Sammon 매핑을 사용한 모션 데이터의 대화식 표정 애니메이션

김성호,Kim, Sung-Ho 한국정보처리학회 2004 정보처리학회논문지 A Vol.11 No.2

본 논문은 다량의 고차원 얼굴 표정 모션 데이터를 2차원 공간에 분포시키고, 애니메이터가 이 공간을 항해하면서 원하는 표정들을 실시간 적으로 선택함으로써 얼굴 표정 애니메이션을 생성하는 방법을 기술한다. 본 논문에서는 약 2400여개의 얼굴 표정 프레임을 이용하여 표정공간을 구성하였다. 표정공간의 생성은 임의의 두 표정간의 최단거리의 결정으로 귀결된다. 표정공간은 다양체 공간으로서 이 공간내의 두 점간의 거리는 다음과 같이 근사적으로 표현한다. 임의의 마커간의 거리를 표시하는 거리행렬을 사용하여 각 표정의 상태를 표현하는 표정상태벡터를 정의한 후, 두 표정이 인접해 있으면, 이를 두 표정 간 최단거리(다양체 거리)에 대한 근사치로 간주한다. 그리하여 인접 표정들 간의 인접거리가 결정되면, 이틀 인접거리들을 연결하여 임의의 두 표정 상태간의 최단거리를 구하는데, 이를 위해 Floyd 알고리즘을 이용한다. 다차원 공간인 표정공간을 가시화하기 위해서는 Sammon 매핑을 이용하여 2차원 평면에 투영시켰다. 얼굴 애니메이션은 사용자 인터페이스를 사용하여 애니메이터들이 2차원 공간을 항해하면서 실시간으로 생성한다. This paper describes method to distribute much high-dimensional facial expression motion data to 2 dimensional space, and method to create facial expression animation by select expressions that want by realtime as animator navigates this space. In this paper composed expression space using about 2400 facial expression frames. The creation of facial space is ended by decision of shortest distance between any two expressions. The expression space as manifold space expresses approximately distance between two points as following. After define expression state vector that express state of each expression using distance matrix which represent distance between any markers, if two expression adjoin, regard this as approximate about shortest distance between two expressions. So, if adjacency distance is decided between adjacency expressions, connect these adjacency distances and yield shortest distance between any two expression states, use Floyd algorithm for this. To materialize expression space that is high-dimensional space, project on 2 dimensions using Sammon's Mapping. Facial animation create by realtime with animators navigating 2 dimensional space using user interface.

심부 혈전 증의 외과적 혈전제거술

김성호,이상호,Kim, Seong-Ho,Lee, Sang-Ho 대한흉부심장혈관외과학회 1991 Journal of Chest Surgery (J Chest Surg) Vol.24 No.12

From July 1988 to January 1991 six patients, aged 29 to 70 years underwent transfemoral thrombectomy for the treatment of deep vein thrombosis. Preoperative venograms showed thrombi in the following locations: calf veins[five], superficial femoral or popliteal veins [four], common femoral veins[three], and iliac veins[three], Durations of symptoms before admission were from 1 day to 20days. Operations were performed under local anesthesia and all the patients were requested for doing Valsalva maneuver during thrombectomies. All patients were received heparin pre-and postoperatively, which was switched to Coumadin for preventing of rethrombosis. One patient was transferred to other hospital 4 months after operation due to regional reason, and the remained five patients were evaluated with a mean follow-up time of 20 months. There was no evidence of postoperative pulmonary embolism. Three of five patients were clinically asymptomatic. One complained of the heaviness of involved leg in the evening, and the other had discomfort on walking Even though our cases were a few in number, we concluded that thrombectomy is a valuable treatment modality of deep vein thrombosis.

A New Auto-Localization Scheme in Sensor Networks

김성호,장총위,Kim, Sung-Ho,Zhang, Cong Yi Institute of Control 2008 제어·로봇·시스템학회 논문지 Vol.14 No.9

Many sensor network applications require that each node's sensor data stream be annotated with its physical location in some coordinate system. Equipping GPS on every sensor node is often expensive and does not work in indoor deployments. Recently, cricket-based localization system is often used for indoor localization system. It is very important to know the exact position of beacons in cricket-based localization system for identifying moving sensor node's position. In this paper, a new method, Mobile Listener Detect Algorithm (MLD) which can automatically calculate the unknown newly installed beacons is proposed. For the verification of the feasibility of the proposed scheme, we have conducted several experiments.

