Search results for " proximity."

Bootstrap validation of links of a minimum spanning tree

2018

We describe two different bootstrap methods applied to the detection of a minimum spanning tree obtained from a set of multivariate variables. We show that two different bootstrap procedures provide partly distinct information that can be highly informative about the investigated complex system. Our case study, based on the investigation of daily returns of a portfolio of stocks traded in the US equity markets, shows the degree of robustness and completeness of the information extracted with popular information filtering methods such as the minimum spanning tree and the planar maximally filtered graph. The first method performs a "row bootstrap" whereas the second method performs a "pair bo…

Prezzo di mercato dei beni fondiari e fattori che lo determinano in un’analisi edonimetrica Gis-based: il caso studio di un’area rurale della Sicilia…

Impact de la proximité identitaire « publics-musée d'art » sur la fréquentation des lieux culturels : le cas des musées d’art

2017

The value that individuals attach to a cultural object can be explained, among other things, by their identity project of belonging to a group. This thesis proposes new strategic orientations for museums that increase museum attendance, change the relationship of the art museum with the public and attract other individuals.This research allowed the conceptualization of the proximity of the "public-art museum" identity, the confirmation of its dimensions and antecedents, and finally the analysis of the relationship between the "public-art museum" identity proximity and the art museum attendance. Moreover, the development of a "public-art museum" identity proximity scale, offers to broaden th…

Proximité identitaire « publics musée d’art » et fréquentation du lieu culturel

2018

The value that individuals attach to a cultural object can be explained, among other things, by their individual identity project or belonging to a group. We will try to consider new strategic orientations for art museum professionals that can achieve several objectives regarding the museum visitors (or non-visitors): increase their attendance, change the relationship of the art museum with the public and attract other individuals.This work allows the conceptualization of the "public-art museum" identity proximity, the confirmation of its dimensions, and finally, the analysis of the relationship between the "public-art museum" identity proximity and the attendance the behaviour of the cultu…

Lavoro a termine e contrattazione collettiva

2014

Nel ripercorrere l’evoluzione della disciplina del lavoro a tempo determinato, considerato come emblema della flessibilità e, al contempo, quale strumento per favorire l’incremento dell’occupazione, l’A. analizza in particolare il ruolo svolto dalla contrattazione collettiva, che talvolta è destinataria di un ampio rinvio legale, talaltra si ritrova ad operare entro ristretti limiti. Analysing the evolution and the regulation of fixed-term contract, considered as a symbol of flexibility and, at the same time, as a means to increase employment, the Author particularly examines the role played by collective bargaining, that sometimes is connected to a large legal referral, sometimes has to op…

Residential proximity to environmental pollution sources and risk of rare tumors in children.

2016

Background: Few epidemiologic studies have explored risk factors for rare tumors in children, and the role of environmental factors needs to be assessed. Objectives: To ascertain the effect of residential proximity to both industrial and urban areas on childhood cancer risk, taking industrial groups into account. Methods: We conducted a population-based case-control study of five childhood cancers in Spain (retinoblastoma, hepatic tumors, soft tissue sarcomas, germ cell tumors, and other epithelial neoplasms/melanomas), including 557 incident cases from the Spanish Registry of Childhood Tumors (period 1996-2011), and 3342 controls individually matched by year of birth, sex, and region of re…

Childhood leukaemia risk and residential proximity to busy roads

2018

BACKGROUND: Current evidence suggests that childhood leukaemia can be associated with residential traffic exposure; nevertheless, more results are needed to support this conclusion. OBJECTIVES: To ascertain the possible effects of residential proximity to road traffic on childhood leukaemia, taking into account traffic density, road proximity and the type of leukaemia (acute lymphoid leukaemia or acute myeloid leukaemia). METHODS: We conducted a population-based case-control study of childhood leukaemia in Spain, covering the period 1990-2011. It included 1061 incidence cases gathered from the Spanish National Childhood Cancer Registry and those Autonomous Regions with 100% coverage, and 64…

Childhood leukemia and residential proximity to industrial and urban sites

2015

BACKGROUND: Few risk factors for the childhood leukemia are well established. While a small fraction of cases of childhood leukemia might be partially attributable to some diseases or ionizing radiation exposure, the role of industrial and urban pollution also needs to be assessed. OBJECTIVES: To ascertain the possible effect of residential proximity to both industrial and urban areas on childhood leukemia, taking into account industrial groups and toxic substances released. METHODS: We conducted a population-based case-control study of childhood leukemia in Spain, covering 638 incident cases gathered from the Spanish Registry of Childhood Tumors and for those Autonomous Regions with 100% c…

Risk of bone tumors in children and residential proximity to industrial and urban areas: New findings from a case-control study

2017

Few epidemiologic studies have explored risk factors for bone tumors in children, and the role of environmental factors needs to be analyzed. Our objective was to ascertain the association between residential proximity to industrial plants and urban areas and risk of bone tumors in children, taking into account industrial groups and toxic pollutants released. A population-based case-control study of childhood bone cancer in Spain was carried out, covering 114 incident cases obtained from the Spanish Registry of Childhood Tumors (between 1996 and 2011), and 684 controls individually matched by sex, year of birth, and autonomous region of residence. Distances from the subject's residences to …

Risk of neuroblastoma and residential proximity to industrial and urban sites: A case-control study

2016

Background: Neuroblastoma is the most common extracranial solid tumor in children but its etiology is not clearly understood. While a small fraction of cases might be attributable to genetic factors, the role of environmental pollution factors needs to be assessed. Objectives: To ascertain the effect of residential proximity to both industrial and urban areas on neuroblastoma risk, taking into account industrial groups and toxic substances released. Methods: We conducted a population-based case-control study of neuroblastoma in Spain, including 398 incident cases gathered from the Spanish Registry of Childhood Tumors (period 1996–2011), and 2388 controls individually matched by year of birt…