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.
The Clarke and Wright's savings method is a classical and widely used heuristics for the Vehicle routing problem(VRP). It is an effective method which reaches a reasonably good solution for small and medium size problems. For large-scale VRP, more complex heuristics are developed by different scholars. In this paper, an improved savings method has been proposed based on modification the rules of forming...
This Proxy signature has been one of the hot spot in cryptography research as it can delegate the signing right of the original signer to the proxy signer. Therefore, it is applied in many areas such as mobile networks, distributed systems, control systems and other some information systems. Recently, many proxy signature schemes with special properties have been proposed. However, most of them is...
Aiming at DNA encoding sequences design, a micro-genetic algorithm (MGA) is proposed by introducing a sharing function based on similarity and H-measure of DNA sequences. In the algorithm, six design criteria are adopted and four genetic operators are applied. Compared with the previous results, the algorithm can get better DNA sequences and improve the computational efficiency.
Along with the continuous improvement of various properties of green building, the amount of data is more and more big. The operation and maintenance of the green buildings need to use these data to analyze and make decisions, and the premise of the data analysis is that the data collected by each system is accurate. In this paper, the data in the PV power generation system and the air conditioning...
In this paper, a Fast Fourier Analysis (FFA) with electroencephalogram (EEG) classification based brainwave controlled wheelchair is constructed. This wheelchair is directly controlled by the brain. Thus, it does not require physical feedback from the user. This project is aimed to improve the mind power. It is known as the focusing strength of the brain. By increasing the usage and focusing strength...
An important advantage of cognitive radio is its ability to use the licensed frequency spectrum which is being utilized by the primary users. CR has two major roles viz. sensing and throughput optimization. In contrary to conventional methods of sensing viz. cyclostationarity, matched filter detection, maximum to minimum eigen value method etc., spectrum sensing has been improved by implementing Peak...
Aiming at the network congestion of wireless sensor networks causing the problem of network quality of service reduced drastically, the paper proposes an improved ant-colony routing algorithm based on link weights. The algorithm by analyzing the factors of available bandwidth, transmission delay, which impacts link-state, to calculates the link weights and adjusts the size of the pheromone, the current...
RFID applications are used in the Internet of Things (IoTs) which uses multiple readers to read the IDs of multiple tags and form the RFID network. In such a network, unguarded reader deployment may generate over-crowded readers, cause interferences. The deployment is crucial for RFID system performance Radio Frequency Identification (or RFID) tags have seen its wide range of applications in the recent...
This paper introduces a new combine of Memetic particle swarm optimum (MPSO) and beam-space oblique projection operator method suitable for dealing with direction of arrival (DOA) under a multipath environment. Generally, oblique projection operator is applied to project measurements onto a low-rank subspace along a direction that is oblique to the subspace and it enhance signals while nulling interferences...
Artificial Bee Colony (ABC) algorithm is a widely used optimization algorithm. However, it is good in exploration but poor in exploitation. To improve the optimization performance of ABC algorithm, two novel search mechanisms served as the search equations are proposed. Firstly, the improved algorithm integrates the information of previous best solution into the search equation in the onlookers to...
In modern Beidou satellite communications receivers, a simple pseudo-code tracking loop has been unable to meet pseudo-code synchronization in high dynamic, strong interference environments. In such environment, the traditional combinations cannot make pseudo-code tracking loop to achieve optimal performance, thus the integrated navigation has become a development direction. In this paper, an error...
In this paper, a newly robust control scheme that contains an enhanced smith predictor is proposed to adaptively estimate and identify control law on line to reply to the time-varying network induced delays. A control sequence that contains a series of control signals is generated from a queue of possible future time delays at the controller node and the final option on which control signal is selected...
The inertial navigation working mode with Doppler Velocity Log (DVL) assisted has been frequently used in marine carriers. However, it is difficult to correct the system position error and heading angle error in this mode. Therefore an inertial/PLBL/polarized-light integrated navigation method has been designed by investigating the PLBL (Pseudo Long Base Line) acoustic localization algorithm and the...
In this work, we propose clique-first adaptive routes (CFAR) for high-performance internet of things (IoT) networks. In the beginning, CFAR classifies IoT to construct a set of clique class. Second, it sets a class of path for each clique. Third, it calculates executing time for first path of first clique to determine each performance. Next, computing execution time for the rest of paths of first...
In the technology of crack detection, the traditional Canny algorithm uses fixed spatial scale coefficient of Gauss filter and empirical values of the high and low thresholds, and it has defective in self-adaptability because it is unable to correct parameters according to the actual image. This paper proposes a method based on adaptive Canny algorithm and iterative threshold segmentation algorithm...
Based on the linear prediction (LP) property of sinusoidal signals, a novel autocorrelation approach for a single-tone sinusoidal signal emerged in Gaussian white noise is proposed. Firstly, a new closed-form autocorrelation expression is derived that it contributes more to frequency estimation than conventional autocorrelation expressions, then, inspired by RIM estimator, we propose a novel estimator...
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.