마우스에서의 고선량(高線量) 방사선(放射線)에 의한 만성장해(慢性障害)

김성호,김영주,오영란,윤택구,Kim, Sung-ho,Kim, Young-ju,Oh, Yeong-ran,Yun, Taik-koo 대한수의학회 1987 大韓獸醫學會誌 Vol.27 No.2

Radiation-induced life shortening, carcinogenesis and other pathological changes were investigated in NIH(GP) mice after $^{60}Co-{\gamma}$ ray irradiation(100~700rads). The results were summarized as follows: 1. There were little difference in body weights, hematological examination and other clinical findings between normal and irradiated groups. 2. Mean survival time of the mice after irradiation were decreased dose-dependently. 3. Main gross findings of the mice irradiated were appeared as enlargement of spleen, thymus and lymph nodes, tumorous nodules of lung and cyst of ovary. Especially, enlargement of thymus was promineort in high dose group. 4. Microscopically, there were various findings including myeloid leukemia, thymic lymphoma, lung adenoma, adenosquamous cell carcinoma of pancreas, pneumonia and other pathological changes. Especially thymic lymphoma was highly frequent in the 700 rads group.

방사선조사(放射線照査)에 의한 Prostaglandin E₂ 및 자연살해세포(自然殺害細胞) 활성도(活性度)의 변화(變化)

김성호,Kim, Sung-ho 대한수의학회 1987 大韓獸醫學會誌 Vol.27 No.2

The number of splenic lymphocyte, serum prostaglandin $E_2$ level and natural killer cell activity were assayed after single whole body irradiation of a sublethal dose of $^{60}Co-{\gamma}$ ray to C57BL/6J mice. With a view to knowing the relationships between radiation induced prostaglandin $E_2$ level and the normal natural killer cell activity after natural killer cell-target cell conjugation, The change of normal natural killer cell activity were measured by administration of prostaglandin $E_2$ containing serum from irradiated mice. The results were summarized as follows; 1. The total number of splenic lymphocyte was significantly decreased by irradiation and the number was not affected by indometacin, prostaglandin synthesis inhibitor, treatment. 2. Serum prostaglandin $E_2$ level was increased in irradiated mice, but indometacin treated mice group showed low level of prostaglandin $E_2$. 3. In the case of irradiated mice, natural killer cell activity was not shown any difference between irradiated group and indometacin combined group. But when natural killer cell-target cell conjugations were exposed to the serum of each group during cytotoxic activity assay, whereas the normal natural killer cell activity was significantly decreased by treatment of serum from irradiated mice, the activity was not changed by treatment of indometacin pretreated mice serum. This result indicated that the prostaglandin $E_2$ induced by the radiation inhibited the post-target binding cytolytic process of natural killer activity.

황 회수 공정 설계에서 부 반응의 영향

김성호,정원석,이희문,장근수,Kim, Sung Ho,Jung, Won Seok,Lee, Hee Mun,Chang, Geun Soo 한국플랜트학회 2017 플랜트 저널 Vol.13 No.3

황회수 공정의 연소반응기 안에서는 평형반응 및 kinetic 반응이 동시에 일어난다. 주요 kinetic 반응에 참여하는 성분들은 수소($H_2$), 일산화탄소(CO), 카보닐황화물(COS) 그리고 이황화탄소($CS_2$) 이다. 본 연구에서는 평형반응, 상관관계식(empirical correlations) 그리고 황 회수 공정의 라이센서 자료의 비교를 통해 반응기에서 kinetic components (COS와 $CS_2$)의 생성 양을 분석한다. 또한 kinetic components ($H_2$ 와 CO)의 생성 양의 분석을 통해 반응기에서의 생성 양과 온도와의 상관관계를 분석한다. 부 반응이 전체 연소에 필요로 하는 산소의 양에 어떤 영향을 미치는지도 같이 분석을 한다. 황회수 공정의 반응기내의 부 반응에 대한 충분한 이해는 전체 황회수 공정 설계를 할 때 최적의 장치 설계를 가능하게 하고 나아가 황회수 효율을 극대화 하는데 도움이 된다. In the reaction furnace of modified Claus process, chemical equilibrium reactions and kinetic reactions occur simultaneously. The main kinetic components are hydrogen ($H_2$), carbon monoxide (CO), carbonyl sulphide (COS) and carbon disulphide ($CS_2$). The equilibrium calculations, empirical correlations and sulfur recovery technology providers' (licensors) data for kinetic components (COS and $CS_2$) in the reaction furnace were analyzed to evaluate the amount of kinetic components by applying them to five different projects in which GS Engineering & Construction participated. Kinetic components ($H_2$ and CO) are also calculated and the results are analyzed to evaluate the impact of temperature in the reaction furnace and the waste heat boiler. Total required $O_2$ deviations for combustion in the reaction furnace are additionally shown, with and without side reactions. A full understanding of side reactions in the modified Claus process can help to improve sulfur recovery efficiency and optimize equipment design.

