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실물옵션이론을 이용한 전파자원 회수 및 재배치 정책 모형화에 관한 연구

  • Jeon, Il-Hwan;Lee, Jeong-Dong;Jeong, Jong-Uk
    • Proceedings of the Technology Innovation Conference
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    • 2005.02a
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    • pp.124-139
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    • 2005
  • In the early stage, the radio communication industry was widely accepted as a monopoly industry, so it has been controled and managed by government. But the advanced technology in Information and Technology industry has led constant increase of demand and dramatic change of communication market. Furthermore it is expected that frequency resource is to be short by market change due to wire-wireless integration. That is why the effort to utilize and manage limited frequency resource efficiently is being executed around the world. Not only newly developing and allocating the spectrum but also reallocating the existing spectrum important are, since transforming inefficiently used existing spectrum to new service can increase producer's surplus and social welfare. The economic approach to valuate the spectrum and spectrum usage right is necessary different from the traditional cost based approach, and through this approach I expect active transaction of spectrum. In this paper the real option methodology is used for valuation of spectrum, considering spectrum user's option right based on future revenue. In detail, the matter of withdrawing and reallocating the existing analog radio broadcasting spectrum is evaluated in this paper, The digitalization of a broadcasting service is widely spreaded around the world in terms of technology and service utility, and analog TV broadcasting has already been decided to be transformed to digital TV broadcasting. It was planned to convert analog radio broadcasting to DAB service before adopting DMB service, but nowadays this issue is not on the table anymore. However if the increasing demand of digital voice and broadcasting service is considered, this kind of research to valuate a spectrum is needed urgently. The result of this research shows that when the redeployment of spectrum is done, social welfare will increases. The point of the reallocation time and value are suggested by the monte carlo simulation through ROVM. In this paper, I use real option to valuate the spectrum and provide the point of the reallocation time and reasonable guideline, and moreover, the suitable information of this paper is expected to reduce risk and loss in policy practice.

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Intrusion Detection System for Home Windows based Computers

  • Zuzcak, Matej;Sochor, Tomas;Zenka, Milan
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.13 no.9
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    • pp.4706-4726
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    • 2019
  • The paper is devoted to the detailed description of the distributed system for gathering data from Windows-based workstations and servers. The research presented in the beginning demonstrates that neither a solution for gathering data on attacks against Windows based PCs is available at present nor other security tools and supplementary programs can be combined in order to achieve the required attack data gathering from Windows computers. The design of the newly proposed system named Colander is presented, too. It is based on a client-server architecture while taking much inspiration from previous attempts for designing systems with similar purpose, as well as from IDS systems like Snort. Colander emphasizes its ease of use and minimum demand for system resources. Although the resource usage is usually low, it still requires further optimization, as is noted in the performance testing. Colander's ability to detect threats has been tested by real malware, and it has undergone a pilot field application. Future prospects and development are also proposed.

Implementation of a Regression Analysis System for the Control of Supplying Halibuts (넙치 공급량 조절을 위한 회귀분석 시스템 구현)

  • Ahn, Jinhyun;Kang, Jungwoon;Kim, Mincheol;Park, So-Young
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.26 no.2
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    • pp.321-324
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    • 2022
  • The Korean halibut farming industry suffer from price instability and demand decrease due to various environmental and social issues. It is urgent to predict the appropriate amount of halibut production. However, it is not easy for employments working in the halibut farming industry to handle statistical tools in order to perform the prediction. In this paper, we implemented a Excel-based regression analysis tool that allows users to get a regression analysis result by just entering historical data in a sheet. Our tool will reduce workloads of employments working in the halibut farming industry by enabling them to perform a regression analysis with Excel on-the-fly. This study expect that by using the tool the halibut farming industry cope actively with the real-time change in the industry.

