• The Journal of the Convergence on Culture Technology
• /
• v.6 no.4
• /
• pp.331-337
• /
• 2020

The study analyzes the appropriate number of people per a household by applying an evacuation simulation to a 27-floor apartment in accordance with the NFPA 101 standard. The results of the analysis are as follows. First, if there are three people residing in each household, there would be 156 households in total, of which 85.25% were evacuated within 5 minutes. Second, 208 households with 4 residents were evacuated within 5 minutes. Third, if there are five people residing in each household, there would be a total of 260 households and 71.92% of residents were evacuated within 5 minutes. Lastly, 62.82% of the 312 households, each consisting of 6 people, were evacuated within 5 minutes. Measures to reduce evacuation time include determining the width of the stairs according to the number of people indoors, the number of floors in the building, the slope of stairs, and the users' characteristics, the design reflecting the ventilation conditions of the stairs, the installment of outdoor evacuation stairs, two-way stairs, evacuation lift, and the installation of an evacuation safety zone for people to evacuate outside of the building in the middle floors. In addition, measures, such as the mandatory installation of automatic emergency door open-close device to the rooftop, are required to facilitate rooftop evacuation.

• Journal of Korean Society for Geospatial Information Science
• /
• v.24 no.1
• /
• pp.69-80
• /
• 2016

Some studies were conducted for the purpose of minimizing total clearance time for rapid evacuation from the indoor spaces when disaster occurs. Most studies took a long time to calculate the optimal evacuation route that derived minimum evacuation time. For this reason, this study proposes an evacuation route assignment algorithm that can shorten the total clearance time in a short operational time. When lots of exits are in the building, this algorithm can shorten the total clearance time by assigning the appropriate pedestrian traffic volume to each exit and balances each exit-load. The graph theory and greedy algorithm were utilized to assign pedestrian traffic volume to each exit in this study. To verify this algorithm, study used a cellular automata-based evacuation simulator and experimented various occupants distribution in a building structure. As a result, the total clearance time is reduced by using this algorithm, compared to the case of evacuating occupants to the exit within shortest distance. And it was confirmed that the operation takes a short time In a large building structure.

• Proceedings of the KSR Conference
• /
• 2007.05a
• /
• pp.1807-1813
• /
• 2007

The study aims at analyzing an underground station refuge model using EXODUS, one of the refuge simulation programs. The model for simulation is the Daegu Subway (Joongang-ro station). The details of the accident are referred to as the simulation condition the refuge time of traveling from the $3^{rd}$ basement platform to the $1^{st}$ basement is mainly calculated, with passengers numbering 1,000 including 329 at car 1079, 320 at car 1080, and 360 who are not on board. Reference data is used to set up the position of passengers. CFAST fire simulator is also used, and a fast curve among the $t^2$ growth curves, selected as fire growth scenario. The zone is divided into a total of 24 including 18 at the $3^{rd}$ basement platform and 6 at the $2^{nd}$ basement the $1^{st}$ basement is excluded in the fire simulation, however.

• Journal of Digital Convergence
• /
• v.13 no.7
• /
• pp.259-268
• /
• 2015

This research grasped the difference of between the daily medical expenses and the medical expenses reduction rate also the cause of change. In the centre, it was conducted in order to offer the necessary basic data to a recuperation pay management solution's establishment. This research surveyed across the country's urban region 50-general hospital's the infective enteritis disease for a year. Then it was conducted the average daily medical expenses and the average medical expenses reduction rate as a distinguishable survey that is a hospitalization and an outpatient the result is followed. The inpatient daily medical expenses correlated with the total number of medical institution personnel, and the outpatient daily medical expenses correlated with the number of beds.. Inpatient medical expense reduction rate was correlated with number of beds and the total number of medical institution personnel. The interaction between medical institution information and daily medical expenses was found to have a positive (+) effect on the total number of medical institution personnel, as well as the numbers of inpatients vs. outpatient. This research about the medical expense reduction rate and daily medical expense help medical institution's efficient, rational decision making and it will be an important basis of a priority recuperation pay's policy.

• Management & Information Systems Review
• /
• v.35 no.3
• /
• pp.231-247
• /
• 2016

This study, according to the amendment of the Act on External Audit, on the basis of the number of input auditors, the content of auditing, and audit times as additional informations, calculates the average of the samples listed companies with assets of one hundred billion KRW. However, since the actual number of the subject corporations of which asset is 100 billion KRW is small, it is difficult to extract data with reference to this asset size. Therefore, the samples were extended to 50 corporations of which asset is 10% less than 100 billion KRW and other 50 more corporations of which asset is 10% more than 100 billion KRW. As a result, a total of 100 corporations were included as samples. To calculate the average of the audit times, a t-test was performed between the two groups. The result of the t-test showed that there is not a significant difference between the two groups. According to the analytical results of the t-test, the average of the number of input auditors and the average of audit times were calculated with respect to all the 100 samples. A further analysis showed that the average of audit content in the present study was compared with the estimated values in the study of Mun (2016). Although the results of this study may not be the optimal number, they may be used as a fundamental index which may be compared with the audit times and the audit fees in the current audit market where there is not an available reference. In addition, the amendment of the Act on External Audit may enhance the independence of auditors and the transparency of accounting system when compared with the previous system where only the total audit times were disclosed.

