• 한국건설관리학회논문집
• /
• 제11권1호
• /
• pp.160-169
• /
• 2010

내역서를 기반으로 하는 국내 공공공사의 기성 산정 방법은 작업진도의 산출과 무관한 기성고 산정과 많은 양의 서류작성과 복잡한 절차 등의 많은 문제점이 있다. 국가계약법에서 정식과 약식 기성 산정 방법으로 구분되며, 이중에서 약식 기성 산정 방법은 절차와 신청서류를 간소화하여 이와 같은 문제점을 상당 부분 해결 가능하지만 이의 활용이 미비한 실정이다. 본 연구에서는 작업분류체계의 수립과 이를 기반으로 선정된 대표공종의 진도율을 이용하여 기성을 산정하는 방법을 제안하였으며, 자연형 하천공사의 실적공사 데이터를 수집하여 이를 적용을 통한 국내 공공공사의 기성 산정 방법과의 비교를 통해, 기성 산정을 위한 관리항목의 감소로 인한 업무 부담의 감소와 빠르고 효과적인 기성 산정을 통한 업무효율의 증가 등 그 효율성을 검증하였다. 이러한 기성 산정 방법론의 도입은 기존 방법의 문제점 해결을 통한 업무효율의 증가뿐만 아니라 향후 공공공사의 사업관리에 있어서 그 효율성이 검증된 공정-공사비 통합관리의 기반을 다지는 데 있어 큰 의미가 있다.

• Journal of Information Science Theory and Practice
• /
• 제7권3호
• /
• pp.6-20
• /
• 2019

Learning analytics, or educational data mining, is an emerging field that applies data mining methods and tools for the exploitation of data coming from educational environments. Learning management systems, like Moodle, offer large amounts of data concerning students' activity, performance, behavior, and interaction with their peers and their tutors. The analysis of these data can be elaborated to make decisions that will assist stakeholders (students, faculty, and administration) to elevate the learning process in higher education. In this work, the power of Excel is exploited to analyze data in Moodle, utilizing an e-learning course developed for enhancing the information computer technology skills of school teachers in primary and secondary education in Greece. Moodle log files are appropriately manipulated in order to trace daily and weekly activity of the learners concerning distribution of access to resources, forum participation, and quizzes and assignments submission. Learners' activity was visualized for every hour of the day and for every day of the week. The visualization of access to every activity or resource during the course is also obtained. In this fashion teachers can schedule online synchronous lectures or discussions more effectively in order to maximize the learners' participation. Results depict the interest of learners for each structural component, their dedication to the course, their participation in the fora, and how it affects the submission of quizzes and assignments. Instructional designers may take advice and redesign the course according to the popularity of the educational material and learners' dedication. Moreover, the final grade of the learners is predicted according to their previous grades using multiple linear regression and sensitivity analysis. These outcomes can be suitably exploited in order for instructors to improve the design of their courses, faculty to alter their educational methodology, and administration to make decisions that will improve the educational services provided.

• 기록학연구
• /
• 제9호
• /
• pp.41-73
• /
• 2004

This article provides the base in relation to the classification system of public records of Japan and Tiwan which the original order of the classification system of public records of Government-General of Chosun is reconstructed and the efficient classification system is prepared. The classification system of public records at the period of Meiji(明治) in Japan was classified two forms, one is function-based classification, the other is organization-based classification. Each ministry(省) was fundamentally based In function-based classification and organization-based classification, adopted them in changed forms as its condition and situation had been changed. Government-General of Tiwan adopted Japan's archival management system and put its classification system and life schedule In operation. The classification system of Government-General of Tiwan adopted function-based classification of the ministry of foreign affairs in Japan, changed its forms as the organization and business activity were transformed. As a result of arrangement and analysis of examples for the classification of public records of Government-General of Chosun from 1910' to the middle area of 1930', the classification of public records of Government-General of Chosun was constructed on level order; 'organization of ministry(部) or department(局)--business activity of ministry or department--low function of business activity of ministry or department'. But this classification system had two sides, flexible and unstable in that the classification system had exeptional parts and the breadth of items was changed greatly. The classification system of Government-General of Chosun, which had adopted organization-based classification of the ministry of home affairs in Japan, result in expanding the breadth of items and causing great change of items for the organization and business activity were vast and its change was very great.

