Dijkstra의 mini 언어를 Pascal로 변환할 경우 병렬 치환문의 처리

이수현(Lee Su-Hyun),최광무(Choe Kwang-Moo) 한국정보과학회 1988 한국정보과학회 학술발표논문집 Vol.15 No.1

Mini 언어는 Dijkstra가 설계한 언어로서 병렬 치환문(concurrent assignment), 비결정적 수행(guarded command)등의 특징을 가진 block-structured 언어이다. 본 논문에서는 mini 언어로 작성된 프로그램을 Pascal 프로그램으로 변환시켜 주는 변환기를 설계하였고 변환된 프로그램을 수행시켜 보았다. 특히 병렬 치환문을 일련의 순차 치환문으로 바꾸는 과정에서 임시 변수를 줄이는 문제에 대하여 고찰하여 보았다.

연구논문 : 의료오류 공개에 대한 대학생들의 태도 조사

이수현 ( Su Hyun Lee ),김한아 ( Han A Kim ),한흥식 ( Heung Sik Han ),김성수 ( Sung Soo Kim ) 한국의료윤리학회 2011 한국의료윤리학회지 Vol.14 No.3

Object: The purpose of this study was to identify the attitudes of patients regarding medical error. Methods: The questionnaires were administrated to 145 college students in Busan, one hundred twenty three usable 123 questionnaires were analyzed. The questionnaires consist of 4 major concepts; 1) knowledge, 2) attitudes toward disclosure of medical error, 3) expectations for doctors` behaviors, 4) barriers to the disclosure of the medical error. Results: Approximately 92% of respondents supported the immediate disclosure of medical errors, and 62.6% supported full disclosure including near misses. Approximately 57% believed that it would be most effective if doctors themselves communicated errors to patients, while almost 93% said that it was a doctor`s obligation to do so. Regarding reasons for disclosure, 44.7% said that it would reduce doctors` feelings of guilt, while 45.5% said that it would also increase patient trust for doctors. Respondents also thought that the barriers to the full disclosure of medical errors were (1) damaged reputations (30.9%), (2) worries about medical lawsuits (22.8%), and (3) professional discipline (22.0%). Conclusion: Most of the participants in this survey support the immediate disclosure of medical errors regardless of the seriousness of the error. Furthermore the participants regarded disclosure of medical error as doctors` obligation. In order to meet the patients` high expectation regarding the medical error, this might be a good time for us to find a way to close the gap between patients` expectation and doctors` current practice.

지역사회 노인에서 불안과 뇌졸중 경고증상의 관계

이수현(Su Hyun Lee),고상현(Sang Hyun Koh),이윤환(Yunhwan Lee),백종환(Joung Hwan Back),정영기(Young Ki Chung),김현정(Hyun Chung Kim),홍창형(Chang Hyung Hong) 대한노인정신의학회 2011 노인정신의학 Vol.15 No.1

Objectives:We aimed to investigate the relationship between anxiety and stroke warning signs in the elderly. Methods:Data obtained from 1,078 subjects (256 men and 822 women) aged above 65 years was analyzed from Suwon Project, which was a cohort comprising of nonrandom convenience samples. All the subjects completed the study questionnaire including their demographic characteristics, history of current and past illnesses, drug history, Korean version-Mini Mental State Examination (K-MMSE), SGDS-K (Korean version of the Geriatric Depression Scale-Short Form), BAI (Beck Anxiety Inventory). Stroke warning signs were defined as 5 stroke warning signs consistent with the American heart association public health message Results:There was significant relationship of anxiety and the number of stroke warning signs after adjusting age, sex, educational level and depression (β=2.145, p〈0.0001). On analysis of covariance, the interaction of the number of experienced stroke warning signs with sex on anxiety was observed after adjusting for the age, educational level, K-MMSE, and SGDS-K (p=0.011). Conclusion:These results suggest that there was significant relationship of anxiety and stroke the elderly.

특이값 분해법 기반 하중법을 이용한 평면 트러스의 구조 해석

이수현(Lee, Su-Hyun),이재홍(Lee, Jae-Hong) 대한건축학회 2011 大韓建築學會論文集 : 構造系 Vol.27 No.10

This paper presented structural analysis of Truss system by using Force Method based on singular value decomposition. Truss system was applied to space truss and bridges due to the fact that it was economy, lightweight and easy construction than general structures. This system had to find initial force however this process was too complicated to get exact results sometimes. This research proposed a new method that it was able to perform structural analysis of truss system. The proposed method was illustrated through numerical examples.

대학에서 알고리즘 수업을 위한 거꾸로 학습 모델

이수현(Su-Hyun Lee) 한국컴퓨터정보학회 2017 韓國컴퓨터情報學會論文誌 Vol.22 No.1

In recent years there has been a rise in the use and interest of the flipped learning as a teaching and learning paradigm. The flipped learning model includes any use of Internet technology to enrich the learning in a classroom, so that a professor can spend more time interacting with students instead of lecturing. In the flipped model, students viewed video lectures online outside of class time. Students then performed two kinds of assignments, a teamwork assignment and an individual work assignment, through the class time. In this paper, we propose a flipped educational model for a college class. This experimental research compares class of college algorithm using the flipped classroom methods and the traditional lecture-homework structure and its effect on student achievement. The result data of mid-term exam and final exam were analyzed and compared with previous year data. The findings of this research show that there was not a significant difference in the scores of student between two lecturing methods. The survey result and lecture evaluation by students show that students are in favor of the flipped learning.