Feasibility Survey on the Introduction of Forest Land Bank System focusing on Forest Owners, Non-forest Owners, and People Who Return to the Farm (산주와 비산주 및 귀농·귀촌인을 대상으로 한 산지은행제도 도입 타당성 설문조사)

  • Kim, Jong Ho;Kim, Won Kyung;Kwon, Soon-Duk
    • Journal of Korean Society of Forest Science
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    • v.103 no.2
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    • pp.278-286
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    • 2014
  • Forestry management problems in South Korea have been caused by small and scattered forest lands, aging forest owners, and the increase of absentee forest owners. To solve these problems, it is a time to consider the introduction of forest land bank system for the expansion of forestry management scale, the effective management of neglected forest lands, and the stable livelihood support for aged forest owners. Therefore, this research implemented the questionnaire survey of necessity, expectation, willingness to use, and introduction plans for the forest land bank system in order to examine the feasibility and demand of the system focused on forest owners, non-forest owners, and people who return to the farm. The questionnaire survey was conducted for 262 of resident forest owners, 152 of absentee forest owners, 427 of non-forest owners, and 101 of people who return to the farm. 77.5% of forest owners and 63.8% of non-forest owners agreed with the necessity of the introduction for the forest land bank system. Both forest owners and non-forest owners would prefer to use forest land reverse mortgage and leasing among projects of the forest land bank. In addition, 75% of people who return to the farm also expected that forest land bank would be helpful to their rural and mountain life, and they would have higher preference to participate in leasing and buying forest lands than other projects. Based on the outputs of the feasibility and demand survey in this research, this study can play a key role in determining basic direction, major functions, types and range of projects as well as providing information for establishing policies of the forest land bank system.

Comparative Study on the Users' Awareness and Choice Patterns on the Healthcare Environment Color Index, Focused on Koreans and Romanians

  • Ardelean, Ioana;Oh, Jiyoung;Park, Heykyung
    • International Journal of Advanced Culture Technology
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    • v.8 no.3
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    • pp.123-132
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    • 2020
  • In contemporary times, there is an increasing demand for a dedicated healthcare environment, all over the world. The main motivation for this demand is the level of awareness manifested by the users and reflected on their expectations. Therefore new research strategies and design actions are investigated in order to answer to the users' needs and to provide objective design tools for the specialist. This study continues a series of previous developments of the Healthcare Environment Color Index that should be used for public facilities in Korea and abroad. The cross-cultural approach is a new opportunity for exchanging know-how and for testing and calibrating the perception of the users on the color index. The gathering of results was made based on the online survey provided in this phase in English version for the Romanian users. The survey was intended as an objective mean of research and an efficient way of disseminating information on the subject thus contributing to increasing the level of awareness of the users. A total of 86 Romanian and 89 Koreans with valid answers took part in the survey. Comparative visualizations of the results showed significant similarities concerning the patterns of color preferences but also cultural and emotional differences. As a result both categories of users proved to be aware of the relation between healthcare environment color and its effects on health. They also showed a common understanding on the potential of the color index. As a result the most appealing colors to be applied to the healthcare environment were the series G and B, and the most effective ones were proved to be the ranges of high lightness and low saturation but also the medium high lightness and medium saturation. Both the similarities and the differences of choice between Romanians and Koreans show that cultural and emotional differences of color recognition are important and that should be taken into consideration in design, in order to generate an inclusive and efficient healthcare environment.

Verification and Validation of Web Applications (웹어플리케이션의 검증과 확인)

  • 권영직;나용화
    • Journal of Korea Society of Industrial Information Systems
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    • v.7 no.5
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    • pp.73-82
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    • 2002
  • The economic relevance of Web applications increases the importance of controlling and improving their quality. Moreover the new available technologies for the development allow the insertion of sophisticated functions, but often leave the developers responsible for the organization and evolution. As a consequence, a high demand is emerging for methodologies and tools for quality assurance of Web based systems. In this paper, a UML model of Web applications is introduced for their high level representation and concept of the verification and validation activities. In this paper proposed analysis algorithm that was based on Domestic Website and presented result through experiments.

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Distributed control algorithm for survivable DCS mesh networks (DCS를 이용한 통신망의 장애 복구 알고리즘)

  • 주운기
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 1997.10a
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    • pp.245-248
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    • 1997
  • As the increasing the demand on information service, high-capacity and high-speed telecommunication networks are required. For the networks, very intelligent telecommunication equipments such as DCS(Digital Cross-connect System) will be employed for the fast service on the various types of information including voice, data and image. This paper considers the transmission networks composed of DCSs and optical fibers as nodes and links of the networks, respectively. For the networks, some types of restoration algorithms are compared their characteristics for their potential applications. And a distributed control algorithm is described as an empirical example which is implemented on the BDCS(Broadband Digital Cross-connect System), where the BDCS is a type of DCS developed in Korea. Finally, some remarks on the associated further researches are added.

