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301 results for “empirical study”
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Research ArticleOpen accessIn the abstractOptimization of the Geometrical Parameters of a Solar Bubble Pump for Absorption-Diffusion Cooling SystemsN. Dammak, B. Chaouachi, S. Gabsi, M. BourouisProblem statement: The objective of this study was to optimize the geometrical parameters of a bubble pump integrated in a solar flat plate collector. Approach: This solar bubble pump was part of an ammonia/water/helium (NH3/H2O/He) absorption-diffusion cooling system. Results: An empirical model was developed on the basis of momentum, mass, material equations and energy balances. The mathematical model was solved … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 4 · 5 Nov 2010 · 8,378 accessesView PDFCite
Research ArticleOpen accessIn the abstractSelected Soil Morphological, Mineralogical and Sesquioxide Properties of Rehabilitated and Secondary ForestsB. T. Saga, O. H. Ahmed, A. S. Jamaluddin et al.Problem statement: The tropical rain forests in Southeast Asia have been characterized by several researchers. However empirical data on soil characteristics under degraded forest land in tropical rain forest and rehabilitated program are limited. A study was conducted to evaluate the soil morphology, mineralogical and sesquioxide properties of a rehabilitated degraded forest land (19 years after it was planted with … …American Journal of Environmental Sciences, Vol. 6, Issue 4 · 31 Aug 2010 · 8,022 accessesView PDFCite
Research ArticleOpen accessIn the abstracte-Choupal: Hope or Hype?Neeraj Dangi, Harjit SinghProblem statement: This case looked at the cost benefit factor of e-Choupal model in rural India from socio-economic perspective since it is being projected as one of the models of rural empowerment. Questions were raised whether its growth both horizontally and vertically might be detrimental to sustainability of traditional agrarian economy. It also examined the role of ICT and government … …American Journal of Economics and Business Administration, Vol. 2, Issue 2 · 30 Jun 2010 · 8,336 accessesView PDFCite
Research ArticleOpen accessIn the abstractTo Investigation the Relationship between Monetary, Fiscal Policy and Economic Growth in Iran: Autoregressive Distributed Lag Approach to CointegrationAnvar Khosravi, Mohammad Sharif KarimiProblem statement: It is important for policy makers to find affect of monetary and fiscal policy on economic growth and to know how those impacts on growth to present a effective policies. Approach: We apply the bounds testing (ARDL) approach and to cointegration which is more appropriate for estimation in small sample studies. The data span for the study is … …American Journal of Applied Sciences, Vol. 7, Issue 3 · 31 Mar 2010 · 9,087 accessesView PDFCite
Research ArticleOpen accessIn the abstractImplementation of Multi-Centroid Moment Invariants in Thermal-Based Face Identification SystemKhairul Hamimah Abas, Osamu OnoProblem statement: Current paramount methods and approaches in face identification field rely on facial characteristics; such as location of eyes, length of nose and mouth, regardless the type of medium used to acquire the facial images. The visibility of these facial characteristics varies significantly with environmental factors (e.g., lighting elements). Various researches have been devoted to develop methodologies for addressing … …American Journal of Applied Sciences, Vol. 7, Issue 3 · 31 Mar 2010 · 7,168 accessesView PDFCite
Research ArticleOpen accessIn the abstractAre There Smaller Leverage Effects in Less-Developed Markets? Evidence from an Oil Exporting CountryMosayeb Phalavani, Parinaz EzzatiProblem statement: This study uses daily data from the Tehran Stock Market (TSM) to illustrate the nature of stock market volatility in an undeveloped and young stock market. Although most studies suggest that a negative shock to stock prices will generate more volatility than a positive shock of equal magnitude but there is no evidence of asymmetric effect in TSM. … …American Journal of Applied Sciences, Vol. 7, Issue 1 · 31 Jan 2010 · 7,521 accessesView PDFCite
Research ArticleOpen accessIn the abstractCharacterization of Bio-Oil: A By-Product from Slow Pyrolysis of Oil Palm Empty Fruit BunchesK. H. Khor, K. O. Lim, Z. A. ZainalProblem statement: Oil palm Empty Fruit Bunches (EFB) are abundant biomass in Malaysia. Studies about production of biofuels using slow pyrolysis of EFB are still lacking. So, this study was aimed to understand the physical and chemical properties of the bio-oil and its simple blends. Approach: EFB was slow pyrolysed with internal heating at terminal temperature of 600°C in a … …American Journal of Applied Sciences, Vol. 6, Issue 9 · 30 Sep 2009 · 8,024 accessesView PDFCite
Research ArticleOpen accessIn the abstractSustainable Regional DevelopmentHelen Theodoropoulou, Roido Mitoula, Malvina VamvakariProblem statement: Demographic changes have increased the social and cultural diversity of tourist areas with historical heritage and natural beauty in Greece, causing an expansion in the cultural and economic horizons of local people and producing at the same time conflicts in their interests, values and lifestyles. This research was focused in the concept of sustainable development in three areas … …Journal of Social Sciences, Vol. 5, Issue 2 · 30 Jun 2009 · 7,671 accessesView PDFCite
Research ArticleOpen accessIn the abstractComputable General Equilibrium Techniques for Carbon Tax ModelingAl-Amin, Chamhuri Siwar, Abdul HamidProblem statement: Lacking of proper environmental models environmental pollution is now a solemn problem in many developing countries particularly in Malaysia. Some empirical studies of worldwide reveal that imposition of a carbon tax significantly decreases carbon emissions and does not dramatically reduce economic growth. To our knowledge there has not been any research done to simulate the economic impact of … …American Journal of Environmental Sciences, Vol. 5, Issue 3 · 30 Jun 2009 · 6,954 accessesView PDFCite
Research ArticleOpen accessIn the abstractDeterminants of Non-farm Income Diversification in Developed Villages of BangladeshMohammad Abdul Malek, Koichi UsamiProblem statement: Though the Non-Farm Sector (NFS) has been prioritized in the national policy documents, empirical evidences based on the broader definition of the sector seem to be insufficient about its role both in income diversification and income distribution especially in segmented area of rural Bangladesh. Approach: We use income inequality Gini decomposition method for exploring the role of Non-Farm … …American Journal of Economics and Business Administration, Vol. 1, Issue 2 · 30 Jun 2009 · 8,361 accessesView PDFCite