The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In the biomedicine domain, a large number of papers are published every day, which is crucial to search for the relevant answers for the user's query. However, documents are not exactly what the users want. Instead, snippets, small segments from the documents, are more proper to meet the requirement of the users. Hence, this paper proposes a biomedical snippet retrieval framework to exactly locate...
This paper presents a scheme of approximating cylindrical models using convolution surfaces and subdivision surfaces. Firstly, an inverse Catmul-Clark subdivision is utilized to approximate the cylindrical models. Then the subdivided mesh is evolved onto the target convolution surface-based shape to produce a natural blending at branches. The initial inverse subdivision reduce the evolution iterations...
Research over the last decade has developed a wide application of 3D models. Much of this work, however, is not related to quality evaluation of 3D color models. This paper presents a novel subjective quality evaluation model that can be used to compute the difference between an original 3D color model and the other processed one. Our model jointly takes into account human visual perception of color...
Cloud computing provides the possibility of a solution to the problems caused by the massive amounts of data. As an open source cloud computing platform, Hadoop has been widely used in the commercial. MapReduce model is one of the important parts of Hadoop, and it can support parallel computing and schedule tasks automatically. Because of these, it can improve the efficiency of the configuration while...
Emergency system denoted in this paper aims to harness natural disasters via investigating the situation of disasters and making contingency plans. Hence, integrating information of disasters from a complex distributed network is the foundation of the emergency system. This paper focuses on how to integrate information rapidly though multi-agent system technology. Based on this, we propose a hierarchical...
Networked air defense fire control simulation system featured with complicated interactions, varied system structure etc, and is usually faced with some difficulties in its development, such as the low capability of model reuse, the lack of regulations for model development and inflexible modification of federation. To overcome the difficulties, a framework in hierarchy of networked air defense fire...
In this paper, digital pre-distorter based on the memory polynomial model is utilized to compensate the nonlinearity of the Multi-Carrier TD-SCDMA RF power amplifiers (RFPA). Three-carrier TD-SCDMA signals with three different sub-frame configurations are used as test signals, a 47-dBm peak-envelope-power LDMOS power amplifier is designed to validate the performance of the pre-distorter. The digital...
This paper presents a surface reconstruction algorithm from unorganized point sets based on region-growing and Gabriel. It begins with computing the Gabriel graph of the sampling point sets, and then performs a region growing process to ‘grow’ into a triangulated surface from the Gabriel structure. Compared with the traditional approach based on Delaunay and region-growing, the proposed algorithm...
In this paper, we propose an efficient rule-based heuristic to solve asset-based dynamic weapon-target assignment (DWTA) problems. The main idea of the proposed heuristic is to utilize the domain knowledge of DWTA problems to directly achieve weapon assignment, without large number of function evaluations. We update the saturation states of constraints in the assignment process to guarantee the feasibility...
To solve the problem of moving object segmentation in video sequence, a new video moving object segmentation algorithm was proposed based on Kirsch edge operator. The detected edge is mainly analyzed for segmentation and motion vector field is taken as assistant information. Firstly, the motion vectors are processed by accumulation and median filer. Secondly, templates of Kirsch operators are decomposed...
The detection of region of interest (ROI) in medical images has played a very important role in computer aided diagnose. With respect to liver-focus pixels having weak textural and similar intensities with their neighborhood, a novel detection algorithm of abnormal regions in liver CT images has been proposed in this paper by visual attention model. Firstly, a set of statistical texture features for...
Cannonball dispersion evenness is the main parameter for the design and optimization of future air window. The key of solution of cannonball dispersion evenness is the computations of the biggest value and smallest value of a 2D continuous function, which has many maximum values and minimum values. Moreover, as it need to compute the biggest value and smallest value for many times in the design and...
In the research of antiaircraft system, how to make full use of the firepower units and cause maximum damage to enemy targets, is a key problem of firepower allocation. Based on the characteristics of the antiaircraft system, the description of firepower allocation for antiaircraft system is presented and the mathematical model is established. The calculational method of threaten estimation is given...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.