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502 articles for “two sample”
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Research ArticleOpen accessEvery word in the titleA Test for Two-Sample Repeated Measures Designs: Effect of High-Dimensional DataBoonyarit Choopradit, Samruam ChongcharoenProblem statement: High-dimensional repeated measures data are increasingly encountered in various areas of modern science since classical multivariate statistics, e.g,. Hotelling’s T2, are not well defined in the case of high-dimensional data. Approach: In this study, the test statistics with no specific form of covariance matrix for analyzing high-dimensional two-sample repeated measures designs with common equal covariance are proposed. The … …Journal of Mathematics and Statistics, Vol. 7, Issue 4 · 28 Oct 2011 · 7,328 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleFuzzy Parametric of Sample Selection Model Using Heckman Two-Step Estimation ModelsM. S. Lola, A. A. Kamil, M.T. Abu OsmanProblem statement: It is well known that, the standard approach to estimating a sample selection models shows an inconsistent estimation results if the distributional assumption are incorrect. Approach: An important progress in the last decade to develop an alternative to overcome the deficiency is through the used of semi-parametric method. However, the usage of semi-parametric approach still does not cover … …American Journal of Applied Sciences, Vol. 6, Issue 10 · 31 Oct 2009 · 6,764 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleComparative Study of Antibacterial Susceptibility Patterns of the Bacteria Isolated from Patients' Blood Samples over Two PeriodsAziz Japoni, Mehdi Kalani, Abdolvahab Alborzi et al.Problem statement: Due to continuous changes in the frequencies and antibacterial susceptibility patterns of nosocomial pathogens, periodical surveillance of these fluctuations could help the clinicians to treat hospitalized patients more efficiently whenever empirical therapies need to be considered. This study was conducted to compare the prevalence of the bacteria recovered from bloodstream samples by Bactec 9240, over the two periods … …American Journal of Infectious Diseases, Vol. 7, Issue 1 · 27 Apr 2011 · 8,158 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleComparison of Two Analytical Techniques For Lead Determination in Soils and Mosses SamplesAlbert Maxhuni, Pranvera Lazo, Musaj PaqariziThe aim of this study was to compare the results of the lead levels obtained by two different techniques in the soil and mosses samples taken from the entire territory of the Republic of Kosovo. The atmospheric deposition of lead through the biomonitoring technique was done for the first time in Kosovo by using quartz tube flame Atomic Absorption Spectroscopy … …American Journal of Environmental Sciences, Vol. 8, Issue 4 · 22 Jun 2012 · 6,897 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEIAV Effectiveness Detection by Nested PCR Comparing two Different Samples: PBMCs and Bronchoalveolar WashElizangela Maira Dos Santos, Pedro Moreira Couto Motta, Marcos Bryan Heinemann et al.Problem statement: Equine Infectious Anemia (EIA) is a chronic, relapsing infectious disease of horses caused by Equine Infectious Anemia Virus (EIAV). The objective of this experiment was compared EIAV effectiveness detection in Peripheral Blood Mononuclear Cells (PBMCs) and Bronchoalveolar wash (BAW) from naturally infected horses. Approach: Fifty seven DNA samples isolated from PBMCs and BAW of naturally infected animals were … …American Journal of Animal and Veterinary Sciences, Vol. 5, Issue 3 · 30 Sep 2010 · 7,462 accessesView PDFCite
Research ArticleOpen accessIn the keywordsA Test on the Multivariate Behrens–Fisher Problem in High–Dimensional Data by Block Covariance EstimationParanut Sukcharoen, Samruam ChongcharoenIn this paper, we proposed a new testing statistic for testing the equality of mean vectors from two multivariate normal populations when the covariance matrices are unknown and unequal in high–dimensional data. A new test is proposed based on the idea of keeping more information from the sample covariance matrices as much as possible. A proposed test is invariant under … …Journal of Mathematics and Statistics, Vol. 15, Issue 1 · 2 Apr 2019 · 7,369 accessesView PDFCite
Research ArticleOpen accessIn the abstractEnhancing Sweet Corn Growth and Yield through the Integrated Application of Bioneensis Biofertilizer and Rice Husk BiocharSumihar Hutapea, Saipul Sihotang, Adi Fathul Qohar et al.Sweet corn is an essential agricultural product in Indonesia and contributes to national food security. Consequently, numerous strategies can be implemented to increase the yield of sweet corn, such as intensified fertilization. While organic fertilizers like biofertilizers and biochar have shown potential to enhance crop growth, their combined effects on sweet corn, particularly under Indonesian conditions, are understudied. This study … …OnLine Journal of Biological Sciences, Vol. 25, Issue 4 · 6 Feb 2026 · 1,929 accessesView PDFCite
Research ArticleOpen accessIn the abstractEvaluation of NPK Fertilizer Content Derived from Wild Plant DiversityKhosi'in, Nur Hidayat, Zulfikri Muhammad, Endang HaryantoThis research has the background of understanding the diversity of wild plants that can produce organic NPK fertilizer that can be utilized by the community. The purpose of this research is to produce NPK fertilizer from wild plants and to determine the nitrogen, phosphate, and potassium content in the organic fertilizer derived from wild plants. The type of this research … …OnLine Journal of Biological Sciences, Vol. 25, Issue 2 · 20 Jun 2025 · 4,225 accessesView PDFCite
Research ArticleOpen accessIn the abstractNear Infrared Spectroscopy Identification Method for Five Chemical Types of Cinnamomum camphoraBailian Tu, Yueting Zhang, Yongjie Zheng et al.To more quickly and accurately identify the five chemical types of Cinnamomum camphora, a desktop and portable near-infrared spectrometer was used to collect the near-infrared spectra of the leaves of the five chemical types of C. camphora. Combined with chemometric methods, the near-infrared spectra of different chemical types of C. camphora were discriminated and analyzed. Using a desktop near-infrared spectrometer … …American Journal of Biochemistry and Biotechnology, Vol. 21, Issue 1 · 20 Feb 2025 · 5,288 accessesView PDFCite
Research ArticleOpen accessIn the abstractComputational Prediction of Diabetic Nephropathy-Associated Comorbidities and Their Key Genes by Analyzing RNA-Seq DataChaity Paul, Md. Ashiq Uddin, Rupa Dey et al.Diabetic Nephropathy (DN) is a complex health condition that leads to various kidney diseases. According to the World Health Organization, over 2 million deaths have been reported due to diabetes and diabetes related kidney diseases in 2021. And at the recent 78th World Health Assembly, chronic kidney disease was reported to be one of the most common diabetes-related complications, and … …OnLine Journal of Biological Sciences, Vol. 26, Issue 2 · 19 May 2026 · 1,667 accessesView PDFCite