Regular physical exercise in patients with type II diabetes mellitus

It is widely accepted that regular physical exercise helps diabetic patients control blood glucose, reduce cardiovascular risk factors, and prevent other related complications. In spite of the undoubted benefits of regular physical exercise, diabetic patients with chronic complications should be aware of potential hazards of practicing exercise. To avoid some harmful consequences of acute exercise, it is necessary to adopt a vigilant attitude with these risk patients and to carefully adjust type and intensity of exercise to the individual situation. This article intends to summarize and analyze the current literature concerning the preventive and therapeutic effects of regular exercise in diabetic patients, pointing out its physiological influence on blood glucose regulation, and to analyze the potential risks of acute physical exercise and the precautions given to patients with a variety of complications.     

Nenparametric Two-Group Classification: Concepts and a SAS-Based Software Package

This article introduces BestClass, a set of SAS macros, available in the mainframe and workstation environment, designed for solving two-group classification problems using a class of recently developed nonparametric classification methods. The criteria used to estimate the classification function are based on either minimizing a function of the absolute deviations from the surface which separates the groups, or directly minimizing a function of the number of misclassified entities in the training sample. The solution techniques used by BestClass to estimate the classification rule use the mathematical programming routines of the SAS/OR software. Recently, a number of research studies have reported that under certain data conditions this class of classification methods can provide more accurate classification results than existing methods, such as Fisher's linear discriminant function and logistic regression. However, these robust classification methods have not yet been implemented in the major statistical packages, and hence are beyond the reach of those statistical analysts who are unfamiliar with mathematical programming techniques. We use a limited simulation experiment and an example to compare and contrast properties of the methods included in Best-Class with existing parametric and nonparametric methods. We believe that BestClass contributes significantly to the field of nonparametric classification analysis, in that it provides the statistical community with convenient access to this recently developed class of methods. BestClass is available from the authors.     

International Business and National Culture: A Literature Review and Research Agenda

This literature review analyzes leading international business and management journals from 2000 to 2012 in order to explore the role of national culture in international business research. Through the analysis of the 265 selected articles, the study thematically maps the field and identifies research challenges and opportunities. It reflects on avenues for future research related to both thematic and methodological issues, among them: research focused on the impact of the home/host national culture on internationalization processes (as existing literature mainly focuses on cultural distance); the role to be played by new theoretical frameworks; and the need to consider cultural positions and cultural friction rather than traditional cultural distance when analyzing internationalization decisions.     

‘In a bind’: Foster mothers' experiences with welfare reform

The Personal Responsibility and Work Opportunity Reconciliation Act of 1996 has diminished government support to single mothers and further limits the options for full-time parenting, placing priority on work participation and reduction of welfare caseloads. Based upon interviews with 100 low-income foster mothers who are also Temporary Assistance for Needy Families (TANF) recipients, this study examines their experiences with these policies while they balance multiple responsibilities as caregivers for abused and neglected children from the child welfare system. The implications of TANF policies for foster mothers and policy alternatives that support diverse family structures are also discussed.     

Zur Rolle lebensweltlicher Mehrsprachigkeit für das Lernen im Fachunterricht – ein Beispiel aus einer Videostudie der Sekundarstufe II

In this article an exemplary analysis focussing on the role of multilingual communication in upper secondary education at a German school will be presented. In the analysis, we focus on the language choice of two pupils who, during partner work on the analysis of a historical speech in History class, use both the German and Russian language. We reconstruct extracts of their task solving process in the context of a functional-pragmatic discourse analysis. The excerpts of the partner work presented in the text show approaches of multidimensional reflection processes in working with the text, during which it comes to a functional use of both languages. The relevance of our reconstruction of student-student interaction during task solving will become evident through the embedment of the results in the controversial discussion on multilingual communication in mainstream classrooms.     

Body mass index and functional status in community dwelling older Turkish males

Abstract

Objectives: To assess sex hormones in men with obesity and prostate cancer (PCa) and to study association between androgens and the pathogenesis biology of PCa in vitro.

Subjects and methods: One hundred and eighty-one men older than 45?years selected from of a population attending to Urology departments screening for PCa, (78 participants without PCa and 103 patients with PCa). All participants were assessed for body mass index (BMI), age, Gleason score, and PSA. Endocrine profile was determined for LH, total testosterone (TT), 17β-estradiol (E2), prolactin and leptin. Biochemical profile (HbA1c, triacylglycerols and lipoproteins) was also determined. In vitro experiments were also performed, involving the study of 5α-dihydrotestosterone (DHT) and E2 in the presence of adipocyte-conditioned medium (aCM).

