http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Appingpot: 하둡 및 스파크를 활용한 어플리케이션 큐레이션 플랫폼
전상우 ( Sangwoo Jeon ),심의석 ( Euiseok Shim ),지정희 ( Jeonghee ) 한국정보처리학회 2016 한국정보처리학회 학술대회논문집 Vol.23 No.2
현재 해외뿐만 아니라 국내에서도 큐레이션 서비스가 활발히 운영중이다. 폭발적으로 증가한 어플리케이션 마켓 시장에서 사용자들은 자신에게 맞는 엡을 찾고 설치하기 어려워지고 있다. 이에 대응하여 본 논문에서는 어플리케이션 큐레이션 서비스인 Appingpot 시스템을 제안한다. Appingpot 에서는 사용자들로부터 수집된 앱 로그데이터와 Facebook 친구 정보를 기반으로 Hadoop 과 Spark 를 통해 사용자들에게 적합한 앱을 추천하는 서비스를 제공한다.
( Sangwoo Shim ),( Sang Beom Hong ),( Jin Jeon ),( Chae Man Lim ),( Younsuck Koh ) 대한결핵 및 호흡기학회 2013 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.116 No.-
To evaluate the factors which contribute failed airway (FA) by rapid response team (RRT) in general ward.The emergency airway management data of consecutive 324 patients were reviewed in Asan Medical Center, Seoul, Korea.We included the patients intubated by our RRT in general wards. The patients were classified as difficult airway (DA) group and non-DA group. Among 324 patients, 78 (24.1%) patients were included in DA group, and 246 (75.9%) were in non-DA group.FA occurred in 20 (25.6%) patients in DA group, 35 (14.2%) in non-DA group. The contributing factors to FA in DA group were the low grade of 1st attempted physician (odds ratio [OR] 0.206,95% confidence interval [CI]=0.062-0.679), the large attempted number (OR 14.457, 95% CI=4.209-49.652) and the high Cormack-Lehane score (OR 1.793, 95% CI=1.051-3.058). The low grade of 1st attempted physician (OR 0.388, 95% CI=0.186-0.810), the rigid laryngoscope than video laryngoscope as 1st attempted device (OR 0.244, 95% CI=0.097-0.611),the large attempted number (OR 56.503, 95% CI=15.070-211.850), Jaw relaxation score (OR 1.814, 95% CI=1.018-3.233), Cormack-Lehane score (OR 1.957, 95% CI=1.099-3.487), the medication for induction (OR 2.614, 95% CI=1.037-6.585) and paralysis (OR 2.681, 95% CI=1.081-6.651) contributed to FA in non-DA group. In multivariate analysis, the low grade of 1st attempted physician and the large attempted number were independent risk factors for FA in DA group. The paralysis and the large attempted number were independently related to FA in non-DA group. The experienced, rapid sequence intubation by RRT could be key factor for successful intubation.To evaluate the factors which contribute failed airway (FA) by rapid response team (RRT) in general ward.The emergency airway management data of consecutive 324 patients were reviewed in Asan Medical Center, Seoul, Korea.We included the patients intubated by our RRT in general wards. The patients were classified as difficult airway (DA) group and non-DA group. Among 324 patients, 78 (24.1%) patients were included in DA group, and 246 (75.9%) were in non-DA group.FA occurred in 20 (25.6%) patients in DA group, 35 (14.2%) in non-DA group. The contributing factors to FA in DA group were the low grade of 1st attempted physician (odds ratio [OR] 0.206,95% confidence interval [CI]=0.062-0.679), the large attempted number (OR 14.457, 95% CI=4.209-49.652) and the high Cormack-Lehane score (OR 1.793, 95% CI=1.051-3.058). The low grade of 1st attempted physician (OR 0.388, 95% CI=0.186-0.810), the rigid laryngoscope than video laryngoscope as 1st attempted device (OR 0.244, 95% CI=0.097-0.611),the large attempted number (OR 56.503, 95% CI=15.070-211.850), Jaw relaxation score (OR 1.814, 95% CI=1.018-3.233), Cormack-Lehane score (OR 1.957, 95% CI=1.099-3.487), the medication for induction (OR 2.614, 95% CI=1.037-6.585) and paralysis (OR 2.681, 95% CI=1.081-6.651) contributed to FA in non-DA group. In multivariate analysis, the low grade of 1st attempted physician and the large attempted number were independent risk factors for FA in DA group. The paralysis and the large attempted number were independently related to FA in non-DA group. The experienced, rapid sequence intubation by RRT could be key factor for successful intubation.
