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Search Results: 1 - 10 of 30354 matches for " Mei Han "
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Exploring Competitive Strategies of China Ceramic Tile Industrial Cluster in Global Economy  [PDF]
Mei-Hor Lo, Dechang Han
Open Journal of Social Sciences (JSS) , 2014, DOI: 10.4236/jss.2014.23003
Abstract:

In this paper, we discuss the competitive paradigm between globalization and local development in the ceramic tile industrial cluster, based on the Porter’s theory in exploring the factors of the global competitiveness. We analysis the theory of cluster and competitive theory to compare two ceramic tile clusters in different contexts for tracing the mechanism and path constructed ceramic industry international competitiveness and strategy formation. In the study, we discuss what changes come into play addressing the radical changes in world markets, both for ceramic tiles and for surrounding ceramic tile supportive industries. These issues will be discussed with amount of literature reviews through the various perspectives to explore more comprehensive insight to China ceramic tile industry.

B Cells with Regulatory Function in Animal Models of Autoimmune and Non-Autoimmune Diseases  [PDF]
Mei Lin, Zuomin Wang, Xiaozhe Han
Open Journal of Immunology (OJI) , 2015, DOI: 10.4236/oji.2015.51002
Abstract: Although the identification of B cell subsets with negative regulatory functions and the definition of their mechanisms of action are recent events, the important negative regulatory roles of B cells in immune responses are now broadly recognized. There is an emerging appreciation for the pivotal role played by B cells in several areas of human diseases including autoimmune diseases and non-autoimmune diseases such as parasite infections and cancer. The recent research advancement of regulatory B cells in human disease coincides with the vastly accelerated pace of research on the bridging of innate and adaptive immune system. Current study and our continued research may provide better understanding of the mechanisms that promote regulatory B10 cell function to counteract exaggerated immune activation in autoimmune as well as non-autoimmune conditions. This review is focused on the current knowledge of BREG functions studied in animal models of autoimmune and non-autoimmune diseases.
Packed Supercritical Fluid Chromatography for the Analyses and Preparative Separations of Palm Oil Minor Components  [PDF]
Mei Han Ng, Yuen May Choo
American Journal of Analytical Chemistry (AJAC) , 2015, DOI: 10.4236/ajac.2015.68062
Abstract: This paper depicts a brief review on the applications of packed supercritical fluid chromatography (SFC) in palm oil analyses and purifications from early 1990s to date. Packed SFC has been used for the analyses of various palm oil components. The analytical separations have also been scaled up to preparative scale that leads to the recovery of high value components from palm oil. This review encompasses both analytical and preparative SFC in the oil palm processing.
Dynamic Bandwidth Allocation Based on Online Traffic Prediction for Real-Time MPEG-4 Video Streams
Yao Liang,Mei Han
EURASIP Journal on Advances in Signal Processing , 2007, DOI: 10.1155/2007/87136
Abstract: The distinct characteristics of variable bit rate (VBR) video traffic and its quality of service (QoS) constraints have posed a unique challenge on network resource allocation and management for future integrated networks. Dynamic bandwidth allocation attempts to adaptively allocate resources to capture the burstiness of VBR video traffic, and therefore could potentially increase network utilization substantially while still satisfying the desired QoS requirements. We focus on prediction-based dynamic bandwidth allocation. In this context, the multiresolution learning neural-network-based traffic predictor is rigorously examined. A well-known-heuristic based approach RED-VBR scheme is used as a baseline for performance evaluation. Simulations using real-world MPEG-4 VBR video traces are conducted, and a comprehensive performance metrics is presented. In addition, a new concept of renegotiation control is introduced and a novel renegotiation control algorithm based on binary exponential backoff (BEB) is proposed to efficiently reduce renegotiation frequency.
Dynamic Bandwidth Allocation Based on Online Traffic Prediction for Real-Time MPEG-4 Video Streams
Liang Yao,Han Mei
EURASIP Journal on Advances in Signal Processing , 2007,
Abstract: The distinct characteristics of variable bit rate (VBR) video traffic and its quality of service (QoS) constraints have posed a unique challenge on network resource allocation and management for future integrated networks. Dynamic bandwidth allocation attempts to adaptively allocate resources to capture the burstiness of VBR video traffic, and therefore could potentially increase network utilization substantially while still satisfying the desired QoS requirements. We focus on prediction-based dynamic bandwidth allocation. In this context, the multiresolution learning neural-network-based traffic predictor is rigorously examined. A well-known-heuristic based approach RED-VBR scheme is used as a baseline for performance evaluation. Simulations using real-world MPEG-4 VBR video traces are conducted, and a comprehensive performance metrics is presented. In addition, a new concept of renegotiation control is introduced and a novel renegotiation control algorithm based on binary exponential backoff (BEB) is proposed to efficiently reduce renegotiation frequency.
Two coloring problems on matrix graphs
Zhe Han,Mei Lu
Mathematics , 2015,
Abstract: In this paper, we propose a new family of graphs, matrix graphs, whose vertex set $\mathbb{F}^{N\times n}_q$ is the set of all $N\times n$ matrices over a finite field $\mathbb{F}_q$ for any positive integers $N$ and $n$. And any two matrices share an edge if the rank of their difference is $1$. Next, we give some basic properties of such graphs and also consider two coloring problems on them. Let $\chi'_d(N\times n, q)$ (resp. $\chi_d(N\times n, q)$) denote the minimum number of colors necessary to color the above matrix graph so that no two vertices that are at a distance at most $d$ (resp. exactly $d$) get the same color. These two problems were proposed in the study of scalability of optical networks. In this paper, we determine the exact value of $\chi'_d(N\times n,q)$ and give some upper and lower bounds on $\chi_d(N\times n,q)$.
Modeling of Slab Induction Heating in Hot Rolling by FEM  [PDF]
Ruibin Mei, Changsheng Li, Xianghua Liu, Bao Li, Bin Han
Engineering (ENG) , 2011, DOI: 10.4236/eng.2011.34041
Abstract: FEM (Finite Element Method) has been widely used to solve temperature in hot rolling. The heat gen-erating rate of electromagnetic field has been discussed in order to improve the efficiency and accuracy in the solution of induction heating. A new heat generating rate model was proposed and derived from the calculated results by FEM software in consideration of work frequency, source current density, and the air gap between induction coil and slab. The calculated distribution of heat generating rate in the skin depth by the model is satisfying and reliable compared with that of FEM software. Then, the mathematic model of the heat generating rate model is considered as the density of heat reservoir to solve the temperature in induction heating. Moreover, the temperature evolution of slab in induction heating from a hot rolling plant has been solved by the developed FE code and the calculated temperature has a good agreement with the measured value. Therefore, the heat generating rate model is suitable and efficiency to solve the temperature in induction heating by FEM.
A Comparative Study on Several Anti-Corrosion Materials for Power FGD System  [PDF]
Zhenyu Wang, Dongsheng Mei, Weitao Zhang, Enhou Han, Yushan Wang
Engineering (ENG) , 2011, DOI: 10.4236/eng.2011.36078
Abstract: In the study organic-inorganic hybrid composite, epoxy modified silicone coating and vinyl ester flake mastic were comparatively used as several anti-corrosion materials that provided protection for flue gas desulfu-rization (FGD). The relationship between curing conversion rate of hybrid polymer and temperature was investigated by differential scanning calorimeter (DSC). The adhesion strength, coefficient of thermal expansion and flame retardant properties of three anti-corrosion materials were measured and analyzed. A corrosion test in 8% H2SO4 and 5% HCl at temperature cycle of 40°C~ 160°C was applied to study corrosion resistance of several anti-corrosion materials. Gravimetric measurement and morphological observation of three materials before and after corrosion test were comparatively analyzed in the paper. The small weight change and good morphological structure of hybrid composite during corrosion test demonstrate that hybrid composite has better anti-corrosion properties than epoxy modified silicone coating and vinyl ester flake mastic.
Neuroprotective Effects of Ginkgo Biloba Extract (GbE) on Oxygen-Glucose Deprivation (OGD) in PC12 Cells  [PDF]
Chunli Mei, Xuelu Han, Jing Zhang, Ling Gao, Huimin Liu
Engineering (ENG) , 2013, DOI: 10.4236/eng.2013.510B030
Abstract:

