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• A unique dielectric-magnetic compound of ZnO/Ni@C hollow microsphere is designed and constructed. • Synergistic effects are realized by the hollow structure and multiple loss mechanisms. • Efficient electromagnetic wave absorbers with broad bandwidth and thin thickness. • Computer simulation technology is performed to simulate the radar cross section and the electromagnetic field. Ingenious microstructure design and rational composition collocation have been proved to be an effective strategy for developing efficient electromagnetic wave (EMW) absorbers. It would be promising to fabricate a hollow structured composite integrating multiple loss mechanisms (conduction, magnetic, and polarization losses) for excellent EMW absorption. Herein, a novel dielectric-magnetic compound of ZnO/Ni@C hollow microsphere was prepared through hydrothermal reactions followed by an in-situ chemical vapor deposition (CVD). In this ternary composite, abundant ZnO/Ni heterostructures formed the hollow microsphere skeletons and provided unique Schottky junctions, which endowed the composite with improved impedance matching and strong polarization loss. Meanwhile, the amorphous-polycrystalline carbon layer deposited on the surface of each microsphere enhanced the conduction and interfacial polarization losses. In addition, the magnetic Ni nanoparticles induced magnetic loss. Benefiting from the synergistic effect of the hollow structure and multiple loss mechanisms, the ternary composite exhibits an effective absorption bandwidth as wide as 6.55 GHz at a thickness of only 1.85 mm, accompanied by a minimum reflection loss of –39.8 dB. Besides, the radar cross-section and the electromagnetic field simulation further verify the superior EMW absorption performance of the composites. Our work provides a new reference for the fabrication of dielectric-magnetic ternary hollow microspheres as EMW absorbers with thin thickness and broad bandwidth. [Display omitted] [ABSTRACT FROM AUTHOR]

This paper studies the dynamic output feedback (OF) control problem for unmanned aerial vehicles (UAVs) with limited network bandwidth by a genetic-algorithm-assisted design approach. In order to make full use of the limited network bandwidth, only partial measurement information is transmitted to the controller via the sensor-to-controller network. Round-Robin protocol is introduced to administrate the transmission rule. Sufficient conditions are presented to make sure that the closed-loop UAV system is exponentially stable with the required L 2 -gain performance. However, due to the nonlinear coupling terms of the dynamic OF controller parameters and some redundant variables in the system modeling, the established conditions are non-convex and difficult to be solved. Fortunately, genetic algorithms (GA) show good performance in solving optimization problem with nonlinear and non-convex constraints. Therefore, this paper skillfully combines GA with linear matrix inequality techniques to solve the established conditions. Finally, all the dynamic OF controller parameters and the minimal L 2 -gain can be obtained simultaneously. At the end of this paper, an UAV networked control example and a numerical example are performed to verify the effectiveness and superiorities of our method. [ABSTRACT FROM AUTHOR]

Copyright of WIK-Diskussionsbeiträge is the property of WIK Wissenschaftliches Institut fur Infrastruktur und Kommunikationsdienste GmbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The article discusses several topics, including using Rsync to control bandwidth during file transfers, adding storage to a Btrfs RAID 1 setup to increase capacity, and addressing issues with the GRUB bootloader when multibooting various Linux distributions. It also covers data destruction and the use of the "Shred" command to securely remove files.

Aria2 is a lightweight, multi-protocol, multi-server, and multi-source command-line download utility that can improve internet bandwidth usage. It supports various features such as verifying checksums, authentication certificates, and includes a fully featured BitTorrent client. Aria2 can download the same file using different protocols and supports opening multiple connections to download files faster. It is available in the software repositories of popular desktop distros and can be installed with a simple command. Aria2 also offers options for configuring downloads, such as defining destination directories, setting download speeds, and more. Additionally, there are graphical front-ends available for users who prefer a graphical interface. [Extracted from the article]

The article discusses the release of the LPB-3 Linear Power Booster and EQ pedal by Electro-Harmonix. The LPB-3 is a modern version of the company's first product, the LPB-1, which was released in 1968. The pedal offers a maximum boost of 33dB and includes knobs for adjusting treble, bass, and a two-knob semi-parametric EQ for the midrange. The article praises the pedal for its versatility and ability to shape tone, making it suitable for both enhancing existing tones and taking them to another level. The article also mentions alternative pedals with similar features and price ranges. [Extracted from the article]

The author reports on the ongoing research into terahertz technology to support wireless communications systems. He mentions how terahertz waves can increase bandwidth availability, the various remote sensing technologies that could be developed or improved, and research into overcoming some of the difficulties in using terahertz transmissions.

