Direct skeletal attachment prosthesis for the amputee athlete: the unknown potential     

Munjed Al Muderis  Horst Heinrich Aschoff  Belinda Bosley  Guy Raz  Ludger Gerdesmeyer  Brendan Burkett 《Sports Engineering》2016,19(3):141-145

Lower limb amputees often experience complications with the use of conventional socket-type prostheses, which further reduce their already compromised ability to perform the activities of daily living, or to participate in sporting activities. During the last two decades, a new technology of direct skeletal attachment (osseointegration) of prosthesis to the femoral residuum has been developed. The aim of this research was to assess the implant design, surgery protocols, and functional testing of this new technology on the first 100 patients using the Integral Leg Prosthesis procedure. This new knowledge can guide future engineering developments of osseointegration within the sporting arena. Between 1999 and 2013, direct skeletal implantation was performed on 112 amputees, from two centres in Germany and Australia. From the experience of the surgical team, modifications were made to the implant design. This re-engineering of the implant has reduced the surgical revisions due to infection from 29 % with the early implant design down to 7 %. The functional testing of the 34 Australian cases were assessed pre- and 12 months post-implant with significant improvements of one complete K-scale; the Q-TFA measures increased (50.9–86.7), whilst the Timed Up and Go decreased significantly (12.43 s ± 3.89 to 8.03 s ± 2.80), and the 6 min walk increased (304.0–383.9 m). From these findings, osseointegration technology is realistically the way of the future for amputee athletes. Further refinement of the implant design and sports-specific functional testing are required to define the potential of this technology.  相似文献   

Teaching English via closed circuit television in a sex-segregated community     

Abdullah Al-Saadat  Elhami Afifi 《British journal of educational technology : journal of the Council for Educational Technology》1990,21(3):175-182

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Test Item Analysis＂ An Educator Professionalism Approach     

Mohd Sahandri Gani Hamzah  Saifuddin Kumar Abdullah 《美中教育评论》2011,(3):307-322

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Student engagement scale: development,reliability and validity     

Selim Gunuc  Abdullah Kuzu 《Assessment & Evaluation in Higher Education》2015,40(4):587-610

In this study, the purpose was to develop a student engagement scale for higher education. The participants were 805 students. In the process of developing the item pool regarding the scale, related literature was examined in detail and interviews were held. Six factors – valuing, sense of belonging, cognitive engagement, peer relationships (emotional engagement-I), relationships with faculty members (emotional engagement-II) and behavioural engagement within the scope of the components of campus engagement and class engagement – made up of 41 items were identified. The total variance explained was 59%. A higher student engagement score was regarded as an indicator that the student had a high level of engagement with the university, campus and class, while a lower score demonstrated that the student’s engagement with the campus and class was weak or that disengagement could occur.  相似文献   

Reporting Quality of Single-Case Research Published in Learning Disabilities Journals     

Brittany L. Hott  Sarah Heiniger  Jasmine Justus  Kathleen M. Randolph  Amal Al Shabibi  Brooki Beasley  Kerry Frank  Wendy Mitchell  Courtney Tennell  Fanee Wester 《Learning disabilities research & practice》2023,38(3):224-238

Single-case research designs are useful for learning disability researchers interested in refining novel interventions (e.g., new mathematics intervention) before scaling, small n populations (e.g., students with comorbid learning and emotional and behavioral disabilities), and testing unique conditions (e.g., remote locales). Much attention has been devoted to developing research quality standards, which is essential for replication and implementation fidelity; however, little is known about the reporting quality of single-case design studies. To gain insight into the quality of learning disability single-case research design study reporting, we analyzed 72 articles published between 2010 and 2021 in six learning disability-focused journals using the Single-Case Reporting Guideline In BEhavioral interventions (SCRIBE) standards. Findings suggest that reporting quality has remained stagnant, and none of the studies reviewed met all of the reporting standards. Alignment with standards ranged from 33% to 77%. Implications for researchers and practitioners are discussed.  相似文献   

A stochastic multi-parameters divergence method for online auto-tuning of fractional order PID controllers     

Celaleddin Yeroğlu  Abdullah Ateş 《Journal of The Franklin Institute》2014

This paper presents a stochastic multi-parameters divergence method for online parameter optimization of fractional-order proportional–integral–derivative (PID) controllers. The method is used for auto-tuning without the need for exact mathematical plant model and it is applicable to diverse plant transfer functions. The proposed controller tuning algorithm is capable of adaptively responding to parameter fluctuations and model uncertainties in real systems. Adaptation skill enhances controller performance for real-time applications. Simulations and experimental observations are carried on a prototype helicopter model to confirm the performance improvements obtained by the online auto-tuning of fractional-order PID structure in laboratory conditions.  相似文献   

The application of workflow management to digital heritage resources     

Abdullah Al-Barakati  Martin White  Zeeshan Patoli 《International Journal of Information Management》2014

