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"... mein Acker ist die Zeit": Aufsätze zur Umweltgeschichte

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ISBN: 9783941875999 Year: Pages: 502 Language: German
Publisher: Universitätsverlag Göttingen
Subject: General and Civil Engineering --- Environmental Sciences --- Science (General)
Added to DOAB on : 2011-11-04 00:00:00
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A collection of papers, articles, and essays written in the past decade by the well-known German environmental historian.

100 Years of Prandtl's Wedge

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ISBN: 9781614998495 9781614998501 Year: Pages: 144 DOI: 10.3233/978-1-61499-850-1-i Language: English
Publisher: IOS Press
Subject: General and Civil Engineering
Added to DOAB on : 2018-06-20 15:09:53
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The biggest problem for a shallow foundation, just as for any other type of foundation, is a failure due to an overestimation of the bearing capacity. This means that the correct prediction of the bearing capacity of the foundation is often the most important part of the design of a civil structure. That is why the publication by Prandtl in 1920 about the hardness of a plastic body, was a major step in solving the bearing capacity of shallow foundations, although it is well possible that he never realised this, because his solution was not made for civil engineering purposes, but for mechanical purposes. Over the last 100 years, a lot of extensions have been made, for example with inclination factors and shape factors. Also many laboratory experiments have been done and numerical calculations have been made. Some even try to extrapolate the failure mechanism for shallow foundations to the failure mechanism around the tip of a pile. All this scientific work leads back to the first publication by Ludwig Prandtl in 1920. This book, “100 Years of Prandtl’s Wedge”, is intended for all those who are interested in these fundamentals of foundation engineering and their history. The Appendices include a copy of Prandtl’s Über die Härte plastischer Körper and of Reissner’s publication of 1924, Zum Erddruckproblem.

Anti-fragile ICT Systems

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Book Series: Simula SpringerBriefs on Computing ISBN: 9783319300689 9783319300702 Year: Volume: 1 Pages: 151 DOI: 10.1007/978-3-319-30070-2 Language: English
Publisher: Springer Grant: Simula Research Laboratory
Subject: General and Civil Engineering --- Electrical and Nuclear Engineering --- Computer Science --- Media and communication --- Transportation --- Manufactures
Added to DOAB on : 2016-04-25 16:55:27
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This book introduces a novel approach to the design and operation of large ICT systems. It views the technical solutions and their stakeholders as complex adaptive systems and argues that traditional risk analyses cannot predict all future incidents with major impacts. To avoid unacceptable events, it is necessary to establish and operate anti-fragile ICT systems that limit the impact of all incidents, and which learn from small-impact incidents how to function increasingly well in changing environments. The book applies four design principles and one operational principle to achieve anti-fragility for different classes of incidents. It discusses how systems can achieve high availability, prevent malware epidemics, and detect anomalies. Analyses of Netflix’s media streaming solution, Norwegian telecom infrastructures, e-government platforms, and Numenta’s anomaly detection software show that cloud computing is essential to achieving anti-fragility for classes of events with negative impacts.

3D Printed Microfluidic Devices

Authors: ---
ISBN: 9783038974673 / 9783038974680 Year: Pages: 211 DOI: 10.3390/books978-3-03897-468-0 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: General and Civil Engineering
Added to DOAB on : 2019-01-10 09:24:00
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3D printing has revolutionized the microfabrication prototyping workflow over the past few years. With the recent improvements in 3D printing technologies, highly complex microfluidic devices can be fabricated via single-step, rapid, and cost-effective protocols as a promising alternative to the time consuming, costly and sophisticated traditional cleanroom fabrication. Microfluidic devices have enabled a wide range of biochemical and clinical applications, such as cancer screening, micro-physiological system engineering, high-throughput drug testing, and point-of-care diagnostics. Using 3D printing fabrication technologies, alteration of the design features is significantly easier than traditional fabrication, enabling agile iterative design and facilitating rapid prototyping. This can make microfluidic technology more accessible to researchers in various fields and accelerates innovation in the field of microfluidics. Accordingly, this Special Issue seeks to showcase research papers, short communications, and review articles that focus on novel methodological developments in 3D printing and its use for various biochemical and biomedical applications.

3D Printing

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ISBN: 9781789239652 9781789239669 Year: Pages: 196 DOI: 10.5772/intechopen.74339 Language: English
Publisher: IntechOpen
Subject: General and Civil Engineering
Added to DOAB on : 2019-10-03 07:51:52

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This book, ""3D Printing"", is divided into two parts: the first part is devoted to the relationship between 3D printing and engineering, and the second part shows the impact of 3D printing on the medical sector in general. There are five sections in the first part (sections are dedicated to stereolithography, new techniques of high-resolution 3D printing, application of 3D printers in architecture and civil engineering, the additive production with the metal components and the management of production by using previously mentioned technology in more complex ways). There are four chapters in the second part with the following topics: education of medical staff through surgical simulations, tissue engineering and potential applications of 3D printing in ophthalmology and orthopedics.

