scholarly journals Regime Variance Testing --- a Quantile Approach

2013 ◽  
Vol 44 (5) ◽  
pp. 1015 ◽  
Author(s):  
J. Gajda ◽  
G. Sikora ◽  
A. Wyłomańska
Keyword(s):  
Variance Testing

scholarly journals Risk assessment of transitional economies by multivariate and multicriteria approaches

2010 ◽  
Vol 57 (3) ◽  
pp. 283-302 ◽  
Author(s):  
Neli Tomic-Plazibat ◽  
Zdravka Aljinovic ◽  
Snjezana Pivac
Keyword(s):  
Risk Assessment ◽  
Transitional Economies ◽  
Country Risk ◽  
Anova Analysis ◽  
Individual Country ◽  
East European ◽  
Promethee Method ◽  
Variance Testing ◽  
Combination Of Methods ◽  
Multivariate Cluster

This article assesses country-risk of sixteen Central, Baltic and South-East European transition countries, for 2005 and 2007, using multivariate cluster analysis. It was aided by the appropriate ANOVA (analysis of variance) testing and the multicriteria PROMETHEE method. The combination of methods makes for more accurate and efficient country-risk assessment. Country risk classifications and ratings involve evaluating the performance of countries while considering their economic and socio-political characteristics. The purpose of the article is to classify, and then find the comparative position of each individual country in the group of analyzed countries, in order to find out to which extent development of market economy and democratic society has been achieved.

Combining Reliability Coefficients: Toward Reliability Generalization of the Conceptions of Mathematics Questionnaire

2005 ◽  
Vol 96 (3) ◽  
pp. 627-634 ◽  
Author(s):  
Andile Mji ◽  
Haitham M. Alkhateeb
Keyword(s):  
United States ◽  
South Africa ◽  
Analysis Of Variance ◽  
The United States ◽  
Reliability Generalization ◽  
Variance Testing ◽  
The Difference ◽  
Post Hoc ◽  
Strength Of Association ◽  
Reliability Coefficients

The combined coefficient alpha from studies reporting the reliability of scores using the Conceptions of Mathematics Questionnaire were computed. Five studies comprising 898 participants were evaluated. A test of differences among the independent coefficients alpha was statistically significant (χ42 = 10.38, p = .04) for the Fragmented and (χ42 = 11.58, p = .02) for the Cohesive subscales. Post hoc comparisons showed the difference ( F129,299= 1.50, p = .003) was between Australia and Nigeria for the former and ( F155,157 = 1.54, p = .004) between South Africa and the United States for the latter alpha values. A one-way analysis of variance, testing for homogeneity among means within each subscale, indicated that these were homogeneous because the measure of the strength of association accounted for 10% of variability. As reliability coefficients were from homogeneous samples and alpha values were not different, the combined reliability is the best estimate of the population reliability for each subscale.

scholarly journals PEMODELAN SISTEM AKUNTANSI MANAJEMEN BERKOMPUTER UNTUK MENINGKATKAN MOTIVASI DAN KINERJA UMKM MANUFAKTUR

2017 ◽  
Vol 19 (2) ◽  
pp. 155
Author(s):  
Jessica Jessica ◽  
Yohanes Harimurti ◽  
Julius Runtu
Keyword(s):  
Intrinsic Motivation ◽  
Ease Of Use ◽  
Intention To Use ◽  
Accounting System ◽  
Behavior Intention ◽  
User Attitudes ◽  
Variance Testing ◽  
Surrounding Areas ◽  
Positive Effect ◽  
Expected Increase

