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A Study of Data Interoperability System using DBaaS for Mobility Handicapped
권태우,이종용,정계동 한국인터넷방송통신학회 2019 International Journal of Internet, Broadcasting an Vol.11 No.1
As the number of "Mobility Handicapped" increases, the incidence of "Mobility Handicapped" traffic accidents is also increasing. In order to reduce the incidence of traffic accidents in the "Mobility Handicapped", a service providing system for "Mobility Handicapped" is required. Since these services have different data formats, data heterogeneity occurs. Therefore, the system should resolve the data heterogeneity by mapping the format of the data. In this paper, we design DBaaS as a mobility handicapped system for data interoperability. This system provides a service to extend the flashing time of the traffic lights according to the condition of "Mobility Handicapped" on the occurrence of a fall or a crosswalk in a crosswalk where there is a risk of a traffic accident. These services can reduce the incidence of traffic accidents in "Mobility Handicapped".
권태우,이대표,이종용,정계동 한국인터넷방송통신학회 2018 International Journal of Internet, Broadcasting an Vol.10 No.3
The majority of existing falling recognition techniques provide service by recognizing only that the falling occurred. However, it is important to recognize not only the occurrence of falling but also the situation before and after the falling, as well as the location of the falling. In this paper, we design and propose the falling notification service system to recognize and provide service. This system uses the acceleration sensor of the smartphone to recognize the occurrence of a falling and the situation before and after the falling. In order to check the location of falling, GPS sensor data is used in the Google Map API to map to the map. Also, a crosswalk map converted into grid-based coordinates based on the longitude and latitude of the crosswalk is stored, and the locations before and after falling are mapped. In order to reduce the connection speed and server overload for real-time data processing, fog computing and cloud computing are designed to be distributed processing.
Cyclohexa-2,4-dien-1-one 화합물의 aromatization 메카니즘 연구
권태우 慶星大學校 1999 論文集 Vol.20 No.2
Treatment of Cyclohexa-2,4-dien-1-one derivative 4 with 10% HCl in aqueous solution gave 1-(3,5-dimethyl-4-hydroxy)phenyl acetic acid, 5 in 93.5% yields. Transformation was identified by melting point, ?H NMR and IR spectrum. The step-by-step mechanism of this reaction was proposed. Clearly loss of CH?=S?CH? was involved in the reaction to give 1-(3,5-dimethyl-4-hydroxy) phenyl acetic acid, 5.
오미자 부탄올 분획물이 고지혈증이 유도된 생쥐의 지질대사 및 간조직 유전자 발현에 미치는 영향
권태우,김영균,김경민 대한한방내과학회 2018 大韓韓方內科學會誌 Vol.39 No.6
The berries of Schisandra chinensis (Schisandra fructus) are given the name Omiza in Korean (五味子), which translates as “five flavor fruit" because they possess all five basic flavors in Korean traditional herbal medicine: salty, sweet, sour, pungent (spicy), and bitter. It is used as a remedy for many ailments: to resist infections, increase skin health, and cure insomnia, coughing, and thirst. This study was designed to investigate the effects of Schisandra fructus butanol fraction (SFB) on serum lipid levels in hyperlipidemic mice. In this experiment, effects on total cholesterol, HDL-cholesterol, and triglyceride in serum were measured. In our results, SFB did not affect weight gain in hyperlipidemic mice. Oral administration of SFB lowered levels of total cholesterol and triglyceride, which were elevated by induction of hyperlipidemia. Finally, administration of SFB regulated changes in gene expression which were related to cell growth and differentiation.
Design of Cloud-based Context-aware System Based on Falling Type
권태우,이종용,정계동 한국인터넷방송통신학회 2017 International Journal of Internet, Broadcasting an Vol.9 No.4
To understand whether Falling, which is one of the causes of injuries, occurs, various behavior recognition research is proceeding. However, in most research recognize only the fact that Falling has occurred and provide the service. As well as the occurrence of the Falling, the risk varies greatly based on the type of Falling and the situation before and after the Falling. Therefore, when Falling occurs, it is necessary to infer the user's current situation and provide appropriate services. In this paper, we propose to base on Fog Computing and Cloud Computing to design Context-aware System using analysis of behavior data and process sensor data in real-time. This system solved the problem of increase latency and server overload due to large capacity sensor data.
IP-RFID를 활용한 연안해상교통관제시스템에 관한 연구
권태우,최형림,박병권,이강배,이창섭,박용성 한국항해항만학회 2009 한국항해항만학회 학술대회논문집 Vol.2009 No.공동학술
현재 우리나라의 연안해상교통관제는 연안해역의 관제, 수색 및 구조지원, 선박통행관제 수단을 제공하고 하기 위해 AIS(Automatic Identification System)와 레이더 시스템을 활용하고 있다. 하지만 AIS의 경우 고가의 장비로 소형선박에 설치가 용이하지 않은 실정이며 레이더를 활용한 소형선박 관제 시 Target Swapping 현상과 거리와 크기에 의한 탐지성능 변화 등의 문제점으로 소형선박의 위치를 제대로 파악하지 못하여 사고발생의 큰 비중을 차지하고 있어 방지대책이 필요한 실정이다. 이러한 문제를 해결할 수 있는 방안으로서 본 연구에서는 IP-RFID 기술을 활용한 연안해상교통관제시스템의 적용방안을 제시하고자 한다.
Molecular Dynamics Simulation Studies of Mid-Size Liquid n-Alkanes, C12–C160
권태우,이송희 대한화학회 2015 Bulletin of the Korean Chemical Society Vol.36 No.4
In this study, we report the results of molecular dynamics simulations (MD) for model systems of mid-size liquid n-alkanes (C12–C160) at several temperatures (~2700 K) in canonical ensembles to calculate structural and dynamic properties (viscosity η, self-diffusion constant D, and monomeric friction constant ζ). For the small n-alkanes for n ≤ 80, the chains are clearly R e e 2 / 6 R g 2 ≥ 1 , which leads to the conclusion that the liquid n-alkanes are far away from the Rouse regime, but for the n-alkanes for n ≥ 120, the chains are R e e 2 / 6 R g 2 ∼ 1 and they are Gaussian. It is found that the long chains of these n-alkanes at high temperatures show abnormalities in density, viscosity, and monomeric friction constant. The mass and temperature dependences of structural and dynamic properties (η, D, and ζ) are discussed.
Synthesis of Oligoquinoline Dendronized Fullerenes for Potential Use in Organic Photovoltaic Devices
권태우,Samson A. Jenekhe 대한화학회 2012 Bulletin of the Korean Chemical Society Vol.33 No.8
New C60 fullerenes derivatives [G1]-C60 (1) and [G2]-C60 (2) comprising of phenylenevinylene bridges and phenylquinoline peripheral surface groups were synthesized by 1,3-dipolar cycloaddition reaction of fullerene C60 with azomethine ylide in situ generated from [Gx]-CHO dendrons (x = 1 and 2) and sarcosine.