scholarly journals INFLUENCE OF MAXIMAL ISOMETRIC STRENGTH ON 20-METER SPRINT TIME

2021 ◽  
Vol 27 (1) ◽  
pp. 60-64
Author(s):  
Álvaro Huerta Ojeda ◽  
Daniel Jerez-Mayorga ◽  
Sergio Galdames Maliqueo ◽  
Darío Martínez García ◽  
Ángela Rodríguez-Perea ◽  
...  
Keyword(s):  
Isometric Force ◽  
Pearson Correlation ◽  
Case Series ◽  
Level Of Evidence ◽  
Jump Test ◽  
Wide Range ◽  
Natural Movement ◽  
And Performance ◽  
High Level ◽  
Very High

ABSTRACT Introduction The squat is an exercise that is widely used for the development of strength in sports. However, considering that not all sports gestures are vertical, it is important to investigate the effectiveness of propulsive force stimuli applied in different planes. Objective The main purpose of this study was to determine the influence of maximum isometric force (MIF) exerted on starting blocks over performance in 5, 10 and 20-meter sprints. Methods Seven high-level male sprinters (mean age ± SD = 28 ± 5.77 years) participated in this study. The variables were: a) MIF in squats and on starting blocks (measured using a functional electromechanical dynamometer [FEMD]), b) time in 5, 10 and 20-m sprints and c) jump height (measured by the squat jump test). For data analysis, a Pearson correlation was performed between the different variables. The criteria for interpreting the strength of the r coefficients were as follows: trivial (<0.1), small (0.1−0.3), moderate (0.3−0.5), high (0.5−0.7), very high (0.7−0.9), or practically perfect (>0.9). The level of significance was p < 0.05. Results There was very high correlation between MIF exerted on starting blocks and performance in the first meters of the sprint (5-m: r = -0.84, p = 0.01). However, there was small correlation between MIF in squats and performance in the first meters of the sprint (5-m: r = -0.22, p < 0.62). Conclusion The MIF applied on starting blocks correlates very high with time in the first meters of the sprint in high-level athletes. In addition, the use of the FEMD provides a wide range of possibilities for evaluation and development of strength with a controlled natural movement. Level of evidence IV; Prognostic Studies - Case series.

scholarly journals [Factors Affecting Motivation on Learning Arabic] Faktor-Faktor yang Mempengaruhi Motivasi terhadap Pembelajaran Bahasa Arab

2015 ◽  
Vol 10 ◽  
pp. 82-97 ◽  
Author(s):  
Abdul Hakim Bin Abdullah ◽  
Ab. Aziz Bin Sulaiman ◽  
Wan Ismail Bin Wan Abdullah
Keyword(s):  
Quantitative Research ◽  
Teaching And Learning ◽  
Pearson Correlation ◽  
Secondary Level ◽  
Good Interest ◽  
Self Awareness ◽  
Validity And Reliability ◽  
Factors Affecting ◽  
And Performance ◽  
High Level

