Recently, industrial business environments have rapidly changed and face severe competitive challenges. The effective inventory system enables to product and deliver the products quickly for meeting due date of customer's order in this environment. This study have developed a web-based inventory system framework using RFID for a plastic injection molding industry. The system analysis inventory problem issues such as inventory planning, warehouse assignment. In this study, web-based inventory system using Java language is proposed and implemented. As the result of implementation of the system, we expected that it manages to inventory planning continually and systematically.

In this paper, the u-Service system that is based on location-aware technology is designed for a silver town. It provides services such as emergency call, intelligent elevator operation, and hands-free door access based on the location of the residents with personal device as called smart tag. It can also be applied to other service areas such as the location-aware u-Service for Hospital, high-rising complex building, APT, etc.

Recently, an industrial production-distribution planning problem has been widely investigated in Supply Chain Management(SCM). One of the key issues in the current SCM research area is reverse logistics network. This study have developed a simulation model for the reverse logistics network. The simulation model analysis reverse logistics network issues such as inventory policy, manufacturing policy, transportation mode, warehouse assignment, supplier assignment. Computational experiments using commercial simulation tool ARENA show that the real problems. The model can be used to decide an appropriate production-distribution planning problem in the research area.

In the research-oriented university there are various laboratories in the departments according to a major field of study Under these circumstances the budget to purchase experimental facilities has only to be distributed among research teams and then is

In the research-oriented university there are various laboratories in the departments according to a major field of study. Under these circumstances the budget to purchase experimental equipments has only to be distributed among research teams and then is spent within the confines of it without rein. However, in case of college the budget for experimental equipments needs to be considered other allocation methods because of no laboratory being managed by professor. In this paper the methodology for the rational operation of experimental equipments for college is proposed. It is composed of the following ; (1) the rational allocation method of the budget for experimental equipments in consideration of the characteristics of individual departments, and (2) the evaluation and selection of the alternative experimental equipments submitting in each department. First of all, the proposed methods are presented and then discussed with simulation results.

대학의 품질경영 혁신활동을 통해 우수한 교육서비스를 제공하고, 이해관계자가 존재하는 가치체인 안에 가치지대(Value Zone)를 확대할 수 있도록 역량을 키워야 한다. 이러한 목적을 달성하기 위해 본 연구에서는 린 6시그마(Lean 6 Sigma) 기법을 적용하고자 한다. 본 연구에서는 대학품질경영 활동에 이러한 린 식스 시그마를 적용하여 선택과 집중을 통해 우수한 학생을 육성하는 경쟁력 있는 대학으로 발전시키기 위한 전략과 방안을 제시한다.

In manufacturing industry, cutting parameters have an influence on reducing the production cost and time and deciding the quality of a final product However, owing to governmental regulations and the change of owner's cognizance, the machining safety becomes important in those fields relatively. The paper presents an intelligent operation planning system considering machining safety for milling operations. The main issue of the system is to determine the cutting parameters in achieving a balanced consideration of productivity and worker's safety. The detailed algorithm and functions of the developed system is introduced and then discussed.

대규모 표준화된 문항을 사용하는 과학과 국제 비교 연구에서 드러난 우리 나라 학생들의 성 차이가 국내 연구에서도 나타나는지 파악하기 위해 지난 30년 동안 과학 교육 관련 학술지인 한국과학교육학회지, 한국초등과학교육학회지, 한국지구과학회지, 한국생물교육학회지, 화학교육, 새물리 등에 게재된 논문 전체를 분석했다. 젠더 문제를 연구의 주제로 한 논문은 많지 않았지만, 총 279편의 논문에서 연구 결과를 성별로 제시했다. 이 중 통계적 유의미도가 검증된 225개의 논문을 2인의 연구자가 내용 분석했다. 분석 결과는 검사 문항을 사용한 조사 연구와 프로그램을 적용한 실험 연구 등으로 구분해 경향을 파악했다. 조사 연구 논문 분석 결과, 과학 지식과 태도 모두에서 국제 비교 연구와 마찬가지로 남학생이 우월하게 나타난 논문이 가장 많았다. 특히, 과학 관련 태도에서 성 차이를 보인 논문이 가장 많았고, 다음으로 과학 지식, 그리고 과학 탐구 능력에서의 성 차이를 보인 논문이 가장 적었다. 실험 연구 분석 결과, 새로운 과학 교육 프로그램의 효과에 있어서 성 차이가 나타나지 않는 논문이 가장 많았지만, 프로그램 적용 후 남학생은 인지적 측면에서 여학생은 정의적 측면에서 더 효과적으로 드러난 논문이 많았다. 여학생들의 과학 성취도 향상과 과학에 대한 태도를 긍정적으로 하는 다양한 프로그램 개발이 필요한 시점이다.

  절삭가공에서 가공조건은 가공비용의 감소와 제품 품질의 향상에 영향을 주는 주요 요인 중의 하나이다. 본 논문에서는 밀링작업을 대상으로 가공조건을 보다 효율적으로 수정하고 이를 지속적으로 향상시킬 수 있는 방법론과 이를 기반으로 개발된 작업설계시스템을 소개한다. 개발된 시스템은 (1) 표준 가공조건을 세부 공정별 요구 사항이 만족되도록 수정하고, (2) 퍼지아트맵 신경회로망 모델을 이용하여, 생성된 가공조건을 온라인(incremental) 학습한 후,

This study is resource planning of painting lines in Korean motor company using simulation techniques. The painting lines have bottle neck problems that is considered production capacity, number of lines and so on. The alternative solutions is decided by the result of simulation techniques. This Paper is focused on resource planning using simulation techniques.

