• Title/Summary/Keyword: running-in

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The Effectiveness Test of Improved Wheel Profile by Using Microphones (마이크로폰을 이용한 개선된 차륜답면 효과 시험)

  • Moon Kyeong-Ho;Hur Hyun-Moo;Kim Jae-Chul
    • Proceedings of the KSR Conference
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    • 2004.06a
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    • pp.664-669
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    • 2004
  • In rolling stock, wheels are one of the most important components to run on the track in safety. Especially, it is important that wheel profile cause the variation of dynamic characteristics and running safety. The purpose of this paper is to propose the wheel profile and to know the effectiveness of improved wheel profile by using microphones. We also performed analysis of running safety to know application of improved wheel profile before the test. In result, the improved wheel profile was stable in running safety and noise level was reduced.

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Design Development of Outdoor Wear for Trail Running (트레일 러닝을 위한 아웃도어 웨어 디자인 개발)

  • Kim, Yoon
    • Journal of the Korean Society of Costume
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    • v.65 no.3
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    • pp.151-166
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    • 2015
  • This research aims to study the needs of the trail runners as trail running has become a popular outdoor activity, and give suggestions for high functional outdoor menswear design that can satisfy the needs of the highly demanding taste of runners. The design development is as follows: 1) The design had to be made of lightweight material and be easily packable in all situations, and 2) we also considered the ergonomic and compact fit for activity, 3) the functional location of high functional fabric, 4) the reflective use and layering system giving a wide range of outdoor workout time and 5) the trend in 2016 S/S active sports and outdoor wear. Based on the above elements, the men's outdoor wear design has been developed for trail running in spring and summer. The design development includes a total of 7 items. The design focused on lightweight, availability of packaging, "comfortability" and freshness in activity, functional suitability of location of highly functional materials and the layering system to protect body temperature under the changing environment. In particular, the layering system was implemented to provide ventilation, and it was done in body parts that released the most body heat. Therefore, mesh materials were actively used on the side panel, sleeves and center of the back piece for necessary sweat emission without any problems and ventilation for trail running.

Identification of Running Vehicle Properties by Vertical Stiffener Response of Steel Girder Bridge (강 거더교의 수직보강재 응답을 이용한 주행차량의 특성 추정)

  • Lee, Hee-Hyun;Jeon, Jun-Chang;Jung, Min-Sun;Kyung, Kab-Soo
    • Journal of the Korean Society of Safety
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    • v.27 no.1
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    • pp.86-95
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    • 2012
  • The BWIM(Bridge Weigh-In-Motion) is a technology to identify vehicle properties, such as weight, speed, axle spacing and running lane, passing over a bridge by using dynamic response of bridge member. Such information will be used for assessing durability and establishing a maintenance strategy of roadway structures. In this paper, as a first step for developing BWIM system, analytical and experimental studies were conducted in order to verify whether the response of vertical stiffener in steel girder bridge can be used to identify vehicle properties running on the bridge. It was known from this study that such vehicle information could be estimated reasonably by using strain time history curve of a vertical stiffener due to running vehicles. It is because the effect of each axle-load of vehicle appears definitely in the curve. However, as the magnitude of strain of vertical stiffener is effected by running pattern of vehicles, further study is necessary to reduce error when estimating vehicle weight.

Survey on Running Smoking , No - Smoking Area in Restaurants in Seoul (서울지역 음식점의 흡연 , 금연구역 설치현황 조사)

  • Lee, Ae-Rang
    • Journal of the Korean Dietetic Association
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    • v.7 no.1
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    • pp.50-55
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    • 2001
  • Running smoking, no-smoking area in restaurants(n=546) in 25 districts in Seoul area was surveyed and evaluated. No-smoking restaurants were evaluated as A(2.0 points). Restaurants running no-smoking area with guidance to the customers were evaluated as B(1.7 points), and those without guidance as C(1.4 points). In case of the distinction of smoking or no-smoking area are not clear, it was evaluated as D(1.1 points). Restaurants which are not running no-smoking area were scored E(0.8 points). Western style restaurants scored average of 1.55points, which was significantly higher than that of Korean, Chinese or Japanese style ones(average of 1.24~1.27 points). The highest mean score for restaurant 1.625 points in Songpa-gu(district).

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The Contact Fatigue Life Analysis of Transmission Gear considering Running-in (길들이기 과정을 고려한 변속기용 기어의 접촉피로 수명 해석)

  • Moon, Kil-Hwan;Lee, Sang-Don;Cho, Yong-Joo
    • Transactions of the Korean Society of Automotive Engineers
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    • v.15 no.5
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    • pp.133-138
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    • 2007
  • Surface pitting is a major failure mode for gears. The contact fatigue life analysis of transmission gear considering running-in process is presented in this paper. Surface roughness change of rolling test is used in a life analysis. Contact stresses are obtained by contact analysis of a semi-infinite solid based on the use of influence functions; the subsurface stress field is obtained using rectangular patch solutions. Mesoscopic multiaxial fatigue criterion which can yield satisfactory results for non-proportional loading is then applied to predict fatigue damage. Suitable counting method and damage rule were used to calculate the fatigue life of random loading caused by rough surface. The life analysis considering running-in is in good agreement with the experimental results.

