• Journal of Communications and Networks
• /
• v.5 no.3
• /
• pp.215-221
• /
• 2003

It is expected that per-user customized services are widely used in next generation Personal Communication Network. To provide personalized services for each call, per-user service profiles are frequently referenced and signaling traffic is considerably large. Since the service calls are requested from the places where user stays, we can expect that the traffic is localized. In this paper, we propose a new service profile replication scheme, named Follow-Me Replication with local Anchor (FMRA). By replicating user's service profile in a user-specific location area, local anchor of each region, the signaling traffic for call and mobility can be distributed to local network. We compared the performance of the FMRA with two typical schemes: Intelligent Network-based !Central scheme and IMT-2000 based full replication scheme, as we refer it to Follow-Me Replication Unconditional (FMRU). Performance results indicate that FMRA lies between Central and FMRU schemes according to call to mobility ratio, and we identified the efficient ranges of CMR for FMRA depending on the various network parameters.

• Journal of Internet Computing and Services
• /
• v.2 no.3
• /
• pp.27-36
• /
• 2001

Recently much attention has been paid for interference mitigation technique for the COMA system, since more capacity is available with same bandwidth. In this paper, we introduces a novel adaptive interference suppression techniques for the CDMA system with narrow band interference. The proposed interference rejection scheme employs the adaptive linear prediction techniques in the subband. In each subband, we can more easily find and cancel the narrow band signal as compared to the full band. Thus, the proposed interference rejection can be classified as another time-frequency techniques for the narrow band interference rejection(10). Computer simulation is conducted for the 3-G COMA system with IF band sampling techniques, yielding better interference rejection and bit error rate performance as compared to conventional one. Also, optimum filter is analyzed and from the analysis, it can be shown the subband prediction techniques can suppress narrow band interference more efficiently.

• Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
• /
• 2003.04a
• /
• pp.357-364
• /
• 2003

National Geography Institute(NGI, National mapping agency) has been producing national basemap in automated process since middle of 1980's toward the systematic and efficient management of national land. In 1995, Korean government initiated a full-scale implementation of the National Geographic Information System(NGIS) Development Plan. Under the NGIS Development Plan, NGI began to produce digital maps in the scales of 1:1,000, 1:5,000, 1:25,000. However, digital maps of 1:250,000 or less scale, which are currently used for national land planning, were not included in NGIS Development Plan. Also, the existing laws and specifications related to digital maps of 1:250,000 or less scale are not clearly defined. Therefore this study proposed a feature classification system, which defines features that should be represented in digital map of 1:250,000 or less scale.

• Proceedings of the KAIS Fall Conference
• /
• 2008.11a
• /
• pp.197-200
• /
• 2008

현재 국내.외의 디스플레이 산업에서의 경쟁력은 사용자의 요구에 부응하는 제품을 얼마나 적시에 적절한 가격으로 출시하는가에 달려있다. 또한 국외, 특히 중국과 대만의 거센 추격을 받을 뿐만 아니라 시장조사기관에서는 지속적인 가격하락을 예상하고 있다. 이를 극복하고 국내업체가 세계시장에서 경쟁력을 확보하기 위해서는 수율의 극대화가 필수적이다. 따라서 본 연구개발에서는 정해진 환경에서 최대의 불량검출 능력을 발휘할 수 있도록 공정을 개선하기 위하여 Full Gate Visual 테스트에 필수적인 FGV 패턴발생 장치와 공정제어 장치를 개발하였다.

• Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
• /
• 2004.11a
• /
• pp.435-440
• /
• 2004

In this study, it is aimed to construct a remote home doctor system utilizing GIS technique. Remote home doctor system consists of three major compartments ; full-duplex communication system, visible communication system, and data backup system. On this system, a company request home doctor is connected with environment specialists and pollution control equipment company. The database in this system consists of spatial data and attribute data. Spatial data are made by topographic data and company location data. Attribute data consists in document data, status of company, products, amount of raw material used, odor discharge process, pollution discharge information and prevention equipments.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.18 no.2
• /
• pp.234-243
• /
• 1994

This research has studied situational effects on the perceived risk and store choice behavior. Data were obtained from 388 females with full-time jobs living in Pusan. The results analyzed by Spearman's rank correlation analysis, analysis of variance(ANOVA), 1-test and discriminant analysis. The results of this study were as follows; 1. There were significant differences in percieved risk according to the clothing purchasing situations. Performance risk was perceived high in gift-shopping situation and time-pressured situation, and financial risk was perceived high in self-shoving situation. 2. There were particularly significant differences in store attributes evaluation according to the clothing purchasing situations. In self-shopping situation, price, quality and reliability, store loyalty were evaluated as important store attributes. In gift-shopping situation, quality and reliability, product iuomation and in time-pressured situation, store loyalty and product information were evaluated as important store attributes. 3. Consumers preferred national brand franchise stores in self-shopping situation. They preferred department stores in gift-shopping situation and time-pressured situation. The types of selected store were mainly affetted by shopping convenience and location convenience.

• Korean Journal of Digital Imaging in Medicine
• /
• v.17 no.1
• /
• pp.1-7
• /
• 2015

Recently, dental PACS construction in dental hospital is fairly general. For this reason, inspection request works of dental PACS fee with Health Insurance Review & Assessment Service are more important for the financial stability in hospital and from now on status. But several departments in dental hospital, enforce a incoherent order system so inspection request situation is full of mistakes and omissions. As a result, financial stability in hospital rapidly change for the worse, as the case stands establishment of proper order system and match system is essential to resolve the issue. Consequently, we plan to establish the proposed idealized scheme.

• Proceedings of the Korean System Dynamics Society
• /
• 2000.02a
• /
• pp.29-37
• /
• 2000

In this paper an attempt is made to understand contribution factors in the field of electronic commerce(EC). To do that, we adopt and modify an existing commerce model. The following two major conclusions are drawn from our simulation. Most of all, the diminution of information delay introduce monotonous growth rather than fluctuation of EC market. The stable increase of revenue or market scale makes us decide the employment or capacity scale quickly. Second, for favorable and continuous evolution of EC, utilization system of electronic money should be established steadily. The following findings strongly support our claim: We found full oscillation of EC market when electronic money system didn't established well. On the contrary, if electronic money system could provide fast cash flow and fully trustful function, decisions of company or consumer would be executed promptly.

• Transactions of the Korean Society of Automotive Engineers
• /
• v.21 no.5
• /
• pp.136-144
• /
• 2013

An extensive real world in-depth crash accident data is needed to make a precise occupant injury risk prediction at crash accidents which might be a critical information from the scene of the accident in ACNS(Automatic Crash Notification System). However it is rather unfortunate that there is no such a domestic database unlike other leading countries. Therefore we propose a numerical method, i.e., crash simulation using a sled model to make a virtual database that can substitute car crash database in real world. The proposing crash injury risk prediction is validated against a limited domestic crash accident data.

• Journal of Animal Environmental Science
• /
• v.5 no.1
• /
• pp.45-52
• /
• 1999

The purpose of this study is to provide information for the livestock for the livestock carcass composting operation in agricultural waste management. Burial, landfilling and incineration of livestock carcass may have environmental regulatory and economic liabilities. Dead animals amended with agricultural residues can be composted and used to promote soil fertility and reduce environmental pollution. In this study we evaluated the effect of amendments on the primary and secondary composting reaction and stability of compost. The full-scale composting bin of swine carcass in roofed system with three amendments was adequate in reaching sufficient temperature above 55$^{\circ}C$ long enough to kill the pathogen. The average temperature of the compost material in dead swine amended with corn stover increased rapidly to 64$^{\circ}C$ on the 2nd day after primary composting and dropped to near ambient temperature on the 140th day of composting. The composting with of corn stover and wheat straw are more efficient for swine carcass composting than that of sawdust. Therefore, the amendment property is an important factor in the design of composting facility.