排序方式: 共有21条查询结果,搜索用时 15 毫秒
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Martina Rinaldi Yasmen Nasr Ghada Atef Fabiano Bini Tiwana Varrecchia Carmela Conte 《European Journal of Sport Science》2018,18(6):796-805
The aims of this study were: (i) to determine kinematic, kinetic, and electromyographic characteristics of Junzuki karate punch in professional karate athletes; (ii) to identify biomechanical parameters that correlate with punch force and lead to a higher punching performance; (iii) to verify the presence of muscle co-activation in the upper limb, trunk, and lower limb muscles. Data were collected from nine experienced karatekas from the Accademia Italiana Karate e Arti Marziali during the execution of the specific punch. Mean punch forces (181.2?N) delivered to the target, the range of motion of both right and left knees (1.13 and 0.82?rad) and right elbow (1.49?rad) joints, and the angles at impact (knee: 0.81 and 0.91?rad; elbow: 1.19?rad) in the sagittal plane were computed. Furthermore, the trunk rotational angular acceleration (63.1?rad?s?2), force related to the lower limbs (550.2 and 425.1?N), and co-activation index for the upper limb (36.1% and 34.7%), trunk (24.5% and 16%), and lower limbs (16.0% and 16.1%) muscles were evaluated bilaterally. Significant positive correlations were found between the punch force and both right and left knee flexion at the instant of impact and right and left leg force. Significant negative correlation was found between the punch force and maximum trunk angular acceleration. Significant differences (p?=?.03) in the co-activation index among the upper limb, trunk, and lower limbs muscles highlighted a rostro-caudal gradient on both body sides. This research could be of use to performers and coaches when considering training preparations. 相似文献
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Mohamad Osmani Vishanth Weerakkody Nitham M. Hindi Rajab Al‐Esmail Tillal Eldabi Kawaljeet Kapoor 《Tertiary Education and Management》2013,19(4):367-379
Graduate employability has become an issue since there are broad mismatches between the acquired graduate skills from university and the required skills by employers. While previous researches have outlined the salient skills that need to be embedded in graduate education, to date no studies have attempted to methodically identify and synthesize the literature on graduate attributes. In this paper a total of 39 relevant studies on graduate skills and attributes in the subject areas of business and management, accounting, and computer science were extracted from Scopus® (database). This revealed a total of 53 graduate attributes, with some being highly used, such as communication, teamwork, problem solving, technological skills, creativity, interpersonal skills, leadership skills, self-management and flexibility/adaptability. The majority of studies used a quantitative survey method to collect and rank graduate attributes, and Australia emerged as the most active country in researching the domain. 相似文献
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Janet M. Shaw Nadia M. Hamad Tanner J. Coleman Marlene J. Egger Yvonne Hsu Robert Hitchcock 《Journal of sports sciences》2013,31(12):1176-1185
AbstractStrenuous physical activity has been linked to pelvic floor disorders in women. Using a novel wireless intra-vaginal pressure transducer, intra-abdominal pressure was measured during diverse activities in a laboratory. Fifty-seven women performed a prescribed protocol using the intra-vaginal pressure transducer. We calculated maximal, area under the curve and first moment of the area intra-abdominal pressure for each activity. Planned comparisons of pressure were made between levels of walking and cycling and between activities with reported high pressure in the literature. Findings indicate variability in intra-abdominal pressure amongst individuals doing the same activity, especially in activities that required regulation of effort. There were statistically significant differences in maximal pressure between levels of walking, cycling and high pressure activities. Results for area under the curve and first moment of the area were not always consistent with maximal pressure. Coughing had the highest maximal pressure, but had lower area under the curve and first moment of the area compared to most activities. Our data reflect novel findings of maximal, area under the curve and first moment of the area measures of intra-abdominal pressure, which may have clinical relevance for how physical activity relates to pelvic floor dysfunction. 相似文献
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Sanchez Eric Paukovics Elsa Cheniti-Belcadhi Lilia El Khayat Ghada Said Bilal Korbaa Ouajdi 《Education and Information Technologies》2022,27(4):4501-4520
Education and Information Technologies - Digital and innovation competencies are nowadays highly required for students and faculty members in higher education institutions. We therefore need... 相似文献
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El-Sayed Atlam Ghada ElmarhomyAuthor VitaeKazuhiro MoritaAuthor Vitae Masao FuketaAuthor VitaeJun-ichi AoeAuthor Vitae 《Information processing & management》2006
With increasing popularity of the Internet and tremendous amount of on-line text, automatic document classification is important for organizing huge amounts of data. Readers can know the subject of many document fields by reading only some specific Field Association (FA) words. Document fields can be decided efficiently if there are many FA words and if the frequency rate is high. This paper proposes a method for automatically building new FA words. A WWW search engine is used to extract FA word candidates from document corpora. New FA word candidates in each field are automatically compared with previously determined FA words. Then new FA words are appended to an FA word dictionary. From the experiential results, our new system can automatically appended around 44% of new FA words to the existence FA word dictionary. Moreover, the concentration ratio 0.9 is also effective for extracting relevant FA words that needed for the system design to build FA words automatically. 相似文献
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Gholamreza Mojarradi Esmail Karamidehkordi 《Journal of Higher Education Policy & Management》2016,38(2):183-195
This paper presents an analysis of the factors influencing the practical training quality of agricultural higher education programmes from the senior students’ perspective. The study was conducted in two public universities located in the north-west of Iran using a cross-sectional survey and structured interviews with a randomised sample of 254 agricultural senior students. The students reported that they received low-quality practical training throughout their agricultural courses. In order for there to be an improvement in the quality of practical training, three elements are essential: active participation of academic staff, effective inter-organisational communication with private and public institutions, and active participation of students in the curriculum. Establishing a strong linkage between universities and relevant institutions could provide the required facilities and an effective learning environment for the students through internship opportunities outside universities and would prepare them for the labour market. 相似文献
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