Effect of Empathy Trait on Attention to Faces: Evidence from N170

( Damee Choi ),( Takayuki Nishimura ),( Midori Motoi ),( Yuka Egashira ),( Riko Matsumoto ),( Shigeki Watanuki ) 한국감성과학회 2014 춘계학술대회 Vol.2014 No.-

To extend knowledge of relationship between empathy trait and attention to face, the present study aimed at investigating relationship between self-reported empathy trait and N170 elicited by five facial expressions (happy, angry, surprised, afraid, and sad). Twenty-two participants (12 males and 10 females) discriminated those five facial expressions from emotionally neutral faces under an oddball paradigm while event-related potentials (ERP) were recorded. The empathy trait of participants was measured using the Interpersonal Reactivity Index (IRI, Davis, 1980). The results revealed that participants with high IRI score showed more negative amplitude of N170 (140 to 200 ms after stimulus onset) than those with low IRI score at posterior temporal area in response to happy, angry, surprised, and afraid faces. The present study thus suggests that people with high empathy trait pay attention to faces more than those with low empathy, in very early stage of processing of face with happy, angry, surprised, and afraid expressions. Furthermore, this also indicates that empathy trait is related with attention processing of not only negative expressions (angry and afraid) but also positive (happy) and ambiguous expression (surprised).

Research on Reliability of Hadoop Distributed File System

Daming Hu,Deyun Chen,Shuhui Lou,Shujun Pei 보안공학연구지원센터 2015 International Journal of Multimedia and Ubiquitous Vol.10 No.11

Research on Hadoop Identity Authentication Based on Improved Kerberos Protocol

Daming Hu, Deyun Chen,Yuanxu Zhang,Shujun Pei 보안공학연구지원센터 2015 International Journal of Security and Its Applicat Vol.9 No.11

This paper researches the authentication mechanism of Kerberos protocol under HDFS, and points out the problems that identity authentication mechanism of Kerberos protocol faced in HDFS cluster environment: time synchronization, KDC security, dictionary attacks and denial mechanism. Aiming at these security problems, firstly, this paper provides an overview of the authentication process of the current Kerberos protocol under HDFS cluster environment; secondly, it modifies Kerberos protocol by using public key encryption and data signature mechanism; lastly, it provides the authentication process of improved Kerberos protocol in HDFS environment. Comprehensive analysis shows that both safety and time efficiency of the improved Kerberos protocol are improved compared with the existing identity authentication mechanism. It provides a more reliable and efficient identity authentication solution for HDFS cluster.

Oxytocin Receptor Gene Polymorphism and Brain Activity

( Damee Choi ),( Natsumi Minote ),( Fumi Kishida ),( Shigeki Watanuki ) 한국감성과학회 2015 추계학술대회 Vol.2015 No.-

Oxytocin is an important neuroactive hormone for social behaviors. Previous studies have reported that genetic variation in the oxytocin receptor is associated with individual differences in response to social cues. However, it remains unclear whether the oxytocin receptor gene modulates responses to nonsocial cues, such as inanimate objects. Therefore, in the present study, we investigated the relationship between the oxytocin receptor gene rs53576 and event-related potential (ERP) responses evoked by watching images depicting either humans or inanimate objects. Eighty-three Japanese men (GG, n = 10; GA, n = 43; AA, n = 30) participated in this study. We found that GG/GA individuals displayed greater N1 and early posterior negativity (EPN) than AA individuals regardless of image content (human or object). This suggests that GG/GA individuals have a tendency to respond to emotional stimuli more automatically than AA individuals, even when stimuli do not contain social cues. GG/GA individuals also showed higher self-reported trait empathy, in accordance with previous studies. These results suggest that genetic variation in the oxytocin receptor gene might account for individual differences in emotional processing of both social cues and nonsocial cues. In conclusion, our findings suggest that genetic variation in the oxytocin receptor gene modulates a wide range of social and emotional behaviors.

Development of Emotion Evaluation Indicators for Door Module Lightweight Development and Analysis Study on Sensibility Evaluation

( Damee Kim ),( Seunghee Hong ),( Young Seo ),( Se Jin Park ) 한국감성과학회 2017 한국감성과학회 국제학술대회(ICES) Vol.2017 No.-

The door module means that various components such as window regulator, door latch, speaker, etc. mounted on the door of the automobile are assembled in the door module panel. In the automobile industry as well as in the domestic market, automobile weight has recently been reduced, and new materials are being applied to reduce the weight of automobiles. On average, the door module weighs approximately 1400 grams. However, in the automobile industry, the entry of 1,200 grams is required to increase fuel efficiency. However, such weight reduction is expected to cause problems such as the occurrence of joints between parts due to the weight reduction and the deterioration of the speaker sound quality in the door module when viewed from the viewpoint of the sensitivity quality of the driver. As a result, we have conducted research to measure the satisfaction of emotional quality according to the weight reduction of the door module. In this study, emotion evaluation, speaker sound pressure, and operating noise were performed during door module operation in order to evaluate emotional satisfaction with light weight. We use emotional standardization index for evaluation. The target material is a door module before and after lightening, and the manufacturer is a light source machine. For emotional evaluation, EEG, heart rate, and subjective satisfaction were measured for objective evaluation. As a result of subjective satisfaction, it was broken the hypothesis that the emotional quality would be deteriorated due to the lengthening of the light weight, and the sensibility quality did not deteriorate even when the door module was operated (GLASS DOWN, UP). This research was financially supported by the Ministry of Trade, Industry, and Energy (MOTIE), Korea, under the “Regional industry based organization support program”(reference number R0004070) supervised by the Korea Institute for Advancement of Technology (KIAT).

