• The Plant Pathology Journal
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• 제28권2호
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• pp.137-148
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• 2012

During investigating of shiitake mushroom competitors, 289 isolates of Trichoderma spp. were collected from shiitake mushroom farms in different districts and the Forest Mushroom Research Center of Korea, among which 29 representative strains were selected. Based on the DNA sequences of the rpb2 and tef1 genes and the ITS rDNA, and their morphological characteristics, they were identified as T. atroviride, T. citrinoviride, T. harzianum, T. longibrachiatum, and two undescribed species, Trichoderma spp. 1 and 2, which are considered to be the candidate of new species. Competition tests between Lentinula edodes (Sanjo302) and the Trichoderma species indicated that the six species of Trichoderma were significantly different from each other in terms of their ability to invade the mycelial blocks of shiitake. In both of dual cultures on potato dextrose agar and sawdust media, Trichoderma spp. 1 and 2 strongly invaded the mycelial blocks of shiitake. Our results suggest that the two Trichoderma species may cause potentially serious economic losses in shiitake cultivation of Korea.

• 한국지능시스템학회논문지
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• 제22권3호
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• pp.312-318
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• 2012

최근에는, 극한 분야에서 해양로봇의 필요성이 제기되고 있으나, 그 기반이 매우 부족한 실정이다. 다행히 로봇경진대회가 활성화되고 로봇교육에 대한 수요가 증가하는 추세이므로, 해양로봇키트의 개발/보급을 통하여 해양로봇 연구개발/산업화 기반을 마련하고 전문인력을 양성하는 것이 바람직하다. 그런데, 기존에는 수중이동 및 표적 탐지/회피가 가능한 해양로봇경진대회용 수중형 자율운항 해양로봇키트가 없었다. 이 문제를 해결하기 위해서 수중이동성, 수중방수성 및 무게조절성이 우수한 보급형 해양로봇키트가 개발되었다. 개발된 키트의 성능 검증을 위해서 Surge, Pitch, Yaw, 장애물회피 등의 시험 평가가 수행되었다. 시험평가 결과는 개발된 키트의 실제 적용 가능성을 보여준다.

• 한국산림과학회지
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• 제105권1호
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• pp.86-92
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• 2016

본 연구는 가문비나무 집단 내 치수형성이 잘 이루어지지 않는 이유를 찾고자 실시하였다. 가문비나무 집단 내 치수형성을 방해하는 타감물질의 존재여부를 확인하고, 타감작용을 일으키는 수종을 확인하기 위해서 타감물질을 추출하여 종자발아 및 유묘생장에 미치는 영향을 조사하였다. 수용성 추출액은 GC/MS를 사용하여 수용성 페놀화합물의 유무를 확인하였다. 가문비나무 집단에서 채취한 주변 경쟁수종 잎의 수용성 추출물은 가문비나무 종자의 발아를 감소시켰으며, 유묘의 생장을 저해하였다. 추출액의 수용성 페놀화합물을 분석한 결과, borneol, Camphor, Longifolen, Longifolenaldehyde, Norbornene, Ketobornane, 1,8-Cineole, ${\alpha}$-Cadinol이 검출되었는데, 이들은 monoterpenoids 화합물로서, 타감물질로 잘 알려진 화합물들이다. 결론적으로, 가문비나무 집단 내 치수형성에 영향을 미치는 인자중의 하나가 주변 경쟁식생들의 타감효과에 의한 것으로 판단된다.

• 산경연구논집
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• 제9권3호
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• pp.69-79
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• 2018

Purpose - Competition among cities around the world are rapidly shifting from competition of production factors such as labor costs and quality of raw materials to competition between the consumption factors such as quality of life, settlement environment, culture, and place. The entry into the era of competition between consumption factors is not only attracting investment for strengthening city competitiveness, but also actively inducing urban image reconstruction and new image making. Therefore, various studies related to urban marketing are being carried out. The object of this study is to investigate the effect of city brand image on city brand recognition and city loyalty based on the questionnaire of external citizens about Changwon city. Research design, data, and methodology - The data were collected from 200 Seoul and Busan citizens. Reliability and exploratory factor analysis were conducted through the SPSS program, and confirmatory factor analysis and structural equation modeling were conducted by using the AMOS program. Results - As a result of the hypothesis test, six hypotheses were adopted among the nine hypotheses. In summary, pleasant image, dynamic image, and good administrative image have a significant positive impact on city brand recognition. The magnanimous image did not have a significant effect on city brand recognition. In the impact of city brand image on city loyalty, magnanimous image and good administrative image had significant positive impact on city loyalty. Pleasant images and dynamic images did not significantly affect city loyalty. In addition, city brand recognition positively influenced city loyalty. Conclusions - First, it is possible to say that there is an academic significance of this research in its contribution to regional revitalization by investigating mutual influences in urban aspect by combining place marketing with image, recognition, and loyalty. Secondly, kinetic images such as pleasant image and dynamic image have more influence on recognition, and static images such as magnanimous images have more influence on loyalty. So, further research will be necessary to establish theories. Finally, In order to increase city brand recognition and city loyalty to local city, efforts should be made to improve urban images such as pleasant image, magnanimous image, dynamic image, and good administrative image.