• 한국건설관리학회논문집
• /
• 제6권4호
• /
• pp.71-79
• /
• 2005

건설 프로젝트가 점차 대형화, 전문화, 복잡화되어감에 따라 건설공사에서의 리스크 요인과 불확실성 요인이 증가하고 있다. 따라서 이와 같은 건설 사업 과정에서 발생하는 불확실한 요인을 미리 파악하고, 이에 대처하는 것은 프로젝트 성공을 위해 매우 중요한 요소이다. 따라서 본 연구에서는 전체 공종 중 공기, 공사비, 민원발생 등으로 인해 공사에 크게 영향을 미치며, 후속공정에 미치는 영향이 큰 커튼월 공사를 시공 프로세스 검토를 통한 리스크 인자의 적출을 통해 구체적인 리스크 인자의 구체적인 대응방안을 제시하여 실무에 직접적으로 접근할수 있도록 하였다. 이러한 리스크 인자의 적출은 정량적인 리스크의 분석을 가능하게 하고, 이에 따라 각각의 공종에서 발생하는 리스크 인자들의 우선순위를 결정할 수 있으며 이를 바탕으로 제시한 공정 리스크 관리 도구를 통하여 현장마다 경험과 지식의 정도가 다른 실무자로 하여금 업무를 수행함에 있어서 사전에 리스크를 인지할 수 있으며 리스크가 발생했을 때 신속하게 대응할 수 있고 그러한 리스크를 최소화할 수 있는 업무 지침을 제공하는 역할을 하게 될 것이다.

• 한국산학기술학회논문지
• /
• 제10권6호
• /
• pp.1337-1345
• /
• 2009

철도 네트워크에서는 정해진 선로를 운행하는 열차의 특성상 일부 열차의 지연이 다른 열차의 스케줄에 영향을 미쳐 열차 간 경합이 발생할 수 있고, 이는 전체 네트워크에 파급되어 혼선을 유발할 수 있다. 따라서 혼선된 열차 시각표를 빠른 시간 내에 재수립하는 것은 매우 중요한 문제가 된다. 이 문제는 동일 방향으로 진행 중인 열차가 선행열차를 추월하거나 다수의 노선이 하나로 수렴하는 경우에 열차의 진행 순서를 정하는 등의 문제로 이해될 수 있다. 그러나 이 문제를 위한 국내의 연구는 활발하지 못하며, 특히 일반열차와 고속열차(KTX)가 하나의 선로를 공유함으로써 두 열차 간의 연계가 필요한 한국 철도의 복잡한 현실까지 고려하지 못하고 있는 실정이다. 이에 본 연구에서는 열차 지연시간의 합을 최소화할 수 있는 최적화 모형을 제시하고자 한다. 제시된 모형을 일반열차와 KTX 열차가 혼재하는 경부선 복선 구간에 적용한 결과 열차 환승을 고려한 열차 시각표 재수립이 가능함을 확인하였다.

• Safety and Health at Work
• /
• 제7권1호
• /
• pp.72-77
• /
• 2016

Background: This study aimed to determine the prevalence and factors related to needle stick injuries (NSIs) and to assess related safety measures among a sample of Iranian nurses. Methods: In this cross-sectional study, a random sample of 168 registered active nurses was selected from different wards of one of the hospitals of Shiraz University of Medical Sciences (SUMS). Data were collected by an anonymous questionnaire and a checklist based observational method among the 168 registered active nurses. Results: The prevalence of NSIs in the total of work experience and the last year was 76% and 54%, respectively. Hollow-bore needles were the most common devices involved in the injuries (85.5%). The majority of NSIs occurred in the morning shift (57.8%) and the most common activity leading to NSIs was recapping needles (41.4%). The rate of underreporting NSIs was 60.2% and the major reasons for not reporting the NSIs were heavy clinical schedule (46.7%) and perception of low risk of infection (37.7%). A statistically significant relationship was found between the occurrence of NSIs and sex, hours worked/week, and frequency of shifts/month. Conclusion: The study showed a high prevalence of NSIs among nurses. Supportive measures such as improving injection practices, modification of working schedule, planning training programs targeted at using personal protective equipment, and providing an adequate number of safety facilities such as puncture resistant disposal containers and engineered safe devices are essential for the effective prevention of NSI incidents among the studied nurses.

