5,647 results on '"Tebaldi A."'
Search Results
2. Arc-Length-Based Warping for Robot Skill Synthesis from Multiple Demonstrations
- Author
-
Braglia, Giovanni, Tebaldi, Davide, Lazzaretti, André Eugenio, and Biagiotti, Luigi
- Subjects
Computer Science - Robotics - Abstract
In robotics, Learning from Demonstration (LfD) aims to transfer skills to robots by using multiple demonstrations of the same task. These demonstrations are recorded and processed to extract a consistent skill representation. This process typically requires temporal alignment through techniques such as Dynamic Time Warping (DTW). In this paper, we introduce a novel algorithm, named Spatial Sampling (SS), specifically designed for robot trajectories, that enables time-independent alignment of the trajectories by providing an arc-length parametrization of the signals. This approach eliminates the need for temporal alignment, enhancing the accuracy and robustness of skill representation. Specifically, we show that large time shifts in the demonstrated trajectories can introduce uncertainties in the synthesis of the final trajectory, which alignment in the arc-length domain can drastically reduce, in comparison with various state-of-the-art time-based signal alignment algorithms. To this end, we built a custom publicly available dataset of robot recordings to test real-world trajectories., Comment: 8 pages, 8 figures
- Published
- 2024
3. The Power-Oriented Graphs Modeling Technique: From the Fundamental Principles to the Systematic, Step-by-Step Modeling of Complex Physical Systems
- Author
-
Tebaldi, Davide and Zanasi, Roberto
- Subjects
Electrical Engineering and Systems Science - Systems and Control - Abstract
Modeling physical systems is an essential skill for a control engineer, since it enables to achieve a deep understanding of their dynamic behavior and, consequently, the development of effective control strategies. The first part of this article provides a tutorial description of the fundamental principles and properties of the Power-Oriented Graphs (POG) modeling technique. Various case studies in different energetic domains are then presented to consolidate the fundamental principles, each highlighting different features of the POG modeling technique. The latter is then compared with the other two main graphical modeling techniques available in the literature, namely Bond Graph (BG) and Energetic Macroscopic Representation (EMR). The second part of this article assumes once again a tutorial nature, in order to introduce the new Fast Modeling POG (FMPOG) procedure. The FMPOG, which operates in the POG framework, is a methodical step-by-step procedure that enables the readers to quickly derive the power-oriented graphical model of physical systems starting from their schematics. From the power-oriented graphical model, the state-space model can then be directly determined. To ensure the FMPOG procedure is easily usable by the entire community, we apply it to three examples in different energetic domains in this article, guiding the reader step-by-step through the derivation of the physical systems models. A freely available Matlab/Simulink program is provided in a repository, allowing the users to automatically apply the FMPOG procedure to various classes of physical systems. This program allows to convert the physical systems schematics into the corresponding POG block schemes and, ultimately, into the state-space mathematical models.
- Published
- 2024
4. DiffESM: Conditional Emulation of Temperature and Precipitation in Earth System Models with 3D Diffusion Models
- Author
-
Bassetti, Seth, Hutchinson, Brian, Tebaldi, Claudia, and Kravitz, Ben
- Subjects
Physics - Atmospheric and Oceanic Physics ,Computer Science - Machine Learning ,Computer Science - Neural and Evolutionary Computing ,Physics - Geophysics - Abstract
Earth System Models (ESMs) are essential for understanding the interaction between human activities and the Earth's climate. However, the computational demands of ESMs often limit the number of simulations that can be run, hindering the robust analysis of risks associated with extreme weather events. While low-cost climate emulators have emerged as an alternative to emulate ESMs and enable rapid analysis of future climate, many of these emulators only provide output on at most a monthly frequency. This temporal resolution is insufficient for analyzing events that require daily characterization, such as heat waves or heavy precipitation. We propose using diffusion models, a class of generative deep learning models, to effectively downscale ESM output from a monthly to a daily frequency. Trained on a handful of ESM realizations, reflecting a wide range of radiative forcings, our DiffESM model takes monthly mean precipitation or temperature as input, and is capable of producing daily values with statistical characteristics close to ESM output. Combined with a low-cost emulator providing monthly means, this approach requires only a small fraction of the computational resources needed to run a large ensemble. We evaluate model behavior using a number of extreme metrics, showing that DiffESM closely matches the spatio-temporal behavior of the ESM output it emulates in terms of the frequency and spatial characteristics of phenomena such as heat waves, dry spells, or rainfall intensity., Comment: Accepted for publication in Journal of Advances in Modeling Earth Systems
- Published
- 2024
5. Model-Based Adaptive Control of Modular Multilevel Converters
- Author
-
Tebaldi, Davide and Zanasi, Roberto
- Subjects
Electrical Engineering and Systems Science - Systems and Control ,Mathematics - Dynamical Systems ,Mathematics - Optimization and Control - Abstract
Electrical power conversions are common in a large variety of engineering applications. With reference to AC/DC and DC/AC power conversions, a strong research interest resides in multilevel converters, thanks to the many advantages they provide over standard two-level converters. In this paper, we first provide a power-oriented model of Modular Multilevel Converters (MMCs), followed by a detailed harmonic analysis. The model is given in the form of a block scheme that can be directly implemented in the Matlab/Simulink environment. The performed harmonic analysis gives a deep and exact understanding of the different terms affecting the evolution of the voltage trajectories in the upper and lower arms of the converter. Next, we propose a new model-based adaptive control scheme for MMCs. The proposed control allows to determine the optimal average capacitor voltages reference in real-time, thus allowing to properly track the desired load current while minimizing the harmonic content in the generated load current itself.
