• Asia-Pacific Journal of Business
• /
• v.13 no.1
• /
• pp.89-102
• /
• 2022

Purpose - We examine empirically the relationship between the board of directors and the corporate performance using board characteristics related variables. Design/methodology/approach - We empirically test the hypotheses using fixed effects models (FEM), using data of 3,703 listed non-financial companies in China from 2010 to 2019. Findings - First, the ownership of board of directors is positively related to ROA. Second, the size of the board of directors is positively related to ROA. Third, there is no evidence that interaction between characteristic variables related to the board of directors affect the corporate performance. Research implications or Originality - These results show that as the board of directors has larger ownership, the degree of identity of interest between stock holders and the board becomes bigger to reduce agency cost, then it lets the board make decisions to improve the corporate performance. In addition, as the board of directors becomes bigger, the board has strong independence to play the role of monitoring and advising, then it leads to improvement of corporate performance.

• Communications for Statistical Applications and Methods
• /
• v.19 no.1
• /
• pp.147-155
• /
• 2012

We propose some properties for a fuzzy correlation test by reduced-spread fuzzy variance for sample fuzzy data. First, we define the condition of fuzzy data for repeatedly observed data or that which includes error term data. By using the average of spreads for fuzzy numbers, we reduce the spread of fuzzy variance and define the agreement index for the degree of acceptance and rejection. Given a non-normal random fuzzy sample, we have bivariate normal distribution by apply Box-Cox power fuzzy transformation and test the fuzzy correlation for independence between the variables provided by the agreement index.

• Communications for Statistical Applications and Methods
• /
• v.23 no.5
• /
• pp.433-444
• /
• 2016

When we observe binary responses in a cluster (such as rat lab-subjects), they are usually correlated to each other. In clustered binomial counts, the independence assumption is violated and we encounter an extra-variation. In the presence of extra-variation, the ordinary statistical analyses of binomial data are inappropriate to apply. In testing the homogeneity of proportions between several treatment groups, the classical Pearson chi-squared test has a severe flaw in the control of Type I error rates. We focus on modifying the chi-squared statistic by incorporating variance inflation factors. We suggest a method to adjust data in terms of dispersion estimate based on a quasi-likelihood model. We explain the testing procedure via an illustrative example as well as compare the performance of a modified chi-squared test with competitive statistics through a Monte Carlo study.

• Journal of the Korean Society of Environmental Restoration Technology
• /
• v.13 no.3
• /
• pp.143-151
• /
• 2010

This study was carried out to use efficiently forest resources through the survey of analysis of consciousness for the application of other use following quarrying. The application types of other use following quarrying were 366 people (49.5%) for forest recreation, 164 people (22.2%) for facility application, 117 people (15.8%) for vacation facility, and 93 people (12.6%) for tree planting types. According to the test of independence between facility utility types and gender, male preferred the leisure facility type, but female preferred the forest recreation type. The tree planting type was not related to the gender, but male preferred facility application types. Also, female preferred a static use type such as recreation and walking, while male preferred a dynamic use type such as the leisure and facility application types. According to the test of independence between facility application and occupation types students and company employees preferred the leisure facility type, while school faculty and staff, self employees, and housewives preferred the forest recreation type. Public servants preferred tree planting and facility application types. The sojourn time was the overnight and 6-8 hours in the leisure facility type, within 4 hours in the forest recreation and tree planting types, and 6-8 hours in the facility application types. Other use plans of the quarry site following quarrying will be needed to establish quarry facility application models with consideration for visitor's preferences.

• Asian-Australasian Journal of Animal Sciences
• /
• v.26 no.1
• /
• pp.36-42
• /
• 2013

The average twin lambing rate of Bayanbulak sheep is 2% to 3%. However, a flock of sheep with a close genetic relationship and an average of 2 to 3 lambs per birth has been found recently. To determine the major genes controlling the prolificacy of the flock in the present study, the flock was designated A while 100 normal Bayanbulak sheep were randomly selected to comprise the control flock B. Ligase detection reaction method was applied to detect and analyze the 10 mutational loci of the 3 candidate prolificacy genes including bone morphogenetic protein type I receptors, bone morphogenetic protein 15, and growth differentiation factor 9. The 10 mutational loci are as follows: FecB locus of the BMPR-IB gene; $FecX^I$, $FecX^B$, $FecX^L$, $FecX^H$, $FecX^G$, and $FecX^R$ of the BMP15 gene; and G1, G8, and FecTT of the GDF9 gene. Two mutations including BMPR-IB/FecB and GDF9/G1 were found in Bayanbulak sheep. Independence test results of the two flocks demonstrate that the FecB locus has a significant effect on the lambing number of Bayanbulak sheep. However, the mutation frequency of the G1 locus in GDF9 is very low. Independence test results demonstrate that the GDF9 locus does not have a significant impact on the lambing performance of Bayanbulak sheep. Among the 10 detected loci, BMPR-IB/FecB is the major gene that influences the high lambing rate of Bayanbulak sheep.

