900 ㎒ 대역 RFID Reader 구현

김재준(Jea-jun Kim),이일근(Ill-Keun Rhee),이영훈(Young-hun Lee) 한국정보기술학회 2006 한국정보기술학회논문지 Vol.4 No.2

Radio frequency identification(RFID) is a generic term that is used to describe a system that transmits the identity(in the form of a unique serial number) of an object or person wirelessly, using radio waves. It's grouped under the broad category of automatic identification technologies. Specially 900MHz the RFID system of substitute actor from the EPCglobal which is a ISO which is a international standardization organization because is expected with the fact that it will bring the epoch-making change of the circulation goods and an international civil standardization organization is to in the process of establishing a radio interface standard. Against the EPC Class 1 Generation 1 radio interface where the standard establishment by law possibility is high it analyzed from the dissertation which it sees and in the base which will reach and the substitute actor RFID Reader and the RFID antenna and the tag of the Alien company it did 900㎒ plan it produced it used it measures the result which it was visible.

건축 설계사무소 실무자의 이직의도 결정요인 분석

서희창,오중근,김재준,Seo, Hee-Chang,Oh, Jung-Keun,Kim, Jea-Jun 한국건설관리학회 2012 한국건설관리학회 논문집 Vol.13 No.5

오늘날 기업들은 우수한 인재를 어떻게 유지할 것인가에 많은 노력을 기울이고 있으며, 특히 이직과 관련하여 가장 높은 상관관계를 가지는 이직의도를 파악하는데 초점을 맞추고 있다. 건축 설계사무소의 경우 타 산업현장과 달리 작업에 대한 강도가 크며, 새로운 인재를 육성하는데 시간이 많이 소요될 뿐만 아니라 유연한 노동시장 때문에 쉽게 이적할 수 있다는 특징을 보인다. 통계청에서 제공하는 산업분류별 이직률을 살펴보면 건축 설계사무소가 포함된 전문, 과학 및 기술 서비스업은 전체 산업의 이직률 평균에 비해 상대적으로 높은 것을 알 수 있다. 그러나 지금까지의 이직의도는 타 산업 분야의 종사자를 중심으로 연구가 진행되었으며, 건축 설계사무소 실무자의 이직의도와 관련된 연구는 매우 부족한 실정이다. 이에 본 연구에서는 건축 설계사무소 실무자의 이직의도에 영향을 미치는 결정요인을 도출하고 이를 토대로 각 요인별 중요도 분석을 통해 실무자의 이직의도를 객관적으로 파악하고 대규모와 중소규모 건축 설계사무소의 차이점을 비교분석하는 것을 목적으로 하였다. Today organizations are making considerable efforts in order to maintain excellent talent, and in particular, they are focusing on understanding their intentions of changing jobs which are most highly correlated with job turnover. In the case of architectural design firms, its intensity of work is very high unlike industrial settings, and it not only takes much time to cultivate new men of talent and but also is characteristic that employees can change livery easily because of the flexible labor market. The turnover rated by National Statistical Office indicates that specialized, scientific and technical service industry including the architectural design firm has a relatively high turnover rate compared to the average of the turnover rate of the overall industries. However, studies on intentions of changing jobs until now were conducted focused on employees engaged in other industrial areas, and it is true that studies regarding intentions of changing jobs of practitioners of architectural design firms are very insufficient. In this context, the present study aimed to draw determinants affecting intentions of changing jobs of practitioners of architectural design firms, to objectively understand the practitioners' intentions of changing jobs through importance analysis by each factor based on this and to make a comparative analysis of differences between the large scale architectural design firms and the small and medium sized architectural design firms.

