• 대한안전경영과학회지
• /
• 제16권2호
• /
• pp.131-138
• /
• 2014

Auto part industry supplies production for auto manufacturer and after market. These company have inventory for delivery. High inventory level can be good for delivery, but cost will be increase. Low inventory level can be customer unsatisfaction for delivery late. Low inventory level also is reason of low productivity by decreasing product batch size. These article suggest model for calculation a proper inventory level and prove a effect by simulation of some company.

• 대한산업공학회지
• /
• 제33권3호
• /
• pp.329-338
• /
• 2007

This paper presents a dispatching algorithm for nonidentical parallel machines problem considering rework, sequence dependent setup times and release times. For each pair of a machine and a job type, rework probability of each job on a machine can be known through historical data acquisition. The heuristic scheduling scheme named by EDDR (Earliest Due Date with Rework probability) algorithm is proposed in this paper making use of the rework probability. The proposed dispatching algorithm is measured by two objective function value: 1) total tardiness and 2) the number of reworked jobs, respectively. The extensive computational results show that the proposed algorithm gives very efficient schedules superior to the existing dispatching algorithms.

• 대한안전경영과학회지
• /
• 제3권4호
• /
• pp.181-191
• /
• 2001

Integrated Supply Chain Management is a important subject for all enterprise activities as include logistics/sales, transfer and storage, manufacturing, purchasing of materials. A recent customer wants to receive high level service of all parts as Qualify, Delivery, Cost and Product. Therefore, Enterprise effort to supply for customers needs use some techniques like Data Mining, POS, MIS. Inventory and Logistics cost is the highest expense of all cost from first supplier to final customer on supply routine. So, SCM's basic purpose is reduce to that cost. So that this paper explain necessary, background, concept of SCM, analyze several using methodology and function of main SCM solution, after propose to ATP model include arithmetic procedure, functions, input data for determines available due date.

• Journal of Korean Neurosurgical Society
• /
• 제66권3호
• /
• pp.258-262
• /
• 2023

Germinal matrix-intraventricular hemorrhage (GM-IVH) is among the devastating neurological complications with mortality and neurodevelopmental disability rates ranging from 14.7% to 44.7% in preterm infants. The medical techniques have improved throughout the years, as the morbidity-free survival rate of very-low-birth-weight infants has increased; however, the neonatal and long-term morbidity rates have not significantly improved. To this date, there is no strong evidence on pharmacological management on GM-IVH, due to the limitation of well-designed randomized controlled studies. However, recombinant human erythropoietin administration in preterm infants seems to be the only effective pharmacological management in limited situations. Hence, further high-quality collaborative research studies are warranted in the future to ensure better outcomes among preterm infants with GM-IVH.

• 한국통신학회논문지
• /
• 제35권1A호
• /
• pp.44-53
• /
• 2010

본 논문은 무선망 환경에서 패킷의 지연 제어를 위한 트래픽 관리 방안을 제시한다. 전송 노드의 버퍼에서 서비스 순서를 결정짓는 방안으로 EDD(Earliest Due Date) 스케쥴링 정책을 적용하여 각 패킷의 긴급성에 근거한 서비스 제어가 이루어지도록 하였다. 또한 채널 공유 제어를 위한 MAC 파라미터인 contention window 값은 MAC의 non-work conserving 특성을 최소화하여 지연을 감소시킬 수 있도록 시스템 상태에 따라 적응적으로 설정하는 방안을 제시하였다. 이 방안은 트래픽 클래스와는 무관하게 각 패킷별 지연 제어가 이루어지므로 클래스 단위의 파라미터 설정이 필요 없게 된다. 이러한 구현의 간편성 이외에 기능 및 성능의 타당성을 확인하기 위하여 시뮬레이션을 수행하였으며, IEEE 802.11e와 같은 클래스 단위의 큐 운용 방식에 비해 지연 감소 및 지연 요구 충족률이 높은 것을 확인하였다.

• 한국산업경영시스템학회:학술대회논문집
• /
• 한국산업경영시스템학회 2002년도 춘계학술대회
• /
• pp.485-490
• /
• 2002

Demands of customers are being changed and varied. And in this circumstance, it become a main issue of management that the company should produce and sell products according to the customer demands. With these trends, each company has been concentrating effects on generalization of product development technique and distinction of service for customer. To fulfill these demands of customer, they need a concept of eCRM(Web based Customer Relationship Management), and go from soiling products and services, or gathering customer requests, up to the phase of solving customer's problem by real time or previous action. With the help of internet, the frequency and speed of the problem solving has improved greatly. In the Supply chain, The ATP(Available to Promise) function doesn't only give customers to conformation of delivery. It can be used by the core function with ATP rule that can reconcile supplies and demands on the supply chain. Therefore We can be acquire the conformation about on the due date of supplier by using the ATP function of management about real and concurrent access on the supply chain, also decide the affect about product availability due to forecasting or customer's orders through the ATP. In this paper, It consolidates the necessity on a ATP and analyzes data which is concerned of ATP. Under the these environments, defines the ATP rule that can improve the customer value and data flow related the eCRM and builds on a algorithm.

