• Korea and Global Affairs
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• v.1 no.2
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• pp.243-270
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• 2017

The purposes of this paper are twofold: First, to discuss ways and limits of studying politics scientifically; second, to examine group theories to the study of political science. To answer the first question, I examine philosophy of science, methods of scientific research, and limits of scientific study of politics. As a subject matter itself, political science involves the study of human beings and the discovery of explanations for the political behavior that they exhibit. This discovery of regularities of behavior in politics inevitably requires that human beings act consistently or discoverable manner. I argue that the best way of studying politics as much as possible is to combine traditional and scientific approaches depending upon issues, The second section of this paper will examine one of important middle-range theory of politics; group theories (approaches). Examining this will show strength and limits of studying politics scientifically. The group approaches examine the importance of role that people hold in the political system as well as the relationship between the action of collective group and its impact on the political behavior. Overall, the group approaches tend to deal with individuals in specific societal contexts and with varying distributions of power between the actors. This group approaches are premised on the belief that political activity involves more than just one individual, political activity occurs instead through individual actors in particular settings. I argued that group theories have some explanatory power and descriptive richness, though it has limitations.

• CRM연구
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• v.3 no.1
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• pp.49-71
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• 2010

This study set out to shed more specific light onto sales managers' coaching and salespersons'organizational commitment and role perceptions, which have been proven to work as important variables in salespersons' performance. It thus conducted an in-depth investigation into the overall sale management activities of sales managers from five high-sales organizations and five low-sales organizations and analyzed differences between them. The interviews of the ten sales managers were combined and analyzed. As a result, the ones from the high-sales organizations demonstrated the following characteristics: first, the salespersons of the high-sales organizations were strongly committed to the goals and values of their organizations. Second, the salespersons of the high-sales organizations had clear perceptions of their roles and showed relatively fewer role conflicts than those of the low-sales organizations. Third, the sales managers of the high-sales organizations demonstrated coaching behavior strongly. They provided positive feedback and role models for the salespersons to follow, thus earning great respect from them and maintaining trust-based relationships with them. And finally, the sales managers' organizational commitment and role perceptions had positive impacts on the salespersons' organizational commitment and role perceptions. Those research findings indicate that sales managers' organizational commitment and role perceptions can be a positive role model to salespersons and that such a role model can have influences on salespersons' performances as part of the characteristics of coaching behavior.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.2
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• pp.578-587
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• 2020

The purpose of this study was to provide information to prevent and manage the risk factors of adolescent health behavior by identifying the relationship between smartphone use and the intake of sugar-sweetened beverages of Korean adolescents. Data from the 2017 Korean Youth Risk Behavior Survey of 54,603 adolescents was used for this study. The study examined the variables related to general characteristics, smartphone use, and intake of sugar-sweetened beverages. Complex sample analysis was done by performing multivariate logistic regression analysis. Smartphone usage time (aOR = 2.19, 95%CI = 2.05-2.34) and smartphone use for communication (aOR = 1.51, 95%CI = 1.43-1.60) were associated with three or more times per week of SODA beverage intake. In addition, adolescents who experienced conflicts with family were associated with SODA beverage intake (aOR = 1.42, 95%CI = 1.33-1.51), conflict with friends was associated with sweet beverage intake (aOR = 1.39, 95%CI = 1.30-1.49), and study problems were associated with SODA beverage intake (aOR = 1.79, 95%CI = 1.54-2.07). Therefore, controlling the use of Smartphones in schools and homes and creating an environment in which communication skills can be learned can help adolescents reduce the intake of sugar-sweetened beverages. Positive relationships with family and friends, and appropriate management of academic stress can help reduce inappropriate health behaviors associated with smartphone use by adolescents.

