• Journal of the Korea Society of Computer and Information
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• v.13 no.2
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• pp.19-29
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• 2008

In case of unit testing, White-box test can be used to closely check source code and to analyze logic and statement errors. On the other hand, in case of function testing of system level, Black-box test can be mainly used to compare actual and expected results by inputting test data because the scale of function is large. This Black-Box test in system testing level has problem in tracing errors in source code when we find errors. Moreover applying White-box test is not easy for system testing level because the levels of test target are different. Therefore this paper suggests the vertical test method of a practical and integrated system level which can checks up to source code level using White-box test style although it aims to test the highly abstract level like a system function. In addition, the experiment explains how to apply the vertical test by displaying an example which traces from UML specification model to the source code and also shows efficiency of error trace.

• Journal of Distribution Research
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• v.11 no.1
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• pp.1-20
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• 2006

In these days of severe changes in the environment and economic slump, it is indispensable for firms to cope with the environment effectively. This study is an attempt to investigate the mechanisms through which output sector munificence and dynamism affect distribution channel performances, such as, satisfaction, trust, and commitment. Especially, this study focus on moderating effects on distribution channel integration that has not been investigated in the past. For the purpose of empirical testing, 70 corporate channels, 120 contractual channels, and 100 conventional marketing channels have been selected and analyzed. According to the result from moderated regression analysis, munificence strengthens distribution channel performances, while dynamism weakens them. And integration reinforces the effects.

• International Commerce and Information Review
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• v.14 no.2
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• pp.81-119
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• 2012

In order to maintain high level of control over and close coordination of foreign marketing activities, export manufacturers often consider vertical integration strategy into global distribution. However, full integration is not always a feasible option. The purpose of this study is to investigate the alternative ways to achieve optimal level of control over export channel system for desirable channel performance. This study investigates different options for integration of the vertical channel structure, and examines their effect on the performance. The findings of this study suggest different combination of ownership and coordination level has varying impact upon channel performance: efficiency, effectiveness, and adaptiveness. This implies exporters may achieve desirable performance control over export channel without fully integrating the channel via ownership.

• The KIPS Transactions:PartD
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• v.14D no.7
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• pp.753-762
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• 2007

Traceability has been held as an important factor in testing activities as well as model driven development. Vertical traceability affords us opportunities to improve manageability from models and test cases to code in testing and debugging phase. Traceability also makes overcome to difficulties of going up-and-down abstraction level to find out error spot of faults discovered by testing This paper represents a vertical test method which connects a system test level and an integration test level in a test stage by using UML. Experiment of how traceability works and how effective focus on error spots has been included using concrete examples of tracing from models to the code.

• Journal of the Korean Association of Geographic Information Studies
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• v.16 no.4
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• pp.54-63
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• 2013

In this paper, we evaluate the accuracy of the vertical positioning by distance using Network RTK-GPS. The experimental results confirm that Network RTK-GPS method can acquire data quickly and accurately than conventional leveling methods so that the Network RTK-GPS method is a relatively efficient and economical way for the vertical positioning. Results of validation using permanent GPS stations indicate that visible satellites, PDOP, and VDOP are very good for the vertical positioning. Integrated reference points such as U0997 and U0921 are satisfied with 3 ratings in the rules of public leveling and all the rest are proved improper. When the vertical positioning using Network RTK-GPS is implemented, the geoid height of EGM2008 should be applied for leveling. If the number of geodetic satellite are increasing in the near future, the vertical positioning using Network RTK-GPS can be possible in all the range.

• The KIPS Transactions:PartD
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• v.16D no.2
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• pp.213-222
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• 2009

Traceability has been held as an important factor in testing activities as well as model driven development. Vertical traceability affords us opportunities to improve manageability from models and test cases to code in testing and debugging phase. Traceability also overcomes difficulties by the separation between abstraction levels when we trace errors from models to source code after test. To support a rigorous test this paper proposes XML based traceability which vertically trace from model and test case to source code. This paper explains how the traceability works and finds out error spots Through experiments using a concrete example.

