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In order to improve the quality of the reconstruction image which using Compressive sensing(CS) algorithm. Based on improved measurement matrix combined with CS Matching Pursuit(CoSaMP)algorithm, this paper presents a kind of Fourier Ring Compressive Sampling Matching Pursuit (FR-CoSaMP) algorithm. The algorithm superimposed deterministic ring measurement matrix to optimize measurement process on the basis of Fourier measurement matrix. And solve the iterative inverse operation by using FFT fast Fourier calculation method, which can make the measurement information more complete, and speed up the signal reconstruction. Then introduces the mathematical framework and algorithmic processes of the FR-CoSaMP algorithm in details. Finally, compare these types of traditional algorithms and the improved algorithm by analysis and simulation. The results show that, under the same image sparsity and measurement scale, the improved FR-CoSaMP algorithm has better performance in terms of the image reconstruction.

Sleep apnea is a growing sleep disorder issue and estimate to affect 7% of the adult population in Malaysia. In this study, the electrical activity of the brain is studied using Electroencephalogram (EEG). The data obtained was then decomposed using three methods; Empirical Mode Decomposition (EMD), Bivariate EMD and finally Ensemble EMD. The Index of Orthogonatility (IO) was obtained which shows EMD performed the most poorly, EEMD the best and Bivariate in between. The performance of EMD greatly improves when the number of samples was greatly decreased and very high peaks and more complex parts of the signal were excluded in the analysis. Segmentation was also conducted and the segmentation error revealed when an Event Related Potential (ERP) has happened which is when apnea occurred.

In this paper accurate estimation of parameters, higher order state space prediction methods and Extended Kalman filter (EKF) for modeling shadow power in wireless mobile communications are developed. Path-loss parameter estimation models are compared and evaluated. Shadow power estimation methods in wireless cellular communications are very important for use in power control of mobile device and base station. The methods are validated and compared to existing methods, Kalman Filter (KF) with Gaussian and Non-Gaussian noise environments. These methods provide better parameter estimation and are more accurate in most realistic situations. EKF can estimate the model channel parameters and predict states in state-space.

In order to improve the measurement accuracy of three-dimensional (3D) scanning robot, a method of 3D scanning robot system error modeling and compensation based on particle swarm optimization radial basis function neural network (PSO-RBFNN) is proposed to achieve intelligent compensation of measurement error. The structure, calibration and error modeling process of 3D scanning robot system are mainly described. Cleverly using the iterative closest point (ICP) algorithm to construct input and output data pairs of neural network, and the specific process of error modeling using PSO-RBFNN is given. Finally, through the actual experiment we test and verify the correctness and effectiveness of the proposed error modeling and compensation method by measuring the distance between the centers of two standard balls. Experimental results show: the proposed error model and the compensation method can effectively compensate the measurement errors and improve the accuracy of the 3D scanning robot system.

Some Orientation &Mobility (O&M) specialists provide instruction to individuals with disabilities other than blindness and vision impairment. In the US, this practice is referred to as travel instruction (TI). Through decades of providing TI, the authors have learned basic principles for success. This practice report addresses the definition of travel instruction, the essential components of a TI program, and two brief case studies. Advantages and opposition to O&M specialists providing TI are discussed. All individuals, regardless of the type of disability, deserve exemplary O&M and TI provided by highly qualified professionals. The authors encourage O&M specialists to provide TI and advise them to seek mentors and continuing education in areas of need.

This pilot study conducted between January 2010 and December 2014, investigated whether or not a structured peer support program would benefit people with vision impairment. The program was designed to provide support and information to clients over the telephone about mobility and vision conditions. Fourteen volunteers with vision impairment who provided the telephone support were matched with 71 clients with vision impairment. On completion of each client’s support program an evaluation was completed by the client to determine their satisfaction with the program. The evaluation revealed that 86% of clients were extremely satisfied with the information they received and 89% of clients were extremely satisfied with the support they received.

The value of dog guides in terms of mobility for people with severe vision impairment and blindness is well recognised. There has, however, been a paucity of research exploring the potential health benefits of working with dog guides. This article reports the initial stage of a research project, which aimed at redressing this dearth of research. The study used three focus groups to explore the experiences of 22 participants from three Australian states. The focus group meetings were the first of three components of a major research project into this important issue. The outcomes reflected a self-reported trend toward enhanced health and wellbeing for people who use dog guides as their primary mobility aid.

This study compared the linear parameters between children who are blind and children with low vision. Six children who are blind and five children with low vision, aged between five and seven years (mean = 5.9 years old) were analysed by three-dimensional gait analysis and linear parameters of gait: velocity, cadence, stride length, and step width from 12 gait cycles. The comparison of the numerical variable was made using the Mann-Whitney Test. The only significant difference was found in stride length. The results suggested that an adapted gait provided stability which, in turn, improved balance. This finding seems to indicate the importance of commencing orientation and mobility (O&M) training as soon as possible to improve gait, balance, and movement with children who are blind or have low vision.

