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C#을 이용한 XML과 관계형 데이터베이스 매핑 모듈 개발
정승훈 ( Seung-hoon Jung ),고재진 ( Jaejin Koh ),권순덕 ( Sundeok Kwon ),안형근 ( Hyoungkeun Ahn ),양상석 ( Sangseok Yang ) 한국정보처리학회 2004 한국정보처리학회 학술대회논문집 Vol.11 No.2
인터넷의 사용 증가로 정보의 양은 기하급수적으로 증가하고 있으며 웹 데이터의 표준인 XML의 데이터 표현의 유연성으로 인해 EDMS(Electronic Document Management Syste), ebXML(e-businesseXtensible Markup Language)등 웹 기반의 전자문서를 이용하는 XML를 문서 교환 및 표준 문서 형식으로 도입하고 있는 실정이다. 이런 XML문서들을 저장관리 하기 위해 XML전용 Database도 현재 많이 연구되고 있다. 하지만 이런 XML전용 Database들은 관계형 데이터베이스보다 실용성이 떨어지는 점들이 많아 XML과 관계형 데이터베이스 매핑에 대한 연구도 활발히 진행중이다. 본 논문에서는C#을 이용하여 XML과 관계형 데이터베이스 간의 매핑을 위한 모듈을 개발하였으며, XML의 element와 관계형 데이터베이스의 필드를 상호 매핑시켜 줌으로 인해 XML문서의 element를 정확하게 저장, 관리 할 수 있다.
생산성논집 : 공정성 이론을 근거로 한 IT 서비스 공급자의 신뢰와 직무만족이고객지향성에 미치는 영향에 관한 연구: 공공부문 IT아웃소싱을 중심으로
정승훈 ( Seung Hoon Jung ),안준모 ( Joon Mo An ),권두순 ( Do Soon Kwon ) 한국생산성학회 2014 生産性論集 Vol.28 No.3
With the recent rapid development of the IT industry, it is getting more difficult for corporations to maintain a continuously competitive edge and secure outstanding technologies and highly skilled workers. In order to, therefore, achieve a strategically dominant position over their competitors, corporations are considering IT outsourcing to give them an advantage. This study is designed to help us understand the influential factors of the information system quality of public IT outsourcing, and analyze how these factors affect customer orientation. A research model utilizing the main variables of the equity theory was suggested, emphasizing fair compensation for the organization, and which is expected to affect the customer orientation of public IT outsourcing, trust, and job satisfaction. Inorder to verify this research model empirically, questionnaires were conducted on the employees of IT outsourcing corporations. 154 samples were collected through questionnaires, and path analysis was performed to analyze the relationships among factors. As a result of path analysis, distributive justice, an influential factor of public IT outsourcing, significantly influenced trust, but did not significantly influence job satisfaction. Procedural justice significantly influenced trust and job satisfaction. Interactional justice did not influence trust, but significantly influenced job satisfaction. Trust significantly influenced job satisfaction but did not influence customer orientation. Lastly, job satisfaction significantly influenced customer orientation. This study suggests that efforts must be made to improve organizational justice for public IT outsourcing corporations in order to satisfy their customers`` various needs and qualitatively improve their IT services.
정승훈(Seung-hoon Jung),신지한(Jihan Shin),김지홍(Jihong Kim) 한국해군과학기술학회 2018 Journal of the KNST Vol.1 No.1
It is not easy to predict the future of the navy. However, some estimates will be made based on the development trends and implementation strategies of the U.S. forces, which are the most influential in the international community. There are several key elements of the future fleet that the U.S. military expects, but the unmanned system is increasingly taking up. There are disadvantages to the unmanned system, too. That is, a network must be configured in a wireless environment. In particular, a number of studies have been conducted on the ability of drones to respond to the rapidly emerging weapons systems. In line with this trend, response weapons are being studied in the same concept as drone response. In the conventional navy, the whole rotation consists of defensive electronic transfer shafts, so aggressive electronic rotation on the sea requires a separate weapons system that is beyond the scope of the existing weapons system. Therefore, it may be necessary to review the concept of electronic warships in order to carry out aggressive electronic warfare at sea.
