airflow
Why we have two nostrils instead of one big hole
Our nostrils share the workload like coworkers on rotation. Each of our two nostrils smells the world differently. Breakthroughs, discoveries, and DIY tips sent every weekday. If you close one eye or put a finger to your ear, there's an immediate sense of loss. Two eyes help us see the world while two ears enable us to locate sounds.
Embodied Intelligence for Sustainable Flight: A Soaring Robot with Active Morphological Control
Elmkaiel, Ghadeer, Schmitt, Syn, Muehlebach, Michael
Achieving both agile maneuverability and high energy efficiency in aerial robots, particularly in dynamic wind environments, remains challenging. Conventional thruster-powered systems offer agility but suffer from high energy consumption, while fixed-wing designs are efficient but lack hovering and maneuvering capabilities. We present Floaty, a shape-changing robot that overcomes these limitations by passively soaring, harnessing wind energy through intelligent morphological control inspired by birds. Floaty's design is optimized for passive stability, and its control policy is derived from an experimentally learned aerodynamic model, enabling precise attitude and position control without active propulsion. Wind tunnel experiments demonstrate Floaty's ability to hover, maneuver, and reject disturbances in vertical airflows up to 10 m/s. Crucially, Floaty achieves this with a specific power consumption of 10 W/kg, an order of magnitude lower than thruster-powered systems. This introduces a paradigm for energy-efficient aerial robotics, leveraging morphological intelligence and control to operate sustainably in challenging wind conditions.
- North America > United States (0.28)
- Europe > United Kingdom > England > Cambridgeshire > Cambridge (0.04)
- Europe > Germany > Baden-Württemberg > Stuttgart Region > Stuttgart (0.04)
- (2 more...)
- Transportation > Air (1.00)
- Aerospace & Defense > Aircraft (1.00)
- Government > Regional Government (0.67)
- Energy > Renewable (0.66)
How you breathe could reveal a lot about your health
Monitoring people's breathing could help diagnose, or even treat, various conditions Forget facial recognition – there could be a new way to identify you. Researchers have discovered that we all seem to have a "respiratory fingerprint", a unique way of breathing that could revolutionise how we diagnose and treat various health conditions, from obesity to depression. The breakthrough comes from Timna Soroka at the Weizmann Institute of Science in Israel and her colleagues, who have developed a wearable device that captures the subtle nuances of how we breathe. It addresses many longstanding questions about how respiratory signals relate to health and mental state – all in one body of work," says Torben Noto, who wasn't involved in the research, at Osmo in New York, an AI company aiming to give computers a sense of smell. The idea that breathing patterns contain health information isn't new – work dating back to the 1950s hints at this connection.
- North America > United States > New York (0.25)
- Asia > Middle East > Israel (0.25)
- Health & Medicine > Consumer Health (1.00)
- Health & Medicine > Therapeutic Area > Psychiatry/Psychology (0.53)
Adjusting Tissue Puncture Omnidirectionally In Situ with Pneumatic Rotatable Biopsy Mechanism and Hierarchical Airflow Management in Tortuous Luminal Pathways
Lin, Botao, Zhang, Tinghua, Yuan, Sishen, Wang, Tiantian, Wang, Jiaole, Yuan, Wu, Ren, Hongliang
In situ tissue biopsy with an endoluminal catheter is an efficient approach for disease diagnosis, featuring low invasiveness and few complications. However, the endoluminal catheter struggles to adjust the biopsy direction by distal endoscope bending or proximal twisting for tissue sampling within the tortuous luminal organs, due to friction-induced hysteresis and narrow spaces. Here, we propose a pneumatically-driven robotic catheter enabling the adjustment of the sampling direction without twisting the catheter for an accurate in situ omnidirectional biopsy. The distal end of the robotic catheter consists of a pneumatic bending actuator for the catheter's deployment in torturous luminal organs and a pneumatic rotatable biopsy mechanism (PRBM). By hierarchical airflow control, the PRBM can adjust the biopsy direction under low airflow and deploy the biopsy needle with higher airflow, allowing for rapid omnidirectional sampling of tissue in situ. This paper describes the design, modeling, and characterization of the proposed robotic catheter, including repeated deployment assessments of the biopsy needle, puncture force measurement, and validation via phantom tests. The PRBM prototype has six sampling directions evenly distributed across 360 degrees when actuated by a positive pressure of 0.3 MPa. The pneumatically-driven robotic catheter provides a novel biopsy strategy, potentially facilitating in situ multidirectional biopsies in tortuous luminal organs with minimum invasiveness.
Active Inference for Energy Control and Planning in Smart Buildings and Communities
Nazemi, Seyyed Danial, Jafari, Mohsen A., Matta, Andrea
Active Inference (AIF) is emerging as a powerful framework for decision-making under uncertainty, yet its potential in engineering applications remains largely unexplored. In this work, we propose a novel dual-layer AIF architecture that addresses both building-level and community-level energy management. By leveraging the free energy principle, each layer adapts to evolving conditions and handles partial observability without extensive sensor information and respecting data privacy. We validate the continuous AIF model against both a perfect optimization baseline and a reinforcement learning-based approach. We also test the community AIF framework under extreme pricing scenarios. The results highlight the model's robustness in handling abrupt changes. This study is the first to show how a distributed AIF works in engineering. It also highlights new opportunities for privacy-preserving and uncertainty-aware control strategies in engineering applications.
