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Relevant bibliographies by topics / Two samples

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Academic literature on the topic 'Two samples'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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Journal articles on the topic "Two samples"

1

Zhao, Qingyuan, Jingshu Wang, Wes Spiller, Jack Bowden, and Dylan S. Small. "Two-Sample Instrumental Variable Analyses Using Heterogeneous Samples." Statistical Science 34, no. 2 (2019): 317–33. http://dx.doi.org/10.1214/18-sts692.

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Bohn, Lora L., and Douglas A. Wolfe. "Nonparametric Two-Sample Procedures for Ranked-Set Samples Data." Journal of the American Statistical Association 87, no. 418 (1992): 552–61. http://dx.doi.org/10.1080/01621459.1992.10475239.

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Grjibovski, A. M., M. A. Gorbatova, A. N. Narkevich, and K. A. Vinogradov. "Required sample size for comparing means in two paired samples." Marine Medicine 6, no. 4 (2021): 82–88. http://dx.doi.org/10.22328/2413-5747-2020-6-4-82-88.

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This paper continues our series of articles for beginners on required sample size for the most common basic statistical tests used in biomedical research. The most common statistical test for comparing means in paired samples is Student’s paired t-test. In this paper we present a simple algorithm for calculating required sample size for comparing two means in paired samples. As in our earlier papers we demonstrate how to perform calculations using WinPepi and Stata software. Moreover, we have created a table with calculated minimal sample sizes required for using Student’s t-tests for differen

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Grjibovski, A. M., M. A. Gorbatova, A. N. Narkevich, and K. A. Vinogradov. "REQUIRED SAMPLE SIZE FOR COMPARING PROPORTIONS IN TWO INDEPENDENT SAMPLES." Marine Medicine 6, no. 3 (2020): 76–83. http://dx.doi.org/10.22328/2413-5747-2020-6-3-76-83.

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This paper continues our series of articles on required sample size for the most common basic statistical tests used in biomedical research. Sample size calculations are rarely performed in research planning in Russia often resulting in Type II errors, i.e. on acceptance on false null hypothesis due to insufficient sample size. The most common statistical test for analyzing proportions in independent samples is Pearson’s chi-squared test. In this paper we present a simple algorithm for calculating required sample size for comparing two independent proportions. In addition to manual calculation

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Qiu, Minna, Jian Zhang, Jiayan Yang, and Liying Ye. "Fusing Two Kinds of Virtual Samples for Small Sample Face Recognition." Mathematical Problems in Engineering 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/280318.

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Face recognition has become a very active field of biometrics. Different pictures of the same face might include various changes of expressions, poses, and illumination. However, a face recognition system usually suffers from the problem that nonsufficient training samples cannot convey these possible changes effectively. The main reason is that a system has only limited storage space and limited time to capture training samples. Many previous literatures ignored the problem of nonsufficient training samples. In this paper, we overcome the insufficiency of training sample size problem by fusin

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Gurevich, Gregory, and Albert Vexler. "A two-sample empirical likelihood ratio test based on samples entropy." Statistics and Computing 21, no. 4 (2010): 657–70. http://dx.doi.org/10.1007/s11222-010-9199-7.

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SHOGAKI, Takaharu, and Yoshihito NAKANO. "Quality of samples obtained from a two-chambered hydraulic piston cone sampler." Jiban Kogaku Janaru (Japanese Geotechnical Journal) 5, no. 2 (2010): 363–75. http://dx.doi.org/10.3208/jgs.5.363.

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Zhang, Kai, Qionglin Liang, Xiaoni Ai, Ping Hu, Yiming Wang, and Guoan Luo. "Comprehensive Two-Dimensional Manipulations of Picoliter Microfluidic Droplets Sampled from Nanoliter Samples." Analytical Chemistry 83, no. 20 (2011): 8029–34. http://dx.doi.org/10.1021/ac2017458.

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Kumar, Narinder, and Gobind P. Mehta. "Simultaneous Testing For The Goodness Of Fit To Two Or More Samples." MATHEMATICAL JOURNAL OF INTERDISCIPLINARY SCIENCES 1, no. 1 (2012): 17–22. http://dx.doi.org/10.15415/mjis.2012.11001.