The purpose of this study is identify factors that affect students motivation in  learning Arabic among lower secondary level students at Naim Lilbanat National Religious Secondary School (SMKA), Kota Bharu, Kelantan. To achieve this purpose, four objectives have been outlined; to identify the level of students performance in Arabic, to identify the level of students interest towards Arabic, to identify factors that affect students motivation towards Arabic and to evaluate the relationship between motivation and students performance in Arabic. This quantitative research used questionnaires for collecting data. 93 students at lower secondary level at SMKA Naim Lilbanat were selected by simple random technique as the sample that represent 40% of the research population. A pilot study was conducted to ensure the quality of feasibility, validity and reliability of the instrument. The validity of items was obtained by referring to 10 experts of the subject matter. Coefficient of reliability value was obtained at a high level that is 0.86 through Cronbach Alpha test using SPSS version 19. The study found that 88 (94.6%) respondents have a good performance in Arabic and 78 (83.9%) respondents have a good interest towards Arabic. According to this study, five factors that affect students motivation in descending order are: attitude toward Arabic as they consider it as important, Arabic environment, attitude toward Arabic as they consider it as easy to learn and understand, self-awareness and the effectiveness of teaching and learning in the classroom. The Pearson correlation test showed that there is a positive significant relationship at a moderate level between level of interest and performance of Arabic among lower secondary level students at SMKA Naim Lilbanat.   Kajian ini bertujuan untuk mengenal pasti faktor-faktor yang membentuk motivasi terhadap pembelajaran bahasa Arab dalam kalangan pelajar peringkat menengah rendah di Sekolah Menengah Kebangsaan Agama (SMKA) Naim Lilbanat, Kota Bharu, Kelantan. Bagi mencapai tujuan tersebut, empat objektif telah digariskan iaitu mengenal pasti tahap pencapaian pelajar bagi mata pelajaran Bahasa Arab, mengenal pasti tahap minat pelajar terhadap mata pelajaran Bahasa Arab, mengenal pasti faktor-faktor yang mempengaruhi motivasi pelajar terhadap mata pelajaran Bahasa Arab dan menguji hubungan tahap motivasi pelajar dengan pencapaian Bahasa Arab. Kajian ini berbentuk kuantitatif dan menggunakan soal selidik sebagai alat pengumpulan data. Seramai 93 orang pelajar peringkat menengah rendah di SMKA Naim Lilbanat telah dipilih secara rawak mudah sebagai sampel yang merupakan 40% daripada jumlah populasi kajian. Satu kajian rintis telah dijalankan bagi menjamin kualiti kebolehlaksanaan, kesahan dan kebolehpercayaan instrumen. Kesahan instrumen diperoleh secara merujuk kepada 10 orang pakar bidang. Nilai keefisienan kebolehpercayaan item diperoleh pada tahap tinggi iaitu 0.86 daripada ujian Alpha Cronbach menggunakan perisian SPSS versi 19. Kajian ini mendapati 88 orang (94.6%) responden mempunyai pencapaian yang baik dalam mata pelajaran Bahasa Arab. Kajian ini juga mendapati 78 orang (83.9%) responden mempunyai tahap minat yang baik terhadap mata pelajaran Bahasa Arab. Lima faktor yang paling mempengaruhi motivasi pelajar secara turutan menurun ialah: sikap terhadap mata pelajaran Bahasa Arab yang dianggap penting, persekitaran bahasa Arab, sikap terhadap mata pelajaran Bahasa Arab yang dianggap mudah dipelajari dan difahami, kesedaran diri dan keberkesanan pengajaran dan pembelajaran dalam bilik darjah. Ujian korelasi Pearson memperlihatkan wujud hubungan positif yang signifikan pada kadar sederhana antara tahap motivasi dan pencapaian Bahasa Arab dalam kalangan pelajar peringkat menengah rendah di SMKA Naim Lilbanat.

scholarly journals A Technique to Minimize Aerosolization During Percutaneous Tracheostomy in COVID-19 Patients

2020 ◽  
Vol 86 (8) ◽  
pp. 904-906
Author(s):  
Alejandro Betancourt-Ramirez ◽  
Jay A. Yelon ◽  
Paul Boland ◽  
Michael Amaturo
Keyword(s):  
Prolonged Mechanical Ventilation ◽  
Percutaneous Tracheostomy ◽  
Percutaneous Dilatational Tracheostomy ◽  
Case Series ◽  
Surgical Intensive Care Unit ◽  
Surgical Team ◽  
Surgical Intensive Care ◽  
Level Of Evidence ◽  
Dilatational Tracheostomy ◽  
And Performance

Background The SARS-CoV-2 pandemic has caused respiratory failure in many patients. With no effective treatment or vaccine, prolonged mechanical ventilation is common in survivors. Timing and performance of tracheostomy, for both patient and surgical team safety, remains a question. Here within, we report our experience with percutaneous dilatational tracheostomy with modification to minimize aerosolization. Methods A modified percutaneous dilatational tracheostomy technique is described. The technique was performed on 10 patients in the surgical intensive care unit. Results Ten patients underwent percutaneous dilatational tracheostomy. There were 7 males, and the average age for the group was 60.8 years. The average number of ventilator days before the operation was 26.3. All procedures were successful, and no patient had any procedure-related complications. Conclusions The procedure described was successful in our patient population. We believe that this approach is safe for patients with coronavirus disease 2019 and limits aerosolization during the operation. Level of evidence Level IV, case series.

Health Policy in East Asia: Objectives, Priorities and Performance

2020 ◽  
pp. 1-23
Author(s):  
Gyu-Jin Hwang
Keyword(s):  
Social Rights ◽  
Common Belief ◽  
Asian Countries ◽  
Welfare Capitalism ◽  
Wide Range ◽  
Policy Arrangements ◽  
Policy Objectives ◽  
The Common ◽  
And Performance ◽  
High Level

This article aims to identify how the economies that do not necessarily prioritise social rights in their social policy arrangements fare in achieving various healthcare objectives. The big five of East Asian countries – China, Japan, South Korea, Taiwan, Singapore plus Hong Kong – are considered as such cases. It first highlights a wide range of variations in their healthcare offerings. It then shows that, contrary to the common belief, they constitute a surprisingly high level of redistributive elements in them. Deviating from their overall welfare regime characteristics, each healthcare system presents a unique combination of policy objectives in social, medical, economic and political terms, raising a question of the utility of social rights as a central conceptual lens to understand the world of welfare capitalism.

