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In this paper, The relationship between the temperature rise of the heat generating components densely mounted in a grid pattern on the board and the various board design conditions was discussed. Based on the discussion, a simple estimation formula that can be used for temperature estimation for densely mounted components was derived.
Traffic retention is an important factor of intelligent transportation system, which can vividly reflect current state of the road. Accurate estimation of traffic retention can provide support for the dynamic allocation of the traffic signal, thus alleviating the problem of urban traffic congestion. The traditional method can only estimate the long-term or red light traffic retention according to...
For complying with power distributor regulation, the electric car chargers have to address the line current harmonic mitigation problem. The conventional solution is a proportional integral controller on the rectified current with a feed-forward anticipation action on the input network current. In this work we take advantage of a harmonic description of the electric car charger in order to propose...
Electric water heaters have been regarded as a load to be exploited in residential energy management applications due to their potential energy storage capacity. Nevertheless, the implementation of control strategies for water heater systems requires high-performance models which must be capable of reproducing a water heater's internal operation dynamics, especially their inner water temperature variations...
The estimation of the domain of attraction of a class of susceptible-infectious-removed-susceptible immigration is investigated. On assumption the disease-free equilibrium and the endemic equilibrium existences, hence a Lyapunov function too, the domain of attraction of the epidemic model is estimated by means of LF-LMI-moment and SOS optimization approaches. An invariant subset of the domain of attraction,...
Reliability is defined as the repeatability of measurements or the consistency of repeated measurements. The most common type of reliability in medical research is the rater reliability. When the measurements are continuous, intra-class correlation coefficient (ICC) is used to evaluate the inter-rater reliability. There are different formulas for calculating the ICC which depend on the purpose of...
We propose the use of a light-weight setup consisting of a collocated camera and light source – commonly found on mobile devices – to reconstruct surface normals and spatially-varying BRDFs of near-planar material samples. A collocated setup provides only a 1-D “univariate” sampling of a 3-D isotropic BRDF. We show that a univariate sampling is sufficient to estimate parameters of commonly used analytical...
Analysis sparse representation (ASR) and synthesis sparse representation (SSR) are two representative approaches for sparsity-based image modeling. An image is described mainly by the non-zero coefficients in SSR, while is mainly characterized by the indices of zeros in ASR. To exploit the complementary representation mechanisms of ASR and SSR, we integrate the two models and propose a joint convolutional...
This paper proposes a fast-Fourier-transform-based jitter separation and model-based bit-error-rate (BER) curve estimation technique for analyzing asymmetric total jitter distributions. The proposed method assumes asymmetric deterministic jitter models which have distributions denoted by even and odd functions. It separates deterministic jitter and random jitter by identifying the model parameters...
The paper deals with the problem of synthesis and analysis for procedures of reliability parameters estimation in case of radioelectronic devices technical state deterioration. The synthesis problem was solved on the basis of the maximum likelihood method. The analysis problem was solved using analytical calculations and based on statistical simulation.
Current methods of topology estimation rely on breaker statuses to obtain accurate results. However, due to the lack of availability of time stamped breaker status data in many electric systems, as well as the errors associated with this data, these methods are very limited in their current scope. Additionally, synchrophasor measurements can be used to supplement information on the connectivity between...
The article deals with the constructing of the decision-making system using the modern software which supports the automation of reporting and management. For this purpose we will implement the procedure of quality estimation and risk-contributing factors forecasting. The system can be used for the formation of the development strategy of the high-technology enterprises.
Hyperspectral images (HSI) have found widespread application in many disciplines because of their ability to characterize the object being imaged in a much more detailed manner as compared to colored or multispectral images. An accurate modelling of the underlying noise is, however, necessary in order to extract the useful data from the HSI. Although, classically noise in HSI has been modelled as...
The article considers the architecture of an information system for automating the testing of user interfaces based on the use of Internet technologies. The general description of the system operation, the description of the main modules, the structure of the interface of the Internet resource are given.
In ultrasonic NDE applications, the received signal carries valuable physical information along the wave propagation path such as locations, orientation and sizes of discontinuities. Various signal processing algorithms have been utilized to interrogate ultrasonic echoes, highly overlapped and sometimes noise-contaminated. As of assessing and monitoring the in-situ outsized structures, it becomes...
Ultrasound shear wave imaging has been extensively studied in thin tissues, such as the artery and cornea. The dispersion analysis of the guided wave propagating in such layered structures based on a modified Lamb wave model for homogeneous and isotropic thin soft media in water has been shown to yield accurate elasticity estimates. Nonetheless, thin soft tissues are often bounded with other tissue...
Enterprise Resource Planning (ERP) systems are large scale integrated systems covering most of the business processes of an enterprise. ERP projects differ from software projects with customization, modification, integration and data conversion phases. Most of the time effort and time estimations are performed in an ad-hoc fashion in ERP projects and as a result they frequently suffer from time and...
Disease cost estimation is an important and challenging issue. It serves as the key factor of hospital cost and cost control. It has been a challenge to estimate the disease cost because of the complexity of the disease pathology, individual differences of treatment process, adverse drug reaction, and complications. Especially in some high risk and high noise diseases there is another challenge from...
The efficiency analysis of Runge-Kutta family methods for solving ordinary differential equations (ODEs) in order to simulate typical transient processes in AC machines is performed in this paper considering the choice of the set of variables in the state space vector. The detailed analysis of the AC machine ODEs and their numerical solution is performed based on the estimation of the higher order...
Distributed compressive sensing is a framework considering jointly sparsity within signal ensembles along with multiple measurement vectors (MMVs). The current theoretical bound of performance for MMVs, however, is derived to be the same with that for single MV (SMV) because the characteristics of signal ensembles are ignored. In this work, we introduce a new factor called "Euclidean distances...
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