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Influence of building envelope thermal protection on heat loss value in the building (rus)
Vatin N.I.,Nemova D.V.,Rymkevich P.P.,Gorshkov A.S.
Magazine of Civil Engineering , 2012,
Abstract: The research presents the calculations for the heat losses through the envelope of the apartment building. The calculations are provided for different levels of insulation of enclosing structures (i.e. wall, windows, roof etc) according to three normative documents: Set of rules 50.13330.2012 (rus), Construction Norms and Regulations 23-02-2003 (rus) and National Building Code of Finland, Part D3 (fin). The impact of level of thermal protection of external enclosure structures on the values of heat losses, the operating costs and the costs of fuel and energy resources during the heating period (for 10, 30 and 50 years of upkeep of buildings) on the example of the one habitable apartment building is analyzed. Calculation of payback periods of the energy saving actions directed on increase of level of thermal protection of external enclosure structures of buildings is given. Economic efficiency of investments in energy saving measures is analyzed.
About energy saving and increase of energy efficiency in buildings  [PDF]
L.L. Goshka
Magazine of Civil Engineering , 2010,
Abstract: In the article the analysis of National law №261 "Energy saving and increase of energy efficiency..." from the point of view of building systems is given. The recommendations for modernization of heat, ventilation and air conditioning (HVAC) systems taking into account energy efficiency requirements are given.
ECONOMIC EFFICIENCY AND PROFITABILITY
Marinela Geam?nu
Studia Universitatis Vasile Goldis Arad, Seria Stiinte Economice , 2011,
Abstract: Economic efficiency is a term used to estimate the results of an economic activitycomparing to the efforts involved in the respective activity. Economic efficiency is themain qualitative factor of economic growth, as it assures the absolute growth of theoutcome at the same effort amount. Economic efficiency includes profitability, which is ageneral indicator for efficiency.
HABITS, SAVING PROPENSITY, AND ECONOMIC GROWTH  [PDF]
Wei-Bin ZHANG
Scientific Bulletin : Economic Sciences , 2012,
Abstract: The purpose of this paper is to study economic growth with preference change on the basis of the Solow one-sector growth model, Zhang’s alternative approach to household behavior, the Ramsey growth theory with time preference, and the traditional growth model with habit formation. The propensity to save is dependent on wealth and current income and the propensity to consumption is related to the habit stock. We simulate the model and demonstrate the motion of the economic dynamics with endogenous preference. We also examine effects of changes in some parameters on the motion of the economic system.
STRATEGY FOR ECONOMIC EFFICIENCY GROWTH OF THE ENVIRONMENTAL PROTECTION EXPENSES IN AGRICULTURE. OBJECTIVES AND PRIORITIES
DANIELA SIMTION,ROXANA LUCA
Lucr?ri ?tiin?ifice : Management Agricol , 2009,
Abstract: At agriculture level, as a branch of the national economy, an increase in environmental performance results in an increase in social efficiency, and at a farm level eco-efficiency implies an increase in economic efficiency. In essence, an increase in economic efficiency means saving resources In the actual state of the economy development of our country, in the process of restructuring in accordance with the requirements of market economy, ensuring competitiveness at domestic and international scale involves rational spending, with maximum efficiency of all resources, material and financial, of the renewable or non-renewable. On the other hand, we have the fact that prices in actual market economy conditions are formed in the process of competition and affect profitability.
Evaluation of the Gardening Economic Efficiency  [PDF]
Kutkovetska T. O.
Economics of Development , 2011,
Abstract: In terms of industrial gardening market transformation and current difficult situation as to agricultural prices, it is objective to have new methodological approaches to the economic evaluation of all components when producing fruits, berries, plant material and the gardening enterprises and their subdivisions’ determination of the overall economic performance as well.The gardening efficiency as a component of the agricultural production’s efficiency is a complex economic category which reflects the efficiency of production. The main role in this concept is given to the gardening intensification which is the process of improving the use of all resources resulting in the enhanced loading of the production process per unit time.The need to evaluate the gardening economic efficiency, which is considered in this paper, is that there is a need in the appropriate unified system of indicators. In the gardening such indicators are: yield, relative value of gross output, cost of grown products, labor costs, production on 1 man-hour in physical and value terms, the selling price, profit per unit area and unit mass, etc. All these indicators are closely interrelated and have a great impact on the economic efficiency of the branch and its growth.
Efficiency of economic development models
Oana Camelia Iacob,Ana-Maria VOlintiru,Andrei Mihai Cristea
Hyperion Economic Journal , 2013,
Abstract: The world economy is becoming increasingly integrated. Integrating emerging economies of Asia, such as China and India increase competition on the world stage, putting pressure on the "actors" already existing. These developments have raised questions about the effectiveness of European development model, which focuses on a high level of equity, insurance and social protection. According to analysts, the world today faces three models of economic development with significant weight in the world: the European, American and Asian. This study will focus on analyzing European development model, and a brief comparison with the United States. In addition, this study aims to highlight the relationship between efficiency and social equity that occurs in each submodel in part of the European model, given that social and economic performance in the EU are not homogeneous. To achieve this, it is necessary to analyze different indicators related to social equity and efficiency respectively, to observe the performance of each submodel individually. The article analyzes data to determine submodel performance according to social equity and economic efficiency.
THE ECONOMIC EFFICIENCY OF INVESTMENT  [PDF]
SIMONA CRISTINA COSTEA
Anale : Seria ?tiin?e Economice. Timi?oara , 2012,
Abstract: Economic efficiency is the main quality factor of economic growth because through it one can achieve an absolute performance enhancement involving the same amount of effort. In a market driven economy efficiency has to be estimated at a microeconomic level as well as with respect to the national economy Investments play a key role in the economy as an intermediate between the production of goods and services and the consumer itself being a factor of influence regarding the demand as well as the offer. Investment provides the financial support for promoting technical-scientific progress in various fields of activity.
The energy-saving modification program of lighting equipment based on the economic evaluation  [cached]
Yuan Yang,Wei-hua Li,Xin-zheng Zhang,Chu-qi Yang
International Journal of Computer Network and Information Security , 2011,
Abstract: Considering many lighting energy-saving modification programs have the phenomenon of diseconomy; this paper takes into account economic evaluation to solve this problem. The optimal program of total energy-saving benefit will be found under the limited investment according to economic evaluation of the price, life span and power consumption of lighting equipments. Firstly, the benefit ratio will be used to evaluate on the necessity of modification, and get the order. If the biggest benefit ratio exists in different equipments simultaneously, the better one will be selected in terms of relative payback period of investment. And on the basis, the relative remaining time is innovatively introduced into economic evaluation to determine the locations of modification. Then an example from a factory can prove that the program is workable.
Saving-Economic Growth Nexus In Nigeria, 1970-2007: Granger Causality And Co-Integration Analyses
Nurudeen ABU
Review of Economic and Business Studies (REBS) , 2010,
Abstract: The controversy surrounding the direction of causality between saving and economic growth motivated this study. The author employed the Granger-causality and co-integration techniques to analyze the relationship between saving and economic growth in Nigeria during the period 1970-2007. The Johansen co-integration test indicates that the variables (economic growth and saving) are co-integrated, and that a long-run equilibrium exists between them. In addition, the granger causality test reveals that causality runs from economic growth to saving, implying that economic growth precedes and granger causes saving. Thus, we reject the Solow’s hypothesis that saving precedes economic growth, and accept the Keynesian theory that t is economic growth that leads to higher saving. The author recommends that government and policy makers should employ policies that would accelerate economic growth so as to increase saving.
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