- Published
- 2024
- Full Text
- View/download PDF
6. Diffusion-Based Joint Temperature and Precipitation Emulation of Earth System Models
- Author
-
Christensen, Katie, Otto, Lyric, Bassetti, Seth, Tebaldi, Claudia, and Hutchinson, Brian
- Subjects
Physics - Atmospheric and Oceanic Physics ,Computer Science - Machine Learning ,Physics - Geophysics - Abstract
Earth system models (ESMs) are the principal tools used in climate science to generate future climate projections under various atmospheric emissions scenarios on a global or regional scale. Generative deep learning approaches are suitable for emulating these tools due to their computational efficiency and ability, once trained, to generate realizations in a fraction of the time required by ESMs. We extend previous work that used a generative probabilistic diffusion model to emulate ESMs by targeting the joint emulation of multiple variables, temperature and precipitation, by a single diffusion model. Joint generation of multiple variables is critical to generate realistic samples of phenomena resulting from the interplay of multiple variables. The diffusion model emulator takes in the monthly mean-maps of temperature and precipitation and produces the daily values of each of these variables that exhibit statistical properties similar to those generated by ESMs. Our results show the outputs from our extended model closely resemble those from ESMs on various climate metrics including dry spells and hot streaks, and that the joint distribution of temperature and precipitation in our sample closely matches those of ESMs., Comment: Presentation at Tackling Climate Change with Machine Learning, ICLR 2024
- Published
- 2024
7. Analysis of the perception of doctors of the Unified Health System about the use of teleconsultation in Campo Grande-MS, Brazil
- Author
-
Lima de Menezes, Leonardo, Castro de Souza, Maria Isabel de, Bullia da Fonseca Simas, Keith, Mueller, Vanessa, Santos Guimaraes, Emilene dos, Cardoso de Castro Berry, Maria, and Tebaldi Marques, David
- Published
- 2024
- Full Text
- View/download PDF
8. Phase-free Dynamic Movement Primitives Applied to Kinesthetic Guidance in Robotic Co-manipulation Tasks
- Author
-
Braglia, Giovanni, Tebaldi, Davide, and Biagiotti, Luigi
- Subjects
Computer Science - Robotics - Abstract
Whenever a robotic task needs to be defined and adapted based on a reference motion, Dynamic Movement Primitives (DMP) represent a standard and efficient method for encoding it. The nominal trajectory is typically obtained through a Programming by Demonstration (PbD) approach, where the robot is taught a specific task through kinesthetic guidance. Subsequently, the motion is reproduced by the manipulator in terms of both geometric path and timing law. The basic approach for modifying the duration of the execution involves adjusting a time constant characterizing the model. On the contrary, the goal of this paper is to achieve a complete decoupling between the geometric information of the task and the timing law governing the execution, thanks to a new spatial sampling algorithm. This leads to a new DMP concept called Geometric DMP (GDMP), which exhibits the property of being phase-free since the phase variable is no longer constrained to the demonstration timing law. GDMP open up to a variety of applications, including task duration optimization subject to velocity and acceleration constraints and human-in-the-loop applications in co-manipulation tasks. With reference to the latter application, a co-manipulation activity where the robot assists the humans in reproducing simple rehabilitation tasks is considered in this paper as a case study. A custom phase law is designed and the system passivity and stability analyses are carried out. The conclusions drawn through the system stability analysis are validated by the proposed experimental results., Comment: 15 pages, 17 figures
- Published
- 2024
9. Safety and efficacy of narsoplimab in pediatric and adult patients with transplant-associated thrombotic microangiopathy: a real-world experience
- Author
-
Castelli, Marta, Micò, Maria Caterina, Grassi, Anna, Algarotti, Alessandra, Lussana, Federico, Finazzi, Maria Chiara, Rambaldi, Benedetta, Pavoni, Chiara, Rizzuto, Giuliana, Tebaldi, Paola, Vendemini, Francesca, Verna, Marta, Bonanomi, Sonia, Biondi, Andrea, Balduzzi, Adriana, Rambaldi, Alessandro, and Gotti, Giacomo
- Published
- 2024
- Full Text
- View/download PDF
10. The need for carbon-emissions-driven climate projections in CMIP7
- Author
-
B. M. Sanderson, B. B. B. Booth, J. Dunne, V. Eyring, R. A. Fisher, P. Friedlingstein, M. J. Gidden, T. Hajima, C. D. Jones, C. G. Jones, A. King, C. D. Koven, D. M. Lawrence, J. Lowe, N. Mengis, G. P. Peters, J. Rogelj, C. Smith, A. C. Snyder, I. R. Simpson, A. L. S. Swann, C. Tebaldi, T. Ilyina, C.-F. Schleussner, R. Séférian, B. H. Samset, D. van Vuuren, and S. Zaehle
- Subjects
Geology ,QE1-996.5 - Abstract