• 한국조경학회지
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• 제33권5호통권112호
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• pp.15-30
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• 2005

A deserted town once vibrant with active commercial activities around a railroad station now tries to find a way to escape from depression and revive its life with a renewed civic pride. An open space adjacent to the Main Street, the commercial district of Buzzards Bay, Massachusetts, is waiting to be transformed and reconfigured to be a new ecological park to boost the economy of the community. Bridge Park is 26-acre land abutting the Cape Cod Canal with a railroad bridge as a backdrop. The existing condition of the site with a small salt marsh, woodland, lawn, and the vestige of old railroad easement along with the proximity to the commercial district poses an interesting question of how to make a medium scaled ecological park within an urban context. This paper examines the winning design proposals for the Bridge Park submitted to the International Design Competition held in April, 2005. Six winning proposals were introduced and discussed in terms of categories related to the trend of contemporary landscape design such as; 1) ecological ordinariness and geometric figures, 2) topography and spatial imagination, 3) minimal programs and open put 4) time and process oriented design, 5) park and economic effects and 6) diagrammatic plan and photo montage. Bridge Park Design Competition confirms the complex characteristics representing the contemporary landscape design overcoming the dichotomy between nature and culture and the 'pastoral ecological design' and 'landscape as an art'. The Park becomes the activating agent for the community rejecting the conventional and passive role as a romantic picturesque landscape. Bridge Park International Design Competition is a meaningful event to test the idea of new ecological urban park, and to fine-tune the trend of the contemporary urban park design.

• 유통과학연구
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• 제13권1호
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• pp.7-18
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• 2015

Purpose - This study integrates a corporate competition system with a bird predation system to examine how organizational strategic adjustment capacity influences firm performance. By proving the prominent effects on performance, a financial vector is constructed to represent corporate strategic adjustment results, and an operation capacity vector is constructed, which can be categorized as a parameter for locating birds. All these works help us to propose a new method of investment, the portfolio decision model based on the strategic adjustment capacity. Research design, data, and methodology - Strategic adjustment capacity can be decomposed into three aspects: the organizational learning capacity from the top firms, the extent to which firms maintainor rely on the best operational capacity vector in history, and the ability to eliminate the disadvantages or retain the advantages of the operation capacity vector from the previous year. The method of solving cyclic equations is designed to evaluate strategic adjustment. Firms manufacturing specialized equipment are chosen to test the effects of the strategic adjustment capacity on three aspects of firm performance. Results - There is a positive correlation between the capacity to learn from the best firms and performance improvement. The relationship between the dependence or maintenance of a firm's advantages and performance improvement is a U-shape curve, and there is no significant effect of inertial control on performance improvement. Conclusions - A firm's competition system is a sophisticated adaptation, and competitive advantage and performance can be investigated based on the principles of competition in nature.

• Journal of Contemporary Eastern Asia
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• 제13권2호
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• pp.57-68
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• 2014

How do party organizations respond to newly evolving social groups? Research on Indian party organizations reveals that in multiethnic societies with uneven modernization between social groups, internally competitive parties respond better to newly evolving groups. Moreover, it is claimed: the same dynamic works vis-$\grave{a}$-vis homogenous societies with cleavages based on economic differences; and, the pattern holds regardless of differences in electoral institutions. This study examines these claims by testing whether factional competition correlated with recruitment into Japan's Liberal Democratic Party in 1972 and 1983. Japan had a single-nontransferable-vote system with multi-member districts, while the research on India assumes a first-past-the-post system with single-member districts. This study conducts a difference of means test on the population of new and old politicians in the LDP in 1972 and 1983 with a pooled variance adjustment to account for differences in populations' size. The findings show that intra-party competition and recruitment are not correlated in Japan, thus tentatively rejecting both claims.

• 대한전기학회논문지:전기기기및에너지변환시스템부문B
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• 제50권7호
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• pp.323-330
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• 2001

Niching method enables the genetic algorithm(GA) to be applied to the problems that require the location of multiple solutions in the search space, but these methods have fatal disadvantages. The main disadvantage is that the method requires too much calculation of object function. In this paper, a niching method using restricted competition selection(RCS) combined with a pattern search method(PSM) is proposed to identify multiple niches more efficiently and fast in a multimodal domain. The validity of the proposed method is verified by the simulation of test functions and the optimal design of an torque motor.

• 전기학회논문지
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• 제66권1호
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• pp.16-22
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• 2017

In order to reduce costs of electricity energy at periods of peak demand, there has been an exponential interest in Demand Response (DR). This paper discusses the effect on the participants' behavior in response to DR. Under the assumption of perfect competition, the equilibrium point of the electricity market with DR is derived by modeling a DR curve, which is suitable for microeconomic analysis. Cournot model is used to analyze the electricity market of imperfect competition that includes strategic behavior of the generation companies. Strategic behavior with DR makes it harder to compute equilibrium point due to the non-differential function of payoff distribution. This paper presents a solution method for achieving the equilibrium point using the best response function of the strategic players. The effect of DR on the electricity market is illustrated using a test system.

• 예술인문사회 융합 멀티미디어 논문지
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• 제6권7호
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• pp.151-158
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• 2016

The 21st century is an era of knowledge innovation. Under the era background of knowledge explosion and information explosion, the competition among countries is ultimately talent competition. High-end talents are the core element of national competitiveness. Today, with the rapid development of science and technology and knowledge changing with each passing day, the cultivation of students' creativity is the requirement of social development and national progress. This paper makes a comparison between the creativity of business school students in China and Korea with questionnaire survey. Empirical study and comparative study with university students by grade in China and Korea are performed. The test results indicates that there are differences between Korean and Chinese students. Also, university students' creativity are different by grade. This study finds internal reasons for creativity differences and puts forward counter measures and methods for improving students'creativity.