Functional Expression and Characterization of Multi-Domain endo-(1,5)-α-L-Arabinanase-B GH43 from Streptococcus equinus

Damee Park,Heeji Shin,Tae Hyeon Park,Jeong-Rok Song,Tae-Jip Kim 한국당과학회 2021 한국당과학회 학술대회 Vol.2021 No.01

endo-(1,5)-α-L-Arabinanase (AN, EC 3.2.1.99) is an endo-acting hydrolase which can randomly hydrolyze the internal α-(1,5)-L-arabinofuranosidic linkages of arabinan polymers. The arabinan-utilization gene cluster was found from the genome of Streptococcus equinus, and a probable extracellular endo-AN GH43 (SteqAN43B) gene was cloned and heterologously expressed in Escherichia coli. The corresponding open reading frame consists of 2,283 nucleotides encoding 761 amino acids. This enzyme possesses the longer N- and C-terminal domains, compared with common bacterial ANs. Although the debranched (linear) arabinan is the most preferred substrate, SteqAN43B showed the significant hydrolytic activity on sugar beet (branched) arabinan as well. Its modes of action are suitable for the production of various branched arabinooligosaccharides from sugar beet arabinan, and the synergistic hydrolysis of arabinans in combination with the other exo-AFs.

A fast numerical method for solving a regularized problem associated with obstacle problems

DaMing Yuan,Xi Li,ChengFeng Lei 대한수학회 2012 대한수학회지 Vol.49 No.5

Kirsi Majava and Xue-Cheng Tai [12] proposed a modified level set method for solving a free boundary problem associated with unilateral obstacle problems. The proximal bundle method and gradient method were applied to solve the nonsmooth minimization problems and the regularized problem, respectively. In this paper, we extend this approach to solve the bilateral obstacle problems and employ Rung-Kutta method to solve the initial value problem derived from the regularized problem. Numerical experiments are presented to verify the efficiency of the methods.

Effect of Lamination on Complex Permeability of Mn-Zn Ferrites in a Wide Frequency Range and its Application to Improvement of HFCT

Daming Zhang 한국자기학회 2008 한국자기학회 학술연구발표회 논문개요집 Vol.- No.-

Insights into the low adhesive capacity of human T-cadherin from the NMR structure of Its N-terminal extracellular domain.

Dames, Sonja A,Bang, Eunjung,Haü,ssinger, Daniel,Ahrens, Thomas,Engel, Jü,rgen,Grzesiek, Stephan American Society for Biochemistry and Molecular Bi 2008 The Journal of biological chemistry Vol.283 No.34

<P>T-cadherin is unique among the family of type I cadherins, because it lacks transmembrane and cytosolic domains, and attaches to the membrane via a glycophosphoinositol anchor. The N-terminal cadherin repeat of T-cadherin (Tcad1) is approximately 30% identical to E-, N-, and other classical cadherins. However, it lacks many amino acids crucial for their adhesive function of classical cadherins. Among others, Trp-2, which is the key residue forming the canonical strand-exchange dimer, is replaced by an isoleucine. Here, we report the NMR structure of the first cadherin repeat of T-cadherin (Tcad1). Tcad1, as other cadherin domains, adopts a beta-barrel structure with a Greek key folding topology. However, Tcad1 is monomeric in the absence and presence of calcium. Accordingly, lle-2 binds into a hydrophobic pocket on the same protomer and participates in an N-terminal beta-sheet. Specific amino acid replacements compared to classical cadherins reduce the size of the binding pocket for residue 2 and alter the backbone conformation and flexibility around residues 5 and 15 as well as many electrostatic interactions. These modifications apparently stabilize the monomeric form and make it less susceptible to a conformational switch upon calcium binding. The absence of a tendency for homoassociation observed by NMR is consistent with electron microscopy and solid-phase binding data of the full T-cadherin ectodomain (Tcad1-5). The apparent low adhesiveness of T-cadherin suggests that it is likely to be involved in reversible and dynamic cellular adhesion-deadhesion processes, which are consistent with its role in cell growth and migration.</P>

Age-Related Differences in the Perception of Emotion in Emotional Speech: The Effects of Semantics and Prosody

Damee Kim,Hyun-Sub Sim,Youngmee Lee 한국청각언어재활학회 2022 Audiology and Speech Research Vol.18 No.1

Purpose: This study aimed to identify the age-related differences in the perception of emotion in speech, focusing on the effects of semantics and prosody. Methods: Thirty-two young adults and 32 elderly adults participated in this study. We implemented the test for rating of emotions in speech. The participants were presented with spoken sentences, which consisted of four emotional categories (anger, sadness, happiness, and neutral) in terms of prosody and semantics. In the general rating tasks, the participants were asked to listen to the sentences and rated the degree of the speaker’s emotions. In the attention rating tasks, the participants were asked to focus on only one cue (prosody and semantics) and to rate how much they agree with the speaker’s emotion. Results: The young group scored significantly higher than the elderly group on the general rating tasks and attention rating tasks. The elderly group scored higher on the semantic tasks than on the prosodic tasks, while the young group scored similarly on the semantic and prosodic tasks. Conclusion: The elderly adults have lower abilities to perceive emotion in speech than the young adults. They have difficulty in using the prosodic cues of emotional speech. In addition, the elderly adults try to use the semantic cues of emotional speech in order to compensate for their poor abilities to process the prosodic cues.