Using interpolation and correlation to evaluate the quality of cement composites exposed to a thermally aggressive environment

Introduction. The article addresses the quality evaluation of cement composites after their exposure to the atmospheric environment that features a rapid change in positive and negative temperatures. The article has a numerical assessment of the quality of cement composites. The quality assessment method encompasses the Spearman’s rank correlation, the coefficient of determination, and the adjustment ratio. Materials and methods. Testable cement composites are the compositions numbered from one to eight. They differ in the concentration of various additives, including superplasticizers and aggregates. Testable compositions were exposed to cyclic changes in positive and negative temperatures, and four of their properties were checked in the points of control on Day 0, Day 15, and Day 45. Linear interpolation was used to expand the data array. Changes in the properties of composites were compared with the benchmark values; the Spearman’s rank correlation and the coefficient of determination were calculated. Moreover, arrays of interpolated values were reduced to relative units to calculate the adjustment ratios. Entry values were employed to develop the evaluation metrics and assess the quality of cement composites. Results. The proposed numerical metrics is used to rank the testable samples and identify the best compositions. Library functions and transformations, available in the MATLAB system, are applied to each action, which can be implemented in nearly any software programming language. Conclusions. The proposed method of heuristic quality evaluation of cement composites may be applied to the cases when testable samples are exposed to versatile adverse and aggressive operating conditions.

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Motivation Mechanism for Stimulating the Labor Potential

Research in World Economy ◽

10.5430/rwe.v11n4p53 ◽

2020 ◽

Vol 11 (4) ◽

pp. 53

Author(s):

Iryna Koshkalda ◽

Oleksandr Kniaz ◽

Alona Ryasnyanska ◽

Viktoriya Velieva

Keyword(s):

Work Experience ◽

Rank Correlation ◽

Employee Motivation ◽

Pairwise Comparisons ◽

Motivation Mechanism ◽

Quality Of Work ◽

Spearman’S Rank Correlation ◽

Determining Factor ◽

Labor Potential

The issue of motivating the labor personnel to work effectively has been studied. The views of the world scientific community on employee motivation have been analyzed. Motivation has been proved as a determining factor in ensuring the efficient and coordinated work of employees. The hypothesis has been put forward concerning the influence of such aspects of the labor activity as advanced training, a level of responsibility, work experience, promptness, quality of work, and labor intensity on the labor potential motivation. The degree of influence of these aspects of work is determined based on the method of pairwise comparisons. The reliability of the calculations was proved by determining the consistency of experts’ opinions based on Spearman's rank correlation methodology.

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Validation of the French version of the Wisconsin Quality of Life (WISQOL) questionnaire for patients with urolithiasis

Canadian Urological Association Journal ◽

10.5489/cuaj.6552 ◽

2020 ◽

Vol 15 (4) ◽

Author(s):

Naeem Bhojani ◽

Ghizlane Moussaoui ◽

David-Dan Nguyen ◽

Mei Juan Trudel ◽

Garo-Shant Topouzian ◽

...

Keyword(s):

Quality Of Life ◽

Internal Consistency ◽

Tertiary Care ◽

Rank Correlation ◽

French Version ◽

Spearman’S Rank Correlation ◽

Significant Difference ◽

Back Translation ◽

One Way Anova

Introduction: The Wisconsin Stone Quality of Life (WISQOL) questionnaire has been recently developed to objectively assess QOL in patients with urolithiasis. However, French version of the questionnaire was lacking. Therefore, the aim of the present study was to develop and validate the French version of this tool. Methods: The French version of the WISQOL (F-WISQOL) was developed in a multi-step process involving primary translation, back-translation and pilot testing amongst a group of patients (n=12). Urolithiasis patients from two tertiary care institutions were recruited into this study and completed 3 questionnaires: Perceived Stress Scale-10, medical history form and either the WISQOL or F-WISQOL. Internal consistency was assessed using Cronbach’s α and inter-domain associations were evaluated using Spearman’s rank correlation (r). One-way ANOVA was used to compare scores from the two groups (WISQOL and F-WISQOL). Results: A total of 210 patients were enrolled in this study; 68 in the WISQOL group and 148 in the F-WISQOL group. Internal consistency was high for all domains in both groups (F-WISQOL: 0.924-0.970; WISQOL: 0.888-0.965). No statistically significant difference was found between the two groups’ scores. Inter-domain association, measured by Spearman correlation, was moderate to very strong between all of the domains in the F-WISQOL. Values ranged from r=0.676-0.915, with acceptable correlation between D1, D2 and D3, but weaker correlation between D4 (vitality) and the 3 other domains r=0.676-0.729. Conclusions: In the present study, the French version of the WISQOL questionnaire (F-WISQOL) was validated at two academic institutions.

