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      • KCI등재

        노만 포스터의 친환경 건축계획 기법에 관한 연구

        임수현,박현수 대한건축학회 2011 대한건축학회논문집 Vol. No.

        The purpose of this study is to study design methods of Norman Foster, focusing on his efforts for the passive architecture of accomplishing effective energy usage and energy load reduction, In order to study the sustainable design method of Norman Foster, his previous works were studied to find his attempts to consider ecology in his design. Also, characteristics of Norman Foster architecture and his sustainable design methods were searched through case studies. In Norman Foster's design method for sustainable architecture, the building shape was designed on the basis of analysis of surrounding environment in initial design stage, reducing energy load effectively. Also, the skin system of building was devised properly to reduce energy load for heating and cooling. In his design, the atrium and inner garden were mainly used to bring natural daylight and ventilation inside building, maintaining fresh air condition. The sustainable design elements of Norman Foster reflect on his architectural philosophy that architecture is symbiosis with nature as an organism depending on environment and local condition. In order to build sustainable architecture, more study is needed on passive design method for reducing energy consumption as well as active solution using high technology.

      • KCI등재

        유채의 출아 검정을 통한 제설제의 작물 영향 평가

        임수현,유혜진,이찬영,공유석,이병덕,김도순 한국작물학회 2021 한국작물학회지 Vol.66 No.1

        The increasing use of deicing salts has caused various environmental problems, including crop damage along the motorway where deicing salts are sprayed during winter. Deicing salts used on roads have been reported to negatively affect crops, but little information is known about their impact on crops. A seedling emergence assay was conducted to evaluate the effects of deicing salts on crops using oilseed rape (Brassica napus) as a model plant. We tested five chloride deicing salts consisting of NaCl, CaCl2, or MgCl2 and 1 non-chloride deicing salt (SM-3) at a range of concentrations (25, 50, 100, 200, and 400 mM), and untreated control. Regardless of deicing salts, they significantly delayed and reduced seedling emergence of oilseed rape with increasing salt concentration. Non-linear regression analysis of seedling emergence with a range of salt concentrations by fitting to the log-logistic model revealed that the chloride deicing salts reduced seedling emergence more than the non-chloride deicing salt SM-3. The GR50 value, the concentration causing 50% seedling emergence, of SM-3 was 47.1 mM, while those of the chloride deicing salts ranged from 30.7 mM (PC-10) to 37.5 mM (ES-1), showing approximately 10 mM difference between non-chloride and chloride deicing salts. Our findings suggest that seedling emergence assay is a useful tool to estimate the potential damage caused by deicing salts on crops. 겨울철 제설제 사용이 증가함에 따라 제설제가 사용된고속도로변의 농작물에 대한 피해사례가 증가하고 있다. 국내 다양한 제설제가 제설목적으로 사용되고 있지만 작물에 미치는 영향에 대한 연구는 제한적이다. 따라서 본 연구는 국내에서 사용되는 6종의 제설제가 유채의 출아에 미치는 영향을 비교하여 작물에 미치는 제설제의 영향을 비교평가하고자 수행되었다. NaCl, CaCl2 또는 MgCl2으로 구성된 5개의 염화물계 제설제와 1개의 비염화물계 제설제(SM-3)를 유채 파종 직후 6 처리농도(0. 25, 50, 100, 200, 400 mM)로 처리한 후 출아개체수를 조사하였다. 유채의출아는 제설제 종류에 관계없이 제설제 농도가 증가함에따라 현저히 감소하였는데 비염화물계 보다 염화물계 제설제 처리구에서 높은 출아억제가 확인되었다. 제설제 농도에 따른 출아율을 log-logistic 모델에 적용하여 비선형회귀분석을 실시한 결과 50% 출아를 억제하는 농도인 GR50 값이 비염화물계인 SM-3는 47.1 mM이고, 염화물계 제설제는 30.7 mM (PC-10)에서 37.5 mM (ES-1)로 비염화물계제설제와 염화물계 제설제간 9.6 mM ~ 16.4 mM의 차이를보였으나 염화물계 제설제간 차이는 크지 않음을 확인하였다. 본 연구의 결과는 유채의 출아 특성 평가가 작물에 대한 제설제의 잠재적 피해를 예측할 수 있는 유용한 평가방법임을 시사한다.

