1,721,351 research outputs found

    The Geometry of Coincidence: Nicholas of Cusa and the Quadrature of the Circle

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    This book offers a contribution to our understanding of Nicholas of Cusa’s theory of geometry. It is based not only on his—generally more famous—philosophical texts (e.g., De docta ignorantia, Idiota, etc.), but also, and more significantly, on the strictly speaking mathematical texts drafted between 1445 and 1459, where Cusanus attempts to provide a solution to the vexata quaestio of the squaring of the circle. First critically edited in 2010—and translated into Italian by the author in 2020—Cusanus’ Scripta mathematica are here scrutinized as to their context, genesis, and content, in order to shed light, on the one hand, on the philosophical and theological motives behind Cusanus’ mathematical endeavours; and, on the other hand, on the scope and limits of Cusanus’ geometrical constructive attempts to reach “mathematical perfection”. In addition to providing a scrupulous survey of Cusanus’ sources on mathematics, this book focuses on a little explored aspect in Cusanus’ work, namely his original theory of geometrical space as men’s space, where the activity of mensurare takes place, establishing relations of continuous proportionality to the original unity. In conclusion, the author provides an extensive account on the reception of Cusanus’ mathematical texts, from their early dissemination to the reactions of several thinkers throughout history, ensuring a full and rounded overview of Cusanus’ work in geometry, mathematics, and philosophy

    On the Philosophical Foundations of Measurements in General Relativity

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    In this paper, first, the question of what a measurement is in General Relativity is tackled; then, some foundational problems it involves are analysed. In particular, by recalling what a measurement is in general, we will try to precisely define what it is in General Relativity. Then, we will analyse, by means of a suitable example, same foundational problems it involves. It will be stressed that such foundational problems do not arise owing to the gauge invariance or the correlation among the measuring observers but owing to the principle of equivalence

    [18F]PARPi-PET in locally advanced oral cavity carcinoma

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    Treatment of locally advanced oral cavity carcinoma (OCC) generally includes surgical resection followed by adjuvant radiotherapy (RT) [1]. Adjuvant concurrent chemoradiotherapy (CRT) is usually required in case of extranodal extension and/or positive surgical margins [1]. In this setting, post-treatment evaluation of loco-regional status becomes difficult to visualize on clinical exam due to tissue distortion from prior surgery and flap reconstruction and RT-related effects on healthy tissues. Follow-up imaging recommendations indicate to repeat pre-treatment baseline imaging within 3 months of adjuvant therapy [1]. Discrimination of treatment injury from recurrent tumor represents still a major clinical need [2–4]. Recently, several reports on human cancers have suggested that positron emission tomography (PET) using fluorine-18 poly adenosine diphosphate ribose polymerase ([18F]PARP) tracer can discern these entitie

    An interdisciplinary framework to define strategies for digitalization and sustainability: Proposal of a ‘digicircular’ model

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    The criteria of economic, social, and environmental sustainability defined by the United Nations and consolidated in Agenda 2030 must become a ‘lighthouse’ to promote the use of digital technologies as an essential tool for sustainable development. Thus, the role of decision makers must therefore be oriented to promote technological development towards a sustainable world. However, any technological innovation, even the best, can give negative effects if not applied with a perspective on sustainability. This is increasingly evident with the growth of globalization. Thus, the aim of the present research is to identify challenges to achieve Circular Economy and Bioeconomy in a digital era and to define a blueprint for a ‘digicircular’ transformation. An integrated and interdisciplinary framework is proposed to prioritize digital capabilities which are hindering the digicircular economy implementation. An interdisciplinary and multicriteria tool to enable a digicircular model is developed. Bloomberg's environmental and Corporate Knights Global Sustainability Score which use private and public information from companies served for define the research model

    COVID-19 and cancer: implications for survival analysis

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    COVID-19 and Cancer: Implications for Survival Analysis

    Green transition: The frontier of the digicircular economy evidenced from a systematic literature review

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    Today, the issue of economic circularity is certainly not a new concept. It represents an essential issue in any production system since it is an alternative to the current production and consumption model. The importance of the topic is confirmed worldwide. However, there is still a “circularity gap” that can be bridged in the short and medium term, probably with the use of innovative and digital technologies. In fact, many researchers agree that the sustainable future can be achieved in the long term thanks to digital technologies (i.e., IoT, artificial intelligence, quantum computing etc.) which, thanks to their speed of calculation, are able to identify the right solutions at the right time. The challenge, therefore, will be to develop innovative technologies and tools for the efficient use of resources in industries for sustainable production. Thus, the aim of this study is to define the current state of the art and future research developments in this very promising field. To achieve this goal, the integration of a “set” of tools, based on the AHP method and the PRISMA protocol, is proposed. The results aim to be a guideline for decision makers and researchers interested in this topic

    A Bibliometric Multicriteria Model on Smart Manufacturing from 2011 to 2018

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    This study reviews the academic literature on Smart Manufacturing from the industry perspective. The methodological approach combines bibliometric analysis and multi criteria decisionmaking models. Firstly, the paper aims to identify the most relevant topics on Smart Manufacturing. Secondly, it aims to weigh them and to define their interdependences. The initial sample consists of 1.498 articles published between the 2011 and 2018. The semi-qualitative analysis returns an objective numerical result useful to define the predominant area on smart manufacturing applications

    The formal structure of the relativistic theories'

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    The structure of general relativity is discusse
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