106,291 research outputs found
MIXED OPTIMAL STOPPING AND STOCHASTIC CONTROL PROBLEMS WITH SEMICONTINUOUS FINAL REWARD FOR DIFFUSION PROCESSES
No full textWe consider mixed control problems for diffusion processes, i.e. problems which involve both optimal control and
stopping. The running reward is assumed to be smooth, but the stopping reward need only be semicontinuous.
We show that, under suitable conditions, the value function w has the same regularity as the final reward g, i.e. w is
lower or upper semicontinuous if g is. Furthermore, when g is l.s.c., we prove that the value function is a viscosity
solution of the associated variational inequality
Introduzione. Studiare l'Italia del terrorismo
No full textIn questa breve introduzione i curatori illustrano il carattere di novità che il volume introduce rispetto allo stato degli studi sulla storia del terrorismo italiano, che si sono tradizionalmente concentrati sul “soggetto terrorista”, ovvero i terroristi e le organizzazioni terroristiche. Le ricerche pubblicate all’interno del volume ambiscono invece a ricentrare l’oggetto dell’indagine e a ricostruire l’Italia del terrorismo, il modo in cui cioè gli italiani vissero, reagirono, interpretarono il fenomeno terroristico in tutte le sue diverse manifestazioni
La donna nelle riviste cattoliche ufficiali del secondo dopoguerra
No full textIl saggio ricostruisce le immagini della donna presenti nelle riviste cattoliche "ufficiali" più rappresentative del secondo dopoguerra: "Civiltà cattolica", "Vita e Pensiero", "Rivista italiana del clero", tenendo conto delle linee del pontificato di Pio XII rispetto alla questione femminile. Il modello della donna è ricostruito con particolare attenzione alle dimensioni della famiglia, del lavoro, dell'istruzione e ai modelli di santità. Il confronto costante è col modello elaborato all'interno del mondo comunista, ai punti di contatto e alle diversità
Recent advances in mining patterns from complex data
No full textData mining and knowledge discovery are advanced research fields with numerous algorithms and studies to extract patterns and models from complex data sources like blogs, event or log data, biological data, spatio-temporal data, social networks, mobility data, and sensor data and streams. The works presented in this special issue of the Journal of Intelligent Information Systems should keep the attention of both researchers and practitioners of data mining who are interested in the advances and latest developments in the area of extracting patterns. Behavioral Process Mining for Unstructured Processes by Claudia Diamantini, Laura Genga and Domenico Potena addresses the challenging problem of extracting useful information from the huge volume of events recorded by several of today's enterprise systems
A Relational Unsupervised Approach to Author Identification
No full textIn the last decades speaking and writing habits have changed.
Many works faced the author identification task by exploiting frequencybased
approaches, numeric techniques or writing style analysis. Following
the last approach we propose a technique for author identification
based on First-Order Logic. Specifically, we translate the complex data
represented by natural language text to complex (relational) patterns
that represent the writing style of an author. Then, we model an author
as the result of clustering the relational descriptions associated to the
sentences. The underlying idea is that such a model can express the typical
way in which an author composes the sentences in his writings. So,
if we can map such writing habits from the unknown-author model to
the known-author model, we can conclude that the author is the same.
Preliminary results are promising and the approach seems viable in real
contexts since it does not need a training phase and performs well also
with short texts
Solutions for Integrated Systems
No full textRecent empirical evidences shows that in many sectors the provision of integrated bundles of products and services is increasing. An example is found in the information technology (IT) sector, in which ERP (Enterprise Resource Planning) systems comprising hardware, software, and technical support and assistance are increasingly offered as turnkey solutions. The IT clients do not buy single components from different firms. Instead, they purchase a complete ERP system from a single supplier that provides software and hardware as well as consultancy services, post-sales assistance, system customization, and hardware maintenance. In some situations it is also possible to outsource the management of the complete IT system to the external provider, that charges a fixed rate for the storage, management, and processing of data and information.
The chapter will explore the implications for operations that firms should face while providing the new offering. In fact, firms that offer solutions are required to provide services previously carried out by business users (for example, after-sales support, maintenance, training, operations, financing, consultancy, and service provision). They must also develop embedded service technologies required to support the provision of integrated solutions. These include maintenance-oriented control technologies (mainly based on digital electronics), remote diagnostics, system operations, and so on
Dai Patti lateranensi alla crisi del consenso: i difficili percorsi della Chiesa italiana
No full textFederico Alessandrini. Santa Sede tra nazismo e crisi spagnola (1933-1938), di G. Alessandrini
No full textPlotone chimico. Cronache abissine di una generazione scomoda (a cura di G. Boaglio e M. Dominioni)
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