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Journal articles on the topic 'Fisher's z-transformation'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Silver, N. Clayton, and William P. Dunlap. "Averaging correlation coefficients: Should Fisher's z transformation be used?" Journal of Applied Psychology 72, no. 1 (1987): 146–48. http://dx.doi.org/10.1037/0021-9010.72.1.146.

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2

TOYODA, Hideki. "A LEAST-SQUARES SOLUTION FOR CORRELATION STRUCTURE ANALYSIS WITH FISHER'S Z-TRANSFORMATION." Japanese Journal of Educational Psychology 37, no. 1 (1989): 67–70. http://dx.doi.org/10.5926/jjep1953.37.1_67.

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3

Bartlett, R. F. "Linear Modelling of Pearson's Product Moment Correlation Coefficient: An Application of Fisher's z-Transformation." Statistician 42, no. 1 (1993): 45. http://dx.doi.org/10.2307/2348110.

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4

Schmidt, Frank L., John E. Hunter, and Nambury S. Raju. "Validity generalization and situational specificity: A second look at the 75% rule and Fisher's z transformation." Journal of Applied Psychology 73, no. 4 (1988): 665–72. http://dx.doi.org/10.1037/0021-9010.73.4.665.

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5

Archakov, Ilya, and Peter Reinhard Hansen. "A New Parametrization of Correlation Matrices." Econometrica 89, no. 4 (2021): 1699–715. http://dx.doi.org/10.3982/ecta16910.

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We introduce a novel parametrization of the correlation matrix. The reparametrization facilitates modeling of correlation and covariance matrices by an unrestricted vector, where positive definiteness is an innate property. This parametrization can be viewed as a generalization of Fisher's Z‐transformation to higher dimensions and has a wide range of potential applications. An algorithm for reconstructing the unique n × n correlation matrix from any vector in R n ( n − 1 ) / 2 is provided, and we derive its numerical complexity.

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6

Dabbs, J. M., B. C. Campbell, B. A. Gladue, et al. "Reliability of salivary testosterone measurements: a multicenter evaluation." Clinical Chemistry 41, no. 11 (1995): 1581–84. http://dx.doi.org/10.1093/clinchem/41.11.1581.

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Abstract The reliability of salivary testosterone assays was evaluated by nine laboratories in four countries. Each laboratory used its own RIA procedures to assay samples from a set of 100 male and 100 female subjects. Agreement among the laboratories on mean scores was within the range reported by Read (Ann N Y Acad Sci 1993; 694: 161-76). Overall agreement on individual scores, as indicated by the intraclass correlation coefficient computed within subjects across laboratories, was r = 0.87 for men and r = 0.78 for women. Mean agreement between each laboratory and the combined set of all oth

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Kimixay, Litinthong, Liu Cheng, Abdul Waheed, and Lidinthong Kathid. "Understanding an Effect of Technology Between the Relationships of the Five-Factor Model and Sales Performance Technology as a Moderating Tool." International Journal of Information Systems in the Service Sector 11, no. 4 (2019): 58–78. http://dx.doi.org/10.4018/ijisss.2019100104.

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Over the past decades, numerous experts have been investigated the correlation among distinct personality traits and job performance. However, relatively less attention was paid examining the significance of technological tools in sales management, especially in developing countries. This article explores the relationship among the five-factor model (FFM) of personality traits and sales performance (SP) with a moderating role of the technology. To this end, structural equation modeling and Fisher's Z transformation analysis were employed to analyze the hypotheses. The findings revealed that ex

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Siddique, Meh Para Siddique, and Rubina Hanif. "Comparison of Schema Modes in Clinical and Non-Clinical Individuals: A Preliminary Finding." Global Social Sciences Review V, no. II (2020): 304–11. http://dx.doi.org/10.31703/gssr.2020(v-ii).29.

