• KIPS Transactions on Software and Data Engineering
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• v.3 no.9
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• pp.369-374
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• 2014

Path generation methods are required for safe and efficient driving in unmanned autonomous vehicles. There are two kinds of paths: global and local. A global path consists of all the way points including the source and the destination. A local path is the trajectory that a vehicle needs to follow from a way point to the next in the global path. In this paper, we propose a novel method for local path generation through machine learning, with an effective curve function used for initializing the trajectory. First, reinforcement learning is applied to a set of candidate paths to produce the best trajectory with maximal reward. Then the optimal steering angle with respect to the trajectory is determined by training an artificial neural network. Our method outperformed existing approaches and successfully found quality paths in various experimental settings, including the cases with obstacles.

• Journal of Digital Convergence
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• v.8 no.2
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• pp.43-54
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• 2010

While entrepreneurship is touted as an opportunity for women to exploit opportunities that are often not available in the traditional workplace, the rate of participation in entrepreneurship is lower for women than it is for men. What remains relatively unclear are the reasons that make this so. This regional study addresses this deficiency by examining two lines of thought related to entrepreneurial adoption: (1) the personal traits thought to contribute to entrepreneurship, and (2) the rational decision making processes that are believed to form a basis for entrepreneurial endeavors. My results find men and women to be different in both respects, with ambiguity tolerance, internal locus of control, perceived effectiveness of entrepreneurship, and having an entrepreneurial parent all positively predicting entrepreneurial intention for men. For women, perceived effectiveness of entrepreneurship and achievement motivation predict entrepreneurial intention. Women also rate the potential reward of entrepreneurship as significantly lower than do men, possibly because women entrepreneurs objectively face more obstacles than men with regard to obtaining financing and other stakeholder relations.

• Journal of Korean Clinical Nursing Research
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• v.18 no.2
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• pp.215-227
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• 2012

Purpose: This study was conducted to examine clinical nurses' perceptions on the nursing organizational culture and investigate the differences in their perceptions according to age groups in South Korea. Methods: Participants were 1,087 nurses from 25 general hospitals in South Korea. Data were collected from July 29 to September 30 in 2011, and were analyzed using descriptive statistics, ANOVA with $Scheff{\grave{e}}$ test, and factor analysis. Results: Nurses perceived nursing as an excellent professional job which progresses continually. Autonomy and individualized reward to their professional work, however, were reported not-satisfactory to them. They agreed that nurses are punctual, polite, honest, and responsible, while disagreeing in competitiveness. There were differences in perceiving cultural factors according to age groups. The subjects in their over 40s perceived 'professionalism', 'normative', 'strictness', 'rightfulness', and 'community spirit' strongly, while nurses in their 20s perceived 'conservatism' highly. Also, nurses' perception on the organizational commitment and job satisfaction were high in over 40s while turnover intention was high in other groups. Conclusion: Nurse managers need to assess the perception on nursing organizational culture in order to improve nursing work environment better. In addition, it is necessary to take into account seriously the generation gap to build supportive nursing organizational culture.

• Anxiety and mood
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• v.8 no.2
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• pp.133-140
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• 2012

Objective : The aim of this study was to investigate how trauma and personality system was related by comparing TCI profiles of the trauma versus non-trauma groups and PTSD symptom positive (PTSD symptom [+] group) and PTSD symptom negative groups (PTSD symptom [-] group). Methods : We compared the difference of Temperament and Character Inventory (TCI) profiles between the trauma (n=61) and the non-trauma (n=61) groups, and between the PTSD symptom [+] group (n=40) and PTSD symptom [-] group (n=21). Results : Comparison of the TCI's seven higher dimensions between the PTSD symptom [+] and [-] groups showed significant differences only in C (Cooperativeness). And in the analysis of TCI's lower dimensions the significant differences were observed in the HA1 (Worry and pessimism), HA2 (Tension regarding uncertainty), and C4 (Compassion) subscales. However, significant differences in the higher dimensions appeared more clearly between the non-traumatized group and the traumatized group. Compared to the non-traumatized group, the traumatized group scored significantly higher in HA (Harm avoidance) and RD (Reward dependence), while lower in SD (Self-directedness). Conclusion : Overall, present results suggest that traumatic experiences may affect personality systems regardless of the development and of PTSD symptoms.

• Anxiety and mood
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• v.14 no.1
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• pp.7-13
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• 2018

Objective : To determine the association between occupational stress and disordered eating problem in Korean female employees. Methods : We studied 1,452 female employees who attended mental health screenings. Using the Korean Occupational Stress Scale-Short Form (KOSS-SF) and 26-item Korean version of Eating Attitude Test, occupational stress and disordered eating problem were evaluated, respectively. Sociodemographic and clinical characteristics of those with disordered eating problem were examined. Multiple logistic regression analysis was performed to determine which subscale of KOSS-SF was associated with disordered eating problem. Results : Disordered eating problem was associated with interpersonal conflict [odds ratio (OR) 1.882, 95% confidence interval (CI) 1.138-3.112] among various kinds of job stresses. Lack of reward (OR 7.164, 95% CI 1.139-45.043) and insufficient job control (OR 1.953, 95% CI 1.119-3.411) were associated with disordered eating problem in the underweight and normal weight group, respectively. Conclusion : There is an association between occupational stress and disordered eating problem among Korean female employees.