BIM 도입 후 설계사무소 실무자들의 직무스트레스 분석

서희창,오중근,김재준,Seo, Hee-Chang,Oh, Jung-Keun,Kim, Jea-Jun 한국건설관리학회 2012 한국건설관리학회 논문집 Vol.13 No.4

오늘날의 기업들은 무한 경쟁과 불확실한 경영환경 속에 있으며, 이로 인해 실무자들은 다양한 직무요구들과 스트레스에 노출되어 있다. 특히 설계사무소 직원들은 타 산업현장과 달리 작업에 대한 강도가 커서 육체적으로 힘들고, 타 산업의 주 5일제 근무와 달리 공정이 상호 관련되어 있기 때문에 정기적인 공휴일과 휴가가 보장되기 어렵다. 또한 최근 건설 산업에서는 BIM이 도입되면서 업무환경 및 범위 그리고 역할 등과 같은 개인적 역할뿐만 아니라 조직차원에서의 다양한 변화가 요구되기 때문에 이로 인한 직무스트레스의 범주 및 요인 또한 변하고 있는 상황이다. 이에 본 연구에서는 BIM을 도입 한 이후 설계사무소 실무자들의 직무스트레스 수준 및 유발요인을 확인하여 경력, 직급, 성별, BIM 교육 및 BIM 템플릿 유/무 등과 같은 특성에 따른 직무스트레스를 파악하였다. 이는 추후 활용도가 높을 것으로 예상되는 BIM기반 프로젝트의 주 참여자인 설계사무소의 업무환경을 구축하는데 의의가 있다. Today, companies exist amid unlimited competition and uncertain adminstration environment, so hands-on workers are being exposed to various job requirements and stress due to this. Especially, employees in the design firm are physically difficult because of heavy working intensity unlike other industrial field, and because the process is interrelated unlike working of a five-day workday of the other industry, it is difficult to guarantee periodic holidays and vacation. In addition, recently, while BIM is introduced in the construction industry, various changes in the individual role as well as organizational dimension such as business environment and scope & role, etc. are required, so it is the actual situation that the category and factors of job stress due to this are being also changed. Accordingly, this research has grasped important and weak sectors according to characteristics such as career, position, gender, education and existence/nonexistence of BIM template, etc. by confirming a job stress level and inducing factors of hands-on workers at the design firm. This research has a meaning in constructing a business environment of a design firm that is a main participant of BIM-based projects that are expected to have high utilization in the future.

구조안전진단에서의 3D 레이저 스캐너 투입 성과 분석

성도윤,백인수,김재준,함남혁,Seong, Do-Yun,Baek, In-Soo,Kim, Jea-Jun,Ham, Nam-Hyuk 한국BIM학회 2021 KIBIM Magazine Vol.11 No.3

This study quantitatively analyzes the work performance of the structural safety diagnosis team that diagnoses pipe racks. To this end, a method for evaluating the performance of the structural safety diagnosis team using the queuing model was proposed. For verification, the case of applying the existing method and the method of introducing a 3D laser scanner for one site was used. The period, number of people, and initial investment cost of each project were collected through interviews with case project experts. As a result of analyzing the performance of the structural safety diagnosis team using the queuing model, it was possible to confirm the probability of delay in the work of each project and the amount of delayed work. Through this, the cost (standby cost) when the project was delayed was analyzed. Finally, economic analysis was conducted in consideration of the waiting cost, labor cost, and initial investment cost. The results of this study can be used to decide whether to introduce 3D laser scanners.

채소 자동결속기 개발

김용석(Yong-Seok Kim),김재준(Jea-Jun Kim),박태표(Te-Pyo Park),양순용(Soon-Young Yang) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5

In this paper, we propose an automatic vegetable-bundling mechanism that makes use of heat melt sticking. The proposed mechanism is made of three modules for aligning, shaping, and bundling. Using the SMO(SimDesigner Motion) module, we optimize condition of mechanical movement of the bundling mechanism. We manufactured the prototype of the automatic bundling machine. Also we carried out directly the field test for verification of performance in farmhouse which produces vegetable, and we got satisfied result. This machine will be commercialized and announced soon.