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Ozturk, Omer, and N. Balakrishnan. "Exact two-sample nonparametric test for quantile difference between two populations based on ranked set samples." Annals of the Institute of Statistical Mathematics 61, no. 1 (2007): 235–49. http://dx.doi.org/10.1007/s10463-007-0141-5.

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Dissertations / Theses on the topic "Two samples"

1

Hsu, Kuei-Ling C. "Variability of two sampling methods in plaque samples." Thesis, Birmingham, Ala. : University of Alabama at Birmingham, 2008. https://www.mhsl.uab.edu/dt/2008m/hsu.pdf.

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Gómez, García-Donas Julia. "Age estimation on two Mediterranean samples using rib histomorphometry." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31496.

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Estimation of age is a crucial step for the identification of unknown individuals. Age is commonly assessed through macroscopic analytical methods based on the gross-examination of age degenerative changes in the skeleton. The choice of the methods relies on the taphonomic condition of the human remains and/or the skeletal element that is available. In cases of very fragmented bones, microscopic techniques remain one of the few approaches to estimate age. Thus, many histological age estimation methods have been developed for different bones and on different samples in the last forty years. Num

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Barton, William H. "COMPARISON OF TWO SAMPLES BY A NONPARAMETRIC LIKELIHOOD-RATIO TEST." UKnowledge, 2010. http://uknowledge.uky.edu/gradschool_diss/99.

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In this dissertation we present a novel computational method, as well as its software implementation, to compare two samples by a nonparametric likelihood-ratio test. The basis of the comparison is a mean-type hypothesis. The software is written in the R-language [4]. The two samples are assumed to be independent. Their distributions, which are assumed to be unknown, may be discrete or continuous. The samples may be uncensored, right-censored, left-censored, or doubly-censored. Two software programs are offered. The first program covers the case of a single mean-type hypothesis. The second pro

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Bohn, Lora L. "A nonparametric approach for ranked-set samples from two populations /." The Ohio State University, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487775034177341.

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Cirak, Mustafa. "Flocculation Behavior Of Two Different Clay Samples From Kirka Tincal Deposit." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612381/index.pdf.

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Olafuyi, Olalekan Adisa Petroleum Engineering Faculty of Engineering UNSW. "Experimental investigation of two-phase flow properties of small core samples." Awarded by:University of New South Wales. Petroleum Engineering, 2008. http://handle.unsw.edu.au/1959.4/43391.

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This thesis presents an experimental investigation of two-phase flow properties of porous rock samples having different scales ranging from micro-CT imaging to conventional core plug scales. Advances in micro-CT imaging of porous materials provide the opportunity to extract representative networks from the images. This improves the predictive capability of porescale network models to predict multiphase flow properties. However, all these predictions need to be validated with laboratory data. Micro-CT imaging is currently limited to small sample sizes, having bulk volumes of the order of 0.1 cm

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Stone, Margaret A. "Screening for Helicobacter pylori : studies in two population samples from central England." Thesis, University of Leicester, 1998. http://hdl.handle.net/2381/29575.

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If it is clearly demonstrated that eradicating Helicobacter pylori (H pylori) in asymptomatic subjects would lead to a reduction in morbidity and mortality, population screening may become justified. It must also, however, be shown that prevalence of infection can be effectively reduced; these studies addressed the hypothesis that this can be achieved through community screening and eradication. A serological screening test for infection with H. pylori was offered in two community programmes in Market Harborough and Belgrave. Those testing positive were offered a prescription for eradication t

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Massimino, Simona. "Emotion Regulation And Personological Profile In Two Samples Of High-Risk Sports." Doctoral thesis, Università di Catania, 2016. http://hdl.handle.net/10761/3955.

