1,262 research outputs found
From Surface to Core: a Multi-layer Approach for the Real Estate Market Analysis of a Central Area in Catania
No full textThe proposed study deals with the analysis of the real estate market in the quarter of San Cristoforo in Catania, trying to integrate different approaches to define its possible articulation in submarkets. The first one is a phenomenal type of ap-proach that intends to represent some of the most manifest characteristics, and provides an initial hypothesis of classification of the cases (a census has been taken of) and delimitation of the segments, taking into account the ranges of pric-es registered inside the different classes of the characteristics. The second con-sists of an in-depth clustering analysis basing on three different hypotheses of three, four and five clusters respectively. The third one is a DRSA application, which is meant to extract from the studied sample a set of rules for the possible definition of a segment representing the general market rules. Given the com-plexity of the studied context, the results allow different interpretations and con-siderations of method
Gaps and overlaps of urban housing sub-market : hard clustering and fuzzy clustering approaches
No full textIt has long been argued that the housing market is spatially subdivided within an urban area. The argument has important implications for explaining how the housing market works and describing the distinctiveness of each housing submarkets, having determined, a priori, its segmentation. The most commonly used method for identifying housing submarkets is based on cluster analysis, although hedonic analysis has been extensively used. The hedonic analysis is used to derive dimensionality of the housing market by estimating what attributes are significant factors influencing housing price. Those attributes or variables can then be used for cluster analysis. The paper proposes an analysis of the real estate market in San Cristoforo, Catania, trying to integrate two different clustering analysis approaches to defining its possible submarkets articulation. The first one is a hard clustering approach using the K-means method and hypothesizing different numbers of clusters. The second one can be considered a verification of the previous results: a fuzzy algorithm is applied to obtain the fuzzy set membership degree of each data point to housing submarkets defined within the examined urban area. The comparison between the results coming from the two different approaches suggests some reflections about the use of these powerful techniques for integrating the knowledge of the complex and multi-layered real estate markets in the urban recovery policies
Energia a ambiente. Parole in sintesi
No full textQuesta pubblicazione raccoglie le “parole” ad oggi più ricorrenti nei campi dell’Energia e dell’Ambiente, con un occhio attento anche alla loro interrelazione, all’origine di uno dei problemi più importanti che il mondo si trova ad affrontare, quello del cambiamento climatico. La scelta delle voci da inserire non è stata facile per l’ampiezza e la complessità dei fenomeni da descrivere. Sono state considerate, ove possibile, le definizioni testuali già esistenti in normative internazionali, europee e nazionali pertinenti al campo considerato. Questa raccolta non pretende di produrre definizioni esaustive e conclusive sotto tutti i profili, ma si pone l’obiettivo di costruire un quadro di riferimento coerente, omogeneo e migliorabile progressivamente, prevendendo aggiornamenti che tengano in considerazione la rapidità con cui evolvono i contesti di riferimento, generando nuovi assetti normativi, nuove discipline ed evidenze scientifiche, nuove problematiche e conseguentemente nuovi termini
Fresh fruit and vegetables: a world of multiple interactions : the case of the Buenos Aires Central Wholesale Market (BACWM)
No full textThis research explores ethnographically the everyday social interactions between the ‘users’ of a particular marketplace, the Buenos Aires Central Wholesale Market (BACWM). The ‘users’ of this marketplace are the social actors who work there everyday, and who bring and buy fresh produce. These ´users´ are the ´makers´ of the BACWM since, through their everyday practices, interactions and interpretations and knowledge, they socially construct this hub of distribution
A Laboratory for Mathematics
No full textMacchine matematiche; dalla storia alla scuola is a book by Maria Grazia Bartolini Bussi and Michela Maschietto that provides a description of the reconstruction of many
historical machines for drawing, and their impact on the history of mathematics. Underlying the book’s thesis are ideas about
education and developments in neuroscience. Laura Tedeschini Lalli discussed the book and the educational experiments and
their goals with author Maria Grazia Bartolini Bussi
Functions and perspectives of public real estate in the urban policies: The sustainable development plan of Syracuse
No full textThis study deals with the problem of the negotiation between public and private actors in the urban planning, in the case study of the Plan for the Sustainable Development of Syracuse (Italy). The contribution focuses on the modalities of execution of the Plan that envisages the tool of the Public-Private Partnership (PPP). The study intends to verify the equity of the negotiation mechanism and the advantage gained by the public actor from conferring two large buildings to a Real Estate Fund. The contribution is structured in three parts. The first part provides the general programmatic and valuation frame referring to the features of the area. It describes the overall development perspectives and therefore the whole process of real estate development that would be supported by means of the contribution of the fund. The second part describes the implementation of a cash flow analysis based on a hypothesis of use of the buildings previously outlined. The third part provides the elements of the analysis of the investment that are retroactive on the design hypotheses converging on the value assessed to determine the quota of participation of the Municipality in the Real Estate Fund