Ischemic cerebrovascular disease is a global health problem. According to the World Health Organization, ischemic stroke is actually the most common cause of death in the world. Ginkgo biloba extract (GbE) is a traditional Chinese medicine for angina pectoris. Ginkgo biloba plays a role in expanding blood vessels, increasing coronary and cerebral blood flow, preventing platelet aggregation, inhibiting thrombosis, and improving the microcirculation. In the present study, we investigated the mechanisms involved in the neuroprotective effects of GbE in a model of hypoxic-ischemic brain disease. We used NGF(100 ng/ml for 6 days)and OGD(5% CO2and 95% N2, 1 mmol/l NaS2O4insugar-free DMEM for 16 h) to stimulate PC12 cells and convert them into neurons in order to establish an ischemia model. The results showed that PC12 cells transformed into cells that looked like neurons and that MAP2 was up-regulated in NGF-treated PC12 cells. Cell apoptosis was found to be up-regulated after NGF stimulation and OGD. The apoptosis rate after 16 hours of OGD was 19.44%. GbE (50ng/ml) reduces apoptosis rate to 11.35%. These results may help to show that NGF treatment can be combined with OGD to establish anin vitromodel of acute ischemic brain damage. In the present study, we find that GbE effectively increases the survival rate of PC12 cells and relieves OGD damage. These results suggest that GbE has the neuroprotective effects of ischemic brain damage.


A Numerical Model for Railroad Freight Car-to-Car End Impact
Chao Chen,Mei Han,Yanhui Han
Discrete Dynamics in Nature and Society , 2012, DOI: 10.1155/2012/927592
Abstract:
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