Results 171 to 180 of about 8,788,792 (362)

Space-Time Codes and Concatenated Channel Codes for Wireless Communications

, 2002
Following a brief historical perspective on channel coding, an introduction to space–time block codes is given. The various space–time codes considered are then concatenated with a range of channel codecs, such as convolutional and block-based turbo ...
Liew, T.H., Hanzo, Lajos
core  

Powder Optimization Strategies for Binder Jetting Printing of BaTiO3 and Ba0,6Sr0,4TiO3 Ceramics

Advanced Engineering Materials, EarlyView.
Powder optimization is investigated to enable binder jetting of BaTiO3 and Ba0.6Sr0.4TiO3 ferroelectric ceramics. The antagonistic relationship between flowability and binder compatibility is addressed through binder impregnation of granulated powders and fumed silica addition to fine powders.
Fanny Pruvost, Lionel Presmanes, Soléna Colin, Marie Vidal, Sophie Guillemet‐Fritsch   +4 more
wiley   +1 more source

International Cooperation in Overcoming Digital Inequality: Legal Frameworks, Barriers and Development Parameters

Journal of Digital Technologies and Law
Objective: based on a systematic analysis of the actual level of international cooperation in overcoming digital inequality, to determine the parameters of its further development, taking into account modern legal and other barriers and global challenges
K. M. Belikova, R. Dias Martins, E. T. Kazanba   +2 more
doaj   +1 more source

The New Space Ecosystem : Insights from the Architecture of Digital Platforms [PDF]

Originally confined to the governmental sector, the space ecosystem has recently undergone a transformative shift with the private sector’s penetration redefining the established dynamics.
Kuusniemi, Heidi, Kohtamäki, Marko, Abed Alghani, Khaled   +2 more
core   +1 more source

Field Report from Collaborative Research Center 1625: Heterogeneous Research Data Management Using Ontology Representations

Advanced Engineering Materials, EarlyView.
A unified research data management framework for heterogeneous materials data is presented. The system integrates multimodal datasets using ontologies and knowledge graphs, enabling interoperability and FAIR (findable, accessible, interoperable, reusable) data principles. By linking data across scales and workflows, it supports reproducible, Artifitial
Doaa Mohamed, Samuel García Vázquez, Behnam Mardani, Victor Dudarev, Alfred Ludwig, Maribel Acosta, Markus Stricker   +6 more
wiley   +1 more source

Towards Defect Phase Diagrams: From Research Data Management to Automated Workflows

Advanced Engineering Materials, EarlyView.
A research data management infrastructure is presented for the systematic integration of heterogeneous experimental and simulation data required for defect phase diagrams. The approach combines openBIS with a companion application for large‐object storage, automated metadata extraction, provenance tracking and federated data access, thereby supporting ...
Khalil Rejiba, Sang‐Hyeok Lee, Christina Gasper, Martina Freund, Sandra Korte‐Kerzel, Ulrich Kerzel   +5 more
wiley   +1 more source

NASA Technical Exhibit: Space for the Benefit of Mankind, Seattle World's Fair, 1962

, 1962
From the introduction: The National Aeronautics and Space Administration (NASA) is a civilian agency established in 1958 by the Congress of the United States to control and manage the Nation's programs for peaceful aeronautical and space activities ...
National Aeronautics and Space Administration
core  

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

Advanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares, Nadège Bouchonneau, Christian Jochum, Donald Radford   +3 more
wiley   +1 more source

Digital twins as space media

New Media & Society
NASA scientists have claimed that the rescue of the stricken Apollo 13 spacecraft in 1970 created the first digital twin system. In this article, I examine NASA’s narrative, which is gathering consensus as the origin story of digital twin technologies, with two main points of focus.
openaire   +1 more source

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

Advanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source