Effects of upper and lower body wearable resistance on spatio-temporal and kinetic parameters during running     

Grace A. Couture  Kim D. Simperingham  John B. Cronin  Anna V. Lorimer  Andrew E. Kilding  Paul Macadam 《Sports biomechanics / International Society of Biomechanics in Sports》2020,19(5):633-651

ABSTRACT

Wearable resistance training involves added load attached directly to the body during sporting movements. The effects of load position during running are not yet fully established. Therefore, the purpose of this research was to determine spatio-temporal and kinetic characteristics during submaximal running using upper, lower and whole-body wearable resistance (1–10% body mass (BM)). Twelve trained male runners completed eight 2-min treadmill running bouts at 3.9 m/s with and without wearable resistance. The first and last bouts were unloaded, while the middle 6 were randomised wearable resistance conditions: upper body (UB) 5% BM, lower body (LB) 1%, 3%, 5% BM and whole body (WB) 5%, 10% BM. Wearable resistance of 1–10% BM resulted in a significant increase in heart rate (5.40–8.84%), but minimal impact on spatio-temporal variables. Loads of 5% BM and greater caused changes in vertical stiffness, vertical and horizontal force, and impulse. Functional and effective propulsive force (2.95%, 2.88%) and impulse (3.40%, 3.38%) were significantly (p < 0.05) greater with LB5% than UB5%. Wearable resistance may be used to increase muscular kinetics during running without negatively impacting spatio-temporal variables. The application of these findings will vary depending on athlete goals. Future longitudinal studies are required to validate training contentions.  相似文献   

Implementing the SENCo system in Hong Kong: an initial investigation     

Kim Fong Poon‐McBrayer 《British Journal of Special Education》2012,39(2):94-101

Monitoring mechanisms of support services for students with special needs can be broadly classified as external and internal. Resembling the UK model, Hong Kong has adopted an internal mechanism through the establishment of the SENCo post. This investigation, written by Dr Kim Fong Poon‐McBrayer, of the Hong Kong Institute of Education, explores how SENCos understand the policy intention of their roles, what the role entails in practice, and what work conditions are usual for participants. This qualitative study involved semi‐structured interviews to probe SENCos' experiences. Findings reveal that SENCos assume management but not leadership roles in special educational needs provision. Policy deviation, and the prevalent autocratic leadership style across schools in Hong Kong, are the key contributors to conditions seen as unsatisfactory, of overwork, of the inadequate planning of provision, and of the need for professional and clerical support. It is concluded that policymakers can make improvements through implementing practical training in participatory governance for headteachers, developing a training model for SENCos, and providing SENCos with additional personnel resources. Further studies to gain a fuller picture of the organisational contexts are recommended.  相似文献   

Assessing task-orientation potential in primary science textbooks: Toward a new approach     

Katja N. Andersen 《科学教学研究杂志》2020,57(4):481-509

Task orientation is currently a prominent concept under discussion in primary school didactics. It focuses on tasks along which pupils acquire competences on distinct levels of competence. The qualitative empirical study TAPSE (Textbook Analysis in Primary Science Education) pursues the question which conception of task orientation is present in current textbooks in primary science education. The study follows two foci: (a) The introduction of a new category system for the analysis of the task-orientation potential of tasks, based on the further development of existing category systems for analyzing tasks; and (b) the analysis of 994 task statements in science textbooks with respect to the didactic quality of their task orientation. The sample included nine primary science textbooks, four from Germany, and five from Luxembourg. Textbooks were selected from the most frequently sold series in the respective country. All tasks of the textbooks were analyzed deductively and inductively by four coders in three steps: (a) Identifying tasks with task-oriented potential; (b) itemizing different types of task-orientation potential; and (c) comparing the textbooks with respect to country- and period-specific manifestations of task orientation. Analysis indicated that (a) there are few tasks which meet the criteria of task orientation; (b) distinct types of task orientation can be generated, among which implicit forms dominate; and (c) differences occur in the characteristics of task orientation between older and newer textbooks as well as between German and Luxembourgish ones. Central points of discussion ensue from this: The need to develop models for social and cognitive activation for tasks, challenges for professional development for teachers, and support for pupils—in particular high achieving heterogenization.  相似文献   

The Impacts of Library Services on Interlibrary Loan Requests Canceled due to Local Availability     

Hae Min Kim  John Wiggins  Lynda Sadusky 《Journal of Interlibrary Loan, Document Delivery & Electronic Reserve》2019,28(5):115-128

Abstract

Interlibrary loan (ILL) services receive requests for resources that are available locally and form a major portion of canceled requests. The purpose of this study is to examine the relationship between requests canceled due to local availability and three aspects to identify impacts on ILL. The authors explored library service aspects such as collection format, the link resolver knowledge base, and discovery system functionality for potential influence on requests for locally available resources. Quantitative methods were used to identify evidence of different aspects’ impact through analysis of ILL borrowing request data. The most important finding was that the discovery system had impact on ILL services by improving retrievability of locally available resources published recently. The results suggest that a modern discovery system can efficiently provide more relevant results sourced from a carefully curated set of authoritative resources, save users’ time to access available materials, and reduce library staff members’ time and effort. This study will be helpful to libraries through its analysis of library services that impact the cancelation of ILL requests due to local availability and how those services may influence service improvement.  相似文献   

