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Application of scanning transmission electron microscopy (STEM) to in situ observation will be essential in the current and emerging data-driven materials science by taking STEM's high affinity with various analytical options into account. As is well known, STEM's image acquisition time needs to be further shortened to capture a targeted phenomenon in real-time as STEM's current temporal resolution is far below the conventional TEM's. However, rapid image acquisition in the millisecond per frame or faster generally causes image distortion, poor electron signals, and unidirectional blurring, which are obstacles for realizing video-rate STEM observation. Here we show an image correction framework integrating deep learning (DL)-based denoising and image distortion correction schemes optimized for STEM rapid image acquisition. By comparing a series of distortion corrected rapid scan images with corresponding regular scan speed images, the trained DL network is shown to remove not only the statistical noise but also the unidirectional blurring. This result demonstrates that rapid as well as high-quality image acquisition by STEM without hardware modification can be established by the DL. The DL-based noise filter could be applied to in-situ observation, such as dislocation activities under external stimuli, with high spatio-temporal resolution. [ABSTRACT FROM AUTHOR]

This paper proposes a novel antenna(s) which are designed and analyzed for base station applications to cover GSM and LTE frequency bands. The proposed antennas are capable to cater the needs of uplink and downlink communication simultaneously. To accomplish this dual triple band inset feed π slot antenna is designed with two π slot antennas in which one is used for uplink and the other for downlink. Antennas are analyzed using high frequency structure simulator for validation of design. The uplink antenna operates in three specified bands: 887–914 MHz, 1.754–1.785 GHz and 2.509–2.562 GHz respectively where as downlink antenna operates in: 932–945 MHz, 1.853–1.886 GHz in and 2.528–2.573 GHz respectively. The parametric studies on patch and slot dimensions are presented. Effect of mutual coupling with respect to spacing between the antennas also reported. Experimental and simulated results are in good agreement. [ABSTRACT FROM AUTHOR]

In this correspondence a small low profile multiband multi-slot MIMO antenna is proposed. The proposed patch antenna covers five bands. Band I covers 2.71–2.82 GHz, band II covers 3.73–4.64 GHz, band III covers 5.14–6.72 GHz, band IV covers 7.52–8.53 GHz and band V covers 8.66–9.41 GHz. It combines many applications into a single device by designing a single antenna that can be operated in multi-bands. The proposed antenna consists of multi-slot radiator with defected ground plane. Proposed antenna is smaller in size 15 × 20 mm2 (0.14λ0 × 0.18 λ0). It is extended to MIMO and mutual coupling is reduced in three bands (III, IV and V) using Defected Ground Structure (DGS). Mutual coupling in the first band (I, II) is minimized using a decoupling element. The proposed MIMO antenna is fabricated and tested. Simulation and measured results are found to be in good agreement. [ABSTRACT FROM AUTHOR]

An antenna which is used for multipurpose like WiMAX, RADAR altimeter and X-band applications proposed. A tri-band multiple-input–multiple-output antenna resonates at 2.9 GHz, 4.3 GHz and 7.7 GHz is proposed. The uniqueness of the antenna is mutual coupling, − 53.44 dB at 2.9 GHz, − 28 dB at 4.3 GHz and − 26.55 dB at 7.7 GHz. It is evaluated in terms of mutual coupling in two ways (1) DGS (2) DGS with Vias. It is observed that mutual coupling using DGS with Vias is reduced further by 12 dB. The ECC of antenna is less than 0.0001 The simulated and measured results are compared in terms of S-parameters, Co-pol, X-pol and ECC. [ABSTRACT FROM AUTHOR]

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The article discusses the study on the investigation of sexual abuse of street prostitutes in the U.S., which eventually lead findings to pornography. The study involves a detailed content analysis of the responses of street prostitutes, which describes sexual abuse in their background, documented a surprising amount of unsolicited references to pornography. Furthermore, the results can neither confirm nor reject the model of pornography, mainly because they are based on victims' responses. However, further research is urgently needed in order to explore the amount of pornography in sexual abuse.

The original version of this article containes a mistake. In the second line of Comment 2, it should read: "It is necessary to note that Schwarzschild metric is static while the rotating metric (which is the subject of discussion) is stationary." [ABSTRACT FROM AUTHOR]