Mass accretion rates of clusters of galaxies: CIRS and HeCS

We use a new spherical accretion recipe tested on N-body simulations to measure the observed mass accretion rate (MAR) of 129 clusters in the Cluster Infall Regions in the Sloan Digital Sky Survey (CIRS) and in the Hectospec Cluster Survey (HeCS). The observed clusters cover the redshift range of $0.01<z<0.30$ and the mass range of $\sim 10^{14}-10^{15} {h^{-1}~\rm{M_\odot}}$. Based on three-dimensional mass profiles of simulated clusters reaching beyond the virial radius, our recipe returns MARs that agree with MARs based on merger trees. We adopt this recipe to estimate the MAR of real clusters based on measurements of the mass profile out to $\sim 3R_{200}$. We use the caustic method to measure the mass profiles to these large radii. We demonstrate the validity of our estimates by applying the same approach to a set of mock redshift surveys of a sample of 2000 simulated clusters with a median mass of $M_{200}= 10^{14} {h^{-1}~\rm{M_{\odot}}}$ as well as a sample of 50 simulated clusters with a median mass of $M_{200}= 10^{15} {h^{-1}~\rm{M_{\odot}}}$: the median MARs based on the caustic mass profiles of the simulated clusters are unbiased and agree within $19\%$ with the median MARs based on the real mass profile of the clusters. The MAR of the CIRS and HeCS clusters increases with the mass and the redshift of the accreting cluster, which is in excellent agreement with the growth of clusters in the $\Lambda$CDM model.Comment: 25 pages, 19 figures, 7 table

Antimicrobial resistance, an update from the ward: Increased incidence of new potential pathogens and site of infection-specific antibacterial resistances

In order to monitor the spread of antimicrobial resistance, the European Union requires hospitals to be equipped with infection control centers. With this aim, we analyzed 1583 bacterial strains isolated from samples of different origin from patients with community-onset and nosocomial infections in a public tertiary University Hospital on the outskirts of Turin, Italy. Statistical analyses of the isolates (source, type) and their antimicrobial resistance (AMR) were performed. The survey revealed infections associated with bacterial species considered as not-commensal and not-pathogenic, hence potentially emerging as new threats for human health. Conversely to the general observation of nosocomial strains being more resistant to antibiotics compared to community-acquired strains, nosocomial strains isolated in this study were more resistant only to 1/42 tested antibiotics (tetracycline). By adopting an ecological approach, we observed that blood infections are associated with the broadest range of species compared to infections affecting other areas and we obtained clear indications on the antibiotics that should be preferred in the treatment of infections at specific body sites. Future investigations carried out on a larger geographical scale will clarify whether these indications are limited to the geographical region investigated over this study, or whether the same trends are visible at national or international level

Review article: Current approaches and critical issues in multi-risk recovery planning of urban areas exposed to natural hazards

Post-disaster recovery has been addressed in the literature by different sectoral perspectives and scientific communities. Nevertheless, studies providing holistic approaches to recovery, integrating reconstruction procedures and socio-economic impacts, are still lacking. Additionally, there is a gap in disaster recovery research addressing the additional challenges posed by the effect of complex, multiple, and interacting risks on highly interconnected urban areas. Furthermore, recovery has only been marginally explored from a pre-disaster perspective in terms of planning and actions to increase urban resilience and recoverability. This paper provides a critical review of existing literature and guidelines on multi-risk disaster recovery with the twofold aim of identifying current gaps and providing the layout to address multi-risk recovery planning tools for decision-making. The literature on disaster recovery is investigated in the paper by focusing on the definition of the recovery phase and its separation or overlapping with other disaster risk management phases, the different destinations and goals that an urban system follows through recovery pathways, the requirements to implement a holistic resilience-based recovery roadmap, the challenges for shifting from single-risk to multi-risk recovery approaches, and the available tools for optimal decision-making in the recovery planning. Finally, the current challenges in multi-risk recovery planning are summarized and discussed. This review can be a ground basis for new research directions in the field of multi-risk recovery planning to help stakeholders in decision-making and optimize their pre-disaster investments to improve the urban system's recoverability.</p

