• Journal of Information Technology Applications and Management
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• v.19 no.2
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• pp.59-78
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• 2012

The purpose of this longitudinal case study is to shed light on the reliability problems of IS performance evaluation by analyzing the discrepancy between ex ante evaluation in 2011 and ex post evaluation in 2012. Through an information system development project of a public enterprise, the gap between ex ante and ex post evaluation was ascertained and the causes as to why such gap occurs and the success factors that can solve the problems were derived. The ex ante evaluation of IS performance was performed based on both IS success model and BSC model and the ex post evaluation was carried out at the time after the target system has been built up by applying the evaluation measures and process that are similar to the ex ante evaluation. In the ex ante evaluation the business performance improved by the target system was estimated to 18.2%. On the other hand, it was seen as being low at 15.2% in the ex post evaluation and the differences were found to be statistically significant in 6 out of 10 measures. The reasons as to why such gap occurs were diagnosed as being of 2 types : (1) changes in the evaluation psychology according to the differences in the evaluation objectives; and (2) excessive expectation levels of the target system that is formed at the time of the ex ante evaluation. In other words, the users who have excessive expectations tend to overestimate in the ex ante evaluation and, in the ex post evaluation, tend to underestimate lower than the actual performance mainly due to disappointment on the results that do not meet the early expectations. As solutions to overcome the reliability problem of ex ante evaluation, 3 factors were derived : (1) the temperance of excessive expectation levels of the users; (2) a clear definition of the scope and functionality of the target system; and (3) actual commitments for the evaluations of IT performance.

• Korean Journal of Construction Engineering and Management
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• v.4 no.2 s.14
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• pp.82-90
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• 2003

An enterprise has evolved to meet social changes and customers' requirements. The construction industry has also evolved according to the changes and requirements, therefore it comes to manage the relationships with customers. However, the customer management in the construction industry has not been quite genuine, since it has been mainly oriented for public relations and advertisements of companies. The genuine customer management should not only systemize customer data but also provide strategy to utilize it through managing relationships with customers as well as customers themselves. In order to apply customer relationship management (CRM), which is a more aggressive and structured business strategy, this paper tries to redefine customers in the construction industry; identifies differences from the existing CRM business strategy; and suggests a desired CRM business strategy and it roles in the construction industry.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.26 no.1
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• pp.153-168
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• 2016

This paper introduces a structure, features and programming techniques for the CNG(Cryptography API: Next Generation), which is the substitution of the CAPI(Cryptography API) from Microsoft. The CNG allows to optimize a scope of functions and features because it is comprised of independent modules based on plug-in structure. Therefore, the CNG is competitive on development costs and agility to extend. In addition, the CNG supports various functions for the newest cryptographic algorithm, audit, kernel-mode programming with agility and possible to contribute for core cryptography services in a new environment. Therefore, based on these advantageous functions, we analyze the structure of CNG to extend it for the enterprise and the public office. In addition, we implement an error-detection tool for program which utilizes CNG library.

• The Journal of the Korea Contents Association
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• v.10 no.7
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• pp.326-336
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• 2010

The purpose of this research is to analysis of difference about university curriculum of secretary from ethnographic research. The research participant 4 years is the university graduate. The participant who is selected is the practical career person of 3 or more years that Works at the Seoul individual enterprise. The specialist verified continuously about research truth and ethical from collection of data and analytical process. The research method and analysis results are as follows : First, Martial art and sports relation subject is more protocol secretary and secretary subject. But emphasized an importance about protocol secretary and secretary subject. Second, The male emphasized that Specialist training and segmentation in major field of study. The woman emphasized that women's studies and protocol secretary, culture of high-level class. Third, They have emphasized difference about private security in professionalism of curriculum.

• Journal of Preventive Medicine and Public Health
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• v.39 no.5
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• pp.438-446
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• 2006

Objectives: We developed the predictive model for the incidence of colon cancer by utilizing the health screening data of the National Health Insurance in Korea. We also explored the characteristics of the high risk group for colon cancer. Methods: The predictive model was used to determine those people who have a high risk for colon cancer within 2 years of their NHI health screening, and we excluded the people who had already been treated for cancer or who were cancer patient. The study population is the insured of the NHI, aged 40 or over and they had undergone health screening from the year 2000 to 2004, according to NHI health screening formula. We performed logistic regression analysis and used SAS Enterprise Miner 4.1. Results: This study shows that there exists a higher rate of colon cancer in males than females. Also, for the population in their 60s, the incidence rate of colon cancer is much higher by 5.36 times than that for those people in their 40s. Amongst the behavioral factors, heavy drinking is the most important determinant of the colon cancer incidence (7.39 times in males and 21.51 times in females). Conclusions: Our study confirms that the major influencing factors for the incidence of colon cancer are drinking, lack of exercise, a medical history of colon polypus and a family history of colon cancer. As a result, we can choose the group that is at a high risk for colon cancer and provide customized medical information and selective management services according to their characteristics.

