Lighting the Shroud of Turin for Exhibition in 2015

ABSTRACT

Lighting a cultural heritage artifact requires balancing visual perception with preventive conservation, by providing the best lighting (in terms of spectral distribution and quantity) to enable the viewer to appreciate details and color, while limiting photo-induced degradation. The paper outlines the methodology applied by a multi-disciplinary team while lighting the Shroud of Turin at its last public exhibition in 2015. The methodology considered the special requirements of the Shroud, including exposure to ultraviolet light, while providing appropriate display conditions that would meet audience expectations. The desired appearance (readability of the body image and color) was defined with the help of Shroud researchers and confirmed by subjective tests, while appropriate light levels for preservation were set in agreement with standard requirements and using knowledge of the degradation of linen in visible and UV light. The installation provided a controlled environment and a managed visitor route to the Shroud, assuring excellent perception of both details and color, with the lowest illuminance level about 15?lx.     

Reasons for Student Engagement in Extra-Class Communication

This study extends instructional communication research on extra-class communication (ECC) by presenting an integrative analysis comparing the explanatory utility of student- and instructor-oriented reasons for student engagement in frequent ECC. Results from 495 college students suggested that student-oriented reasons, specifically the relational and functional student motives, were the only significant, positive predictors of students’ perceptions of frequent ECC engagement. Other student motives (excuse making, participation, sycophancy) and perceptions of instructor approachability did not significantly predict perceived frequency of ECC engagement.     

Retrieving and classifying instances of source code plagiarism

Automatic detection of source code plagiarism is an important research field for both the commercial software industry and within the research community. Existing methods of plagiarism detection primarily involve exhaustive pairwise document comparison, which does not scale well for large software collections. To achieve scalability, we approach the problem from an information retrieval (IR) perspective. We retrieve a ranked list of candidate documents in response to a pseudo-query representation constructed from each source code document in the collection. The challenge in source code document retrieval is that the standard bag-of-words (BoW) representation model for such documents is likely to result in many false positives being retrieved, because of the use of identical programming language specific constructs and keywords. To address this problem, we make use of an abstract syntax tree (AST) representation of the source code documents. While the IR approach is efficient, it is essentially unsupervised in nature. To further improve its effectiveness, we apply a supervised classifier (pre-trained with features extracted from sample plagiarized source code pairs) on the top ranked retrieved documents. We report experiments on the SOCO-2014 dataset comprising 12K Java source files with almost 1M lines of code. Our experiments confirm that the AST based approach produces significantly better retrieval effectiveness than a standard BoW representation, i.e., the AST based approach is able to identify a higher number of plagiarized source code documents at top ranks in response to a query source code document. The supervised classifier, trained on features extracted from sample plagiarized source code pairs, is shown to effectively filter and thus further improve the ranked list of retrieved candidate plagiarized documents.     

Scaling up Content Analysis

ABSTRACT

Employing a number of different standalone programs is a prevalent approach among communication scholars who use computational methods to analyze media content. For instance, a researcher might use a specific program or a paid service to scrape some content from the Web, then use another program to process the resulting data, and finally conduct statistical analysis or produce some visualizations in yet another program. This makes it hard to build reproducible workflows, and even harder to build on the work of earlier studies. To improve this situation, we propose and discuss four criteria that a framework for automated content analysis should fulfill: scalability, free and open source, adaptability, and accessibility via multiple interfaces. We also describe how to put these considerations into practice, discuss their feasibility, and point toward future developments.     

Indoctrination and Systems: A Reply to Rebecca Taylor

This is a reply to Rebecca Taylor's 2017 JOPE article ‘Indoctrination and Social Context: A System‐based Approach to Identifying the Threat of Indoctrination and the Responsibilities of Educators’. It agrees with her in going beyond the indoctrinatory role of the individual teacher to include that of whole educational systems, but differs in emphasizing indoctrinatory intention rather than outcome; and in allowing the possibility of indoctrination without individual teachers being indoctrinators at all.     

Justifying Private Schools

The paper looks at arguments for and against private schools, first in general and then, at greater length, in their British form. Here it looks first at defences against the charge that private schooling is unfair, discussing on the way problems with equality as an intrinsic value and with instrumental appeals to greater equality, especially in access to university and better jobs. It turns next to charges of social exclusiveness, before looking in more detail at claims about the dangers private schools pose for democratic government. It then examines complications arising from shifts in the notion of ‘private’ education since the 1980s, before concluding, in the light of recent articles in JOPE about criteria for admission to university, with a discussion of Brighouse's proposal for the reform of private schooling. There are also shorter discussions of other suggestions for such reform.     

Elizabeth Anderson interviewed by John White

The distinguished US philosopher Elizabeth Anderson, who teaches at the University of Michigan, answers questions put to her by John White about educational aspects of her work in moral and political philosophy. She begins by describing her indebtedness to Dewey in his views on developing students’ capacities for intelligent enquiry and as citizens in a democracy. She elaborates on this in her emphasis on children learning fraternally together with others of diverse class, racial and ethnic backgrounds. She also discusses the control of education, looking at the role of the state and other political authorities in education, the charter school movement and home schooling. Well‐known for her views on democratic equality (as distinct from equality of fortune) and on an adequacy criterion of fairness, she shows how these ideas apply to education for a democratic society. This takes her into critical discussions of equality of educational opportunity, education as a positional good, and the rich variety of educational aims fitting a democracy of equals. Anderson has also written about the errors of theistic religion as well as two award‐winning recent books on the imperative of social integration and on the authoritarian powers of employers. Developing these thoughts in an educational direction, she writes here about religious and moral education, problems with assimilationist and multicultural approaches to schooling, and preparation for work as an educational aim.