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This study compares the schema modes between the clinical and non-clinical individuals. A purposive convenient sampling technique was used for the data collection from one hundred and fifty healthy community volunteers, and sixty diagnosed psychiatric patients. The "Schema Mode Inventory (SMI)" was utilized for the mode assessment and group comparison. A series of independent sample t-test depicted that, the clinical group had a significantly higher score on ten out of twelve dysfunctional schema modes and significantly lesser score on both functional schema modes. Identically, Fisher's r-to-z

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Andersen, V. D., P. Munk, L. V. de Knegt, M. S. Jensen, F. M. Aarestrup, and H. Vigre. "Validation of the register-based lifetime antimicrobial usage measurement for finisher batches based on comparison with recorded antimicrobial usage at farm level." Epidemiology and Infection 146, no. 4 (2018): 515–23. http://dx.doi.org/10.1017/s0950268818000134.

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AbstractAssessing the relationship between antimicrobial usage (AMU) and antimicrobial resistance (AMR) requires the accurate and precise utilisation of register data. Therefore, validation of register-based data is essential for evaluating the quality and, subsequently, the internal validity of studies based on the data.In this study, different smoothing methods for Veterinary Medicine Statistic Program database (VetStat)-records were validated by comparing these with farm-records. Comparison between measurements included accuracy as; completeness and correctness, and precision as; a relative

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10

Volke, H. J., P. Dettmar, P. Richter, M. Rudolf, and U. Buhss. "On-Coupling and Off-Coupling of Neocortical Areas in Chess Experts and Novices." Journal of Psychophysiology 16, no. 1 (2002): 23–36. http://dx.doi.org/10.1027//0269-8803.16.1.23.

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Abstract This paper presents a pilot study on the differences in evoked EEG coherence measures (computed as zero-lagged cross-correlation, “EC”) between chess experts and novices while solving chess problems. One of our earlier investigations ( Volke, 1999 ) had shown that both location and direction of EC changes in task processing (compared with a resting condition) depend on the degree of task performance. As a result we postulated that when solving the same tasks experts and novices would show different EC. The results of the recent study confirmed this supposition. Chess tasks of varying

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11

Yang, Zhengling, Zhifeng Duan, Jingjing Wang, Teng Wang, Yanwen Song, and Jun Zhang. "Quadratic radical function better than fisher z transformation." Transactions of Tianjin University 19, no. 5 (2013): 381–84. http://dx.doi.org/10.1007/s12209-013-1978-8.

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12

Yang, Zheng-Ling, Yan-Wen Song, Zhi-Feng Duan, Teng Wang, and Jun Zhang. "New Sigmoid-like function better than Fisher z transformation." Communications in Statistics - Theory and Methods 45, no. 8 (2014): 2332–41. http://dx.doi.org/10.1080/03610926.2013.771750.

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13

Stein, Brady L., Jerry L. Spivak, and Alison R. Moliterno. "Age-Related Differences in Disease Characteristics and Clinical Outcomes in Polycythemia Vera." Blood 118, no. 21 (2011): 1758. http://dx.doi.org/10.1182/blood.v118.21.1758.1758.

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Abstract Abstract 1758 Introduction: Advanced age is an important prognostic indicator in Polycythemia Vera (PV), since this variable influences thrombosis risk as well as myelofibrotic and leukemic transformation. Whether younger patients are at less risk for these complications is unknown, but longer disease duration may offer more opportunity to experience these cardinal complications. To address this question, we retrospectively analyzed 134 PV patients, comparing those diagnosed before age 45 (N=70), to those diagnosed after age 65 (N=64), from the Johns Hopkins Center for Myeloproliferat

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14

Berry, Kenneth J., and Paul W. Mielke. "A Monte Carlo Investigation of the Fisher Z Transformation for Normal and Nonnormal Distributions." Psychological Reports 87, no. 3_suppl (2000): 1101–14. http://dx.doi.org/10.2466/pr0.2000.87.3f.1101.

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The Fisher transformation of the sample correlation coefficient r (1915, 1921) and two related techniques by Gayen (1951) and Jeyaratnam (1992) are examined for robustness to nonnormality. Monte Carlo analyses compare combinations of sample sizes and population parameters for seven bivariate distributions. The Fisher, Gayen, and Jeyaratnam approaches are shown to provide useful results for a bivariate normal distribution with any population correlation coefficient ρ and for nonnormal bivariate distributions when ρ = 0. In contrast, the techniques are virtually useless for nonnormal bivariate d

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BERRY, KENNETH J. "A MONTE CARLO INVESTIGATION OF THE FISHER Z TRANSFORMATION FOR NORMAL AND NONNORMAL DISTRIBUTIONS." Psychological Reports 87, no. 7 (2000): 1101. http://dx.doi.org/10.2466/pr0.87.7.1101-1114.

