• The Journal of Information Systems
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• v.18 no.3
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• pp.155-181
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• 2009

Modern persons should do many activities during limited time. In such situation, people feel time pressure because they think that time is short. Time pressure affects negatively several factors such as satisfaction and intention to use through perceived time cost. Ubiquity, an mobile service's characteristic in which users can use desired information or services in anywhere and anytime, would let users feel free from time pressure. This study examines the relationship between perceived time and intention to use and the moderating effect of ubiquity. We performed a survey for users of DMB service, a representative mobile service. Using Partial Least Square, we tested hypotheses. The results suggest that time pressure influences positively perceived time cost and that perceived time cost affects negatively satisfaction but not enjoyment. And the results show that there are the significant positive relationships between enjoyment and intention to use and between satisfaction and intention to use. Finally, the moderating effects of ubiquity on the relationships between perceived time cost and enjoyment and between perceived time cost and satisfaction was found to be positive and significant. We suggests implications basing on the results.

• Journal of Digital Convergence
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• v.20 no.4
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• pp.215-224
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• 2022

This study tried to examine the effect of cost asymmetry on food service companies and what characteristics affect such cost behavior. This study analyses cost behavior for cost of good sold, selling, general and administrative cost over the 2019-2020 period. Also, the rate of change in activity level was measured using change in sales. This study measures the behavior of cost using the research model of [1]. As a result of the analysis, it was found that food service companies exhibited cost asymmetric behavior as their sales level decreased. In addition, the cost asymmetric behavior has been strengthened since the corona virus, and the shorter the operating cycle. Lastly, the shorter the inventory holding period and the collection period of accounts receivable, which are components of the operating cycle, more strengthen asymmetric behavior of costs. These results seem to be meaningful in examining the cost structure and factors that may affect the structure for food service industry. This has approached the cost aspect of the situation faced by service food companies due to COVID-19, and it can be suggested that this pandemic can lead to cost reduction due to a decrease in corporate sales.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.15 no.4
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• pp.53-63
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• 2007

This paper examines the safety perception of passengers on low cost carriers which has made several accidents and incidents at the early stage of their business. The concept of low cost carrier is becoming more important to airline industry in Korea. This study achieves the first selecting attribute among airline service factors on domestic flights and try to indicate that how much the passengers trust in the safety of low cost carriers. It is also sets the comparative safety awareness between low cost carriers and two full service national carriers in domestic market. The safety perception of aircraft type can be a major factor for LCC choice in Korea due to frequent accidents and incidents for last two years. More than 60% of LCC passengers have increasingly considered the safety after recent accidents. The low cost airlines' images of the passengers showed that the first image of the LCC was the fare and the second image was safety. This study indicates that most of the LCC travelers will use the international low cost airlines when LCC extend their destination to adjacent countries. For the accomplishment of the low cost carriers' competitiveness in domestic market, they have to try to get rid of bad image for safety and pay extra attention to find out better services other than the safety and develop other strategies to compete against existing full service carriers.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.21 no.1
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• pp.196-205
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• 1996

Severice allocation to satellite transponders under consideration of interference caused by inter-satellite and intra-satellite systems is one of the most important issue in terms of optimal usage of satellite network resource. In this paper, we present a new and show several simulation results to verify the proposed method. Especially, our concerns are concentrated on the cost (interference) matrix which is believed to be optimal in obtaining the service allocation plan. The method and concepts presented in this paper may be well applicable to making a plan for service assignment of the satellite communication systems.

• Research in Community and Public Health Nursing
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• v.22 no.4
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• pp.438-450
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• 2011

Purpose: This study was to investigate the effect of home visiting care service and to evaluate the effect from the cost-benefit perspective. Methods: Target participants were enrolled in 2007~2008 for home visiting care and provided with a home visiting nursing service for more than 18 months in J Ward of S City. Of 391 participants, 244 who satisfied the inclusion criteria were used in the final analysis. Cost-benefit analysis was done using the net benefit and benefit/cost ratio. Results: After providing the home care nursing service, the blood pressure control rate increased from 50.8% to 75.4%. Of the subjects, 39.8% maintained their blood pressure level within the target range. As a whole, the net benefit of home visiting care per person ranged from 434,964.86 to 447,112.43 won and the benefit/cost ratio ranged from 2.82 to 2.84. Conclusion: Home visiting care for vulnerable populations with hypertension was effective in both maintaining blood pressure and reducing blood pressure to the target range. Therefore these results are especially useful for establishing the value of home visiting services for policy makers as well as for prioritizing vulnerable populations.