Challenging the invisibility of Asian Americans in education     

Betina Hsieh  Jung Kim 《Review of Education, Pedagogy & Cultural Studies》2020,42(2):95-103

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Using computer vision techniques on Instagram to link users’ personalities and genders to the features of their photos: An exploratory study     

Yunhwan Kim  Jang Hyun Kim 《Information processing & management》2018,54(6):1101-1114

Instagram and other photo-based social networking sites have emerged as a popular medium. Previous studies mainly focused on social media texts, but the current study deals with the relationships between the characteristics of Instagram users and the features of their photos. The Big Five personality traits and gender were employed as the variables for user characteristics. Content category, the number of faces, the emotions on the faces, and the pixel derived features were employed as the variables for photo characteristics. An online survey of 179 university students was conducted to measure user characteristics, and 25,394 photos in total were downloaded and analyzed from the respondents’ Instagram accounts. Results suggested that content category is associated with extraversion and gender of users. The number of faces is associated with extraversion, agreeableness, and openness of users. Extraversion, agreeableness, and openness of users were partly associated with emotions expressed on the faces in their photos. Correlations were observed among some pixel features and extraversion, agreeableness, conscientiousness, and gender of users. It was also observed that the Big Five personality traits, except for gender, can be predicted by above variables. Implications and limitations are discussed and suggestions for future research are suggested.  相似文献   

Analyzing the discriminative attributes of products using text mining focused on cosmetic reviews     

Sung Guen Kim  Juyoung Kang 《Information processing & management》2018,54(6):938-957

Consumers evaluate products through online reviews, in addition to sharing their product experiences. Online reviews affect product marketing, and companies use online reviews to investigate consumer attitudes and perceptions of their products. However, when analyzing a review, it is often the case that specific contexts are not taken into consideration and meaningful information is not obtained from the analysis results. This study suggests a methodology for analyzing reviews in the context of comparing two competing products. In addition, by analyzing the discriminative attributes of competing products, we were able to derive more specific information than an overall product analysis. Analyzing the discriminative attributes in the context of comparing competing products provides clarity on analyzing the strengths and weaknesses of competitive products and provides realistic information that can help the company's management activities. Considering this purpose, this study collected a review of the BB Cream product line in the cosmetics field. The analysis was sequentially carried out in three stages. First, we extracted words that represent discriminative attributes by analyzing the percentage difference of words. Second, different attribute words were classified according to the meaning used in the review by using latent semantic analysis. Finally, the polarity of discriminative attribute words was analyzed using Labeled-LDA. This analysis method can be used as a market research method as it can extract more information than a traditional survey or interview method, and can save cost and time through the automation of the program.  相似文献   

The present state and future trends of blended learning in workplace learning settings across five countries     

Kyong-Jee Kim  Curtis J. Bonk  Ya-Ting Teng 《Asia Pacific Education Review》2009,10(3):299-308

This article reports survey findings related to the current status and future trends of blended learning in workplace learning settings from diverse cultures. This particular survey was conducted of 674 training and human resource development professionals from five different countries, mostly from the Asia-Pacific region (i.e., China, South Korea, Taiwan, United States, and the United Kingdom). The results show that blended learning will become a popular delivery method in the future of workplace learning not only in Western countries but also in Asian countries. Still, the respondents indicated that there were several barriers to blended learning; one of the most noticeable issues was their lack of understanding of blended learning. There is a pressing need, therefore, to provide practitioners with guidance on how to implement blended learning in their organizations. Additionally, among the countries surveyed, the results of the present study revealed that there were significant differences in the current level of adoption of blended learning, the respondents’ attitudes toward and perceptions of blended learning, and the content areas taught by blended learning. Respondents’ predictions related to emerging instructional strategies, technologies, and evaluation techniques for blended learning are also reported.  相似文献   

ECT Internship: Experiencing Privilege,Opportunity, and the Spirit of Giving     

Min Kyu Kim 《TechTrends》2009,53(6):12

ect Cornerstone

ECT Internship: Experiencing Privilege, Opportunity, and the Spirit of Giving  相似文献   

Action research approach on mobile learning design for the underserved   总被引：1，自引：0，他引：1  

Paul H. Kim 《Educational technology research and development : ETR & D》2009,57(3):415-435

This paper discusses an action research study focused on developing a mobile learning model of literacy development for underserved migrant indigenous children in Latin America. The research study incorporated a cyclical action model with four distinctive stages (Strategize, Apply, Evaluate, and Reflect) designed to guide constituencies involved in the study to design, test, and enhance a mobile learning model. The findings, to date, reveal some of the contextual phenomena that create both challenges and opportunities for a mobile learning model. From this, design strategies are evolving focused on sustained literacy exposure for extremely marginalized (economically, educationally, geographically, and technologically) migrant indigenous children who have no consistent access to a formal education system.  相似文献