The location of the tibial accelerometer does influence impact acceleration parameters during running

Tibial accelerations have been associated with a number of running injuries. However, studies attaching the tibial accelerometer on the proximal section are as numerous as those attaching the accelerometer on the distal section. This study aimed to investigate whether accelerometer location influences acceleration parameters commonly reported in running literature. To fulfil this purpose, 30 athletes ran at 2.22, 2.78 and 3.33 m · s^–1 with three accelerometers attached with double-sided tape and tightened to the participants’ tolerance on the forehead, the proximal section of the tibia and the distal section of the tibia. Time-domain (peak acceleration, shock attenuation) and frequency-domain parameters (peak frequency, peak power, signal magnitude and shock attenuation in both the low and high frequency ranges) were calculated for each of the tibial locations. The distal accelerometer registered greater tibial acceleration peak and shock attenuation compared to the proximal accelerometer. With respect to the frequency-domain analysis, the distal accelerometer provided greater values of all the low-frequency parameters, whereas no difference was observed for the high-frequency parameters. These findings suggest that the location of the tibial accelerometer does influence the acceleration signal parameters, and thus, researchers should carefully consider the location they choose to place the accelerometer so that equivalent comparisons across studies can be made.     

Criminal justice education in relation to law school expectation: A failure of confidence

This paper discusses the findings from a survey of admissions officers at law schools in the United States. Deans of Admission (N=119) were asked a variety of questions pertaining to how the undergraduate criminal justice major is perceived in relation to the adequacy of the academic preparation it provides for individuals applying and/or currently attending law school. The findings suggest that the criminal justice major is not perceived as adequate preparation for law school education by the Deans of Admission. Results are discussed within the context of the criminal justice curricula standards recommended by the academic review committee of the Academy of Criminal Justice Sciences.     

Changing the teaching/learning procedures in physics for agricultural engineering. A case study

The subject ‘Physical Fundamentals of Engineering’ for agricultural engineers in the University of Extremadura has long had high rates of students not attending classes, not presenting for examinations and, finally, failing the subject. During the 2007 and 2008 courses, the teaching/learning procedures were strongly modified. Analysis of the proportion of students taking final examinations and of the final marks shows that the new procedure leads to a satisfactory progress in most of the objectives, including a general improvement in their marks and pass rates. In particular, it was found that the new procedure needs to be maintained by the teachers for at least two courses for the greatest success.     

Garden-Based Learning: An Experience With “At Risk” Secondary Education Students

The reengagement of disenchanted secondary students is one of the priorities of the educational system. Over a six-year period (2003–2004 to 2008–2009), 63 disruptive and low-performance secondary school students were integrated into a two-year garden-based learning program, which took place in southeastern Spain. This article intends to assess the quantitative and qualitative changes in both academic outcomes and personal behavior brought about by the experience. Results show that school failure decreased substantially, while the dropout rate was reduced from an initial 30% to zero in some years. Disruptive episode control improved significantly in the classroom, where teachers observed a decided improvement in students' skills, self-esteem, and self-confidence.     

Effect of custom-made and prefabricated insoles on plantar loading parameters during running with and without fatigue

Abstract

Controversy exists whether custom-made insoles are more effective in reducing plantar loading compared to prefabricated insoles. Forty recreational athletes ran using custom-made, prefabricated, and the original insoles of their running shoes, at rest and after a fatigue run. Contact time, stride rate, and plantar loading parameters were measured. Neither the insole conditions nor the fatigue state modified contact time and stride rate. Addressing prevention of running injuries, post-fatigue loading values are of great interest. Custom-made insoles reduced the post-fatigue loading under the hallux (92 vs. 130 kPa, P < 0.05), medial midfoot (70 vs. 105 kPa, P < 0.01), and lateral midfoot (62 vs 96 kPa, P < 0.01). Prefabricated insoles provoked reductions in post-fatigue loading under the toes (120 vs. 175 kPa, P < 0.05), medial midfoot (71 vs. 105 kPa, P < 0.01), and lateral midfoot (68 vs. 96 kPa, P < 0.01). Regarding both study insoles, custom-made insoles reduced by 31% and 54% plantar loading under the medial and lateral heel compared to the prefabricated insoles. Finally, fatigue state did not influence plantar loading regardless the insole condition. In long-distance races, even a slight reduction in plantar loading at each foot strike may suppose a significant decrease in the overall stress experienced by the foot, and therefore the use of insoles may be an important protective mechanism for plantar overloading.     

