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.
We studied the degradation of MOCVD-grown InGaN LEDs on Si substrates under constant current stressing. Characterisations using Deep Level Transient Spectroscopy and Electron Energy Loss Spectroscopy on active areas showed that the stressing had generated defects that have trap states at 0.26eV below the conduction band edge (Ec – 0.26eV) and that correlated with the active area's lower nitrogen content...
Abased on the study of the system of management and maintenance of air material with spare parts, we can consider it as a M /M / n/m+ N /m queuing system, and then we manage reliability to find the optimal number of spare of air material.
By analyzing the reality production patterns of supply chain system and the reliability theory, we know that the nodes of reliability structure should be equal to each other, and the demand of the Manufacturer is much more than the production of only one equal node in the supply chain as usual. So this paper will subdivide the different scale enterprise nodes into some equal nodes with the same ability...
Due to the limited transmission range of wireless ad hoc network nodes, multiple hops are usually needed for a node to exchange information with any other node in the network. Thus routing is a crucial issue to the design of a MANET. In this paper, in accordance with the cross-layer design, the concept of load degree is introduced. Based on this metric load degree, a cross-layer design method that...
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.