• Journal of Korean Academy of Nursing
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• v.37 no.4
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• pp.613-623
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• 2007

Purpose: The purpose of this study was to describe the operation, staffing, and services provided at adult day care centers in Korea. Methods: The study was a cross-sectional descriptive survey. The subjects were 209 centers among 280 centers registered in Korea (response rate 74.6%). The data was collected from August to December in 2006. Results: 48.8% of centers were located in a city area. The centers were based on the Social Model 65.5% of the centers were open Monday to Friday, an average of $7{\sim}8$ hours per day Dementia, stroke or frail elderly could use the center, and 57.4% of centers were used for dementia and stroke elderly together. The enrollment of elderly was 13.5. The number of total staff was 8.27, the number of RN's and social workers was 0.67, and 2.54 respectively. The social services(Meal preparation 98.6%, Special event 98.1%, Transportation, 97.1%) were provided more than the health services(Physical therapy 98.1%, ADL training 95.2%, Counseling 84 7%, Vaccination 82.8%, Health monitoring 78.9%, Health education 78.5%, Bathing 66.1%, and Speech therapy 28.2%). Conclusion: These results suggest we have to develop a health-focused adult day health care model based on the needs of elderly and their families. Nurses will have an important role in adult day health care.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.12 no.2
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• pp.579-603
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• 2018

In this paper we propose a QoS-enhanced intelligent stochastic optimal fair real-time packet scheduler, QUEST, for 4G LTE traffic in routers. The objective of this research is to maximize the system QoS subject to the constraint that the processor utilization is kept nearly at 100 percent. The QUEST has following unique advantages. First, it solves the challenging problem of starvation for low priority process - buffered streaming video and TCP based; second, it solves the major bottleneck of the scheduler Earliest Deadline First's failure at heavy loads. Finally, QUEST offers the benefit of arbitrarily pre-programming the process utilization ratio.Three classes of multimedia 4G LTE QCI traffic, conversational voice, live streaming video, buffered streaming video and TCP based applications have been considered. We analyse two most important QoS metrics, packet loss rate (PLR) and mean waiting time. All claims are supported by discrete event and Monte Carlo simulations. The simulation results show that the QUEST scheduler outperforms current state-of-the-art benchmark schedulers. The proposed scheduler offers 37 percent improvement in PLR and 23 percent improvement in mean waiting time over the best competing current scheduler Accuracy-aware EDF.

• Proceedings of the Korean DIstribution Association Conference
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• 2001.11b
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• pp.211-233
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• 2001

The aim of the present paper is to improve on branding problems of agricultural and livestock products in Korea by analyzing the statistical data which is present status of agricultural and livestock products published by ministry of agricultural and forest. To achieve the objective, raised 5 points at issue. Thus, the improvement schemes suggested from marketing point of view. And above issues are also discussed in the context of marketing mix. Then, the marketing strategy was developed which will apply branding management. The findings in this study is building a brand marketing system urgently fitted Korean style. For this project success, establishing event marketing and customer service department is necessary centering local National Agricultural Cooperative Federation(Nonghyup). Also needed education about brand knowledge to the people working for agricultural allied industries.

• Journal of the Korean Society of Physical Medicine
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• v.5 no.3
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• pp.341-350
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• 2010

Purpose : To provide information and data about the physical therapy service for planning future Olympic and other mass gatherings. Methods : To document the injuries sustained during the 2008 Beijing Olympic Games in a sample of patients visiting the physical therapy department of the Korean Olympic Committee. Athletes visited the physical therapy department in 2008 Beijing Olympic Korean delegation from 1 August through 22 August. Results : The sex ratio of athletes who visited physical therapy room was male 27.5%, female 72.5% and that number of case sports were higher Handball (26.2%), hockey (15.8%), archery (10.4%). The most prevalent injury of body parts was shoulder (15.1%), followed by the lumbar(14.2%), and the cervical spine (10.5%). Treatment modality had manual therapy(891), electrical therapy (584), ultrasound (461) and the number of taping were handball (47.8%), hocky (23.8%), judo (8.2%). Ankle (31.4%) was the most body parts of taping. Conclusion : Physical therapy in sport as a professional sports event to get their players to injury prevention and treatment. These results can be of help to optimize the strategies to prevent injuries and to treatment the injured athletes.

