• Title/Summary/Keyword: Clearance-to-stop

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A Study on the Improving the Competitiveness through Analysis of Advanced HALAL Logistics Management Status

  • HWANG, Moon-Young
    • The Korean Journal of Food & Health Convergence
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    • v.6 no.2
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    • pp.9-16
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    • 2020
  • The global halal market is forecast to grow at an annual average of 5.2 percent from 2017 to $3.07 trillion in 2023 due to the high growth rate of the world's Muslim population, the spread of halal-certified food consumption and the economic growth of the Muslim world. Through this study, the difficulty of obtaining halal certification can be overcome through accurate understanding of the general supply chain and other halal supply chain. Also, by examining the trends and requirements of halal logistics standards in countries with advanced halal logistics systems, halal logistics certification agencies, and halal port logistics, we can help establish our own halal logistics system by finding areas that can be benchmarked in Korea and differentiated from those that can be found. For the safe supply chain management of halal products between logistics Supply Chain, an integrated logistics system shall be developed to manage customs and customs as one-stop, while maintaining a complete halal condition on a series of logistics processes such as storage, transportation, customs clearance, etc. Korea, entry into the halal logistics market through halal integrity guarantee solution or platform development can also be considered, taking advantage of the strength of IT and packaging.

Load/Unload Dynamics of Slider on Ramp for Various Ramp Shape (램프 형상에 대한 램프 상의 로드/언로드 동특성 해석)

  • Lee, Yong-Hyun;Park, Kyoung-Su;Park, No-Cheol;Yang, Hyun-Seok;Park, Young-Pil
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2005.05a
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    • pp.467-472
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    • 2005
  • Load/Unload(L/UL) technology includes the benefits, that is, increased areal density, reduced power consumption and improved shock resistance contrary to contact start stop(CSS). It has been widely used in portable hard disk drive and will become the key technology for developing the small form factor hard disk drive. The main objectives of L/UL are no slider disk contact or no media damage. For realizing those, we must consider many design parameters in L/UL systems. In this paper, we focus on the effect of the ramp profile. We can find out the lateral velocities in L/UL process through experiments and simulations for force of voice coil motor and friction force on ramp. And then, we will gain the optimal design of ramp slope to maintain the minimum clearance of suspension dimple and slider with FE model. In special, after finding the point at which air bearing breaks and designing the ramp, we will identify the results for improving unload performance.

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A Probabilistic Study on Seismic Response of Seismically Isolated Nuclear Power Plant Structures using Lead Rubber Bearing (LRB 면진장치를 적용한 원전구조물의 지진응답에 따른 확률론적 연구)

  • Kim, Hyeon-Jeong;Song, Jong-Keol;Moon, Ji-Ho
    • Journal of the Earthquake Engineering Society of Korea
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    • v.22 no.2
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    • pp.45-54
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    • 2018
  • The seismically isolated nuclear power plants shall be designed for design basis earthquake (DBE) and considered to ensure safety against beyond design basis earthquake (BDBE). In order to limit the excessive displacement of the seismic isolation system of the seismically isolated structure, the moat is installed at a certain distance from the upper mat supporting the superstructure. This certain distance is called clearance to stop (CS) and is calculated from the 90th percentile displacement of seismic isolation system subjected to BDBE. For design purposes, the CS can be obtained simply by multiplying the median displacement of the seismic isolation system against DBE by scale factor with a value of 3. The DBE and BDBE used in this study were generated by using 30 sets of artificial earthquakes corresponding to the nuclear standard design spectrum. In addition, latin hyper cube sampling was applied to generate 30 sets of artificial earthquakes corresponding to maximum - minimum spectra. For the DBE, the median displacement and the 99th percentile displacement of the seismic isolation system were calculated. For the BDBE, the suitability of the scale factor was assessed after calculating the 90th percentile displacement of the seismic isolation system.

A study on speed-sensitive vehicle brake light system using LED (LED를 이용한 속도 감응형 차량용 브레이크등 시스템)

  • Kim, Tae-Jin;Kim, Hyung-Jun;Park, Seong-Jun;Park, In-Soo;Park, Sung-Won;Kim, Sung-Chan
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2016.10a
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    • pp.809-810
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    • 2016
  • In this study, Speed-sensitive vehicle brake using the LED, When the driver presses the brake pedal, range step while being turned in connection taillights brake of the vehicle, such as speed-sensitive vehicle brake using the LED, It is turned on according to the deceleration of the vehicle to be series of points are displayed. The rear vehicle can prevent collision about an abrupt stop of preceding vehicle by perceiving deceleration state of preceding vehicle easier and faster. Also, if the inter-vehicle distance by using an ultrasonic sensor is closer than a certain distance, the emergency light turns on to convey the situation to the driver of the rear vehicle with a buzzer.

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Determination of Not-Permitted Entrance/Exit Section at Curb Areas (단지 내 진출입 불허구간의 적정길이 산정에 관한 연구)

  • Kwon, Sung-Dae;Park, Je-Jin;Ha, Tae-Jun;Ha, Dong-Ik
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.30 no.4D
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    • pp.369-376
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    • 2010
  • At present, many problems in traffic operation and safety occurs since there is no clear design criteria on designating the not-permitted entrance/exit section at curb areas within complex areas. Even, there is no specific and detailed researches on the not-permitted entrance/exit section by now. This research calculated the proper length of the entrance/exit section at curb areas by dividing the access not-permitted section into the two sections. First, the calculation of the entrance section was done by considering the location of crosswalks, stop line clearance, the queue length of vehicles approaching to second lanes, and marginal distance for safety have been considered. Second, the calculation of the exit section was done by comparing and analyzing the distance between cars of the entrance section according to the investigation point and the distance considering the location of crosswalks, the behavior of exit vehicles and the length of vehicles. In conclusion, by presenting the proper length in consideration of the traffic operation and safety on the access not-permitted section within complex areas, it can be used as a traffic safety improvement alternative and will be contributed in establishing and operating the proper installation criteria for the access not-permitted section within complex areas.