Framing Group Projects: Leadership and Style in Small Group Dynamics

The purpose of my Capstone was to look at small group dynamics and the factors that have a profound impact upon them. I used Bryant University’s IDEA Program as the template for my project for, and arena from which I collected my research. The IDEA Program is a three-day ideation and innovation program that all first-year students are required to participate in. I observed, filmed and questioned twenty-five of the first-year students participating in the program. After my research and analysis, I found that there were four factors that greatly influenced the dynamics of a small group, as well as its overall success. Those four factors include leadership style, the ability to play to the strengths of others, comfort with creativity and the detrimental effect of minimal contributors on the group

Bayesian networks for enterprise risk assessment

According to different typologies of activity and priority, risks can assume diverse meanings and it can be assessed in different ways. In general risk is measured in terms of a probability combination of an event (frequency) and its consequence (impact). To estimate the frequency and the impact (severity) historical data or expert opinions (either qualitative or quantitative data) are used. Moreover qualitative data must be converted in numerical values to be used in the model. In the case of enterprise risk assessment the considered risks are, for instance, strategic, operational, legal and of image, which many times are difficult to be quantified. So in most cases only expert data, gathered by scorecard approaches, are available for risk analysis. The Bayesian Network is a useful tool to integrate different information and in particular to study the risk's joint distribution by using data collected from experts. In this paper we want to show a possible approach for building a Bayesian networks in the particular case in which only prior probabilities of node states and marginal correlations between nodes are available, and when the variables have only two states

Cosmic rays in magnetized intracluster plasma

Recent results are reported on Magnetic Fields in Clusters of Galaxies, Diffuse Radio Emission, and Radio - X-ray connection in Radio Halos.Comment: 2 pages, 1 figure, Invited talk at the JD15 "Magnetic Fields in Diffuse Media", IAU XXVII General Assembly, Rio de Janeir

La condanna di Stefano Tempier e la "Declaratio" di Raimondo Lullo

Abstract not availabl

Luoghi d’interazione e cittadinanza attiva: il caso di Mazara del Vallo

La società postmoderna considera (erroneamente) rischiosa la mancata integrazione dei migranti; in risposta a questo dato, le comunità migranti si barricano dietro comprensibili comportamenti di difesa rispetto al tentativo di conformare le differenze culturali ai modelli prevalenti o dominanti. Tali considerazioni, che si rispecchiano nell’uso dello spazio urbano (i luoghi dell’abitare, del lavoro, del commercio e dei servizi) e raramente negli strumenti di pianificazione, inducono a riflettere sulla differenza tra “integrazione” e “interazione”, in un contesto che sempre più si definisce cosmopolita. Mazara del Vallo è un centro storicamente caratterizzato da forte presenza di comunità straniere, prevalentemente magrebine, che si concentrano in specifici quartieri del centro storico. A dispetto di una retorica integrazione ormai raggiunta, il presente contributo indaga sulla reale convivenza dei gruppi multiculturali e sulle capacità d’interazione che si esprimono nei luoghi dell’abitare e dello spazio pubblico

Forecasts for the detection of the magnetised cosmic web from cosmological simulations

The cosmic web contains a large fraction of the total gas mass in the universe but is difficult to detect at most wavelengths. Synchrotron emission from shock-accelerated electrons may offer the chance of imaging the cosmic web at radio wavelengths. In this work we use 3D cosmological ENZO-MHD simulations (combined with a post-processing renormalisation of the magnetic field to bracket for missing physical ingredients and resolution effects) to produce models of the radio emission from the cosmic web. In post-processing we study the capabilities of 13 large radio surveys to detect this emission. We find that surveys by LOFAR, SKA1-LOW and MWA have a chance of detecting the cosmic web, provided that the magnetisation level of the tenuous medium in filaments is of the order of 1% of the thermal gas energy.Comment: 19 pages, 18 figures. A&A accepted, in press. The public repository of radio maps for the full volumes studied in this work is available at http://www.hs.uni-hamburg.de/DE/Ins/Per/Vazza/projects/Public_data.htm

Why are central radio relics so rare?

In this paper we address the question why cluster radio relics that are connected to shock acceleration, so-called radio gischt, have preferentially been found in the outskirts of galaxy clusters. By identifying merger shock waves in cosmological grid simulations, we explore several prescriptions for relating the energy dissipated in shocks to the energy emitted in the radio band. None of the investigated models produce detectable radio relics within 100-200 kpc from the cluster centre. All models cause > 50 per cent of the detectable relic emission at projected distances > 800 kpc. Central radio relics caused by shocks that propagate along the line-of-sight are rare events for simple geometrical reasons, and they have a low surface brightness making them elusive for current instruments. Our simulations show that the radial distribution of observed relics can be explained by the radial trend of dissipated kinetic energy in shocks, that increases with distance from the cluster centre up until half of the virial radius.Comment: 6 pages, 4 figures. MNRAS accepte

Sustainable Urban Revitalization within a Historical Urban Neighborhood-A useful Approach to Complete

The historically important urban neighborhoods are practically a significant entity, a rich reservoir of social and economical milieu and cultural inheritance. Though, it faces many problems due to the rapid growth of population and the steady increases in the new requirements with concern of decompose this historical urban neighborhood. Presently sustainable urban revitalization is a theory to integrate inclusive concept of sustainability into urban revitalization process. Therefore to fix up such theory into true practices, a useful approach of urban revitalization planning should be worked out at the start. To work out how urban design would affect inclusive sustainable theory i.e. economy, environment, social equity and cultural values of urban revitalization schemes within Boro Bazaar Area (Khulna city, Bangladesh), a study investigating this issue is initiated. The paper highlights different approaches and strategies taken by different interview, questionnaire and field survey towards the methodologies of assessing, refurbishing and adding new value to the study areas, in view of increasing not only the quality of economical and social significance but also the quality of public spaces and services, for a better excellence of life of the society and neighbourhood.It is also believed that the research findings of this paper can strengthen the understanding of local developers, urban designers and government officials on how to plan a sustainable urban revitalization scheme afterwards