• 대한기계학회논문집A
• /
• 제22권1호
• /
• pp.90-101
• /
• 1998

This paper presents a scheduling method that uses Petri net modeling and heuristic search to handle the tool setup. In manufacturing systems, a tool is attached to a particular machine to process a particular operation. The activity to attach a tool to a particular machine and detach the tool from the machine requires time. The processing time of operations varies according to the attached tool and the machine used. The method proposed in this paper uses Petri net to model these characteristics and applies a search algorithm to the reachability graph of the Petri net model to generate an optimal or near-optimal schedule. New heuristic functions are developed for efficient search. The experimental results that show the effectiveness of the proposed method are presented.

• 대한산업공학회지
• /
• 제14권1호
• /
• pp.119-131
• /
• 1988

Vehicle Scheduling Problem (VSP) is a generic name given to a whole class of problems involving the visiting of "stations" by "vehicles," where a time is associated with each activity. The studies performed to date have the common feature of a single objective while satisfying a set of restrictions and known customer supplies or demands. However, VSPs may involve relevant multiple objectives and probabilistic supplies or demands at stations, creating multicriteria stochastic VSPs. This paper proposes a heuristic algorithm based on goal programming approach to schedule the most satisfactory vehicle routes of a bicriteria VSP with probabilistic supplies at stations. The two relevant objectives are the minimization of the expected travel distance of vehicles and the minimization of the due time violation for collection service at stations by vehicles. The algorithm developed consists of three major stages. In the first stage, an artificial capacity of vehicle is determined, on the basis of decision maker's subjective estimates. The second one clusters a set of stations into subsets by applying an efficient cluster method developed. In the third one, the stations in each subset are scheduled by applying an iterative goal programming heuristic procedure to each cluster.

• 대한기계학회:학술대회논문집
• /
• 대한기계학회 2001년도 춘계학술대회논문집C
• /
• pp.357-360
• /
• 2001

Design Engineering Group, LG Production engineering Research Center has been developing The Integrated Design Environment enabling engineering design task with ease, speedy and accurate for several years targeting the design departments in LG Electronics. $ezDesign^{(R)}$ System is consisted by Engineering Database Management, Engineering Knowledge Management, 3D Design Application, Design Evaluation Method and Project Management. Engineering Database Management manage the design information effectively. Engineering Knowledge Management takes control of design knowledge from design engineering activity systematically. It is possible for the engineering designer to utilized 3D CAD easily by 3D Design Application. Design Evaluation Method can evaluate several design alternatives synthetically. In Project management System, Designer can simulate the project schedule and cost. In this report, We will introduce how design process can be innovated by way of $ezDesign^{(R)}$ System.

• 한국방사성폐기물학회:학술대회논문집
• /
• 한국방사성폐기물학회 2004년도 Proceedings of the 4th Korea-China Joint Workshop on Nuclear Waste Management
• /
• pp.96-105
• /
• 2004

The decommissioning project of the KRR 1 & 2 was started in January 1997. The actual decommissioning activity was started at the RI production facility and was finished at the end of 2002. The dismantling works of all components including the reactor structure of the KRR-2 was started in January, 2003 and will be carried out for 2 years till the end of 2004. The project schedule is estimated to delay for 4∼5 months beyond the original plan because of delaying on the cutting of thermal column nose and removal of the graphite bricks, but it may be caught up during the removal working of concrete from biological shielding structure. This paper summarizes the general status of the KRR 1 & 2 and decommissioning activities.