• 유통과학연구
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• 제15권8호
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• pp.55-64
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• 2017

Purpose - PB products at convenience stores take up about 20% of all products, and strategies for differentiation from other companies and brand image building are very important. This study would investigate the strategy for differentiating PB products and successful brand building strategy, focusing on BGF Retail that is operating 'CU', the leader in the convenience store industry in Korea. Research design, data, and methodology - This study would attempt to make an exploratory approach to PB products limited to those in convenience stores. As a research subject, this study chose BGF Retail, the operator of CU, which is the leader in the convenience store industry in Korea and chose the case study method in order to examine the strategy for differentiating PB products in convenience stores more in depth. For this purpose, this study collected materials such as papers, newspaper articles and various reports on convenience store-related PB products and conducted an in-depth study including more practical contents through an interview with CU workers. Results - CU pursued the diversity of PB products and has had the diversity of products, more than 120 kinds. It founded a product research institute and has been in charge of the differentiation strategy from planning products to launching them. Changing the target layer of consumers to those in middle age of the 40s-50s, it succeeded in the strategy expanding the consumer class. In the long run, despite it changed the name of the company, it has built a successful image, and both revenue and operating profit have continuously grown up. Conclusions - In results, CU has reset the changing main target population, and the product research institute succeeded in the innovation of products, reflecting new trends the customers want. Through this study, the practical implications could be provided for competitors.

• 한국전자파학회논문지
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• 제18권7호
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• pp.766-773
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• 2007

무선 센서 네트워크는 전력 및 주파수 사용이 매우 제한적이지만, 멀티미디어 센서 기술의 발전에 따라 고용량의 데이터를 전송할 수 있는 통신 시스템 개발이 요구되어진다. 협력 통신 시스템은 노드와 중계 노드의 조력을 통해 공간 다이버시티를 획득하고, 이에 따라 통신 전력을 감소시킬 수 있다는 장점을 가지고 있다. 기존의 협력 통신 시스템은 하나의 중계 노드가 하나의 센서 노드의 데이터 전송을 도와줌에 따라 노드의 동작이 빈번하게 발생한다. 이는 네트워크 수명을 급격히 단축시키는 원인으로 작용한다. 본 논문에서는 하나의 중계 노드가 M개의 센서 노드의 데이터 전송을 돕는 것을 제안한다. 이를 통하여 제안한 시스템은 기존 시스템과 동일한 다이버시티 효과를 획득하고 동시에 주파수 대역, 전력 및 중계 노드의 수를 감소시킨다. 또한, 센서 네트워크의 특성상 주위에 인접한 노드로 인한 신호 간섭이 발생하는데, 이를 직교성을 가진 부반송파를 이용하여 개선한다. 마지막으로 센서 노드들과 중계 노드의 전력 할당에 따른 시스템 성능을 분석하였다.

• Asian-Australasian Journal of Animal Sciences
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• 제26권1호
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• pp.1-18
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• 2013

The elements that determine the success of development projects on goats and the prerequisites for ensuring this are discussed in the context of the bewildering diversity of goat genetic resources, production systems, multifunctionality, and opportunities for responding to constraints for productivity enhancement. Key determinants for the success of pro-poor projects are the imperatives of realistic project design, resolution of priorities and positive impacts to increase investments and spur agricultural growth, and appropriate policy. Throughout the developing world, there exist 97% of the total world population of 921 million goats across all agroecological zones (AEZs), including 570 breeds and 64% share of the breeds. They occupy a very important biological and socioeconomic niche in farming systems making significant multifunctional contributions especially to food, nutrition and financial security, stability of farm households, and survival of the poor in the rural areas. Definitions are given of successful and failed projects. The analyses highlighted in successful projects the value of strong participatory efforts with farmers and climate change. Climate change effects on goats are inevitable and are mediated through heat stress, type of AEZ, water availability, quantity and quality of the available feed resources and type of production system. Within the prevailing production systems, improved integrated tree crops - ruminant systems are underestimated and are an important pathway to enhance C sequestration. Key development strategies and opportunities for research and development (R and D) are enormous, and include inter alia defining a policy framework, resolution of priority constraints using systems perspectives and community-based participatory activities, application of yield-enhancing technologies, intensification, scaling up, and impacts. The priority for development concerns the rainfed areas with large concentrations of ruminants in which goats, with a capacity to cope with heat tolerance, can be the entry point for development. Networks and networking are very important for the diffusion of information and can add value to R and D. Well formulated projects with clear priority setting and participatory R and D ensure success and the realisation of food security, improved livelihoods and self-reliance in the future.

