• Title/Summary/Keyword: control law

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Evaluation of PTO Severeness for 78 kW-Class Tractor According to Disk Plow Tillage and Rotary Tillage (디스크플라우 및 로타리 작업에 따른 78 kW급 트랙터 PTO 가혹도 평가)

  • Kim, Wan Soo;Kim, Yong Joo;Park, Seong Un;Hong, Soon Jung;Kim, Yeon Soo
    • Journal of Drive and Control
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    • v.16 no.4
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    • pp.23-31
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    • 2019
  • The purpose of this study was to evaluate the PTO severeness for an agricultural tractor during disk plow and rotary tillage. The PTO load measurement system was constructed with data acquisition and a PTO torquemeter. Field experiments were conducted at a combination of traveling speed (L3 Low, L3 High) and PTO speed (P1, P2). The load spectrum was generated using the rain-flow counting method, and the SWT method was used to consider the range and mean of the PTO load. The damage sum was calculated by applying a modified miner rule, which is a cumulative damage law. The relative severeness was expressed as the ratio of the lowest damage sum. Relative severeness was higher with the lower PTO gear stage, and higher driving gear stage and it was approximately 40-102 times higher for rotary tillage than disk plow tillage in the same gear stages. The relative severeness was 1010.12 in the rotary tillage under L3 High P1 based on the disk plow tillage under L3 Low P2.

A Study on Regulations Status and Improving of Municipalities by Privacy Type (개인정보보호 유형에 따른 지자체 조례현황 및 개선방안 연구)

  • Yoo, Jung-Hoon;Han, Keunhee
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.25 no.2
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    • pp.331-342
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    • 2015
  • In this paper, Seoul(25 regions), Jeonbuk(14 regions), Busan(16 regions) of 277 agencies for the based local governments were selected and reviewed an ordinance status and related laws. Based on information systems of self-regulation, the ordinance within the self-regulation for each region is being operated in the annexed form analyzed by the survey. A total of four categories(resident registration numbers, cell phone number, home number, income) by reference to the part that refused to disclose personal information, the survey analysis. Through this, The government manager who is frequently job rotation and consulting staff can understand and review the regulations by proposing the improving solution of the municipal rules. In addition, I suggested control item addition so that they can facilitate the municipal format revised review and verify the annexed form using Personal Information Management System.

Control items modeling methodology to establish core technology management system and successfully operating suggestions for institutional improvement (핵심 기술 관리 체계(CTMS) 수립을 위한 통제 항목 모델링 연구 및 제도적 개선 제안)

  • Shin, Dong-Hyuk;Shim, Mina;Lim, Jong-In
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.23 no.1
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    • pp.109-126
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    • 2013
  • Recently the core technology leakage continues to increase. It is critical issue relating to national competitiveness rely on the company's competitiveness as well as both survival and competitiveness of company. So other countries have impyz roved their laws consistently to solve these problems. And recently our country amended the law. In the paper, we will analyze world's various laws and institutions relating industrial core technologies. And this paper will provide the suggestion to settle and to develop our country's industrial core technology's protection by refer to other laws.

Flow of a low concentration polyacrylamide fluid solution in a channel with a flat plate obstruction at the entry

  • Kabir, M.A.;Khan, M.M.K.;Rasul, M.G.
    • Korea-Australia Rheology Journal
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    • v.16 no.2
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    • pp.63-73
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    • 2004
  • Flow in a channel with an obstruction at the entry can be reverse, stagnant or forward depending on the position of the obstruction. These flow phenomena have potential applications in the control of energy and various flows in process engineering. Parameters that affect this flow inside and around the test channel are the gap (g) between the obstruction geometry and the test channel, the Reynolds number (Re) and the length (L) of the test channel. The influence of these parameters on the flow behavior was investigated using a flat plate obstruction at the entry of the channel. A low concentration polyacrylamide solution (0.018% by weight) showing a powerlaw fluid behavior was used as the fluid in this investigation. The flow phenomena were investigated by the velocity measurement and the flow visualization and their results were compared with numerical simulation. These results of low concentration polyacrylamide solution are also compared with the results of water published elsewhere (Kabir et al., 2003). The maximum reverse flow inside the test channel observed was 20% - 30% of the outside test channel velocity at a g/w (gap to width) ratio of 1 for Reynolds numbers of 1000 to 3500. The influence of the test channel length (L) and the Reynolds number (Re) on the velocity ratio ($V_i$/$V_o$: inside velocity/outside velocity in the test channel) are also presented and discussed here.