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The present study examined the personological characteristics that define two groups of experienced sportspeople, skydivers and cavers, with the aim to identify the personality factors that may be good predictors of risk. Moreover, the present study examined whether and how the skydiving and caving, high-risk sports, can affect their control of emotions, anxiety and mood. To carry out the study, 23 skydivers and 34 cavers were asked to complete four questionnaires: Big Five Questionnaire-2, Profile of Mood States, State-Trait Anxiety Inventory Forma-Y and Risk Taking Inventory. The results con

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Bhatta, Dilli. "A Bayesian Test of Independence for Two-way Contingency Tables Under Cluster Sampling." Digital WPI, 2013. https://digitalcommons.wpi.edu/etd-dissertations/128.

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We consider a Bayesian approach to the study of independence in a two-way contingency table obtained from a two-stage cluster sampling design. We study the association between two categorical variables when (a) there are no covariates and (b) there are covariates at both unit and cluster levels. Our main idea for the Bayesian test of independence is to convert the cluster sample into an equivalent simple random sample which provides a surrogate of the original sample. Then, this surrogate sample is used to compute the Bayes factor to make an inference about independence. For the test of indepe

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Lorenc, Boris. "Two topics in survey methodology : modelling the response process in establishment surveys : inference from nonprobability samples using the double samples setup /." Stockholm : Department of Statistics, Stockholms University, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1063.

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Books on the topic "Two samples"

1

Hemingway, Bruce S. Heat capacity and thermodynamic properties for two samples of prismatine. U.S. Dept. of the Interior, U.S. Geological Survey, 1996.

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Severson, R. C. Partitioning of elements between two size sediment fractions in samples from nineteen areas of the western United States. U.S. Geological Survey, 1991.

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Severson, R. C. Partitioning of elements between two size sediment fractions in samples from nineteen areas of the western United States. U.S. Geological Survey, 1991.

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Severson, R. C. Partitioning of elements between two size sediment fractions in samples from nineteen areas of the western United States. U.S. Geological Survey, 1991.

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Campbell, P. Comparison of two methods commonly used at the experimental lakes area for collecting chemistry samples from vertically stratified lakes. Central and Arctic Region, Dept. of Fisheries and Oceans, 1993.

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Angrist, Joshua David. The effect of age at school entry on educational attainment: An application of instrumental variables with moments from two samples. National Bureau of Economic Research, 1990.

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C, Lewis Roger, and Geological Survey (U.S.), eds. Distribution and taxonomy of diatoms (bacillariophyta) in surface samples and a two-meter core from Winslow Marsh, Bainbridge Island, Washington. U.S. Dept. of the Interior, U.S. Geological Survey, 1996.

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C, Clark A., Carey Mary Alice, and Geological Survey (U.S.), eds. Analyses of seven core samples from two Tertiary coal beds in the Sagwon Member of the Sagavanirktok Formation, North Slope, Alaska. U.S. Dept. of the Interior, Geological Survey, 1988.

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Griepink, B. The additional certification of the content (mass fraction) of iodine in two spiked samples of skim milk powder: CRM no.150-151. Commission of the European Communities, 1986.

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Inoue, Atsushi. Two-sample instrumental variables estimators. National Bureau of Economic Research, 2005.

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Book chapters on the topic "Two samples"

1

Brunner, Edgar, Arne C. Bathke, and Frank Konietschke. "Two Samples." In Rank and Pseudo-Rank Procedures for Independent Observations in Factorial Designs. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-02914-2_3.

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Vidakovic, Brani. "Two Samples." In Springer Texts in Statistics. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4614-0394-4_10.

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Marco, Antonio. "Two Samples." In A Pen and Paper Introduction to Statistics. Chapman and Hall/CRC, 2023. http://dx.doi.org/10.1201/9781003398820-7.

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Dekking, Frederik Michel, Cornelis Kraaikamp, Hendrik Paul Lopuhaä, and Ludolf Erwin Meester. "Comparing two samples." In A Modern Introduction to Probability and Statistics. Springer London, 2005. http://dx.doi.org/10.1007/1-84628-168-7_28.

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Gerbing, David W. "Compare Two Samples." In R Data Analysis without Programming, 2nd ed. Routledge, 2023. http://dx.doi.org/10.4324/9781003278412-7.