• 산업경영시스템학회지
• /
• 제43권4호
• /
• pp.23-32
• /
• 2020

Many small and medium-sized manufacturing companies process various product types to respond different customer orders in a single production line. To improve their productivity, they often apply batch processing while considering various product types, constraints on batch sizes and setups, and due date of each order. This study introduces a batch scheduling heuristic for a production line with multiple product types and different due dates of each order. As the process times vary due to the different batch sizes and product types, a recursive equation is developed based on a flow line model to obtain the upper bound on the completion times with less computational complexity than full computation. The batch scheduling algorithm combines and schedules the orders with same product types into a batch to improve productivity, but within the constraints to match the due dates of the orders. The algorithm incorporates simple and intuitive principles for the purpose of being applied to small and medium companies. To test the algorithm, two case studies are introduced; a high pressure coolant (HPC) manufacturing line and a press process at a plate-type heat exchanger manufacturer. From the case studies, the developed algorithm provides significant improvements in setup frequency and thus convenience of workers and productivity, without violating due dates of each order.

• 한국컴퓨터정보학회논문지
• /
• 제27권12호
• /
• pp.9-16
• /
• 2022

본 논문에서는 함정 전투체계의 데이터 파일의 데이터 불일치가 발생했을 때 데이터 복구를 할 수 있도록 레코드 블록 데이터 파일 시스템(RDBS)의 설계 및 활용방안을 제안한다. 함정 전투체계는 다중화를 지원하기 위해 다수의 정보처리장치 저장소에 동일한 파일을 관리하고 있다. 하지만 일부 장비의 유지보수로 인한 사용불가 상태에서 운용하거나 사용자의 운용미숙으로 정보처리장치 간의 데이터 파일의 불일치가 발생할 수 있다. 기존 함정 전투체계는 데이터파일의 변경이력을 관리하지 않으므로 데이터 불일치가 발생했을 때, 가장 최신날짜 기준으로 데이터 파일을 동기화를 진행하였다. 그러나 가장 최신 날짜의 데이터파일이 신뢰도가 가장 높다고 보기 어려우며, 한번 파일동기화가 진행된 이후에는 동기화 이전 데이터로 복구할 수 없다. 이러한 문제점을 해결하기 위해 본 논문에서 제안한 RDBS를 활용하여 레코드 블록 단위로 데이터를 저장 및 동기화 하였으며, 레코드 블록 관리로 인한 파일동기화에 발생하는 오버헤드를 줄이기 위해 Rsync알고리즘을 활용하였다. RDBS를 적용한 SW를 모의환경에서 성능시험을 하였으며, 정상 동작확인을 통해 함정 전투체계에 적용이 가능함을 확인하였다.

• 산업경영시스템학회지
• /
• 제25권4호
• /
• pp.54-60
• /
• 2002

In the Supply chain, The ATP(Available to Promise) function doesn't only give customers to conformation of delivery. It can be used by the core function with ATP rule that can reconcile supplies and demands on the supply chain. Therefore We can be acquire the conformation about on the due date of supplier by using the ATP function of management about real and concurrent access on the supply chain, also decide the affect about product availability due to forecasting or customer's orders through the ATP. In this paper, It consolidates the necessity on a ATP and analyzes data which is concerned of ATP. tinder the these environments, defines the ATP nile that can improve the customer value and data flow related the eCRM and builds on a algorithm.

• 경영과정보연구
• /
• 제15권
• /
• pp.165-186
• /
• 2004

When certificates of qualification relating to computer have shown up like dam water and meeting the age of office automation (OA) utilizing computer throughout the community, and at the point of time when the promotion of efficiency of duty is attempted by utilizing internet, the improvement plans should be groped for to expect to cultivate the national industrial manpower efficiently and by easily approaching the related OA certificates of qualification related to computer so that everyone can acauire the additional points for recognition of credit, entering company and promotion by the dimension of public trust, recognition degree, practial using level in actual affairs, reliability of problems and after manpower management of the certificates of qualification less expensively and saving time. the concrete plans are as follows: First, in the standard of making questions for the examination of 'Computer Utilizing Ability' executed by the chamber of commerce and Industry, there is the independent examination, but by inserting the presentation portion in the higher grade and middle grade, it should be contributed to improve office efficiency both in mane and reality. Second, though the internet retriever's examination is executed by the nongovernment specialized examination, since it is actually widely utilized in the office activities due to universality of using internet, it is now the time to newly establish and accommodate it as the national examination of 'internet Utilizing Ability', not the interest specialized retriever. Third, the applicants, shall take examination for the nongoverment certificate of qualification or enterprise's certificate of qualification at the date and place designated by the applicant, but there are much restrictions for the national certificate of qualification, so the date of examination shall be decided flexibly and efficiently to give chances to students by adjusting to the semesters of the students. Fourth, in this rapidly changing age of the informationalization community, the acquisition of the certificates of qualification through the university and the designated and entrusted educational institutes should be increased the proportion of activation to become officially recognized, and the extent of special treatment for obtainers of the certificate of qualification should be expanded to equip manpower competitive power in the age of informationalization.