• 한국조리학회지
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• 제15권4호
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• pp.227-244
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• 2009

본 연구는 레스토랑 산업에 널리 적용할 수 있는 외식 서비스 품질 측정을 위한 다문항 척도를 개발하였다. 척도 개발을 위해 Kelly Repertory Grid 방법을 이용하여 중요하게 생각하는 레스토랑 품질 속성을 파악한 후 전문가 토론을 수차례 거쳐 유사 중복 항목을 통합하고, 핵심 차원별 주요 속성을 도출하였다. 척도 정제를 위해 신뢰도 분석과 탐색적 요인 분석을 실시하였으며, 이후 각 구성 개념에 대한 중복성 여부를 확인하기 위하여 3차 확인 요인 분석을 실시하였다. 본 연구에서는 Brady & Cronin(2001)이 제안한 위계적 서비스 품질 모형을 바탕으로 외식 서비스 품질 척도를 개발하였다. 본 연구의 위계적 외식 서비스 품질 모형은 외식 서비스 품질 차원 및 측정 요인을 물리적 환경 품질, 상호 작용 품질, 음식 품질이라는 핵심 차원으로 설명함으로써 요인간의 중복성 완화, 결과와 과정 품질의 균형적 고려, 세 가지 핵심 차원별 관리포인트 명확화, 위계적 모형에 의한 핵심 차원과 하위 차원의 구분 등 이론적 기여 측면에서 뿐만 아니라 관리적 시사점 도출 측면에서도 우위성을 갖는다고 할 수 있다.

• 품질경영학회지
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• 제40권2호
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• pp.156-165
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• 2012

The objective of this study is to identify the critical dimensions of comprehensive quality and to prioritize them for improvement of the quality competitive advantage. The critical dimensions, sub-dimensions and measurement items of comprehensive quality were abstracted from literature of quality, and constructed a model of hierarchical structure. 115 experts in four groups(supplier, buyer, consultant, and professor) were participated in pair-wise comparison of quality dimensions, but some of these responses were removed because the overall consistency of evaluator judgements exceed the acceptable ratio of 0.10. The priorities of quality dimensions for industrial and consumption goods were calculated respectively using the analytic hierarchy process(AHP) approach. As a result, product quality had the highest weight of 0.65, followed by support quality(0.18) and service quality(0.17) for industrial goods while product quality also had the highest weight of 0.62, but service quality(0.22) was preferred over support quality(0.16) for consumption goods.

• 한국사회복지학
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• 제61권3호
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• pp.103-127
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• 2009

사례관리의 수행요소가 지역거주 정신장애인의 삶의 질에 미치는 영향이 소비자 만족도에 의해 어떻게 매개되는지를 분석하였다. 분석대상은 지역사회정신보건서비스 기관 중 사례관리를 수행하는 18개 기관과, 이 기관의 서비스를 이용하는 381명의 정신장애인이다. 설문조사를 실시하였으며, 클라이언트 수준과 기관 수준의 자료를 동시에 고려하는 위계적 선형모형(HLM: Hierarchical Lineral Model)을 적용하여 검증하였다. 주요한 연구 결과는 실무자의 담당 사례량이 삶의 질에 직접적 영향을 주었다. 사례관리팀 접근은 소비자 만족도에 직접적 영향을 미친 반면, 소비자 만족도를 매개하여 삶의 질에 이르는 간접적 영향은 미미하였다. 적절한 사례량의 확보 및 사례관리자 확대, 팀접근의 유용성에 대한 실천적 함의를 제안하였다.

• 보건행정학회지
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• 제33권3호
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• pp.311-324
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• 2023

Background: Long-term care insurance for the elderly has been stably established along with the quantitative expansion of long-term care facilities. Indeed, the need for a paradigm about human rights-based service approach is being raised throughout society from a service perspective. Therefore, this study aimed to analyze the association between elderly human rights awareness and quality of service by considering human rights education as a moderate variable. Methods: This study conducted surveys with 138 caregivers working in long-term care facilities located in Seoul and Gangwon. General characteristics, awareness of human rights, and the level of service quality were examined using descriptive statistics, frequency analysis, and correlation analysis. And multi-variable linear regression with a hierarchical framework was employed. These analyses were performed using IBM SPSS ver. 25.0. Results: Of the 138 caregivers, 97.1% were female, 87.7% were more than 50 years old, and most of their education level was high-school graduates. Their length of employment ranged from more than 5 years to less than 10 years. The level of awareness regarding elderly human rights of the elderly was below normal (mean=2.21), but the quality of service was high (mean=4.21), and the need for human rights education was also high (mean=4.28). Among the general characteristics, the length of employment was significantly associated with awareness of elderly human rights. Moreover, political rights awareness, included as sub-domains of human rights, was positively associated with quality of service. However, the moderating variable, human rights education, was not significantly associated with the quality of service. Conclusion: In this study, human rights education, as a moderating variable, did not have a statistically significant effect on caregivers' human rights awareness in relation to service quality. This finding is inconsistent with previous research results. These results can be explained by the fact that the frequency of education in long-term care facilities was a significant factor in the practice of protecting the human rights of the elderly. Therefore ongoing encouragement for the frequency of current human rights education and improvements in the educational approach appear to be necessary. In addition, these findings reveal the need for strength of education policies and effective in-depth research about human rights and quality of service to respect the human rights of the elderly.

