• 대한지역사회영양학회지
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• 제5권1호
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• pp.92-99
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• 2000

A large amount of food waste in known to bring about many problems including environmental pollution. This study was carried out to investigate effective methods for reducing leftovers in the food service business & industry. The reasons for producing leftovers in food service restaurants, customers perferences of foods, cooking methods the degree of saltiness, and serving size were surveyed using questionnaire and the menu was improved based on the customers perferences. Excessively large serving sizes and the unfavorable cooking methods is food service were the main reason for the leftovers of side dish and one=dish foods. Because the largest amount of leftover came from soups & stews, an effective way of reducing leftovers in food service would be to reduce the serving size of soups & stews. Total leftovers was reduced to about 60% after improving menu (p<0.01) and the each leftover or rice, soup&stew, and side dishes was also reduced significantly after improving the menu(p<0.001) The environmental campaign to reduced food waste by bulletin intra-net using personal computers slogans& posters, and new letters was conducted for one week each and then leftovers were measured 9 times for following three weeks regularly. The total amount of leftovers decreased slightly due to the environmental campaign, but the difference was not significant . When we adopted penalty or prize system leftovers were decreased by about 35%(p<0.001) and the penalty system was more effective than the prize system in reducing leftover (p<0.001) When we compared the leftovers under the three services, a tray service was more effective in reducing leftover than complete self-service of partial self-service(p<0.001).

• 한국시뮬레이션학회논문지
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• 제17권2호
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• pp.75-82
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• 2008

기존의 대기행렬시스템 추론에 관한 연구들은 서비스시작시점과 서비스종료시점을 이용하여 수행되었다. 그러나 서비스시작시점은 시스템 내부 관측치로서 실제로 관측하기 어려울 때가 많다. 본 논문에서는 서비스시작시점 대신 외부 관측치인 도착시점을 이용하여 대기행렬시스템을 추론한다. 도착 및 이탈시점에 근거한 대기행렬 모형의 분석은 서비스시작시점의 결정이 관건이다. 본 연구의 선행연구로서 선입선출 및 후입선출 시스템에 대한 서비스시작시점의 결정방법은 이미 개발되었다. 본 논문에서는 임의순서규칙 대기행렬시스템으로 추론 범위를 확장한다. 구하고자 하는 성능척도는 평균대기시간과 평균서비스시간이며 이들의 분산을 구함으로써 통계적 분석기법의 사용이 가능하도록 하였다. 마지막으로 시뮬레이션 결과로부터 얻은 데이터를 이용하여 본 연구의 추론방법을 적용함으로써 그 타당성을 검증하였다.

• 간호행정학회지
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• 제20권4호
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• pp.362-372
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• 2014

Purpose: The purpose of this research was to develop and test the validity and reliability of the Service Orientation Scale for Health Care Organization. Methods: The Service Orientation Scale for Health Care Organization, $SERV^*OR$, was developed through forward-backward translation methods. Internal consistency and reliability, construct and criterion validity were calculated using SPSS Statistics WIN 17.0. Survey data were collected from 283 clinical nurses in a general hospital in J province. Results: The Service Orientation Scale for Health Care Organization showed reliable internal consistency with Cronbach's ${\alpha}$'s for the total scale ranging from .85~.91. Factor loading of the 30 items on four sub-scales ranged from .67~.83. The sub scales were named service leadership, service system, customer focus, and service control. Item convergent and discriminant validity were also established for the Service Orientation Scale for Health Care Organization. Criterion validity showed a significant correlation with customer orientation. Conclusion: The findings of the study demonstrate that the Service Orientation Scale for Health Care Organization has satisfactory construct and criterion validity, and reliability and can be used to measure service orientation.

• 한국인터넷방송통신학회논문지
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• 제13권6호
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• pp.281-288
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• 2013

본 연구는 국내 LBS 기술발전 현황을 기반으로 향후 어떤 LBS 서비스와 광고마케팅 활용이 필요하고 가능성이 높은지를 LBS 관련 전문가 대상 델파이 조사를 통해 파악하고자 하였다. 델파이 조사 대상으로 선정된 LBS 관련 전문가 50명을 대상으로 1차 개방형 설문지를 제시하여 LBS 서비스와 광고마케팅 활용 방안 중 필요하고 가능성이 있는 것을 자유롭게 서술하게 하였다. 1차 설문 응답을 분석한 결과 6가지 카테고리로 LBS 서비스가 분류될 수 있었고 각 카테고리별로 전문가 관점에서 향후 필요하고 활용 가능성이 있는 서비스 항목이 도출 되었다. 2차와 3차 델파이 조사를 통해 스마트모바일의 확산으로 점차 서비스 인프라가 확대되고 있는 상황에서 LBS산업의 활성화를 위해 어떤 LBS 서비스와 LBS 광고마케팅이 개발되고 제공되어야 하는지를 알게 되었다.

