• Journal of Families and Better Life
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• v.9 no.2
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• pp.323-343
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• 1991

The purpose of this study is to examine the relationship among stressor(role conflict), coping strategy, and psychological well-being toward dual-career wives. For this purpose data were collected form 117 dual -career wives. The statistical methods used for data analysis were frequency distribution. percentile, Pearson's correlation and multiple regression. The results were as follows; 1)The general tendency of the stressor level of dual-career wives was slightly over the mid-point scores, 2.5 and the level of psychological well-being was relatively high. Also, the degree to which dual-career wives used coping strategies was relatively high. 2)Role conflicts were negatively related to psychological well-being. 3)Coping strategies were positively related to psychological well-being. 4)The degree of the negative influence which role conflicts had on psychological well-being was lower int he group using a high degree of coping strategies than in the group using a low degree of coping strategies.

• Journal of Welding and Joining
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• v.28 no.3
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• pp.59-64
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• 2010

The purpose of this study is to identify the principal factor controlling transverse residual stress at the weldment for joining unit hull blocks. In order to do it, the comprehensive FE analyses were carried out to evaluate the effect of distance between fillet and butt weldments, stiffener span and in-plane restraint degree on the amount and distribution of transverse residual stress in way of the weldments between unit hull blocks. In accordance with FEA results, principal factor controlling the amount of transverse residual stress at the weldments was identified as in-plane restraint degree of butt weldment for unit blocks. The effect of other variables on the transverse residual stress was very small relatively.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• v.11 no.2
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• pp.15-29
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• 2007

In this paper, we explore some interesting models of the quasi-negative-binomial distribution based on difference differential equations applicable to theory of microorganisms and the situations like that. Some characterizations based on conditional distributions and damage process have been obtained. Further, the distribution of number of accidents as the quasi-negative-binomial distribution in the light of Irwin's theory of ";proneness-liability"; model has been derived. Finally, the proposed model (QNBD) has been applied to study the Shunting accidents, home injuries, and strikes in industries.

• Educational Technology International
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• v.20 no.2
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• pp.137-168
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• 2019

This study examined the effects of information volume and distribution on learners' cognitive load and recall in a mobile augmented reality (AR) environment. Information volume refers to the degree of information users are provided in a learning task, while information distribution indicates the way in which information is distributed, either in a virtual or real format. Sixteen undergraduate students participated in the study, which employed a 2 × 3 randomized block factorial design with repeated measures. Information volume and distribution were independent variables, and factors in learners' cognitive load (mental effort, perceived ease of use, and perceived task difficulty) and recall test scores were the dependent variables. Information volume had significant main effects on perceived ease of use and task difficulty, and recall test scores, while information distribution had significant main effects on perceived task difficulty and test scores. A detailed discussion and implications are provided.

• Journal of Korean Home Economics Education Association
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• v.11 no.2
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• pp.65-76
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• 1999

The purposes of this study are (1) to research the purchasing consumption and disposing skill of adolescents and related variables and (2) to provide some informations about the consumer education program and policy for adolescents. The survey of this study was conducted using questionnaires. The data used in this study included 649 adolescents in Phohang. The statistics used for data analysis were frequency distribution, mean, standard deviation, analysis of variance(ANOVA) with Scheffe'-test. T-test, Multiple Regression Analysis, using the SPSS Win program. The results of this research were as follows：1) Purchasing skill was different significantly according to sex, grade, mother’s educational level, the degree of keeping an account book, the degree of checking after using the pocket money, interest on the contents related with consumer’s daily life and communication about consumption with their friends and parents. Consumption skill was different significantly according to grade, amount of pocket money, the degree of keeping an account book, the degree of checking after using the pocket money, interest on the contents related with consumer’s daily life and communication about consumption with their parents. Disposing skill was different significantly according to grade, from of school amount of pocket money, the degree of keeping an account book, the degree of checking after using the pocket money, interest on the contents related with consumer’s daily life and communication about consumption with their parents. 2) The most influential variable of purchasing, consumption & disposing skill was ‘communication about consumption with their parents’ and ‘the interest on the contents related with consumer’s daily life’respectively.

• Journal of the Korean Applied Science and Technology
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• v.21 no.4
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• pp.335-344
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• 2004

In this work, the properties as polishing wax for automobile of O/W type microemulsion containing wax, liquid paraffine and quaternaryammonium salt was investigated. The microemulsions were prepared at $96{\sim}97^{\circ}C$ by the phase inversion method, and polyoxyethylene(20) sorbitan monooleate (POE(20)SMO) and distearyl dimethyl ammonium chloride(D.D.A.C) as the emulsifiers were used. The mean particle size of the rnicroemulsions was about 7${\pm}$0.5nm and as the properties of polishing wax, gloss increased degree, water resistant gloss degree, initial and final contact angle after water resistance were tested. The result was that the value of water resistantance and contact angle were decreased with increasing amount of POE(20)SMO and D.D.A.C., while the gloss degree values did not affected. And the rnicroemulsion blended with mono ethylene glycol(MEG) of 5${\sim}$15wt% showed smaller particle size and more stable particle size distribution than without MEG. Finally, this microemulsion showed more excellent values of gloss degree, the water resistant gloss degree and contact angle, than two kinds of commercial polishing wax for automobile.

