Results 91 to 100 of about 13,392 (258)

Greening and Divergent Stability Responses in Central Asian Mountain Grasslands Under the Grassland Ecological Compensation Policy of China

Land Degradation &Development, EarlyView.
ABSTRACT Mountain grasslands of Central Asia, recognized as a globally significant biodiversity hotspot and a vital pastoral resource, are presently experiencing profound transformations driven by climate change and evolving grazing practices. This study investigated the multidimensional dynamics of ecosystem stability in the Bayinbuluk grassland of ...
Xiaokang Liu, Yanming Gong, Yanyan Liu, Anwar Mohammat, Kaihui Li, Xuejun Liu   +5 more
wiley   +1 more source

GNTI: Gaussian noise-based trajectory imputation via self-supervised learning

Journal of Highway and Transportation Research and Development
Trajectory imputation aims to reconstruct complete movement sequences from noisy or incomplete GPS data, crucial for intelligent transportation systems (ITS).
Siqi Liu, Penghao Zhao, Lei Dong, Na Dong, Liyuan Ding, Guangshi Pei   +5 more
doaj   +1 more source

A Physics‐Informed Koopman Operator Framework for Decentralized Discrete‐Time Sequential Control of a Modular Aerial Parcel Delivery Robot

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This paper presents a Physics‐Informed Koopman Operator (PIKO) framework integrated with a discrete‐time Sequential Action Control (SAC) for real‐time, decentralized control of a modular aerial parcel delivery robot composed of multiple independently actuated propeller modules.
Archit Krishna Kamath, Peng Shi, Ramesh K. Agarwal   +2 more
wiley   +1 more source

Optimal Point-to-Point Trajectory Tracking of Redundant Manipulators using Generalized Pattern Search

International Journal of Advanced Robotic Systems, 2008
Optimal point-to-point trajectory planning for planar redundant manipulator is considered in this study. The main objective is to minimize the sum of the position error of the end-effector at each intermediate point along the trajectory so that the end ...
Thi Rein Myo, Atef A. Ata
doaj  

Pteris madhusoodananii (Pteridaceae), a new fern species from India

Nordic Journal of Botany, EarlyView.
Pteris madhusoodananii sp. nov. (Pteridaceae), from the Kolli hills of Eastern Ghats, India, is described. The new taxon is morphologically distinct, characterized by a unique lamina texture and coloration, specific pinna‐pinnule architecture and distinct spore micromorphology.
Kalathil Sethumadhavan Abhilash, Alex Philip Alen, Thekkekara Suresh Gayathri, Veerankutty Suresh, Jose Sojan, V. K. Sreenivas, Lakshmanan Leeja   +6 more
wiley   +1 more source

Semantic Enrichment of GPS Trajectories

, 2012
Semantic annotation of GPS trajectories helps us to recognize the interests of the creator of the GPS trajectories. Automating this trajectory annotation circumvents the requirement of additional user input. To annotate the GPS traces automatically, two types of automated input are required: 1) a collection of possible annotations, and 2) a collection ...
de Graaff, V., van Keulen, Maurice, de By, R.A.   +2 more
openaire   +1 more source

Age ratio in groups of a social ungulate affects epizoochorous dispersal and diaspore exchanges

Oikos, EarlyView.
Animal‐mediated seed dispersal is a key process in plant population dynamics, species distribution and ecosystem functioning. As long‐distance dispersal agents, ungulates help to maintain native plant populations facing abiotic changes in their habitat and habitat fragmentation or habitat loss.
Antoine Roux, Cloé Balson, Morgane Audiguier, Marie Battista, Didier Marcon, Olivier Pays, Christophe Baltzinger   +6 more
wiley   +1 more source

Discover the road sequences of bus lines using bus stop information and historical bus locations

International Journal of Distributed Sensor Networks, 2019
Discovering the road sequences traveled by the bus lines is of great importance for public transport management, such as bus journey time prediction and multimodal travel route recommendation, as the road sequence provides important information on ...
Ying Zhou, Guiyuan Jiang, Guifeng Jiang
doaj   +1 more source

Home and away: allometry and climate drive morphology of European rabbits in their native and introduced range

Oikos, EarlyView.
Climatic conditions shape phenotypic evolution by driving adaptations that optimise organismal function. Invasive species provide valuable systems to study these processes, as they often encounter novel climatic conditions in their introduced ranges. The European rabbit Oryctolagus cuniculus, native to the Iberian Peninsula, has established populations
Rishab Pillai, Natasha Lee Hiotis, Christine Böhmer, Cécile Callou, Thomas J. Nelson, Irina Ruf, Thomas J. Sanger, Julia Schaar, Kévin Le Verger, Madeleine Geiger, Brian Kraatz, Emma Sherratt   +11 more
wiley   +1 more source

Digital surveillance of animals and nature recovery

People and Nature, EarlyView.
Abstract Digital surveillance technologies (DSTs) are widely applied in nature recovery for their potential to generate novel data on species and ecosystems through digital tracking, automation (e.g. from hazardous locations) and from newly recruited citizen scientists.
William M. Adams
wiley   +1 more source