채소 자동결속기의 개발(I) : 메커니즘 설계

김용석(Yong-Seok Kim),박태표(Te-Pyo Park),김재준(Jea-Jun Kim),박성호(Sung-Ho Park),양순용(Soon-Young Yang) 한국생산제조학회 2009 한국생산제조학회지 Vol.18 No.2

RTLS RFID 리더기 적용을 위한 고해상도 방향 탐지 기법 연구

신종민(Jong-min Shin),김재준(Jea-jun Kim),최인식(In-sik Choi),이일근(Ill-Keun Rhee) 한국정보기술학회 2007 Proceedings of KIIT Conference Vol.2007 No.-

본 논문에서는 MUSIC 알고리즘을 이용한 RFID 시스템 구현을 위한 사전 시뮬레이션을 수행하였다. 현재의 RTLS(Rreal Time Iocation System)은 삼각 측정법을 이용하여 방향을 탐지하고 있지만, 제안된 방식에서는 고해상도 배열 신호처리기법인 MUSIC 알고리즘을 이용하여 방향을 찾아내게 된다. 본 논문에서는 시뮬레이션을 통하여 실제 RFID 시스템 구현을 위해 필요한 배열 안테나의 센서 개수와 센서간의 거리, 요구되는 SNR을 제시하였다. In this paper, we performed the simulations about the RFID direction finding system using MUSIC(MUltiple SIgnal Classification) algorithm. The present RTLS(Real Time Location System) usually finds the direction of Tags using trigonometric measurements, but we use MUSIC which is the one of the high resolution array signal processing technique. In the simulations, we observed the effects of MUSIC performance to obtain direction information of Tags with respect to number of array elements, the distance of array elements and SNR(Signal-to-Noise Ratio).

BIM을 도입한 건축 설계사무소의 업무환경 구축을 위한 평가모델 개발

서희창(Seo Hee-Chang),오중근(Oh Jung-Keun),김재준(Kim Jea-Jun) 대한건축학회 2012 대한건축학회논문집 Vol.28 No.5

Recently a concept called BIM(Building Information Modeling) has been largely applied to construction industry throughout the life cycle of buildings from the design phase through to the maintenance phase. In addition, BIM-based large-scale public projects has been increased with the beginning of the Yongin Citizen Sports Park Project in 2008. Also from 2012 BIM-based design obligation has been actively introduced at national level in case of construction projects which total construction expense costs over 50 billion won. Accordingly individual architectural firms have focused on adopting BIM and performing BIM-based projects. BIM is not just a modeling program and it should be approached in terms of changes in Work Environment by architectural design firms. However, many of them have not realized the fact. Thus this study has conducted interviews with professionals after analysing previous studies and deducted factors and indicators for establishing BIM-based work environment of architectural design firms. And it has developed an evaluation model based on the calculation of weights of these indicators that resulted from a hierarchical analysis (Analytic Hierarchy Process: AHP).

BIM모델을 통한 간섭체크의 문제점 및 개선방안

안혜균(Ahn, Hye-Kyun),서희창(Seo, Hee-Chang),김주형(Kim, Ju-Hyung),김재준(Kim, Jea-Jun) 대한건축학회 2010 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.30 No.1(계획계)

장천공이 동반된 Churg-Strauss 증후군

박정훈 ( Jung Hoon Park ),정윤석 ( Yun Seok Jung ),김양기 ( Yang Ki Kim ),이영목 ( Young Mok Lee ),황정화 ( Jung Hwa Hwang ),김기업 ( Ki Up Kim ),김동원 ( Dong Won Kim ),어수택 ( Soo Taek Uh ),김재준 ( Jea Jun Kim ) 대한결핵 및 호흡기학회 2009 Tuberculosis and Respiratory Diseases Vol.66 No.5

Churg-Strauss syndrome (CSS) or allergic granulomatous angiitis is a rare syndrome that is characterized by hypereosinophilic systemic necrotizing vasculitis affecting small- to medium-sized arteries and veins. In general, it occurs in individuals with pre-existing allergic asthma. When CSS appears in patients, it has the following characteristics: eosinophilia of more than 10% in peripheral blood, paranasal sinusitis, pulmonary infiltrates, histological proof of vasculitis with extravascular eosinophils, and mononeuritis multiplex or polyneuropathy. Therapeutic trials dedicated to Churg-Strauss syndrome have been limited due to the rarity of this disorder and the difficulty in making a histological diagnosis. Proper treatment of patients with CSS is not widely known. In this case study, we report on our experience with an unusual patient case, characterized by purpura and a perforation of the small intestine after inadequate steroid therapy.