The usefulness of management accounting system (MAS) would be enjoyed if SME owners take the initiative to use MAS. This research suggests that the perived of easy, perceived of usefulness, and user attitudes will affect owners/management’s behavior intention to use a computerized-based MAS. If the behavior intention to use is high, then the intrinsic motivation of users is expected increase also. Increasing intrinsic motivation of SME owners are expected to improve their performance. The sample was manufacturing SMEs in Surabaya and surrounding areas. The result of regression analysis conclude about MAS that: (a) Intrinsic motivation shows significantly positive effect on the SMEs performance, both managerial or financial performance, (b) behavior intention to use MAS do not significantly influence the motivation, (c) the usefulness and ease of use do not significantly influence the behavior intention to use MAS, and (d) users’ attitude significantly influence the behavior intention to use MAS. Further analysis of variance testing found evidence of: (1) there is a difference in perception between the groups using the manual MAS and the group using computerized-based MAS. This finding affirms the benefits of computerized-based MAS through higher means on all of variables; and (2) if the users perceive that the use of computerized-based MAS is much easier, then the performance will be significantly different.

scholarly journals Genotoxic and cytotoxic effects of Haas appliance in exfoliated buccal mucosa cells during orthodontic treatment

2018 ◽  
Vol 88 (5) ◽  
pp. 590-595 ◽  
Author(s):  
Arthur S. Cunha ◽  
Willian Orlando Castillo ◽  
Catarina Satie Takahashi ◽  
Erika Calvano Küchler ◽  
Raquel Assed Bezerra Segato ◽  
...  
Keyword(s):  
Epithelial Cells ◽  
Buccal Mucosa ◽  
Orthodontic Treatment ◽  
Nonparametric Tests ◽  
Cytotoxic Effects ◽  
Significance Level ◽  
Posterior Crossbite ◽  
Cellular Abnormalities ◽  
Variance Testing ◽  
The Right

ABSTRACT Objectives: To evaluate the genotoxic and cytotoxic effects of Haas appliances through micronuclei test and cytogenetic damage analysis in buccal mucosa epithelial cells of patients undergoing orthodontic treatment. Materials and Methods: Twenty-eight patients, 6–12 years of age and of both genders, who required a Haas appliance for the correction of a posterior crossbite were included. Epithelial cells from the mucosa were collected by gently scraping the inside of both the right and left cheeks. The cells were collected before the insertion of the appliance (T0), 1 month after the device was installed (T1), and again 3 months after the appliance was immobilized (T2). The cells were processed to obtain slides. Feulgen/Fast Green was used as the staining method, and the number of normal, karyolytic, pyknotic, nuclear buds, bi/trinucleated, and micronucleus cells were counted under light microscopy. Cellular abnormalities were evaluated with parametric and nonparametric tests for comparison of the means by analysis of variance testing, Tukey posttest, or the Kruskal-Wallis test and then by Dunn's posttest. The significance level was 5%. Results: There were no statistically significant changes in the micronuclei in the evaluated periods (P > .05). Nuclear buds increased at T1 (P < .05), returning to baseline levels at T2. Other abnormalities (cariolytic, pyknotic, and bi/trinucleated cells) showed a significant increase at T1 and T2 (P < .0001). Conclusions: The Haas appliance did not cause an increase in micronuclei in cells of the buccal mucosa. However, statistically significant increases in cariolytic, pyknotic, and bi/trinucleated cells were observed during treatment, suggesting possible DNA damage.

scholarly journals Postharvest shelf life of tomato (Lycopersicon esculentum Mill.) mutanats (nor and rin) and their hybrids

Genetika ◽  
2012 ◽  
Vol 44 (3) ◽  
pp. 449-456
Author(s):  
Dejan Cvikic ◽  
Jasmina Zdravkovic ◽  
Nenad Pavlovic ◽  
Sladjan Adzic ◽  
Mladen Djordjevic
Keyword(s):  
Shelf Life ◽  
F1 Hybrids ◽  
Parental Lines ◽  
Variance Testing ◽  
Delayed Maturation ◽  
F2 Generation ◽  
Mutant Lines ◽  
Mutant Genes ◽  
Tomato Genotypes

