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      • KCI등재

        제한속도정보제공장치(SLIF)에 대한 한국 환경 평가 분석

        이화수,심지환,임종현,이홍국,장경진,유송민,Lee, Hwasoo,Sim, Jihwan,Yim, Jonghyun,Lee, Hongguk,Chang, Kyungjin,Yoo, Songmin 한국자동차안전학회 2015 자동차안전학회지 Vol.7 No.4

        Exceeding the speed limit during vehicle driving is a key factor in the severity of lots of road accidents, and SLIF(Speed Limit Information Function) application is in the initial phase in Korea. SLIF helps the drivers to observe a speed limit when they are driving by providing alert and informing the current limit speed information based on external data using camera and/or digital map, for that reason, environmental conditions could be causes of SLIF malfunctions. In this study, design adequacy analysis of SLIF in respect of false recognition as the Korea traffic environment has been performed. As tentative results, road conditions and structure of speed limit sign as well as system performance often caused misrecognition.

      • KCI등재

        속도제한 지원장치에 대한 운전자 인식도 및 도로환경 분석

        이화수,조재호,임종현,이홍국,장경진,유송민,Lee, Hwa Soo,Cho, Jae Ho,Yim, Jong Hyun,Lee, Hong Guk,Chang, Kyung Jin,Yoo, Song Min 한국자동차안전학회 2015 자동차안전학회지 Vol.7 No.3

        This study examined the Korean drivers' acceptance of SAS(Speed Assistance systems) and traffic sign conditions in Korea roads for SLIF(Speed Limit Information Function) that is a part of SAS. Exceeding the speed limit is a factor in the severity of many road accidents and SAS would help the driver to observe a speed limit by warning and/or effectively limiting the speed of the vehicle. SAS are in the initial phase in Korea, Korean drivers could not be familiar with automatical speed limiting during driving, SAS interface design would be considered to be more readily acceptable to the public. And advanced SAS have been introduced onto the market which are able to inform the driver of the current speed limit based on camera and/or digital maps based SLIF. These systems are based on external data using sensors, so environmental conditions are an important factor which could cause malfunction of SLIF functions.

      • KCI등재

        도로 주행평가를 통한 능동 안전장치 연구

        이화수,조재호,임종현,이홍국,장경진,유송민,Lee, Hwa Soo,Cho, Jae Ho,Yim, Jong Hyun,Lee, Hong Guk,Chang, Kyung Jin,Yoo, Song Min 한국자동차안전학회 2015 자동차안전학회지 Vol.7 No.1

        This study examined the drivers' acceptance level of various active safety features with Korean drivers on Seoul urban and city roads. The test vehicle, 2013 Cadillac ATS, was equipped with FCA(Forward Collision Alert), LDW(Lane Departure Warning), SBZA(Side Blind Zone Alert), FRPA(Front/Rear Park Assist), RCTA(Rear Cross Traffic Alert), ACC(Adaptive Cruise Control), and AEB(Autonomous Emergency Braking). Participants had chances to run the tests on those systems in the parking lot accompanied by the 106km long stretch of predetermined route including local road and interurban highway in Seoul and Gyeonggi-do under normal traffic flowing environment. After the test, participants completed a series of questionnaires about the features they experienced. The results revealed that RCTA and SBZA systems received more favourable ratings compared to the other features in avoiding crashes. The respondents preferred sound alerts to haptic ones even though haptic warning methods were better in providing directional information.

      • KCI등재
      • KCI등재

        Mortar Characteristics for Reinforcement of Ancient Tomb Murals Using Oyster Shells

        이화수,유영경,한경순 한국문화재보존과학회 2018 보존과학회지 Vol.34 No.4

        The application of reinforcing agents with hydraulic property and strength development characteristics wasstudied under conditions similar to those of mural-painting mortar made with oyster shell powder. Reinforcement mortarmade with oyster shell powder showed hydraulic properties and strength to supplement the weaknesses of natural hydrauliclime(NHL); this confirmed its possibility as a wall-reinforcing material with enough strength for preserving muralpaintings. Reinforcement mortar 1 showed hydraulic property and general characteristics of lime mortar, such asconsistency and viscosity, as well as lower strength and higher whiteness compared to an NHL product. For Reinforcementmortar 2, the original wall sample characteristics were reflected by mixing more shell produced through calcination; andit showed similar strength to that of Reinforcement mortar 1 as well as high whiteness. In measuring the contraction ratioof reinforcement mortar samples, Reinforcement mortar 1 and 2 showed more stability in property change compared tothe NHL Group.