A Fully-Integrated 40–222 GHz InP HBT Distributed Amplifier
Sangwoo Yoon,Lee, Iljin,Urteaga, Miguel,Kim, Moonil,Sanggeun Jeon IEEE 2014 IEEE microwave and wireless components letters Vol.24 No.7
<P>This letter presents an ultra-wideband distributed amplifier (DA) implemented in a 250 nm InP HBT technology. Four cascode gain cells are distributed along the input and output microstrip lines to achieve wideband operation. Each cascode cell employs inductive peaking at the output to further enhance the bandwidth and to align the phase delay between the input and output lines. All dc bias components are fully integrated on-chip. The DA exhibits a measured gain of 10 dB with a 3 dB bandwidth extending from 40 to 222 GHz. The maximum output power was measured to be 6.0, 9.2, and 8.5 dBm at 60, 77, and 134 GHz, respectively, which allows the DA to also be used as a medium-power amplifier. To the authors' best knowledge, the DA achieves the highest 3 dB bandwidth of 182 GHz reported thus far, while showing low dc power consumption (105 mW) compared to other state-of-the-art DAs.</P>
Sangwoo Kim,방재훈,최명식,Wansik Oum,Ali Mirzaei,Namgue Lee,Hyouk‑Chon Kwon,Dohyung Lee,Hyeongtag Jeon,Sang Sub Kim,Hyoun Woo Kim 대한금속·재료학회 2019 METALS AND MATERIALS International Vol.25 No.3
We report the gas-sensing properties of pristine and SnS2functionalized TeO2nanowires (NWs). TeO2NWs were synthesizedby a vapor–liquid–solid growth method, and SnS2functionalization was performed using an atomic layer depositiontechnique followed by thermal treatment. Structural and morphological analyses verified the formation of pristine and SnS2functionalized TeO2NWs with desired composition, phase, and morphology. Interestingly, sensing results showed that thepristine TeO2NW gas sensor had better sensing properties relative to the SnS2functionalized TeO2NW gas sensor. Anunderlying sensing mechanism is explained in detail, and reasons for the decrease of sensing performance with the SnS2functionalized TeO2NW sensor was attributed to the coverage of TeO2surface by the SnS2nanoparticles.
