This paper addresses a target localization problem in 3-D wireless sensor networks using hybrid system that fuses received signal strength and angle of arrival measurements. First, we formulate the measurement models as pseudo-linear equations. Then, bias is derived from measurements take noise into account to improve performance. Furthermore, non-convex estimator based on Least Squares criterion. Finally, semi-definite relaxation second-order cone are applied transform convex one. We...

In this paper, we evaluate the performance of power line communications (PLC) networks in tree-based topology with repeaters. The introduction repeaters network has potential to increase global capacity PLC system. number and position along distribution cable have be optimized according configuration. OPERA Specification which is one most popular proposals system design, using Time Division Frequency technology can guarantee full coverage provide spatial reuse. reuse capability increases...

This study aims to develop a robust metalearning system for rapid classification on large number of tasks. The model‐agnostic (MAML) with the CACTUs method (clustering automatically construct tasks unsupervised metalearning) is improved as EW‐CACTUs‐MAML after integrated entropy weight (EW) method. Few‐shot mechanisms are introduced in deep network efficient learning process implementation theoretically interpreted “gene intelligence.” Validation typical dataset (Omniglot) indicates an...

Semiautomatic 2D-to-3D conversion plays an important role in generating 3D contents for display. However, most existing methods assume that user scribbles are perfectly correct, and only give acceptable results when provides accurate labels. To address this problem, Welsch M-estimator data fidelity is used to resist erroneous scribbles. The which able alleviate the influence of inaccurate has theoretical guarantee by means its redescending property. First, introduced measure between...

We propose a full-duplex MIMO wireless communication system where simultaneous bidirectional in the same band is obtained via cancellation of self-interfering signal. In this paper, first all, we review three mechanisms for self-interference system, i.e., Antenna cancellation, analog domain and digital cancellation. Then, introduce on basis proposed build simulation model 2×2 system. Finally, study performance under different node distance, fading channel models, estimation error residual...

Chaos theory has been proved to be of great significance in a series critical applications although, until now, its analyzing soil respiration have not addressed. This study aims introduce chaotic component the control system and explain complexity this nonlinear system. also presents theoretical framework for better understanding components arid land. A concept model processes mechanisms associated with subterranean CO 2 evolution are developed, dynamics is characterized as an extended...

Electric arc furnace(EAF) is one of the important equipments modern iron and steel enterprises. As a typical nonlinear load, power factor furnace low, reactive load fluctuates greatly. When connected to grid, it may cause increase harmonic content, voltage flicker, three-phase imbalance other quality problems. Therefore, accurate modeling great practical significance. In this paper, starting with time-varying resistance model ac furnace, PSO(Particle Swarm optimization) algorithm used for...

In the wireless sensor network, there is a consistent one-to-one match between information collected by node and location of node. Therefore, it attempts to determine unknown nodes for networks. At present, are many kinds localization methods. Because distance error, hardware level, application environment costs other factors, positioning accuracy various methods not in complete accord. The objective function established algorithm simulation experiments carried out make mobile ronot...

A fault can form a trap to store oil and gas, it also serve as good second migration channel for gas. Therefore, accurate identification is of great significance decision-making in exploration development gas fields. Faults destroy the continuity integrity strata, so there are obvious differences between faults surrounding strata. The clustering algorithm does not need label data task, find difference completely from itself. It simple efficient unsupervised machine learning algorithm, reduce...

CPAP (Continuous Positive Airway Pressure) ventilator is designed based on compensation algorithm and Automatic Regulation. With the use of patient status system changes in environment, breathing machine through will be dynamically adjusted accordingly. The algorithm, taking into account regional differences altitude, pressure, masks flow loop caused by pressure gas leak conditioned lack progressive features. MPC5554 chosen as main processor for its high integration precision. It has several...

1553B bus node needs to be converted for the data transfer of other buses. Gigabit Ethernet is built on standard technology. It has advantages fast communications, strong adaptability, so it can serve as a transmission channel. The protocol introduced and analyzed, including link layer, physical functional analysis. In system designing, high-end FPGA chip used core chip. its internal hardware, there are integrated while layer all in implementation, carried out through DMA exchange order...

Pulse monitoring system was designed with integrated AD module in micro-controller chip and the feedback algorithm. HK-2000B-type sensor used for collecting pulse signal. Customize design process, some components, preparation of LCD driver display menu; addition, by using results signal sampling algorithm improves measurement accuracy. After a long diverse test, accuracy stability while significantly reduce time, high practical value.

An, P., 2018. Path optimization method of autonomous intelligent obstacle avoidance for multi-joint submarine robot. In: Ashraf, M.A. and Chowdhury, A.J.K. (eds.), Coastal Ecosystem Responses to Human Climatic Changes throughout Asia.A robot could not avoid obstacles in real time under the complex environment seafloor. To address this problem, a path by was proposed. First, kinematic analysis carried out. The joint space interpolation algorithm used trajectory planning its robotic arm....

A curved nanographene, conceptually by insertion of nitrogen into a trapezoidal planar nanographene at the edge was synthesized π‐extension nitrogen‐doped hexa‐peri‐hexabenzocoronene. This aza‐doped exhibited π‐electronic concave face containing nonaromatic azepine ring in middle with size 14.0 Å length and 4.0 depth, which represents an unprecedented half‐side geometry nanographene. The bent low degree conjugation suggested calculation results. Due to unique 3D structure electron‐rich...

Security of wireless body sensor networks (BSNs) with telemedicine applications remains a crucial issue. A family novel biometrics schemes has been recently proposed for node recognition and cryptographic key distribution without any pre-deployment in BSNs, where dynamic entity identifiers (EIs) generated from physiological signals captured by individual nodes are used to recognize each other. As the performance EIs determines maximal that can be achieved such biometric systems, several...

A personal identity management system based on RFID is widely used in attendance checking. This for keeping the record of staff's quickly and automatically relevant data supplied to faculty staff look up, which saves a lot class time sing upon. paper introduces basic function component register system, conducts detailed analysis each important part system. After tested, confirmed work as exactly possible.

The paper mainly studies the EEG de-noise technology. In light of that traditional wavelet transform signal algorithm is relatively complex, proposed an orthogonal transform-based method first independently separates from collected with quantification and analysis. Then, it adopts to separated EEG. Finally, through Matlab simulation experimental results, improved could well remove noise, good effectiveness.

There have been a number of research works that investigate the use formal optimization techniques for accurate design WLAN. Unfortunately, these approaches may not be effectively applied to large scale WLAN deployment scenario. Consequently, it is necessary an algorithm has more powerful ability global solve such problems. The main contribution work presented in this paper designing multi-agent based on local control from agents and system, including synthetical analysis relationship...

A system of ink key remote controling is introduced, which consisted work station control and motor system. The based on S3C2440A platform the use microcomputer STM32VET6 as central unit. uses TCP/IP protocol communication while Ethernet provides corresponding physical layer . Thus can multiple large-scale printers.The directly access public network to send receive data when necessary, greatly improving convenience

Summary Many geo-steering techniques focus on the real-time application of geological evaluation data and do not take full advantage spatial information seismic data. The steering technique for horizontal drilling proposed in this paper is based high-precision 3-D data, carries out work target-entering section to improve accuracy oil reservoir discovery rate. Through field wells, rate channel reservoirs have been greatly improved. This evidence that useful improving efficiency success drilling.