美国学校教育反思:世界主义和社会排斥的视角

长期以来,在美国学校教育中高扬的"世界主义"(cosmopolitanism)原则,即超越传统民族国家忠诚归属界限,带有普世价值的全球公民意识,被认为是推动社会和个人进步的重要思想,进入学校课程系统,贯穿于教学实践的各个环节.理性与合理性精神、时间概念的转变和进步主义思想的推动,使得世界主义在美国公立学校教育中长久不衰.它以改造儿童的方式推动社会变革,对人文学科,特别是教育学、心理学产生了深刻影响;同时,世界主义又是一个主张包容、却推行社会排斥的系统,主要体现在:它通过问题解决、赋权原则、自由解放、言论开放和选择权利等手段,引导儿童的成长;但又对学校教育中的学生进行分类,以换喻、分类等方式,塑造不同类型的学生.终身学习概念的提倡和为了"一切儿童"的口号,都反映了其中蕴含的比较思维方式在追求平等同时,又在制造新的不平等,造成抑斥的状态.体现了世界主义原则通过创塑儿童来改造社会的双重特征.     

Cognitive styles and instructional design in university learning

Changes in conceptualization and measurement of the verbalizer–visualizer dimension led us to re-examine the hypothesis that students learn best when instructional material matches their cognitive style. First-year psychology university students (n = 41) studied information on three personality theories presented in text only, text+picture, or text+schematic diagram format, demonstrated recall and comprehension of each theory, and completed an adapted cognitive styles questionnaire. Spatial and object visual scale scores were not correlated, but the latter showed a significant though relatively weak negative correlation with verbal scale scores. Recall could be predicted from students' verbal and object visual scores when presentation format matched these cognitive styles. All three styles significantly predicted students' comprehension, but only when they matched the presentation format. The results support the distinction between spatial and object visual styles, and provide evidence that learning outcomes improve when instructional material is matched to students' cognitive styles.     

Zivilgesellschaft und freiwilliges Engagement in Deutschland im Lichte des Freiwilligensurveys 1999 – 2004 – 2009

This contribution will describe the empirical trends regarding civic society in Germany between 1999 and 2009, especially the development of the main issue: volunteering. The basis of the analysis constitutes three volunteer surveys with large representative samples of 14 year olds, which were commissioned by the German federal ministry for family, elderly, women and youth. The participation of the population in civic activities increased over this period, particularly the willingness to undertake public responsibility voluntarily. Between 1999 and 2004, the share of volunteers rose from 34% to 36%. These are people who execute specific activities or offices within the framework of their membership of clubs, organizations or public institutions. This share has, however, stagnated since 2004. The willingness to volunteer has, therefore, not led to an increase in actual volunteering since 2004, especially amongst young people, for whom the share even dropped slightly. In the difficult context of demographic change, social reform and an increased pressure on young people in schools and vocational training and on employees and the unemployed, the level of engagement could at least be maintained in Germany. This is largely due to older people and families, which have tended to take on more tasks in social and health areas and in services for children and young people. In view of the continuance of these societal problems, one can expect the level of voluntary engagement to stay broadly the same in the future.     

“counting” by pigeons: Discrimination of the number of biologically relevant sequential events

Numerical competence has been studied in animals under a variety of conditions, but only a few experiments have reported animals’ ability to detect absolute number. Capaldi and Miller (1988) tested rats’ ability to detect absolute number by using biologically important events—the number of reinforced runs followed by a nonreinforced run—and found that the rats ran significantly slower on the nonreinforced run. In the present experiments, we used a similar procedure. Pigeons were given a sequence of trials in which responding on the first three trials ended in reinforcement but responding on the fourth trial did not (RRRN). When the response requirement on each trial was a single peck (Experiment 1), we found no significant increase in latency to peck on the fourth trial. When the response requirement was increased to 10 pecks (Experiment 2), however, the time to complete the peck requirement was significantly longer on the nonreinforced trial than on the reinforced trials. Tests for control by time, number of responses, and amount of food consumed indicated that the pigeons were using primarily the number of reinforcements obtained in each sequence as a cue for nonreinforcement. This procedure represents a sensitive and efficient method for studying numerical competence in animals.     

