고객 우선 인터넷 비즈니스 구축 방법론: I사 사례를 중심으로

이충석,이희석,Lee, Choong-Seok,Lee, Hee-Seok 한국경영정보학회 2001 Information systems review Vol.3 No.2

인터넷의 등장으로 기업의 전통적 비즈니스 방식이 변화하고 있다. 인터넷 비즈니스는 인터넷 기술을 기업 내부 및 기업 간 비즈니스 프로세스에 활용하여 정보 제품 및 서비스를 거래한다. 인터넷 비즈니스 환경에서는 인터넷웹 사이트가 비즈니스의 출발점이 된다. 변화하는 고객 요구 사항 분석과 이를 반영한 웹 사이트 개선 활동은 인터넷 비즈니스 경쟁력 유지의 핵심이다. 현재까지 제안된 방법론들은 신규 인터넷 비즈니스 구축을 주목적으로 하며, 고객요구에 대한 분석이 제시되지 못하고 있다. 본 연구는 고객 우선 인터넷 비즈니스 구축 방법론을 제안한다. 본 방법론은 고객 분석, 가치 분석, 웹 설계, 구현 설계, 구축 단계로 구성된다. 각 단계의 세부 절차를 I 사이트 사례를 통하여 제시하였다. 본 연구는 기존 방법론과 달리 고객 분석 단계와 시나리오 기반의 요구 분석이 특징이며, 다음과 같은 의의를 가진다. 첫째, 본 방법론은 고객 중심의 인터넷 비즈니스 운영 및 개선에 효과적으로 활용 가능하다. 둘째, 시나리오의 활용으로 인터넷 비즈니스 시스템의 핵심인 네비게이션 설계를 사용자 중심적으로 향상 가능하다.

CBN 숫돌에 의한 측면연삭가공에 관한 연구

이충석(Choong-Seok Lee),김창수(Chang-Su Kim),박원규(Won-Kyue Park),이종찬(Jong-Chan Lee),최환(Hwan Choi) 한국기계가공학회 2012 한국기계가공학회지 Vol.11 No.3

One of the problems in the grinding process using the machining center(MC) with a small diametric wheels is machining error due to decrease of the quill diameter. In this thesis, side-cut grinding is performed with a vitrified bonded CBN wheel on the machining center to establish the basis of the grinding using MC. The grinding force and machining error are investigated experimentally for the change of the machining condition. It is possible to estimate the machining performance by the ratio of the setting depth of cut and actual depth of cut. In addition, the relation between normal grinding force and machining error is presented by the experimental formula.

퍼지-AHP를 활용한 구직자의 기업평가 모형 개선 연구

이충석(Choong seok Lee),류옥현(Ok hyun Ryou) 한국산업경영시스템학회 2015 한국산업경영시스템학회지 Vol.38 No.1

This study is conducted to suggest ways to mitigate the mismatch phenomenon between job seekers who want to find right company for themselves and companies looking for appropriate new employees. For this purpose, this study improves the company assessment framework reflecting job seekers interests by using fuzzy analytic hierarchy process. The improved evaluation framework is a three-level hierarchical structure, where there are 4 groups at the top level, 12 factors at the intermediate level and 36 indexes at the bottom level. For the empirical analysis of the applicants preferences based on the improved model, a survey for F-AHP analysis is carried out to university students and then priorities of components in the evaluation model are calculated. Moreover, the differences of priority of the company assessment framework are analyzed for different genders, college years, and major divisions. The results show that job seekers' most concerning factors are wages, stability, working environments, and labor deal, which are ranked highly in this order and the differences in preferences for each type of job seekers (genders, college years, and major divisions) are obvious. The results also show that the male prefers wages to environment, on the other hand female does working environment to wages.

원통연삭시 연삭휠의 종류에 따른 연삭 가공특성에 관한 연구

이충석(Choong-Seok Lee),채승수(Seung-Su Chae),김택수(Taeck-Su Kim),이상민(Sang-Min Lee),박휘근(Hwi-Keun Park),이종찬(Jong-Chan Lee) 한국기계가공학회 2008 한국기계가공학회지 Vol.7 No.1

This paper reports some experimental results of cylindrical external grinding using CBN wheels. Many experimental studies for surface grinding have been done, but not for the cylindrical grinding due to the difficulty of grinding force measurement. In this paper a new experimental device has been proposed for the grinding force measurement in cylindrical grinding. The cylindrical grinding experiments were carried out at various grinding conditions with several CBN grinding wheels. The experimental results indicate that the CBN wheels with smaller grains result in the higher grinding forces in both SCM415 and STD11 workpieces. The grinding forces of all wheels were proportional to the infeed speeds and the difference of each wheels was prominent at high infeed speed for SCM415.

