• Title/Summary/Keyword: Transferability

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Making the Difference in Occupational Health: Three Original and Significant Cases Presented at ICOH Congresses in the 20th Century

  • Iavicoli, Sergio;Valenti, Antonio;Barillari, Caterina;Fortuna, Grazia;Boccuni, Valeria;Carnevale, Francesco;Riva, Michele A.;Kang, Seong-Kyu;Tomassini, Luigi
    • Safety and Health at Work
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    • v.11 no.2
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    • pp.215-221
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    • 2020
  • Background: The aim of this study is to illustrate the historical role of the International Commission on Occupational Health (ICOH) congresses as an arena where national and international occupational medicine can dialogue and as the first example of scientific transferability of the research and prevention results that have had such an impact on global public health. Methods: We used the ICOH Heritage Repository, in which ICOH congress proceedings (from the first congress in Milan in 1906 to the last congress, held in Dublin in 2018), are organised in an orderly way, updated and easily accessible according to open access logic. Results: We describe studies by three physicians who submitted significant scientific work to ICOH congresses, one on the battle against ancylostomiasis (Volante, 1906), the second (Quarelli, 1928) on carbon disulphide poisoning, and the third (Viola, 1969) on the carcinogenicity of vinyl chloride monomer. Priority is given to Italian cases, on account of the authors' obvious familiarity with the issues. Conclusion: The visibility offered in ICOH conferences and their published proceedings has boosted the international spread of their findings, contributing to the scientific transferability of the research results and influencing the development of policies and prevention interventions that have had a great impact on global public health.

Estimation of Link Travel Speed Using Single Loop Detector Measurements for Signalized Arterials (단일루프검지기를 이용한 간선도로 실시간 통행속도 추정 방법론)

  • 김영찬;최기주;김도경;오기도
    • Journal of Korean Society of Transportation
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    • v.15 no.4
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    • pp.53-71
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    • 1997
  • This paper presents a methodology for estimating average travel speed using volume and occupancy data from single magnetic loop detectors for signalized arterials. Three methods were developed and evaluated using field data: VPLUSKO method, fuzzy control method, and neural network method. While the VPLUSKO method is easy to apply, it results poor performances compared to other methods. The neural network method showed the best performances among the candidate methods. This method revealed the weakness in transferability, however. From limited cases of field test, it was concluded that the method of the fuzzy control application showed reasonable performance of estimation. It was also demonstrated that the fuzzy control method has the capability of transferability.

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An object-oriented programming for the simulation of integrated gasoline engine/automatic transmission control (가솔린 엔진/자동변속기 통합제어 시뮬레이션을 위한 객체지향형 프로그래밍)

  • 양경진;홍금식;최재원
    • 제어로봇시스템학회:학술대회논문집
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    • 1997.10a
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    • pp.484-487
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    • 1997
  • In this paper a simulation program for the powertrain control of a gasoline engine with automatic transmission is presented, The object-oriented programming approach has been pursued, and MATLAB/ SIMULINK was adopted for its environment. The purpose of the paper is to demonstrate the programmability of a control system in the object-oriented fashion so that the transferability of the objects is guaranteed. The program developed in the paper was applied to a gasoline engine and the mathematical models used in the paper were just adopted from the literature. It is shown that the simulation results and real experimental results coincide well. Therefore, it is expected that the program or objects made in the paper are useful for the automotive engineers when they design a new engine/transmission system or modify a part of existing system.

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A Study on a Microreplication Process for Real 3D Structures Using a Soft Lithography (동분말이 함유된 에폭시 수지를 이용한 마이크로 기어의 제작에 관한 연구)

  • Chung Sungil;Park Sunjoon;Lee Inhwan;Jeong Haedo;Cho Dongwoo
    • Journal of the Korean Society for Precision Engineering
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    • v.21 no.12
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    • pp.29-36
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    • 2004
  • In this paper, a new replication technique for a real 3D microstructure was introduced, in which a master Pattern WES made of photo-curable epoxy using a microstereolithography technology, and then it was transferred onto an epoxy-copper particle composite. A helical gear was selected as one of the real 3D microstructure for this study, and it was replicated from a pure epoxy to an epoxy composite. In addition, the transferability of the microreplication process was evaluated, and the properties of :he epoxy composite were compared to that of the pure epoxy, including hardness, wear-resistance and thermal conductivity.

Prevalence and Characterization of Plasmid-Mediated Quinolone Resistance Determinants qnr and aac(6')-Ib-cr in Ciprofloxacin-Resistant Escherichia coli Isolates from Commercial Layer in Korea

  • Seo, Kwang Won;Lee, Young Ju
    • Journal of Microbiology and Biotechnology
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    • v.30 no.8
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    • pp.1180-1183
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    • 2020
  • The prevalence and characterization of plasmid-mediated quinolone resistance (PMQR) determinants in ciprofloxacin-resistant Escherichia coli isolated from a Korean commercial layer farm were studied. A total of 45 ciprofloxacin-resistant E. coli isolates were recovered and all isolates were multidrug-resistant. Eight isolates have the PMQR genes aac(6')-Ib-cr, qnrS1, and qnrB4, and seven isolates exhibited double amino acid exchange at both gyrA and parC, and have high fluoroquinolone minimum inhibitory concentrations. Five transconjugants demonstrated transferability of PMQR and β-lactamase genes and similar antimicrobial resistance. Because PMQR genes in isolates from commercial layer chickens could enter the food supply and directly affect humans, control of ciprofloxacin resistance is needed.

