Internal,External, and Government Political Efficacy: Effects on News Use,Discussion, and Political Participation

News use and political discussion are often studied as important factors in understanding the effects of political efficacy on participation. However, measurements of external efficacy often blur distinctions between personal ability and government responsiveness. This study establishes a measure for perceptions of competence in the institutions of democratic government—government efficacy (GE). Drawing on panel survey data from the United States, confirmatory factor analysis introduces GE as a unique construct. Political efficacy dimensions are tested for their impact on news consumption, discussion, and political participation. Results add to the extant literature revolving the role of political efficacy on news use, discussion, and participation.     

Bookbinding Information on the Web: Breaking the Circle,from Pixels to Linked Open Data

The “Digital Heritage: Spotlight on Europe” column examines technological advances internal and external to cultural institutions. The digital shift changed radically how cultural heritage is made, disseminated, distributed, accessed, consumed, and monetized. One of the most important revolutions is that the user's role changed dramatically, shifting from passive observers to active participants and content producers with many new and exciting opportunities for engagement, creative use, and access. The strength of the column is its broad, international focus, and contributors are encouraged to explore issues and recent advances in digital heritage theories, methodologies, standards relevant to the European region, as well as the larger, global audience. Interested authors are invited to submit proposals and articles to the column editor at annamaria.tammaro@unipr.it. Please include “ILLR submission” in the subject line of the e-mail.     

Grass roots: Using satellite technology for educational program delivery: The Iowa experience

Abstract

Flexibility in location, scheduling, and delivery of courses and programs through distance education can provide disabled students with what may be their first real access to higher education. Distance educators must stay abreast of developments (particularly technological developments) that will improve future services; in this way, they can take a proactive stance in providing and delivering courses, instruction, and testing in accessible formats. This article states a philosophy for serving disabled learners and describes practical applications of that philosophy for distance education programs based on the experiences of the Independent Study program at the University of Wisconsin‐Extension. Issues addressed include information dissemination, planning, instruction, testing, and faculty training and support.     

The effectiveness and retention of teachers with prior career experience

As schools and districts seek to recruit teachers, individuals in non-teaching professions are an appealing possible pool. These potential teachers come with work experience and may have expertise that would serve them well in the classroom. While there has been substantial rhetoric assailing the virtues of teachers with prior professional experience, no research that we know of has assessed the effectiveness of these teachers in terms of student learning. This study uses data from New York City to assess the relative effectiveness and retention of career-switchers. It provides some evidence that these teachers are no more effective than other new teachers, and, in fact, they appear to be less effective at raising math scores of elementary and middle school students. There is little difference in overall transfer or leave rates between teachers with prior experience and other teachers, although career-switchers from college recommended programs do appear more likely to transfer schools.     

Validity Evidence Supporting Use of Anchoring Vignettes to Measure Teaching Practice

High-quality measures of instructional practice are essential for research and evaluation of innovative instructional policies and programs. However, existing measures have generally proven inadequate because of cost and validity issues. This paper addresses two potential drawbacks of survey self-report measures: variation in teachers’ interpretation of response scales and their interpretation of survey questions. To address these drawbacks, researchers tested out use of “anchoring vignettes“ in teacher surveys to capture information about teaching practice, and they gathered validity evidence in regard to their use as a tool for adjusting teachers’ survey self-reports about their instructional practices for research purposes, or potentially to inform professional development. Data from 65 teachers in grades 4-9 responding to our survey suggested that vignette adjustments were reliable and valid for some instructional practices more than others. For some instructional practices, researchers found significant and high correlations between teachers’ adjusted survey self-rating, through use of anchoring vignettes, and previous observation ratings of teachers’ instruction, including ratings from several widely-used observation rubrics. These results suggest that anchoring vignettes may provide an efficient, cost-effective method for gathering data on teachers’ instruction.     

Process for the 3D virtual reconstruction of a microcultural heritage artifact obtained by synchrotron radiation CT technology using open source and free software

Computer tomography (CT) technology has greatly contributed to the feasibility and convenience of detecting and visualizing the internal material constitution and geometrical fabrication of museum artifacts. This paper presents a case study of 3D virtual reconstruction for the CT-acquisition-based study of a cultural heritage artifact. It documents the complete procedure, including the preprocessing, segmentation and visualization of the data by providing coarse interactive exploration and integrated high-quality renderings. A parallel aim achieved was to use open source tools and free software for segmentation and visualization, thus providing full transparency of the adopted methodology and 3D visualization methods, and a cost effective solution for ordinary CPU-based PC users. Furthermore, the challenges of the large data volumes involved have been addressed using preprocessing, a segmentation scheme and linked front-to-back management to keep interaction and high-quality rendering available, thus achieving corresponding demands.