Articles tagged with Telecommunications
A team from Harvard John A. Paulson School of Engineering and Applied Sciences has developed an electro-optic frequency comb that is 100-times more efficient and has more than twice the bandwidth of previous state-of-the-art versions.
A study of nearly 2,400 patients found that video telemedicine consultations matched in-person diagnoses in 87% of cases. The findings suggest a high degree of diagnostic accuracy for video telemedicine visits for most new clinical concerns.
A large primary care network analysis reveals that telephones and tablets are used most often for telehealth visits. Patients who were younger, Black or Hispanic or Latino, and living in lower-income zip codes had higher rates of telephone or tablet use.
Researchers at the University of Sussex have created an 'eternal engine' to keep next-generation atomic clocks ticking, enabling portable versions that can replace existing satellite navigation systems. The breakthrough uses microcombs and self-emergence technology to ensure stable operation in various conditions.
A study led by McGill University and the Massachusetts Institute of Technology (MIT) found that Ukrainians who engage in more analytic thinking are less likely to believe pro-Kremlin disinformation. Analytical thinking helps curtail belief in disinformation, according to the researchers.
Researchers recover data from sensors swept away by massive underwater avalanche in Congo Canyon, providing new insights into sediment flow and seabed cable breakages. The study reveals the hazards of powerful turbidity currents and their impact on global communications.
Researchers have demonstrated a significant improvement in fibre-integrated quantum memories, achieving an entanglement storage time of over 1000 microseconds. The fully integrated device enables the use of sophisticated control systems, allowing for improved scalability and compatibility with telecommunications infrastructure.
The study compares the behavior of flat (1D), cylindrical (2D) and spherical (3D) micromirrors for free-space light coupling. Silicon micromirrors were fabricated and used to experimentally validate the coupling efficiency in visible and near infrared wavelengths.
Researchers from Politecnico di Milano have developed a programmable photonic processor that can separate and distinguish optical beams even if they are superimposed. This device allows for high-capacity wireless communication, with transmission rates of over 5000 GHz.
A study of 720 patients with thoracic cancer found increased odds of unsuccessful telemedicine visits among Black and disadvantaged patients. Unsuccessful telemedicine visits were associated with worse clinical outcomes, highlighting the need for improved access to healthcare.
Researchers at Carnegie Mellon University are developing a new approach to harness the power of nanosatellites, collecting data insights while in orbit and reducing latency issues. This initiative will lay groundwork for innovative applications in fields like carbon mapping, traffic management, and precision agriculture.
Researchers at Osaka Metropolitan University observed unprecedented collective resonance motion in chiral helimagnets, allowing a significant increase in current frequency bands. This phenomenon enables a boost in frequencies beyond 100 GHz with relatively weak magnetic fields, making these materials promising for 6G technology.
Researchers from Tokyo Institute of Technology developed a novel phased-array beamformer for 5G base stations, overcoming limitations in NR 39 GHz bands. The design combines Doherty amplifiers and digital predistortion techniques to improve power efficiency and reduce distortion.
A survey of 866 clinicians revealed that their beliefs about telehealth quality and ease of use significantly impacted the proportion of care delivered remotely. Clinicians with more favorable views on telehealth were more likely to adopt it for various types of care.
Researchers at the University of Birmingham have developed a new beam-steering antenna that increases data transmission efficiency, particularly at higher frequencies. The technology is fully compatible with existing 5G specifications and has been demonstrated to provide unprecedented data transmission efficiency.
A team of researchers at The University of Texas at Austin has developed components that will allow future devices to achieve increased speeds necessary for 6G. The new radio frequency switches are made of two-dimensional materials, taking significantly less energy to operate, and can provide low-energy, high-speed functions.
A research team from USTC designed a microelectromechanical system (MEMS) resonator with ultra-high Q based on lithium niobate thin film. The quality factor at parallel resonance increased by two orders of magnitude compared to previously reported acoustic resonators.
A research team from the University of Science and Technology of China designed a microelectromechanical system (MEMS) resonator with ultra-high Q based on lithium niobate (LiNbO3) thin film. The quality factor at parallel resonance was increased by two orders of magnitude, paving the way for designing 6G communication devices.
A recent study published in JAMA Pediatrics examines the association between patient race, ethnicity, and socioeconomic disadvantage with missed telemedicine visits for pediatric patients during COVID-19. The findings suggest that these factors disproportionately contribute to higher no-show rates among disadvantaged populations.
