• Title/Summary/Keyword: 자료사용권

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An Ergonomic Evaluation of TravTek System (여행자정보시스템의 인간공학적 평가)

  • 권영국
    • Proceedings of the ESK Conference
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    • 1993.04a
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    • pp.111-123
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    • 1993
  • TravTek이란 Travel Technology의 합성어이며, 미래의 여행자들이 차를 사용하여 여행할 때, 보다 편리하고 쾌적한 여행이 될 수 있도록 차에 컴퓨터단말기를 부착하여 현재 주행하고 있는 도로 를 차안에서 화면을 통하여 볼 수 있고, 컴퓨터가 최단경로를 운전자에게 제시하고, 도로의 상황과 여 행정보(즉 호텔, 관공명소, 행사안내등)를 컴퓨터화면으로 나타내고, 그 정보를 컴퓨터음성으로 들려 주는 것등이 TravTek 시스템의 주된 요소들이다. 현재 미국 플로리다주의 올란도시에서 GM회사가 TravTek 시스템을 설치한 차 100대를 가지고 10개의 기관이 합작으로 평가연구중에 있으며, 이 논문에서 다루고자 하는 것은 그중에서 이차의 인간공학적 평가로 제한하고자 한다. 이러한 시스템을 설치한 차 를 타고 여행할 때, 여행자가 과연 얼마나 안락하게 여행할 수 있으며, 도로의 체증현상을 줄이고, 사 고를 예방하며, 차의 설계와 목적이 인간공학적으로 합당한 가를 알아보고자 하는 연구이다. 인간공학적 평가 인자들은 (1) 운전자의 수행도, (2) 사용자 선호도, (3) 사용자 인식, (4) 운행정보등이다. 그리고 컴퓨터음성을 사용하였을 때와 사용하지 않았을 때의 두가지 경우와 (1) 움직이는 컴퓨터 지도를 사용하 였을 때, (2) 단순화 한 도로안내를 사용하였을 때, (3) 컴퓨터 지도를 사용하지 않았을 경우(종이지도 사용)에 관해 위의 4가지 인간공학적 인자들을 평가하고자 한다. 이 연구는 아직도 진행중이라 발표하 고자 하는 논문역시 현재까지의 연구결과를 토대로 발표하는 것이므로 완전한 결론을 내릴 수는 없고, 진행과정의 내용과 토의사항과 잠정적인 결론을 제시하고자 한다.기서 사용된 아이콘에 대해서만 타당한 것으로 이것을 모든 아이콘에 대해 일반화시키기는 어려우나 이후에 행해질 Icon-based User Interface 분야의 많은 연구들의 기초가 될 것이다. 더불어 아이콘과 관련된 많은 요인들(문화적 영향, 아이콘 색깔, 크기, 아이콘의 위치등이 인식에 미치는 영향)에 대해서도 연구가 행해져야 할 것이다. 확인하고 각각의 기능을 분명히 했다.가 수월하게 하였고 메모리를 동적으로 관리할 수 있게 하였다. 또한 기존의 smpl에 디버깅용 함수 및 설비(facility) 제어용 함수를 추가하여 시뮬레이션 프로그램 작성을 용이하게 하였다. 예를 들면 who_server(), who_queue(), pop_Q(), push_Q(), pop_server(), push_server(), we(), wf(), printfct() 같은 함수들이다. 또한 동시에 발생되는 사건들의 순서를 조종하기 위해, 동시에 발생할 수 있는 각각의 사건에 우선순위를 두어 이 우선 순위에 의하여 사건 리스트(event list)에서 자동적으로 사건들의 순서가 결정되도록 확장하였으며, 설비 제어방식에 있어서도 FIFO, LIFO, 우선 순위 방식등을 선택할 수 있도록 확장하였다. SIMPLE는 자료구조 및 프로그램이 공개되어 있으므로 프로그래머가 원하는 기능을 쉽게 추가할 수 있는 장점도 있다. 아울러 SMPLE에서 새로이 추가된 자료구조와 함수 및 설비제어 방식등을 활용하여 실제 중형급 시스템에 대한 시뮬레이션 구현과 시스템 분석의 예를 보인다._3$", chain segment, with the activation energy of carriers from the shal

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The Effect of Collectivism on Anxiety Perception and Mental Health in Youth Unemployment (집합주의 문화가 청년실업에 대한 불안 지각 및 정신건강에 미치는 영향)

  • Minjung Cha;So Young Park;Hyun-joo Song;Younhee Roh
    • Korean Journal of Culture and Social Issue
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    • v.18 no.1
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    • pp.27-51
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    • 2012
  • The current paper examines the effect of collectivism on perceived youth unemployment anxiety as well as mental health and the mediating effects of employment self-efficacy; self-esteem; and the frequency of upward and downward social comparisons. In Study 1, data were gathered from 179 university students in upper-ranking schools and middle-ranking schools in Seoul, Korea. Our results indicated that (a) collectivism was positively correlated to, and also an significant predictor of perceived youth unemployment anxiety and mental health and (b) employment self-efficacy and self-esteem had mediating effects on the relationship between collectivism and perceived youth unemployment anxiety and mental health. In Study 2, data were gathered from 118 students in upper-ranking schools in Seoul, Korea. Our results indicated that (c) upward social comparison had mediating effects on the relationship between collectivism and perceived youth unemployment anxiety and mental health, while downward social comparison did not. The findings are discussed in terms of their general implications for understanding the importance of culture in employment seeking settings.