• 산업경영시스템학회지
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• 제30권4호
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• pp.170-181
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• 2007

The purpose of computing economic depreciation value is to find valuation of assets closely in line with market prices. The valuation of industrial assets are called Engineering Valuation. The two representative techniques for such valuation are Hulten-Wykoff Method, which estimates real value using regression equations, and T-factor Method devised at Iowa State University. The two are all empirical methods for computing service life (duration period). In this paper, we derived the service life by empirical methods using national wealth statistics, and also by more conventional methods such as original group method and retirement method. The results from each method are compared with one another. We also computed economic service life from these results. In S. Korea where amount of asset value statistics is still insufficient, the most effective method for empirically computing economic service life turns out to be the one using national wealth statistics. In addition, we also present economic relationship between depreciation value computed by using Hulten-Wykoff Method and depreciation value computed by using T-factor Method.

• 한국컴퓨터정보학회논문지
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• 제23권11호
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• pp.59-66
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• 2018

Data Distribution Service(DDS) provides the communications service programmers need to distribute time-critical data between embedded and/or enterprise devices or nodes. In this paper, I propose efficient methods for transmitting and receiving messages of various characteristics in real-time using DDS middleware. For high-frequency characteristic data, I describe several DDS packet types and various default and extended DDS QoS policies. In particular, the batching method is probably the best solution when considering several performance aspects. For large-capacity characteristic data. I will show a method using extended DDS QoS policies, a segmentation and reassembly method, and transmitting and receiving a large-capacity data with low priority method considering network conditions. Finally, I simulate and compare the result of performance for each methods. This results will help determine efficient methods for transmitting and receiving messages of various characteristics using DDS middleware.

• 한국신뢰성학회지:신뢰성응용연구
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• 제17권2호
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• pp.103-111
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• 2017

Purpose: Accelerated degradation tests can speed time to market and reduce the test time and costs associated with long term reliability tests to verify the required service life of a product or material. This paper proposes a service life prediction method for components or materials using an accelerated degradation tests based on the relationships between temperature and the rate of failure-causing chemical reaction. Methods: The relationship between performance degradation and the rate of a failure-causing chemical reaction is assumed and least square estimation is used to estimate model parameters from the degradation model. Results: Methods of obtaining acceleration factors and predicting service life using the degradation model are presented and a numerical example is provided. Conclusion: Service life prediction of a component or material is possible at an early stage of the degradation test by using the proposed method.

• 품질경영학회지
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• 제41권4호
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• pp.527-539
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• 2013

Purpose: Methods for increasing health-care service quality are considered for a women-centered hospital located on a local city. A walk-through audit is applied to uncover areas for improvement. Methods: A survey questionnaire with 25 questions is constructed based on a service blueprint for a walk-through audit, and a survey is conducted both to patients and service providers to assess a health-care service quality. Frequency analysis, statistical tests and customer-provider analysis are used to analyze surveyed data. Results: According to customer-provider analysis, 6 attributes belong to 'problem unawareness' zone in which they are rated high by service providers but low by patients, and another 6 attributes belong to 'problem awareness' zone in which they are rated low by both groups. These attributes are considered to be improved with priority. Conclusion: Both patient group and service provider group have lots of different perceptions on most attributes that are examined, and the hospital to be studied is, in general, competitive in technical quality and less competitive in functional quality.

• 품질경영학회지
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• 제44권4호
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• pp.897-906
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• 2016

Purpose: The purpose of this study was to propose the useful method to improve service affective quality by analyzing customer's service experiences and evaluating the satisfaction of the affective sensual responses to physical stimulus. Methods: While customers were experiencing the service, the customers evaluated the subjective satisfaction for the visual, auditory, tactile, olfactory and gustatory senses on a scale of -3 to 3 at each stage of the service process. The customers described the positive and negative feelings about each sensory stimulus, and explained the reason for the subjective evaluation scores. After experiencing the whole service, customers evaluated the affective quality of the whole service. Results: The proposed method was applied to coffee shops. 35 male and female college students were evaluated for 15 coffee shops in Korea. Multiple regression analysis revealed that auditory and olfactory senses had a greater impact on service affective satisfaction than other senses. Conclusion: This method is useful to identify the factors that affect customer's affective quality and to find the target to improve physical environment more easily than existing methods.

• The Plant Pathology Journal
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• 제17권6호
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• pp.384.2-384
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• 2001