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101.
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A great obstacle for wider use of structural equation modeling (SEM) has been the difficulty in handling categorical variables. Two data sets with known structure between 2 related binary outcomes and 4 independent binary variables were generated. Four SEM strategies and resulting apparent validity were tested: robust maximum likelihood (ML), tetrachoric correlation matrix input followed by SEM ML analysis, SEM ML estimation for the sum of squares and cross-products (SSCP) matrix input obtained by the log-linear model that treated all variables as dependent, and asymptotic distribution-free (ADF) SEM estimation. SEM based on the SSCP matrix obtained by the log-linear model and SEM using robust ML estimation correctly identified the structural relation between the variables. SEM using ADF added an extra parameter. SEM based on tetrachoric correlation input did not specify the data generating process correctly. Apparent validity was similar for all models presented. Data transformation used in log-linear modeling can serve as an input for SEM.  相似文献   
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The $17.2 million Rural Community College Initiative (RCCI) demonstration grant program funded by the Ford Foundation which ran from 1994 to 2001 represents the largest philanthropic project specifically aimed at rural community colleges in United States history. While a good deal of literature has been published about this initiative, much was specifically commissioned by the foundation and can be seen as coming from a public relations perspective. This paper provides a historical perspective from an independent point of view. Its purpose is to create a documentary record for future community college leaders and potential funders interested in reaching the nation's 553 rural community colleges.  相似文献   
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Multivariate meta-analysis has become increasingly popular in the educational, social, and medical sciences. It is because the outcome measures in a meta-analysis can involve more than one effect size. This article proposes 2 mathematically equivalent models to implement multivariate meta-analysis in structural equation modeling (SEM). Specifically, this article shows how multivariate fixed-, random- and mixed-effects meta-analyses can be formulated as structural equation models. metaSEM (a free R package based on OpenMx) and Mplus are used to implement the proposed procedures. A real data set is used to illustrate the procedures. Formulating multivariate meta-analysis as structural equation models provides many new research opportunities for methodological development in both meta-analysis and SEM. Issues related to and extensions on the SEM-based meta-analysis are discussed.  相似文献   
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We know that homelessness creates conditions of risk for homeless children and youth (e.g., malnutrition, missing parental support, affiliation with deviant peers, disconnect from schooling, and so forth). Researchers also document that these states of risk have devastating physical, emotional, social, and educational impacts on young people. In this article, we explore the final issue—how displacement affects the educational well-being of homeless children and youth. We begin our review with a variable—mobility—that has a good deal of explanatory power for the educational impacts examined. We conclude with the consequences of homelessness that follow displaced children and youth into adulthood. In between we discuss an assortment of outcome factors: placement in special education, attendance, academic success, and graduation.  相似文献   
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There is an increasing need for education professionals to keep abreast of new research and developments in their fields. The peer support group, which is characterized by the sharing of expertise and knowledge, the provision of mutual support, and joint problem solving among professional colleagues, has been advanced as promising means of promoting professional growth and development. This article reports the results of an exploratory national survey of school psychologists' involvement in peer support groups (PSGs) that was undertaken to identify the potential contributions of such activities to improving professional practice. Nearly 64% of the respondents indicated involvement in a PSG at some point in their careers, with almost 50% currently participating in one. Several benefits were attributed to group membership, and it was suggested that further research efforts are needed to clarify the essential components that contribute to group effectiveness.  相似文献   
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This essay attempts to disclose a uniquely volatile nexus that implicates – and perhaps, reinvigorates – a postcolonial analytics of insurgency. This nexus includes three strands of inquiry: the first is the so-called Revolution in Military Affairs (RMA), which really is – albeit in a qualified sense – revolutionary. War is doing new things with time and space through culture, media, and data technology, and in the process is mutating not only what it means to be a part of this or that national group but is also changing what it means to be human. The second strand of inquiry focuses on the legacy of postcolonial studies, particularly the notion of ‘writing back’ which, I contend, is an apposite starting point for writing critically about the RMA. Apposite though it is, there are limits to postcolonial studies in the contemporary war context. This is so because while the divisions of individual difference are shifting, the coherence of the nation state itself is undergoing radical change. Moving outward in scope to a planetary scale, the human being per se is no longer a primary category by and for which war is happening today. Thus the third strand of inquiry is focused on the residual anthropomorphic tendencies within postcolonial studies that too narrowly limit discussions of violence and collective belonging. The concept of the human being per se remains reliant on early models of technology and media (namely, writing and literature, usually novels). Therefore, in the context of an ever-expanding global war machine, ‘writing back’ is a concept that requires fine-tuning and revision.  相似文献   
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Abstract

The rise of modern sport in the mid-nineteenth century coincided with the emergence of photography as a new image-making medium. Thus, both practices developed in parallel. Notably, many early photographers turned to sport as a subject for their work, despite the early technological limitations of the medium. Histories of photography have, however, tended to overlook this. Similarly, sport historians have tended to regard these early photographs simply as illustrative material rather than important innovations in the formation of new visual conventions for the representation of sport. This paper seeks to redress this by exploring, in close detail, examples of sports photography produced in the mid- to late-nineteenth century. More importantly, it examines the visual vocabularies deployed by these early photographers within the context of contemporary art practices, demonstrating how artistry and artifice were deployed in the production of some of the earliest, and finest, examples of sports photography ever produced.  相似文献   
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