Researchers at Penn State and Columbia University have observed a type of quasiparticle called a semi-Dirac fermion that has mass when moving in one direction but not in the other. The discovery, made using a technique called magneto-optical spectroscopy, could lead to advances in emerging technologies such as batteries and sensors.
Researchers at KAIST introduced a new hybrid device structure with organic photo-semiconductors that expand the absorption range to near-infrared, improving power conversion efficiency. The device achieved a high internal quantum efficiency of 78% in the near-infrared region and improved stability for over 1,200 hours.
The study reveals that many individuals and households incur significant financial burdens for abortion care, with those traveling from out of state facing the most extreme costs. To address this issue, expansion of insurance coverage to ensure equitable access to abortion care is needed, regardless of a person's state of residence.
Researchers have developed a reconfigurable three-dimensional integrated photonic processor specifically designed to tackle the subset sum problem, a classic NP-complete challenge. The processor operates by allowing photons in a light beam to explore all possible paths simultaneously, providing answers in parallel and demonstrating hig...
Astronomers have discovered patterns of regularity within the chaotic three-body problem, which is a fundamental challenge in physics. The researcher's findings suggest that certain configurations of three massive objects can lead to predictable outcomes, offering new insights into astrophysics and the behavior of black holes.
UCSB researchers used scanning ultrafast electron techniques to visualize fleeting electric charges in semiconductor materials. The study provides direct visual evidence of charge transfer across the interface, shedding light on the behavior of hot photocarriers and their impact on device performance.
A new UAF study tracked the reproduction, movement and survival of Canada lynx as their population collapsed due to primary prey snowshoe hare cycles. The findings indicate a clear evidence of a traveling population wave originating in the east and moving westward.
A new study found that flickering light can cause standing waves of brain activity, leading to hallucinatory patterns. Researchers used high-speed cameras to track mouse brain activity while exposed to flashing lights, revealing waves of neural activity that resembled ripples in a pond.
A study published in Frontiers of Computer Science finds conditions that make a regular balanced random (k,2s)-CNF formula (1,0)-unsatisfiable with high probability. These conditions also apply to random instances of the regular balanced (k-1,2(k-1)s)-SAT problem, providing new challenges for k-SAT problem algorithms.
A new study reveals that Latinx immigrant adults are extorted an average of $804 during their journey to the US southern border. The most common perpetrators were police officers and immigration officials. Experts say extortion should be considered an extreme stressor, which can inform mental health treatment for newly arrived immigrants.
A new photonic transmitter uses a wide-bandwidth packaged back-illuminated modified uni-traveling-carrier photodiode to achieve high-performance THz wireless communication. The device exhibits an over 80 GHz bandwidth and high saturated output power, promising applications in 6G mobile communication technology.
Researchers develop a new photodiode module with a wide bandwidth of over 80 GHz and high saturation power, enabling high-performance 6G THz wireless communication. The module is packaged with a standard WR-5 waveguide output and demonstrates flat frequency responses and high transmission rates.
Researchers found that pairs of supermassive black holes can merge due to previously overlooked behavior of dark matter particles, proposing a solution to the longstanding final parsec problem. This discovery provides insight into the nature of dark matter and its interaction with supermassive black holes.
A new approach by researchers at ISTA reveals how cells navigate through complex environments and interact with each other. The study uses computer simulations to visualize different scenarios, showing that cells move in trains like an all-wheel drive system, while clusters are slower due to collisions.
A recent study found that schooling fish expend up to 79% less energy while swimming in turbulent water compared to solitary fish. This suggests that traveling in schools allows fish to shield each other from disruptive water currents, making it easier to swim through rough waters.
Researchers at BIH developed a theory on traveling waves of activity in the human brain, which influences cognitive processes such as learning and remembering. Understanding these waves can support treatment of patients with cognitive disorders, including schizophrenia, epilepsy, and Parkinson's disease.
A recent study reveals that humans inhabited a lava tube in northern Saudi Arabia for thousands of years, with evidence of repeated occupation and a transition to oasis agriculture. The site provides valuable insights into the history of human settlement in the region.
The study found that problem property interventions in Boston reduced crime and disorder at target locations and nearby properties for many years. The program incentivized property owners to manage their properties better or sell them to new owners who could maintain them.
The prevalence of problem and at-risk gambling in Massachusetts has remained steady since casinos were introduced in 2015, according to a statewide survey. The research team attributes this to the state's robust problem gambling prevention programs, including GameSense and voluntary self-exclusion.
