1,721,137 research outputs found
An Intermediate Level Representation Scheme for Secondary Features Recognition and B-rep Model Simplification.
No full textThe presence of fillets, rounds, chamfers and grooves is typical of many real-world mechanical components. Such features introduces in the model various topological and geometrical modifications which may alter the correct understanding of its main features. Another drawback which hinders the correct engineering evaluation of a part is that its geometrical and topological representation is not unique, since it depends either on the different procedures used to generate CAD models or on the different internal representation of the geometric kernels used by CAD packages.
The overall aim of this work is to define an intermediate representation scheme which incorporates information about minor features such as chamfers, fillets, rounds and grooves into a graph based representation and overcomes the problem of non-uniqueness in the geometric representation.
The representation scheme discussed here takes as input a solid model in B-rep form, and provides a description of a part at an higher level of abstraction in comparison with the raw B-rep description.
A procedure for secondary features recognition is also described in this paper. The proposed algorithm consists of two steps where both topological/geometrical properties and dimensional attributes are investigated in order to fulfil a correct recognition. The recognized secondary features are then inserted into the model as labels which qualify the relationships between the faces of the graph representation.
The resulting modelling scheme can be conveniently used for primary feature recognition as well as for other engineering analysis/simulation purposes
Flow diagram of study population, including a scheme of the geographical analysis used for the FD patients adherence.
No full textFigure was created by the author Bianconi F.</p
The identity landscape in the cataloging of scattered assets in the area of amelia
No full textA landscape is a place with peculiar characteristics, the result between men and nature interaction, which connotes it, both from the physical point of view and from the cultural perspective. The Umbrian countryside is teeming with historical and artistic references, still intact in their cultural value. The visitor immediately grasps this identity, this ancient history, but still alive and present, testifying in the stones and in the earth the experience of a rural and simple society. In order to document the conservation of these rural assets, the research has considered the drafting of descriptions, with meaningful pictures of the buildings, highlighting their characteristics of features and/or degradation. The cataloging of historical resources stands as a fundamental instrument for their restoration; it is a good opportunity to give a logical order to the vision of a landscape, able to connect information and create a systematic network of comparisons between common heritages
Interoperability among CAD/CAM/CAE systems: a review of current trends
No full textInteroperability among CAD/CAM/CAE systems is a
well known problem in product design and development.
At present geometrical data exchange among different software
packages is usually carried out through neutral file
formats (IGES or STEP) or through proprietary formats.
Data exchange processes are usually afflicted by several
problems, such as: information loss, redundancy, one-way
data exchange and static data exchange. These drawbacks
do not permit a really geometric-centric design, and even
if the model is transmitted without loss of information, the
exchanged data do not incorporate details such as sketches,
constraints and features, which represent the designer’s intent.
As a result, the model can hardly be modified, and the
original intent of the designer may be misunderstood.
During the last five years various solutions have been
proposed to solve the above mentioned problems. The aim
of this work is to investigate and discuss recent research
trends in this topic
The Role and Potential of 18F-FDG PET/CT in Malignant Melanoma: Prognostication, Monitoring Response to Targeted and Immunotherapy, and Radiomics
Full text linknovel therapeutic approaches, consisting of immune check-point inhibitors (ICIs) and molecularly targeted therapy, have thoroughly changed the clinical management of malignant melanoma (MM), the most frequent and deadly skin cancer. since only 30-40% of MM patients respond to ICIs, imaging biomarkers suitable for the pre-therapeutic stratification and response assessment are warmly welcome. In this scenario, positron emission computed tomography (PET/CT) with 18F-fluorodeoxyglucose (18F-FDG) has been successfully utilized for advanced MM staging and therapy response evaluation. Furthermore, several PET-derived parameters (SUVmax, MTV, TLG) were particularly impactful for the prognostic evaluation of patients submitted to targeted and immunotherapy. In this review, we performed a web-based and desktop research on the clinical applications of 18F-FDG PET/CT in MM, with a particular emphasis on the various metabolic criteria developed for interpreting PET/CT scan in patients undergoing immunotherapy or targeted therapy or a combination of both. furthermore, the emerging role of radiomics, a quantitative approach to medical imaging applying analysis methodology derived by the field of artificial intelligence, was examined in the peculiar context, putting a particular emphasis on the potential of this discipline to support clinicians in the delicate process of building patient-tailored pathways of care
Regional screening adherence mapped as SAR<sub>s</sub> by municipality, gender and extreme deprivation categories.
No full textFigure was created by the author Bianconi F. combing the caterpillar plots and maps generate with GeCO-sys an extension of [21].</p
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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