Retorica postfordista e residualità del lavoro

Il contributo riflette sulla retorica del post-fordismo che scaturisce dall’analisi dei casi de “L’Officina di Organizzazione”, una retorica che conserva inalterati i suoi presupposti funzionalisti indipendentemente dalla varietà di valutazioni del cambiamento diffuse nella letteratura dominante, e vede nella posizione residuale in cui è stato collocato il lavoro l’aspetto preminente del processo di cambiamento delle imprese

Rappresentanza e contrattazione del tempo di lavoro

Il contributo si interroga sull’attività di rappresentanza sindacale: essa è evidentemente necessaria per la contrattazione, ma può essere considerata come lavoro d’organizzazione, inteso secondo le teorie di Terssac e di Thoemmes? Si interroga inoltre sulle possibilità di spostare il focus dell’analisi, dai contratti sul tempo di lavoro ai processi di negoziazione che producono tali accordi.Matteo Rinaldini s’interroge sur l’activité de représentation syndicale : elle est évidemment nécessaire pour la négociation mais peut-on la considérer comme un travail d’organisation, suivant les théories de Terssac et de Thoemmes ? Il s’interroge, en outre, sur les possibilités de déplacer la focale de l’analyse, des accords sur le temps de travail aux processus de négociation qui produisent ces accords

Un cambio di prospettiva sulla conciliazione vita lavoro: dall’implementazione dei servizi aziendali alla gestione del tempo. Una ricerca sulle piccole e medie imprese di Reggio Emilia

Work-life reconciliation is one of the current issues within the political and academic debate. This article describes at first the evolution of the concept of work-life reconciliation through an interdisciplinary review of the literature. Second, the article proposes a synthesis of organizational and business reflection and practice; starting from a critical interpretation of mainstream literature and of related controversial results in terms of work-life reconciliation practices, the article goes on to offer a working hypothesis, which takes explicitly into account Thompson’s theoretical framework added to a new one: the territorial work-family culture. The evolution of the concept of reconciliation inevitably leads to consider this fourth dimensions that affects the54 systemic level. Through the collection of 777 questionnaires, the analysis took into consideration the identification of each dimension’s role, roles that contribute to creating an organizational work-family culture, both within the organizations and in the whole territory

Tempo e giustizia nella conciliazione vita-lavoro

Work-life balance is one of the current issues within the academic, political, and managerial debate. An article discussed in a TAO Research Programs seminar held in June 2015 at the University of Modena and Reggio Emilia, suggests a critical interpretation of the mainstream literature and its related controversial results in terms of work-life reconciliation practices. The article also provides an alternative analytical framework based on Bruno Maggi\u2019s organization theory, Norbert Elias\u2019 theory of time, and Amartya Sen\u2019s theory of justice

Overview of Genus Prosopis Toxicity Reports and its Beneficial Biomedical Properties

Secondary plant metabolites are regarded as promising sources of plant-protecting substances and they are one of the most important lines of plant defense against pests. The range of cellular targets for these substances is very wide and covers metabolic pathways, macromolecules and organelles. In consequence, the plant derivatives study represents a critical situation in which toxic effects against other organisms need to be evaluated in relation to its biological benefits. The genus Prosopis (Fabaceae) include 44 species and is considered among the world’s most damaging invasive species. The genus had been found in 129 countries globally and many more countries are climatically suitable. Prosopis physiology evidences a wide range of adaptability, shows the capability to growth in several adverse conditions, accumulates heavy metals and synthetizes chemical defences. Curiously, since antiquity, some Prosopis species around the world were described as important source of ethnopharmacological treatments for several illnesses. Toxicity against prokaryote microorganisms, fungus, parasites, mosquitoes, vertebrate animals and humans is revised in the current work. In accordance to the reviewed literature, it is possible to conclude that more specific research could make Prosopis species an important source of nutraceuticals and phytopharmaceutical compounds. Moreover, by its selective toxic effects, plant derivatives can be used as important source of new and successful bioactive molecules.Fil: Persia, Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Medicina y Biología Experimental de Cuyo; ArgentinaFil: Rinaldini, Estefanía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Medicina y Biología Experimental de Cuyo; ArgentinaFil: Hapon, María Belén. Universidad Nacional de Cuyo. Facultad de Ciencias Médicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Medicina y Biología Experimental de Cuyo; ArgentinaFil: Gamarra Luques, Carlos Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Medicina y Biología Experimental de Cuyo; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Médicas; Argentin

A new design concept for 2-Stroke aircraft Diesel engines

High power density, low weight, compact dimensions, high efficiency as well as reliability are the key factors in designing and dimensioning piston engines for General Aviation and Unmanned Aerial Vehicle (UAV) power plants. Despite of new available technologies, conventional solutions are still struggling to fulfill simultaneously all those requirements. The paper explores the application of a new design of 2-Stroke externally scavenged engines to aircraft. The new concept basically consists in the use of a patented rotary valve for controlling the flow through a set of inlet ports, enabling supercharging and the achievement of extremely high power densities compared to conventional solutions. The scavenging is realized by using an external pump, made up of a further cylinder, whose piston is connected to the same crankshaft. The piston pump allows the crankcase to be used as a conventional oil sump, and greatly improves the crankshaft balance. No poppet valves or camshafts need to be installed, since the flow is driven by piston-controlled ports and by two sets of reed valves. The engine can adopt two types of combustion system: Gasoline Direct Injection (GDI) for SI operations, and Direct Injection Common Rail for Diesel cycle. The paper is focused on the last version, since it can run on standard aircraft fuel. The Diesel engine has three cylinders and three piston pumps, for a total displacement of 1.5 liter The engine is turbocharged and inter-cooled, in order to reach a power target, at sea level, of 150 kW@4000 rpm. Another fundamental target is the minimum power of 100 kW, at the altitude of 20,000 feet. The paper reviews the design of the engine and presents the numerical prediction of the key performance parameters

Combustion analysis of a diesel engine running on different biodiesel blends

Rape-seed biodiesel is an interesting option to address the problem of decreasing availability of conventional fossil fuels, as well as to reduce the CO2 emissions of internal combustion engines. The present paper describes an experimental campaign carried out on a current production 4-cylinder, 4-stroke naturally aspirated diesel engine, running on standard diesel fuel and on three different blends of rape-seed biodiesel (20%-50%-100%). Performance, emissions and in-cylinder pressure traces were measured at full load. It was found that the influence of rape-seed biodiesel in the fuel blend is not constant at each operating condition. However, as the biodiesel content increases, full load performance tends to drop, in particular brake specific fuel consumption (maximum worsening: +18%), while soot emission goes down. The maximum improvement observed in terms of soot concentration is 37.5%, at 1200 rpm. The combustion analysis revealed that the main differences among the fuels occur in the first phase of combustion: the burn rate is slower for biodiesel blends at low speeds, and faster at high