• Title/Summary/Keyword: light requirement

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The Study on the Emotional Lighting by Combination of Hybrid Materials (혼성적 소재의 결합을 통한 감성조명 연구)

  • Lee, Yun-Joo
    • Proceedings of the Korean Institute of Interior Design Conference
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    • 2006.11a
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    • pp.187-188
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    • 2006
  • With development of global network in the 21th century, Korea has recklessly accepted western culture occurred damages to our identity. Development of traditions in a modern way contribute us Korea identity and future vision. This study has studied about combination traditional material and contemporary material with a view to diversified user's desires and individuality. This object shows that function and decoration coexist together, and design reflects mans life and thinking of the age as a reflection of sociocultural phenomena. The purpose of this work to create the object that meets mans requirement and even foresees the possibility of such requirement through converting into various appearances. Different concepts including closed singleness and expansion within open structure coexist one element. also this objects suggest that transformative expressions that simplify or transform, the forms can be freely changed by consumer's emotional changes. Here, light and form are experimented for creating diversified emotions. Considering design as positively responding behavior against the limitations given by environment instead of the solution to simple functional requirement, future design will find Its value more In more active response.

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REPRESSION OF Lhcb GENES FOR CHLOROPHYLL a/b-BINDING PROTEINS UNDER HIGH-LIGHT CONDITIONS IN Chlamydomonas

  • Haruhiko Teramoto;Akira Nakamori;Jun Minagawa;Ono, Taka-aki
    • Journal of Photoscience
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    • v.9 no.2
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    • pp.373-375
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    • 2002
  • Lhcb genes encoding light-harvesting chlorophyll-a/b binding (LHC) proteins of photosystem (PS) II were comprehensively characterized using the expressed sequence tag (EST) databases in the green alga, Chlamydomonas reinhardtii. The gene family was composed of eight Lhcb genes including four new genes, which were isolated and sequenced. The effects of light intensity on the levels of mRNAs accumulation of multiple Lhcb genes were studied under various conditions. The results indicate that Lhcb genes are coordinately regulated in response to light conditions, and repressed when the input light energy exceeded the requirement for $CO_2$ assimilation. The effects of high light on the expression of the Lhcb genes observed in the presence of an electron transport inhibitor, DCMU, and in mutants deficient in photosynthetic reaction centers suggest the presence of two alternative mechanisms for regulating the genes expression under high-light conditions.

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Application of Computer-Aided Systems Engineering to Light Rail Transit System Development (전산지원 시스템공학을 응용한 경량전철 시스템 개발)

  • 박중용;박영원;이중윤;안장근;목재균;이우동
    • 제어로봇시스템학회:학술대회논문집
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    • 2000.10a
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    • pp.435-435
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    • 2000
  • Light Rail Transit (LRT) system is a complex and large system in which there are many subsystems, interfaces, functions and demanding performance requirements. Because many contractors participate in the development, it is necessary to apply methods of sharing common objectives and communicating effectively among all of the stakeholders. This paper shows not only the methodology and the results of computer-aided systems engineering including requirement management, functional analysis and architecting LRT system, but also propose a tool to help manage a project by linking WBS (Work Breakdown Structure), work organization and PBS (Product Breakdown Structure). The application of computer-aided tool RDD-100 provides the capability to model product design knowledge and decisions about important issues such as architecting the top-level system. The product design knowledge will be essential in integrating the following life-cycle phase activities over the life of the LRT system. Additionally, when a new generation train system is required, the reuse of the database can increase the system design productivity and effectiveness significantly.

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Producing Uniform High Illumination Large Area Backlight Systems with Long Life

  • Guzowski, Lawrence T.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2004.08a
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    • pp.779-782
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    • 2004
  • Establishing and maintaining optimum lamp operating temperature is critically important in backlight systems for large area displays. The information presented in this paper is based upon work completed for a tiled 37.5" AM LCD, plus projections for a 37.5", 42" & 50" monolithic display. Due to the size of the units, a requirement for highly collimated light and a requirement for high brightness, >550 nits at the display surface, significant wattage is required which generates high heat levels in the backlight display assembly and potentially, at the display rear surface. Uniformity of illumination becomes an important element in the system design because of the large area involved.

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Confirmation System of Feasibility of Train Position Through Tachometer and Balise (타코미터와 발리스를 통한 열차 위치 타당성 확인 시스템)

  • Oh, Kwi-Jin;Lee, Jin-Haeng
    • Proceedings of the KSR Conference
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    • 2009.05a
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    • pp.472-475
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    • 2009
  • Nowadays, Short headway is a requirement of Signaling System applied to subway and Light Rail Transit (LRT) being constructed in Korea. To satisfy this Systematic Requirement, the accuracy of train position information on the line is one of the main element to improve ATC system safety and performance. On-board ATC system performs feasibility of Train Position as comparing data from balise installed along the track with data from tachometer installed at both axles of train.