- North America > United States > New Jersey > Essex County > Newark (0.04)
- North America > United States > New Jersey > Middlesex County > Piscataway (0.04)
- Europe > Italy > Lombardy > Milan (0.04)
- Energy > Power Industry (1.00)
- Information Technology > Security & Privacy (0.86)
Aerodynamic sensors could speed up autonomous vehicles
If you live in one of the roughly dozen US cities where autonomous vehicles are present, you likely recognize them by their eye-catching, spinning tops. These high-tech flappers are filled with sensors--usually a mix of LiDAR, radar, and cameras--that serve as the eyes and ears for AVs to map the world around them. But those sensor stacks are often bulky, which can impede a car's ability to cut through the air around it. That hindrance can force the car to use more energy to speed up and ultimately limit a car's overall range. In current AVs, aerodynamic considerations can take a backseat to optimal sensor functionality.
- Asia > China > Hubei Province > Wuhan (0.06)
- North America > United States > Texas (0.05)
- Automobiles & Trucks (1.00)
- Transportation > Ground > Road (0.99)
Quick fixes to stop your Windows PC from crashing
From face recognition to dynamic lock, there are options you may be unfamiliar with. Are you dealing with a Windows PC or laptop that won't stop crashing? Maybe your PC is constantly freezing or displaying error messages. We know how frustrating a PC that won't work right can be. Luckily, there are some easy ways to fix a Windows PC that is consistently crashing.
- Information Technology > Security & Privacy (1.00)
- Information Technology > Hardware (0.71)
- Information Technology > Artificial Intelligence (0.70)
Aerodynamics and Sensing Analysis for Efficient Drone-Based Parcel Delivery
Seth, Avishkar, James, Alice, Kuantama, Endrowednes, Mukhopadhyay, Subhas, Han, Richard
In an era of rapid urbanization and e-commerce growth, efficient parcel delivery methods are crucial. This paper presents a detailed study of the aerodynamics and sensing analysis of drones for parcel delivery. Utilizing Computational Fluid Dynamics (CFD), the study offers a comprehensive airflow analysis, revealing the aerodynamic forces affecting drone stability due to payload capacity. A multidisciplinary approach is employed, integrating mechanical design, control theory, and sensing systems to address the complex issue of parcel positioning. The experimental validation section rigorously tests different size payloads and their positions and impact on drones with maximum thrusts of 2000 gf. The findings prove the drone's capacity to lift a large payload that covers up to 50 percent of the propeller, thereby contributing to optimizing drone designs and sustainable parcel delivery systems. It has been observed that the drone can lift a large payload smoothly when placed above the drone, with an error rate as low as 0.1 percent for roll, pitch, and yaw. This work paved the way for more versatile, real-world applications of drone technology, setting a new standard in the field.
- Oceania > Australia > New South Wales > Sydney (0.04)
- Oceania > Australia > Australian Capital Territory (0.04)
A Survey of Pipeline Tools for Data Engineering
Mbata, Anthony, Sripada, Yaji, Zhong, Mingjun
Currently, a variety of pipeline tools are available for use in data engineering. Data scientists can use these tools to resolve data wrangling issues associated with data and accomplish some data engineering tasks from data ingestion through data preparation to utilization as input for machine learning (ML). Some of these tools have essential built-in components or can be combined with other tools to perform desired data engineering operations. While some tools are wholly or partly commercial, several open-source tools are available to perform expert-level data engineering tasks. This survey examines the broad categories and examples of pipeline tools based on their design and data engineering intentions. These categories are Extract Transform Load/Extract Load Transform (ETL/ELT), pipelines for Data Integration, Ingestion, and Transformation, Data Pipeline Orchestration and Workflow Management, and Machine Learning Pipelines. The survey also provides a broad outline of the utilization with examples within these broad groups and finally, a discussion is presented with case studies indicating the usage of pipeline tools for data engineering. The studies present some first-user application experiences with sample data, some complexities of the applied pipeline, and a summary note of approaches to using these tools to prepare data for machine learning.
- Information Technology > Services (0.68)
- Information Technology > Security & Privacy (0.46)
Adaptive morphing of wing and tail for stable, resilient, and energy-efficient flight of avian-informed drones
Jeger, Simon L., Wüest, Valentin, Toumieh, Charbel, Floreano, Dario
Avian-informed drones feature morphing wing and tail surfaces, enhancing agility and adaptability in flight. Despite their large potential, realising their full capabilities remains challenging due to the lack of generalized control strategies accommodating their large degrees of freedom and cross-coupling effects between their control surfaces. Here we propose a new body-rate controller for avian-informed drones that uses all available actuators to control the motion of the drone. The method exhibits robustness against physical perturbations, turbulent airflow, and even loss of certain actuators mid-flight. Furthermore, wing and tail morphing is leveraged to enhance energy efficiency at 8m/s, 10m/s and 12m/s using in-flight Bayesian optimization. The resulting morphing configurations yield significant gains across all three speeds of up to 11.5% compared to non-morphing configurations and display a strong resemblance to avian flight at different speeds. This research lays the groundwork for the development of autonomous avian-informed drones that operate under diverse wind conditions, emphasizing the role of morphing in improving energy efficiency.
- Oceania > New Zealand (0.04)
- North America > United States > Texas (0.04)
- North America > United States > Massachusetts (0.04)
- (2 more...)
- Transportation > Air (1.00)
- Aerospace & Defense > Aircraft (1.00)
- Energy (0.96)
- Information Technology > Robotics & Automation (0.93)