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4. Multivariate approximation: Theory and applications 2020

Author

Angeloni L., Conti C., De Marchi S., Francomano E., Vinti G., Angeloni L., Conti C., De Marchi S., Francomano E., and Vinti G.

Subjects
Multivariate approximation
Abstract

A summary of the main facts about the Conference ‘Multivariate Approximation: Theory and Applications’ (MATA 2020) held at the Department of Mathematics and Computer Science of the University of Perugia (Italy), on January 16-18, 2020 and the contents of the associated Special Issue appearing on Dolomites Research Notes on Approximation, are here reported.

Published
2021

7. Preface

Author

Bardaro, C., Pucci, P., Sambucini, A. R., and Vinti, G.

Published
2020

13. Lifespan extension by increased expression of the Drosophila homologue of the IGFBP7 tumour suppressor

Author

Alic, N., Hoddinott, M. P., Vinti, G., and Partridge, L.

Subjects
Male, Aging, Longevity, Down-Regulation, Gene Expression, Inhibitor of Apoptosis Proteins, Animals, Drosophila Proteins, Insulin, RNA, Messenger, insulin/insulin-like growth factor signalling, Sequence Homology, Amino Acid, fungi, Original Articles, insulin-like growth factor-binding protein, Up-Regulation, Insulin-Like Growth Factor Binding Proteins, aging, Drosophila, IMP-L2, insulin, insulin-like growth factor signalling, insulin-like growth factor-binding protein, insulin-like peptides, human longevity, fat-body, cells, receptor, protein, growth, brain, dFOXO, association, Oxidative Stress, Eukaryotic Initiation Factor-4E, Adipose Tissue, Drosophila, Female, IMP-L2, Protein Binding, Signal Transduction
Abstract

P>Mammals possess multiple insulin-like growth factor (IGF) binding proteins (IGFBPs), and related proteins, that modulate the activity of insulin/IGF signalling (IIS), a conserved neuroendocrine signalling pathway that affects animal lifespan. Here, we examine if increased levels of an IGFBP-like protein can extend lifespan, using Drosophila as the model organism. We demonstrate that Imaginal morphogenesis protein-Late 2 (IMP-L2), a secreted protein and the fly homologue of the human IGFBP7 tumour suppressor, is capable of binding at least two of the seven Drosophila insulin-like peptides (DILPs), namely native DILP2 and DILP5 as present in the adult fly. Increased expression of Imp-L2 results in phenotypic changes in the adult consistent with down-regulation of IIS, including accumulation of eIF-4E binding protein mRNA, increase in storage lipids, reduced fecundity and enhanced oxidative stress resistance. Increased Imp-L2 results in up-regulation of dilp2, dilp3 and dilp5 mRNA, revealing a feedback circuit that is mediated via the fly gut and/or fat body. Importantly, over-expression of Imp-L2, ubiquitous or restricted to DILP-producing cells or gut and fat body, extends lifespan. This enhanced longevity can also be observed upon adult-onset induction of Imp-L2, indicating it is not attributable to developmental changes. Our findings point to the possibility that an IGFBP or a related protein, such as IGFBP7, plays a role in mammalian aging.

