• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 1994.10a
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• pp.49-58
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• 1994

The methods of estimation of VTS effectivenss are compared and the worldwide literature related to the VTS effectiveness is reviewed. The review suggests three potential approaches ; simulation ; synthesis of expert opinion and statistical analysis of casualties. this study adopted dissimilar approaches to estimate the VTS effectiveness to the earlier studies ; the combination of synthesis of expert opinion and causal analysis of casualty. The VTS effectiveness is derived by multiplying casualty rate reduction factors by the effect level of causal factors. The development of casualty rate reduction factors was based on the questionnaire survey and the evolution of effect levels was based on the causal analysis using functional block diagram. According to these procedures the maximum benefit to be obtained through the introduction of a VTS system was approximately 46 percent overall. The collision reduction rate was estimated to be approximately 50 percent for a VTS system with advanced radar surveillance. And 47 percent of groundings 36 percent of rammings and 21 percent of founderings could be reduced by the introduction of VTS. These figures are more or less the same to the earlier studies. The VTS effectiveness by the different causal factor groups was examined. VTS may reduce about 68 percent of causal factors classified as environmental conditions 40 percent of human factors and 35 percent of technical factors in collision accidents. As a whole 60 percent of environmental factors 41 percent of human factors and 20 percent of technical factors may be prevented by a VTS. The key variable of the effectiveness percentage is the value of weight coefficient $\delta$. Therefore differing values for this input was discussed and the impact that these variations have on the VS effectiveness noted. As the results of sensitivity analysis of VTS effectiveness by $\pm$10 percent the effectiveness is varied approximately three to seven percent by casualty type. And the value is changed roughly four to eight percent by a $\pm$10 percent variation by different sub-areas.

• Journal of the Korea Society for Simulation
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• v.26 no.2
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• pp.31-39
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• 2017

This paper analyses the effectiveness of Kill Chain (KC) and Korea Air and Missile Defense (KAMD), also known as the K2 systems, using monte carlo simulation. It is assumed that the K2 systems are consisted with unitary KC and multi-layered (upper-tier and lower-tier) KAMD. And each system has two or three arbitrary weapon systems and its combination makes 12 scenarios. Measures of effectiveness (MOE) of the K2 systems were defined as ratio of eliminated ballistic missiles from total threats. And total cost was calculated by number of weapon launched and its unit cost. MOE and total cost of the K2 systems were estimated using monte carlo simulation with a thousand iteration for each scenario. Cost-effectiveness analysis was performed and the best candidate was selected using fixed effectiveness approach. As a result, the performances of KC are prime factor that affects both effectiveness and total cost of the K2 systems. It is also, acquired proper level of lower-tier KAMD to achieve desired defense effectiveness. For future work, it needs to be performed cost-effectiveness analysis based on practical specification and life cycle cost of weapon systems.

• Journal of Korea Society of Digital Industry and Information Management
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• v.13 no.3
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• pp.115-132
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• 2017

There is no absolute leadership through East and West. Just as past and present conditions are not the same, it is not easy for past leadership to apply to the present. The best leadership will be the leadership that can represent and lead the changing situation. In that sense, the creative leadership is the most appropriate leadership required by the present age. In the society, research on creative leadership is actively conducted in schools and companies, but there is no research on creative leadership in the military. This is the first study in the military about creative leadership. It is meaningful to understand the understanding of creative leadership and the applicability of the military and to provide a basis for future research. First, we measured the organizational effectiveness of creative leadership. The data were analyzed by factor analysis, correlation analysis, and regression analysis using SPSS 18.0. The results of this study were as follows. First, the organizational effectiveness of creative leadership and organizational goals and achievement were measured, and it was found that there was significant influence on the relationship between creative leadership and organizational effectiveness. I could confirm some. This would be meaningful in that it suggested the possibility of applying the leadership of the creative leadership to lead the change of society and to implement the military command.

• Journal of Internet Computing and Services
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• v.19 no.2
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• pp.57-67
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• 2018

The $4^{th}$ industrial revolution has brought innovation in the educational environment. The purpose of this study is to verify the educational effectiveness of smart learning environment especially with the computational thinking. A big data analysis was performed to confirm that computational thinking is the one to prepare the 4th industrial revolution. To teach computational thinking at university, educational design should be careful. This study verified the relationship between improvement of computational thinking ability and major of students with coding education. There was difference in effectiveness of the coding education depending on the major of students, it means students must be guaranteed to be educated by the differentiated coding education for different major. This study extracted factors of computational thinking through literature review. Thirteen research hypotheses were applied for the statistical analysis in R language. It was proved that expectation of class and improvement of abstraction ability and algorithmic thinking ability had mediation effect to the relationship between knowledge acquisition and problem-solving abilities. Based on this study, effectiveness of education can be improved, and it will lead to produce a lot of distinguished students who are ready for the 4th industrial revolution.

