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Bifurcations of solitary wave solutions for (two and three)-dimensional nonlinear partial differential equation in quantum and magnetized plasma by using two different methods
期刊论文
RESULTS IN PHYSICS, 2018, 卷号: 9, 页码: 142-150
作者:
Khater, Mostafa M. A.[1]
;
Seadawy, Aly R.[2]
;
Lu, Dianchen[3]
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浏览/下载:4/0
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提交时间:2019/12/24
Two dimensional nonlinear
Kadomtsev-Petviashvili Burgers equation in quantum plasma
Three-dimensional nonlinear modified
Zakharov-Kuznetsov equation of ion-acoustic waves in a magnetized plasma
Extended simple equation method
Novel (G '/G)-expansion method Traveling wave solutions
Solitary wave solutions
A novel method for aqueous synthesis of CdTe duantum dots.
期刊论文
Spectrochimica Acta. Part A: Molecular and Biomolecular Spectroscopy Section, 2014, 卷号: Vol.123, 页码: 298-302
作者:
Feng, Lei
;
Kuang, Huiyan
;
Yuan, Xiaoyun
;
Huang, Haowen
;
Yi, Shoujun
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浏览/下载:7/0
  |  
提交时间:2019/12/31
A new reduction
A novel method
Cadmium telluride quantum dots
Hydroxylamine hydrochloride
One-pot synthesis method
Structural design of primary mirror subassembly for space telescope (EI CONFERENCE)
会议论文
2nd International Conference on Mechatronics and Applied Mechanics, ICMAM 2012, December 8, 2012 - December 9, 2012, Taiwan
Xu H.
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浏览/下载:47/0
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提交时间:2013/03/25
In order to design a large aperture primary mirror with the diameter of 1150 mm
the parameters impacting on gravity deformation of the mirror were analyzed and discussed in detail
including material selection
diameter-thickness ratio
the number of the support points
location selection and lightweight structure
etc. A novel space mirror structure system was put forward
and its back was opened and supported by six points on back. The dynamic and static and thermal characteristics were analyzed based on the finite element method. Analysis results showed the surface figure accuracy reached to RMS 14.5nm under the action of gravity load along the optical axis direction and the first-order natural frequency was 214Hz which met to the designed indexes requirements. (2013) Trans Tech Publications
Switzerland.
A shape context based Hausdorff similarity measure in image matching
会议论文
5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Infrared Imaging and Applications, Beijing, June 25-27, 2013
作者:
Ma TL(马天磊)
;
Liu YP(刘云鹏)
;
Shi ZL(史泽林)
;
Yin J(尹健)
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浏览/下载:24/0
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提交时间:2013/12/26
The traditional Hausdorff measure, which uses Euclidean distance metric (L2 norm) to define the distance between coordinates of any two points, has poor performance in the presence of the rotation and scale change although it is robust to the noise and occlusion. To address the problem, we define a novel similarity function including two parts in this paper. The first part is Hausdorff distance between shapes which is calculated by exploiting shape context that is rotation and scale invariant as the distance metric. The second part is the cost of matching between centroids. Unlike the traditional method, we use the centroid as reference point to obtain its shape context that embodies global information of the shape. Experiment results demonstrate that the function value between shapes is rotation and scale invariant and the matching accuracy of our algorithm is higher than that of previously proposed algorithm on the MEPG-7 database.
A line mapping based automatic registration algorithm of infrared and visible images
会议论文
5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Infrared Imaging and Applications, Beijing, June 25-27, 2013
作者:
Ai R(艾锐)
;
Shi ZL(史泽林)
;
Xu DJ(徐德江)
;
Zhang CS(张程硕)
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浏览/下载:22/0
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提交时间:2013/12/26
There exist complex gray mapping relationships among infrared and visible images because of the different imaging mechanisms. The difficulty of infrared and visible image registration is to find a reasonable similarity definition. In this paper, we develop a novel image similarity called implicit linesegment similarity(ILS) and a registration algorithm of infrared and visible images based on ILS. Essentially, the algorithm achieves image registration by aligning the corresponding line segment features in two images. First, we extract line segment features and record their coordinate positions in one of the images, and map these line segments into the second image based on the geometric transformation model. Then we iteratively maximize the degree of similarity between the line segment features and correspondence regions in the second image to obtain the model parameters. The advantage of doing this is no need directly measuring the gray similarity between the two images. We adopt a multi-resolution analysis method to calculate the model parameters from coarse to fine on Gaussian scale space. The geometric transformation parameters are finally obtained by the improved Powell algorithm. Comparative experiments demonstrate that the proposed algorithm can effectively achieve the automatic registration for infrared and visible images, and under considerable accuracy it makes a more significant improvement on computational efficiency and anti-noise ability than previously proposed algorithms.
Rotation and scaling invariant feature lines for image matching (EI CONFERENCE)
会议论文
2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011, August 19, 2011 - August 22, 2011, Jilin, China
Zhang Y.
;
Wang Y.
;
Qu H.
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浏览/下载:15/0
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提交时间:2013/03/25
Image matching has been one of the most fundamental issues computer vision over the decades. In this paper we propose a novel method based on making use of feature lines in order to achieve more robust image matching. The feature lines have the properties of rotation and scaling invariance
coined RIFLT(Rotation invariant feature line transform). Experimental results demonstrate the effectiveness and efficiency of the proposed method. Compare with the famous powerful algorithm Scale Invariant Feature Transform(SIFT)
the proposed method is more insensitive to noise. And for certain sequence of images
which contain clear lines
the proposed method is more efficiency. Using the feature lines obtained by our method
it is possible to matching two scene images with different rotation angles
scale and light distort. 2011 IEEE.
