Webtagr - Technology News Summarizer

North American Ski Resorts Face Existential Threat: Climate Change and Environmental Regulations

2025-01-31

The North American ski industry is facing a crisis. Since the boom of the 1960s and 70s, over half of all ski resorts have closed, driven by climate change, environmental regulations, and shifting consumer demands. The study highlights the unsustainable water and energy consumption of artificial snowmaking, along with negative impacts on vegetation and wildlife. To survive, resorts must adopt sustainable practices, including investing in eco-friendly technologies, diversifying their offerings, implementing multi-resort passes, and exploring innovative ownership models to adapt to the changing climate and environmental pressures while maintaining profitability.

Affordable Vision-Based GNSS-Denied Strapdown Celestial Navigation for UAVs

2025-01-20

This paper presents a low-cost, lightweight strapdown celestial navigation solution for Uncrewed Aerial Vehicles (UAVs) operating in Global Navigation Satellite System (GNSS)-denied environments. Utilizing a modular system with a stabilized imaging system and a low-cost Attitude and Heading Reference System (AHRS), the algorithm achieves position estimates within 4 km accuracy. By performing an orbital maneuver through a full compass rotation and averaging position outputs, biases inherent in the strapdown system are nullified. An iterative method for in-flight geometric alignment of the camera with the AHRS, without external position input, is also presented. The results demonstrate the potential for low-cost celestial navigation as a redundant navigation modality in affordable, lightweight drones.

AI Tools and Critical Thinking: A Study on Cognitive Offloading

2025-01-13

A mixed-methods study of 666 participants reveals a significant negative correlation between frequent AI tool use and critical thinking skills, mediated by cognitive offloading. Younger participants showed higher AI tool dependence and lower critical thinking scores compared to older participants. The study highlights the potential cognitive costs of relying on AI, offering recommendations for educational strategies to mitigate its negative effects on critical thinking.