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Indirect and direct standardization for evaluating transplant centers

Journal of Hospital Administration ◽

10.5430/jha.v8n1p9 ◽

2018 ◽

Vol 8 (1) ◽

pp. 9

Author(s):

Kevin He

Keyword(s):

Patient Outcomes ◽

Rank Correlation ◽

Care Patient ◽

Multivariate Logistic Regression Model ◽

Medical Providers ◽

Ongoing Debate ◽

Spearman’S Rank Correlation ◽

Spearman’S Rank Correlation Coefficient ◽

Direct Standardization

To assess the quality of health care, patient outcomes associated with medical providers are routinely monitored in order to identify poor (or excellent) provider performance. To avoid confounding by risk factors, both indirect and direct standardization have been used for comparing outcome rates or prevalence for different providers. There has been an ongoing debate as to which standardization method is more appropriate. To compare the performance of indirect and direct standardization for the purpose of ranking transplant centers, we analyzed post-transplant mortality using the national kidney transplant data. Included in our analysis were 116,601 patients (from 230 transplant centers) who underwent kidney transplantation between January 2006 and December 2012. Multivariate logistic regression model was used to model the 30-day mortality, which were estimates of failures (grant failure or death) in the 30 days after the transplant surgery. Concordance indexes, kappa coefficients and Spearman’s rank correlation coefficient were computed. The estimated values from these statistics for the indirect standardized method were similar to the direct standardization. The results suggest that both indirect and direct standardized methods provide similar ability to distinguish center effects.

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PENGARUH PENERAPAN STANDAR AKUNTANSI KEUANGAN ENTITAS TANPA AKUNTABILITAS PUBLIK TERHADAP KUALITAS LAPORAN KEUANGAN

Jurnal Riset Akuntansi dan Keuangan ◽

10.17509/jrak.v1i3.6699 ◽

2017 ◽

Vol 1 (3) ◽

pp. 244

Author(s):

Silviana Agustami ◽

Imam Agus Suintri

Keyword(s):

Financial Reporting ◽

Rank Correlation ◽

Financial Statements ◽

Primary Data ◽

Coefficient Of Determination ◽

Financial Reports ◽

Independent Variable ◽

The Relationship ◽

Descriptive Method

This study aims to (1) determine the implementation of SAK ETAP at BPR in the Bandung city (2) determine the quality of the financial reports of BPR in the Bandung city, and (3) determine the effect of the implementation of SAK ETAP to quality financial reports on BPR in Bandung city. In this study, researchers used primary data for variable implementation of SAK ETAP and the quality of financial reporting through questionnaires distributed to 11 BPR in the Bandung city. The method used in this research is descriptive method verikatif. The statistical analysis tools in this study using Spearman rank correlation to determine the direction and strength of the relationship between the two variables, while the coefficient of determination is used to determine the ability of the independent variable (X) in influencing the dependent variable (Y). These results indicate (1) the implementation of SAK ETAP at BPR in the Bandung city in general has been implemented adequately (2) BPR in the Bandung city has been preparing and presenting the financial statements sufficient to satisfy the elements of relevant, reliable, able to comparable, and understandable (3) the implementation of SAK ETAP moderate effect on the quality of the financial reports of BPR in the Bandung city, amounting to 0.587. Based on the calculation of the coefficient of determination SAK ETAP implementation contribute to or influence by 34.5%% of the quality of financial reporting at BPR in the Bandung city, while the remaining 65.5% was contributed by other factors not examined

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Activity Recommendation Model Using Rank Correlation for Chronic Stress Management

Applied Sciences ◽

10.3390/app9204284 ◽

2019 ◽

Vol 9 (20) ◽

pp. 4284 ◽

Cited By ~ 5

Author(s):

Ji-Soo Kang ◽

Dong-Hoon Shin ◽

Ji-Won Baek ◽

Kyungyong Chung

Keyword(s):

Stress Management ◽

Correlation Coefficient ◽

Chronic Stress ◽

Rank Correlation ◽

Korean People ◽

Spearman’S Rank Correlation ◽

Spearman’S Rank Correlation Coefficient ◽

Proposed Model ◽

Basic Rank

Korean people are exposed to stress due to the constant competitive structure caused by rapid industrialization. As a result, there is a need for ways that can effectively manage stress and help improve quality of life. Therefore, this study proposes an activity recommendation model using rank correlation for chronic stress management. Using Spearman’s rank correlation coefficient, the proposed model finds the correlations between users’ Positive Activity for Stress Management (PASM), Negative Activity for Stress Management (NASM), and Perceived Stress Scale (PSS). Spearman’s rank correlation coefficient improves the accuracy of recommendations by putting a basic rank value in a missing value to solve the sparsity problem and cold-start problem. For the performance evaluation of the proposed model, F-measure is applied using the average precision and recall after five times of recommendations for 20 users. As a result, the proposed method has better performance than other models, since it recommends activities with the use of the correlation between PASM and NASM. The proposed activity recommendation model for stress management makes it possible to manage user’s stress effectively by lowering the user’s PSS using correlation.

