400 research outputs found
A House in the Form of a City. Casa Ceccarelli in Bologna (1962-63)
No full textThe Casa Ceccarelli in Bologna was designed by Giancarlo De Carlo for the astrophysicist and educator Marcello Ceccarelli in 1961-62, a time when the architect was working on the university settlement Collegio del Colle in Urbino, while his patron was completing the Croce del Nord (Northern Cross) - the first Italian radio telescope - in the Po valley. Born as a sort of experiment between two like-minded and unusual intellectuals, this building was, in De Carlo's words, “a flagrant case of a project-process, or in other words, of architecture” but also a laboratory for studying and testing new spatial inventions in a playful way. The author of this essay has lived in the house since he was a boy, experiencing it as a miniature city surrounded by its countryside and populated by numerous friends who were always there
Introduction. The culture of predictability and the nature of the unpredictable. Life sciences at the crossroad
No full textIn Casa del Popolo
No full textMostra di presentazione dello studio di riqualificazione di due case del popolo a Bologna: La Casetta Rossa, realizzato nel workshop svolto nel 2015 "La Casetta Rossa: studio ed evoluzione di una Casa del Popolo bolognese" e La Casetta del Battiferro, realizzato nel workshop svolto nel 2016 "Battiferro 2016: studio ed evoluzione di una Casa del Popolo bolognese", con fotografie di Lucio Rossi. Dipartimento di Architettura: prof. Francesco Ceccarelli; prof. Antonio Esposito; Dipartimento di Scienze Politiche e Sociali: prof.ssa Saveria Capecchi; dott.ssa Giulia Mitrugn
In Casa del Popolo
No full textMostra di presentazione dello studio di riqualificazione di due case del popolo a Bologna: La Casetta Rossa, realizzato nel workshop svolto nel 2015 "La Casetta Rossa: studio ed evoluzione di una Casa del Popolo bolognese" e La Casetta del Battiferro, realizzato nel workshop svolto nel 2016 "Battiferro 2016: studio ed evoluzione di una Casa del Popolo bolognese", con fotografie di Lucio Rossi. Dipartimento di Architettura: prof. Francesco Ceccarelli; prof. Antonio Esposito; Dipartimento di Scienze Politiche e Sociali: prof.ssa Saveria Capecchi; dott.ssa Giulia Mitrugn
Single-photon avalanche diodes: state of the art and perspectives in quantum applications
No full textSingle-photon detectors play a prominent role in quantum photonics. In this field, superconducting nanowire single-photon detectors (SNSPDs) excel in terms of performance, but their application is often limited by the necessity of cryogenic temperatures. Single-photon avalanche diodes (SPADs) represent an alternative in all these situations. Here, we focus on the progress made on silicon SPADs, whose performance in the visible range provide a valid option for several quantum applications, and, after that, we review the novel solutions that are blossoming for the telecom optical bands. In the end, we conclude with our vision of SPADs in quantum photonics applications
Timing measurements with Single Photon Avalanche Diodes: principles and perspectives
No full textPicosecond timing of single photons has laid the foundation of a great variety of applications, from life sciences to quantum communication, thanks to the combination of ultimate sensitivity with a bandwidth that cannot be reached by analog recording techniques. Nowadays, more and more applications could still be enabled or advanced by progress in the available instrumentation, resulting in a steadily increasing research interest in this field. In this scenario, single-photon avalanche diodes (SPADs) have gained a key position, thanks to the remarkable precision they are able to provide, along with other key advantages like ruggedness, compactness, large signal amplitude, and room temperature operation, which neatly distinguish them from other solutions like superconducting nanowire single-photon detectors and silicon photomultipliers. With this work, we aim at filling a gap in the literature by providing a thorough discussion of the main design rules and tradeoffs for silicon SPADs and the electronics employed along them to achieve high timing precision. In the end, we conclude with our outlook on the future by summarizing new routes that could benefit from present and prospective timing features of silicon SPADs
In Casa del Popolo, Idee progettuali e rappresentazioni di un patrimonio storico
No full textMostra di presentazione dello studio di riqualificazione di due case del popolo a Bologna: La Casetta Rossa, realizzato nel workshop svolto nel 2015 "La Casetta Rossa: studio ed evoluzione di una Casa del Popolo bolognese" e La Casetta del Battiferro, realizzato nel workshop svolto nel 2016 "Battiferro 2016: studio ed evoluzione di una Casa del Popolo bolognese", con fotografie di Lucio Rossi. Dipartimento di Architettura: prof. Francesco Ceccarelli; prof. Antonio Esposito; Dipartimento di Scienze Politiche e Sociali: prof.ssa Saveria Capecchi; dott.ssa Giulia Mitrugn
Uncompromising Empiricism Once Again : Big Data and the Case of Numerical Taxonomy
No full textBig Data are not rough data or mere tools. They foreshadow epistemological
and ethical changes and raise issues as to the nature of knowledge and the
categorization of reality. In this paper, we aim to analyse the so-called “data
science” from a historical and epistemological perspective. We will first consider
how, in the name of a new and uncompromising empiricism, a reconfiguration
of the traditional view of causality in science is claimed on the basis
of data analytics. Secondly, we will investigate a historical antecedent of the
current debate by comparing these claims with the ones raised by Numerical
Taxonomy, or Phenetics, in the second half of the twentieth century. This will
allow us to highlight how the opposition between knowledge-driven science
and data-driven science resurfaces in the debate about Big Data science
Does hip osteoarthritis have a protective effect against proximal femoral fractures? A retrospective study
No full textThe inverse relationship between proximal femoral fracture incidence and hip osteoarthritis remains controversial. However, femoral neck fractures rarely occur in patients with hip osteoarthritis, suggesting a protective effect of osteoarthritis. We sought to determine if the severity of osteoarthritis influenced fracture type. We examined the radiographs of 190 consecutive patients treated at our institution after hip trauma. They were divided into three groups according to the outcome of the trauma: femoral neck fracture; trochanteric fracture; and no fracture. We then analysed the severity of osteoarthritis within these groups. No relationship between the grade of hip osteoarthritis and the presence of a proximal femoral fracture was found. However, the grade of osteoarthritis was related both to the outcome of the trauma (p<0.0001) and to the location of the fracture (p<0.0001). Patients with osteoarthritis of the hip had a three-fold increased likelihood of trochanteric fracture compared to femoral neck fracture. Osteoarthritis does not protect against proximal femoral fractures, but strongly affects the location of the fracture in the proximal femur, increasing the possibility of a trochanteric location. © 2014 Wichtig Publishing
Toward complex arbitrary photon statistics measurement through imperfect integrated single-photon detector arrays
No full textIn the last few decades, quantum photonics has emerged as a captivating and rapidly evolving field at the intersection of quantum mechanics and photonics. The ability to harness the fundamental properties of light at the quantum level holds the key to unlocking revolutionary progresses in advanced computing, secure communication, and high-precision measurements.
In this work, we explore the feasibility of photon statistics measurements with integrated SPAD arrays by employing both analytical modeling and simulations to study realistic devices with their non-idealities.
While dark count rate, limited detection efficiency and the finite number of detectors in an array can be accounted for, typical reconstruction methods are shown to struggle with cross-talk at higher photon counts
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