Vehicle Accident Analysis and Reconstruction Methods

In this third edition of Vehicle Accident Analysis & Reconstruction Methods, Raymond M. Brach and R. Matthew Brach have expanded and updated their essential work for professionals in the field of accident reconstruction. Most accidents can be reconstructed effectively using of calculations and investigative and experimental data: the authors present the latest scientific, engineering, and mathematical reconstruction methods, providing a firm scientific foundation for practitioners. Accidents that cannot be reconstructed using the methods in this book are rare. In recent decades, the field of crash reconstruction has been transformed through the use of technology. The advent of event data records (EDRs) on vehicles signaled the era of modern crash reconstruction, which utilizes the same physical evidence that was previously available as well as electronic data that are measured/captured before, during, and after the collision. There is increased demand for more professional and accurate reconstruction as more crash data is available from vehicle sensors. The third edition of this essential work includes a new chapter on the use of EDRs as well as examples using EDR data in accident reconstruction. Early chapters feature foundational material that is necessary for the understanding of vehicle collisions and vehicle motion; later chapters present applications of the methods and include example reconstructions. As a result, Vehicle Accident Analysis & Reconstruction Methods remains the definitive resource in accident reconstruction.

Fracture toughness and fractographic investigation of polybutylene terephthalate/thermoplastic polyurethane binary blends reinforced by multi-walled carbon nanotubes using essential work of fracture approach

In this paper, fracture toughness evaluation of polybutylene terephthalate (PBT)/thermoplastic polyurethane (TPU) binary blends and PBT/TPU/carbon nanotubes (CNTs) ternary nanocomposites have been conducted using both Izod impact and quasi-static fracture tests. Essential work of fracture (EWF) approach is used to study the fracture properties in details. The results of EWF tests revealed an effective role of TPU and CNTs in toughening mechanism of binary blends and ternary nanocomposites. According to EWF results, both the crack resistance and plastic deformation energies promoted in all compounds as compared to neat PBT. Energy dissipation in the yielding and tearing stages determined by the energy partitioning method. The obtained results indicated that displacement up to the failure point increased by increasing the TPU content, while inclusion of CNTs reduced this quantity. The specific non-essential work of fracture [Formula: see text] , [Formula: see text], and [Formula: see text] increased with increasing the TPU contents which is confirmed by load-displacement curves. Whereas, addition of CNTs reduced [Formula: see text] and [Formula: see text] values as compared to reference binary blend, however, ternary nanocomposites still have higher values as compared to pure PBT. In contrast with EWF results, high strain rate of impact test prevents the activation of toughness improving mechanisms that readily occurs in quasi-static loading.

AI and essential labor

With the onset of the COVID-19 pandemic in the United States, "essential work" became a calling card for the labor that kept the country running. But the activity of essential workers often occurs out of sight. For example, the products of waste workers are everywhere---clean floors, sanitized tables, objects made from recycled plastics---though workers themselves are often behind the scenes.

Cultural heroism: Mihail Manoilescu. On the work of Pantelimon, Cristi, Mihail Manoilescu. Corporate doctrine. Oscar Print, Bucharest, 2021

Dr. Pantelimon's book is a witness to our times: it refers to an essential work at a critical moment. Dr. Pantelimon provides us with an almost complete synthesis of the omnia work of the great economist, sociologist, publicist, engineer, and politician, finally, the great Romanian, Mihail Manoilescu. Why is the work in question so important? Because it is a reality management technique, without which we will not be able to make the leap from the orbit of underdevelopment to that of development. The study is focused on the chapter structure as well the metastructure of the book – the main ideas and concepts of the overall Manoilescu’s work. We shall discuss on protectionism, corporatism, autarchy, orthodoxy and corporatism etc.

A Method of Automated Work Observation for Ship Production Using Deep Neural Networks

It is important to increase the productivity of every shipyard. Visualizing the actual work status during any industrial activity is essential. Work observation as one of the methods of industrial engineering has been applied in various fields in shipyards in Japan to increase productivity. However, current work observation requires both time and labor, and in some cases, shipyards hesitate to implement work observation. The aim of this study is to develop a methodology that uses deep neural networks to reduce the disadvantages of current work observation approaches while identifying work tasks and the accuracy of this observation.

Essential Work in the U.S. during COVID-19: Navigating Vulnerability–Sustainability Tensions

The COVID-19 pandemic affected every functioning system in the United States. Workers deemed “essential” faced multiple threats to their well-being that quickly led to acute symptoms of anxiety, depression, burnout, and overall exhaustion, and organizations were challenged to devise employee protocols to maintain sustainability. This qualitative study takes a tension-centered approach to discern how “essential workers” in the United States navigated this tenuous work landscape, particularly with regard to emotional work and workplace dignity. We conducted 19 semi-structured in-depth interviews with essential workers during COVID-19. Our constant comparative analysis of the data identified a macro-tension between vulnerability and sustainability that was revealed through two micro-tensions: (a) essential work as instrumental and disposable, and (b) workplace dignity as recognized and transgressed. We unpack the emotional responses enmeshed in these micro-tensions and situate our findings at the intersection of organizational sustainability, emotional work and workplace dignity. We offer theoretical and practical implications for essential workers and organizations.

The Essential Work of Crip Resistance: Demanding Dignity in Spain's Pandemic Austerity

This article considers crip resistance to the politics of austerity with which Spain's government has reacted to the COVID-19 pandemic, roughly a decade after the 15-M anti-austerity movement and its occupations. Given the intensification of austerity politics and their effects on people with disabilities, I examine three instances of crip resistance and their virtual, local, and global settings. Beyond McRuer's expansive view of crip resistance as comprised of tactics that center disability against global austerity, my analysis establishes its groundwork in the current demands by Spanish disability advocacy groups and on Javier Romañach's modelo de diversidad funcional, the prevalent model of disability among Spanish disability activists that centers the concept of dignity. Throughout this analysis, I demonstrate how crip tactics that emerge in a crisis can help make sense of a continuing emergency as they challenge the existing conditions of cultural austerity and contribute to the concept of dignity as an organizing principle.