Development and Test of a Macro Traffic Simulation Model for Urban Traffic Management (도시 간선도로 교통류관리를 위한 교통모형의 개발 및 검증)

  • 이인원
    • Journal of Korean Society of Transportation
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    • v.13 no.4
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    • pp.79-103
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    • 1995
  • The elasticity of a model is considered most important. Without showing the proper elasticity any model cannot provide useful information for decision making. This paper demonstrates a macro model which can generate dynamic transport informations every 15 minutes. Without the Wardrop principles and the monotonicity assumptions for the link travel time and link volume relationship, the basic elements of this new modeling approache are composed of link density simulation, stochastic incremental route choice, departure time choice, destination choice and mode choice. The elasticity of the proposed model is examined based on elasticity equations and simulation results. Also the transferability from a mega city like Seoul to a big city like Daejon is demonstrated for the choice model. The issues centering around the dynamic relations among density(k), speed(u), and flow rate(v) are also discussed for the modeling of highly congested situations.

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High-Yield Etching-Free Transfer of Graphene: A Fracture Mechanics Approach

  • Yoon, Taeshik;Jo, Woo Sung;Kim, Taek-Soo
    • Journal of the Microelectronics and Packaging Society
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    • v.21 no.2
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    • pp.59-64
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    • 2014
  • Transfer is the critical issue of producing high-quality and scalable graphene electronic devices. However, conventional transfer processes require the removal of an underlying metal layer by wet etching process, which induces significant economic and environmental problems. We propose the etching-free mechanical releasing of graphene using polymer adhesives. A fracture mechanics approach was introduced to understand the releasing mechanism and ensure highyield process. It is shown that the thickness of adhesive and target substrate affect the transferability of graphene. Based on experimental and fracture mechanics simulation results, we further observed that compliant adhesives can reduce the adhesive stress during the transfer, which also enhances the success probability of graphene transfer.

A Study of the Runoff Simulation and the Urbanization Effect on Small Watersheds (소규모 단지의 유출모의와 도시화 효과에 관한 연구)

  • 이병호
    • Water for future
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    • v.24 no.2
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    • pp.59-70
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    • 1991
  • To simulate the mechanism of runoffs on seall watersheds, the ILLUDAS and the ILSD models are used in this study'. The transferability of these models to Korean watersheds and significant factors that could affect their applicability were examined through the analyzation of the hydrographs generated from runoff simulations. The runoff hydrographs from the watersheds with different urbanization rates are also simulated to investigate the degree of variation of the peak discharges the runoff rates, the runoff volumes and other hydrological factors related with urban runoff.

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Application of Dynamic Model SIMRIW for Predicting the Growth and Yield of Rice (수도성장 및 수량예측을 위한 동적모형 SIMRIW의 적용)

  • 이남호
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.35 no.2
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    • pp.73-80
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    • 1993
  • A simplified physiologically-based dynamic model, SIMRIW was selected for predicting the growth and yield of rice. The applicability of the model to the rice cultivars and weather conditions in the Republic of Korea was evaluated. Parameters of the model were calibrated using actual rice yields in Suweon region and an optimization scheme, Constrained Rosenbrock Algorithm. The simulated results from the calibrated model were in good agreement with the field data. The model with parameters calibrated for Suweon was applied to other five regions for the evaluation of transferability, but the simulated results fell short of satisfaction. However, the model is found to be applied to real-time prediction of the growth and yield of rice crop, which is believed to be useful for timely rice crop management, agricultural policy making, and optimal irrigation water management.

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Prevalence and molecular characteristics of 16s rRNA methylase gene rmtB in amikacin resistant Escherichia coli isolated from South Korea

  • Belaynehe, Kuastros Mekonnen;Won, Ho Geun;Yoon, In Joong;Yoo, Han Sang
    • Korean Journal of Veterinary Research
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    • v.59 no.3
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    • pp.157-160
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    • 2019
  • The production of rmtB-encoded 16S rRNA methylases has emerged as a novel mechanism promoting high-level resistance toward aminoglycosides in Gram-negative bacteria. Between 2015 and 2017, 636 distinct commensal Escherichia (E.) coli isolates were collected from different farms in South Korea to determine the prevalence and molecular characteristics of rmtB. The positive rates of rmtB between all the isolates and amikacin-resistant isolates were 1.1 and 100%, respectively. High-level aminoglycoside resistance could be transferred by conjugation from rmtB-positive donors to higher amikacin-resistance efficacies. This is the first report of 16S rRNA methylase-encoding genes in E. coli isolated from food-producing animals in Korea.