3D Printing with Biomaterials - Towards a Sustainable and Circular Economy

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ISBN: 9781614994855 9781614994862 Year: Pages: 86 DOI: 10.3233/978-1-61499-486-2-i Language: English
Publisher: IOS Press
Subject: General and Civil Engineering --- Materials --- Business and Management --- Environmental Sciences
Added to DOAB on : 2017-02-09 15:07:44
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"Additive manufacturing or 3D printing, manufacturing a product layer by layer, offers large design freedom and faster product development cycles, as well as low startup cost of production, on-demand production and local production. In principle, any product could be made by additive manufacturing. Even food and living organic cells can be printed. We can create, design and manufacture what we want at the location we want. 3D printing will create a revolution in manufacturing, a real paradigm change. 3D printing holds the promise to manufacture with less waste and energy. We can print metals, ceramics, sand, synthetic materials such as plastics, food or living cells. However, the production of plastics is nowadays based on fossil fuels. And that’s where we witness a paradigm change too. The production of these synthetic materials can be based also on biomaterials with biomass as feedstock. A wealth of new and innovative products are emerging when we combine these two paradigm changes: 3D printing and biomaterials. Moreover, the combination of 3D printing with biomaterials holds the promise to realize a truly sustainable and circular economy."

Abbildung demographischer Prozesse in Verkehrsentstehungsmodellen mit Hilfe von Längsschnittdaten

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Book Series: Schriftenreihe / Institut für Verkehrswesen, Karlsruher Institut für Technologie ISSN: 03415503 ISBN: 9783866445550 Year: Volume: 69 Pages: XVI, 144 p. DOI: 10.5445/KSP/1000019587 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: General and Civil Engineering
Added to DOAB on : 2019-07-30 20:02:00
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Eine effiziente und nachhaltige Verkehrsplanung benötigt Vorstellungen, wie die Verkehrsnachfrage in den kommenden Jahrzehnten aussehen wird. Neben der Alterung der Gesellschaft und wirtschaftlichen Entwicklungen sind hier vor allem Kohorteneffekte zu berücksichtigen. Mit Alters- Kohortenmodellen und geeigneten Längsschnittdaten können derartige Effekte analysiert werden. Die Ergebnisse werden hier beispielhaft eingesetzt, um die Verkehrsentstehung in unterschiedlichen Raumtypen vorherzusagen.

Acoustic Emission Technology for High Power Microwave Radar Tubes

Authors: --- --- ---
ISBN: 9781789854558 9781789854565 Year: Pages: 130 DOI: 10.5772/intechopen.72298 Language: English
Publisher: IntechOpen
Subject: General and Civil Engineering
Added to DOAB on : 2019-10-03 07:51:52

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This book is intended for all those professionals with interest in developing a basic background in acoustic emission and its use as a non-destructive testing technique. The monitoring of high-power microwave radar tubes is an example of the use of such techniques. This book will also be of interest to those involved in the design, maintenance and procurement of high-power microwave radar tubes. And finally, it is also intended for those students of physics and engineering interested in specializing in acoustics and acoustic techniques.

Acoustic Waves

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ISBN: 9789533071114 Year: Pages: 478 DOI: 10.5772/277 Language: English
Publisher: IntechOpen
Subject: General and Civil Engineering
Added to DOAB on : 2019-10-03 07:51:48

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SAW devices are widely used in multitude of device concepts mainly in MEMS and communication electronics. As such, SAW based micro sensors, actuators and communication electronic devices are well known applications of SAW technology. For example, SAW based passive micro sensors are capable of measuring physical properties such as temperature, pressure, variation in chemical properties, and SAW based communication devices perform a range of signal processing functions, such as delay lines, filters, resonators, pulse compressors, and convolvers. In recent decades, SAW based low-powered actuators and microfluidic devices have significantly added a new dimension to SAW technology. This book consists of 20 exciting chapters composed by researchers and engineers active in the field of SAW technology, biomedical and other related engineering disciplines. The topics range from basic SAW theory, materials and phenomena to advanced applications such as sensors actuators, and communication systems. As such, in addition to theoretical analysis and numerical modelling such as Finite Element Modelling (FEM) and Finite Difference Methods (FDM) of SAW devices, SAW based actuators and micro motors, and SAW based micro sensors are some of the exciting applications presented in this book. This collection of up-to-date information and research outcomes on SAW technology will be of great interest, not only to all those working in SAW based technology, but also to many more who stand to benefit from an insight into the rich opportunities that this technology has to offer, especially to develop advanced, low-powered biomedical implants and passive communication devices.

Acoustics of Materials

Authors: ---
ISBN: 9781838803490 9781838803506 Year: Pages: 206 DOI: 10.5772/intechopen.75245 Language: English
Publisher: IntechOpen
Subject: General and Civil Engineering
Added to DOAB on : 2019-10-03 07:51:53

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This book deals with acoustic wave interaction with different materials, such as porous materials, crystals, biological tissues, nanofibers, etc. Physical phenomena and mathematical models are described, numerical simulations and theoretical predictions are compared to experimental data, and the results are discussed by evoking new trends and perspectives. Several approaches and applications are developed, including non-linear elasticity, propagation, diffusion, soundscape, environmental acoustics, mechanotransduction, infrasound, acoustic beam, microwave sensors, and insulation. The book is composed of three sections: Control of Sound - Absorbing Materials for Damping of Sound, Sound Propagation in Complex/Porous materials and Nondestructive Testing (NDT), Non Linearity, Leakage.

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