Design of All-in-One Descending Lifeline with Reduced Usage Time (사용시간이 단축된 일체형 완강기 설계)

  • Yun, Seul-Gi;Park, Jung-Woo;Jung, Geun-Hak;Jung, Min-Hee;Kang, Sangwook;Kim, Sang-Hyun
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.19 no.5
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    • pp.21-26
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    • 2020
  • A descending lifeline is the only self-escape fire apparatus for fire in high-rise buildings and is installed in most buildings according to fire-fighting law. However, it is difficult to properly use and quickly evacuate during an emergency due to its complex installation methods and procedures, even if users are pre-educated. In this paper, a new one-touch descending lifeline, which simplifies usage procedures and can be used regardless of whether users are educated, is proposed to solve the drawbacks of the conventional descending lifeline. All separate parts that require additional installation are initially assembled in a box, and the concept of a double square linkage is proposed to enable escape in a single motion of pushing the handle attached to the box. Three steps of kinematic design are explored to determine an appropriate configuration of double square linkage, and its dimensions are determined using Matlab and NX CAD software. The proposed all-in-one descending lifeline also follows the enforcement decree of the Fire Control Act, and its feasibility is verified through fabrication.

View and Subjects on the Settling the Area of Ecological Restoration in Korea (우리나라 생태복원분야 정착의 전망과 과제)

  • Moon, Seok-Ki;Koo, Bon-Hak;Nam, Sang-Jun
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.4 no.1
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    • pp.67-79
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    • 2001
  • According to the new general movement of ESSD in Korea, the role, background, and subjects, etc. of Ecological Restoration Area were studied to find out the way for this area to be settled as one kind of industry. Questionnaire and literature study were carried out to understand and to find out the way of the area settlement with the conceptual and practical definition of it. The related sub-areas studied were 1. regulations and standards including design and construction 2. researches and developments around the area 3. related curriculums applying in the educational organizations 4. present situation of the industry. Followings are the results of this study and several proposals for the area to be settled in Korea with the other related areas. 1. The boundary of Ecological Restoration could be defined as the concept of preservation(or conservation) and restoration of the ecosystem with ecological planting - including the restoration strategies for the areas of slope, artificial foundations, watersides and wetlands, with in bio-diversity and eco-forests for these areas. 2. It seems that the more investments needed for the elaborate and professional techniques to be developed for the design and construction works to the contrary that the base of this area be matured already in the several sub-areas. 3. For the successful work of Environmental Restoration, defining the new industrial branch -independent from existing construction industry- is recommended through the law system under the control of the Ministry of Environment. It will be better if professional officer system in governmental organization could follow up this. 4. Educational organization and Technical expert qualifying system to train the Ecological Restoration Professionals should be induced for the effective practice of the area.

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Globalization of Korean Electrical Installations Standards and Codes Based on Comparison of IEC 60364 with NFPA 70(NEC)

  • Ki, Chung-Young;Ro, Kwak-Hee;Seop, Shin-Hyo;Joo, Nam-Taik
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 2002.11a
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    • pp.280-287
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    • 2002
  • Most Technological laws of Korea are almost identical to those of Japan. Electricity was not introduced to Korea until lighting ceremony in Kyong-Bok palace observed in 1887. Since Korea was annexed to Japan in 1910, Korea have applied Japanese law and regulations made by Chosun government-general. And public works were under Japan control. Korea accepted adopted the power plants of America, codes of NESC, ASME / ANSI, MEMA while Japan accepted or adopted only IEC. Our generation distribution system takes American style while our consumer side takes Japanese style. As global trade system was transferred GATT into WTO, the technological standards, certification, construction and testing are in harmony internationally. The WTO / TBT agreement came in effect after 12th, April, 1979. The sections in the agreement require the members to exchange their own standards and codes for the harmonized ones by degree. The Korean distribution system has a strong resemblance to American system so that the internal engineers are confused in application of the relevant standards. IEC60364 and NEC are technologically similar but practically unconvertible because both have their different originality, that is to say Europe and USA. This paper deals with the fundamental elements of electrical safety system on review of IEC 60364 and NEC. This paper considers how engineers should apply IEC60364 and NFPA 70(NEC) based on all-the-way review of them.

