• Title/Summary/Keyword: Expression Control

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Motion Control of Character Animation Using Expressions (익스프레션을 이용한 캐릭터 애니메이션의 동작 제어)

  • 김형균;오무송;고석만;김장형
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2003.05a
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    • pp.574-577
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    • 2003
  • This paper manufactured animation to use expression for efficient action control of character animation. Animation to use expression is method to express natural animation little more easily and usefully in expression of motion. Find urea that could control animation in expression analyzing action control points of character and used in ceremony. Embodied animation to control automatically action of character on the basis of this. Efficiency of expression that animation by expression can create natural and realistic action by manufacturing that is simple was expose by advantage, but showed awkwardness than animation by key frame way by animator.

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Phased Visualization of Facial Expressions Space using FCM Clustering (FCM 클러스터링을 이용한 표정공간의 단계적 가시화)

  • Kim, Sung-Ho
    • The Journal of the Korea Contents Association
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    • v.8 no.2
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    • pp.18-26
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    • 2008
  • This paper presents a phased visualization method of facial expression space that enables the user to control facial expression of 3D avatars by select a sequence of facial frames from the facial expression space. Our system based on this method creates the 2D facial expression space from approximately 2400 facial expression frames, which is the set of neutral expression and 11 motions. The facial expression control of 3D avatars is carried out in realtime when users navigate through facial expression space. But because facial expression space can phased expression control from radical expressions to detail expressions. So this system need phased visualization method. To phased visualization the facial expression space, this paper use fuzzy clustering. In the beginning, the system creates 11 clusters from the space of 2400 facial expressions. Every time the level of phase increases, the system doubles the number of clusters. At this time, the positions of cluster center and expression of the expression space were not equal. So, we fix the shortest expression from cluster center for cluster center. We let users use the system to control phased facial expression of 3D avatar, and evaluate the system based on the results.

Regulation of Gene Expression for Amino Acid Biosynthesis in the Yeast, Sacchromyces cerevisiae

  • Lea, Ho Zoo
    • Proceedings of the Zoological Society Korea Conference
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    • 1995.10b
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    • pp.82-82
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    • 1995
  • Regulation of enzyme synthesis by transcriptional and translational control systems provides rather stable adaptation to change of amino acid level in the growth medium, while manipulation of enzyme activity through endproduct feedback inhibition represents rather short-term and reversible ways of adjusting metabolic fluctuation of amino acid level. Various control mechanisms interplay to regulate genes encoding enzymes for amino acid biosynthesis in the yeast, Sacchromyces cerevisiae. When amino acids are in short supply, genes under a cross-pathway regulatory mechanism Or general amino acid control (general control) increase their action, in which Gcn4p is the major positive regulator of gene expression. When cells are cultured in minimal medium, basal level expression is also regulated by supplementary control elements, where inorganic phosphate level is additionally involved. Most of amino acid biosynthetic genes are also regulated by the level of endproduct of the pathway. This pathway-specific regulatory mechanism is called specific amino acid control (specific controD, under which gene expression is reduced when endproduct is present in the medium. Derepression of a gene through general control can be usually overridden by repression through specific control, where the endproduct level of that particular pathway is high and not limiting. In this presentation, regulatory factors for basal level expression and general control of yeast amino acid biosynthesis will be discussed, m addition to pathway-specific repression patterns and interaction between CrOSS- and specific-control mechanisms. Preliminary results are also presented from the investigation of the cloned genes in the threonine biosynthetic pathway of the yeast. yeast.

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The Effect of Bee Venom on COX-2, P38, ERK and JNK in RAW 264.7 Cells (봉약침액(蜂藥鍼液_이 RAW 264.7 세포의 COX-2, P38, ERK 및 JNK에 미치는 영향(影響))

  • Sim, Jae-Young;Jo, Hyun-Chol;Lee, Seong-No;Kim, Kee-Hyun
    • Journal of Pharmacopuncture
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    • v.6 no.2
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    • pp.77-90
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    • 2003
  • The purpose of this study was to investigate the effect of Bee Venom on the lipopolysaccharide(LPS), sodium nitroprusside(SNP), hydrogen peroxide($H_2O_2$)-induced expressions of cyclooxygenase-2(COX-2), p38, jun N-terminal Kinase(JNK) and extra-signal response kinase(ERK) in RAW 264.7 cells, a murine macrophage cell line. Method : The expressions of COX-2, p38, JNK and ERK were determined by western blotting with corresponding antibodies. Results : 1. The 0.5, 1 and $5\;{\mu}g/ml$ of bee venom inhibited significantly LPS and SNP-induced expression of COX-2 compared with control, respectively. The 0.5, 1 and $5\;{\mu}g/ml$ of bee venom inhibited insignificantly $H_2O_2$-induced expression of COX-2 compared with control, respectively. 2. The 0.5, 1 and $5\;{\mu}g/ml$ of bee venom inhibited significantly LPS, SNP and $H_2O_2$-induced expression of p38 compared with control, respectively. 3. The 1 and $5\;{\mu}g/ml$ of bee venom inhibited significantly SNP-induced expression of JNK compared with control, respectively. All of bee venom inhibited insignificantly LPS and $H_2O_2$-induced expression of JNK compared with control, respectively. 4. The $5\;{\mu}g/ml$ of bee venom inhibited significantly SNP-induced expression of ERK, the $0.5\;{\mu}g/ml$ of bee venom increased significantly $H_2O_2$-induced expression of ERK compared with control. The 0.5, 1 and $5\;{\mu}g/ml$ of bee venom inhibited insignificantly LPS-induced expression of ERK compared with control, respectively.

