The rapid advancement of wireless communication technologies has precipitated an unprecedented demand for high data rates, extremely low latency, and ubiquitous connectivity. In order to achieve these goals, stacked intelligent metasurfaces (SIM) been developed as a novel solution perform advanced signal processing tasks directly in the electromagnetic wave domain, thus achieving ultra-fast computing speed reducing hardware complexity. This article provides overview SIM technology by...

Introduction University campuses, with their abundant natural resources and sports facilities, are essential in promoting walking activities among students, faculty, nearby communities. However, the mechanisms through which campus environments influence remain insufficiently understood. This study examines universities Wuhan, China, using crowdsourced data machine learning methods to analyze nonlinear interactive effects of built on exercise walking. Methods utilized incorporated diverse...

The trajectory planning algorithm of underwater vehicle near-bottom cruise is important to scientific investigation, industrial inspection, and military affairs. An autonomous (AUV) often faces the problems complex environment large area in a real environment, some robots must hide themselves during cruise. However, best our knowledge, few studies have focused on algorithms for AUVs with multiple constraints large-scale maps. currently used are not effective at solving length-constraint...

Functional fillers with low thermal conductivity and high near-infrared reflectance play a vital role in temperature insulation coatings make an outstanding contribution to achieving efficient comprehensive insulation. In this work, the bonding properties of lanthanum–cerium oxide (LCO) were regulated by composition design. The effects La/Ce mole ratio on phase composition, reflectivity LCO investigated systematically. results showed that coating 1:1 possess excellent (ΔT ≈ 115°C) due...

In this letter, a high-gain filtering dense dielectric patch (DDP) antenna (DDPA) with metal cylinders is proposed, which consists of DDP and double-layered printed circuit boards (PCBs). The <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">TE</i> <sub xmlns:xlink="http://www.w3.org/1999/xlink">12</sub> mode xmlns:xlink="http://www.w3.org/1999/xlink">1+δ2</sub> are excited by using slot feed structure, form passband. proposed DDPA itself has...

In this paper, the synthesis of scenario-based capacity maximizing/optimal antennas for an indoor MIMO-UWB system is presented. Since wavelength changes significantly across whole spectrum, a solution must be found in order to utilize same optimal antenna configuration UWB band. A systematic framework presented here whereby outcome with orthogonal channels guaranteed. The also aids reducing number elements needed contrary traditional array used MIMO systems. resulting radiation pattern and...

Purpose The purpose of this paper is to propose a methodology construct stock market sentiment lexicon by incorporating domain-specific knowledge extracted from diverse Chinese media outlets. Design/methodology/approach This presents novel method automatically generate financial lexicons using unique data set that comprises news articles, analyst reports and social media. Specifically, based on keyword extraction used build high-quality seed an ensemble mechanism developed integrate the...

Virtual machine(VM) scheduling algorithms optimize the energy consumption without performance degradation, where cloud providers profited greatly. However, not any performs same. To evaluate power efficiency of such algorithms, various scale clusters have to be maintained, which is costly and difficult. In this paper, we present a emulation software CloudEval evalute migration VMs. Comparing previous simulation environment, addresses evaluation dynamic VMs in cloud, by simpler non-intrusive...

This paper puts forward some methods aiming at grinding diamond (1) a new method of examining and testing force through tests on the rotational speed driven belt pulley (2) original stage grinding, area are adopted to control feeding grinding. The variation rule is given in drawn from experiment about mill normal direction (short for: force). And formula induced surface circular varying with amount blank shape while adoption can meet real time controlling process precisely efficiently.

The field distribution between strips in a periodic array of parallel was modeled. electric integral equation (EFIE) together with method moments (MoM) employed to solve the problem. incident plane wave assumed be transverse (TE). effect angle on investigated. For comparison, an same configuration but containing finite number also modeled using EFIE and solved via MoM. Good agreement found even when small. results are interest for mobile radio.

A compact dual-band monopole antenna for WLAN applications is proposed and investigated. The basically composed of two strips an asymmetric microstrip-fed line. measured results show the can provide separate impedance bandwidths 150 MHz (about 6.1% centered at 2.45 GHz) 1124 18.2% 5.5 GHz), making it easy to cover specifications operation in 2.5 GHz band 5.2/5.8 bands. Besides, not only exhibits almost omnidirectional radiation pattern H-plane dipole-liked E-plane, but also provides stable...

A planar antenna for use in an indoor MIMO communication system is designed according to the optimized result of synthesis algorithm a capacity maximizing feature. The antenna, which can transmit two orthogonal channels simultaneously. This paper describes brief algorithm, design and measurement verification.

The scarcity of the proper tool for fast developing intelligent toy is one problem that affects top grade toys our country. This paper presents a method based on tree structure toys, which supported by friendly man-machine interface, able to realize restructuring and modularizing design program, debugging controlling smartly, avoid some mistakes program. with help Problem Analysis Diagram (PAD) transforms programming task into structure, translates executes every node structure....

This paper presents the design of a planar UWB dual-mode antenna, which can radiate two orthogonal modes for data transmission through subchannels simultaneously. An optimized theoretical radiation pattern has been synthesized typical indoor office scenario, and this is used as basis to corresponding real world antenna. Since antenna expected be on handheld device such cellphone or laptop, required flat sufficiently small.