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Automatic Parking System using Background Subtraction with CCTV Environment
Jungseok Cho,Jinrak Park,Untae Baek,Donghyun Hwang,Seibum Choi,Soohyun Kim,Kyungsoo Kim 제어로봇시스템학회 2016 제어로봇시스템학회 국제학술대회 논문집 Vol.2016 No.10
In this paper, a new automatic parking approach that uses a surveillance camera is suggested. Many parking lots have surveillance cameras. Vehicle position, attitude, and parking space detection methods using a based on CCTV environment are introduced. An entire auto parking system is realized using a small experimental vehicle. Existing auto parking systems are primarily ADAS (advanced driver assistance systems) that use extra sensors such as external cameras, ultrasonic sensors, and so on. The authors suggest an automatic parking system that does not impose an economic burden on drivers. Instead, drivers can use an automatic parking system based on CCTV environment, a central process computer, and a communication method between the computer and the driver’s car.
우울 수준에 따른 가상멀미 경험이 가상현실 기반 신경인지과제 수행에 미치는 영향 : 고령집단을 중심으로
김인하(Kim, Inha)박정훈(Park, Junghun),이서정(Lee, Seojung),민성(Min, Sung),전주영(Jeon, Juyoung),조건우(Cho, Geonwoo),박혜연(Park, Haeyean),박다솔(Park, Dasol)박수현(Park, Soohyun) 한국재활심리학회 2021 재활심리연구 Vol.28 No.1
본 연구는 고령 집단에서 가상현실기반 평가 및 치료를 활용하는데 있어, 주요 장애물이 될 수 있는 가상멀미의 영향을 탐색하기 위해 진행되었다. 이 가운데서도 신경인지과제 수행 시, 우울감의 수준에따라 가상멀미가 과제수행에 미치는 영향을 탐색하고자 하였으며, 이를 확인하기 위하여 만 50세 이상성인 73명이 (1) 가상현실 기반 신경인지과제, (2) 가상멀미 수준과 우울을 측정하는 자기보고식 설문을 완료하였다. 연구 결과, 우울감이 클수록 가상현실 프로그램 시행에 따른 가상멀미 변화량이 커지는 경향을 보이며, 준임상 수준 이상에 해당하는 고우울 집단에서는 가상멀미가 가상현실기반 신경인지과제 수행에 유의한 영향을 미치는 것으로 나타났다. 저우울 집단에서는 이러한 영향이 유의하지 않았다. 이를 통해 준임상수준 이상의 고우울 집단에서는 지각된 가상멀미 수준이 가상현실기반 신경인지과제 수행에 부정적 영향을 미칠 수 있음이 시사되었다. 이러한 결과는 향후 고령의 우울집단에서 가상현실 치료를 활성화하기 위해, 주요 부작용인 가상멀미의 영향을 확인했다는 점에서 의의가 있으며, 이를 비롯한 본 연구의 의의와 한계점 및 후속 연구에 대해 논의하였다. This study was conducted to explore the effects of simulator sickness, which can be a major obstacle in the use of virtual reality-based evaluation and treatment in the elderly group. Also, the effect of depression level on simulator sickness and a virtual reality (VR)-based neurocognitive task performance was investigated. Seventy-three participants over the age of 50 years completed the (1) VR-based neurocognitive task and (2) self-report questionnaires measuring simulator sickness, and depressive symptoms. The results indicated that depression predicts the severity of perceived simulator sickness, and simulator sickness had a significant effect on the performance of the virtual reality-based neurocognitive task in a group with sub-clinical or clinical levels of depression. Based on the results, the implications, limitations and suggestions for future studies were discussed.
