Research ArticleOpen accessEvery word in the titleCost Elasticities of Reliability and MTTF for k-out-of-n SystemsAli Muhammad Rushdi, Abdulaziz Efain AlsulamiThe application of the concept of cost elasticity of reliability was extended from the parallel system to the partially redundant or k-out-of-n:G(F) system (or k-out-of-n system, for short). An expression for the cost elasticity of reliability was derived for a general k-out-of-n system. The expression yielded acceptable results for a wide range of values for k, n, and component reliability. … …Journal of Mathematics and Statistics, Vol. 3, Issue 3 · 30 Sep 2007 · 7,295 accessesView PDFCite
Research ArticleOpen accessIn the keywordsAggregate Import Demand and Expenditure Components in GhanaOteng-Abayie Eric Fosu, Frimpong Joseph MagnusThe behaviour of Ghana’s imports during the period 1970-2002 was studied using disaggregated expenditure components of total national income. We used newly developed bounds testing approach to cointegration and estimated an error correction model to separate the short- and long-run elements of the import demand relationship. The study revealed inelastic import demand for all the expenditure components and relative price. … …Journal of Social Sciences, Vol. 4, Issue 1 · 31 Mar 2008 · 7,766 accessesView PDFCite
Research ArticleOpen accessIn the abstractClimate-Driven Productivity Responses and Implications for Genetic Adaptation and Breeding of Boreal Trees in KazakhstanZhadyra Baigazakova, Kuralay Mazarzhanova, Asset Satayev et al.Kazakhstan’s boreal and forest-steppe forests form the southern ecotonal edge of the West Siberian taiga, where relatively small changes in heat and moisture can trigger disproportionate impacts on tree growth, mortality, and regeneration. Although forests cover only ~4% of Kazakhstan, they provide critical ecosystem services: stabilizing hydrological regimes, buffering microclimates, protecting agricultural lands from wind and water erosion, and supporting … …OnLine Journal of Biological Sciences, Vol. 26, Issue 3 · 10 Aug 2026 · 709 accessesView PDFCite
Research ArticleOpen accessIn the abstractAn Empirical Analysis of Supply Response of Rubber in MalaysiaGhulam Mustafa, Ismail Abd Latif, Henry EgwumaSupply response of rubber to changes in economic incentives is analysed using co-integration approach. Time series data is taken for the period 1990 to 2014 and the vector error correction model framework has been applied. The empirical results confirmed the existence of a unique long-run equilibrium relationship among planted acreage, the relative price of rubber and price of fertilizer. Further, … …American Journal of Agricultural and Biological Sciences, Vol. 11, Issue 4 · 25 Nov 2016 · 7,493 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Potentialof Renewable Energy: Using The Environmental Kuznets Curve ModelJamalludin Sulaiman, Azlinda Azman, Behnaz SabooriThis study examines the potential of Renewable Energy Sources (RES) in reducing the impact of carbon emission in Malaysia and the Greenhouse Gas (GHG) emissions, which leads to global warming. Using the Environmental Kuznets Curve (EKC) hypothesis, this study analyses the impact of electricity generated using RES on the environment and trade openness for the period 1980-2009. Using the Autoregressive … …American Journal of Environmental Sciences, Vol. 9, Issue 2 · 13 Mar 2013 · 14,772 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Determinants of Agricultural Production and Profitability in Akoko Land, Ondo-State, NigeriaFasoranti Olayiwola OlujenyoThe study considered the determinants of agricultural production and profitability with special reference to maize production in Akoko North East and South West Local Government Areas of Ondo-State. Data collection was through well structured questionnaire administered on 100 respondents selected through random sampling technique. The methods of analysis used were descriptive statistics, gross margin analysis and production function analysis using … …Journal of Social Sciences, Vol. 4, Issue 1 · 31 Mar 2008 · 8,806 accessesView PDFCite