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Alternative Dispute Resolution for TV Format Disputes (TV포맷 분쟁에 대한 대체적 분쟁해결 방안)

  • Lee, Jae-Kyoung
    • Journal of Arbitration Studies
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    • v.26 no.2
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    • pp.27-44
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    • 2016
  • The use of program formats has slowly but surely developed into an important component of the television industry. This article examines the surprising gap between the constantly growing, multi-billion-dollar trade of program formats and their unclear and contradictory legal treatment. From both the social and commercial standpoints, television formats are valuable creations. Understanding the two products, the paper and program stages, of a television format and their respective markets, is fundamental to discussions of its legal protection. Interestingly, under current law, the less-developed stages of the process (program ideas and paper formats) are awarded more protection than the aired program format, which accumulates higher levels of investment, creativity, and expression. Internal industry mechanisms, such as vertical integration, damage to reputation, and industry institutions, exist in both markets and are still able to control and influence members' behavior to some extent. However, while the influence of internal industry mechanisms is still strong in the paper format market, in the program format market, which continues to grow, such mechanisms have weakened, amplifying the importance of a clear legal system. The absence of protection will certainly not completely eliminate the production of new program formats. However, these factors do not add up to a case against protection. The changes in the program format market in the last two decades support the theory that the overall effect of providing legal protection for TV formats would promote beneficial competition and encourage more original creations. The underlying question for television formats should not be whether to protect but rather how.

A Study on the Characteristics of Chinese Arbitration System and Its Historical and Cultural Background (중국 중재제도의 특징과 그 역사.문화적 배경에 관한 연구)

  • Oh, Won-Suk;Li, Jing-Hua
    • Journal of Arbitration Studies
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    • v.24 no.2
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    • pp.161-181
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    • 2014
  • This thesis, which mainly focuses on the characteristics of the Chinese arbitration system, will mainly deal with three characteristics and analyze the causes that directly or indirectly influence them. The first characteristic is China does not recognize ad hoc arbitration. Ad hoc arbitration is the initial form of arbitration, and it occupies an important position in many countries; however, China's judicial system does not recognize it. There are many disadvantages for building a system of ad hoc arbitration in China; i. e., the arbitration system in China is undeveloped and shot-time established, and it lacks social and civil society basis, along with a credit system, which the Western ad hoc arbitration relies on. The second characteristic is the existence of excessive judicial supervision and control over arbitration in China. Judicial supervision over arbitration has been the customary practice in each country of the modern world, but sharp variation exists in the legal stipulations and the courts' attitude toward the standard to be applied in the supervision over arbitration. In China, there has always been a controversy over judicial supervision, and the standards applied in the supervision over arbitration by courts in different regions are less than identical. The last characteristic is the existence of a combination of mediation with arbitration, which is called Arb-Med in China. Such means that in the process of arbitration, the arbitrator may conduct mediation proceedings for the case it is handling if both parties agree to do so. Under the Chinese law, Arb-Med may lead to a binding and enforceable outcome. However, it has several legal disadvantages and almost no country adopts this system. China still insists that this system will go on because Arb-Med was first made in China, and its effect was proven through long-time practice in CIETAC.

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Settlement Characteristics of Soft Ground Applying the Suction Drain Method (석션드레인공법을 적용한 연약지반의 침하 특성)

  • Han, Sang-Jae;Yoo, Han-Kyu;Kim, Byung-Il;Kim, Soo-Sam
    • Journal of the Korean Geotechnical Society
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    • v.29 no.3
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    • pp.15-27
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    • 2013
  • A vacuum pressure method has been developed to solve many problems in the conventional surcharge method such as embankments, and its application has increased in the country. Recently, to control target settlements in the field, there have been many studies on the comparison of settlements between vacuum pressure method and surcharge load method in the same conditions. In this study, the settlement characteristics of soil subjected to vacuum pressure and surcharge pressure are discussed. The results indicate that if vacuum pressure is applied to the improvement of soft ground, there will be inward lateral displacement and the vacuum pressure will induce generally less settlement than a surcharge load of the same magnitude. The range of settlement reduction ratio is 0.54~0.67 based on Hooke's law, 0.91 based on field cases, 0.81 based on laboratory oedometer tests, 0.75 based on the theory of elasticity and coefficient of volumetric compressibility and 0.77~0.93 in its recent applications to the thick soft ground.