• Asia Marketing Journal
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• v.11 no.4
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• pp.21-48
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• 2010

This article analyzes film performances in the Korean movie market utilizing three-stage models that incorporate available information in three different stages of the movie life cycle, i.e., at the time of its release, at the end of the first week, and at the end of its life cycle. Based on the premise that the performance of a movie is affected principally by factors of scale, evaluation, and competition, we attempted to ascertain the effects on these factors on performances, and how they differ in different stages. Also, by analyzing domestic and foreign movies released in Korea separately, we were able to compare the different effects of the three factors on the performances of the two categories of movies. Additionally, our movie performance models incorporated herding behavior among the customers. Our results demonstrate that herding is prominently observed after the first week only for domestic movies. In general, the scale factor has been shown to be most important for movie performances in all stages. For foreign films, it is particularly critical for the first week and total performances. Whereas the evaluation factor influences domestic film performance more strongly at the screen choice stage, it affects the performance of foreign films more strongly in the later stages of the life cycle. As compared to foreign films, domestic film performance appears to be more sensitive to the competition factor. We also discuss the effects of covariates such as genre and symbolicity on movie performance.

• Korean Journal of Social Welfare Studies
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• no.39
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• pp.315-342
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• 2008

The aim of this study was to examine growth trajectories of delinquent behaviors during adolescence. In addition, the effects of protective and risk factors that might account for individual difference in the level of delinquent behaviors and in the rate of change were examined. Four waves of data in the Korea Youth Panel Survey(KYPS) were used to analyze the linear growth modeling. The sample consisted of 3346 adolescents who were assessed at 4 measurement waves with approximately 1-year intervals. The results showed significant individual differences in both final level of delinquent behaviors and in the rate of change across 3 measurement occasions. Adolescent gender, family's socioeconomic background predicted the final level and the rate of change of delinquent behaviors. The protective effects of positive parenting and self-control were significantly associated with problem behaviors and the risk effects of the association with deviant peers and negative stigma were significant on the final level of delinquency. Self-control and deviant peer affiliation had differential influences over time significantly. Practice and policy implications as well as further research topic were discussed in the light of searching for important factors in preventing adolescent problem behaviors.

• Korean Journal of Social Welfare
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• v.59 no.3
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• pp.201-227
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• 2007

This study is to investigate determinants of social workers' career commitment, compare the level of career commitment of social workeks by social work organization, and analyze the effects of career commitment on job attitudes. Social workers working for government agencies and community welfare centers and institutions in Busan city and Gyeongnam province were surveyed using structured questionnaires and 326 usable questionnaires were obtained. The questionnaires were analyzed for job, career, role, and organizational justice characteristics models and comprehensive model using SPSS/PC+.. The results are as follows; the level of social worker's career commitment was relatively high but the level of career commitment of social workers working for government agencies was slightly lower than that of social workers working for private agencies. According to the demographic characteristics, the level of career commitment of males was higher than that of famales. That of older workers was higher than that of younger worker, that of 2nd rank workers was higher than that of 1st rank workers. Task significance, task identity, feedback for the job done, career satisfaction, low role conflict, high distributive justice and interactive justice were related to higher level of career commitment while the skill variety was related to the lower level of career commitment. However, the main determinants differ according to the social work organization. Career commitment affected negatively on the career turnover intention while it affected positively on organizational commitment, organizational citizenship behavior, job involvement, and intrinsic job satisfaction. Therefore, different approaches and systematic measures are needed according to the organization.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.29 no.2D
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• pp.199-207
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• 2009

We tried to show the course of UTIS vitalization, promoting to introduce as part of the advanced traveler information system through analysis using traffic information gap model of service and structural equation modeling being used by drivers. The summary of the research is as follows. 1. We could find out the service matters needed to improve and what should be prior that make drivers' use increase through establishing the gap model of service. 2. We could establish the structural equation modeling through using traffic information use satisfaction rate, entire traffic information satisfaction rate as the observation variables. You can say it is the fruit of this research that it was confirmed the entire satisfaction rate of traffic information influenced extension, convenience, accuracy, economical efficiency in order. We could also arrange the base to determine the order of services for vitalization of UTIS in the future through grasping the priority of each service functions classified by factors. 3. It is confirmed that many drivers want multimedia function, driving support function and various functions for the personal convenience in situations except driving, which enable the drivers to enjoy leisures and interests rather than economical functions during driving due to the recent social and economic changes.

• International Commerce and Information Review
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• v.14 no.3
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• pp.97-112
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• 2012

This study aims to analyse determinants of payment balance of Korea, targeting 65 countries which concluded FTA with Korea in 2012 or are pursuing it with Korea( effectuation, agreement, negotiation and joint research). For an analysis model, economic and geographical variables of target countries were included in explanatory variables of the gravity model and divided values which indicate surpluses or deficits in trade with Korea were marked in dependent variables to perform a logistic analysis. If payment balance in trade between Korea and specific countries is a surplus, a value of 1 is given and if it is a deficit, a value of 0 is given. As a result of estimating the logit model, it was discovered that variables of GDP, GDP per person, total trade with trade partners, petroleum, landlocked countries and maritime powers were not statistically significant. However, variables of total trade, export dependency, import dependency, distance and mineral were statistically significant.

