نتایج جستجو برای: chair

تعداد نتایج: 15160  

2014
Matthew R. Miller

Sonarmen undergoing refresher training in the Sonar Operational Trainer compared, while on "sonar watch," the comfort of four seating designs: a contoured automobile seat with an adjustable backrest; a "kneeling" chair; a conventional office chair with an inflatable lumbar support pillow; and a conventional office chair. The subj ects were asked to use each seat for an entire day --unless it wa...

حسن بیگی, محمدرضا, محجوب, حسین, معتمدزاده, مجید, چوبینه, علیرضا,

Background and Objective: Working in sitting posture, specially using a poorly designed chair is one of the critical risk factors in developing low back pain. Low back pain is one of the most common musculoskeletal disorders (MSDs) and has been reported to occur in 50-90% of all adults with recurrent rate of up to 90%. The objective of this study was to design and develop ergonomic chair for Ir...

2005
Juergen Dingel Rob Strom

2014
Aibhin Bray Brendan Tangney

There is ongoing debate about the quality of mathematics education at post-primary level. Research suggests that, while the capacity to use mathematics constructively is fundamental to the economies of the future, many graduates of the secondary-school system have a fragmented and de-contextualised view of the subject, leading to issues with engagement and motivation. In an attempt to address s...

Journal: :CoRR 2012
Vaughan R. Pratt

In analysing a well-known hash-coding method, Knuth gave an exact expression for the average number of rejections encountered by players of a variant of musical chairs. We study a variant more closely related to musical chairs itself and deduce the same expression by a purely combinatorial approach. In an analysis of the average time to insert an item when using openaddress hash-coding, Knuth [...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1392

در این با استفاده از نظریه تابعی چگالی، ویژگی های ساختاری و الکترونی صفحه نیترید بور که هیدروژن دار ( فلوئوردار) شده را بررسی کردیم. محاسبات انرژی کل و ساختار باند الکترونی با کمک اصول اولیه و روش امواج تخت بهبودیافته خطی در مدل پتانسیل کامل و کد wien2k انجام شد. از تقریب شیب تعمیم یافته (gga)، برای بسط جمله پتانسیل تبادلی همبستگی استفاده شده است. ساختار بهینه شده نشان داد که پیوندهای bh,nh...

ژورنال: سلامت کار ایران 2013

  Background and aim: Many people have to sit down during daily activities. The process of sitting down especially for a long time in comparison of standing up cause many back pains. Special chairs with special backs and sits are designed for offices, industries and institutes because of back pain of sitting down for a long time and increasing the performance of employees. The target of this re...

Journal: :IEEE Data Eng. Bull. 2013
Kyu-Young Whang

Paul Larson and Erich Neuhold are previous TCDE chairs and have served TCDE for many years revitalizing its activities. Their valuable experience will be greatly appreciated for promoting TCDE and for serving its members. David Lomet, a previous TCDE chair, has been Chief Editor of Data Engineering Bulletin since 1992. It is his leadership that has been at the heart of the success of IEEE Data ...

2013
Juan Pablo Escorcia Rene A. Amaya

The determination of the cash to cash cycle (C2C) for supply chains provides concrete and practical means to integrate financial flow into the scope of supply chain management. In this study we propose that segmenting benchmarked companies in accordance to its corresponding role in their supply chain enhances established methodology for conducting more accurate C2C Benchmarking. This paper cont...

Journal: :iranian journal of public health 0
m moin n rezaei m yeganeh

the unesco chair in health education in tums (tums), iran, was established in immunology, asthma and allergy research institute in april 2004. the purpose of this chair is to promote an integrated system of research, training, information and documentation activities in the field of health education. the target group includes the public, health care workers, students, trainees and researchers. ...

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