Papers by Keyword: Mobility

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Authors: Zhao Huan Tang, Kai Zhou Tan, Wei Cui, Bin Wang
Abstract: Based on SiGe virtual substrate technology, a high-performance strained NMOS is obtained. By growing 2~3μm SiGe relaxed layer, 100~200nm strained SiGe layer and 20nm strained silicon layer, and also forming a P-well by multiple implantation technology, a surface strained NMOS is fabricated. Finally, Measured results shown that drain-source current and the low field maximal mobility of the strained NMOS are enhancement of up to 190% at Vgs=3.5V, which is almost three times to the value of common Silicon NMOS and is also better than the 170% reported in public.
Authors: Matthieu Florentin, Mihaela Alexandru, Aurore Constant, Bernd Schmidt, Philippe Godignon
Abstract: This work presents the 10 MeV protons irradiation effects on 4H-SiC MOSFETs at different fluences. MOSFETs main electrical parameters, such as the channel mobility (µEFF), threshold voltage (VTH), transconductance (gm) and subthreshold current, were analyzed using the time bias stress instability (BSI) technique. Applying this method allowed us to study the effect of carriers interaction with generated interface traps, whether in the bulk or at the interface. Improvements, such as VTH stabilization in time and a significant increase of the µEFF at high fluencies, have been noticed. We assume that this behavior is connected with the atomic diffusion from the SiO2/SiC interface, towards the epilayer during proton irradiation. These atoms, in majority Nitrogen, may create other bonds by occupying various vacancies coming from Silicon and Carbon’s dangling bond. Therefore, by enhancing the passivated Carbon atoms number, we show that high irradiation proton could be a way to improve the SiO2/SiC interface quality.
Authors: Toshiya Yokogawa, Kunimasa Takahashi, Osamu Kusumoto, Masao Uchida, Kenya Yamashita, Makoto Kitabatake
Authors: Jia Tai Gang, Peng Yan Shi, San Shan Gang
Abstract: A cellular automata model with inhomogeneity and mobility was presented. The inhomogeneity in individuals’ behaviors was considered by assigning the distance on their neighbors, varying levels of infectivity and susceptibility. The individual mobility was reflected by random walk cellular automata. The proposed model can serve as a basis to simulate influenza A (H1N1) based on real data. We studied the effect of two population movement parameters on the epidemic propagation: the percentage and the max-distance of population movement. The results show that the epidemic spreading is more sensitive to the former. The infected individuals are positive growth while the percentage of population movement increases. And the number of infected individual eventually stabilizes in the case of plotting the relation of the max-distance against the infected.
Authors: Yong Qiang Xu, Ming Yin
Abstract: The mobile grids bring some additional features into the grid, such as mobility, energy-constrained, etc. And the task scheduling becomes a more challenge thing. We propose a mobile grid task scheduling model considering the mobility of both user and resource, and the resource energy consumption. Through analyzing the architecture of mobile grid, a mathematical model is built to calculate the average distance between the resource and Base Station (BS). Then, it can decide which mobile grid the mobile devices are apt to stay in, which can deal with the mobility of mobile devices. On the other hand, the resource energy consumption is also considered, which ensure that the resources have enough energy to finish the task. As a result, the task can be assigned to the best resources in the suitable mobile grids. The failures may happen in the task scheduling because of many unpredictable factors. So the fault-tolerance scheme based on the notion of replication is proposed.
Authors: Yan Huang
Abstract: Solute drag theory is critically revisited and an alternative approach is presented to account for the effect of solute elements on grain boundary migration during annealing. A fundamental new concept is introduced in the model that, in the linear range of irreversible thermodynamics, solute atoms segregated in a grain boundary will not lag behind when the boundary migrates. While lagging behind is the very essential assumption for the solute drag theory. Instead of blaming the lagging behind, the mobility drop due to solute addition is attributed to the decrease in boundary energy as a result of boundary segregation. According to this model, grain boundary mobility is dependent on solute concentration rather than migration rate. The predictions of the model are compared with experimental results, with a good agreement.
Authors: Anthony D. Rollett
Authors: Ji Sheng Han, K.Y. Cheong, Sima Dimitrijev, Michael Laube, Gerhard Pensl
Authors: Hyun Jong Cha, Jin Mook Kim, Hwang Bin Ryou
Abstract: A mobile ad-hoc network is a method of communication between different nodes (mobile devices) without the use of base stations, which are used in wired networks. In a Mobile ad-hoc network, nodes can play the role of a receiver, sender, or a relay. As movement is flexible in Mobile ad-hoc networks and nodes have limited resources, nodes may join the communication or exit it at any time. Therefore, for Mobile ad-hoc networks, routing techniques - selecting communication routes and maintaining them – is considered important in an environment of constantly changing network topology. To overcome this problem, this paper proposes a reliable routing protocol based on MP-AOMDV, which monitors changes in signal strength not only for GPS signals but reception signals as well. Although MP-AOMDV was researched under the assumption of fixed movement direction and speed, this paper proposes a routing technique that works with changing movement direction or speed of nodes.
Authors: M.G. Cheong, Kyung Sik Oh, Eun Kyung Suh, H.J. Lee
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