This article deals with kinematic and kinetic conditions in volleyball attack and identifies loads in the shoulder joint. Joint angles and velocities of individual segments of upper limb were measured with the use of the motion capture system XSENS. Muscle forces and loads in skeletal system were calculated by means of mathematical model elaborated in AnyBody system. Spikes performed by players in the best and worst way were compared with each other. The relationships were found between reactions in shoulder joint and flexion/extension, abduction/adduction and rotation angles in the same joint and flexion/extension in the elbow joint. Reactions in shoulder joint varied from 591 N to 2001 N (in relation to body weight [BW] 83–328%).
The analysis proved that hand velocity at the moment of the ball hit (which varied between 6.8 and 13.3 m s–1) influences on the value of reaction in joints, but positions of individual segments relative to each other are also crucial. It was also proved in objective way, that position of the upper limb during spike can be more or less harmful assuming that bigger reaction increases possibility of injury, what can be an indication for trainers and physiotherapists how to improve injury prevention. 相似文献
The quality of educational processes with children of preschool age and long-term educational outcomes are largely related to the work quality of teachers. Lifelong learning and professional development, as predictors of quality, need to be regarded as an ongoing task for kindergarten teachers. Findings of an empirical study of Croatian kindergarten teachers’ views (N = 388) on professional development point to a link between teachers’ intrinsic motivation and their professional development. Motivation explains 46.87% of the variance Personal commitment to professional development. A slight positive correlation was found between the level of formal education and the frequency of professional development (r = .216, p < .01). Although the level of education of kindergarten teachers is not a good independent predictor, it affects readiness to self-fund professional development (p < .01). As for the significance of conferences as a form of professional development, participants of the study identified them as an effective opportunity (M = 4.68, SD = .52), promoting both quality practices (M = 4.69, SD = .54) and exchange of experiences (M = 4.68, SD = .56). The length of participants’ professional work experience affects their assessment of the significance of practitioners’ networking as a way of improving the quality of everyday practices (F = 1.43, p < .05). 相似文献
The article presents basic information on the strand of psycho-pedagogy of creativity—a unique perspective on creativity teachers’ education in Europe and the world. Psycho-pedagogy of creativity is a major in pedagogy studies, run in Poland, at the Warsaw Academy of Special Education. Our aim is to educate specialists who are open, sensitive and well prepared content-wise in identifying and developing children's and youth's creative potential. We also aim at introducing the studies that function in a wider social context, and presenting the situation of Poland after systemic transformation. It seems that information of this type may prove interesting to researchers and practitioners that deal with education of creativity. 相似文献
Purpose: This study attempts to close the research gap created by the fact that existing studies neglect the problem of how effectively agricultural professors from different European countries communicate. The aim is to identify similarities and differences in the numbers of agricultural professors perceived by students as engaging in verbal and nonverbal immediacy communication.
Methodology: An online survey was conducted among students of agricultural universities from Austria, Slovenia and Albania.
Findings: The results show that professors of agriculture from Austria, Slovenia and Albania should generally not be satisfied with their own communication patterns and should thus try to improve their communication. The result also reveals cultural differences in the shares of agriculture professors employing different communication patterns in Austria, Slovenia and Albania. Compared to Austrian and Slovenian students, their Albanian peers perceive that most of their professors use nonverbal immediacy communication. According to Austrian students, the majority of their professors use verbal immediacy. On the contrary, Albanian students assessed that some of their professors employ verbal immediacy.
Practical Implications: The results show the professors of agriculture should improve the way they communicate to students. In particular, the Albanian professors should improve their verbal communication especially in terms of providing timely and quality feedback to students.
Theoretical implications: The study reveals differences in immediacy communication among countries (Austria, Slovenia and Albania) which the scientific literature considers to have a high-context culture.
Originality/Value: Given that no study has yet examined how students perceive professors’ communication in different European countries, this research helps understand the characteristics of agricultural professors’ communication. 相似文献
Brain drain has been a long‐lasting phenomenon. It existed in the former Yugoslavia, and was affected by various factors, from political through economic ones to the attractive offers for advanced studies and work in scientific institutions or firms in developed countries. Some ad‐hoc analyses were made concerning individual groups or periods, but there was no systematic monitoring and no complete and all‐inclusive data. It is however possible to draw a picture showing trends in the – mostly one‐way – movement towards highly developed countries.
Therefore, the current study has a mosaic character, which – we hope – shall throw some light and try to explain brain drain in the academic circles of Serbia and Montenegro (former SFRY). As the Republic of Serbia represents the largest component part (about 90 percent), most of the data is about Serbia. 相似文献
ABSTRACTThe aim of this research was to examine the levels of burnout syndrome dimensions in special education teachers and correlations with some socio-demographic characteristics, job characteristics, and levels of assertiveness. The research included 225 special education teachers from Serbia (82% were women, 18% were men, with the average age of 42.51 ± 9.23 years). Research instruments included Maslach Burnout Inventory, Rathus Assertiveness Schedule, and a socio-demographic questionnaire. There were differences in all burnout dimensions in relation to types of students’ special needs. Higher levels of burnout symptoms were observed in teachers working with children with motor skill disorders. The assertiveness scores had a significant negative correlation with emotional exhaustion and depersonalisation, and a positive correlation with a lack of accomplishment. The results obtained may help in the planning of the adequate preventative measures for improving the mental health of those professionals. 相似文献
This article deals with the problems of forming a scientific system for adult education. The first part contains different concepts of sciences of education in developed countries, with a special emphasis on the difference between pedagogy as ‘practical theory’ and the sciences of education than can withstand meta‐scientific criteria. This is followed by a survey of the educological system of the knowledge of education, and the scientific and non‐scientific knowledge of adult education are contrasted. To enable us to distinguish unambiguously between scientific and non‐scientific knowledge the survey contains some major criteria for determining whether a discipline is a science or not. In this context andragogy, as well as pedagogy, are defined as ‘technological’ disciplines with the task of applying the principles discovered by the sciences of adult education: the educational psychology of adults, the sociology of adult education, the economics of adult education and the educational anthropology. In other words, andragogy is the ‘praxiology of adult education’, i.e. the science of applying scientific knowledge about adult education in the practice of that education. Andragogy could become ‘the general science of adult education’ and acquire a supra‐technological character if it grew into a science of the effectiveness of systems of adult education. In that case andragogy would study the interaction between the elements of the system as well as the interaction between these elements and the subsystems of the educational environment. 相似文献
Following a tour d'horizon of the development of science and science policy in former Yugoslavia, the author focuses on the application of science to development in this country after the Second World War. In particular, she examines the role of computer science in which Yugoslav scientists developed much endogenous capacity. The events following the break-up of Yugoslavia led to the isolation and the emigration of scientists, academics, and graduate students, particularly from Serbia, in the reduced Yugoslavia that remained after the break-up. During the period of sanctions, Yugoslavia was denied even the right to participate in TEMPUS projects that were underway. The TEMPUS III projects in which Yugoslavia can participate are not very helpful in rebuilding the scientific capacity of the country. The country needs assistance, possibly best given through twinning arrangements with universities in other countries, to rebuild its scientific capacity. Economic aid to rebuild infrastructures is also needed. Only when talented young scientists can look forward to a future at home will they no longer seek to emigrate. 相似文献
