• 공학교육연구
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• 제13권4호
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• pp.87-92
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• 2010

공학인증의 여러 인증 요건들 중의 하나인 프로그램 학습성과에 대한 평가와 분석등은 평가도구 개발이라는 관점에서만 보더라도 지속적인 연구가 필요한 분야이다. 본 연구에서는 본 프로그램 학습성과 평가체제에서 제시한 절차대로 졸업시험, 에세이, 종합설계, 그리고 공인 영어점수를 평가도구로 활용한 프로그램 학습성과 평가결과와 교과목 학습성과를 이용한 프로그램 학습성과 결과를 비교하였다. 4가지 평가도구를 활용한 프로그램 학습성과 평가는 2010년 심화과정 졸업자 15명을 대상으로 하였고, 교과목 학습성과를 이용한 프로그램 학습성과는 2009년 1학기와 2학기에 개설하여 운영한 교과목을 이용하였다. 두가지 평가결과 모든 학습성과 평가에서 큰 차이를 보이지 않는 것으로 보아 교과목 학습성과를 이용한 프로그램 학습성과도 프로그램에서 활용할 수 있는 실질적인 프로그램 학습성과 평가방법 중 하나임을 알 수 있었다.

• 한국기계가공학회지
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• 제13권3호
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• pp.56-62
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• 2014

During the hot forging process, the most common cause of tool failure is wear. Tool wear results in the gradual loss of part tolerances, after which eventually the tool must be replaced or repaired. In order to maximize the lifetimes of forging tools, it is important to investigate the wear mechanisms of these tools. In this study, the hot forging of the outer race of an automotive constant-velocity joint was analyzed by a finite element method to investigate the wear distribution, especially the amount and location of the maximum expected wear damage, using Archard's wear model, which was modified considering the forging temperature. Forging analyses were carried out after modifying blocker forging tools based on established versions. The modified blocker tools resulted in an increase in the tool life up to 31% with a finisher punch.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2003년도 추계종합학술대회
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• pp.695-698
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• 2003

최근 인터넷의 발달과 모바일 기기에 대한 소비가 확충되면서 인터넷을 이용하여 기존의 기기들을 원격으로 제어하는 기술에 대한 요구가 증대되고 있다. 따라서 본 논문에서는 모바일 웹 페이지를 만들어서 웹을 통하여 연결된 기기들을 제어하는 시스템을 제안코자 하였다. 그리고 모바일 기기를 이용한 웹 제어시스템은 홈네트워크, 텔레메틱스 둥 그 응용 분야가 넓기 때문에 앞으로 지속적인 연구가 필요하다.

• 대한인간공학회지
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• 제25권3호
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• pp.61-66
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• 2006

Awkward work postures in workshop highly affect on work-related musculoskeletal disorders(WMSDs). Especially, in automobiles assembly process, these awkward work postures of workers may cause serious injury and illness. This study is to compare the performance among the evaluation tools which can measure the work-loads caused by the awkward work postures in automobiles assemble process. RULA, REBA and TVAL(Toyota Verification of Assembly Line) are used as the evaluation tools. The 85 jobs selected in the automobiles assembly process are applied to the three tools and their performances are analyzed after the evaluation of the work-load in each job. Through various measures of performance such as statistical test, DUNCAN test, regression test etc., the tendencies and characteristics among them are analyzed in detail.

• 한국태양에너지학회 논문집
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• 제22권4호
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• pp.26-34
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• 2002

Daylighting in building is very important as it has an effect on work performance as well as on their visual health. It is also regarded as a good energy conservation measure in saving energy used for lighting. There are many daylighting evaluation tools such as empirical equations, tables, nomograms, diagrams, protractors, computer simulation, scale models. This study conducted initial daylight measurements to analyze luminous environment in classrooms of elementary school and comparative analysis on three daylighting evaluation tools, such as daylight factor calculation formula, the graphic method with BRE Protractor and computer simulation with Adeline 3.0. It is found that the computer simulation tool produced the closest result to actual measurements of luminous environment in elementary school classroom, and the other simplified tools made appropriate results so that they can be used in the early stage of daylighting design process.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2014년도 추계학술발표대회
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• pp.510-512
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• 2014

Malware Analysis tools are being main topic research for many mobile security companies, in this survey, we are trying to go through the most popular tools used to find out the malicious codes and suspected android programs through reverse engineering process. There are so many malware tools have been made and implemented and some of them are efficient enough and others are quite slow and consuming high processing, however we are going to compare briefly some of them.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2016년도 추계학술대회
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• pp.635-637
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• 2016

본 연구는 같은 로봇 교구에 다른 프로그래밍 도구를 적용하였다. 로봇은 레고 마인드스톰 NXT을 활용하였다. 프로그래밍 도구는 일반적인 블록 프로그래밍 도구로는 NXT-G를 사용하였고, 시뮬레이션 프로그래밍 도구로는 MSRDS를 사용하였으며, 모바일 프로그래밍 도구로는 앱 인벤터(App Inventor)를 사용하였다. 위 3가지 프로그래밍 도구에 따라 학습들의 흥미와 학습효과를 이끌어 낼 수 있다.

• BMB Reports
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• 제48권1호
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• pp.6-12
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• 2015

Various biological molecules naturally existing in diversified species including fungi, bacteria, and bacteriophage have functionalities for DNA binding and processing. The biological molecules have been recently actively engineered for use in customized genome editing of mammalian cells as the molecule-encoding DNA sequence information and the underlying mechanisms how the molecules work are unveiled. Excitingly, multiple novel methods based on the newly constructed artificial molecular tools have enabled modifications of specific endogenous genetic elements in the genome context at efficiencies that are much higher than that of the conventional homologous recombination based methods. This minireview introduces the most recently spotlighted molecular genome engineering tools with their key features and ongoing modifications for better performance. Such ongoing efforts have mainly focused on the removal of the inherent DNA sequence recognition rigidity from the original molecular platforms, the addition of newly tailored targeting functions into the engineered molecules, and the enhancement of their targeting specificity. Effective targeted genome engineering of mammalian cells will enable not only sophisticated genetic studies in the context of the genome, but also widely-applicable universal therapeutics based on the pinpointing and correction of the disease-causing genetic elements within the genome in the near future.

• 한국정밀공학회지
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• 제17권12호
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• pp.68-75
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• 2000

This paper presents the construction of an ultra-precision machining system and machining experiments using the developed system. The system is composed of air bearing system, granite bed, air pad, and linear feeding mechanism. The cutting conditions have great effect on the surface quality in ultra-precision machining. the ultra-precision machining is mainly processed by several ${\mu}{\textrm}{m}$ depth of cut and feed rate. For this, tools with sharper cutting edge and less tool wear are needed. To satisfy these requirement, diamond is generally used as a tool material for ultra-precision machining. In order to evaluate the cutting characteristics of the PCD and MCD tools on the aluminum alloy, the machining experiments performed using the developed system.

• 한국정밀공학회지
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• 제18권9호
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• pp.89-95
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• 2001

Ceramic tool has to equip with not only high toughness and strength but also low thermal expansion and good thermal conductivity which leads to the high thermal shock resistance. These characteristics make it have longer tool life under thermal stress condition. In this study, commercial Si$_3$N$_4$ceramic cutting tool and home-made SiC based ceramic cutting tools which have different sintering time and chemical composition are tested under various cutting speed and the feed rate increase, the cutting force and the flank wear growth ratio increase, too. The performance of home-made SiC based ceramic cutting tool shows the possibility to be a new ceramic tool.