• Journal of the Korean Geographical Society
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• v.49 no.3
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• pp.357-370
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• 2014

This paper aims at analyzing the use of REITs for developing student housing. To do this, firstly, the case studies of student housing REITs in U.S. are analyzed, and secondly, possibility and schemes of using REITs in Korea for the expansion of student housing. REITs are actively participated in the investment and management of student housing in U.S. and they are vertically integrated real estate investment operating companies which play a role of design-development-investment-managementconsulting. Student housing REITs can be fully used in Korea. To do this, special strategy integrating investment and management strategy should be examined. In these context, joint-venture model and PPP-conbined model are suggested to use REITs effectively.

• KDI Journal of Economic Policy
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• v.11 no.3
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• pp.61-85
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• 1989

본고(本稿)에서는 최근 달성된 전국민의료보험(全國民醫療保險)(NHI)의 재원조달방식(財源調達方式)을 개관한 다음 소득재분배관점(所得再分配觀點)에서 이론적(理論的), 실증적(實證的) 분석(分析)을 행하고자 한다. 의료보험(醫療保險)은 주로 건강한 사람으로 부터 병든 사람으로 의료(醫療)의 수평적(水平的) 재분배기능(再分配機能)을 행하나 결과적으로 수직적(垂直的) 재분배(再分配)에도 영향을 주게 된다. 형평(衡平)과 관련하여 모든 국민(國民)들에게 필요한 최저수준(最低水準)의 의료이용(醫療利用)을 보장한다든가 의료이용(醫療利用)에 따른 경제적(經濟的) 부담(負擔)을 균등하게 한다든가 하는 제기준(諸基準)의 선택은 결국 우리 사회(社會)가 내려야 할 가치판단(價値判斷)의 문제일 것이나 우리의 여건에 비추어 전자(前者)를 기조(基調)로 하되 후자(後者)를 지향하는 접근방식이 바람직하고 평가된다. 실증분석(實證分析)의 결과는 비록 작은 크기이기는 하나 어느 정도 재분배효과(再分配效果)를 보여주었으나 프로그램간 급여(給與)와 보험료부담(保險料負擔)의 측면에서 격차가 벌어지고 있는 실정이어서 NHI 재정통합(財政統合)이라는 장기목표(長期目標) 아래 소득연계적(所得連繫的)인 보험료부담(保險料負擔) 및 급여체계(給與體系)를 단계적으로 확립해 나가되 우선은 의료보호(醫療保護)부터 이 방안(方案)을 실천에 옮기도록 권고한다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.15 no.7
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• pp.1405-1414
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• 2011

This paper analyzes the impact of the change in telecommunication regulation on network investment such as the integration of telecommunication service. The integration of telecommunication service plays a role of separating the behavior regulation from entrance regulation and reducing a entrance constraints. Therefore, it is expected that the market spill over effect is high through the improvement of behavior regulation such as interconnection regulation, facilities provisions, retail price regulation, bundling, number portability of VoIP. This paper discusses the critical factor affecting the decision making process in respect of the firm level and analyzes the impact path guiding investment and innovation. Finally, the paper proposes the guideline for telecommunications policy.

• Journal of Korean Society for Geospatial Information Science
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• v.22 no.3
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• pp.47-56
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• 2014

Recently, the velocity of sea-level rising has increased due to the global warming and the natural disasters have been occurred many times. Therefore, there are various demands for the integration of vertical reference datums for the ocean and land areas in order to develop a coastal area and prevent a natural disaster. Currently, the vertical datum for the ocean area refers to Local Mean Sea Level(LMSL) and the vertical datum for the land area is based on Incheon Mean Sea Level(IMSL). This study uses 31 points of Tidal Gauge Bench Mark (TGBM) in order to compares and analyzes the geometric heights referring LMSL, IMSL, and the nationally determined geoid surface. 11 points of comparable data are biased more than 10 cm when the geometric heights are compared. It seems to be caused by the inflow of river, the relocation of Tidal Gauge Station, and the topographic change by harbor construction. Also, this study analyze the inclination of sea surface which is the difference between IMSL and LMSL, and it shows the inclination of sea surface increases from the western to southern, and eastern seas. In this study, it is shown that TGBM can be used to integrate vertical datums for the ocean and land areas. In order to integrate the vertical datums, there need more surveying data connecting the ocean to the land area, also cooperation between Korea Hydrographic and Oceanographic Administration and National Geographic Information Institute. It is expected that the integrated vertical datum can be applied to the development of coastal area and the preventative of natural disaster.