• Korean Journal of Construction Engineering and Management
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• v.5 no.6 s.22
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• pp.72-79
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• 2004

Critical Path-based project management has been applied to the construction projects with a goal of delivering projects within original costs and time estimates. These current project management methods, rarely make early finishes of construction Projects. In addition, current practices on time management seems not to take advantages of early finishes concepts due to student syndrome and Parkinson's Law, This research study applied the Theory of Constraints(n) in the estimation of construction project duration. While the TOC includes variety of management techniques, in this study, it refers to critical chain that has been used to develop the specific management technique in scheduling. The concept of critical chain is applied to this study to solve the problems associated with the current scheduling method. The efforts focus to solve the p개blems associated with current construction project scheduling methods by adopting both stochastic estimation technique and the concept of schedule buffer,

• Journal of the Korea Institute of Information and Communication Engineering
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• v.14 no.11
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• pp.2521-2526
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• 2010

Immunization information recorded on the Immunization rate in the community to identify the effects of Immunization can be monitored Immunization during an accident can be used as a basis for investigating the cause. Thus, Immunization records, and more efficient management in the private and public institutions have conducted Immunization information systems to manage the development of integrated system has to be. So, the government projects that promote Immunization records were computerized registration. And, in 2009 the development of Immunization registration system was completed. In this paper, we use the information to a variety of Immunization using smart phone design and implement mobile service.

• Journal of KIISE:Information Networking
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• v.27 no.2
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• pp.197-205
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• 2000

This paper proposes and evaluates a scheme which enhances real-time performance on the Ethernet-based residential network where cable length is very short and most of traffic passes through a specific device. The scheme aims at enhancing deadline meet ratio of the real-time traffic, for example, video stream by means of applying the functionalities such as queue discrimination and early packet discard as well as maintaining network load properly. The design includes the description on hardware interfaces along with the software modules such as scheduler, device driver and connection manager. The simulation results via SMPL suggest that the proposed network can be used as a cost-effective residential network. We also measure the permissible bandwidth for non-real-time traffic without degrading the performance of real-time traffic.

• Journal of Intelligence and Information Systems
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• v.15 no.4
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• pp.213-224
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• 2009

This paper describes a real-time scheduling system re-construction project for automated manufacturing at a 300mm wafer fab of Korean semiconductor manufacturing company. During executing this project, for each main operation such as clean, diffusion, deposition, photolithography, and metallization, each adopted scheduling algorithm was developed, and then those were implemented in a real-time scheduling system. In this paper, we focus on the scheduling algorithms and real-time scheduling system for clean and diffusion operations, that is, a serial-process block with the constraint of limited queue time and batch processors. After this project was completed, the automated manufacturing utilizations of clean and diffusion operations became around 91% and 83% respectively, which were about 50% and 10% at the beginning of this project. The automated manufacturing system reduces direct operating costs, increased throughput on the equipments, and suggests continuous and uninterrupted processings.

• Archives of design research
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• v.15 no.1
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• pp.289-298
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• 2002

Under the circumstances of general use of Internet, the construction of on-line system has been made in various fields. We can use and share the informations will other people through the cyber communities and find many ways to promote communication tools. Project Room is a sort of Cyber Space which carry out design project using On-fine system. Users(Designers and Clients) will be able to develop their design project using Internet. The project content may be opened and will be critically contributed the construction of Knowledge-based industry. At the same time, the development of user-friendly tutorial should be fellowed. Tutorial is one of the most important factors to promote Project Room. This study presents the possibility of execution of Cyber community under the construction of Project Room and User-friendly tutorial in the On-line system.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2010.10a
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• pp.681-684
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• 2010

Immunization information recorded on the Immunization rate in the community to identify the effects of immunization can be monitored. Immunization during an accident can be used as a basis for investigating the cause. Thus, immunization records, and more efficient management in the private and public institutions have conducted immunization information systems to manage the development of integrated system has to be. So, the government projects that promote immunization records were computerized registration. And, in 2009 the development of immunization registration system was completed. In this paper, we use the information to a variety of immunization using smart phone design and implement mobile service.

