하수도 시설 관리 시스템의 개발 및 적용

김준현,한영한,Kim, Joon Hyun,Han, Young Han 강원대학교 산업기술연구소 1999 産業技術硏究 Vol.19 No.-

An integrated sewer management system was developed for the analysis of sewer flow and for optimal operation of sewer works using ArcView and SWMM. SWMM and ArcView were dynamically linked together using Avenue in order to construct user-friendly management system. The developed system was applied to a residential area in Choonchun city to verify its utilities. All the relevant field data were analyzed on the basis of developed system, and the modeling of sewer flow was implemented using RUNOFF, EXTRAN, TRANSPORT in SWMM. This system is now in the process of connection to the management system of watershed and surface environment in order to develope an integrated environmental management system. Futhermore, this system will be a critical part of overall control system of sewer works including sewer line and wastewater treatment plant. As this system can provide comprehensive prediction of flow and pollution profiles, it could serve as a tool not only for optimal management, but also for decision support system to examine the efficiency of planning and implementation of sewer projects.

Web Based Comprehensive Environmental Control Engine

김준현,Kim, Joon Hyun Kangwon National University 1999 産業技術硏究 Vol.19 No.-

This paper is aimed at the development of comprehensive environmental management system, which can be operated on the basis of world wide web. This study has been initiated as a topic of G7 project in 1988, and will be accomplished in 2001. Even thought there should be lots of works remaining to achieve this goal, preliminary products can be summarized as follows : 1) integrated environments information management system, 2) web based control engine, 3) surface water environment management system, 4) subsurface water environment management system, 5) sewer and waterworks management system. The core methodology of the engine is the generalized multidimensional finite element matrices to depict the terms in the analysis of various partial differential equations. Spatial information management system (ArcView) and Visual Basic were extensively employed to construct GUI oriented web based engine. Developed systems were consist with very intense computer codes due to the necessity of combinatory management of environmental problems. The web based engine could be served as a decision tool for the integrated management of environmental projects in Korea.

공간정보시스템과 지하수모형을 결합한 지하환경관리시스템의 구축

김준현,한영한,Kim, Joon Hyun,Han, Young Han 강원대학교 산업기술연구소 1999 産業技術硏究 Vol.19 No.-

This study was performed to develop an information processing system for the sound conservation of soil and groundwater resources. The system contains the geographic spatial information system(GSIS), and the numerical model of groundwater flow and contamination. Numerical models (MODFLOW, MOC3D, MT3D, PMPATH, PEST, UCODE) and GSIS(ArcView) were integrated for the construction of an integrated management system of subsurface environment. The developed system was applied to the management of three mineral water companies located in clean mountain area. The impact of pumping over the overall catchment basin was modeled using the developed system for the decision of future management criteria.

유리체절제술과 병행된 수정체 초음파유화술시 공막터널절개와 투명각막절개의 비교

김준현,강성민,Joon Hyun Kim,Sung Min Kang 대한안과학회 2006 대한안과학회지 Vol.47 No.10

Purpose: To compare the results of two different incision methods: scleral tunnel vs clear cornea in cases phacoemulsification and posterior chamber intraocular lens implantation combined with pars plana vitrectomy. Methods: Between August 2003 and August 2005, 61 eyes with cataract and vitreoretinal diseases were treated by phacoemulsification combined with pars plana vitrectomy and PC-IOL implantation. Preoperative demographic data and postoperative best-corrected visual acuity (BCVA), astigmatism change, and complications were analyzed. Results: The mean age of patients in the scleral tunnel incision (Group 1) and clear corneal incision (Group 2) was 57.09±13.72 and 58.83±11.83 years respectively. Diabetes mellitus was the most common underlying disease resulting in vitreous opacity. Vision improved in 82% of Group 1 and 78% of Group 2. There was a significant difference in the postoperative astigmatic changes between Group 1 and 2 (1.37±1.13D vs 0.78±0.67D). No discernible differences such as recurrent vitreous hemorrhage, inflammation in anterior chamber, increased intraocular pressure or iris changes were noted between the two groups. Conclusions: Although there was no difference in the postoperative BCVA, two different incision methods yielded significant different postoperative astigmatic changes.

Dip 추출에서 유체 표면의 영향을 고려한 친환경 포토레지스트 박리공정

김준현(Joon Hyun Kim),김승현(Seung Hyun Kim),정병현(Byung Hyun Jeong),주기태(Gi-Tae Joo),김용성(Young Sung Kim) 한국생산제조학회 2016 한국생산제조학회지 Vol.25 No.1

This paper describes a green stripping process to effectively strip the remaining DFR layer on a non-alkali-based ITO glass surface after an etching process. A stripper, water-soluble amine compound, is used to investigate the characteristics of stripping ability and to suggest a valid method for the green process. Increasing the composition (5-30% concentration) of the ethanol amine-based stripper was found to greatly reduce the stripping time applied in the dipping method. The composition (30%) achieved an excellent stripping effect and free-residue impurities. Additionally, it was possible to obtain the effect of stripping in a way to sustain the release before generating DFR sludge from the ITO glass surface by using dipping condition (stripping time) in the composition. An Additional stripping process (buffering) out of dipping can realize productivity improvement and cost reduction because of the higher proportion of re-use of the stripping solution used in the DFR removal step.

