نتایج جستجو برای: industrial and non

تعداد نتایج: 17029603  

Bahrami, Parisa , Ekhlas, Haniyeh , Mehrdad, Ramin , Monazzam, Mohammadreza , Pouragha, Hamidreza , Zaeimdar, Mojgan ,

Introduction: Previous studies have been conducted on the effects of exposure of industrial workers to high levels of noise and their association with mental health or exposure of people to harmful levels of environmental noise. In this study, we investigated the association between moderate noise levels and the symptoms of depression, anxiety, and stress in non-industrial workers. Material an...

Journal: :international journal of mathematical modelling and computations 0
ghasem tohidi department of mathematics, islamic azad university, central tehran branch, iran iran, islamic republic of shabnam razavyan

this paper uses the l1−norm and the concept of the non-dominated vector, topropose a method to find a well-dispersed subset of non-dominated (wdsnd) vectorsof a multi-objective mixed integer linear programming (momilp) problem.the proposed method generalizes the proposed approach by tohidi and razavyan[tohidi g., s. razavyan (2014), determining a well-dispersed subset of non-dominatedvectors of...

The high volume of non-performing loans and its trend over time is one of the main problems of banks and central banking in Iran. This high volume of non-current receivables and the destructive effects that this phenomenon has, has made it very important to identify and examine the role of the factors affecting it. In the present study, determinant factors from the Borrower, lender and regional...

Maryam Tahmasbi Narges Mirehi Zahraa Marzeh

In many industrial and non-industrial applications, it is necessary to identify the largest inscribed rectangle in a certain shape. The problem is studied for convex and non-convex polygons. Another criterion is the direction of the rectangle: axis aligned or general. In this paper a heuristic algorithm is presented for finding the largest axis aligned inscribed rectangle in a general polygon. ...

Journal: :تحقیقات اقتصادی 0
یدا... دادگر دانشیار دانشگاه شهید بهشتی محمد ندیری دانشجوی دکتری دانشگاه علامه طباطبایی

this paper is analysing the role of economic reforms on the labour market in iranian industry in economic reform period (1990-2005), and in turn, it is comparing it with closed economic period (1979-1989). in order to do the above comparative analysis, the manufacturing industry has been categorized based on hecksher-ohlin and gause methodology. accordingly, we have some industrial groups, incl...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده ادبیات و زبانهای خارجی 1386

چکیده ندارد.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1375

this thesis basically deals with the well-known notion of the bear-invariant of groups, which is the generalization of the schur multiplier of groups. in chapter two, section 2.1, we present an explicit formula for the bear-invariant of a direct product of cyclic groups with respect to nc, c>1. also in section 2.2, we caculate the baer-invatiant of a nilpotent product of cyclic groups wuth resp...

Industrial effluents are a menace to the environment and the fact that their characteristics vary from industry-to-industry only adds to the complex challenge they offer to the engineers and scientists. Resource-efficient and environment-friendly solutions to this hazard are a call of the hour. Coagulation, by synthetic chemicals, has been used as a cost-effective and efficient method for manag...

2017
Jan Stenis

This paper proposes that industrial waste be regarded, in a business economic sense, as having the same basic status as regular products. A basic mathematical expression for assigning industrial costs to waste is presented. The expression can be employed in conjunction with cost-benefit analysis for estimating the “true” internal costs of industrial waste. In two case studies presented, industr...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تحصیلات تکمیلی علوم پایه زنجان - دانشکده فیزیک 1392

in the first part of this thesis we explored wetting and its dynamics for small droplets. first, we showed how a simple feature of water droplets on a surface, i.e. laplace pressure, can be exploited to build a micropump. we investigated capillary pumping in microchannels both experimentally and numerically. putting two droplets of different sizes at the in/outlet of a microchannel, will ge...

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