A large-scale collaboration has uncovered how charge order and superconductivity interact at the nanoscale, enabling new insights into high-temperature superconductor dynamics. The study aims to develop a framework for understanding how these materials emerge, with potential applications in energy and telecommunication systems.
Researchers developed efficient metal-free polymeric scintillators for high-resolution X-ray imaging, outperforming conventional anthracene-based scintillators. The polymers exhibit multicolor radioluminescence and high photostability, enabling applications in radiation detection, medical diagnosis, and security inspection.
A new system, RescueCASTR, equips rescuers with 360-degree body cameras sending video and photos back to a central command post. This allows the commander to track teams, coordinate efforts and get on-the-ground views of wilderness conditions.
Researchers from Rice University and Brown University demonstrate a DIY method to hack 6G frequency using office paper, inkjet printer, metallic foil transfer, and laminator. The 'metasurface-in-the-middle' attack can redirect part of a high-frequency transmission between two users, threatening the security of next-gen wireless networks.
Researchers at NYU Tandon are developing novel methods to detect and mitigate hardware Trojans in next-generation wireless systems, as well as exploring analog side channels unique to 5G. The projects aim to make current and future wireless infrastructure more resilient to flaws and hacks.
Researchers aim to overcome physical limitations of telecommunications by creating immediate response regardless of distance. The eTouch project leverages Model-Mediated Teleoperation and Edge Computing to enable haptic feedback perception without noticeable delay.
Research reveals a 23% increase in online incivility among Congresspeople from 2009-2019, with more inflammatory tweets receiving more likes and retweets. Politicians who received reinforcing feedback from likes and retweets subsequently engaged in more uncivil tweeting.
Researchers found that states with telehealth reimbursement parity policies had higher rates of face-to-face and virtual contraceptive appointments during the pandemic. The study suggests that increased access to contraception through telehealth may have contributed to improved reproductive health outcomes.
A new study from Brown University's Policy Lab found that text-message vaccination campaigns work better when sent early, as all state residents ages 16 and up had been eligible for a shot four weeks before the campaign. Despite this, the messages' ineffectiveness was due to poor timing rather than the content.
Researchers analyzed 61 COVID-specific chatbots in 30 countries, finding common uses such as risk assessment, symptom data collection, and appointment scheduling. They also discovered that anonymity of user interactions varies across cultures, affecting the effectiveness of follow-up services.
Researchers from Georgia Tech have developed a novel tile-based approach to construct on-demand, massively scalable arrays of 5G+ enabled smart skins. The study demonstrates the ability to enhance 5G+ technologies while featuring flexible and conformal capabilities.
Researchers found increased telehealth use was associated with reduced no-show rates and narrowed access disparities in pediatric care. The study also highlighted the growth of telehealth across various pediatric subspecialties before and during the COVID-19 pandemic.
Researchers validated at-home visual acuity tests to measure eye health in telehealth settings, improving accessibility and reducing reliance on in-office appointments. The study found that these home tests were comparable to in-office measurements, demonstrating their potential as a reliable tool for remote eye exams.
A collaborative study from the University of Pennsylvania demonstrates topological control capabilities in an acoustic system at technologically relevant frequencies. The researchers have successfully shown that topological phenomena occur at higher frequency ranges, enabling unique signal propagation properties.
A study found that telemedicine and community screening for diabetic retinopathy are highly cost-effective in rural and urban China. The results suggest that adopting telemedicine screening programs at the national primary care level is economically reasonable.
Researchers at the University of Oxford and the University of Pennsylvania have fabricated vibrating nanostrings that resonate at predetermined frequencies. The new approach allows for rapid tuning with higher efficiency, potentially leading to longer-lasting batteries and improved data rates.
An international team of scientists has developed an organic semiconductor that can operate in the 5G frequency range, with a structure featuring ultralow capacitance and resistance. The innovation paves the way for mass manufacturing at low cost using solution processing techniques.
Researchers have demonstrated control of graphene's relaxation time, allowing for novel functionalities in devices such as light detectors and modulators. This work paves the way for the development of ultrafast optical devices with potential applications in photonics and telecommunications.
Researchers at the University of Texas at Austin created a new nanocrystal gel that can be easily tuned to work as an optical filter, controlling heating or cooling dynamically. This versatile material has applications for thermal camouflage in defense and telecommunications.
A study by University of Georgia researchers found that remote learning programs in labs continued to be effective during the pandemic, with students praising quality mentorship and skills development. However, they also reported missing informal interactions and structure.
