• 제목/요약/키워드: REM

검색결과 332건 처리시간 0.037초

Arabidopsis thaliana Remorins Interact with SnRK1 and Play a Role in Susceptibility to Beet Curly Top Virus and Beet Severe Curly Top Virus

  • Son, Seungmin;Oh, Chang Jae;An, Chung Sun
    • The Plant Pathology Journal
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    • 제30권3호
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    • pp.269-278
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    • 2014
  • Remorins, a family of plant-specific proteins containing a variable N-terminal region and conserved C-terminal domain, play a role in various biotic and abiotic stresses, including host-microbe interactions. However, their functions remain to be completely elucidated, especially for the Arabidopsis thaliana remorin group 4 (AtREM4). To elucidate the role of remorins in Arabidopsis, we first showed that AtREM4s have typical molecular characteristics of the remorins, such as induction by various types of biotic and abiotic stresses, localization in plasma membrane and homo- and hetero-oligomeric interaction. Next, we showed that their loss-of-function mutants displayed reduced susceptibility to geminiviruses, Beet Curly Top Virus and Beet Severe Curly Top Virus, while overexpressors enhanced susceptibility. Moreover, we found that they interacted with SnRK1, which phosphorylated AtREM4.1, and were degraded by the 26S proteasome pathway. These results suggest that AtREM4s may be involved in the SnRK1-mediated signaling pathway and play a role as positive regulators of the cell cycle during geminivirus infection.

수면의 생리 (Physiology of sleep)

  • 채규영
    • Clinical and Experimental Pediatrics
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    • 제50권8호
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    • pp.711-717
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    • 2007
  • Sleep is a vital, highly organized process regulated by complex systems of neuronal networks and neurotransmitters. Normal sleep comprises non-rapid eye movement (NREM) and REM periods that alternate through the night. Sleep usually begins in NREM and progresses through deeper NREM stages (2, 3, and 4 stages), but newborns enter REM sleep (active sleep) first before NREM (quiet sleep). A period of NREM and REM sleep cycle is approximately 90 minutes, but newborn have a shorter sleep cycle (50 minutes). As children mature, sleep changes as an adult pattern: shorter sleep duration, longer sleep cycles and less daytime sleep. REM sleep is approximately 50% of total sleep in newborn and dramatically decreases over the first 2 years into adulthood (20% to 25%). An initial predominant of slow wave sleep (stage 3 and 4) that peaks in early childhood, drops off abruptly after adolescence by 40% from preteen years, and then declines over the life span. The hypothalamus is recognized as a key area of brain involved in regulation of sleep and wakefulness. The basic function of sleep largely remains elusive, but it is clear that sleep plays an important role in the regulation of CNS and body physiologic processes. Understanding of the architecture of sleep and basic mechanisms that regulate sleep and wake cycle are essential to evaluate normal or abnormal development of sleep pattern changes with age. Reduction or disruption of sleep can have a significant impact on daytime functioning and development, including learning, growth, behavior, and emotional regulation.

Educational Program for Radiation Emergency Medicine at the Hirosaki University Graduate School of Health Sciences: A Training Course for Medical Personnel

  • Saito, Yoko;Nakamura, Toshiya;Urushizaka, Mayumi;Kitajima, Yu;Itaki, Chieko;Terashima, Shingo;Hosokawa, Yoichiro
    • Journal of Radiation Protection and Research
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    • 제41권4호
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    • pp.436-441
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    • 2016
  • Background: Although nuclear disaster is considered rare, its effects are serious, and we must prepare a system to enable an effective response. Materials and Methods: Since 2010, we have been offering a two-day seminar to provide current nurses and radiological technologists with basic knowledge and train them in radiation emergency medicine (REM) techniques. This training offers lectures to deepen each specialty from the perspective of REM, as well as exercises on ways to handle irradiated and/or contaminated patients. Participants were expected to treat patients according to the concept of REM. Results and Discussion: All participants learn to assess and decontaminate contaminated wounds through drills. The questionnaire survey for participants indicated that participants were satisfied with this training and wanted to attend again. Conclusion: We believe that this training course will provide a valuable opportunity for medical professionals to gain knowledge and expertise in REM.