Recent years have witnessed a noticeable proliferation in Digital Library Systems (DLSs) and their specialized form represented in Digital Heritage Resources (DHRs). DHRs usually manage a complex and varied mix of digital heritage objects of different types and formats. They tend to be complex in nature and usually involve complex, simultaneous and intersecting workflows. As a result, DHRs impose implementation challenges on any solutions that aim to manage their workflows. Thus, despite the proliferation of DHRs, it is a noteworthy trend that there is a general lack of workflow management solutions that can be utilized in such systems. As a research area that is rarely covered, this paper therefore presents the design and development of a novel Workflow Management System (WfMS) built to integrate with DHRs specifically, and DLSs in general. In this context, an experimental WfMS aimed to test the validity of workflow management integration with DHRs. The devised WfMS was built as a workflow management solution that can adequately address the specific hurdles imposed by DHR implementations. Additionally, a novel DHR implementation framework called DISPLAYS (Digital Library Services for Playing with Antiquity and Shared Heritage) is presented as a test bed for the proposed WfMS.  相似文献   

Relationships between anthropometric measures and athletic performance,with special reference to repeated-sprint ability,in the Qatar national soccer team     

Franck Brocherie  Olivier Girard  Fabricio Forchino  Hani Al Haddad  Gilvan A. Dos Santos  Grégoire P. Millet 《Journal of sports sciences》2014,32(13):1243-1254

Abstract

The aim of this study was to determine potential relationships between anthropometric parameters and athletic performance with special consideration to repeated-sprint ability (RSA). Sixteen players of the senior male Qatar national soccer team performed a series of anthropometric and physical tests including countermovement jumps without (CMJ) and with free arms (CMJwA), straight-line 20 m sprint, RSA (6 × 35 m with 10 s recovery) and incremental field test. Significant (P < 0.05) relationships occurred between muscle-to-bone ratio and both CMJs height (r ranging from 0.56 to 0.69) as well as with all RSA-related variables (r < –0.53 for sprinting times and r = 0.54 for maximal sprinting speed) with the exception of the sprint decrement score (S_dec). The sum of six skinfolds and adipose mass index were largely correlated with S_dec (r = 0.68, P < 0.01 and r = 0.55, P < 0.05, respectively) but not with total time (TT, r = 0.44 and 0.33, P > 0.05, respectively) or any standard athletic tests. Multiple regression analyses indicated that muscular cross-sectional area for mid-thigh, adipose index, straight-line 20 m time, maximal sprinting speed and CMJwA are the strongest predictors of S_dec (r² = 0.89) and TT (r² = 0.95) during our RSA test. In the Qatar national soccer team, players’ power-related qualities and RSA are associated with a high muscular profile and a low adiposity. This supports the relevance of explosive power for the soccer players and the larger importance of neuromuscular qualities determining the RSA.  相似文献   

Omani girls’ conceptions of gender equality: addressing socially constructed sexist attitudes through educational intervention     

Fatma H. Al Sadi 《牛津教育评论》2017,43(2):209-224

This paper is based on a quasi-experimental study which examines the effects of a school-based intervention on Omani girls’ attitudes towards the notion of gender equality. A questionnaire was administered before and after the intervention to 241 girls (116 in the experimental group; 125 in the control group). A semi-structured interview was conducted before and after the intervention with 16 participants (eight from the experimental group; eight from the control group). Analysis of quantitative data in the post-intervention round revealed statistically significant differences between the two groups in attitudes towards gender equality in favour of the experimental group. Similarly, the analysis of qualitative data from the post-intervention round showed that the experimental group differed significantly from the control group in its attitudes towards women’s roles and gender equality. The paper concludes by emphasising the critical role that education can play in challenging and transforming prejudicial and discriminatory attitudes.  相似文献   

Predicting First Grade Reading Performance from Kindergarten Response to Tier 1 Instruction     

Al Otaiba S  Folsom JS  Schatschneider C  Wanzek J  Greulich L  Meadows J  Li Z  Connor CM 《Exceptional children》2011,77(4):453-470

Many schools are beginning to implement multi-tier response to intervention (RTI) models for the prevention of reading difficulties and to assist in the identification of students with learning disabilities (LD). The present study was part of our larger ongoing longitudinal RTI investigation within the Florida Learning Disabilities Center grant. This study used a longitudinal correlational design, conducted in 7 ethnically and socio-economically diverse schools. We observed reading instruction in 20 classrooms, examined response rates to kindergarten Tier 1 instruction, and predicted students' first grade reading performance based upon kindergarten growth and end of year reading performance (n = 203). Teachers followed an explicit core reading program and overall, classroom instruction was rated as effective. Results indicate that controlling for students' end of kindergarten reading, their growth across kindergarten on a variety of language and literacy measures suppressed predictions of first grade performance. Specifically, the steeper the students' trajectory to a satisfactory outcome, the less likely they were to demonstrate good performance in first grade. Implications for future research and RTI implementation are discussed.  相似文献