• Journal of Advanced Navigation Technology
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• v.2 no.1
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• pp.61-67
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• 1998

In this paper, we have described the Ramp Activity Coordination Expert System (RACES) which can solve aircraft parking problems. RACES includes a knowledge-based scheduling problem which assigns every daily arriving and departing flight to the gates and remote spots with the domain specific knowledge and heuristics acquired from human experts. RACES processes complex scheduling problem such as dynamic inter-relations among the characteristics of remote spots/gates and aircraft with various other constraints, for example, custome and ground handling factors at an airport. By user-driven modeling for end users and knowledge-driven near optimal scheduling acquired from human experts, RACES can produce parking schedules of aircraft in about 20 seconds for about 400 daily flights, whereas it normally takes about 4 to 5 hours by human experts. Scheduling results in the form of Gantt charts produced by the RACES are also accepted by the domain experts. RACES is also designed to deal with the partial adjustment of the schedule when unexpected events occur. After daily scheduling is completed, the messages for aircraft changes and delay messages are reflected and updated into the schedule according to the knowledge of the domain experts. By analyzing the knowledge model of the domain expert, the reactive scheduling steps are effectively represented as rules and the scenarios of the Graphic User Interfaces (GUI) are designed. Since the modification of the aircraft dispositions such as aircraft changes and cancellations of flights are reflected to the current schedule, the modification should be notified to RACES from the mainframe for the reactive scheduling. The adjustments of the schedule are made semi-automatically by RACES since there are many irregularities in dealing with the partial rescheduling.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10a
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• pp.261-263
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• 1998

IEEE-1394 버스(이하 13394 버스)는 가정용 가전기기와 컴퓨터를 서로연결 할 수 있는 버스로 100Mbps, 200Mbps, 400Mbps의 광대역폭을 제공하고 데이터를 전달하는 방법으로 비동기 (asynchromous)전송뿐만 아니라 등시성(isochronous)전송도 제공한다. 비동기 전송은 시간의 제약이 없고 정확한 전달이 필요한 데이터에 적합한 반면 등시성 전송은 실시간을 요구하고정확한 전잘이 필요없는 데이터에 적합한 특성을 가진다. 1394 버스는 멀티미디어 데이터를 생성하고 편집하는 장치들을 서로 연결시키고 기존의 LAN이 갖는 대역폭의 부족과 프로토콜살의 실시간 전송 방법의 부재 때문에 진정한 의미의 실시간 구현이 어려웠던 화상 전화기, 화상회의 시스템, 비디오편집 시스템을 가능하게 한다. 이러한 멀티미디어 응용 시스템은1)대용향의 멀티미디어 파일 전송을 필요로 하고 화상전화기 혹은 화상회의 시스템은 2) 고속의 파일 전송을 요구하게 된다. 또 두사람이 화상 전화기를 통해 통신을 하면서 여러 가지 문서를 교환하는 경우 최대한 빠르게 파일 전송이 완료될 필요가 있다. 현재 1394버스에서 IP가 올리는 일이 진행중이므로 기존의 FTP는 사용할 수 없다. 게다가 1394 버스에 IP가 올라가더라도 1394 버스 내에서 대용량의 파일을 더 빠르고 정확하게 전달하기 위해서는 IP오버헤드가 없고 1394 버스의 특성을 직접 이용한 새로운 파일 전송 기법이 필요하다. 1394 버스내에서 대용량의 파일을 빠르고 정확하게 전송하는 기법을 찾기 위해서는 비동기 전송과 등기성 전송의 특성을 잘 이해해야하고 각 전송 방법으로 파일을 전송 할 때 생기는 장단점들을 파악해야한다. 본 논문에서는 비동기 전송과 등기성 전송을 이용한 팔일 전송 기법을 각각 제시하고 실험을 통해 이들의 특성을 비교분석하였다.미에서 uronic acid 함량이 두 배 이상으로 나타났다. 흑미의 uronic acid 함량이 가장 많이 용출된 분획은 sodium hydroxide 부분으로서 hemicellulose구조가 polyuronic acid의 형태인 것으로 사료된다. 추출획분의 구성단당은 여러 곡물연구의 보고와 유사하게 glucose, arabinose, xylose 함량이 대체로 높게 나타났다. 점미가 수가용성분에서 goucose대비 용출함량이 고르게 나타나는 경향을 보였고 흑미는 알칼리가용분에서 glucose가 상당량(0.68%) 포함되고 있음을 보여주었고 arabinose(0.68%), xylose(0.05%)도 다른 종류에 비해서 다량 함유한 것으로 나타났다. 흑미는 총식이섬유 함량이 높고 pectic substances, hemicellulose, uronic acid 함량이 높아서 콜레스테롤 저하 등의 효과가 기대되며 고섬유식품으로서 조리 특성 연구가 필요한 것으로 사료된다.리하였다. 얻어진 소견(所見)은 다음과 같았다. 1. 모년령(母年齡), 임신회수(姙娠回數), 임신기간(姙娠其間), 출산시체중등(出産時體重等)의 제요인(諸要因)은 주산기사망(周産基死亡)에 대(對)하여 통계적(統計的)으로 유의(有意)한 영향을 미치고 있어 $25{\sim}29$세(歲)의 연령군에서, 2번째 임신과 2번째의 출산에서 그리고 만삭의 임신 기간에, 출산시체중(出産時體重) $3.50{\sim}3.99kg$사이의 아이에서 그 주산기사망률(周産基死亡率)이 각각 가장 낮았다. 2. 사산(死産)과 초생아사망(初生兒死亡)을 구분(區分)하여 고려해 볼때 사산(死産)은 모성(母性)의 임신력(姙娠歷)과 매우 밀접한 관련이 있는 것으로 사료(思料)되었고 초생아사망(初生兒死亡)은 미숙아(未熟兒)와 이에 관련된 병발이 거의 결정