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Marasso, Danilo, Corrado Lupo, Simone Collura, Alberto Rainoldi, and Paolo Riccardo Brustio. "Subjective versus Objective Measure of Physical Activity: A Systematic Review and Meta-Analysis of the Convergent Validity of the Physical Activity Questionnaire for Children (PAQ-C)." International Journal of Environmental Research and Public Health 18, no. 7 (2021): 3413. http://dx.doi.org/10.3390/ijerph18073413.

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This study aimed to highlight the relationship between moderate-to-vigorous physical activity (MVPA) as assessed by accelerometer devices and the Physical Activity Questionnaire for Children (PAQ-C) to estimate the convergent validity of the questionnaire. A systematic review and a meta-analysis were applied by collecting pertinent studies (PubMed, Web of Science, PsycINFO, and SCOPUS) from 1997 until November 2020. The relationship between PAQ-C and MVPA scores was estimated considering correlation coefficients such as the effect size. Fisher’s transformation was used to convert each correlat

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Nero, Alecia C., Timothy L. McCavit, Leah M. Adix, et al. "Impact of Jaundice On Adults with Sickle Cell Anemia." Blood 120, no. 21 (2012): 4753. http://dx.doi.org/10.1182/blood.v120.21.4753.4753.

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Abstract Abstract 4753 Introduction For many patients with sickle cell anemia (SCA), jaundice, yellow discoloration of the skin and mucous membranes, may be the most visible manifestation of their disease. The degree to which jaundice impacts the daily lives of patients with SCA has not been previously described. This study aims to assess the effect of jaundice on the health-related quality of life (HRQOL) of adults living with SCA. Methods This study was a cross-sectional survey of patients with SCA. A convenience sample of patients age > 17 years with SCA were approached during routine cl

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18

Et.al, Santanu Choudhury. "Reliability and Validity of Compulsive Buying Scale Without Middle Point." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 3 (2021): 3604–10. http://dx.doi.org/10.17762/turcomat.v12i3.1640.

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Objective: The study aims at finding out the affect of reliability and validity for the compulsive buying behavior scale by Valence, d’ Astou’s and Fortier Scale without middle point. Methodology: Responses across 5 to 9 point scales are obtained to calculate the reliability and validity of compulsive buying behavior scale by Valence, d’ Astou’s and Fortier Scale. Cronbach’s alpha is used to measure the internal reliability of the scale. To compare the reliability coefficients among different scale points Feldt test and Hakstian-Whalen test are used. Convergent validity for measuring int

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Shieh, Gwowen. "Improved procedures and computer programs for equivalence assessment of correlation coefficients." PLOS ONE 16, no. 5 (2021): e0252323. http://dx.doi.org/10.1371/journal.pone.0252323.

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The correlation coefficient is the most commonly used measure for summarizing the magnitude and direction of linear relationship between two response variables. Considerable literature has been devoted to the inference procedures for significance tests and confidence intervals of correlations. However, the essential problem of evaluating correlation equivalence has not been adequately examined. For the purpose of expanding the usefulness of correlational techniques, this article focuses on the Pearson product-moment correlation coefficient and the Fisher’s z transformation for developing equiv

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20

Cao, Qidong, Xue Bai, and Thomas E. Griffin. "An Empirical Investigation of Factors Affecting Web-Based and Face-to-Face Student Satisfactions with Course Website." International Journal of Information Systems in the Service Sector 4, no. 2 (2012): 19–32. http://dx.doi.org/10.4018/jisss.2012040102.

