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1000 tulosta hakusanalla Mark D. Jacobs

Performance-Based Gear Metrology

Performance-Based Gear Metrology

William D. Mark

Wiley-Blackwell
2012
sidottu
A mathematically rigorous explanation of how manufacturing deviations and damage on the working surfaces of gear teeth cause transmission-error contributions to vibration excitations Some gear-tooth working-surface manufacturing deviations of significant amplitude cause negligible vibration excitation and noise, yet others of minuscule amplitude are a source of significant vibration excitation and noise. Presently available computer-numerically-controlled dedicated gear metrology equipment can measure such error patterns on a gear in a few hours in sufficient detail to enable accurate computation and diagnosis of the resultant transmission-error vibration excitation. How to efficiently measure such working-surface deviations, compute from these measurements the resultant transmission-error vibration excitation, and diagnose the manufacturing source of the deviations, is the subject of this book. Use of the technology in this book will allow quality spot checks to be made on gears being manufactured in a production run, to avoid undesirable vibration or noise excitation by the manufactured gears. Furthermore, those working in academia and industry needing a full mathematical understanding of the relationships between tooth working-surface deviations and the vibration excitations caused by these deviations will find the book indispensable for applications pertaining to both gear-quality and gear-health monitoring. Key features: Provides a very efficient method for measuring parallel-axis helical or spur gears in sufficient detail to enable accurate computation of transmission-error contributions from working-surface deviations, and algorithms required to carry out these computations, including examplesProvides algorithms for computing the working-surface deviations causing any user-identified tone, such as ‘ghost tones,’ or ‘sidebands’ of the tooth-meshing harmonics, enabling diagnosis of their manufacturing causes, including examplesProvides explanations of all harmonics observed in gear-caused vibration and noise spectra.Enables generation of three-dimensional displays and detailed numerical descriptions of all measured and computed working-surface deviations, including examples
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Comparing Access SQL and Oracle SQL

Comparing Access SQL and Oracle SQL

Mark Laurent Ph. D

Lulu.com
2017
nidottu
This book is a comparison of ACCESS SQL and ORACLE SQL. The similarities between the two allow students of ACCESS to understand and create ORACLE SQL. This book is intended to help individuals progress from using Access to using and understanding ORACLE.
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Differential Equations with MATLAB

Differential Equations with MATLAB

Mark McKibben; Micah D. Webster

CRC Press Inc
2014
sidottu
A unique textbook for an undergraduate course on mathematical modeling, Differential Equations with MATLAB: Exploration, Applications, and Theory provides students with an understanding of the practical and theoretical aspects of mathematical models involving ordinary and partial differential equations (ODEs and PDEs). The text presents a unifying picture inherent to the study and analysis of more than 20 distinct models spanning disciplines such as physics, engineering, and finance.The first part of the book presents systems of linear ODEs. The text develops mathematical models from ten disparate fields, including pharmacokinetics, chemistry, classical mechanics, neural networks, physiology, and electrical circuits. Focusing on linear PDEs, the second part covers PDEs that arise in the mathematical modeling of phenomena in ten other areas, including heat conduction, wave propagation, fluid flow through fissured rocks, pattern formation, and financial mathematics.The authors engage students by posing questions of all types throughout, including verifying details, proving conjectures of actual results, analyzing broad strokes that occur within the development of the theory, and applying the theory to specific models. The authors’ accessible style encourages students to actively work through the material and answer these questions. In addition, the extensive use of MATLAB® GUIs allows students to discover patterns and make conjectures.
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Piety, Politics, and Power

Piety, Politics, and Power

David D Grafton; Mark Thomsen

Pickwick Publications
2009
sidottu
From the time of Martin Luther's writing of "On War Against the Turk" in 1529 to American Lutheran military chaplains serving in the U.S.-led invasion of Iraq in 2003, Lutheranism has had a symbiotic relationship with Islam in the Middle East, framed across cultural and religious borders. There have been those who have crossed these "borders" to engage in mission and dialogue. In Piety, Politics, and Power, David Grafton examines the origins of the American Lutheran missionary movement in the Middle East, with a focus on its encounter with Muslims and the varied Lutheran theological responses toward Islam. The narrative is placed within historical contexts to provide an overarching background of Middle Eastern history and Christian-Muslim Relations. The survey covers Lutheran missionary communities in Persia, Iraq, Egypt, Lebanon, and Jerusalem and the West Bank, including the work of the Lutherans working for the American Board of Commissioners for Foreign Missionaries, the Anglican Church Missionary Society, the Lutheran Orient Mission, the Lutheran Church-Missouri Synod, and the Evangelical Lutheran Church in America. Whether enthusiastic Pietists seeking the conversion of Muslims and Jews; cautious theologians in dialogue with Islam, Judaism, or Oriental Orthodoxy; or social activists working on behalf of refugees in Egypt and the West Bank, Grafton argues that these Christian missionaries were all enmeshed in the politics of the communities in which they lived, and either contributed to or suffered from the realities of Middle Eastern and international politics. Given the current reality of "Pax Americana" in the Middle East, the author asks the driving question about the role of American Lutheran missions and Lutheran-Middle Eastern Muslim dialogue in the age of American power in the Middle East.
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