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41.
Governments worldwide are changing their educational policies to improve student performance. Some of these reforms involve the introduction of high-stakes testing, which often creates negative effects such as ‘teaching to the test’. This article deals with the use of low-stakes testing in the German states of Hesse and Bremen, and analyses whether statewide low-stakes testing produces comparable results to the use of high-stakes tests from the perspective of teachers. Moreover, it seeks to identify the factors responsible for the observable teaching to the test effect, above and beyond the use of statewide exams. The data come from surveys carried out in the framework of a longitudinal study funded by the German Research Foundation. Hesse and Bremen introduced statewide exit exams in several subjects in 2007 and 2008 as low-stakes tests. Our quasi-experimental study has been evaluating these implementations since 2007.  相似文献   
42.
This article explores self management in professional work in the context of a shift from traditional professionalism to forms of governance where functions and responsibilities previously attributable to the professional communities are ‘insourced’ to the individual worker. Drawing on data from an interview study among recently educated computer engineers we examine how professionals within this field engage themselves in continuous learning and knowledge management by exercising what Foucault calls technologies of the self. Our data suggest that the computer engineers employ a range of techniques related to risk management, career monitoring, self motivation and knowledge control that enable them to cope with the multiple demands of the present. They also connect to new expert communities and engage in new forms of community alignments. However, the long‐term effects of the current modes of regulation are more uncertain.  相似文献   
43.
ObjectiveThe aims of this cross-sectional survey were to examine the prevalence, type and intensity of abuse in street children in Jaipur city, India.MethodBased on purposive random sampling, 200 street children, inclusive of equal number of boys and girls, were selected from the streets of Jaipur city, India, and administered an in-depth interview schedule which included five areas of abuse, namely, “general abuse,” “health abuse,” “verbal abuse,” “physical abuse,” and “psychological abuse.” Data was interpreted using percentages, t-test and correlations.ResultsStreet children reported experiences of abuse in all the five areas under study. Larger numbers of children (61.8%) scored in the “moderate” category of abuse while 36.6% children indicated abuse in “severe” and “very severe” categories on the intensity of abuse. Highest mean scores were obtained on the “verbal” and “psychological” area of abuse. Gender differences were significant in health and overall abuse, indicating boys to be significantly more abused than girls. There were significant positive correlations of abuse with increasing “age” and “income” of street children; and the occurrence of “multi-type” maltreatment and neglect in street children was clearly present.ConclusionDifferent forms of abuse are prevalent in street children in India. This area of study needs attention both by the researchers and the social workers.Practice implicationschildren who are identified in severe and very severe categories of abuse should be worked with in a follow up study with the help of governmental and nongovernmental agencies working in the field for child welfare.  相似文献   
44.
Health issues represent a frequent problem for athletes, as this particular demographic is repeatedly confronted with physically and psychologically stressful situations. Back pain (BP) materialises as comparatively common health problem being regarded as functionally limiting and psychologically straining burden for athletes. According to research conducted on athletes with BP, biomechanical and physiological mechanisms emerge as influential, whereas stress-related psychological factors appear to be neglected. For athletic injuries, the essential impact of psychological processes on injury occurrence and return from injury has already been corroborated. Hence, the aim of this literature review is to: (1) introduce a conceptual differentiation between injuries and BP; (2) summarise the results obtained regarding stress-related psychological aspects for injuries; and (3) connect the injury research to the state-of-the-art evidence regarding stress-related factors for BP among athletes. A distinction between injuries and BP could be established based on previous definitions, despite the fact that a considerable overlap between both concepts prevails. Injuries can be attributed to a physical origin, whereas BP frequently lacks this physical criterion. For BP, our enquiry yielded four studies including psychological measures of stress – with two studies specifically examining the association between BP and psychological stress among athletes longitudinally. Abundant findings from the general population support the importance of considering psychological and specifically stress-related factors in BP prevention and rehabilitation, but evidence related to the athletic field remains elusive. Further scientific investigations with a wider methodological approach are needed to deepen the knowledge about the crucial relationship between psychological stress, BP, and athletes.  相似文献   
45.
