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김병열(Byung-Yul Kim),한영준(Young-Joon Han),한헌수(Hern-Soo Hahn) 한국컴퓨터정보학회 2010 韓國컴퓨터情報學會論文誌 Vol.15 No.4
본 논문에서는 기존의 광학식 모션 캡처에서 생길 수 있는 마커들 간의 간섭이나 복잡한 시스템 구성으로 인한 시스템 설치의 복잡성 문제들을 해결하기 위해, 2차원 위치정보를 제공하는 단일 카메라와 특정부위의 방향정보를 제공하는 가속도센서와 자이로 센서로 구성된 동작센서를 융합하여 간편한 모션 캡처를 실현하는 새로운 기법을 제안한다. 본 논문의 동작 인식은 크게 영상기반 위치 정보와 동작센서기반 방향 정보의 융합을 통해 이루어진다. 영상은 보이는 부위에 장착된 컬러마커의 위치를 기준점으로 제공하고, 동작센서들은 각 패지의 이동방향과 속도를 측정하여 영상에서 제공하는 마커들의 3차원 포즈정보를 알아 낼 수 있다. 제안하는 시스템은 사람동작의 측정에 필요한 최소한의 센서정보를 사용함으로써 시스템의 구성과 센서의 설치가 매우 간단하며 경제적이라는 장점을 갖는다. 이러한 장점은 다양한 실험을 통해 검증하였다. At the aim of solving the problems appearing in traditional optical motion capturing systems such as the interference among multiple patches and the complexity of sensor and patch allocations, this paper proposes a new motion capturing system which is composed of a single camera and multiple motion sensors. A motion sensor is consisted of an acceleration sensor and a gyro sensor to detect the motion of a patched body and the orientation (roll, pitch, and yaw) of the motion, respectively. Although Image information provides the positions of the patches in 2D, the orientation information of the patch motions acquired by the motion sensors can generate 3D pose of the patches using simple equations. Since the proposed system uses the minimum number of sensors to detect the relative pose of a patch, it is easy to install on a moving body and can be economically used for various applications. The performance and the advantages of the proposed system have been proved by the experiments.
Removal of contaminants of emerging concern by metal-organic framework nanoadsorbents: A review
Joseph, Lesley,Jun, Byung-Moon,Jang, Min,Park, Chang Min,Muñ,oz-Senmache, Juan C.,Herná,ndez-Maldonado, Arturo J.,Heyden, Andreas,Yu, Miao,Yoon, Yeomin Elsevier 2019 CHEMICAL ENGINEERING JOURNAL -LAUSANNE- Vol.369 No.-
<P><B>Abstract</B></P> <P>Over the last two decades, various contaminants of emerging concern (CECs), such as endocrine disrupting compounds, along with pharmaceuticals and personal care products (PPCPs), have been of interest to the water industry because of their incomplete removal during the typical water and wastewater treatment processes. Recently, the potential environmental applications of metal-organic frameworks (MOFs) and MOF-based nanoadsorbents (MOF-NAs) have been widely studied. In particular, the use of these nanoadsorbents for CECs in water and wastewater treatment processes has been a rapidly growing area of interest in the recent literature due to their unique physicochemical properties. Therefore, it is necessary to understand the adsorption phenomena of various CECs by MOF-NAs, particularly because the physicochemical properties of various CECs create unique challenges for the removal of these compounds from water. In addition, the adsorption of CECs on MOF-NAs is significantly influenced by the physicochemical properties of the MOF-NAs and the water quality conditions. Therefore, this review provides a comprehensive assessment of recent studies on the removal of various CECs (<I>e.g</I>., analgesics, antibiotics, antiepileptics, antiseptics, and etc.) with different physicochemical properties by various MOF-NAs under various water quality conditions (<I>e.g</I>., pH, background ions/ionic strength, natural organic matter, and temperature). In addition, this review briefly discusses the recent literature on the synthesis of MOF-NAs, regeneration of MOF-NAs, and removal of CECs during water and wastewater treatment processes.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Removal of contaminants of emerging concern by MOF nanoadsorbents was comprehensively reviewed. </LI> <LI> Comprehensively information was provided for applications of MOF nanoadsorbents in water industry. </LI> <LI> Areas of future research for the removal of various contaminants in MOF nanoadsorbents were suggested. </LI> </UL> </P>
이종윤,황병호,조헌정 한국목재공학회 1995 목재공학 Vol.23 No.1
This study was carried out to investigate the characterization of lignins from waste liquors in SP, KP, ASAM, and AS from Pinus densiflora, Quercus mongolic, and Betula ermanii. Spectroscopic study was applied to examine the lignins separated from different pulping process. Lignin contents in waste liqours increased in order of AS, ASAM, KP, and SP. UV spectra of three types of lignin except AS lignin showed similar pattern. IR spectra of AS, lignin showed strong C=O absorptions in the range from 1730 to 1750㎝^(-1), where as those KP, SP, and ASAM showed weak stretch in this region. NMR spectra of AS lignin showed strong characteristic chemical shifts of acetoxyl groups of acetylated aliphatic and aromatic hydroxyl groups at 2.0∼2.5 ppm. Molecular weight of ASAM lignin from Pinus densiflora determined and found number average molecular weight 1.199, weight average molecular weight 5.458, z average molecular weight 17.242, and viscosity average molecular weight, 5.457. It is considered from the results based on spectroscopic study of lignin that waste liquors (in SP, KP, ASAM, and AS) from Pinus densiflora, Quercus mongolica, and Betula ermanii can be used for lignin utilization.