University of California San Diego researchers Jacques Verstraete and Sam Mattheus solve longstanding Ramsey problem r(4,t), estimating the solution as t^3. This breakthrough provides a cubic function estimate for finding four people who know each other or t people who don't, shedding light on a century-old math puzzle.
A team of researchers has shown that quantum computers can solve a specific class of combinatorial optimisation problems much faster than classical computers. This is due to the ability of qubits to take on any value in between zero and one, allowing for exponential polynomial time complexities.
A new study published in The Plant Cell has identified a genetic element controlling cold-induced sweetening (CIS) in potatoes. CIS is a major production problem for the potato processing industry, causing undesirable dark brown-black color when potatoes are fried.
Scientists have discovered two new end-replication problems in DNA replication, affecting both the leading and lagging strands. This revelation changes our understanding of telomere biology and may hold clinical implications for individuals with telomere disorders, such as Coats plus syndrome.
A novel dynamic routing planning framework DTT-STG was proposed to address limitations in existing research, integrating map-matching, road speed forecasting, and route planning. The framework captures dynamically changing spatial-temporal dependencies using diffusion convolution and attention mechanisms.
This work proposes a method to design openings as natural light sources, utilizing photorealistic rendering, designer preferences, and Bayesian optimization. The approach aims to maximize natural light usage and minimize artificial lighting requirements during the day.
The research team proposed learning label-specific features for each decomposed binary classification problem to consider the specific characteristics in its positive and negative examples. Experiments validate the effectiveness of this approach, showing superiority over original features.
Researchers from MIT and ETH Zurich developed a filtering technique to simplify a key intermediate step in MILP solvers, speeding up the process by 30-70% without compromising accuracy. A machine-learning model is then used to pick the best combination of algorithms for a specific optimization problem.
Researchers predict that vampire bats will expand their locations in search of more stable climates, potentially linked to a spillover of rabies. The team's work aims to identify and track the bats by traveling to Colombia to contain the spread.
A novel system for slip prevention of unmanned rovers has been developed by researchers at Shibaura Institute of Technology. The system uses strain displacement data to detect the traveling state of the rover and prevent slipping incidents. It also detects environmental obstacles, such as rocks and stones.
A recent study by Harvard researchers provides an engineering approach to understanding the failure of macrophages in cancer therapies. The team found that different phenotypes exhibit different penetration into tumors, with M0 macrophages showing improved transport efficiency.
A new approach called Net Learning uses deep neural networks to approximate the reachability set of Petri nets, avoiding the state space explosion problem. This allows for a probabilistic solution to be obtained without needing to solve the equivalent NP-Hard problems.
Researchers describe traveling waves of acetylcholine in the striatum, revealing a new kind of neurochemical wave. The study proposes a mathematical mechanism by which simultaneous waves of acetylcholine and dopamine arise, maintaining balance in the brain's striatum.
Researchers developed a novel optimization method combining natural evolutionary strategy with gradient descent to overcome the barren plateau problem in parametric quantum circuits. The new method exhibited superior performance in achieving higher accuracy, showcasing its potential for revolutionizing quantum algorithm optimization.
A study on songbird species reveals that complex vocal learning is associated with better problem-solving skills and larger brains. The research found a robust relationship between vocal learning abilities, problem-solving, and brain size, even when considering individual variation and other factors.
Researchers propose a reinforcement learning-based approach to optimize multi-impulse linear rendezvous trajectories, achieving faster computation times and improved fuel efficiency compared to traditional numerical optimization methods. The algorithm uses an actor-critic architecture and advantage-weighted learning to accelerate train...
Researchers propose a human-AI collaboration strategy to overcome challenges in source search tasks, such as locating fire origins or toxic gas sources. The approach leverages human expertise to enhance algorithm performance, reducing cognitive workload and improving problem-solving outcomes.
A UCLA study found that ants' nest structures are influenced by their foraging strategies and environmental conditions, rather than evolutionary history. The researchers suggest that designing roads with dedicated lanes for trucks traveling to logistics hubs could improve traffic congestion.
A new study suggests that ancient pathogens trapped in melting permafrost could cause significant ecological damage, with up to 3% of invasive pathogens becoming dominant. The researchers found that these 'time-traveling' pathogens could lead to unpredictable results, including up to one-third of host species dying out.
Researchers develop a new technique to detect circulating tumor cells in blood, overcoming noise issues with existing methods. The dual-ratio approach enhances penetration range and accuracy, paving the way for quicker diagnosis of metastasis.
