• Title/Summary/Keyword: Engine development

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A Study on Convergence Medical Efficacy of Native Chicken (재래닭의 의학적 효능 융복합연구)

  • Lee, Kang-Hyun;Park, Sang-Woo;Ji, Joong-Gu
    • Journal of Digital Convergence
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    • v.13 no.9
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    • pp.439-444
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    • 2015
  • This study analyzes the chicken-related prescription shown in the literature summarized by standing tradition deliberate aims to investigate the clinical efficacy of native chickens. Therefore, The old traditional medicine books of native chickens translate and organize the relevant prescriptions. The manuscript old documents is prescribed by the old central documents sourced directly from generation to generation descendants technical publishing contemporary situation sake of the development of this unique formulation not only contemporary who established himself through numerous trials and errors. Browse almost circular in traditional medicine prescription, which is scattered throughout the country is difficult, and because of the loss can not be confirmed even its existence. This study is to establish the analysis and separated by organized to establish a database on the basis of prescription and mixed herbs in a variety of functional foods developed through usability evaluation methods of treatment. Therefore, the management systems of native chickens related to lack of knowledge and information to foster the continued expansion and specialized training and knowledge of the future growth engine industry through the added value of cultural projects of national knowledge resources. Finally, convergence research and evaluate the usefulness of native chickens through interdisciplinary research systems, and practical measures of functional foods and alternative medicine are presented as well.

A Study on the Medical Tourism and Activation : With focus on Medical Communication (의료관광의 활성화를 위한 제언: 의료커뮤니케이션을 중심으로)

  • Lee, Seung Jae
    • Journal of Digital Convergence
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    • v.12 no.3
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    • pp.391-397
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    • 2014
  • This paper is concerned with medical tourism, which is expected to become the new growth engine of the 21st century. Medical tourism is a collaborative and synergistic composition of Healthcare and Tourism, and has led to a remarkable growth in 2012 since the year 2009, exhibiting huge growth potential. This paper reviews the emerging market of the medical tourism with five major hospitals in Korea from the perspective of medical tourists, and makes suggestions for the global health care and the sustainable development in Korean medical tourism as a growth market: the construction of websites for active services and transparent management of medical expenses with proper arrangement of medical consulting and advices, cooperation of the health care center and the medical tourism industry, and the activation of healthcare communication. For the smooth progress of medical tourism, this paper suggests two separate communication channels: one for the patient tourists and the other for the medical tourism coordinators. The former needs accuracy with professional knowledge on the healthcare and communication, which should be classified as medical interpreters working with disease-oriented medical tourists. The latter refers to international medical coordinators dedicated to the smooth progress of medical tourism and services. This paper also points out the creative efforts to improve the relatively poor infrastructure of tourism industry to accommodate the medical tourists, and improve the medical tourism industry.

Comparison of Control Strategies for Military Series-Type HEVs in Terms of Fuel Economy Based on Vehicle Simulation (시뮬레이션을 이용한 군용 직렬형 HEV 의 주행 전략에 따른 연비 성능 비교에 관한 연구)

  • Jung, Dae-Bong;Kim, Hyung-Jun;Kang, Hyung-Mook;Park, Jae-Man;Min, Kyoung-Doug;Seo, Jung-Il
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.36 no.1
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    • pp.31-36
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    • 2012
  • Military vehicles, compared to conventional vehicles, require higher driving performance, quieter operation, and longer driving distances with minimal fuel supplies. The series hybrid electric vehicle can be driven with no noise and has high initial startup performance, because it uses only a traction motor that has a high startup torque to drive the vehicle. Moreover, the fuel economy can be improved if the vehicle is hybridized. In series hybrid electric vehicles, the electric generation system, which consists of an engine and a generator, supplies electric energy to a battery or traction motor depending on the vehicle driving state and battery state of charge (SOC). The control strategy determines the operation of the generation system. Thus, the fuel economy of the series hybrid electric vehicle relies on the control strategy. In this study, thermostat, power-follower, and combined strategies were compared, and a 37% improvement in the fuel economy was implemented using the combined control strategy suggested in this study.