I numeri dell'energia. Edizione 2015
No full textQuesto opuscolo tascabile raccoglie dati e indicatori utili a descrivere i vari aspetti che caratterizzano il sistema energetico e la sua evoluzione. L‘ottica è di tipo intersettoriale in linea con la vocazione dell’ENEA. Grafici e tabelle evidenziano ai diversi livelli, regionale, nazionale ed europeo, le interrelazioni tra Energia – Economia - Ambiente - Tecnologia - Ricerca & Innovazione. I dati statistici, quasi esclusivamente da fonti ufficiali, sono rivolti a fornire una visione d’insieme omogenea e confrontabile. L’Unità Studi e Strategie dell’ENEA, analogamente a quanto viene fatto nei maggiori paesi europei, ritiene utile la diffusione di queste statistiche in forma accessibile e compatta, per allargare la conoscenza su questi temi anche ad un pubblico di non addetti ai lavori
Real estate landscapes and the historic city : on how looking inside the market
No full textThe real estate capital is one of the most resistant forms of the process through which the social surplus product was consolidated, making possible the phenomenon of cities as a gradual layering of the “traces” of a settled community. The complexity and complementarity between homogeneity of the urban fabrics and heterogeneity of the architectural shapes led to the multiplicity of functions that properties play, encouraging the expectations of the players of its enhancement process: administrations, owners, large and small investors. This paper focuses on the interpretation of the urban pattern of the historic city through the analysis of the housing markets. The research deals with the case study of the town of Syracuse, a multifaceted urban context from several points of view. The formal and functional articulation of this real estate market justifies the use of different, layered and structured analysis tools to identify sub-markets, deepening the relationship between value/price
Proteome response of Staphylococcus xylosus DSM 20266T to anaerobiosis and nitrite exposure
No full textThe viability and competitiveness of Staphylococcus xylosus in meat mostly depend on the ability to adapt itself to rapid oxygen and nutrients depletion during meat fermentation. The utilization of nitrite instead of oxygen becomes a successful strategy for this strain to improve its performance in anaerobiosis; however, metabolic pathways of this strain underlying this adaptation, are partially known. The aim of this study was to provide an overview on proteomic changes of S. xylosus DSM 20266T cultured under anaerobiosis and nitrite exposure. Thus, two different cultures of this strain, supplemented or not with nitrite, were in vitro incubated in aerobiosis and anaerobiosis monitoring cell viability, pH, oxidation reduction potential and nitrite content. Protein extracts, obtained from cells, collected as nitrite content was depleted, were analyzed by 2DE/MALDI-TOF/TOF-MS. Results showed that DSM 20266T growth was significantly sustained by nitrite in anaerobiosis, whereas no differences were found in aerobiosis. Accordingly, nitrite content was depleted after 13 h only in anaerobiosis. At this time of sampling, a comparative proteomic analysis showed 45 differentially expressed proteins. Most differences were found between aerobic and anaerobic cultures without nitrite; the induction of glycolytic enzymes and glyoxylate cycle, the reduction of TCA enzymes, and acetate fermentation were found in anaerobiosis to produce ATP and maintain the cell redox balance. In anaerobic cultures the nitrite supplementation partially restored TCA cycle, and reduced the amount of glycolytic enzymes. These results were confirmed by phenotypic microarray that, for the first time, was carried out on cell previously adapted at the different growth conditions. Overall, metabolic changes were similar between aerobiosis and anaerobiosis NO2-adapted cells, whilst cells grown under anaerobiosis showed different assimilation profiles by confirming proteomic data; indeed, these latter extensively assimilated substrates addressed at both supplying glucose for glycolysis or fueling alternative pathways to TCA cycle. In conclusion, metabolic pathways underlying the ability of S. xylosus to adapt itself to oxygen starvation were revealed; the addition of nitrite allowed S. xylosus to take advantage of nitrite to this condition, restoring some metabolic pathway underlying aerobic behavior of the strain
Maria Cristina Arellana, Georgina Estevez, and Laura Tobie
No full textThis 1965 photograph shows Maria Cristina Arellana of Havana, Cuba, Georgina Estevez and Laura Tobie, both of Caracas, Venezuela in Hubert Hayes Memorial Log Cabin. Founder and director of the Mountain Youth Jamboree, Hubert H. Hayes (1901-1964) auditioned and directed youth to perform in folk dance, music, and folk and ballad singing. The jamboree was held in the Asheville City Auditorium (now known as Thomas Wolfe Auditorium) from 1948 to 1973, and Hayes’ wife, Leona Trantham Hayes (1913-1989) continued to direct the program after his death in 1964. Hubert Hayes was an author, playwright, and alumni of Duke University
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