나트륨 섭취량 추정을 위한 소변 중 Cl^-의 간이적 측정방법의 유용성 검증

이성호,이채준,주성미,이현주,라왕연,김순옥,Lee, Sung-Ho,Lee, Chae-Joon,Ju, Sung-Mi,Lee, Hyun-Joo,Ra, Wang-Yeon,Kim, Soon-Ok 한국식품영양학회 2016 韓國食品營養學會誌 Vol.29 No.1

The purpose of this study was to measure concentrations of $K^+$, $Na^+$, $Cl^-$ by ionometer with check salt strip, simple salimeter and Ion-selective electrode (ISE) and compare the results of each mensuration; furthermore, the possibility of inferring the $Na^+$ concentration from $Cl^-$ concentration of urine and the impact of $K^+$ on the concentration of each ion was examined. The results showed that ISE determined $Na^+$ and $Cl^-$ concentrations in the urine are highly interrelated (R=0.9039); in addition, concentrations of $Cl^-$, measured with strip and ISE from urine are highly interrelated (R=0.9338). The concentration of $Na^+$ in urine, inferred by measuring $Cl^-$ concentration with strip, has a high relationship (R=0.8580) with the concentration of $Na^+$ in urine, measured by ISE. The results of our study will increase awareness of $Na^+$ intake and the utility of check salt strip, as well as the possibility of inferred $Na^+$ concentration from measures of $Cl^-$ concentration as a screening test for reducing sodium intake.

견의 총백혈구수 및 호산구수의 동시적계산을 위한 개량희석액에 관한 연구

이성호,이방환,이원창,Lee Sung Ho,Lee Bang Whan,Lee Won Chang 대한수의사회 1978 대한수의사회지 Vol.14 No.1

The study was conducted in an attempt to estimate the efficiency of various diluting fluids for eosinophil count to oxalated blood and EDTA blood of human and canine, and to prepare the improved diluting fluid adaptable to concurrent direct counts of eosi

Lee's 메뉴엔지니어링 분석법(LME)의 적용 - 이탈리아 피자류를 중심으로 -

이성호,Lee, Sung-Ho 한국식품영양학회 2020 韓國食品營養學會誌 Vol.33 No.1

The purpose of this study is an application of Lee's Menu Engineering (LME) method for menu analysis on the eight kinds of pizza selected from 17 kinds of pizza served by an Italian restaurant near by the Keimyung College University campus. The eliminated nine items were in the third quadrant or below the trend line. The LME method is more efficient than generally used methods such as the Miller, Kasavana & Smith, Uman, Pavesic and Merricks & Jones method. The LME method comprises reference lines and four quadrants created by x, y axes and its average values. The x and y axes comprise the sales ratio (MM%, percentage of the Menu Mix) and the weighted contribution margin (WCM%, percentage of the Weighted Contribution Margin) respectively. The obtained results are such that total sales increased by 1.59% from 58,747,200 won to 59,684,000 won, despite the decrease in sales volume. Total contribution margin also increased from 35,248,320 won to 35,810,400 won. The trend line also shows from y=0.9147x (R²=0.703) to y=0.9944x (R²=0.9893). These results indicate that the LME method is superior in practical applications.

감육배관의 건전성평가 및 정비 관련 기술기준 고찰

이성호,이요섭,김홍덕,이경수,황경모,Lee, Sung Ho,Lee, Yo Seob,Kim, Hong Deok,Lee, Kyoung Soo,Hwang, Kyeong Mo 한국압력기기공학회 2015 한국압력기기공학회 논문집 Vol.11 No.2

Local wall thinning and integrity degradation caused by several mechanisms, such as flow accelerated corrosion, cavitation, flashing and/or liquid droplet impingement, is a main concern in secondary steam cycle piping system of nuclear power plants in terms of safety and operability. Thinned pipe management program (TPMP) has being developed and optimized to reduce the possibility of unplanned shutdown and/or power reduction due to pipe failure caused by wall thinning. In this paper, newest technologies, standards and regulations related to the integrity assessment, repair and replacement of thinned pipe component are reviewed. And technical improvement items in TPMP to secure the reliability and effectiveness are also presented.

