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71.
This paper explores the difficulties that novice teachers confront at two economically, socially, and academically disadvantaged schools in the state of Nuevo Leon, Mexico. The researchers employed the action research tradition. Problems were identified using participant observation during reflexive workshops conducted with novice teachers and also in school settings. Teacher-generated written documents during the workshops were also analyzed. The difficulties these teachers face include issues related to parent involvement, resources, students’ basic learning background, teaching strategies for students with particular needs, discipline, work overload, and career preparation and curricular reform. The identified challenges are similar to those that beginning teachers typically experience. However, results of this study highlight the ways in which the immediate working context and characteristics of Mexico’s educational system uniquely impact and structure the experience of novice teachers in disadvantaged schools.  相似文献   
72.
E-Reserves is a library support service that was conceived as a strategic, decentralized response to changes occurring in curricular resource formats during the 1990s. It is a service that has since become ubiquitous in academic libraries and one that is presently facing a crisis spurred by shifts in user culture, e-learning environments, and modes of scholarship production. Challenges facing E-Reserve services are compounded by a professional culture of isolation and by the absence of best practices and internal assessment measures that can serve as effective rubrics to measure changes or test the efficacy of current service models. This analysis of the history of E-Reserve services and evaluation of curricular support needs of faculty and students sheds light on the current crisis and envisions possible futures for the service. The article advocates for a move toward hybrid and iterative service models and highlights the importance of collaboration and outreach to ensure the future viability of E-Reserve services.  相似文献   
73.
A newly revised Interlibrary Loan Code for the United States was approved in 2016, the 100th anniversary of its first appearance. This article outlines the 2-year, iterative revision process undertaken by the ALA RUSA STARS Codes, Guidelines, and Technical Standards Committee, including the results of two public surveys and significant changes to the Interlibrary Loan Code for the United States. The authors hope to provide a template for future revisions and share the process with the entire interlibrary loan community.  相似文献   
74.
In the clinical laboratory setting, interferences can be a significant source of laboratory errors with potential to cause serious harm for the patient. After hemolysis, lipemia is the most frequent endogenous interference that can influence results of various laboratory methods by several mechanisms. The most common preanalytical cause of lipemic samples is inadequate time of blood sampling after the meal or parenteral administration of synthetic lipid emulsions. Although the best way of detecting the degree of lipemia is measuring lipemic index on analytical platforms, laboratory experts should be aware of its problems, like false positive results and lack of standardization between manufacturers. Unlike for other interferences, lipemia can be removed and measurement can be done in a clear sample. However, a protocol for removing lipids from the sample has to be chosen carefully, since it is dependent on the analytes that have to be determined. Investigation of lipemia interference is an obligation of manufacturers of laboratory reagents; however, several literature findings report lack of verification of the declared data. Moreover, the acceptance criteria currently used by the most manufacturers are not based on biological variation and need to be revised. Written procedures for detection of lipemia, removing lipemia interference and reporting results from lipemic samples should be available to laboratory staff in order to standardize the procedure, reduce errors and increase patient safety.  相似文献   
75.
Abstract

Competitive sport has been under increasing discussion as a possible favourable factor in the development of eating disorders among children and adolescents. The aim of this study was to determine the frequency of sport-specific eating disorders, in line with the concept of anorexia athletica. This prospective field study included one experimental group and two control groups (disease and healthy). Fifty-two pre-professional ballet dancers aged 13–20 years were tested for clinical eating disorders, anorexia athletica criteria, eating disorder related psychopathology and self-concept, and were compared with 52 patients with anorexia nervosa and 44 non-athletic controls of the same age. The study was conducted using semi-structured interviews as well as self-report questionnaires. A clinical eating disorder diagnosis was made in 1.9% of the ballet dancers versus 0% of the high school students; anorexia athletica was diagnosed in 5.8% of the dancers versus 2.3% of the students. Ballet dancers scored lower than patients with anorexia nervosa with regard to eating disorder related psychopathology and higher than the patients with regard to self-concept. We conclude that more sensitive tools to differentiate between sport-specific (eating) patterns, anorexia athletica and clinically relevant eating disorders are needed, especially for aesthetic sports such as ballet. It remains an important goal to identify athletes with symptoms of anorexia athletica irrespective of their physique and/or sport.  相似文献   
76.
Episodic memory relies on discriminating among similar elements of episodes. Mnemonic discrimination is relatively poor at age 4, and then improves markedly. We investigated whether motivation to encode items with fine-grain resolution would change this picture of development, using an engaging computer-administered memory task in which a bird ate items that made her healthier (gain frame), sicker (loss frame), or led to no change (control condition). Using gain-loss framing led to enhanced mnemonic discrimination in 4- and 5-year-olds, but did not affect older children or adults. Despite this differential improvement, age-related differences persisted. An additional finding was that loss-framing led to greater mnemonic discrimination than gain-framing across age groups. Motivation only partially accounts for the improvement in mnemonic discrimination.  相似文献   
77.
Previous research has suggested that performance for items requiring memory-binding processes improves between ages 4 and 6 ( J. Sluzenski, N. Newcombe, & S. L. Kovacs, 2006 ). The present study suggests that much of this improvement is due to retrieval, as opposed to encoding, deficits for 4-year-olds. Four- and 6-year-old children ( N  = 48 per age) were given objects, backgrounds, and object + background combinations to remember. Younger children performed equivalently to 6-year-olds during a working memory task for all types of memory questions but were impaired during a long-term memory task for the object + background combinations. Furthermore, this deficit was completely due to differences in false alarm rates, suggesting that separate analyses of hits and false alarms may be preferable to corrected recognition scores when studying memory development.  相似文献   
78.
It seems anachronistic that we expect students to handwrite essay examinations when almost all their other work is mediated by computer. Two universities, one in the UK and one in Australia, are exploring the use of computers in free text response examinations. This paper compares both the attitudes and the behaviours of their students concerning the use of computers in essay examinations, and contrasts the responses from the two cohorts. Most of the students have confidence in their typing skills and report typing as least as fast as they can handwrite. The analysis demonstrates that although students recognise that examination essays should have good structure and argument, when in the pressure of an examination, it is all too easy for them to be more concerned with the sheer amount of text they can write.  相似文献   
79.
The controversy surrounding the role of competitive sports in the development of eating disorders has increased in recent decades. There are inconsistent findings in the literature concerning the relationship between eating disorders and competitive sports, especially aesthetic sports. The aim of this study was therefore to assess eating disorder-related psychopathology in a sample of competitive figure skaters (FS) representative for competitive aesthetic sports. Special attention is paid to the investigation of body image and body satisfaction. Patients with anorexia nervosa (AN) and a healthy control group (CG) served as comparison groups. None of the FS met the complete diagnostic criteria for an eating disorder. Furthermore no significant differences were observed between the FS and the CG regarding body image and body satisfaction. However, a significant difference was detected compared to the AN patients. Our results underline the necessity for a differentiated analysis and careful diagnostics of sport-specific aspects when considering eating disorder-related psychopathology in competitive sports.  相似文献   
80.
Recent international comparisons show that themathematics achievement of American students is belowthe international average. In response to thissituation, the present study compared first-year college students enrolled in remedial-type mathematicscourses with their counterparts enrolled in nonremedialcoursework. Findings include that students enrolled innonremedial mathematics courses enter the institution with many advantages over students enrolled inremedial mathematics. Tests of a path analytic modelconfirmed that background variables play a major role indetermining success in college mathematics.  相似文献   
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