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독감 확산 예측을 위한 멀티모달 학습과 웨어러블 센서 기반의 기침 감지 시스템 설계
강재식 ( Jae-sik Kango ),백문기 ( Moon-ki Back ),최형탁 ( Hyung-tak Choi ),이규철 ( Kyu-chul Lee ) 한국정보처리학회 2018 한국정보처리학회 학술대회논문집 Vol.25 No.1
본 논문에서는 독감확산 예측을 위한 웨어러블 센서를 이용한 기침 감지 모델을 제안한다. 서로 상이한 기침 신체데이터를 사용하고 기침 감지 알고리즘의 구현없이 기계가 학습하는 방식인 멀티모달 DNN을 이용하여 설계하였다. 또한 웨어러블 센서를 통해 실생활의 기침 오디오 데이터와 기침 3축 가속도 데이터를 수집하였고, 두 개의 데이터중 하나의 데이터만으로도 감지를 위한 학습이 가능토록하기 위해 각각 MFCC와 FFT를 이용하여 특징 벡터를 추출하는 방법을 이용하였다.
Singh, Amit,Tare, Meghana,Kango-Singh, Madhuri,Son, Won-Seok,Cho, Kyung-Ok,Choi, Kwang-wook Elsevier 2011 Developmental biology Vol.359 No.2
<P><B>Abstract</B></P><P>Patterning in multi-cellular organisms involves progressive restriction of cell fates by generation of boundaries to divide an organ primordium into smaller fields. We have employed the <I>Drosophila</I> eye model to understand the genetic circuitry responsible for defining the boundary between the eye and the head cuticle on the ventral margin. The default state of the early eye is ventral and depends on the function of <I>Lobe (L)</I> and the Notch ligand <I>Serrate (Ser)</I>. We identified <I>homothorax (hth)</I> as a strong enhancer of the <I>L</I> mutant phenotype of loss of ventral eye. Hth is a MEIS class gene with a highly conserved Meis-Hth (MH) domain and a homeodomain (HD). Hth is known to bind Extradenticle (Exd) via its MH domain for its nuclear translocation. Loss-of-function of <I>hth</I>, a negative regulator of eye, results in ectopic ventral eye enlargements. This phenotype is complementary to the <I>L</I> mutant phenotype of loss-of-ventral eye. However, if <I>L</I> and <I>hth</I> interact during ventral eye development remains unknown. Here we show that (i) <I>L</I> acts antagonistically to <I>hth</I>, (ii) Hth is upregulated in the <I>L</I> mutant background, and (iii) MH domain of Hth is required for its genetic interaction with L, while its homeodomain is not, (iv) in <I>L</I> mutant background ventral eye suppression function of Hth involves novel MH domain-dependent factor(s), and (v) nuclear localization of Exd is not sufficient to mediate the Hth function in the <I>L</I> mutant background. Further, Exd is not a critical rate-limiting factor for the Hth function. Thus, optimum levels of L and Hth are required to define the boundary between the developing eye and head cuticle on the ventral margin.</P> <P><B>Highlights</B></P><P>► We study the genetic mechanism involved in generation of head versus eye boundary during organogenesis in flies. ► <I>homothorax (hth)</I> acts antagonistically to the <I>Lobe</I> (<I>L</I>, PRAS40 homolog) in the ventral eye. ► L interacts with alternative spliced variant of Hth that encodes Meis-Hth (MH) domain. ► Optimum level of <I>L</I> and <I>hth</I> define boundary between eye and the head cuticle on ventral margin. ► Extradenticle (Exd) is not a critical rate limiting factor in L and Hth interaction.</P>
임태우(Taewoo Rhim),강혜란(Haeran Kango),이경호(Kyong-Ho Lee) 한국정보과학회 2005 한국정보과학회 학술발표논문집 Vol.32 No.1
XML 스키마의 수가 급증함에 따라 동일한 도메인에 속하는 유사한 스키마를 통합하는 방법에 대한 관심이 증가하고 있다. 일반적으로 XML 스키마 통합 과정은 스키마 클러스터링과 통합 스키마 추출의 두 단계로 구성된다. 본 논문에서는 통합 스키마의 추출을 위한 효율적인 방법을 제안한다. 제안된 방법은 공통 구조 추출, 스키마 통합, 그리고 최적화의 세 단계로 이루어진다. 실험결과, 제안된 방법은 처리시간 및 정확도 측면에서 우수한 결과를 보였다.
성재규,강진구,Sung, Jae-Gyu,Kango, Jin-Ku 한국전기전자학회 2006 전기전자학회논문지 Vol.10 No.1
본 논문은 PLL구조에서 새로운 버니어 지연 VCO구조를 이용한 다중위상 발생회로를 서술하였다. 제안하는 기법은 VCO의 지연단의 지연보다 더 미세한 타이밍신호를 만들어낸다. 0.18um CMOS공정을 이용하여 칩 제작 후 측정결과 1GHz에서 약 62.5ps의 위상정밀도를 갖는 신호를 만들었고 지터는 14ps로 측정되었다. This paper shows a vernier delay technique for generating precise multiphase clocks using PLL structure. The proposed technique can achieve the finer timing resolution less than the gate delay of the delay chain in VCO. Using this technique, 62.5ps of timing resolution can be achieved if the reference clock rate is set at 1GHz using 0.18um CMOS technology. Jitter of 14ps peak-to-peak was measured.
원적외선 및 증숙 처리에 따른 인삼 잎의 Protopanaxadiol Ginsenosides 변화
Seok-Hyun Eom,Su-Hyun Seo,Amal Kumal Gimery,Cheng Wu Jin,Eun-Young Kango,Wie-Soo Kang,Ill-Min Chung,Dong-Ha Cho 한국약용작물학회 2008 한국약용작물학회지 Vol.16 No.5
PPD ginsenosides in ginseng leaf were analyzed to determine effects of either FIR heat or steaming heat treatment. Among the PPD ginsenosides, Rb1, Rc and Rb3 forming four glycoside-attached aglycons were increased as FIR heat temperatures were increased from 60 to 120℃, while Rb3 was decreased. In addition, FIR heat treatment was effective to increase Rd forming a three glycoside-attached aglycon. Rg3 and Rh2 were not increased by the FIR heat treatment. In steaming heat treatment, Rb1 was significantly decreased, while Rb2 was increased. Rd was also increased by increased steaming temperature, yet its content was lower than in the FIR heat treatment. However, the steaming heat treatment increased yields of Rg3 and Rh2, which were not observed in the FIR heat treatment. Thus, FIR heat treatment was beneficial to efficient products of Rb1, Rc, Rb3 and Rd. Steaming heat treatment was effective to higher collection of Rb2, Rg3 and Rh2.