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.
This paper studies the stability and stabilization of switched Boolean networks (SBNs) with impulsive effects. The dynamics of SBNs with impulsive effects is converted to an algebraic form, based on which, some criteria are presented for the stability of SBNs with impulsive effects. These conditions include the arbitrary switching signal case and the state feedback switching signal case. In addition,...
In modern networks, faults in the network state, e.g., loops, black holes and access control violations that make services unavailable, arise commonly. To ensure networks' correctness, existing approaches verify network-wide invariants. However, these approaches cannot detect or prevent faults immediately as they arise, so that network performance is not affected. In this paper, we present a data...
Inspired by biological systems, compliant elements are introduced in the driving train of legged robots with the purpose of recycling energy. This paper presents the design and control concept of the monopedal robot SPEAR, driven by a novel implementation of a Switchable Parallel Elastic Actuator (S-PEA). At the stance phase, the parallel spring in S-PEA works with the actuator to support body weight...
This paper presents an ASIC design of ultra-low power SAR ADC. To achieve ultra-low power, the proposed ADC operates at ultra-low voltage, deploying a single-ended structure and top plate sampling technique. In order to improve sampling circuit linearity at ultra-low supply voltage, a bootstrapped switch is developed. A non-binary redundant algorithm is applied to correct the inevitable decision errors...
Three-Dimensional (3D) FPGA as a promising design trend, achieves significant performance improvement over conventional 2D-based FPGA. The maturity of the uni-directional routing architecture design, which achieves 25% area saving in area-delay-product (ADP) over bi-directional routing architectures, has driven major vendors such as Xilinx and Altera to switch to such architecture in their 2D-based...
Cognitive radio gives users the ability to switch channels and make use of dynamic spectrum opportunities. However, switching channels takes time, and may affect the quality of a user's transmission. When a cognitive radio user's channel becomes unavailable, sometimes it may be better waiting until its current channel becomes available again. Motivated by the recent FCC ruling on TV white space, we...
Monitoring overvoltage is essential to the power system's operating well. Potential transformer is an important measuring instrument in power station. Because of the high amplitude of lightning overvoltage and switching overvoltage, the iron core of potential transformer reaches saturation in a very short time. The iron core shows nonlinear characteristic, so the distortion of secondary voltage and...
This paper presents a fully integrated inductively powered implantable circuits for blood flow measurement, which are embedded within vascular prosthetic grafts for early detection of graft degradation or failure. The ASIC interfaces with micro-fabricated pressure sensors and uses a 13.56MHz carrier frequency for power transfer and command/data communication. A backscatter-modulated passive telemetry...
In this paper, we present a Wireless Local Area Network (WLAN) channel selection algorithm and testbed implementation for video streaming applications. We call this type of spectrum management functionality Channel Pool Management (CPM). Specifically, we designed a scheme called Shifted Mask Superposition (SMS) that harnesses the transmitter spectral mask to help predict WLAN channel quality dynamically...
We present a MIP formulation and an efficient heuristic for the problem of logical topology design for a distributed computing application to survive one computing cluster failure and one fiber link failure in WDM networks.
In this paper, a class of linear switched systems with time delays is investigated. At the same time, the impulsive effects and parametric uncertainty assumed to be norm-bounded are considered. Some novel exponentially stable criteria are obtained by constructing appropriate Lyapunov-Krasovskii functional. The validity of the results is shown by one numerical example.
In this paper, we study the waveband switching technique in WDM optical networks and propose a novel Routing Algorithm based on Integrated Auxiliary Graph (RAIAG) to save the switching ports in optical cross-connect. The IAG is compared of the single virtual topology layer and multiple waveband-plane layers, and it can well solve the problem of routing and waveband assignment. In RA-IAG, we use the...
Cognitive radio improves spectrum efficiency by allowing secondary users (SU) to dynamically exploit the idle spectrum owned by primary users (PU). This paper studies optimal bandwidth allocation for SUs. Consider the following tradeoff: a SU increases its instantaneous throughput by accessing larger bands, but channel switching overhead (due to the dynamics of PU activities) and contention among...
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.