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검색결과 1,110건 처리시간 0.032초

New Perspectives on Plant Defense Responses through Modulation of Developmental Pathways

  • Chung, Kwi-Mi;Igari, Kadunari;Uchida, Naoyuk;Tasaka, Masao
    • Molecules and Cells
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    • 제26권2호
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    • pp.107-112
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    • 2008
  • Invasion mechanisms of pathogens and counteracting defense mechanisms of plants are highly diverse and perpetually evolving. While most classical studies of plant defense have focused only on defense-specific factor-mediated responses, recent work is beginning to shed light on the involvement of non-stress signal components, especially growth and developmental processes. This shift in focus links plant resistance more closely with growth and development. In this review, we summarize our current understanding of how pathogens manipulate host developmental processes and, conversely, of how plants deploy their developmental processes for self-protection. We conclude by introducing our recent work on UNI, a novel R protein in Arabidopsis which mediates cross-talk between developmental processes and defense responses.

수직방향으로 정렬된 정사각주 후류에서의 3차원 불안정성 (TRANSITION IN THE FLOW PAST SIDE-BY-SIDE SQUARE CYLINDERS)

  • 최준범;장용준;윤동혁;양경수
    • 한국전산유체공학회지
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    • 제15권2호
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    • pp.62-70
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    • 2010
  • Secondary instability in the flow past two square cylinders in side-by-side arrangements is numerically studied by using a Floquet analysis. The distance between the neighboring faces of the two cylinders (G) is the key parameter which affects the secondary instability under consideration. In this paper, we present the critical Reynolds number for the secondary instability and the corresponding spanwise wave number of the most unstable (or least stable) wave for each G. Our results would shed light on a complete understanding of the onset of secondary instability in the presence of two side-by-side square cylinders.

Drivers of Corporate Social Responsibility Leading to Sustainable Development

  • Sy, Maria Victoria U.
    • Industrial Engineering and Management Systems
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    • 제13권3호
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    • pp.342-355
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    • 2014
  • Organizational dedication to corporate social responsibility (CSR) is set off by a number of driving forces, such as enhancing corporate financial performance, concern for the environment, regulatory compliance, and social equity. This article aims to ascertain the uptake of CSR among firms in the Philippines and Thailand leading to the attainment of sustainable development. The results revealed that CSR is carried out by the companies primarily to enhance their competitive advantage and legal compliance, which are deemed essential to the firms' existence. This study seeks to contribute to understanding how companies undertake their operations based on socially responsible practices so that the theoretical conceptualizations of sustainability can be developed. By determining what prods companies to pursue CSR, it will shed light on the mechanism that promotes the existence of sustainable organizations, linking it with CSR and the companies' objectives and strategies.

Assembled and Annotated Genome of Plasmodiophora brassicae with Insights into Developmental Stage-Specific

  • Schwelm, Arne
    • 한국균학회소식:학술대회논문집
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    • 한국균학회 2015년도 춘계학술대회 및 임시총회
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    • pp.23-23
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    • 2015
  • Plasmodiophora brassicae is a major disease threat for Brassica oil and vegetable crop production worldwide. The causal agent is a Plasmodiophorid, which are obligate biotrophic plant-pathogenic protists in the Rhizarian kingdom. Although the Plasmodiophorids include other important agricultural pathogens such as Polymyxa betae, Spongospora subterranea, their biology remains poorly understood due to their intracellular biotrophic life style. I will present the assembled and annotated genome of P. brassicae, with insights into developmental stage-specific. We provide the first genomic data for pathogenic Rhizaria. The exploitation of the life stage specific transcripts will shed light in the understanding of the life cycle at a molecular basis, which will in the long run help to understand and control club root disease. Our data also fill an important gap for the understanding of the eukaryotic tree of life, since this is only the third genome of the eukaryotic kingdom of Rhizaria.

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변조 업데이트를 통해 전파되는 모바일 악성어플리케이션 모델 연구 (A Research on Mobile Malware Model propagated Update Attacks)

  • 주승환;서희석
    • 디지털산업정보학회논문지
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    • 제11권2호
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    • pp.47-54
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    • 2015
  • The popularity and adoption of smart-phones has greatly stimulated the spread of mobile malware, especially on the popular platforms such as Android. The fluidity of application markets complicate smart-phone security. There is a pressing need to develop effective solutions. Although recent efforts have shed light on particular security issues, there remains little insight into broader security characteristics of smart-phone application. Now, the analytical methods used mainly are the reverse engineering-based analysis and the sandbox-based analysis. Such methods are can be analyzed in detail. but, they take a lot of time and have a one-time payout. In this study, we develop a system to monitor that mobile application permissions at application update. We had to overcome a one-time analysis. This study is a service-based malware analysis, It will be based will be based on the mobile security study.

