Sur les sous-groupes nilpotents du groupe de Cremona

We describe the nilpotent subgroups of the group Bir(P^2(C)) of birational transformations of the complex projective plane. Let N be a nilpotent subgroup of class k>1; then either each element of N has finite order, or N is virtually metabelian

Le groupe de Cremona est hopfien

We describe the endomorphisms of the Cremona group and obtain that the Cremona group is hopfian

New record for the distribution of the colonial hydroid Cordylophora caspia (Pallas, 1771) (Cnidaria: Hydrozoa) in Argentina

Cordylophora caspia is a colonial, athecate hydroid inhabiting both in freshwater and brackish habitats. Its global distribution is in part due to its ability to tolerate a wide range of salinity. It is considered an invasive species and its control is widely studied because of the industrial and ecological problems it causes in many environments. We report for the first time the occurrence of this hydrozoan in Nahuel Rucá Lake (Buenos Aires province, Argentina) with some notes on its internal and external morphology.Fil: Deserti, Maria Irene. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Escalante, Alicia Haydee. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Acuña, Fabian Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentin

Feuilletages et actions de groupes sur les espaces projectifs

A holomorphic foliation $\mathscr{F}$ on a compact complex manifold $M$ is said to be an $\mathscr{L}$-foliation if there exists an action of a complex Lie group $G$ such that the generic leaf of $\mathscr{F}$ coincides with the generic orbit of $G$. We study $\mathscr{L}$-foliations of codimension one, in particular in projective space, in the spirit of classical invariant theory, but here the invariants are sometimes transcendantal ones. We give a bestiary of examples and general properties. Some classification results are obtained in low dimensions

Sierras del Tandil. First Meeting of Morpfological Sciences.

Las hidras son los cnidarios dulceacuícolas por excelencia y el ejemplo clásico de la forma pólipo dentro de dicho phylum. Sin embargo existe aún una gran confusión en lo que concierne a la taxonomía del género, ya que muchas especies presentan variaciones morfológicas que dificultan su identificación.Las hidras del hemisferio sur han sido poco investigadas, por lo que no se conoce con certeza cuales son las especies presentes y si éstas pertenecen a los grupos taxonómicos existentes hasta el momento. El presente estudio analiza la presencia de Hydra vulgaris en dos cuerpos lagunares distintos de la provincia de Buenos Aires (Argentina); lagunas ?Los Padres? y Nahuel Rucá, registrando para una de ellas dos formas distintas en su nematocisto holotrico isorriza.Fil: Deserti, Maria Irene. Universidad Nacional de Mar del Plata. Facultad de Cs.exactas y Naturales. Departamento de Cs.marinas. Laboratorio de Biologia de Cnidarios; Argentina;Fil: Zamponi, Mauricio Oscar. Universidad Nacional de Mar del Plata. Facultad de Cs.exactas y Naturales. Departamento de Cs.marinas. Laboratorio de Biologia de Cnidarios; Argentina;Fil: Escalante, Alicia Haydee. Universidad Nacional de Mar del Plata. Facultad de Cs.exactas y Naturales. Departamento de Biologia. Laboratorio 13 (ex Lab Ecologia de Agua Continentales); Argentina

Introducting Design Thinking in Social Innovation and in Public Sector: A design-based learning framework

Design Thinking (DT) is becoming a mantra in the different areas of innovation: including SI and public sector (Manzini and Rizzo, 2011; Deserti and Rizzo, 2015). Despite its large success DT is still applied in peripheral areas of public sector and SI where it is used as a methodology to conduct small scale experiments often supported by national and EU funds. This article focus on the interaction between DT, public sector innovation and SI from a twofold perspective: as an emergent trajectory of innovation in public sector; and as a framework on which to design processes of change in public organisations.The first line of research deals with the issue of how to produce new services in public sector SI inspired considering constraints like budget cut and the users’ expectations for high quality of delivery and interactions; the second one is putting attention on how to support capacity building in public sector in order to develop new competences to deal with innovation. The paper then reports a case conducted in the Municipality of Turin during which DT has been introduced as a design based learning framework to support employees to develop new competences by taking part in a service design project

Exploring the interplay between urban governance and smart services codesign

The large spreading of e-democracy and e-participatory tools and environments showed, and is still showing, that technologies offer new direction for dealing with the challenge of scaling the deliberative democracy perspective up to the urban governance scale. The recent growth of Urban Living Labs and Human Smart City initiatives is disclosing a promising bridge between the micro-scale of decision and the mechanisms of urban governance. In coherence with these perspectives, the article reports on the interplay between urban governance and the co-design of smart services in urban transformation as it has been observed and analysed in the two European research projects Periphèria and MyNeinghbourhood. The article also discusses the value of service codesign as a strategic practice to experiment new participatory governance in smart cities

Design and Social Innovation for the Development of Human Smart Cities

Urban transformation is widely recognized as a complex phenomenon, rich in uncertainty. It is the unpredictable consequence of complex interplay between urban forces (both top-down or bottom-up), urban resources (spatial, social, economic and infrastructural as well as political or cognitive) and transformation opportunities (endogenous or exogenous). The recent attention to Urban Living Lab and Human Smart City initiatives is disclosing a promising bridge between the micro-scale environments and dynamics of such forces and resources and the urban governance mechanisms. This bridge is represented by those urban collaborative ecosystems, where processes of smart service co-design take place through dialogic interaction with and among citizens within a situated and cultural-specific frame. As a response to new emerging needs and ways of generating value, during the last decades the design discipline - traditionally bound to the development of tangible artefacts - has expanded its focus on intangible artefacts such as signs, interactions, processes, and services. In this framework design is orienting its theories and practices towards a different object, putting people at the centre of the smartness of cities by recognizing the need of developing sustainable, micro and contextualized solutions that could eventfully be scaled up to achieve larger social impacts (Murray, Caulier- Grice and Mulgan, 2010). The Human Smart City paradigm (Concilio, Deserti and Rizzo, 2014) relies on the capability of the cities to realize and scale up services more sustainable because collaborative in nature based on anthropocentric networks that support the emergence of new typologies of partnerships of actors interested to solve some unmet societal problem. The paper presents this vision by discussing the results of a long-term experimentation conducted in the city of Milano under the framework of the My Neighbourhood European project

A case based discussion on the role of Design Competences in Social Innovation.

Thus far, many contributions in the field of design have described design’s role in the life cycle of a successful Social Innovation (SI). Design, in fact, has been proposed by many authors to be the most suitable approach to developing SI initiatives from their start-up to release. In particular, some authors have proposed Design Thinking as the best methodology for the development of new SIs; while others, promote Participatory Design as the best method to support SIs, heralding its process of collaboration, networking and coproduction. Nevertheless, many research results have demonstrated that the need to find a balance between social and economic objectives is one of the main barriers to SI. This paper discusses these general results as they have been elaborated in the context of the SIMPACT European project and focuses on the value of design competences to better design SI products, services and brands, which is explored through the discussion of two well established cases of SI in Europe