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500 articles for “rates”
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Research ArticleOpen accessEvery word in the titleAn Overview on Studying 222Rn Exhalation Rates using Passive Technique Solid-State Nuclear Track DetectorsMohamed Abd-ElzaherProblem statement: Uranium is a radiotoxic element found in trace quantities in alomost all natural accurring materials like soil, rock. Radon an inert radioactive gas whose predecessor in uranium, is emitted from soil beneath the house and from building materials. Accurate knowledge of exhalation rate plays an important role in characterization of the radon source strength in some building materials … …American Journal of Applied Sciences, Vol. 9, Issue 10 · 17 Aug 2012 · 8,510 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleMeasuring Predictors of Student Retention RatesAllen L. Webster, Vince E. ShowersProblem statement: Colleges and universities place more emphasis on student retention rates than ever before. Educational institutions are intensifying efforts to discourage student departure and preserve their established student base. Economic pressures that bear heavily on academic administration make such efforts highly critical for institutional success. Research on this vital issue is especially important due to the vigorous competition among … …American Journal of Economics and Business Administration, Vol. 3, Issue 2 · 7 Apr 2011 · 7,254 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of Multicollinearity on Power Rates of the Ordinary Least Squares EstimatorsO.O. Alabi, Kayode Ayinde, T.O. OlatayoInferences on the parameter estimates of Ordinary Least Square (OLS) estimator in regression model when regressors exhibit multicollinearity is a problem in that large standard errors of the regression coefficients which cause low t-statistic value often result into the acceptance of the null hypothesis. This paper, therefore, makes efforts to investigate the effect of multicollinearity on the power rates of … …Journal of Mathematics and Statistics, Vol. 4, Issue 2 · 30 Jun 2008 · 7,880 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDetermining Causes of Gully Erosion and Associated Rates of Change in South-East Nigeria, using a Remote Sensing and GIS MethodologySylvanus IroThe study of gully development on a regional scale is currently threatened by the intrinsic costs associated with steady field tracking and monitoring and the lack of historic measurements to perform time series analysis. The research objective is to develop a low-cost GIS and Remote Sensing methodology for monitoring and quantifying gully erosion and development over time, identifying the impact … …American Journal of Environmental Sciences, Vol. 16, Issue 5 · 22 Oct 2020 · 7,431 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of Animal Manure Application Rates on Soil Moisture Conservation at, Somali Regional State, EthiopiaTekilil WoldeThe Ethiopian economy is mainly agrarian. It employs 85% of the population and contributes 45% of the gross domestic product and 90% of the national export earnings but agriculture in Ethiopia is dominated by rainfed farming with low productivity specially dry land part of the country like Somali region. As a result, crops have severe moisture stress through their growth … …American Journal of Agricultural and Biological Sciences, Vol. 14, Issue 1 · 15 Aug 2019 · 7,744 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleIMPACT OF DEREGULATION OF THE JAMAICA MOBILE PHONE MARKET ON CALLING RATESAbdullahi O. AbdulkadriDeregulation of the telecommunications industry has led to a phenomenal growth in mobile phone service subscription in Jamaica with penetration rate reaching more than 100% within a decade of the start of deregulation. Consumers have benefited with significant cuts in rates for mobile phone service following the entry of new service providers. This study models the competition among old and … …American Journal of Economics and Business Administration, Vol. 6, Issue 2 · 26 Aug 2014 · 7,691 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDiarrhea in Pre-Weaned Calves: Relative Risk Rates for Morbidity and Mortality in 13 Commercial Farms of Hot Arid ZoneM. A. Razzaque, T. Al-Mutawa, S. A. MohammedProblem statement: In many hot arid countries, pregnant Holstein Friesian heifers are imported for herd replacement. The calves obtained from exotic cows are exposed to adverse climate in feedlot system resulting in very high morbidity and mortality rates. Diarrhea, dehydration and deaths are causing a major loss to the producers. This study examines the Risk Rates (RR) for morbidity and … …American Journal of Animal and Veterinary Sciences, Vol. 5, Issue 3 · 30 Sep 2010 · 7,616 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleSpatial Variability of Irrigation Water Percolation Rates and Its Relation to Rice ProductivityW. Aimrun, M.S.M. Amin, A. GholizadehProblem statement: Study on spatial variability of vertical saturated hydraulic conductivity or percolation loss was conducted within a plot of an area of 1.2 ha paddy plot to find out the relationship between percolation rate and rice productivity. A paddy soil condition that permits percolation rate of 10-20 mm irrigation water day-1 was recommended in order to get high yield … …American Journal of Applied Sciences, Vol. 7, Issue 1 · 31 Jan 2010 · 8,146 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleInvestigating the Causality Granger Relationship between the Rates of Interest and Inflation in IranMansour Zarra Nezhad, Ruhollah ZareaWith regard to the importance of the rates of interest and inflation in economy, this paper aims at investigating the Granger causality relationship between the rates of interest and inflation in Iran’s economy. Toda and Yamamoto’s Granger test of causality as well as ARDL approach were used to test the hypothesis that the rate of interest is the Granger cause … …Journal of Social Sciences, Vol. 3, Issue 4 · 31 Dec 2007 · 7,696 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Effect of Post-Mating Progesterone Supplement on Pregnancy and Lambing Rates of Ewes Bred Out-of-seasonMustafa Q. Husein, Mohammed M. Ababneh, Jomana F. HijaziThe objective of this experiment was to determine whether post-mating progesterone (P4) supplement improves pregnancy and lambing rates in ewes bred during the seasonal anestrous period. In June, 39 synchronized to estrus Awassi ewes were allowed with four harnessed fertile rams immediately following CIDR-G device removal (day 0 and 0 hour). Five days following ram introduction, ewes were randomly assigned … …American Journal of Animal and Veterinary Sciences, Vol. 2, Issue 3 · 31 Dec 2007 · 6,899 accessesView PDFCite