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Safe Adaptive Headlight Controller with Symmetric Angle Sensor Compensator for Functional Safety Requirement (기능 안전성을 위한 대칭형 각도센서 보상기에 기반한 안전한 적응형 전조등 제어기의 설계)

  • Youn, Jiae;Yin, Meng Di;An, Junghyun;Cho, Jeonghun;Park, Daejin
    • IEMEK Journal of Embedded Systems and Applications
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    • v.10 no.5
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    • pp.297-305
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    • 2015
  • AFLS (Adaptive front lighting System) is being applied to improve safety in driving automotive at night. Safe embedded system for controlling head-lamp has to be tightly designed by considering safety requirement of hardware-dependent software, which is embedded in automotive ECU(Electronic Control Unit) hardware under severe environmental noise. In this paper, we propose an adaptive headlight controller with newly-designed symmetric angle sensor compensator, which is integrated with ECU-based adaptive front light system. The proposed system, on which additional backup hardware and emergency control algorithm are integrated, effectively detects abnormal situation and restore safe status of controlling the light-angle in AFLS operations by comparing result in symmetric angle sensor. The controlled angle value is traced into internal memory in runtime and will be continuously compared with the pre-defined lookup table (LUT) with symmetric angle value, which is used in normal operation. The watch-dog concept, which is based on using angle sensor and control-value tracer, enables quick response to restore safe light-controlling state by performing the backup sequence in emergency situation.

Performance Comparison of Modulation Schemes according to the Dimming Control in MIMO-VLC System (MIMO-VLC에서 디밍제어에 따른 변조방식들의 성능 비교)

  • Lee, Min-Jung;Lee, Byung-Jin;Ju, Sang-Lim;Kim, Yong-Won;Kim, Kyung-Seok
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.14 no.4
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    • pp.63-69
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    • 2014
  • Visible light communication is a communication method using an LED's blinking(ON/OFF), it has a feature of light because of the limit of perception by the human's optic nerve. LED' dimming control used in the VLC system is important factor needed to provide energy saving and life benefits. With advances in VLC system, MIMO technology has received much attention in that it can be obtain channel capacity proportionate to the number of antenna. Therefore, in this paper, with RC method which is one of the MIMO style in VLC system, it is compared communication performance using RZ-OOK, VPPM, MPPM and OPPM. As a result of the simulation was run against this, MPPM works well in terms of Power requirement and OPPM works well in terms of Spectral efficiency and Bandwidth requirement, also it was confirmed that there is a significant impact on the communication performance of each modulation scheme according to the dimming.

Design of Linear Induction Motor Considering Accelerating Performance for Light Rail Transit (가속 성능을 고려한 경전철용 선형 유도전동기 설계)

  • Cho, Su-Yeon;Kim, Kwang-Soo;Ham, Sang-Hwan;Lee, Hyung-Woo;Lee, Ju
    • Proceedings of the KSR Conference
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    • 2010.06a
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    • pp.1409-1415
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    • 2010
  • A linear induction motor have advantages for reducing mechanical frictions and noises because it has thrust force by induced torque instead of friction force between rail and wheels. An it has additional advantage for reducing volume of bogie frame for light rail transit. The small volume causes the cost of construction down. Recently, researches of linear induction motor for thrust force of the light rail transit have been actively studied. For the rail transit, vehicle is running as follow accelerating and constant speed, finally decelerating speed passing local stops between stations. The light rail transit have only these three patterns of operating. Thus, design of that has different design specifications from others. In this paper, the linear induction motor for the light rail transit was designed considering the goal speed, accelerating time, and accelerating distance for approaching the goal speed. The designed motor was proved that it could meet the requirement of accelerating performance by2-dimensional finite element method and mechanical dynamics equation.

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Efficiency of Photoplasma of HVAC System for Train (철도차량 HVAC시스템의 광플라즈마 성능평가)

  • Han, Hwan-Su;Jeon, Seung-Gie;Park, Tae-Young;Kim, Bong-Sang;Park, Duck-Shin;Kwon, Soon-Bark
    • Proceedings of the KSR Conference
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    • 2007.05a
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    • pp.1293-1296
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    • 2007
  • An amenity requirement of the passenger using public traffic is rising continuously, and also The Ministry of Environment established "Indoor air quality management guidelines in public facilities(Dec. 2006)". To satisfy such requirement, the photoplasma device to decrease VOCs(Volatile Organic Compounds) and suspended bacillus is applied to the underframe mounted HVAC(Heating, Ventilating and Air-Conditioning) system for train. Air purifying method of photoplasma device is optical and chemical reaction that UV-light(wavelength less than 280nm) react with catalyst material(TiO2). To analyze the efficiency of photoplasma in this study, we measured the requirement time for toluene to decease down to 0.3ppm after contaminating the passenger cabin for train to toluene 1ppm.

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LED-based illuminated V-core optical engine

  • Chen, Chin-Chung;Mo, Chi-Neng;Wu, Shih-Min
    • 한국정보디스플레이학회:학술대회논문집
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    • 2006.08a
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    • pp.560-563
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    • 2006
  • LED is promising for the application of specialty illumination. Thiscolor management system, V-core, with LED light sources and the structure of V-core for LCoS projector has been proposed to improve the primary saturation, uniformity and contrast. We designed the high efficient LED modules for high brightness requirement. The LED module can operate in narrow-direction indicator, $12^{\circ}$.

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