R&D 비즈니스 모델 구성요인의 상대적 중요도에 대한 연구

이충석(Lee, Choong-Seok),윤재영(Yoon, Jae-Young),고혁진(Ko, Hyuk-Jin) 한국산학기술학회 2012 한국산학기술학회논문지 Vol.13 No.6

본 연구에서는 중소제조기업을 대상으로 R&D 비즈니스 모델을 구성하는 요인의 상대적 중요도를 분석하였 다. 또한 표본을 기업과 기술의 특성에 따라 그룹으로 분류하여 비즈니스모델의 구성요인의 중요도가 차이가 나는가 를 비교분석하였다. 연구 결과 전체적으로는 기술개발의 사업화 성과에는 마케팅역량이 가장 중요한 요인으로, 인프 라가 상대적으로 중요도가 낮은 것으로 나타났다. 또한 세부그룹 간 비교에서는 기술과 기업의 특성 그리고 시장환 경에 따라서 비즈니스모델 구성요인의 상대적 중요도는 다르게 나타났다. 따라서 정부가 R&D 자금을 지원 할 때, 기존의 기술개발 자금만을 지급하는 방식에서 벗어나 마케팅역량을 강화하고 기업과 기술의 특성 그리고 시장의 환 경변화에 능동적으로 대응할 수 있는 비즈니스 모델에 대한 설계지원에 중점을 두어야 할 것이다. This study analyses the relative importance of R&D business model of the small and medium manufacturing firm. We also compare samples by classifying by its properties, technology and market circumstance. The most important factor of the R&D business model is marketing factor and infrastructure factor is relatively less important. Also the relative importance of the R&D business model is different according to firm's properties and technology. So when government establishes the R&D policy, he focuses on designing the R&D business model.

Nano CNC Grinding Machine 용 고속 유정압 스핀들 개발-Ⅰ

이충석(Choong-Seok Lee),문홍만(Hong-Man Moon),조용권(Yong-Kwon Cho),조현택(Hyun-Taek Cho),백영종(Yung-Jong Baek),채승수(Seung-Su Chae),이종찬(Jong-Chan Lee) 한국기계가공학회 2006 한국기계가공학회 춘추계학술대회 논문집 Vol.2006 No.-

This paper reports some progress on the development of hydrostatic high speed spindle for "Nano CNC Grinding Machine". The amount of fluid required, the load to be carried, and the temperature rise were calculated to determine the gab of the hydrostatic bearing. A prototype hydrostatic bearing was assembled and a series of experiment were performed. At 10,000rpm, the temperature rise on the front bearing and rear bearing were 4.2℃ and 5.2℃, respectively. The measured rotational error was 0.4㎛ and the thermal displacement on radial direction was 1.8㎛. These results indicate that the high speed hydrostatic bearing developed in this research in applicable in practice.

SiC 연삭특성에 관한 연구

이충석(Choong-Seok Lee),채승수(Seung-Su Chae),박세진(Se-Jin Park),김종표(Jong-Pyo Kim),오중표(Joong-Pyo Oh),이종찬(Jong-Chan Lee) 한국기계가공학회 2006 한국기계가공학회 춘추계학술대회 논문집 Vol.2006 No.-

This study reports the grinding characteristics of silicon carbide (SiC) using diamond grinding wheel. Grinding experiments were performed at various grinding conditions including grinding directions(up grinding, down grinding), table speeds and depth of cuts. The grinding forces at various table speed and depth of cut were measured under fixed material removal rate. The surface roughnesses at various table speed and depth of cut were obtained. The experimental results show that the grinding forces were lower at the higher table speed and lower depth of cut under same material removal rate. The surface roughnesses were worse at the higher table speed, but it was not related with depth of cut.

탭핑센터 진동해석에 관한 연구

이충석(Choong-Seok Lee),채승수(Seong-Su Chae),김택수(Teak-Su Kim),이상민(Sang-Min Lee),박휘근(Hwi-Keun Park),조현택(Hyeon-Teak Jo),이종찬(Jong-Chan Lee) 한국기계가공학회 2009 한국기계가공학회 춘추계학술대회 논문집 Vol.2009 No.6

This paper reports a vibration analysis for structural stability examination of tapping center. The Pro-Engineer Mechanica Version 2.0 was used for drawing 3D modelling and vibration analysis. Auto mesh conditions were set up before the vibration analysis. The vibration analysis was performed for two types of tapping center, the frist one with bar type bracket reinforcement and the other one without the bar type bracket reinforcement. The analytical results indicate that the natural frequency of the tapping center with bar type bracket reinforcement is lower than that of without bar type bracket reinforcement.

