نتایج جستجو برای: implementation and efficiency
تعداد نتایج: 16901206 فیلتر نتایج به سال:
Electricity consumption has been rising with an average annual growth of 7% in Iran and the imbalance in production and consumption has caused power outage crisis and economic losses. More than 50% of peak electricity demand is related to the household sector, so the household sector can be considered as the most effective component of the electricity crisis. Investment costs for the constructi...
computation of the second order delay in rc-tree based circuits is important during the design process of modern vlsi systems with respect to having tree structure circuits. calculation of the second and higher order moments is possible in tree based networks. because of the closed form solution, computation speed and the ease of using the performance optimization in vlsi design methods such as...
Introduction: Today, organizations need an integrated management system (IMS) to achieve global standards regarding the environment and employees. And one of the important goals of an integrated management system is to eliminate or reduce disasters to an acceptable level of organization. Therefore, in this study, we try to measure the efficiency of deployment of this system on safety performanc...
Environmental sustainability is an important issue for many individuals, businesses, and governments nowadays. One of the road blocks to sustainable practice is cost, which is an important consideration, particularly for business. The eco-efficiency movement was initiated to address this concern. This chapter reviews the eco-efficiency concept and explains why it is becoming a current issue for...
Haulage in open-pit mines allocates half of operational costs. Improvement in this system has significant effects in decrease of costs and increase of efficiency. Productivity in mines is a mixture of machinery efficiency and implementation of production strategies. In this paper after classifying dispatching models in open-pit mines, a new mathematical model will be introduced, to execute at t...
In the current work, different methods for optimization of turbine blade internal cooling are investigated, to achieve higher cyclic efficiency and output power for a typical gas turbine. A simple two-dimensional model of C3X blade is simulated and validated with available experimental data. The optimization process is performed on this model with two different methods. The first method is ...
water changes information in the hydrological system, in time and space, as an environmental issue takes heed of managers and decision makers in watershed management and river engineering, which can be addressed by using spatially distributed modeling. in this study simulation of water balance components in taleghan mountainous watershed is performed using the spatially distributed hydrological...
this paper considers the spatial planning system in russian federation. study of spatial planning system of russia specifies three different stages from each other. the first phase consists of the sixteenth century until the early twentieth century. in this period, base of the spatial planning was formed and gradually developed during approximately 400 years. the next phase is devoted to soviet...
Iran’s agricultural sector comparing with the other economic sector suffers from subsistence method. Small farm size, scatter distribution of holdings, lack of an appropriate irrigation and drainage systems, and non-existence of roads between farms have led to increase in production costs and reluctance regarding agriculture activities and relevant investment. This in turn demands the implement...
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