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Sea-crossing bridges are exposed to great waves. The wave induced dynamic effect on the structural response of the pier was carefully studied in this paper. The pier of Pingtan Strait railway bridge was taken as the example structure. The modal and dynamic response of the example pier under regular wave loadings were carried out using finite element software USFOS. The dynamic and static response...
We consider tracking of a target with elliptical nonlinear constraints on its motion dynamics. The state estimates are generated by sensors and sent over long-haul links to a remote fusion center for fusion. We show that the constraints can be projected onto the known ellipse and hence incorporated into the estimation and fusion process. In particular, two methods based on (i) direct connection to...
File transfers between the decentralized storage sites over dedicated wide-area connections are becoming increasingly important in high-performance computing and big data scenarios. Designing such scientific workflows for large file transfers is extremely challenging as they depend on the file, I/O, host, and local- and wide-area network subsystems, and their interactions. To gain insights into file-transfer...
This paper proposes tower grounding resistance measurement method on the basis of three-electrode method and clamp meter, explains the structure of measuring device including host measurement structure and Rogowski coil current sampling structure, which host is used for grounding resistance test and Rogowski coil for Tower foot failure assessment. This paper analyses the innovative of device by high...
The network infrastructures have been rapidly upgraded in many high-performance networks (HPNs). However, such infrastructure investment has not led to corresponding performance improvement in big data transfer, especially at the application layer, largely due to the complexity of optimizing transport control on end hosts. We design and implement ProbData, a PRofiling Optimization Based DAta Transfer...
In order to study the influence on the statistical distribution characteristic of dynamic radar cross section (RCS) from aircraft flight speed, firstly through analyzing aircraft aerodynamic, setting track model, calculating attitude angle and electromagnetic simulation, the three groups of dynamic RCS sequence were obtained under different flight speed. And the fitting curves of dynamic RCS sequence...
In recent years, 3-dimension convolutional neural networks (3D CNNs) have been widely used for video analysis, 3-dimension geometric data and medical image diagnosis. While conventional CNNs are computationally intensive, 3D CNNs push the computational requirements into another level, since each computation depends on multiple image frames. This paper describes a novel hardware architecture for a...
The influence of two short equivalent lines on the accuracy of the asymptotic method for electromagnetic field coupling to transmission line (TL) at high frequency is investigated. Firstly, the induced current distribution along the TL in terms of different lengths of two short lines is analyzed. It is indicated that the calculated induced current along the line by using asymptotic method is not reliable...
3D packaging using through silicon via (TSV) technology is becoming important in IC packaging industry. The polymer material as insulation material was fabricated by the spin-coating or spray-coating process. And the polymer insulation can relax some of the stress induced and makes the process more convenient compared with CVD. Therefore, it is the most cost effective technology for the wafer level...
The problem of robust registration of 3D point sets disturbed by noise for free-form surface inspection is considered. In this research, M-estimation methods are used to eliminate the effects of outliers, and a robust extension of tangent-squared distance minimization (TDM) using M-estimation is proposed. The proposed algorithm is compared with standard TDM method, iterative closest point (ICP) method...
In order to handle positions and orientations of tool with a unified manner in 5-axis NC machining, a tool path planning method based on double quaternion was proposed. With the identity of cutter points and the points in double quaternion space, the mapping from position and orientation points in 3D space to elements of double quaternion space is constructed. The interpolation problem of position...
To meet the growing demands of high productivity, high flexibility and high accuracy in different manufacturing areas, a PC-based open CNC system architecture for multiple intelligent functions based on TwinCAT and .NET is proposed in this paper. The CNC system consists of NCK system, peripheral perception system, and .NET HMI system which communicate with each other by TwinCAT ADS and TCP/IP protocols...
In NC machining of free-form surfaces, low efficiency, unstable machining process and poor quality of the finishing surface occur frequently for the usage of numerous micro segment trajectories. To address these challenges, a B-spline smooth compression (BSC) algorithm of consecutive micro segment trajectories (CMSTs) is proposed. In this algorithm, CMSTs are first extracted according to geometric...
Dedicated wide-area network connections are increasingly employed in high-performance computing and big data scenarios. One might expect the performance and dynamics of data transfers over such connections to be easy to analyze due to the lack of competing traffic. However, non-linear transport dynamics and end-system complexities (e.g., multi-core hosts and distributed filesystems) can in fact make...
An asymmetric spherical-shape structure strain sensor based on few mode fiber is proposed and demonstrated. It is fabricated by waist enlarge two splicing spots between a section of few mode fiber and two single-mode fibers. Fiber core mode interfere with cladding mode due to the excite and couple function of spherical-shape structure, respectively. Based on the double beam interference principle,...
In this paper, we consider a scenario where sensors are deployed over a large geographical area for tracking a target with circular nonlinear constraints on its motion dynamics. The sensor state estimates are sent over long-haul networks to a remote fusion center for fusion. We are interested in different ways to incorporate the constraints into the estimation and fusion process in the presence of...
This paper presents an observer-based dynamic feedback control design for a linear parabolic partial differential equation (PDE) system, where a finite number of actuators and sensors are active over part thereof and at specified points in the spatial domain, respectively. In the proposed design method, a Luenberger-type PDE observer is first constructed by using the non-collocated pointwise measurements...
Through the analysis for the current urban road network and the urban traffic control schemes, establish the model of the average of vehicle up-time in road network. Then, by use for reference thinking of natural selection of genetic algorithm improved the minimum value problem of particle swarm optimization algorithm. Hereafter, the model was optimized by the improved particle swarm optimization,...
Synthetic ester liquids are increasingly considered as alternatives to conventional mineral oils, due to their biodegradability, high flash/fire points and superior moisture tolerance. This high interest has led to growing research attention on streamer and breakdown performance of synthetic ester liquids. Large effort has been made to characterise streamer phenomena of synthetic ester liquids in...
In this paper, dimensional analysis is adopted to study fluid flow distribution and temperature distribution in disc-type ON (oil natural) cooled transformer windings. Theoretical analysis on the thermal driving force and the pressure drop in the liquid circulation loop is also performed to determine the total liquid flow rate in the transformer. The thermal performance of three different liquids,...
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