Results 11 to 20 of about 545,608 (316)

Graph-Driven Micro-Expression Rendering with Emotionally Diverse Expressions for Lifelike Digital Humans [PDF]

open access: yesBiomimetics
Micro-expressions, characterized by brief and subtle facial muscle movements, are essential for conveying nuanced emotions in digital humans, yet existing rendering techniques often produce rigid or emotionally monotonous animations due to the inadequate
Lei Fang   +4 more
doaj   +2 more sources

Dendrimers for Drug Delivery: Where Do We Stand in 2023?

open access: yesPharmaceutics, 2023
Dendrimers are highly symmetric, hyperbranched macromolecules consisting of repeating structural units [...]
Evgeny K. Apartsin
doaj   +1 more source

PT symmetric dynamics in counter-rotating gyroscopic mechanical systems

open access: yesAIP Advances, 2021
Parity-time (PT) symmetry was first studied in quantum mechanical systems with a non-Hermitian Hamiltonian whose observables are real-valued. Most existing designs of PT symmetric systems in electronics, optics, and acoustics rely on an exact balance of ...
Bin Dong, Chengzhi Shi, Robert G. Parker
doaj   +1 more source

Structural analysis of a scissor structure [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2020
This paper presents equilibrium mechanics and a finite element model for analysing a scissor structure that contains pivots with zero bending stiffness representing structural instability.
I. Ario   +6 more
doaj   +1 more source

Symmetric core-cohesive blockmodel in preschool children's interaction networks.

open access: yesPLoS ONE, 2020
Researchers have extensively studied the social mechanisms that drive the formation of networks observed among preschool children. However, less attention has been given to global network structures in terms of blockmodels.
Marjan Cugmas   +3 more
doaj   +1 more source

Symmetric and Asymmetric Configurations for a Multilevel Inverter Using Less Number of Power Switches [PDF]

open access: yesInternational Journal of Industrial Electronics, Control and Optimization, 2018
This paper proposes a multilevel inverter that produces many steps in output voltage using fewer power electronic switches. The configuration of the proposed inverter is modular and extendable.
Farzad Sedaghati, Naser Hashemipour
doaj   +1 more source

Crystal structure of 3-(benzo[d]thiazol-2-yl)-6-methyl-2H-chromen-2-one

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2023
The molecule of the title compound, C17H11NO2S, is almost planar, with an interplanar angle of 3.01 (3)° between the benzothiazole and chromene ring systems. A short intramolecular S...O=C contact of 2.727 (2) Å is observed.
Amira E. M. Abdallah   +2 more
doaj   +1 more source

Two-Dimensional Conjugated Covalent Organic Framework Films via Oxidative C–C Coupling Reactions at a Liquid–Liquid Interface

open access: yesOrganic Materials, 2021
The construction of conjugated covalent organic frameworks (COFs) with strong C–C bond linkage remains a big challenge. Herein, we report a new strategy by using an oxidative C–C coupling reaction between electron-rich pyrrole rings at a liquid–liquid ...
Shaofei Wu   +11 more
doaj   +1 more source

Biaxial Angular Acceleration Sensor with Rotational-Symmetric Spiral Channels and MEMS Piezoresistive Cantilevers

open access: yesMicromachines, 2021
Angular acceleration sensors are attracting attention as sensors for monitoring rotational vibration. Many angular acceleration sensors have been developed; however, multiaxis measurement is still in a challenging stage.
Rihachiro Nakashima, Hidetoshi Takahashi
doaj   +1 more source

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