• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.6
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• pp.325-331
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• 2020

Even though numerous studies on the relationship between high-performance work systems (HPWSs) and organizational performance have been conducted over the past three decades, empirical evidence is still lacking in the aspects of context and performance. Thus, this study aims to investigate how HPWSs influence organizational performance, especially innovation performance as a key factor to increase the organization's sustainability. In addition, this study examines how human competency and customer service competency as crucial conditions to facilitate organizational innovation moderate the relationship between HPWSs and organizational performance. To examine these hypotheses, this study used Human Corporate Capital Panel datasets. The results of longitudinal analyses show that HPWSs positively affected organizational performance, and the two competencies strengthened the positive main effect, as we expected. In the discussion parts, this study suggests implications and limitations.

• Korean Journal of Social Welfare
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• v.66 no.1
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• pp.35-59
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• 2014

The purpose of this study is to investigate determinants of the saving behaviors, perceptions of economic situation and attitudes on the program of the Individual Development Account program participants in Korea. Data used for this article was the survey on the participants of 'Seoul Hope-plus Saving Account Program' implemented by Seoul Welfare Foundation for 3 years. In order to consider variances within-individual and between-individuals, Hierarchical Linear model is used for this study. The results are as follows. First, In demographic factors, disability, gender, education level, marriage status are significant factors on the effectiveness of the program. Second, the participation on the program has positive effects on the conception on the living standard and economic status of the participants. However, total amount of savings excluding savings on 'Hope plus' has decreased. The household income is positively related with the amount of savings. Thus, it is necessary to consider individuals' socio-demographic factors to planning the asset-based program.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.16 no.4
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• pp.25-58
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• 2021

This study investigated the corporate growth with more emphasis on longitudinal characteristics, not the results of companies with relatively more emphasis on cross-sectional, in the 21st-century entrepreneurial context. As of the end of 2019, sampled 479 global unicorn companies, and 333 high-growth companies with revenue of more than $100 million among 5,000 private companies in the U.S. with a compound annual growth rate (CAGR) exceeding 15% for the past three years. They were examined with 3 perspectives in terms of corporate growth that 1) the growth of enterprise value, 2) the pace of growth, and 3) the effectiveness of growth. As a result of our study, the corporate growth of the perspective of creating enterprise value had a relatively higher relationship with the characteristics of industries and markets. The pace of growth was more fully explained by the characteristics of the industry and the market environment and the choice of strategies that make up a valid combination. In addition, growth in terms of the effectiveness of corporate performance was influenced by the choice of strategy, the characteristics of the industry and market environment, and its business age, the proxy variable of resource accumulation, comprehensively. This study through a sample based on companies with an enterprise value of more than $1 billion and annual revenue of more than $100 million can be a valid reference in terms of creating milestones and roadmaps for scale-up of early-stage startups, particularly in terms of practitioners' point of view. It also provides a critical reference for overcoming the limitations of mainstream theories of the 20th century and developing the theory of corporate growth that fits the 21st-century entrepreneurial context.

• Survey Research
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• v.12 no.2
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• pp.1-26
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• 2011

Mortality for oldest-old age (aged 80 or over) in Korea has never been studied mainly due to lack of data leaving its quality aside. The rapid aging recently occurring in Korea, which no other country has never experienced, must introduce a drastic change in the structure of future population pyramid, requring a careful investigation on mortality level, pattern, and trend for the oldest-old age in Korea. For mortality trend, we need to extend the past mortality data, which has provided only an open-ended age interval 80 or 85 years and over, to age-specific mortality up to 115 years old. A prerequisite for such an extension is constructing a Korean standard mortality by which one can figure out the mortality level and pattern of the oldest-old age. A Korean standard mortality is proposed by applying one relational model and eleven functions from which we select best models for each sex in terms of three measures of fits and three consistencies of mortality. Then we extend the mortality of the open-ended age intervals by providing a method to avoid the longitudinal consistency of mortality.

• Korean Journal of Social Welfare Studies
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• v.48 no.2
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• pp.303-329
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• 2017

This study aimed to explore the trajectories of computer game use of school age children and to identify the related predictors. The data for this study used Korean Children and Youth Panel data covering from the second year to the sixth year of elementary school. A total of 1,959 participants were analyzed. Latent class growth model was employed to explore the trajectories of computer game use and multinomial logistic regression was conducted to identify the significant predictors. Main results indicated that three types of trajectories were identified: low game using group, high initial using-fluctuating group, and high increasing game using group. Each group was found to be associated deferentially with sex, aggression, attention deficit, main caregiver's education, siblings, parent absence after-school, neglecting, family income, family trip, school grades, and peer relationship. Based on these findings, this study emphasized the importance of predictive intervention for the game user among early school age children and suggested useful practical strategies.

