IRIS - UNIRSM (Univ. degli Studi della Repubblica di San Marino)
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Università e Cooperazione Italiana in El Salvador. Un'indagine sui laboratori per la Scuola Inclusiva a Tempo Pieno
No full textNell’ambito del programma di cooperazione internazionale realizzato in ElSalvador, la Cooperazione Italiana e il Dipartimento di Scienze dell’Educazionedell’Università di Bologna stanno sostenendo dal 2009 il Ministerodell’Educazione salvadoregno nello sviluppo della scuola inclusiva a tempopieno. La ricerca sui laboratori presentata in questo contributo è stata effettuataall’interno di un più ampio lavoro di sistematizzazione del modellodella Scuola Inclusiva a Tempo Pieno (EITP) svolto nel secondo semestre del2016 in loco. L’osservazione e lo studio dei laboratori avviati in 40 scuole pilotafanno emergere un quadro piuttosto complesso; il ruolo dei laboratori apparesignificativo, sia sul piano quantitativo sia su quello qualitativo, sebbeneessi presentino livelli di sviluppo differenti e diverse siano l’interpretazionee la valutazione delle loro funzioni pedagogiche e sociali. Emerge, quindi, lanecessità di continuare a investire nel processo di cooperazione per sostenereulteriormente il processo di empowerment degli attori scolastici impegnatinello sviluppo di una didattica attiva nella prospettiva dell’inclusione
Medical and surgical treatment of hidradenitis suppurativa. A review
No full textHidradenitis suppurativa (HS) is a chronic inflammatory skin disease presenting with painful nodules, abscesses, sinus tracts, and scarring primarily affecting apocrine gland-rich intertriginous areas. HS prevalence ranges from 0.05 to 1%. The central pathogenic event in HS is believed to be the occlusion of the upper part of the folliculopilosebaceous unit, leading to the rupture of the sebofollicular canal with the consequent development of perifollicular lymphohistiocytic inflammation. The HS treatment choices are influenced by disease severity and its individual subjective impact, involving both medical and surgical interventions. However, given the chronic nature of HS, its destructive impact on social, working, and daily life of patients, its management is often frustrating for both the patient and physician. Hence, prompt and effective management strategies are urgently needed and a multidisciplinary approach is advocated. Therefore, in this article, we highlighted the main features of HS (clinical aspects, epidemiology, pathogenesis, diagnostic criteria, classifications, comorbidities, and treatments), so that awareness of this disease might be heightened in primary care physicians and surgeons, who may be the first health care providers to see patients with this disease owing to its characteristic clinical presentation (inflammatory nodules, abscesses, sinus tract, etc.)
2MTO, a new mapping tool to achieve lean benefits in high-variety low-volume job shops
No full textThis paper proposes the ‘Mapping Tool for Make-To-Order companies’ (2MTO), a new approach to map, analyse and achieve lean benefits in high-variety-low-volume job shops. The focus is, mainly, on the transitional phase from push to pull, when there is a compelling need to acquire a deep understanding of the current state of the system under analysis. Sometimes, in this initial phase, a pure pull approach cannot be developed and a job shop configuration must be maintained. If so, 2MTO allows selecting a suitable hybrid Production Planning and Control system to control Work-In-Process and to limit lead times, so as to quickly achieve lean benefits, without significantly altering the original layout. 2MTO is fully explained making reference to an Italian precision mechanic company, where the application of the method led to a successful implementation of a Workload Control system
Mechanics of Innovative Materials in Engineering Applications
No full textIn the last few decades, many engineers and researchers have dedicated their efforts to develop new classes of composite materials that can be used in the manufacture of aerospace components, aircrafts, boat hulls and sails, car bodies, long span roofs, as well as biomedical prostheses, electronic devices, and drones. It is evident that the structural elements that could be employed in these fields require peculiar features that composite materials can provide more than conventional constituents, such as isotropic mediums. Unidirectional fiber-reinforced composites represent one of the most characteristics materials that are currently used for these purposes. Nevertheless, it should be mentioned that advanced configurations of these mediums have attracted the attentions of many researchers, so that curvilinear fibers and their arbitrarily graded placements have been applied to achieve improved structural responses. These concepts fall within the topic of Variable Angle Tow (VAT) and Functionally Graded (FG) composites, respectively. Due to the advancements in the nanotechnologies, the reinforcing phases of composite materials can be applied at the nanoscale level. It is well-known that Carbon Nanotubes (CNTs) can improve the mechanical behavior of these composites because of their remarkable physical and chemical features. As proven by the enormous number of papers available in the pertinent literature, these kinds of nanostructures represent one of the most exploited innovative mediums. Enhanced mechanical features can be also obtained by designing materials and structures with particular geometries. This class of advanced components known as lattice-based metamaterials provides peculiar properties that could be exploited in several engineering fields. Analogously, tensegrity structures and pre-stressed lattices should be mentioned for the same purpose. In addition, various applications have been presented in literature to model SMART materials and SMART-structured systems. Examples