• Title/Summary/Keyword: ACC

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Safety Evaluation of the Adaptive Cruise Control System (감응순항제어장치(ACC)의 안전성 평가)

  • Yong, Boo-Joong;Shim, So-Jung;Yoon, Kyong-Han
    • Transactions of the Korean Society of Automotive Engineers
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    • v.15 no.2
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    • pp.159-164
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    • 2007
  • The Advanced Safety Vehicle (ASV) allows drivers not only convenience and safety, but also many useful services provided by the Telematics technology. Since ASV is expected to be widely used in the near future, it is necessary to ensure the safety of ASV systems. Among several aspects of ASV, this paper investigates the safety of the Adaptive Cruise Control (ACC) system. Field tests are carried out under the domestic roadway and traffic conditions, according to International Standard Organization (ISO) requirements for ACC. The test data are analyzed whether the requirements are adequate for domestic circumstances, and the suggestions for findings are given.

Basic Characteristics of an Active Controlled Capillary for Compensating the Error Motion of Hydrostatic Guideways (유정압안내면 운동오차보정용 능동제어모세관의 기본특성)

  • 송영찬;박천홍;이후상;김수태
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1996.11a
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    • pp.662-667
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    • 1996
  • For compensating the error motion of hydrostatic guideways, the structure and the theoretical design method of ACC(Active Controlled Capillary) are proposed. The maximum controllable range, micro step response and dynamic characteristics of ACC are analyzed experimentally for verifing the availability. The experimental results showed that by the use of ACC, the error motion within 2.7${\mu}{\textrm}{m}$ of a hydrostatic guideway can be compensated with the resolution of 27nm, 1/100 of uncontolled error, and the frequency band of 5.5Hz. From these results, it Is confirmed that the ACC is very effect to improve the moving accuracy of high or ultra precision hydrostatic guideways.

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A Study on Near Cut-In Performance Comparison on Adaptive Cruise Control Stop&Go (ACC Stop&Go 시스템의 근접 Cut-In 성능 비교에 대한 연구)

  • Lee, Dong-Han;Cho, Cheol-Ho
    • Transactions of the Korean Society of Automotive Engineers
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    • v.20 no.2
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    • pp.103-109
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    • 2012
  • Adaptive cruise control Stop&Go system has been developed to reduce the driver's workload on highway or public road. This system is characterized by a moderate control of engine and brake actuator. A control system capable of modeling driver's driving characteristics has been constructed to provide natural vehicle behavior in full speed driving. But, ACC Stop&Go system has some limitations. One of the limitations is a detection limitation on near cut-in situation. This paper presents development of the near cut-in test procedure, finding of the limitation value on near cut-in scenario and performance comparisons on ACC Stop&Go system.

Development of Prefabricated Joint for 66kV Cross Linked Polyethylene Cable. (66kV XLPE Cable용 조립형 접속함의 개발)

  • Oh, E.J.;Kim, K.Y.;Lee, J.Y.;Park, J.K.
    • Proceedings of the KIEE Conference
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    • 1999.07e
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    • pp.2123-2125
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    • 1999
  • In recent the XLPE cable has been applied more widely because of its advantages, such as the low-cost and simple installation. For a prefabricated joint, its working time is short, its jointing procedures aγe simple, and its quality control is easy. Electrical performance targets of our developed 66kV cable accessories has been approved through the type test in accordance with IEC publication 840. This paper describes the developmental effort in terms of the design, structure and results of performance verification tests for 66kV XLPE cable system.

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A INSULATING DESIGN OF $SF_6$ GAS SEALING END OF CONDENSER CONE TYPE USED FOR 345KV OF CABLE (콘덴서 콘 방식의 345KV OF 케이블용 $SF_6$ 가스중 종단접속함의 절연 설계)

  • Kim, H.J.;Lee, S.C.;Oh, O.J.;Lee, H.S.
    • Proceedings of the KIEE Conference
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    • 1994.07b
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    • pp.1553-1555
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    • 1994
  • In this paper, we describes the research in condenser cone of $SF_6$ gas sealing end for 345KV oil-filled cable. The designed of condenser cone based on the results electric field analysis by electrostatics theory ana FEM. As a results. we have been designed the condenser cone and the inner insulation part of $SF_6$ seating end, the width and length, the number of condenser, the length of stress relief slope, the total length of condenser cone.

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Novel Method of Color Correction LUT generation for LCDs

  • Jeong, Jae-Won;Moon, Hoi-Sik;Berkeley, Brian H.;Kim, Sang-Soo
    • 한국정보디스플레이학회:학술대회논문집
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    • 2007.08a
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    • pp.997-1000
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    • 2007
  • Achieving white balance is one of the key issues for LCD image quality enhancement. A well-known color correction algorithm is Accurate Color Capture (ACC). Determination of ACC correction values has been time consuming as past methods have required trial-and-error analysis of differences between predicted and measured values. We propose a new ACC value determination method that uses spatially emulated patterns and measured values on patterns.