• The Science & Technology
• /
• v.34 no.2 s.381
• /
• pp.32-33
• /
• 2001

지난 97년말 설립된 한국과학기술원 뇌과학연구센터는 최근 음성인식 반도체칩을 국내에서는 처음으로 세계에서도 미국과 일본에 이어 세번째 개발에 성공했다. 이번에 개발한 반도체칩은 '화자 독립형'으로, 여러 사람의 음성을 인식할 수 있으며 잡음이 있는 상황에서도 우수한 성능을 나타낸다. 이 연구센터의 연구에 참여하는 인원은 전국에서 박사 1백여명과 석ㆍ박사과정 학생을 포함해 모두 4백25명이나 된다.

• Journal of the Korean Society for Railway
• /
• v.16 no.2
• /
• pp.144-150
• /
• 2013

This paper presents an analysis of door design for the Ui LRT based on experiments to predict doorway flow-time and their analyses results. A similar railway vehicle (from Gimhae LRT) and operational conditions are utilized to assess the doorway flow-time through repetitive experiments. Design of the experiments consists of four scenarios, and the experiments are repeated 39 times in total. We use the results of the experiments to verify the design of doors of Ui LRT (e.g. the required number of doors and their width). Various statistical analyses are carried out for the flow-time with respect to the number of boarding/alighting passengers. We make three category levels of boarding/alighting passengers, and analyze the mean and variance for each category, and then carry out One-Way ANOVA to analyze how the number of boarding/alighting and onboard passengers impact flow-time. The results of this paper can be used for making decisions about doors of the LRT vehicle.

• Journal of Korean Society for Geospatial Information Science
• /
• v.20 no.2
• /
• pp.23-29
• /
• 2012

Existing pedestrian and evacuation models generally seek to find locally optimal solutions for the shortest or the least time paths to exits from individual locations considering pedestrian's characteristics (eg. speed, direction, sex, age, weight and size). These models are not designed to produce globally optimal solutions that reduce the total evacuation time of the entire pedestrians in a building when all of them evacuate at the same time. In this study, we suggest a globally optimal model for indoor pedestrian evacuation to minimize the total evacuation time of occupants in a building considering different distributions of them. We used the genetic algorithm, one of meta-heuristic techniques because minimizing the total evacuation time can not be easily solved by polynomial expressions. We found near-optimal evacuation path and time by expressing varying pedestrians distributions using chromosomes and repeatedly filtering solutions. In order to express and experiment our suggested algorithm, we used CA(cellular automata)-based simulator and applied to different indoor distributions and presented the results.

• Proceedings of the KAIS Fall Conference
• /
• 2009.05a
• /
• pp.219-221
• /
• 2009

청소년 비만관리를 좀더 효율적으로 할 수 있는 방안의 하나로 개개인의 비만관리는 물론 건강관리를 위한 Personal Health Record를 제시코자 한다. 연구 참여한 총인원은 267명이었으나 7명의 설문은 응답이 불성실하여 제외한 총 260명의 데이터를 사용하였다. 비만 관리에 PHR을 활용한다는 응답이 남성은 108명으로 가장 높게 응답한 반면, 여성은 PHR을 활용한다는 응답이 28명으로 "보통"이라고 응답한 29보다 낮게 나타났다. PHR 활용을 보통이라고 대답한 그룹은 일반적인 데모그라픽 요인만 분석한 결과 신장과 체중에서 PHR을 사용하지 않거나, 사용하겠다고 답한 그룹보다 체격이 작은 경향을 나타났다. BMI도 PHR활용도가 보통이라고 한 그룹이 평균 21로 사용하지 않겠다는 그룹 평균 22, 사용하겠다는 그룹 22 보다 낮게 나타났다. 충분한 PHR에 관한 사전 인식도 및 의견 조사를 통해 의료서비스 공급자와 소비자 모두의 요구 사항을 수렴하고 각국 현실에 적합한 맞춤형 PHR system을 개발하고 효율적으로 정착시킬 수 있을 것이다.

• Journal of the Society of Naval Architects of Korea
• /
• v.29 no.1
• /
• pp.173-190
• /
• 1992

Considerable number of offshore platforms have been built in Korean shipyards ever since 1976. Unlike for the cases of building ships, however, negligible efforts have been made to establish planning methodology for building onshore platforms. Severe congestion has been shown in the processes of assemblying modules of platforms. The module which is the upper part of a platform is a steel structure accommodating various types of outfittings and machinaries. The production planned without proper consideration on allocating work loads by trade used to show severe interferences among trades of workers and resulted in delayed completion. In this paper, a method of planning module assembly in consideration of leveling work loads by trade is discussed. A system of planning has been formulated and tested on a exampled case of producing a mix of 72 modules. The test showed a possibility of saving 31% of manpower and trimming 11% of through put time.