• 제목/요약/키워드: unit factor

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Estimation of water unit factor and water demand of domestic airports (공항용수 원단위 산정 및 용수 사용량 추정방법)

  • Kim, Taeyoung;Kim, Taehwan;Huh, Dong;Park, Heekyung
    • Journal of Korean Society of Water and Wastewater
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    • v.23 no.2
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    • pp.231-239
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    • 2009
  • The purpose of this research is to provide more reliable water unit factors of domestic airports by investigating of general informations related to the domestic airport. The informations of domestic airports such as passengers, settled population of airports, building areas and water amount are investigated to estimate the unit factor of water of domestic airports. The domestic airports are divided into three type such as central airport, position airport and general airport. Through analysis of relationship between water amount and the others, the unit factor of water could be calculated. The water amount of central airport as Incheon international airport and position airports could be estimated by unit factor of settled population. The others could be estimated by unit factor of building area.

Monitor Unit calculation through Excell program (Excell 프로그램을 통한 치료선량(M. U) 계산)

  • Lim, Guang-Chae;Cho, Eun-Ju;Cho, Sun-Hang
    • The Journal of Korean Society for Radiation Therapy
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    • v.11 no.1
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    • pp.28-32
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    • 1999
  • Verifying the treatment value(Monitor Unit) unnecessarily involves too many simple and repetitive calculation processes, that is, individual computation process using the data(PDD value, Scp Factor, SSD Factor, Tray Factor) on the data book. We intend to minimize the time required to check the Monitor Unit through computerized calculation. Using $^{\ast}(multiplication)$, /(division), +(sum), if function, among others, which are present in the Excell program, MS office program, the Monitor Unit was obtainable through A/P value, Scp Factor and PDD value, Wedge Factor. From the verification of the computations of Monitor Unit for 60 patients previously treated, we were able to obtain an error rate of ${\pm}0.028MU$. Computerized calculation of the Monitor Unit could save the burden of Technologist.

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A Study on the Correlation between Atypical Form Factor-based Smartphones and Display-dependent Authentication Methods (비정형 폼 팩터 기반 스마트폰과 디스플레이 의존형 사용자 인증기법의 상관관계 연구)

  • Choi, Dongmin
    • Journal of Korea Multimedia Society
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    • v.24 no.8
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    • pp.1076-1089
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    • 2021
  • Among the currently used knowledge-based authentication methods for smartphones, text and graphic-based authentication methods, such as PIN and pattern methods, use a display unit and a touch function of the display unit for input/output of secret information. Recently released smartphone form factors are trying to transform into various forms, away from the conventional bar and slate types because of the material change of the display unit used in the existing smartphone and the increased flexibility of the display unit. However, as mentioned in the study of D. Choi [1], the structural change of the display unit may directly or indirectly affect the authentication method using the display unit as the main input/output device for confidential information, resulting in unexpected security vulnerabilities. In this paper, we analyze the security vulnerabilities of the current mobile user authentication methods that is applied atypical form factor. According to the analysis results, it seems that the existing display-dependent mobile user authentication methods do not consider emerging security threats at all. Furthermore, it is easily affected by changes in the form factor of smartphones. Finally, we propose countermeasures for security vulnerabilities expected when applying conventional authentication methods to atypical form factor-based smartphones.

Users' Satisfaction on the Dormitory of High School in Jeonju City (고등학교 기숙사 주거시설에 대한 사용자 만족도 - 개인공간 단위실을 중심으로 -)

  • An, Jin-Sook;Choi, Byung-Sook
    • Journal of the Korean housing association
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    • v.18 no.6
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    • pp.93-101
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    • 2007
  • This study was to find out users' satisfaction on the dormitory of high school in Jeonju City and to propose it's physical environmental improvement directions. This was performed by a questionnaire survey method, and the questionnaire was designed by researchers considering relative literatures. Data were collected from 200 students, who had been dwelling 4 high school dormitories in Jeonju City. By analyzing those data, findings were as follows: 1) Users of students were satisfied the whole of their dormitory; facilities, spaces, and living. 2) They were highly concerned about a library and a personal unit space in their dormitory. 3) They needed their personal unit space to be designed bedroom+bathroom type with 2 persons' sharing and be equipped one story bed and desk furniture. Also, they needed improvement on heating & cooling, small space and indoor air quality of unit space. 4) The users' satisfaction on unit space were 2.88, and their satisfaction of the technical factor was 2.71 that was the lowest score in them. And The functional factor was highly effected their satisfaction. 5) The space utility and the space size of functional factor, the soundproof, the heating/ventilation and the indoor quality of technical factor, and the privacy of behavior factor were highly correlative to their satisfaction of unit space.

Calculation of Road Circuity Factors Considering Public Facilities and Road Condition in Rural Area (농촌지역의 공공시설 및 도로 상황을 반영한 도로 우회계수 산정)

  • Jeon, Jeongbae;Park, Meejeong;Yoon, Seongsoo;Suh, Kyo;Kim, Eunja
    • Journal of Korean Society of Rural Planning
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    • v.23 no.2
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    • pp.55-65
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    • 2017
  • This study is to estimate the circuity factors which can be used to assess for public facilities accessibility and analyze traffic in the area. We set the range of the administrative districts by Si Gun Gu unit and Eup Myeon Dong unit (more subdivided unit than Si Gun Gu unit). The average circuity factor in Si Gun Gu unit is 1.364 (maximum 2.953 and minimum 1.711). The region indicated the highest value of circuity factor is wando-gun in jeollanam-do, which area consists of 4 island and is connected to the bridges. Having to use the bridges for using public facilities hinders its accessibility. In the case of Eup Myeon Dong unit, the average circuity factor is 1.353 (maximum 2.950 and minimum 1.154). The region indicated the highest value of circuity factor is buksan-myeon in chuncheon-si, Gangwon-do. This region also has to use bridges for using public facilities because there is the largest lake, called Soyangho. This circuity factor is used to analyze the location of public facilities and assess vulnerability of accessibility. And also the factor can be applied to some policies, such as rural public service planning based on spatial big data.