• Journal of Applied Reliability
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• v.17 no.2
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• pp.168-180
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• 2017

Purpose: In this research, we develop an effectiveness analysis simulation model using Agent Based Modeling with Communication Effects for the development of a new weapon system. Methods: To describe the future battlefield that has more complexity, we develop Agent Based Modeling to describe communication Effects. We use the communication theory (Path-Loss Model) and the real map. Results: We have compared simulation model with real map and simulation model without real map. The Blue Survival Ratio of simulation model with real map is worse than one without real map since the performance of communication gets lower. Conclusion: There are many studies about the effectiveness analysis of a weapon system. Most of previous researches assumed no communication error. In the real world, however, it's not appropriate assumption. Therefore, this study considers the communication error and shows that it is important factor in the effectiveness analysis.

• Land and Housing Review
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• v.2 no.4
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• pp.315-324
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• 2011

In the merged organization, the efforts of integration such as various PMI activities, etc. are exerted and the performance of PMI can be judged by evaluating the effectiveness of an organization. In this paper, the empirical analysis was conducted to see what effects of 'planned PMI activities' and 'voluntary integration efforts' have on the effectiveness of an organization which is 'Organizational Commitment', 'Job Satisfaction', 'Emotional Integration' and 'Shared Value Recognition'. The survey was made on the employees of LH, which is a representative case of public corporation advancement, and SPSS 17.0 and AMOS 17 were used for the analysis. As a result of the analysis of a structural equation model, it indicated that both 'planned PMI activities' and 'voluntary integration efforts' have direct influence on 4 indices of effectiveness of an organization respectively. In particular, it was found that 'planned PMI activities' affects 'Shared Value Recognition' the most and 'voluntary integration efforts' has the largest effect on 'Emotional Integration'. Through this study, it was verified that voluntary integration efforts of members as well as the planed formal PMI activities are also very important factor of effect on the integration performance of an organization.

• Journal of Fashion Business
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• v.21 no.6
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• pp.106-121
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• 2017

This study was to identify underlying dimensions of service encounter quality, to test difference in service encounter quality between interpersonal service(IPS) and self-service technology(SST) and to predict service effectiveness and behavioral intentions in the fashion retail context. A field experimental study was designed for collecting data. Repeat sampling frames were involved in two types of service encounters: interpersonal service and self-service technology within the store environment. Thirty participants served as subjects. Sample represents more females than males, and age was ranged from 20 to 33 years old (Mean=24.2). The result suggested that service encounter quality consisted of competence, dedication, and listening. There was a significant mean difference on listening factor of service encounter quality between IPS and SST. For the interpersonal service, dedication and listening had significant effects on service effectiveness. For the self-service technology, competence and listening had significant effects on service effectiveness. In the IPS condition, the service effectiveness significantly affected the revisit intention, whereas it was not significantly related to the revisit intention in the SST condition. This study discussed managerial implications for fashion retailers seeking to effectively manage service quality by specifying interpersonal service versus self-service technology in the retail environments.

• Proceedings of the KIPE Conference
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• 2000.07a
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• pp.489-492
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• 2000

A novel low-cost simple and unity-power-factor electronic ballast is presented. The proposed electronic ballast employs a bypassing capacitor and load networks composed of ballast capacitors and small charge pump capacitors as power factor correction circuit combined with the secondary winding of the transformer in the self-excited current-fed push-pull resonant inverter(CF-PPRI) resulting in cost-effectiveness and higher efficiency. By analyzing the principles of power factor correction mathematically optimum design guidelines are presented. Since the lamps are used in power factor correction stage the input power is automatically adjusted according to the number of the lamps.

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.490-491
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• 2008

A photovoltaic power generation system is one of the ideal clean energy sources increasingly replacing fossil fuel, which has many environmental problems such as exhausted gas or air pollution. As a photovoltaic generation system should meet the requirement to be connected to utility, power factor is an important factor for the high quality of power. This paper implements a power factor controller to improve the power quality of utility interactive photovoltaic system. To verify the effectiveness of the implemented power factor controller, the results by Electromagnetic Transients Program (EMTP) are presented.

• Culinary science and hospitality research
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• v.5 no.1
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• pp.207-224
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• 1999

One of the most important issues faced by manager of food industry is the lack of management development program. This study on the management development program was to take a look at the training problem for the food industry of Korea through secondary data or literature, and with conceptual framework designed based on the literature review, examined what is effective management development program for manager in food industry. The purposes of this study are : (1) Identifying the factor to management development program. (2) Provision of a executive management development program. The conclusion and suggestion obtained from this study can be summarized as followed. First, it has shown that there is big difference between the present training level and future training need level on three training contents. Second, there were differences in three training contents especially according to operation type and organization size. Third, job satisfaction factor, training satisfaction factor, training aid factor, training effectiveness factor has correlated each other. From this study, we could get several strategies and programs for management development.