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Process operating performance assessment judges the optimal degree of the production online. The assessment result guides the production to achieve the maximal benefit. Hence, the study on operating performance assessment is of great significance. To extract the most correlations between the process variables and the assessment indices, an operating performance assessment method based on canonical...
Dexterous object manipulation requires suitable control of grip force, load force and digit positions. To keep an object stable in the air, force magnitude, force direction and digit positions should be coordinated, producing compensatory torque that could balance the external torque and maintain a minimal object roll. Six males and 6 females enrolled in the study. In the experiment, subjects were...
Brain tumor segmentation from magnetic resonance images is a critical step for early tumor diagnosis and treatment. However, accurate and general segmentation of brain tumor is still a challenging task due to complicated characteristics of brain tumor in magnetic resonance images. To solve this problem, we proposed a novel method for brain tumor segmentation based on features of separated local square...
Order-batching is a common practice in orderpicking» which can reduce the total picking time if the orders have many relevant in Multi-Shuttle Warehouse System. In this paper, the performance of different order-batching methods that are made up of one seed-order selection rule and one accompanying-order selection rule is investigated. A seed-order selection rule selects the first order (i.e. the seed...
In order to balance the number of outbound and inbound tasks of each aisle and improve the working efficiency of the multi-tier shuttle system, three principles of storage location assignment were put forward: the principle of minimum correlation degree, the principle of equalization of product items and the principle of equalization of tasks, which were expected to be followed when storing products...
Diabetes is one of the most prevalent diseases worldwide, and hundreds of millions of patients are suffering from diabetes and its serious complications. Early detection and early treatment are urgent needed for clinical diagnosis of diabetics. In this work, we establish a gene coexpression network framework to identify biomarkers of transcripts with highly different gene coexpression patterns in...
The purpose of this study is to determine the sleep status of college students. 12 volunteers(mean ± SE: 22 ± 2 yr, 170 ± 10cm, 61 ± 16 kg) take part in the research. The sleep situation are got by the waistband sleep monitor system. The average heart rate of the whole night, the average breath rate of the whole night, bed time, get up time, onset latency, total sleep time are monitored. These important...
Load forecasting is the basis of the design and implementation of the control strategy of the combined cooling heating and power (CCHP) system, and the precision affects the comprehensive energy efficiency of the system directly. In this paper, the gray relational analysis method is used to indicate the strong coupling relationship among the loads of heating, cooling and electricity in the system...
Communication system commonly exists cochannel interference, which is the main reason why the accuracy of directions-of-arrival (DOAs) estimation is low especially in an alpha stable distribution noise environment. Though the second-order DOA estimation algorithms work well in Gaussian noise, while the methods based on fractional lower-order statistics may do well but which depend on much of apriori...
With the increasing stress in working and studying, mental health becomes a major problem in the current social research. Generally, researchers can analyze psychological health states by using social perception behavior. The speech signal is an important research direction in this domain. It objectively assesses the mental health of social groups through the extraction and fusion of speech features...
The purpose of this study was to explore the relationship between grip strength and inter-muscular coordination of the forearms and hands. Twenty-four healthy young volunteers participated in the experiment. The subjects were instructed to grip hydraulic hand dynamometer with five force levels-maximal voluntary contraction (MVC), 70% MVC, 50% MVC, 30% MVC and without any contraction. Muscle activity...
This study aims to meet requirement of rapid detection of the TBM (tunnel boring machine) tool's wear state. To this end, the local region-growing method based on normalized cross-correlation was proposed to detect the block slag on belt conveyor and the least-square method for ellipse fitting was employed to measure the size. Firstly, the monocular color image was decomposed into two gray-scale images...
In this paper, we introduce the diversity of extortion by setting individuals' extortion capacities related to their degrees and study the evolution of cooperation on the heterogeneous BA scale-free network with the normalized payoff mechanism. We find that when individuals' extortion factors are negatively correlation with their degrees, extortioners can act as catalysts to make cooperation dominate...
For the deficiency of the incidence model, the incidence model based on the included angle of vectors is presented and is extended to the panel data. In order to describe the incidence between the sequences, which is projected to n-dimensional vector. The included angle of vectors reacts the difference of the sequences in similarity. The incidence model based on the included angle of vectors is defined,...
A fault division method based on fault current limiting technology was proposed to solve the problem of simultaneous commutation failure (CF) in multi-infeed HVDC transmission system. The relationship formula between the reactance of fault current limiter (FCL) and the voltage drop of non-fault point were deduced. And it's proved that FCLs can compensate the voltage reduction of non-fault point to...
A monocular vision detection system was designed for multipoint pulse signals detection. The system consists of three parts. The first is pulse image acquisition device, which is used to collect dynamic pulse images. The second is multipoint pulse signals extraction algorithm that is using suitable digital image processing methods to process the collected pulse image sequence, and adopting monocular...
In this paper the power requirements of deception jamming in the signal acquisition phase of BeiDou navigation receiver are discussed in two cases. In the first case, the deception jamming signal is released before the start of the receiver, with the method of analyzing the signal acquisition probability model and the acquisition correlation peak, the conclusion is obtained that the effective power...
PLS is widely used in the quality control process system, but it has poor capability in some strong local nonlinear system for fault diagnosis. To enhance the monitoring ability of such type fault, a novel statistical model based on global plus local projection to latent structures (GPLPLS) is proposed. Firstly, the characteristics and nature of quality-related global and local partial least squares...
This paper investigates the performance of ejectors with a streamline structure. The parabola fitting is adopted to simulate the ejectors streamline structure and the effects of parabola fitting structure on ejectors are studied using the Computational Fluid Dynamics (CFD) technique. The contrast simulations of the parabola models and the original model are conducted in which the entrainment ratio...
A new high efficient hierarchical pathfinding algorithm named Floyd-A∗(FA∗) is presented based on grid map of indoor environment for a mobile service robot. In FA∗, an algorithm for key points extraction and region partition is designed according to distinction of indoor environment so that the representation of abstract map about indoor environment is more effective for high speed pathfinding. In...
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