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The localization of nodes is essential for many applications in wireless sensor networks (WSN). Compared with the range-based localization schemes, the range-free ones are more suitable for WSN because of their low-cost and ease for implementation. DV-Hop is considered as one of the pioneering range-free localization methods. In this paper, we propose a new algorithm named Advanced DV-Hop (ADV-Hop)...
Virtual reality tracking systems are used to detect the position and orientation of a user inside spatially immersive systems. In this paper, we simulate a laser-based tracking system that was originally developed for a six-sided spatially immersive system in environments with one and five walls to evaluate its performance for other installations. As expected, the results show that performance degrades...
Semiconductor fabrication is known to be the one of the most complex manufacturing operations. This is due to total processing steps in semiconductor fabrication is as high as 1000 steps and the process will re-enter through same equipments multiple times. This will always pose a challenge to the operational team to achieve goal for optimal cycle time and maximum output. One of the WIP (Work In Progress)...
The fire control system dynamic simulation test method got proposed through the way of system simulation. In this method, radiation and motion characteristics of the target were modeled by multifunctional target simulator, the 3-DOF platform was used in simulating the attitude characteristic of carrier. The composition of system, working principle and simulation results were introduced in detail in...
In this paper, we study multiple-input single-output joint processing (JP) systems with limited feedback where two adjacent base stations exchange both channel state information and their data. To optimize the sum-rate performance of the JP system, we propose a new feedback bit allocation method which maximizes quantization accuracy in the presence of pathloss. The quantization accuracy is formulated...
Simulation circuit design to fulfill the accuracy control of CNG and diesel in internal combustion engine of premixed charge was done firstly. Then simulation research to fulfill the accuracy control of the mixing ratio of CNG and diesel in different working conditions was taken. The result shows the ratio of CNG and diesel can be controlled accurately using the simulation circuit designed by us.
Recognition of network boundaries in wireless sensor network (WSN) applications is crucial from two reasons. First, a knowledge of boundary nodes can help to increase a security performance of sensor network. And second it can significantly contributes to the energy conservation of inner nodes that can be switched into the sleeping modes during no activity is presented on the network boundaries. Furthermore,...
Supervised and unsupervised learning are two well disseminated and discussed paradigms which define how image classification techniques extract knowledge about the data. A recent learning paradigm, called semi-supervised, comes to solve some limitations of supervised learning, as the amount of information needed to conduce an appropriated learning process. Different models of semi-supervised learning...
The method of Self-Organizing Configuration Design (SOCD) for vehicle leaf-spring can lessen the complexity of process and improve the accuracy of calculation. In order to realize a rapid parameter solving in SOCD for vehicle leaf-spring, a method of parameter configuration is put forward based upon RBF (Radial Basis Function) Neural Network. Starting with problem description of parameter configuration,...
Taking the investigated data from 40 samples plots of natural secondary oak stand in Baotianman natural reserve for the research object, BP-ANN model was created by using relative diameter of tree as the input variable, and accumulated frequency of tree number as output variable. Through training and optimal seeking by the software of MATLAB, the idea network model was created. In the performance...
The network-on-chip (NoC) has become an integral part of multicore systems and multiprocessor systems-on-chip (MPSoCs). Detailed simulation models are one of the most common techniques to evaluate the performance of a NoC. Most of these models only include a subset of the complete architecture and use only synthetic traffic. However, there is usually a combined effect of other components of the architecture...
This paper introduces the simulation method of the ballistic missile control system for precision analysis, analyzes the influence mechanism of the ballistic missile control system error on the missiles's impact point, constructs simulation model to control the system accuracy, and on the basis carries out the simulation calculation of the model and analyzes the result.
With the development of communication and sensor technology, wireless sensor network (WSN) ,which integrate data acquisition, processing and transmission, communication, cause the attention of people. Limited by node's energy, we should consider node localization algorithm, when study wireless sensor network; There are two kind of localization algorithm: based on range finder technology and without...
Cellular automata model is a useful tool to understand the urbanization process. But nontrivial questions have to be answered about the choice of model parameters such as cell state resolution. The objective of this study is to evaluate the sensitivity of cellular automata to cell state resolution when using CA in a geographic context. The study chooses CA-Markov model to simulate urban expansion...
Range-free localization schemes are much promising in wireless sensor networks because they can estimate the location of a sensor node without power-consuming and expensive devices for measuring distance or angle information. Among range-free schemes, multi-hop schemes can localize sensor nodes with a few beacon nodes through the multi-hop connection between nodes. Since the localization accuracy...
The use of robotics in distributed monitoring applications requires wireless sensors that are deployed efficiently with an awareness of the information gain, communication constraints, resource allocation and coordination, and energy utilization. In this paper, we address the estimation of a parameterized spatial field distribution with a group of mobile robots sampling adaptively and using a statistically-aware...
In this paper, a simple microphone array is proposed to estimate the direction and distance of a sound source in 2D space. The microphone array consists of three elements and these microphones are arranged in cross form. Based on the geometrical relationship and the estimated time delays between each pair of microphones, a method is proposed to directly get the direction and distance of the sound...
The Toroidal Field Model Coil (TFMC) was extensively tested in 2001–2002, up to maximum transport current of 80 kA and peak field of ∼ 10 T, in the TOSKA facility at the Karlsruhe Institute of Technology, Germany. Here we apply the 4C code, which was developed for the analysis of thermal-hydraulic transients in superconducting magnets, including winding, structures and cryogenic circuit, to the analysis...
This paper discusses the mechanism behind dynamic jitter accumulation in clock repeaters, considering the impact of power supply noise correlations. We show that differential and common mode noise have a different impact on jitter accumulation, depending on correlations between cascaded repeater stages. We also propose a simple accumulation model that can be used to replace time-consuming transient...
A single controller current balance (SCCB) technique is proposed to achieve the time-multiplexing current balance in voltage-mode multi-phase DC-DC buck converter with only one modulation controller. Thus, the N-1 controllers can be removed when the SCCB technique is implemented in the monolithic N-phase DC-DC buck converters for largely decreasing the silicon area and power consumption. In addition,...
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