9 research outputs found
Honour and recognition in the German novel of banditry ca 1800
No full textThis article performs a reading informed by Honneth’s theory of recognition of the two best-known German novels of banditry of the 1790s, Johann Heinrich Zschokke’s Abaellino der große Bandit (1794) and Christian August Vulpius’ Rinaldo Rinaldini (1799) in an effort to understand how popular literature participates in and reflects upon the discourse on honour and recognition around 1800. Its status as popular genre makes the novel of banditry (Räuberroman) a potentially interesting source on shifts in the theory and practice of honour as experienced by ordinary Europeans at the turn of the 19th century. The genre was found to relate to the honour discourse not directly, but in the manner of a heterotopia, simultaneously located outside that discourse and referentially connected to it. Taken in isolation, the novel of banditry is not an informative source on the changing role of honour and new patterns of intersubjective recognition in late 18th century Europe. Seen as part of a particular constellation of textual production and reception, however, the genre sheds light on the aporias of honour experienced by those socially marginal ‘new readers’ intent on exploiting literature in the struggle for enhanced social recognition.Peer reviewe
Work-life reconciliation: which organizational options?
No full textLa conciliazione vita-lavoro è uno dei temi più attuali nel dibattito politico e accademico. Questo articolo dapprima descrive l’evoluzione del concetto di conciliazione vita-lavoro attraverso una rivisitazione interdisciplinare della letteratura. In seguito propone una sintesi delle riflessioni e delle pratiche organizzative e manageriali; una interpretazione critica della letteratura di mainstream, e dei risultati controversi riscontrabili nelle pratiche di conciliazione vita-lavoro, conduce alla presentazione di una ipotesi di lavoro che si basa sulla proposta formulata da Masino e Zamarian riguardante l’introduzione di artefatti tecnici nel processo organizzativo. E’ quindi proposto uno schema di analisi delle pratiche di conciliazione fondato su categorie concernenti (possibili) scelte di progettazione, adozione e uso, nell’intento di fornire un contributo alla contrattazione di secondo livello.
Parole chiave: Conciliazione vita-lavoro, Agire organizzativo, Progettazione organizzativa, Gestione delle risorse uman
Numerical optimization of supercharging and combustion on a two-stroke compression ignition aircraft engine
No full textTwo-Stroke (2S) Compression Ignition (CI) engines have been used in aviation since World War II, for their excellent fuel efficiency and lightweight construction. In a modern light aircraft, these advantages still remain, along with the capability to run on jet fuel instead of gasoline. However, the design of these engines must be deeply revised, in order to incorporate the recent technologies, and it must be optimized with the support of CAE tools. The paper presents a CFD optimization of a turbocharged 2S CI 5.6 L flat-six aircraft engine developed by CMD. The scavenging system is of the Uniflow type, with exhaust poppet valves and a set of piston-controlled ports along the cylinder liner. Two mechanical superchargers are serially connected to the turbochargers. The crankshaft can be directly coupled to the propeller, thanks to its excellent balance and the relatively low maximum engine speed (2600 rpm). Differently from previous papers published on the same engine, the current study is focused on two crucial design topics: the optimization of the supercharging system and of the injection strategy. A customized version of KIVA-3V is used for the 3D-CFD cylinder analyses, while a commercial 1D-CFD code is employed to model the whole engine. The study is supported by a comprehensive experimental campaign, that permitted the accurate calibration of the numerical models. In comparison to any Four-Stroke delivering the same maximum power (400 HP at 2600 rpm, sea level), the analyzed engine is very light (about 220 kg), and efficient (211 g/kWh at typical cruise conditions). Despite the high performance, peak cylinder pressure and turbine inlet temperature at sea level are relatively low: 125 bar, 850 K. At rated power (360 HP@2400 rpm, sea level) combustion is complete and smoke-less, thanks to the optimization of the injection strategy, supported by the previous CFD analysis. The engine can operate at altitudes as high as 5500 m (18,000 feet), still delivering 270 HP at 2400 rpm, without relevant reduction of fuel efficiency. The key for the performance at high altitudes is the choice of the turbocharger considering the compressor choke limit easly reachable at high altitudes
Effect of tinplated scraps surface-to-volume ratio on the efficiency of the electrolytic detinning process
