Results 131 to 140 of about 4,895,065 (306)
Advanced Optical Materials, EarlyView.Central and terminal ring fusions of per‐peri‐perbenzo[7]helicene (PB[7]H) yield novel helical polycyclic aromatic hydrocarbons (HPAHs). The migration of Clar's aromatic sextets governs the inner‐rim stiffness. This topology‐directed strategy bridges the discrete optical gaps of homologous series. Transition moment density (TMD) analysis visualizes the
Zhibo Liu +3 more
wiley +1 more source
Seven‐Fold Compression of Mid‐Infrared Pulses Using a Series of Titanium Dioxide Plates
Advanced Optical Materials, EarlyView.Here, a sequence of three titanium dioxide plates is used to compress a mid‐infrared pulse from 103.9 femtoseconds to 14.1 femtoseconds (about two optical cycles) without the use of external dispersion compensation. The approach maintains high efficiency and produces pulses with a stable carrier‐envelope phase, providing a compact platform for ...
André M. Côté +4 more
wiley +1 more source
The Density Function of the Stochastic SIQR Model with a Two-Parameters Mean-Reverting Process
AxiomsThis study develops a stochastic SIQR epidemic model with mean-reverting Ornstein–Uhlenbeck (OU) processes for both transmission rate β(t) and quarantine release rate k(t); this is distinct from existing non-white-noise stochastic epidemic models, most ...
Huina Zhang +3 more
doaj +1 more source
Information Transmission Strategies for Self‐Organized Robotic Aggregation
Advanced Robotics Research, EarlyView.In this review, we discuss how information transmission influences the neighbor‐based self‐organized aggregation of swarm robots. We focus specifically on local interactions regarding information transfer and categorize previous studies based on the functions of the information exchanged.
Shu Leng +5 more
wiley +1 more source
The Dynamic Behavior of a Stochastic SEIRM Model of COVID-19 with Standard Incidence Rate
MathematicsThis paper studies the dynamic behavior of a stochastic SEIRM model of COVID-19 with a standard incidence rate. The existence of global solutions for dynamic system models is proven by integrating stochastic process theory and the concept of stopping ...
Yuxiao Zhao, Hui Wang, Dongxu Wang
doaj +1 more source
Income distribution and macroeconomics in Colombia
, 2007 This paper studies the relation between macroeconomic variables and the distribution of income in Colombia. We relate the dynamics of aggregate economic variables with the cross-section of disaggregate income to determine the transmission and propagation
Birchenall, Javier A.
core
Continual Learning for Multimodal Data Fusion of a Soft Gripper
Advanced Robotics Research, EarlyView.Models trained on a single data modality often struggle to generalize when exposed to a different modality. This work introduces a continual learning algorithm capable of incrementally learning different data modalities by leveraging both class‐incremental and domain‐incremental learning scenarios in an artificial environment where labeled data is ...
Nilay Kushawaha, Egidio Falotico
wiley +1 more source
Estimation of the long memory parameter in non stationary models: A Simulation Study [PDF]
In this paper we perform a Monte Carlo study based on three well-known semiparametric estimates for the long memory fractional parameter. We study the efficiency of Geweke and Porter-Hudak, Gaussian semiparametric and wavelet Ordinary Least-Square ...
Mohamed Boutahar, Rabeh Khalfaoui2
core
Advanced Robotics Research, EarlyView.Pak Biawak, a necrobot, embodies an unusual fusion of biology and robotics. Designed to repurpose natural structures after death, it challenges conventional boundaries between nature and engineering. Its movements are precise yet unsettling, raising questions about sustainability, ethics, and the untapped potential of biointegrated machines.
Leo Foulds +2 more
wiley +1 more source
Dynamics of a Dengue Transmission Model with Multiple Stages and Fluctuations
MathematicsA vector–host model of dengue with multiple stages and independent fluctuations is investigated in this paper. Firstly, the existence and uniqueness of the positive solution are shown by contradiction.
Zuwen Wang +7 more
doaj +1 more source