• 농촌계획
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• 제21권1호
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• pp.129-141
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• 2015

This study classifies the types of spatio-functional differentiation in Korean island areas and analyses typical characters and suggests the development directions by each type. Eup/Myeon-level island areas are classified as six types by the factor analysis and the cluster analysis. First type is the traditional rural center. This type puts emphasis on maintaining phase as the central space and has to maximize development potential of the whole of settlement zone. Second type is the specialized region in manufacturing industry and the qualitative mutual growth of regional industries is able to be suggested. Third type is the specialized region in the neighborhood service provision. This type needs to devise the plan for utilizing potential customers actively and developing into the region specialized in tourism industry. Fourth type is the specialized region in tourism-support service functions. This type has to promote differentiated policies for maintaining amenity infra or value of countryside capital and preservation and utilization of resources by regional features. Fifth type is the fishing industry-dominated region. This type has to promote sustainable fishery development through the policy reflecting regional features and condition. Finally, sixth type is the sluggish region dominated with the traditional agriculture and fishery. This type is needed to aim at developing into the new food production base having the advantage of clean environment by strengthening support in specialized agro-fishery products. The existing researches on spatio-functional differentiation were mostly discussed with respect to land development, but this study highlights the difference in deal with the island areas distinguished from the condition of industry.

• 한국동물위생학회지
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• 제36권2호
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• pp.79-86
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• 2013

Mycobacterium (M.) bovis, a member of the M. tuberculosis complex (MTC), is a re-emerging, zoonotic agent of bovine tuberculosis whose prevalence probably depends on variations in direct exposure to cattle and ingestion of raw milk. Accurate species differentiation of M. bovis and M. tuberculosis is needed to distinguish between human and zoonotic tuberculosis. This study successfully developed a loop-mediated isothermal amplification (LAMP) assay for rapid detection and differentiation of M. bovis and M. tuberculosis, however showed negative reactions in eight non-tuberculous mycobacteria (NTM) samples and ten other bacterial species. Sensitivity of this assay for detection of genomic M. bovis DNA was 10 $fg/{\mu}l$. And this assay successfully detected M. bovis in bovine clinical specimens. In conclusion, the LAMP assay is a simple and powerful tool for rapid detection of M. bovis in both pure bacterial culture and in clinical samples.

• 지능정보연구
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• 제15권3호
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• pp.81-102
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• 2009

본 연구에서는 치열한 경쟁에 처해있는 인터넷 쇼핑몰(Internet Shopping Mall:ISM) 산업에서 생존을 위하여 필수적인 차별화 구현을 통한 수익성 향상 방안을 탐색한다. ISM 관리의 실질적 차별화를 가능하게 하는 실행 수준에서의 관리 요소를 분석하는 본 연구는 이제까지 주로 개념적이고 기업 수준에서 수행된 B2C 차별화 전략 연구와 ISM 고객만족에 영향을 주는 선행요건을 파악하는 실증적 연구를 효과적으로 결합하여 다음과 같이 진행 되었다. 첫째, 고객의 구매 의사결정 프로세스의 각 단계 별 거래비용 이론 관점에서 고객가치를 정의하였다. 둘째, 포괄적 문헌연구를 통하여 ISM 고객만족에 영향을 주는 요소들을 파악하고 이들 중 관리요소의 차별화가 가능하며 차별화를 통하여 고객 가치에 영향을 줄 수 있는 15개의 관리요소를 도출하고 연구모델과 가설을 수립하였다. 마지막으로 실증분석을 통하여 구조적 모델을 검증하고 차별화에 대한 시사점을 제시하였다. 본 연구는 ISM 차별화에 대한 실증적 연구로는 초기단계에 속하는 연구로 본 연구의 결과는 ISM 차별화를 위한 향후 연구와 실무적 응용에 유용한 시사점을 제시한다.

• 한국약용작물학회지
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• 제23권2호
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• pp.117-124
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• 2015

Osteoporosis induces a bone mineral density loss due to imbalance of bone homeostasis that is achieved by osteoclasts (which are involved in bone resorption) and osteoblasts (which are involved in bone formation). Thus, this study was performed to evaluate the effects of hot water extract of the Achyranthes bidentata Blume (ABB) and Panax ginseng (Gin) on osteoclast and osteoblast differentiation. In this study, there was no cytotoxicity by ABB, 50 and $100{\mu}g/ml$ of Gin significantly decreased cell viability of RANKL-induced osteoclast in RAW264.7 cell (p < 0.01). But, it was $50{\mu}g/ml$ of ABB and Gin mixtures increased due to protective action of ABB. Furthermore, Gin contained groups (Gin, ABB and Gin mixtures) were inhibitory effects on osteoclast differentiation and bone resorption, and increased in osteoblast differentiation activity. Gin clearly inhibited RANKL-induced osteoclast differentiation by decreased calcitonin and TRAP (p < 0.01). Also, these extracts significantly increased calcium accumulation formation of osteoblastic differentiation reagents-induced osteoblast in MC3T3-E1 cell (p < 0.05). These results suggest that ABB and Gin mixtures may be a potential as drug for the treatment of osteoporosis.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제5권4호
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• pp.720-740
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• 2011

