Power Analysis for Complex Mediational Designs Using Monte Carlo Methods     

Felix Thoemmes  David P. MacKinnon  Mark R. Reiser 《Structural equation modeling》2013,20(3):510-534

Applied researchers often include mediation effects in applications of advanced methods such as latent variable models and linear growth curve models. Guidance on how to estimate statistical power to detect mediation for these models has not yet been addressed in the literature. We describe a general framework for power analyses for complex mediational models. The approach is based on the well-known technique of generating a large number of samples in a Monte Carlo study, and estimating power as the percentage of cases in which an estimate of interest is significantly different from zero. Examples of power calculation for commonly used mediational models are provided. Power analyses for the single mediator, multiple mediators, 3-path mediation, mediation with latent variables, moderated mediation, and mediation in longitudinal designs are described. Annotated sample syntax for Mplus is appended and tabled values of required sample sizes are shown for some models.  相似文献   

Multiple software review: Drawing path diagrams     

Jeremy N. V. Miles  Mark E. Shevlin 《Structural equation modeling》2013,20(1):95-103

Amos Draw v3.51. SmallWaters Inc., 1507 East 53rd Street, Suite 452, Chicago, IL. MS® Windows® 3.x, 95, NT.

Chartist v1.7. NovaGraph, Inc., P. O. Box 80115, Richardson, TX. MS® Windows® 3.x, 95, NT.

Microsoft PowerPoint v7. Microsoft Corp., One Microsoft Way, Redmond, WA 98052–6399. MS® Windows® 3.x, 95, NT.

EQS v5.3. Multivariate Software, Inc., 4924 Balboa Boulevard, #368, Encino, CA. Windows® 3.x, 95, NT; Mac® OS 7.0 (and above).

MS Paint. (Packaged with Windows® 3.x, 95).

Visio v1.0. Visio Corp., 520 Pike Street, Suite 1800, Seattle, WA 98101. MS® Windows® 3.x, 95, NT.  相似文献   

Articulation and Transfer for Career and Technical Students: Best Practices for Dealing with Real and Perceived Barriers to Baccalaureate Degree Attainment for Applied Science Students     

Mark Fincher  Chris Kelly  Miranda Harrison  Zachary Harrison  Danielle Hopson  Selah Weems 《Community College Journal of Research & Practice》2013,37(8):531-535

ABSTRACT

Community colleges produce large numbers of high quality graduates from career and technical programs. These programs are often of high academic rigor and quality. However, most universities view these Applied Associates of Science (AAS) as being terminal associate's degrees that are not appropriate for transfer. Regional accrediting standards are often cited as the reason for this differentiation. The reality is that institutional policies often simply dismiss AAS courses by their prefix to simplify the process. This study and presentation will explore the reality of what is allowed by accrediting bodies in transferring AAS courses and best practices for facilitating the maximum allowable course transfer.  相似文献   

Articulation Visibility at Two-Year Colleges     

Mark Fincher  Lance Sharp  James Burks  Kelly Lyon  Mitchell Parker  Justin Ward 《Community College Journal of Research & Practice》2013,37(7):684-692

Articulation between two-year colleges and universities provides a critical opportunity for potential students. Most institutions declare their support of articulation; however, the visibility of this support to potential students is inconsistent at best. Articulation agreements that are visible and easily understood by potential students serve as a motivation to the pursuit of higher education. Conversely, the lack of a complete, visible path to a baccalaureate degree is a powerful deterrent to enrollment. For this study, articulation is a coordinated effort and process to support efficient transfer between institutions of higher education. (DeMott, 1999 DeMott , J. ( 1999 ). Seven steps to articulation success . High School Magazine , 6 , 22 – 24 . [Google Scholar]). The purpose of this study is to explore the general visibility of existing articulation opportunities at two-year colleges. The visibility of articulation agreements is a critical practical factor in their potential positive impact on student behavior and success.  相似文献   

Implementing Racial Change in Schools     

Mark A. Chester 《Review of Education, Pedagogy & Cultural Studies》2013,35(3):161-165

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Writing Assessment in the 21st Century: Essays in Honor of Edward M. White,N. Elliot,L. Perelman (Eds.), Hampton Press,New York (2012), 530 pp., ISBN 13: 978-1-61289-087-6     

Mark Chapman 《Assessing Writing》2013,18(2):182-185

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Response to "evolution, revolution, or obsolescence: an examination of writings on the future of health sciences libraries"     

M Coletti  M Goldstein 《Journal of the Medical Library Association : JMLA》2012,100(3):156

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New information‐communication technologies in scientific communication: Implications for third‐world users     

Mark S. Schlager  Judith Fusco 《The Information Society》2013,29(3):203-220

Over the past decade, education reform and teacher training projects have spent a great deal of effort to create and support sustainable, scalable online communities of education professionals. For the most part, those communities have been created in isolation from the existing local professional communities within which the teachers practice. We argue that focusing on online technology solely as a mechanism to deliver training and/or create online networks places the cart before the horse by ignoring the Internet's even greater potential to help support and strengthen local communities of practice within which teachers work. In this article we seek guideposts to help education technologists understand the nature of local K-12 education communities of practice--specifically their reciprocal relationship with teacher professional development and instructional improvement interventions--as a prerequisite to designing online sociotechnical infrastructure that supports the professional growth of education professionals.  相似文献   

Technology and Copyright in 1735: The Engraver's Act     

Mark Rose 《The Information Society》2013,29(1):63-66

Without printing technology there would be no need for copyright. Anglo-American copyright has its roots in early booksellers' practices that in 1710 were incorporated into the Statute of Anne. Several decades later in 1735 the provisions of this statute were copied in a new piece of legislation for the protection of engravings. However, “Hogarth's Act” protected only those engravings that involved original designs and thus, implicitly, made a distinction between artists and mere craftsmen. Soon, however, Parliament was persuaded to extend protection to all engravings. The history of Hogarth's Act foreshadowed the logic whereby a century later protection was extended first to special and then to ordinary photographs. Together these instances of copyright extension raise the question of to what degree similar patterns are at work in the continuing expansion of copyright today.  相似文献   

Participation,Remediation, Bricolage: Considering Principal Components of a Digital Culture     

Mark Deuze 《The Information Society》2013,29(2):63-75

Within media theory the worldwide shift from a 19th-century print culture via a 20th-century electronic culture to a 21st-century digital culture is well documented. In this essay the emergence of a digital culture as amplified and accelerated by the popularity of networked computers, multiple-user software, and Internet is investigated in terms of its principal components. A digital culture as an underdetermined praxis is conceptualized as consisting of participation, remediation, and bricolage. Using the literature on presumably “typical” Internet phenomena such as the worldwide proliferation of independent media centers (indymedia) linked with (radical) online journalism practices and the popularity of (individual and group) weblogging, the various meanings and implications of this particular understanding of digital culture are explored. In the context of this essay, digital culture can be seen as an emerging set of values, practices, and expectations regarding the way people (should) act and interact within the contemporary network society. This digital culture has emergent properties with roots in both online and offline phenomena, with links to trends and developments predating the World Wide Web, yet having an immediate impact and particularly changing the ways in which we use and give meaning to living in an increasingly interconnected, always on(line) environment.  相似文献