현대 패션에 나타난 중첩 기법의 유형과 사례분석 (Types of Overlapping Technique in Contemporary Fashion)

  • 임지아;김민자
    • 복식
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    • 제63권8호
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    • pp.106-124
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    • 2013
  • Compared to traditional fashion design, modern fashion design is used as a means that creates original and multiple types of beauty beyond fixed and standardized concept and form. Overlapping technique is the most suitable means to shed classical, authoritative and conservative form and it enables diverse borrowing and quotation for creation. This study aimed to analyze overlapping techniques that are expressed in art, architecture and fashion to find out its characteristics in the field of fashion. The result of this study is as follows. Based on theories of visual perception and advance research, types of overlapping technique were classified as pile, repetition, penetration and transparency. When comparing overlapping techniques in modern fashion with those of painting and architecture, fashion was distinctive in that it had movement and communicativeness through overlapping of fashion and the human body. Therefore, the overlapping technique has wide application and adaptation and can cause specialty, movability, communicativeness and collectivity, which can arouse psychological inspiration.

소설에 나타난 한국 주택의 생리위생공간과 관련용어의 변화 연구 (A Study on the Transition and the Terminology of Sanitary Spaces in Korean Houses Based on the Analysis of Novels)

  • 김대년
    • 대한가정학회지
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    • 제37권10호
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    • pp.43-54
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    • 1999
  • The purpose of this study is to clarify the transition and terminology of sanitary spaces in Korean houses, based on the analysis of novels. The resets are as follows. The sanitary space huts been developed in all aspects including locations and facility levels. Duikan, Pyunso, Tongsi, Whajangsil, and Yoksil were the terminology of sanitary space that appeared often in the novels. Before 1930, the word most frequently mentioned was Duikan. Whajangsil and Yoksil appeared shortly between 1930-1750. Duikan, Pyunso, and Tongsi were presented again between 1950-1970. Whajangsil and Yoksil were substituted for most other words after 1980. Other than the usual function of sanitary space, these areas also used as hiding spaces and places where one could observe others secretly. The sanitary spaces in most novels were located behind kitchens, nearby fences or stables and were typically unpleasant places with a messy dung tub, no lighting system, and a shed-like construction.

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FEED AND FODDER AVAILABILITY IN THE PABNA MILK SHED AREA, BANGLADESH

  • Islam, M.;Sarker, N.R.;Islam, M.M.;Yasmin, L.
    • Asian-Australasian Journal of Animal Sciences
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    • 제8권3호
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    • pp.301-305
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    • 1995
  • The study was conducted at village level in Pabna milkshed areas of Bangladesh to asses the existing feed and fodder sources of cattle. The results showed that the overall number of cattle per farm family was 7.17 and chicken represents highest number (15.57) per farm family in this area. The results also indicated that during monsoon season the bathan is planted with Vigna mungo and Lathyrus sativus and average grazing hours per day varied from 1.1 in October to 5.6 in February. In Summer, they were offered naturally grown Cynodon dactylon with supplementary feeding of rice straw. The study further showed that the highest (65.7%) feed scarcity was found during mid April to mid May followed by mid June. The cultivation of Vigna mungo was highest (76.71%) compared to Lathyrus sativus by the farmers in the bathan areas. The major constraint to cattle production is the scarcity of quality feed during mid October to mid November.

Toward a Conceptual Clarification of Foreign Language Anxiety

  • Kim, Young-Sang
    • 영어어문교육
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    • 제11권4호
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    • pp.1-20
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    • 2005
  • Despite the noteworthy increase in the number of FL anxiety studies, inconsistencies associated with the effects of FL anxiety on language learner performance have been reported in literature. Such conflicting results seem to be attributable in part to unstable conceptualization of the FL anxiety construct and its measure. This paper purported to address the emerging call for a theoretical clarification of the construct at hand as a preface to a clear picture of language anxiety on a conceptual ground. This paper not only covers aspects of general anxiety from psychological perspectives, but examines how FL anxiety and its associated concepts have been conceptualized in the literature. Inconsistent results that pertain to FL learning were also delineated. Given the drawbacks found in the exiting theories of FL anxiety, several points were taken into account for a refinement of the conceptual framework. This attempt will hopefully shed new light on the construct per se and prove conducive to the development of the field of English education.

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An Algorithm for Predicting the Relationship between Lemmas and Corpus Size

  • Yang, Dan-Hee;Gomez, Pascual Cantos;Song, Man-Suk
    • ETRI Journal
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    • 제22권2호
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    • pp.20-31
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    • 2000
  • Much research on natural language processing (NLP), computational linguistics and lexicography has relied and depended on linguistic corpora. In recent years, many organizations around the world have been constructing their own large corporal to achieve corpus representativeness and/or linguistic comprehensiveness. However, there is no reliable guideline as to how large machine readable corpus resources should be compiled to develop practical NLP software and/or complete dictionaries for humans and computational use. In order to shed some new light on this issue, we shall reveal the flaws of several previous researches aiming to predict corpus size, especially those using pure regression or curve-fitting methods. To overcome these flaws, we shall contrive a new mathematical tool: a piecewise curve-fitting algorithm, and next, suggest how to determine the tolerance error of the algorithm for good prediction, using a specific corpus. Finally, we shall illustrate experimentally that the algorithm presented is valid, accurate and very reliable. We are confident that this study can contribute to solving some inherent problems of corpus linguistics, such as corpus predictability, compiling methodology, corpus representativeness and linguistic comprehensiveness.

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