No full textRecycling of steel scrap is a more competitive practice than steelmaking from iron ores. However, the presence of tramp elements within steel scrap affects the quality of the new steel produced. Tinplating of cans for drinks and food contains a high quantity of tin, which is responsible for adverse phenomena such as surface hot shortness and temper embrittlement. Thus, the development and application of a detinning process is necessary. This investigation focuses on studying an electrolytic detinning process performed in a 2.5M NaOH solution to decrease the tin content in tin-plated scrap. The process's performance was evaluated by varying input variables such as the process time, the applied current density, the operating temperature, and the material size (surface to volume ratio, S/V). The best process time for electrolytic de-tinning was estimated. The effect of the applied current density and S/V ratio on the process time and on the energy consumed by the process was evaluated at both room temperature and at 70 degrees C. The results showed that the tin content in tinned plates can be reduced to a negligible level (<0.01 wt-%) at 70 degrees C and the efficiency of de-tinning tin-plated scrap proved to increase with the S/V ratio
Questioni di giustizia
No full textThis book collects contributions on questions of justice. It proposes a reflection on justice observed from different disciplinary perspectives (organization, philosophy, labor law, economics, work psychology) concerning the basic assumptions underlying the research approaches on this topic. Then, the book considers justice in relation to different issues that are widely debated in the social arena (corporate governance, organizational design, well-being, digitalization of work processes, smart working). A critical point of view on the different positions is adopted. We believe that recognizing the specificities of single disciplines and their defining and applicative problems is a fundamental premise in order to face the new challenges that a subject as ancient as justice seems to bring to the forefront of today’s society
Effect of nanofluids on Heat transfer enhancement in automotive cooling circuits
No full textContinuous technological development in automotive industries has increased the demand for high efficiency engines. Optimizing design and size of a radiator in order to reduce a vehicle weight is a requirement for making the world green. Using of fins is one of the techniques to increase the cooling rate of the radiator. However, traditional approach of enhancing the cooling rate by using fins and microchannels has already showed to their limit. Furthermore, heat transfer fluids such as water and ethylene glycol have very low thermal conductivity. As result there is an urgency for new and innovative heat transfer fluids for increasing heat transfer rate in an automotive cooling circuit. Nanofluids represent potential substitute of conventional coolants in engine cooling system. In this paper a cooling circuit is modelled in TRNSYS (version 17) and investigated in transient regime. The circuit is composed by a heating system, a pump and a heat exchanger. The heat exchanger represents a car radiator in the circuit. The nanofluid is a mixture of water and Al2O3 nanoparticles. The study is conducted for three different engine operating conditions (Low, Medium and High) and different volume concentrations of nanoparticles. © 2019 Author(s)
Work as a process of personal development / Il lavoro come processo di sviluppo personale
No full textThis volume introduces a conception of work as a process of personal growth and development. Three fundamental moments of passage are discussed, in which the life and work connection becomes evident: the transition from education to work, the daily relationship between work and extra-work life, the evaluations in the workplace upon which the career paths depend. Critical reflections about mainstream theories, methodologies and practices are suggested. Examples and case studies illustrate their limitations and negative consequences. Finally, alternative organizational choices aimed at improving the work situations and facilitating, in the workplace, the development and well-being of people, are proposed
Temps de travail et régulation sociale / Tempo di lavoro e regolazione sociale
No full textJens Thoemmes’ research about working time negotiations and his theory on social regulation were discussed in a TAO Research Programs seminar that took place in November 2014, at the University of Milano. This publication includes the invited author’s introductory conference, the comments of participating researchers about Thoemmes’ research and theory, and his replies.
Autonomie nel lavoro negli anni Duemila
No full textAutonomy at work has been defined in many ways, but not all conceptualizations have the same coherence and heuristic efficacy. This book follows the literature that interprets autonomy, according to its etymological meaning, as the ability to produce one’s own rules and, therefore, to govern one’s own processes of action. In relation to autonomy, the recent rise of freelancers and independent workers, the diffusion of coworking, the organizational choices of work in the gig economy, the use of advanced technologies, and proactivity at work are explored and discussed
