解决分布式需求的内在冲突

2006年8月,GEN(I网络创新的全球化环境)项目组公布其项目的设计原则。来自普林斯顿大学、麻省理工大学、华盛顿大学等学校的十二位专家编写了这份报告。该报告阐述了GENI的研究范围、用户的需求、需求的内在压力,以及工程设计的原则。报告指出了GENI的价值主张,广泛的部署、多样化可扩展的网络技术集合、对真实用户流量的支持仍是GENI关注的原则和方向。上期已经介绍第一部分——“分布式需求定义GENI的重心”,本期刊出第二部分——“解决分布式需求的内在冲突”。     

音乐改善鸡情绪

Clues to how some music can send chills down yourspine are being sought in the moods of chickens. Austrian and U.S.researchers have found that inyoung domestic chicks,the effects of music can be seenin behavioral changes.The experiment reveals:not so muchchicks’musical appreciadon,but hints(暗示,提示)at how the“language of emotions”might have evolved hand-in-handwith emotions.     

The ADHD spectrum and everyday life: experience sampling of adolescent moods, activities, smoking, and drinking

Using an experience sampling methodology, the everyday lives of 153 adolescents with low, middle, or high levels of attention-deficit/hyperactivity disorder (ADHD) characteristics as assessed by either parent or teen were examined. Twice each hour, across two 4-day recording intervals, participants in a longitudinal study of stress and health risks logged their behaviors, moods, and social contexts. Those with high, in contrast to low, ADHD symptom levels recorded more negative and fewer positive moods, lower alertness, more entertaining activities relative to achievement-oriented pursuits, more time with friends and less time with family, and more tobacco and alcohol use. Fewer associations emerged with parent-defined than with teen-defined subgroups, although the differences in alertness, peer and family contexts, entertainment versus achievement activities, and substance use were consistent across sources. Even at subclinical levels, ADHD characteristics were associated with behavioral patterns and contexts that may promote peer deviancy training, unhealthy lifestyle behaviors, and vulnerability to nicotine dependence.     

Multiple mentor model: A conceptual framework

Conclusion This article focused on developing a conceptual framework for the mentoring process. The model is based on the premise that mentoring is not a single event in the life of a worker but rather several events with different levels of mentoring. Each level of mentoring requires a different type of mentor with different types of skills and knowledge, similar to Len Nadler's HRD training model. Therefore, people may need special training to assume the different mentor levels (i.e., Training, Education, and Development Mentors), and workers may need to be trained to recognize that such experiences and people exist to help in their career progression. Counselors can be in the forefront as far as accepting and advocating the use of the Multiple Mentor Model for this training     

Research Agendas and Computer Technology Visions: The Need for Closely Watched Classrooms

There are numerous research methodologies that may be applied to the study of computer technology, and each has the potential to provide insights into its usefulness. The selection of research methodologies should be driven by the nature of the questions under investigation rather than a predetermined idea that some research methods are superior to others. This article focuses on a particular methodology, case studies, and it describes their potential for making a unique contribution to our understanding of computer technology. The special value of case studies lies in helping us understand the complexities found in classrooms, where the multiple variables that influence computer use interact in complex ways. © 1999 IFIP, published by Kluwer Academic Publishers     

Functional school refusal subtypes: Anxiety,avoidance, and malingering

Chronic school refusal has traditionally been classified under broad categories such as school phobia and truancy. However, the need for improved recognition and treatment of school refusal has heightened efforts to identify subtypes of school refusal behavior. Recent efforts have focused on functional subtypes of school refusal. This article purposes to extend recent efforts by showing that the three basic subtypes of anxiety, avoidance, and malingering are not only functional, but consistent with refusal characteristics, empirical evidence from factor analysis and clinical diagnosis over the past decade, and treatment approaches. Such extension is intended to aid practitioners in further understanding and using functional subtypes. © 2000 John Wiley & Sons, Inc.     

