몰핑 얼굴 표정의 평가와 회복탄력성의 관계

박재형(Jaehyung Park),박현우(Hyunwoo Park),한승리(Seungrie Han),박경민(Kyungmin Park) 대한사회정신의학회 2018 사회정신의학 Vol.23 No.2

연구목적 : 회복탄력성은 역경에도 불구하고 정신건강을 유지할 수 있는 능력이며, 회복탄력성이 높은 사람들이 타인의 감정을 긍정적으로 인식하고 평가하는 능력에 강점이 있을 가능성이 제시되었다. 이에 본 연구에서는 일반인을 대상으로 긍정과 부정의 감정이 몰핑된 얼굴 표정에 대해 긍정적이라고 평가하는 정도가 회복탄력성과 어떠한 관계가 있는지 확인하고자 하였다. 방 법 : 경기도 일개 시에서 생활하고 있는 일반인 50명을 대상으로 얼굴 표정 인식 실험을 진행하고 회복탄력성 척도, 긍정적 정서 및부정적 정서 척도를 자기보고식 설문을 통해 확인하였다. 실험은 몰핑 프로그램을 사용하여 제작한 다양한 혼합 표정 사진을 제시 하고 긍정적인 표정인지, 부정적인 표정인지를 반드시 고르도록 하여 조사하였다. 몰핑 정서 자극에 대해 긍정적인 표정이라고 응답한 정도와 각 설문 척도 간의 관계를 Pearson 상관분석하였다. 결 과 : 몰핑 정서 자극에 대해 긍정적이라고 응답한 정도는 회복탄력성과 유의미한 정적 상관(r=0.331, p<0.05)을 보였다. 또한 몰핑 정서 자극은 긍정적 정서 척도인 PANAS(Positive)와도 유의미한 정적 상관(r=0.365, p<0.05)을 보였지만, 부정적 정서 척도인 PANAS (Negative)와는 유의미한 상관관계(r=-0.032, ns.)가 나타나지 않았다. 결 론 : 본 연구에서는 몰핑된 얼굴 표정에 대한 정보를 긍정적으로 처리하고 평가하는 과정이 회복탄력성과 관련되어 있다는 것을 확인 하였다. 이 연구를 통해 회복탄력성을 향상시키기 위한 긍정적인 정보 처리 능력의 임상적 가치를 확인하였다. Objectives : Resilience is the ability to maintain mental health in spite of adversity, and it is suggested that people with high resilience may have a strength in recognizing and evaluating other people's emotions positively. The purpose of this study is to explore the association between the ability to evaluate morphed facial expressions positively and resilience. Methods : The experiment for facial expressions evaluation using morphed software was conducted on 50 normal population living in Yong-in city, Gyeonggi-do. Participants were forced to choose whether the morphed facial expressions are positive or negative without time limitation. And then, resilience, positive emotion and negative emotion scale were confirmed by self-report questionnaire. The data of this study was analyzed by Pearson’s correlation test. Results : The number of responding positively to the morphed emotional stimulus showed a significant positive correlation with the resilience (r=0.331, p<0.05). In addition, the number of positive response showed a significant positive correlation with PANAS (Positive) (r=0.365, p<0.05), but a significant correlation with PANAS (Negative) did not appear (r=-0.032, ns.). Conclusion : In this study, we confirmed that the positively information processing and evaluation about morphed facial expressions is related to resilience. This results suggested the clinical value of positive information processing abilities to improve resilience.

Cathelicidin Frament, LL-37, Prime Hematopoietic Progenitor cells Through Up-regulating Glucose Uptake and AMPK Signaling

Jaehyung Jung,Ho Seon Park,Ok Kyung Choi,Jongwoo Joseph Park,Youjoo Tae,Ju Eun Oh,Hakmo Lee 한국실험동물학회 2013 한국실험동물학회 학술발표대회 논문집 Vol.2013 No.8

Long-term Effects of the Eradication of Helicobacter pylori on Metabolic Parameters, Depending on Sex, in South Korea

Park Jaehyung,Kim Nayoung,Kim Won Seok,Lim Seon Hee,Choi Yonghoon,Jo Hyeong Ho,Ji Eunjeong,Yoon Hyuk,Shin Cheol Min,Park Young Soo,Lee Dong Ho 거트앤리버 소화기연관학회협의회 2023 Gut and Liver Vol.17 No.1