• Anxiety and mood
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• v.13 no.1
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• pp.39-45
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• 2017

Objective : Korean employees tend to release their stress by alcohol drinking. This study aimed to investigate the association between job stress and problematic drinking in Korean employees. Methods : The study participants were 72,119 employees who attended health screenings and responded to the Alcohol Use Disorder Identification Test-Korea (AUDIT-K), Korean Occupational Stress Scale-Short Form (KOSS-SF), Center for Epidemiologic Study-Depression (CES-D), Beck Anxiety Inventory (BAI) and questionnaire on suicidal ideation and sociodemographic characteristics. We investigated the sociodemographic and clinical characteristics of the problematic drinking group ($AUIDT-K{\geq}12$) and used binary logistic regression to determine the impact of job stress on problematic drinking. Results : Age, gender, marital status, education year, sleep duration, obesity, smoking, suicidal ideation, and depression and anxiety showed significant differences between the problematic drinking group and normal group. Among the various kinds of job stresses, job insecurity and lack of reward were associated with problematic drinking. Conclusion : The result of this study suggested that certain kinds of job stress might be associated with problematic drinking in Korean employees.

• Journal of Digital Convergence
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• v.8 no.4
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• pp.1-17
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• 2010

Many organizations have had deep interests in studies concerning leadership and also in academic area, not only management but also psychology. Until now, the leadership has been accentuated to managers or team leaders especially. Recently, however, the concept of self-leadership that lead one's own activities toward right direction through self-control or self-management is being focused on practices and academia. This study is to investigate the influence between self-leadership strategies and learning performance at IT classes mediated by attitude of attendance focused on the social science students in an university. Research results can give us right direction of task-taking attitudes in firms or learning attitudes in teaching organization and implications to human resource manager who are in charge of improving learning performance or productivity.

• Journal of Digital Convergence
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• v.15 no.4
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• pp.377-386
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• 2017

This study was conducted to determine the relationship between the job stress levels of 669 subway operators in Seoul after the installation of screen doors and their mental health. Data were collected using a structured questionnaire and via web site. A multiple linear regression analysis was conducted using the SPSS 20.0 statistical program. The total score of job stress turned to be higher than the standard score, and physical environment, job demand, insufficient job autonomy, interpersonal conflict and occupational climate were within the top 50% and organizational system within the top 25%. A correlation analysis revealed that job stress was positively correlated with all sub-domains of mental health. In terms of effects of job stress on mental health, there were significant differences according to job demand, organizational system, lack of reward and occupational climate, with an explanatory power of 36.6%. It is expected that this study can provide foundation for the establishment of organizational measures accustomed to job characteristics to prevent job stress of subway operators and the development and implementation of intervention programs for mental health promotion.

• Korean journal of communication and information
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• v.36
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• pp.231-253
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• 2006

Based on the development of IT(information technology), the explosive diffusion and growth of the new media and services in Korea has attracted keen international attention. The construction of IT infrastructure driven by the proactive social informatization policy of the government has also been spectacular. Korea has persistently pursued strong 'new media-informatization policy' with three main objectives in mind: 1)Industrial-economic value creation; 2)socio-cultural value creation; and 3)building of the knowledge society-knowledge state. But its consequence is rather paradoxical. While its performance is excellent in terms of quantity growth of industry and technology, quality development of society, culture and knowledge creation is lagging far behind. This paradoxical outcome originates, not from any simple policy error, but from a structural problem inherent in new media-informatization policy in Korea which has long been captured by developmentalism. In order for Korea to harvest the reward of strong new media-informatization infrastructure, it needs to institute a policy structure based on a knowledge IT strategy such as research and development of core and patent technologies, design and production of quality contents, networking knowledge bases of society, etc.

• Korean journal of communication and information
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• v.36
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• pp.287-323
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• 2006

This study attempted to find out that organizational culture and organizational support are the main factors of an effect on team, a kind of making unit of broadcasting programming, commitment. And especially this research tried out that each organizational culture type had an effect differently on team commitment using of Linear Structural Equation Modeling(LISREL). In order to empirically test to the research model, data were collected by 280 terrestrial Broadcasting PD in Seoul. Result showed that each organizational culture has a differential influence on the path and effect of organizational support and team commitment. The educational system and production back up of the Organizational support system have not enough to support and promote the team commitment except reward system. As a consequence, Broadcasting organization make a strategy considering of dominant organizational culture type.