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Visual induced motion sickness (VIMS) is one of the most effective factor of visual discomfort on wide screen such as 4K display. Though Biosignal parameter such as LF/HF wasn't reflect the VIMS enough considering individuality, we focus body motion effects that caused by VIMS itself. From the experimental result, the disturbance of body motion reflect time-sequence discomfort and might be possible...
In order to detect the obstructive sleep apnea (OSA) accurately, a non-contact way using Doppler radar is presented in this paper. The residual comparison based algorithm has been proposed to enhance the body movement cancellation and pre-event baseline calculation, so that the OSA event can be detected accurately. The experimental result shows the effectiveness of the proposed method for diagnosing...
In this paper, an image steganography approach is presented dividing the cover image into 2×2 non-overlapping pixel blocks. The upper-left pixel of that block embeds a certain number of bits of the secret bit stream. Whereas, the remaining pixels of the same block embed the secret data using a modified version of the pixel-value-differencing (PVD) method that considers embedding secret data into both...
Dividing a dataset into disjoint groups of homogeneous structure, known as data clustering, constitutes an important problem of data analysis. It can be solved with broad range of methods employing statistical approaches or heuristic procedures. The latter often include mechanisms known from nature as they are known to serve as useful components of effective optimizers. The paper investigates the...
Multiscale entropy (MSE), an estimate of the complexity of physiological signals has been used for assessing diabetes status. This method requires much computation effort. Our study aimed to examine the Poincaré plot, an easier method for computation to differentiate the diabetes status. We selected subjects and divided them into three groups including the non-diabetes (HbA1c ≤ 6.5%, n=22), diabetes...
By identifying the status of traffic congestion, the irrationality of road network planning can be made clear to propose comprehensive optimization measures. This paper used traffic congestion spatio-temporal identification model considering the changing nature of traffic congestion with time and space, to reflect the traffic congestion degree of a section, a route and a whole network. The application...
The paper proposes a customized frequency domain energy detection spectrum sensing scheme. It is needed to fulfill requirements provided by the IEEE 802.22 standard, aimed at extending Internet services to Television White Space frequencies. It provides a detection scheme allowing to achieve strict sensitivity required by the protocol either in sensing time or in detection capabilities. In particular,...
Understanding API usage is important for upstream and downstream developers. However, compiling a dataset of API clients is often a tedious task, especially since one needs many clients to draw a representative picture of the API usage.In this paper, we present KOWALSKI, a tool that takes the name of an API, then finds and downloads client binaries by exploiting the Maven dependency management system...
The paper presents the controller design of a inertial stabilization platform for optical devices in which a one axis gimbal system is used. The proposed approach is based on a Fractional Order Proportional Integral Derivative (FOPID) controller, whose parameters are designed by using genetic algorithms optimization. The controller performance has been compared with those of a standard PID controller.
Discusses the concept of quality of education, highlights the criteria and indicators of assessing its quality in the framework of theoretical and methodological research. Highlights the main requirements to level of preparation of graduates.
In electric power systems, it is important to Identify weak buses for operational and planning purposes. The conventional methods for assessing voltage stability are time consuming because they are based on schemes that vary the reactive power at a load bus one at time, while keeping reactive power at all other buses constant. In this paper, a framework that uses the ratio of standard deviation to...
The Ecuadorian electricity sector is a strategic area of the country, whose general objective is to Generate, Transmit, Distribute and Commercialize electrical energy. In 2009, the Ministry of Electricity and Renewable Energy (MEER) and the Electric Utilities of Ecuador signed an agreement for institutional cooperation to strengthen the electricity distribution sector with the objective of achieving...
In this paper, we present Mnogoznal, an unsupervised system for word sense disambiguation. Given a sentence, the system chooses the most relevant sense of each input word w.r.t. to the semantic similarity between the given sentence and the synset constituting the sense of the target word. Mnogoznal has two modes of operation. The sparse mode uses the traditional vector space model to estimate the...
At present, the lack of actual operation experience of the intelligent substation secondary system results in indeterminate maintenance strategy, time-consuming and laborious routing inspection, blindness in maintenance work and some other issues. Based on this, a comprehensive evaluation system of the operation quality of the secondary system is realized firstly. Secondly, the utility function is...
In this paper, we propose a simple recursive backtracking algorithm and compare its performance against existing algorithms for a classical chessboard puzzle in recreational mathematics known as knight's tour on standard or regular 8×8 square chessboard. In this work, we re-investigate this celebrated problem with the help of modern computer. Our algorithm is easy to implement compared to other existing...
In this paper the design of an optimal filter for noise reduction in the readout of a charge coupled device (CCD) with applications in particle detection is presented. The proposed approach uses measured data of the noise at the output amplifier of the CCD to obtain the coefficients of a filter that minimizes the pixel variance. The preliminary results show that this approach outperforms the standard...
This paper proposes a method for a real-time classification of the absolute driving style using three levels of sportiveness: calm, normal and sporty. The algorithm is based on a physical gg-plot-based approach and on a novel manouvre detection algorithm. The method makes use of standard vehicle signals which can be also provided by an external IMU+GPS system. Experimental results show the effectiveness...
One of the prospective signals to assist in the acquisition and examination of heart rate variability (HRV) is the photoplethysmographic (PPG) time series. Poincaré method has been applied to HRV analysis in a patient with diabetes and chronic renal failure (CRF). Our study develops the Multiscale Poincaré (MSP), an easier method for computation to assess diabetes. We selected subjects and divided...
Taking Forest Park in Chongqing metropolitan area as the research objects, the paper adopts nearest neighbor index, geographic concentration index, unbalanced index, Gini coefficient and ArcGIS analysis software to conduct quantitative and qualitative analysis on spatial distribution and its characteristics of forest parks. The results show that forest parks are weakly condensed distributed in the...
The classical Cayley-Hamilton theorem is extended to Drazin inverse matrices. A new procedure based on this extension for computation of the Drazin inverse matrices is proposed.
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