Articles tagged with Telecommunications
Researchers have developed a custom OCT setup that incorporates a vertical cavity surface emitting laser (VCSEL) diode, which could increase access to OCT imaging and help catch eye problems early. The system performed well in imaging the eye of a healthy volunteer and showed potential for use in biometric eye scanner systems.
A new modeling approach using deep neural networks improves channel estimation performance and increases the precision of underwater transmissions. The model facilitates the detection of sparse interference and enhances the denoising of ocean transmissions.
A new algorithm was developed to help guide unmanned aerial vehicles (UAVs) in dense city environments by finding near-optimal positions for the UAVs with guaranteed line-of-sight links. The algorithm achieved over 95% of the performance of exhaustive 3D search schemes, making it a potentially viable option for this technology.
Researchers at the University of Innsbruck have created a fully functioning quantum repeater node, enabling entanglement creation and swapping over 50 kilometers. This breakthrough demonstrates the feasibility of connecting distant cities through secure, high-performance quantum communication networks.
Researchers at UC San Diego have developed a new technique to increase 5G mmWave network accessibility. The 'mmFlexible' system leverages antenna arrays to divide frequency bands into multiple usable beams, reducing lag by 60-150%. This innovation addresses the challenge of efficient data distribution in millimeter wave networks.
Scientists have successfully tracked fin whales using fibre-optic cables in the Norwegian Arctic archipelago of Svalbard. The system, called Distributed Acoustic Sensing (DAS), allows for simultaneous location and tracking of whales over an 1800 km² area with relatively low infrastructure investment.
A pilot study found that remote aerobic walking exercise training improved cognitive processing speed in fully ambulatory persons with MS. The study, which showed high adherence rates, supports the design of a large-scale randomized controlled trial.
Researchers at ICFO have successfully teleported quantum information over 1km using a multiplexed quantum memory. The technique enables fast and reliable quantum communication over long distances, with potential applications in secure telecommunications.
Researchers at Princeton University developed a new device called mmWall that can steer millimeter-wave (mmWave) signals to reach all corners of a large room. The device uses an accordion-like array of panels to reflect and refract radio waves, allowing for efficient beam steering and alignment with transmitters and receivers.
Researchers have developed a novel photoelectrochemical ultraviolet photodetector that can detect two types of ultraviolet light using a multilayered nanostructure. The detector's performance can be regulated through light intensity and external bias, enabling easy adaptation to environmental changes.
A survey study of 19,000 patients found that self-managed abortion was prevalent before accessing in-clinic care, particularly among those with limited access. The findings suggest a need for increased access to telemedicine and decentralized abortion care models.
Researchers at DTU found that conventional materials like silicon cannot prevent backscattering in photonic systems, despite attempts to create topological waveguides. The study suggests that new materials breaking time-reversal symmetry are needed to achieve protection against backscattering.
Researchers found that receipt of opioid use disorder-related telehealth services was associated with reduced risk for fatal drug overdoses. Additionally, medication from opioid treatment programs and buprenorphine in office-based settings also showed a protective effect.
Scientists at Kyoto University have established a new experimental method to examine ultra-light dark matter, addressing the challenging problem of detection. By applying millimeter-wave sensing technology in cryogenic conditions, they were able to detect dark photons with a mass range previously unexplored.
Scientists at EPFL and IBM have developed a new type of laser using lithium niobate, enabling precise distance measurements in LiDAR applications. The hybrid integrated tunable laser offers low frequency noise and fast wavelength tuning.
A team from UNIGE and ID Quantique has developed single-photon detectors that can generate secret keys at a rate of 64 megabits per second, overcoming current limitations. This innovation enables ultra-secure data transfer for banks, healthcare systems, governments, and the military.
The study reveals a significant increase in the rural-urban telemedicine divide at VA health care sites following the COVID-19 pandemic. This disparity may be attributed to disparities in structural capacity, such as internet bandwidth, and technology adoption among rural users.
Researchers at HZDR demonstrate the creation of controlled single-photon emitters in silicon, enabling mass production of photonic qubits for quantum computing. The breakthrough paves the way for industrial-scale photonic quantum processor production.
New research explores the impact of digital media on visual perception, finding that online environments can shift what the brain pays attention to. Studies suggest that excessive digital use can lead to a reduced sensitivity to oblique angles, but this effect may not be permanent once exposure to nature increases.
A multimodal knowledge-exchange platform was implemented to provide trauma critical care education to Ukrainian clinicians. The study found that simple tele-education interventions can rapidly share best practices for caring critically ill wartime casualties.