• 정보처리학회논문지C
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• 제14C권3호
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• pp.255-266
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• 2007

RSVP(Resource reSerVation Protocol)는 송신노드와 수신노드 사이에 네트워크 자원을 예약하여 QoS(Quality of Service) 요구사항을 지원하는 인터넷 표준 프로토콜이다. 무선 이동환경에 RSVP를 적용하기 위해 공유경로 식별 문제와 자원 선-예약 문제가 해결되어야 한다. 본 논문은 후보 라우터와 분기 라우터를 이용하여 공유경로 식별 문제와 자원 선-예약 문제를 해결하는 DBRA(Dynamic Branch Router Approach) 기법을 제안한다. DBRA는 송신노드와 분기 라우터 사이에는 일대일의 RSVP 자원예약 관계를 갖으며, 분기 라우터와 후보 라우터들 사이에는 일대다의 RSVP 자원예약 관계를 갖도록 하여 많은 네트워크 자원 소모를 줄인다. 제안하는 DBRA 기법의 효율성을 분석하기 위해서 시뮬레이션을 이용하여 평균 패킷 전송율과 대역폭 이용률, RSVP 자원 예약 실패율 관점에서 RSVP와 MRSVP(Mobile RSVP), HMRSVP (Hierarchical MRSVP)를 비교대상으로 비교 분석하였다.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2008년도 추계학술발표대회
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• pp.1387-1390
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• 2008

In a wireless network, handover latency is very important in supporting user mobility with the required quality of service (QoS). In view of this many schemes have been developed which aim to reduce the handover latency. The Hierarchical Mobile IPv6 (HMIPv6) approach is one such scheme which reduces the high handover latency that arises when mobile nodes perform frequent handover in Mobile IPv6 wireless networks. Although HMIPv6 reduces handoff latency, failures in the mobility anchor point (MAP) results in severe disruption or total disconnection that can seriously affect user satisfaction in ongoing sessions between the mobile and its correspondent nodes. HMIPv6 can avoid this situation by using more than one mobility anchor point for each link. In [3], an improved Robust Hierarchical Mobile IPv6 (RH-MIPv6) scheme is presented which enhances the HMIPv6 method by providing a fault-tolerant mobile service using two different MAPs (Primary and Secondary). It has been shown that the RH-MIPv6 scheme can achieve approximately 60% faster recovery times compared with the standard HMIPv6 approach. However, if mobile nodes perform frequent handover in RH-MIPv6, these changes incur a high communication overhead which is configured by two local binding update units (LBUs) as to two MAPs. To reduce this communication overhead, a new cost-reduced binding update scheme is proposed here, which reduces the communication overhead compared to previous schemes, by using an increased number of MAP switches. Using this new proposed method, it is shown that there is a 19.6% performance improvement in terms of the total handover latency.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제15권4호
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• pp.1317-1341
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• 2021

Nowadays, the Internet of Things (IoT) is adopted to enable effective and smooth communication among different networks. In some specific application, the Wireless Sensor Networks (WSN) are used in IoT to gather peculiar data without the interaction of human. The WSNs are self-organizing in nature, so it mostly prefer multi-hop data forwarding. Thus to achieve better communication, a cross-layer routing strategy is preferred. In the cross-layer routing strategy, the routing processed through three layers such as transport, data link, and physical layer. Even though effective communication achieved via a cross-layer routing strategy, energy is another constraint in WSN assisted IoT. Cluster-based communication is one of the most used strategies for effectively preserving energy in WSN routing. This paper proposes a Bio-inspired cross-layer routing (BiHCLR) protocol to achieve effective and energy preserving routing in WSN assisted IoT. Initially, the deployed sensor nodes are arranged in the form of a grid as per the grid-based routing strategy. Then to enable energy preservation in BiHCLR, the fuzzy logic approach is executed to select the Cluster Head (CH) for every cell of the grid. Then a hybrid bio-inspired algorithm is used to select the routing path. The hybrid algorithm combines moth search and Salp Swarm optimization techniques. The performance of the proposed BiHCLR is evaluated based on the Quality of Service (QoS) analysis in terms of Packet loss, error bit rate, transmission delay, lifetime of network, buffer occupancy and throughput. Then these performances are validated based on comparison with conventional routing strategies like Fuzzy-rule-based Energy Efficient Clustering and Immune-Inspired Routing (FEEC-IIR), Neuro-Fuzzy- Emperor Penguin Optimization (NF-EPO), Fuzzy Reinforcement Learning-based Data Gathering (FRLDG) and Hierarchical Energy Efficient Data gathering (HEED). Ultimately the performance of the proposed BiHCLR outperforms all other conventional techniques.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2007년도 춘계종합학술대회
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• pp.61-64
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• 2007

