Resistance as Sacrifice: Toward an Ascetic Antiracism

Often described as an outcome, inequality is better understood as a social process—a function of how institutions are structured and reproduced, and the ways people act and interact within them across time. Racialized inequality persists because it is enacted moment to moment, context to context—and it can be ended should those who currently perpetuate it commit themselves to playing a different role instead. This essay makes three core contributions. First, it highlights a disturbing parity between the people who are most rhetorically committed to ending racialized inequality and those who are most responsible for its persistence. Next, it explores the origin of this paradox—how it is that ostensibly antiracist intentions are transmuted into “benevolently racist” actions. Finally, it presents an alternative approach to mitigating racialized inequality, one that more effectively challenges the self‐oriented and extractive logics undergirding systemic racism, rather than expropriating blame to others, or else adopting introspective and psychologized approaches to fundamentally social problems, those sincerely committed to antiracism can take concrete steps in the real world—actions that require no legislation or coercion of naysayers, just a willingness to personally make sacrifices for the sake of racial justice.     

Joint modified block replacement and production/inventory control policy for a failure-prone manufacturing cell

This paper considers a joint preventive maintenance (PM) and production/inventory control policy of an unreliable single machine, mono-product manufacturing cell with stochastic non-negligible corrective and preventive delays. The production/inventory control policy, which is based on the hedging point policy (HPP), consists in building and maintaining a safety stock of finished products in order to respond to demand and to avoid shortages during maintenance actions. Without considering the impact of preventive and corrective actions on the overall performance of the production system, most authors working in the reliability and maintainability domains confirm that the age-based preventive maintenance policy (ARP) outperforms the classical block-replacement policy (BRP). In order to reduce wastage incurred by the classical BRP, we consider a modified block replacement policy (MBRP), which consists in canceling a preventive maintenance action if the time elapsed since the last maintenance action exceeds a specified time threshold. The main objective of this paper is to determine the joint optimal policy that minimizes the overall cost, which is composed of corrective and preventive maintenance costs as well as inventory holding and backlog costs. A simulation model mimicking the dynamic and stochastic behavior of the manufacturing cell, based on more realistic considerations of the real behavior of industrial manufacturing cells, is proposed. Based on simulation results, the joint optimal MBRP/HPP parameters are obtained through a numerical approach that combines design of experiment, analysis of variance and response surface methodologies. The joint optimal MBRP/HPP policy is compared to classical joint ARP/HPP and BRP/HPP optimal policies, and the results show that the proposed MBRP/HPP outperforms the latter. Sensitivity analyses are also carried out in order to confirm the superiority of the proposed MBRP/HPP, and it is observed that for practitioners, the proposed joint MBRP/HPP offers not only cost savings, but is also easy to manage, as compared to the ARP/HPP policy.     

Production planning problem in manufacturing systems with general failure and repair time distributions

We study the optimal flow control for a manufacturing system subject to random failures and repairs. In most previous work, it has been proved that, for constant demand rates and exponential failure and repair times distributions of machines, the hedging point policy is optimal. The aim of this study is to extend the hedging point policy to non-exponential failure and repair times distributions and random demand rates models. The performance measure is the cost related to the inventory and back order penalties. We find that the structure of the hedging point policy can be parametrized by a single factor representing the critical stock level or threshold. With the corresponding hedging point policy, simulation experiments are used to construct input-output data from which an estimation of the incurred cost function is obtained through a regression analysis. The best parameter value of the related hedging point policy is derived from a minimum search of the obtained cost function. The extended hedging point policy is validated and shown to be quite effective. We find that the hedging point policy is also applicable to a wide variety of complex problems (i.e. non-exponential failure and repair times distributions and random demand rates), where analytical solutions may not be easily obtained.     

Business ethics,company value and ownership structure

This paper examines the effect of ethical performance on the value of a company and the attractiveness of its stocks for major owners; institutional investors and insiders. Using the Ethisphere^® Institute Ethics Quotient to distinguish between ethical and unethical companies, results show that good ethical performance enhanced company value for a sample of 240 large US companies. Furthermore, strong evidence is found that institutional investors are attracted to ethical companies, but that insiders do not show any investment preferences based on the ethical performance of a company.

     

Ergonomic evaluation of a situation of coexposure to solvents and noise in a printing of flexible packaging

The purpose of this paper is to present an ergonomic evaluation of a situation of co-exposure to solvents and noise in a flexible packaging printer. We discuss how such an approach carried out in the field of printing industry work has made it possible to highlight serious shortcomings in the effectiveness of the prevention actions that are supposed to protect workers from chemicals risks and noise. The ergonomic analysis identified a strain working conditions. Indeed, some jobs expose to noise and toxic risk. Lamination operations, winding and cutting are purveyors of noise. Some physical and spatial factors contribute to amplify the toxic risk. The not wearing of personal protective equipment (PPE) by the operators maybe explained by the fact that it doesn't any possibility to do "otherwise". Indeed, operators adopt a compromise to achieve the objectives of production to the detriment of their health and safety. These constraints are causing gene and psychosocial factors. The interviews revealed a state of psychosis in the workshop, which was accentuated by the reclassification of an operator which has created a climate of panic and anxiety especially for older operators who have more than 20 years exposed to handling of toxic and more exposure to high noise level.     

Race and the Race for the White House: On Social Research in the Age of Trump

As it became clear that Donald Trump had a real base of political support, even as analysts consistently underestimated his electoral prospects, they grew increasingly fascinated with the question of who was supporting him (and why). However, researchers have also tended to hold strong negative opinions about Trump, and have approached research with uncharitable priors about the kind of person who would support him and what they would be motivated by. This essay presents a series of case studies showing how analyses of the roles of race and racism in the 2016 U.S. Presidential Election seem to have been systematically distorted as a result. However, motivated reasoning, confirmation bias, prejudicial study design, and failure to address confounds are not limited to questions about race (a similar essay could have been done on the alleged role of sexism/ misogyny in the 2016 cycle, for instance). And while Trump does seem to generate particularly powerful antipathy from researchers – perhaps exacerbating negative tendencies – ideologically-driven errors likely permeate a good deal of social research. Presented evidence suggests that research with strong adversarial or advocacy orientations may be most susceptible to systemic distortion. Activist scholars and their causes may also be among those most adversely impacted by the resultant erosion of research reliability and credibility. Ultimately, however, these are problems which all social scientists must remain vigilant against, and which we all have a stake in working to address.