A recent study estimated that shifting from in-person visits to telemedicine for patients with cancer can result in substantial carbon emissions savings. By reducing the need for transportation, telemedicine can significantly decrease greenhouse gas emissions and contribute to a more sustainable healthcare system.
A recent study found that telemedicine use did not compromise the quality of opioid use disorder treatment during the COVID-19 pandemic. Clinical outcomes for patients treated by clinicians with high and low telemedicine use were similar, suggesting telemedicine as a comparable alternative to in-person care.
Researchers at EPFL have developed a new thin-film circuit that produces finely tailorable terahertz-frequency waves, enabling precise control over frequency, wavelength, amplitude, and phase. This breakthrough has significant implications for future electronics, telecommunications, spectroscopy, and quantum applications.
Internet-delivered parent-child interaction therapy shows promise in expanding care for underserved children with developmental delay. The study found significant improvements in child behavior that were maintained across follow-up visits.
A study of 5.1 million commercially insured adults found a rapid increase in telehealth services for mental health conditions during the pandemic. The COVID-19 pandemic led to higher service utilization rates for several mental health conditions compared to pre-pandemic levels.
Researchers at Tokyo Institute of Technology have developed a novel harmonic-selection technique to extend the operational bandwidth of 5G NR communication. The proposed technology improves power efficiency and achieves low noise, making it compatible with all existing 5G bands and future 60 GHz licensed band.
A survey of 217 rural residents found that while broadband connections are available, many lack Internet skills, leading to limited digital productivity and inclusion. The study highlights the need for in-depth training and education to fuel rural economies and improve resident well-being.
New signal-processing algorithms have been shown to help mitigate the impact of turbulence in free-space optical experiments. The researchers achieved record results using commercially available photonic lanterns and a spatial light modulator to emulate turbulence.
Researchers developed a new fluorescent emitter with a small Stokes shift, achieving high external quantum efficiency over 10% and narrow emission bands. The sensitization strategy using TADF sensitizer is an effective method for obtaining efficient electroluminescent devices.
Researchers from Nagoya University found that 5G network telemedicine is effective in providing telerehabilitation and teletreatment in a remote community. The study showed that 5G transmitted high-definition images with low latency, reducing the need for physical therapist visits and improving patient outcomes.
A USTC research team achieved on-demand storage of photonic qubits at telecom wavelengths using a laser-written waveguide fabricated in an erbium-doped crystal. This innovation increases photon storage efficiency by up to fivefold, reaching 98.3% fidelity and enabling large-scale quantum networking applications.
A quality improvement program assisted patients in overcoming video visit access barriers, leading to improved adherence rates. The study found a significant association with both increased video visit attendance and financial savings.
A web-based multicomponent intervention has been shown to improve blood pressure control and lower blood pressure levels in patients with hypertension. The study included 4,100 patients and found that such an intervention can provide a new, effective way to treat hypertension in the community.
A team of researchers proposes an intelligent routing scheme to optimize link load balancing in software-defined networks, achieving significant performance improvements. Their algorithms outperform traditional methods, reducing maximum bandwidth by 24.6 percent in real-world topologies.
A new study developed a traveling-wave amplifier based on a photonic integrated circuit operating in the continuous regime, providing 7 dB net gain on-chip and 2 dB net gain fiber-to-fiber. This achievement enables unlimited application areas for LiDAR and other optical sensing applications.
Researchers have developed a new miniature robot called Joey that can explore real pipe networks completely on its own, weighing just 70g. The robots are small enough to fit in the palm of your hand and are equipped with energy-efficient sensors to navigate through narrow sections and obstacles.
The DUNE project uses deep learning techniques and distributed computing to improve indoor positioning accuracy. The system combines various sensor technologies and adapts to different industrial needs, providing real-time updates and reducing margins of error.
Researchers from LP3 Laboratory developed a light-based technique for local material processing in three-dimensional space of semiconductor chips. They successfully fabricated embedded structures inside Si and GaAs materials, which cannot be 3D processed with conventional ultrafast lasers.
Discontinuing or reducing telephone access may disrupt treatment for patients with access disparities, particularly Black patients and those experiencing homelessness. Telehealth was associated with increased retention rates for both new and continuing patients.
A study published in JAMA Health Forum found that out-of-state telemedicine visits among Medicare patients surged during the pandemic, with 422,000 out-of-state visits recorded in 2021. These visits were most common among patients living near state borders and those seeking primary care and mental health treatment.
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.