In this paper, we introduce a Trust Topology Control algorithm(TTCA) based on Ant Colony method that adapts the ants intelligence to control the topology of mobile ad hoc wireless networks. Nodes exchange ants to dete...
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In this paper, we introduce a Trust Topology Control algorithm(TTCA) based on Ant Colony method that adapts the ants intelligence to control the topology of mobile ad hoc wireless networks. Nodes exchange ants to determine the trust information. The trust information is composed of node energy and node Euclidean distance between neighbors. Then they adjust their transmission power to the appropriate level according to the provide trust. This paper proposes a novel model that integrated the energy consumption and trust evaluation and implements TTCA Based on this model. The simulation of TTCA sheds a light on the joint energy-aware and trust effect on the survivability metrics such as network connectivity, residual node energy, packet deliver rate, etc. Results demonstrate the TTCA can achieve good network survivability.
This paper introduced an apple quality detection and specie identification system based on multi-spectral imaging. Under an international mixed light illumining, system can capture red, green and infrared images of ap...
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This paper introduced an apple quality detection and specie identification system based on multi-spectral imaging. Under an international mixed light illumining, system can capture red, green and infrared images of apples at the same time. A software programmed based on Matlab 6.5.1 is used for image processing to complete the detection of quality and specie. According to processing results, the subtotals and classification are made into grading standards. These can be quickly and easily applied to the automation of agriculture fruit grading system. In the experiment, some most common apples including Fuji apple, Red delicious apples, Green apples, Gina Apple's were detected for quality and variety. Accuracy rate can be more than 90%.
With the rapid development of computer technique and network technique,traditional teaching methods is undergoing huge transformation,all kinds of teaching methods emerge in endlessly,web-based teaching-as the cosset ...
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With the rapid development of computer technique and network technique,traditional teaching methods is undergoing huge transformation,all kinds of teaching methods emerge in endlessly,web-based teaching-as the cosset of modern teaching method,Is injecting new vitality and vigor to modern *** paper established web-based teaching resource platform refer to traditional teaching methods combining web-based teaching based on actual situation of hardware and software in college,studied the web-based teaching *** practice proved that the organic combination of traditional teaching methods and web-based teaching,Can greatly promote the improvement of teaching quality and students' learning effect.
In order to achieve high-speed, real-time video image processing requirement, en embedded system is designed, based on the high-performance DSP chip and the H.264 video coding standards. The system, written by C langu...
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In order to achieve high-speed, real-time video image processing requirement, en embedded system is designed, based on the high-performance DSP chip and the H.264 video coding standards. The system, written by C language in CCS3.1 for achieving H.264 compression algorithm and DSP/BIOS integrated development environment, through a combination of hardware and software, stored the data by using EDMA high-speed channel to optimize storage speed, then to improve data processing speed of about twice and have achieved a efficiency, real-time DSP system.
Aiming at the problems caused by hasty increasing of server's quantity, this paper presents a virtual server environment constructed based on Citrix Xen Server and integrates all existing server resources, and app...
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Aiming at the problems caused by hasty increasing of server's quantity, this paper presents a virtual server environment constructed based on Citrix Xen Server and integrates all existing server resources, and applies in the server deployment of the information center of Tianjin public security bureau and fire service department. The new scheme can improve the utilization rate of server greatly and lower the investment of hardware, and meanwhile reduce the cost of operation and maintenance effectively.
Distance education is the most important part of modern education ideas, and the experiment manipulation technique is the key factor which reflects the more perfect of distance education mode. In this paper, multi-tie...
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Distance education is the most important part of modern education ideas, and the experiment manipulation technique is the key factor which reflects the more perfect of distance education mode. In this paper, multi-tier distributed virtual laboratory system based on CORBA/JAVA is given. an overview on the virtual laboratory based on distributed measurement and control system is given. The fundamental aspects concerning both the hardware and software to design the distributed virtual laboratory are examined. Emphasis is devoted to innovative criteria and the requirements arising from the increasing application of the virtual laboratory in e-learning.
With the development of computer science, large-scale distributed simulation is becoming mature. As an outstanding network simulation software, OPNET can simulate on single machine. In order to be one of large-scale d...
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With the development of computer science, large-scale distributed simulation is becoming mature. As an outstanding network simulation software, OPNET can simulate on single machine. In order to be one of large-scale distributed simulation,it need to be controlled. HLA can construct new complicated simulation applications with the reusable simulation module conveniently according to communication simulation *** it's necessary to study the modeling of the mechanism and the simulation based on the steps. The Controller and OPNET federates is proposed. The parameters of OPNET can be changed and the federation time can be *** results verify that the method is feasible, the method could make contribution to construct the large-scale military simulation applications.
UPnP is a universal plug and play technology which is widely used in the digital family network. The UPnP security ceremonies expend the UPnP technology to meet the important security requirement. This paper introduce...
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UPnP is a universal plug and play technology which is widely used in the digital family network. The UPnP security ceremonies expend the UPnP technology to meet the important security requirement. This paper introduces a formal method named the Petri Net, using its advantage such as intuitive graphical representation and rigorous mathematical theory to model the security control of the UPnP security ceremonies. This paper simulates the security control in actual security system, using occurrence step and transition sequence of Petri Net model to analyze the accessibility of model and verify the non-repudiation and security of system.
After launching of TerraSAR-X, space-borne SAR image with high spatial resolution of 1–2 meter is considered as one of important data source for modelling and monitoring of urban areas. The buildings in urban regions...
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After launching of TerraSAR-X, space-borne SAR image with high spatial resolution of 1–2 meter is considered as one of important data source for modelling and monitoring of urban areas. The buildings in urban regions are important infrastructures to characterize SAR backscatter and interferometric phase in SAR interferometry. The shadow and layover are more prominent in urban areas due to building structure (Figure 1). The InSAR phase in layover regions at buildings shows the typical shape referred as “front-proch” shape (Burkhart, 1996). After detecting some of meaningful phase signal related with building height in layover regions, interferometric phase analysis at building location was investigated by Thiele et al. (2007a and 2007b). To increase our understanding on interferometric phase of building structure we used seven spotlight mode TerraSAR-X SAR data and LIDAR DSM over Daejeon city. Using LIDAR DSM and TerraSAR-X sensor parameters including satellite positions, range/azimuth resolution, sensor's wavelength, etc., interferometric phase and amplitude image were simulated from the new algorithm for high resolution DSM and SAR system proposed by Kim and Yoon (2010) as well as conventional software of GAMMA. For change detection, phase profile signal constructed from LIDAR DSM was subtracted from real interferometric phase in TerraSAR-X interferogram (Figure 2). The performance comparison in terms of the accuracy of change detection in urban area will be addressed through the analysis of the TerraSAR-Xs differential interferograms.
Electric wheelchair navigation is based on A strategy for fuzzy logic. The main features of the electric wheelchair are to navigate freely in an unknown environment and avoid the other objects as obstacles. A combinat...
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Electric wheelchair navigation is based on A strategy for fuzzy logic. The main features of the electric wheelchair are to navigate freely in an unknown environment and avoid the other objects as obstacles. A combination of ultrasonic sensors is used to facilitate navigation and obstacle avoidance. The fuzzy behavior producer is embedded in an 8-bit chip. The control software implements behavior-based artificial intelligence. The obstacle avoidance behaviors are successfully implemented by formulating a set of fuzzy rules.
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