• Title/Summary/Keyword: critical evidence

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Physical Defect Recovery Methodology of Hard Disk (하드디스크의 물리적 고장 복구 방법론)

  • Kim, Yong-Ho;Yoo, Jae-Hyung;Kim, Kui-Nam J.
    • Convergence Security Journal
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    • v.8 no.1
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    • pp.129-141
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    • 2008
  • This paper analyzes repairing methods in terms of symptoms of hard disk through maker's knowhow and skill from experience. However, though an user tries this method, if the user is not skilled person, it can be failed. A defect Hard disk should be diagnosed and treated carefully. And also it should be executed after enough practice. This analyzation was tried by examination with the naked eye, sound, and the frequency of symptoms. And the result can be precious data for restoration of critical evidence.

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MicroRNAs as critical regulators of the endothelial to mesenchymal transition in vascular biology

  • Kim, Jongmin
    • BMB Reports
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    • v.51 no.2
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    • pp.65-72
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    • 2018
  • The endothelial to mesenchymal transition (EndMT) is a newly recognized, fundamental biological process involved in development and tissue regeneration, as well as pathological processes such as the complications of diabetes, fibrosis and pulmonary arterial hypertension. The EndMT process is tightly controlled by diverse signaling networks, similar to the epithelial to mesenchymal transition. Accumulating evidence suggests that microRNAs (miRNAs) are key regulators of this network, with the capacity to target multiple messenger RNAs involved in the EndMT process as well as in the regulation of disease progression. Thus, it is highly important to understand the molecular basis of miRNA control of EndMT. This review highlights the current fund of knowledge regarding the known links between miRNAs and the EndMT process, with a focus on the mechanism that regulates associated signaling pathways and discusses the potential for the EndMT as a therapeutic target to treat many diseases.

Effects of Dietary Antimicrobial Agents, Probiotics or Yucca Extract on Urease Activity and Ammonia Production in the Chicken Intestine (사료중 항균제, 생균제 또는 유카 추출물이 닭의 장내 요소 분해효소 활성과 암모니아 생산에 미치는 영향)

  • 김규일;여진모
    • Korean Journal of Poultry Science
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    • v.22 no.2
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    • pp.105-115
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    • 1995
  • The balance of microbial populations in the gastrointestinal (GI) tract of all warm-blooded animals is critical to the maintenance of health and resistance to disease. The composition of the populations can be altered by diet and environment, making the host animal susceptible to disease, and reducing growth rate and feed efficiency. Some feed additives including antimicrobial agents, prohiotics or yucca extract have been used to promote growth and feed utilization. There is evidence that part of growth-promoting effect of those feed additives results from the suppression of microbial urease activity or ammonia production in the GI contents of animals. Over 200 microbial species have been known to produce urease and the product of urea hydrolysis, ammonia, is toxic to animals. Carefully tested probiotics or other urease-suppressing agents can be a possible alternative to antimicrobial agents including antibiotics as growth promotants used for animals feeds.

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A study on vibration characteristics caused by backlash of gear-box in escalator with chain-sprocket drive mechanism (체인-스프라켓 메커니즘을 갖는 에스컬레이터에서 기어박스 백래시로 인한 이상진동에 관한 연구)

  • Kwon, Yi-Sug;Park, Seon-Ryong;Suh, Jong-Ho;Hong, Seong-Wook;Park, No-Gil
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2002.11a
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    • pp.329.2-329
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    • 2002
  • This paper presents an improved escalator dynamic model so as to reflect the experimental observation on the pseudo-resonance affected by load applied. The experimental evidence reveals that backlash of gearbox as well as sag of driving chain are most critical factors to the pseudo-resonance in escalators. The dynamic model effectively reflects vibration characteristics measured in real escalators with respect to different conditions of driving chain and the number of passengers. (omitted)

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Directing the turning behavior of carp using virtual stimulation

  • Kim, Cheol-Hu;Kim, Dae-Gun;Kim, Daesoo;Lee, Phill-Seung
    • Ocean Systems Engineering
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    • v.7 no.1
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    • pp.39-51
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    • 2017
  • Fishes detect various sensory stimuli, which may be used to direct their behavior. Especially, the visual and water flow detection information are critical for locating prey, predators, and school formation. In this study, we examined the specific role of these two different type of stimulation (vision and vibration) during the obstacle avoidance behavior of carp, Cyprinus carpio. When a visual obstacle was presented, the carp efficiently turned and swam away in the opposite direction. In contrast, vibration stimulation of the left or right side with a vibrator did not induce strong turning behavior. The vibrator only regulated the direction of turning when presented in combination with the visual obstacle. Our results provide first evidence on the innate capacity that dynamically coordinates visual and vibration signals in fish and give insights on the novel modulation method of fish behavior without training.

