IT 아웃소싱 운영을 위한 정보시스템 운영감리 모형

김희완,정준,김동수,이혜경,한기준 한국디지털정책학회 2012 디지털융복합연구 Vol.10 No.11

A Study on the Application of Agile Methodology to Improve Software Development Quality

김희완 한국인터넷방송통신학회 2020 Journal of Advanced Smart Convergence Vol.9 No.3

There are many limitations in applying agile methodology to projects so far. In fact, projects overlap with other development methodologies and management processes, resulting in confusing progress, while there are often cases where the benefits of agile cannot be embraced due to a lack of understanding of agile processes and the organization's inability to adapt to change. It is an important role of information system development to improve the quality of agile application projects by discovering the problems and improvements in these cases. In this paper, we analyze the differences between existing development and project management methods and agile, and analyze agile processes. The optimal agile methodology was proposed by analyzing and applying methodologies established and applied mainly by large domestic development companies. In addition, the effectiveness was verified through a questionnaire of IT experts, and the result of the questionnaire was verified to be 4.75 points on a 5-point scale.

요구사항 기반 정보시스템 감리의 정량화 분석 모델 설계

김희완,김훈겸,고찬,김동수 한국디지털정책학회 2011 디지털융복합연구 Vol.9 No.5

메모리 상주 DBMS에서의 응용 트랜잭션 성능평가에 관한 연구

김희완,이혜경 (사)디지털산업정보학회 2009 디지털산업정보학회논문지 Vol.5 No.4

Recently, the Main Memory DBMS is gradually being expanded by the appearance of a large capacity of a Main Memory System, the increase in business area where it requires a real time process, and the rise of the users’ required level. The Main Memory DBMS, which is able to go through a large capacity data process of the disk-based DBMS and guarantees a high efficiency, has domestically developed and has been put to a practical use. This paper presents an examination of the applied technologies and the limits of Altibase system, which is Main Memory DBMS. Moreover, it evaluated and performed a comparative analysis on the performance level of the Main Memory DBMS and the disk-based DBMS based on the same application. After five trials of the experiment based on the operating application, it was confirmed that the performance level of the Main Memory DBMS is enhanced and is higher by 4.13 to 7.89 times than the disk-based DBMS.

온라인게임에서 개인정보보호 감리 모형

김희완,신중원,김동수 한국디지털정책학회 2012 디지털융복합연구 Vol.10 No.3

수강신청 시스템에서의 SQL 분석을 통한 데이터베이스 성능 향상 방안

김희완 국제문화기술진흥원 2020 The Journal of the Convergence on Culture Technolo Vol.6 No.4

In this paper, SQL statements are analyzed to improve database performance in the current course registration system. The performance of the current database was measured through the execution plan of the SQL statements used in the transactions related to the course registration. Through the SQL analysis, the complemented SQL statements confirmed the improved performance. Overall, the performance of the course registration database system was improved through the analysis of the execution plan, and some improvement methods of the course registration SQL were shown as test results. The improved method is to reorganize the tables and index tables related to the course registration through database tuning, and utilize the SQL function to implement an optimized system that has evolved into a course database system with improved performance. The enrollment system re-adjusted by the proposed method showed excellent results in terms of performance compared to the previous enrollment system, and the integrated performance test result reduced the response time by 1.8 to 18 times. 본 논문에서는 현재 운영되는 수강신청 시스템에서의 데이터베이스 성능을 향상시키기 위하여 SQL문 분석을하였다. 수강신청 업무와 관련된 트랜잭션들에서 사용 중인 SQL문장들을 실행계획을 통하여 현행 데이터베이스 성능을 측정하였으며, SQL 분석을 통하여 보완한 SQL문장들이 성능이 향상된 결과를 확인하였다. 전반적으로 실행계획분석을 통하여 수강신청 데이터베이스 시스템의 성능을 향상시켰으며, 수강신청 SQL 의 일부 개선방법을 시험결과로보였다. 개선된 방법은 데이터베이스 튜닝 작업을 통하여 수강신청과 관련된 테이블들과 인덱스 테이블들을 재조정하고, SQL의 기능을 활용함으로서 성능이 향상된 수강신청 데이터베이스 시스템으로 진화한 최적화된 시스템을 구현할수 있게 되었다. 제안된 방법으로 재조정된 수강신청 시스템은 이전에 운영하던 수강신청시스템에 비하여 성능적 측면에서 우수한 결과를 나타내었으며, 통합 성능 시험 결과 1.8배 ~ 18배의 응답시간 단축을 가져왔다.

A Design of University Information System Operation Audit Model based on ITIL V3

김희완,강보라,김동수,문송철 한국데이터전략학회 2018 Journal of information technology applications & m Vol.25 No.3

The purpose of constructing university information system is for improvement in diversification and throughput of information, streamlines business processes, rapid exchange of information, sharing of information, decision-making information, and securing educational facilities. Similar to business information technology system, university information system does not have a review system for sharing and overlapping investment of information. Due to the lack of project management for outsourcing and vulnerability of system suitability, system audit is absolutely needed for the university information system. This paper especially focuses on an operational phase in the audit of university information system. Additionally, we proposed operating model and checklists of the university information system based on Management Guidelines of ITIL V3 Operational and Information System. We derived the checklists of operation audit by each domain of service strategy, service design, service transition, service operation, and continual service improvement. As the result, this study appear to have more than average satisfaction the suitability results were.