KASINICS 광학계의 고스트 분석

이성호,육인수,진호,박수종,한정열,이대희,공경남,조승현,박영식,박장현,한원용,Lee, Sung-Ho,Yuk, In-Soo,Jin, Ho,Pak, Soo-Jong,Han, Jeong-Yeol,Lee, Dae-Hee,Kong, Kyung-Nam,Cho, Seung-Hyun,Park, Young-Sik,Park, Jang-Hyun,Han, Won-Yong 한국천문학회 2005 天文學論叢 Vol.20 No.1

The reimaging optics of the KASINICS (KASI Near Infrared Camera System) includes many transparent components like an entrance window, band-pass filters, and blocking filters. As observational targets or in-field background objects, bright stars may cause optical ghosts that can significantly degrade the system performance of the KASINICS. We estimated analytically the relative brightness of ghost components with respect to a point source and examined the effects of tilting optical components as a method of suppressing ghosts. We also performed numerical ray tracings including all the optical components and found the results are consistent with those of the analytic estimations. We conclude that the KASINICS will not suffer from significant ghost effects with appropriate anti-reflection coatings and fittings for the optical components.

길이방향으로 연속된 래티스를 가지는 철선 트러스데크의 구조 거동

이성호,박형철,오보환,조순보,Lee, Sung Ho,Park, Hyung Chul,Oh, Bo Hwan,Cho, Soon Bo 한국강구조학회 2009 韓國鋼構造學會 論文集 Vol.21 No.1

철선 트러스데크는 기존의 재래식 슬래브 거푸집이나 일반 데크플레이트 공법을 대체하여 철골조는 물론 철근콘크리트 구조물에도 사용이 점차 증가하고 있다. 현재 사용되고 있는 기존의 트러스 데크는 래티스 철선과 하부 철선의 비연속적인 절점간격에 의한 트러스의 비렌딜거동에 의해 완전한 트러스형상에 비해 처짐이 커지는 문제점이 있다. 본 연구는 이러한 문제점을 해결하기 위해 래티스 철선과 상하부 철선이 연속적으로 연결되어 비렌딜거동이 없는 순수 트러스형태를 구현함으로써 처짐성능이 우수한 새로운 형태의 데크를 고안하였다. 개발된 시스템의 구조적 거동을 평가하고자, 해석 및 성능평가 실험을 수행하였다. 처짐에 영향을 주는 요소를 중심으로 래티스 철선의 길이방향 연결형태, 간격을 해석과 실험의 주요 변수로 설정하였다. 해석과 실험은 실제 시공 시 타설되는 콘크리트 하중이 아연도 철판을 통해 철선에 작용하는 것을 고려하여 아연도 철판에 직접 등분포 하중을 가력하였다. 구조해석 및 실험을 통한 분석결과 철선 트러스데크의 길이방향 형태, 즉 래티스 철선의 길이방향 연결 형태가 구조적 거동에 영향을 주는 주요한 인자로서 작용했으며, 래티스 철선을 길이방향으로 연속적으로 연결함으로써 비렌딜거동에 의한 영향을 감소시킬 수 있었다. 또한 래티스 철선의 연결간격을 증가 시킬 경우에도, 상, 하부 철선에 큰 응력증가 없이 우수한 처짐 성능을 발현 할 수 있었다. A truss deck system that has replaced the slab form conventional method has become widely used in the construction of reinforced concrete structures as well as steel structures. The current commercial products, however, have some problems. The discontinuity between the lattice wires on the joint of the bottom wire induces vierendeel behavior, which increases the deflection of the system. In this research, a new truss deck system with continuous lattice wires on the level of the bottom wire was developed to reduce the system's vierendeel behavior and to improve its deformation capacity. To investigate the system's structural behavior, an experimental test and an analysis were performed. The main parameters of the test and analysis were the longitudinal shape and spacing of the lattices. To simulate the loading condition in the construction field, uniform construction loads were directly applied on the deck plates of the analysis model and the test specimens. The results of such analysis and test revealed that the longitudinal shape of the lattice wires is a major factor affecting the structural behavior of a steel wire truss deck. Thus, continuous lattice wires could result in decreased vierendeel behavior in the steel wire truss deck. It was also found that the truss deck system with lattices spaced longer than in the conventional products could be effectively used without increasing the member stresses.

