산업의 특성을 고려한 유비쿼터스 정보기술 활용방안에 관한 연구

이홍주,이장욱 한국산업경영시스템학회 2003 한국산업경영시스템학회 학술대회 Vol.2003 No.추계

As information technology has been developed rapidly, recognition on it"s importance has been increased. At present, information technology is being applied in various fields, playing an important role in improving results of companies" product and economic activities. Therefore, it"s the most important to propose appropriate information technology considering each industrial characteristic. As it were, it"s meaningless to apply information technology merely without regarding unique characteristic of business model and industry sector. In this paper, the method of using ubiquitous computing for industry sector will be proposed.

유사도 알고리즘을 활용한 시맨틱 프로세스 검색방안

이홍주,Mark Klein 한국경영과학회 2007 한국경영과학회 학술대회논문집 Vol.2007 No.11

One of the roles of the Semantic Web services is to execute dynamic intra-organizational services including the integration and interoperation of business processes. Since different organizations design their processes differently, the retrieval of similar semantic business processes is necessary in order to support inter-organizational collaborations. Most approaches for finding services that have certain features and support certain business processes have relied on some type of logical reasoning and exact matching. This paper presents our approach of using imprecise matching for expanding results from an exact matching engine to query the OWL MIT Process Handbook. In order to use the MIT Process Handbook for process retrieval experiments, we had to export it into an OWL-based format. We model the Process Handbook meta-model in OWL and export the processes in the Handbook as instances of the meta-model. Next, we need to find a sizable number of queries and their corresponding correct answers in the Process Handbook. We devise diverse similarity algorithms based on values of process attributes and structures of business processes. We perform retrieval experiments to compare the performance of the devised similarity algorithms.

Scenario Based Global Supply Chain Planning Process Considering Demand Uncertainty

이홍주,정호상 인하대학교 정석물류통상연구원 2013 JOURNAL OF INTERNATIONAL LOGISTICS AND TRADE Vol.11 No.1

In this paper, we propose a scenario based global supply chain planning (GSCP)process considering demand uncertainty originated from various global supply chain risks. To generate the global supply chain plan, we first formulate a GSCP model. Then, we need to generate several scenarios which can represent various demand uncertainties. Lastly, a planning procedure for considering those defined scenarios is applied. Unlike the past related researches, we adopt the fuzzy set theory to represent the demand scenarios. Also, a scenario voting process is added to calculate a probability (possibility) of each scenario. An illustrative example based on a real world case is presented to show the feasibility of the proposed planning process.

콘크리트 構造物의 混合모드 龜裂傳播모델 (第 4 報)

진치섭,오정민,이홍주 釜山大學校生産技術硏究所 1998 生産技術硏究所論文集 Vol.55 No.-

2 차원 선형탄성 균열문제에 적합한 파괴기준을 알아보기 위해, 응력확대계수 K과 K 균열파단각과 파괴하중을 최소 변형에너지밀도 기준에 의해 구하는 유한요소 프로그램, SED를 개발하였다. 이 프로그램에서는, 6절점 삼각형 특이요소를 사용한 균열선단을 제외한 다른 부분에서는 고전적인 8절점 사변형 등매개변수 요소를 사용하였다. SED의 결과를 최대 원주방향 인장응력 기준과 최대 에너지 해방률 기준에 의한 프로그램의 결과차, 그리고 Jenq & Shah의 실험결과와 동일한 조건에서 비교하였다. 본 연구는 혼합모드 균열전파 모델의 계속적인 연구로서 이전의 최대 원주방향 인장응력 기준과 최대 에너지 해방률 기준에 의한 해석치와는 다소 차이가 있으나 전반적으로 Jenq 와 Shah의 실험치와 비슷한 양상을 보였다. To find out an adequate failure criterion in two-dimensional linear elastic crack problems, finite element program, SED, which determines stress intensity factors K, K, crack angle and peak load by the minimum strain energy density failure criterion were developed. In this program, the conventional quadratic isoparametric elements were used in all regions except the crack tip zone where triangular singular elements with 6 nodes were used. The results of SED were compared with the results of those which followed by the maximum circumferential tensile stress criterial and those by the maximum energy release rate criteria and those by Jenq and Shah's experiments of the same geometry and material properties. This study which has kept continuously as mixed mode crack propagation models is somewhat different from previous results, maximum circumferential tensile stress criterial and the maximum energy release rate criteria, but SED's result is generally similar to Jenq & Shah's experiments.

TRACTOR 操縱席 設計에 關한 硏究

李弘柱 안성산업대학교 1984 論文集 Vol.16 No.-

Tractor 運轉席의 振動으로 因한 身體的 障碍를 防止하며 Tractor의 作業能率을 向上시키기 위하여 아래와 같은 結果를 얻었다. 固有振動數 ω_n = 10.58^rad/sec Damping ratio ζ= 0.25 Damping coeff c = 433^Nsec/m Static deflection χ= 0.0876m Spring constant K = 9162^N/m Weight(Seat + operator) W = 803N This study is aimed to establish standards for the tractor seat; To prevent the operator's physical dangers from vibrations of tractor and to enhance the efficiency of tractor and to enhance the efficiency of tractor operation. Tractor operator is to be separated from the seat as the vertical acceleration is greater than the Gravitational acceleration ( g=9.81 m/sec^2), then comes the danger. The suitable standards for design of tractor seats are listed as follow; 1) Natural Frequency : ω_n = 10.58 rad/sec 2) Damping Ratio : ? = c/c=0.25 3) Damping coefficient : c = 433 N.sec/m 4) Static deflection : χ = 0.0876m 5) Spring constant : K = 9162 N/m 6) Weight (seat+operator) : W=803N 7) Vertical acceleration : Less than 0.797g where g=9.81 m/sec^2.

