• Title/Summary/Keyword: environmental actions

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Study on the Thermal Characteristics of Concrete Using Insulation Performance Improve Material (단열성능향상 재료를 사용한 콘크리트의 열적 특성에 관한 연구)

  • Park, Young-Shin;Kim, Jung-Ho;Kang, Yeun-Woo;Youm, Kwang-Soo;Jeon, Hyun-Kyu
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2013.05a
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    • pp.227-228
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    • 2013
  • Recently, it is certain that the increase of heating and cooling energy consumption by radical change in climate condition has caused serious problems related to environmental and energy concerns associated with increase of fossil fuel usage and carbon dioxide production as well as global warming. So, various actions to reduce greenhouse gas exhaustion and energy consumption have been prepared by world developed countries. The energy consumption by buildings approximately reaches 25% of total korea energy consumption. The greatest part in the buildings of the energy consumption is building facade. but a few research projects on concrete comprising more than 70% of outsider of buildings has been tried. This research structural insulation concrete what improved insulation performance using insulation performance improve material.

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A Study on the Automatic Berthing Control of a Ship by Artificical Neural Network (인공신경망에 의한 선박의 자동접안에 관한 연구)

  • Lee, Seung-Keon;Lee, Gyoung-Woo;Lee, Seong-Jae;Jeong, Sung-Ryong
    • Journal of the Korean Institute of Navigation
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    • v.21 no.4
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    • pp.21-28
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    • 1997
  • Along with the rapid growth of shipping and transportation , the size of a ship larger and larger. Low speed maneuverabililty of a full ship has been received a great deal of attention concerting about the navigation safety, especially in the harbour area of waterway. And, the iperation of the full ship in harbour area is one fo tehmost difficult technique. Usually highly experienced experts can make a suitable decision considering various propeller ,rudder actions and environmental conditions. The Artificial Neural Network is applied to the automatic berthing control of a ship. The teaching data are made by the berthing simulation of a ship on the computer. And, the layer neural network is used and the 'Error Back-Propagation Algorithm' is used to teach the neural network. Finally, it is shown that the berthing control is successfully done by the established neural network.

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Exploring Study Designs for Evaluation of Interventions Aimed to Reduce Occupational Diseases and Injuries

  • van der Molen, Henk F.;Stocks, Susan J.;Frings-Dresen, Monique H.W.
    • Safety and Health at Work
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    • v.7 no.1
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    • pp.83-85
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    • 2016
  • Effective interventions to reduce work-related exposures are available for many types of work-related diseases or injuries. However, knowledge of the impact of these interventions on injury or disease outcomes is scarce due to practical and methodological reasons. Study designs are considered for the evaluation of occupational health interventions on occupational disease or injury. Latency and frequency of occurrence of the health outcomes are two important features when designing an evaluation study with occupational disease or occupational injury as an outcome measure. Controlled evaluation studies-giving strong indications for an intervention effect-seem more suitable for more frequently occurring injuries or diseases. Uncontrolled evaluation time or case series studies are an option for evaluating less frequently occurring injuries or diseases. Interrupted time series offer alternatives to experimental randomized controlled trials to give an insight into the effectiveness of preventive actions in the work setting to decision and policy makers.

Inhibition of Atherosclerotic Lesion by KR-31378 in LDL Receptor Null Mice

  • Kim, Jiyun;Nam, Ki-Hoan;Choi, Jae-Hoon;Kim, Hyoung-Chin;Yang, Sung-Don;Kang, Joo-Hyung;Ryu, Young-Han;Kim, Eun-Young;Kim, Sun-Ok;Yoo, Sung-Eun;Oh, Goo-Taeg
    • Proceedings of the Korean Society of Toxicology Conference
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    • 2003.10b
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    • pp.195-195
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    • 2003
  • The recruitment and infiltration of monocytes into the artery wall is a crucial early step in atherogenesis. KR-31378 has been shown to be a neuroprotective agent in rat brain via its potent antioxidant and antiapoptotic actions. Here, we report the effects of this compound on atherogenesis, and some possible mechanisms of action.(omitted)

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Determination of Insulin Signaling Pathways in Hepatocytes

  • Kim, Sang-Kyum
    • Toxicological Research
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    • v.21 no.3
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    • pp.195-208
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    • 2005
  • Diabetes is a major cause of morbidity and mortality, and associated with a high risk of atherosclerosis, and liver, kidney, nerve and tissue damage. Defective insulin secretion in pancreas and/or insulin resistance in peripheral tissues is a central component of diabetes. It is well established that, regardless of the degree of muscle insulin resistance, glucose levels in diabetic and non-diabetic individuals are determined by the rate of hepatic glucose production. Moreover recently studies using liver-specific insulin receptor knockout mice show the paramount role of the liver in insulin resistance and diabetes. Insulin exerts a multifaceted and highly integrated series of actions via its intracellular signaling systems. The first major section of this review defines the major insulin-mediated signaling pathways including phosphatidylinositol 3-kinase and mitogen activated protein kinases. The second major section of the review presents a summary and evaluation of methods for determination of the role and function of signaling pathways, including methods for determination of kinase phosphorylation, the use of pharmacological inhibitors of kinase and dominant-negative kinase constructs, and the application of new RNA interference methods.

