Beyond and beneath the hierarchical market economy: global production and working-class conflict in Argentina's automobile industry

This paper argues that the hierarchical market economy (HME) category does not provide an adequate starting point for addressing capitalist diversity in Latin America. Building from a critical perspective on the global commodity chain (GCC) and global production network (GPN) approaches, it instead considers the impact of firms’ transnational relations and the often neglected role of working-class struggles. It will argue that capitalist diversity can only be understood at the nexus of these ostensibly global and local phenomena; and by specifying the strategic decisions taken by firms in Argentina’s automobile industry, it will account for the failure of that sector. Finally, it examines the role of working-class struggles in the industry in Córdoba, Argentina, arguing that these were vital in shaping the specific and unstable form of capitalist diversity in Argentina, as well as potential alternatives to it

Application of High-precision Timing Systems to Distributed Survey Systems

In any hydrographic survey system that consists of more than one computer, one of the most difficult integration problems is to ensure that all components maintain a coherent sense of time. Since virtually all modern survey systems are of this type, timekeeping and synchronized timestamping of data as it is created is of significant concern. This paper describes a method for resolving this problem based on the IEEE 1588 Precise Time Protocol (PTP) implemented by hardware devices, layered with some custom software called the Software Grandmaster (SWGM) algorithm. This combination of hardware and software maintains a coherent sense of time between multiple ethernet-connected computers, on the order of 100 ns (rms) in the best case, of the timebase established by the local GPS-receiver clock. We illustrate the performance of this techniques in a practical survey system using a Reson 7P sonar processor connected to a Reson 7125 Multibeam Echosounder (MBES), integrated with an Applanix POS/MV 320 V4 and a conventional data capture computer. Using the timing capabilities of the PTP hardware implementations, we show that the timepieces achieve mean (hardware based) synchronization and timestamping within 100-150 ns (rms), and that the data created at the Reson 7P without hardware timestamps has a latency variability of 28 µs (rms) due to software constraints within the capture system. This compares to 288 ms (rms) using Reson’s standard hybrid hardware/software solution, and 13.6 ms (rms) using a conventional single-oscillator timestamping model

Parental Alcohol Use Disorders and Child Delinquency: The Mediating Effects of Executive Functioning and Chronic Family Stress

Objective: This study examines the relationship between parental alcohol use disorders (AUDs) and child violent and nonviolent delinquency. It also explores the mediating effects of executive functioning and chronic family stress on the parental AUD/child delinquency relationship. Method: Participants were 816 families with children (414 boys and 402 girls) born between 1981 and 1984 at Mater Misericordiae Mother's Hospital in Brisbane, Australia. Parents and children completed semistructured interviews, questionnaires and neuropsychological tests that assessed parental alcohol use, family psychiatric history, chronic family stress, child delinquency and child executive functioning. Results: Paternal (but not maternal) AUDs predicted child violent and nonviolent delinquency. Executive functioning mediated the relationship between paternal AUDs and violent delinquency, whereas family stress mediated the relationship between paternal AUDs and both violent and nonviolent delinquency. Conclusions: Results support a biosocial conceptualization of the paternal AUD/delinquency relationship. They suggest that paternal AUDs may be associated with child executive functioning and Family stress, which may in turn lead to child delinquency

Simplified simulation models for control studies of turbojet engines

The essential dynamical characteristics of a simple single spool turbojet engine were determined through simulation of low order system models on an analog computer. An accurate model was studied and system complexity was reduced through various linearizations and approximations. A derivation of a seventh order simplified simulation model is presented with a derivation of an even simpler third order model, and simulation results from each. The control problem studied is one of getting from zero fuel flow equilibrium to a high thrust equilibrium while taking into account surge margin and turbine inlet temperature constraints

Cryogenic propellant venting under low pressure conditions final report

Cryogenic propellant venting under low pressure conditions - heat-transfer coefficients for two- phase, single component, solid-gas mixture flow in short, vertical tub

Protocol for a national monthly survey of alcohol use in England with 6-month follow-up: 'The Alcohol Toolkit Study'.

Timely tracking of national patterns of alcohol consumption is needed to inform and evaluate strategies and policies aimed at reducing alcohol-related harm. Between 2014 until at least 2017, the Alcohol Toolkit Study (ATS) will provide such tracking data and link these with policy changes and campaigns. By virtue of its connection with the 'Smoking Toolkit Study' (STS), links will also be examined between alcohol and smoking-related behaviour

High-Precision, High-Accuracy Timekeeping in Distributed Survey Systems

Accurate and precise timekeeping between computers in a distributed survey system is essential to ensure adequate data quality, especially with Multibeam Echosounders (MBES) which can otherwise suffer from significant motion artefacts. We show that clock synchronisation on the order of 100-150ns (rms) is readily achievable in a modern MBES-based survey system utilising an Ethernet-based time synchronisation mechanism and some custom timekeeping software. We also show that improving the timekeeping eliminates motion artefacts in the observed bathymetry, and simplifies the patch-test procedure.Para asegurar una calidad adecuada de los datos es esencial una exacta y precisa mantencion de la hora entre ordenadores en un sistema de levantamiento distribuido, especialmente con Sondadores Acusticos Multihaz (MBES), que sino pueden experimentar las consecuencias de un significativo movimiento de sus artefactos. Mostramos que la sincronizaci6n de un reloj en el orden de 100-150ns (rms) puede llevarse a cabo facilmente en un sistema moderno de levantamientos efectuados mediante MBES, utilizando un mecanismo Ethernet basado en la sincronizacion del tiempo y en algun programa de mantencion de la hora adaptado. Tambien mostramos que mejorando la mantencion de la hora se elimina el movimiento de los artefactos en la batimetria observada, y simplifica el procedimiento de pruebas en parches.Il est essentiel d'avoir un chronometrage exact et precis entre ordinateurs dans un systeme integre pour les leves hydrographiques afin d'assurer une qualite des donnees appropriee notamment pour les sondeurs multifaisceaux (MBES) qui, dans le cas contraire, peuvent patir de perturbations significatives liees au mouvement. Nous montrons qu'une synchronisation des horloges de l'ordre de 100 a 150ns (valeur quadratique moyenne) est facilement obtenue dans un systeme de leves moderne reposant sur les MBES et utilisant un mecanisme de synchronisation du temps dans un reseau Ethernet et un logiciel specifique de chronometrage. Nous demontrons egalement que l'amelioration du chronometrage permet de supprimer certaines perturbations liees au mouvement dans la bathymetrie observee et de simplifier la procedure d'essai par plage