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A Study on Improving Reliability of Benefit Estimation Based on User Equilibrium Traffic Assignment Results (이용자 균형 통행배정 결과를 이용한 편익추정의 안정성 제고방안 연구)

  • Kim, Jae-Yeong;Son, Ui-Yeong
    • Journal of Korean Society of Transportation
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    • v.25 no.6
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    • pp.19-31
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    • 2007
  • When estimating the benefits from an investment project in the transportation sector, errors caused by many factors may exist. This study focuses on user equilibrium traffic assignment methods and stopping criteria. According to previous studies, when using a user equilibrium assignment model, the benefits of travel time savings can be effected by the relative gap value. As the stopping criteria decreases, the time needed for traffic assignment increases, so that lowering the criteria cannot be the best solution. Therefore, an effort is necessary to reduce this change rate and thus improve reliability. This paper considers three methods: reducing the links subject to benefit calculation, extracting sub-area O/D tables and networks, and applying the mean value of successive traffic assignment results. The results of the analysis show that the method using the mean value of five results is more proper than the other methods. Using the sub-area analysis method, if the study area is small the benefits of a project might be over- or under-estimated. This paper used a nationwide O/D table and network at peak time as a case study. The resulting patterns can differ according to basic data to be used in analysis. So further analysis using the data from metropolitan areas are needed.

Analysis on Passenger Car Travel Characteristics by Household Type (자가용 승용차의 가구그룹별 통행특성 차이에 관한 연구)

  • Joo, Jin Ho;Yeon, Ji Youn;Jang, Dong Ik
    • Journal of Korean Society of Transportation
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    • v.32 no.4
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    • pp.347-356
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    • 2014
  • Passenger cars occupy about 74% among registered vehicles in Korea and the ratio of transportation mode sharing is approximately 60% in the passenger transport part. However, there is no statistics related to travel characteristics of passenger cars, and official statistics are estimated from O/D travel data. Thus, National Transportation DataBase Center in KOTI has attempted to construct various statistical data through Korea Vehicle Use Survey. Based on these data, Analysis of Variance (ANOVA) was conducted to investigate the differences in travel characteristics of each analysis group. As a result, all of the explanatory variables(weekday vs. weekend, metropolitan area vs. non-metropolitan area, male vs. female, commute time vs. other time, routine purpose vs. non-routine purpose) were found to be different across households. In addition, travel distances per trip of weekday, metropolitan area, male, commute time, and non-routine purpose are longer than the opposite variables. Also, the trip distances of small size(1 to 2 persons) households are shorter compared to large size(more than 5 persons) households.

A Rainfall Forecasting Model for the Ungaged Point of Meteorological Data (기상 자료 미계측 지점의 강우 예보 모형)

  • Lee, Jae Hyoung;Jeon, Ir Kweon
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.14 no.2
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    • pp.307-316
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    • 1994
  • The rainfall forecasting model of the short term is improved at the point where meterological data is not gaged. In this study, the adopted model is based on the assumptions for simulation model of rainfall process, meteorological homogeneousness, prediction and estimation of meteorological data. A Kalman Filter technique is used for rainfall forecasting. In the existing models, the equation of the model is non-linear type with regard to rainfall rate, because hydrometer size distribution (HSD) depends on rainfall intensity. The equation is linearized about rainfall rate as HSD is formulated by the function of the water storage in the cloud. And meteorological input variables are predicted by emprical model. It is applied to the storm events over Taech'ong Dam area. The results show that root mean square error between the forecasted and the observed rainfall intensity is varing from 0.3 to 1.01 mm/hr. It is suggested that the assumptions of this study be reasonable and our model is useful for the short term rainfall forecasting at the ungaged point of the meteorological data.

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Developing Subject Headings for Children's Picture Books based on A to Zoo (어린이 그림책을 위한 주제명표 개발 연구: 『A to Zoo』를 바탕으로)

  • Park, Ziyoung
    • Journal of the Korean Society for information Management
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    • v.29 no.4
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    • pp.251-271
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    • 2012
  • Subject headings support the effective access of children's picture books. However, it is difficult to select subject terms from titles or table of contents in children's picture books because of their relatively little textual information. Therefore, it is necessary to assign subject terms to each picture book. However, it is not adequate to use general subject headings because the types and levels of general subject headings are different from special subject headings for the children's materials. For this reason, this study aims to develop subject headings for children's picture books. The subject terms in A to Zoo were selected, and the selected terms were translated into Korean and modified for the Korean culture and language. Other reference books, such as Elementary Korean Dictionary, were also used to determine adequate terms for children. The resulting subject headings were assigned to the recommended picture books for children and used to search by subject, browse, and recommend books.