      • KCI등재

        고소설의 정보 단위 연구 : 「 금방울전 」 을 대상으로

        임수현 한국고소설학회 1999 古小說 硏究 Vol.7 No.1

        This study starts out of interest in the way of classifying and accumulating the information acquired in the course of a readers reading narrative discourse. To put it more concretely, this treatise has the purpose of finding out the formal frame which classifies implied information in the narrative discourse and seeing the effect to the reader's cognitive process by the classified information context. The reader merges into a character when he reads the narrative discourse which consist of linerized signals. That is why the cognitive operation which makes the information context three-dimensional. The reading is the reader's information process procedure. The shared information classifying standard makes it possible among participants in the narrative discourse. The change standard of information context is marked by the adverb, 'Cha-si', 'Su˘n-si' in the classical novel. These marks contain the change of 'space', 'character' and 'time' when they are considered though they are taken as time mark. When the narrative discourse stops one information and suggest another information, the marked play role to visualize whether the information will be changed or not. There can be found regular rule dominating entrance of marks, if they are looked into closely in the narrative discourse. The rule of change of information context in the narrative discourse follows two kind of standard. First, 'space' and 'character' which the narrative discourse points out are changed into other space and character at once 'simultaneously'. Second, 'the time' of narrative proceeding in the narrative discourse is reset, either forward or backward. Like this, that is 'referential break', the continuity of one information breaks and other information furnishes. The referential break decides information unit. The practical analysis on information unit and the function of information unit deals with Kum-Bang-Wool-Jeon, the version of 28 chapter owed by the Great British Museum. At first, movement of events in Kum-Bang-Wool-Jeon are arranged in due order and causal relation among them are treated. Some event in Kum-Bang-Wool-Jeon are not figured out immediately, delayed with involving other event, and solved later. The longest delayed event is forming a relationship between main-character. Kum-Bang-Wool-Jeon text proceeds for main-character making a connection and maintains suspense with delayed conclusion having many complex events. There are new embedded event in the delayed outcome of old event. Delayed information strategy which makes a reader interested depends on referential break. The narrative discourse tries to delay the conclusion as long as possible to consolidate the existence of narrative itself ironically, moving for main-character action target. Because as soon as the main-character's ultimate action target is completed, there is no reason the narrative discourse exists. This treatise tried to find out the way the reader feels the meaning and suspend, when he picks up and synthesizes the information that makes it possible to judge Kum-Bang-Wool-Jeon suspense aspect. One can explain how the reader catches the information supplied by the narrative discourse and feels the suspense by analyzing cognitive structure. So the significance of this study is an attempt to analyse the cognitive structure of narrative discourse systematically through the frame and effect that discourse organization controls information context automatically.

      • KCI등재후보
      • KCI등재

        탄소섬유 사이징에 따른 에폭시 수지 유동 특성에 관한 연구

        임수현,온승윤,김성수 한국복합재료학회 2018 Composites research Vol.31 No.6

        This paper aims to study flow characteristics of epoxy resin w.r.t. the sizing agents treated on the carbon fibers which have the same surface morphologies before sizing treatment. Dynamic contact angle (DCA) was measured to evaluate wettability of a single carbon fiber. Wicking test and Vacuum Assisted Resin Transfer Molding (VARTM) were performed to find relation between DCA measurement results and impregnation characteristics. In addition, surface properties of the carbon fibers such as surface free energy and chemical compositions were measured and interfacial shear strength (IFSS) between the carbon fiber and the resin were experimentally characterized by using micro-droplet tests. According to these experimental results, the sizing agent for carbon fibers should have appropriate level of surface free energy and good chemical compatibility with the resin to reconcile resin flow characteristics and interfacial strength. 본 연구에서는 동일한 표면 형태를 가지는 탄소섬유에 다양한 사이징제를 처리함에 따라 발생하는 에폭시 수지의 유동 특성 변화를 분석하였다. 동적 접촉각(DCA) 측정을 통해 단일 탄소섬유의 젖음성(Wettability)을측정하였다. DCA 측정 결과와 함침 특성 간의 연관성을 살피기 위해 Wicking test와 VARTM test를 수행하였다. 추가적으로, 탄소섬유의 표면 에너지 등 다양한 표면 특성을 분석하였으며 Micro-droplet test를 통해 수지와 탄소섬유계면의 계면전단강도를 측정하였다. 이러한 실험 결과를 기반으로, 함침 속도의 증대를 위해서는 탄소섬유의 사이징제가 적정 수준의 표면 에너지를 가져야 하며, 사이징제의 화학적 조성을 조정하여 에폭시 수지의 유동 특성과 계면전단강도가 모두 개선 가능함을 확인하였다.