• Asian Pacific Journal of Cancer Prevention
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• v.17 no.7
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• pp.3341-3355
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• 2016

Background: A recent WHO data report on mortality attributable to tobacco use including cigarette smoking indicated a very high burden of deaths in Asia and that people often initiate smoking as early as young adolescents. The objectives of this study were to systematically review peer-reviewed articles on cigarette smoking initiation among Asian adolescents and to develop a conceptual model of factors influencing smoking initiation by integrating all relevant factors based on existing data. Materials and Methods: Following a PRISMA guideline, a systematic review of articles published between 2005 and June 2015 was conducted using 5 databases on cigarette smoking initiation among adolescents (aged 10-19 years) living in Asia. We summarized the main findings of each study according to our research questions and data that emerged during the data extraction process. Analysis and categorization were based on the TTI and TPB models and classification of factors extracted from the study, were as follows: personal factors, social factors, broader environmental factors, mediators, and intention to initiate smoking and smoking behavior. Results: Of 1,227 identified studies, only 20 were included in this review. Our findings found that the mean age of cigarette smoking initiation ranged from 10 to 14 years and those who are more likely to initiate smoking are male, older adolescents, adolescents with low parental SES, individuals with low parental monitoring, low parental education level and having no discussion on smoking at home, those living in public housing and those exhibiting health-risk behavior. Our study also revealed that the risk of smoking initiation increased when they are exposed to smokers, influenced by peers, exposed to tobacco advertisements, receive pocket money, have lack of knowledge about smoking, have poor school performance, have a family conflict and have psychological problems. The conceptual model developed demonstrated complex networks of factors influencing initiation. Conclusions: This systematic review presents various factors influencing smoking initiation of the Asian adolescents and provides a conceptual framework to further analyze factors. Future studies should have a standard measure of smoking initiation, should analyze interactions and the intensity of relationships between different factors or variables in the conceptual model. This will in turn consolidate the understanding of the different factors affecting smoking initiation and will help to improve interventions in this area.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.10 no.2
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• pp.169-177
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• 1999

Human being can be defined in several ways. These are biological, psychological, social and religious, ethical and philosophical aspects. The first two viewpoints refers to the intrapersonal aspects and the last two viewpoints deals with the interpersonal aspects. There have been numerous thoeries and hypotheses to explain the human behavior and psychopathology, but the author does not find any theory or hypothesis to integrate the biological and psychological viewpoints. In addition, The author does not find any theory to integrate the intrapersonal and interpersonal aspects in interpersonal relationships. Thus, the author proposed one model to explain the human behavior. In proposing this theory, the author has the following hypotheses：1) All human being can not exist by oneself. 2) The ultimate goal of all human being is to achieve 'Survival'. 3) There are four kinds of survivals and they are biological, psychological, social and religious, ethical and philosophical survivals. 4) Power and control are two prerequisites for survival and there are four kinds of power and control. 5) The four elements of power and control are biological, psychological, internal and external ones. 6) The conflict between buman being can also be explained in terms of power, control and survival. 7) Normality and abnormality of human behavior can be explained in terms of the harmony and balance among the powers and controls.

• Korean Journal of Social Welfare
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• v.51
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• pp.29-61
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• 2002

This study was designed to find out the determinants of types of bullying behavior, and the effects of types of bullying behavior on the bullies. For this purpose, a hypothetical model which explains the relationships among 6 environmental factors, 5 types of bullying behavior, and 5 outcome variables for the bullies was developed. Using the data collected from 177 junior and high school students who have bullied the other students, the hypothetical model was tested. For data analysis, a path analysis was used, and the best-fitting model was found (df=78, GFI=0.953, CFI=1.00). As a result of analyzing the model, types of bullying behavior were found to be determined by the different environmental factors: Isolation was determined by 2 factors (feeling of isolation from friends, exposure to bullying), social bullying by 2 factors (lack of support from parents, exposure to bullying), verbal bullying by conflicts with parents, physical bullying by 3 factors (lack of support from parents, exposure to isolation and exposure to bullying), and instrumental bullying by lack of support from parents. On the other hand, the pleasure that the bullies feel after bullying behavior was increased by isolation, verbal bullying and physical bullying, while decreased by instrumental bullying. Guilt feeling was decreased by isolation and instrumental bullying, while increased by physical bullying. Isolation increased the tendency of blaming the victim. Isolation and instrumental bullying increased bullies' self-esteem, while social bullying decreased self-esteem. Verbal bullying increased the extent of bullying, while instrumental bullying decreased the extent of bullying. Based on the findings, the intervention strategies to change the bullies' attitudes toward victim, and to increase social support from the significant others as well as the effective ways to reorganize the school environment in order to reduce and prevent bullying behavior were suggested.