Factors Affecting Real Earning Management: Evidence from Indonesia Stock Exchange

  • SIAHAYA, Septina Louisa;SANDANAFU, Sally Paulina;APONNO, Chrestiana;SADUBBUN, Vury Lilian Angela
    • The Journal of Asian Finance, Economics and Business
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    • 제8권8호
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    • pp.85-91
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    • 2021
  • This research aims to analyze the impact of Financial Risk (FR), Information Asymmetric (IA), and Earning Power (EP) on Real Earning Management (REM) of listed trading companies in IDX Indonesia. This study aims to analyze the influence of FR, IA, EP, on REM through Operating Cash Flow, Production expense, and Discretionary Expense. The study employs an unbalanced panel of data set from 2014 to 2018 on the activity of all trading companies (15 in total) as selected samples of 48 feasible samples from 144 existing data. The sample used a non probability sampling method with a purposive sampling technique. This research was classified as causative and tested by multiple linear regression model with cross-sectional analysis. The result indicated a significant impact of FR on REM through PROD and DISX but not through COF. How ever, IA, and EP showed significant impact on REM by means of COF but not go by PROD and DISX..The findings in this study contribute to the users of financial reports particularly the stakeholders in defining the determinants of real earning management practices among firms when it comes to decision making.

Estimating Indoor Radio Environment Maps with Mobile Robots and Machine Learning

  • Taewoong Hwang;Mario R. Camana Acosta;Carla E. Garcia Moreta;Insoo Koo
    • International journal of advanced smart convergence
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    • 제12권1호
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    • pp.92-100
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    • 2023
  • Wireless communication technology is becoming increasingly prevalent in smart factories, but the rise in the number of wireless devices can lead to interference in the ISM band and obstacles like metal blocks within the factory can weaken communication signals, creating radio shadow areas that impede information exchange. Consequently, accurately determining the radio communication coverage range is crucial. To address this issue, a Radio Environment Map (REM) can be used to provide information about the radio environment in a specific area. In this paper, a technique for estimating an indoor REM usinga mobile robot and machine learning methods is introduced. The mobile robot first collects and processes data, including the Received Signal Strength Indicator (RSSI) and location estimation. This data is then used to implement the REM through machine learning regression algorithms such as Extra Tree Regressor, Random Forest Regressor, and Decision Tree Regressor. Furthermore, the numerical and visual performance of REM for each model can be assessed in terms of R2 and Root Mean Square Error (RMSE).

용융 폴리우레탄의 완화 스펙트럼에 의한 자체확산분포 결정 (Determination of Self Diffusion Distributions of Molten Polyurethanes by Relaxation Spectra)

  • 김남정
    • 대한화학회지
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    • 제50권3호
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    • pp.196-202
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    • 2006
  • 점탄성 용융 폴리우레탄의 자체확산분포가 완화스펙트럼과 자체확산분포 관계식으로부터 얻어졌다. ester, PCL PCL dyed 형의 용융 폴리우레탄의 완화스펙트럼은 실험적인 응력완화 곡선을 Ree-Eyring and Maxwell non-Newtonian model(REM 모델)이론식에 적용시켜서 얻는다. 용융폴리우레탄의 응력완화 실험은 온도조절 장치가 있는 physica 레오메타를 이용하여 여러 온도에서 수행되었다. 이론적인 완화스펙트럼은 REM model로부터 유도한 이론적인 완화스펙트럼식을 프로그램화한 컴퓨터 계산에서 구하였다. 폴리우레탄 시료의 자체확산과 비결정 영역의 홀거리가 응력완화 실험에 의해서 연구 조사되었다. 비결정 영역에서의 유동단위의 확산을 연구하기 위해서 확산계수와 홀부피가 유변학적인 파라메타와 결정크기로부터 계산되었다. 폴리우레탄 시료의 완화스펙트럼과 자체확산은 유동 단위의 분자량분포, 점도, 홀부피, 활성화에너지와 밀접한 관계가 있는 것을 알 수 있다.

현대 실내건축공간에 나타난 플랫폼적 특성 - 렘 콜하스의 실내공간 프로젝트를 중심으로 - (The Platform Feature Appearing in Contemporary Architectural Interior Space - Focused on the Interior Design Projects of Rem Koolhaas -)