Extremely Light Weight Rheocast Components for Automotive Space Frame

2012 ◽  
Vol 192-193 ◽  
pp. 545-550 ◽  
Author(s):  
Mario Rosso ◽  
Ildiko Peter ◽  
Gianluigi Chiarmetta ◽  
Ivano Gattelli
Keyword(s):  
High Performance ◽  
Mechanical Tests ◽  
Standard Samples ◽  
Fe Content ◽  
Wide Range ◽  
Automotive Parts ◽  
Fracture Surface Analysis ◽  
High Level ◽  
Non Destructive ◽  
Very High

This paper presents an analysis of a new rheocasting process suitable for the manufacturing of high performance automotive parts. The process is able for the realization of components using Al alloys. An important aspect is related to the possibility to obtain quite wide range of thicknesses, starting from 2.5 mm. The used alloy is the well known A356, with low Fe content, maximum 0.08 wt%. T6 heat treatments has been performed, while the soundness of the parts has been certified by non destructive tests. These parts are produced to be mounted on a top level and famous sport car. Non standard samples for mechanical tests have been machined directly from the components. Following the mechanical tests fracture surface analysis has been carried out by SEM to observe some morphological details and to evaluate the influence of the process and of the alloy conditions on the fracture behaviour. On the polished transverse sections of the samples morphological analysis has been performed. The obtained results shown high level of mechanical strength for all series of components. The reliability of the process is very high at a convenient level of manufacturing rate. The weldability of the parts has been demonstrated.

scholarly journals What Makes Employees Productive and Have High Performance? Human Capital Investment in Universities

2020 ◽  
pp. 21-36
Author(s):  
Fitri Nurmahmudah ◽  
Eka Cahya Sari Putra
Keyword(s):  
Human Capital ◽  
Capital Investment ◽  
High Performance ◽  
Evaluation Method ◽  
Net Present Value ◽  
Pearson Correlation ◽  
Human Capital Investment ◽  
Correlation Technique ◽  
And Performance ◽  
High Level

The study describes the evaluation results concerning the improvement of the education levels among the employees of a university in Indonesia by making an investment in education. The study is aimed at investigating the employees’ productivity and performance after making an investment in education. This study with evaluation method using discrepancy model. The sample of the study consisted of 255  non-academic university employees. Data were collected by way of a questionnaire on Guttmann scale. The questionnaire was validated by using logical and empirical validation by a Pearson correlation technique and reliability by KR-20 technique. The data analysis with descriptive. To calculate the capital human investment, the human capital investment formula was used for finding payback period, benefit/cost ration, return-on-investment, net-present-value, and internal-rate-of-return. The results of the study showed that the employees who made human capital investment in education were able to increase their productivity and performance as their insights, knowledge, and skills improved. The research findings were able to give insights to leaders in high-level institutions or government institutions that investing in education is truly essential, needs more attention, and needs to be done by employees.

An ultrasensitive isometric force transducer for single smooth muscle cell mechanics

1976 ◽  
Vol 40 (2) ◽  
pp. 243-246 ◽  
Author(s):  
P. G. Canaday ◽  
F. S. Fay
Keyword(s):  
Smooth Muscle ◽  
Smooth Muscle Cells ◽  
Smooth Muscle Cell ◽  
Cell Mechanics ◽  
Isometric Force ◽  
High Sensitivity ◽  
Force Transducer ◽  
And Performance ◽  
Low Drift ◽  
Very High

The principles of operation, design, and performance of a differential photooptical transducer of very high sensitivity are described. Useful range is 10–2,000 mugf with sufficiently low drift to allow recordings of contractile responses of isolated single smooth muscle cells. Comparison with several previous designs is presented.

scholarly journals Examining the Roles and Consequent Decision-Making Processes of High-Level Strength and Conditioning Coaches

Societies ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 76
Author(s):  
Paul Downes ◽  
Dave Collins
Keyword(s):  
Decision Making ◽  
Cognitive Task ◽  
Dynamic Decision Making ◽  
Full Time ◽  
Head Coach ◽  
Strength And Conditioning ◽  
Wide Range ◽  
Performance Domains ◽  
And Performance ◽  
High Level

Research into sports coaches has identified the valuable role they play concerning social support provided to athletes together with their contribution to social and cultural interactions within both the participation and performance domains. The purpose of the present study was to qualitatively extract and examine the knowledge and on-task cognitions of high-level coaches (HLCs) within strength and conditioning (S and C). Applied cognitive task analysis (ACTA) was used to examine ten HLCs, each purposefully sampled to reflect over eight years of work in full time environments. The analysis of responses demonstrated HLCs engage in a pattern of innovative and diverse thinking, together with adaptability and multilevel planning, designed to promote an inclusive approach from performers, coaches and management. Commonality was demonstrated within the decision making of HLCs during the design of training programs. Communication was another important consideration when connecting with athletes, observing athletes, speaking to the head coach and integrating their approach with others. A confident, flexible approach to adapting to situational demands was evident and supported by the ability to recall and select from a wide range of previously learnt and tested strategies. Evidence is offered for the importance of interpersonal and social factors in HLCs’ relationships with athletes and coaches. The incorporation of strategies to support versatile, dynamic decision making within future S and C coach development materials will support more impactful performances by coaches at all stages of the coaching process.

