Results 121 to 130 of about 81,230 (240)

Dynamic Facial Expression Recognition of Learners via Adaptive Global Attention and Differential Temporal Transformer

CAAI Transactions on Intelligence Technology, EarlyView.
ABSTRACT Analysing learners' facial expressions during learning and exploring their learning processes and emotional changes are of great significance for assisting teachers' teaching and promoting smart education. In complex learning environments, static facial expression recognition fails to capture the dynamic changes of learners' expressions losing
Wei Liu, Lujia Li, Chun Yan, Yulin Zhang, Xiaochun Cheng, Xinyan Zhao, Mingshi Liu   +6 more
wiley   +1 more source

Extensions of Some Statistical Concepts to the Complex Domain

Axioms
This paper deals with the extension of principal component analysis, canonical correlation analysis, the Cramer–Rao inequality, and a few other statistical concepts in the real domain to the corresponding complex domain.
Arak M. Mathai
doaj   +1 more source

Transformation‐Equivariant Network Fused With Multi‐Stage Cascade Attention for Point Cloud Object Detection

CAAI Transactions on Intelligence Technology, EarlyView.
ABSTRACT Object detection of unmanned firefighting vehicles faces challenges such as strong electromagnetic interference, drastic lighting changes and dynamic object variations. To address these issues, we propose a two‐stage 3D point cloud object detection algorithm called TED‐CasA‐Fusion.
Jiangdong Wu, Qun Chao, Yintai Wang, Hongyuan Sun, Tengfei Zhang, Chengliang Liu   +5 more
wiley   +1 more source

Representation of obligate groundwater‐dwelling copepod diversity in European protected areas

Conservation Biology, EarlyView.
Abstract Groundwaters sustain diverse surface ecosystems and are populated by metazoan species, mostly invertebrates, that provide fundamental ecological functions and are often of prominent conservation value due to narrow endemism and high phylogenetic rarity.
Francesco Cerasoli, Lorenzo Ricci, Mattia Di Cicco, Tiziana Di Lorenzo, Michele Di Musciano, Stefano Mammola, Emma Galmarini, Diana Maria Paola Galassi   +7 more
wiley   +1 more source

The m-component super KP hierarchy in Kac-van de Leur version

Physics Letters B
In this paper, the m-component super KP hierarchy in form of free superfermions is constructed by Clifford superalgebra. The super bosonic counterpart of this hierarchy is described by using the vertex operators.
Huizhan Chen
doaj   +1 more source

Scale‐robust fibre orientation analysis of hair using two‐dimensional Fourier transform

International Journal of Cosmetic Science, EarlyView.
We present a simple and robust method to quantify hair fibre orientation using 2D‐DFT. It works with standard images and extracts directional features at multiple scales. This enables objective evaluation of cosmetic treatments and product effects. Abstract Objective To address the current lack of standardized tools for evaluating hair appearance in ...
Motoki Takeda, Sinyoung Lee, Ken Kiyono
wiley   +1 more source

Multi‐period optimal bidding strategy with energy storage

International Transactions in Operational Research, EarlyView.
Abstract We consider a setting where a wind power producer (WPP) bids in a multi‐period ahead electricity market. The new elements we take into account are (i) the integration of electricity storage devices, (ii) the extension from single‐period to multi‐period optimal bidding, (iii) the implementation of a short‐sighted strategy versus a far‐sighted ...
Azin Khaleghi, Wouter Baar, Dario Bauso
wiley   +1 more source

An iterated greedy‐based metaheuristic with local search for the rank pricing problem

International Transactions in Operational Research, EarlyView.
Abstract The rank pricing problem involves determining optimal prices for a set of products while accounting for customers' budgets and preferences. This study develops an iterated greedy‐based metaheuristic to efficiently solve this problem. The core idea is to generate a sequence of solutions by iteratively applying destruction and reconstruction ...
Herminia I. Calvete, Carmen Galé, Aitor Hernández, José A. Iranzo   +3 more
wiley   +1 more source

Do Fair Value Adjustments Excluded From Net Income Convey New Information That Is Complementary to GAAP Earnings?

Journal of Business Finance &Accounting, EarlyView.
ABSTRACT We use banks’ quarterly fair value disclosures to perform the first short‐window event study of fair value adjustments excluded from net income and offer three main results. First, we find that fair value adjustments for banks’ loan portfolios are positively associated with short‐window stock returns and that they impact investors’ response to
John L. Campbell, Samuel O. Davidson, Catherine Shakespeare   +2 more
wiley   +1 more source

Distribution and ecology of the four Macrourus species by‐caught in the longline fishery at South Georgia, Southern Ocean

Journal of Fish Biology, EarlyView.
Abstract Although Macrourus species are the main by‐catch across Southern Ocean longline fisheries, including around South Georgia, the lack of species‐specific data has hindered effective management and ecological understanding. Aggregation of macrourids at genus level masks critical interspecific differences in life‐history strategies and ...
José Abreu, Philip R. Hollyman, Jennifer J. Freer, M. L. Romero Martínez, José P. Queirós, Timothy Jones, Richard A. Phillips, José C. Xavier, Martin A. Collins   +8 more
wiley   +1 more source