• The KIPS Transactions:PartB
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• v.12B no.6 s.102
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• pp.661-670
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• 2005

According as services that offer multimedia streams are activated on the Internet, users who use these services we increased extremely. As a result of this, the increase of network traffic was occurred. Also it caused the problems such as the discontinuous playback in case of the s#ream playback and the asynchronization between a video and an audio. To solve these problems, it needs a method that guarantee the stable playback of media streams and a method of media transfer that can interact between a service user and media. Existing related researches has achieved the synchronization through various methods, but did not shown the results of satisfaction in the aspect of interaction. In this paper, we inserted the interactive objects in each media file, designed functions that these objects can use each other's information, and solved the interaction and the synchronization between a video and an audio. Also, we solved the discontinuous playback of a stream by the insufficiency of network bandwidth through using variable buffers.

• The Korean Journal of Financial Management
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• v.27 no.2
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• pp.63-84
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• 2010

We investigate whether FX hedging materially increases firm value by testing the valuation effect of Foreign Exchange Risk Insurance in Korea, using our sample of 84 listed firms with 617 observations between 2000 and 2008, Employing Tobin's Q as a proxy of firm value and foreign exchange risk insurance as a proxy of hedging instrument, we find a positive relation between firm value and the use of foreign exchange risk insurance. The hedging premium is statistically significant and is on average 7.4% of sample firm value. We also find our empirical results consistent with the preceding evidence that firm uses the hedging instrument in order to alleviate economic frictions and then hedging causes an increase in firm value.

• The Journal of the Korea Contents Association
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• v.9 no.7
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• pp.315-324
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• 2009

Public institutions guaranteed exclusive position of core business are likely to be inefficient in management. Past governments made various efforts to innovate public institutions. Participatory government drove innovation of public institutions through Ministry of Planning and Budget, and this innovation policy had problems as followings: shortage of common sense of innovation, lack of understanding of innovation, gradual execution of innovation instead of system innovation for business innovation, lack of consideration of characteristics of various public innovation, overlapping of evaluation system, and nonobjective design of evaluation indicator. MB government has diverse assignments for improvement of these problems as followings: transformation of business mind, voluntary participation of employee, improvement of management system of public institutions, reform of business evaluation system, promotion of internal competition, and construction of performance based business system. What is the most important point for successful reform of public institution is to achieve the support of general public with effective action plan and substantial programs.

• The Journal of the Korea Contents Association
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• v.16 no.2
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• pp.68-81
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• 2016

This study suggests, based on analysis of current status, improvement plans for the local government's public mobile applications. Fist of all, this study selected analysis elements and established an analysis framework for public mobile applications. Then the study analyzed the applications developed by all local government and application management practices in Seoul-City. The status of public applications shows that there are no institutional guidelines and the practical use of the public application is low in relation to the invested costs. Additional problems are the imprudent development, non-reflection of demand, absence of systemic management. For the improvement plans, the study suggests understanding of exact demand, detailed examination of validity, offering of effective information and the utilization of double-way interaction application. The management side of the improvement plans addresses the preparing for public application ordinance, building proper management system, regular check, education and active promotion.

• Journal of Advanced Navigation Technology
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• v.13 no.5
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• pp.749-755
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• 2009

This paper described the design and implementation of the FRA(Fault Recovery Agent) for home network environment based on IP-USN. This system consists of a FDA, FSA, and FRA. FDA is an agent that detects an fault by hooking techniques for multimedia distance education based on IP-USN environment. FSA is an agent that is an fault sharing system for multimedia distance education based on IP-USN environment. FRA is a system that is suitable for recovering software fault for multimedia distance education running on home network environment based on IP-USN. It is necessary for the system to be protected by reactivity of media service instance instead of breaking process of session. This system is limited only for FRA modeling.

• Korean Journal of Construction Engineering and Management
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• v.14 no.1
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• pp.71-81
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• 2013

Recently, Korean Traditional House is being reconsidered as a alternative and eco-friendly residential housing. With these flows, government and industry actively studies the modernization and industrialization of Korean Traditional House. Apply for BIM as a way of modernization and industrialization of Korean Traditional House, research has been actively conducted. Korean Traditional House is building that is assembled by individual Component Therefore it is very useful for modernization of the Korean Traditional House to design Korean Traditional House With BIM. Which is the management technology that produces and distributes information of the architecture. But compared with the effect, the use of BIM is sluggish in the construction. Therefore, In this study after surveying about lowly using BIM on point of AEC(Architect-Engineer-Contract), the result is analyzed with AHP(Analytic Hierarchy Process). So the aim of this study is to offer the base to find the solution of the Affecting factors about lowly using BIM.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2004.11a
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• pp.462-467
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• 2004

Design-build, which is defined as single source responsibility for design and construction, has been widely used in large public works since governmental formulation of measure for encouraging use of design-build in 1996. However, civic groups and small and medium sized enterprises are highlighting over-competition and unbalanced market shares of conglomerate in domestic design-bid market and insisting on decrease in the use of design-build and absorption into the lowest-price bidding. This study collected information about cost, schedule, quality, new technology adoption from 51 civil design-build projects and measured their performance.

• Journal of Labour Economics
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• v.40 no.3
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• pp.29-55
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• 2017

We examine the effects of the self-reported subjective and the objective health indexes on work compensations. The compensations consist of monetary factors, such as wages, and non-monetary factors reflecting job risks such as the workplace accidence. The wages and workplace injuries are clearly affected by gender and age differences as the subjective and objective health factors of elderly workers are combined with physical and systematic work environments. Mental health problems such as work depression are more serious especially for high income elderly groups. The elderly workers experienced with physical problems and chronic illnesses are led to the decrease in wages and the increase in safety accident risks at work sharply. Therefore, we need to provide supporting services, retirement planning designed by companies, supported by the government enhanced risk working conditions and the weakness on protecting jobs.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.342-346
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• 2006

As the construction industry gets specialized and complicated gradually, the number of participating organizations increased, and also the necessity of construction management(CM) is getting bigger because construction scale is becoming bigger. However, in spite of the increase in necessity, its activation through performance measurement and evaluation is very insufficient compared with advanced countries. Therefore, a checklist for CM by construction stage using AHP method in the current study is for efficient CM for successful completion of a project by dividing CM affairs by construction stage and checking performance degree by stage. If the CM checklist by construction stage, the final result of the study, is used by all the parties concerned such as construction managers, orders, designers, constructor, etc., it will be possibile to improve work efficiency of project management and produce a final outcome corresponding to the goals of a project.

• The Transactions of the Korea Information Processing Society
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• v.6 no.8
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• pp.2204-2212
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• 1999

In this paper, we present techniques which perform incremental timing analysis using Timed Boolean Algebra that solves the false path problem and extracts the timing information in combinational circuits. Our algorithm sets histories of internal inputs that are substituted for internal output and extracts maximal delays through checking sensitizability of primary outputs. Once finding the sum of primitive delay terms, then it applies modified delay with referencing histories of primary output and it can extract maximal delays of primary outputs fast and efficiently. When the structure of circuit is changed, there is no need to compute the whole circuit again. We can process partial timing analysis of computing on the gates that are need to compute again. These incremental timing analysis methods are considered both delay changes and structure of circuit, and can reduce the costs of a trial error in the circuit design.