自己同調 適應制御를 이용한 電力系統 安定化裝置의 多機系統適用

金俊鉉(Joon-Hyun Kim),李尙根(Sang-Keun Lee) 대한전기학회 1993 전기학회논문지 Vol.42 No.11

自己同調 適應制御를 이용한 電力系統 安定化裝置의 설계

金俊鉉(Joon-Hyun Kim),李尙根(Sang-Keun Lee) 대한전기학회 1993 전기학회논문지 Vol.42 No.8

해외자회사 정보를 이용한 국제다각화 측정 및 이익의 질과의 관계

김준현 ( Joon Hyun Kim ) 한국회계학회 2018 會計學硏究 Vol.43 No.3

본 연구는 연결재무제표에 공시된 해외자회사 세부 정보를 바탕으로 우리나라 기업들의 국제적다각화 수준을 측정하고, 이를 바탕으로 국제다각화가 이익변동성 및 이익조정 등 이익의 질에 미치는 영향을 실증 분석하였다. 다국적기업들은 해외 다수의 국가에 자회사들을 두고 전세계적으로 사업을 영위하므로, 국제다각화 수준을 측정함에 있어 해외자회사를 통한 사업활동 규모를 고려해야 한다. 그럼에도 국내 선행연구들은 자료 한계로 인해 수출 및 외화자산 총액을 바탕으로 한 대용치를 사용한 관계로 국제다각화 측정 방법의 개선에 대한 필요성이 제기되어 왔다. 이러한 선행연구의 요구에 부응하여 본 연구에서는 2011년부터 국제회계기준상 연결재무제표 주석에 공시된 종속회사 주소 및 자산가액 등의 정보를 활용하여, 기업의 전체 자산이 국내외 각국에 분산된 정도를 측정하는 새로운 방법을 제시하였다. 이에 대한 검증 결과, 새로운 국제다각화 변수는 우리나라의 주요 글로벌기업들을 보다 정확하게 식별하는 등 기업의 국제화 수준을 효과적으로 포착하는 것으로 나타났다. 또한 이러한 방법으로 측정된 국제다각화와 이익의 질과의 관계를 분석한 결과, 국제다각화 수준이 높을수록 이익의 변동성은 줄어들고 이익조정 수준 또한 낮아지는 것으로 나타났다. 이는 국제다각화 수준이 높을수록 여러 국가들로부터의 손익이 합쳐지면서 비체계적이고 일시적인 현금흐름 및 발생액이 상쇄되어 전반적으로 이익의 변동성 및 이익조정 유인이 줄어들기 때문인 것으로 보인다. 이와 같은 해석은 국제다각화가 이익지속성에 긍정적 영향을 미친다는 추가분석 결과와도 부합한다. 본 연구는 연결재무제표상 해외자회사 정보를 활용한 국제다각화 변수의 적합성을 입증함으로써 선행연구의 한계를 극복하고 후속 연구에 활용할 수 있는 방법론을 제시하였다. 또한 이를 바탕으로 국제다각화가 이익의 질에 미치는 영향을 일관성 있게 입증함으로써 선행연구에서의 불확실한 실증 결과에 대한 대안을 제시하였다는 점에서도 의의가 있다. This study measures the level of international diversification of Korean firms based on the detailed information on foreign subsidiaries as disclosed under the consolidated financial statements, and thereby tests for the association between the international diversification and the earnings quality including earnings volatility and earnings management. This study presents new methods for computing the degree of dispersion of corporate business activities all over the world, using the details on the location and size of foreign subsidiaries. I find that the new measures capture the multinationality of the major Korean global firms far better than the previous method based on the amount of export sales or foreign exchange assets. Further, I find that firms with higher level of international diversification have less volatile earnings and lower amount of earnings management. The results are consistent with the view that international diversification increases the portfolio hedge effect among the various sources of earnings from many countries, which results in decreasing the earnings variability and the motivation for earnings management. Consistently, the additional test result also shows that the international diversification increases the earnings persistence. This study contributes to the literature by empirically verifying the validity of new measures of international diversification using the foreign subsidiaries’ data, and clarifying the influence of international diversification on the earnings quality which was inconsistent under the previous studies.

자본주의 초기 사리추구의 정당화 과정에 대한 역사적 고찰

김준현(Joon Hyun Kim) 한국사회역사학회 2001 담론 201 Vol.4 No.2

N/A

경제적 세계화와 빈곤문제

김준현 ( Joon Hyun Kim ) 한국사회역사학회 2005 담론 201 Vol.7 No.2