نتایج جستجو برای: technical and economic feasibility
تعداد نتایج: 16894795 فیلتر نتایج به سال:
in this paper, a study and design of energy conservation actions and the obtention of energy efficiency titles, according to the italian ministerial decree 20th july 2004, applied to lighting and electrical systemsin a school district managed by perugia province (italy), is presented.specifically, the analysis regarded the replacement of neon lamps with high efficiency ones, and the power facto...
The aim of the System Dynamics Model ESCOT is to describe a path towards a sustainable transport system in Germany and to assess its economic impacts. ESCOT was developed within the environmentally sustainable transport (EST) project of the OECD that was designed to consider the ecological and technical aspects of a transition towards sustainable transportation. ESCOT comprises five models: the...
A recent study by Autor et al. (2008) has pointed out that the skill premia has risen in the US since the 60s. Several other authors have highlighted these trends across different OECD countries (e.g., Katz and Murphy, 1992; Machin, 1996; Goldin and Katz, 1999; Chay and Lee, 2000, Conte and Vivarelli, 2007). A common consensus points to the on-going growth of the demand for high-skilled workers...
Little is known about the impact of standards on the economic development of countries which are latecomers to industrial manufacturing and innovation. Standardization is regarded primarily as a technical issue, and hence receives only limited high-level policy support. However, technical standards contribute at least as much as patents to economic growth. As a key mechanism for the diffusion o...
Much has been written on the macroeconomic aspects of the economic reform process in Latin America, but much less has been published on its microeconomic results, especially at the company level. This paper explores how Embraer, a Brazilian aircraft manufacturer, transformed itself after privatization to become a world market leader in a high-tech industry traditionally dominated by companies b...
The security, political and economic impacts of shale oil and gas, has changed the supply side of international energy market. Different countries are looking for feasible technology of shale oil production. In this paper after studies on the technical and economic aspects of shale oil production, we studied on the CAPEX and OPEX of shale oil production in a feasibility study framework in order...
The interest in recovery and reuse by sludge fractionation has increased in recent years, largely due to environmental and political considerations. This article is a survey of the status concerning phosphorus recovery, looking into national policies and experiences in different European countries to find different factors influencing the development of phosphorus recovery. The ambivalence of s...
abstract nowadays, the science of decision making has been paid to more attention due to the complexity of the problems of suppliers selection. as known, one of the efficient tools in economic and human resources development is the extension of communication networks in developing countries. so, the proper selection of suppliers of tc equipments is of concern very much. in this study, a ...
a semi-empirical mathematical model for predicting physical part of ignition delay period in the combustion of direct - injection diesel engines with swirl is developed . this model based on a single droplet evaporation model . the governing equations , namely , equations of droplet motion , heat and mass transfer were solved simultaneously using a rung-kutta step by step unmerical method . the...
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