특별섹션 논문 : 구직자 유형별 직장선택 요인에 대한탐색적 연구

이충석 ( Choong Seok Lee ),류옥현 ( Ok Hyun Ryou ) 한국중소기업학회 2011 中小企業硏究 Vol.33 No.4

본 연구는 구인·구직의 중계(Matchmaking)에 실질적인 도움을 위하여 구직자의 성별, 연령별, 지역별, 대학·전문학별, 전공계열별 직장선택의 주요 고려 요인의 차이점을 분석하고자 하였다. 기존 연구에서 개발된 구직자 관점의 기업평가 모형을 활용하여 구직자 635명을 대상으로 AHP를 적용한 설문을 수행하여 구직자 유형별 고려요인의 차이를 분석하였다. 본 연구의 결과 다음 4가지 구직자관점의 의의를 찾을 수 있었다. 첫째, 구직자는 구직의사결정에서 많은 정보를 필요로 하나, 현재 얻을 수 있는 정보가 제한되어 있다는 것이다. 구직자에게 추가 정보를 효율적으로 제공한다면 보다 합리적인 구직의사결정이 가능할 것이다. 둘째, 구직자 유형별 직장선택 요인에 대한 중요도의 차이가 상이하다는 것이다. 특히 성별과 대학학제별 직장선택 요인의 경우 지표수준에서 차이가 나타났다. 이는 구직자 특성에 따른 직장선호 조건이 다르므로, 구직자 특성에 반영한 직장 추천이 필요함을 의미한다. 셋째, 지역별 직장선호도의 차이가 나타났으므로, 지역기업에서는 이를 반영하여 구인 시 활용하는 것이 필요하다. 넷째, 직장 경험 유무에 따라 중요도의 차이가 분석되었으며, 이는 직장경험이 없는 구직자를 대상으로 올바른 직장에 대한 인식과 직장선택을 위한 교육이 필요하고 볼 수 있다. 본 연구는 구직집단에 따라서 중요하게 고려하는 요인에 대한 차이가 존재한다는 것을 확인하였고, 한 집단에게 좋은 직장이 반드시 다른 집단에게도 좋다고 할 수 없음을 의미한다. 본 연구의 결과를 활용하여 집단 또는 개인의 특성을 파악하고 그에 합당한 직장 또는 직업을 제공할 수 있는 서비스의 제공 또한 현재의 중소기업과 구직자의 미스매치를 해결할 수 있는 방향과 정책 설정에 활용될 수 있을 것으로 기대된다. If a job seeker can easily access to or be provided with the information about a company of interest for being employed and know some companies provide what they want or other companies do not, it would be very helpful for choosing one among job alternatives. Even though lots of information on a specific company is available on the web or from enterprise information providers, this information mainly includes some specific contents which someone with a specific interest wants. Corporate information has been provided for several purposes in a variety of reasons. One is the information about company financial status for better and safer investment and the other may be the general overviews on company web sites for improving company image in public and etc. There is little corporate information available which is tailored to fit what a specific job seeker wants and none the less, it`s hard to find any service to compare alternative companies according to any job seeker`s preferences. In reality, well-known or major companies are preferred by job seekers just because job seekers are either familiar to the name and the image of the company or exposed to the company commercial advertisements. Therefore, Small and medium enterprises (SMEs), which have potentials of significant growth in future and providing better work environments, do have few means to deliver company information to potential employees, so have difficulties in recruiting preferred human resources. This research analyzes the differences of job seeker`s major concerning factors due to the job seeker`s differences of gender, age, region, university or major department. Using the company assessment framework previously developed by authors, an Analytic Hierarchy Process (AHP) survey is performed for job seekers and the differences of priorities of major concerning factors are analyzed. The company assessment framework is a 3 level hierarchical structure composed of 4 groups, 12 factors and 32 indexes. The four groups of the relative factors are each as following, (1) corporate types and sizes, (2) job stability and growth, (3) working conditions and (4) wage level and benefits. The factor(second) level consists of corporate type, size, stability, growth potential, profitability, credit, vacation policy, working environments, promotion, wages, benefits and educational supports. Over one thousand students who is going to find jobs near future in the second half of 2010 school year are surveyed and investigated for research purposes. The CI(Consistent Index) values and the individual weights in AHP analysis are calculated. Among one thousand survey papers collected, finally 635 papers are analyzed as 365 survey papers with CI values above 0.1 are excluded. ANOVA (Analysis of variance) is mainly used for analyzing the differences between job seekers types, and the Scheff post-analysis is performed in case of needing further analysis. From the re sults of this analysis, following four significant implications are found regarding the intent of job seekers First, the job seekers need more information in decision making than the limited information which is currently available. If additional information is effectively provided, job seekers are able to make more rational decisions. The priorities for the first level four groups are corporate types and sizes (0.274) stability and growth (0.265), working conditions (0.225), salary and welfare (0.236) in order. The priorities of the second level factors are determined as corporate type (0.153), size (0.120), wages (0.099), work environments (0.083), stability (0.082), and benefits (0.077) in the order. The top five of 12 factors accounts for 53.7 percents of the total significance. In the level three, the top 10 indices