Abstract F -boxes defined in [6] as hyper-boxes in N∞ discrete space were applied here for the geometric description of the cobweb posetes Hasse diagrams tilings. The F -boxes edges sizes are taken to be values of terms of natural numbers’ valued sequence F . The problem of partitions of hyper-boxes represented by graphs into blocks of special form is considered and these are to be called F -ti...

in this note we consider the notion of intuitionistic fuzzy (weak) dual hyper k-ideals and obtain related results. then we classify this notion according to level sets. after that we determine the relationships between intuitionistic fuzzy (weak) dual hyper k-ideals and intuitionistic fuzzy (weak) hyper k-ideals. finally, we define the notion of the product of two intuitionistic fuzzy (weak) du...

The recently-introduced G-TOR protocol for HF data communications employs several features which maintain the throughput of this system in the presence of noise and interference. In this paper we take a closer look at the most important of these features the hybrid AR& protocol in order to provide G-TOR users with a better understanding of the technical details of the protocol and an appreciati...

Abstract Robust time-optimal control is known to feature constant (square) pulses. We analyze fast adiabatic dynamics that preserve robustness by using alternative smooth quasi-square pulses, typically represented hyper-Gaussian consider here the two protocols, robust inverse optimization and time-contracted passage, allowing design of same pulse shape in both cases. The their performance are c...

— We give a proof, based on the Poincaré inequality, of the symmetric property (τ) for the Gaussian measure. If f :Rd → R is continuous, bounded from below and even, we define Hf(x) = infy f(x+y)+ 1 2 |y|2 and we have ∫ e−f dγd ∫ e dγd 1. This property is equivalent to a certain functional form of the BlaschkeSantaló inequality, as explained in a paper by Artstein, Klartag and Milman. RÉSUMÉ. —...

In this paper, the transmission of an orthogonal frequency division multiplexed (OFDM) signal over channel with time varying frequency has been considered, selective fading and additive white Gaussian noise (AWGN). Due to channel dispersion, intersymbol and intercarrier Interference will occur at the receiver. To reduce this interference, a guard time is added as a cyclic prefix (CP), or traili...

High Frequency(HF) radio modems are required to operate over a broad range of adverse channel conditions such as severe multi-path, fading, partial-band and carrier-wave interference as well as impulsive noise. The only compensation for the HF modem designer is that the number of digital signal processing(DSP) operations available per bit is usually high. The design of both serial and parallel ...

By adding a nonlinear core correction to the well established dual space Gaussian type pseudopotentials for the chemical elements up to the third period, we construct improved pseudopotentials for the Perdew-Burke-Ernzerhof [J. Perdew, K. Burke, and M. Ernzerhof, Phys. Rev. Lett. 77, 3865 (1996)] functional and demonstrate that they exhibit excellent accuracy. Our benchmarks for the G2-1 test s...

Data transmission even at moderate data rates through ionospheric channels is subject to impairments from severe linear distortion, fast channel time variations, dynamic propagation effects and severe fading. The overall system performance strongly depends on the effective allocation of system resources. The adequacy of the effective allocation of system resources can only be derived through ac...

Hf-phosphinoamide cation complexes behave as metal-based frustrated Lewis pairs and bind one or two equivalent of CO2 and in as well can activate CO2 in a bimetallic fashion to give a pseudo-tetrahedral P2CO2 fragment linking two Hf centres.