The article offers information about the evolution in the wireless technology. It mentions about the Reconfigurable Intelligent Surfaces (RIS) is envisaged as a new enabling candidate wireless technology for the control of the radio signals between a transmitter and a receiver in a dynamic and goal-oriented way, turning the wireless environment into a service.

This paper is concerned with the event-triggered fault detection filter design problem for discrete-time memristive neural networks with measurement quantization. Aiming at saving communication bandwidth and improving communication efficiency, a new component-based adjusted dynamic event-triggered protocol is proposed. The transmission status of each measurement component can be determined based on the individual prescribed triggering condition. The quantizer with variable density is introduced to meet different performance requirements, in which the quantization densities vary among a finite set of modes. By constructing an augmented Lyapunov functional, an asynchronous filter is designed to achieve the desired performance while assuring the stochastic stability of the filtering error system. Finally, a simulation example is provided to verify the effectiveness of obtained theoretical results. [ABSTRACT FROM AUTHOR]

This paper presents a digitally programmable bi-directional 7-bit passive phase shifter in a 65 nm CMOS technology. The core of this passive vector-synthesized phase shifter is a hybrid quadrature generator (HQG), an interstage matching network, and a passive vector modulator (PVM). This work proposes a high coupling-factor-based quadrature generator design methodology and demonstrates it with a compact vertical transformer. The interstage matching network between HQG and PVM is proposed to release the bandwidth bottleneck and achieve a 34% fractional frequency bandwidth. Two 6-bit X-type attenuators in the I and Q path form a high-resolution 12-bit controlling word. In 32–40 GHz, this 7-bit 360° phase shifter achieves a measured 2.8° step with 0.45-1.6° RMS phase error and 0.2-0.36 dB RMS magnitude error. With the broadband technique, its 3-dB bandwidth reaches 30.2-42.7 GHz with a 2.8° RMS phase error. Its in-band 1-dB compression point is 10.2 dBm. With the proposed compact HQG and PVM, this mm-wave passive phase shifter only occupies $220\times 630\,\,\mu \text{m}^{2}$ and has no power consumption. [ABSTRACT FROM AUTHOR]

The article reports that bandwidth is not an indication of how smart someone is but of how much brainpower a person has available to bring to a task—learning in a classroom. Topics include examines preserving and restoring cognitive capacity lost to a sense of uncertainty which might be related to an aspect of identity or a feeling of not belonging that is an often-overlooked aspect of educational imperative.

Well, Alder Lake rather handily supports both DDR4 and DDR5, so the new memory standard isn't compulsory, as it will be with AMD's new AM5 socket and Ryzen 7000 CPUs later this year. AMD's Zen 4 Ryzen 7000 CPU will bring a plethora of platform upgrades for AMD fans. The big question, therefore, is whether Raptor Lake will upgrade the direct-to- CPU M.2 interface to Gen 5 spec just as Ryzen 7000, AM5, and AMD's 600 series chipset will deliver. Intel and AMD are prepping epic new processors, while Nvidia and AMD are tooling up to recalibrate expectations when it comes to generational performance increases with their next graphics cards. [Extracted from the article]

This study investigates asynchronous control strategies for a specific class of nonlinear semi-Markov jump systems using the T-S fuzzy model. The primary objective is to overcome bandwidth constraints and enhance system performance. A novel probabilistic event-triggered protocol is introduced, aimed at reducing the frequency of packet transmissions efficiently. Unlike conventional static event-triggered protocols, this developed probabilistic event-triggered protocol adeptly harnesses the dynamic nature of network-induced delays. Moreover, by incorporating probabilistic delay division, a novel control law associated with the delay probability segmentation variable is skillfully designed. Discrepancies between system and controller modes are addressed by adopting a hidden semi-Markov model. This approach leads to the derivation of comprehensive criteria ensuring the stochastic stability of the closed-loop system. Finally, a practical example is presented, demonstrating the efficacy and practicality of the proposed theoretical results. [ABSTRACT FROM AUTHOR]

The article investigates melanin bias in pulse oximetry and the impact of light source spectral bandwidth on SpO2 measurements. Topics include the development of spectrally resolved photoplethysmography (srPPG) to address measurement biases, the influence of melanin on SpO2 readings, and recommendations for using narrower spectral bandwidths to improve accuracy.

