• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.9 no.6
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• pp.141-154
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• 2009

Digital Ecosystem is a new word for dynamic IT business environments. Digital Ecosystem can consist of various enterprise federations such as competing, collaborating and stable or unstable ones. They make it difficult to implement identity management for the environment. Existing solutions are either too restricting and inflexible to support the dynamic nature of ecosystems since they are too complex and difficult to adopt. This paper is to propose an distributed identity management model for automated processing of identity information between ecosystems. It is featured with being practical, clear and easy to deploy. And it is based on the new OASIS SAML3.0 standard to provide interoperability between existing identity technologies. This paper presents the basic and extended identity model for single service and multiple services. The model presented in this paper can be applied to enterprise context easily.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.10 no.1
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• pp.175-185
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• 2015

This article focuses on an analysis of entrepreneurship education programs at U.S. college and universities in order to determine distinctive features of those programs. To this end, we delved into the entrepreneurship programs including Martin Trust Center for MIT, Harvard University VIP program, Polsky Center of Chicago University and Stanford University program. By analyzing major roles, curriculums, and characteristics of the programs, three types of distinctive features emerged. The first feature is dynamic education-focused programs, which provide students with opportunities for applying what they have learned through startup competitions. The second is local-based programs, which take the lead in local startups by focusing on the local industry. The third is the programs with support and encouragement for startups. Based on the three types of features, we suggested critical factors for successful entrepreneurship education.

• The Journal of Society for e-Business Studies
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• v.25 no.2
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• pp.109-126
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• 2020

This study attempts to find out the characteristics of digital currency and currency transformation through the analytical descriptions of the literature. In the early days of the emergence of new currency, market-oriented autonomous monetary adjustment was made along with various attempts by the private sector, and then government-centered central currency management and coordination were made for the national monopoly of profits and power. Digital currency can be seen as the emergence of a new form of money that will bring about paradigm changes. CBDC can be divided into direct and indirect types. CBDC is expected to require a strategic approach by the government or firm as it will bring about changes in the ecosystem of related industries. Libra is a stablecoin designed to minimize price fluctuations, and if it succeeds in commercializing it, it is expected to bring about revolutionary changes in the financial industry around the world.

• Journal of Internet Computing and Services
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• v.15 no.1
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• pp.113-123
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• 2014

Many people expect remarkable growth in Cloud Computing industry because of it's effectiveness. But Cloud Computing industry is still at an early stage. Especially, people who in the public sector hesitate to adopt Cloud Computing Services due to security issues and their conservative views. Also, they just have limited understanding, so we need to investigate what they really know and understand. The purpose of this study is to propose Improvement plans on cloud-based smart work service of a quasi-governmental agency based on the view point of preference and tendency. To discover three types of cloud-based smart work issues and interpret theoretical definitions of those, we conducted a subjectivity analysis through qualitative methodology. At the result, the study draws three elements of typology: convenience type, concentration type, and collaboration type, and provides directions to strategic-policy studies for future cloud-based smart work services of quasi-governmental agency.

• Journal of the Korea Convergence Society
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• v.9 no.10
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• pp.415-421
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• 2018

The purpose of this study is to analyze the difference of scalp and hair care behaviors according to DiSC behaviors of beauty consumer. For the study, 251 questionnaires were analyzed using the SPSS v.18.0 statistical package program. First, there was statistically significant difference in psychological stability, favorable image, and maintaining state of scalp and hair management according to DiSC behavior type. In case of Shin Jung - hyung (C), psychological stability, Positive images, and maintaining good condition. Second, DiSC and hair management behaviors according to DiSC behaviors showed statistically significant difference in state cognition management and product use management. In the case of cognition type (C) and social type (I) Product use management. The results of this study suggest that hair management awareness and behavior, which is dependent on DiSC behaviors of consumers, are provided as basic data for corporate marketing strategy.

• Journal of IKEEE
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• v.19 no.1
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• pp.101-109
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• 2015

As the number of smartphone users grows, number of applications and the expected overall functionality in a smartphone grow simultaneously. With ever-so increasing expectations comes intense competition to squeeze in myriads of functions in a limited space that is only getting 'slimmer' by the year. In order to achieve this, companies often decrease the size of components in smartphones - battery connectors in particular. While they may fit, smaller battery connectors have their disadvantages due to the heat generated by the high current flow in the circuits. In collaborating with Korea's leading battery connector manufacturers, this research presents current issues and design concepts that should be considered when engineers design power connectors based on their electrical and thermal analysis.

• Journal of the Korea Society of Computer and Information
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• v.13 no.6
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• pp.279-286
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• 2008

The IT industry plays the engine role in Korean economy which reaches up to 17% of Korean GDP. However the current global economic depression which stems mainly from the US has caused insufficient demand in IT industry. The decreased demand leads to a drug in the market, to fierce price competitions and increasing fear on the world IT market depression. Considering the facts, there are strong demands for the diversification of the products of exports and the countries Korea exports to. These need differentiated strategies which can be summarized in various IT package-type overseas expansion model including the consideration in strategic items, countries, connecting large and small-medium size companies or businesses and related industries. The importance of IT industry in Korean economy will grow constantly and the IT package-type overseas expansion models will preside the movements.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.25 no.3
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• pp.493-500
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• 2015

Personal information exposed in the Internet is increasing by the public data opening and sharing, vitalization of SNS(Social Network Service) and growth of information shared between users. Exposed personal information in the Internet can infringe upon targeted users using linkage attack or background attack. To prevent these attack De-identification models were appeared a few years ago. The 'k-anonymity' has been introduced in the first place, and the '${\ell}$-diversity' and 't-closeness' have been followed up as solutions, and diverse algorithms have been being suggested for performance improvement nowadays. However, industry or public sectors actually needs a whole solution as a system for the de-identification process rather than performance of the de-identification algorithm. This paper explains a way of de-identification techique for 'k-anonymity', '${\ell}$-diversity', and 't-closeness' algorithm using QI(Quasi-Identifier) grouping method in the relational database.

• Journal of Digital Convergence
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• v.13 no.9
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• pp.1-9
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• 2015

The Japanese government has carried out the power industry reform in three phases to supply power stably, control the rise of electricity tariff, and expand consumer choices. The reform of the Japanese electric power industry fosters new kinds of businesses as well as changes the competitive structure in which the enterprises participating electricity business compete. However, for the power industry restructuring to be done smoothly, the accompanying tasks should be carried out. Korea has also been devoting a lot of efforts to cultivate various types of new industries based on the convergence of energy and information and communications technology. If there are the same kinds of new industries between the two countries, the progresses of the industries can be compared to each other over a period of time.

• Journal of the Korea Society for Simulation
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• v.21 no.3
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• pp.25-33
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• 2012

Ptak & Smith published ORLICKY'S Material Requirement Planning Third Edition in 2011 to correspond the rapidly changed market demand by improving the original MRP based on Theory of Constraints(TOC) replenishment inventory management. This study is to develop the simulation model to decide the proper target inventory level for TOC replenishment inventory management using system dynamics Vensim software. This study shows that the proper target replenishment level is how much significant to manage the inventory by the random sample data simulation. This simulation model will be extended to compare the results of the TOC replenishment inventory management planning with the results of the old MRP planning by the enterprise actual inventory data.