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The development of foreign trade is inseparable from the transportation. Chongqing, as a southwest inland city, plays an important role in YUXINOU international railway. And it also has made a considerable progress on foreign trade after decades of the reform and opening-up policy. This paper takes the YUXINOU as the study subject and uses the econometric model analysis method to study the relationship...
The application of the spaceborne stripmap range sweep synthetic aperture radar (SS-RSSAR) is limited by its fixed azimuth beam pointing. In this paper a more advanced spaceborne azimuth-range sweep synthetic aperture radar (ARSSAR) is proposed to illuminate the region of interest (ROI) by simultaneously sweeping the beam in range and in azimuth. In this case, more balances of the azimuth resolution...
The Alzheimer's Disease (AD) has become a major threat of human health with its incidence rate ascending year by year. Early diagnosis of AD is very important for AD patients to keep life quality. The resting-state fMRI (rs-fMRI) which precisely reflects the brain changes on the resting state of individuals provides a quantitative approach, which has been introduced to distinguish AD patients from...
Acoustic emission (AE) technique is an emerging nondestructive inspection method for rail detection. But the detection distance for AE sensors is too short and it's infeasible to monitor an entire railway. As a replacing scheme, it's effective to place the sensors in the wheels, which make the study of wave propagation between elastic bodies significant. In this paper, the model of wheel-rail coupling...
This paper investigates the fault detection and post-filter design issues for a class of discrete-time switched systems. The considered switching signals are of persistent dwell time characteristic, which are more general than the widely used average dwell time even dwell time switching properties. First of all, an observer-based residual generator is formulated, and the asymptotic stability of the...
This paper reports the design and characterization of a CNT based field emission x-ray source that affords a high spatial resolution. This work builds on a method reported at IEEE MEMS 2016, which was mainly focused on the fabrication process and material characterization. This paper will unveil more experimental results using for micro focus field emission x-ray source. A simplified imaging system...
On a crowdsourcing platform, in order to cheat for rewards or sabotage the crowdsourcing processes, spam workers submit numerous random and erroneous answers to the tasks published by honest requesters. This type of behaviours extremely reduces the enthusiasm of honest users, which may lead a crowdsourcing platform to a failure. To defend the threats from spam workers, reputation-based defense mechanisms...
In the opportunistic network with social attributes, message forwarding based on social relations often has good communication efficiency. The existing opportunistic network routing algorithms are based on the static social relations. But in practical application scenarios, the moving nodes make the network social relations dynamic evolution with time, so the social relation of the opportunistic network...
The traffic safety information is essential for intelligent transportation, as for the current collected traffic information, the effective utilization rate is relatively low, it is also difficult to evaluate the information availability and effectiveness, so developing a good traffic information warning platform is very significant for public travelers. Based on this, using the typical expressway...
Cloud computing brings a rapid way for enterprises to launch a new software, which needs lower cost compared with self-purchased infrastructure. More and more enterprises compact their business software as services into cloud platform to the users. In service auction, the service provider aims to make more profits from the service it provides, but the service consumer hopes to select a good quality...
With the development of web service technology, identifying and discovering the users with similar preferences have an important significance to service selection and service optimization in the service environment. In order to divide the users into groups based on their preference similarity in the process of service selection, a combination-based clustering algorithm, named AAK, is presented in...
This paper reports on a novel implanting micromachining technology. By using this method, for the first time, we could implant both ends of nano-scale materials into micro-scale metal materials at room temperature. Micro gas sensor with CNT bridging a pair of Au electrodes was fabricated. Direct contact and strong interactions between CNTs and the electrods contribute to its stable electronic performance...
We present a new way to combine the propagated flow in image pyramid and dense correspondences from descriptor matching for large displacement optical flow estimation. Because the matches and the flow propagated from the coarser level in image pyramid are possibly wrong, our method uses color-based weighted linear interpolation to reduce the wrong initial flow and alleviate over-smoothing, instead...
The next few years promises drastic improvements to global navigation satellite systems. USA is modernizing GPS, Russia is GLONASS, Europe is moving ahead with its own Galileo System, and China is expanding its BeiDou system from a regional navigation system to a full constellation global navigation satellite system known as BeiDou-2/Compass. Chinese BeiDou satellite navigation system constellation...
This paper presents a novel approach to compute sparse optical flow field, which is different from the traditional feature matching methods such as SURF. The approach consists mainly of three novel parts. First, the improved PatchMatch that is tailored to sparse optical flow computation is used to generate NNF quickly. And the NNF is smoothed using a threshold filtering rather than global optimization...
VibSense pushes the limits of vibration-based sensing to determine the location of a touch on extended surface areas as well as identify the object touching the surface leveraging a single sensor. Unlike capacitive sensing, it does not require conductive materials and compared to audio sensing it is more robust to acoustic noise. It supports a broad array of applications through either passive or...
Photoacoustic tomography has the unique capability of visualizing optical absorption in deep tissues up to several centimeters, while still maintaining high acoustic spatial resolution. However, the linear array based photoacoustic tomography suffers from the limited view challenge due to its finite aperture size, so the quality of the reconstructed image will be degraded by the limited-view artifacts...
Rail health monitoring plays an important role in the railway system, and how to accurately obtain the rail state is very significant for the railway safety. This paper proposes an improved method of rail health monitoring based on convolutional neural network (CNN) and probability analysis of multiple acoustic emission (AE) events. By tensile testing machine, AE signals with safe and unsafe states...
The performance of model-based control system depends a lot on the model fidelity. The mismatch between the model and the true plant plays an important role in poor control quality of the closed-loop control system. In this paper, a new statistical online model quality monitoring method for closed-loop systems is presented, which monitors model quality only requiring the real-time routine operation...
Android developers commonly use app obfuscation to secure their apps and intellectual property. Although obfuscation provides protection, it presents an obstacle for a number of legitimate program analyses such as detection of app cloning and repackaging, malware detection, identification of third-party libraries, provenance analysis for digital forensics, and reverse engineering for test generation...
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