Summary of Statistical Analyses of Specification Mortar Cube Test Results from Various Cement Suppliers, Including Four Types of Cement Approved for Corps of Engineers Projects

2008 ◽  
pp. 14-14-8
Author(s):  
TS Poole
Keyword(s):  
Statistical Analyses ◽  
Test Results ◽  
Corps Of Engineers

The thyrotropin-releasing hormone test: some statistical considerations

1992 ◽  
Vol 7 (1) ◽  
pp. 39-42
Author(s):  
CA de Mendonca Lima ◽  
S Vandel ◽  
P Bizouard
Keyword(s):  
Thyrotropin Releasing Hormone ◽  
Statistical Analyses ◽  
Test Interpretation ◽  
Test Results ◽  
Trh Test ◽  
Releasing Hormone ◽  
Administration Routes ◽  
Centre Hospitalier ◽  
Centre Hospitalier Universitaire ◽  
Sampling Times

SummaryFinal conclusions and data comparisons from the thyrotropin-releasing hormone (TRH) test results are made difficult by differences in test implementation methods, ie, TRH different administration routes, dosages and blood sampling times. A number of statistical analyses are feasible, which may also influence test interpretation. The authors review some types of statistical analyses and suggest using the area under curve (AUC) method as a means of evaluation. The TRH test was performed before treatment and after a 5-day wash-out period, in 40 depressed patients hospitalized in the Psychiatric Unit of Besancon Teaching Hospital (Centre Hospitalier Universitaire de Besançon). Variation analyses performed by peak and threshold comparison (7.0 IµU/ml) and by the AUC method (386 IµU/ml) in positive and negative patients revealed some statistical differences.

Prediction Model for Cementing Efficiency of Fly Ash Concrete by Statistical Analyses

2011 ◽  
Vol 250-253 ◽  
pp. 1293-1296 ◽  
Author(s):  
Hong Bum Cho ◽  
Nam Yong Jee
Keyword(s):  
Fly Ash ◽  
Prediction Model ◽  
Statistical Analyses ◽  
Test Results ◽  
Construction Sites ◽  
K Value ◽  
Fly Ash Concrete ◽  
Mix Proportion ◽  
Wide Range ◽  
Binder Ratio

This paper offers the model that can estimate the cementing efficiency of fly ash (k value) based on a mix proportion of concrete containing fly ash (FA). The prediction model was derived using various statistical analyses, based on a wide range of mix proportions and a number of strength test results of ready mixed concretes used in eight construction sites. The k value increases with increasing water-binder ratio. As the FA replacement ratios increase, the k value increases at FA replacement ratios of less than 15%, but decreases at ratios of 15% or more. The k values obtained from the cementing efficiency estimate model range from 0.1 to 2.1.

scholarly journals Ontwikkeling van ’n studie-oriëntasievraelys in wiskunde

1997 ◽  
Vol 16 (3) ◽  
pp. 127-134 ◽  
Author(s):  
J. G. Maree ◽  
W. J. Schoeman
Keyword(s):  
South Africa ◽  
High Schools ◽  
Statistical Analyses ◽  
Statistical Techniques ◽  
Test Results ◽  
Two Stage ◽  
Scheffe Test ◽  
Language Groups ◽  
Study Orientation

The aim of this study was to standardize a study orientation questionnaire in mathematics for learners from all language groups in South Africa. The population was defined as all learners taking mathematics in Grades 8 and 9, and in Grades 10 and 11 in high schools in South Africa. A stratified, random, two stage sample was then drawn. Statistical analyses included determining of reliabil­ity, intercorrelations (with a view to establishing criterion-related validity), norm determining and intercorrelations between factors. The data obtained were analysed by means of statistical techniques including MANOVA, ANOVA and the Scheffé test. Results are discussed. It is concluded that the questionnaire could be a useful instrument for use in classrooms in South Africa.

Statistical Analyses of Model Test Results in Still Water of High Speed Craft

1975 ◽  
Vol 1975 (137) ◽  
pp. 48-57 ◽  
Author(s):  
Tamotsu Nagai ◽  
Hirotsugu Tanaka ◽  
Yasushi Yoshida
Keyword(s):  
Model Test ◽  
High Speed ◽  
Statistical Analyses ◽  
Test Results

Effect of Testing Configuration in Semi-Circular Bending Fracture of Asphalt Mixtures: Experiments and Statistical Analyses

2019 ◽  
Vol 2673 (5) ◽  
pp. 320-328 ◽  
Author(s):  
Gabriel Nsengiyumva ◽  
Yong-Rak Kim
Keyword(s):  
Fracture Behavior ◽  
Peak Load ◽  
Test Methods ◽  
Asphalt Mixtures ◽  
Statistical Analyses ◽  
Test Results ◽  
Scb Test ◽  
Transportation Agencies ◽  
Bending Fracture ◽  
Flexibility Index

The semi-circular bending (SCB) test is a simple, efficient, and easily applicable method in the pavement community to characterize fracture behavior. This makes it widely used as a quality control (QC) and quality assurance (QA) approach at several transportation agencies. However, public–private testing laboratories have implemented SCB test methods using different load-support fixture conditions with an insufficient understanding of how the conditions affect the results and testing variability. This could be particularly problematic when using SCB test results obtained from different load-support fixtures as QC–QA (or pass/fail) purposes. This study investigated the effect of SCB testing configurations on test results and their variability by conducting tests using six different load-support fixtures. Several fracture-related indicators such as fracture energy, flexibility index, peak load, and the coefficient of the cracking index resulting from the six different load-support fixtures were compared. Test results and statistical analyses showed that SCB tests generally showed repeatable results, whereas load-support fixtures can affect test results and their repeatability, thus care should be taken when choosing a testing fixture. The addition of roller springs generally increased the variability of the test results. It appears that the mid-span jig was detrimental to testing repeatability, and friction at the support should be avoided because it can erroneously increase fracture resistance with a higher variability.