Induction of Squamous Cell Carcinomas and Adenocarcinomas in Mouse Lung by Intratracheal Instillation of Benzo(a)pyrene and Urethan

김성호,이차수,Kim, Sung-ho,Lee, Cha-soo The Korean Society of Veterinary Science 1986 大韓獸醫學會誌 Vol.26 No.2

성숙한 A/J, $C_{57}BL/6N$, DBA/2 및 NIH-GP계(系) 마우스에 benzo(a) pyrene과 charcoal powder를, $C_{57}/6N$ 및 NIH-GP계(系) 마우스에 Urethan을 기관내(氣管內) 주입(注入)하여 폐장(肺臟)의 종양발생(腫瘍發生)과 조직변화(組織變化)를 관찰(觀察)한 바 다음과 같은 결과(結果)를 얻었다. Benzo(a)pyrene을 주입(注入)한 군(群)에서는 편평상피암(扁平上皮癌) 및 선암(腺癌), 그리고 편평상피암(扁平上皮癌)과 선암(腺癌)의 혼합 발생예(例)를 볼 수 있었다. 이와 같은 병변(病變)은 A/J 및 $C_{57}BL/6N$계(系) 마우스에서 발생률(發生率)이 높았으며 A/J계(系) 마우스에서 편평상피암(扁平上皮癌)의 발생(發生) 및 분화(分化)가 현저하였다. 한편 DBA/2 및 NIH-GP계(系) 마우스에서는 종양(腫瘍) 발생률(發生率)이 극히 낮았다. Benzo(a)pyrene의 주입시(注入時) 동일 계통의 마우스에서도 대량을 주입(注入)할 때 선암(腺癌)보다 편평상피암(扁平上皮癌)의 발생(發生)이 많았으며 A/J계(系) 마우스에서는 편평상피암(扁平上皮癌) 단독(單獨) 발생예(發生例)가 다수 관찰(觀察)되었고 $C_{57}BL/6N$계(系) 마우스에서는 선암(腺癌) 및 선암(腺癌)과 편평상피암(扁平上皮癌)의 혼합 형태(形態)가 주(主)로 관찰(觀察)되었다. 그리고 기관지상피(氣管支上皮)의 편평상피화생(扁平上皮化生) 및 편평상피암(扁平上皮癌)의 발생시(發生時) alcian blue-PAS 양성반응세포가 관여함을 알 수 있었고 선종양조직(腺腫樣組織) 발생예(發生例)에서도 편평상피화생(扁平上皮化生) 및 편평상피암(扁平上皮癌)으로 분화(分化)되는 경우도 관찰(觀察)되었다. Urethan 주입군(注入群)은 극히 낮은 종양발생률(腫瘍發生率)을 나타내어 발암물질(發癌物質)의 종류(種類), 용량(用量) 및 마우스의 계통(系統)에 따라 종양(腫瘍)의 발생률(發生率) 및 형태(形態)의 차이가 인정되었다.

아토피 아동 가정내 집먼지 진드기 농도와 환경요인: 환자 대조군 연구

김성호,박동진,변혜정,이현수,오인보,심창선,김양호,윤충식,Kim, Sung-Ho,Park, Dong-Jin,Byun, Hyae-Jeong,Lee, Hyun-Soo,Oh, In-Bo,Sim, Chang-Sun,Kim, Yang-Ho,Yoon, Chung-Sik 한국환경보건학회 2012 한국환경보건학회지 Vol.38 No.3