of SMART applications involve large stroke SMART actuators, piezoelectric sensors, shape memory alloys, magnetostrictive and electrostrictive materials, as well as auxetic components. These particular constituents can be included in the lamination schemes of SMART structures to control and monitor the vibrational behavior or the static deflection of several composites. All things considered, the main aim of this Special Issue is to collect various investigations focused on the mechanical analysis of composite structures and materials. Numerical analyses, analytical solutions, and experimental studies involving these composites are welcomed. Authors are encouraged to present unconventional constitutive laws and innovative homogenization techniques, advanced mechanical configurations, as well as multiscale approaches, to provide a complete framework on these groundbreaking materials and facilitate their use in different engineering applications
Mechanics of Structural Components by Using a Numerical Approach Based on Blending Functions Mapping and a Strong Formulation
No full textGenerally, modelling composite materials in engineering design is a complicated subject because inclusions can have an arbitrary shape within a homogeneous matrix. In this matter, several numerical approaches have been introduced to overcome this particular issue. If a standard finite element (FE) model is used, the discretization in such cases must be very refined near the discontinuities due to low order approximating polynomials. This results in heavy numerical models that are complex to solve. Moreover, since the stress jumps among the elements within the mesh are not continuous the approximation of such field is not always accurate. For these reasons, the authors are proposing a new numerical approach based on the strong formulation which needs continuous displacements and stresses among the elements. The present feature gives the possibility of having a complete continuous field in the whole mesh and of presenting more accurate results if compared to classic FE approaches.
This important result is achieved due to the strong formulation that solves the partial differential system of equations that govern the physical problem. Moreover, the present paper presents a study wherein blending functions are utilized in the mapping technique to approximate the boundaries of the elements in the given mesh. Such blending functions are taken as NURBS (Not-Uniform Rational B-Splines) from CAD software. This novelty allows a more accurate geometrical approximation of the patches with consequent reduction on the total number of degrees of freedom since less elements are needed for accurately approximates the discontinuities present in the physical problem
Monitoring on-shelf availability, out-of-stock and product freshness through RFID in the fresh food supply chain
No full textThis paper presents the result of the RFID logistics pilot III (RLP3) project, which has dealt with the deployment of the radio frequency identification (RFID) technology and the development of an IT infrastructure for the management of the real-time data collected in a fresh food supply chain. More specifically, we report the benefits achievable in that supply chain, with a particular focus on the processes of inventory management at the retail store (both in the backroom and in the store area), shelf replenishment from the backroom and store area activities. The supply chain considered during the RLP3 consists of two distribution centres and three retail stores; the project targeted 145 fresh food items, belonging to the dairy and cold cuts categories. The real-time management of data relating to product history, through a specific dashboard, emerged as a promising tool to improve significantly some specific inefficiencies of the retail store, such as product traceability, amount of sales and démarque, out-of-stock occurrence, on-shelf availability and product freshness
La documentazione lucana nella prima età angioina (1266-1310). Una messa a punto della questione.
No full textPartendo dal lavoro di spoglio documentario, il lavoro mette insieme le informazioni reperite per ricostruire il quadro della produzione documentaria dei vescovi dell'area lucana, un tema utile a comprendere le condizioni pratica di governo di una rete diocesana non particolarmente ricca ma coinvolta in processi di riordino territoriale al pari di quelle di altre aree del Mezzogiorno, con uno sguardo attento al dibattito storiografico italiano sul connubio vescovi-notai
Il telelavoro nelle pubbliche amministrazioni tra legge e contrattazione
No full textLo scritto riproduce il testo della relazione presentata all’incontro “Il telelavoro nell’università: innovazione e opportunità. Workshop sul Protocollo di intesa del 15 marzo 2017”, dedicato alla sperimentazione del telelavoro nell’Università di Urbino Carlo Bo (Urbino, 16 maggio 2017, Aula Magna del Rettorato
A simulation tool for modelling and optimization of a job-shop production system
No full textThis study carries out an analysis of the machinery department of a main Italian company, which operates as a manufacturer of plants for the food industry. The analysis targets expressively the improvement of the total shop floor time of the jobs in the department and is supported by a simulation model developed under SIMUL8TM. Thanks to the model, the dispatching rule currently used by the company to schedule the jobs to be manufactured in the department was compared to additional 6 scheduling strategies, to evaluate potential improvements. The results obtained have shown that the most remaining operations (MROP) rule returns the most interesting results in terms of total shop floor time for the jobs examined. The outcomes of this paper could be useful to the targeted company to evaluate the implementation of alternative dispatching rules to schedule the jobs