In order to study the effect of low frequency weak magnetic field on the cardiovascular system through the central nervous system, this paper design the experiment that is using a rotating magnetic field acts on the cerebral cortex, the different frequency when different parts of the brain, collecting and analysis ECG and blood pressure signal, and discussing the effect of low frequency rotating magnetic field on cardiovascular system through the brain cortex. It proved that a rotating magnetic field can affect blood pressure through cerebral cortex, has different effects on blood pressure by using different frequencies, the effects on blood pressure is not the same because a different position focused on by magnetic field. The results show the frequency and location stimulated with rotating magnetic field may have certain therapeutic effect for controlling hypertension.

Electro-hydraulic actuator (EHA system) identification is to describe the characteristic of the system that useful for prediction or control system design. There are numerous methods of EHA modeling but there has not been much model using fractional-order (FO) model. In this work, integer-order (IO) model and FO model are developed to model EHA system. Output-error method is used as the estimator for both model. The coefficient of IO model was first estimated and using the estimated coefficient, the derivative order of FO model is estimated. These models has been validated by comparison of error, coefficient of determination (R2), mean square error (MSE) and correlation function. The results for the proposed model show improvement compared to the IO model.

A home router, or a home gateway, is the node that resides between a public network and a home network for computers to share Internet connections. To insert customized queuing and scheduling codes into the embedded Linux kernel is a way to make the Linux-based home routers support Quality of Service (QoS). It is desirable that the small Linux kernel adopts an efficient queuing and scheduling algorithm to support link sharing, priority and traffic shaping. The algorithm presented in this paper is based on the concept of hierarchical link-sharing and each class in the hierarchy is bound with a token bucket, which can shape the traffic of this class. The analysis and experiment results presented in the paper show that through the novel way of weighted fair token sharing, this proposed algorithm guarantees basic bandwidth service for each class and enables weighted fair sharing of excess bandwidth, with which home computers connected to the network share the Internet service evenly.

Different approaches of non-destructive estimation of the LAI in winter wheat were compared. Plant height had weak relation with the LAI, while estimated biomass showed high logarithmic relationship (R2=0.839). NDRE and REIP were logarithmically well related to the LAI (R2=0.726 and 0.779 respectively). Saturation effect of NDRE and REIP was less than NDVI. Some RGB-based indices also showed good potential to estimate the LAI. Among the indices, Gm, GMB, RMB, and NRMB were better related to the LAI. The results indicated that digital cameras can be used as an affordable and simple approach for assessment of the LAI of crops.

Image-matching is a basic task in image procession used to (geometrically) match two or more images such as different times, different sensors and different view points. Improved image-matching technology has been widely applied in medical image, remote sensing image, computer vision military and so on. What put forward at the present can be most divided into matching method based on gray and features. The article presents a scheme that is based on subtraction images matching with dynamic selection of templates, which overcomes these more sensitive disadvantages like gray, rotate, deformation and occlusion to achieve accurate calibration for different images.

The problem of multi-objective robust feedback linearization controller design of nonlinear system with parametric uncertainties is solved in this paper. The main objective of this paper is to propose an optimal technique to design a robust feedback linearization controller with multi-objective genetic algorithm. A nonlinear system is considered as a benchmark and feedback linearization controller is designed for deterministic and probabilistic model of the benchmark. Three and four conflicting objective functions are used in Pareto design of feedback linearization controller for deterministic and probabilistic design, respectively. The simulation results reveal the effectiveness of the proposed method.

In this work we report the synthesis, microstructure, electric properties and sensing performance of BaSnO3 (BS) powder, it was prepared by mechano-chemical method. As prepared powder is calcinated at temperatures 1100 °c, and 1300 °c tested for crystallization. Thick films were prepared using simple screen-printing technology. Structural and electrical analyses were performed and the results have been correlated. The material was tested for various gases such as CO, CO2 , NH3, Cl2, H2, LPG, ethanol, and H2S. The pure BS film shows good response multiple gases at various operating temperature up to 5000C as NH3, CO2, CO, ethanol and, H2S for different gas concentrations, when the pure film is surface modified with aqueous solution of Cucl2 using simple dipping technique for various time intervals (5 min., 10 min., 20 min. and, 30 min.), film improves the selectivity and sensitivity. Maximum response (S=36.2) was found to H2S gas at temperature of 250 0C and S=12.1 for ethanol at 500 °c for gas concentration of 50 ppm with film dipped for 10 min. time interval. The characterization of the films was done by XRD, SEM and TG-DTA. Crystallite size, texture coefficient, specific surface area, electric properties and gas sensitivity of the films were measured and presented.

Australia is a multicultural country with a large number of older people from culturally and linguistically diverse (CALD) backgrounds who...

People with disabilities and their advocates have sometimes requested that special warning signage be posted in areas to help make...

Guide Dogs Association of South Australia and Northern Territory (Guide Dogs SA.NT) provides Orientation & Mobility (O&M) programs for people...

The purpose of this study was to determine the effectiveness of the SoundFlash device in enhancing non-visual spatial perception. A...