Estimation of water unit factor and water demand of educational institutions (학교 용수 원단위 산정 및 용수 사용량 추정 방법에 관한 연구)

  • Kim, Tae-young;Huh, Dong;Park, Heekyung
    • Journal of Korean Society of Water and Wastewater
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    • v.23 no.4
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    • pp.481-489
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    • 2009
  • The objective of this research is to provide more reliable and accurate unit factor of water amount by investigating of informations related to various educational institutions such as elementary, middle, high schools and university. In order to estimate the water demand of educational institutions, first of all, the informations such as building area, site area, total school population, and water amount of various educational institutions are investigated to estimate the water unit factor. In this research, we used the total population of students and teachers to estimate the water demand of educational institutions. The results of unit factors of this research are as follows: 1) The elementary school is $0.027983m^3/person{\cdot}day$, 2) middle school: $0.024106m^3/person{\cdot}day$, 3) high school: $0.041415m^3/person{\cdot}day$, 4) specialized high school (science high school and foreign language high school): $0.156938m^3/person{\cdot}day$ and 5) university: $0.033766m^3/person{\cdot}day$. Finally, these water amounts calculated by unit factors were compared with real water amount of educational institutions.

An Analysis of Magnet Unit of Electro-Pneumtic Control Valve Positioner (전공식 콘트롤 밸브 Positioner 용 Magnet Unit의 해석)

  • 김성재;김지원;조순철;정선태;유형근;전찬구;고택범
    • Journal of the Korean Magnetics Society
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    • v.7 no.6
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    • pp.321-326
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    • 1997
  • We analyzed an important part of control valve, magnet unit, which is used to control the fluid. Magnetic circuit which is composed of magnet and yoke is analyzed using finite element method. Then, flux density and coil force were calculated and compared with those of measured. According to the simulation results, the gap field, force constant, and permeance coefficient were 3~5 kG, 27.5 N/A, 22.1, respectively, which corresponded reasonably well with the measured values. We also obtained reluctance factor of 1.1 and fringing factor of 1.4 by simulation.

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Estimation of Pollutant Loadings from Agricultural Small Watershed Using the Unit Loading Factor and Water Quality Monitoring (수질 모니터링과 원단위법을 이용한 농업소유역의 오염부하량 추정)

  • 김상민;강문성;박승우
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.45 no.3
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    • pp.94-102
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    • 2003
  • A hydrologic and water quality monitoring network were established in the Balkan-reservoir watershed, which has 29.79 $km^2$ in size, to analyze the characteristics of pollutant loading from an agricultural small watershed. Soil type, land use, hydrologic soil group, population and livestock were also surveyed to make clear the pollutant sources and to calculate the pollutant loadings by the unit loading factor method which was proposed by the Ministry of Environment. From the 5-year hydrologic monitoring results, sub-watersheds located in the upstream of the reservoirs showed higher average runoff ratio. The calculated daily pollutant loadings by the unit loading factor method from HP#2 sub-watershed in the downstream of Balkan reservoir, were much greater than observed.

A Study of the Friction Factor Unit Considering the Cost of Energy (에너지비용변화에 따른 경제적 단위마찰저항 값에 대한 고찰)

  • Shin, Dong-Shin;Kim, A-In;Lee, Byung-Hyun;Jung, Hyueong-Mok;Lee, Sung-Goo
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.28 no.1
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    • pp.29-34
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    • 2016
  • The friction factor unit was studied to find a more economic alternative compared to the conventional 30 mmAq/m. The pipe and pump for cooling water piping used in a failing were selected, and the friction factor unit was changed to calculate the pipe diameter and the brake shaft power. Based on current electric charges, After the brake shaft power was converted into operational costs based on current electric charges, then an economic analysis was conducted considering that incorporated the initial installation costs and operational costs for the pump. We found that the friction factor unit when using 20 mmAq/m is more economical than that with 30 mmAq/m, if the piping is used for more than 4 years. The small friction factor unit is desirable when the piping is used for quite a long period of time, and the selection of a more economic friction factor unit should considering the period of usage will be important.

Identification Systems of Fake News Contents on Artificial Intelligence & Bigdata

  • KANG, Jangmook;LEE, Sangwon
    • International journal of advanced smart convergence
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    • v.10 no.3
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    • pp.122-130
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    • 2021
  • This study is about an Artificial Intelligence-based fake news identification system and its methods to determine the authenticity of content distributed over the Internet. Among the news we encounter is news that an individual or organization intentionally writes something that is not true to achieve a particular purpose, so-called fake news. In this study, we intend to design a system that uses Artificial Intelligence techniques to identify fake content that exists within the news. The proposed identification model will propose a method of extracting multiple unit factors from the target content. Through this, attempts will be made to classify unit factors into different types. In addition, the design of the preprocessing process will be carried out to parse only the necessary information by analyzing the unit factor. Based on these results, we will design the part where the unit fact is analyzed using the deep learning prediction model as a predetermined unit. The model will also include a design for a database that determines the degree of fake news in the target content and stores the information in the identified unit factor through the analyzed unit factor.