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Molecular Characterization of a Transient Expression Gene Encoding for 1-Aminocyclopropane-1-carboxylate Synthase in Cotton (Gossypium hirsutum L.)

  • Wang, Xia;Zhang, Ying;Zhang, Jiedao;Cheng, Cheng;Guo, Xingqi
    • BMB Reports
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    • v.40 no.5
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    • pp.791-800
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    • 2007
  • Ethylene performs an important function in plant growth and development. 1-aminocyclopropane-1-carboxylate (ACC) synthase (ACS), the key enzyme involved in ethylene biosynthesis, has been the focus of most ethylene studies. Here, a cotton ACS gene referred to as Gossypium hirsutum ACS1 (GhACS1), was isolated. The full-length cDNA of GhACS1 encodes for a 476-amino acid protein which harbors seven conserved regions, 11 invariant amino acid residues, and the PLP binding active site, all of which characterize ACC synthases. Alignment analysis showed that GhACS1 shared a high degree of identity with other known ACC synthases from different species. Two introns were detected in the genomic DNA sequence, and the results of Southern blot analysis suggested that there might be a multi-gene family encoding for ACC synthase in cotton. From the phylogenetic tree constructed with 24 different kinds of ACC synthases, we determined that GhACS1 falls into group II, and was closely associated with the wound-inducible ACS of citrus. The analysis of the 5' flanking region of GhACS1 revealed a group of putative cis-acting elements. The results of expression analysis showed that GhACS1 displayed its transient expression nature after wounding, abscisic acid (ABA), and $CuCl_2$ treatments. These results indicate that GhACS1, which was transiently expressed in response to certain stimuli, may be involved in the production of ethylene for the transmission of stress signals.

Inhibition of Ethylene Action Related to Poststorage Softening by 1-Methylcyclopropene Treatment in 'Fuyu' Persimmon Fruits (1-Methylcyclopropene 처리에 의한 '부유' 단감 과실의 저장 후 연회 현상과 관련된 에틸렌 작용의 억제)

  • Kim, Mi-Ae;Ahn, Gwang-Hwan;Lee, Seung Koo;Choi, Seong-Jin
    • Horticultural Science & Technology
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    • v.19 no.4
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    • pp.545-549
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    • 2001
  • The relationship between ethylene action and flesh softening in post-storage persimmon fruits was investigated by treating the fruits with 1-MCP. The patterns of firmness change caused by various treatments with 1-MCP and ethylene were similar to those of changes in cell wall-degrading enzyme activities, including cellulase, PG, PME, and ${\beta}$-galactosidase. Moreover, the activities of these enzymes were inhibited by 1-MCP treatment. These results show that the cell wall-degrading enzymes influenced by ethylene account for the flesh softening process of post-storage persimmon fruit. The ethylene production of fruits, as measured by ACC content and ACC oxidase activity, nevertheless, was not influenced by 1-MCP treatments. It is suggested that the flesh softening phenomena in post-storage persimmon fruits is correlated to the ethylene responsiveness of tissue rather than the ethylene production rate per se.

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Microbiological Assessment of Home-Delivered Meals for Children from Low-income Families during Production and Delivery (결식아동을 위한 가정배달 도시락의 생산과 배달과정 중 미생물적 평가)

  • Moon, Jeong-A;Yoo, Chang-Hee;Lee, Kyung-Eun
    • Journal of the Korean Dietetic Association
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    • v.19 no.3
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    • pp.236-252
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    • 2013
  • The purpose of this study was to assess the microbiological quality of home-delivered meals during production and delivery for children from low-income families. Production flows from a facility in Seoul that provides home-delivered meals were analyzed and the time-temperature of the food was measured. Microbiological assessment was performed for the production environment, personal hygiene, and food samples at each production and delivery step based on the process approach. It took 2 hours or longer from completion of production to meal delivery. An aerobic colony count (ACC) and coliform were not detected at knives, cutting boards, and dish towels. However, ACC (at pre-preparation, preparation, and packing areas) and coliform (at the preparation area) were detected on the hands and gloves of employees. Air-borne bacterial counts varied according to day and preparation area (ND~6 CFU/plate/15 min). Food temperatures, on the completion of production and meal delivery, fell into temperature danger zones. ACC and coliform counts of raw ingredients did not decrease after pre-preparation (washing and sanitizing) for menus involving food preparation with no cook step. ACC decreased after cooking step for menus of food preparation with cook step, but the ACC of the stir-fried and seasoned dried filefish fillet on the completion of cooking was too numerous to count due to improper heating. The ACC of seasoned young Chinese cabbages (a menu with complex food preparation) increased during delivery (from 2.5 log CFU/ml to 5.0 log CFU/ml). This qualitative assessment of foodborne pathogens revealed that B. cereus was detected in vegetable and meat product menus. These results suggest time-temperature control is necessary during production and delivery and management guidelines during production of home-delivered meals are provided for safe production.