Book reviews

Qualitative Sociology -     

Examining the Impact of Changes in Maternal Employment on High School Completion Among Low-Income Youth

The passage of the Personal Responsibility and Work Opportunity Reconciliation Act and decisions about its re-authorization have resurrected interest in the impact of maternal employment on child outcomes in poor families. The emerging evidence suggests that employment stability among former welfare recipients is a key factor in making successful transitions from welfare to work. This investigation explores how changes in maternal employment in poor families relate to high school completion among at risk youths. Our findings show that a substantial number of mothers experience unstable employment patterns. This instability is positively correlated with dropout among adolescents. The paper concludes with policy implications for the next phase of welfare reform.     

Infant Contingency/Extinction Performance After Observing Partial Reinforcement

Social information gathering by infants 6 and 12 months old was examined as a foundation for later social learning that may be uniquely human. Infant performance on a contingency/extinction task was studied following a caregiver demonstration of the contingency on varied reinforcement schedules. Infants who observed caregivers receive any reinforcing stimulation in pretraining decreased responding over their own acquisition period, possibly because they began to habituate to the reinforcer. In extinction, infants who observed caregivers receive partial reinforcement in pretraining were more persistent in responding than others. This suggested that direct experience with partial reinforcement is not needed for greater persistence in extinction. These studies revealed details of social learning in the 1st year.     

Reports of Conferences, Institutes, and Seminars: Crossroads to the Future

Reports cover the 2006 Ohio Valley Group of Technical Services Librarians Conference and the 2006 North American Serials Interest Group Conference.     

Mortality trends in Philadelphia: Age- and cause-specific death rates 1870–1930

This article examines the decline in mortality which occurred in Philadelphia in the late nineteenth and early twentieth centuries. Age- and cause-specific mortality rates accounting for the decline are isolated and the relative importance of several variables in explaining the reduction of overall mortality levels is assessed. By using small areas within the city we are able to establish the impact of particular innovations on specific causes of death.     

原子簇的合成方法、性质表征与结构

利用给电子有机和无机配位体的交换反应和金属卤化物与羰基金属阴离子的复分解反应,合成异核原子簇具有反应条件温和易于控制,收率较高的特点。本文描述Fe_3(CO)_9(C_2H_2)_3等11个原子簇的合成方法,配位状态与簇核的结构。     

The role of social work in the ICU: reducing family distress and facilitating end-of-life decision-making

The costs associated with Intensive Care Units (ICUs) are high and at times invasive ICU care may not be beneficial, particularly for those patients admitted to ICUs who have little hope of recovery. The process of clarifying medical goals for these patients is often facilitated by addressing psychosocial factors. Social workers in the ICU are uniquely qualified to assess and address many of the complex psychosocial circumstances and can clarify potential misperceptions, enhancing communication among patients (if capacitated), their families, and the medical team members. This can not only help improve quality of life for very sick and dying patients in the ICU and their families, but may also reduce the likelihood of decision-making conflicts from arising. Further studies need to be done to investigate the effectiveness of social work interventions in reducing family distress, avoiding care that is unwanted by patients, and demonstrating cost-saving benefits.     

The 3 F 2 with Complex Parameters as Generating Function of Discrete Distribution

A new discrete family of probability distributions that are generated by the ₃ F ₂ function with complex parameters is presented. Some of the properties of this new family are studied as well as methods of estimation for its parameters. It affords considerable flexibility of shape which turns the distribution into an appropriate candidate for modeling data that cannot be adequately fitted by classical families with fewer parameters. Finally, three examples in the fields of Agriculture and Education are included in order to show the versatility and utility of this distribution.     

A Survey of the Teaching of Statistics in M.B.A. Programs

A survey of business schools was conducted to obtain information about the current state of the teaching of business statistics to students enrolled in M.B.A. degree programs. The survey was undertaken for and presented at a June 1986 conference on “Making Statistics More Effective in Schools of Business,” held at the University of Chicago's Graduate School of Business. Information was elicited concerning both the required statistics sequence and elective statistics courses for M.B.A. students, as well as computer usage in these courses. This article summarizes the information obtained from the survey.