Researchers found that smartphone app usage patterns can be used to identify individuals with over 30% accuracy. The study analyzed data from 780 people and showed consistent patterns in application usage behaviors on a day-to-day basis. This highlights the potential risks to privacy when using apps automatically collected by smartphones.
A new approach using an array of series-connected solar cells as detectors simplifies underwater optical data links, offering a cost-effective and low-energy way to transmit data underwater. The system demonstrated the highest bandwidth ever achieved for a commercial silicon solar panel-based optical communication system.
Researchers developed a new waveguide to overcome limitations in THz signal transmission and processing. The device allows for unprecedented flexibility towards manipulating THz pulses, enabling complex signal-processing functionalities such as holographic messaging.
Researchers have found a way to modify carbon nanotubes to meet the requirements of novel electronic devices. The team discovered that exposure to plasma or shortening tube lengths leads to a drop in conductivity at low terahertz frequencies, but at high enough frequencies electrons move freely.
Researchers at INRS developed a method to amplify weak optical signals while reducing noise content using the Talbot self-imaging effect. This technique has potential applications in various fields like telecommunications, bioimaging, and remote sensing.
Researchers at Penn State developed a computational optimizer to design a 3D unit cell with cube-shaped cavities that enables asymmetric transmission of linearly polarized light across a wide frequency range. The optimized design was successfully fabricated and tested, demonstrating robust optical properties.
The study examines changes in mental health care and telemedicine use among over 650,000 Medicare patients with severe mental illness during the pandemic. The findings highlight significant disruptions in care, leading to reduced access to essential services.
A study by Michigan Medicine reveals that 25% of young American men experience both delivering and receiving technology-facilitated abuse. Healthcare providers should consider addressing this issue, as men who have mental health care visits are more likely to be involved in abusive relationships.
A study shows that UK government trust, social norms, and privacy concerns play a significant role in the adoption of the NHS Covid-19 app. Initial enthusiasm to adopt the app was higher in urban locations, while people's concern about third-party data access fuelled reluctance to use it.
A recent study by Xuedi Li and colleagues found that excessive screen time was associated with increased symptoms of depression, anxiety, and hyperactivity in children during the COVID-19 pandemic. The research suggests that parents should monitor their child's screen use to mitigate potential mental health effects.
Researchers found that Americans were less likely to respond to an email survey from a person believed to be Black than from a person believed to be white. The study, which analyzed responses from over 250,000 people, suggests that racial bias can influence everyday communication behaviors.
A study of 16,000 patients with new cancer diagnoses found that those from higher socioeconomic backgrounds were more likely to use telemedicine in the months following their diagnosis. Higher socioeconomic groups also showed increased utilization of telemedicine services within 30 days of diagnosis during the COVID-19 pandemic.
In a large commercially insured population, overall outpatient care usage didn't change significantly despite increased telemedicine use. Telemedicine appeared to substitute for in-person visits, suggesting its potential as a convenient alternative.
The PERSEPHONe project aims to create a novel technological platform for photonics based on metal-halide perovskites. Early stage researchers will be trained in materials design, device development and adaptability.
Princeton researchers create a new type of antenna array that can be used in various applications, including coating airplane wings, functioning as a skin patch for medical implants, or covering a room as wallpaper. The technology uses large-area electronics to overcome limitations of conventional silicon semiconductors and enables fle...
A quantum search algorithm, known as Grover Adaptive Search (GAS), has been demonstrated to solve the index selection problem in index modulation faster than a classical computer. This breakthrough could lead to significant energy efficiency gains for wireless networks.
Scientists have developed a new material, black phosphorous, only three atoms thick, which can control light with unprecedented precision. This breakthrough technology has the potential to revolutionize telecommunications and pave the way for Li-Fi, a light-based replacement for Wi-Fi.
Scientists found that amorphous carbon coatings used to protect optical fibers from moisture can break down due to interaction with water molecules. The coating's thickness increases, leading to an irreversible increase in electrical resistance and a decrease in transparency.
There was significant growth in telemedicine use among rural Medicare beneficiaries between 2010 and 2019. The majority of this growth was attributed to care delivered by nurse practitioners and other non-physician clinicians.
The INRS team has developed an intelligent optical chip that uses autonomous learning approaches to generate optical waveforms, paving the way for further advances in telecommunications. The device can autonomously adjust to a user-defined target waveform with strikingly low technical and computational requirements.
A new study published in The Lancet Digital Health found a link between screen time and myopia in children and young adults. High levels of smart device exposure increased the risk of short-sightedness by up to 80%, according to researchers at Anglia Ruskin University.