양재경,이종윤,황병호,조헌정 한국목재공학회 1994 목재공학 Vol.22 No.2
This study was performed to study utilization of separated carbohydrates as well as separation, following analysis of the major components and separation of the carbohydrates in waste liquors of SP, KP, ASAM and AS. The result can be summerized as follows; Inorganic contents in waste liquors increase in this order AS$lt;KP$lt;ASAM $lt;SP. And lignin contents increased in this order : AS$lt;ASAM$lt;KP$lt;SP. Carbohydrate content in the waste liquor shows that AS waste liquor was the highest and SP waste liquor the lowest and those are assumed that the most carbohydrates are modified. Carbohydrate analysis shows that glucose content on the Quercus mongolica was much higher than other wood species. Separation of carbohydrates and lignins is very effective in AS waste liquor. SP waste liguor can be used as a medium additive for mushroom cultivation considering its powerful effect. In the AS waste liquor, waste cooking agent was suitable to recover by the distillation. And wood components was separated by simple treatment. It is possible to produce alditol because of plentiful carbohydrate amount on the waste liquor.
남동호(Nam, Dong Ho),하헌중(Ha, Hern Joong),김병식(Kim, Byung Sik) 한국방재학회 2020 한국방재학회논문집 Vol.20 No.1
Due toclimate change, the average temperature of the Earth continues to increase, while abnormal climate patterns (such as El Niño and La Niña) occur frequently, causing numerous instances of flooding and drought damages. Thus, sophisticated analyses of rainfall-runoff phenomena are needed to reduce the damage caused by these weather disasters. Furthermore, analyzing the impact of extreme rainfall events occurring in a short period of time is essential for flood management. In this study, the Nakdong River, located in Yangsan, Gyeongsangnam-do, which is prone to localized heavy rainfall and flash floods, was selected as the target basin to conduct flood-runoff simulation. We used distributed runoff models such as spatial runoff assessment tool (S-RAT) and Vflo™ for this simulation, and compared and analyzed their results. Furthermore, using the same events, the validity and applicability of the S-RAT model has been verified through calibration. The errors of both models were calculated using statistical analysis to examine the domestic basin applicability of the S-RAT model. 전 세계적으로 기후변화로 인하여 지구의 평균기온이 상승하고 엘리뇨, 라니냐와 같은 이상기후가 빈번하게 발생하며 이로인한 홍수나 가뭄 등의 피해 또한 잦아지고 있다. 이러한 기상재해에 따른 피해를 줄이기 위해 강우-유출 현상에 관한 정교한해석이 필요하며, 단기간에 발생되는 호우사상에 대한 유출해석은 홍수관리 측면에서 중요한 역할을 한다. 본 논문에서는국지성 집중호우 및 돌발홍수가 잦은 낙동강수계인 경상남도 양산에 위치한 양산천을 대상유역으로 선정하여 홍수유출모의를실시하였다. 홍수유출모의에는 분포형모형인 S-RAT모형과 Vflo™모형을 사용하였다. 또한 S-RAT모형의 검증을 위해 동일한사상을 이용하여 보정 및 검증을 하였으며, 통계학적 분석을 통하여 두 모형의 오차를 계산하여 S-RAT모형의 적용성을 검토하였다.
민경남(Kyoung-Nam Min),유병옥(Byung-Ok You),홍정표(Jung-Pyo Hong),전종헌(Jong-Hern Jun),이태선(Tae-Sun Lee) 한국암반공학회 2006 터널과지하공간 Vol.16 No.2
연구지역은 고속도로 신설구간에 형성된 대절토 무한사면으로 불연속면을 따라 사면파괴활동이 시작되었다. 보강은 락앵커 공법을 시공하여 상부구간 안정화를 시도하였다. 그러나 앵커보강 하부구간에 대규모 붕괴가 추가 발생하였고 이후 2차례 더 진행되었다. 붕괴원인을 분석하기 위하여 시료를 채취하고 직접전단시험을 실시하여 잔류전단강도를 확인하였다. 그리고 붕괴지반의 앵커력 확보를 획인하기 위하여 앵커인발시험을 실시하고 앵커설계에 반영하였다, 앵커는 붕괴면의 굴곡이 심하고 연경의 변화가 심한 지빈상태를 고려하여 계단식 옹벽과 조합하여 앵커력을 확보하도록 하였다. The target slope of this study, formed during the construction of highway, is the very high infinite slope where sliding began along the discontinuity. Although an attempt was made to stabilize the upper part of the slope by installing the rock anchors, large scale failure was occurred at the lower part if the reinforced area. Afterwards, subsequent failures were observed two times. To investigate the cause of the failure, residual shear strength was measured by performing the direct shear test of rock specimen of the site. The anchor design was based on the pull-out test. Considering the slope surface where the undulation was severe and the variation of strength was very large, buttressing was used to obtain the required anchoring capacity.