On improving Tunstall codes

Though many compression methods are based on the use of variable length codes, there has recently been a trend to search for alternatives in which the lengths of the codewords are more restricted, which can have useful applications, such as easier processing and fast decoding. This paper explores the construction of variable-to-fixed length codes, which have been suggested long ago by Tunstall. Using new heuristics based on suffix trees, the performance of Tunstall codes can in some cases be improved by more than 40%.     

Examining stress reactivity in neonates: relations between cortisol and behavior

The association between cortisol and behavioral reactivity to a medical heel stick and a neurobehavioral exam was examined in 100 healthy African American neonates, who have been underrepresented in this area of research. Using continuous measures, behavioral distress was associated with cortisol reactivity to both stressors. High levels of behavioral distress, however, were associated with cortisol reactivity only in response to the neurobehavioral exam. In contrast, low levels of behavioral distress were associated with cortisol reactivity only in response to the heel stick. The results highlight potentially important parameters for exploring the relation between biological and behavioral reactivity to stress such as the operationalization of behavioral distress and the context in which a stress response is elicited.     

Integrating Information Literacy and Evidence-Based Medicine Content within a New School of Medicine Curriculum: Process and Outcome

This column describes a process for integrating information literacy (IL) and evidence-based medicine (EBM) content within a new school of medicine curriculum. The project was a collaborative effort among health sciences librarians, curriculum deans, directors, and faculty. The health sciences librarians became members of the curriculum committees, developed a successful proposal for IL and EBM content within the curriculum, and were invited to become course instructors for Analytics in Medicine. As course instructors, the librarians worked with the other faculty instructors to design and deliver active learning class sessions based on a flipped classroom approach using a proprietary Information Mastery curriculum. Results of this collaboration may add to the knowledge base of attitudes and skills needed to practice as full faculty partners in curricular design and instruction.     

Cultivating Intergroup Emotions: An Intergroup Threat Theory Approach

The current study tests whether media consumption is associated with negative intergroup emotions toward Blacks, Latinos, and Asians and whether media use indirectly influences intergroup emotions via threat perceptions. We do so using a two-study survey design. Results from Study 1 indicated that media consumption is associated with anger toward Latinos and Asians but not anger toward Blacks. We also found that media use was associated with anxiety toward Blacks, Latinos, and Asians. Results from Study 2 indicated that media use indirectly influences anger and anxiety toward Blacks and Latinos through perceptions of threat. Media consumption did not indirectly influence anger and anxiety toward Asians, though perceptions of threat did directly influence intergroup emotions toward this group. The discussion highlights the important, but negative, role of media in intergroup processes.     

Depictions of Gender on Primetime Television: A Quantitative Content Analysis

To document current portrayals of women and men on primetime television, a quantitative content analysis was conducted. A 1-week composite of primetime television programming across 9 broadcast and cable networks was randomly sampled, yielding 89 programs and 1,254 characters. Consistent with prior findings, women were significantly underrepresented on primetime TV when compared with men. Analyses examined representations of gender in the realms of occupation, aggression, sexualization, and stereotypically masculine and feminine attributes, with comparisons drawn across different age groups. Contrary to popular belief, these findings suggest that the current state of primetime television does not represent a “golden age” for women. Although it appears that some gender stereotypes have declined when compared to previous decades, others (e.g., dominant men, sexually provocative women) have persisted. Implications are discussed in terms of cultivation and social cognitive theories.     

Breaking New Ground: The Case for Seed Libraries in the Academic Library

Seed libraries are a relatively new innovation in the library field, offering seeds, gardening information, and the opportunity for community and ecological engagement to members. While they are increasingly popular in public libraries, they have not yet established a foothold in academic libraries. This paper defines the nature and role of seed libraries, the current state of seed libraries in North American universities, and offers recommendations for the establishment of seed libraries in academic libraries.     

“To veil the threat of terror”: Afghan women and the ⟨clash of civilizations⟩ in the imagery of the U.S. war on terrorism

This article explores the role of widely circulated images of Afghan people in building public support for the 2001–2002 U.S. war with Afghanistan. Emphasizing images of women, I argue that these representations participate in the more general category of “the clash of civilizations,” which constitutes a verbal and a visual ideograph linked to the idea of the “white man's burden.” Through the construction of binary oppositions of self and Other, the evocation of a paternalistic stance toward the women of Afghanistan, and the figuration of modernity as liberation, these images participate in a set of justifications for war that contradicts the actual motives for the war. These contradictions have a number of implications for democratic deliberation and public life during wartime.