정승훈(Seung-hoon Jung),맹주성(Joo-sung Maeng) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.11
The present paper suggests new method to know the effects of molecular diffusion and the helicity of microchannel flows on mixing in passive micromixers, which are essential components of a micro fluidic chip. In this study. Helix Index is newly defined as the magnitude of chaotic advection. Relationship between Helix Index and Mixing Index is analyzed numerically such as the wide range of Peclet and Reynolds numbers in three dimensional serpentine micro channel when using soluble solutions (water/glycerol). As a result, a simple algebraic equation is derived by this relationship based on a regression analysis. The algebraic equation is found to be able to accurately predict the mixing performance without solving the coupled, complex momentum and mass transfer equations.
기체투과도가 다른 포장재로 포장한 ‘엘리오트’ 블루베리와 ‘설향’ 딸기의 냉장 저장 중 품질 변화
정승훈(Seung Hun Jung),강지훈(Ji Hoon Kang),박승종(Seung Jong Park),성기현(Ki Hyun Seong),송경빈(Kyung Bin Song) 한국식품영양과학회 2014 한국식품영양과학회지 Vol.43 No.6
블루베리 및 딸기의 품질유지를 위한 MAP의 활용 가능성을 확인하고자 비가열 병합 처리 세척과정을 거친 ‘엘리오트’ 블루베리와 ‘설향’ 딸기 시료를 기체투과도가 다른 polyolefin film(6,000 mL O2/m2·24 hr·atm at 24°C)과 PA/PA/PE film(60 mL O2/m2·24 hr·atm at 24°C)에 각각 포장한 후 4°C에 저장하면서 품질 변화를 측정하였다. 수확 후 블루베리와 딸기에 병합 세척처리를 한 결과, 총 호기성균은 각각 2.50, 1.97 log CFU/g, 효모 및 곰팡이에서는 각각 1.95, 2.18 log CFU/g의 감균 효과를 얻어 우수한 살균 효과를 나타내었다. 또한 PA/PA/PE film 포장에 의한 낮은 기체투과도로 인한 높은 이산화탄소 농도 환경에서 미생물의 생육이 저장 중 억제되는 것을 확인하였고, 중량 감소율에 있어서도 높은 기체투과도를 갖는 polyolefin film으로 포장한 처리구보다 낮은 감소율을 보여, 소포장된 블루베리와 딸기의 경우 기체투과도가 낮은 포장재를 이용하는 것이 효율적인 것으로 나타났다. 따라서 본 연구 결과, 수확 후 블루베리 및 딸기의 적절한 기체 조성을 위한 포장재의 선택은 품질 유지 및 유통기한 증대에 도움을 줄 것으로 판단된다. Blueberries and strawberries are highly perishable and easily contaminated with microorganisms. To maintain the quality of these commodities during refrigerated storage, the effects of two packaging materials as well as passive modified atmosphere packaging on the quality of blueberries and strawberries were investigated. The harvested blueberries and strawberries were first treated with combined non-thermal treatment of aqueous chlorine dioxide and fumaric acid, followed by packaging with polyolefin film (6,000 mL O2/m2?24 hr?atm at 24°C) and polyamide/polyamide/ polyethylene film (PA/PA/PE, 60 mL O2/m2?24 hr?atm at 24°C), respectively. After combined sanitizer treatment, the populations of total aerobic bacteria in blueberries and strawberries were reduced by 2.50 and 1.97 log CFU/g while those of yeast and molds were reduced by 1.95 and 2.18 log CFU/g, respectively, compared with the control. In particular, microbial growth in these samples packed with PA/PA/PE film was reduced during refrigerated storage. In addition, the blueberries and strawberries packed with PA/PA/PE film underwent lower weight loss than those packed with polyolefin film during storage. These results suggest that appropriate packaging with proper gas permeability is necessary to maintain the quality of blueberries and strawberries during refrigerated storage.