Wi-Fi-enabled portable devices have recently been introduced into the consumer electronics market. These devices download or upload content, from or to a host machine, such as a personal computer, a laptop, a home gateway, or a media server. This paper investigates the fairness among multiple Wi-Fi-enabled portable devices in a home network when they are simultaneously communicated with the host machine. First, we present that, a simple IEEE 802.11-based home network suffers from unfairness, and the fairness is exaggerated by the wireless link errors. This unfairness is due to the asymmetric response of the TCP to data-packet loss and to acknowledgment-packet loss, and the wireless link errors that occur in the proximity of any node; the errors affect other wireless devices through the interaction at the interface queue of the home gateway. We propose a QoS-provisioning framework in order to achieve per-device fairness and service differentiation. For this purpose, we introduce the medium access price, which denotes an aggregate value of network-wide traffic load, per-device link usage, and per-device link error rate. We implemented the proposed framework in the ns-2 simulator, and carried out a simulation study to evaluate its performance with respect to fairness, service differentiation, loss and delay. The simulation results indicate that the proposed method enforces the per-device fairness, regardless of the number of devices present and regardless of the level of wireless link errors; furthermore it achieves high link utilization with only a small amount of frame losses.

• 경영과정보연구
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• 제17권
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• pp.315-333
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• 2005

The Internet has been identified as the worlds fastest growing marketplace with seemingly limitless opportunities for marketing products and services. Logistics service quality is considered an essential strategy for success and survival in today's internet environment. Logistics excellence has become a powerful source of competitive differentiation within diverse marketing offerings of internet firms. The quality of logistics service performance is a key marketing component that helps create customer satisfaction. As the business environment has changed, the operations based definition of logistics service have evolved. The objective of this study is to examine the logistics service quality in internet shopping mall and the impact of logistics service quality on customer satisfaction. The quality factors of logistics service in this study are consist of five quality factor. The survey result is drive from a man experienced in used internet shopping mall. The finding suggest that logistics service quality of five factor had a positive effort on customer satisfaction. Specifically, timeliness had the most consistent positive effort on customer satisfaction.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2007년도 하계종합학술대회 논문집
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• pp.163-164
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• 2007

Consumer needs becomes various in a mature mobile telecommunication market, while service differentiation is hard to achieve. The competition among telecommunication service providers is getting fierce in order to maintain and obtain customers. Moreover, HSDPA caused the intense marketing activity for the move to the next generation customers. Under these circumstances, brand equity can be a key to a long-term competitive edge for mobile phone service providers. In this study, we identified the factors influencing mobile telecommunication brand equity, and its influence on the HSDPA service subscription behavior.

• 한국IT서비스학회지
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• 제8권1호
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• pp.217-229
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• 2009

Manufacturers have recently faced such problems like limitation of product differentiation, product commoditization and increased service request level from customers, Some manufacturers have responded the problems by introducing new business model, 'product and service integrated offering', which integrate product and its services as a bundled package, This article introduces innovative 7 cases of 'product and service integrated offering', and provides case analyses : types, methods, purposes, and risks of integration, The result of analysis, 4 strategic directions for product and service integration offering, could help manufacturers to adopt and build their model successfully, Further research topics are field survey with meaningful sample size including Business-to-Consumer and finding new causal relationships among variables like characteristics of industry, product, Integration, interaction between provider and customer, A development of design methodology on how to plan and develope a sound product service integration is the second next step for the research.

• 한국조리학회지
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• 제12권1호
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• pp.51-67
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• 2006

The purpose of this study is to examine the correlation between differentiation strategy of customer’s satisfaction and the effects on performance in family restaurants. Above all, looking into a device to take an internal competitive domination factor of family restaurants is the core purpose of this study. To achieve the purpose, a survey was conducted to 278 customers of family restaurants in Seoul. The result of this survey is as follows. First, the interior of family restaurants and responsibility of their employees had an effect on customer’s satisfaction. Secondly, menu/atmosphere satisfaction and employee’s appearance influenced quality performance of restaurants. In searching information on restaurants, reference group and visiting experience were highly recommended, leading to the importance of word of mouth.

• Journal of information and communication convergence engineering
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• 제4권4호
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• pp.141-146
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• 2006

In these days, wireless data services are becoming ubiquitous in our daily life because they offers several fundamental benefits including user mobility, rapid installation, flexibility, and scalability. Moreover, the requests for various multimedia services and the Quality of Service (QoS) support have been one of key issues in wireless data communications. Therefore the research relative to Medium Access Control (MAC) has been progressing rapidly. Especially a number of QoS-aware MAC schemes have been introduced to extend the legacy IEEE 802.11 MAC protocol which has not guaranteed any service differentiation. However, none of those schemes fulfill both QoS features and channel efficiency although these support the service differentiation based on priority. Therefore this paper studies a novel MAC scheme, referred to as Enhanced Distributed Coordination Function with Network Adaptation (EDCF-NA), for enhancements of both QoS and medium efficiency. It uses a smart factor denoted by ACK rate and Network Load Threshold (TH). In this paper, we study how the value of TH has effect on MAC performance and how the use of optimal TH pair improves the overall MAC performance in terms of the QoS, channel utilization, collision rate, and fairness. In addition, we evaluate and compare both the performance of EDCF-NA depending on several pairs of TH and the achievement of various MAC protocols through simulations by using Network Simulator-2 (NS-2).