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342 results for “statistical method”
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Research ArticleOpen accessIn the abstractEffect of Mixing Urea with Humic Acid and Acid Sulphate Soil on Ammonia Loss, Exchangeable Ammonium and Available NitrateMohd Taufik Mohd Yusuff, Osumanu Haruna Ahmed, Nik Muhamad Ab MajidProblem statement: Ammonia loss due to rapid hydrolysis of urea in soil following surface application can be substantial. Ammonia loss in agriculture is estimated to be 1 to 60%. This laboratory study compared the effect of three different urea-humic acid-acid sulphate soil mixtures on NH3 loss and soil ammonium and nitrate contents, with loss from surface applied urea without additives … …American Journal of Environmental Sciences, Vol. 5, Issue 5 · 31 Oct 2009 · 8,911 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Numerical Computation of Rational Structures and Asymptotic Standard Deviations in Causal Time Series DataConcepción González-Concepción, María Candelaria Gil-Fariña, Celina Pestano-GabinoProblem statement: The specific properties of data series are of primary importance in several sciences. In the field of time series analysis, several researchers have considered the rational approximation theory, particularly the Padé Approximation and Orthogonal Polynomials. Approach: In this study, an approach for the statistical significance of two numerical methods, the r-s and q-d algorithm, was proposed which made … …Journal of Mathematics and Statistics, Vol. 5, Issue 3 · 30 Sep 2009 · 7,054 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe State of Environmentally Sustainable Interior Design PracticeMihyun Kang, Denise A. GuerinProblem statement: Research that investigates how interior designers use environmentally sustainable interior design criteria in their design solutions has not been done. To provide a base to develop education strategies for sustainable interior design, this study examined the state of environmentally sustainable interior design practice. Approach: A national, Internet-based survey of interior design practitioners was conducted. To collect data, the … …American Journal of Environmental Sciences, Vol. 5, Issue 2 · 30 Apr 2009 · 10,391 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffects of Information Overload on Brazilian E-ConsumersRafael Lucian, Salomão Alencar de FariasProblem statement: E-commerce is a reality; Companies must consider this media as an important trade channel without distances between products and consumers. A key issue of e-commerce is how companies are disclosing information to its customers. This study aims to measure if there is relationship between the information overload in the virtual environment and the response of satisfaction and confusion … …American Journal of Economics and Business Administration, Vol. 1, Issue 1 · 31 Mar 2009 · 7,742 accessesView PDFCite
Research ArticleOpen accessIn the abstractChanges in Rural Areas and Regional DevelopmentHelen Theodoropoulou, Panagiotis KaldisThe present study examines how regional development has been affected by social, economic and environmental changes in three regions located in central Greece. These regions were affected significantly by social and economic changes, because of substantial new infrastructure development that took place related to a ski resort and agritourism establishments. Sample data were collected on the characteristics of residents and … …Journal of Social Sciences, Vol. 4, Issue 4 · 31 Dec 2008 · 7,823 accessesView PDFCite
Research ArticleOpen accessIn the abstractCharacterization of Maturity Level in Laying Hen Manure by Chemical and Thermogravimetric AnalysisAlice Dall’Ara, Francesco Antolini, Laura Billi et al.This study aims at investigating maturity levels in manure from laying hens in order to encourage its agronomic re-utilization. In fact the use of unstable/insufficiently mature manure could potentially damage both soils and crops. Effective, easy to reproduce methods are needed in order to assess bio-stabilisation and maturity levels, particularly for biomass that has not undergone conventional composting. This study … …American Journal of Environmental Sciences, Vol. 4, Issue 4 · 31 Aug 2008 · 6,542 accessesView PDFCite
Research ArticleOpen accessIn the abstractMalaysian Students' Preferences to Online Products and Services on the Internet: An empirical studyPaul H.P. Yeow, Ali Khatibi, Jayanty KuppusamyThe study aims to discover the preferences of Student Internet Users (SIUs) for Online Products and Services (OPS) and research into the demographic factors that affect SIUs’ preferences. A questionnaire survey was conducted on 800 SIUs from private institutions of higher learning in Malaysia, an Industrially Developing Country (IDC). Parametric statistical methods were used to analyze the survey data. It … …Journal of Social Sciences, Vol. 4, Issue 2 · 30 Jun 2008 · 7,944 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Infrastructure Development on Income Generation: A Study on Jamuna Bridge Project in BangladeshShaikh MoniruzzamanThis research is an attempt to examine the impact of infrastructure development on income generation in the north eastern region of Bangladesh which enjoyed a wide range of amenities after the construction of Jamuna Bridge in 1998. The application of 'difference in difference estimator' using the pooled household level income data of the treatment and control area in the pre … …Journal of Social Sciences, Vol. 4, Issue 2 · 30 Jun 2008 · 8,371 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Role of Quality Control and Everyone’s Participation in Japan to Prevent Pollution During Last Five DecadesMohammed Matouq, Nasir Kloub, Kazue InoueEconomic Growth in Japan after World War II was very remarkable and products from its manufacturing industry were widely accepted in the world market after productivity and quality of them were tremendously improved. On the other hand, Japan soon found itself in severe environmental deterioration, due to not being paid any attention to environment. However, that pollution from industry was … …American Journal of Applied Sciences, Vol. 4, Issue 1 · 30 Apr 2007 · 7,999 accessesView PDFCite
Research ArticleOpen accessIn the abstractEducational Attainment of Jordan's Population and Labor ForceMwafaq D. Al-KhaldiThe analysis of the educational attainment by Gender tells us about the general demand for education and qualitative change both in population and labor force. The term educational attainment used here refers to the actual level of education completed by a person as it is superior to the enrolment ratio - as a proxy for educational attainment - especially for … …Journal of Social Sciences, Vol. 2, Issue 1 · 31 Mar 2006 · 8,012 accessesView PDFCite