• Journal of Korean Institute of Industrial Engineers
• /
• v.40 no.4
• /
• pp.435-441
• /
• 2014

This paper considers a single-product problem for inbound lot-sizing and outbound dispatching at a third-party warehouse, where the demand is dynamic over the discrete time horizon. Each demand must be delivered into the corresponding delivery time window which is the time interval characterized by the earliest and latest delivery dates of the demand. Ordered products are shipped by heterogeneous container types. Each container type has type-dependent carrying capacity and the unit freight cost depends on each container type. Total freight cost is proportional to the number of each container type used. Also it is assumed that related cost functions are concave and backlogging is not allowed. The objective of the paper is to simultaneously determine the optimal inbound lot-sizing and outbound dispatching plans that minimize total costs which include ordering, shipping, and inventory holding costs. The optimal solution properties are characterized for the problem and then a dynamic programming algorithm is presented to find the optimal solution.

• Journal of Korea Multimedia Society
• /
• v.17 no.9
• /
• pp.1115-1124
• /
• 2014

The objective of this study is to present a new design method at the idea brainstorming process, which requires a great deal of time and effort to seek their own ideas in existing design process and to develop a user support idea forms generation system called OCIGS (Openware Creative Idea Generation System) that makes it possible to create a variety and 3D forms as well as a quantitative evaluation data for the actual types that compose the aesthetic factors and designs of qualitative standards. In order to achieve these objectives : First, overcoming the limitation of 3D form generation ability by establishing visual application system, Second, accepting users' opinions by generating 3D images dynamically, analysing and giving information on the preferred ones on the web on real time, Third, identifying tendency of preference so that they can generate preferred colors and images in future by updating image combination and dropping low-preferred ones. This system would play a role as an idea or form generation application in the actual 3d form design development process.

• Proceedings of the Korean Geotechical Society Conference
• /
• 2003.03a
• /
• pp.781-788
• /
• 2003

It is an essential process to predict behaviors of ground and structure to seek economical efficiency and stability on the given environment. Predictions are conducted through analysis process of ground and structure. For these analyses, exact and quick acquisition of measuring data is required. But we face many difficulties in data acquisition stages due to the conditions of construction site. Therefore development of a powerful and effective monitoring system that can manage the integration of database and the implementation of measuring process in real time is strongly desired. This article shows an actual example of application of internet based monitoring system compared with the conventional monitoring system.

• The Transactions of the Korea Information Processing Society
• /
• v.6 no.11
• /
• pp.3116-3123
• /
• 1999

Current disk systems are generally designed to reduce read traffic more effectively. Hence, write traffic of the I/O workload could potentially become a bottleneck of the disk system performance. In order to overcome this problem without much cost, this paper presents using outermost-zone track of multi-zoned recording disk as a secondary disk cache. The proposed disk cache improves the disk system performance by following exploitations: speed difference between block transfer and track transfer, difference in transfer rate between outermost-zone tracks and inner tracks, reduction in the seek time caused by decreasing the number of disk cache tracks, and idle period during burst accesses. In addition, it does not waste the disk space because it allocates the caching space by the cylinder unit. The simulation results show that the proposed system improves 2.54∼3.11 times better in terms of average response time for write operations than existing disk systems..

• Industrial Engineering and Management Systems
• /
• v.13 no.3
• /
• pp.297-303
• /
• 2014

Stock pre-positioning is one of the most important decisions for preparing the stage of emergency logistics planning. In this paper, a mixed integer model for stock pre-positioning is derived to support an emergency disaster relief response against the event of earthquake. A maximum response time limit, budget availability, multiple item types, and capacity restrictions are considered. In the model, the decision of the distribution centers to cover a disaster area and the amount of supplies to be stocked in each distribution center are simultaneously determined to maximize the total expected relief demand of the disaster areas covered by the existing distribution centers. The proposed model is applied to a real case with 33 disaster areas and 16 distribution centers in Indonesia. Several sensitivity analyses are conducted to estimate the fluctuation on the emergency stock pre-positioning planning by changing the maximum response time and budgets.

