Results 41 to 50 of about 20,992,045 (204)

From living to fossil: ancestral state reconstruction of leaf architecture in extant Lauraceae and its relevance for the fossil record

Palaeontology, Volume 69, Issue 3, 2026.
Abstract Lauraceae are a tropical–subtropical angiosperm family that exhibit significant diversity and a rich fossil record, primarily of leaves found worldwide from the Cretaceous to the present. However, the taxonomic placement of many fossil leaves remains uncertain because of morphological convergence and limited variation in leaf characters among ...
Marco A. Rubalcava‐Knoth, Angélica Quintanar‐Castillo, Ana L. Hernández‐Damián, Sergio R. S. Cevallos‐Ferriz   +3 more
wiley   +1 more source

Interrupted-Sampling and Non-Uniform Periodic Repeater Jamming against mDT-STAP System

, 2022
The difference between sampling data and detection data can degrade the performance of space-time adaptive processing (STAP). A jamming algorithm with a non-uniform periodic repeater based on interrupted-sampling is proposed against the reduced ...
Jia Li, Xiaohu Duan, Jiyang Li, Peng Bai
core   +1 more source

An Overview on Sparse Recovery-based STAP

Leida xuebao, 2014
This paper gives a brief review on the Sparse-Recovery (SR)-based Space-Time Adaptive Processing (STAP) technique. First, the motivation for introducing sparse recovery into STAP is presented.
Ma Ze-qiang, Wang Xi-qin, Liu Yi-min, Meng Hua-dong   +3 more
doaj   +1 more source

Using multilayer socioecological networks to assess ecosystem service flow in a subsistence farming community in Papua New Guinea

People and Nature, Volume 8, Issue 4, Page 854-870, April 2026.
Abstract Ecosystem services are rapidly degrading under anthropogenic pressure. Therefore, it is increasingly important to understand how ecosystem services flow, particularly at local scales, where people directly rely on nature for their livelihoods and well‐being. Many ecosystem services are underpinned by ecological (e.g.
Anna Stanworth, Kiole Imale, Brus Isua, Anne M. Anji, Francesca F. Dem, Vojtech Novotný, Harry E. R. Shepherd, Kelvin S.‐H. Peh, Rebecca J. Morris   +8 more
wiley   +1 more source

Atmospheric Induced Errors in Space-Time Adaptive Processing [PDF]

, 1997
This thesis examines the effects of atmospheric turbulence-induced phase perturbations on the performance of ground-based Space-Time Adaptive Processing (STAP) systems.
Naga, Vinod D.
core   +1 more source

Land Use and Economic Trade‐Offs of Large‐Scale Solar in Agricultural Regions: Marginal National Impacts, Significant Regional Variations

Australian Journal of Agricultural and Resource Economics, Volume 70, Issue 2, Page 395-409, April 2026.
ABSTRACT Large‐scale solar generation is critical for energy transitions. In Australia, increased solar production to meet emission targets means its land footprint increasingly competes with agricultural land. Understanding the scale and location of agricultural land use change and potential profitability losses from large‐scale solar farms is ...
Raymundo Marcos‐Martinez, Stephen Snow, Tim Capon, Quoc Anh Nguyen, Andrea Walton, Stuart Whitten, Benjamin Smith   +6 more
wiley   +1 more source

Stap2Go Test: Validity and Sensitivity/Specificity for Attention and Executive Function Assessment

Applied Cognitive Psychology, Volume 40, Issue 2, March/April 2026.
ABSTRACT Attention and executive function difficulties are common in many neurodevelopmental conditions and significantly impact psychological well‐being. However, access to cognitive assessment remains limited due to high costs and resource constraints.
Teresa Rossignoli‐Palomeque, Cristina Romero‐Casas   +1 more
wiley   +1 more source

A Joint Sparse Space-Time Adaptive Processing Method

IEEE Access
At present, most of the sparse space-time adaptive processing(STAP) methods focus on exploiting the clutter sparsity. In this paper, different from the present sparse STAP methods, both the clutter sparsity and the target sparsity in STAP are considered ...
Jinfeng Hu, Yuyan Xia, Huiyong Li, Jing Liang, Tao Lin   +4 more
doaj   +1 more source

A Grid-Less Total Variation Minimization-Based Space-Time Adaptive Processing for Airborne Radar

IEEE Access, 2020
Sparse recovery (SR) based space-time adaptive processing (STAP) has attracted much attention due to its small requirement of snapshots in the estimation of the clutter plus noise covariance matrix (CNCM).
Yuyu Su, Tong Wang, Fuyu Tao, Zhongyue Li   +3 more
doaj   +1 more source

Robust Covariance Matrix Estimation for Radar Space-Time Adaptive Processing (STAP)

CoRR, 2016
Estimating the disturbance or clutter covariance is a centrally important problem in radar space time adaptive processing (STAP). The disturbance covariance matrix should be inferred from training sample observations in practice. Large number of homogeneous training samples are generally not available because of difficulty of guaranteeing target free ...
openaire   +2 more sources