Explicit and implicit confidence judgments and developmental differences in metamemory: an eye-tracking approach

In the present study, primary school children’s ability to give accurate confidence judgments (CJ) was addressed, with a special focus on uncertainty monitoring. In order to investigate the effects of memory retrieval processes on monitoring judgments, item difficulty in a vocabulary learning task (Japanese symbols) was manipulated. Moreover, as a first exploratory step to uncover fast and retrieval bound (implicit) monitoring processes that take place before explicit CJ are openly reported, fixation time allocation during recognition and monitoring was recorded with an eye-tracking device. Results revealed developmental progression in uncertainty (but not in certainty) monitoring between the age of 7 and 9 years. Differences in CJ across levels of item difficulty point to a substantial impact of retrieval processes on 9-yr-olds’ but not on 7-yr-olds’ monitoring. Eye-tracking data revealed an overall bias towards medium and high CJ, and confirmed evidence on developmental progression in monitoring skills.     

Biomedical text summarization to support genetic database curation: using Semantic MEDLINE to create a secondary database of genetic information

Objective:

This paper examines the development and evaluation of an automatic summarization system in the domain of molecular genetics. The system is a potential component of an advanced biomedical information management application called Semantic MEDLINE and could assist librarians in developing secondary databases of genetic information extracted from the primary literature.

Methods:

An existing summarization system was modified for identifying biomedical text relevant to the genetic etiology of disease. The summarization system was evaluated on the task of identifying data describing genes associated with bladder cancer in MEDLINE citations. A gold standard was produced using records from Genetics Home Reference and Online Mendelian Inheritance in Man. Genes in text found by the system were compared to the gold standard. Recall, precision, and F-measure were calculated.

Results:

The system achieved recall of 46%, and precision of 88% (F-measure = 0.61) by taking Gene References into Function (GeneRIFs) into account.

Conclusion:

The new summarization schema for genetic etiology has potential as a component in Semantic MEDLINE to support the work of data curators.

Highlights

• Semantic MEDLINE streamlines information retrieval by succinctly expressing the meaning of sometimes complicated text and summarizing output according to a user''s needs.
• Semantic MEDLINE identifies genes noted in biomedical text as associated with a disease process.
• Semantic MEDLINE can potentially simplify secondary database curation.

Implications

• Library information retrieval services can potentially benefit from automated applications such as Semantic MEDLINE.
• Use of such automated applications can facilitate the library''s work in interdepartmental collaborative endeavors, thus reinforcing the library''s core value in its parent institution.

     

Bowels control brain: gut hormones and obesity

Peptide hormones are released from the gastrointestinal tract in response to nutrients and communicate information regarding the current state of energy balance to the brain. These hormones regulate appetite, energy expenditure and glucose homeostasis. They can act either via the circulation at target peripheral tissues, by activation of the vagus nerve or by acting on key brain regions implicated in energy homeostasis such as the hypothalamus and brainstem. This review gives an overview of the main gut hormones implicated in the regulation of food intake and how some of these are being targeted to develop anti obesity treatments.     

Peak muscle activation, joint kinematics, and kinetics during elliptical and stepping movement pattern on a Precor Adaptive Motion Trainer

Kinematic, kinetic, and electromyography data were collected from the biceps femoris, rectus femoris (RF), gluteus maximus, and erector spinae (ES) during a step and elliptical exercise at a standardized workload with no hand use. Findings depicted 95% greater ankle plantar flexion (p = .01), 29% more knee extension (p = .003), 101% higher peak knee flexor moments (p < .001) 54% greater hip extensor moments (p < .001), 268% greater anterior joint reaction force (p = .009), 37% more RF activation (p < .001), and 200 % more ES activation (p <. 001) for the elliptical motion. Sixteen percent more hip flexion (p < .001), 42% higher knee extensor moments (p < .001), and 54% greater hip flexor moments (p = .041) occurred during the step motion. Biomechanical differences between motions should be considered when planning an exercise regimen.     

Best performances by men and women open-water swimmers during the 'English Channel Swim' from 1900 to 2010

Abstract Little research has examined ultra-endurance swimming performances. The 'English Channel Swim', where swimmers have to cover a distance of 32?km between England and France represents a unique long-distance, open-water, sea-swimming challenge, and each year swimmers from all over the world try to succeed in this challenge. The best times in minutes and the nationality of successful men and women swimmers were analysed from 1900 to 2010. A total of 1,533 swimmers (455 women and 1,078 men) from more than 40 countries have successfully completed the 'English Channel Swim'. Great Britain was the country most represented, with 38% of the total, followed by the United States with 20%. Swim speed has increased progressively for both sexes (P??0.05). The results suggest that the performance of women open-water ultra-distance swimmers may be similar to that of men. Further studies investigating anthropometrical and physiological characteristics of open-water ultra-swimmers are needed to compare men's and women's open-water ultra-swim performances.