Experimental Studies on the Expression of Hair Growth Related Factors after Acupuncture & Moxibustion Therapy (침구요법(鍼灸療法)에 의한 발모관련 인자들의 발현에 대한 실험적 연구)

  • Kim, Ho-Il;Kim, Cheong-Moo;Lee, Chang-Hyun
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.25 no.4
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    • pp.674-682
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    • 2011
  • The present study was undertaken to investigate the effect of acupuncture & moxibustion therapy on the hair follicle growth of skin 5 days and 10 days by macroscopic, microscopic and immunohistochemical methods. The results were as follows : Macroscopic hair follicle growth of plum-blossom needle treated group and strong moxibustion treated group was more increase than that of control group. Microscopic hair follicle growth of plum-blossom needle treated group and strong moxibustion treated group was hair growing cycle, anagen phase VI and that of control group and weak moxibustion treated group was hair growing cycle, anagen phase IV. Immunohistochemical observations on the expression of various growth factors, enzyme and receptor in hair follicle cycle after local treatment of acupuncture & moxibustion therapy are as follows: Expression of fibroblast growth factor was more intense in epidermis in plum-blossom needle treated group, epidermis and secondary hair germ cells in strong moxibustion treated group than control group. Expression of epidermal growth factor was more intense in epidermis in all experimental groups, and secondary hair germ cells in moxibustion treated group than control group. Expression of c-kit receptor was more intense in epidermis, secondary hair germ cells, outer root sheath in all experimental groups than control group. Expression of protein kinase C-${\alpha}$ was more intense in epidermis, secondary hair germ cells, outer root sheath in all experimental groups than control group. Expression of vascular endothelial growth factor was more intense in epidermis, bulge, secondary hair germ cells, outer root sheath in plum-blossom needle treated group and strong moxibustion treated group than control group. We concluded that acupuncture & moxibustion therapy related to the expression of various growth factors, enzymes and receptor on the hair growth cycle for hair growth.

Auto Setup Method of Best Expression Transfer Path at the Space of Facial Expressions (얼굴 표정공간에서 최적의 표정전이경로 자동 설정 방법)

  • Kim, Sung-Ho
    • The KIPS Transactions:PartA
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    • v.14A no.2
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    • pp.85-90
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    • 2007
  • This paper presents a facial animation and expression control method that enables the animator to select any facial frames from the facial expression space, whose expression transfer paths the system can setup automatically. Our system creates the facial expression space from approximately 2500 captured facial frames. To create the facial expression space, we get distance between pairs of feature points on the face and visualize the space of expressions in 2D space by using the Multidimensional scaling(MDS). To setup most suitable expression transfer paths, we classify the facial expression space into four field on the basis of any facial expression state. And the system determine the state of expression in the shortest distance from every field, then the system transfer from the state of any expression to the nearest state of expression among thats. To complete setup, our system continue transfer by find second, third, or fourth near state of expression until finish. If the animator selects any key frames from facial expression space, our system setup expression transfer paths automatically. We let animators use the system to create example animations or to control facial expression, and evaluate the system based on the results.

Effects of Parental Attachment and Depressive Mood on Anger Expression Style among College Students (대학생이 지각한 부모애착과 우울감 및 분노표현 방식에 관한 연구)

  • Yoo, Hyun-Sook;Chung, Hye-Jeong;Lee, Ju-Yeon
    • Korean Journal of Human Ecology
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    • v.21 no.1
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    • pp.1-14
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    • 2012
  • This research examines the effects of parental attachment as a family-related variable, and depressive mood as an individual variable on anger expression style among Korean college students. Anger expression style was divided into three domains including anger-in, anger-out, and anger-control. The data were collected from 437 college student respondents using a self-administered questionnaire. The results demonstrated that male students displayed higher levels of anger-control compared to females, but no gender-related difference in the level of anger-in and anger-out. In addition, anger-control was positively associated with parental attachment. However, anger control in terms of anger-in and anger-out were negatively related to parental attachment and positively linked to depression. Additionally, parental attachment demonstrated a negative correlation with depressive mood. Multiple regression results indicated that after controlling for the effect of gender, anger-control expression style was influenced by parental attachment but not by depressive mood. In addition, anger-out and anger-in expression styles were influenced by depressive mood but not by parental attachment. Finally, implications for educators and clinicians working with college students and their family are discussed along with some suggestions for future research.

