• 공학교육연구
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• 제14권6호
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• pp.51-59
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• 2011

The authors have developed a reading & writing textbook for engineering students to improve their communication capability, and also analyzed the outcomes that the students accomplished through the Engineering Reading and Writing class. The reading & writing textbook has been organized to be used as a guidebook with which the engineering students can practically solve the problems that they would face continuously after they finish their regular curriculum and when they are employed. The questionnaire survey analysis has been performed in order to evaluate the textbook contents, lecturing, and learning outcomes for the lecturers and students finished the engineering reading and writing classes. Desirable evaluation has been resulted in the broad areas: subject extraction from the readings, logical understanding, summarizing, practical writing, writing principle, etc.

• 공학교육연구
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• 제14권2호
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• pp.30-39
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• 2011

아라비아 숫자를 읽을 때 글과 말이 일치하지 않는 문제가 있다. 아라비아 숫자를 읽는 기준이 확실치 않아, 숫자가 놓인 위치, 단위명사, 수의 크기, 구성요소들 간의 결합관계, 문맥 등에 따라 숫자를 다양하게 읽어야 한다. 이 논문에서는 더 읽기 좋은 기술문을 쓰는 관점에서, 수사, 분류사 및 수량 단위명사와 관련한 연구 자료들을 조사하여, 아라비아 숫자 자리에 우리말 숫자를 적어야 하는 여덟 가지 규칙을 정리하였다.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.500-507
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• 2022

COVID-19 pandemic forces college education to be rapidly switched from face-to-face education into remote education. Two inconsistent findings exist in previous study about remote learning. First, studies before COVID-19 pandemic found remote learning is an effective method, which provided students with higher achievement and improved their work-life balance. However, studies showed remote learning during COVID-19 pandemic is not as effective as expected because of technical issues, lack of motivations and even mental health issues. Second, findings from studies about remote learning impacts on workload and productivity during COVID-19 are also inconsistent. Therefore, this study aims to quantitatively measure college students' workload and productivity during COVID-19 of different types of tasks to provide a comprehensive and latest evaluation on remote learning. The findings of this study show remote learning slightly increases college students' total listening and speaking tasks workload, total reading and writing tasks workload. Furthermore, phone call, in-person meeting, online meeting and email workload increase significantly in remote learning. However, productivity for both listening and speaking, reading and writing tasks decreases after remote learning but no significant changes of productivity are found.

• JSTS:Journal of Semiconductor Technology and Science
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• 제16권1호
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• pp.31-38
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• 2016

A novel self-reference sense amplifier with parallel reading during writing operation is proposed. Read access time is improved compared to conventional self-reference scheme with fast operation speed by reducing operation steps to 1 for read operation cycle using parallel reading scheme, while large sense margin competitive to conventional destructive scheme is obtained by using self-reference scheme. The simulation was performed using standard $0.18{\mu}m$ CMOS process. The proposed self-reference sense amplifier improved not only the operation speed of less than 20 ns which is comparable to non-destructive sense amplifier, but also sense margin over 150 mV which is larger than conventional sensing schemes. The proposed scheme is expected to be very helpful for engineers for developing MRAM technology.

• 전자공학회논문지D
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• 제36D권6호
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• pp.79-86
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• 1999

Fe가 0.015wt.% 도핑된 $LinbO_3$ 결정에서 형성된 홀로그래픽 부피격자 필터의 각 선택성 및 역다중화 특성을 이용하여 WDM 통신 시스템에 적용하기 위한 새로운 광굴절 역다중화기를 제안하였다. 결정에 입사되는 두 기록빔의 교차각, 판독빔의 입사각 및 기록빔의 크기에 따른 광굴절 필터의 파장 선택 특성을 해석하고 실험하였으며, 동일한 회절효율을 갖는 다중-노출 필터 기록을 위한 다중화 기법을 적용하여 DMUX 소자로 활용하기 위한 예비 실험 결과를 제시했다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 심포지엄 논문집 정보 및 제어부문
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• pp.81-83
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• 2006

This Paper suggests efficient design method which is used by Bit_Inerleaver in the IEEE 802.15,3.a. Bit_Interleaver is consist of Symbol_Interleaver and Tone_Interleaver Each Interleaver is designed by using memory. In other to resolve burst error, Block Interleaver is using different leading and writing address for mixing the data. However This method has a different reading and writing memory address to realize Block Interleaver so this schematic is some complex. This Paper suggests efficient and simple Bit_Interleaver Method which classify the memory of Bit_Interleavr to reduce complexity of shcemeatic.