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Course Websites have been considered an increasingly important part of online as well as face-to-face education delivery formats. While a vast body of literature has been devoted to comparison of the online and traditional face-to-face courses, little research of student satisfaction with respect to course Websites differentiated between the online and face-to-face students. In order to improve quality of course Websites, the effort was aimed at identifying important predictors of the satisfaction of online students and face-to-face students. This study conducted Fisher’s z transformation and

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21

Yuan, Zhongshang, Hong Liu, Xiaoshuai Zhang, et al. "From Interaction to Co-Association —A Fisher r-To-z Transformation-Based Simple Statistic for Real World Genome-Wide Association Study." PLoS ONE 8, no. 7 (2013): e70774. http://dx.doi.org/10.1371/journal.pone.0070774.

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22

Yang, Seungho, Afnan Ahmad, Peter Y. Park, Gunho Sohn, and Jeremy Krygsman. "Public Transit Service Reliability Assessment using Two-Fluid Model." Transportation Research Record: Journal of the Transportation Research Board 2674, no. 4 (2020): 89–100. http://dx.doi.org/10.1177/0361198119896783.

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This study introduces a traffic flow theory-based reliability indicator to evaluate the inter-city public transit service. The two-fluid theory parameter n that measures the road networks’ resilience to changing traffic is used as a new reliability indicator of public bus service. We compared the performance of the new indicator with the three existing reliability indicators, including on-time performance, with a total of 52 different GO Bus routes to ascertain the usability of the new indicator. The GO Bus service is an inter-city bus service operated by Metrolinx in the Greater Toronto and H

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23

Viana, Marlos A. G. "On a Criterion for Combining Correlational Data." Journal of Educational Statistics 18, no. 3 (1993): 261–70. http://dx.doi.org/10.3102/10769986018003261.

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To test the hypothesis of a positive correlation, consider the following plans: Plan A consists of combining k >1 independent sample correlations, each one based on N bivariate observations and a common correlation parameter. Plan B consists of observing a single correlation based on the same total kN bivariate observations. Plan C also requires the total of kN observations and differs from A only in that the sample sizes are not homogeneous. It is shown that B is the relatively optimal plan, whether the corresponding testing procedures are compared in terms of relative large sample power o

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Deng, Shengming, Zhifang Wu, Yiwei Wu, et al. "Meta-Analysis of the Correlation between Apparent Diffusion Coefficient and Standardized Uptake Value in Malignant Disease." Contrast Media & Molecular Imaging 2017 (2017): 1–16. http://dx.doi.org/10.1155/2017/4729547.

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The objective of this meta-analysis is to explore the correlation between the apparent diffusion coefficient (ADC) on diffusion-weighted MR and the standard uptake value (SUV) of 18F-FDG on PET/CT in patients with cancer. Databases such as PubMed (MEDLINE included), EMBASE, and Cochrane Database of Systematic Review were searched for relevant original articles that explored the correlation between SUV and ADC in English. After applying Fisher’s r-to-z transformation, correlation coefficient (r) values were extracted from each study and 95% confidence intervals (CIs) were calculated. Sensitivit

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Mikulich-Gilbertson, Susan K., Brandie D. Wagner, Paula D. Riggs, and Gary O. Zerbe. "On estimating and testing associations between random coefficients from multivariate generalized linear mixed models of longitudinal outcomes." Statistical Methods in Medical Research 26, no. 3 (2015): 1130–45. http://dx.doi.org/10.1177/0962280214568522.

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Different types of outcomes (e.g. binary, count, continuous) can be simultaneously modeled with multivariate generalized linear mixed models by assuming: (1) same or different link functions, (2) same or different conditional distributions, and (3) conditional independence given random subject effects. Others have used this approach for determining simple associations between subject-specific parameters (e.g. correlations between slopes). We demonstrate how more complex associations (e.g. partial regression coefficients between slopes adjusting for intercepts, time lags of maximum correlation)

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Gigliotti, Eileen, and William Ellery Samuels. "Tests of Revisions to the Norbeck Social Support Questionnaire." SAGE Open Medicine 8 (January 2020): 205031212091129. http://dx.doi.org/10.1177/2050312120911293.