• Journal of Korean Academy of Nursing Administration
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• v.19 no.4
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• pp.449-461
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• 2013

Purpose: The purpose of this study was to explore the relationship between cost and revenue for inpatient nursing activities in general wards. Methods: Data were collected from 12 medical-surgical wards in one general hospital from January 1 to December 31, 2010. The nursing activities were categorized into 2 groups according to nursing service payment type in terms of the Korea health insurance system. Descriptive statistics were used to identify nursing activities and nursing activity costs. Results: Of 140 nursing activities identified as performed in general wards, payment for 69 items was included in nursing management fees. The percentage of each cost for the nursing units was 90% for labor, 4% for materials, and 6% for operating expenses. The cost for medical support nursing service accounted for 38% of costs and nursing management fees, 62%. The average profit and loss was -237,257,000 won. The cost recovery rate for nursing service was only 44%. Conclusion: The results indicate a need to measure the economic value of nursing activities performed in general wards and use it as a basis for establishing an adequate reimbursement system for nursing service.

• Journal of the military operations research society of Korea
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• v.28 no.2
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• pp.1-19
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• 2002

This study shows the effect of inventory policy change from supplier-based to customer-based. We focus on the service level, cost, and information distortion of the Military Supply Chain(MSC) with System Dynamics. We design MSC model according to field practician interviews by using Vensim. The simulation makes a comparison between supply-based inventory policy performances and order-based inventory policy performances. In order to evaluate the MSC performances, we measure the accumulation of backlog(service level), supply chain cost, and order percentage overshoot(information distortion). The results show that 1) changing inventory policy from supplier-based to end customer order-based gets a good customer service, reduces MSC cost, and prevents information distortion, 2) changing inventory policy from supplier-based to immediate customer order-based reduces a small amount of MSC cost and deteriorates customer service, and 3) supply level is main factor for MSC performances improvement. This study implicates the policy change makes a improvement of MSC performance without introducing information system.

• Health Policy and Management
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• v.3 no.1
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• pp.25-52
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• 1993

Variation in the utilization of medical services is a very important issue in cost containment and quality assurance of health care. Practice variation directly affects health care expenditure especially in fee-for-service system, which is the payment system of health insurance in Korea. In addition to cost issue it is generally accepted that variations in medical practice and the cost of inpatient care suggest the possibility of inappropriate quality of care. This study is to closely examine the patterne and degrees of variation in cost structure of inpatient care among types of hospital and individual hospitals in some tracer diseases, and also to inquire into the service items which contribute much to the variation of total medical care cost. Foru common diseases, i.e. Cesarean Section, appendectomy, cataract extraction and pediatric pneumonia, were selected as tracer diseases. In most tracer diseases there were statistically significant differences in total medical care cost among hospitals in same type of hospital as well as among types of hospital(p<0.01). When total medical care cost were subdivided into the types of service, cost of medication and diagnostic examination varied the most prominenly. When the cost of medication were subdivided again, cost of parenteral antibiotics showed the most prominent variation. Of total medical care cost, medication was most contributory to the variation of total medical care cost(58.1~82.3%), and cost of antibiotics was most contributory to the variation of medication cost(63.9~92.2%). The results of study implicated that reducing the variation of medication may plays a significant role in containing the cost of inpatient care. In order to sort out the factors affecting practice variations including drug prescription pattes further researches are required.

• Health Policy and Management
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• v.20 no.4
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• pp.45-57
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• 2010

Background : If different cost efficiency indexes were informed to the same clinic depending on the inclusion or exclusion of pharmacy cost, it may impair the reliability of provider-profiling system. This study aimed to investigate whether the omission of pharmacy cost affects cost-efficiency rankings in medical clinics. Methods : Data for ambulatory care cost at 23,112 medical clinics were collected from the claims database, which was constructed after review by the Health Insurance Review and Assessment Service (HIRA) of Korea in April 2007. We calculated two types of cost efficiency indexes by inclusion or exclusion of pharmacy cost for a medical clinic. The agreement between the decile rankings of the two indexes was also assessed using the weighted kappa statistic of Landis and Koch. Results : When the cost efficiency index for total cost including pharmacy cost was compared with the index for total cost excluding it, the agreement between the two indexes was only 55%. The agreements between the two indexes were relatively low within specialties which have larger pharmacy volume of total cost and lower correlation between total cost with or without pharmacy cost included than the average level of all the specialties. Conclusion : These results suggest that the omission of pharmacy cost may result in contradictory outcomes that may be confusing to a medical institution and may impair the reliability of provider-profiling systems. It is very important to standardize profiling criteria for the reliability of provider profiling system.

• Journal of Korean Academic Society of Home Health Care Nursing
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• v.10 no.2
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• pp.113-122
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• 2003

Purpose: This is a simple survey for discussion about cost analysis methodological issues in home care nursing service studies. Method: The subject of this study were articles published in Korea from 1961 to August, 2002, and searched by key word 'cost' and 'nursing' from various DB(National Assembly Library, The National Library of Korea, RICH etc). Finally, 13 articles were collected. Result: 1) The major type of cost analysis studies was a cost comparison or a simple cost study. 2) The important methodological weaknesses were as followers; (1) few studies were suggested cost analysis framework or analytic perspective, (2) it ,was not enough to describe for basis of selection of cost/effectiveness items, (3) few studies were done by sensitivity analysis. Conclusion: These above results will be used to develop a more proper cost analysis methodological framework in home care nursing services and also to contribute as a guideline for further studies.