• Journal of Korean Society of Transportation
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• v.29 no.4
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• pp.17-28
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• 2011

This study proposed a speed management strategy for the enhancement of traffic safety on freeways. A novel feature of the proposed strategy is to provide desirable speed information to individual vehicles. A microscopic traffic simulator, VISSIM, was used for the performance evaluation. Vehicle trajectory data were used to evaluate the various speed management scenarios including the different levels of proportions of heavy vehicles. The proposed speed management strategy would be a useful precursor for developing an effective traffic control and operations system to prevent traffic accidents on freeways.

• Journal of KIISE
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• v.44 no.3
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• pp.261-274
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• 2017

Variability management is the foremost criterion that defines the extent to which complexities can be handled in a system. Predominantly, the requirements' engineering (RE) study overlooks, or speculates a consistent behavior of, the environment in which a system functions. In real-time systems it is vital to observe and adjust to an intrinsically changing context. Therefore, in this work we identify the requirements of the system in various contexts by recommending a framework using i* goal model, problem frames, use case maps and live sequence charts. The framework is illustrated using a case study of the smart grid RTP system. In the case study, elaboration of scenarios using use case maps and live sequence charts proved beneficial as they assisted in early analysis and validation of contexts. In addition, the elaboration of requirements for obstacle and conflict analysis assists the requirements engineer to increase the robustness of the system. The proposed framework is evaluated theoretically and by empirical study.

• Proceedings of the Korean Association for Survey Research Conference
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• 2005.12a
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• pp.221-245
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• 2005

This research introduced the concept of 'alternative attractiveness' derived from the social exchange theory to the research model predicting turnover intention among salesforce. By doing so, we tried to broaden the understandings of relationship between salesperson job attitude and salesperson behavior. We collected and analysed the data from the survey on the 178 salespeople employed at the life insurance companies. We found the alternative attractiveness to be a significant antecedent of the turnover intention. Specifically, the more attractive the alternative the greater the intention of turnover. However, we also found that the salesforces are less attracted to the alternative if they are more satisfied with their jobs. Finally, this research can be a seminary work with the relational perspective for the studies of salesforce management.

• Journal of Computing Science and Engineering
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• v.7 no.4
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• pp.285-299
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• 2013

To enable hard real-time systems to take advantage of multicore processors, it is crucial to obtain the worst-case execution time (WCET) for programs running on multicore processors. However, this is challenging and complicated due to the inter-thread interferences from the shared resources in a multicore processor. Recent research used the combined cache conflict graph (CCCG) to model and compute the worst-case inter-thread interferences on a shared L2 cache in a multicore processor, which is called the CCCG-based approach in this paper. Although it can compute the WCET safely and accurately, its computational complexity is exponential and prohibitive for a large number of cores. In this paper, we propose three counter-based approaches to significantly reduce the complexity of the multicore WCET analysis, while achieving absolute safety with tightness close to the CCCG-based approach. The basic counter-based approach simply counts the worst-case number of cache line blocks mapped to a cache set of a shared L2 cache from all the concurrent threads, and compares it with the associativity of the cache set to compute the worst-case cache behavior. The enhanced counter-based approach uses techniques to enhance the accuracy of calculating the counters. The hybrid counter-based approach combines the enhanced counter-based approach and the CCCG-based approach to further improve the tightness of analysis without significantly increasing the complexity. Our experiments on a 4-core processor indicate that the enhanced counter-based approach overestimates the WCET by 14% on average compared to the CCCG-based approach, while its averaged running time is less than 1/380 that of the CCCG-based approach. The hybrid approach reduces the overestimation to only 2.65%, while its running time is less than 1/150 that of the CCCG-based approach on average.