逻辑叙事:历史的比较和学科的比拟--兼评马佩老师的逻辑观

中国西方逻辑的研究有两次引入,二次断层,西方逻辑的发展则有三次高峰,一次断层.逻辑的社会文化功能主要在其批判性,而不是对逻辑的普遍诉求.逻辑的发展是一个学科依赖的过程,分别依赖于语言、数学、自然哲学和法学,法学有可能成为逻辑学发展的新模式.辩证逻辑是哲学逻辑的一个分支,保持自由的心灵是发现和发明的条件.     

The simultaneous confidence intervals for all distances from the extreme populations for two-parameter exponential populations based on the multiply type II censored samples

Among k independent two-parameter exponential distributions which have the common scale parameter, the lower extreme population (LEP) is the one with the smallest location parameter and the upper extreme population (UEP) is the one with the largest location parameter. Given a multiply type II censored sample from each of these k independent two-parameter exponential distributions, 14 estimators for the unknown location parameters and the common unknown scale parameter are considered. Fourteen simultaneous confidence intervals (SCIs) for all distances from the extreme populations (UEP and LEP) and from the UEP from these k independent exponential distributions under the multiply type II censoring are proposed. The critical values are obtained by the Monte Carlo method. The optimal SCIs among 14 methods are identified based on the criteria of minimum confidence length for various censoring schemes. The subset selection procedures of extreme populations are also proposed and two numerical examples are given for illustration.     

Challenges in recruiting parents to participate in child welfare research: implications for study design and research practice

Although research with hard‐to‐reach populations is necessary to deepen the social work knowledge base and improve services to these groups, recruiting members of hard‐to‐reach populations for research projects is often a challenging process. Frequently, non‐probability sampling is used to obtain participants. However, the difficulties and limitations associated with this process in quantitative research are rarely discussed in depth in the literature. Sampling issues can significantly impact a research project, delaying it, extending it or even causing the premature termination of a project. Challenges to recruitment can limit the type of research that is completed, impact the knowledge base or introduce threats to validity through sampling bias. Using a preliminary quantitative study on parental engagement with child protective services as an illustration for the discussion, the challenges of non‐probability sampling with a hard‐to‐reach population and the implications for research practice are explored and discussed. Implications for future research practice are considered.     

Reporting Rape in a National Sample of College Women

Abstract

Background: Studies indicate that a small percentage of rapes are reported to law enforcement officials. Research also suggests that rapes perpetrated by a stranger are more likely to be reported and that rapes involving drugs and/or alcohol are less likely to be reported. College women represent a unique and understudied population with regard to reporting rape. Methods: In the current study, the authors interviewed a national sample of 2,000 college women about rape experiences in 2006. Results: Only 11.5% of college women in the sample reported their most recent/only rape experience to authorities, with only 2.7% of rapes involving drugs and/or alcohol reported. Minority status (ie, nonwhite race) was associated with lower likelihood of reporting, whereas sustaining injuries during the rape was associated with increased likelihood of reporting. Discussion: Reporting, particularly for rapes involving drugs and alcohol, is low among college women. Implications for policy are discussed.     

Elder Abuse and Neglect in African American Families: Informing Practice Based on Ecological and Cultural Frameworks

Despite the rapid growth of the elderly African American population in the U.S., elder abuse and neglect in African American families continue to be underdeveloped areas of study. This article presents an ecological and culturally informed framework for the study of elder abuse in African American populations. The model was developed based on Bronfenbrenner's Human Ecological Theory. The model identifies risk factors associated with different systems that have an influence on the lives of African American families. Cultural protective factors also are identified in the model. The model is intended to provide an understanding of elder abuse and neglect in African American families by considering the influence of contextual factors such as the legacy of slavery, social exclusion, and structural segregation and racism. Specific suggestions for practice are proposed according to cultural strengths of African American communities as well as the ecological premises of the model.     

Lesbian and Gay Elders and Long-Term Care: Identifying the Unique Psychosocial Perspectives and Challenges

This qualitative study of lesbian and gay elders seeks to identify the psychosocial challenges this community faces regarding long-term care. Two focus groups were conducted among 16 gay elders in community and long-term care settings. Participants reported fear of being rejected or neglected by healthcare providers, particularly personal care aides; fear of not being accepted and respected by other residents; fear of having to go back into the closet if placed in long-term care; and a preference for gay-friendly care. Participants suggested staff training to promote acceptance and respect for gay people, and favorably perceived gay-specific and gay-friendly living arrangements.     

Exploring the Nature of Same-Sex Relationships

This study explored the relationship structure and experiences of 145 people in the United States, aged 50 and above, in long-term, same-sex relationships. A survey assessed relationship satisfaction and roles, caregiving, shared assets, and relationship protection and support. The ENRICH couple scales revealed high scores in communication, conflict resolution, and couple satisfaction. Most participants had taken steps to protect shared assets and assign legal authority to their partners. Participants expressed differing views regarding marriage. This study reveals distinctions based on gender and age that will inform practice with this population.     

Dynamics of age- and size-structured populations in fluctuating environments: Applications of stochastic matrix models to natural populations

Recent developments of the theory of stochastic matrix modeling have made it possible to estimate general properties of age- and size-structured populations in fluctuating environments. However, applications of the theory to natural populations are still few. The empirical studies which have used stochastic matrix models are reviewed here to examine whether predictions made by the theory can be generally found in wild populations. The organisms studied include terrestrial grasses and herbs, a seaweed, a fish, a reptile, a deer and some marine invertebrates. In all the studies, the stochastic population growth rate (ln λ _s ) was no greater than the deterministic population growth rate determined using average vital rates, suggesting that the model based only on average vital rates may overestimate growth rates of populations in fluctuating environments. Factors affecting ln λ _s include the magnitude of variation in vital rates, probability distribution of random environments, fluctuation in different types of vital rates, covariances between vital rates, and autocorrelation between successive environments. However, comprehensive rules were hardly found through the comparisons of the empirical studies. Based on shortcomings of previous studies, I address some important subjects which should be examined in future studies.     

初中化学探究性实验教学改革初探

在教学中引导学生将教材中的验征性实验改为探究性实验,更有利于激发学生的学习兴趣,有利于提高学生分析问题和解决问题的能力,有利于培养学生实事求是、严肃认真的学习态度,有利于培养学生的创新欲望和创新能力。     

人类学视野中的边缘化穆斯林族群

目前学术界将族群理论引入到我国民族学研究中,给我国民族学、人类学研究提供了新思维、新视角,有助于我国民族学研究的深化和细化。我国边缘化穆斯林族群所表现出的文化特征、族群边界、族群关系及族群认同为这一理论在中国的发展提供了实证个案。特别是边缘化穆斯林在族群互动中所引起的宗教信仰、语言、服饰的变异,说明民族既是一个历史文化现象,又是一个历史发展过程,他不是一经确认就不再发展的事物。