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Electrocardiogram (ECG) records electrical activity of the heart spreading through the heart muscle to make the heart contract. Recently ECG has been captured attention as biometric feature due to its uniqueness and large reliabilities for human identifications. In this study we aimed to verify the conservative ECG of human in their activities to ensure whether it is suitable to be used as biometric...
Typical matching parts of servo valve have high precision requirement and strict fit tolerance, which reduces the matching quality and practical performance. The traditional fit quality control method of the matching parts is based on expert experience and tolerance analysis, which is subjective and indirect. In this paper, a novel method was proposed to determine the matching quality before precision...
The paper investigates the problem of degenerative model of board-level solder joint subjected to harmonic vibration load with the constant frequency fixed amplitude. Based on the experimental monitoring signal, square root amplitude, waveform factor and kurtosis factor can be used as the degradation quantity by analyzing ten amplitude domain statistics' correlation and significance. Square root amplitude...
There is a growing concern about correlation analysis of natural environment test and laboratory accelerated test, especially test about corrosion of metal, nonmetal and coatings. This paper will concentrate on correlation analysis from simulation ability, accelerating ability and reproducibility. As an illustration, exposure test in marine atmospheric environment and salt spray test in laboratory...
When clustering incomplete datasets, data on cluster border (border data) are more likely to be misclassified. Aiming at this problem, the proposed algorithm focuses on the re-classification of “suspected misclassified” border data (abbreviated as SM border data). Based on the preliminary clustering results of classical FCM-based algorithm for incomplete data and the KNN (k nearest neighbor) principle,...
The comprehensive index system is a prerequisite and basis for ensuring the scientific performance of the product performance evaluation, so, the screening of the index is the necessary link in the construction of the index system. The paper regards the armored vehicle PHM system as a special product, aiming at the problem that the redundancy of the primary index set of the armored vehicle PHM system...
Variables in chemical process are mutually affected and chemical process failures are often caused by the chain effect of a number of variables, so some minor changes in variables can often lead to an unknown fault. In this paper, the multivariable correlations are studied from the perspective of the whole process, and PCC (Pearson Correlation Coefficient) is used to calculate the correlation coefficient...
In this paper we present the research conducted on synchronous measurements of biosignals. The experiment was conducted to evaluate the possibility of estimating vital signs based on eye tracking. Method: The eGlasses platform was used for acquisition of ECG, respiration rate, eye and pupil movement and blood pressure. Data were acquired in three 5 min. intervals during which a subject was performing...
Dempster-Shafer (D-S) evidence theory is widely used for information fusion field. However, one of the main issues of D-S evidence theory is that, when large amount of focal elements in Basic Probability Assignment (BPA) are available, the fusion of BPA requires high computational cost and long computing time. This problem greatly limits its application. In this paper, a novel method for approximating...
In this paper, the effect of air pollutants (PM2.5, PM10, SO2, NO2, CO and O3) on the Air quality index (AQI) from Jan. to Feb., 2016 in Jinan was studied by using correlation analysis and path analysis. The results of the correlation analysis show that AQI has a negative correlation with O3, and has a positive correlation with PM2.5, PM10, SO2, NO2 and CO. Meanwhile, PM2.5, PM10, SO2, NO2 and CO...
Fault diagnosis of the wind power system is a common problem in the routine maintenance of the wind farm. However, most researches and practical applications focus on separate components, which do not take correlations of different components into consideration. This paper presents a novel two-layer Probabilistic Signed Directed Graph (PSDG) method for the fault diagnosis of the overall wind power...
In the past few years, social tags and tagging systems have gained large momentum for service categorizing and indexing content on the Web. Tags are used freely, which leads a random correspondence between the tags and the services, which affects the performance of the tag in the search and applications. We propose a novel scheme for tag predicting based on graph, aiming to automatically sort the...
Most of the vegetation growth in Mexico shows clear responses to the availability and abundance of surface water which can almost exclusively be linked to rainfall. This study employs four years of time series with daily precipitation and modeled surface reflectance at a spatial resolution of 0.05° which were analyzed for lag-dependent linear serial correlation. Positive lags of, on average, 1 to...
The performance or output current of a transformer is subject to the load that it is connected to, which may be full, empty, or unusually excessive. Sometimes an overload may be unavoidable, such as in the case of a full load or an above normal load under which the transformer may carry an excessively high current and may result in a huge loss in the form of excessive heat. This will undoubtedly affect...
Hand gesture is one of a powerful means of communication among human. Sign language is an essential and natural expressive mean of communication especially for the deaf people. The article proposes a technique for the recognition of Lao alphabet sign language. The technique of image processing, that is Histogram of Oriented Gradients (HOG), is applied in order to extract characteristics of the hand...
Transmission of images from satellite to ground is exposed to threats that can damage the confidentiality of data. The Advanced Encryption Standard (AES) is slowly emerging in modern space missions. In this paper, a modification to the AES-Counter mode is proposed to increase the level of security and to enhance the performance of image encryption. The modification is done by combining the GEFFE Generator...
This paper aims at the comparison of the network power for Pearson-Hamming networks built using the chi-squared functional set, and Bayes-Hamming networks built using the hyperbolic functional set. To configure these networks a correlation matrix of biometric data is calculated. At the nest step the data are sorted. Low-correlated data are converted with Pearson-Hamming networks, high-correlated data...
Variations in sensor data collected from equipment have been widely analyzed by using anomaly detection methods for predictive maintenance. Our experience shows that correlations between sensors effectively predict failures because the correlations usually reflect the status of equipment with higher sensitivity. In this paper, we present a method that exploits correlations between sensors for pre-processing...
This paper proposes a statistical analysis of photovoltaic output power and solar radiation for a photovoltaic system located in Iasi, Romania. The photovoltaic system performance can be analyzed using the correlation coefficients between the photovoltaic output energy and amount of global irradiance during different reference periods.
This study continues some previous research done on the hand physiological tremor (PT) signal - a motor phenomenon that we treated as a potential window to better understand the dynamical structures underlying the human visuomotor circuits. In order to understand how visual inputs processing interacts with limb motor system, two intermittent light stimulation (ILS) paradigms were implemented and the...
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