      • KCI등재

        Analysis of an Acoustic Fountain Generated by Using an Ultrasonic Plane Wave for Dierent Water Depths

        임수현,김무준,김정순 한국물리학회 2019 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.74 No.4

        The control of ultrasonic atomization is important in its various application elds. Even though the acoustic fountain's shape is directly related to the quantity of atomized droplets, theoretical analysis of the shape has not been sucient. In this study, a theoretical analysis model for an- alyzing the fountain shape caused by ultrasound is suggested. The fountain shape was examined theoretically and experimentally for various input acoustic powers, radiation areas of the ultra- sonic transducer, and depths of the liquid. The results showed that the maximum height of the fountain for ultrasonic atomization occurred for a depth of 7 cm when the 1.5 cm diameter ultra- sonic transducer was driven by 2-MHz continuous wave in water. We conrmed that the suggested model provided the optimum liquid depth considering the eects of attenuation with increasing propagating distance of the ultrasound.

      • KCI등재

        경기·강원지역에서 ALS 저해 제초제 저항성 논 잡초의 분포

        임수현,육민정,박연호,유혜진,김진원,이정란,김도순 한국잔디학회 2018 Weed & Turfgrass Science Vol.7 No.4

        This study was conducted to investigate the geographic distribution of acetolactate synthase (ALS) inhibitor resistant paddy weeds in Gyeonggi and Gangwon provinces in Korea. Soils were collected from 397 field sites and then tested using soil assay method with treatment of imazosulfuron (75 g a.i. ha-1)+ pyriminobac-methyl (30 g a.i. ha-1). The proportion of sites confirmed with ALS inhibitor herbicide resistant (HR) weeds after soil assay was 77.3% and 75.3% in Gyeonggi and Gangwon provinces, respectively. Area of paddy fields infested with HR weeds was thus estimated 74,081 ha and 21,930 ha, respectively. In both provinces, the most dominant HR weed was Monochoria vaginalis (56.0%), followed by Echinochloa oryzicola (33.2%) and Shenoplectus juncoides (21.1%). In particular, HR Echinochloa species ( E. oryzicola and E. crus-galli ) were estimated to infest 42% of paddy fields in Gyeonggi and Gangwon provinces, suggesting that urgent countermeasure is required to tackle increasing HR Echinochloa species. Geographical information for HR weeds in Gyeonggi and Gangwon provinces will be useful to establish site-specific HR management strategy and countermeasure. 본 연구는 2017년 경기·강원지역 397개소에서 수집한 논 토양에 대한 acetolactate synthase (ALS) 저해제 토양검정법을 통 해 ALS저해 제초제 저항성 잡초의 발생 및 지리적 분포를 평가하기 위하여 수행되었다. ALS 저해제 저항성 잡초 발생률 은 경기도 77.3% 강원도 75.3%이었으며, 이를 기반으로 추정한 저항성 논잡초 발생면적은 경기도 74,081 ha 강원도는 21,930 ha로 전체 논 면적의 각각 82%와 74%에서 저항성 잡초가 발생할 것으로 예측되었다. ALS 저해제 저항성 논잡초 의 초종별 분포에 있어 경기도는 물달개비(58.5%)>강피(31.9%)>올챙이고랭이(21.1%)>물피(10.0%)>미국외풀(9.1%)>알 방동사니(4.2%), 강원도는 물달개비(48.6%)>강피(37.3%)>올챙이고랭이(20.9%)>미국외풀(7.1%)>물피(4.8%)>알방동사 니(4.4%) 순으로 저항성 발생률이 높았다. ALS 저해제 저항성 물달개비, 강피, 올챙이고랭이는 경기·강원지역 전역에서 폭넓게 분포하고 있으며, 특히 벼 재배에 있어 가장 문제가 되는 피(강피와 물피)가 경기·강원지역 42% 논에 분포하고 있 다는 것은 저항성 피 방제를 위한 시급한 대책마련이 필요함을 시사한다. 경기·강원지역의 제초제 저항성 논 잡초의 지 리적 분포 정보는 지역별 제초제 저항성 잡초 방제 전략수립 및 대책마련에 효과적으로 활용될 것으로 기대된다.

      • KCI등재

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