The HighPoint Rocket 1608A is a high-performance storage solution that allows users to assemble up to eight PCIe 5.0 SSDs with 16 lanes of upstream bandwidth. It provides cooling, connectivity, and an on-board PCIe switch, eliminating the need for motherboard bifurcation. The card is compatible with both PCIe 5.0 and PCIe 4.0 SSDs and can achieve speeds of up to 56GB/s or more. However, it is a costly investment and requires the right platform and drives to reach its full potential. [Extracted from the article]

The article discusses the performance and features of the Lexar Thor OC DDR5 RAM. The RAM is praised for its affordable price of $100 for a 32GB kit with a speed of 6,000 MT/s. It is compatible with both Intel and AMD systems and offers solid performance with a low latency of 10.67ns. While it lacks RGB lighting and has a questionable design, it delivers comparable performance to other more expensive kits. The article also mentions that the RAM runs slightly warmer under load but still within safe limits. Overall, the Lexar Thor OC DDR5 RAM is considered a budget-friendly option that provides good performance. [Extracted from the article]

This article from Maximum PC provides a list of the best NVMe SSDs in 2024. The author highlights the advancements in SSD technology, including PCIe 5.0 and PCIe 4.0 drives with improved performance and higher capacities. The list includes the Western Digital SN770M 1TB, Kingston Fury Renegade, Lexar NM790 2TB, Crucial T705 2TB, and Crucial T500 2TB. Each drive is described in terms of its specifications, performance, and price. The article is aimed at individuals interested in handheld gaming PCs and those seeking high-performance SSDs for their systems. [Extracted from the article]

TikToker Lisa Beasley has gained popularity with her character "Corporate Erin," who uses a corporate accent to mock the jargon and tone used in business settings. This corporate accent, characterized by phrases like "buckle down" and "bandwidth," may sound confident but is ultimately meaningless and time-wasting. A survey by LinkedIn and Duolingo found that younger workers, particularly Gen Zers and millennials, feel left out at work due to workplace jargon, with 48 percent of Gen Z respondents admitting they struggle to keep up with phrases like "blue sky thinking" and "low-hanging fruit." This language barrier leads to mistakes in their work for 60 percent of Gen Zers and millennials. [Extracted from the article]

The case for making 4K textures an optional DLC download when buying a PC game. [ABSTRACT FROM AUTHOR]

If you want to know whether your Windows PC has been restarted in your absence, you can find out using the Windows event log. [ABSTRACT FROM AUTHOR]

A new report discusses research findings on audiology, specifically focusing on the variability of transducers used in speech-in-noise testing. The study conducted a literature review and found significant differences in test scores between headphones and insert phones. Participants with normal hearing using inserts had worse scores compared to those using headphones, while participants with hearing loss showed comparable scores across transducer types. The study emphasizes the importance of considering transducer type when interpreting test outcomes and highlights the need for standardized protocols and documentation in speech-in-noise testing. [Extracted from the article]

A study conducted by researchers at the Massachusetts Institute of Technology (MIT) explored the impact of familiarity on perceptual awareness. The researchers found that observers were more likely to notice changes in the periphery of familiar scenes compared to unfamiliar scenes. This challenges previous paradigms like change blindness and inattentional blindness, which suggest that observers are unaware of many aspects of the visual world. The study was funded by the Templeton World Charity Foundation, the Canadian Institute for Advanced Research (CIFAR), and the American Psychological Foundation. The findings have been published in the Journal of Cognitive Neuroscience. [Extracted from the article]

A patent has been issued for an articulatable surgical lighting system with high bandwidth transmission from a light head. The system includes a central shaft, a surgical light head, an extension arm, a load balancing arm, and a yoke assembly. The surgical light head has light emitting elements and an optical signal generating component, such as a camera, for capturing data and generating an optical signal. The system uses optical fiber cables and rotatable joints to transmit the optical signal to various components of the lighting system. The patent was filed by inventors from Ohio and Rhode Island and assigned to the American Sterilizer Company. [Extracted from the article]

Communication Service Providers (CSPs) are frantically upgrading networks to deliver massive amounts of bandwidth quickly and reliably. [ABSTRACT FROM AUTHOR]