A study published by the American Psychological Association found that teen girls who experience greater interpersonal stress and have difficulty solving interpersonal problems are at a higher risk of suicidal behavior. The research suggests that problem-solving deficits under distress may contribute to this link.
Researchers have designed tiny self-propelled robots that can deliver prescription drugs to hard-to-reach places inside the human body. The microrobots are capable of traveling at incredible speeds and could provide relief for bladder disease patients by releasing medication over a longer span of time.
A new study in PLOS ONE examines how individuals coped with stressors during the COVID-19 pandemic, finding that problem-focused and emotion-focused coping strategies were associated with higher quality of life. Emotion-focused coping strategies may be most helpful when stressors are unpredictable or outside of individuals' control.
A recent study in Columbus reveals striking disparities in accessibility for wheelchair users traveling by public bus. Manual wheelchair users have access to only 1% of the city, while powered wheelchair users can reach about 25%. The main obstacle is infrastructure, particularly sidewalks, which are damaged or missing in many areas.
Researchers used computer modeling to simulate the movement of lightweight plastic particles in the Mediterranean Sea. Their results suggest that these particles can drift up to 175 miles laterally from their point of origin before sinking. This discovery highlights the potential for long-distance interactions between plastic waste and...
Researchers used NASA InSight data to directly measure Mars' core properties, finding a completely liquid iron-alloy core with high percentages of sulfur and oxygen. This discovery provides new insights into Martian formation and geological differences between Earth and Mars, potentially impacting planetary habitability.
A new study suggests that large animals are disadvantaged due to their limited traveling speeds, which can be attributed to their inability to effectively dissipate excess heat generated by their muscles. This limitation leads to slower travel speeds compared to medium-sized animals.
Research reveals that individuals with OCD exhibit lower-than-normal learning rates when rewards are less than expected, while those with problem gambling display boosted learning from high rewards and blunted learning from low rewards. This study highlights the benefits of using neurocomputational approaches to understand psychiatric ...
Researchers at UCSB discovered that a single parameter, air bubble length, determines the performance of superhydrophobic surfaces. A longer air pocket can significantly reduce drag and overcome surfactant effects.
A new measure called c-value helps researchers choose between techniques based on the chance that a new method is more accurate for a specific dataset. The tool answers questions like whether to use alternative estimation methods despite potential costs and effort.
A new method has been developed to calibrate the activity-based travel demand model, taking into account bounded rationality and interdependencies between activities. The study uses a simultaneous perturbation stochastic approximation method to solve the calibration problem.
Researchers found that older adults who are comfortable traveling short distances have higher risks of functional disability and mortality. A study in Japan linked acceptable walking and cycling distances to future health outcomes, providing valuable insights for policymakers and researchers.
A study of 13 dog breeds found breed differences in cognitive traits like social cognition, problem-solving ability, and inhibitory control. The results suggest that different breeds excel in specific tasks, highlighting the complexity of canine cognition.
A researcher at the University of Copenhagen solved a 30-year-old problem in computer science by applying Petri nets to forecast COVID epidemic development. The breakthrough enables individual-oriented modeling, which can be used in epidemiology and other fields.
Scientists from Southwest Research Institute (SwRI) used data from NASA's Juno spacecraft to observe magnetic reconnection between Ganymede and Jupiter. The study found accelerated electrons traveling along the magnetic field at Ganymede's magnetopause, indicating the presence of reconnection.
Researchers developed a one-dimensional suspended high-contrast grating structure to enable directional lasing with high energy efficiency. The device can adjust the emission angle over a wide range, from -40° to +40°, making it suitable for solid-state LiDAR applications.
A new analysis offers the clearest picture yet of how various brain regions and neural networks contribute to a person's problem-solving ability. The network neuroscience theory, which posits that intelligence emerges from the global architecture of the brain, outperformed other theories in predicting general intelligence.
A recent study found that livestock systems are a significant source of antimicrobial-resistant (AMR) bacteria and genes, which can spread to humans through contaminated manure. The researchers recommend ecosystem-wide surveillance and improved manure disposal practices to combat AMR on a global scale.
Researchers link loot box purchasing to problem gambling, with 28% of adults who bought loot boxes reporting past-year gambling. The study suggests that loot boxes may prime people to gamble and increase susceptibility to problem gambling.
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 at the University of Illinois created an experimental data set to validate models of supersonic flows around a cantilever plate. The data set reveals complex fluid-structure interactions, including three-dimensional flow in the re-circulation region under the plate.