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Objectives: To compare the accuracy of averaged scores from the original Norbeck Social Support Questionnaire (NSSQ)and averaged scores from each of three new NSSQ versions (NSSQ-R.aid, NSSQ-R.n/a, and NSSQ-R.format). These three new versions of the widely used NSSQ were developed to address three previously identified concerns regarding score accuracy: the Aid subscale’s examples of aid, lack of an n/a response option, and the network nomination/rating procedure. Missing data rates were also assessed. Methods: A convenience sample ( N = 223) completed one of the four NSSQ versions. Score accu

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Semmel, Eric S., Vonetta M. Dotson, Thomas G. Burns, William T. Mahle, and Tricia Z. King. "Posterior Cerebellar Volume and Executive Function in Young Adults With Congenital Heart Disease." Journal of the International Neuropsychological Society 24, no. 9 (2018): 939–48. http://dx.doi.org/10.1017/s1355617718000310.

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AbstractObjectives: As the number of adolescents and young adults (AYAs) surviving congenital heart disease (CHD) grows, studies of long-term outcomes are needed. CHD research documents poor executive function (EF) and cerebellum (CB) abnormalities in children. We examined whether AYAs with CHD exhibit reduced EF and CB volumes. We hypothesized a double dissociation such that the posterior CB is related to EF while the anterior CB is related to motor function. We also investigated whether the CB contributes to EF above and beyond processing speed. Methods: Twenty-two AYAs with CHD and 22 match

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Stewart, Andrea, Barbara Sternfeld, Brittney S. Lange-Maia, et al. "Reported and Device-Based Physical Activity By Race/Ethnic Groups in Young-Old Women." Journal for the Measurement of Physical Behaviour 3, no. 2 (2020): 118–27. http://dx.doi.org/10.1123/jmpb.2019-0062.

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Purpose: To examine racial/ethnic differences in participant-reported and device-based estimates of sedentary and physical activity behaviors and correlations between measurement methods in midlife and young-old women. Methods: Data are from 1,257 Study of Women’s Health Across the Nation participants, aged 60–72 who agreed to participate in an accelerometer protocol and had valid wear time (46% White, 26% Black, 12% Chinese, 10% Japanese, 6% Hispanic). Measures from the Kaiser Physical Activity Scale (KPAS) and ActiGraph wGT3X-BT were summarized overall and by race/ethnic groups. Partial Spea

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Kolahi, Jafar, Saber Khazaei, Pedram Iranmanesh, Jeehyoung Kim, Heejung Bang, and Abbasali Khademi. "Meta-Analysis of Correlations between Altmetric Attention Score and Citations in Health Sciences." BioMed Research International 2021 (April 7, 2021): 1–11. http://dx.doi.org/10.1155/2021/6680764.

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Introduction. In recent years, several controversial reports of the correlation between altmetric score and citations have been published (range: -0.2 to 0.8). We conducted a meta-analysis to provide an in-depth statistical analysis of the correlation between altmetric score and number of citations in the field of health sciences. Methods. Three online databases (Web of Science, Scopus, and PubMed) were systematically searched, without language restrictions, from the earliest publication date available through February 29, 2020, using the keywords “altmetric,” “citation,” and “correlation.” Gr

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Kandel, Yuba R., Carl A. Bradley, Martin I. Chilvers, et al. "Relationship Between Sudden Death Syndrome caused by Fusarium virguliforme and Soybean Yield: A Meta-Analysis." Plant Disease 104, no. 6 (2020): 1736–43. http://dx.doi.org/10.1094/pdis-11-19-2441-re.

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In total, 52 uniform field experiments were conducted in Illinois, Indiana, Iowa, Michigan, South Dakota, and Wisconsin in the United States and Ontario, Canada from 2013 to 2017 comparing crop protection products against sudden death syndrome (SDS) of soybean. Data were analyzed using meta-analytic models to summarize the relationship between foliar disease index (FDX) and yield. For each study, correlation and regression analyses were performed separately to determine three effect sizes: Fisher’s transformation of correlation coefficients (Z r ), intercept (β0), and slope (β1). Random- and m

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Grote, Stefan, Tatjana Noeldeke, Michael Blauth, Wolf Mutschler, and Dominik Bürklein. "Mechanical torque measurement in the proximal femur correlates to failure load and bone mineral density ex vivo." Orthopedic Reviews 5, no. 2 (2013): 16. http://dx.doi.org/10.4081/or.2013.e16.