An analysis of the causes and consequences of firefighters’ accidents at work in the State Fire Service in 2010 – 2016

2018 ◽  
Vol 562 (7) ◽  
pp. 16-20
Author(s):  
Dominik Grzybowski ◽  
Magdalena Młynarczyk
Keyword(s):  
Fire Service ◽  
The State ◽  
Wide Range ◽  
High Level ◽  
Very High ◽  
Level Of Risk

The wide range of tasks performed by firefighters of the State Fire Service – and the multitude of risks they are exposed to – have contributed to qualifying this profession as carrying a very high level of risk. The article analyzes the causes and effects of firefighters’ accidents in the State Fire Service in 2010 – 2016.

scholarly journals The 100 top-cited articles in orthodontics from 1975 to 2011

2012 ◽  
Vol 83 (3) ◽  
pp. 491-499 ◽  
Author(s):  
Jifang Hui ◽  
Zongkai Han ◽  
Guannan Geng ◽  
Weijun Yan ◽  
Ping Shao
Keyword(s):  
Study Design ◽  
Scientific Information ◽  
Journal Citation Report ◽  
Case Series ◽  
The United States ◽  
Level Of Evidence ◽  
Knowledge Database ◽  
Article Type ◽  
High Level ◽  
Dentofacial Orthopedics

ABSTRACT Objective: To identify the 100 top-cited articles published in orthodontics journals and to analyze their characteristics to investigate the achievement and development of orthodontics research in past decades. Methods and Materials: The Institute for Scientific Information Web of Knowledge Database and the 2011 Journal Citation Report Science Editions were used to retrieve the 100 top-cited articles published in orthodontics journals since 1975. Some basic information was collected by the Analyze Tool on the Web of Science, including citation time, publication title, journal name, publication year, and country and institution of origin. A further study was then performed to determine authorship, article type, field of study, study design, and level of evidence. Results: The 100 target articles were retrieved from three journals: American Journal of Orthodontics and Dentofacial Orthopedics (n  =  74), The Angle Orthodontist (n = 15), and European Journal of Orthodontics (n  =  11). Since 1975, the articles cited 89 to 545 times mainly originated from the United States, and the overwhelming majority of articles were clinical. The most common study design was case series; 40 articles were classified as level IV and 12 as level V evidence. Conclusions: The 100 top-cited articles in orthodontics are generally old articles, rarely possessing high-level evidence.

scholarly journals Sizing and Balancing of a Semi-Automated Line for Automotive Electric Motors by Means of Ergonomic and Performance Analysis

2020 ◽  
Vol 9 (4) ◽  
pp. 2305-2317
Keyword(s):  
Discrete Event ◽  
Walking Distance ◽  
Discrete Event Simulations ◽  
Manufacturing Line ◽  
Wide Range ◽  
And Performance ◽  
Ergonomic Analysis ◽  
High Level ◽  
The University ◽  
Automated Line

Smart mobility has become more and more critical during the last years, being one of the most keyways to reduce and regulate vehicular traffic and relevant environmental pollution. In this context, the University of Bergamo participates in a broad project promoted by Brembo S.p.A., a well-known Italian automotive company specialized in vehicles' braking systems, aimed at the synergistic development of the design of brushless electric motor for braking and the relevant production process. The present paper concerns the design phase of the manufacturing line and, in particular, the sizing and the balancing of the line itself. The production line is a semi-automated one, hence many different scenarios have been considered, according to the number of operators and to the number of machines assigned to each operator. The method applied for the design process is based on the application of discrete – event simulations; as a tool for the analysis of each scenario, FlexSim software has been used. The high number of workstations involved, the evaluation of the ergonomics and productivity of each single task, and the use of a wide range of indexes as assessment criteria lead to an activity characterized by a high level of complexity. The operators' ergonomic analysis refers to the ISO standard related to the evaluation of the ergonomic risks and on the operator's walking distance covered during the shift. The paper ends showing how it is possible to define the best scenario, taking into consideration such indexes which concern productivity, ergonomics, optimal balancing of the operators and the distance travelled by the operators during the shift.

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