Information extraction from laser speckle patterns using wavelet entropy techniques (EI CONFERENCE)
会议论文
MIPPR 2011: Multispectral Image Acquisition, Processing, and Analysis, November 4, 2011 - November 6, 2011, Guilin, China
Wang X.-J.
;
Li X.-Z.
;
Su S.-C.
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浏览/下载:25/0
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提交时间:2013/03/25
A novel speckle patterns processing method is presented using multi-scale wavelet techniques. Laser speckle patterns generated from the sample contained abundant information. In this paper
we propose a method using wavelet entropy techniques to analyze the speckle patterns and exact the information on the sample surface. In our case
we used this approach to test the solar silicon cell surface profiles based on the sym8 orthogonal wavelet family. According different wavelet entropy values
the micro-structure of different solar silicon cell surfaces were comparative analyzed. Furthermore
we studied the AFM and reflective spectra of the wafer. Results show that the wavelet entropy speckle processing method is effective and accurate. And the experiment proved that this method is a useful tool to investigate the surface profile quality. 2011 SPIE.
Multi-focus image fusion algorithm based on adaptive PCNN and wavelet transform (EI CONFERENCE)
会议论文
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Wu Z.-G.
;
Wang M.-J.
;
Han G.-L.
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浏览/下载:34/0
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提交时间:2013/03/25
Being an efficient method of information fusion
image fusion has been used in many fields such as machine vision
medical diagnosis
military applications and remote sensing.In this paper
Pulse Coupled Neural Network (PCNN) is introduced in this research field for its interesting properties in image processing
including segmentation
target recognition et al.
and a novel algorithm based on PCNN and Wavelet Transform for Multi-focus image fusion is proposed. First
the two original images are decomposed by wavelet transform. Then
based on the PCNN
a fusion rule in the Wavelet domain is given. This algorithm uses the wavelet coefficient in each frequency domain as the linking strength
so that its value can be chosen adaptively. Wavelet coefficients map to the range of image gray-scale. The output threshold function attenuates to minimum gray over time. Then all pixels of image get the ignition. So
the output of PCNN in each iteration time is ignition wavelet coefficients of threshold strength in different time. At this moment
the sequences of ignition of wavelet coefficients represent ignition timing of each neuron. The ignition timing of PCNN in each neuron is mapped to corresponding image gray-scale range
which is a picture of ignition timing mapping. Then it can judge the targets in the neuron are obvious features or not obvious. The fusion coefficients are decided by the compare-selection operator with the firing time gradient maps and the fusion image is reconstructed by wavelet inverse transform. Furthermore
by this algorithm
the threshold adjusting constant is estimated by appointed iteration number. Furthermore
In order to sufficient reflect order of the firing time
the threshold adjusting constant is estimated by appointed iteration number. So after the iteration achieved
each of the wavelet coefficient is activated. In order to verify the effectiveness of proposed rules
the experiments upon Multi-focus image are done. Moreover
comparative results of evaluating fusion quality are listed. The experimental results show that the method can effectively enhance the edge details and improve the spatial resolution of the image. 2011 SPIE.
Dynamic optimization of valveless micropump (EI CONFERENCE)
会议论文
2011 16th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS'11, June 5, 2011 - June 9, 2011, Beijing, China
Deng Y. B.
;
Wu Y. H.
;
Xuan M.
;
Korvink J. G.
;
Liu Z. Y.
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浏览/下载:16/0
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提交时间:2013/03/25
For the first time
this paper reports on an effective topology optimization method to improve the output net flux for valveless micropumps. The micropump considered here is actuated by the vibration of membranes and can generate a net flow along the optimized rigid fluidic channel. The detailed layout of the micropump channel is optimized with respect to a number of factors which influence the output net flux of liquid
such as the number of actuation elements
the positions of actuation elements
the driving phase differences and the driving frequency. Accordingly
the layouts of several novel valveless micropumps are presented. 2011 IEEE.
Study on medical X-ray coherent scatter imaging and processing based digital flat detector (EI CONFERENCE)
会议论文
3rd International Conference on BioMedical Engineering and Informatics, BMEI 2010, October 16, 2010 - October 18, 2010, Yantai, China
Liu J.
;
Lv Y.
;
Li B.
;
Liu T.
;
Hu B.
;
Zhao J.
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浏览/下载:22/0
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提交时间:2013/03/25
It is introduced a novel imaging technique for medical diagnostic X-ray coherent scatter in this paper. A set of experimental equipment for X-ray coherent scatter imaging was set up with X-ray digital flat detector and medical diagnostic X-ray source. According to this equipment
the scatter images obtained are made of some circles with the same center. It is vital to calculate the energy template to classify the different samples. It is difficult to separate them using the traditional threshold method due to noise and overlapped shadow. In this paper
the image was transformed a binary image by using K-Means algorithm and Mathematical Morphology Methods. The effective region was extracted from the binary image inside the orthogonal energy projection space
then to calculate the centroid of rings. Consequently the curve of the energy distribution was built. The experiment results show that our method is reasonable and feasible. The technique will have wide foreground of application .Besides the imaging of human bone content
it can be used for various imaging of tissue and organs in biology. 2010 IEEE.
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