Shock and Vibration from an Acoustical Viewpoint

Vibration, Mechanical Shock, and Impact

Time-varying forces and accelerations occur in daily life, and are commonly experienced, for example, in an elevator and in aircraft, railway trains, and automobiles. All of these situations involve motion of the whole body transmitted through a seat, or from the floor in the case of a standing person, where the human response is commonly related to the relative motion of body parts, organs, an...

Computer Shock and Vibration Concerns

INTRODUCTION Digital microcomputers are ubiquitous. Computers inside the space shuttle control its descent from orbit until it slows to Mach 1, the speed of sound. At this time, the pilots gradually take over control and prepare for landing. Computers inside satellites provide a myriad of functions. For example, a satellite computer might record sensor data for later transmission to Earth groun...

Learning From An Optimization Viewpoint

Optimization has always played a central role in machine learning and advances in the field of optimization and mathematical programming have greatly influenced machine learning models. However the connection between optimization and learning is much deeper : one can phrase statistical and online learning problems directly as corresponding optimization problems. In this dissertation I take this...

The Permissibility of Women’s Social Presence from an Islamic Viewpoint

This article tries to demonstrate that Islam recognizes women’s social presence and endorses their participation in political, economic, and cultural activities in society. The claim is supported by the Quranic reports of women’s social activities in the past nations and by a number of jurisprudential verses (āyāt al-aḥkām) pertaining to social matters. Further evidence for th...

Some Applications of Semidefinite Optimization from an Operations Research Viewpoint