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Toutenburg, Helge, and Shalabh. "Comparison of Two Samples." In Springer Texts in Statistics. Springer New York, 2009. http://dx.doi.org/10.1007/978-1-4419-1148-3_2.

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Toutenburg, Helge. "Comparison of Two Samples." In Experimental Design and Model Choice. Physica-Verlag HD, 1995. http://dx.doi.org/10.1007/978-3-642-52498-1_2.

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Marco, Antonio. "More Than Two Samples." In A Pen and Paper Introduction to Statistics. Chapman and Hall/CRC, 2023. http://dx.doi.org/10.1201/9781003398820-9.

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Caulcutt, Roland. "Testing and estimation: two samples." In Statistics in Research and Development. Springer US, 1991. http://dx.doi.org/10.1007/978-1-4899-2943-3_5.

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Behnen, Konrad, and Georg Neuhaus. "Two samples differing in location." In Teubner Skripten zur Mathematischen Stochastik. Vieweg+Teubner Verlag, 1989. http://dx.doi.org/10.1007/978-3-322-94762-8_3.

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Conference papers on the topic "Two samples"

1

Zhang, Jiajing, Kun Zou, Jinlan Chen, and Tinghuai Ma. "TCAS: A Two-Channel Text Classification Model Based on Adversarial Samples." In 2024 Prognostics and System Health Management Conference (PHM). IEEE, 2024. http://dx.doi.org/10.1109/phm61473.2024.00068.

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Presuel-Moreno, Francisco J., and Santiago Zapata. "Corrosion Propagation Monitoring of Legacy Samples and Forensic Analysis on Selected Samples." In CONFERENCE 2025. AMPP, 2025. https://doi.org/10.5006/c2025-00420.

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Abstract As part of a recent experimental campaign several samples prepared in 1994 with various concrete compositions were terminated. These samples were exposed outdoors to seawater wet/dry cycles from 1994 till 2019, and since then to outdoor marine exposure. The remaining samples were monitored since 2021 with galvanostatic pulse measurements and more recently using a commercial device. The terminated samples showed cracks on the concrete surface, a negative rebar potential and a high corrosion rate. One or more rebars were removed from the selected samples. In some cases, the three top re

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Chahmi, Abdelghani. "Characterization of Two Samples (Fe Si GO and Fe Si NGO) Using the Measurement Device." In 2024 3rd International Conference on Advanced Electrical Engineering (ICAEE). IEEE, 2024. https://doi.org/10.1109/icaee61760.2024.10783393.

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Sharma, Mohita, Yin Shen, Nicole Taylor, Danika Nicoletti, Lisa Gieg, and Jennifer Sargent. "Impact of Preservation Method, Storage Temperature, and Processing Time on Microbiological Community Shift in Solid Samples Collected from Crude Oil Transmission Pipelines." In CONFERENCE 2022. AMPP, 2022. https://doi.org/10.5006/c2022-18009.

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Abstract Microbiological monitoring of samples collected from oilfield operations is crucial for understanding microbial impacts on metal infrastructure. As many oilfields and related infrastructure are in remote locations, the time between sample collection, shipping to laboratory and sample processing for microbiological analysis can vary from days to weeks. Hence, robust sample handling and preservation methodology to arrest microbiological activity at the time of sample collection is needed. To identify the best preservation methodologies that can be adopted for solids, oily sludge samples

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Yoon, Yuhchae, Christopher Joseph, Leanne Petry, Douglas C. Hansen, Jeremy D. Angel, and William H. Abbott. "Two-Year Atmospheric Corrosion and Accelerated Corrosion Test: A Comparative Study." In CORROSION 2015. NACE International, 2015. https://doi.org/10.5006/c2015-05957.

