Results 91 to 100 of about 24,887 (253)

Dynamic stochastic blockmodels for time-evolving social networks

, 2014
Significant efforts have gone into the development of statistical models for analyzing data in the form of networks, such as social networks. Most existing work has focused on modeling static networks, which represent either a single time snapshot or an ...
Hero III, Alfred O., Xu, Kevin S.
core   +1 more source

Herding and Anti‐Herding Behaviour in the UK, French and German Stock Markets Before and During the Covid Pandemic

International Journal of Finance &Economics, EarlyView.
ABSTRACT This paper studies herding and anti‐herding behaviour in three European stock markets before and during the Covid‐19 pandemic by employing both static and dynamic analysis. We examine four different questions related to herding behaviour: (i) Did herding behaviour increase during the pandemic? (ii) Does herding behaviour respond differently in
Dimitrios Asteriou, Paraskevi Katsiampa, Keith Pilbeam, Alexander Tziamalis   +3 more
wiley   +1 more source

Accurate 3D maps from depth images and motion sensors via nonlinear Kalman filtering

, 2012
This paper investigates the use of depth images as localisation sensors for 3D map building. The localisation information is derived from the 3D data thanks to the ICP (Iterative Closest Point) algorithm.
Bonnabel, Silvère, Goulette, François, Hervier, Thibault   +2 more
core   +2 more sources

Using physics‐informed neural networks to quantify submarine groundwater discharge under high‐frequency tidal dynamics using heat as a tracer

Limnology and Oceanography: Methods, EarlyView.
Abstract Estimating exchange rates of submarine groundwater discharge (SGD) at high temporal resolution over extended periods remains challenging, particularly when using heat as a tracer in highly dynamic environments such as tidal systems. Currently available heat transport models struggle to accurately quantify SGD exchange rates in these settings ...
S. Frei, M. U. Munir, A. M. Seiverth, B. S. Gilfedder   +3 more
wiley   +1 more source

CK-SLAM, Crop-Row and Kinematics-Constrained SLAM for Quadruped Robots Under Corn Canopies

Agronomy
To address the localization and mapping challenges for quadruped robots autonomously scouting under corn canopies, this paper proposes CK-SLAM, a SLAM algorithm integrating robot motion constraints and crop row features.
Mingfei Wan, Xinzhi Luo, Jun Wu, Li Li, Rong Tang, Zhangjun Peng, Juanping Jiang, Shuai Zhou, Zhigui Liu   +8 more
doaj   +1 more source

Successive Mechanical Recycling of Poly(lactic Acid) by Injection Molding: Evolution of Molecular, Thermal, and Mechanical Properties

Macromolecular Materials and Engineering, EarlyView.
This study investigated how successive injection molding recycling affects the properties of poly(lactic acid) (PLA). Gel permeation chromatography showed a two‐thirds molar mass reduction after ten reprocessing cycles. Differential scanning calorimetry revealed lower glass transition and cold crystallization temperatures.
László Lendvai, Virág Luca Bódi, Martin Danko, Petar Sabev Varbanov, Sándor Kálmán Jakab   +4 more
wiley   +1 more source

Trajectory Control of Manipulator Robots With Uncertainties: A Saturated Continuous Integral Sliding Mode Approach

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This study addresses the trajectory tracking control for manipulator robots with uncertainties. The main objective is to ensure that the robot follows a desired trajectory despite the presence of uncertainties/disturbances and considering control input constraints. The approach is developed in the framework of continuous integral sliding modes.
Emanuel Ortiz‐Ortiz, Juan Eduardo Velázquez‐Velázquez, Ramón Silva‐Ortigoza, Rosalba Galván‐Guerra   +3 more
wiley   +1 more source

Identification of time-varying parameters of a monthly Budyko function in US MOPEX catchments and its implications

Journal of Hydrology: Regional Studies
Study region: Model Parameter Estimation Experiment (MOPEX) catchments across the continental United States. Study focus: The Budyko framework provides a simple yet useful method for estimating evapotranspiration (ET), traditionally used at the mean ...
Weibo Liu, Pan Liu, Lei Cheng, Xiaojing Zhang, Liting Zhou   +4 more
doaj   +1 more source

Inverse Problems and Data Assimilation

, 2019
These notes are designed with the aim of providing a clear and concise introduction to the subjects of Inverse Problems and Data Assimilation, and their inter-relations, together with citations to some relevant literature in this area.
Sanz-Alonso, Daniel, Stuart, Andrew M., Taeb, Armeen   +2 more
core  

Land data assimilation of satellite‐based surface soil moisture: Impact on atmospheric simulations over the contiguous United States

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Soil Moisture Active Passive soil moisture retrievals are assimilated into a land surface model and the resulting land reanalysis product is used to initialise the land component of coupled land‐atmosphere experiments. We show that the local impact of land data assimilation on the atmosphere is influenced by two factors: the magnitude by which it ...
Zdenko Heyvaert, Michel Bechtold, Wouter Dorigo, Jonas Mortelmans, Daniel Hagan, Joseph Santanello, Gabriëlle De Lannoy   +6 more
wiley   +1 more source