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Paper analyzes substantial Coss behavior differences of FETs using super-junction Si, SiC and GaN technologies versus traditional Si process and suggests new practical models for power losses optimization. These models applied to derive normalized ZVS conditions and boundaries for popular PWM ZVS topologies allowing efficiency optimization at wide operating conditions.
Asset prices fluctuate up and down chaotically. Traders, investors and fund managers comb the chaos for exploitable patterns with methods such as moving averages from the realm of technical analysis. In this paper we focus on linear moving averages which aim to smooth asset prices removing fluctuations. First, we will develop a method to measure the smoothness for a linear filter. We will also discuss...
Aiming at the interval rough numbers of multiple attribute decision making (MADM) problems, a method of ranking interval rough numbers based on possibility degree is proposed. First, the deviation degree for interval rough numbers is given, and then an optimal model with maximum deviation to solve the attribute weights is set up. Second, a possibility degree formula of interval rough numbers is proposed...
Scientific articles are formed of citations which need further explored. Previous work deals with the case that citations in a paragraph talk about co-occurring terms. This paper discusses the case that citations situated in different parts of a scientific article talk about same terms. We use the co-occurring terms in citations to summarize the cited papers. The resultant summaries are then used...
A task migration method is proposed for energy savings in multiprocessor real-time systems. The method is based on the portioned scheduling technique which classifies each task into a fixed task or a migratable task. The energy-aware migration with specified parameters is formulated as a linear programming problem, and optimal solution is given. Furthermore, the method is extended to more general...
We consider the classic problem of pole placement by state feedback. Our recent work [1] offered an eigenstructure assignment algorithm to obtain a novel parametric form for the pole-placing gain matrix to deliver any set of desired closed-loop eigenvalues, with any desired multiplicities. The method was adapted from the classic eigenstructure assignment algorithm of Kautsky, Nichols and van Dooren...
The paper considers a given discrete-time linear dynamic in closed loop with a piecewise affine control law defined over a bounded polyhedral partition of the state space χ. The objective is to describe the largest error affecting the control law coefficients over each region in the above partition, for which the positive invariance of the set χ is guaranteed with respect to the closed loop dynamics...
In this paper, the feedback particle filter (FPF) algorithm is introduced for the continuous-discrete time nonlinear filtering problem. As with the continuous-time FPF, the continuous-discrete time algorithm i) admits an innovation error-based feedback control structure, and ii) requires a solution of an Euler-Lagrange boundary value problem (E-L BVP). These solutions are described in closed-form...
We present a quantum approach to simulate self-heating effects in transistors based on silicon nanowires and estimate the resulting performance degradation. Our self-consistent thermoelectric simulations are based on the nonequilibrium Green's function approach and provide the heat power transferred from electrons to phonons, thus allowing the calculation of the local temperature and its impact on...
This paper presents an output feedback shared-control algorithm for fully-actuated, linear, mechanical systems. The feasible configurations of the system are described by a group of linear inequalities which characterize a convex admissible set. The properties of the shared-control algorithm are established with a Lyapunov-like analysis. Simple numerical examples demonstrate the effectiveness of the...
We address a discrete-time LQG control problem over a fixed performance window and apply a receding-horizon type control strategy, resulting in an exact solution to the problem in terms of semidefinite programming. The systems considered take parameters from a finite set, and switch between them according to an automaton. The controller has a finite preview of future parameters, beyond which only...
Empirical pseudopotentials are employed to study ballistic electron transport in nanoscale open systems. The boundary conditions are treated using the complex band structure and Schrödinger equation is solved self-consistently with Poisson equation employing parallel computing technique and a sparse-matrix solver. The example of a Si NanoWire is considered.
We consider the classic problem of pole placement by state feedback. We revisit the well-known eigenstructure assignment algorithm of Kautsky, Nichols and van Dooren [1] and extend it to obtain a novel parametric form for the pole-placing feedback matrix that can deliver any set of desired closed-loop eigenvalues, with any desired multiplicities. This parametric formula is then employed to introduce...
This paper introduces the notion of localizable distributed systems. These are systems for which a distributed controller exists that limits the effect of each disturbance to some local subset of the entire plant, akin to spatio-temporal dead-beat control. We characterize distributed systems for which a localizing state-feedback controller exists in terms of the feasibility of a set of linear equations...
Biochemical reaction networks typically consist of a complicated structure with many interacting species and components. Techniques for the analysis of such complex systems commonly use decompositions into simpler subsystems. These decompositions are often modular, representing the state vector as a concatenation of component vectors. Without transformation, modular decompositions may lead to system...
This paper studies the output consensus problem of heterogeneous multi-agent systems with linear dynamics. The procedure of designing a novel distributed event-triggered control scheme is proposed. By utilizing the internal model principle, event-triggered strategy and some inequality techniques, it can be shown that the output consensus of the heterogeneous linear multi-agent systems can be achieved...
Analytical models of stress and deformxation of through-silicon vias (TSV), relative to numerical ones, have the advantage of being inexpensive to evaluate and in providing insight. They have the additional advantage of allowing one to embed them in ECAD tools for real time design decisions. Motivated by this reasoning, in this paper, an analytical model for the three-dimensional state of stress in...
In this work, a new wedge delamination technique for measurement of interfacial fracture strength is presented. This method can be implemented to assess the interfacial fracture behavior of underfill and silicon in flip-chip packages. Our method offers substantial advantages over traditional interfacial test methods which can be difficult to implement on brittle materials like silicon die. The efficacy...
Yield is the single most important criterion which drives the economics of our industry, impacting the bottom line directly. It is a well understood fact that both foundries and fabless companies have an extremely strong interest in achieving high yield as quickly as possible to meet the economies of scale and rapid time to market. At the 28nm node and below, implementation of DFM is believed to be...
The application of TF method to calculate the electron spectrum in highly doped n-Si quantum wires is presented under finite temperatures, where the many-body effects, like exchange, are taken into account. The electron potential energy is calculated from a simple separate equation. Then the energy sub-levels and wave functions are simulated from the Schrödinger equation. Peculiarities of solving...
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