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Abstract The accelerated corrosion of pure silver (UNS P07020), three aerospace aluminum alloys (UNS A92024, UNS A96061 and UNS A97075), pure copper (UNS C10100) and carbon steel (UNS G10100) in a standard ASTM B117 (5wt% NaCl solution at 95 °F and 95% RH) salt spray test as well as a modified ASTM B117 salt spray test that included ozone (100 and 800 ppb) and ultraviolet A (0.1 and 0.85 W/m2) were investigated and compared to the corrosion observed on identical samples exposed over a two year period in the field at eight geographic locations. The effects of environmental and climate factors o

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Videla, H. A., S. G. Gómez. de Saravia, M. F. L. de Mele, and P. S. Guiamet. "Bioelectrochemical Assessment of Biofilm Effects on MIC of Two Different Steels of Industrial Interest." In CORROSION 1990. NACE International, 1990. https://doi.org/10.5006/c1990-90123.

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Abstract SAE 1020 and X-60 steel samples were assayed in laboratory experiments against two different microbial strains isolated from cutting-oil emulsions: Pseudomonas fluorescens and Desulfovibrio vulgaris to evaluate their resistance to microbial attack. Several electrodes were immersed during different periods of time either in a Pseudomonas fluorescens or in a Desulfovibrio vulgaris pure culture and in a mixed culture of Pseudomonas fluorescens + Desulfovibrio vulgaris. The relationship between the corrosive attack and bacterial biofilms was assessed in each case by using electrochemical

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Zhu, Yinghao, Lapu Nise, Jihui Tang, Hongguang Zhu, and Zhenlong Xing. "Two samples were Mendelian randomized to analyze the association between serum vitamin D and frozen shoulder risk." In 2024 14th International Conference on Information Technology in Medicine and Education (ITME). IEEE, 2024. https://doi.org/10.1109/itme63426.2024.00020.

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Kopera, Paulina, Anna Twarog, and Henryk Sechman. "STUDY OF CHANGES IN HYDROGEN CONCENTRATION IN SOIL GAS SAMPLES." In 24th SGEM International Multidisciplinary Scientific GeoConference 24. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/4.1/s17.27.

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Hydrogen can originate from various geological processes and its ability to migrate to near-surface layers makes soil gas analysis crucial for identifying subsurface accumulations. Current methods using portable analysers are often insufficient for precise determination, highlighting the need for gas chromatography in controlled laboratory settings. Hydrogen's high mobility and chemical reactivity make it difficult to maintain stable soil gas samples from collection to analysis. To address this challenge, an experiment was conducted to assess the impact of storage time and conditions on hydrog

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Babaioff, Moshe, Yannai A. Gonczarowski, Yishay Mansour, and Shay Moran. "Are Two (Samples) Really Better Than One?" In EC '18: ACM Conference on Economics and Computation. ACM, 2018. http://dx.doi.org/10.1145/3219166.3219187.

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Viecelli, N. C., R. P. Baldasso, K. L. Manfredini, and I. N. Filho. "Bisphenol A in two kinds of soil samples." In International Conference on Environmental Science and Biological Engineering. WIT Press, 2014. http://dx.doi.org/10.2495/esbe140481.

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Reports on the topic "Two samples"

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Benjamin, Daniel, Don Moore, and Matthew Rabin. Biased Beliefs About Random Samples: Evidence from Two Integrated Experiments. National Bureau of Economic Research, 2017. http://dx.doi.org/10.3386/w23927.

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C. Connell and J.M. Scaglione. Summary Report of two-Dimensional Analysis of Radiochemical Assay Samples. Office of Scientific and Technical Information (OSTI), 2001. http://dx.doi.org/10.2172/803146.

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Ross, Peter, Samantha Scott, and Marie Noel. Tod Creek watershed: Water quality report for the 2023/24 wet season. Raincoast Conservation Foundation, 2024. https://doi.org/10.70766/76.9001.

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Water is essential for life, and steps are needed to understand, protect and restore its health in fish habitat throughout British Columbia. The Raincoast Healthy Waters program was launched in 2023 to establish community-oriented water pollution monitoring in select BC watersheds. Two Healthy Waters sampling events take place every year in each watershed: the dry season (summer), and the wet season (winter). This report highlights results from one sampling event: the first wet (winter) season sampling, carried out with the support and participation of the Capital Regional District (CRD) and T

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McCleney, Amy, and Terry Grimley. PR-015-17604-R02 Static Mixer Assessment Laboratory Testing. Pipeline Research Council International, Inc. (PRCI), 2020. http://dx.doi.org/10.55274/r0011771.