• Journal of the Korean Institute of Landscape Architecture
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• v.43 no.5
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• pp.100-110
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• 2015

With the trend for the construction of barrier-free living environments in accordance with the ever-increasing external activity of the aging population, multi-culture families and socially disadvantaged, there is also a demand for the facilities improvement at parks for their convenience of use. This study analyzed the possibility of Barrier-Free Certification of an existing open space and defined its prototype renovation plan. This study is intended to help develop Borame Park into a barrier-free park by securing a barrier-free line of movement linking the major facilities sites within the park, improving park facilities lest there should be inconvenience in the use of the major facilities, and a guidance system convenient for use by physically and mentally impaired people. The significance of this study lies in the fact that it diagnosed the possibility of the BF Certification of existing urban parks and established a barrier-free park, which is easy for anyone to use. In the course of doing research on this, this study was able to discover the limitations of the BF Certification system, and its related tasks to be solved in the future as follows: The first thing this study shows is that there is a lack of understanding and awareness of the BF Certification system. Basically, there is a need for giving consideration to the development of a barrier-free living environment from the planning and design phase of a park, but in actuality, an examination of the certification is undertaken at the time of the completion of design and construction, which causes a large loss both time-wise and economically. Second, as evaluative items for the BF Certification of a park, applied are detailed evaluation items that fail to reflect the characteristics of an outdoor space whose natural constraints are large, such as geographical highs and lows and existing trees, plants, etc. Third, guidelines for establishment of a barrier-free park must be created in the light of the locational conditions of the park, followed by improvements of its BF Certification evaluation items.

• Journal of Hospice and Palliative Care
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• v.11 no.3
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• pp.140-146
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• 2008

Purpose: Sooner of later, end-of-life care decision-making will unfold and be settled during the professional lives of medical students. However, there is prevalent ambiguity and uncertainty between the palliative treatment and euthanasia. We conducted this survey to investigate attitudes of medical students towards end-of-life making decisions, and to find out which factors primarily influenced the attitudes. Methods: A study was conducted among medical students at one university, the Republic of Korea. A written questionnaire was sent to all the 1st, 2nd, and 3rd-year medical students. It presented 5 statements on end-of-life decision-making. Students were asked whether they agreed or disagreed with each statement. Results: The response rate was 74.4%, and 267 questionnaires were analyzed. Percentages of agreement with each statements on Voluntary active euthanasia (VAE), Physician assisted suicide (PAS), Withholding life-sustaining management, Withdrawing life-sustaining management, and Terminal sedation (TS) was 37.1%, 21.7%, 58.4%, 60.3%, and 41.6%, respectively. The grade of students, religious activity, and educational experience were determinant factors. Agreement on each statements was higher in the low religious activity group than in the high religious activity group. Agreement on TS was higher among 3rd year students during their clerkship than among 1st and 2nd year students. Age of students and the experience of dying-people care had no significant influence. Conclusion: In end-of-life decision-making, religious and educational factors influenced medical students' attitudes. Especially, the experience of education during clerkship had significant influence on the attitude. Proper teaching on end-of-life decisions should further be considered during medical students' clerkship.