The Influence of Social Presence on Customer Intention to Reuse Online Recommender Systems: The Roles of Personalization and Product Type

이홍주 M E SHARPE INC 2011 International journal of electronic commerce Vol.16 No.1

농업기계 보관창고 규모설정

이홍주,이성범,김성엽 안성산업대학교 2002 論文集 Vol.33 No.-

This study was conducted to analyze the storage housing scale for farm machinery, and to present the basic information for the construction of multipurpose storage housing suitable to the individual farmers by identifying current problems. The results of this study are summarized as follows; 1. To make standard for the size calculation and the design guideelines of storage facilities, the basic module for the standard drawing was established by the patterns of storage facilities. 2. The proper area for farm machinery storage housing was determined as 78㎡, 108㎡, and 148㎡ according to the scale of farm area of 3ha, 5ha, and 10ha, respectively. 3. The three types of farm machinery storage housing i.e. side-open type, front-open type, and side & front open type could be designed in considering the utilization purpose, future farming plan, management status, water service, distance from the field, convenience of entrance, and storage and repair space.

바닥재 처리로 인한 수송 트레일러의 수직진동 감쇠 효과

이홍주,홍종호,김성엽 안성산업대학교 2002 論文集 Vol.34 No.-

This study was aimed to prevent the quality loss of agricultural products, which could be occurred by the vibrations of transporting trailer. The vibration absorption effect was measured and analyzed by mounting the polystyrene material on the bottom of trailer. The transporting trailer was tested with being mounted by the pear boxes up to fourth floor. The results of this study could be summarized as follows: 1. At low engine speed of 500rpm, the average vertical vibration level of the first floor boxes (lowest boxes) was reduced to almost half of the non-mounting system. And, at the fourth floor boxes (highest boxes), the vibration absorption effect was higher as about 10 times compared with the non-mounting system. 2. At standard engine speed of 1,000rpm, the average vertical vibration level of the first floor boxes was almost same as 0.005㎨ and 0.006㎨ respectively, but at the fourth floor boxes, the average vertical vibration was reduced to almost 60% of the non-mounting system.

動力 耕耘機의 農作業 事故에 關한 硏究

李弘柱 안성산업대학교 1981 論文集 Vol.13 No.-

動力耕耘機의 農作業에서 發生되는 事故를 調査分析한 結果는 다음과 같다. 가. 事故頻度 (1) 動力耕耘機의 台當 年間 事故頻度는 0.98回이고 361時間 作業에 1回의 事故가 發生하였고 機械調節等의 準備作業에서 가장 많은 事故가 發生하였다. (2) 機種別로는 디젤엔진에서 年100回 (329時間作業), 石油엔진에서 年0.97회 (389時間作業)씩 事故가 發年하였다. (3) 出力別로는 石油엔진은 8PS이 10PS보다, 디젤엔진은 10PS가 8PS보다 事故頻度가 높았다. 나. 事故原因 (1) 動力耕耘機의 事故는 不注意에 依한 事故가 全體의 47.4% 不可避한 事故가 26.3%였다. (2) 事故가 가장 많은 作業은 機械調節等의 準備作業이고 不可避한 事故는 運搬作業에서 發生하였다. A survey was carried out to investigate the accidents that occurs during the operation of power tiller. The results are as follow: (A) Frequency of accidents 1. The frequency of accidents of a power tiller was 0.98 times/year, that means an accident occurs once every 361 hours of operation. Higher frequency of accident was found during the preparation for farming operation such as check and adjustment of power tiller. 2. The frequency of accidents of Diesel engine power tiller was 1.00 time/year, or one every 329 hours of operation, and that of Kerosene engine power tiller was 0.97 times/year, or once every 389 hours of operation. 3. A tendency of higher frequency of accident was found in 8ps than 10ps Kerosene engine power tiller, and in 10ps than 8ps diesel engine power tiller. (B) Cause of accident 1. The accidents of power tillers were mainly due to the lack of attention which shared 47.4%, and the inevitable accidents were the next shared 28.3% in total. 2. High persentage of safety accidents occured in the preparation for farming operation, chock and adjustment of power tiller, and inevitable accidents commonly occured in the transportation job.

충청북도 지역의 농업기계 정비요원의 직업의식

이홍주,홍종호,김성엽 안성산업대학교 2000 論文集 Vol.32 No.-

This study was conducted to obtain basic informations to be used for agricultural machinery servicemen training program by surveying and analyzing the job consciousness of agricultural machinery servicemen in Chungchong Bukdo region. The results of the study are as follow : 1. General status of the agricultural machinery servicemen, the average age was 35, of them 54.6% were high school graduates. Most of them, 71.8%, earn an annual income less than 15 million won and none of them more than 25 million won. 2. 30.9% of them were engaged in the job for 16-20 years and 53.6% began in a small country service center as a serviceman. 3. 91.8% of the servicemen answered that there were so many difficulties in repair and maintenance of agricultural machines due to various kinds of models and difficulties in purchasing machine parts. 4. 79% of the servicemen have been experienced in job training program for repair/maintenance of agricultural machinery. They wanted to be trained in electricity, electronics and hydraulic systmes of the big and automated agricultural machinery. 5. Due to the low annual income and heavy duty, 44.5% of the servicemen were dissatisfied and more than 30% wanted to transfer to another job. 6. About 70% of them, old aged and long experienced servicemen are unable to get a new job, want to be engaged continuously in agricultural machinery service.