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1.
This paper investigates the attributes of Corporate Social Responsibility (CSR) programmes in sport and their potential for sustainable community development. The gap between sport-related CSR and community development needs to be filled by shifting attention to the capacity building of communities. While the neoliberal foundations of CSR are recognized, it is essential to understand the ideological varieties driving CSR that can enable inclusiveness and collaboration in fostering community benefits of CSR programmes. The paper contributes to the literature on CSR in sport advancing the discourse, and sets the stage for a community-based framework for research: (1) related to sport as a tool for social change; (2) exploring the relationship of organizational motives, stakeholder engagement and CSR programme design/implementation; and (3) evaluating the perceived benefits of CSR programmes, and the extent to which these can help achieve sustainable community development. 相似文献
2.
Vassilios Gourgoulis Alexia Boli Nikolaos Aggeloussis Panagiotis Antoniou Argyris Toubekis Georgios Mavromatis 《Journal of sports sciences》2015,33(7):696-712
The aim of this study was to assess the effect of the hand’s acceleration on the propulsive forces and the relative contribution of the drag and lift on their resultant force in the separate phases of the front crawl underwater arm stroke. Ten female swimmers swam one trial of all-out 25-m front crawl. The underwater motion of each swimmer’s right hand was recorded using four camcorders and four periscope systems. Anatomical landmarks were digitised, and the propulsive forces generated by the swimmer’s hand were estimated from the kinematic data in conjunction with hydrodynamic coefficients. When the hand’s acceleration was taken into account, the magnitude of the propulsive forces was greater, with the exception of the mean drag force during the final part of the underwater arm stroke. The mean drag force was greater than the mean lift force in the middle part, while the mean lift force was greater than the mean drag force in the final part of the underwater arm stroke. Thus, swimmers should accelerate their hands from the beginning of their backward motion, press the water with large pitch angles during the middle part and sweep with small pitch angles during the final part of their underwater arm stroke. 相似文献
3.
George Giatsis Vassilios Panoutsakopoulos Iraklis A. Kollias 《Journal of sports sciences》2018,36(9):997-1008
The purpose of this study was to investigate the possible arm swing effect on the biomechanical parameters of vertical counter movement jump due to differences of the compliance of the take-off surface. Fifteen elite male beach-volleyball players (26.2 ± 5.9 years; 1.87 ± 0.05 m; 83.4 ± 6.0 kg; mean ± standard deviation, respectively) performed counter movement jumps on sand and on a rigid surface with and without an arm swing. Results showed significant (p < .05) surface effects on the jump height, the ankle joint angle at the lowest height of the body center of mass and the ankle angular velocity. Also, significant arm swing effects were found on jump height, maximum power output, temporal parameters, range of motion and angular velocity of the hip. These findings could be attributed to the instability of the sand, which resulted in reduced peak power output due to the differences of body configuration at the lowest body position and lower limb joints’ range of motion. The combined effect of the backward arm swing and the recoil of the sand that resulted in decreased resistance at ankle plantar flexion should be controlled at the preparation of selected jumping tasks in beach-volleyball. 相似文献
4.
Vassilios Gourgoulis Nickos Aggelousis Giorgos Mavromatis Athanasios Garas 《Journal of sports sciences》2013,31(8):643-652
We investigated the linear kinematics and the change in energy of the barbell and the angular kinematics of the trunk and leg during the snatch technique of 12 elite male Greek weightlifters under competitive conditions after the new weight classification. Two S-VHS cameras operating at 60 Hz were used to record the lifts. The spatial coordinates of selected points were calculated using the direct linear transformation procedure; after digital filtering of the raw data, the angular displacements and angular velocities were calculated for the hip, knee and ankle joints. The following variables were also calculated for the barbell: vertical and horizontal displacement, vertical linear velocity and acceleration, external mechanical work and power output. The results revealed that all weightlifters flexed their knees during the transition phase, independently of their weight category. This indicates that the athletes use the elastic energy produced during the stretch–shortening cycle to enhance their performance. In nine athletes, we found that the barbell trajectory did not cross a vertical reference line that passed through the initial position of the barbell. The vertical linear velocity of the barbell was increased continuously from the beginning of the movement until the second maximum extension of the knee joint, with no notable dip being observed. Regarding the change in energy of the barbell, we found that the mechanical work for the vertical displacement of the barbell in the first pull was significantly greater than the mechanical work in the second pull. In contrast, the estimated average mechanical power output of the athletes during the vertical displacement of the barbell was significantly greater in the second pull than in the first pull. We conclude that the major elements of the snatch technique of elite Greek weightlifters have not been aff ected by the new weight classification. 相似文献
5.
This paper highlights the framework and discusses the results of an action research network which aimed to promote academic access in two general educational settings within which a pupil with blindness and a deaf pupil were educated respectively. The persons involved in this collaborative scheme were general teachers, a school counsellor, academic staff and student teachers. The findings of the study indicate that the implementation of the action research network resulted in the development of inclusive and collaborative thinking and the adoption of relevant teaching practices which promoted the children's access to the curriculum and supported the teachers' and student teachers' professional development. The outcomes of this action research network raise concerns about the access and the status of membership of children with special needs in general educational classroom and provide insights for the pivotal role of action research in understanding educational contexts and situations from a number of different perspectives. 相似文献
6.