벤처기업의 지식중심문화의 영향에 관한 연구

이성호,Lee, Sung-Ho 한국벤처창업학회 2012 벤처창업연구 Vol.7 No.1

본 연구는 벤처기업의 성과를 제고시키기 위하여 지식경영에 대한 지식중심문화와 협동학습의 영향을 파악하고자 문헌연구와 실증분석을 수행하였다. 지식이 경쟁우위의 핵심역량이 되어 가고 있는 지식경제하에서 기업 조직 성공의 관건은 지식경영을 선도할 구성원들의 자율성과 풍토가 마련된 가운데 효율적인 학습을 위한 협동적 분위기가 적실히 요구되고 있다. 실증분석 결과는 지식중심문화의 자율성과 조직풍토가 성과에 영향을 미칠 때 협동학습의 조절효과가 없었으며, 규모별 비교에서 중소벤처기업의 경우에는 조절변수인 협동학습이 성과에 유의적인 영향을 미치고 있었고, 대벤처기업의 경우에는 조절변수인 협동학습이 성과에 유의적인 영향을 미치고 있었으며, 조직풍토는 유의적인 영향을 미치고 있는 것으로 나타났다. This paper analyzes the relationships between knowledge-centered culture, learning process, and knowledge/learning outcomes. Knowledge management researches have emphasized the important role of a knowledge-centered culture in venture business. After a literature review, research model is developed and the research hypothesis is made. And then, the hypothesis is tested using regression analysis with data collected from venture firms. The results of the empirical study show that cooperative learning does not strengthen the knowledge outcomes on the autonomy and organizational climate of knowledge-centered culture.

고속철도에 있어서의 정보시스템 구현 사례에 대한 연구

이성호,안중호,Lee, Sung-Ho,Ahn, Joong-Ho 한국경영정보학회 2005 Information systems review Vol.7 No.2

대한민국의 고속철도통합정보시스템(IRIS) 구축 사업은 2000년 12월 23일부터 2004년 12월 30일까지 4년여에 걸쳐 총 일천여 억 원의 예산과 총인원 10,000M/M 이상의 인력을 투입하고 18,000여 본의 프로그램을 개발한 초대형 프로젝트로서 크게 응용 시스템 개발, 인프라 아키텍처, 그리고 역무자동화 장비 구축 등으로 구분하여 추진되었다. 본 연구에서는 첫째, IRIS의 구축 배경과 전체적인 내용 및 시스템 이미지를 제시한 후 개별 시스템들에 대한 각각의 주요 내용을 제시하였다. 둘째, 성공적인 프로젝트 추진을 위한 프로젝트 관리방법론과 시스템 개발방법론을 적용한 특징 및 내용을 살펴보았다. 마지막으로 IRIS 사업의 주요 포인트와 향후 발전 방향을 논의하였다. 이 프로젝트의 전체적 시스템 구축 및 운영 성과에 대한 평가는 향후 시스템을 운영하면서 좀 더 자세히 분석 및 연구되어야 할 것이다. Integrated Railroad Information System(IRIS) Construction Project is one of the super projects in Korea required to invest over 100 billion won and 10,000 engaged manpower until Dec 30, 2004. Composition of this paper is as follows; firstly, examined individual contents and aspects of IRIS, and studied formality and contents that have been based to project methodology for successful propulsion of project in overall situation of SI project progress until present. Secondly, presented for construction background of IRIS as well as Project Management and Project Development Methodologies. Thirdly, described each characteristic and development substance for individual systems after present whole contents and system image of the system. Finally, presented successful propulsion result of this project and development directions. We presented development example laying stress on IRIS's Project contents and propulsion circumstances. Evaluation about operation results should be analyzed and studied in detail operating system from now on.