Background/Aims: Helicobacter pylori (HP) infection is positively associated with metabolic syndrome (MS). However, the long-term effects of eradication therapy on MS and sex differences have not been thoroughly studied. We aimed to investigate the long-term effects of HP eradication on MS and sex differences. Methods: This study included 2,267 subjects who visited a tertiary referral center between May 2003 and May 2019. HP was diagnosed by histology, a Campylobacter-like organism test, and culture, and the subjects were prospectively followed up. The participants were categorized into three groups: HP uninfected, HP infected but non-eradicated, and HP eradicated. The baseline characteristics and changes in metabolic parameters after HP eradication were compared over a 5-year follow-up period. Results: Among 1,521 subjects, there was no difference in baseline metabolic parameters between the HP-uninfected (n=509) and HP-infected (n=1,012) groups, regardless of sex. Analysis of the metabolic parameters during follow-up among HP-uninfected (n=509), HP-non-eradicated (n=346), and HP-eradicated (n=666) groups showed that high-density lipoprotein (HDL) and the body mass index (BMI) increased after eradication, with a significant difference at 1-year of follow-up. In females, HDL increased after eradication (p=0.023), and the BMI increased after eradication in male subjects (p=0.010). After propensity score matching, the HDL change in female remained significant, but the statistical significance of the change in BMI in the male group became marginally significant (p=0.089). Conclusions: HP eradication affected metabolic parameters differently depending on sex. HDL significantly increased only in females over time, especially at 1-year of follow-up. In contrast, BMI showed an increasing tendency over time in males, especially at the 1-year follow-up.

Cost-effective multicast routings in wireless mesh networks with multiple gateways

Park, Jaehyung,Jung, Younho,Kim, Yong-Min Springer-Verlag 2016 Cluster computing Vol.19 No.3

<P>In order that multicast routing characteristics is reflected in wireless mesh networks, multicast routing metric is required for quantifying the multicast tree cost under wireless environments. This paper proposes a new multicast routing metric considering receiver's different characteristics of link quality on a wireless multicast channel as well as wireless multicast advantage. The proposed multicast-tree transmission ratio quantifying the multicast tree cost represents the product of the multicast transmission ratios of all nodes in the constructed multicast tree. In this paper, we also propose a wireless multicast routing which constructs the multicast tree by maximizing the multicast-tree transmission ratio in wireless mesh networks with multiple gateways and design the multicast routing protocol based on AODV protocol. Since the multicast tree by our wireless proposed routing algorithm contains the nodes having maximum multicast-node transmission ratio, our proposed multicast routing shows a higher delivery ratio and a lower average delay than original multicast AODV and the multicast routing with minimizing the forwarding nodes in its multicast tree. In comparison with other multicast routings, simulation results show that the proposed multicast heuristics maximizing the multicast-tree transmission ratio construct a cost-effective multicast tree in terms of its delivery ratio, average delay, and required network resources.</P>

A New Parallelization Scheme of Longest Prefix Matching based on Path-Compressed Tries

Jaehyung Park,Seok-Youl Kang,Byung-Chun Jeon,Yoo-Kyoung Lee 한국정보과학회 2002 한국정보과학회 학술발표논문집 Vol.2002 No.1

Microbial Diversity of Commercial Makgeolli and Its Influence on the Organoleptic Characteristics of Korean Rice Sourdough, Jeung-Pyun

( Jaehyung Park ),( Ji Sun Seo ),( Seul-ah Kim ),( So-yeon Shin ),( Jong-hyun Park ),( Nam Soo Han ) 한국미생물생명공학회(구 한국산업미생물학회) 2017 Journal of microbiology and biotechnology Vol.27 No.10

Sourdough is made by fermentation of dough by lactic acid bacteria (LAB) and yeast to improve bread properties like volume, flavor, and texture. A Korean traditional sourdough was made by fermenting rice flour with rice wine (makgeolli) and used to make sponge-like bread (jeung-pyun). The aim of this study was to investigate the microbial diversity of makgeolli products and their influence on the organoleptic quality of jeung-pyun. Three commercial makgeolli were tested for jeung-pyun production, with each product exhibiting varied dough swelling rates and organoleptic qualities, and among them, J-product was ranked highest in texture and taste. Microbial analysis of the three makgeolli also showed a big difference in their population and diversity. J-product had the highest LAB and yeast counts, and the predominant species were Lactobacillus casei, Lactobacillus brevis, Leuconostoc pseudomenteroides, and Saccharomyces cerevisiae. Using J-product, sourdough was fermented at 25°C, 30°C, and 35°C, and the microbial growth in and textural properties of jeung-pyun were examined by instrumental and sensory tests. At high temperature (35°C), the rates of dough swelling and acidification were fast due to rapid microbial growth mainly caused by LAB, resulting in a short leavening time and soft and sour jeung-pyun. Sensory tests showed consumer preference for the soft and mild-sour jeung-pyun. This study shows that LAB in makgeolli play key roles in production of jeung-pyun, influencing the textural and sensory properties. For the production of high-quality jeung-pyun, development of LAB starters with high gas productivity and low acidity and establishment of an optimal fermentation procedure for rice dough are necessary.

