Much effort has been devoted to recovering sparse signals from one-bit measurements in recent years. However, it is still quite challenging recover with high fidelity, which desired practical compressive sensing (1-bit CS) applications. We introduce the notion of Schur-concavity this paper and propose construct by taking advantage Schur-Concave functions, are capable enhancing sparsity. Specifically, Schur-concave functions can be employed measure degree concentration, solutions obtained at...

The localization of low-frequency coherent sources requires a proper aperture to ensure high spatial resolution. Attaining large is difficult in practice when the conditions involved are limited. This letter investigated compressive beamforming-based passive synthetic approach with reference sensor fixed position. Localization findings on acoustic semi-anechoic chamber were compared conventional beamforming, aperture, and aperture. Results suggest that proposed method can produce higher...

First-photon imaging is a photon-efficient, computational technique that reconstructs an image by recording only the first-photon arrival event at each spatial location and then optimizing recorded photon information. The optimization algorithm plays vital role in formation. A natural scene containing correlation can be reconstructed maximum likelihood of all locations constrained with sparsity regularization penalty, different penalties lead to reconstructions. <mml:math...

Objective We investigated factors affecting the disability assessment Longshi scale, and differences between Barthel scales, as well modified Rankin scale (mRS), to determine whether is superior other scales. Methods This cross-sectional study included 721 participants with disability. performed t-test, analysis of variance, Pearson’s correlation test, multiple linear regression analyze group define explanatory variables. Results The had a strong positive (r = 0.868) but weak negative mRS...

Compressive sensing for sparse signal reconstruction has attracted great research interest in the last decade. In particular, compressive been successfully applied to direction of arrival (DOA) estimation with infinitely precise measurements. However, certain applications, low-rate quantization is reduce hardware complexity and cost. Thus, this paper, problem DOA one-bit measurements investigated. An improved fixed-point continuation (FPC) algorithm, namely FPC11, developed deal...

Transit network optimization can effectively improve transit efficiency, traffic conditions, and reduce the pollution of environment. In order to better meet travel demands passengers, factors influencing passengers’ satisfaction with a customized bus are fully analyzed. Taking minimum operating cost enterprise as objective considering random time constraints routes optimized. The K-means clustering analysis is used classify needs based on passenger demand shuttle bus, stochastic uncertainty...

Room-temperature cyclic voltammetry (CV) electrodynamic deposition is proposed herein for the first time to deposit Co9-xMnxS8 nanosheet arrays. The incorporation of Mn spin states induces atomic distortion, which contributes more active edge sites and fine-tuning electronic structure. (x = 4.5) catalyst exhibits enhanced catalytic activity toward hydrogen evolution reaction (HER) when compared with pristine Co9S8. This work offers a promising strategy design highly efficient HER electrocatalysts.

By treatment with benzylamine boron trifluoride, the crystallization quality and stability of FASnI 3 film significantly improved, responsivity optimal PDs is about three times that without additive.

Phosphorous slag, one of the pozzolanic active materials, is a by-product from production yellow phosphorous. In this paper, phosphorous slag was ground and adopted to prepare concrete as mineral admixture. Specific strength method used assess influences content on pozzolannic effects in with different age. The results indicated that increase age, were enhanced concrete. powder beneficial development long-term

Vehicle network is the practical application of Internet Things in field transportation, and has broad development prospects alleviating traffic congestion, reducing accidents, saving energy protecting environment. As a typical communication technology for vehicle network, standard system LTE-V2X was formulated 2007, but there no technical requirements methods testing actual urban scenario. It one issues which need to be solved that develop performance standards scenario terminal equipment....

In general, weighted compressive sensing recovery needs to solve optimisation problems with the objective function being sum of a ℓ 1 -norm and regularised differentiable convex function. Note that weights in weight vector are assumed be positive. fact, it is possible achieve outstanding signal performance even if some appropriately designed negative. However, negative lead non-convexity problem, which would place barrier attain optimal solution. To deal this issue, study, authors propose...

Classical inconsistency-tolerant query answering relies on selecting maximal components of an ABox/database which are consistent with the ontology. However, some rules in ontologies might be unreliable if they extracted from ontology learning or written by unskillful knowledge engineers. In this paper we present a framework handling inconsistent existential under stable model semantics, is defined notion called rule repairs to select rules. Surprisingly, for R-acyclic R-stratified guarded...

Abstract The fixed window function used in the short‐time Fourier transform (STFT) does not guarantee both time and frequency resolution, exerting a negative impact on subsequent study of time‐frequency analysis (TFA). To avoid these limitations, post‐processing method that enhances resolution using deep‐learning (DL) framework is proposed. Initially, deconvolution theoretical formula derived operation performed representation (TFR) STFT via deconvolution, calculation to obtain ideal (ITFR)....

It is beneficial to adjust and improve urban public transport system based on spatial heterogeneity distribution of transit-oriented development through establishing reasonable evaluation indexes method coupling between structure system. Based the inner connection system, selection principle determined from 5 aspects, such as reflecting combination planning traffic planning, dynamic strategy mode, coordination various modes in space, tendency policy management mode. index selection, are...

In the future, mobile station will comprise a wide range access technology (RAT) providing user with flexible and efficient to multimedia service high data rate communication. Although much work has been done for coexistence analysis between different systems base (BS), most of them have not addressed interference within multimode terminal. Hence, fill this gap, paper presents study Wide Band Code Division Multiple Access (WCDMA) Time Duplex Long term evolution (TDD-LTE) network in...

Existential rules are an expressive ontology formalism for ontology-mediated query answering and thus is of high complexity, while several tractable fragments have been identified. Existing systems based on first-order rewriting methods can lead to queries too large DBMS handle. It shown that datalog result in more compact queries, yet previously proposed mostly inefficient implementation. In this paper, we fill the gap by proposing efficient approach conjunctive over existential rules,...

In this paper, we consider a class of minimization problems with the objective functions having form summation penalized differentiable convex function, and weighted $\ell _1$-norm. However, different from common assumption positive weights in existing studies, shall address general case where can be either or negative, motivated by fact that negative are also capable inducing sparsity, even achieving outstanding performance. To deal resulting problem, generalized fixed-point continuation...