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Large scale optimization is a very challenging task in optimization area. The variable interaction in non-separable problems is a primary source of performance loss, especially for large scale problems. Cooperative Coevolution framework is a popular approach to deal with large scale optimization. It is based on a divide-and-conquer manner. This paper proposes a novel algorithm called DISCC to tackle...
Recently cloud computing technology has gained its popularity on research and development for petroleum explorations. The advances of cloud computing offer flexibility of computing power and storage capacity, provides beneficial technology for this application domain. For instance, the cloud computing technology can effectively reduce the complexity of information collection and control time in the...
Securing provenance has recently become an important research topic, resulting in a number of models for protecting access to provenance. Existing work has focused on graph transformation mechanisms that supply a user with a provenance view that satisfies both access control policies and validity constraints of provenance. However, it is not always possible to satisfy both of them simultaneously,...
High-energy radiation beam is used in radiotherapy to kill the pre-located cancerous cells. No matter how accurately the body is positioned, or which of the chest or abdominal breathing method is used, the cancerous site often moves with the breath. Such motion artifact is an unpredictable factor during the radiotherapy, and introduces risks in damaging surrounding normal tissue. Our previous study...
Network performance management need to monitor, analyze and record several of performance indexes in order to find out the switch happens or potential danger. This paper briefly introduced the goals of network performance management and basic functions, and network performance analysis based on SNMP including the port status analysis, port flow analysis and equipment resources utilization analysis,...
In order to solve the problems such as poor data storage efficiency, data security and reliability, low resource utilization and high input costs existing in current cloud storage, an Hadoop-based efficient economic cloud storage system is proposed. The techniques of Hadoop, an efficient resource scheduling method and a probabilistic redundant scheduling are presented for the system to efficiently...
In this paper, we study the achievable rate regions of broadcast-relay-broadcast channels. The source broadcasts information to the users. A number of parallel relays are used to assist users. Each relay receives information from the source and forwards information to users. The relays also broadcast the forwarded information to all users. Achievable rate regions for broadcast-relay-broadcast channels...
Aiming at a series of problem such as low efficiency, a greate deal of maintenance and so on of radio and TV transmission for the current total station. The remote control system of transmitter based on the embed web is designed. The control order of transmitter is sended by the client, and the running state of transmitter is feedbacked by the internet. According to the system functional requirement,...
A key problem of relational database is to aggregate different values of the same object and find the first k objects with highest overall values. Many sequential algorithms have been proposed to solve this problem. In this paper, we propose a new parallel algorithm using symmetry breaking strategy. New algorithm is proved to be instance optimal. Experiment results on both synthetic and real data...
According to the problem of graph cuts matching algorithm that lots of false matches appears in weak texture area, an improved graph cuts matching algorithm for dense matching is proposed in this paper. First, corner point detection and matching are made between stereo image pairs, and false matches are eliminated by relaxation algorithm and LMeds algorithm. Secondly, triangulate partitioning of discrete...
This paper proposes a solution of filtering garbage information, in order to solve the problem of dynamic delivery of documents. The solution balances the technique of Black and White List Spam Filtering, as well as the advantages and disadvantages of and Bayesian Algorithm. It creates the Bayesian Model based on the analysis of probability distributions of Junk key words, as well as design and implement...
Computer Application Fundamental Course is a basic course for students in universities, and is a leading course of learning computer programming language. So teaching effectiveness is very important for students. Considering a number of issues, such as a computer uneven level of college freshmen, teaching the content of complex, high precision operation, and so on, this paper propose the teaching...
We propose a public key homomorphism in real domain based on a modified ElGamal. It can encrypt addition, subtraction, multiplication, and division operation in real domain. It solves all problems in Xing et al.psilas method based on Lee et alpsilas homomorphism and can be applied in many applications.
This paper presents a distributed fermat-point range estimation strategy, which is important in the moving sensor localization applications. The fermat-point is defined as a point which minimizes the sum of distances from three sensors inside a triangle. This point is indeed at the trianglepsilas center of gravity. We solve the problems of large errors and poor performance in the bounding box algorithm...
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