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.
The paper presents a novel method for online estimation of the junction temperature (Tj) of semiconductor chips in IGBT modules, based on evaluating the gate-emitter voltage (Vge) during the IGBT switch off process. It is shown that the Miller plateau width (in the Vge waveform) depend linearly on the junction temperature of the IGBT chips. Hence, a method can be proposed for estimating the junction...
Ad hoc network and peer-to-peer system typically require many users to participate, to leverage the full benefits of the system. In this paper we consider incentive for opportunitic network . A an example, consider an electronic coupon system, where provider end out coupon , which are pailed from user to user. User receive bonus point for each redemption to encourage participation. We define a general...
Opportunistic communication allows humans equipped with mobile devices to exchange information via a wireless link whenever they are nearby. This work examines the performance of a profile-based data dissemination scheme. We use a 2- step simulation approach which combines realistic user mobility traces with synthetic mobility models. We consider different system configurations and evaluate their...
Privacy preservation has been identified as an important factor to the success and acceptance of ubiquitous computing systems. Traceability, i. e. attributing events and actions to those who caused them, seems to be a directly contradicting goal. However, harnessing sensitive data collected by ubiquitous computing infrastructures for traceability applications in a privacy-respecting manner may clearly...
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.