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Information Fusion Filter for Multi-rate Multi-sensor Systems
Jing Ma,Hao Jin,Tian Tian,Wei Zhang 보안공학연구지원센터 2015 International Journal of Multimedia and Ubiquitous Vol.10 No.1
This paper is concerned with the information fusion filtering problem for a class of multi-rate multi-sensor systems, where the system is described at the highest sampling rate and different sensors may have different lower sampling rates. Firstly, the local filters (LFs) at state updating points are proposed by using the LFs at measurement sampling points. Then, the distributed suboptimal fusion filter is obtained by the well-known covariance intersection fusion (CIF) algorithm. The filtering error variance matrices are derived to obtain the fusion weights. The computational cost is reduced since the cross-covariance matrices between any two local filters are avoided. Simulation example verifies the correctness and feasibility of the proposed algorithm.
Jing-Hao Cui,Qing-Ri Cao,Yun-Jaie Choi,Kyung-Hoon Lee,이범진 대한약학회 2006 Archives of Pharmacal Research Vol.29 No.8
Bifidobacteria-loaded alginate poly-l-lysine microparticles (bap microparticles) were prepared using an air atomization method and then freeze-dried. The viability of the bap microparticles was investigated as a function of the amount of the bifidobacteria cultures, and the addition of a yeast extract, cryoprotectants, antioxidants and neutralizer. The size of the bap microparticles with and without the bifidobacteria was 84.8±28.5 μm (mean±standard deviation) and 113.1±38.5 μm, respectively. The surface morphology was slightly ellipsoid and wrinkled regardless of the incorporating bifidobacteria. The viability gradually decreased with increasing freeze-drying time. Free-flowing powdered bap microparticles were obtained at least 12 h after freeze-drying the wetted slurry of bap microparticles. However, the particles tended to aggregate when either lactose or ascorbic acid was added. The addition of a yeast extract, cryoprotectants (glycerol and lactose), antioxidants (NaHSO3 and ascorbic acid) and neutralizer (Mg3(PO4)2) resulted in a significantly higher viability of the bifidobacteria in the bap microparticles after freeze-drying (0.34-1.84 log) compared with the culture alone.
Hao Jin,Jing Ma,Yun Li,Ming Zhao 보안공학연구지원센터 2015 International Journal of Multimedia and Ubiquitous Vol.10 No.2
The distributed fusion filtering problem is studied for multi-rate sampling stochastic singular linear systems with multiple sensors and stochastic multiplicative noises. The system is described at the highest sampling rate and different sensors may have different lower sampling rates. The white noise in measurement matrix is introduced to describe the stochastic disturbance. Firstly, based on decomposition in canonical form, the original singular system is transformed into fast and slow two subsystems. For the two reduced-order subsystems, the local filters (LFs) are given based on the “dummy” random variables. The cross-covariance matrices between any two local filtering errors are derived. Further, the distributed fusion filter weighted by matrices (FFWM) is obtained for the original singular system based on the well-known fusion algorithm in the linear minimum variance sense. Simulation example verifies the correctness and feasibility of the proposed algorithm.
