نتایج جستجو برای: system dynamics

تعداد نتایج: 2569671  

Journal: :international journal of industrial engineering and productional research- 0
yahia zare mehrjerdi department of ie tahereh aliheidary

job satisfaction (js) plays important role as a competitive advantage in organizations especially in helth industry. recruitment and retention of human resources are persistent problems associated with this field. most of the researchs have focused on the job satisfaction factors and few of researches have noticed about its effects on productivity. however, little researchs have focused on the ...

Journal: :journal of biomedical physics and engineering 0
m. n. ashtiani laboratory of biomechanical researches, mechanical engineering department, sahand university of technology, tabriz 51335, iran m. tafazzoli-shadpour faculty of biomedical engineering, amirkabir university of technology, tehran 15875, iran h. najafi department of physics, university of velayat, iranshahr 99111, iran

background: several multiphase flow analyses have been developed to predict the fate of particles used in inhalation drug delivery; however, the collapse of droplets during their passage through respiratory tract has not been investigated. objective: to assess the probability of droplet collapse in the upper respiratory tract. methods: a 3d model of mouth-to-second generation airway after the t...

Journal: :shiraz journal of system management 0
farideh bornaee bojd zahedan branch, islamic azad university, zahedan, iran keyvan shahgholian department of industrial engineering, qazvin branch, islamic azad university, qazvin, iran bagher kord department of management, university of sistan & baluchestan, zahedan, iran

in this decade, due to the current competitive environment,reputation of industrial brands is markedly dependent upon theperformance of their supply chain. therefore, it is necessary to examinethe factors affecting their supply chain so as to increase the competitivenessof their chain. productivity is among the most important factorsin the advancement of industry and its evaluation requires the...

Journal: :international journal of industrial engineering and productional research- 0
yahia zare mehrjerdi department of ie, yazd university yazd iran

abstract the purpose of this article is to present a system dynamics (sd) model for studying the ‎interconnections among human being weight, eating habit, exercise, body fat, take-in medication, drugs-uses, and the health problems in general. due to the fact that all of these factors have direct and indirect impacts on the expenses that insurance company have to pay this author is proposing a s...

مؤمنی, منصور , مروتی‌شریف‌آبادی, علی ,

 Queuing theory in a very simple Definition is a branch of mathematics for analysis and management of waiting lines. It is developed in the first years of twentieth century when telephone waiting Lines were studied. Servers are not necessarily human beings but in queuing systems that human Agents are servers, it is possible to consider the queuing system as a dynamic system. This is because in ...

Allocation of construction risks between clients and their contractors has a significant impact on the total construction costs. This paper presents a system dynamics (SD)-based approach for quantitative risk allocation. Using the proposed SD based approach, all the factors affecting the risk allocation process are modeled. The contractor’s defensive strategies against the one-sided risk alloca...

In this paper, the dynamics of multicellular chopper are considered. The model is described by a continuous time three--dimensional autonomous system. Some basic dynamical properties such as Poincar'e mapping, power spectrum and chaotic behaviors are studied. Analysis results show that this system has complex dynamics with some interesting characteristics.

Tahereh Aliheidary, Yahia zare mehrjerdi,

Job Satisfaction (JS) plays important role as a competitive advantage in organizations especially in helth industry. Recruitment and retention of human resources are persistent problems associated with this field. Most of the researchs have focused on the job satisfaction factors and few of researches have noticed about its effects on productivity. However, little researchs have focused on the ...

M. Srinivasa Rao V. N. A. Naikan

Repairable standby system’s study and analysis is an important topic in reliability. Analytical techniques become very complicated and unrealistic especially for modern complex systems. There have been attempts in the literature to evolve more realistic techniques using simulation approach for reliability analysis of systems. This paper proposes a hybrid approach called as Markov system ...

Journal: :journal of computer and robotics 0
neda nasiri department of electrical, computer and biomedical engineering, qazvin branch, islamic azad university, qazvin, iran houman sadjadian department of electrical engineering, iran university of science and technology, tehran, iran alireza mohammad shahri department of electrical engineering, iran university of science and technology, tehran, iran

joint flexibility is a very important factor to consider in the controller design for robot manipulators if high performance is expected. most of the research works on control of flexible-joint robots in literature have ignored the actuator dynamics to avoid complexity in controller design. the problem of designing nonlinear controller for a class of single-link flexible-joint robot manipulator...

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