• 공학교육연구
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• 제17권3호
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• pp.22-33
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• 2014

This paper presents a comparative study on the effectiveness of teaching an engineering course using English with Specific Purpose(ESP). A study was performed using student groups; one class using ESP, and one class conducted in English with an English text. The course conducted using ESP showed the greatest improvement in English writing and conversation, and the students reported a greatly increased confidence in their ability to function professionally using English. A self-assessment of each student was conducted before and after the courses. Prior to the course less than 10% in each group felt that they are able to: a) understand a textbook, b) write an email, c) generate a project report, or d) follow a lecture given in English. The survey at the end of the course showed that the ESP teaching style resulted in significant improvements in students ability and confidence with writing and speaking in English, whereas reading skills were similar for both groups. This is due to the ESP method, in which students are required to give presentations and keep journals in English. After a brief review of the ESP principles and a discussion of how they were implemented, the background data of the participants(students) are described. Finally, the end-of-semester survey highlights the efficacy of the ESP approach.

• 한국자기학회지
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• 제16권3호
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• pp.186-191
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• 2006

자기터널접합 기반의 MRAM(magnetic random access memory)은 자기저항효과를 응용하는 메모리소자로서 비휘발성과 고속 정보처리가 가능할 뿐만 아니라 고집적화 할 수 있는 차세대 통합형 비휘발성 메모리이다. 그러나 기존의 메모리 소자들에 비해 스위칭 산포가 크고, 기록마진(writing margin)이 확보되지 않아 아직까지는 고집적화가 어려운 실정이다. 최근 포화자화가 낮은 NiFeSiB 및 CoFeSiB과 같은 비정질 강자성체를 자기터널접합의 자유층 재료로 사용하여 스위칭 자기장의 거대화를 크게 감소시켜 MRAM의 기록마진을 높이는 연구결과에 관해 정리하여 보았다. 그리고 이러한 물질을 이용하여 자기터널접합의 재생마진(reading margin)과 관련된 터널자기저항비의 인가전압의존성을 저감시킬 수 있었다. 본고에서는 나노자기소자 기술의 중요한 분야인 MRAM의 기술발전 방향과 연구사례를 소개하고자 한다.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2013년도 춘계학술발표대회
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• pp.476-477
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• 2013

Gadget-2 is a scientific simulation code has been used for many different types of simulations like, Colliding Galaxies, Cluster Formation and the popular Millennium Simulation. The code is parallelized with Message Passing Interface (MPI) and is written in C language. There is also a Java adaptation of the original code written using MPJ Express called Java Gadget. Java Gadget writes a lot of checkpoint data which may or may not use the HDF-5 file format. Since, HDF-5 is MPI-IO compliant, we can use our MPJ-IO library to perform parallel reading and writing of the checkpoint files and improve I/O performance. Additionally, to add reliability to the code execution, we propose the usage of Hadoop Distributed File System (HDFS) for writing the intermediate (checkpoint files) and final data (output files). The current code writes and reads the input, output and checkpoint files sequentially which can easily become bottleneck for large scale simulations. In this paper, we propose Sim-Hadoop, a framework to leverage HDFS and MPJ-IO for improving the I/O performance of Java Gadget code.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2002년도 추계학술대회논문집
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• pp.576-581
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• 2002

The suspension is a structure that supports reading, writing head in information storage device. In order to develop the information storage device of high track density, it is necessary to study about the suspension. To satisfy operation condition of information storage device, the suspension shape is very important since it correlates to dynamic characteristics. Therefore, it is necessary to analyze the dynamic characteristics by using finite element analysis and to optimize the suspension of information storage device using size optimization and topology optimization. The suspension has various modes according to different kinds of frequency bandwidth. Sway mode and second torsion mode are especially critical among them. In this paper, we investigated method to improve bandwidth of sway and second torsion mode of HDD and ODD suspension by using size optimization and topology optimization.