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.
A major concern of the large-scale deployment of location based services (LBSs) is the safeguards of the user's location data collected by service providers, since person's location information may imply sensitive private information. Most existing techniques have addressed privacy protection mainly for snapshot queries. However, providing anonymity for continuous queries is important, since users'...
Optimal control techniques have been widely applied to the control of active suspensions. However, most of these applications did not consider the nonlinear effects existing in real suspension systems. In this paper, a constrained nonlinear quarter-car active suspension is simplified and modeled as a piecewise affine (PWA) system where the suspension elements may collide with bump stops or the tire...
In order to meet the requirements of real time and effectiveness, a multi-feature front vehicle detection algorithm based on video image is proposed. Firstly, the proposed algorithm uses the edge detector algorithm based on wavelet transform to obtain the road mark for reducing the detection region. Secondly, the threshold segmentation algorithm based on weight factor is used for image segmentation...
High elasticity asphalt sand which also is stress absorbed layer as intermediate layer was put between the deck and the asphalt concrete, slow down stress difference between asphalt concrete and deck through superior deformation coordination ability, could reduced the shearing force, reduced to the bonding power request, thus reduced deck pavement destruction. Asphalt sand and composite structure...
The Steiner minimum tree (SMT) problem is one of the classic nonlinear combinatorial optimization problems for centuries. A novel solution, longest side elimination solution method (LSEM), is proposed in this paper. Firstly, the minimum spanning trees is defined as convex road and external side. Secondly, LSESM is constructed for solving the full SMT by using Melzak geometric composition principle...
The method of cluster analysis is usually adopted in spatial data mining research, and this paper studies the theory of the two popular methods of cluster analysis, investigates the interesting ratio of 108 features and attributes in spatial database, uses these two methods respectively to analyze the statistics data and compare the two analysis to get the close results, at last, classifies the current...
Matching method of heavy truck-rear air suspensions is discussed, and a fuzzy control strategy which improves both ride comfort and road friendliness of truck by adjusting damping coefficients of the suspension system is found. In the first place, a Dongfeng EQ1141G7DJ heavy truck's ten DOF whole vehicle-road model was set up based on Matlab/Simulink and vehicle dynamics. Then appropriate passive...
Here discussed in detail are the methodology of identifying and evaluating in advance any effect, mainly negative, which results from the implementation of a proposed road upgrading project in Ethiopia, any change to the environment or to its component that may affect human health or safety, flora, fauna, soil, air, water, climate, etc. With a review of the Ethiopian environmental policies and legislative...
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.