• Journal of Korean Society of Transportation
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• v.28 no.3
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• pp.99-107
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• 2010

Analyzing mode choice among transportation demand estimate procedures is complicated and understanding characteristics of travelers is also difficult. Generally, it is well known that traveler choose mode considering psychometric factors and characteristic besides socio-demographic indicators. Accordingly, many researches has investigated on methodology that can be applied in mode choice to reflect psychometric factor or specific preference. Latent Class Analysis among various studies is recognized as the theoretically potential approach. This study focuses on class segmented using latent class cluster to analyze impact that included psychometric factors and characteristics on mode choice. It also provides evidence that mode choice model for each class and mode choice model not considering latent class are different. This study based on citizen's stated preference and revealed preference on a new transit on the Han river shows that latent class cluster analysis is the potential approach considering latent preference.

• The Korean Journal of Archival Studies
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• no.47
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• pp.255-286
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• 2016

This study aims to propose a tool for a comparison of public electronic records management in a public institution and a private records management facility and to reveal the considerations prior to decisions on the way of management. For developing a tool, it chooses CoMMPER as a basic model and modifies it after reviewing existing cost models, because only CoMMPER can over public records management. Modified-CoMMPER is added a new cost area[Aquisition], and is modified and extended cost elements and generic cost factors for the comparison. Public institutions which consider whether commission the management of public electronic records can use Modified-CoMMPER for comparing economic impacts in terms of long-term preservation. To make a rational decision on the way of management based on the economic analysis, this study proposed 3 main task. Fist, the scope of the activities has to be defined, second, the cost-effectiveness has to be estimated base on the cost model, for example Modified-CoMMPER, third, policy-making for the management of public electronic records must be proceeded based on the various researches on the cost of records management.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.10 no.2
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• pp.59-65
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• 1990

This study investigates the effects of human impact and precipitation on groundwater flow conditions at a small area in Dejima Upland using a transient three-dimensional simulation. To show the utility of the transient three-dimensional model, the results of the numerical model are compared with those of Theis problem for which analytical solution is available. It appears that over the time period studied, the results of the model agree well with the analytical solution. Simulation is undertaken for a period of 30days starting from May 1st, when irrigation starts. Groundwater flow patterns determined by a numerical model are presented in the form of plotted potential lines and discussed. Results of simulation clearly indicate that the groundwater flow system should be analysed using a transient three-dimensional model, especially for the region which is effected by human impact.

• Korean Journal of School Psychology
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• v.9 no.3
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• pp.485-503
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• 2012

Academic engagement has been known as a strong predictor of students' cognitive and affective outcomes in an educational context. Despite increasing interest and theoretical usefulness of this construct, a few researchers seem to be interested in the validation of instruments to measure academic engagement for Korean students. Thus, this study would like to introduce one of academic scales widely used, UWES-S(Utrecht Work Engagement Scale-Student) (Schaufeli et al., 2002a: 2002b) and to validate the UWES-S for Korean college students. To validate the Korean version of the UWES-S, 651 college students (285 for Field Trial, 366 for Main Study) were used. The procedure is as follows. First, we used an integrated adaptation procedure to produce a Korean version of the UWES-S. Second, EFA(exploratory factor analyses) was applied to explore the factor structure of the UWES-S on the field trial data. Third, the psychometric properties of the UWES-S items were examined by graded response model(GRM). Also CFA(confirmatory factor analysis) was used to examine its internal construct validity for the data from the main study. Finally, the external validity of the UWES-S was scrutinized with the related variables such as academic motivation and satisfaction. As a result, the Korean version of the UWES-S with 13 items was accepted that the four items were excluded from its original version. Second, the internal validity was supported that the 3 factor CFA model(vigor, dedication, absorption) fit the data well. Third, we supported the partial mediation model that academic engagement played as a mediating variable between academic motivation(internal/external) and academic satisfaction. Finally, the differences between a validation of UWES-S for Korean college and high school students, the necessity of construct equivalence testing, and direction for future research of scale validating were discussed.

• Journal of Animal Science and Technology
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• v.45 no.5
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• pp.711-724
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• 2003

Some growth curve models were used to fit individual growth of 1,083 Hanwoo cows born from 1970 to 2001 in Daekwanryeong branch, National Livestock Research Institute(NLRI). The effects of year-season of birth and age of dam were analyzed. In analysis of variance for growth curve parameters, the effects of birth year-season were significant for mature weight(A), growth ratio(b) and maturing rate(k)(P〈.01). The effects of age of dam were significant for growth ratio(b) but not significant for mature weight(A) and maturing rate(k). The linear term of the covariate of age at the final weights was significant for the A(P〈.01) and k(P〈.01) of Gompertz model, von Bertalanffy model and Logistic model. For the growth curve parameters fitted on individual data using Gompertz model, von Bertalanffy model and Logistic model, resulting the linear contrasts(fall-spring), Least square means of A in three nonlinear models were higher cows born at fall and A of Logistic model was significant(P〈.05) between the seasons. According to the results of the least square means of growth curve parameters by age of dam, least square means of mature weight(A) in Gompertz model was largest in 6 year and smallest estimating for 3 and 8 years of age of dam. The growth ratio(b) was largest in 2 year of age of dam and smallest estimating in 8 year. The A and k were not different by age of dam(p〉.05), On the other hand, the b was different by age of dam(p〈.01). The estimate of A in von Bertalanffy model was largest in 6 year and smallest in 8 and 9 years of age of dam. The b was largest in 2 year and tend to decline as age of dam increased. The A and k were not different by age of dam(p〉.05), On the other hand, the b was highly significant by age of dam(p〈.01).