Development of Efficient Monitoring Algorithm at EGS Site by Using Microseismic Data (미소진동 자료를 이용한 EGS 사이트에서의 효율적인 모니터링 알고리듬 개발)

  • Lee, Sangmin;Byun, Joongmoo
    • Geophysics and Geophysical Exploration
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    • v.19 no.3
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    • pp.111-120
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    • 2016
  • In order to enhance the connectivity of fracture network as fluid path in enhanced/engineered geothermal system (EGS), the exact locating of hydraulic fractured zone is very important. Hydraulic fractures can be tracked by locating of microseismic events which are occurred during hydraulic fracture stimulation at each stage. However, since the subsurface velocity is changed due to hydraulic fracturing at each stage, in order to find out the exact location of microseismic events, we have to consider the velocity change due to hydraulic fracturing at previous stage when we perform the mapping of microseimic events at the next stage. In this study, we have modified 3D locating algorithm of microseismic data which was developed by Kim et al. (2015) and have developed 3D velocity update algorithm using occurred microseismic data. Eikonal equation which can efficiently calculate traveltime for complex velocity model at anywhere without shadow zone is used as forward engine in our inversion. Computational cost is dramatically reduced by using Fresnel volume approach to construct Jacobian matrix in velocity inversion. Through the numerical test which simulates the geothermal survey geometry, we demonstrated that the initial velocity model was updated by using microseismic data. In addition, we confirmed that relocation results of microseismic events by using updated velocity model became closer to true locations.

An Analysis on Human Capital Externalities Using Hierarchical Linear Model (위계선형모형을 이용한 인적자본의 외부효과 분석)

  • Park, Jung-Ho;Lee, Hee-Yeon
    • Journal of the Economic Geographical Society of Korea
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    • v.12 no.4
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    • pp.627-644
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    • 2009
  • In the knowledge-based economy highlighting the importance of human capital, there has been a growing interest in human capital externalities as a fundamental engine of growth and development of a region. The purpose of this study is to analyze human capital externalities using 3-level hierarchical linear model(3-HLM), decomposing determinants of wages into three levels involving workers(level-1) nested within firms(level-2) nested within regions(level-3). This study separately estimates the effect of the average education level on the wages by three different schooling groups on the assumption that the intensity of knowledge spillovers varies with each group's schooling level. The main results are as follows; First, the coefficient of the average education level of a region shows 0.044, indicating that one-year increase in the average level of schooling could increase average individual earnings by 4.4%. Secondly, the external effects of human capital on three different schooling groups are considerably different, raising less than high school graduates' wages by 3.0%, college graduates' wages by 4.7%, and graduate schools' wages by 11.8%, respectively. Thirdly, well educated workers are much more sensitive to the variation of the regional education level than less educated ones when we apply the shares of each schooling group as alternative measures for the average level of education. Such findings of this study draw an implication that local governments could speed up regional economic growth in the knowledge-based economy by not only raising total human capital stock in a region but building the close networks that promote productivity-enhancing human capital external effects.

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A Study on the Development of Urine Analysis System using Strip and Evaluation of Experimental Result by means of Fuzzy Inference (스트립을 이용한 요분석시스템의 개발과 퍼지추론에 의한 검사결과 평가에 관한 연구)

  • Jun, K. R.;Lee, S. J.;Choi, B. C.;An, S. H.;Ha, K.;Kim, J. Y.;Kim, J. H.
    • Journal of Biomedical Engineering Research
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    • v.19 no.5
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    • pp.477-486
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    • 1998
  • In this paper, we implemented the urine analysis system capable of measuring a qualitative and semi-quantitative and assay using strip. The analysis algorithm of urine analysis was adopted a fuzzy logic-based classifiers that was robust to external error factors such as temperature and electric power noises. The spectroscopic properties of 9 pads In a strip were studied to developing the urine analysis system was designed for robustnesss and stability. The urine analysis system was consisted of hardware and software. The hardware of the urine analysis system was based on one-chip microprocessor, and Its peripherals which composed of optic modulo, tray control, preamplifier, communication with PC, thermal printer and operating status indicator. The software of the urine analysis system was composed of system program and classification program. The system program did duty fort system control, data acquisition and data analysis. The classification program was composed of fuzzy inference engine and membership function generator. The membership function generator made triangular membership functions by statical method for quality control. Resulted data was transferred through serial cable to PC. The transferred data was arranged and saved be data acquisition program coded by C+ + language. The precision of urine analysis system and the stability of fuzzy classifier were evaluated by testing the standard urine samples. Experimental results showed a good stability states and a exact classification.