Despite the known benefits of habitual exercise in patients with heart disease, less than half of these patients exercise regularly and many of those who initiate programs fail to maintain physical activity routines over the long term. The aim of this research was to examine processes related to short- and long-term regulation of exercise to gain a clearer understanding of why people might fail to maintain intended behavioral changes. We modeled intention formation and plan formulation to investigate the distinct roles of self-efficacy and motivation (self-determination) in different phases of behavior change. Our results showed self-efficacy to be more relevant to exercise intentions and motivation to exercise planning. This research provides evidence supporting the proposition that the psychological processes related to short- and long-term regulation of behavior change differ and suggests that people might fail to continue regulating intended behavior owing to a lack of self-determined motivation.  相似文献   
46.
The law of mass-action led chemists to the belief that reactions approach equilibrium steadily. So the discovery of chemical oscillations came as a surprise. Now chemists are very familiar with reactions that oscillate in time and/or space. Experimental and theoretical studies of such reactions showing temporal and spatial oscillations attract the interest of many laboratories world-wide. The Lotka-Volterra model is the simplest mathematical model which exhibits such oscillations. In this article, we use this model to illustrate chemical oscillations with the help of a computer program.  相似文献   
47.
48.
In this study, we explored the relationships between teachers’ self-articulated professional learning goals and their teaching experience. Although those relationships seem self-evident, in programmes for teachers’ professional development years of teaching experience are hardly taken into account. Sixteen teachers with varying years of experience and subjects were interviewed. The results show different learning goals, related to communication and organisation, curriculum and instruction, innovation, responsibilities, and themselves as professional. Various relationships between learning goals and teaching experience emerged, which clearly reflect the development from early- to mid- and late-career teachers. Issues related to curriculum and instruction appeared to be learning goals for early- and mid-career teachers. This implies that regardless of increasing teaching expertise, curriculum and instruction remain central to teachers’ continuous learning. Late-career teachers were interested in learning about extra-curricular tasks and innovations. Models of professional life phases have been used to interpret these results.  相似文献   
49.
Previous studies have shown (1) that the form of the pigeon’s conditioned keypecking response resembles that of its ingestive pecking response, (2) that both ingestive and conditioned pecking in the pigeon are compound responses, including both transport (neck-movement) and gape (jaw-movement) components, and (3) that during operant conditioning or autoshaping of pecking behavior, the gape component comes under the associative control of the CS. In the present study, the gape component was experimentally isolated and a classical conditioning paradigm (water US) was used to bring jaw movements under the control of a CS (light). The results indicate that the topography of the jaw-movement CR is very similar to, though more variable than, that of the UR. They are consistent with the hypothesis that reported similarities in the form of ingestive and conditioned pecking responses reflect, in part, classical conditioning of the gape component.  相似文献   
50.
Metabolic syndrome contributes to pathogenesis of Type-2 diabetes and CAD. Insulin Resistance is the key factor of metabolic syndrome implicated in development of Non Alcoholic Fatty Liver Disease (NAFLD). In present study we have investigated the prevalence of NAFLD in metabolic syndrome and contribution of metabolic risk factors in causation of NAFLD in non-diabetic North Indian male population. The study was conducted on 495 non-diabetic, nonalcoholic subjects (age 30–65 years). Metabolic Syndrome was assessed by using ATP III and ADA (2005) criteria. Anthropometric factors-Waist circumference and blood pressure were measured. Fasting serum samples were analyzed for Glucose, Triglycerides, Cholesterol and its fractions, Insulin, Alanine transaminase, Aspartate transaminase, Gamma glutamyl transferase and free fatty acids. Insulin resistance was estimated by Homeostasis Model and Insulin sensitivity by QUICKI Index. Liver ultrasonographic scanning was used for assessing fatty liver. The prevalence of metabolic syndrome and NAFLD was 24% and 14.8% respectively in non-alcoholic population and 27% of metabolic syndrome had NAFLD which was associated with hyperinsulinemia, insulin resistance, insulin insensitivity along with elevated levels of waist circumference, blood pressure, triglyceride, FFA and decreased HDL-Cholesterol. The prevalence of NAFLD increased with insulin resistance and clustering of metabolic risk factors.  相似文献   
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