Books of the Month

THE INTERNATIONAL NEWS SERVICES by Jonathan Fenby (New York: Schocken Books, 1986—$19.95)

MARKETPLACE FOR TELECOMMUNICATIONS: REGULATION AND DEREGULATION IN INDUSTRIALIZED DEMOCRACIES edited by Marcellus S. Snow (New York: Longman, 1986—$34.95)     

Mutatis Mutandis: Writing (After Derrida [After McLuhan {After Joyce}])

This essay plays Jacques Derrida and Marshall McLuhan off of one another and allows each to rub up against the other's voice. It will be argued that these works (which are rarely, if ever, read in conjunction) elicit underlying themes of each other, including similarities found in both their subjects and their reception. A connection via James Joyce will be discussed as well. The “writing” of non-books by Derrida and McLuhan, it will be argued, deconstructs communication form in a manner similar to Joyce, highlighting and applying to Derrida and McLuhan what Samuel Beckett once said of Joyce: “His writing is not about something; it is that something itself.”     

In/discernible bodies: the politics of passing in dominant and marginal media

This essay explores news media coverage of two types of alleged “passing”: passing across racial lines from Black to White and across sex lines from female to male. Textual analysis of dominant print media and print media discourses produced by and/or addressed to Blacks and queers reveals prominent frames through which news consumers are invited to perceive these events. In particular, the analysis demonstrates that both dominant and marginal social groups express the desire to fix the identities of passers in a single, discrete category, although these groups wish to do so for disparate reasons. In addition, marginal groups frame passing events within broad cultural and historical contexts in contrast to the narrow contexts framed by dominant media. Comparison of race and sex passing exposes the similarities–including community consternation about the passer–and differences–including disparate focus on civil rights rather than identity issues–between Black and queer coverage of these events. Comparison of race and sex passing also exposes the way in which dominant media correlate race passing with class passing, while sex passing is correlated to sexuality passing (that is, queer passing for heterosexual).     

Use of Polarised Light Microscopy to Improve Conservation of Parchment

ABSTRACT

The preservation state of parchment primarily depends on the structure of the collagen fibre network, which in turn is responsible for optical anisotropy, i.e. birefringence. Polarised light microscopy can therefore be used as a non-invasive technique that allows recording of birefringence distribution in the parchment, which directly relates to stress–strain distribution. Using samples from diverse sources (commercial parchment, parchment used by restorers for book binding, and parchment fabricated for the purpose of this study), we assessed the capability of polarised light microscopy for various diagnostics. We performed, for instance, identification of gelatinised regions, layered or ?brous regions in parchment cross section, qualitative analysis of parchment fat content (lipids), observation of stress-induced patterns resulting from tensile tests, and observation of water diffusion. These proof-of-principle experiments extend the capability of polarised light microscopy far beyond its common use and open the path to its deployment in conservation studies.     

Assessment of an iPad Loan Program in an Academic Medical Library: A Case Study

An academic medical library expanded its iPad loan service to multiple campus libraries and conducted an assessment of the service. iPads loaded with medical and educational apps were loaned for two-week checkouts from five library campus locations. Device circulation statistics were tracked and users were invited to complete an online survey about their experience. Data were gathered and analyzed for 11 months. The assessment informed the library on how best to adapt the service, including what resources to add to the iPads, and the decision to move devices to campuses with more frequent usage.     

Stability of Rasch Scales Over Time

Item response theory (IRT) methods are generally used to create score scales for large-scale tests. Research has shown that IRT scales are stable across groups and over time. Most studies have focused on items that are dichotomously scored. Now Rasch and other IRT models are used to create scales for tests that include polytomously scored items. When tests are equated across forms, researchers check for the stability of common items before including them in equating procedures. Stability is usually examined in relation to polytomous items' central “location” on the scale without taking into account the stability of the different item scores (step difficulties). We examined the stability of score scales over a 3–5-year period, considering both stability of location values and stability of step difficulties for common item equating. We also investigated possible changes in the scale measured by the tests and systematic scale drift that might not be evident in year-to-year equating. Results across grades and content areas suggest that equating results are comparable whether or not the stability of step difficulties is taken into account. Results also suggest that there may be systematic scale drift that is not visible using year-to-year common item equating.     

Gender DIF in Reading and Mathematics Tests With Mixed Item Formats

This was a study of differential item functioning (DIF) for grades 4, 7, and 10 reading and mathematics items from state criterion-referenced tests. The tests were composed of multiple-choice and constructed-response items. Gender DIF was investigated using POLYSIBTEST and a Rasch procedure. The Rasch procedure flagged more items for DIF than did the simultaneous item bias procedure—particularly multiple-choice items. For both reading and mathematics tests, multiple-choice items generally favored males while constructed-response items generally favored females. Content analyses showed that flagged reading items typically measured text interpretations or implied meanings; males tended to benefit from items that asked them to identify reasonable interpretations and analyses of informational text. Most items that favored females asked students to make their own interpretations and analyses, of both literary and informational text, supported by text-based evidence. Content analysis of mathematics items showed that items favoring males measured geometry, probability, and algebra. Mathematics items favoring females measured statistical interpretations, multistep problem solving, and mathematical reasoning.     

Temperature in Science Textbooks: Changes and Trends in Cross-National Perspective (1950–2000)

This study explores the way the concept of temperature was presented in lower-secondary science textbooks in France, Poland and England at the end of the 1950s and in the 2000s. I draw on history of science, history of education and book history to analyze different treatments of an apparently-similar scientific concept with regard to national contexts and diachronic change. Thus I include a presentation of the contexts in which the textbooks I study are published, and I analyse textbooks content revealing different approaches to present the notion of temperature. I argue that these results show that textbooks are valuable sources to investigate public representations of science and their shift over time, and I conclude by stressing the parallel of this evolution with change in everyday relationship with science and scientific instruments.     

EUROPEAN DISSERTATION SUMMARIES

Co‐operative learning means shared leadership where there is not just one leader in a group but where each member of the group is a leader. A leader demonstrates academic as well as collaborative skills in helping the group achieve a goal. Some academic skills are verbal interactions such as initiating ideas, responding by summarizing or suggesting procedures. Collaborative skills that build and maintain a good working relationship within the group include verbal interactions of praising group members and inviting others to get involved. The purpose of this study was to examine the verbal interactions and non‐verbal behaviours within unstructured learning groups. The verbal interactions were classified as positive if they aided the group to accomplish its goal and negative if they inhibited the group accomplishing its goal. Twenty‐eight students from seven intermediate‐grade level classrooms, grouped heterogeneously for sex and race and homogeneously for their ability in science, were selected for observation as they were doing a science activity. In general students’ verbal interactions were positive (i.e., there were more than four times more positive interactions than negative interactions). Further, in reviewing the positive interactions, students presented ideas more than four times as much as any of the other types of interactions. Females encouraged other members to participate in the activity significantly more than the males did. There was a trend in the number of times the equipment (clay) was handled; the males handled it more than the females as a function of race. Qualitative analyses revealed consistent patterns of interactions within groups of black and white males and females.