Book Review: Too Much to Ask: Black Women in the Era of Integration

Review of Too Much to Ask: Black Women in the Era of Integration by Elizabeth Higginbotha

Faculty Diversity: Effective Strategies for the Recruitment and Retention of Faculty of Color

By the year 2000 one-third or more of the nation\u27s population will be composed of African Americans, Hispanics, American Indians, Asians, and other minority and immigrant groups. It is expected that two-thirds of the nation\u27s aging professorate will have to be replaced by the year 2000, and in the next century or two, women and minorities will out number non-minority men across the board. Unless more effective methods of recruitment and retention arc developed, few persons of color will be likely to assume faculty positions in American colleges and universities

Do cross border and domestic acquisitions differ? Evidence from the acquisition of UK targets

Journal ArticleNOTICE: this is the author’s version of a work that was accepted for publication in International Review of Financial Analysis. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Review of Financial Analysis, Vol. 31, pp. 61 – 69 doi: 10.1016/j.irfa.2013.09.001We investigate the determinants of short term wealth effects for both public acquiring and target shareholders following the announcement of UK acquisitions over the period 1990-2005. Regardless of their nationality, overall acquirers incur losses, with domestic acquirers' under-performing cross-border acquirers in general. For the latter no differences in returns between regions are found once the differences in corporate governance regimes are controlled for. Instead it is firm characteristics and in particular firm leverage that largely explain acquirers' returns. All targets gain significantly but the higher returns associated with international deals disappear once bid characteristics are controlled for. © 2013 Elsevier Inc

Educational Opportunity Programs for Students of Color in Graduate and Professional Schools

The significant underrepresentation of people of color in all occupational fields is clearly indicative of the exceptionally low percent of people of color in graduate and professional schools in America. Unless drastic actions are taken by universities across the nation to identify and recruit a significant number of students of color in undergraduate colleges it is unlikely that significant numbers of people of color will be available in the near future for potential employment

Hunger in America 2014: National Report

Feeding America, the nation's leading domestic hunger-relief organization, has conducted the most comprehensive study of hunger in America every four years since 1993. Like the prior studies, Hunger in America 2014 (HIA 2014), the latest iteration, documents the critical role that the charitable food assistance network plays in supporting struggling families in the United States. Study results are based on surveys of food programs in the charitable food assistance network supported by Feeding America, and clients that access services through that network in 2012-2013. In addition to this report on the Feeding America national network, this study has resulted in 42 state reports and 196 food bank reports detailing network activities on local levels.The current assessment occurs in a period with historically high demand for food assistance. Unemployment and poverty rates have remained high since the Great Recession of 2008, and the number of households receiving nutrition assistance from the federal government's Supplemental Nutrition Assistance Program has increased by approximately 50 percent between 2009 and 2013.Demand for charitable food assistance has also expanded. HIA 2014 finds an increased number of individuals relying on charitable assistance to access nutritious foods for themselves and their families

Why do Large Animals Never Actuate Their Jumps with Latch-Mediated Springs? Because They can Jump Higher Without Them.

As animals get smaller, their ability to generate usable work from muscle contraction is decreased by the muscle's force-velocity properties, thereby reducing their effective jump height. Very small animals use a spring-actuated system, which prevents velocity effects from reducing available energy. Since force-velocity properties reduce the usable work in even larger animals, why don't larger animals use spring-actuated jumping systems as well? We will show that muscle length-tension properties limit spring-actuated systems to generating a maximum one-third of the possible work that a muscle could produce-greatly restricting the jumping height of spring-actuated jumpers. Thus a spring-actuated jumping animal has a jumping height that is one-third of the maximum possible jump height achievable were 100% of the possible muscle work available. Larger animals, which could theoretically use all of the available muscle energy, have a maximum jumping height that asymptotically approaches a value that is about three times higher than that of spring-actuated jumpers. Furthermore, a size related "crossover point" is evident for these two jumping mechanisms: animals smaller than this point can jump higher with a spring-actuated mechanism, while animals larger than this point can jump higher with a muscle-actuated mechanism. We demonstrate how this limit on energy storage is a consequence of the interaction between length-tension properties of muscles and spring stiffness. We indicate where this crossover point occurs based on modeling and then use jumping data from the literature to validate that larger jumping animals generate greater jump heights with muscle-actuated systems than spring-actuated systems

Muscle-spring dynamics in time-limited, elastic movements

Muscle contractions that load in-series springs with slow speed over a long duration do maximal work and store the most elastic energy. However, time constraints, such as those experienced during escape and predation behaviors, may prevent animals from achieving maximal force capacity from their muscles during spring loading. Here we ask whether animals that have limited time for elastic energy storage operate with springs that are tuned to sub-maximal force production. To answer this question, we used a dynamic model of a muscle-spring system undergoing a fixed-end contraction, with parameters from a time-limited spring-loader (bullfrog: Lithobates catesbeiana) and a non time-limited spring-loader (grasshopper: Schistocerca gregaria). We found that when muscles have less time to contract, stored elastic energy is maximized with lower spring stiffness (quantified as spring constant). The spring stiffness measured in bullfrog tendons permitted less elastic energy storage than was predicted by a modeled, maximal muscle contraction. However, when muscle contractions were modeled using biologically-relevant loading times for bullfrog jumps (50 ms), tendon stiffness actually maximized elastic energy storage. In contrast, grasshoppers, which are not time limited, exhibited spring stiffness that maximized elastic energy storage when modeled with a maximal muscle contraction. These findings demonstrate the significance of evolutionary variation in tendon and apodeme properties to realistic jumping contexts and the importance of considering the effect of muscle dynamics and behavioral constraints when considering energy storage in muscle-spring systems

Ethnographic and Archaeological Investigations of Alpine Ice Patches in Southwest Yukon, Canada

Since the original 1997 discovery of ancient hunting implements in melting alpine ice patches of southern Yukon, approximately 146 well-preserved, organic artifacts have been recovered. Most of the artifacts, variously made of antler, bone, wood, and stone, represent complete or partial examples of throwing-dart (atlatl) and bow-and-arrow technology. Radiocarbon dates obtained thus far range from 8360 BP to 90 BP (uncalibrated). Our research indicates that in southern Yukon, throwing-dart technology persisted from at least 8360 BP to approximately 1250 BP, when it was abruptly replaced by bow-and-arrow technology. The collection has afforded archaeologists and First Nation researchers a unique opportunity to learn about past hunting technologies and practices and thus greatly improve our understanding of the enduring relationships between humans and caribou.Depuis la découverte en 1997 d'anciens objets de chasse dans les plaques de glace alpines du sud du Yukon, environ 146 artéfacts organiques bien conservés ont été récupérés. La plupart des artéfacts, faits de bois d'animal, d'os, de bois ou de pierre, représentent des exemples complets ou partiels de propulseur lance-javelins (atlatl) et d'une technologie axée sur l'utilisation d'arc et de flèches. La datation au radiocarbone varie de 8360 ans B.P. à 90 ans B.P. (non étalonné). Les recherches effectuées rélèvent que dans le sud-est du Yukon, la technologie reposant sur l'utilisation du lance-javelines a été en usage de 8360 ans B.P. au moins jusqu'à environ 1250 ans B.P., époque à laquelle elle fut soudain remplacé par la technologie reposant sur l'utilisation de l'ensemble arc et flèche. Grâce à cette collection, les archéologues et les chercheurs des premières nations ont pu en apprendre davantage sur les technologies et les méthodes de chasse utilisées à cette époque et ainsi améliorer leur compréhension des relations durables entre l'humain et le caribou