Computational Structural Form Finding and Optimization of Shell Structures

p. 611-617The purpose of this research is to analyze the structural behaviour of shell structures by studying the way (applied) loads naturally flow through shell structures to their supports and relating this flow off forces to the shell geometry. To unlock this secret will give a fundamental understanding of the behaviour of shell structures and thus the means to design these with form efficiently and elegance. Shells have geometrical and structural properties, which have a close relationship, and determine its structural performance. The newly developed thrust network analysis [1] lays a direct relation in a graphical way between the geometry of a shell and possible funicular solutions under gravity loading, which gives understanding and provides the means for developing new shapes. The ¿rain flow¿ analysis [2] makes the relation between the shell geometry and the flow of loads applied to its surface. Similar with the flow of shear forces in plates in bending the ¿rain flow¿ analysis gives the relationship between the initial curvatures of the shell surface geometry and the curvatures along the shell¿s surface which represent the load path of the flow of forces of the shell and the internal forces. By combining these algorithms and analysis methods, a further understanding of the form force relationship of shells can be obtained. This unified approach is the basis for a new computational method for form finding and optimizing shell structures.Borgart, A.; Tiggeler, L. (2010). Computational Structural Form Finding and Optimization of Shell Structures. Editorial Universitat Politècnica de València. http://hdl.handle.net/10251/686

A CCSDS Software System for a Single-Chip On-Board Computer of a Small Satellite

The work presented in this paper is part of a Surrey Space Centre research project that aims to reduce the size of an on-board computer to a single chip facilitating further miniaturisation of small satellites. The paper is concerned with a communication system, specifically designed to meet the needs of a single-chip onboard computer - a simplified yet reliable and automated standalone alternative software implementation of the Consultative Committee of Space Data Systems (CCSDS) protocol communicating with a standard universal asynchronous receiver-transmitter (UART) peripheral. Details of the design and implementation stages of a CCSDS package coded in the language C are given. A thin hardware layer is described which translates the asynchronous UART stream into a CCSDS compliant synchronous stream. Synthesis results targeted at Actel FPGAs are presented taking into account single event upset tolerant coding styles

De gebiedsontwikkelaar:onderzoeksrapport

Onderzoek in opdracht van het Kenniscentrum NoorderRuimte. Het praktijkdoel is het opzetten van een kennisnetwerk en het onderzoeken naar het huidige onderwijsaanbod op het gebied van gebiedsontwikkeling en te onderzoeken in hoeverre dit aansluit op het vak van gebiedsontwikkelaar. Met dit onderzoek wordt het fundament gelegd om met vervolgonderzoek verder aan het praktijkdoel te kunnen werken. De centrale vraag van dit onderzoek luidt: Wat zijn de kenmerken van de sociale en de fysieke taken van de gebiedsontwikkelaar

Inflammation-induced mitochondrial and metabolic disturbances in sensory neurons control the switch from acute to chronic pain

Pain often persists in patients with an inflammatory disease, even when inflammation has subsided. The molecular mechanisms leading to this failure in pain resolution and the transition to chronic pain are poorly understood. Mitochondrial dysfunction in sensory neurons links to chronic pain, but its role in resolution of inflammatory pain is unclear. Transient inflammation causes neuronal plasticity, called hyperalgesic priming, which impairs resolution of pain induced by a subsequent inflammatory stimulus. We identify that hyperalgesic priming in mice increases the expression of a mitochondrial protein (ATPSc-KMT) and causes mitochondrial and metabolic disturbances in sensory neurons. Inhibition of mitochondrial respiration, knockdown of ATPSCKMT expression, or supplementation of the affected metabolite is sufficient to restore resolution of inflammatory pain and prevents chronic pain development. Thus, inflammation-induced mitochondrial-dependent disturbances in sensory neurons predispose to a failure in resolution of inflammatory pain and development of chronic pain

Joomla! 25 Beginner's Guide

Written with a fast-paced but friendly and engaging approach, this Packt Beginner's guide is designed to be placed alongside the computer as your guide and mentor. Step-by-step tutorials are bolstered by explanations of the reasoning behind what you are doing. You will quickly pick up the necessary skills, tips, and tricks for building a successful Joomla! website. This book is written for beginners to website design. By the end of the book you will have built a complete custom content managed website, and be ready to build any kind of website

The effect of indomethacin on glomerular permeability in the nephrotic syndrome

Contains fulltext : mmubn000001_246061790.pdf (publisher's version ) (Open Access)Promotor : P. Wijdeveld140 p

Interactief drukvlak

Creation of an interactive thrust surface. Goal is to get a better insight in the mechanical behaviour of shells.Building TechnologyArchitectur

System-on-Chip Data Processing and Data Handling Spaceflight Electronics

This paper presents a methodology and a tool set which implements automated generation of moderate-size blocks of customized intellectual property (IP), thus effectively reusing prior work and minimizing the labor intensive, error-prone parts of the design process. Customization of components allows for optimization for smaller area and lower power consumption, which is an important factor given the limitations of resources available in radiation-hardened devices. The effects of variations in HDL coding style on the efficiency of synthesized code for various commercial synthesis tools are also discussed

Pneumocystis carinii pneumonia in renal transplant recipients.

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