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.
Deconvolution is known as an ill-posed problem. In order to solve such a problem, a regularization method is needed to constrain the solution space and find a plausible and stable solution. In practice, it is very computation intensive when using cross-validation method to select the regularization parameter. In this paper, we present an adaptive regularization method to find the optimal regularization...
Using data of rural China in 1978 and 2008, the author built two independent models: Gini coefficient model and rural residents' income model, and put forward a principle that the economic development of a country tends to choose measures or policy variable which can both narrow income distribution gap and increase rural residents' income. Through model analysis and further contrastive studies, we...
In this paper, we propose an unconstrained active contour model combining edge and region information for image segmentation. The new method achieves the segmentation by alternating the regularization term and the data-fidelity term. We use a morphological approach to the regularization term which is the most time-consuming in the energy function. The proposed method is robust to noise and avoids...
The cost from the servicing of warranty depends on the reliability of the product, the maintenance actions, and the warranty strategy. In this paper, we focus on a repair strategy based on imperfect repair for two-dimensional (2D) warranty. We consider a rectangular warranty region with two measures (age and usage) and divide it into three disjoint sub-regions. Only the first failure in the second...
Implicit LES results of a cylinder flow with high order numerical methods in a coarse and a refined grid were compared. The weighted essentially non-oscillatory (WENO) scheme is employed for convective flux while central differencing schemes are used for viscous terms. Several modifications were made to the high order accuracy scheme. Results show that the high order accurate schemes adopted in this...
In this paper, a new algorithm based on the Tschirnhaus transforms is developed to reduce the computation complexity of the 10-order line spectrum pairs (LSP) frequencies. The first step of the proposed algorithm is to derive a quartic equation from the 1st derivative of the given 5-degree LSP polynomial. Then the extremes of the 5-degree LSP polynomial can be found by applying the Tschirnhaus transform...
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.