Disaster Resilience in Self-Organized Interorganizational Networks: Theoretical Perspectives and Assessment

  • Jung, Kyujin
    • Journal of Contemporary Eastern Asia
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    • v.15 no.1
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    • pp.98-110
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    • 2016
  • Building resilient community is often a complicated process to be gained by interorganizational collaboration. Since patterns of interorganizational relations among governments and sectors are constantly changing due to internal and external factors in the field of emergency management, understanding the dynamic nature of interorganizational collaboration is a critical step for improving a community’s ability to bounce back from a catastrophic event. From two theoretical perspectives, this research aims to examine the essential role of working across levels of governments and sectors in building resilient community by focusing on sources of community resiliency and a strong commitment. The empirical evidence highlights the importance of studying resilience as a way to understand the motivation and incentive for organizations to work jointly during emergency response. The study of organizational resilience also draws attention for the importance of various forms of interorganizational collaboration such as formal and informal relations. It also highlights how local organizations can utilize their relations to seek resources without necessarily jeopardizing their ability to perform their core organizational functions.

Rites of Zhou Core Values of City Building and Critical Review of Flat Conformational Analysis through Its Annotations (『주례(周禮)』 주(注)·소(疏)를 통해 논의된 도성건설(都城建設)의 핵심과 평면적 형태해석의 비판적 검토)

  • Kang, Seo-Yeon
    • Journal of architectural history
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    • v.25 no.3
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    • pp.7-22
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    • 2016
  • Of all the annotations of Rites of Zhou for 2,000 years, there is no single line of history of ore contents related to city building in its current perspective. This is because the definitive evidence of the interpretation of related phrases is regarded as top-level guidelines called "辨方正位(Byeonbang-Jeongwi)", and their specific contents have been discussed in '匠人建國(Jangin-Geonguk)'. The phrases of '匠人營國(Jangin-Yeongguk)', considered to be the key buzzword related to city building, must be reconsidered for these reasons. As such, this paper strives to analyze the system of logic formed by consistent interpretation that flowed for 2,000 years from Han to Qing dynasties, and to discover the principles of city building used in Confucian classics.

Mitochondrial noncoding RNA transport

  • Kim, Kyoung Mi;Noh, Ji Heon;Abdelmohsen, Kotb;Gorospe, Myriam
    • BMB Reports
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    • v.50 no.4
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    • pp.164-174
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    • 2017
  • Mitochondria are cytosolic organelles essential for generating energy and maintaining cell homeostasis. Despite their critical function, the handful of proteins expressed by the mitochondrial genome is insufficient to maintain mitochondrial structure or activity. Accordingly, mitochondrial metabolism is fully dependent on factors encoded by the nuclear DNA, including many proteins synthesized in the cytosol and imported into mitochondria via established mechanisms. However, there is growing evidence that mammalian mitochondria can also import cytosolic noncoding RNA via poorly understood processes. Here, we summarize our knowledge of mitochondrial RNA, discuss recent progress in understanding the molecular mechanisms and functional impact of RNA import into mitochondria, and identify rising challenges and opportunities in this rapidly evolving field.

The Effect of Marketing Mix on the Formatoin of Fashion Brand Equity (마케팅 믹스 요소가 의류 브랜드 자산 형성에 미치는 영향)

  • Choi, Sun-Hyung
    • The Research Journal of the Costume Culture
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    • v.13 no.1
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    • pp.174-187
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    • 2005
  • Recently the issue of brand equity has emerged as one of the most critical areas for fashion marketing management. Despite strong interest in the subject, there is little evidence of how brand equity is created by marketing mix elements and what their effects are. This study explores the influences of marketing mix elements on the brand equity of apparel products. Based on a literature review, a conceptual model for the quality, design, price, advertisements, and brand leadership on consumer's view on brand equity through brand identification and brand values was formulated and tested. For comparative purposes, two basic casual brands are tested, one is Polo and the other is Giodano. The subjects were Korean .50 college women living in Seoul and Daejeon. Results showed that brand equity of casual brand is affected by quality, brand leadership, design, price, advertisements. Therefore marketers should develop the core element to position its brand strategy to create competitive advantages.

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A Study on the SCM Partnerships Factors and Business Performance (섬유산업의 SCM 파트너십 요인과 사업성과에 관한 연구)

  • Kim, Chang-Bong;Kwon, Seung-Ha
    • International Commerce and Information Review
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    • v.10 no.3
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    • pp.221-238
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    • 2008
  • This paper examined the supply chain management partnerships factors and business performance in textile industry. To build a global network, we should consider the following critical factors such as lead-time reduction, information sharing, and inventory management. The purpose of this study is to focus on QR (Quick Response) of SCM in textile industries to clarify which of the SCM factors contribute to business performance for the SCM firms. Based on the analysis of eighth-six cases, the following results were found. First, partnerships factors of supply chain management have a positively significant influence on responsiveness of supply chain management. Second, partnerships factors of supply chain management have a positively significant influence on flexibility of supply chain management. This study suggests that partnerships are main factors for the business performance. Especially, our empirical evidence shows that capacity of firms practicing SCM, information techniques, and partnerships make the firms' business performance more responsive and flexible.

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