Train Performance Improvement Simulation of Light Rail Transit by TPS (TPS를 이용한 경량전철의 주행 성능 향상 방안 시뮬레이션)

  • Lee, Dong-Hyung;Koo, Dong-Hoe;Lee, Kyung-Chul
    • Proceedings of the KSR Conference
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    • 2006.11b
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    • pp.288-293
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    • 2006
  • In this work, the characteristics and the improving method of train performance of Korean rubber-tired AGT system(K-AGT) and Urban MAGLEV system are evaluated by using Train Performance Simulation(TPS). The train performance characteristics of K-AGT were analysed according to the change of maximum running speed and those of Urban MAGLEV were evaluated according to a vehicle weight variation. In the result of simulation in virtual line, the scheduled speed and the running time of K-AGT system have no difference with Urban MAGLEV system if the maximum running speed is equal. But the energy consumption of Urban MAGLEV system is more than that of K-AGT system. The analyses showed that in case of a 20 percent vehicle weight reduction of Urban MAGLEV system, the energy consumption per person is similar with the K-AGT system. The Urban MAGLEV system is more efficient in long travel distance condition than in short running distance condition in the aspect of train performance.

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한국의 해외 기술도입 보상구조의 결정에 관한 연구

  • Park, Hyeon-U
    • Proceedings of the Technology Innovation Conference
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    • 2004.06a
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    • pp.151-169
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    • 2004
  • Studies on compensation structures of international technology licensing show that the level of intellectual property protection in the host market and the favorableness of the host country's economic environment are positively related to the use of running royalty-based compensation structure. Lump-sum fee or fixed royalty compensation is more likely to be used in the introduction and decline stages of the technology life cycle, and running royalty compensation in the growth stage. The international experience and the size of the licensor company are positively related to the use of running royalty. In this theoretical context, this paper analyzes the compensation structures of technology import in Korea. The paper uses the officially reported data to analyze the compensation structures. It analyzes the characteristics of the compensation structures in terms of fixed royalty and running royalty by licensor country, group of licensor countries and size of licensee companies.

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fast running FIR filter structure based on Wavelet adaptive algorithm for computational complexity (웨이블렛 기반 적응 알고리즘의 계산량 감소에 적합한 Fast running FIR filter에 관한 연구)

  • Lee, Jae-Kyun;Lee, Chae-Wook
    • Proceedings of the Korea Institute of Convergence Signal Processing
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    • 2005.11a
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    • pp.250-255
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    • 2005
  • In this paper, we propose a new fast running FIR filter structure that improves the convergence speed of adaptive signal processing and reduces the computational complexity. The proposed filter is applied to wavelet based adaptive algorithm. Actually we compared the performance of the proposed algorithm with other algorithm using computer simulation of adaptive noise canceler based on synthesis speech. As the result, the frequency domain algorithm is prefer than the existent time domain. we analyzed the Wavelet algorithm, short-length fast running FIR algorithm, fast-short-length fast running FIR algorithm and proposed algorithm.

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William and Ellen Crafts' Eternal Running as Fugitive Performance: From Slavery to Freedom in Running a Thousand Miles for Freedom

  • Park, Jieun
    • Journal of English Language & Literature
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    • v.64 no.1
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    • pp.77-94
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    • 2018
  • This paper examines William and Ellen Craft's Running a Thousand Miles for Freedom (1860)-a narrative of the enslaved couple's escape from Macon to Philadelphia in the guise of a white male master and a colored slave. Expanding Judith Adler's notion of "travel as performed art," my reading of Running focuses on the Crafts' stratagems of transvestism-crossing boundaries not only of gender, but also of race, class, and disability. If travel can be understood as a form of performed art, then why not address a traveler as a performance artist? I present William and Ellen's role-playing in Running as performers of crossing borders and categories, or, as "fugitive performers," since the couple's story never reaches its final arrival but narrates an eternal run-away, far more than "a thousand miles to freedom." Using social stereotypes of race and gender to disguise, William and Ellen plot, write, choreograph, play, and recite on the moving stages and manipulate the others-especially white American audiences-who accompany the couple's run-away and those who were responsible for the cultural drama-a tragedy of American slavery. Becoming "fugitive performers," William and Ellen de-essentialize and debunk the nineteenth-century America's firm belief in distinct color line between black and white, and in the high yet unstable bars between male / female, abled / disabled, master / slave, and freedom / slavery. The Crafts alert their contemporaries and readers by presenting the complex and permeable boundaries of race, gender, class, social and cultural ability.

Analysis of Power Quality in the Substation of Honam Electrification Line according to Running Characteristic of Electric Locomotive (호남선 EL8100 전기기관차시험 운행에 따른 급전시스템 전력품질 특성 검토)

  • Shin Chang-Ki;Han Moon-sub;Lee Jang-mu;Jang Dong-uk;Lee Han-min
    • Proceedings of the KSR Conference
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    • 2004.06a
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    • pp.1292-1296
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    • 2004
  • This study is experimented results of running characteristics about electric locomotive. it executed to study a power quality in the substation of Honam electrification line and to promote knowledge, observation and management in electric rail-system. we measured to know the more exactly running characteristics that electric locomotive and electric substation at the same time.

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