Automatic Alignment System for Group Schedule of Event-based Real-time Response Web Processing using Node.js

김희완 한국정보전자통신기술학회 2018 한국정보전자통신기술학회논문지 Vol.11 No.1

A web application running on the Internet is causing many difficulties for a program developer, and it requires to process multiple sessions at the same time due to the occurrence of excessive traffic. Web applications should be able to process concurrent requests efficiently and in real time. Node.js is a single-threaded server-side JavaScript environment implemented in C and C ++ as one of the latest frameworks to implement event models across the entire stack. Nodes implement JavaScript quickly and robust to achieve the best performance using a JavaScript V8 engine developed by Google. In this paper, it will be explained the operation principle of Node.js, which is a lightweight real-time web server that can be implemented in JavaScript for real-time responsive web applications. In addition, this application was practically implemented through automatic alignment system for group scheduling to demonstrate event-based real-time response web processing.

하퇴절단 의족착용자의 보행분석

김희완 경복대학 2002 京福論叢 Vol.6 No.-

The aim of this study is to present the basic reference data of age and specipic gait parameters for below-Knee amputees. The basic gait parameters were extracted from 10 Adult, 10 patients, 50 to 60 years of age using VICON 512 Motion Analyzer. The results were as follows; 1) The mean Cadence of the Adult to the amputees patients were 113.5±3.8 steps/min, to 75.81±28.10 steps/min. 2) The mean Walking Speed of the Adult to the amputees patients were 1.30±0.12m/s, to 0.45±0.28 m/s. 3) The mean Stride Length of the Adult to the amputees patients were 1.35±0.08 m, to 0.66±0.31m. 4) The mean maximal angles of joint on the pelvic tilt for different Adult or amputees patients were 9.80±2.08˚ to 7.75±2.06˚(p<0.05) 5) The mean maximal angles of joint on the hip flexion motion for different Adult or amputees were 22.62±4.97˚ to 27.65±4.22˚(p<0.05) 6) The mean maximal angles of joint on the knee flexion motion for different Adult or amputees were 55.78±3.56˚ to 55.49±5.12˚(p>0.05) 7) The mean maximal angles of joint on the ankle dorsiflexion motion for different Adult or were 12.47±2.79˚ to 13.39±2.21˚(p>0.05) 8) The mean maximal angles of joint on the ankle plantarflexion motion for different Adult or amputees patients were 18.21±6.17˚ to 19.76±8.83˚(p>0.05)

작업치료사 수요공급 개선방안에 관한 연구

김희완 경복대학 2003 京福論叢 Vol.7 No.-

우리나라 작업치료사는 의료기사법에 의하여 의료기사로 분류되어 국가에서 면허가 발급되고 있다. 우리나라도 고령화 사회에 진입하고 있으며 복지국가건설이란 국가시책을 달성하기 위하여는 보건의료 인력의 체계적인 관리가 필수적이다. 최근 몇 년 사이 작업치료학과는 급속히 증가하였으며 이에 따라 작업치료사의 수도 급증하였다. 그러나 작업치료 취업기관은 정체되어 수요와 공급의 불균형으로 취업환경이 열악한 것이 현 실정이다. 본 연구는 작업치료사의 수요와 공급에 관한 현황을 파악하여 한국보건의료발전과 국민건강에 적정한 작업치료사 수요 공급이 이루어질 수 있도록 능동적인 대처방안을 모색하여 보았다. 첫째, 우리나라와 외국의 취업실태 및 근무환경, 인구100.000명당 적정 작업치료사의 수 등 기초 자료가 준비하여야 한다. 둘째, 보건복지부, 교육인적자원부, 노동부 등 관련 부서와의 협조가 필요하다. 셋째, 보건의료 관계기관에 대한 홍보가 필요하다. 넷째, 적정한 작업치료 의료보험수가로 개선되어야 한다. 다섯째, 보건소에 작업치료실이 설치되어야 한다. 여섯째, 정신작업치료, 수부작업치료 등 작업치료 영역이 확대되어야 한다. In Korea, the occupational therapist is classified as a medicine technician under the Law of Medicine Technician, and the state issues licenses. It is imperative to manage human resources in the health and welfare area systematically to prepare for an aging society and to accomplish the national policy of constructing a health and welfare state. Recenthly, the number of university occupational therapy departments has increased enough employment organizations for these professionals, the employment environment for occupational therapists has become very poor. This study investigated the current demand-and-supply status for occupational therapist and searched for an active counterplan to achieve a balance in demand and supply for occupational therapists to advance clinical health and welfare in Korea. First, basic data have to be prepared, such as the actual condition of employment in Korea and in other countries, and the optimum number of occupational therapists per 100.000 people, etc. Second, it is necessary to cooperate with the related government agencies, such as the Ministry of Health and Welfare, the Ministry of Education and Human Resources Development, and the Ministry of Labor. Third, good public relations with related institutions of health and welfare is needed. Fourth, the medical fees charged by health insurance firms have to be determined properly. Fifth, all public health centers should have at least one occupational therapy room. Sixth, the treated area should be expanded, for example, occupational therapy for mental or hand, and so on