• Journal of the Korean Operations Research and Management Science Society
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• v.21 no.3
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• pp.47-61
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• 1996

An ATM switch must deal with various kinds of input sources having different traffic characteristics and it must guarantee very small value of cel loss probability, about 10$^{8}$ -10$^{12}$ , to deal with loss-sensitive traffics. In order to estimate such a rate event probability with simulation procedure, a variance reduction technique is essential for obtaining an appropriate level of precision with reduced cost. In this paper, we propose a hybrid simulation technique to achieve reduction of variance of cell loss probability estimator, where hybrid means the combination of analytical method and simulation procedure. A discrete time queueing model with multiple input sources and a finite shared buffer is considered, where the arrival process at an input source and a finite shared buffer is considered, where the arrival process at an input source is governed by an Interrupted Bernoulli Process and the service rate is constant. We deal with heterogeneous input sources as well as homogeneous case. The performance of the proposed hybrid simulation estimator is compared with those of the raw simulation estimator and the importance sampling estimator in terms of variance reduction ratios.

• Journal of Distribution Science
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• v.16 no.4
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• pp.21-34
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• 2018

Purpose - The objective of this research is to a) examine the effects of online reviews, posted on online distribution channels, on the change of consumers' attitudes and booking intention by distinguishing three types of online review valence: positive, negative and neutral review valence, and b) to investigate the combined effect of the inclination of online review and perceived usefulness of reviews on consumers' attitude change. Research design, data, and methodology - An experimental design was used by creating a mimicked hotel company's website and online reviews extracted from several online distribution channels such as online travel agencies (OTAs). A total of 414 respondents were randomly assigned to a type of review valence. Results - The results showed that the valence of positive reviews has a significant effect on the positive change of attitude and booking intention. However, the effect of the valence of negative reviews on the change of booking intention was not statistically significant compared to that of the valence of neutral reviews. Conclusions - The results offer some insights into the effect of online reviews on consumers' decision making processes and have important managerial implications for companies that operate online distribution channels in terms of their online marketing and the distribution of service products.

• Proceedings of the KSRS Conference
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• v.1
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• pp.491-494
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• 2006

The west coast of Northern Borneo is strongly influenced by Asian monsoon. Present research using the satellite ocean color (OC) remote sensing has identified some interesting oceanographic phenomena in this area that could be related to the harmful algal blooms (HAB). Occurrence of seasonal upwelling event was noticed off the northern tip of Borneo Island that could be related to the northeast monsoon wind. Harmful algal blooms by Pyrodinium bahamense var. compressum occurred since 1976. Subsequently, during December 2003, there was a report of new HAB by Cochlodinium polykrikoides in Northern Borneo. Analysis of OC images revealed that the Cochlodinium bloom had very high chlorophyll a signal and strong absorption characteristics. Results showed that the Baram River plume and upwelling at Northern Borneo were the source of nutrient for the Cochlodinium bloom in the offshore region. Ocean color images of 2004 showed that the bloom from Northern Borneo had crossed the Balabac Straits, reaching Palawan Island in Philippine. Due to the possibility of transboundary HAB problem, we propose a regional HAB monitoring network for an effective HAB management.

• The Journal of the Korea institute of electronic communication sciences
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• v.5 no.6
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• pp.672-677
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• 2010

Recently, the efficient management system for large-scale sensor data has been required due to the increasing deployment of large-scale sensor networks. In this paper, we propose a cloud-based sensor data management system with low cast, high scalability, and efficiency. Sensor data in sensor networks are transmitted to the cloud through a cloud-gateway. At this point, outlier detection and event processing is performed. Transmitted sensor data are stored in the Hadoop HBase, distributed column-oriented database, and processed in parallel by query processing module designed as the MapReduce model. The proposed system can be work with the application of a variety of platforms, because processed results are provided through REST-based web service.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.11
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• pp.2609-2614
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• 2013

Adoption of RFID has become widespread including logistics, drug supply-chain, and healthcare. To adopt RFID, we need to evaluate performance and feasibility of RFID S/W such as EPC Information Service (EPCIS), which demands a variety of test datasets of RFID business events. This paper proposes a novel method for creating RFID business events dataset by means of the simulation of RFID infrastructure. Proposed model provides a flexible representation capability since this is based on well-known petri-net. In addition, it can also be useful when determining adoption of RFID as it supports simulation of RFID environment.

• Fire Science and Engineering
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• v.33 no.3
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• pp.128-137
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• 2019

The aim of this study was to suggest ways to improve the operation of the Incident Command System for an effective disaster response in the event of a major disaster. As a result of the study, at the 5% significance level, which affects the perception of the operation, the significant variables that influence the operation of the Incidence Command System were found to be securing the operating budget, cooperation of the related agencies, disaster resource support, and expert training. The relative influence of the variables on the operation of the Incident Command System was found to be in the order of expert training, cooperation of related organizations, disaster resource support, and securing of the operating budget.