Study of a simple single-trace transmission example shows how an extended source formulation full-waveform inversion can produce optimization problem without spurious local minima ("cycle skipping"), hence efficiently solvable via Newton-like methods. The data consist single trace extracted from causal pressure field, propagating in homogeneous fluid according to linear acoustics, and recorded ...

The hybrid precoding problem in point-to-point millimeter wave (mmWave) multiple input output (MIMO) for narrowband channel is established as a Frobenius norm minimization problem. It translated into trace problem, and two algorithms are proposed to solve it. In the first method based on alternating minimization, we alternately determine analog precoder digital precoder, keeping other constant ...

We give thread-modular non-relational value analyses as abstractions of a local trace semantics. The semantics well the are formulated by means global invariants and side-effecting constraint systems. show that generalization analysis provided static analyzer Goblint natural improvement Antoine Miné’s approach can be obtained instances this general scheme. these two incomparable w.r.t. precisio...

This dissertation concerns testability of event-triggered real-time systems. Real-time systems are known to be hard to test because they are required to function correct both with respect to what the system does and when it does it. An event-triggered real-time system is directly controlled by the events that occur in the environment, as opposed to a time-triggered system, which behavior with r...

We present a simple and powerful generalized algebraic semantics for constraint logic programs that is parameterized with respect to the underlying constraint system. \Generalized semantics" abstract away from standard semantics objects, by focusing on the general properties of any (possibly non-standard) semantics deenition. In constraint logic programming, this corresponds to a suitable deeni...

The paper is an overview of a recently developed compilation data structure for graphical models, with specific application to constraint networks. The AND/OR Multi-Valued Decision Diagram (AOMDD) augments well known decision diagrams (OBDDs, MDDs) with AND nodes, in order to capture function decomposition structure. The AOMDD is based on a pseudo tree of the network, rather than a linear order...

Modern geometric constraint solvers use combinatorial graph algorithms to recursively decompose the system of polynomial constraint equations into generically rigid subsystems and then solve the overall system by solving subsystems, from the leave nodes up, to be able to access any and all solutions. Since the overall algebraic complexity of the solution task is dominated by the size of the lar...

the study focused on the analysis of production and marketing constraints of tomato among rural farmers in talensi nabdam district of upper east region of ghana.a total of 100 respondents were interviewed using questionnaire. data was analyzed using descriptive statistics to describe the socio economic characteristics of the farmers and kendall’s coefficient of concordance was used to rank the ...

We derive results on equivalence of piecewise polynomial approximations a given function in the Sobolev space $${\varvec{H}}{\mathrm{(curl)}}$$ . namely show that global-best approximation -conforming imposing continuity tangential trace can be bounded above and below by Hilbertian sum respective local from elementwise spaces without any inter-element requirement. In other words, tangential-tra...