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.
Tag Authentication is an essential issue in RFID system which is wildly applied in many areas. Compared to the per-tag-based authentication, the batch-mode authentication has better performance for complex applications. However, many existing batch authentication protocols suffer from security and privacy threats, low efficiency problem or high communication and computation cost. In order to solve...
People with different personalities see a problem from several perspectives and make different decisions in a software project. Therefore, some researchers have associated software personnel's psychological personality types with the various tasks in recent years. But which psychological personality model is best suited to software engineering field has not been examined fully. This article discusses...
To make the tampered image more deceivable, rotation and scaling of the duplicated image region, as simple and common image forgery techniques, are often employed. In this paper, a novel approach of copy-move location is presented for copy-move forgery which combines with the keypoint-based method and the block-based method. For a tampered image, we use the split-half recursion matching strategy to...
At present, although genetic algorithm (GA) is widely used in best polarity searching of MPRM logic circuit, there are few literatures pay attention to the polarity conversion sequence of the polarity set waiting for evaluation. An improved best polarity searching approach (IBPSA) based on GA is presented to optimize the polarity conversion sequence of polarity set and speed up the best polarity searching...
This essay provides a multi-level collaboration low-power design based on embedded processor, builds SoC (System-on-Chip) and designs a low-power SoC by register level, system level and gate level. The designed clock gating module, power management module and system program coordination can be used to realize the sleep and wake up functions on SoC. In order to realize a multi-level collaboration low-power...
In the era of big data, we may adopt the distributed architecture for a transaction processing system due to some reasons, including distributed branches, heavy demand and operational expenditure, etc. In terms of the CAP Theorem, a transaction processing system associated with ACID properties is infeasible to work well in the distributed architecture. It is indispensable to address how to make a...
Most of the time, some traces of digital tampering may be left in image manipulation, resulting in the inconsistency of natural images and providing some clues for image forgeries. This paper proposed a novel probability model based on the first digit statistics of DCT coefficients, to express the changes of statistical properties after manipulation. And we combined Bayes' theorem to detect and locate...
This paper addresses pricing decisions of high timeliness merchandise under dynamic uncertainty as well as investigating the optimal retailing mode of such merchandise. Three dual channel structures, namely, the posted-price retail distribution channel, online direct distribution channel, and Name Your Own Price (NYOP) distribution channel, should be considered. This paper develops the aggregate demand...
Unidirectional proportional pump-controlled asymmetric cylinder systems are widely used on industry machines, but the analysis and synthesis of such systems is very hard due to the nonlinearity caused by the different working areas of cylinder piston. The one-way flow control ability of the unidirectional proportional pump makes the problem more complex. To realize the nonovershooting position control...
Electromechanical gyro is one of the key components in inertial navigation systems, which directly influences the system precision. As the working temperature varies, the change of rotor supporting voltages can result in the drift of the gyro, which can cause measurement errors. Therefore, the temperature control should be stringent especially for inertial navigation devices due to its long working...
Traditional track classification algorithms such as multi-factor correlation method, fuzzy function method exist few flaws. In order to solve the problem of multi-sensor target group track classification, we propose an improved threshold factor track classification algorithm. The algorithm extracts the motion model through intrinsic properties of the target itself. It updates iterative center according...
In combinational logic circuits, expressing logic functions in terms of Mixed Polarity Reed-Muller (MPRM) expansions draws more and more attention for its advantages over Boolean logic and Fixed Polarity Reed-Muller (FPRM) expansions. For n-variable MPRM logic function, the polarity directly determines the expression form of the circuits, and then influences the power dissipation of the circuit. However,...
This paper presents a novel hardware-assisted monitoring architecture for code protection. Program code can be considered as a number of basic code blocks, each with jump and return addresses. It records all possible positions and the function called address to extract the monitoring model of program. The compiler extracts the control flow and static code integrity validation information using lightweight...
A non-harmonic detection Parallel Power Quality Conditioner (PPQC) which can compensate harmonics and reactive power without harmonic and reactive power detection is introduced. By studying the energy exchange process and principle between the AC side and DC side, a DC voltage control method, controlling the magnitude and direction of the current flowing into the DC side, is proposed, to keep the...
Traffic speed modeling and prediction is of great importance for both individuals and government authorities due to the increasing number of traffic congestion and corresponding social and economic impacts. Various approaches have been proposed to predict traffic speed. However, the long-term prediction accuracy is still unsatisfactory especially when occasional events such as extreme weather conditions...
Visible Light Communication (VLC) combined with advanced illumination has been expected to become an integral part of next generation heterogeneous networks at the time of writing, by inspiring further research interests. From both the Cell-Centric (CC) and the User-Centric (UC) perspectives, various VLC cell formations, ranging from fixed-shape regular cells with different Frequency Reuse (FR) patterns...
The increased spatial and spectral resolution of hyperspectral images (HSIs) leads to very high data rates which causes difficulties in storing and transmitting all acquired data. Efficient compression techniques are desirable solution to this problem. In this paper, we propose a compression method based on the double sparsity model which has great abilities in capturing distinctive characters of...
In this paper, we present an efficient compression algorithm for hyperspectral images. The last decade has seen a growing interest in the study of dictionary learning and sparse representation, which have been proved to perform well on natural image compression. Because of the special techniques of hyperspectral imaging, hyperspectral images have some distinct properties when compared with natural...
In this paper, we find that the structure variance of images could be divided into four classifications, slight deformations, additive impairments, detail losses, and confusing contents, and what's more, for each classification, subjective evaluation is different. According this, we propose a novel image quality assessment (IQA) method based on structure variance classification. The proposed method...
With the prosperity of online services enabled by Web 2.0, huge amount of human generated commentary data are now available on the Internet, covering a wide range of domains on different products. Such comments contain valuable information for other customers, but are usually difficult to utilize due to the lack of common description structure, the complexity of opinion expression and fast growing...
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.