Characterization of the copper iodide hole-selective contact for silicon solar cell application
Jeon, Kiseok,Jee, Hongsub,Park, Min Joon,Lim, Sangwoo,Jeong, Chaehwan Elsevier 2018 THIN SOLID FILMS - Vol.660 No.-
<P><B>Abstract</B></P> <P>Hole-selective contacts have been extensively studied in recent years due to their low-cost by low temperature processing (<250 °C). The γ-copper (I) iodide (CuI) behaves as a p-type semiconductor with a zinc blende structure (cubic) and it has previously been studied as a hole-selective layer in organic solar cells, solid-state dye-sensitized solar cells. In this paper, CuI thin films with wide band gaps and large work functions were fabricated on n-type silicon substrates via a thermal evaporation technique. Changes to the structural, morphological and optical properties of CuI thin films based on different thicknesses (11 to 58 nm) were analyzed. X-ray diffraction patterns reveal that poly crystalline CuI thin films a have γ-phase with preferential growth in the (111) direction. Increases in the peak intensity for the (111) diffraction plane were observed in the thicker films. Generally, deposited CuI films exhibit triangular shapes with azimuthal orientation but these shapes disappeared as the film thickness was increased. Excellent electrical and optical properties were obtained at a CuI film thickness of 11 nm; measured values were 642 mV implied voltage, ~3.00 eV band gap energy, 5.68 eV work function value and 97.5% transmittance.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Copper iodide film is proposed as hole selective contact for solar cell application. </LI> <LI> γ-Phase copper iodide films are thermally evaporated. </LI> <LI> The work function value of copper iodide films is ~5.6 eV on average. </LI> <LI> The implied V<SUB>oc</SUB> decreases as copper iodide film thickness increases. </LI> </UL> </P>
Surface modification of RNA nanoparticles by ionic interaction for efficient cellular uptake
Jeon, Hyunsu,Han, Sangwoo,Kim, Hyejin,Lee, Jong Bum THE KOREAN SOCIETY OF INDUSTRIAL AND ENGINEERING 2019 JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY -S Vol.70 No.-
<P><B>Abstract</B></P> <P>Small interference RNA (siRNA) delivery has gained much attention for specific regulation of target protein via RNA interference. However, it has been challenged by inherent instability of naked RNA. To address this issue, a variety of siRNA delivery methods have been developed. The synthesis of RNA nanoparticles (RNPs) by complementary rolling circle transcription (cRCT) has been introduced as a novel route for siRNA delivery, because of the enhanced stability in serum condition and the suitable size for enhanced permeation and retention (EPR) effect. However, RNPs are negatively charged due to the innate structure of RNA, resulting in an inefficient cellular uptake without using transfection agents. In this paper, we report a simple surface modification method of RNP with calcium ion. Calcium-layered RNA nanoparticles (CaRNPs) were generated and used to demonstrate enhanced efficiency of siRNA delivery to HeLa cells <I>in vitro</I>. The results revealed that this simple approach could enhance the cellular uptake efficiency of RNPs in contrast to the naked RNP. Moreover, this method is also applicable for other types of RNAs such as messenger RNA (mRNA), microRNA (miRNA), or single guide RNA (sgRNA), which will greatly enhance therapeutic potential of RNPs.</P> <P><B>Graphical abstract</B></P> <P>RNA nanoparticle (RNP) synthesized by complimentary rolling circle transcription process (cRCT) had morphological change via exposing to calcium ion forming to calcium coated RNP(CaRNP), which improved RNP in terms of efficient siRNA delivery system.</P> <P>[DISPLAY OMISSION]</P>
김상우(Sangwoo Kim),이준우(Joonwoo Lee),전세길(Segil Jeon),나연묵(Yunmook Nah) 한국정보과학회 2006 한국정보과학회 학술발표논문집 Vol.33 No.1
휴대전화, PDA, GPS 등 모바일 기기들의 발전과 보급으로 인하여 위치 기반 서비스에 대한 관심이 크게 증가하고 있다. 휴대폰 사용자 위치 추적과 같은 대용량의 객체를 처리하기 위해서 기존의 단일 노드 기반 시스템으로는 어려움이 있어, 클러스터 기반 분산 컴퓨팅 구조로 GALIS 아키텍처가 제안되었다. 본 논문에서 제안하는 질의 처리 성능 개선을 위한 버퍼링 기법은 GALIS 의 질의 처리 서브 시스템 성능 향상을 위해 질의 처리 결과를 버퍼링하고 연속된 질의 처리시 발생할 수 있는 중첩된 질의 영역을 관리하게 설계 하였다. 버퍼링 기법을 통해 수행되는 질의는 중첩된 질의 영역을 제외한 부분만을 수행하기 때문에 결과 셋의 크기를 줄여주는 역할을 하고, 질의 처리 시간 감소에 큰 영향을 미친다.