Index of science reading awareness: An interactive-constructive model,test verification,and grades 4–8 results

The purpose of this study was to develop and verify the Index of Science Reading Awareness (ISRA) based on a model of an efficient, successful interactive-constructive science reader and three independent metacognitive awareness domains. Several researchers have noted the need for efficient, reliable, and valid measures of metacognition. ISRA data collected on 532 students (Grades 4–8) were analyzed using factor analyses, linear structural modeling, and analyses of variance (ANOVAs) to help verify the model and the test. The factor analyses and linear structural modeling indicated that these data did not support the assumption about the three independent metacognitive awareness domains, but suggested that the model and the test were structured around the design features of science reading, science text, and science reading strategies. One-way ANOVAs indicated significant, predicted reading ability and gender differences but unexpected grade-level differences. The composite metacognitive awareness data indicated that most Grade 4–8 students have surface knowledge about science reading, science text, and science reading strategies, and indicated specific targets for explicit science reading instruction. © 1998 John Wiley & Sons, Inc. J Res Sci Teach 35: 27-51, 1998.     

Maltreatment following reunification: Predictors of subsequent Child Protective Services contact after children return home

ObjectivesThis study examined risk of maltreatment among children exiting foster care using a statewide sample of children reunified between 2001 and 2004 in Rhode Island. The objectives were: (1) to compare rates of maltreatment following parental reunification for youth in care as a result of maltreatment with those in care for other reasons; and (2) to assess the effects of child, family, and case characteristics on rates of re-maltreatment among children placed in foster care due to maltreatment.MethodA longitudinal dataset of all reunified cases was matched with state records of substantiated Child Protective Service (CPS) investigations. Two Cox proportional hazards models were tested. The first model compared rates of subsequent maltreatment for two groups: children in foster care as a result of maltreatment, and those in care for other reasons. The second model investigated the effects of child, family, and case characteristics on re-maltreatment rates for those in care as a result of maltreatment.ResultsChildren in foster care due to maltreatment were significantly more likely to be maltreated following reunification. Among children in foster care due to maltreatment, factors that raised risk for re-maltreatment included a previous foster care placement, exiting care from a non-relative foster home, and removal due to neglect. Older adolescents had lower rates of re-maltreatment than infants. Child neglect was the primary type of recurrent maltreatment that occurred following reunification.ConclusionsSupports are needed for families about to be reunified, particularly when the removal was prompted by incidents of abuse or neglect. Incidents of neglect are particularly likely and appropriate services should specifically target factors contributing to neglect. Cases involving youth with a history of repeated foster care placement or in which non-relative placements are utilized may need additional supports.Practice implicationsThis study suggests that services should be developed to minimize the risk for recurrent maltreatment following reunification. Services would be most useful for high-risk cases prior to reunification and during the first year following reunification. Understanding the risks associated with maltreatment will help guide development of appropriate interventions.     

Moving PISA Results into the Policy Arena: Perspectives on Knowledge Transfer for Future Considerations and Preparations

Evidence-based policies, decisions, and practices are highly valued and underachieved in the international mathematics and science education reforms. Many in the mathematics and science education research communities lament the lack of influence that research results have on the education profession, schools, and teaching. Academic research done in isolation of end-users—with the faint hope that teachers, politicians, and bureaucrats will access and utilise these results to inform curriculum, assessment, and instruction and to influence public policy—has not worked. Some funding agencies require dissemination of research and development results to the broader political and education communities; therefore, applicants agree to these requirements without fully realizing the breadth of these demands. However, to achieve such knowledge transfer requirements, researchers need to become more (a) aware of the needs, players, and processes of ‘speaking truth to power’; (b) active in knowledge transfer and influencing public policy; and (c) alert to values and normative premises of the policy makers. This article outlines the essential principles, barriers within the academic community, international efforts, and future considerations for knowledge transfer regarding international assessments. Specific articles on PISA 2000, 2003, and 2006 included in this special issue are used to illustrate these insights into verification of curricular influences, educational opportunity and equality, regional comparisons, and direct influence on policy.