Cui, Jing-Hao,Cao, Qing-Ri,Lee, Beom-Jin Informa Healthcare 2007 DRUG DELIVERY Vol.14 No.5
<P> Enhanced delivery of bifidobacteria and fecal changes were compared following multiple oral administrations of protected bifidobacteria-loaded alginate poly-l-lysine microparticles (bap-microparticles) and unprotected bifidobacteria cultures over a period of 1 month to healthy human volunteers as preliminary in vivo studies. When bap-microparticles were orally administered, enhanced delivery of bifidobacteria was achieved. The viability of the bifidobacteria was significantly increased ∼ 11.5-30 times (1.06-1.48 log cycles) during the ingestion period when compared with the bifidobacteria culture group (p < 0.05). However, other gut microflora such as bifidobacteria, enterobacteriaceae, lactic acid bacteria, and staphylococci in feces were not significantly different between the two groups. Encapsulated bifidobacteria resulted in more frequent defecation and decreased fecal viscosity.</P>
Cui, Jing-Hao,Cao, Qing-Ri,Choi, Yun-Jaie,Lee, Kyung-Hoon,Lee, Beom-Jin The Pharmaceutical Society of Korea 2006 Archives of Pharmacal Research Vol.29 No.8
Bifidobacteria-loaded alginate poly-l-lysine microparticles (bap microparticles) were prepared using an air atomization method and then freeze-dried. The viability of the bap microparticles was investigated as a function of the amount of the bifidobacteria cultures, and the addition of a yeast extract, cryoprotectants, antioxidants and neutralizer. The size of the bap microparticles with and without the bifidobacteria was $84.8{\pm}28.5\;{\mu}m$ ($mean{\pm}standard$ deviation) and $113.1{\pm}38.5\;{\mu}m$, respectively. The surface morphology was slightly ellipsoid and wrinkled regardless of the incorporating bifidobacteria. The viability gradually decreased with increasing freeze-drying time. Free-flowing powdered bap microparticles were obtained at least 12 h after freeze-drying the wetted slurry of bap microparticles. However, the particles tended to aggregate when either lactose or ascorbic acid was added. The addition of a yeast extract, cryoprotectants (glycerol and lactose), antioxidants ($NaHSO_3$ and ascorbic acid) and neutralizer $(Mg_3(PO_4)_2)$ resulted in a significantly higher viability of the bifidobacteria in the bap microparticles after freeze-drying (0.34-1.84 log) compared with the culture alone.
방한 중국인의 온라인 여행 예약 서비스 사용의도에 미치는 영향 요인에 대한 연구
?景昊(Jing Hao Han),권혁진(Hyuk Jin Kwon),김동수(Dongsoo Kim) 한국전자거래학회 2013 한국전자거래학회지 Vol.18 No.4
최근 한국을 방문하는 중국 여행객이 점차 늘어나면서 한국 방문을 위해 온라인 여행예약 서비스를 이용하는 중국인이 증가하고 있다. 또한 중국에서 온라인 여행예약 서비스의 성장속도는 매우 빠른 추세를 보이고 있다. 따라서 여행 산업에서의 e-비즈니스를 발전시키기 위해 방한 중국 여행객의 온라인 여행예약 서비스 사용의도에 영향을 미치는 요인을 연구할 필요성이 있다. 본 논문은 기술수용모델을 기반으로 새로운 연구모형을 생성하였는데, 지각된 위험성, 서비스 요인, 온라인 리뷰 및 사용만족도를 포함하였고, 한국을 방문하는 중국 여행자들의 온라인 여행예약 사용의도에 영향을 미치는 요인들을 분석하였다. 분석 결과에 따르면 지각된 유용성, 지각된 용이성, 지각된 위험성이 온라인여행 예약에 대한 주요영향요인으로 나타났다. 또한 이러한 분석 결과를 토대로 한국 여행 상품을 판매하는 중국의 온라인 여행 예약 사이트의 문제점을 개선하고 발전시킬 수 있는 실용적 방법을 제시하였다. As visiting of Chinese tourists to Korea have increased gradually, Chinese people who use online travel reservation services for their visits to Korea have increased accordingly. In addition, the growth of the online reservation services in China is very rapid. Therefore, it is necessary to study the factors affecting the Chinese tourists’ intention to use the online travel reservation services in order to advance e-business in the travel industry. This paper presents a new research model based on Technology Acceptance Model (TAM) including perceived risk, service factors, online reviews and user satisfaction. Also, it analyzes factors affecting the Chinese tourists’ intention to use the online travel reservation services. The results of this study show that the key influencers of the online travel reservation services are perceived usefulness, perceived ease, and perceived risk. Additionally, based on these results, this paper proposes practical suggestions to solve the existing problems and improve online travel reservation websites in China.