scholarly journals Analysis of the Possibility of Environmental Pollution by Composted Biodegradable and Oxo-Biodegradable Plastics

Geosciences ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 460 ◽  
Author(s):  
Markowicz ◽  
Szymańska-Pulikowska
Keyword(s):  
Chemical Composition ◽  
Environmental Pollution ◽  
Organic Waste ◽  
Biodegradable Plastics ◽  
Statistical Analyses ◽  
Test Results ◽  
Waste Collection ◽  
Organic Fraction ◽  
Valuable Product ◽  
Composition Changes

Composting the municipal organic fraction of waste results in a valuable product in the form of compost, which could be used instead of other forms of fertilisation. The organic waste stream may contain oxo-biodegradable and biodegradable plastics used for waste collection. Their components and decomposition residues may contaminate the compost chemically and physically. In this paper, the results of studies on the content of selected macro- and microelements in new and composted plastics have been analysed. Statistical analyses were carried out in order to determine the most characteristic components of plastics and to determine the character of chemical composition changes. The analysis of the test results showed that multidirectional changes in the content of macro- and microelements occur during composting, and they may be the source of contamination of the fertiliser produced. Contaminants in the form of microplastics may also be released into the environment, which may pose a threat to many elements of the environment, including animals and humans.

Statistical Analyses of Radioiodine and Protein-Bound Iodine Test Results on Arkansas Thyroid Patients

1962 ◽  
Vol 22 (11) ◽  
pp. 1138-1147 ◽  
Author(s):  
T. H. ODDIE ◽  
F. INST. P ◽  
J. C. MELBY ◽  
J. E. SCROGGS
Keyword(s):  
Statistical Analyses ◽  
Test Results ◽  
Iodine Test

Using Conventional Articulation Tests With Highly Unintelligible Children

1992 ◽  
Vol 23 (1) ◽  
pp. 52-60 ◽  
Author(s):  
Pamela G. Garn-Nunn ◽  
Vicki Martin
Keyword(s):  
Test Results ◽  
Phonological Processes ◽  
Rule Based ◽  
Severity Level ◽  
Error Sensitivity ◽  
Conventional Tests ◽  
Severity Levels ◽  
Conventional Test ◽  
Impaired Children

This study explored whether or not standard administration and scoring of conventional articulation tests accurately identified children as phonologically disordered and whether or not information from these tests established severity level and programming needs. Results of standard scoring procedures from the Assessment of Phonological Processes-Revised, the Goldman-Fristoe Test of Articulation, the Photo Articulation Test, and the Weiss Comprehensive Articulation Test were compared for 20 phonologically impaired children. All tests identified the children as phonologically delayed/disordered, but the conventional tests failed to clearly and consistently differentiate varying severity levels. Conventional test results also showed limitations in error sensitivity, ease of computation for scoring procedures, and implications for remediation programming. The use of some type of rule-based analysis for phonologically impaired children is highly recommended.

Vestibular Function and Motion Sickness Susceptibility: Videonystagmographic Evidence From Oculomotor and Caloric Tests

2020 ◽  
Vol 29 (2) ◽  
pp. 188-198
Author(s):  
Cynthia G. Fowler ◽  
Margaret Dallapiazza ◽  
Kathleen Talbot Hadsell
Keyword(s):  
Phase Velocity ◽  
Motion Sickness ◽  
Repeated Measures ◽  
Short Form ◽  
Vestibular Function ◽  
Slow Phase ◽  
Test Results ◽  
Normal Range ◽  
Slow Phase Velocity ◽  
Caloric Tests

Purpose Motion sickness (MS) is a common condition that affects millions of individuals. Although the condition is common and can be debilitating, little research has focused on the vestibular function associated with susceptibility to MS. One causal theory of MS is an asymmetry of vestibular function within or between ears. The purposes of this study, therefore, were (a) to determine if the vestibular system (oculomotor and caloric tests) in videonystagmography (VNG) is associated with susceptibility to MS and (b) to determine if these tests support the theory of an asymmetry between ears associated with MS susceptibility. Method VNG was used to measure oculomotor and caloric responses. Fifty young adults were recruited; 50 completed the oculomotor tests, and 31 completed the four caloric irrigations. MS susceptibility was evaluated with the Motion Sickness Susceptibility Questionnaire–Short Form; in this study, percent susceptibility ranged from 0% to 100% in the participants. Participants were divided into three susceptibility groups (Low, Mid, and High). Repeated-measures analyses of variance and pairwise comparisons determined significance among the groups on the VNG test results. Results Oculomotor test results revealed no significant differences among the MS susceptibility groups. Caloric stimuli elicited responses that were correlated positively with susceptibility to MS. Slow-phase velocity was slowest in the Low MS group compared to the Mid and High groups. There was no significant asymmetry between ears in any of the groups. Conclusions MS susceptibility was significantly and positively correlated with caloric slow-phase velocity. Although asymmetries between ears are purported to be associated with MS, asymmetries were not evident. Susceptibility to MS may contribute to interindividual variability of caloric responses within the normal range.

Sign in / Sign up

Export Citation Format

Share Document