711 research outputs found
Tongiorgi Tomasi, Lucia (2021), Ritratti, libri, giardini. Sebastiano del Piombo, Fernando Colombo, Agostino Chigi. Firenze: Leo S. Olschki Editore. xx + 202 pp. [Reseña de libro]
No full textReseña de libro, Tongiorgi Tomasi, Lucia (2021), Ritratti, libri, giardini. Sebastiano del Piombo, Fernando Colombo, Agostino Chigi. Firenze: Leo S. Olschki Editore. xx + 202 pp. ISBN: 978-88-22267-68-9
Spatial augmented reality and simulations to improve abdominal aortic aneurysm diagnosis and monitoring
No full textIn this work we propose an approach based on IT tools to improve all the clinical activities related
to Abdominal Aortic Aneurism (AAA) detection and treatment. In particular, the approach is focused
on a 3D CAD model of the AAA and CFD simulations to improve diagnosis by evaluation of rupture
risk indicators and Spatial Augmented Reality (SAR) to simulate endovascular repair (EVAR) of the
pathology. Geometric model of the vascular wall is build from Computer Tomography (CT) data by
using and customizing algorithms and tools implemented in Vascular Modeling ToolKit (VMTK) software
library. Four methodologies of geometry initialization are compared and we choose those able to
describe the vascular disease excluding any foreign tissue (i.e., bones, internal organs, and muscles).
An evaluation of the problems connected to the relative parameters of reconstruction, their influence
for the correct geometry representation, focusing the attention on segmentation level and the smoothing
of the surface, are presented. In particular, we point out the effect of the smoothing by the use
of the Hausdorff distance. We propose a standardized process able to guide users in the modeling
of this type of vessels; moreover, SAR can dramatically improve the efficacy of AAA visualization for
some different clinical aspects. The 3D geometry of the AAA can be used to carry out CFD analysis, to
calculate parameters of the blood flow and evaluate the rupture risk indicator, like Oscillatory Shear
Index (OSI). The availability of risk indicators facilitates the physician in the diagnosis and prognosis.
Finally, we present a methodology and tools to simulate EVAR on a specific patient based on geometry
reconstruction and CFD simulations; this type of procedure can effectively improve training and
facilitate endovascular surgery
Root hair anatomy and morphology in Posidonia oceanica (L.) Delile and substratum typology: First observations of a spiral form
No full textThe morpho-anatomical root hair features of P. oceanica ramets collected in meadows settled on different substrata (sand, matte and rock) were analysed. On each substratum, nine plagiothropic rhizomes each one composed by 3–6 interconnected short shoots were collected between April and May 2016 at 10 m of depth. On sand and on rock, the adventitious roots showed two distinct tubular and spiral-shaped hairs, clustered in yellowish-gray gelatinous pads. Tubular root hair tips were dactiliform and generally attached to grains of rock fragments. Moreover, a sub-circular swelling zone occurred. On matte, root hairs did not form gelatinous pads, were very short and had a simple distal portion. The root hair anatomy and morphology described here provides new information on the P. oceanica root system that can express a remarkable root hair polymorphism
Sebastiano Moruzzi, Vaghezza. Confini, cumuli e paradossi, Laterza, Bari 2012, pp. 196
No full textThe text offers a Critical Review of "Vaghezza. Confini, cumuli e paradossi" by Sebastiano Moruzzi. The author critically reflects on the book by considering its methodologies, its arguments, and its relation with other books of the same type and on the same subject.Il testo propone una Lettura Critica del libro "Vaghezza. Confini, cumuli e paradossi" di Sebastiano Moruzzi. L'autrice riflette criticamente sul libro considerandone le metodologie, gli argomenti e il nesso con altri libri dello stesso tipo e sullo stesso argomento
Client-consultant interaction practices: Sources of ingenuity, value creation and strategizing
No full textService providers increasingly choose to interact with their clients. Previous studies show that client’s resources and activities can influence the service provider’s ability to create value, to be creative, and to develop competitive strategies. Yet several gaps can be identified in the literature regarding how these abilities are impacted by client-consultant interaction (c-c-i) practices. The purpose of this doctoral thesis is to explain the service providers’ varying ability to offer highly valuable solutions to their clients’ problems, in terms of the practices through which consultants interact with their clients. The main research questions are;
How do client-consultant interaction practices influence a firm’s ability to offer unique value propositions and deliver ingenious solutions, and how do these practices influence the formation of the firm’s strategy? These questions are answered through four papers. Each paper answers a sub-question.
Paper 1 focuses on the impact of c-c-i practices on the service providers’ ingenuity capabilities. The paper asks how project teams shatter constraints in ill-structured problem-solving situations, and what implications this finding has for the understanding of creative action in organizations. This paper sheds light on the c-c-i practices through which project teams shatter their constraints and create ingenious solutions.
Paper 2 focuses on the creative aspects of c-c-i practices and presents the experiences of service providers who have been successful in capitalizing on the creative resources provided by their clients.
Paper 3 is an inquiry into the relationship between c-c-i practices and the service providers’ ability to offer unique value propositions. The paper provides a model to define and assess value created through c-c-i practices. The findings of this paper show that value creation is maximized through c-c-i practices that provide access to various forms of capital and practice that enable capital exploitation. Unique value offerings can be developed from knowing what c-c-i practices to enact in different circumstances.
