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This paper displays a case study which accomplishes crop classification of simulated compact polarimetric (CP) SAR and fully polarimetric (FP) SAR images with Random Forest. Since the potential of CP SAR in classification has been illustrated by various researches, we intend to find out which of the polarimetric features are more superior in crop classification, through the importance rank of Random...
Ship classification with spaceborne high resolution synthetic aperture radar (SAR) has wide applications in maritime traffic monitoring, fishing law-enforcement operation, marine security, etc. Deep learning, which has the ability of learning features itself, is successfully used in computer vision and artificial intelligence, and introduced into remote sensing field in recent years. In this study,...
Change detection is a hot issue and is of great significance in remote sensing. The logarithm operation is a valid way to reduce the influence of multiplicative noise in the Synthetic Aperture Radar (SAR) image. However, changed areas with high gray level values will be weakened due to the nature of the logarithmic function. In this paper, a SAR image change detection framework based on visual attention...
Ship detection using synthetic aperture radar (SAR) is an important application in maritime transportation monitoring. However, azimuth ambiguities are inevitably caused by the undersampling of the echo signals, which can be easily mistaken as ship targets in the detection result. To solve the problem mentioned above, a fast object-oriented method for azimuth ambiguities removal based on quantitative...
A novel compact Ultra-wideband (UWB) microstrip patch antenna using planar metamaterial structures is proposed. The metamaterial microstrip antenna has two layers consists of a meshed top patch and a patterned ground plane. The inductances and capacitances coupled due to the ground plane and patterned radiating patch leads to the left handed behavior of the metamaterial. The proposed antenna which...
Parallel processing system has been extensively developed and used in numerous commercial servers for large-scale data analysis. However, the issues of scalability, reliability and efficiency cannot be achieved simultaneously. Motivated by this observation, a Multi-level Parallel Database System based on B-tree structure (MPDBS) is designed for large-scale structured data and semi-structured data...
For sustainable economic development and urbanization in plateau lake basins, city planning needs to balance the tradeoff between urban growth and preservation of ecological environment by adopting intensive land use and maintaining sufficient open space. This research designs and evaluates four land use types in Dianchi Lake basin, Yunnan Province, China: development without constraints, ecologically...
The problem of hot bursty topic detection in user generated texts deserves great attentions with the proliferation of Internet technologies. However, traditional document clustering and probabilistic topic models that were developed for formal news articles are less effective for informal user-generated corpora. In this paper, we provide a graph-based perspective that well reflects the latent pattern...
Vector-quantization can be a computationally expensive step in visual bag-of-words (BoW) search when the vocabulary is large. A BoW-based appearance SLAM needs to tackle this problem for an efficient real-time operation. We propose an effective method to speed up the vector quantization process in BoW-based visual SLAM. We employ a graph-based nearest neighbor search (GNNS) algorithm to this aim,...
Atmospheric turbulence affects the imaging system at a long distance, which causes time-varying blur. Although the blur kernel is unknown, we propose an algorithm to estimate Optical Transfer Function (OTF) for long-exposure atmospheric turbulence blurred images. In this paper we present a novel image prior-isolate edges prior to predict a sharp ‘vision’ of degraded image edges, and utilize the two...
Bone milling is one of the most common operations in various kinds of orthopedical surgeries, such as laminectomy surgery. For safety issue and efficacy, it is very important to recognize the states in milling operation. In this paper, an approach to recognize the states of bone milling is proposed, which identify the cortical tissue layer and cancellous tissue layer. Hilbert-Huang Transform (HHT)...
Researchers exploring problems in image matching tasks face the curse of perceptual aliasing that is originally used in characterizing a sensing process. Perceptual aliasing occurs when the one-to-one mapping relations between world states (objects) and their representations (descriptors) are not maintained. In this paper, we introduce a novel method for quantifying perceptual aliasing. Our method...
Three- and four-hump InGaN-based white light-emitting diodes (LEDs) have been computationally investigated. The investigation includes three-hump LEDs precoated with green- and red-emitting quantum dots (QDs) and four-hump LEDs precoated with green-, yellow-, and red-emitting QDs. Results show scotopic/photopic (S/P) ratios 3.80 and color rendering indices (CRIs) 70 for three-hump LEDs and...
University culture is an important part of human advanced culture. Culture is the soul of university, university just use this kind of culture to cultivate talents. From five dimensions of university cultural development, which is mental culture, matcrial culture, institutional culture, environmental culture and featured items, people use basic fuzzy analysis method to evaluate university cultural...
Cyanoethylated secondary fiber (CSF) were made from secondary fiber(SF) cyanoethylation, and the effect of cyanoethylation on SF and CSF/RHDPE composites were investigated. The reinforcing mechanism of CSF in composites was discussed. Compared with unmodifed fiber, modifed fiber improved interfacial compatibility between CSF and RHDPE, and resulted in enhancing the mechanical properties of CSF/RHDPE...
This paper introduces the design and implementation of a safe Public Key Infrastructure based on Transport Layer Security. Through the establishment of safe connection between each part of the PKI system, it can effectively resist the attack from the internal department. But the use of safe connection increases burden to inquiring certificate. To improve the efficiency of the certificate inquiring,...
With the continuous development of enterprise R&D internationalization in our country, how to conduct an effective evaluation has a significant meaning and and it is also a necessity for the development of enterprise R&D itself. The paper established the evaluation index system of enterprise R&D internationalization from internationalization of R&D capital, organization, activity and...
In order to evaluate the coordinated development of a system, a method named Synchronous Coordination Judgment (SCJ) is designed, which involves such five procedures as following. Firstly, a system is divided into several subsystems and a number of elements are chosen. Then, based on some criteria these elements are divided into three ranks. Secondly, in each subsystem the number of the elements in...
This paper builds the fault diagnosis model and optimizes the input interface of the model by normalizing the initial data of the Oil parameter for the automobile engine, carrying on information fusion and adopting the Adaptive Neural Fuzzy Interference System (ANFIS). The recognition rate of the model reaches 90.26% under the test of field test data. The experiment indicates that the model enjoys...
Coalmine gas explosion is unique to the extremely serious type of disaster. The root cause of gas explosion accident is the Overrun of the gas concentration. Gas concentration is forecast to achieve effective prevention of gas explosion accidents. According to the non-linear of gas concentration and the predictability of the chaotic time series, gas concentration phase space was reconstructed by the...
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