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Research on Development of Turbo-generator with Partial Admission Nozzle for Supercritical CO2 Power Generation (부분 유입 노즐을 적용한 초임계 이산화탄소 발전용 초고속 터보발전기 개발 연구)

  • Cho, Junhyun;Shin, Hyung-ki;Kang, Young-Seok;Kim, Byunghui;Lee, Gilbong;Baik, Young-Jin
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.41 no.4
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    • pp.293-301
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    • 2017
  • A Sub-kWe small-scale experimental test loop was manufactured to investigate characteristics of the supercritical carbon dioxide power cycle. A high-speed turbo-generator was also designed and manufactured. The designed rotational speed of this turbo-generator was 200,000 rpm. Because of the low expansion ratio through the turbine and low mass flowrate, the rotational speed of the turbo-generator was high. Therefore, it was difficult to select the rotating parts and design the turbine wheel, axial force balance and rotor dynamics in the lab-scale experimental test loop. Using only one channel of the nozzle, the partial admission method was adapted to reduce the rotational speed of the rotor. This was the world's first approach to the supercritical carbon dioxide turbo-generator. A cold-run test using nitrogen gas under an atmospheric condition was conducted to observe the effect of the partial admission nozzle on the rotor dynamics. The vibration level of the rotor was obtained using a gap sensor, and the results showed that the effect of the partial admission nozzle on the rotor dynamics was allowable.

Selection of Auditory Icons in Ship Bridge Alarm Management System Using the Sensibility Evaluation (감성평가를 이용한 선교알람관리시스템의 청각아이콘 평가)

  • Oh, Seungbin;Jang, Jun-Hyuk;Park, Jin Hyoung;Kim, Hongtae
    • Journal of Navigation and Port Research
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    • v.37 no.4
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    • pp.401-407
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    • 2013
  • In parallel with the development of ship equipment, bridge systems have been improved, but marine accidents due to human error have not been reduced. Recently, research in nautical bridge equipment has focused on suitable ergonomic designs in order to reduce these errors due to human factors. In a bridge of a ship, there are numerous auditory signals that deliver important information clearly to the sailors. However, only a few studies have been conducted related to the human recognition of these auditory signals. There are three types of auditory signals: voice alarms, abstract sounds, and auditory icons. This study was conducted in order to design more appropriate auditory icons using a sensibility evaluation method. The auditory icons were rated to have five warning situations (engine failure, fire, steering failure, low power, and collision) using the Semantic Differential Method. It is expected that the results of this study will be used as basic data for auditory displays inside bridges and for integrated bridge alarm systems.

Development of T-commerce Processing Payment Module Using IC Credit Card(EMV) (IC신용카드(EMV)를 이용한 T-커머스 결제처리 모듈 개발)

  • Choi, Byoung-Kyu;Lee, Dong-Bok;Kim, Byung-Kon;Heu, Shin
    • The KIPS Transactions:PartA
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    • v.19A no.1
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    • pp.51-60
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    • 2012
  • IC(Integrated circuits)card, generally be named smard card, embedded MPU(Micro Processor Unit) of small-size, memory, EEPROM, Card Operating System(COS) and security algorithm. The IC card is used in almost all industry such as a finance(credit, bank, stock etc.), a traffic, a communication, a medical, a electronic passport, a membership management and etc. Recently, a application field of IC card is on the increase by method for payments of T-commerce, as T-commerce is becoming a new growth engine of the broadcating industry by trend of broadcasting and telecommunication convergence, smart mechanization of TV. For example, we can pay in IC credit card(or IC cash card) on T-Commerce. or we can be provided TV banking service in IC cash card such as ATM. However, so far, T-commerce payment services have weakness in security such as storage and disclosure of card information as well as dropping sharply about custom ease because of taking advantage of card information input method using remote control. To solve this problem, This paper developed processing payment module for implementing TV electronic payment system using IC credit card payment standard, EMV.

Study on effect of fuel property change on vehicle important parts and exhaust gas (연료 물성 변화가 자동차 주요부품 및 배출가스에 미치는 영향 연구)

  • Lee, Jung-Cheon;Kim, Sung-Woo;Lee, Min-Ho;Kim, Ki-Ho;Park, An-Young
    • Journal of the Korean Applied Science and Technology
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    • v.34 no.4
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    • pp.866-873
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    • 2017
  • Exhaust regulations of automobile are being reinforced increasingly as environmental problems issues came to the fore by industrial development. However, it is known that the exhaust emission is not only influenced by the system of automobile but also the fuel properties. In particular, high-performance engines have required high-performance fuels with high lubricity as CRDI engines(diesel engine) have been developed and commercialized. This paper have examined that the fuel property variations affect a major parts and an exhaust gas of automobile. It was confirmed that the high pressure pump, the injector and the DPF(diesel particulate filter) were damaged and fuel efficiency was get worse due to use the fuel of lacking lubricity property($651{\mu}m$/quality standard: less in $400{\mu}m$). In addition, through an iron component was detected in the broken DPF, it was estimated that the breakage of the DPF was caused by the excessive exhaust of the particulate matter due to the iron component of the fuel.