Published
2011

15. Screening for colorectal cancer in Italy: 2011-2012 survey

Author

Zorzi, Manuel, Da Re, Filippo, Mantellini, Paola, Naldoni, Carlo, De Bianchi, Priscilla Sassoli, Senore, Carlo, Turrin, Anna, Visioli, Carmen Beatriz, Zappa, Marco, Crotta, S., Senore, C., Polizzi, S., Sartori, M., Alibrandi, M. P., Germinetti, F., Bestagini, P., Orione, L., Miroglio, T., Faragli, G., Cereda, D., Coppola, L., Zerbi, L., Gramegna, M., Tessandri, L., Imbrogno, P., Rocca, G., Pesenti, B., Schivardi, M., Crisetig, M., Grassi, E., Speziani, F., Gola, G., Gotti, S., Dal Soldà, M., Boldori, L., Moretti, G., Ilardo, A., Ieni, A, Belloni, A., Rossetti, E., Marazza, G., Anghinoni, E., Silvestri, A., Tidone, E., Frammartino, B., Leonardo, N., Deandrea, S., Ceresa, P., Beghi, G., Lucchini, R., Acerbi, L., Lo Buono, F., Cavalieri D'Oro, L., Magenes, G., Camana, L., Cioccarelli, A. M., Fanetti, A. C., Cecconami, L., Bardelli, R., Violini, M., Sambo, F., Domenighini, S., Pieracci, G., Pertile, R., Piffer, S., Fedato, C., Franzo, A., Fabro, J., Gobbato, M., Zanier, L., Bonelli, L., Orlando, M., Vaccari, D., Franxo, A., Scotto, M., Valle, I., Ferrari Bravo, M., Sticchi, C., Maddalo, F., Pensa, F., Naldoni, C., Sassoli De Bianchi, P., Landi, P., Borciani, E., Fornari, F., Gatti, G., Zurlini, C., Zatelli, M., Maradini, F., Paterlini, L., Campari, C., Sassatelli, R., Corradini, R., Goldoni, C., Pasquini, A., Manfredi, M., Baldazzi, P., Nannini, R., Caprara, L., Carpanelli, M. C., Zoli, G., Matarese, V., Triossi, O., Serafini, M., Vitali, B., Falcini, F., Colamartini, A., Giuliani, O., Vattiato, R., Palazzi, M., Imolesi, C., Pazzi, P., Canuti, D., Casale, C., Giovanardi, M., Monticelli, G., Nicolai, C., Vivani, P., Giorgi, D., Finucci, G., Rapanà, M., Epifani, C., Abdelghani, L., Allegrini, G., Maffei, C., Turillazzi, R., Mirri, F., Ceccatelli, P., Rosati, R., Piacentini, P., Visioli, C. B., Falini, P., Amico, P., Ciabattoni, C., Giaimo, M., Prandini, S., Vinti, G., Di Marco, A., Malaspina, M., Corvetti, R., Di Furia, L., Barca, A., Baiocchi, D., Quadrino, F., Di Giacomo, M., Lattanzio, F. M., Minna, M., Di Credico, A., Pizzuti, R., Sigillito, A., Montesi, M. P., Landro, T., Giorno, A., Santino, M., Magrì, G., Ferrara, G., and Masala, R.

Subjects
Flexible sigmoidoscopy, National survey, Faecal immunochemical test, Italy, Colorectal cancer, Screening, Epidemiology, Public Health, Environmental and Occupational Health, Environmental and Occupational Health, Public Health
Published
2015

16. Applications of sampling Kantorovich operators to thermographic images for seismic engineering

Author

Cluni, F., Danilo Costarelli, Minotti, A. M., and Vinti, G.

Subjects
FOS: Computer and information sciences, Computer Vision and Pattern Recognition (cs.CV), FOS: Mathematics, Computer Science - Computer Vision and Pattern Recognition, 41A35, 46E30, 47A58, 47B38, 94A12, Numerical Analysis (math.NA), Mathematics - Numerical Analysis
Abstract

In this paper, we present some applications of the multivariate sampling Kantorovich operators $S_w$ to seismic engineering. The mathematical theory of these operators, both in the space of continuous functions and in Orlicz spaces, show how it is possible to approximate/reconstruct multivariate signals, such as images. In particular, to obtain applications for thermographic images a mathematical algorithm is developed using MATLAB and matrix calculus. The setting of Orlicz spaces is important since allow us to reconstruct not necessarily continuous signals by means of $S_w$. The reconstruction of thermographic images of buildings by our sampling Kantorovich algorithm allow us to obtain models for the simulation of the behavior of structures under seismic action. We analyze a real world case study in term of structural analysis and we compare the behavior of the building under seismic action using various models., 16 pages, 5 figures, 2 tables

Published
2014

18. Screening for colorectal cancer in Italy: 2011-2012 survey

Author

Zorzi, M., Da Re, F., Mantellini, P., Naldoni, C., Bianchi, P. S., Senore, C., Turrin, A., Visioli, C. B., Zappa, M., Crotta, S., Polizzi, S., Sartori, M., Alibrandi, M. P., Germinetti, F., Bestagini, P., Orione, L., Miroglio, T., Faragli, G., Cereda, D., Coppola, L., Zerbi, L., Gramegna, M., Tessandri, L., Imbrogno, P., Rocca, G., Pesenti, B., Schivardi, M., Crisetig, M., Grassi, E., Speziani, F., Gola, G., Gotti, S., Dal Soldà, M., Boldori, L., Moretti, G., Ilardo, A., Belloni, A., Rossetti, E., Marazza, G., Anghinoni, E., Silvestri, A., Tidone, E., Frammartino, B., Leonardo, N., Deandrea, S., Ceresa, P., Beghi, G., Lucchini, R., Acerbi, L., Lo Buono, F., Cavalieri D Oro, L., Magenes, G., Camana, L., Cioccarelli, A. M., Fanetti, A. C., Cecconami, L., Bardelli, R., Violini, M., Sambo, F., Domenighini, S., Pieracci, G., Pertile, R., Piffer, S., Fedato, C., Franzo, A., Fabro, J., Gobbato, M., Zanier, L., Bonelli, L., Orlando, M., Vaccari, D., Franxo, A., Scotto, M., Valle, I., Ferrari Bravo, M., Sticchi, C., Maddalo, F., Pensa, F., Sassoli Bianchi, P., Landi, P., Borciani, E., Fornari, F., Gatti, G., Zurlini, C., Zatelli, M., Maradini, F., Paterlini, L., Cinzia Campari, Sassatelli, R., Corradini, R., Goldoni, C., Pasquini, A., Manfredi, M., Baldazzi, P., Nannini, R., Caprara, L., Carpanelli, M. C., Zoli, G., Matarese, V., Triossi, O., Serafini, M., Vitali, B., Falcini, F., Colamartini, A., Giuliani, O., Vattiato, R., Palazzi, M., Imolesi, C., Pazzi, P., Canuti, D., Casale, C., Giovanardi, M., Monticelli, G., Nicolai, C., Vivani, P., Giorgi, D., Finucci, G., Rapanà, M., Epifani, C., Abdelghani, L., Allegrini, G., Maffei, C., Turillazzi, R., Mirri, F., Ceccatelli, P., Rosati, R., Piacentini, P., Falini, P., Amico, P., Ciabattoni, C., Giaimo, M., Prandini, S., Vinti, G., Di Marco, A., Malaspina, M., Corvetti, R., Di Furia, L., Barca, A., Baiocchi, D., Quadrino, F., Di Giacomo, M., Lattanzio, F. M., Minna, M., Di Credico, A., Pizzuti, R., Sigillito, A., Montesi, M. P., Landro, T., Giorno, A., Santino, M., Magrì, G., Ferrara, G., and Masala, R.