Prediction of Swell-like High Waves Using Observed Data on the East Coast of Korea (관측치를 활용한 동해안 너울성 고파 예측)

  • Lee, Changhoon;Ahn, Suk Jin;Lee, Byeong Wook;Kim, Shin Woong;Kwon, Seok Jae
    • Journal of Korean Society of Coastal and Ocean Engineers
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    • v.26 no.3
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    • pp.149-159
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    • 2014
  • In this study, we develop an algorithm to predict swell-like high waves on the east coast of Korea using the directional wave gauge which was installed near Sokcho. Using the numerical wave model SWAN, we estimate wave data in open sea from the wave data collected by using the directional wave gauge. Then, using the wave ray method and SWAN model with the open-sea wave data as offshore boundary conditions, we predict the swell-like high waves at several major points on the east coast of Korea. We verify the prediction methods with the SWAN and wave ray methods by comparing predicted data against measured one at Wangdolcho. We can improve the prediction of the swell-like high waves in the east sea of Korea using both the real-time wave measurement system and the present prediction algorithm.

A Study on the Application of GSIS for the Simulation of Stream Water Quality (하천수질모의를 위한 GSIS적용 연구)

  • 최연웅;성동권;전형섭;조기성
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.19 no.3
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    • pp.253-261
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    • 2001
  • Nowadays, various water quality prediction models have been studied, then these models can support the method which evaluate the effect of various alternative water quality management by simulation without experimentation. But, It is necessary to create complex input data file for applying these water quality model and even though the appropriate result is extracted, it is impossible to use as decision making data effectively because of the limitation of expression of model itself. As this study is about the stream water quality modeling, for overcoming the model's above limitation, by developing an interface which can calculate the pollutant load of watershed, I could create a input data file and visualize the simulation result so that I was going to integrate water quality model and GSIS using Flexible coupling applied to GSIS in the pre-process and post-process on model. The QUAL2E model, used in this study, is verified by stream water quality model in previous various results of study and has many examples through previous study, because that is appropriate to water quality model, especially in Korea, and comparatively accurate and their usage is quite simple.

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Characteristics of Slope Failure Due to Local Downpour and Slope Stability Analysis with Changing Soil Depth and Groundwater Level (집중호우시 사면 붕괴의 특성 및 토층 심도와 지하수변동에 따른 사면 안정성 해석)

  • Baek Yong;Kwon O-Il;Kim Seong-Hyun;Koo Ho-Bon
    • The Journal of Engineering Geology
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    • v.15 no.1
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    • pp.57-66
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    • 2005
  • The failure of cut slope and landslide sometimes come from a local downpour within a short duration in Korea. Especially, most of recent downpour converged upon a limited region and seemed the characteristics of guerilla. Characteristics of slopes failed due to local downpour are analyzed. failure mode is also analyzed with respect to the depth of soil layers and the change of groundwater level. To blow the influence factors of the slope stability during local downpour, the authors conducted field survey for failed slopes and tried to make a comparative study of 1,372 cut slope data distributed in the national road. FLAC-SLOPE(ITASCA Co.) is used to analyze slope stability with changing depth of soil layers and groundwater level. The result shows that the failed types of domestic slopes during local downpour are mainly shallow collapse and landslide. The change of soil depth and groundwater level have influenced on the stability of slopes.

Determinate Real-Time Position and Attitude using GPS/INS/AT for Real-time Aerial Monitoring System (실시간 공중 자료획득 시스템을 위한 GPS/INS/AT를 이용한 실시간 위치/자세 결정)

  • Han, Joong-Hee;Kwon, Jay-Hyoun;Lee, Im-Pyeong;Choi, Kyoung-Ah
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.28 no.5
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    • pp.531-537
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    • 2010
  • Real-time Aerial Monitoring System performs the rapid mapping in an emergency situation so that the geoinformation could be constructed in near real time. In this system, the position and attitude information from GPS/INS integration algorithm is used to perform the aerial triangulation(AT) without GCPs. Therefore, if we obtain Exterior Orientation(EO) estimates from AT sequentially, EO are used as the measurements in the Kalman filter. In this study, we simulate the GPS/IMS/Image data for an UAV-based aerial monitoring system and compare the GPS/INS/AT with and without from AT. Comparative analysis showed that result from the GPS/INS/AT with EO update is more accurate than without the update. However, when the vehicle turns, the position error significantly increases which need more analysis in the future.