청송약수의 탄산과 유해 가능성 물질 존재에 관한 연구

이성호,Lee, Sung-Ho 한국식품영양학회 2021 韓國食品營養學會誌 Vol.34 No.1

The purpose of this study is to measure the levels of eluted and dissolved CO2, and CO, volatile organic substances and radiation composition of Cheongsong mineral water which were collected from November 2019 to July 2020 during the autumn, spring, and summer seasons at collection points located in the upper, middle and lower spring waters. Data of the upper, middle and lower spring waters include the following: the amount of eluted water (average value±standard deviation, mL/min) was 30.07±0.52, 15.03±0.16, 23.73±0.42, and the amount of CO2 gas was 1,000 ppm or more. In addition, there was no detection of CO or total volatile organic substances (TVOC) and the radiation dose was 0.08 to 0.13. μSv/h. A blank test value of 0.08 to 0.10 μSv/h, when compared with the median value, showed a high value of 0.02 μSv/h, and the uranium test results provided by the Cheongsong-gun Office were 0.0118 mg/L (date 2019.06.18) and 0.0091 mg/L (date 2020.06.04.) respectively, which was less than the permission limit of 0.03 mg/L. However, it is believed that further research using more precise devices is needed in order to guarantee the safety and health of the water.

공공기관에서의 서비스 수준 협약(SLA)에 따른 IT 아웃소싱에 관한 연구

이성호,김희완,김동수,Lee, Sung Ho,Kim, Hee Wan,Kim, Dong Soo 서비스사이언스학회 2012 서비스연구 Vol.2 No.1

인터넷의 급속한 발전으로 공공기관 및 민간 기업에서는 정보시스템 유지보수를 위하여 IT 아웃소싱을 도입하고 있으며, 이를 관리하기 위하여 서비스 수준 협약(SLA)을 활용하고 있다. 정보시스템 아웃소싱을 효과적으로 추진하기 위한 방법으로서 SLA가 도입되고 있으나, 아직 공공기관에서는 서비스 수준 협약에 대한 도입이 보편화되거나 그 도입 효과성, 도입성과 등이 입증되고 있다 할 수 없다. 또한 아웃소싱에서 정보시스템의 중요성이 커지는 한편, 정보화 사업의 규모 증가, IT기술의 다양화, 정보시스템 간 상호연계의 확대, 정보시스템 운영 및 유지비용의 증가에 따라 정보시스템 운영을 효율화하고 활용성을 높일 필요성은 점차 커지고 있다. 이에 본 연구에서는 공공기관에서 정보시스템 아웃소싱을 효과적으로 추진하기 위한 방법으로서 서비스 수준 협약(SLA) 도입에 따른 추진방법과 고려사항 등을 살펴보고, SLA 적용을 통해 고객과 IT서비스 조직 상호간 명확한 관리 포인트 확보 및 IT서비스 수준 향상을 위한 IT서비스 마인드와 사전 예방 활동 강화의 효과를 볼 수 있다. With the rapid development of the Internet, public agencies and private companies introduced 'IT outsourcing in order to maintain and repair the information systems. Also they have utilized the SLA in order to manage it. Although IT outsourcing as a way to promote effective SLA are being introduced, the introduction of service level agreements or those introduced universal effectiveness did not demonstrate in the public agencies. The importance of outsourcing in the information systems is growing, but the increase in size of the business information, IT technology diversification, expansion of information between systems interconnection, information system operating and maintenance costs with the increase of information systems to streamline operations, increase the need for versatility is growing gradually. In this paper we investigates IT outsourcing in public agencies as a way to promote effective service level agreement(SLA) with the introduction and consideration, and through the application of SLA mutual customers and IT service organizations make a clear point of management and IT service levels and IT services for improved mind and strengthen the effectiveness of preventive activities can be seen.