Results: All variables were continuous and described a Gaussian distribution unless mentioned. To determine the relation of aggressiveness, variable were transformed into categories. Thus, PCa aggressiveness is associated with the increase of age and BMI (p?<?.0001) but with is decreased with TT and E2 (p?<?.05). Moreover, adipocyte-secreted molecules increase aggressiveness of PCa cells in vitro. Lastly, DTH but not E2 enables invasiveness in vitro.

Conclusions: It was observed a coexistence of hormone axis profile alteration with sex hormones and BMI in PCa patients, in accordance with the new perspective of PCa pathogenesis.     

Quality of College Life (QCL) of Students: Further Validation of a Measure of Well-being

This paper reports a study designed to further validate a measure of quality of college life (QCL) of university students (Sirgy, Grzeskowiak, Rahtz, Soc Indic Res 80(2), 343–360, 2007). Two studies were conducted: a replication study and an extension study. The replication study involved surveys of 10 different college campuses in different countries. The results of the replication study provided additional nomological (predictive) validation support of the measure based on a theoretical model mapping out the antecedents and consequences of satisfaction with college life. With respect to the extension study, the focus was to further test the nomological validity of the QCL measure by arguing and empirically demonstrating that the consequence of QCL is life satisfaction. The extension study involved a survey of three college campuses in different countries. The results were also supportive of the nomological validity of the QCL measure.     

A Three-Pronged Approach to Addressing Racial Disproportionality and Disparities in Child Welfare: The Santa Clara County Example of Leadership, Collaboration and Data-Driven Decisions

Disproportionality and disparities in the treatment of children of color has been a growing concern in the child welfare system. System stakeholders have begun to recognize the problem through data, which help identify discrepancies within their jurisdictions. Nationally, the primary concern is the overrepresentation of African American children within the child welfare system, where African Americans represent proportions of the foster population at a level more than twice as high as they are represented in the community at large. In some jurisdictions, however, this is only one piece of the disproportionality concern. San Jose, for example, has both an overrepresentation of African American and an overrepresentation of Hispanic children in the child welfare system. Because San Jose’s child welfare population is unique, they have had to take a unique approach to addressing these concerns. This article outlines strategies and tools used to begin reducing disproportionality within the child welfare and juvenile dependency court system, using San Jose’s experience as an example. Some of the key approaches to addressing disproportionality include ensuring a systems approach (creating a Cross Agency Systems Team that prioritizes services for parents and children in various systems, e.g., mental health, substance abuse, etc.); addressing disproportionality from multiple perspectives and examining the roles’ of caseworkers, supervisors, service providers, judges, and attorneys; gaining community and system stakeholder buy-in by maintaining momentum and providing opportunities for dialogue about the complex issues facing families of color; using a data-driven approach to inform ongoing initiatives and changes in policy and practice (e.g., closely examining policies and practices such as the frequency of recommendations to by-pass reunification services); and implementing changes in practice at multiple levels including child welfare and on the bench. The examination of San Jose’s approach reveals challenges, successes, and lessons learned.     

Selection of a voice for a speech signal for personalized warnings: the effect of speaker's gender and voice pitch

There is an increasing interest in multimodal technology-based warnings, namely those conveying speech-warning statements. This type of warning may be tailored to the situation as well as to the target user's characteristics. However, more information is needed on how to design these warnings in a way that ensures intelligibility, promotes compliance and reduces the potential for annoyance. In this context, this paper reports an exploratory study whose main purpose was to assist the selection of a synthesized voice for a subsequent compliance study with personalized (i.e., using the person's name) technology-based warnings using Virtual Reality. Participants were requested to listen to speech signals, gathered from a speech synthesizer and post-processed in order to change the pitch perception, and then these were evaluated by fulfilling the MOS-X questionnaire. After that, the participants ranked the voices according to their preference. The effects of the speaker's gender and voice pitch, on both ratings and ranking were assessed. The preference of the male and female listeners for a talker's voice gender was also investigated. The results show that participants mostly prefer as first choice the high-pitched female voice, which also gathered the highest overall score in the MOS-X questionnaire. No significant influence of the participants' gender was found on the assessed measures.