• 한국환경복원기술학회지
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• 제2권2호
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• pp.53-61
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• 1999

This study was conducted to determine the optimal collecting time and methods of utilization of forest topsoil as a seed-bank source for revegetation materials of slopes. From April to November of 1998, nursery seedbeds in the greenhouse of Seoul National University were seeded with mixtures of forest topsoil and seeds. The nursery seedbeds were treated to evaluate the effect of depths of forest topsoil and seeding amounts. Seasonal experiments with $3{\times}3$ factorial design were conducted in April, June and August. More than 40 seedlings/$m^2$ were observed as the naturally-emerged species in the plot, treated with the top-layer forest soil within the depth of 10cm. However, it was found, as seeding more seeds, the number of appearance of the naturally-emerged species reduced because of the heavy competition between the seeded and the naturally-emerged. According to the results of this research, it is recommended that seeding amount should be no more than 1,000 seeds/$m^2$ to avoid the severe competition. Also it was observed that the forest topsoil collected in spring(April) is better than that collected in summer. The more species of the naturally-emerged were found in the forest topsoil collected in spring. Forest-topsoil-mixed-materials as a seed-bank source could significantly increase the plant diversity and productivity. Effective use of forest topsoil as a seed-bank source may become a valuable tool in future restoration of disturbed slopes for promoting plant community diversity and recycling of spoiled-soils from the slopes.

• Ocean and Polar Research
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• 제33권2호
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• pp.113-125
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• 2011

In order to assess the survival success of microphytoplankton species in ship ballast water, we examined microphytoplankton diversity from international commercial ships berthed at Ulsan and Pyeongtaek Ports, Korea, and also subjected them to laboratory studies. The ages of ballast water in each ship ranged from 1 to 365 days. Vessels originated from coastal China (Weihai, Lianyunsang and Shanghai), Chile, and from the Yellow and Pacific Oceans. The numbers of species and phytoplankton standing crops in uploaded ballast water were significantly related to the age of ballast water. The most diverse taxonomic group was diatoms. In the laboratory study, the value of in vivo fluorescence in M/V Spring Lyra gradually increased with increasing nutrients such as nitrate and phosphate. Phytoplankton in new (9 days), medium (31 days) and old (365 days) ballast water successfully survived under typical nutrient condition of port water and F/2 medium at $15^{\circ}C$ and $20^{\circ}C$, whereas phytoplankton in ballast water treatment did not survive, regardless of optimal temperature. Colonization process was dominated by diatoms; Skeletonema coastatum for M/V Spring Lyra, Thalassiosira pseudonana and Thalassiosira for M/V Han Yang, Thalassiosira pacifica and Odontella aurita for M/V Modern Express, and Chaetoceros pseudocurvisetus and Pseudo-nitzschia seriata for M/V Asian Legend. The successful establishment of non-native species was also related to nutrient richness. Our laboratory design can be applied as a practical tool to assess the survivability of invasive microphytoplankton introduced into local waters of Ulsan and Pyeongtaek.

• 한국통신학회논문지
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• 제36권2B호
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• pp.176-183
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• 2011

본 논문은 스마트 그리드를 비롯한 각종 미래 전력망 내 고속 데이터 전송을 타깃으로 한 SISO/MIMO-OFDM 기반 전력선통신 (PLC: power line communication) 방식의 구현 및 성능분석에 목적이 있다. 전력선통신 환경은 유선임에도 무선과 같은 다중경로 페이딩, 임펄스 잡음 등 매우 열악한 채널 특성을 갖는다. 다중경로 전력선 페이딩 채널은 Zimmermann 주파수 모델을 이용하며 임펄스 잡음 채널은 Middleton class A 모델을 이용한다. 본 논문에서는 주파수 선택적 다중경로 페이딩 특성을 갖는 전력선 채널 조건하에 공간 다이버시티 이득을 부가한 공간주파수 부호화 SISO/MIMO-OFDM 방식을 고려한다. 특별히 다중 안테나 경로와 다중 경로 페이딩의 다이버시티 이득을 효과적으로 결합한 최대비 합성 방식인 a&f-MRC를 이용한 기존 삼상 혹은 단상 PLC 시스템의 성능 개선 방안을 제시한다. 시뮬레이션을 통해 기존의 SISO/MIMO-OFDM 방식에 비한 성능우위를 입증하며 등비 합성법, 선택적 합성법과의 복잡도 대비 성능 비교로 시스템 설계상의 트레이드오프를 또한 제시한다. 임펄스 잡음지수 등 실제 PLC 채널 조건하에 체계적인 성능분석 및 시뮬레이션을 통해 적정 시스템 설계 파라미터를 도출한다.

• 한국통신학회논문지
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• 제31권2A호
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• pp.110-118
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• 2006

본 논문의 part-I에서는 연속 및 분산의 두 가지 부채널 구조에 대해 부채널 상에서의 SNR분포를 라이스 분포로 모델링하고 이의 통계적 속성을 살펴보았다. 이번 Part에서는 직교 주파수분할 다중접속 시스템의 하향링크 전송을 위해 두 라이스 파라미터를 CQI정보로 이용하는 일반화된 2단계 자원할당 알고리즘을 제시하고 각 부채널 구조에 대해 시스템의 평균 주파수 효율 성능을 분석한다. 연속 부채널 구조의 경우 부채널 대역폭은 시스템 설계의 핵심적인 파라마터로서 이에 따른 주파수 효율 성능의 변화에 초점을 두고 분석을 수행하였다. 수치적인 분석결과에 의하면 연속 부채널 구조에서 부채널 대역폭이 채널 coherence 대역폭보다 작은 경우 정상적인 다중 사용자 이득(multiuser diversity gain)을 얻을 수 있으나 부채널의 대역폭이 채널 coherence 대역폭보다 커지면서 이득은 점차 줄어든다.

