نتایج جستجو برای: electricity and computer

تعداد نتایج: 16868099  

ژورنال: طب کار 2020

Computer vision syndrome (CVS) is a set of visual, ocular, and musculoskeletal symptoms that result from long-term computer use. These symptoms include eyestrain, dry eyes, burning, pain, redness, blurred vision, etc, which increase with the duration of computer use. Currently, with the closure of schools and universities due to the continued COVID19 pandemic many universities have taken the pr...

Electricity plays an important role in the production of various economic sectors.  Power outages can thus impose high costs on these sectors and ultimately on economic growth and development.  The purpose of this study is to estimate the welfare losses resulting from a possible power outage in the productive economic sectors of Iran. This study was conducted in two stages using provincial pane...

Ahmad Makui Ashkan Hafezalkotob Meysam Ghaffari

This paper investigates three models to implement Tradable Green Certificates (TGC) system with aid of game theory approach. In particular, the competition between thermal and renewable power plants is formulated in three models: namely cooperative, Nash and Stackelberg game models. The price of TGC is assumed to be determined by the legislative body (government) which is fixed. Numerical examp...

ژورنال: :علوم اقتصادی 2014
علی اصغر اسماعیل نیا تیمور محمدی ابوطالب زمانی

نظر به اهمیتی که انرژی برق در پیشرفت و توسعه ی جوامع بشری دارد و به دلیل نقش تقاضای برق در سیاست گذاری ها و تصمیمات مربوط به تولید، انتقال و توزیع این انرژی حیاتی، ضروری است که تقاضای انرژی برق و بخصوص کششهای قیمتی و درآمدی تقاضای آن مورد مطالعه و بررسی قرار گیرد. انرژی برق نسبت به سایر حاملهای انرژی، ضمن داشتن نقش مؤثر در تولید و مصرف، اهمیت ویژه ای نیز در فرآیند تصمیم گیری اقتصادی واجتماعی دا...

2015
Yanming Sun

In recent years, aiming to reduce the Greenhouse Gas pollution and promote energy efficiency and conservation among consumers’ energy use, price policies and price changes derived from environmental regulations have played a more important role. In this paper, using the most recent annual state-level panel data for 48 states, I estimate a dynamic partial adjustment model for electricity demand ...

This paper aims to determine the optimum price of electricity during restructuring process. We maximized social welfare function subject to market equilibrium, maximum production capacity of each group of power plants, maximum demand of each consumer type and the potential of electricity export and import. The model was run using 2007 monthly and annual data by means of GAMS optimization softwa...

حمیدی افرا, فاطمه , صادقی, ثریا, صادقی, سمیه, محمودزاده, محمود,

This article tries to analyze the effect of eliminating the electricity subsidy on the intensity of this energy in production industries during 1995-2007 using GMM dynamic panel data method. Having used the cost function with Cobb-Douglas form, it was recognized that there is a negative and significant relationship between electricity intensity and its price. Meanwhile, the increase in the pric...

2009
Mo Joon Kim Jongseung Yoon Sang-Il Park John A. Rogers

by printing and molding Mo Joon Kim, Jongseung Yoon, Sang-Il Park, and John A. Rogers Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, 104 South Goodwin Avenue, Urbana, Illinois 61801, USA Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, 1304 West Green Street, Urbana, Illinois 61801, USA Department of Mechani...

Kambiz Shahroodi Mohammad Reza Khosravi,

One of the effective methods for improving the efficiency of an organization is benchmarking against successful organizations. Not only benchmarking could be a technique for identifying problems but also it greatly helps managers in relations of the design of processes. Among strategic and infrastructure industries in each country, the electricity industry is one of the most important and criti...

Reducing or eliminating subsidies for the electricity sector in the economy is a good way to control the daily consumption of electricity and balance the cost of supply and demand players. By increasing or decreasing electricity subsidies, indirect taxes are reduced or increased. Under these conditions, assuming the stability of primary inputs and the stability of power generation technology an...

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