• 제어로봇시스템학회:학술대회논문집
• /
• 2004.08a
• /
• pp.917-921
• /
• 2004

Principle of mailing list was distributed messages to all subscribers in one time. But mailing list operation has constructed a network traffic problem. Because mailing list manager distributed mails without concentrate on subscriber network. If our network has many of subscribers, there will be redundant data in traffic channel. Submailing list has purpose to reduce problems. Analyses of mailing list characteristic in electronic mail were a feature of submailing list system, which manage by human hand (Network Administrator). That will cause trouble for network traffic if Network Administrator could not seek for mailing list characteristic from e-mails in due time. This article will present ideas and recognize methodology for automatic working in submailing list system. Recognize step begin with capture process, which use to trap e-mail information from transfer channel. Next process is preparing raw data into recognition format. Then the third one is recognize part and find out confidential factor. The last process is make decision and determine which electronic mail has properties of mailing list characteristic. Afterward deliver result to submailing list for carry on.

• Journal of Agricultural Extension & Community Development
• /
• v.9 no.1
• /
• pp.61-73
• /
• 2002

The objectives of this study were to explore the present condition and development direction of youth allied organizations such as Korea 4-H Club Federation, Clover Alumni Association and Korea 4-H Association. Researcher developed questionnaires were used to identify historical changes, present condition and development directions of the youth allied organizations. The data were collected from 105 purposively sampled representatives from the youth allied organizations, and SPSS/WIN program was employed to analyze the data. Major problems of the youth allied organization, according to the respondents, were financial difficulties and lack of full-time employee for the organizations. It was recommended that more full-time employees would be necessary for further development of youth allied organizations. Securing wider membership throughout the country and financial security were recommended for development of the youth allied organizations.

• Proceedings of the ESK Conference
• /
• 1995.04a
• /
• pp.55-61
• /
• 1995

We spend about 40% of lifte time on a bed and seek how such amount of time is spent comfort. Bed comfort has been pursuited. The pressure distributions on a bed by body pressure has been considered as one of the most important factors of bed comfort. This study is to quantify the subjective assessment by the body pressure distribution and develop the objective evaluation method of bed comfort. A new measurement system for body pressure on a bed was developed in this study. The thin film pressure sensor (FSR: Force Sensing Resistor) of an elastomer-type was used to prevent the distortion of contact pressure. The pressure distribution is measured by FSR and displayed on the monitor by color-coded contour patterns. Some of the bed test results were described. And the relations between body pressure distribution and bed comfort were evaluated.

• International Commerce and Information Review
• /
• v.8 no.4
• /
• pp.177-207
• /
• 2006

DMZ is came from the antagonism of ideology of the cold war and will of peace embodiment of Gangwon province, the only divided province in the world, at the time of opening physical distribution transportation time on ground between south and north Korea. Analyze the central plan of Gangwon province that includes Mt. Geumgang sightseeing, the Gyeongwon line and the Donghae line. As regaining the overland route with Eurasian continent that lost because of the division of Korea into north and south, We have lived as people in a island country actually for the last 60 years. we should extend the racial imagination that lean toward the ocean to the continent again. As we present the use of efficient overland distribution transportation that is endowed with the fitness of the Gangwon province's plan to make a new developing opportunity physically and mentally. we would seek the revitalization of Gangwon economy and inter Korean trade.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2011.11a
• /
• pp.199-200
• /
• 2011

Absorption of lightweight aggregate affects the properties of fresh and hardened concrete, so care must be taken. In this study, according to KS F 2533 absorption is measured to aggregate size, submerged time, holding time and practically ways to maintain a constant absorption was to seek. The findings for quality control of the lightweight aggregate concrete mixture is saturation of the surface-dry aggregate humidity 100% after 24 hours immersion in the environment has been stored for more than two days to absorb the state was able to define. Dry density at the surface of the lightweight aggregate and lightweight concrete mix design and placement is possible for it to apply.