• 공학교육연구
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• 제15권3호
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• pp.66-71
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• 2012

In this paper, we try to explore basic factors that defines easy-to-learn programming language and easy-to-learn development environments for novice students who have not been exposed to computer programming language education. For these purpose, we investigate and analyze computer programming languages that are widely used in industrial environments, and present the summary and analyzed results. From the experimental results, most novice programmers understand computer programming languages in terms of procedural programming languages rather than in terms of functional programming languages or object oriented programming languages. Furthermore, we have found that, for effective education of basic level programming languages, factors of development environments are much more important than factors of programming paradigms that the computer programming languages are based on.

• 대한미생물학회지
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• 제16권1호
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• pp.7-12
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• 1981

This study was undertaken to know the distribution of V. parahaemolyticus in sea fishes feeding at an aquarium and from kitchen environments of restaurants located in Masan, Kyungnam, during May and June, 1979. Results obtained are as follows: The detection rate of V. parahaemolyticus was calculated as 21.1% from 1103 specimens; as 38.1% from 336 sea fishes and as 10.4% from 675 kitchen environments. The detection rate of V. parahaemolyticus were 49.6% from 127 sea fishes feeded at an aquarium contaminated by V. parahaemolyticus and 31.1% from 209 sea fishes feeded at an aquarium not contaminated by V. parahaemolyticus. The detection rate of V. parahaemolyticus were shown as 14.6% from 261 kitchen environments having an V. parahaemolyticus contaminated aquarium but as 7.7% from 414 kitchen environments of restaurants having an aquarium not contaminated by V. parahaemolyticus.

• 천문학회보
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• 제43권1호
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• pp.42.3-42.3
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• 2018

We investigate surface brightness profiles (SBPs) of dwarf galaxies in field, group, and cluster environments. Using images from the Korea Microlensing Telescope Network (KMTNet) Supernova Program (KSP) for the NGC 2784 group and SDSS for the Virgo cluster, SBP types are classified into profiles with single exponential (Type I), double exponential (Type II and Type III). Type II and Type III have smaller and larger outer sizes than inner sizes, respectively. SBP types of field dwarfs are compiled from a previous study. The distributions of SBP types are different in three environments. After comparing sizes of dwarfs in different environments, we suggest that since sizes of some dwarfs are changed due to the environmental effects, SBP types are able to be transformed. It makes that the distributions of SBP types in three environments are different.

• 한국인터넷방송통신학회논문지
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• 제14권1호
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• pp.113-118
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• 2014

최근 실내 환경에서 온도, 습도 등과 같은 현상 데이터를 수집하여 제공하는 실내 상황 정보에 대한 연구가 진행되고 있다. 특히 빌딩에서 불쾌한 상황이 증가하고, 환경 변화에 대한 인식 요구가 증가하고 있다. 본 논문에서는 현상 데이터를 대신하여 실시간 실내 쾌적 상황 정보를 제공하기 위해 GIS 기반의 실내 쾌적 지수 및 상황 산출 엔진을 설계하고 구현한다. 이를 통해 자신의 실내 쾌적 상황을 자가 진단하고, 이를 사용자에게 알려주어 실내 환경을 관리할 수 있다.

• 전자공학회논문지A
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• 제30A권1호
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• pp.73-85
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• 1993

This paper presents a design and implementation of CAD(Computer-Aided Design) system with tools and design environments for IC(Intergrated Circuits)design. The CAD system can be easily installed in various sites with limited resources, since most CAD tools and design environments are available in the public-domain and Unix & X Window-based PC-386 and Workstation is used for the hardware platform. In order to improve the flexibility of the CAD system, objects are defined in the context of tools and environments` and object tables are programmed to describe the integration of CAD tools and design environments. During the execution, tool-objects deal with intertool communication and round-robin mechanism to incrementally control the execution of CAD tools. The IC design of LPC(Linear Predictive Coding) Speech Synthesizer is carried out to find out improvements and bugs of the CAD system.

