Search results for "NETWORK"
showing 10 items of 7718 documents
Robust linear quadratic mean-field games in crowd-seeking social networks.
2013
We consider a social network where opinions evolve following a stochastic averaging process under the influence of adversarial disturbances. We provide a robust mean-field game model in the spirit of H∞-optimal control, establish existence of a mean-field equilibrium, and analyze its stochastic stability.
Storia del Design | Per una didattica social
2018
I social network e in particolare fecebook possono oggi essere una fonte inesauribile di distrazione allo studio universitari come pure offrire allo studente – e al docente – inedite possibilità didattiche. Come ogni tecnologia, le "nuove tecnologie social" possono essere usate nel bene e nel male: come intriganti strumenti didattici o come autentici dispositivi di ludico autolesionismo. Il presente articolo mira a indagare i vantaggi di una didattica social perfino di una materia tanto "polverosa" come la storia (del design); ovvero: maggiore partecipazione, sollecitazione benefica, coinvolgimento emotivo e conseguente condivisione di testi, immagini e materiali audiovisivi.
NETWORKS, KNOWLEDGE AND COMPLEXITY : an Inquiry into the Architectural Dynamics of Strategic Networks
2018
The purpose of the book is to provide an interpretative framework helping to understand the emergence and development of strategic networks and their multilevel architectures. Drawing on three complementary theoretical approaches (strategic network theory, the knowledge-based theory of the firms, and complexity theory), the book considers strategic networks as complex dynamic networks of knowledge, resources, and capabilities. This view is able to shed new light on the multilevel architecture epitomizing strategic networks and the specific processes of knowledge, resource, and capability transfer, sharing, and creation that occur within and between network levels. Accordingly, the volume cl…
Productivity change of the Spanish Port System: impact of the economic crisis
2016
The main goal of this study was to assess the impact of the economic crisis on the productivity growth of the Spanish Port System (SPS). The Malmquist Productivity Index (MPI) was estimated for the 28 Port Authorities of the SPS, for a 'non-crisis period' (2005-2008) and a 'crisis period' (2008-2011). From a policy perspective, the MPI is a very useful approach for assessing the productivity change because it can be decomposed into the catching-up index and the frontier productivity index. The results showed that the economic crisis did not impact all of the Spanish Port Authorities equally. Some Port Authorities presented higher productivity growth during the crisis period than in the non-…
Business agreements objectives and decisions: a field research
2013
PurposeMany research studies in operations management (OM) and strategic management (SM) investigate how different kinds of firm decisions regarding business relationships can positively affect a firm's operations performance, resource endowment, and competitive position. Very few studies exist, however, that have attempted to illuminate the actual behaviors of managers when making strategic decisions about their intercompany relationships; rather, most existing studies focus on normative theory. The purpose of this paper is to explore linkages between the “set” of strategic objectives that managers are willing to pursue, the “set” of networking decisions they make, and the “set” of busines…
Public Service Media’s Funding Crisis in the Face of the Digital Challenge
2020
The funding crisis of Public Service Media (PSM) is also a crisis affecting its legitimacy, business model, audience, innovation and transformation required to adapt to the current digital ecosystem, which is dominated by the changes in the access and consumption ways available to citizens, as well as by the new telecommunications global players. Eleven European countries have cut back the budgets of their public service media organizations during the past five years, and those which haven’t done it yet are facing adjustment plans until 2020. Besides financial pressures, European PSM is also facing increasing opposition from private operators, populist parties and the constant appetite for …
The double-edge sword effect of interorganizational trust on involvement in interorganizational networks: The mediator role of affective commitment
2020
Abstract Some organizations collaborate with other partner organizations to reach common goals, establishing interorganizational networks. The governance of the network is often enacted by an interorganizational governing team composed of the directors or top managers of the partner firms. This team plans, manages, and supervises the advancement of the network’s common goals. The success of the network depends, to a large extent, on the involvement of the members of the governing team. In this study, we tested a multilevel model of the antecedents of the involvement of governing team members in the management activities of interorganizational networks. We examined whether the relationship b…
Evaluation of the Possible Impact of Care Network for Stroke and Transient Ischemic Attack on Rates of Recurrence
2011
International audience
Efficient differentiation of embryonic stem cells into mesodermal precursors by BMP, retinoic acid and Notch signalling
2012
The ability to direct differentiation of mouse embryonic stem (ES) cells into specific lineages not only provides new insights into the pathways that regulate lineage selection but also has translational applications, for example in drug discovery. We set out to develop a method of differentiating ES cells into mesodermal cells at high efficiency without first having to induce embryoid body formation. ES cells were plated on a feeder layer of PA6 cells, which have membrane-associated stromal-derived inducing activity (SDIA), the molecular basis of which is currently unknown. Stimulation of ES/PA6 co-cultures with Bone Morphogenetic Protein 4 (BMP4) both favoured self-renewal of ES cells and…
Nonlocal Elastic-Damage Interface Mechanical Model
2007
The paper presents a nonlocal extension of the elastic-damage interface mechanical model, which is able to describe the effects of the spatially extended microstructure on the decohesion (or fracture) process along a surface. The key feature of the proposed model is an integral constitutive relation between tractions and displacement jumps at the interface. The presence of an integral kernel brings in the model an internal length measure, which characterizes the transition from the microscale, dominated by heterogeneities and discontinuous media, to the mesoscale, characterized as an enhanced homogenized continuum with nonlocal features. The motivations and the fields of applications of the…