼形"之术,其关窍为膻中穴和血海;"阳神出壳"是女子丹功炼至最高层次时所出现的现象,炼功者此时要格外谨慎。     

Carbon fluxes and nitrogen availability along an urban–rural gradient in a desert landscape

Urbanization is increasing in arid and semi-arid regions of the world and impacting native ecosystems through disturbance, climatic modification, and pollution deposition. Arid ecosystems often exhibit a mosaic of shrub/tree canopy covered and non-canopy covered patches that differ in elemental pools and processes. We measured belowground ecosystem attributes and processes in native Larrea tridentata {(D.C.) Cov} dominated communities along an urban–rural gradient in Phoenix, Arizona. Organic carbon (C), total nitrogen (N), and nitrate levels were significantly greater in the urban locations, but soil respiration rates (R_s) were higher at the rural sites. Urban sites exhibited no difference in R_s and N between the canopy and interplant patches while both the rural and suburban sites had significantly greater N and higher R_s under the canopy than in the interplant spaces. Soil respiration rates at the urban locations were not correlated with either soil moisture or temperature individually. These data suggest that urbanization has caused a disconnect of ecological pattern and processes in L. tridentata ecosystems within the urban setting such that water and N limitations no longer explain expected spatial R_s patterns, or elemental pools.     

Racial Discrimination, Post Traumatic Stress, and Gambling Problems among Urban Aboriginal Adults in Canada

Little is known about risk factors for problem gambling (PG) within the rapidly growing urban Aboriginal population in North America. Racial discrimination may be an important risk factor for PG given documented associations between racism and other forms of addictive behaviour. This study examined associations between racial discrimination and problem gambling among urban Aboriginal adults, and the extent to which this link was mediated by post traumatic stress. Data were collected via in-person surveys with a community-based sample of Aboriginal adults living in a mid-sized city in western Canada (N = 381) in 2010. Results indicate more than 80 % of respondents experienced discrimination due to Aboriginal race in the past year, with the majority reporting high levels of racism in that time period. Past year racial discrimination was a risk factor for 12-month problem gambling, gambling to escape, and post traumatic stress disorder (PTSD) symptoms in bootstrapped regression models adjusted for confounders and other forms of social trauma. Elevated PTSD symptoms among those experiencing high levels of racism partially explained the association between racism and the use of gambling to escape in statistical models. These findings are the first to suggest racial discrimination may be an important social determinant of problem gambling for Aboriginal peoples. Gambling may be a coping response that some Aboriginal adults use to escape the negative emotions associated with racist experiences. Results support the development of policies to reduce racism directed at Aboriginal peoples in urban areas, and enhanced services to help Aboriginal peoples cope with racist events.     

Country Reputation in Multidimensions: Predictors,Effects, and Communication Channels

A country's reputation is a subject of increasing interest for the practice and research of public relations and public diplomacy. South Korea's reputation as viewed by Americans, the country's most strategic foreign public, is the topic of this study. It aims to (a) demonstrate a reliable, valid measurement model of country reputation in multidimensions for the research context; (b) examine effects of individual experience with and awareness of the country on country reputation; (c) assess the effects of country reputation on foreign publics' supportive intentions toward the country; and (d) explore strategic communication channels that can be effectively used for country reputation management. Key findings of this study include a valid, reliable measurement instrument of country reputation, strongly mediating effects of public awareness between individual experience and country reputation, and the encouraging effect of country reputation on nation branding.     

Impacts of agricultural to urban land-use change on floristic quality assessment indicators in Northeastern Illinois wetlands

Northeastern Illinois is under heavy urban sprawl pressure leading to changes in land-use and negative impacts on existing wetlands directly adjacent to these new developments. Determining the impact of land-use changes on wetlands is important as it can have management and preservation implications within this region. One tool to evaluate these changes is the Floristic Quality Assessment (FQA), a method based on plant species composition at a site and the individual species habitat affinity and disturbance tolerance. The objectives of this study were to: 1) determine how wetland size, impervious surface, and distance from development influence FQA indicators and 2) determine if period (before/after development) and buffer size affect FQA indicators. Fourteen wetlands located in Northeastern Illinois were surveyed during 2004 through 2006 (prior development) and revisited in 2008 (post development). Positive correlations between wetland size and FQA indicators and between impervious surface and percent native species were found. In addition, species richness increased after development occurred and wetlands with larger buffers had higher percentages of native species. This study has demonstrated that larger wetlands are more diverse and land-use changes may not decrease wetland plant diversity in the short term in an urban setting.     

Commercially arranged marriage and the negotiation of citizenship rights among Vietnamese marriage migrants in multiracial Singapore

Globalization and increased mobilities have multiplied cross-border transactions not only in the economic sphere but have also a major impact on human relationships of intimacy. This can be seen in the increased volume of differently mediated forms of international marriage, not just straddling ‘east’ and ‘west’, but within Asia and across different ethnicities and nationalities. International marriage raises a host of social issues for countries of origin and destination, including challenges relating to the citizenship status and rights of the marriage migrant. This paper examines the negotiation of citizenship rights in the case of commercially matched marriage migrants – namely Vietnamese women who marry Singaporean men and migrate to Singapore as ‘foreign brides’. While they are folded into the ‘family’ – what is often thought of as the basic building block of the nation in Asian societies – they are not necessarily accorded full incorporation into the ‘nation’ despite Singapore's claims to multiculturalism. This is particularly salient at a point when cross-nationality, cross-ethnicity marriages between Singapore citizens and non-citizens are on the increase, accounting for over a third of marriages registered in Singapore in recent years. Vietnamese women who marry Singaporeans are positioned within the nation-state's citizenship regime as dependents of Singaporean men, having to rely on the legitimacy of the marriage relationship as well as the whims of their husbands in negotiating their rights vis-à-vis the Singapore state. Drawing on interviews and ethnographic work with 20 Vietnamese women who are commercially matched marriage migrants, the paper first focuses on the vulnerable positions these women find themselves, particularly given difficulties in forging their own support networks as well as weaknesses of the civil society sector in what has been called an ‘illiberal democracy’ characterized by a political culture of ‘non-resistance’. The paper then goes on to examine the way they negotiate rights to residency/citizenship, work and children within webs of asymmetrical power relations within the family and the nation-state. We draw on our findings to show that citizenship is ‘a terrain of struggle’ within a multicultural nation-state shaped by social ideologies of gender, race and class and negotiated on an everyday basis within spheres of family intimacy.     

Practice Learning and the Development of Students as Critical Practitioners—Some Findings from Research

This article reports some findings from an ESRC‐funded research project which has been examining the development of criticality in undergraduate students, taking social work and modern languages as contrasting disciplines. This twin‐track study aims to develop the conceptualisation of ‘criticality’ in the context of empirical research. This article examines the development of criticality in final year social work students, where the practice learning experience is predominant. The analysis is framed by the project's developing theoretical conceptualisation of criticality.