비보강 조적조 건축물은 재료의 특성상 지진과 같은 횡력에 취약하지만, 국내에는 여전히 많은 조적조 건물이 존재한다. 특히 현재 남아있는 조적조 건축물의 대부분이 20년 이상 노후화됨에 따라 재해감소를 위한 경제성 있는 보강법의 개발이 요구된다. 본 논문에서는 이러 한 노후 된 조적조 건축물의 보강법의 하나로 접착형 보강재를 활용한 조적벽체의 외부 보강법을 제시하였으며, 보강효과 검증을 위해 총 6개 의 실험체를 형상비(L/H=1.0, 1.3, 2.0)를 변수로 제작하여 정적가력실험을 실시하였다. 실험결과, 보강전·후 조적벽체는 강체회전 및 미끄러 짐에 의해 파괴가 발생하였고, 접착형 보강재 부착후 벽체의 최대내력, 최대변위, 소산에너지량은 증가하여 우수한 보강효과를 확인하였다. 또 한 기존 유리섬유를 활용한 증가된 전단강도식에 착안하여 비보강 조적벽체에 대한 접착형 보강재의 설계안을 도출하여 적용을 위한 기초자 료를 제공하였다.

By attaching the adhesive retrofit material using wire and nylon to masonry walls, the changes in the shear strength of the walls were examined through experiments. In the experiment results, when the adhesion of the adhesive retrofit material was secured, the shear strength and the yield displacement ratio of the masonry walls were largely improved, and the falling of the walls did not happen, which has verified the retrofitting effect of the adhesive retrofit material.

조적조 건축물은 국내 소규모 주택의 많은 부분을 차지하지만 취성적 거동 및 낮은 연성능력으로 현재에는 사용빈도가 많이 낮아졌다. 그럼에도 불구하고 조적조 건축물의 낮은 건축비, 재료의 친환경성은 국외를 중심으로 새롭게 각광 받으면서 구조적 단점을 해결하고자 많 은 연구가 진행 중이다. 본 연구에서는 조적벽체 및 교차부 실험체를 제작하여 신축줄눈 유⋅무에 따른 구조적 거동의 차이를 확인하고, 연결철물 (스틸플레이트, 스테인리스 트위스트바) 삽입에 따른 보강효과를 검증하였다. 실험결과를 통해 스틸플레이트를 삽입한 실험체는 내력이 증가되어 실험체의 강성이 향상되었으며, 스테인리스 트위스트바를 삽입한 실험체는 연성능력이 향상되어 취성파괴가 발생하지 않 아, 연결철물 삽입에 따른 보강효과는 우수한 것으로 나타났다.

An experiment to understand how natural fiber reinforcement would influence rammed earth P-δ curves was conducted. The experiment results showed that the natural fiber reinforcement had generally increased loads of specimens and that the longer the fibers and the higher the mixing ratios, the lpad degradation after failures tend to be slowly appeared.

This study carried out a series of seismic tests to elucidate the difference of movements between two buildings with or without masonry infilled wall in reinforced concrete frames which have no quake proof plan. Both of the experimental buildings showed irreversible deformity at low drift ratio of 0.6%. The strength and stiffness of the building with masonry infilled wall were higher than those of the building without masonry infilled wall, while the ductility of the former being lower than that of the latter. Thus it led to more brittle tendency of the former.

In this study, an analytical model of a knee-brace employing disc springs and friction pads is developed. A ring-spring model proposed by Hill is adopted for the knee-brace analysis model. The cyclic response obtained from the analysis model is compared with corresponding experimental results. The comparison indicates that the suggested analytical model is capable of capturing the hysteretic behavior of a knee-brace employing ring-springs and friction pads

This study is to establish a planning methodology for rural area development with land suitability classification. Land suitability classification was carried out by introducing Geographic Information System. The planning methodology was applied to Sunheung district located in Youngpoong county, Kyongbuk Province, Korea. Land suitability classification by the GIS showed that only 29 % of present agricultural land were higher than class 2 and 71 % were in bad condition for agricultural land. Especially, 22.2 % of agricultural land were under class 5 as the lowest level and 265.2 ha of forest were possible to develop as an agricultural land. It was proved that GIS may be a powerful tool in rural planning process. In addition, it is thought that GIS can be applied to the fields of agricultural land management system in many ways.

For formulation of the rational land us2 plan in regional base, it is a basic and prior condition to categorize total planning area into some functional subregions by purposely-selected indicators. As one of quantitive approaches to the areal categorization in rural area, Principal Component Analysis(PCA) was introduced and testified its applicability through a case study on Sunheungdistrict(called as myun in Korea) area, Youngpoong-county, Kyungbuk-province, Korea. Areal analysis by PCA was carried out on rurality and urbanity of parish-level area(ri in Korea) respectively. By use of PCA analysis results, classifying matrix was made through categorization of both index scores. Among 18 ri's of the case study area, 12 was classified as rural-dominated areas, 2 as urban- dominated areas, and reamaining 3 as intermediate areas.