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The quality of the sperm of red breeds bulls of OAO Barnaulskoe breeding enterprise and its resistance to cryopreservation

Bulletin of NSAU (Novosibirsk State Agrarian University) ◽

10.31677/2072-6724-2021-58-1-92-100 ◽

2021 ◽

pp. 92-100

Author(s):

A. I. Zheltikov ◽

T. V. Konovalova ◽

O. I. Sebezhko ◽

V. V. Ilyin ◽

P. N. Palchikov ◽

...

Keyword(s):

Heavy Metals ◽

Correlation Coefficient ◽

Rank Correlation ◽

Preliminary Assessment ◽

Breeding Programs ◽

Research Results ◽

Spearman’S Rank Correlation ◽

Spearman’S Rank Correlation Coefficient ◽

Selection Of

The characteristic of bulls-producers of red breeds of OAO Barnaulskoe breeding enterprise on the quality of sperm and its resistance to cryopreservation are presented. The breeding enterprise has examined samples of water, soil, feed for the content of heavy metals. In the studied samples, no excess of the LOC was found. The research results were processed on a PC using population statistics methods. Angler bulls produced the largest amount of ejaculates unsuitable for cryopreservation. It is 20.6%. According to this indicator, they surpassed the producers of red Danish and red steppe breeds by 4.1-7.8%. The animals of the latter breed showed the smallest amount (1.7%) of ejaculates rejected after defrost. In Angler bulls, this indicator was 5.95%, in red Danish bulls it was 2.95%, which is 3.52 and 1.75 times higher than in red steppe breeders (P <0.01-0.001). Significant differences were established between individual bulls of the red steppe breed in the number of ejaculates rejected before cryopreservation (2.84-22.29%) and after defrost (0-7.09%). The differences between breeds in the frequency of rejected ejaculates before freezing and after cryopreservation indicate a certain role of heredity in the resistance of animals for these indicators. Spearman’s rank correlation coefficient between these traits was 0.312. It indicates the possibility of preliminary assessment and selection of bulls according to the first indicator. But the final assessment of the bull-producers can be made by the frequency of rejected ejaculates after thawing. We propose to consider the issue of additional accounting in breeding programs for the resistance of the seed of bulls-producers to cryopreservation.

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The impact of the quality of life perception on the self-esteem of physically active adults

Acta Scientiarum Health Sciences ◽

10.4025/actascihealthsci.v39i1.31967 ◽

2017 ◽

Vol 39 (1) ◽

pp. 51

Author(s):

Daniel Vicentini de Oliveira ◽

José Roberto Andrade do Nascimento Júnior ◽

Renan Codonhato ◽

Thayna Da Silva Zamboni ◽

Adriele Tarini dos Santos ◽

...

Keyword(s):

Quality Of Life ◽

Rank Correlation ◽

Self Esteem ◽

The Self ◽

Physically Active ◽

Spearman’S Rank Correlation ◽

Spearman’S Rank Correlation Coefficient ◽

The Impact ◽

Active Adults

This study aimed at investigating the impact of the quality of life perception on the self-esteem of physically active adults. A total of 63 male and female swimming practitioners (38.13 ± 11.72) were evaluated. A socio-demographic questionnaire, WHOQOL-Bref Scale, and the Rosenberg Self-Esteem Scale were used as tools. For data analysis the descriptive statistics, Kolmogorov-Smirnov Test, Mann-Whitney U Test, Spearman’s Rank Correlation Coefficient, and the Univariate Multiple Regression were used. No significant differences were found either for the quality of life or the self-esteem between sexes; there was a significant positive correlation (p < 0.05) among the physical (r = 0.37), psychological (r = 0.36) and environmental (r = 0.30) domains with self-esteem. The regression model explained 20% of the self-esteem variability, with moderate and significant pathways of the physical (β = 0.23) and psychological (β = 0.23) domains, whereas the environmental domain did not show a significant predictive relation (p = 0.988) with self-esteem. It is concluded that a higher quality of life perception may result in a higher self-esteem for physically active adults.

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Grain yield stability of spring safflower (Carthamus tinctorius L.)

