Breaking the cycle of intergenerational abuse: the long-term impact of a residential care program

OBJECTIVE: The number of youth in residential care programs who have been abused is high. The relationship between childhood abuse victimization and adult intimate partner violence (IPV) is well documented. This study compared the rates of IPV 16 years after individuals had participated in a long-term residential care program with individuals accepted to the program who did not participate. The IPV rates for these two groups were also compared to national normative data. METHOD: Information on adult functional outcomes was obtained from former residential care and comparison youth via a confidential survey that was administered either by telephone or by mail. Analysis was limited to respondents who were currently married or involved in a marriage-like relationship (n=131; 92% male). RESULTS: The IPV rates for the sample were 9.3% for those who stayed in the residential program less than 18 months and 6.5% for those who stayed more than 18 months, neither of which were significantly different from the national norm of 8.4%. The IPV rate for the comparison group was 26.1%, which was significantly higher than the national norm. Regardless of length of program stay, respondents who were maltreated in childhood had a 14.5% IPV rate, which was significantly lower than the estimated 36-42% rate projected for individuals with similar backgrounds. CONCLUSION: We conclude that time spent in a treatment-oriented residential care program was associated with lower adult IPV rates. Specifically, the skills taught in a long-term, treatment-based residential program (e.g., healthy interpersonal relationships, self-government) may have a long-term beneficial impact for adolescents at high risk of adult IPV.     

Peer Problems and Hyperactivity–Impulsivity Among Norwegian and American Children: The Role of 5‐HTTLPR

Peer problems are linked to attention deficit hyperactivity disorder (ADHD) symptoms and the serotonin system is thought to be involved in ADHD‐related behavior. Hence, from a Gene × Environment perspective, the serotonin transporter 5‐HTTLPR may play a moderating role. In two large community samples, the moderating role of 5‐HTTLPR was examined related to more hyperactivity–impulsivity symptoms (HI symptoms) predicted by more peer problems. In Study 1, involving 642 Norwegian children, results indicated that for s‐allele carriers only, caregiver‐reported peer problems at age 4 predicted more parent‐reported HI symptoms at age 6. In Study 2, similar results emerged involving 482 American children. Discussion focuses on differential sensitivity to the adverse effects of poor peer relations.     

GENI体系结构的中间件GMC建立开放真实的试验环境

2006年11月1日，GENI的网站上发布了GENI体系结构中间件的阐述文章，该文从GENI体系结构的管理核心——GMC（GENI Management Core）出发。描述GENI系统的体系结构。作者指出，该文并不描述一个特殊的关于链路、节点、子网等的部署，其定义的框架只是简单地统筹了这些组件在逻辑上怎样组成一个紧密联系的设施。GMC的目的是为建立一个开放的、大规模的，真实的试验设施框架。这个试验设施将允许研究人员用试验来回答复杂网络系统的问题，评估另一个体系结构以及评价工程开销。[编者按]     

Revisiting Schramm's Radiotown: Media Displacement and Saturation

In 1959 Wilbur Schramm collected data on the media use behavior of children in what he believed was the last remaining town in North America to have radio as its only electronic mass media, and he concluded the primary impact of new media was the displacement of incumbent media. This research returns to Schramm's “Radiotown” for two follow-up studies to assess the validity of displacement as a mechanism for understanding long-term changes in media use. The first study is a qualitative data collection among a convenience sample (n = 28) of the now-adult participants of the 1959 study. The second study quantitatively tests the conclusions of the first study among the youth of Radiotown (n = 263). Among both adults and youth, radio remains a primary mass media device, with adults using more radio now than in 1959. Three principles of media use are proposed: the ubiquity of mass media devices in the household, the proximity of media devices, and the constancy of media use. Implications for the displacement hypothesis are discussed.     

Interpreting change in educational equity

The effect of changes in state revenue, property wealth, and enrollment from 1969–1970 to 1976–1977 on the equality of total educational revenue was investigated for nineteen states with available data. An exploratory two-stage methodology allowed a simulation of the effects of holding each of these factors at their 1969–1970 values and comparing the result with 1976–1977 predicted values. It was found that changes in state revenue were most equalizing, while changes in property wealth and enrollment were disequalizing. In addition, it was found that the change in the behavioral relationship between state revenue, property wealth, and enrollment, and local revenues from 1969–1970 to 1976–1977 was equalizing in twelve of the states and was larger than the change in the value of the most important of these factors (state revenue) in seven of the states.     

Mining information across multiple domains: A case study of application to patent laws and regulations in biotechnology

In this paper, we present a framework that can process a user query for retrieval of information from documents of different properties across multiple domains, with specific application to patent laws and regulations. The framework has three basic components. The first component is ontology mapping and generation. What happens is that the keywords entered by users are mapped into a subset of relevant keywords. This step is performed by looking up those words in an ontology database. The second component is the joint and cross search in various document domains; in our case, they are patents and scientific publications. The last component is to modify the search results by applying user feedback statistics. The results of feedback will be saved as metadata for future uses.A case example is given to demonstrate how results from multiple domain searches can be combined using ontology and cross referencing. We use an example of well-known biotechnology patents on erythropoietin (EPO) and give detailed analysis on each document domain with this keyword. Relationships between each domain are demonstrated.A user feedback mechanism is also discussed in this paper. The ability to take user feedback into the framework is important. There is no doubt that domain knowledge from expert or experienced users could be a very good compliment to the proposed system. Both direct and indirect user feedbacks are discussed.     

Investigating the effectiveness of computer simulations for chemistry learning

Are well‐designed computer simulations an effective tool to support student understanding of complex concepts in chemistry when integrated into high school science classrooms? We investigated scaling up the use of a sequence of simulations of kinetic molecular theory and associated topics of diffusion, gas laws, and phase change, which we designed and experimentally tested. In the two effectiveness studies reported, one in a rural and the other in an urban context, chemistry teachers implemented two alternate versions of a curricular unit—an experimental version, incorporating simulations, and a control version, using text‐based materials covering the same content. Participants were 718 high school students (357 rural and 361 urban), in a total of 25 classrooms. The implementation of the simulations was explored using criteria associated with fidelity of implementation (FOI). Each context provided insights into the role of FOI in affecting the effectiveness of the interventions when working with groups of teachers. Results supported the effectiveness of this sequence of simulations as a teaching tool in a classroom context, and confirmed the importance of FOI factors such as adherence and exposure in determining the specific environments in which these materials were most effective. © 2012 Wiley Periodicals, Inc. J Res Sci Teach 49: 394–419, 2012