Paper 4 focuses on the implications of c-c-i practices for the emergence of new strategies. The findings show that mundane business operations can be the locus of strategizing, and that clients can play a role in emergent strategy formation. Theoretical resources for this research are drawn from literature on practice theory, strategy, organizational creativity, and value creation. An explorative research design is used and qualitative data are gathered from 30 cases through extensive field work. Both in-depth and comparative case analyses are performed
Client-consultant interaction practices: Sources of ingenuity, value creation and strategizing
No full textService providers increasingly choose to interact with their clients. Previous studies show that client’s resources and activities can influence the service provider’s ability to create value, to be creative, and to develop competitive strategies. Yet several gaps can be identified in the literature regarding how these abilities are impacted by client-consultant interaction (c-c-i) practices. The purpose of this doctoral thesis is to explain the service providers’ varying ability to offer highly valuable solutions to their clients’ problems, in terms of the practices through which consultants interact with their clients. The main research questions are;
How do client-consultant interaction practices influence a firm’s ability to offer unique value propositions and deliver ingenious solutions, and how do these practices influence the formation of the firm’s strategy? These questions are answered through four papers. Each paper answers a sub-question.
Paper 1 focuses on the impact of c-c-i practices on the service providers’ ingenuity capabilities. The paper asks how project teams shatter constraints in ill-structured problem-solving situations, and what implications this finding has for the understanding of creative action in organizations. This paper sheds light on the c-c-i practices through which project teams shatter their constraints and create ingenious solutions.
Paper 2 focuses on the creative aspects of c-c-i practices and presents the experiences of service providers who have been successful in capitalizing on the creative resources provided by their clients.
Paper 3 is an inquiry into the relationship between c-c-i practices and the service providers’ ability to offer unique value propositions. The paper provides a model to define and assess value created through c-c-i practices. The findings of this paper show that value creation is maximized through c-c-i practices that provide access to various forms of capital and practice that enable capital exploitation. Unique value offerings can be developed from knowing what c-c-i practices to enact in different circumstances.
Paper 4 focuses on the implications of c-c-i practices for the emergence of new strategies. The findings show that mundane business operations can be the locus of strategizing, and that clients can play a role in emergent strategy formation. Theoretical resources for this research are drawn from literature on practice theory, strategy, organizational creativity, and value creation. An explorative research design is used and qualitative data are gathered from 30 cases through extensive field work. Both in-depth and comparative case analyses are performed
A 3V 15b 157W Cryo-CMOS DAC for Multiplexed Spin-Qubit Biasing
No full textThis paper presents a 15b cryo-CMOS DAC for multiplexed spin-qubit biasing implemented in a 22-nm FinFET process. The integrating-DAC architecture and the robust digitally-assisted high-voltage output stage enable a low power dissipation (157W) and small area (0.08mm2) independent of the number of biased qubits, and a 3V output range well beyond the nominal supply. This represents the first scalable solution for cryo-CMOS qubit biasing, which achieves a 1.8× better voltage resolution with a lower DNL over a 3× larger output range than the current state-of-the-art. Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.QCD/Sebastiano LabElectronicsQuantum Circuit Architectures and Technolog
Le specie aliene negli agro-ecosistemi : implicazioni pratiche ed aspetti ecologici
No full textAlien insect invasion has greatly increased in recent years in Italy on crops, forests, urban environments and even
natural ecosystems. Their accession-rate over about 60 years has increased from about 0.5-1 species/year in the
1950s –‘60s to about 7-8 species/year in the last two decades. Several of these alien species have become the primary
pests of cultivated plants either through direct or indirect damage, as vectors of plant diseases.Trade and tourist
activities are thought to mainly account for the majority of exotic pest accession, some of which may affect plants
in woodlands and natural ecosystems. Quarantine phytosanitary measures appear to not always be effective in preventing
the accidental introduction of alien species. Therefore, the risk of further accession remains consequently
very high
Nano-MOSFET - Foundation of Quantum Computing Part I
No full textAs big strides were being made in many science fields in the 1970s and 80s, faster computation for solving problems in molecular biology, semiconductor technology, aeronautics, particle physics, etc., was at the forefront of research. Parallel and super-computers were introduced, which enabled problems of a higher level of complexity to be solved. At about the same time, Nobel-laureate physicist Richard Feynman launched what seemed at the time a wild idea; to build a computer based on quantum physics concepts such as superposition and entanglement [1]. The outrageousness of his ideas is documented in the book 'Surely, You're Joking, Mr. Feynman' [2].Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.QCD/Vandersypen LabQCD/Sebastiano LabQuantum Circuit Architectures and Technolog
Image classification by integration of neural networks and machine learning
No full textA new approach is proposed for the integration of neural networks (NN) with machine learning techniques to build up an image classification system. In particular, the author uses a symbolic technique for inductive learning from examples to provide object models. Such models are used to design the architecture and to initialize the weights of a backpropagation NN. Models include uncertainty aspects represented by fuzzy predicates, and relational properties for contextual classification. Both aspects are suitably mapped into the automatically designed NN. Preliminary results in a biomedical application are presented
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