• Journal of Information Technology and Architecture
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• v.11 no.1
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• pp.33-44
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• 2014

Recently, blogs have attracted much attention as personal media. The power of blogs as a way to provide valuable resources on Internet is so tremendous because of the high speed of information dissemination and the huge influence of the circulated information on Internet users even when the information itself is not true. Especially, contents on blogs that attract a lot of public attention are sometimes reproduced or magnified in an inappropriate way. In this paper, a method to measure the trust level of contents posted on personal blogs is proposed to reduce the damage of wrong information circulated along with blog networks. Trust variables such as relationship data in SNS are used to measure the comparative trust level of blog contents. The structure of the prototype system is also designed to apply this framework to blogsphere.

• 전기의세계
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• v.25 no.6
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• pp.8-13
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• 1976

The industrial processes have become complicated on a large scale bacause of improvement of productivity, research of efficiency, and shortage of locations to be suited for foundation of factories. Consequently, the instrumentation and control systems for operating these industrial processes have also been highly improved with the development of mass information means. In order to operate these large-sized and complicated industrial processes safely, the man-machine interface for correspondence between man and machines and the instrumentation system regarding process fault processing are playing an important role increasingly. This paper describes recent instrumentation system in the water purifying plant as an example of these industrial processes, and covers both man-machine interface and process fault processing. The annual water supply quantity and diffusion were 2, 000, 000, 000m$^{3}$ and 25.0% in 1950 inJapan, but they amounted to 12, 000, 000, 000m$^{3}$ and 86.7% in 1974, respectively. The demands of water will increase incessantly, while it becomes gradually difficult to secure water sources. Accordingly, local self-governing bodies such as municipal cooperation, towns, and villages often construct a large-scale water purifying plant at one place in common, as required, without constructing respective plants independently. It is an absolute requirement for the water purifying plant to avoid stopping water supply to fullfil its social responsibility from the viewpoints of its public utility enterprise, and also it has gradually become difficult to secure skilled operators enough to cover such water purifying plants that are additionally provided in various districts. Thus, the importance of the man-machine interface for assuring safety operation of the water purifying plant irrespective of unskillfulness of operators as well as the instrumentation system regarding process fault processing, or, safety instrumentation, is more and more increasing as the water purifying plants are on a large scale.

• International Commerce and Information Review
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• v.18 no.2
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• pp.3-26
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• 2016

Crowdfunding is growing up SNS spread, raising funds from numerous people which are offering necessary funding of private and enterprise using the internet-based platforms. The function of crowdfunding uses innovative financing in being business and start-ups having difficulty in financing. Crowdfunding in our domestic is concentrated on culture and arts in the early adoption phase, and is numerous projects with public features. However, the investment case of crowdfundig in e-commerce trade start-ups is rarely in spite of a increased attention for crowdfunding.. The purpose of this study examined the factors to be considered when using successfully crowdfunding on e-commerce trade start-ups. This study is understanding the legal and policy of crowdfunding market status and other countries, and suggests the activation of the direction of government policy, legal system, and participation of financing suppliers and investors as activating the law and policy system related the crowdfunding on a domestic in terms of e-commerce trade start-ups investment.

• Information Systems Review
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• v.7 no.1
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• pp.21-40
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• 2005

IT investment is continuously increasing. Its outcome, however, is not accomplished as easily as originally expected. There have a variety of efforts to overcome this dilemma. In public sector, information resource management (IRM) was suggested as one of the most effective approach for information & IT management. Accordingly, United States has been incorporating the IRM principles into information-related laws since 1980s. However, such efforts were insufficient in Korea. In this study we attempt to compare our information-related laws with United States laws with respect to major components of IRM. Based on this finding, we go one-step further to suggest ways to arrange a new legislation where the IRM would be a foundation for information & IT management.

• Architectural research
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• v.16 no.3
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• pp.109-120
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• 2014

South and North Korea, the divided nations on the Korean peninsula, began with the same modern city planning system, but following the adoption of different national ideologies-capitalism and socialism-, they established their own city planning system and developed their cities accordingly. However, the process of planning and developing a joint city of Kaesong Industrial Complex (KIC) led to the recognition about the need to bridge the differences and prepare for future joint development. This study examines North Korea's city planning system by comparing the two Koreas' systems, and identify the characteristics of North Korea's city planning system through a case analysis of the KIC. By comparing two cases, we found two distinct characteristics of North Korea's. The one is a tool for realizing ideologies and maintaining national system. The other one is that it is ideology-oriented system for the supreme leader and party while South Korea has control-oriented system for the public. We analyze the KIC case based on four pillars: planning system, development system and procedure, master plan, and use behaviors. Result of analysis shows that in KIC there are many socialistic features as we mentioned above in terms of planning system, urban design & structure, and use behavior even though a private enterprise-Hyundai Asan, in South Korea led the whole process. This study is meaningful in that it identifies the specific characteristics of North Korea's city planning focusing on the KIC and is expected to serve as a baseline material to set the future direction for North Korea's development.