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A Study on the Development of Human Resources for International Competition Power to Software Industry in Korea (한국 소프트웨어 산업의 수출 경쟁력 제고를 위한 인력양성 방안에 관한 연구)

  • Lee, Ho-Gun;Kim, Hee-Jun
    • International Commerce and Information Review
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    • v.4 no.2
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    • pp.233-252
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    • 2002
  • This thesis is designed to draw up scheme for human resources development of the Korean software industry. Its concrete scheme is as follows. That is, IT professionals with international competitiveness should be cultivated, and a human resource development system, which can flexibly meet the market demands, has to be built. Pool of specialized programmers is necessary condition for achieving competitiveness in Korean software industry. Reeducation is also desirable to embody the agile productive capability into the existing human resources for new challenges in the industry. Well-organized human resources database will also make it easy to match new demand and to lower the transaction cost in switching jobs. To cope with the rapidly changing environment actively, human resource development and training system improvement through the cooperation with the concerned industries, universities, research centers and the government must be settled immediately.

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Study on Oil Hub Development Strategy of Korea in Northeast Asia by Benchmarking Singapore of Oil Logistics Hub (싱가포르 석유물류허브 벤치마킹을 통한 우리나라의 동북아 오일허브 발전 연구)

  • Lee, Choong-Bae;Kim, Jeong-Whan;Park, Sun-Young
    • International Commerce and Information Review
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    • v.11 no.2
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    • pp.127-145
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    • 2009
  • With increase in oil demand owing to economic growth in Northeast Asia, the establishment of an oil hub in Korea is recently considered by policy and academic circles. This paper aims to suggest strategic schemes on the establishment of Korea's oil hub in Northeast Asia by comparing Korea's conditions as an oil logistics hub with Singapore which has been an oil hub in East Asia until recent year. Quantitative and qualitative analysis methods were employed in order to examine the competitiveness of Korea's oil hub. This research concludes that Korea is very competitive as an oil logistics hub in Northeast Asia, but so much improvements for realizing the project are necessary such as expansion of storage facilities for oil, institutional instruments for facilitating oil logistics and trading and preparation for incentive schemes on foreign investments in oil and its related industries.

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An Application of GIS Technique to Analyze the Location of Fastfood Stores : The Case of Kangnam-Gu , Seoul (GIS 기법을 활용한 패스트푸드점의 입지분석에 관한 연구 - 서울시 강남구를 중심으로)

  • 이희연;이정미
    • Spatial Information Research
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    • v.4 no.2
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    • pp.131-146
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    • 1996
  • The purpose of this study is to extract the main locational factors to affect the location of fastfood stores in Kangnam -Gu, Seoul by using Geographic Information Systems. The Franchise system, which came to be employed in full scale since 1990, now enjoying the booming period, especially fast food industry. The procedure of this research has four steps. First, the spatial distribution of fastfood chain stores in Seoul is analyzed by the land use and road map. Second, the spatial variations of fastfood stores in dong districts of Seoul is explained by multiple regression analysis. Third, the main locational factors to affect the location of fast food stores in Kangnam -Gu are extracted by demand and supply sides using GIS technologies. Finally, the potentiallocational zones where are selected by extracted locational factors are compared with the actual distribution of f astf ood stores in Kangnam - Gu. In terms of demand side, the main locational factors include commercial and service facilities, sub¬ways and bus stops which have a lot of pedestrians, and large apartment districts that have high popu¬lation densities. In terms of supply sides, the main locational factors include land use types and land value, accessibility. After fast food chain stores of Kangnam -Gu are overlaid final potentiallocational zones extracted by demand and supply sides of locational factors, it can be identified that over 80 % of fastfood stores are located in the potentiallocational zone. In conclusion, this study shows that spatial analysis functions may potentially be improved using GIS technologies. However there are still difficulties for the locational analysis for service industries to col¬lect appropriate data in terms of computerized base maps as well as consumer behavior and store characteristics itself.

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