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Static mixers are nonmoving mixing devices that allow for the inline continuous mixing of fluids within a pipeline. Liquid samples are typically extracted downstream of the mixer to evaluate the composition of the fluid. However, the ability of mixers to provide a uniformly mixed sample and the acceptable distances at which this sample can be taken from the pipe for this composition evaluation are currently unknown. A testing effort was initiated to determine the effectiveness of two different static mixer designs, as well as sampling locations, by flowing known quantities of oil and water pas

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Barajas and George. PR-015-05600-R01 Assessment of Sampling Systems for Monitoring Water Vapor in Natural Gas Streams. Pipeline Research Council International, Inc. (PRCI), 2008. http://dx.doi.org/10.55274/r0011197.

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Research has been conducted to assess the usefulness of various sampling and delivery methods in transporting a representative sample of a natural gas stream for analysis of moisture content. Three sampling configurations commonly used by the natural gas industry were evaluated, including a sample system with a regulated probe heated above ambient conditions, the same system held at a constant temperature simulating ambient conditions, and a heated sample system incorporating a membrane filter. Each configuration was used to transport samples of distribution-quality natural gas with levels of

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George, Darin. L52315 Testing of Environmentally-Friendly Gas Sampling Methods. Pipeline Research Council International, Inc. (PRCI), 2009. http://dx.doi.org/10.55274/r0010176.

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Recent environmental concerns have led to calls for reduced hydrocarbon emissions to the atmosphere from a variety of sources. One source of emissions being examined in this regard is natural gas spot sampling methods that vent pipeline gases to the atmosphere. Some sampling techniques and equipment have been developed that do not emit greenhouse gases, but the need exists to test these methods for their ability to collect accurate, representative samples. Another related concern is the accuracy of samples drawn from streams near their hydrocarbon dew point (HDP). While the spot sampling metho

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Lougheed, H. D., M. B. McClenaghan, D. Layton-Matthews, and M. I. Leybourne. Indicator minerals in fine-fraction till heavy-mineral concentrates determined by automated mineral analysis: examples from two Canadian polymetallic base-metal deposits. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/328011.

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Exploration under glacial sediment cover is a necessary part of modern mineral exploration in Canada. Traditional indicator methods use visual examination to identify mineral grains in the 250 to 2000 µm fraction of till heavy-mineral concentrates (HMC). This study tests automated mineralogical methods using scanning electron microscopy to identify indicator minerals in the fine (&amp;lt;250 µm) HMC fraction of till. Automated mineralogy of polished grains from the fine HMC enables rapid data collection (10 000-300 000 grains/sample). Samples collected near two deposits were used to test t

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Reid, M. S., X. Wang, N. Utting, and C. Jiang. Comparison of water chemistry of hydraulic-fracturing flowback water from two geological locations at the Duvernay Formation, Alberta, Canada. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/329276.

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We analyzed and compared the water chemistry between 17 Fox Creek region samples, each from a different well, and 23 Three Hills region samples from a single well. Overall, the two regions were similar in chemical composition but showed small differences in some lower abundance dissolved elements. Additionally, we investigated changes in water chemistry of FPW over time from a single well. The majority of water quality parameters and water chemistry remained constant over the 7-month sampling time. Major ion chemistry showed increasing concentrations of Ca and Mg, and a decreasing concentratio

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Lindquist, B., and S. Lee. Three-dimensional imaging of drill core samples using synchrotron computed microtomography. Progress report, Year two. Office of Scientific and Technical Information (OSTI), 1994. http://dx.doi.org/10.2172/10143687.

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Swingle, R. F. Results of the Comparison Analyses of the Two Tank 40H Sludge Batch 2 Qualification Samples. Office of Scientific and Technical Information (OSTI), 2002. http://dx.doi.org/10.2172/799306.

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