Park, Soohyun,Chang, Kwang Suk,Jin, Eonseon,Pack, Seung Pil,Lee, Jinwon Springer-Verlag 2013 Bioprocess and biosystems engineering Vol.36 No.1
<P>A new phosphoenolpyruvate carboxylase (PEPC) gene of Dunaliella salina is identified using homology analysis was conducted using PEPC gene of Chlamydomonas reinhardtii and Arabidopsis thaliana. Recombinant E. coli SGJS115 with increased production of malate and oxaloacetate was developed by introducing codon-optimized phosphoenolpyruvate carboxylase2 (OPDSPEPC2) gene of Dunaliella salina. E. coli SGJS115 yielded a 9.9 % increase in malate production. In addition, E. coli SGJS115 exhibited two times increase in the yield of oxaloacetate over the E. coli SGJS114 having identified PEPC2 gene obtained from Dunaliella salina.</P>
Purification and Characterization of Arylphorin of the Chinese Oak Silkmoth, Antheraea pernyi
Park, Snag-Bong,Kim, Jeong-Wha,Kim, Soohyun,Park, Nam-Sook,Jin, Byung-Rae,Hwang, Jae-Sam,Seong, Su-Il,Lee, Bong-Hee,Park, Eunju Korean Society of Sericultural Science 2003 International Journal of Industrial Entomology Vol.6 No.1
The arylphorin was purified from the pupal haemolymph of the Chinese oak silkmoth, Antheraea pernyi, and characterized physiologically and biochemically, The protein was purified by a simple preparative polyacrylamide gel electrophoresis (PAGE) and subsequent diffusive elution. The preparation was shown to be homogeneous by 7.5% native-PAGE. The native molecular weight of arylphorin was 450 kDa with a 80 kDa single subunit, suggesting hexamer, The protein contained high amounts (18.3%) of aromatic amino acids, phenylalanine (9.7%) and tyrosine (8.6%). Therefore, the protein was identified as a kind of a storage protein referred to as an arylphorin. The protein was stained by Schiff's reagent, suggesting a glycoprotein. The protein contained 4.9% (w/w) sugar and mannose and N-acetylglucosamine were major components. Also, degradation of the protein was begun by heat treatment at 90 for 20 minutes. These results showed that the A. pernyi arylphorin in the study is hexamer associated with the six subunits consisting of a 80kDa single subunit, and is different from that of Kajiura et al. (1998) in the subunit composition.
Park, Jong Yoen,Park, Soohyun 기본간호학회 2019 기본간호학회지 Vol.26 No.2
Purpose: The feasibility and differential effects of two music therapy methods (interventions with preferred music vs. classical relaxation music) were done to examine the effects on agitation and anxiety in patients weaning off mechanical ventilation. Methods: This pilot study was conducted using a crossover design. Six patients listened to preferred music choices and classical relaxation music. Anxiety scores were measured using the Richmond Agitation Sedation Scale (RASS), State-Trait Anxiety Inventory (STAI), and visual analog scale (VAS). Results: Patients showed a significant decrease in agitation and anxiety after both the preferred and classical relaxation music interventions. The difference in the effects of preferred music and that of classical relaxation music was not significant. As for feasibility, patients exhibited a change in agitated behaviors after the music interventions by not trying to take off medical devices and quietly listening to the music, and by smiling and moving lips along with the lyrics while listening. Conclusion: Music interventions which centered on either patients’ preferences or classical relaxation music to enhance relaxation, helped reduce agitation and anxiety during the mechanical ventilation weaning process.
Enhanced Incorporation of Gaseous CO2 to Succinate by a Recombinant Escherichia coli W3110
Soohyun Park,Hyeonsoo Kim,Sukhyeong Cho,Gwangro You,Han Bin Oh,Jun Hee Han,JIN WON LEE 한국생물공학회 2019 Biotechnology and Bioprocess Engineering Vol.24 No.1
Carbon dioxide (CO2) emissions are related to global warming. However, CO2 can be used as an abundant and cheap carbon source for production of valuable chemicals using carbon capture and storage technology. Here, the genes related to carbon flux toward pyruvate biosynthesis in E. coli were deleted to enhance the incorporation of CO2 for succinate production. The codonoptimized carbonic anhydrase gene (SP(-)HCCA) derived from Hahella chejuensis KCTC 2396 and the phosphoenolpyruvate carboxylase gene (ppc) of E. coli W3110 were co-overexpressed to enhance carbon flux toward oxaloacetate synthesis in E. coli. Finally, we constructed SGJS134, which shows the highest production of succinate derived from CO2 compared with other strains. SGJS134 produced approximately 6.5 mM succinate from CO2 and yielded approximately 13.0 mM succinate per dry cell weight. These results may be useful for enhancing the incorporation of CO2 for succinate production in E. coli. Additionally, the metabolic engineering method used in this study will propose the potential of E. coli to convert CO2 to valuable chemicals.