• Korean Journal of Social Welfare Studies
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• v.43 no.2
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• pp.61-85
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• 2012

The purpose of this study is to examine whether the national pension affects the life satisfaction of old age, using the first and third-wave data from the Korean Retirement and Income Study. The study analyzes the relationship between the national pension and life satisfaction, using several operational definitions of these two variables. This study utilizes the Difference-in-Difference(2D) models and panel data analysis. The main results are : First, the result of simple 2D shows that there is not significantly difference between the pensioner and that of non-pensioner. Second, the result of 2D regression also shows that pension is not significantly associated with life satisfaction of the old age. Lastly, the result of fixed-effect model confirms that the national pension does not have a statistically meaningful effect on the life satisfaction, controling for the unobserved characteristics of the old age. This study also conducts sensitivity analysis and discusses policy implications.

• Korean Journal of Social Welfare
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• v.69 no.1
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• pp.59-77
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• 2017

The purpose of this study is to understand Korean women in later life by identifying the relationships between providing care for grandchildren and the health of women who aged above 50 years old. Focusing on the longitudinal patterns of providing care of grandchildren and physical and psychological health, this study used data from the second, third, fourth, and fifth waves of Korean Retirement and Income Study(KReIS) and regression to analyze the data. The following results were found. First, women who stopped providing care for grandchildren were more likely to have higher physical health status in later life than those who providing no care between the second wave to the fourth wave of the KReIS(p < .05). In addition, women who have continuously provided care for grandchildren were more likely to have lower physical health status at marginally significant level. However, there is no significant relationship between providing care for grandchildren and women's psychological health status. The findings of this study suggest that there are the different findings for the relationships between providing care for grandchildren and physical health status and psychological health status based on the longitudinal patterns of providing care of grandchildren. Lastly this paper discusses implications for future researcher and social welfare practitioners.

• Journal of the Korean Geographical Society
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• v.29 no.3
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• pp.253-265
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• 1994

The hydraulic-geometrica1 relations between the riverbed slope and water discharge and other hydraulic variables in some selected alluvial rivels in Korea have been investigated. The rivers from which the data relevant to this study were collected are mainly the first tributaries, considered to be mostly in the equilibrium state, of the 10 major rivers in Korea. The investigating methods adopted in this study are similar to the one suggested by Leopold and Maddock and the one suggested by Garde. All of 18 rivers their drainage areas of which range between 100-2,000 $\textrm{km}^2$ were considered and the changes in riverbed slope, drainage area, bed material size along the downstream river distance were measured. It is found in this study that the change in the riverbed slope, S, along the downstream can be expressed in terms of the coefficient, $\beta$, expressing the change in the drainage area along the downstream and the drainage area, A, by an empirical relation as 0.0063 0.0063 S = $S_{ 0}$ $A_{0}$$^{-------- +0.51}$A-$^{-------- -0.51}$. $\beta$ $\beta$ According to this relation, the riverbed slope of the river reaches investigated in this study appear to be proportional to the -0.6th power of the drainage area. This result is consistent with the previous ones obtained by Hack.k.

• Korean Journal of School Psychology
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• v.11 no.1
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• pp.253-274
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• 2014

The present study classified groups based on latent profile of self-determination motivation(amotivation, external motivation, intrinsic motivation), and examined the determinants for each group. The data was collected through panel data of Korea Education Longitudinal Study(KELS), total 5,459 participants who answered questionnaires of self-determination motivation of two times both second grade of middle school and second grade of high school. To identify the change motivational type, standardized residual was conducted using SPSS 17.0., and the latent classes for the change of motivational type was investigated using M-Plus in the frame work of Latent Profile Analysis(LPA). The results indicated that five groups(increase of self-determination, self-determination maintenance, self-determination developmental delay, elf-determination confusion, decrease of self-determination group) were classified based on latent profile. In addition, parental control, academic self-concept, teacher-student relationship, test anxiety, avoidance orientation, gender, father's education, and income were significantly related to each group. Lastly, the implications for directions of the adolescent counseling, limitations and future research are discussed.

• Survey Research
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• v.18 no.2
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• pp.67-98
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• 2017

The purposes of this study are to identify the latent classes of school violence depending on bullying and victimized experience by type and the influences of individual-level and school-level variables on determining these latent profiles. For these research goals, the present study utilized data from the Seoul Education Longitudinal Study(SELS) 5th wave, containing data from 2,195 middle school students who experienced school violences more than once. Multilevel latent profile models were applied to examine school violence among students. Our results indicated that there were four latent classes; high-level bullying and victimized group (1.7%), mainly bullying group(2.1%), mainly victimized group(3.7%), verbal bullying and victimized group(92.5%). Gender, resilience, self-control, peer relationship, parental relationship were significant determinants of the latent profiles at student level. Teacher-student relationships, school violence prevention, gender ratio of school were significant determinants of the latent profiles at school level. The present study contributed to extending theoretical discussions by classifying students into groups based on frequency and different forms of bullying and victimization. Moreover, this study examined determinants of student and school level simultaneously by dealing with multilevel data.