• 복식
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• 제65권8호
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• pp.64-76
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• 2015

Gilles Deleuze highly evaluated Baroque as the expression body that implements the fold theory, a philosophical thinking about the nature of beings. This can be seen as a meaning that Baroque implements the essence of the world, or the power constituting that essence. In addition, the beauty of Baroque focuses on 'New Harmony' the sum of partial forms caused by each element, and not Platonic harmony. he evaluated the aesthetic of Baroque costume as 'acquisition of liberation and autonomy', 'derived force from infinite spiritual forces'. This study analyzed the contents of the Aesthetic of Baroque costume based on the reviewed Deleuze's folding theory, Baroque aesthetics, and views of Baroque costume. As a result, it inferred the aesthetic of Baroque costume into four types, which are as follows: open structural openness, overlapping structural dynamics, integrated structural diversity, and relationship structural integrity. This study analyzed the aesthetic of Baroque costume based on Deleuze's philosophical thinking. The analysis showed that its aesthetics, which focused on "New Harmony", created energy of life and a venue for expression of power, as the aesthetics eliminated the prejudice of complexity and excessive decoration. In addition, Baroque costume is not the simple historical costume of the past. Instead, it is one of power and spirit, still existing in modern fashion. Baroque costume's formativeness and Paradigm can be said to provide the creative principle important for modern fashion because the aesthetics implemented in Baroque costume accepts free spirit, new challenge, difference and diversity, and is similar to the spirit pursued by modern art and fashion.

• Asian-Australasian Journal of Animal Sciences
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• 제25권4호
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• pp.452-461
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• 2012

Four, ruminally fistulated crossbred (Brahman${\times}$native) beef cattle with initial body weight of $420{\pm}15kg$ were randomly assigned according to a $4{\times}4$ Latin square design. The dietary treatments were mulberry leaf pellet (MUP) supplementation at 0, 200, 400 and 600 g/hd/d with rice straw fed to allow ad libitum intake. All steers were kept in individual pens and supplemented with concentrate at 5 g/kg of body weight daily. The experiment was 4 periods, and each lasted 21 d. During the first 14 d, all steers were fed their respective diets ad libitum and during the last 7 d, they were moved to metabolism crates for total urine and fecal collection. It was found that increasing MUP levels resulted in linearly increasing rice straw and total intakes (p<0.05). Ruminal temperature and pH were not significantly affected by MUP supplementation while $NH_3$-N concentration was increased (p<0.05) and maintained at a high level (18.5 mg/dl) with supplementation of MUP at 600 g/hd/d. Similarly, viable total bacteria in the rumen and cellulolytic bacteria were enriched by MUP supplementation at 600 g/hd/d. However, the rumen microbial diversity determined with a PCR-DGGE technique showed similar methanogenic diversity between treatments and sampling times and were similar at a 69% genetic relationship as determined by a UPGMA method. Based on this study, it could be concluded that supplementation of MUP at 600 g/hd/d improved DM intake, ruminal $NH_3$-N, and cellulolytic bacteria thus iimproving rumen ecology in beef cattle fed with rice straw.

• 한국콘텐츠학회논문지
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• 제13권11호
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• pp.608-616
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• 2013

우리나라 창작 뮤지컬 보호 방안 가운데 하나로 '스테이지 쿼터제' 도입 논의가 활발하다. 심층 인터뷰 결과, 전문가들은 이 제도의 도입에 대부분 찬성했으며, 문화 다양성의 확보가 주된 목적이라고 밝혔다. 제도 찬성론자들이 제안한 모델은 '1000석 이상 국공립 대형극장에 한해 연간 뮤지컬 공연일수의 20~30%선의 할당률을 법률로 정해 창작 뮤지컬이 자생력을 확보할 때까지 한시적으로 적용하는 방안'으로 집약되었다. 반대론자들은 정부의 창작 뮤지컬 진흥책 및 예산 마련을 시급한 대안으로 제시하였다. 연구 결과는 이 제도가 긴요하기 때문에 꼭 실시하되, 집행력이 강한 입법을 통해 제도화해야 한다는 것을 함의한다. 그러나 제시안은 대상, 쿼터 비율, 기한 등에 제한을 두고 있어 정책의 밑그림을 그릴 때 이해관계자들과 충분히 협의해 공연업계의 경영위축과 같은 부작용을 최소화하도록 해야 한다는 점을 암시하고 있다.