Identification of histological threshold concepts in health sciences curricula: Students' perception

Students' metacognitive skills and perceptions are considered important variables for high-quality learning. In this study, students' perceptions were used to identify histological threshold concepts (integrative, irreversible, transformative, and troublesome) in three health sciences curricula. A specific questionnaire was developed and validated to characterize students' perceptions of histological threshold concepts. A sample of 410 undergraduate students enrolled in the dentistry, medicine, and pharmacy degree programs participated in the study. Concepts assessed in the study were clustered to ten categories (factors) by exploratory and confirmatory factor analysis. Concepts linked to tissue organization and tissue functional states received the highest scores from students in all degree programs, suggesting that the process of learning histology requires the integration of both static concepts related to the constituent elements of tissues and dynamic concepts such as stem cells as a tissue renewal substrate, or the euplasic, proplasic and retroplasic states of tissues. The complexity of integrating static and dynamic concepts may pose a challenging barrier to the comprehension of histology. In addition, several differences were detected among the students in different degree programs. Dentistry students more often perceived morphostructural concepts as threshold concepts, whereas medical students highlighted concepts related to two-dimensional microscopic identification. Lastly, pharmacy students identified concepts related to tissue general activity as critical for the comprehension and learning of histology. The identification of threshold concepts through students' perceptions is potentially useful to improve the teaching and learning process in health sciences curricula.     

2011中网宣传片幕后花絮：我就在这里

2011年3月24日,ATP大师赛与WTA一级赛正在阳光之城迈阿密火热进行中。在距离比赛场地不过5分钟车程的利兹·卡尔顿酒店内,一个供拍摄使用的专业摄影棚已经搭建完成,著名的网球摄影师罗·安吉与凯利·巴克正在调试器材,难道赛场之外也将有网球的故事发生？     

Ageism at university: A comparative analysis of young and older adult students

ABSTRACT

This study undertakes a comparative analysis of the negative stereotypes of older persons described by young and older adult university students at the University of Castilla-La Mancha. This study is innovative in that it compares three analytical perspectives: the perception of young students (18–27 years); the perception of older adult students (50 years and above) regarding older persons (hetero-stereotypes); and, finally, the perception of older adult students with regard to themselves as part of the group of older adult students (self-stereotypes).

The sample is made up of 460 young students and 148 older adult students who completed the Questionnaire on Negative Ageing Stereotypes (QNAS), comprising three dimensions: health; character and personality; and social relationships and motivation. A statistical analysis was subsequently carried out using the independent samples t-test in the IBM Statistics 19.0 program.

Of note among the principal results is the low level of negative stereotypes reported among the groups studied, as well as the existence of significant differences in their means, which indicate that the negative stereotypes of the groups differed. The most stereotyped of the dimensions analyzed was character and personality. In contrast, the least-stereotyped dimension was that of social relationships and motivation. Finally, the dimension of health occupied an intermediate position. With regard to the three perspectives studied, the older adult group (hetero-stereotypes) was the most stereotyped, followed by the young students and, finally, the older adult students with reference to self-stereotypes.     

Patología general de la evaluación educativa

Resumen

El autor plantea en este artículo los problemas que entrañan los procesos de la evaluación institucional educativa en sus diversos niveles (evaluación del alumno, de los Centros, de los programas y Reformas…) y desde diferentes perspectivas (ideológica, política, ética, didáctica, técnica…). Analiza diversas disfunciones y desenfoques de la evaluación escolar, tanto por atrofia como por hipertrofia de algunos de sus elementos, como por la desvirtuación de su práctica y de su significado.