• 대한공업교육학회지
• /
• v.30 no.1
• /
• pp.46-55
• /
• 2005

The purpose of this study is to contemplate the relationship between a cognitive styles(field-independence/dependence, Fl/D)and a technological problem solving(TPS) among the industrial high school students. When it comes to perception, remembrance and consideration, we all have our own individual and steady patterns. We call them cognitive styles. FI/D is one kind of cognitive styles and it is about how dependently we perceive the field which each object has. Custer(1995) presented the technological problem among problem solving existed in various types as organizing it with four conceptional frames, which are invention, design, trouble shooting and procedures. We tested 56students belong to B industrial high school in A city, Korea. We used Group Embedded Figures Test(GEFT) to experiment the FI/D cognitive styles. We also did the TPS test by using an appliance which a researcher has developed. The appliance was made according to the technological problem and its validity was justified by an expert. We came up with a correlation coefficient between the FI/D cognitive styles and TPS to figure out what kind of relationship those two variable factors have and how much they are correlated each other. The correlation coefficient turned out ".59" which means they have significant and positive correlation.To find out the TPS difference between FI group and FD group, we compared each group's TPS score. As a result of the analysis, the FI group's TPS score is significantly higher than FD group's one.

• Journal of Industrial Convergence
• /
• v.20 no.4
• /
• pp.85-93
• /
• 2022

The purpose of this study was to verify whether strengthening family competency plays a mediating role in the influence of parents' parenting efficacy on the independent life of children with developmental disabilities. The subjects of the study were 146 parents with developmental disabilities, and data analysis using the SPSS 22.0 program was conducted. The mediating effect was Baron and Kenny Hierarchical regression analysis and sobel-test were conducted. As a result of the study, the positive effect of parents' parenting efficacy on the level of self-reliance and strengthening family competency of children with developmental disabilities was verified. In addition, the positive mediating effect of strengthening family competency was verified between the parenting efficacy of parents and the level of independence of children with developmental disabilities. As a result of the study, it is important to support parents' parenting and family capacity enhancement to support the independence of children with developmental disabilities.

• Journal of the Korean Home Economics Association
• /
• v.45 no.5
• /
• pp.85-94
• /
• 2007

The purpose of this study was to examine the relationships between mothers' childhood experiences, satisfaction as a parent, spousal support in parenting and their children's perception of their child-rearing practices. The subjects were 321 fifth and sixth graders from two elementary schools in Seoul and their mothers. A revised version of the Mother-Father Peer Scale (MFPS; Epstein, 1983) was used to assess the mothers' child experiences. To measure parental satisfaction, the Parent Satisfaction Scale (PSS; Duke, Rose, & Halverson, 1997) was revised and used. A modified version of the Teamwork of Parenting Alliance Inventory (PAI; Abidin, 1988) was used to assess spousal support in parenting. A modified version of the Child-rearing Behaviors Questionaire (Park, 1995) was used to assess the mothers' child-rearing practices. The data were analyzed with descriptive statistics and a t-test. The results of this study were as follows. 1) Mothers who received a greater degree of independence encouragement and acceptance from their fathers tended to show more warmth/acceptance in their child-rearing practices than those who received a lesser degree of independence encouragement and acceptance from their fathers. Mothers who received a greater degree of independence encouragement from their own mothers tended to show more warmth/acceptance of their children but less permissiveness/nonintervention and rejection/restriction in their child-rearing practices when compared to those who received a lesser degree of independence encouragement from their own mothers. The mothers who received a greater degree of acceptance from their own mothers tended to show more warmth/acceptance of their children but less rejection/restriction in their child-rearing practices when compared to those who received a lesser degree of acceptance from their own mothers. 2) Mothers who had a greater degree of satisfaction as a parent tended to show more warmth/acceptance but less rejection/restriction in their child-rearing practices than those who had a lesser degree of satisfaction in parenting. 3) Mothers who received a greater degree of spousal support in parenting showed more warmth/acceptance in their child-rearing practices than those who received a lesser degree of spousal support.

• The Journal of Korean Academy of Sensory Integration
• /
• v.16 no.3
• /
• pp.23-33
• /
• 2018

Objective : The purpose of this study is to investigate trend in use of occupational therapy assessment tools used by pediatric occupational therapist. Methods : Survey questionnaire developed for this study were used to for data collection. The questionnaires are divided into 10 area: occupational performance, activities of daily living, education, play, sensory-perceptual, motor and praxis, cognition, social interaction skills, development, and physical examination. Total 105 responses were analyzed using descriptive statistics analysis and frequency analysis. Results : For the general process of evaluation in pediatric occupational therapy, major response on the initial evaluation time was 30~60minutes (41.9%), and major response on the re-evaluation period was 3~6months (41.0%). The major assessment tool for each area Canadian Occupation Performance Measure (55.2%) for occupational performance assessments, Wee Functional Independence Measure (57.1%) for activities of daily living assessments, School Function Assessment (2.5%) for education assessments, Knox Preschool Play Scale (28.6%) for play assessments, Developmental Test of Visual Perception (94.3%) for sensory-perceptual assessments, Bruininks-Oseretsky Test of Motor Proficiency (42.9%) for motor and praxis assessments, Evaluation of Social Interaction (6.1%) for social interaction skills assessments, Denver Developmental Screening Test (92.4%) for development assessments, Clinical Observation (89.5%) for physical examination assessments. Conclusion : The study identified the most assessment tools used for specific area by pediatric occupational therapists. The results can be used as a basic data to educate about pediatric occupational therapy evaluation, as well as to develop new assessment tools in pediatric setting in future.

• The Transactions of the Korea Information Processing Society
• /
• v.3 no.2
• /
• pp.225-230
• /
• 1996

We propose a statistical test for the nonlinear combiner logics which are usually combined with two maximal Linear Feedback Shift Registers and generate pseudorandom bit sequences. This test uses the mutual information between the output and set of inputs which will be a random variable and its distribution is obeyed to an approximate $\{chi}^2$ -distribution. We adopt this statistic to a $\{chi}^2$ -test of independence by using contingency table. We also apply a proposed test to some non-linear crptosystems and show that this useful to evaluate the strength of the cryptosystems.