New concepts in work administration systems for space applications

1972 ◽  
Author(s):  
R. CAMPBELL
Keyword(s):  
Space Applications ◽  
New Concepts

Bio-Inspired Distributed Electroactive Polymer Actuators for Possible Space Applications: Concept Design

2008 ◽  
Vol 61 ◽  
pp. 180-185 ◽  
Author(s):  
Federico Carpi ◽  
Carlo Menon ◽  
Danilo De Rossi
Keyword(s):  
Electroactive Polymer ◽  
Concept Design ◽  
Space Applications ◽  
Natural Systems ◽  
Dielectric Elastomer Actuators ◽  
Research Activities ◽  
New Concepts ◽  
Reliability And Robustness ◽  
Technical Solutions

Technologies for space applications are often considered to be rather conservative, aimed at ensuring reliability and robustness. Nevertheless, novel concepts coming from research activities have been and are always the lymph for the development of successful and competitive new solutions. This paper presents new concepts and ideas inspired by natural systems with distributed actuation embedded in their structure, considered as ideal models for possible uses in space applications. Preliminary concepts for possible technical solutions for long-term future implementations are here proposed and briefly analyzed. Peristaltic-like actuations obtained by the use of dielectric elastomer actuators is proposed as one of the most promising solutions. Experimental performances of a single actuation unit are here presented and directions for future implementations are proposed.

scholarly journals Calculus Rules forV-Proximal Subdifferentials in Smooth Banach Spaces

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Messaoud Bounkhel
Keyword(s):  
Banach Spaces ◽  
Normal Cone ◽  
Density Theorem ◽  
Space Applications ◽  
Proximal Subdifferential ◽  
Proximal Normal Cone ◽  
Uniformly Smooth ◽  
Calculus Rules ◽  
New Concepts ◽  
Uniformly Smooth Banach Spaces

In 2010, Bounkhel et al. introduced new proximal concepts (analytic proximal subdifferential, geometric proximal subdifferential, and proximal normal cone) in reflexive smooth Banach spaces. They proved, inp-uniformly convex andq-uniformly smooth Banach spaces, the density theorem for the new concepts of proximal subdifferential and various important properties for both proximal subdifferential concepts and the proximal normal cone concept. In this paper, we establish calculus rules (fuzzy sum rule and chain rule) for both proximal subdifferentials and we prove the Bishop-Phelps theorem for the proximal normal cone. The limiting concept for both proximal subdifferentials and for the proximal normal cone is defined and studied. We prove that both limiting constructions coincide with the Mordukhovich constructions under some assumptions on the space. Applications to nonconvex minimisation problems and nonconvex variational inequalities are established.

New Concepts Evaluation of Flexible Water Bags for Space Applications

2013 ◽  
Author(s):  
Lucia Grizzaffi ◽  
Cesare Lobascio ◽  
Giorgio Boscheri ◽  
Michael T. Flynn ◽  
Arianna Pandi ◽  
...  
Keyword(s):  
Space Applications ◽  
New Concepts

Novel Approaches to Low-Voltage Scanning Electron Microscopy

1990 ◽  
Vol 48 (1) ◽  
pp. 366-367
Author(s):  
Arthur V. Jones
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Low Voltage ◽  
Electron Optics ◽  
Current Interest ◽  
New Concepts ◽  
Opportune Time ◽  
Novel Approaches ◽  
Voltage Scanning ◽  
Scanning Electron

In comparison with the developers of other forms of instrumentation, scanning electron microscope manufacturers are among the most conservative of people. New concepts usually must wait many years before being exploited commercially. The field emission gun, developed by Albert Crewe and his coworkers in 1968 is only now becoming widely available in commercial instruments, while the innovative lens designs of Mulvey are still waiting to be commercially exploited. The associated electronics is still in general based on operating procedures which have changed little since the original microscopes of Oatley and his co-workers.The current interest in low-voltage scanning electron microscopy will, if sub-nanometer resolution is to be obtained in a useable instrument, lead to fundamental changes in the design of the electron optics. Perhaps this is an opportune time to consider other fundamental changes in scanning electron microscopy instrumentation.

New Concepts in Congenital Deafness

1971 ◽  
Vol 4 (2) ◽  
pp. 431-443
Author(s):  
LaVonne Bergstrom ◽  
Janet Stewart
Keyword(s):  
Congenital Deafness ◽  
New Concepts

4D printing technology, modern era: A short review

2020 ◽  
pp. 92-111
Author(s):  
Khodadad Mostakim ◽  
Nahid Imtiaz Masuk ◽  
Md. Rakib Hasan ◽  
Md. Shafikul Islam
Keyword(s):  
Smart Materials ◽  
Computer Aided Design ◽  
Short Review ◽  
Stimuli Responsive ◽  
4D Printing ◽  
Space Applications ◽  
Printing Technology ◽  
Practical Applications ◽  
Biomedical Technologies ◽  
Novel Material

The advancement in 3D printing has led to the rapid growth of 4D printing technology. Adding time, as the fourth dimension, this technology ushered the potential of a massive evolution in fields of biomedical technologies, space applications, deployable structures, manufacturing industries, and so forth. This technology performs ingenious design, using smart materials to create advanced forms of the 3-D printed specimen. Improvements in Computer-aided design, additive manufacturing process, and material science engineering have ultimately favored the growth of 4-D printing innovation and revealed an effective method to gather complex 3-D structures. Contrast to all these developments, novel material is still a challenging sector. However, this short review illustrates the basic of 4D printing, summarizes the stimuli responsive materials properties, which have prominent role in the field of 4D technology. In addition, the practical applications are depicted and the potential prospect of this technology is put forward.

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