Researchers from Universitas Mercu Buana in Jakarta, Indonesia have conducted a study on the miniaturization of substrate-integrated waveguide (SIW) antennas. They found that the narrow impedance bandwidth is a challenge for the miniaturization of the quarter mode substrate integrated waveguide (QMSIW) antenna. To address this issue, the researchers proposed a method of bandwidth enhancement for the QMSIW antenna by using dual cavity and triangle slot. The simulation results showed an 8.6% fractional bandwidth improvement with dual resonant frequencies. The research was published in the International Journal of Electronics and Telecommunications. [Extracted from the article]

A recent study suggests that familiarity with stimuli can affect the extent to which observers are aware of changes in their visual field. The study found that observers were more likely to notice changes to the periphery when the stimuli were familiar to them. These findings challenge the idea that prior knowledge simply "fills-in" perception and highlight the role of prior knowledge in shaping perceptual experience. It is important to consider prior knowledge when reconciling empirical observation with personal introspection. However, it is worth noting that this study has not yet undergone peer review. [Extracted from the article]

Sodvin AS, a telecommunications and energy solutions provider, is using Ciena's XGS-PON broadband solution to enhance its residential broadband services in Trøndelag county, Norway. By utilizing its existing power infrastructure, Sodvin is able to deploy fiber-optic networks and extend broadband access to residents and businesses in the region. Ciena's XGS-PON technology offers higher bandwidth and symmetrical speeds of up to 10 Gb/s for faster and more efficient data transfer. Sodvin selected Ciena's solution for its advanced technology, increased flexibility, and integration capabilities. The new residential broadband network incorporates key components of Ciena's PON solution, allowing for rapid and sustainable expansion based on customer demand. [Extracted from the article]

Lenbrook Media Group has announced plans to launch a new music streaming service using MQA's Airia technology to compete with Tidal and Qobuz. The service will offer high-resolution audio streaming in PCM/FLAC or MQA formats, with Airia providing the delivery mechanism. Lenbrook will partner with HDTracks to produce the service, which will be available on various platforms. In contrast, Tidal has recently removed its MQA library and 360 Reality Audio tracks, opting to only support Dolby Atmos. [Extracted from the article]

A new study by the Fiber Broadband Association (FBA) and RVA LLC Market Research & Consulting reveals that subscribing to gigabit fiber broadband service can add $326 billion to the U.S. GDP. The study emphasizes the importance of constant improvement in broadband speeds, with fiber broadband offering the most value in terms of reliability, longevity, and sustainability. Increasing bandwidth speeds for work-from-home subscribers from 100/20 Mbps to gigabit fiber could potentially add 1.2% or $326 billion to GDP. Additionally, the study shows that fiber broadband has the lowest latency and highest uptime compared to other internet delivery methods. The FBA also published a white paper highlighting the significant reduction in carbon footprint achieved by fiber-to-the-home (FTTH) networks compared to hybrid fiber coaxial (HFC) networks. [Extracted from the article]

The continuous-time pipeline (CTP) analog-to-digital converter is an emerging technique that combines the benefits of pipelining with continuous-time operation. Prior-art multistage CTP ADCs have employed stages with identical transfer functions. This work proposes the use of non-identical (and appropriately chosen) transfer functions for different stages of the pipeline. We investigate the benefits of this approach when compared with conventional techniques. We also demonstrate that the sharp filtering offered by a multi-stage CTP can be exploited to implicitly decimate the output sequence of the converter. This is accomplished by clocking the back-end ADC at a lower rate, and by appropriately modifying the digital reconstruction filters. The implicit-decimation theory is supported with measurement results from a three-stage CTP designed in a 65nm CMOS process. The converter achieves 70.4dB SNDR in a 100MHz bandwidth with its front-end operating at $f_{s}\,{=}\,800$ MHz, while the back-end samples at $f_{s}/2$. [ABSTRACT FROM AUTHOR]