• The Journal of Asian Finance, Economics and Business
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• v.7 no.8
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• pp.259-268
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• 2020

The study investigates the association between CEO education and firm performance with a sample of 85 nonfinancial firms listed on the Saudi stock exchange during 2018 applying ordinary least squares method. CEO education is defined by three variables, the level of education, if the degree-granting institution is domestic or foreign, and if the highest degree is in management or other fields of study. Financial performance is measured by return on assets and return on equity. Firm size, age, liquidity and growth are introduced as control variables. The study shows that 58 CEOs of the firms studied are graduates, 38 have obtained their degree from a domestic institution and 44 have a management degree. Graduate CEOs are found to enhance performance. Graduating from a domestic institution influences performance positively. Management degree of CEO does not seem to impact performance. Firm size, liquidity and growth are positively associated with performance. Firm age does not explain performance differences of firms. Results are robust to performance measures. The findings of the study suggest that firms can benefit from a CEO hiring policy that emphasizes on the minimum qualification set as graduation or higher, education from a domestic institution and no undue weight on management qualification.

• Steel and Composite Structures
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• v.45 no.3
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• pp.425-436
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• 2022

The mechanical behaviors of the prefabricated steel-concrete composite beams are usually affected by the strength and the number of shear studs. Furthermore, the discrete degree of the arrangement for shear stud clusters, being defined as the clustering degree of shear stud λ in this paper, is an important factor for the mechanical properties of composite beams, even if the shear connection degree is unchanged. This paper uses an experimental and calculation method to investigate the influence of λ on the mechanical behavior of the composite beam. Five specimens (with different λ but having the same shear connection degree) of prefabricated composite beams are designed to study the ultimate supporting capacity, deformation, slip and shearing stiffness of composite beams. Experimental results are compared with the conventional slip calculation method (based on the influence of λ) of prefabricated composite beams. The results showed that the stiffness in the elastoplastic stage is reduced when λ is greater than 0.333, while the supporting capacity of beams has little affected by the change in λ. The slip distribution along the beam length tends to be zig-zagged due to the clustering of studs, and the slip difference increases with the increase of λ.

• Journal of Ecology and Environment
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• v.43 no.2
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• pp.191-201
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• 2019

Macroecologists and biogeographers continue to predict the distribution of species across space based on the relationship between biotic processes and environmental variables. This approach uses data related to, for example, species abundance or presence/absence, climate, geomorphology, and soils. Researchers have acknowledged in their statistical analyses the importance of accounting for the effects of spatial autocorrelation (SAC), which indicates a degree of dependence between pairs of nearby observations. It has been agreed that residual spatial autocorrelation (rSAC) can have a substantial impact on modeling processes and inferences. However, more attention should be paid to the sources of rSAC and the degree to which rSAC becomes problematic. Here, we review previous studies to identify diverse factors that potentially induce the presence of rSAC in macroecological and biogeographical models. Furthermore, an emphasis is put on the quantification of rSAC by seeking to unveil the magnitude to which the presence of SAC in model residuals becomes detrimental to the modeling process. It turned out that five categories of factors can drive the presence of SAC in model residuals: ecological data and processes, scale and distance, missing variables, sampling design, and assumptions and methodological approaches. Additionally, we noted that more explicit and elaborated discussion of rSAC should be presented in species distribution modeling. Future investigations involving the quantification of rSAC are recommended in order to understand when rSAC can have an adverse effect on the modeling process.

• Journal of Sensor Science and Technology
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• v.17 no.3
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• pp.210-216
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• 2008

The propose of this study is evaluating which correlation of foot pressure distribution and scoliosis that happen by walking to 20'th Mens that have not experienced a scoliosis. The propose of this study is evaluating which correlation of foot pressure distribution and scoliosis that happen by walking to 20'th Mens that have not experienced a scoliosis. Measurement and analysis of Foot Pressure was executed by using by F-scan System. Degree of scoliosis was expressed as a angle used x-ray image of 5-lumbar from 4-thoracic vertebra The correlation between result of foot pressure and degree of scoliosis was evaluated under 0.05 interrelationship, and variables used for analysis were showed high correlation.