Trinucleon system in a two-body model: Coulomb effect on bound and scattering states

The interest in actuators based on dielectric elastomer films as a promising technology in robotic and mechatronic applications is increasing. The overall actuator performances are influenced by the design of both the active film and the film supporting frame. This paper presents a single-acting actuator which is capable of supplying a constant force over a given range of motion. The actuator is obtained by coupling a rectangular film of silicone dielectric elastomer with a monolithic frame designed to suitably modify the force generated by the dielectric elastomer film. The frame is a fully compliant mechanism whose main structural parameters are calculated using a pseudo-rigid-body model and then verified by finite element analysis. Simulations show promising performance of the proposed actuator.

Download Full-text

Context-Aware Holographic Communication Based on Semantic Knowledge Extraction

Wireless Personal Communications ◽

10.1007/s11277-021-08560-7 ◽

2021 ◽

Author(s):

Agata Manolova ◽

Krasimir Tonchev ◽

Vladimir Poulkov ◽

Sudhir Dixir ◽

Peter Lindgren

Keyword(s):

Deep Neural Networks ◽

Data Gathering ◽

Communication Technologies ◽

Knowledge Extraction ◽

Semantic Knowledge ◽

Business Model Innovation ◽

Context Aware ◽

Human Body Model ◽

Network Resource ◽

Body Model

AbstractAugmented, mixed and virtual reality are changing the way people interact and communicate. Five dimensional communications and services, integrating information from all human senses are expected to emerge, together with holographic communications (HC), providing a truly immersive experience. HC presents a lot of challenges in terms of data gathering and transmission, demanding Artificial Intelligence empowered communication technologies such as 5G. The goal of the paper is to present a model of a context-aware holographic architecture for real time communication based on semantic knowledge extraction. This architecture will require analyzing, combining and developing methods and algorithms for: 3D human body model acquisition; semantic knowledge extraction with deep neural networks to predict human behaviour; analysis of biometric modalities; context-aware optimization of network resource allocation for the purpose of creating a multi-party, from-capturing-to-rendering HC framework. We illustrate its practical deployment in a scenario that can open new opportunities in user experience and business model innovation.

Download Full-text

Effective Interactions of Relativistic Composite Particles in Unified Nonlinear Spinor-Field Models. I

Zeitschrift für Naturforschung A ◽

10.1515/zna-1985-0105 ◽

1985 ◽

Vol 40 (1) ◽

pp. 14-28

Author(s):

H. Stumpf

Keyword(s):

Spinor Field ◽

Bound States ◽

Composite Particle ◽

Composite Particles ◽

Statistical Interpretation ◽

Particle Spectrum ◽

Nonlinear Spinor ◽

Effective Interactions ◽

Scattering States ◽

Diagonal Part

Unified nonlinear spinor field models are selfregularizing quantum field theories in which all observable (elementary and non-elementary) particles are assumed to be bound states of fermionic preon fields. Due to their large masses the preons themselves are confined. In preceding papers a functional energy representation, the statistical interpretation and the dynamical equations were derived. In this paper the dynamics of composite particles is discussed. The composite particles are defined to be eigensolutions of the diagonal part of the energy representation. Corresponding calculations are in preparation, but in the present paper a suitable composite particle spectrum is assumed. It consists of preon-antipreon boson states and threepreon- fermion states with corresponding antifermions and contains bound states as well as preon scattering states. The state functional is expanded in terms of these composite particle states with inclusion of preon scattering states. The transformation of the functional energy representation of the spinor field into composite particle functional operators produces a hierarchy of effective interactions at the composite particle level, the leading terms of which are identical with the functional energy representation of a phenomenological boson-fermion coupling theory. This representation is valid as long as the processes are assumed to be below the energetic threshold for preon production or preon break-up reactions, respectively. From this it can be concluded that below the threshold the effective interactions of composite particles in a unified spinor field model lead to phenomenological coupling theories which depend in their properties on the bound state spectrum of the self-regularizing spinor theory.

Download Full-text