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144 articles for “Estimates”
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Research ArticleOpen accessIn the abstractThe Burr X Nadarajah Haghighi Distribution: Statistical Properties and Application to the Exceedances of Flood Peaks DataHisham A.H. Elsayed, Haitham M. YousofIn this study, new version from the Nadarajah Haghighi model is proposed. The introduced model has a failure rate function that may change in different directions. Statistical properties of the new density function are derived along with the analysis of variance, Skewness and Kurtosis. Parameter estimates are obtained by the method of maximum likelihood. Illustration of real data set was … …Journal of Mathematics and Statistics, Vol. 15, Issue 1 · 14 Jul 2019 · 7,136 accessesView PDFCite
Review ArticleOpen accessIn the abstractChina Launches Its First Passenger AircraftRelly Victoria Virgil PetrescuC919, the passenger plane developed by China within a national project, was successfully launched at the inauguration of its flight. After a series of long delays, this is only the first step by which China is trying to penetrate the international aviation market. C919, developed and produced by Aircraft Corp. or COMAC in brief, was initially scheduled to be prepared … …Journal of Aircraft and Spacecraft Technology, Vol. 3, Issue 1 · 12 Apr 2019 · 6,888 accessesView PDFCite
Research ArticleOpen accessIn the abstractEvaluation of Subset Matching Methods: Evidence from a Monte Carlo Simulation StudyLateef Amusa, Temesgen Zewotir, Delia NorthIn the absence or infeasibility of experiments, matching methods have increasingly been used in making causal claims using observational data. This paper conducts a Monte Carlo simulation study, based on a household panel survey, to compare the performance of some widely used subset matching methods. The methods include the propensity score caliper matching, Mahalanobis distance matching, and coarsened exact matching. … …American Journal of Applied Sciences, Vol. 16, Issue 3 · 11 Apr 2019 · 7,745 accessesView PDFCite
Research ArticleOpen accessIn the abstractStatistical Modeling of Temperature Extremes Behaviour in GhanaTwumasi-Ankrah Sampson, Nyantakyi Agyei KwadwoThis paper focuses on modeling the extreme maximum temperature in Ghana using the extreme value theory. This is to inform decision-makers to help them plan appropriate risk mitigating measures to reduce the damage caused by drought. The block maxima with Generalized Extreme Value (GEV) and the General Pareto (GP) (with “all excesses” and decluster peaks) were used on 113 years … …Journal of Mathematics and Statistics, Vol. 14, Issue 1 · 10 Jan 2019 · 7,121 accessesView PDFCite
Research ArticleOpen accessIn the abstractOn the Comparison of Methods of Estimating Missing Values in Rectangular Lattice DesignsAbimibola V. Oladugba, Emmanuel O. Ossai, Tobias E. UgahMissing values occur in almost all research which lead to ambiguity in data analysis. It becomes necessary that appropriate consideration is made in order to provide an efficient and valid analysis. Researchers have developed and compared a variety of methods of estimating missing values in experimental designs; however, no research work has derived and compared methods of estimating missing values, … …Journal of Mathematics and Statistics, Vol. 14, Issue 1 · 11 Oct 2018 · 7,048 accessesView PDFCite
Research ArticleOpen accessIn the abstractEstimating the Scouring Depth of Bridge Pier Using Self-Organizing Neural Networks (SOM)Abolfazl Rafat, Gholam Abbas Barani, Amineh NaseriScouring is caused as a result of erosion of river bed by water flow and materials carried by water. This research estimates the scouring depth using self-organizing neural network (SOM). The obtained findings were compared with findings of other models. It was found that self- organizing neural network (SOM) has higher correlation coefficient (0.98), compared to other methods. It was … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 4 · 27 Nov 2017 · 7,512 accessesView PDFCite
Research ArticleOpen accessIn the abstractGO-NGO Support in Selected Char Areas of Sirajganj District in Bangladesh: Impact on Crop Profitability and Farmers’ Income GenerationAurup Ratan Dhar, Arifa Jannat, Md. Monirul IslamThe study was carried out to elucidate the GO-NGO support on farmers’ income generation in selected char areas of Sirajganj district. Following purposive sampling technique, a total of 60 farmers (30 non-supported and 30 GO-NGO supported) were selected for the study. Descriptive statistics, mathematical and statistical analyses were used to analyze the collected data from field survey method. The average … …American Journal of Agricultural and Biological Sciences, Vol. 12, Issue 3 · 23 Oct 2017 · 8,516 accessesView PDFCite
Research ArticleOpen accessIn the abstractInvestigation and Comparison of the Quantitative and Qualitative Frequency Distribution of the RiversVijay P. Singh, Mohsen Ghane, Kaveh Ostad-Ali-Askari et al.The entrance of pollutants from human activities to the surface water has seriously threatened the quality of water. TDS is an important qualitative parameter of water that describes the water salinity by measuring the concentration of total dissolved solids. First, using TDS and discharge data of the Cuyahoga River, Ohio, the partial and annual data sets were obtained. Then, partial … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 4 · 16 Oct 2017 · 8,495 accessesView PDFCite
InvestigationOpen accessIn the abstractA Proposal for Standardized Data Attribution and Ownership in the Cloud EnvironmentTalal Talib JameelSince the earliest days of cloud computing there has been a steady migration of data from local data stores to the cloud. As more and more cloud platforms become available, this inflow of data has only increased dramatically. By some estimates, "the cloud" will hold 50% of all data by 2020. Localized management of data is typically handled using tools, … …American Journal of Applied Sciences, Vol. 13, Issue 12 · 27 Dec 2016 · 7,041 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 · 7,495 accessesView PDFCite