نتایج جستجو برای: system model

تعداد نتایج: 3856064  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان 1389

implicit and unobserved errors and vulnerabilities issues usually arise in cryptographic protocols and especially in authentication protocols. this may enable an attacker to make serious damages to the desired system, such as having the access to or changing secret documents, interfering in bank transactions, having access to users’ accounts, or may be having the control all over the syste...

Journal: :مهندسی صنایع 0
علی اکبر اسلامی‏بلده مهندسی صنایع- دانشگاه صنعتی امیر کبیر میرمهدی سیداصفهانی دانشکده مهندسی صنایع -دانشگاه صنعتی امیرکبیر محمدعلی فارسی پژوهشکده سامانه‏های فضانوردی-پژوهشگاه فضایی ایران

the redundancy allocation problem can be described as selecting the components and system configuration in order to optimize some objective function(s) without violating the system constraints. operating conditions are not constant in many advanced engineering systems. mostly, in the engineering applications selection, the number of redundancy components must be balanced among the constraints (...

Journal: :iranian journal of management studies 2011
majid ramezan

while the growth of mis investment and its influence is making mis evaluation ever more indispensable, little attention has been paid to assessing and communicating system effectiveness. this paper attempts to empirically assess the effectiveness of integrated human resource information system in iranian oil industry. as suggested by recent research, the widely accepted is success model is ba...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده مهندسی عمران 1388

چکیده روش های متعددی برای برآورد رواناب حاصل از بارش در حوضه های آبریز وجود دارد. یکی از این روش ها استفاده از مدل های هیدرولوژیکی است. با استفاده از مدل های هیدرولوژیکی و شبیه سازی فرآیندهای هیدرولوژیکی می توان با صرف کمترین زمان و هزینه، رواناب و مولفه های دیگر چرخ? هیدرولوژیکی را برآورد کرد. از آنجا که در حوضه های آبریز اندازه گیری تمام کمیت های مورد نیاز برای تحلیل رواناب ممکن نیست، انتخاب...

Journal: :international journal of environmental research 2014
z. kazemi n.b. hashim h. aslani z. liu p.m. craig

the johor strait is an estuarine system located on the coast of the state of johor in malaysia.the western part of johor strait is a shallow estuarine located between causeway and pulai river. ahydrodynamic model was calibrated based on the environmental fluid dynamic code (efdc) from 4th to 17th of october, 2009. in this calibration, the efdc hydrodynamic model was configured to simulate time ...

Journal: :مدیریت آب و آبیاری 0
نسترن چیت ساز کارشناس ارشد گروه مهندسی آبیاری و زهکشی، پردیس ابوریحان، دانشگاه تهران، پاکدشت - ایران محمد ابراهیم بنی حبیب دانشیار گروه مهندسی آبیاری و زهکشی، پردیس ابوریحان، دانشگاه تهران، پاکدشت – ایران

the multi-criteria decision making model is an important tool for decision making in water resource management. in this paper, the topsis model was used to rank seven flood management options in the gorganrood river flood management project, including conservation of natural condition, golestan reservoir management, levee construction, diversions-channel construction, flood forecasting and warn...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2005
hassan pahlevanzadeh amir mohseni ahooei

vapor-liquid equilibrium in nh3-co2-h2o system at high pressures has been studied. the uniquac-nrf model for this system was extended by using the goppert 4 maurer reported datas. since the system contains molecules and ionic species the binary interaction parameters considered, where those are of molecule-molecule, molecule-ion and ion-ion types. these interaction parameters are taken as const...

Journal: :international journal of smart electrical engineering 2013
saber talari mahmoud reza haghifam ali akhavein

in this paper, a stochastic two-stage model is offered for optimization of the day-ahead scheduling of the microgrid. system uncertainties including dispatchable distributed generation and energy storage contingencies are considered in the stochastic model. for handling uncertainties, monte carlo simulation is employed for generation several scenarios and then a reduction method is used to d...

Journal: :iranian journal of management studies 2011
seyed mostafa razavi

control and evaluation are major secrets of an organization's survival.universities, as research and educational organizations, need to be evaluated in order to survive. the results of educational activities encompass a vast spectrum including the graduates, researchers and planners, scientific publications, as well as satisfaction of students, parents, profossors and staff (ramsden, 1996).th...

Journal: :جغرافیا و توسعه ناحیه ای 0

a systemic approach to tourism may be regarded as a comprehensive measure to appreciate, analyze, plan and mobilize tourism as an industry. through such an approach, one may investigate and bring into alignment factors influencing tourism (such as tourists, the host society, institutes associated with tourism, and the environment) as an interrelated system of elements. to put it another way, a ...

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