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In order to make the electromechanical actuator have the ability to adapt to the irregular installation space of high speed aircraft and the great dynamic characteristics, an adjustable actuator based on slider-crank structure was proposed and its transmission characteristics were studied. Firstly, the uniform nonlinear transmission ratio model is obtained respectively by applying speed synthesis...
Aiming at the nonlinear transmission problem resulting from movement conversion of line transmission products in aircraft electric serve system, in order to define the serve system states all the time, and then improve the precision of the mathematical model. With fork structure and rocker arm structure as the research objects, firstly, applying speed synthesis theory and structure force balance theory,...
User influence can be described as power — the ability of a person to influence the thoughts or actions of others. In this paper, we investigate the attributes of 244,175 users and the content of their messages, and they are from Sina Weibo which is one of the most notable micro-blogging services. Our first insight is to quantify the influence of individuals within a period of time by using a novel...
A novel algorithm for the human activities recognition based on the Poisson images and via bidirectional two-dimensional principal component analysis (2DPCA) is presented in this note, where the Poisson images are defined by solving the Poisson equations to re-interpret the motion accumulation image (MAI). More precisely, firstly, object detection based on the Gaussian Mixture Model (GMM) is applied...
Cloud computing is a promising technology, where the infrastructure, developing platform, software and storage are delivered as a service. With the development of cloud computing, more and more cloud service providers emerge. However, there are no metrics can be referred to compare these providers, so it is difficult for cloud consumers to select the most reliable providers or resources. Thus we present...
The paper analyses the load imbalance problem and the QoS-based fault-tolerant scheduling algorithm in Grid Resource Scheduling, and proposes a new scheduling algorithm based on the priority of a task-based parameters of Qos constrained scheduling strategy. The method is based on using the generalized stochastic Petri nets with inhibitor arc to establish the grid scheduling model and improve the Min-Min...
In this paper, we propose an approach for teaching method of computer graphics course that has the benefit of offering simple and interesting study. The approach aim at improving undergraduate student's practical ability and comprehensive ability, which only need we change the teaching method a little. We illustrate this idea by presenting a three dimension (3D) tree modeling case, which give some...
In this paper, we propose an approach for generating three dimension (3D) models of trees base on fractal idea that has the benefit of offering automatically and interactively modeling. The approach can generate 3D geometry tree using botanical knowledge and the fractals, can automatically generate photorealistic tree in real-time, also provides the capability for the user to control shape of the...
In this paper we report on high performance data transfer and ingestion design carried out in a scientific workflow project to support Southern California Earthquake Center (SCEC) petascale simulations on TeraGrid (TG), which is conducive to utilize the grid resource to pipeline data pre- and post-processing in this workflow simulation. We develop an enhanced prototype framework that brings together...
The image segmentation based on Markov Random Field (MRF) tries to find the maximum a posterior (MAP) global optimal solution, which describes image data relations by local correlations. Comparing with the Simulated Annealing (SA) that is used in the canonical MRF, Genetic Algorithm (GA) has been applied into the optimization computation. Currently the weights of energy function and conditional probability...
Simulating the motion of realistic, large, dense crowds of pedestrian is still a challenge for computer graphics communities. The previous main methods based individual research, in which each individual have alone plans for itself and hence. The large groups' simulation is difficult because exhibit behavior of enormous complexity and subtlety. In this paper, we improve dynamic continuum theory for...
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