Maria Giallousi Vassilios Gialamas Nicolas Spyrellis Evangelia A. Pavlatou 《International Journal of Science and Mathematics Education》2010,8(4):761-782
This study describes the development and validation of a Greek-language instrument that can be used to assess grade 10 students'
perceptions of their chemistry classroom environment as a means of showing differences between chemistry learning environments
in Greece (Attica) and Cyprus. The development of the instrument was based on available learning environment questionnaires.
The questionnaire was administered to 1,394 students from 49 chemistry classes in Attica, and the resulting data were analyzed
to explore the reliability and the validity of the new instrument. The validated questionnaire was administered to 225 students
from 15 classes in urban areas of Cyprus. The data analyses supported the questionnaire's internal consistency, discriminant
validity, and ability to differentiate between classrooms. Effect sizes and independent samples t test analyses revealed differences between the two samples. Cypriot students viewed their chemistry classroom environment
more favorably than did the Attica students. A possible cause for this difference could be the knowledge-centered aspect of
the grade 10 chemistry curriculum in Greece compared to the corresponding tool-instrumental knowledge curriculum in Cyprus. 相似文献
7.
Apostolos S. Theodorou Vassilios Panoutsakopoulos Timothy A. Exell Polyxeni Argeitaki Giorgos P. Paradisis Athanasia Smirniotou 《Journal of sports sciences》2017,35(4):346-354
The aim of this study was to investigate the relative influence of step length (SL) and step frequency (SF) on step velocity (SV) during the approach run of high-level long jumpers and to quantify the asymmetry of these step characteristics. Spatiotemporal data of the approach run were collected during national competition from 10 long jumpers (age 26.2 ± 4.1 years, height 1.84 ± 0.06 m, mass 72.77 ± 3.23 kg, personal best performance 7.96 ± 0.30 m). Analyses were conducted for total approach, early approach and late approach. For the total approach 4/10 athletes were SF reliant and 6/10 athletes favoured neither characteristic. At the early approach, 3/10 athletes were SF reliant and 7/10 athletes favoured neither. During late approach 2/10 athletes demonstrated SL reliance, 7/10 athletes were SF reliant and 1/10 athletes favoured neither. Four athletes displayed significant asymmetry for SL and three for SF. However, no athletes demonstrated significant asymmetry for SV indicating that the asymmetrical demands of take-off do not have a marked influence on step characteristic asymmetry, probably due to the constraints of the event. Consideration should be given to the potentially conflicting demands between limbs for individual athletes. 相似文献
8.
Vassilios Dagdilelis Maya Satratzemi Georgios Evangelidis 《Education and Information Technologies》2004,9(2):159-173
In Greece, the development of the teaching of Information Technology (IT) in schools has been greatly influenced by the rapid development of technology, making IT literacy a priority for all individuals. Consequently, the teaching of algorithms and programming, with the ulterior motive of teaching modeling as well as problem solving, has been greatly limited in Secondary Education. However, we strongly believe that algorithms and programming constitute an important intellectual tool and should be included in basic education. In any case, both the research literature findings, as well as, our own experience confirm the fact that novice programmers come up against many mental obstacles in their attempts to understand the functioning of programs or the construction of algorithms. In order to deal with these difficulties and successfully teach the elementary concepts of algorithms and programming, we have developed didactic scenarios, which are based on specially designed educational software. In conjunction with this, we are attempting to develop a program for the systematic training of those students who will become IT teachers in Secondary or Primary Education. The most significant findings of our research are summarized as follows: (a) The development of educational software and its experimental use in the teaching process allow us to formulate several general rules related to the specific didactic characteristics, which these environments should include. (b) Educational software is effective only when it is incorporated within the framework of the didactic scenarios that the teacher organizes and which are supported by the software. (c) Teachers do not spontaneously use educational software in the context of this rationale. Therefore, specific training is required so that they adopt and use such software in didactic scenarios. 相似文献
9.
Vassilios C. Vescoukis Symeon Retalis Dimosthenis Anagnostopoulos 《Interactive Learning Environments》2013,21(3):169-191
For a long time on-the-job training has been considered as the single point of contact of technical education with the real world job market. Indeed, traditional on-the-job training activities are of great educational value and complement uniquely any classroom-based learning activity. However, it has been observed that several obstacles arise when integrating on-the-job training with traditional learning and that new network-based tools can be used to improve the situation. Following this concept, in this paper we introduce a network-assisted educational structure for business simulation activities which can be considered as an alternative or a complement to on-the-job training activities in technical professional education. Business Simulation Activities are based on the execution of business scenarios in a controlled educational environment with support by network tools. A simulation of the real world business environment is created and virtual companies are established in order to participate in a virtual marketplace using network-based learning support and aiming to provide on-the-job experience without the shortcomings of traditional on-the-job training. An operational structure, network distribution, implementation issues, as well as some experience from a pilot implementation of the concept, are presented in this paper. 相似文献
10.
Vassilios C. Hombas 《Teaching Statistics》1991,13(3):87-89
Using as a starting point pre-existing remarks on the discrepancies arising in calculations of statistical quantities from certain formulae because of errors in the means, or the choice of the appropriate formula, the author proposes a scheme by which teachers and students can overcome these difficulties and achieve error-free results. 相似文献