A Baseball Batter Evaluation Model using Genetic Algorithm

Su-Hyun Lee(이수현),Yerin Jung(정예린),Hyung-Woo Moon(문형우),Yong-Tae Woo(우용태) 한국컴퓨터정보학회 2019 韓國컴퓨터情報學會論文誌 Vol.24 No.1

In this paper, we propose a new batter evaluation model that reflects the skill of the opponent pitcher in Korean professional baseball. The model consists of evaluation factors such as Run Value, Contribution Score and Ball Consumption considering the pitcher grade. These evaluation factors are calculated as different data. In order to include the evaluation factors having different characteristics into one model, each evaluation factor is weighted and added. The genetic algorithms were used to calculate the weights, and the data were based on the 2016 records of Korea Professional Baseball and the salary data of the players of 2017. As a result of calculation of the weight, the weight of the Run Value was high and the weight of the Contribution Score was very low. This means that when calculating the annual salary, it reflects much of the expected score according to the batting result of the batter. On the other hand, the contribution score indicating the degree to which the batting result contributed to the victory of the team according to the state of the economy is not reflected in the salary or point system.

모바일 디바이스를 위한 SVG Trns-Gateway 시스템의 설계구현

이수현(Su-Hyun Lee),유남현(Nam-Hyun Yoo),이형옥(Hyung-Ok Lee) 한국멀티미디어학회 2004 한국멀티미디어학회 학술발표논문집 Vol.2004 No.1

콘크리트 포장의 표면상태가 내부온도변화에 미치는 영향

이수현(Lee, Su Hyun),최윤석(Choi, Yoon Suk),양은익(Yang, Eun Ik),김종우(Kim, Jong Woo) 한국콘크리트학회 2011 한국콘크리트학회 학술대회 논문집 Vol.2011 No.5

텐서그리티형 케이블 돔의 형상에 따른 형상 탐색

이수현(Lee Su-Hyun),정미루(Jung Mi-Roo),이재홍(Lee Jae-Hong) 대한건축학회 2009 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.29 No.1(구조계)

This paper presents the form-finding procedure of cable dome structures. This structure is much more economical system than typical structures since it is possible that using fewer materials is able to gain as same strength with others. Moreover, these structures cannot become local due to vibrating easily by transferring loads rapidly. Therefore, Tensegrity system is effective way in area where earthquakes are a problem. However, these structures system has some disadvantages such as lack of design, analysis techniques, fabication complexity and relatively high deflections. In this study, investigated the efficiency of Tensegrity system through demonstrating stability by confirming self stable state according to prestresses and external force.

블록체인을 이용한 평가관리시스템

이수현(Su-Hyun Lee) 한국컴퓨터정보학회 2021 韓國컴퓨터情報學會論文誌 Vol.26 No.2

제4차산업혁명의 핵심기술 중의 하나로 인식되고 있는 블록체인은 인터넷을 기반으로 중앙집중적인 제어가 없이도 작동되는 자율적인 분산 정보관리시스템이다. 블록체인은 정보의 무결성, 신뢰성 등을 특징으로 하며, 이러한 특징을 필요로 하는 곳에는 블록체인을 활용할 수 있다. 대표적인 응용으로는 금융, 거래, 평가관리 등을 들 수 있다. 본 논문에서는 블록체인을 기반으로 사용자들이 자유롭게 평가개체(instance)를 생성하고 관리할 수 있는 평가관리시스템을 설계하였다. 평가관리자는 자신의 목적에 맞게 평가개체를 하나 생성하고, 평가항목과 평가자들을 배정할 수 있다. 평가자들이 평가항목에 대해서 평가를 마치면 평가관리자는 해당 평가개체에 대해서 평가 결과를 집계를 할 수 있다. 여러 용도로 평가를 시행하고 싶지만 평가시스템을 갖추지 못한 경우에 본 시스템을 이용하면 이를 비교적 간단히 평가시스템을 구현할 수 있다. 또한 블록체인의 특성으로 인하여 평가자들은 자신이 이미 기록한 평가 값을 수정하지 못하며, 시스템 관리자 또는 평가 관리자 역시 평가 값을 수정하지 못한다. 이런 이유로 평가의 신뢰성은 높아진다고 볼 수 있다. Blockchain, recognized as one of the core technologies of the 4th industrial revolution, is an Internet-based distributed data management system which does not require centralized control. Blockchain is characterized by the integrity and reliability of information, and blockchains can be used where such characteristics are required. Typical applications of blockchain include finance, transaction, and evaluation management. In this paper, we designed a blockchain-based evaluation management system that allows users to freely create and manage evaluation instances. Evaluation managers can create an evaluation instance according to their purpose and allocate evaluation items and evaluators. When the evaluators finish evaluating the evaluation items, the evaluation manager can aggregate the evaluation results for the instance. Someone, who want to perform evaluation for various purposes but do not have an evaluation system, can implement the evaluation system relatively simply by using this system. In addition, due to the characteristic of the blockchain, evaluators cannot modify the evaluation scores they have already recorded, and neither the system administrator nor the evaluation administrator can modify the evaluation scores. For this reason, the reliability of the evaluation increases.