• Proceedings of the Korean Society of Precision Engineering Conference
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• 1996.11a
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• pp.913-920
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• 1996

In this study, the counting method for multi-axial and multi-point load states was proposed. Using this counting method, the load spectrum is generated from the service load history which is measured for boom structure of excavator. Loading state for loading points of boom structure is described as a multi-dimensional state space. From this load spectrum, the stress spectrum was generated by FEM analysis using the superposition of the unit load. The cumulated damage at the severe damage point of In nm structure by the failure example is calculated by Palmgren-Miner's rule. As a result of this study, the fatigue life estimation using the multi-axial and multi-point load counting method is useful.

• Journal of Communications and Networks
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• v.6 no.3
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• pp.269-279
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• 2004

A new online multi-layer integrated routing (MLIR) scheme that combines IP (electrical) layer routing with WDM (optical) layer routing is investigated. It is a highly efficient and cost-effective routing scheme viable for the next generation integrated optical Internet. A new simplified weighted graph model for the integrated optical Internet consisted of optical routers with multi-granularity optical-electrical hybrid switching capability is firstly proposed. Then, based on the proposed graph model, we develop an online integrated routing scheme called differentiated weighted fair algorithm (DWFA) employing adaptive admission control (routing) strategies with the motivation of service/bandwidth differentiation, which can jointly solve multi-layer routing problem by simply applying the minimal weighted path computation algorithm. The major objective of DWFA is fourfold: 1) Quality of service (QoS) routing for traffic requests with various priorities; 2) blocking fairness for traffic requests with various bandwidth granularities; 3) adaptive routing according to the policy parameters from service provider; 4) lower computational complexity. Simulation results show that DWFA performs better than traditional overlay routing schemes such as optical-first-routing (OFR) and electrical-first-routing (EFR), in terms of traffic blocking ratio, traffic blocking fairness, average traffic logical hop counts, and global network resource utilization. It has been proved that the DWFA is a simple, comprehensive, and practical scheme of integrated routing in optical Internet for service providers.

• Korean Journal of Veterinary Service
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• v.47 no.2
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• pp.107-113
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• 2024

A broiler farm in Jeonbuk province experienced high mortality due to decreased feed intake and poor growth, and pathological evaluation of 11- and 17-day-old broilers was performed, which led to the diagnosis of runting-stunting syndrome. From the start of the rearing period to shipment, 18.4% of the chickens in the three barns experiencing continuous culling and mortality were affected, compared to 7.7% in the other five barns. Gross findings on the 11-day-old broiler chicken revealed proventricular dilatation and hemorrhage, intestinal hemorrhage, urate deposition in the pericardium and renal tubule, nephropathy, and mild hepatic capsulitis. Similar proventricular dilatation and hemorrhage were observed in the 17-day-old broiler chickens. In addition, hepatitis and pericarditis were observed with the progression of secondary bacterial infection, and pathogenic Escherichia coli was isolated from these lesions. As a result of PCR, Newcastle disease virus, fowl adenovirus, chicken anemia virus and Marek's disease virus were not detected in the all tissue samples. In contrast, infectious bronchitis virus was detected in the proventriculus, kidney and cecal tonsil. chicken astrovirus was detected in the intestine, cecal tonsil and bursa of Fabricius, and chicken parvovirus was detected in proventriculus, intestine, cecal tonsil and bursa of Fabricius. By sharing the diagnostic process of a case of malabsorption syndrome through this case report, we hope that it can be widely utilized in the diagnostic process of livestock disease pathognomonic institutions.

• Journal of Applied Tourism Food and Beverage Management and Research
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• v.7
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• pp.315-329
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• 1997

This study reviews the scientific management theories and discusses those theories within the food service industry. By providing the principles and the practical implications of this theories on the food service industry, this study tries to identify their philosophies and usefulness to the industry so that the managers in the industry use them in their dynamic operations.

• Korean Journal of Oriental Medicine
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• v.10 no.1
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• pp.107-117
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• 2004

Each Local public heal public health service center is in difficult situation on programing and performing of local public health service. The purpose of research is to inquire of the present state of local public health service and search long-term developmental methods. The first, in order to accomplish this purpose, I distributed questionnaires to Korean medical doctors, who are worked in public health service center and researched that. The second, based on these findings, I proposed planning for upcoming project for activating local public health service on Korean medicine.

• Proceedings of the IEEK Conference
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• 2003.07c
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• pp.2565-2568
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• 2003

This paper presents a behavioral data monitoring system based on WAP(wireless application protocol) service for the 24-hour continuous health state monitoring of the elderly and the disabled. The developed system transmits a character message to the predefined mobile cell phone through SMS service when an emergency state takes place. Simultaneously, the image captured by a CCD camera is transmitted to the server computer installed WAP service program. Then, the user of the cell phone who received he message can access the server and open the transmitted image. This system can be used for the effective health monitoring of the elderly and disabled.

• Industrial Engineering and Management Systems
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• v.15 no.2
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• pp.131-142
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• 2016

We consider a multi-server queueing system without buffer and with two types of customers as a model of operation of a mobile network cell. Customers arrive at the system in the marked Markovian arrival flow. The service times of customers are exponentially distributed with parameters depending on the type of customer. A part of the available servers is reserved exclusively for service of first type customers. Customers who do not receive service upon arrival, can make repeated attempts. The system operation is influenced by random factors, leading to a change of the system parameters, including the total number of servers and the number of reserved servers. The behavior of the system is described by the multi-dimensional Markov chain. The generator of this Markov chain is constructed and the ergodicity condition is derived. Formulas for computation of the main performance measures of the system based on the stationary distribution of the Markov chain are derived. Numerical examples are presented.

• Journal of Korean Library and Information Science Society
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• v.36 no.2
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• pp.241-262
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• 2005

This study examines current state of digital reference service on the homepage of university library in Korea. Among 236 university libraries. only $36.9\%$ (87) provide digital reference services. Digital reference services was weak as face-to-face reference services in Korea. Based on the research finding, revealed current state and related problems, and a few suggestions are provided for digital reference service system.

• Journal of the Korean Society of Clothing and Textiles
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• v.23 no.8
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• pp.1170-1181
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• 1999

본 연구의 목적은 미국 의류점포의 판매규정과 고객의 점포에 대한 기대가 판매원과 소매점에 대한 만족과 평가에 미치는 영향을 조사하는 것이다 미국에 거주하는 한국 소비자들을 대상으로 먼저 시각적으로 분위기가 다른 두 점포에 따른 고객의 서비스에 대한 기대를 측정하기 위해 슬라이드를 보여주고 의류업체의 판매규정에 따른 의류에 관련된 문제상황을 설명해주는 시나리오(판매원 노력에 의한 문제 해결 또는 소비자 노력에 의한 문제해결)를 읽게 한 후 설문지를 작성하게 하였다 그 결과 업체의 판매규정이 판매원의 서비스에 대한 만족도와 평가 의류점포서비스에 대한 만족도와 평가에 영향을 미치는 것으로 나타났다.

• Journal of Families and Better Life
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• v.17 no.4
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• pp.99-118
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• 1999

The purpose of this study was to review the current state and issues of family life welfare policy and service delivery system in Korea Up to now social welfare has exclusively represented welfare area and family life welfare has been treated as a subarea of social welfare not an independent area Recently the organization system of family life welfare in Korea was reorganized. The depatment of family life welfare was disorganized and the role and function of it was dispersed. The present policy for family life welfare and service delivery system pose many issues in legal arrangement administrative dimension approach characteristics of welfare concerned department institution professional personnel and certificate system.