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Applied Sciences, Volume 13, Issue 8

April-2 2023 - 570 articles

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Cover Story: In this work, a novel metamaterial lens (metalens) is designed and optimized to improve the radiation performance of an antipodal Vivaldi antenna for wideband applications. The metalens is integrated into the antenna substrate and placed close to the tapered slot in the end-fire direction, allowing the antenna to maintain its light weight and compactness. The prototype has been fabricated and characterized, demonstrating good agreement with the simulations. The insertion of the metalens allows, with respect to the pristine Vivaldi, a measured maximum gain of Gmax=14.2  dB, increased by about ΔGmax=4.8 dB; an operating bandwidth of f=3÷14.7 GHz, increased by Δf=1.2 GHz; and a radiation pattern with a maximum reduction in half-power beamwidth of ΔHPBWmax=31.3°, which is more symmetrical in the E and H planes. View this paper

Articles (570)

  • Article
  • Open Access
5 Citations
3,783 Views
30 Pages

21 April 2023

Regarding enterprise service management, optimizing business processes must achieve a balance between several service quality factors such as speed, flexibility, and cost. Recent advances in industrial wireless technology and the Internet of Things (...

  • Article
  • Open Access
4 Citations
2,075 Views
19 Pages

A Novel Opportunistic Network Routing Method on Campus Based on the Improved Markov Model

  • Yumei Cao,
  • Peng Li,
  • Tianmian Liang,
  • Xiaojun Wu,
  • Xiaoming Wang and
  • Yuanru Cui

21 April 2023

Opportunities networks’ message transmission is significantly impacted by routing prediction, which has been a focus of opportunity network research. The network of student nodes with smart devices is a particular type of opportunity network in...

  • Article
  • Open Access
2 Citations
2,212 Views
18 Pages

Human Factors Analysis of the Improved FRAM Method for Take-Off Quality Lateral Shift

  • Wenjian Ouyang,
  • Xusheng Gan,
  • Yarong Wu,
  • Kai Qu and
  • Jiabo Wang

21 April 2023

This article proposes an improved FRAM method based on the traditional FRAM method, using the study of aircraft take-off quality as an example to illustrate the operation method of the improved FRAM. To address the impact of pilot operations on take-...

  • Article
  • Open Access
7 Citations
2,904 Views
23 Pages

21 April 2023

In a flexible job shop problem with transportation (FJSPT), a typical flexible manufacturing system comprises transporters that pick up and deliver jobs for processing at flexible job shops. This problem has grown in importance through the wide use o...

  • Article
  • Open Access
5 Citations
1,995 Views
16 Pages

21 April 2023

Landslide displacement prediction is a challenging research task that can help to reduce the occurrence of landslide disasters. The frequent occurrence of extreme weather increases the probability of landslides, and the subsequent increase in the sup...

  • Communication
  • Open Access
5 Citations
2,910 Views
13 Pages

Infrared All-Dielectric Metasurface Beam Splitter Based on Transflective Structures

  • Yingzheng Ren,
  • Zhongzhu Liang,
  • Xiaoyan Shi,
  • Fuming Yang,
  • Xiqing Zhang,
  • Rui Dai,
  • Shoutao Zhang and
  • Weizhen Liu

21 April 2023

Beam splitters are widely applied in various optical systems as a common beam-splitting device. The conventional stereoscopic and flat-type beam splitters greatly limit the packaging and integration of optical systems due to their large size and rest...

  • Review
  • Open Access
32 Citations
7,011 Views
16 Pages

21 April 2023

This paper explores the impact of Artificial Intelligence (AI) on the role of dental assistants and nurses in orthodontic practices, as there is a gap in understanding the currently evolving impact on orthodontic treatment workflows. The introduction...

  • Article
  • Open Access
3 Citations
1,707 Views
12 Pages

Metal Levels in Serranus atricauda and Sparisoma cretense from the North-Eastern Atlantic Ocean—Contribution to Risk Assessment

  • Alberto Gutiérrez,
  • Enrique Lozano-Bilbao,
  • Ángel J. Gutiérrez-Fernández,
  • Soraya Paz-Montelongo,
  • Dailos González-Weller,
  • Carmen Rubio-Armendáriz,
  • Daniel Niebla-Canelo,
  • Samuel Alejandro-Vega and
  • Arturo Hardisson

21 April 2023

The objective of this study was to study whether the metal concentrations in Sparisoma cretense and Serranus atricauda differ between different coastal areas around the island of Tenerife, Canary Islands and to study whether these species are good bi...

  • Article
  • Open Access
6 Citations
4,009 Views
18 Pages

21 April 2023

(1) Background: Traumatic brain injuries (TBI) result in high fatality and lifelong disability rates. Two of the primary biomarkers in assessing TBI are intracranial pressure (ICP) and brain oxygenation. Both are assessed using standalone techniques,...

  • Article
  • Open Access
3 Citations
1,673 Views
14 Pages

21 April 2023

The reduction in emissions and the increase in energy costs push companies to identify solutions to reduce energy consumption in production systems. One of the approaches proposed in the literature is the shutdown of machines to reduce energy consump...

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