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Free Download Dynamics of Machines and Hydraulic Systems: Mechanical Vibrations and Pressure Pulsations (Synthesis Lectures on Mechanical Engineering) by Michał Stosiak
English | 2024 | ISBN: 3031555244 | 305 pages | MOBI | 26 Mb
The subject of this book is to examine the influence of mechanical vibration on the changes in the pressure pulsation spectrum of hydraulic systems. In book shows that machines and equipment equipped with hydraulic systems are a source of vibration with a wide frequency spectrum. Additionally, hydraulic valves are also exposed to vibration. Vibrations of the substrate on which the hydraulic valve is installed force the control element of the hydraulic valve to vibrate. The control element's vibration produced in this way causes changes in the pressure pulsation spectrum of the hydraulic system. A friction model modified using mixed friction theory can be used for the oscillating motion of the hydraulic directional control spool. Passive vibration isolation methods are proposed to reduce valve vibration. The biomimetic approach can be implemented in hydraulic systems (for pipelines) to reduce mechanical vibration and fluid pulsation. Numerical methods are employed to analyze the effectof changes in the pressure pulsation spectrum on the hydraulic efficiency of the pipelines. Examples are provided for the implementation of numerical methods in the calculation of hydraulic components and systems. Additionally, the effects of energy-saving in hydraulic systems by applying the proposed results overview in the current book. The current book will be interesting for both-scientific and manufacturing staff, since the implementation of knowledge can help to design more substantiable construction of machine hydraulic systems to avoid vibration problems.

Free Download Dynamic Travel Choice Models: A Variational Inequality Approach By Professor Huey-Kuo Chen (auth.)
1999 | 320 Pages | ISBN: 3642642071 | PDF | 15 MB
This book is the result of several years of research into the modeling and algorithm of problems in dynamic travel choice and related areas. Three types of discrete time dynamic travel choice models, along with numerical examples, are presented, i.e., deterministic, stochastic and fuzzy models. The notable features pertaining to these models are as follows: 1. The asymmetric property of the dynamic link travel time function is clearly verified, which leads to a variational inequality formulation. 2. The flow propagation constraint is implicitly defined in our model through the incidence relationship between the link inflow and route flow. 3. The inflow, exit flow, and number of vehicles on a link are identified as the three different states over time for the same vehicles under the flow propagation process. Therefore, only one link variable needs to be used in our dynamic travel choice models. This treatment can largely simplify the models' complexity, and possibly reduce the computation time. 4. The developed time-space network is consistent with scaling units both in temporal and spatial dimensions. 5. The proposed nested diagonalization method takes care of two types of link interactions, i.e., actual link travel times, and inflows other than that on the subject time-space link. 6. The equivalence analysis between a dynamic travel choice model and its corresponding equilibrium condition is performed by proving both the necessary and sufficient conditions under the presumption of equilibrated actual travel times.

Free Download Drug Design and Discovery: Inhibitors of Mitogen-Activated Protein Kinases
English | 2024 | ISBN: 3031756819 | 214 Pages | PDF EPUB (True) | 20 MB
This book covers the important role small molecules can play in the modulation of stress-activated protein kinase (SAPK), also called the mitogen-activated protein kinase (MAPK) pathway, and the potential this may offer in enabling the development of future medicine therapies. It is clear that MAP kinase pathway therapies could continue to drive increasing interest in the field, both within academic laboratories and also in the biotechnology and pharmaceutical sectors. This book provides an overview of protein kinase inhibitors, the biological roles of MAP kinases, ATP-competitive and non-competitive inhibitors, covalent inhibitors, and more. This book is intended for professors in academia, researchers in pharmaceutical and biotechnology sectors working on protein kinases, and graduate students in pharmacy/chemistry.

Read More: Drood

Free Download Driving Value with Sprint Goals: Humble Plans, Exceptional Results (Addison-Wesley Signature Series (Cohn)) by Maarten Dalmijn
English | July 27, 2023 | ISBN: 0137381921 | 256 pages | MOBI | 2.87 Mb
Leverage Sprint Goals to Supercharge Teamwork and Build Winning Products

Free Download Jim Leggitt, "Drawing Shortcuts: Developing Quick Drawing Skills Using Today's Technology Ed 2"
English | ISBN: 0470435488 | 2009 | 272 pages | PDF | 74 MB
The updated edition of a contemporary approach to merging traditional hand drawing methods with 2-dimensional and 3-dimensional digital visualization tools.

Free Download Jill Winch, "Drawing Flowers: Create Beautiful Artwork with this Step-by-Step Guide"
English | ISBN: 1782126252 | 2014 | 128 pages | PDF | 20 MB
Graceful, beautiful and subtle, flowers are among the most delightful of subjects for artists to draw. This fresh, accessible book is aimed at those who want to translate their love of the natural world into vivid, accurate illustrations. Drawing Flowers is packed with examples and exercises across the full floral range, from simple structures, such as tulips, to more complex configurations, such as sunflowers, and compositions involving groups of flowers.

Free Download Daniela Aidley, "Doing Accessible Social Research: A Practical Guide"
English | ISBN: 1447351088 | 2021 | 208 pages | PDF | 1445 KB
Nearly 20% of the population has a disability. Despite this, mainstream research often does not explicitly address the methodological and practical issues that can act as barriers to disabled people's participation in social research. In this book, Aidley and Fearon provide a concise, practical introduction to making it easier for everyone to take part in your research. Requiring no prior knowledge about accessible research methods, the book: * Explains how removing barriers to participation improves the quality of your research; * Covers the research process from design, to collecting data, to dissemination and publication; * Includes checklists and further readings, as well as useful examples and vignettes to illustrate how issues play out in practice. This book will be invaluable to researchers from a variety of backgrounds looking to increase participation in their research, whether postgraduate students, experienced academic researchers, or practitioners and professionals.

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Dl4All is download free for all software and educational resource. With a little searching, you can download what you need for free without spending any money.

Dl4All - Download free For All: software and educational resource.

Développer des applications avec GPT–4 et ChatGPT

Dynamics of Machines and Hydraulic Systems Mechanical Vibrations and Pressure Pulsations

Dynamic Travel Choice Models A Variational Inequality Approach

Drug Design and Discovery

Drood

Driving Value with Sprint Goals Humble Plans, Exceptional Results (Addison–Wesley Signature Series (Cohn))

Drawing Shortcuts Developing Quick Drawing Skills Using Today's Technology Ed 2

Drawing Flowers Create Beautiful Artwork with this Step–by–Step Guide

Drama Drives Interest The Web Summit Story

Doing Accessible Social Research A Practical Guide