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이재도 ( Jae-do Lee ) 한국고등직업교육학회 2010 한국고등직업교육학회논문집 Vol.11 No.4
This research was conducted targeting 606 D College students to identify whether they have experience writing reply on the Internet to examine the types of Internet reply drafted motivation for drafting the reply, and whether they have experience drafting negative (malicious) reply. Moreover, this research examines the correlation between offensiveness and impulsiveness of the students who have or do not experience drafting malicious reply. As for the motivation for drafting the reply, male College students cited ‘no need to disclose the real name’ and 'drafting mitigates stress' while female College students cited ‘it is fun’ and ‘due to the personal emotion.’ reply of the students who have experience drafting reply, number of viable reply outweighed malicious reply. Male College students tended to draft more malicious repls compared to the female College students. There were more students who had experience drafting malicious reply at PC cafes or other places compared to their homes or public places. The students who cited ‘no need to disclose the real name’, ‘it is fun\ ‘due to the personal emotion’,‘due to the sense of heroism’ and ‘drafting mitigates stress” tended to have experienced drafting malicious reply more than other students. Offensiveness and impulsiveness of the students who had experience drafting malicious reply tended to be severe compared to the students who do not have such experience.
이재임(Jae Im Lee),이인규(In Kyu Lee),이윤석(Yoon Suk Lee),이도상(Do Sang Lee),장석균(Suk Kyun Chang),원종만(Jong Man Won) 대한외과학회 2007 Annals of Surgical Treatment and Research(ASRT) Vol.72 No.4
Acute necrotizing pancreatitis is a disease with high morbidity and mortality despite the progress made in intensive care. Gas gangrene of the pancreas, usually caused by anaerobe infection, is an extremely rare, but severe form of acute necrotizing pancreatitis. Several severity-of-illness classifications for acute pancreatitis are used to identify patients at risk for complications. Pancreatic necrosis is diagnosed radiographically by dynamic intravenous contrast-enhanced computed tomography (CT) of the abdomen. Early CT in patients with suspected necrotizing pancreatitis contributes to early intervention and many advantageously enhance survival. We report here on two cases of necrotizing pancreatitis with gas gangrene in 49-year-old male patient and 86-year-old female patient.
이재도(Jae-Do Lee) 한국컴퓨터정보학회 2007 韓國컴퓨터情報學會論文誌 Vol.12 No.4
본 연구는 D 대학 재학생 482명으로부터 설문조사하여 대학생의 휴대폰을 통해서 수신되는 스팸문자메시지의 정도 그리고 휴대폰 중독정도를 살펴보았다. 대학생들은 하루에 평균 스팸 문자메시지를 1번에서 2번 정도 수신하는 것으로 나타났다. 수신 스팸 메세지 중에서 상품광고에 대한 내용이 가장 많았고, 스팸 메세지는 거의 확인하지 않는 것으로 조사되었다. 휴대폰의 중독에 대해서는 응답자의 평균 중독점수는 100점 만점에 38.73점으로 나타났으며 60점 이상자 수는 47명으로 9.75%에 해당되며, 70점 이상자는 13명으로 2.70%에 해당되는 것으로 나타났다. 또한 학생들은 나이가 적을수록 그리고 기타지역 출신 학생이 중독적 집단에 많이 포함되어 있었고, 2년제 학생이 3년제 학생 보다 더 많은 학생이 중독적 집단에 많이 포함되어 있었다. This study executed questionnaire surveys on 482 undergraduates of D-college to review the extents of spam letter messages received through the mobile phones of college students and the extents of their addiction to mobile phones. It was revealed that each college student received one or two spam letter messages on average a day. Among the received spam messages were the messages containing the contents of commodity advertisements most frequent and the surveys indicated that spam messages are hardly read. As for the addiction to mobile phones, the average score of addiction of the respondents was indicated to be 38.73 based on the full score of 100 and the number of the ones with the scores of 60 or more was 47 which is 9.75% and the ones with the scores of 70 or more was 13 which is 2.70%. Also the younger the students were, the higher were the numbers of the students included in the addictive group and the number of students from other areas included in the addictive group was high and the number of the students in 2years system included in the addictive group was higher than the number of the students in 3years system included in the addictive group.
주파수 변동시 불평형 전압에 강인한 DSC-PLL 설계 연구
이재도(Jae Do Lee),차한주(Han Ju Cha) 대한전기학회 2018 전기학회논문지 Vol.67 No.11
In this paper, the design of robust DSC-PLL(Delayed Signal Cancellation Phase Locked Loop) is proposed for coping with frequency variation. This method shows significant performance for detection of fundamental positive sequence component voltage when the grid voltage is polluted by grid unbalance and frequency variation. The feedback frequency estimation of DSC-PLL is tracking the drift in the phase by unbalance and frequency variation. The robust DSC PLL is to present the analysis on method and performance under frequency variations. These compensation algorithms can correct for discrepancies of changing the frequency within maximum 193[ms] and improve traditional DSC-PLL. Linear interpolation method is adopted to reduce the discretized errors in the digital implementation of the PLL. For verification of robust characteristic, PLL methods are implemented on FPGA with a discrete fixed point based. The proposed method is validated by both Matlab/Simulink and experimental results based on FPGA(XC7Z030).
이재도 ( Jae-do Lee ),박명환 ( Myeong-hwan Park ) 한국고등직업교육학회 2009 한국고등직업교육학회논문집 Vol.10 No.1
This research targeted 940 students of the D-College as of 2008 to analyze individuals’ confidence in the selection of their major, question of career decision making as of the present, and obstacles for the career decision making by different variables. College students’ confidence on the selection of their major manifested significant difference depending on the gender, experience of whether they took additional year to take the College entrance exam again, question of career decision making and type of major. As for the verification on the level of confidence in career decision making, difference exists depending on the gender, question of career decision making, grade, age, hometown and type of major. When the College students’ confidence on the selection of their major increases, level of non-decision on their career decreases, and when the total level of obstacles for career decision makings high, perception of the non-decision on their career increases as well. Among the sub variables of the obstacles for career decision making, factors such as ‘lack of self assurance’, ‘sense of physical inferiority’, ‘difficulty in interpersonal relations’, ‘relationship with other important people’, ‘lack of information on occupation’ and ‘lack of interest’ affect non-decision on the career. Among the variables that influence, obstacles for career decision making that correspond to the ‘lack of self assurance’ is the highest in terms of influence, followed by the ‘lack of interest’ and ‘lack of information on occupation’.