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길현영(Hyun-Young Kil) 한국컴퓨터정보학회 2019 韓國컴퓨터情報學會論文誌 Vol.24 No.9
The service composition based on Service-Oriented Architecture(SOA) can make us view various machines or its functionalities in the Web or Internet-of-Things environment as "service", and efficiently create new value-added services that users want by compositing different services if there is no service to satisfy the client. The service composition problem with respect to behavioral descriptions deals with the automatic synthesis of a coordinator service that controls a set of services to reach a goal state. Despite its importance, however, solving the service composition problem with only partial observations remains to be doubly exponential in the number of variables in service descriptions, rendering any attempts to compute an exact solution for modest size impractical. Toward this challenge, in this paper, we propose novel approximation-based approaches using abstraction methods. We empirically validate that our proposals can solve realistic problems efficiently.
길현영(Hyun-Young Kil) 한국컴퓨터정보학회 2019 韓國컴퓨터情報學會論文誌 Vol.24 No.9
With the advent of the Fourth Industrial Revolution, software(SW) education has become a necessity, not a choice of those who live in the digital age. Recently, many countries around the world have been actively promoting software education based on Computational Thinking(CT) for K-12 students, so software education in schools has bigger meaning as basic literacy education of future digital generation rather than coding skills. However, the integration of software education as a formal curriculum in schools is still ongoing in even other countries. Korea is also pursuing software education, but it is in the beginning stage. Therefore, we need to study the cases of other countries that have already started software education at the national level. In this paper, we first investigate the software education cases of three countries, e.g., UK, France and China with a respect of background & educational objective, development stage, and curriculum and we suggest education policies that software education can settle in Korea schools to foster a creative talented people.
외래관광객이 관광기념품으로 구매한 의류상품의 속성에 관한 연구
서철현,조지현,이호길,안현영,송은주 관광경영학회 2002 관광경영연구 Vol.16 No.-
Based on documentary research and practical research, this study tries to figure out pragmatically first what characteristics the foreign tourists consider important when they buy clothing merchandise as tour souvenirs, and second, what characteristics the foreign tourists satisfy in the process of performance after purchasing. More specifically, this study applies importance-performance analysis as a management technique for the maximization of the satisfaction of users. As a result of analysis, the characteristics of design, price, fitness, utility, color, and style are located in the first quadrant; convenience of cleaning and handling, kindness of salesperson, functionality are in the second quadrant; durability, convenience and varied ways of payment, after service are in the third quadrant. However, there were no characteristics in the fourth quadrant that is orientated to intensity of hard work. Thus, we conclude that the foreign tourists visiting our country are in general satisfied with their purchasing of clothing merchandise.