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.
With the rapid development of marine technology, underwater sensor networks (UWSNs) are gradually evolving from research to practice in recent years. Practicability and reliability are two major concerns for routing protocols in UWSNs. As localization is not necessary in depth-based routing protocol (DBR), it has an outstanding practicability than other geographic routing protocols. However, the reliability...
Understanding of human movements in urban areas plays a key role in improving our disaster response, evacuation, and relief plans. However, there is a lack of research on human mobility perturbation under the influence of hurricanes. Furthermore, limited simulation studies have had access to empirical human travel data in urban areas during natural disasters. In this paper we developed a computational...
In this paper, we study the finite-time consensus tracking problem for second-order multi-agent systems with input uncertain dynamics and external disturbances. Robust finite-time consensus tracking controllers are designed with reduced communication. The proposed controllers achieve finite-time consensus tracking in the presence of bounded input uncertainties with only relative position information...
The analysis of communities and their evolution in dynamic networks is a challenging research with broad applications. The recent studies have found that the overlaps between communities are more densely connected than the non-overlapping parts in some real networks. The findings are different from the present concepts of the overlapping communities. Existing methods may fail to detect this kind of...
In this paper, the thermoelectric coupling finite element model of 150A/75mV shunt and 1000A/75mV shunt were established, and the temperature rises of them when the measuring current was over range were analyzed. The electromagnetic finite element models of shunts were established simultaneously, and the electromagnetic forces on manganin sheets of shunts were analyzed. Then the measurement errors...
A new deadlock-free partially adaptive routing algorithm is proposed for 2 − dimensional (2D) tori with only two virtual channels. The deadlock avoidance technique is presented based on a new turn model for 2D tori. In order to avoid cyclic channel dependencies completely, we propose the new odd-even turn model for 2D tori. The new model is an improved algorithm of the original turn model, and sets...
The Non-gyro inertial measurement unit (NGIMU) uses only accelerometers replacing gyroscopes to compute the motion of a moving body. In a NGIMU system, an inevitable accumulation error of navigation parameters is produced due to the existence of the dynamic noise of the accelerometer output. When designing an integrated navigation system, which is based on a proposed nine-configuration NGIMU and a...
In this paper, we present pulse shaped OFDM as an enabler for a flexible PHY design of the air interface for 5G. After introducing the waveform details and its degrees of freedom provided for the system design, we describe the suitable parameterizations to be considered for addressing the diverse requirements envisaged for future 5G systems, which are derived from the broad range of services and frequencies...
Thermoelectric coupling model and electromagnetic model of a 3000A/75mV DC current sensor in HVDC were established based on FE method, and the results of temperature rises and electromagnetic forces with different measuring currents were analyzed. Then, the measurement errors of this DC current sensor with different measuring currents were estimated according to the results of temperature rises and...
With the deployment of sensor and communication network, the conventional power system is transformed into a multi-dimensional heterogeneous complex system, which is known as Cyber-Physical Power System (CPPS). On the one hand, CPPS has developed new abilities of real-time sensing, dynamic control and information services; on the other hand, massive information interaction in CPPS has posed more potential...
A novel method of calculating line loss in transformer district is presented and realized by programming, which is Back Propagation (BP) network model based on Levenberg-Marquardt (LM) algorithm. Establish the characteristic index system according to electric characteristics parameters of samples. The classification of samples by K-Means clustering algorithm solves the numerical dispersion of line...
The development of smart metering technologies makes it possible to apply the thermostatically controlled loads (TCLs) into the demand response (DR) programs such as direct load control (DLC). To characterize the dynamics of a large number of TCLs, the computationally efficient sate-queuing (SQ) model is designed in some recent research works. However, very few attentions have been given to its accuracy...
Aiming at the problem of reliability redundancy design algorithm, this paper presents an adaptive particle swarm optimization algorithm with foraging behavior. In this method, the bacterial foraging process is introduced into the adaptive particle swarm optimization algorithm, which can give the function of particle movement and turning, improve the ability of local search and avoid premature behavior...
Fault diagnosis is of great significance to maintain safe and stable operation of the traction power supply system. Fast diagnosing fault to restore power supply is important. A kind of TPSS fault diagnosis model based on Bayesian network considering the uncertainty of information is proposed in this paper. The fault diagnosis model inherits the capability of dealing with uncertain information of...
For reconstructing three-dimensional (3D) temperature field of small-scale and impenetrable solid, such as printed circuit board (PCB), a new method based on fuzzy relationships between temperatures of different points was proposed and software was developed for solving the issue. Firstly, fuzzy incomplete relationships between temperatures of inside points and surface points were introduced. Secondly,...
An analytical model of the Buck converter is proposed based on the per-unit method. For the principle of power conservation, the critical inductance between the continuous conduction and discontinuous conduction modes are determined, and also the critical average current are deduced. Taken the critical inductance, the critical average current and the rated load as basis variables, the per-unit equation...
As harmonic can change the fusing time of fuse, this paper established finite element (FE) model of sand current-limiting fuse in ANSYS, and analyzed the influence of harmonic content and harmonic frequency on the fusing time of fuse by thermoelectric coupling simulation of the FE model.
Bioradar is an emerging concept to aim at human targets detection. Since the vital signs are weak, surrounding environment has greater interference on it. It is difficult to obtain the high performance of static human body detection and localization. Dual-channel SFCW radar is used to improve this problem and a new method of static human body detection based on dual-channel SFCW radar is proposed...
The topology of balanced amplifiers has conventionally been one of good solutions for broadband amplifiers. Although feedback amplifiers have broader band characteristics than normal single-ended amplifiers, balanced amplifiers have been more popular with their additional technical advantages such as high output power, redundancy, and many productive applications in wireless systems. However, in most...
Performance and fairness are two important factors for Hadoop cluster. Many previous studies either focus on the improvement of performance or fairness solely, and most of which are based on the first generation of hadoop(MRvl). However, few studies consider the tradeoff between the performance and the fairness on Hadoop YARN, the second generation of hadoop(MRv2). In this paper, we propose a new...
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.