19. Approximation in variation by homothetic operators in multidimensional setting

Author

Laura Angeloni and Vinti, G.

Subjects
Mathematics::Functional Analysis, multidimensional phi-variation, Homothetic operators, multidimensional phi-variation, rate of approximation, Lipschitz classes, Applied Mathematics, Lipschitz classes, rate of approximation, Homothetic operators, 26B30, 41A25, 26A45, Analysis, 41A35, 47G10
Abstract

This paper deals with approximation problems in a multidimensional setting for a family of convolution integral operators of homothetic type of the form $$ (T_wf)({s}) = \int_{\mathcal R^N} K_w ({ t}) f({ st}) \,d{ t},~~w>0,~ { s} \in \mathcal R^N; $$ here $\{K_w\}_{w>0}$ are approximate indentities, $\mathcal R:=\mathbb R^+_0$, and $f$ belongs to $BV^{\varphi}(\mathcal R^N)$, the space of functions with bounded $\varphi$-variation on $\mathcal R^N$. The main result of the paper establishes that, if $f$ is $\varphi$-absolutely continuous, there exists $\mu >0$ such that $$ V^{\varphi}[\mu(T_w f-f)]\longrightarrow 0,\ \ \hbox{as}\ w\rightarrow +\infty, $$ where $V^{\varphi}$ denotes the multidimensional $\varphi$-variation introduced in [8]. The rate of approximation is also investigated, by means of suitable Lipschitz classes.

21. Screening for colorectal cancer in Italy: 2011-2012 survey

Author

Zorzi, M., Da Re, F., Mantellini, P., Naldoni, C., Bianchi, P. S., Senore, C., Turrin, A., Visioli, C. B., Zappa, M., Crotta, S., Polizzi, S., Sartori, M., Alibrandi, M. P., Germinetti, F., Bestagini, P., Orione, L., Miroglio, T., Faragli, G., danilo Cereda, Coppola, L., Zerbi, L., Gramegna, M., Tessandri, L., Imbrogno, P., Rocca, G., Pesenti, B., Schivardi, M., Crisetig, M., Grassi, E., Speziani, F., Gola, G., Gotti, S., Dal Soldà, M., Boldori, L., Moretti, G., Ilardo, A., Belloni, A., Rossetti, E., Marazza, G., Anghinoni, E., Silvestri, A., Tidone, E., Frammartino, B., Leonardo, N., Deandrea, S., Ceresa, P., Beghi, G., Lucchini, R., Acerbi, L., Lo Buono, F., Cavalieri D Oro, L., Magenes, G., Camana, L., Cioccarelli, A. M., Fanetti, A. C., Cecconami, L., Bardelli, R., Violini, M., Sambo, F., Domenighini, S., Pieracci, G., Pertile, R., Piffer, S., Fedato, C., Franzo, A., Fabro, J., Gobbato, M., Zanier, L., Bonelli, L., Orlando, M., Vaccari, D., Franxo, A., Scotto, M., Valle, I., Ferrari Bravo, M., Sticchi, C., Maddalo, F., Pensa, F., Sassoli Bianchi, P., Landi, P., Borciani, E., Fornari, F., Gatti, G., Zurlini, C., Zatelli, M., Maradini, F., Paterlini, L., Campari, C., Sassatelli, R., Corradini, R., Goldoni, C., Pasquini, A., Manfredi, M., Baldazzi, P., Nannini, R., Caprara, L., Carpanelli, M. C., Zoli, G., Matarese, V., Triossi, O., Serafini, M., Vitali, B., Falcini, F., Colamartini, A., Giuliani, O., Vattiato, R., Palazzi, M., Imolesi, C., Pazzi, P., Canuti, D., Casale, C., Giovanardi, M., Monticelli, G., Nicolai, C., Vivani, P., Giorgi, D., Finucci, G., Rapanà, M., Epifani, C., Abdelghani, L., Allegrini, G., Maffei, C., Turillazzi, R., Mirri, F., Ceccatelli, P., Rosati, R., Piacentini, P., Falini, P., Amico, P., Ciabattoni, C., Giaimo, M., Prandini, S., Vinti, G., Di Marco, A., Malaspina, M., Corvetti, R., Di Furia, L., Barca, A., Baiocchi, D., Quadrino, F., Di Giacomo, M., Lattanzio, F. M., Minna, M., Di Credico, A., Pizzuti, R., Sigillito, A., Montesi, M. P., Landro, T., Giorno, A., Santino, M., Magrì, G., Ferrara, G., and Masala, R.