When Collectivity Makes a Difference: Theoretical and Empirical Insights from Urban and Rural Communities in Colombia

[EN] In this paper, we analyse two Colombian communities using elements of the capability approach. The first, Comuna 8, is an urban community in Medellín, Colombia¿s second largest city. The second community is a Zona de Reserva Campesina (Peasant Farmer Reserve Zone) in the Cabrera municipality, in the Department of Cundinamarca. We explore the reasons why people value being part of a community, along with the collective capabilities that are expanded through community participation. As a product of these capabilities communities plan their own territories, which are examples of collective functionings. Social and environmental conversion factors, as well the historical background of the two communities, are key elements in the analysis. Finally, this research sheds light on individual and collective agency. This agency not only occurs in spaces recognised by Colombian law, but also in areas claimed by the communities themselves.This work was supported by Programa Adsideo 2015, Centro de Cooperacion al Desarrollo, Universitat Politecnica de Valencia. Ayudas Salvador de Madariaga, Subprograma de Movilidad, Plan Estatal de Investigacion Cientifica y Tecnica y de Innovacion 2013-2016.Boni Aristizábal, A.; Millan Franco, GF.; Millan Franco, MA. (2018). When Collectivity Makes a Difference: Theoretical and Empirical Insights from Urban and Rural Communities in Colombia. Journal of Human Development and Capabilities. 19(2):216-231. https://doi.org/10.1080/19452829.2017.1412408S216231192Alkire, S. (2002). Valuing Freedoms. doi:10.1093/0199245797.001.0001Biggeri, M., & Ferrannini, A. (2014). Opportunity Gap Analysis: Procedures and Methods for Applying the Capability Approach in Development Initiatives. Journal of Human Development and Capabilities, 15(1), 60-78. doi:10.1080/19452829.2013.837036Boni, A., & Walker, M. (2016). Universities and Global Human Development. doi:10.4324/9781315742793Crocker, D. A., & Robeyns, I. (s. f.). Capability and Agency. Amartya Sen, 60-90. doi:10.1017/cbo9780511800511.005Deneulin, S. (2014). Wellbeing, Justice and Development Ethics. doi:10.4324/9781315867090Deneulin, S., and S. Alkire. 2009. “A Normative Framework for Development?” InAn Introduction to the Human Development and Capability Approach: Freedom and Agency, edited by S. Deneulin and L. Shahani, 19–31. London: Earthscan.Drydyk, J. (2013). Empowerment, agency, and power. Journal of Global Ethics, 9(3), 249-262. doi:10.1080/17449626.2013.818374Apsan Frediani, A., Boni, A., & Gasper, D. (2014). Approaching Development Projects from a Human Development and Capability Perspective. Journal of Human Development and Capabilities, 15(1), 1-12. doi:10.1080/19452829.2013.879014Gaventa, J. (2006). Finding the Spaces for Change: A Power Analysis. IDS Bulletin, 37(6), 23-33. doi:10.1111/j.1759-5436.2006.tb00320.xHill, J. L. (1996). Psychological sense of community: Suggestions for future research. Journal of Community Psychology, 24(4), 431-438. doi:10.1002/(sici)1520-6629(199610)24:43.0.co;2-tIbrahim, S. S. (2006). From Individual to Collective Capabilities: The Capability Approach as a Conceptual Framework for Self‐help. Journal of Human Development, 7(3), 397-416. doi:10.1080/14649880600815982McMillan, D. W., & Chavis, D. M. (1986). Sense of community: A definition and theory. Journal of Community Psychology, 14(1), 6-23. doi:10.1002/1520-6629(198601)14:13.0.co;2-iRamos-Vidal, I., & Maya-Jariego, I. (2014). Sentido de comunidad, empoderamiento psicológico y participación ciudadana en trabajadores de organizaciones culturales. Psychosocial Intervention, 23(3), 169-176. doi:10.1016/j.psi.2014.04.00