Laser marking technology on the optical materials

Jaehyung Park(박재형) 한국생산제조학회 2007 한국공작기계학회 춘계학술대회논문집 Vol.2007 No.-

웜홀 방식의 재귀 원형군 네트워크에서 완전 적응 최단 거리 라우팅의 성능 평가

박재형(Jaehyung Park),윤현수(Hyunsoo Yoon),맹승렬(Seung Ryoul Maeng) 한국정보과학회 1995 정보과학회논문지 : 시스템 및 이론 Vol.22 No.11

다중컴퓨터로 불리우는 분산 기억장치 다중프로세서는 여러개의 노드로 이루어졌으며, 각 노드 사이의 통신은 통신 채널을 통하여 메시지를 주고 받음으로써 이루어진다. 메시지 라우팅은 다중컴퓨터의 성능에 지대한 영향을 미친다. 본 논문에서는 재귀 원형군 G(2^m, 4)에서 교착상태와 라이브락 상태가 없는 라우팅 알고리즘을 제안한다. 제안한 라우팅 알고리즘은 메시지의 출발지에서 목적지까지의 모든 최단 경로를 허용하는 fully-adaptive minimal이며, 웜홀 스위칭 방식을 사용한다. 이 알고리즘은 실제 채널당 가상 채널의 갯수로, 재귀 원형군 G(2^m, 4)의 지름에 비례하는 [(3m-1)/4]만큼을 필요로한다. 이 방식은 기존의 방식과 비교할 때 적은 갯수의 가상 채널을 사용한다. 본 논문에서는 제안한 라우팅 알고리즘이 교착상태와 라이브락 상태를 발생시키지 않음을 증명하였으며, 컴퓨터 시뮬레이션을 통해 결정 라우팅 알고리즘에 비해 낮은 망 지연과 높은 처리율을 가짐을 보였다. Distributed memory multiprocessor, known as multicomputer, consists of many computing nodes that interact with each other by sending and receiving messages over communication channels between the nodes Efficient routing of messages is critical to the performance of multicomputers, In this paper, a deadlock- and livelock-free routing algorithm in Recursive Circulant C(2^m,4) is proposed The algorithm proposed in this paper is fully-adaptive minimal, i.e. all the shortest paths between the source and destination nodes are permitted for routing, and adopts the wormhole switching technique The proposed algorithm requires only [(3m-l)/4] virtual channels per physical channel that is proportional to the diameter of Recursive Circulant C(2^m,4) This is much smaller number of virtual channels compared to the previous design methodologies. We prove that the proposed routing algorithm is deadlock- and livelock-free. Simulation results show that the proposed algorithm has a low latency and a high throughput to the deterministic routing algorithm.

Gallotannin-Capped Gold Nanoparticles: Green Synthesis and Enhanced Morphology of AFM Images

Kim, Jaehyung,Yhim, Won Been,Park, Jong-Won,Lee, Sang-Hyeon,Kim, Tae Yoon,Cha, Song-Hyun,Kim, Hyun-Seok,Jang, Hong-Lae,Cho, Miyeon,Park, Youmie American Scientific Publishers 2016 Journal of nanoscience and nanotechnology Vol.16 No.6

<P>Gold nanoparticles (AuNPs) were synthesized by a green method using a plant secondary metabolite, gallotannin. Gallotannin was used as a reducing and capping agent to convert gold ions into AuNPs for the generation of gallotannin-capped AuNPs (GT-AuNPs). This synthetic route is ecofriendly and eliminates the use of toxic chemical reducing agents. The characteristic surface plasmon resonance of the GT-AuNPs was observed at 536 nm in the UV-visible spectra. The face-centered cubic structure of GT-AuNPs was verified by X-ray diffraction analysis. The majority of the GT-AuNPs had a spherical shape with an average diameter of 15.93 +/- 8.60 nm. Fourier transform infrared spectra suggested that the hydroxyl functional groups of gallotannin were involved in the synthesis of GT-AuNPs. The size and shape of nanoparticles can have a crucial impact on their biological, mechanical, and structural properties. Herein, we developed a modified anisotropic diffusion equation to selectively remove nanoscale experimental noise while preserving nanoscale intrinsic geometry information. To demonstrate the performance of the developed method, the ridge and valley lines were plotted by utilizing the principle curvatures. Compared to the original anisotropic diffusion and raw atomic force microscopy (AFM) experimental data, the developed modified anisotropic diffusion shows excellent performance in nanoscale noise removal while preserving the intrinsic geometry of the nanoparticles.</P>

확장된 기술수용모델(ETAM)을 적용한 홈트레이닝 기기 사용 의도에 관한 연구

박재형(Park, Jaehyung),이철원(Lee, Chulwon),김민정(Kim, Minjeong) 한국여가레크리에이션학회 2021 한국여가레크리에이션학회지 Vol.45 No.3

In this study, the purpose of using home training devices was analyzed for the public who are interested in the intention to use the home training equipment by using the extended technology acceptance model. A total of 314 responses were collected and analyzed to verify the hypothesis. SPSS and AMOS programs were used for data processing, and data were analyzed using frequency analysis, confirmatory factor analysis, reliability analysis, correlation analysis, and structural equation model analysis. The results of this study conducted on this basis are as follows. First, user reviews had a positive effect on perceived ease of use, perceived usefulness, and using intention. Second, perceived ease of use had a significant effect on perceived usefulness and using intention. Third, perceived usefulness had a significant static impact on using intention. The results of this study contribute to an in-depth understanding of the participants’ intention to use home training devices, and furthermore, it can be used in depth to explore and utilize home training as a leisure life and culture.