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Knowledge of local bone quality is essential for surgeons to determine operation techniques. A device for intraoperative measurement of local bone quality has been developed by the AO-Research Foundation (DensiProbe®). We used this device to experimentally measure peak breakaway torque of trabecular bone in the proximal femur and correlated this with local bone mineral density (BMD) and failure load. Bone mineral density of 160 cadaver femurs was measured by <em>ex situ </em>dual-energy X-ray absorptiometry. The failure load of all femurs was analyzed by side-impact analysis. Femur

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Hayama, K., M. Takeuchi, A. Ideta, et al. "294 EFFECT OF SPERMATOZOA MOTILITY ON TRANSFERABLE EMBRYO RATE OF SUPEROVULATED JAPANESE BLACK CATTLE." Reproduction, Fertility and Development 21, no. 1 (2009): 244. http://dx.doi.org/10.1071/rdv21n1ab294.

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Sperm motility is known to affect fertilization; however, little is known about the relationship between frozen–thawed sperm motility and in vivo fertilization following superovulatory treatment. The objective of this study was to evaluate a sperm function test as potential predictors of embryo production following superovulatory treatment in cattle. Two to five batches of semen (Japanese black bull, n = 4, A to D) were diluted with egg york-citrate-glycerol in 0.5 mL plastic straws, and they were stored in liquid nitrogen until analyzed. Frozen–thawed spermatozoa were evaluated for motility {

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Mansor, Noor Rohana, Asyraf Hj Ab Rahman, Ahmad Tajuddin Azza J., Roswati Abd Rashid, and Nurul Ain Chua. "New Norms of Online Teaching and Learning: Covid-19 Semester Experience for Universiti Malaysia Terengganu Students." Academic Journal of Interdisciplinary Studies 10, no. 4 (2021): 248. http://dx.doi.org/10.36941/ajis-2021-0114.

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The COVID-19 pandemic has affected the national education agenda at all levels of education. New Teaching and Learning (T&L) online norms have been executed except for specific academic programs and subjects only since 18 March 2020 when the Movement Control Order (MCO) was administered and continued to this day. To guarantee students’ continuity of education without online T&L dropout, online face-to-face (Synchronous) or not face-to-face (Asynchronous) is now become the primary approach and method platform with many virtual education applications. Therefore, this research examined st

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Cournoyer, A., A. Denault, S. Cossette, et al. "MP009: Reliability and interchangeability of measures of two tissue oximeters in healthy volunteers." CJEM 18, S1 (2016): S69. http://dx.doi.org/10.1017/cem.2016.150.

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Introduction: Near-infrared spectroscopy (NIRS) is a non-invasive, continuous and painless method of monitoring oxygen saturation of hemoglobin in any given superficial tissue. Given that hemodynamic instability can affect the oxygen saturation, NIRS could prove to be an interesting tool in quantifying tissue oxygenation, consequently guiding clinical management. The aim of this study was to compare the reliability of two commonly used tissue oximeters, the INVOS 5100c from Covidien and the Equanox 7600 from Nonin. We postulated the Equanox (a more recent tissue oximeter) would have a better r

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Sugranyes, Gisela, Mireia Masias, Jose Pariente, et al. "S164. HIPPOCAMPAL CONNECTIVITY IN YOUTH WITH SCHIZOPHRENIA: COMPARISON WITH PATIENTS WITH NMDA RECEPTOR ENCEPHALITIS AND HEALTHY VOLUNTEERS." Schizophrenia Bulletin 46, Supplement_1 (2020): S98—S99. http://dx.doi.org/10.1093/schbul/sbaa031.230.

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Abstract Background The N-methyl-D-aspartate receptor (NMDAR) hypofunction model of schizophrenia suggests that dysfunction of these receptors could underlie the brain functional abnormalities characterising these patients. In NMDAR encephalitis (NMDARE), which holds clinical similarities with schizophrenia, autoantibodies target NMDARs, predominantly located in the hippocampal region, leading to disrupted glutamatergic transmission. One study so far has described abnormal connectivity between the medial temporal lobe and posterior default mode network regions in patients with NMDARE (Peer et

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Santoso, Agung. "Utilizing Fisher’s-Z Transformation for Item Selection." ANIMA Indonesian Psychological Journal 33, no. 3 (2018). http://dx.doi.org/10.24123/aipj.v33i3.1694.