accounts for 50.34%, but the importance of sub-indices is quite big 49.66%. In general the company information for sub-indices of 49.66% is harder to obtain than that of the top 10 indices. This priority analysis shows: utilizing more information is critical for reasonable decision making but, the difficulty of the process of obtaining information or imperfect of the information provided makes this process difficult. Second, job seeker`s major concerning factors are different according to the job seeker`s gender, age, region, university or major department. In particular, the differences of priority in the ``index`` level of the company assessment framework are clear for different gender or type of colleges. Therefore, the job recommendations need to reflect job seekers characteristics. For different gender, only the working conditions in the first group level is detected with significant difference. In other words, the preference for corporate types and sizes, stability and growth, salary and welfare between the genders does not appear, but female job seekers consider the working conditions more seriously than male ones do. In the second factor level, the preference for corporate types, vacation policy and working environments is different between genders. Compared to women, men considers the corporate types more seriously and women think vacation policy and working conditions are more important when searching jobs. For different types of colleges (four-year or two-year college), the stability and growth in the first group level is detected with meaningful difference. Four-year college students compared to two-year college students are analyzed to consider the company stability and growth important. In the second factor level, two-year college students consider corporate size and vacation policy more seriously and four-year college students think three indices(stability, growth potential and profitability) are more important. Third, there were regional differences in job preferences. Local businesses need to take advantage of these differences, when they want to hire better employees. The ANOVA analysis for the regional differences shows that significant difference is detected in the first "group" level factors: stability and growth, working conditions and salary and welfare. In order to verify significance of differences between regional groups, the Scheffe post-analysis is conducted, but no significant differences are drawn in the second factor level. Significant differences are found in the third index level entries: the corporate type, size, profitability, credit grade, and paid vacation, work location, promotion, employee tuition support. Especially, differences in importance of profitability are appeared in the order of regions: Chungcheong, Kyungnam, Honam, Metropolitan, and Central regions. Job seekers in Metropolitan think working conditions and salary and welfare more seriously than the other regions. Forth, the significant differences are caught according to the job seeker`s work experience, so it show the need of educational program like right job awareness for job seekers without work experience This research shows and confirms that major job concerning factors vary due to the difference of job seeker`s various environmental states. This means good jobs for one group of job seekers might not be good for other groups. The implications of this research can be used to provide job offering services based on characterizing individual or group of job seekers, to reduce currently focused problem, job mismatching between job seekers and job opening companies and help policy-makers to tackle the problem of unemployment of young people. In the long term perspective, we hope that the Korean SMEs suffering the human resource shortage will have more chances to hire new capable employees easily and that job seekers will be given a reasonable model for evaluating job-opening alternatives.

탭핑센터 진동해석에 관한 연구

이충석(Choong-Seok Lee),채승수(Seong-Su Chae),김택수(Teak-Su Kim),이상민(Sang-Min Lee),박휘근(Hwi-Keun Park),조현택(Hyeon-Teak Jo),이종찬(Jong-Chan Lee) 한국기계가공학회 2009 한국기계가공학회 춘추계학술대회 논문집 Vol.2009 No.6월

This paper reports a vibration analysis for structural stability examination of tapping center. The Pro-Engineer Mechanica Version 2.0 was used for drawing 3D modelling and vibration analysis. Auto mesh conditions were set up before the vibration analysis. The vibration analysis was performed for two types of tapping center, the frist one with bar type bracket reinforcement and the other one without the bar type bracket reinforcement. The analytical results indicate that the natural frequency of the tapping center with bar type bracket reinforcement is lower than that of without bar type bracket reinforcement.