• 한국환경보건학회지
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• 제35권4호
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• pp.239-248
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• 2009

The Institute of Medicine of the National Academies of Science in the United States concluded in its 2004 report that excessive indoor dampness is a public health hazard and that its prevention should be a public health goal. Water damage in buildings, such as leaks from roofs, walls, or windows, may increase indoor moisture levels. Excessive dampness may promote microbial proliferation in indoor environments, increase occupants' exposure to microbial agents, and eventually produce adverse health effects in building occupants. Epidemiological studies to demonstrate the causal association between exposure to indoor microbial agents and health effects require reliable exposure assessment tools. In this review, I discuss various sampling and analytical methods to assess human exposure to biological agents in indoor environments, their strengths and weaknesses, and recent trends in research and practice in the USA.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2000년도 춘계학술대회논문집 - 한국공작기계학회
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• pp.34-38
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• 2000

The trend of cutting process today goes toward higher precision and higher efficiency. Many thermal/frictional troubles occur in high-speed machining of die and mold steels.In this paper, the thermal characteristics are evaluated in high sped ball end-milling of hardened steel(HRc42). Experimental work is performed on the effect of cutting environments on tool life and cutting temperature. Cutting environments involve dry, wet(20bar), compressed chilly air at -9$^{\circ}C$, compressed chilly air at -35$^{\circ}C$. The measuring technique of cutting temperature using implanted thermocouple is used. The cutting temperature is about 79$0^{\circ}C$, 35$0^{\circ}C$ and 54$0^{\circ}C$ in dry, wet and compressed chilly air at +9$^{\circ}C$, respectively. The tool life for compressed chilly air at -9$^{\circ}C$ is longer than all other cutting environments in experiment.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제6권2호
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• pp.547-565
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• 2012

The design, development and deployment of Mobile Agent (MA) systems for high-level inference and surveillance in wireless sensor networks and RFID systems have drawn increasing attention in the past decade. To answer how the state-of-the-art of MA in a wide range of ubiquitous and sensor environments is, this paper investigates the current progress of MA. It proposes a taxonomy, by which MA systems in ubiquitous computing environments are decomposed and discussed. Then, this paper provides insights into the strengths and weaknesses of existing efforts. Finally, it presents a series of solutions from the viewpoint of various roles of MA in ubiquitous environments and situations.

• Asia pacific journal of information systems
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• 제10권1호
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• pp.141-164
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• 2000

Nowadays, domestic hospital business is under the great threat from the environmental changes caused by the entrance of foreign hospitals and the technical changes related to information systems. In such a situation, to enhance the competitive edge of a hospital, it is needed to set up a competitive strategy and to construct an efficient information systems to back up the competitive strategy. If the hospital information systems(HIS) is consistent with a competitive strategy backing up, the competitive force of a hospital will be enhanced. For this respect, the influence of the competitive strategy and HIS construction environments on the performance of HIS was examined. The results suggested that if a HIS should be newly constructed or should be restructured, it is necessary to select construction environments of HIS such as physical environments, development methods and development tools to support functional strategy effectively based on the competitive strategy adopted by a hospital.

• 공학교육연구
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• 제13권6호
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• pp.24-32
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• 2010

본 연구의 목적은 온라인 토론 환경에서 교수자의 사회적 메시지를 통한 피드백 형태가 토론 참여도와 만족도에 미치는 효과를 살펴보는 것이다. 본 연구의 결과 분석을 통해 도출된 결론은 다음과 같다. 온라인 토론 환경에서 교수자의 상호작용적 형태의 사회적 메시지를 통한 피드백이 정의적 형태보다 학습자의 토론 참여도 및 만족도를 더 증진시키는 것으로 나타났다. 이상의 연구결과를 통해, 온라인 토론 환경에서 토론 참여도와 만족도의 향상을 위해 교수자의 사회적 메시지를 통한 피드백 형태의 적절한 활용을 제안한다.