Lipid peroxidation and glutathione peroxidase in ischemic heart disease

With the growing interest in the concept of free radicals in the pathogenesis of myocardial ischemia, it was thought worthwhile to study the changes in lipid peroxides and antioxidant enzyme glutathione peroxidase (GPx) in ischemic heart disease (IHD). The study was carried out on 76 patients of IHD-38 of acute myocardial infarction (AMI) and 38 of stable ischemic heart disease (SIDH). They were age and sex matched with 38 normal healthy controls. A significant increase (p<0.001) in lipid peroxides as malondialdehyde (MDA) (5.9±0.7 mmol/L) and a decrease in GPx (24.6±2.2 U/gmHb) was found in patients of AMI when compared with controls. There was no significant difference in these values in SIHD. Thus this study confirms the earlier findings that MDA and GPx are useful parameters in IHD and their magnitude is dependent on severity and/or duration of ischemia. We suggest that these tests would be of use in smaller institutions with limited facilities.     

Effect of perceptual processing strategies on problem solving of reflective and impulsive children

Several studies employing the "20 questions" test reported that reflective children asked proportionally more constraint-seeking (CS) questions than did impulsive children. The finding was interpreted as supporting the generally accepted view that reflective children are more mature and more efficient problem solvers than impulsive children. Inexplicably, the reflectives' higher proportion of CS questions was not associated with fewer questions to solution, that is, with greater efficiency. The present study examined an alternative hypothesis that differences in performance of impulsive and reflective children on the "20 questions" test are due to individual differences in preferred perceptual processing strategy rather than in cognitive maturity of problem-solving strategy. Efficiency of performance of reflective and impulsive children was shown to be related to type of stimuli and experimental conditions employed, supporting a perceptual rather than cognitive-maturational interpretation.     

Culturally Relevant STEM Out-of-School Time: A Rationale to Support Gifted Girls of Color

Gifted girls of color represent a potentially untapped resource for increasing and sustaining a diverse science, technology, engineering, and mathematics (STEM) workforce. Girls of color possess unique mathematics and science gifts and talents that can remain unrealized if not addressed before middle school. Culturally responsive STEM out-of-school-time (OST) activities can be an effective means to develop STEM capacity in gifted girls of color. The researchers present three considerations to support the implementation of STEM OST. First, they offer a rationale for culturally relevant STEM enrichment activities for gifted girls of color. Next, the researchers consider how culturally relevant STEM OST activities can help to close the achievement gap. Finally, they explain how professional mentorship opportunities within OST activities can help gifted girls of color navigate the STEM pipeline.     

Which events can cause iteration in instructional design? An empirical study of the design process

Instructional design is not a linear process: designers have to weigh the advantages and disadvantages of alternative solutions, taking into account different kinds of conflicting and changing constraints. To make sure that they eventually choose the most optimal one, they have to keep on collecting information, reconsidering continuously whether their own decisions are still justified in the light of the latest insights. We have studied the role of iteration during instructional design. For our research, we have used an ISD-based method for the specification of training simulators. During our empirical evaluation study, we introduced five events that are likely to cause iteration. The results show that the quality of the designs is not directly related to the amount of iteration. We conclude that there are different kinds of iteration, triggered by different kinds of actions and events. We propose a list of triggers for iteration some of which originate from outside (new information, new opinions/arguments and acquisition procedures); others are caused by, or evolve from interaction with the design process itself (discovery of missing input, need to repair errors, new insights based on work later on in the design process, and new ideas of the designers). in final form: 4 August 2005     

School choice with education vouchers: an empirical case study from Hong Kong

This paper seeks to question what impact education vouchers have on the process of school choice. The context examined in the paper is the Pre-primary Education Voucher Scheme (‘Voucher Scheme’) introduced in 2007 in Hong Kong. Using a Straussian grounded theory method, data collected from 40 parent interviews are coded, analysed and developed into categories. The paper analytically situates the findings within a model, derived from the data, which is based on two properties: orientation and time. Orientation differentiates and emphasises the significance of choice factors in relation to the school versus the family, and time is related to focus on the present versus the future. The paper subsequently presents the data related to these properties and reflects on the intricate dynamic of parents’ school choice decisions under the Voucher Scheme.     

Rethinking Natural Environment Practice: Implications from Examining Various Interpretations and Approaches

Early intervention professionals have implemented natural environment practices for over a decade, despite the continued debate on how to interpret and implement this practice. This article reviews several theoretical frameworks for understanding natural environment practice, and also summarizes different approaches for implementation. The authors present a model for rethinking and redefining natural environment practice in the context of recent approaches.     

Power,Language, and Ideology: Historical and Contemporary Notes on the Dismantling of Bilingual Education

The authors situate the politics of language surrounding the passage of California's Proposition 227, by discussing the historical and contemporary conditions that have led to the recent dismantling of bilingual education. They review the dynamics of power, language, and ideology since precolonial times, through the colonial period, the era of the Treaty of the Guadalupe Hidalgo, the process of Americanization, the Civil Rights decades, and up to the current 227 law. These are used to bear the point that the hegemonic bond of language is a continual thread that carries over to the new millennium, as we witness the spread of English-only legislation.     

Citation Patterns in Recent Issues of Counselor Education and Supervision

This study compares the citation patterns of Counselor Education and Supervision with those of the Personnel and Guidance Journal, the Journal of Counseling Psychology, and the Counseling Psychologist. Citations from Counselor Education and Supervision for 1979 and 1980 were analyzed in terms of the most frequently cited authors and works published prior to and after 1958. The findings reveal that although there is some overlap between the works and authors cited in Counselor Education and Supervision and those cited in the counseling psychology journals, there is a sizable and unique body of literature and pool of authors cited in Counselor Education and Supervision. The impact of multiple authorship, the dependence function (within-journal citation) and other issues in counseling citation research are discussed.