• 한국컴퓨터정보학회논문지
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• 제10권5호
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• pp.1-10
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• 2005

다중 서열 정렬(multiple sequence alignment, MSA)은 단백질과 핵산 서열들의 분석에 필요한 가장 중요한 도구이다. 생물학적인 서열들은 그들 사이의 유사성과 차이점을 보여주기 위하여 각각의 서열들을 수직적으로 정렬한다. 본 논문에서는 클러스터링 분기를 이용하여 두 그룹의 서열들 사이에서 정렬을 수행하는 효율적인 그룹 정렬 방법을 제안하였다. 제안한 알고리즘(Multiple Sequence Alignment using Clustering Divergence : CDMS)은 하향식 발견 방법인 트리 형태의 병합을 위해 클러스터링 방법으로 구축하였다. 클러스터링 방법은 가장 긴 거리를 가지는 서열을 두 개의 클러스터로 나눌 수 있다는 것에 기초하였다. 제안한 새로운 서열 정렬 알고리즘은 기존의 Clustal W알고리즘 보다 질적 향상과 처리 시간 단축 O($n^{3} L^{2}$)이 기대된다.

• Asian Spine Journal
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• 제12권6호
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• pp.1100-1105
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• 2018

Study Design: Prospective observational study. Purpose: To determine the incidence of postoperative urinary retention (POUR) in patients undergoing elective posterior lumbar spine surgery and identify the risk factors associated with the development of POUR. Overview of Literature: POUR following surgery can lead to detrusor dysfunction, urinary tract infections, prolonged hospital stay, and a higher treatment cost; however, the risk factors for POUR in spine surgery remain unclear. Methods: A prospective, consecutive analysis was conducted on patients undergoing elective posterior lumbar surgery in the form of lumbar discectomy, lumbar decompression, and single-level lumbar fusions during a 6-month period. Patients with spine trauma, preoperative neurological deficit, previous urinary disturbance/symptoms, multiple-level fusion, and preoperative catheterization were excluded from the study. Potential patient- and surgery-dependent risk factors for the development of POUR were assessed. Univariate analysis and a multiple logistical regression analysis were performed. Results: A total of 687 patients underwent posterior lumbar spine surgery during the study period; among these, 370 patients were included in the final analysis. Sixty-one patients developed POUR, with an incidence of 16.48%. Significant risk factors for POUR were older age, higher body mass index (BMI), surgery duration, intraoperative fluid administration, lumbar fusion versus discectomy/decompression, and higher postoperative pain scores (p<0.05 for all). Sex, diabetes, and the type of inhalational agent used during anesthesia were not significantly associated with POUR. Multiple logistical regression analysis, including age, BMI, surgery duration, intraoperative fluid administration, fusion surgery, and postoperative pain scores demonstrated a predictive value of 92% for the study population and 97% for the POUR group. Conclusions: POUR was associated with older age, higher BMI, longer surgery duration, a larger volume of intraoperative fluid administration, and higher postoperative pain scores. The contribution of postoperative pain scores in the multiple regression analysis was a significant predictor of POUR.

• 한국지리정보학회지
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• 제3권3호
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• pp.45-53
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• 2000

지리정보체계(GIS)에 의한 도면중첩방법은 지도화된 명목척도의 기준들에 대하여 적합한 위치를 찾는 문제에는 이상적인 방법이 될 수 있으나, 다수의 불명확한 기준을 가진 경우에는 많은 문제점을 안고 있다. 반면에, 다요소의사결정(MCE)기법은 다수의 결정요인을 가진 복잡한 위치결정의 문제를 푸는 좋은 방법이다. 이러한 GIS와 MCE의 결합에 의한 접근방법은 다수의 결정요인을 가진 적지분석을 합리적이고 객관적으로 수행하는 도구가 된다. 이러한 방법에 의하여 김해 대청공원 집단시설지구의 위치선정과정을 사례로 소개하였다.

• Educational Technology International
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• 제15권2호
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• pp.117-141
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• 2014

This qualitative study investigated different interaction patterns in an online discussion. The data was collected from asynchronous discussion occurred in a graduate course. The data analysis methods include inductive analysis and mapping strategy. The results of the study suggest three layers of interaction: response sequences, interaction amongst participants, and concept map of messages. The visualization of response sequences enabled the researcher to discover complex and dynamic interaction patterns amongst participants. The many-to-many communication feature of online discussion does not always enable direct one-on-one interaction between two participants. Rather, one message contributed to multiple threads in the stream of conversation. In terms of interaction amongst participants, the interaction amongst participants, as indicated in the data, the messages also bind each participant and consequently a group(s) of participants together. It appears that the contribution of one message may not only enable a response to one participant, but also connect many participants to each other. The concept map of messages proposes that response sequences and interaction amongst participants can also be viewed between concepts within messages in the discussion. On the surface, the messages posted by individuals are linked by the system in a linear fashion as they are posted. However, the interaction extends to collaborative conversation amongst participants. Ultimately, a conceptual network of interrelated ideas including multiple perspectives is built in asynchronous discussion.