Chronic Exposure of Nicotine Modulates the Expressions of the Cerebellar Glial Glutamate Transporters in Rats

  • Lim, Dong-Koo;Kim, Han-Soo
    • Archives of Pharmacal Research
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    • v.26 no.4
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    • pp.321-329
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    • 2003
  • Rats were given nicotine (25 ppm) in their drinking water at the start of their mating period in order to study the expressions of glutamate transporter subtypes in cerebellar astrocytes following the chronic exposure of nicotine after mating. After the offspring were delivered, each group was divided into two subgroups. One group, the control group, was given distilled water only and the other group, the experimental group, was given distilled water containing nicotine. The cerebellar astrocytes were prepared from 7 day-old pups at each group. Ten days after the cells were cultured, the expression of the glutamate transporter subtypes (GLAST and GLT-1) was determined using immunochemistry and immunoblotting. During the continuous treatments, the developmental expression patterns of the GLAST and GLT-1 in the cerebellum were also determined from 2, 4 and 8 week-old rats. The expression levels of GLAST in cultured astrocytes of both the pre- or post-natally exposed groups were higher than those of the control group. However, these expression levels of the continuously exposed group were lower than those of the control group. Compared to those of the control group, the GLT-1 expression levels of all the nicotine-treated groups were higher, particularly in the continuously treated group.. According to the results from the immochemistry procedure, the cerebellar GLAST and GLT-1 expression levels of all nicotine-treated groups were lower than those of the control group at each age. However, the immunoblotting procedure showed that the cerebellar GLT-1 expression levels of all the nicotine-treated groups were higher than those of the control group, except for the rats that were continuously exposed for 8 weeks using immunoblotting. These results suggest that the expression of the glial GLAST and GLT-1 are altered differently depending on the initial exposure time and the partcicular period of nicotine exposure. In addition, nicotine exposure during gestation has persistent effects on glial cells.

A Face Expression Recognition Method using Histograms (히스토그램을 이용한 얼굴 표정 인식 방법)

  • Huh, Kyung Moo
    • Journal of Institute of Control, Robotics and Systems
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    • v.20 no.5
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    • pp.520-525
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    • 2014
  • Generally, feature area detection methods are widely used for face expression recognition by detecting the feature areas of human eyes, eyebrows and mouth. In this paper, we proposed a face expression recognition method using the histograms of the face, eyes and mouth for many applications including robot technology. The experimental results show that the proposed method has a new type of face expression recognition capability compared to conventional methods.

Quality Control Usage in High-Density Microarrays Reveals Differential Gene Expression Profiles in Ovarian Cancer

  • Villegas-Ruiz, Vanessa;Moreno, Jose;Jacome-Lopez, Karina;Zentella-Dehesa, Alejandro;Juarez-Mendez, Sergio
    • Asian Pacific Journal of Cancer Prevention
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    • v.17 no.5
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    • pp.2519-2525
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    • 2016
  • There are several existing reports of microarray chip use for assessment of altered gene expression in different diseases. In fact, there have been over 1.5 million assays of this kind performed over the last twenty years, which have influenced clinical and translational research studies. The most commonly used DNA microarray platforms are Affymetrix GeneChip and Quality Control Software along with their GeneChip Probe Arrays. These chips are created using several quality controls to confirm the success of each assay, but their actual impact on gene expression profiles had not been previously analyzed until the appearance of several bioinformatics tools for this purpose. We here performed a data mining analysis, in this case specifically focused on ovarian cancer, as well as healthy ovarian tissue and ovarian cell lines, in order to confirm quality control results and associated variation in gene expression profiles. The microarray data used in our research were downloaded from ArrayExpress and Gene Expression Omnibus (GEO) and analyzed with Expression Console Software using RMA, MAS5 and Plier algorithms. The gene expression profiles were obtained using Partek Genomics Suite v6.6 and data were visualized using principal component analysis, heat map, and Venn diagrams. Microarray quality control analysis showed that roughly 40% of the microarray files were false negative, demonstrating over- and under-estimation of expressed genes. Additionally, we confirmed the results performing second analysis using independent samples. About 70% of the significant expressed genes were correlated in both analyses. These results demonstrate the importance of appropriate microarray processing to obtain a reliable gene expression profile.