23. Detection of thermal bridges from thermographic images by means of image processing approximation algorithms

Author

Gianluca Vinti, Danilo Costarelli, Marco Seracini, Francesco Asdrubali, Francesco Bianchi, Giorgio Baldinelli, Antonella Rotili, Asdrubali, F., Baldinelli, G., Bianchi, F., Costarelli, D., Rotili, A., Seracini, M., and Vinti, G.

Subjects
Approximation results, Sampling Kantorovich operatorsApproximation resultsThermographic imagesImage processingThermal bridges, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Thermal bridges, Image processing, 010103 numerical & computational mathematics, 01 natural sciences, Thermal bridge, Sampling (signal processing), Approximation results, Image processing, Sampling Kantorovich operators, Thermal bridges, Thermographic images, Computational Mathematics, Applied Mathematics, Histogram, Digital image processing, Computer vision, 0101 mathematics, Mathematics, business.industry, Applied Mathematics, 010102 general mathematics, Sampling Kantorovich operators, Computational mathematics, Approximation algorithm, Thermographic images, Thresholding, Computational Mathematics, Computer Science::Computer Vision and Pattern Recognition, Artificial intelligence, business
Abstract

In this paper, we develop a procedure for the detection of the contours of thermal bridges from thermographic images, in order to study the energy performance of buildings. Two main steps of the above method are: the enhancement of the thermographic images by an optimized version of the mathematical algorithm for digital image processing based on the theory of sampling Kantorovich operators, and the application of a suitable thresholding based on the analysis of the histogram of the enhanced thermographic images. Finally, an improvement of the parameter defining the thermal bridge is obtained.

Published
2018
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24. WEEE Treatment in Developing Countries: Environmental Pollution and Health Consequences—An Overview

Author

Maria Isabel Dias, Giovanni Vinti, Vincenzo Belgiorno, Aleksander Jandric, Stefan Salhofer, Mentore Vaccari, Alessandra Cesaro, Vaccari, M., Vinti, G., Cesaro, A., Belgiorno, V., Salhofer, S., Dias, M. I., and Jandric, A.

Subjects
metalloids, organic pollutants, 020209 energy, Health, Toxicology and Mutagenesis, lcsh:Medicine, Developing country, enrichment factor, Environmental pollution, Review, 02 engineering and technology, Health protection, 010501 environmental sciences, 01 natural sciences, Electronic Waste, Electronic equipment, Waste Management, Environmental protection, metalloid, 0202 electrical engineering, electronic engineering, information engineering, Humans, Developing regions, heavy metals, Developing Countries, 0105 earth and related environmental sciences, Pollutant, Health consequences, e-waste, lcsh:R, Public Health, Environmental and Occupational Health, Technological evolution, heavy metal, health impact, informal treatment, Business, environmental pollution
Abstract

In the last few decades, the rapid technological evolution has led to a growing generation of waste electrical and electronic equipment (WEEE). Not rarely, it has been exported from industrialized to developing countries, where it represents a secondary source of valuable materials such as gold, copper, and silver. The recycling of WEEE is often carried out without any environmental and health protection. This paper reviews recent literature dealing with the informal treatment of WEEE in developing regions, gathering and analyzing data on concentration of both inorganic and organic pollutants in the environment. Open burning practices are revealed as most polluting ‘technology’, followed by mechanical treatment and leaching. Significant levels of pollutants have been detected in human bodies, both children and adults, working in or living in areas with informal WEEE treatment.

Published
2019
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