Two tomato lines with normal maturation (NR-1 and NR-2) have been crossed with two mutant lines (NR-10 nor and NR-12 rin) with delayed maturation (shelf life). Determination of mutant genes has been done by ?2 test on 100 fruits from F2 generation. Fruits have been picked 65 days from antesis and kept for 60 days, when six evaluations have been done. Data have been collected every 10 days on parental lines and progeny F1 and F2 generation. Variance testing has been done on the basis of one- and two-factorial analysis and groups compared by contrasts. Fruits have been preserved in controlled conditions (in dark at 5?C). Tomato genotypes with nor or rin gene had desirable traits (delayed ripening, long shelf life and firm fruits) for modern selection, so they should be included in programmes aiming to create commercial F1 hybrids.

scholarly journals Pengaruh Iklim Komunikasi dan Motivasi Terhadap Produktifitas Kerja

2020 ◽  
Vol 16 (1) ◽  
pp. 17-30
Author(s):  
Muhammad Mansyur
Keyword(s):  
Business Education ◽  
Work Productivity ◽  
Correlation Coefficients ◽  
Employee Motivation ◽  
Communication Climate ◽  
Microsoft Excel ◽  
Analysis Techniques ◽  
Determining Factors ◽  
Variance Testing ◽  
Data Collections

The purpose of this study is to perceive and rolethe influence of the communication climate and motivation to the work productivity of employees in the Center for Development and Empowerment of Educators and Business Education. This research is causality using quantitative approach with the quotation of sample is 60 personnel. Data collections used interview, observation, literature and questionnaires in the form of questions techniques. The data analysis techniques using correlation coefficients analysis, multiple regression analysis as long as variance testing using aid programme viz Microsoft Excel. These results of this research indicate that communication climate and motivation are determining factors in measuring work productivity. Optimization the level of productivity is not yet spring to the leader's range of the from their subordinates in the communication that is not running smoothly and added to the rewards received by employees that are not comparable, which causes a decrease in employee motivation.

Level of Visual Acuity Necessary to Avoid False-Positives on the HRR and Ishihara Color Vision Tests

2016 ◽  
Vol 27 (3) ◽  
pp. 363-366 ◽  
Author(s):  
Jason S. Ng ◽  
Brian Shih
Keyword(s):  
Visual Acuity ◽  
Color Vision ◽  
Normal Subjects ◽  
False Positives ◽  
Significant Difference ◽  
Color Vision Tests ◽  
Ishihara Test ◽  
Distance Difference ◽  
Variance Testing ◽  
Optical Defocus

Purpose Minimizing false-positives (FPs) when evaluating color vision is important in eye care. Identification of plate 1 (demonstration plate) is often considered a way to avoid FPs. However, few studies have quantified the minimum level of visual acuity (VA) that would minimize FPs for the Ishihara and HRR color tests. Methods Threshold levels of optical defocus were obtained from 25 color normal subjects. Blur levels were obtained for Ishihara (38 plate) plates 1, 10, and 15 and 4th edition HRR plates 1, 7, 10, and 20 using the method of limits. Corresponding VAs were measured through these blur levels at 40 centimeters after adjusting for the dioptric distance difference. Analysis of variance testing was used to analyze the data. Results Mean optical defocus values in diopters (mean ± SD) for HRR plates 1, 7, 10, and 20 were 6.23 ± 1.61, 1.23 ± 1.16, 2.41 ± 1.31, and 7.96 ± 2.03, respectively, and for Ishihara plates 1, 10, and 15 were 5.70 ± 1.52, 3.68 ± 1.71, and 4.62 ± 1.56, respectively. There was a significant difference between the screening and demonstration plates for both tests (p<0.001). Conclusions Based on the plate in each test that was found to be the least tolerant to blur, the average minimum VAs needed to identify the screening plates were approximately 20/180 for the Ishihara test and 20/50 for the HRR test. Identifying the demonstration plate in the Ishihara and HRR tests does not ensure FPs will be avoided.

Sign in / Sign up

Export Citation Format

Share Document