• 대한안전경영과학회지
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• 제17권4호
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• pp.57-66
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• 2015

This paper reviewed the effect of job burnout on safety outcomes, and the moderating effect of safety climate in Korean Air Force. The prevalence of burnout in air force pilots has not been determined and reviewed. It is also unknown whether pilots' burnout may affect their safety outcomes(safety action & compliance). The primary objective of this study was to determine the prevalence of burnout and it's effect on safety outcomes. For cross-sectional survey, 910 questionnaires were sent to pilots in air force, and 722 questionnaires among them were returned effectively. The questionnaire was divided into 4 parts examining pilots' demographic factors, job burnout, safety outcomes, and safety climates. To test and review proposed hypotheses, hierarchical multiple regression analysis was used. The results of statistical analysis appeared as follow; 1) EE(emotional exhaustion) and RPA(reduced personal accomplishment) effected negatively on safety action. 2) EE and RPA effected negatively on safety compliance. 3) EE effected more positively on safety action in higher SS(superior support) group than in lower SS group. 4) RPA effected more positively on safety compliance in higher SS(superior support) group than in lower SS group. 5) RPA effected more positively on safety action in higher CW(coworker support) group than in lower CW group.

• 정보학연구
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• 제7권4호
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• pp.9-20
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• 2004

본 연구에서는 일차적으로 현재 네트워크에서 심각한 문제 우해바이러스를 해결하기 우해서 VirusWall을 실험해본 결과 Dos를 막을 정도 밖에 안되고 이 문제를 해결하기 위해서 이차적으로 ESM, CIS와 MIS면으로 지능화된 인터넷과 Multiple Protocol 등 상황에 맞는 대처를 하도록 로그 분석시스템을 구현하였다. 결과적으로 ESM의 다양한 해킹과 바이러스에 대응하기 위한 지능적인 전사적 보안관리 시스템과 CIS를 이용하기 때문에 정보보호 측면에 폭넓게 이용할 수 있게 되었고, Site Design, Packet 전송별로 클릭할 수 있고, 내부 인터넷(GroupWare)까지 사용되었으며, Smart View를 통해서 전체적인 웹과 보안의 관계도 모니터링 할 수 있게 되었다.

• 성인간호학회지
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• 제21권1호
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• pp.53-61
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• 2009

Purpose: This study was to provide baseline data to arrange systematic management for the infectious waste. Methods: This data was collected by self-reported questionnaires from a total of 419 subjects, ie nurses, nurse's aides and laboratory technicians working at a university hospital located in G city. The collected data were analyzed by t-test or ANOVA, Tukey test, Pearson's correlation, and multiple regression analysis using SPSS/WIN 12.0. Results: The knowledge of the infectious waste was statistically significant in type of staff and level of education. Attitude was statistically significant in type of staff, age group, level of education, working period, and marital status. And also the practice of the subject was statistically significant in type of staff, age group, education level, the working periods, and marital status. There was positive association between attitude and practice(r=.63, ${\rho}$< 001). By means of multiple stepwise regression analysis, total variance explained by the attitude towards infectious wastes, single employee, and the working periods less than ten years was 44% of the practice of infectious wastes. Conclusion: An educational program focusing on strategy to change employee's attitude can be effective for building a well-organized management system.

• 한국간호교육학회지
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• 제17권2호
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• pp.306-316
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• 2011

Purpose: The purpose of this study was to compare health promotion lifestyles of college nursing students between students who live with their parents and students who are self-boarders. Methods: The sample consisted of 375 college nursing students in C and S city. Self report questionnaires were used to measure the variables. In data analysis, the SPSSWIN 18.0 program was utilized for descriptive statistics, Pearson's correlation coefficients, and multiple regression analysis. Results: The mean score for Health Promotion Lifestyle in living with the parents group was significantly higher than that of the self-boarders group (t=-2.16, p=.031). In multiple regression, perceived health state, exercise frequency, self-rated knowledge about health, and grade were significant predictors of Health Promotion Lifestyle in college nursing students, explaining 26.3%. Conclusion: This study suggests that perceived health state, exercise frequency, and self-rated knowledge about health, and grade are significant influencing factors in Health Promotion Lifestyle in college nursing students. Therefore, strategies which improve these variables must be developed for college nursing students.

• 한국음향학회지
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• 제29권8호
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• pp.509-515
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• 2010

본 논문은 충분한 음원 너비 (Apparent Source Width)와 스테레오 이미지 품질 (Stereophonic Image Quality)을 확보하는 모노-스테레오 업믹스 기법을 제안한다. 모노 신호의 분석을 위해 높은 계수의 비음수 행렬 분해가 사용된다. 그 결과로\ 나온 분해된 음원들은 음조성 (Tonality)에 의하여 타악기 (Percussive)와 음조 (Tonal) 그룹으로 분류된다. 두 그룹 중 하나는 바로 스테레오 채널로 들어가는 반면 나머지 하나는 디코릴레이터를 통과하여 들어가게 된다. 청취 평가 결과 제안한 방법은 충분한 음원 너비와 스테레오 음상을 제공할 뿐만 아니라 기존의 방법에 비해 음색 변화도 감소하는 종합적으로 향상된 성능을 보여주었다.

• 보건의료산업학회지
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• 제9권3호
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• pp.31-42
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• 2015

Objectives : The purpose of this study was to examine the factors that affect employee satisfaction according to hospital size, job group and career at hospitals. Methods : Data were collected from 4,307 employees working at 5 university hospitals. Statistics were done with the SPSS program version 21.0. Results : There were significant differences in employee satisfaction according to hospital size, job group and career. Additionally, there were positive correlations between each of the factors for employee satisfaction and overall employee satisfaction. Multiple regression analysis showed that overall employee satisfaction was affected by factors such as job, communication, personnel and leadership according to hospital size, job group and career. Conclusions : The results of this study suggest that by identifying the differences in satisfaction of employees who are working in different circumstances and providing resources to satisfy employee needs, hospital employers can promote the growth of the hospital by reducing employee turnover.