Australian Journal of Agricultural Research ◽

10.1071/ar07273 ◽

2008 ◽

Vol 59 (6) ◽

pp. 546 ◽

Cited By ~ 5

Author(s):

Reza Mohammadi ◽

Sayyed Saeid Pourdad ◽

Ahmed Amri

Keyword(s):

Coefficient Of Variation ◽

Rank Correlation ◽

Type A ◽

Carthamus Tinctorius ◽

Coefficient Of Determination ◽

Environment Interaction ◽

Type B ◽

Stability Parameters ◽

Spearman’S Rank Correlation ◽

Genotype Environment Interaction

The additive main effect and multiplicative interaction (AMMI) model and the phenotypic stability parameters, ecovalence (W2), regression coefficient (b), coefficient of determination (R2), coefficient of variation (CV), stability variance (S2), AMMI stability value (ASV), and TOP (proportion of environments in which a genotype ranked in the top third), were used to evaluate simultaneously the yield performance and stability of 17 spring safflower genotypes and to evaluate 26 rainfed environments during 2003–05 in Iran. These parameters were designated as Type-A and Type-B for genotypes and environments, respectively. Among Type-B parameters, Spearman’s rank correlation showed that the AMMI stability value (ASVj), ecovalence (Wj2), genotypic variance (Sj2), and coefficient of variation (CVj) were significantly and positively associated (P < 0.01), indicating that one of these parameters can be used as an alternative to the others, but were significantly and negatively correlated with the genotypic selectivity (bj) parameter. The results showed that none of the Type-A statistics per se was useful for selecting high-yielding and stable genotypes. Based on these parameters, the genotypes G9, G10, and G11 combined high and stable yields while the highest yielding genotypes G1 and G17 were the most instable. Type-A and Type-B stability parameters are useful to identify genotypes with specific and large adaptations and the contrasting environments with high contribution to genotype × environment interaction.

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Reliability of trawl surveys on cod in Norwegian fjords

ICES Journal of Marine Science ◽

10.1093/icesjms/fsn068 ◽

2008 ◽

Vol 65 (6) ◽

pp. 937-945

Author(s):

T. M. Lunde ◽

O. R. Godø ◽

R. Rosland

Keyword(s):

Rank Correlation ◽

Bottom Trawl ◽

Marine Science ◽

Catch Per Unit Effort ◽

International Council ◽

Spearman’S Rank Correlation ◽

Analytical Assessment ◽

Trawl Surveys ◽

Over Time

Abstract Lunde, T. M., Godø, O. R., and Rosland, R. 2008. Reliability of trawl surveys on cod in Norwegian fjords. – ICES Journal of Marine Science, 65: 937–945. According to ICES, the International Council for the Exploration of the Sea, populations of coastal cod (CC) in Norway north of 62°N have been declining since 1994. The estimates are based on analytical assessment in which the most recent estimates are tuned with survey information. We evaluate the quality of bottom-trawl surveys conducted in four North Norwegian fjords during autumn of the years 1995–2004. Surveys tended to be carried out later in autumn in the more recent years than in the earlier years. Consequently, there was a significant decrease in sun's altitude from 1995 to 2004 at the time the surveys were carried out. Further inconsistency among years dominated when comparing catch per unit effort (cpue) by year class and age over time. Often, the observed cpue at age a + 1 in year y + 1 was greater than in year y at age a. Spearman’s rank correlation of cpue vs. year also demonstrated inconsistencies in the data. The problems related to separating CC and northeast Arctic cod are discussed.

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The Correlation between Hearing Loss and the Quality of Life of Workers Exposed to the Noise in the Textile Industry

Jurnal Kesehatan Masyarakat ◽

10.15294/kemas.v15i1.18124 ◽

2019 ◽

Vol 15 (1) ◽

pp. 81-88

Author(s):

Sumardiyono Sumardiyono ◽

Reni Wijayanti ◽

Hartono Hartono ◽

Ari Probandari

Keyword(s):

Quality Of Life ◽

Hearing Loss ◽

Textile Industry ◽

Bodily Pain ◽

Rank Correlation ◽

Cross Sectional Survey ◽

Cross Sectional ◽

Spearman’S Rank Correlation ◽

Spearman’S Rank Correlation Coefficient

Noise is a stressor for hearing loss among workers. Unfortunately, hearing loss also affect worker’s quality of life. This study aimed to investigate the correlation between hearing loss and quality of life among workers in textile industry. The study design was a cross-sectional survey. The study population were 200 workers exposed to the noisy textile industry. The data were analyzed using Spearman's rank correlation coefficient. The findings showed a significant relationship between hearing loss and the quality of life of the workers (rs=-0.698; p=0.000). The dimensions of quality of life associated with hearing loss were the Physical Functioning (rs=-0.493; p=0.000), Role-Physical (rs=-0.501; p=0.000), Bodily Pain (rs=-0.516; p=0.000), General Health (rs=-0.497; p=0.000), Vitality (rs=-0.527; p=0.000), Social Functioning (rs=-0.521; p=0.000), Role-Emotional (rs=-0.521; p=0.000), and Mental Health (rs=-0.517; p=0.000). This study concludes that hearing loss decreases the quality of life among workers exposed to the noise of the textile industry.

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