MPLS 네트워크에서 QoS(Duality of Service)에 관한 요구가 증대함에 따라 확장성을 보장하고 장애 복구를 위한 다중 경로 계산 방안들에 관한 여러 기술들이 제시되고 있다. 그러나 MPLS 네트워크는 트래픽에 관한 확장성 문제와 기존의 장애 복구 방식들의 경우 자원 낭비와 많은 지연 발생으로 인한 손실이 발생하는 문제점이 있다. 따라서 본 연구에서는 LSP 다중경로 라우팅 알고리즘을 적용한 망의 효율적인 관리 및 신속한 장애 복구를 위해 H-MPLS(Hierachical-Multiprotocol Label Switching) 네트워크 제안한다. 또한 확장된 규모의 망을 계층형 MPLS로 구성하여 기존의 장애복구 방식을 다양한 네트워크 모델로 적용하고, 이를 NS 시뮬레이터를 통해 성능 분석하여 그 효율성 및 확장성의 개선방안을 제시하고자 한다.

• 보건행정학회지
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• 제25권3호
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• pp.197-206
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• 2015

Background: The purpose of this study was to propose a method for developing a measure of hospital-wide all-cause risk-standardized readmissions using administrative claims data in Korea and to discuss further considerations in the refinement and implementation of the readmission measure. Methods: By adapting the methodology of the United States Center for Medicare & Medicaid Services for creating a 30-day readmission measure, we developed a 6-step approach for generating a comparable measure using Korean datasets. Using the 2010 Korean National Health Insurance (NHI) claims data as the development dataset, hierarchical regression models were fitted to calculate a hospital-wide all-cause risk-standardized readmission measure. Six regression models were fitted to calculate the readmission rates of six clinical condition groups, respectively and a single, weighted, overall readmission rate was calculated from the readmission rates of these subgroups. Lastly, the case mix differences among hospitals were risk-adjusted using patient-level comorbidity variables. The model was validated using the 2009 NHI claims data as the validation dataset. Results: The unadjusted, hospital-wide all-cause readmission rate was 13.37%, and the adjusted risk-standardized rate was 10.90%, varying by hospital type. The highest risk-standardized readmission rate was in hospitals (11.43%), followed by general hospitals (9.40%) and tertiary hospitals (7.04%). Conclusion: The newly developed, hospital-wide all-cause readmission measure can be used in quality and performance evaluations of hospitals in Korea. Needed are further methodological refinements of the readmission measures and also strategies to implement the measure as a hospital performance indicator.

• 보건행정학회지
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• 제8권2호
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• pp.149-165
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• 1998

The purpose of this study is to examine the effect of the health status on the quality of life of the rural elderly, and to examine the conditional effect of socialsupport for that influence. 'Quality of life' used in this study was defined by unidimensional approach. The data were collected by conducting individual interviews with 296 rural elderly people aged 60 and the above who were living in one township of Kangwondo, between the time period of October and November 1995. The main findings are as follows: 1. Hierarchical regression analyses were carried out to examine the relative contribution of three set of variables on the quality of life. The first step, which included sociodemographic factors showed that the coefficient of determination (R$^{2}$) was 8% and income was a statisically significant variable. The second step, by adding health related factors, revealed that the R$^{2}$ was increased to 34% by 26% point and the degree of health recognition was the statistically significant variable. The third step, by projecting additionall social support related variables revealed that the R$^{2}$ was 42% 2. The conditional effect of social support was analyzed to examine the influence the health status has on the quality of life. The results are as follows: 1) The IADL and the degree of social contact interacted, resulting in that the higher degree of social contact boosted the stronger effect of IADL. 2) The effect of subjective health recognition on the quality of life is depended upon degree of family ontact. 3) The effect of eyesight on the quality of life is depended upon degree of satisfaction in social relation. The lower the degree of social support was, the bigger the influence of health related variables affecting quality of life became. This study explains that health status is a major factor in predicting the quality of life of the aged. Particularly the subjective health recognition was an important factor as the perception of quality of life.