The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Examination and identification of tool marks is traditionally carried out under a comparison microscope by forensic scientists. This manual process is dependent on the experience of the examiner, including subjectivity. In order to improve the reliability and repeatability of the process in criminal investigation and trial, automation and quantification for tool mark examination is demanded. Shear...
Correlation filters have recently made significant improvements in visual object tracking on both efficiency and accuracy. In this paper, we propose a sparse correlation filter, which combines the effectiveness of sparse representation and the computational efficiency of correlation filters. The sparse representation is achieved through solving an ℓ0 regularized least squares problem. The obtained...
The author created the improved Grey Correlation-TOPSIS used it for security evaluation of petroleum resources through the integration of the following methods such as AHP, TOPSIS and Grey correlation. The improved Grey Correlation-TOPSIS replaces Euclidean distance and grey correlation with new relative approximation coefficient. Thus, this method presents more explicit physical meaning and dual...
Embedded zerotree (EZW) and SPIHT coding, introduced by J.M.Shapiro and Amir Said, are very effective and being used in many fields widely. Embedded zero-tree wavelet encoding is currently the most advanced image coding methods, In this paper, brief explanation of the principles of SPIHT was first provided, and then, some improvement of SPIHT algorithm according to experiments was introduced. For...
Based on a theorem on the construction of a permutation, we propose an evolutionary algorithm that can efficiently design S-boxes with good cryptographic properties like high nonlinearity, low autocorrelation, low difference and high algebraic immunity. Furthermore, we observe that the polynomial representing a concrete designed S-box over a small field can be generalized to that over a large field...
Social unconventional emergencies not only bring disaster to human life and living environment, but also cause losses to the country and the people. What's more, their occurrence tends to cause series of chain reactions and inspire lots of social problems, thus likely to break the social balance, and lead to national instability and social disharmony. In this paper, "concern degree model"...
This paper exhibited the change process of the delta wetland and then discussed the factors that related to wetland degradation. Based on the implementation of wetland restoration, effects on wetland process were analyzed. Results showed that before restoration, wetland landscape tended to fragmentation and biodiversity decreased, while after restoration, wetland ecosystem was objected to develop...
Free-space optical (FSO) links offer an attractive alternative to the radio frequency channel for the purpose of transmitting data at very high rates. A major impairment in FSO links is the turbulence-induced scintillations of an optical wave. Spatial diversity, which involves the deployment of multiple laser transmitters/receivers, can be used over FSO links to reduce the turbulence-induced scintillations...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.