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The previous work has shown that item selection method based on the use of corrected item-total correlation larger than .3 as the criterion provided the least errors of including items with low corrected item-total correlation in the population and excluding items with high corrected item-total correlation in the population. However, such method did not address the fact that corrected item-total correlation fluctuated across samples. Therefore, in smaller samples, the method provided larger errors. The current article proposed a new method for item selection that took into account the fluctuat

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Shang, Eric K., Derek P. Nathan, Ronald M. Fairman, et al. "Abstract 236: Local Wall Thickness in Finite Element Models Improves Prediction of Abdominal Aortic Aneurysm Growth." Arteriosclerosis, Thrombosis, and Vascular Biology 33, suppl_1 (2013). http://dx.doi.org/10.1161/atvb.33.suppl_1.a236.

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Objective Growing evidence suggests that peak wall stress (PWS) derived from finite element analysis (FEA) of abdominal aortic aneurysms (AAAs) predicts clinical outcomes better than diameter alone. Prior models assume uniform wall thickness (UWT). We hypothesize that inclusion of locally variable wall thickness (VWT) into FEA of AAAs will improve the ability to predict clinical outcomes. Methods Patients with AAAs (n=26) undergoing radiologic surveillance were identified. Custom MATLAB algorithms generated UWT and VWT aortic geometries from CTA images, which were subsequently loaded with syst

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Joo, Yo-Han, Yun-Kwan Kim, In-Gyu Choi, et al. "In vivo glucose metabolism and glutamate levels in mGluR5 knockout mice: a multimodal neuroimaging study using [18F]FDG microPET and MRS." EJNMMI Research 10, no. 1 (2020). http://dx.doi.org/10.1186/s13550-020-00716-z.

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Abstract Background Perturbed functional coupling between the metabotropic glutamate receptor-5 (mGluR5) and N-methyl-d-aspartate (NMDA) receptor-mediated excitatory glutamatergic neurotransmission may contribute to the pathophysiology of psychiatric disorders such as schizophrenia. We aimed to establish the functional interaction between mGluR5 and NMDA receptors in brain of mice with genetic ablation of the mGluR5. Methods We first measured the brain glutamate levels with magnetic resonance spectroscopy (MRS) in mGluR5 knockout (KO) and wild-type (WT) mice. Then, we assessed brain glucose me

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Spooner, Rachel K., Alex I. Wiesman, Jennifer O’Neill, et al. "Prefrontal gating of sensory input differentiates cognitively impaired and unimpaired aging adults with HIV." Brain Communications 2, no. 2 (2020). http://dx.doi.org/10.1093/braincomms/fcaa080.

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Abstract Despite effective therapies that have extended the life expectancy of persons living with HIV, 35–70% of these adults still develop some form of cognitive impairment, and with a growing population of aging adults with HIV, the prevalence of these cognitive deficits is likely to increase. The mechanisms underlying these HIV-associated neurocognitive disorders remain poorly understood but are often accelerated by the aging process and accompanied by disturbances in sensory processing, which may contribute to the observed cognitive decline. The goal of the current study was to identify t

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LeCroy, Madison N., Yasmin Mossavar-Rahmani, Xiaonan Xue, et al. "Abstract MP02: Diet Quality Comparisons In Hispanic/Latino Siblings And The Role Of Social And Environmental Determinants: Results From The Hispanic Community Children's Health Study/Study Of Latino Youth (SOL Youth)." Circulation 143, Suppl_1 (2021). http://dx.doi.org/10.1161/circ.143.suppl_1.mp02.

Full text

Abstract:

Introduction: Hispanic/Latino youth in the United States are disproportionately burdened by obesity. Siblings are important determinants of each other’s health behaviors, particularly in Hispanic/Latino families whose cultural values are distinctive for stressing close and supportive family relationships. However, no study in Hispanic/Latino youth has examined how overall diet quality correlates between siblings. Objective: To determine how well Hispanic/Latino siblings’ diet quality correlates with each other and whether social and environmental factors explain potential differences. Methods:

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