      • 韓國傳統民俗工藝品의 價値觀과 普及을 爲한 改善方案

        李化洙 淸州大學校 1985 論文集 Vol.18 No.2

        Crafts have various charactaistics among nations, Because they have long tradition, customs and their own peculiarity respectively. Although people say the source of beauty in Korean fine arts lies in line and form, the fine arts of chosun Dynasty shows the core of korean beauty of nature. But just as our history has been hard and insulting in the darkness, so our valuable remains have been looked down upon for a long time. Fortunately, in these days, the works of korean traditional crafts have been recogniqed in anew level, Also, they got to have strong interest in and collection fever for the traditional crafts. As a result, the domestic and foreign buyers consider korean traditional crafts as a good commodity, We must establish diverse policies preparing for it as a kind of exprting goods. Nevertheless, our present industry has the bad habait of imitating and following the foreign mode Therefore, the problem to solve is to pursue our proper beauty and feature and try to develop manufactures based on the sense of times and in crease the international competitive power. In order to meet those requirements, We should establish a world view, awakening of the businessmen and refined will of the designers.

      • 最近 日本의 Design 系列學科의 入試課題 分析

        李化洙 청주대학교 예술문화연구소 1987 淸藝論叢 Vol.1 No.-

        The number of applicants in the field of design in the Colleges of Fine Arts in Korea has been sharply increased in recent years, and Japan is not an exceptional case. Practical skill requiring items in design areas can be classified into dessin and basic design, and when we look into the entrance examinations of the top three colleges of Fine Arts in Japan, we can clearly observe that they have dealt with the examinations very cautiously, have studied them in various ways and have improved them remarkably. How many of us who work at Colleges of Fine Arts can dare say that we have deeply studied the college entrance examinations in fine arts areas? I beleve that their variety of differences and broadness in setting problems and vivid new ideas that I am going to introduce in the following will give us a great stimulus and help, awakening us from long stereotyped habits.

      • 歷代 韓國工藝意匠의 特色

        李化洙 同德女子大學校 1969 同大論叢 Vol.1 No.1

        The Nature of Korean peninsula is clean, calm and peaceful. There are always clean air, high and blue sky. Therefore in the synthesis of theory of Korea Arts Korea beauty generally comes from the nature itself as well as that of other countries. For an example the arts of Yi Dynasty emerged from its beauty of the nature which is well known as highest arts broad in this world. Because, inspite of Yi Dynasty ruled this country only 500 yeares, the result under itsrule are significant such as expaned land, invented famous Korean Alphabet and the unification of both civilization and race of her land. It easily can be regonized that Korean Arts created from her natural beauty, for they were used the natural materials far and wide in the design of her industrial arts such as flowers and birds, and the Ten ever lasting ones. One another facts also reflect it, if we are looking for the colour in this land, our ancestor prefered widely to use of white colour only so that in the late the colour becomes its own noun to be called as the race in white. This custom might come from the purity of Badal(Korean) race who inevitably used daily materials without manufacturing, and from her land's natural beauty. The races who borne on such a clear calm and fine land used to be searched for white colour rather than that of others in order to design the vessels which used widely in their daily life. In fact, the trend of this preference of the colour can be indicated much in the field of the industrial arts. The history of the movement of the arts which shifted from Koryo dynasty celadon porcelain to Yi Dynasty white porcelain can be explaind by the colour which changed from blue to white. In the beginning of this work for the subject I had planned to illustrate Yi Dynasty Arts only. However, the works inevitably were touched both Koryo and Silla Dynasty potlery because of its large volume was contained on this essay. Now I am admitted mayself that the conciousness of the subject have become dim.

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