  • 김석영
    • 한국실내디자인학회논문집
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    • 제24권2호
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    • pp.58-66
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    • 2015
  • This study was conducted to determine a 'platform' as a mean of interactions between users in contemporary spatial design and network(web) and to verify the similarity between the platform and space of Rem Koolhaas, one of the leading contemporary architects of our time. A platform, referring to tangible or intangible structures designed for common use in a variety of ways, is activated by the networking effect of participants. Aided by the recent development of the IT industry encompassing computers and smart phones, the concept of platforms is extending to all areas of modern life, in general. In this study, the similarity between architectural space and platforms after reviewing the computer-related platforms, ecological features that refer to virtuous circulation, and various cases applied with platform thinking. Through this process, the platform feature of architectural platforms is defined as the 'open spatial system combined with control and freedom that acts more than one function and facilitates direct/indirect exchanges between users regardless of its type or size'. Establishing the criteria for spatial analysis based on this definition, analysis was conducted on interior design projects that were planned and conducted by Rem Koolhaas after 2000. As a result of this analysis, it was learned that Rem Koolhaas designs space using dual space structures where the extension and mixture of the user group, mixture of various functions defined by users, loose control that induces voluntary participation, community reinforcement, and inducement of accidental events, and opening and closing coexist. In addition, this design approach was found to be a design strategy similar to the concept of platforms that began to be developed in the IT field.

렘 콜하스와 SANAA의 건축공간 특성분석을 통한 공간의 관계성에 관한 연구 (A Study on the Relationship between Rem Kolhaas and SANAA through the Analysis of Architectural Space Characteristics)

  • 김석영
    • 한국콘텐츠학회논문지
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    • 제21권6호
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    • pp.113-127
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    • 2021
  • 본 연구는 탈근대의 건축 공간을 고정되지 않고 지속적인 변화의 개념으로 보고, 변화하는 관계 네트워크로 건축 내 공간 요소를 이해하는 것을 목표로 한다. 연구의 목적은 관계성이라는 관점에서 렘 콜하스와 SANAA의 작품에 나타난 공간적 특성을 밝힘과 동시에 두 건축가의 공간구성 전략을 분석하는 것이다. 연구의 방법은 관계성의 대한 이론적 고찰을 통해 비고정적 관계성의 의미를 정의한 후 렘 콜하스와 SANAA의 건축적 접근방법에 대해 살펴보았다. 관계성을 공간의 프로그램, 환경, 사용자 그리고 가구와 집기로 구분하여 두 건축가의 작품 분석하였다. 결과적으로 두 건축가 모두 조직화에 의해 경직된 프로그램을 거부하고 가능성이 내재된 관계성을 건축공간 활성화 목적으로 활용하고 있다는 점에서는 유사하지만, 렘 콜하스는 사용자의 행위유발 기제의 전략을 사용하고 있는 반면, SANAA는 사용자의 자율적 행위를 담는 이완공간의 전략을 사용하고 있음을 확인할 수 있었다.

렘 콜하스 건축 디자인에서 과학주의의 표현에 관한 연구 (A Study on the Expression of Scientism in Architectural Design of Rem Koolhaas)

  • 김원갑
    • 한국실내디자인학회논문집
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    • 제13권2호
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    • pp.80-90
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    • 2004
  • Scientism is a kind of paradigm since the birth of Modernism. Architectural design was also effected from scientism in the 1st Machine age, and being effected still In the End Machine age. But many architects in the 2nd Machine age express scientism in architectural design as a "science for kick" as SF. The design of Rem Koolhaas follows the line of Modernism which was effected from scientism in many ways. However he shows modified machine aesthetics as SF pataphysics mixed with literary imagination, and now shows new science paradigm in post-modern age. He expresses many new science theory like indeterminacy theory, chaos, catastrophe theory in his works. And those are expressed as indeterminate program that proceeds in non-linear way, rhizome in space, order out of chaos, topological metamorphosis as a catastrophe. This study analyzes the expression of scientism in architectural design of Rem Koolhaas since 1970s.nce 1970s.

들뢰즈 회화론의 공간인식에 의한 렘 쿨하스 건축의 실내공간에 관한연구 (A Study on Interior Space in Rem Koolhaas' Architectures through Space Recognition of Deleuze's Painting Theory)

  • 홍선미;김문덕
    • 한국실내디자인학회:학술대회논문집
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    • 한국실내디자인학회 2006년도 추계학술발표대회 논문집
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    • pp.115-120
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    • 2006
  • This study concentrates on a new idea that is formulated as a creative space recognition in contemporary architecture and painting. It is stimulated from Deleuze's philosophy, which is expressed with the philosophical instrument, "Non-Representation". After discussing the concept of non-representation used in Deleuze's philosophy, case example in contemporary architecture are analysed to comparatively Investigate the relationship between the architectures by Rem Koolhaas and painting by Francis Bacon. Therefore, he founds expressions of "diagram" and "movement" in painting of F. Bacon. Diagram meansit is a power that is comprised of various points of wiew with the kind experiences that one has in life. Movement that were extracted form the Instrument in space recognition of Deleuze's panting theory were of topology, insertion of geometry, reiteration of layers, transparency and translucency, reflection effect.

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