Objectives: The purpose of this study was to determine house dust mite concentrations in living rooms and bedding materials in atopic case-control groups. Methods: Fifty four homes with children suffering atopic diseases as cases and fifty one homes without atopic diseases as controls were selected after diagnosis at three elementary schools in Ulsan City. Dust samples were collected from the living rooms and bedding materials in each home during summer and winter with a vacuum cleaner and analyzed for house dust mites using enzyme-linked immunosorbent assay (ELISA). Environmental factors and family history were surveyed during sampling. Results: Both species of house dust mite Dermatophagoides farina (Der f 1) and Dermatophagoides pteronyssinus (Der p 1) were found in all homes. Derf1 concentrations were much higher than Der P1 concentrations, both in atopic homes (1518.9 vs. 27.0 ng/g. dust, respectively) and non-atopic homes (810.8 vs. 44.3 ng/g. dust, respectively). Der f 1 concentrations were significantly higher in the atopic group than in the non-atopic group (atopic: 1518.9 ng/g.dust, non-atopic: 810.8 ng/g.dust, p = 0.035). However, total house dust mite Der p 1 concentrations were significantly higher in the non-atopic group than in the atopic group (atopic: 27.0 ng/g.dust, non-atopic: 44.3 ng/g.dust, p = 0.035). Multiple regression implied that mothers with family history of atopic diseases (OR = 4.79, 95% CI = 1.81-12.69), Der f 1 concentrations (OR = 1.74, 95% CI = 1.07-2.81), and air freshener use (OR = 4.60, 95% CI = 1.72-12.34) had significant associations with atopic children. Conclusion: House dust mite Der f 1 concentrations were associated with atopic children. This study suggests that parents should reduce house dust mite Der f 1 concentrations through environmental controls.

NED를 사용하는 FH-CSS(Frequency Hopped - Chirp Spread Spectrum)의 항 재밍 성능 분석

김성호,김영재,황석구,조병각,신관호,김남,Kim, Sung-Ho,Kim, Young-Jae,Hwang, Seok-Gu,Jo, Byoung-Gak,Shin, Kwan-Ho,Kim, Nam 한국군사과학기술학회 2011 한국군사과학기술학회지 Vol.14 No.1

In the defence wireless communications, conventional Anti-Jamming techniques(Frequency Hopping/Spread Spectrum or Direct Sequence/Spread Spectrum) are used to overcome a intentional interfering signals which are single/multitone or partial band jammer etc. DS/SS techniques is very strong on tone jamming signal but not to be on a partial band jammer. So FH/SS AJ performances are expected method of an substitution of DS/SS, however FH/SS could not have good performance on some BMTJ(Band Multi-tone Jammer). So this paper proposes FH-CSS (Frequency Hopped - Chirp Spread Spectrum) to get more robustness against jammers(BMTJ, PBNJ) and analyze the AJ performances.

Bacillus sp. K-1과 그의 변이주가 생산하는 Biopolymer의 물성에 관한 연구

김성호,임무현,정낙현,Kim, Sung-Ho,Yim, Moo-Hyun,Choung, Nack-Hyun 한국응용생명화학회 1996 Applied Biological Chemistry (Appl Biol Chem) Vol.44 No.1

볏짚으로부터 분리한 Bacillus sp. K-1과 그 변이주 KM-21과 KM-83이 생산하는 biopolymer들의 물성학적 성질을 비교 조사하였다. 은도에 따른 biopolymer의 겉보기 점도는 온도가 높아짐에 따라 감소하였으며, $20^{\circ}C$일 때에 비해 $80^{\circ}C$일 때 KM-21 균주가 생산하는 biopolymer는 1.7배, K-1균주의 biopolymer는 2.7배, KM-83 균주의 biopolymer는 1.9배 정도로 낮은 점성을 보였다. Biopolymer 용액의 점성은 농도가 증가함에 따라 크게 증가하여 6%의 농도에서 가장 높게 나타났으며, 2%, 4%, 6% 모두 pseudoplastic특성을 나타내어 농도에 대한 의존성이 매우 높았다. 6%의 농도일 때 2%의 농도와 비교해서 전단 속도가 $93\;sec^{-1}$ 일 때 KM-21은 26배, K-1은 56배, KM-83은 28배로 모균주의 biopolymer인 K-1이 가장 높은 점성을 보었다. pH에 따른 점도 변화는 pH7.0에서 최고를 보였으며, 알칼리성 조건일 때에 비해 산성조건에서 상대적으로 낮은 값의 점성을 보였다. The rheological properties of biopolymers produced by Bacillus sp. K-1 and its mutant strains(KM-21, KM-83) were studied. Apparent viscosity of biopolymers decreased as rising the temperature. The biopolymer produced by KM-21 strain showed 1.7 times low viscosity, 2.7 times low viscosity by K-1 and 1.9 times low viscosity by KM-83 at $80^{\circ}C$ compared with at $20^{\circ}C$ respectively. The viscosity of biopolymer solution also increased with increasing the polymer concentration and showed pseudoplastic characteristics which is high temperature dependency in all concentration. The change of the biopolymer viscosity on the pH showed the highest value at the pH 7.0 and it showed lower at acidic condition than at alkaline condition comparatively.