Optimum Disassembly Sequence Generation of Parts for Recycling (리사리클링을 위한 부품의 최적 해체경로 생성에 대한 연구)

  • Lee K.S.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2005.10a
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    • pp.824-827
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    • 2005
  • This paper represents a study on disassembly sequence generation for automobile parts. This is particularly useful because adequate end-of-life disassembly becomes crucial as take-back obligations are imposed for environmental reasons. Therefore in this paper a method is suggested to automatically derive all the feasible subassemblies and feasible actions between them from the assembly modeling files. As a result, in consideration of the all pars and subassemblies the optimum disassembly sequence is generated. And the optimum disassembly sequence for a certain part or subassembly can be also generated.

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Policy measures and necessities for small scale organic farming in the EU

  • Cho, Y.;Nicholas, P.
    • Korean Journal of Organic Agriculture
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    • v.19 no.spc
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    • pp.115-118
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    • 2011
  • Most of European countries have certain support measures of small holder organic producers in their policy system but they need to be more positive with this issue. Recent EU regulations and any other governmental organic farming measures are hardly emphasising on small holders' issues except a few measures. In order to secure small producer organic farming, the extensive efforts are needed. Developing new logos and differential support system for small producer organic at every aspects from production, marketing and public procurement level will become more positive actions to take, for example.

Effect of column loss location on structural response of a generic steel moment resisting frame

  • Rezvani, Farshad Hashemi;Jeffers, Ann E.;Asgarian, Behrouz;Ronagh, Hamid Reza
    • Steel and Composite Structures
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    • v.25 no.2
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    • pp.217-229
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    • 2017
  • The effect of column loss location on the structural response of steel moment resisting frames (MRF) is investigated in this study. A series of nonlinear static and dynamic analyses were performed to determine the resistance of a generic frame to an arbitrary column loss and detect the structural members that are susceptible to failure progression beyond that point. Both force-controlled and deformation-controlled actions based on UFC 4-023-03 and ASCE/SEI 41-06 were implemented to define the acceptance criteria for nine APM cases defined in this study. Results revealed that the structural resistance against an arbitrary column loss in the top story is at least 80% smaller than that of the bottom story. In addition, it was found that the dynamic increase factor (DIF) at the failure point is at most 1.13.

Internet of Things: An Overview and its Applications in Aviation (항공 분야에서의 사물인터넷 기술 현황)

  • Hyun, WooSeok
    • Korean journal of aerospace and environmental medicine
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    • v.30 no.3
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    • pp.100-107
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    • 2020
  • Internet of Things (IoT) is a technology that communicates data between devices, which are things, using an embedded sensor connected through network backbone such as the internet. Here, data communication technology, sensor technology, and actuator (interface) technology are fused into IoT and it turns devices into smart things. As a result, vast sized data are being generated and that data is being processed into useful actions that can control the things that are devices to make our lives much fruitful. Nowadays, the IoT, early defined as Machine-to-Machine (M2M) connection, becomes a key technology powered by growing innovation of wireless communication trends in the internet connectivity through mobile networking. This paper gives an overview of Internet of Things and brief information about major technologies and its applications in various fields focusing aviation.

Evaluating comparisons of geological hazards in landslides using fuzzy logic methods and hierarchical analysis

  • Shasha Yang;Maryam Shokravi;H. Tabatabay
    • Steel and Composite Structures
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    • v.48 no.5
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    • pp.499-505
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    • 2023
  • Geological hazards in landslide is one of the most extensive and destructive phenomena are among natural disasters. According to the topography high mountains, tectonic activity, high seismicity, diverse conditions Geology and climate, basically China to create a wide spectrum of landslides have natural conditions and these landslides are annual. They cause a lot of financial losses to the country. It is very difficult to predict the time of the landslide, hence the identification landslide sensitive areas and zoning of these areas based on the potential risk is very important. Therefore, it should be susceptible areas landslides should be identified in order to reduce damages caused by landslides find. the main purpose of landslide sensitivity analysis is identification high-risk areas and as a result, reducing damages caused by landslides It is the way of appropriate actions.