Results 51 to 60 of about 2,653,958 (217)

GNSS Software-Defined Radio: History, Current Developments, and Standardization Efforts

Navigation
Taking the work conducted by the global navigation satellite system (GNSS) software-defined radio (SDR) working group during the last decade as a seed, this contribution summarizes, for the first time, the history of GNSS SDR development.
Thomas Pany, Dennis Akos, Javier Arribas, M. Zahidul H. Bhuiyan, Pau Closas, Fabio Dovis, Ignacio Fernandez-Hernandez, Carles Fernández–Prades, Sanjeev Gunawardena, Todd Humphreys, Zaher M. Kassas, José A. López Salcedo, Mario Nicola, Mark L. Psiaki, Alexander Rügamer, Young-Jin Song, Jong-Hoon Won   +16 more
doaj   +1 more source

Rivers as Natural Capital Assets: A Quick Scoping Review to Assess the Evidence Linking River Asset Condition to Changes in the Flow of Ecosystem Services

River Research and Applications, EarlyView.
ABSTRACT River managers are beginning to adopt natural capital approaches in practice. However, while it is crucial for river management, the link between river asset condition and the flow of ecosystem services is poorly understood. In this study, we conducted a Quick Scoping Review (QSR) of the research into river asset condition and ecosystem ...
Valentina Zini, Natalie Johnson, Alice Crouch, Gerard Lenagan, Chris Cooper, Marc Naura, Imogen Speck, Jim Rouquette   +7 more
wiley   +1 more source

Formulation and Characterization of One-Way Radiometric Tracking with the Iris Radio Using a Chip-Scale Atomic Clock

Navigation
The Iris software radio has been updated to collect one-way Doppler and range data for potential use with deep space autonomous navigation. One-way radiometric data have found limited use because a typical radio oscillator is not sufficiently stable for ...
Todd Ely, Zaid Towfic, Dana Sorensen
doaj   +1 more source

Predictive habitat occupancy models for North American river otters along inland streams in New Jersey

Wildlife Biology, EarlyView.
The North American river otter Lontra canadensis is a semi‐aquatic furbearer species that historically ranged throughout North America. Starting in the mid‐1800s and continuing through the early 1900s, the negative effects associated with anthropogenic disturbances (i.e.
Christopher K. Williams, Curtis Bennett, Hannah Schley, Paul Castelli   +3 more
wiley   +1 more source

The Blueprint of the European Eel Life Cycle: Does Life‐History Strategy Undermine or Provide Hope for Population Recovery?

Fish and Fisheries, EarlyView.
ABSTRACT The life cycle of the European eel (Anguilla anguilla) is inherently risky because it relies on the successful migration of larvae and adults across thousands of kilometres of the Atlantic Ocean. In between these migrations, eels need to grow and develop to maximise their potential for successful reproduction.
David Righton, Pieterjan Verhelst, Håkan Westerberg   +2 more
wiley   +1 more source

Biocentric Work in the Anthropocene: How Actors Regenerate Degenerated Natural Commons

Journal of Management Studies, EarlyView.
Abstract As natural commons vital to selves, organizations, and institutions collapse under cumulative anthropogenic pressures, can human agency still reverse some of the damage already done? This article explores how emerging forms of social symbolic work regenerate degenerated natural commons.
Laura Albareda, Oana Branzei
wiley   +1 more source

Improved context-sensitive transformer model for inland vessel trajectory prediction [PDF]

Proceedings of the 2023 IEEE 26th International Conference on Intelligent Transportation Systems (ITSC), Bilbao, Spain, pp. 5903-5908
Physics-related and model-based vessel trajectory prediction is highly accurate but requires specific knowledge of the vessel under consideration which is not always practical. Machine learning-based trajectory prediction models do not require expert knowledge, but rely on the implicit knowledge extracted from massive amounts of data.
arxiv   +1 more source

Incorporating Navigation Context into Inland Vessel Trajectory Prediction: A Gaussian Mixture Model and Transformer Approach [PDF]

2024 27th International Conference on Information Fusion (FUSION)
Using data sources beyond the Automatic Identification System to represent the context a vessel is navigating in and consequently improve situation awareness is still rare in machine learning approaches to vessel trajectory prediction (VTP). In inland shipping, where vessel movement is constrained within fairways, navigational context information is ...
arxiv   +1 more source

Vessel-following model for inland waterways based on deep reinforcement learning [PDF]

arXiv, 2022
While deep reinforcement learning (RL) has been increasingly applied in designing car-following models in the last years, this study aims at investigating the feasibility of RL-based vehicle-following for complex vehicle dynamics and strong environmental disturbances.
arxiv  

Sand‐Hungry: Accumulations, Erosions, and the Self‐Feeding Logic of Beach Renourishment

Antipode, Volume 57, Issue 3, Page 1105-1125, May 2025.
Abstract This paper interrogates the metaphor of beach renourishment to show how this common coastal engineering practice feeds its own logic. In a coastal town in Florida, renourishment (the practice of dredging sand to combat erosion) shores up the coastline materially and, importantly, politically, as a wider beachfront protects coastal property ...
Kimberly Schoemaker
wiley   +1 more source