In this paper, we present an integrator-differentiator transimpedance amplifier (I-D-TIA) with a dc compensation, which incorporates widely tunable multi-element pseudo-resistors (MEPRs) in its dc servo loop and ac signal path. The implemented MEPR in the dc path is continuously tunable from $460 \,\mathrm {k\Omega }$ to $300 \,\mathrm {G\Omega }$ allowing the TIA to process dc currents with a dynamic range of more than $100 \,\mathrm {dB}$. The MEPR in the differentiator ac signal path provides a tunable resistance between $0.3 \,\mathrm {M\Omega }$ and $100 \,\mathrm {M\Omega }$ , resulting in an overall ac transimpedance between $3 \,\mathrm {M\Omega }$ and $1 \,\mathrm {G\Omega }$. For the lowest ac transimpedance, a bandwidth of $10 \,\mathrm {MHz}$ is achieved. The TIA provides a minimum input-referred current noise density of $1.6\,\mathrm {fA}/\mathrm {\sqrt {Hz}}$. The implemented MEPR has been optimized regarding its high-frequency noise by minimizing its parasitic capacitances. The MEPR shows an inherent shot noise suppression such that its noise stays close to the theoretical thermal noise limit and significantly below the theoretical shot noise limit, even for large dc currents. By using a sub-VSS supply for the MEPR, the asymmetry in its output characteristic is greatly reduced, leading to a linear signal swing of $1.5\,\mathrm {V_{pp}}$ with a THD below $1 \mathrm {\%}$ on a $1.8-\mathrm {V}$ supply. Thanks to this high linearity, large bandwidth, and high dc current dynamic range, the proposed TIA can be used in a wide variety of applications from high-sensitivity, low-bandwidth lock-in detection to transient current sensing with sub-microsecond timing resolutions. [ABSTRACT FROM AUTHOR]

This paper presents a Doherty power amplifier (DPA) with reduced size and wide bandwidth by using a simplified output matching topology. In broadband DPA designs, post-matching networks are usually added after the combing node, which usually occupy large circuit sizes. However, in this design, the post-matching network is not used. Instead, two ideal transformers and specific output matching components are employed at carrier and peaking branches. Then, by rearranging the output matching components in the two branches, Norton transformation can be used and the ideal transformers can be eliminated. In this way, the impedance at the combining node is directly matched to a 50- $\Omega $ load without using a post-matching network, resulting in both compact size and wide bandwidth. For verification, a broadband DPA prototype with a very simple structure is implemented. The fabricated circuit shows a compact size. A wide bandwidth from 1.3 to 2.8 GHz (73%) is achieved with a saturated output power of 41.4–44.6 dBm. The drain efficiencies at saturation and 6-dB back-off power level are 60.1–79.1% and 41.8–61%, respectively, which are comparable to those of state-of-the-art designs. [ABSTRACT FROM AUTHOR]

Many workshop participants nodded in agreement with this insight, as they had been involved in the intense and gratifying work of leading multi-unit COVID-19 response teams on their campuses as part of their pandemic leadership duties. The experience of facilitating an ACAD workshop on "Reframing Burnout to Bandwidth Recovery: Crisis Reflection for Leadership Recovery" in Saint Petersburg, Florida, in February 2022 was somewhat bizarre for several reasons. [Extracted from the article]

Copyright of PC Welt Plus is the property of IDG Communications, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The article discusses the expansion of transatlantic bandwidth by CANARIE, ESnet, GÉANT, and Internet2. The collaboration has added three 400 Gbps circuits to enhance data-intensive science collaborations, such as the Large Hadron Collider and the Square Kilometer Array. ESnet and Internet2 will operate the circuits in the US, while GÉANT will provide connectivity in the UK and France. The article also mentions the formation of the Linear Pluggable Optics Multi-Source Agreement (LPO MSA) to develop specifications for networking equipment and optical modules, as well as the endorsement of the NVIDIA Blackwell platform by AWS, Google Cloud, and Microsoft. [Extracted from the article]

T-Mobile US has chosen Nokia's Multi-Access Gateway (MAG) for its fixed-wireless High-Speed Internet (HSI) service. The MAG solution supports LTE, 5G NSA, and 5G SA technologies, allowing T-Mobile to deliver an affordable and reliable broadband experience to its customers. The Nokia platform can scale the bandwidth for HSI traffic to multiple Terabits-per-second while being power and space efficient. T-Mobile plans to expand its HSI service nationwide and is excited to partner with Nokia for their innovative technology. [Extracted from the article]

T-Mobile US has chosen Nokia's Multi-Access Gateway for its fixed-wireless High-Speed Internet (HSI) traffic. The Nokia MAG solution will provide T-Mobile with an affordable and reliable broadband experience for its customers, allowing for incremental scaling of bandwidth while maintaining power and space efficiency. The MAG leverages Nokia's 7750 Service Routers to deliver broadband services over fixed-wireless access technologies. T-Mobile aims to expand its HSI service nationwide and is excited to partner with Nokia for their innovative technology. [Extracted from the article]