Previous phases of the Coupled Model Intercomparison Project (CMIP) have primarily focused on simulations driven by atmospheric concentrations of greenhouse gases (GHGs), for both idealized model experiments and climate projections of different emissions scenarios. We argue that although this approach was practical to allow parallel development of Earth system model simulations and detailed socioeconomic futures, carbon cycle uncertainty as represented by diverse, process-resolving Earth system models (ESMs) is not manifested in the scenario outcomes, thus omitting a dominant source of uncertainty in meeting the Paris Agreement. Mitigation policy is defined in terms of human activity (including emissions), with strategies varying in their timing of net-zero emissions, the balance of mitigation effort between short-lived and long-lived climate forcers, their reliance on land use strategy, and the extent and timing of carbon removals. To explore the response to these drivers, ESMs need to explicitly represent complete cycles of major GHGs, including natural processes and anthropogenic influences. Carbon removal and sequestration strategies, which rely on proposed human management of natural systems, are currently calculated in integrated assessment models (IAMs) during scenario development with only the net carbon emissions passed to the ESM. However, proper accounting of the coupled system impacts of and feedback on such interventions requires explicit process representation in ESMs to build self-consistent physical representations of their potential effectiveness and risks under climate change. We propose that CMIP7 efforts prioritize simulations driven by CO2 emissions from fossil fuel use and projected deployment of carbon dioxide removal technologies, as well as land use and management, using the process resolution allowed by state-of-the-art ESMs to resolve carbon–climate feedbacks. Post-CMIP7 ambitions should aim to incorporate modeling of non-CO2 GHGs (in particular, sources and sinks of methane and nitrous oxide) and process-based representation of carbon removal options. These developments will allow three primary benefits: (1) resources to be allocated to policy-relevant climate projections and better real-time information related to the detectability and verification of emissions reductions and their relationship to expected near-term climate impacts, (2) scenario modeling of the range of possible future climate states including Earth system processes and feedbacks that are increasingly well-represented in ESMs, and (3) optimal utilization of the strengths of ESMs in the wider context of climate modeling infrastructure (which includes simple climate models, machine learning approaches and kilometer-scale climate models).
- Published
- 2024
- Full Text
- View/download PDF
11. Uncertainty-informed selection of CMIP6 Earth system model subsets for use in multisectoral and impact models
- Author
-
A. Snyder, N. Prime, C. Tebaldi, and K. Dorheim
- Subjects
Science ,Geology ,QE1-996.5 ,Dynamic and structural geology ,QE500-639.5 - Abstract
Earth system models (ESMs) and general circulation models (GCMs) are heavily used to provide inputs to sectoral impact and multisector dynamic models, which include representations of energy, water, land, economics, and their interactions. Therefore, representing the full range of model uncertainty, scenario uncertainty, and interannual variability that ensembles of these models capture is critical to the exploration of the future co-evolution of the integrated human–Earth system. The pre-eminent source of these ensembles has been the Coupled Model Intercomparison Project (CMIP). With more modeling centers participating in each new CMIP phase, the size of the model archive is rapidly increasing, which can be intractable for impact modelers to effectively utilize due to computational constraints and the challenges of analyzing large datasets. In this work, we present a method to select a subset of the latest phase, CMIP6, featuring models for use as inputs to a sectoral impact or multisector dynamics models, while prioritizing preservation of the range of model uncertainty, scenario uncertainty, and interannual variability in the full CMIP6 ensemble results. This method is intended to help impact modelers select climate information from the CMIP archive efficiently for use in downstream models that require global coverage of climate information. This is particularly critical for large-ensemble experiments of multisector dynamic models that may be varying additional features beyond climate inputs in a factorial design, thus putting constraints on the number of climate simulations that can be used. We focus on temperature and precipitation outputs of CMIP6 models, as these are two of the most used variables among impact models, and many other key input variables for impacts are at least correlated with one or both of temperature and precipitation (e.g., relative humidity). Besides preserving the multi-model ensemble variance characteristics, we prioritize selecting CMIP6 models in the subset that preserve the very likely distribution of equilibrium climate sensitivity values as assessed by the latest Intergovernmental Panel on Climate Change (IPCC) report. This approach could be applied to other output variables of climate models and, possibly when combined with emulators, offers a flexible framework for designing more efficient experiments on human-relevant climate impacts. It can also provide greater insight into the properties of existing CMIP6 models.
- Published
- 2024
- Full Text
- View/download PDF
12. Privatizing Creation: Neoliberal Creativity in the Language Classroom
- Author
-
Catherine Tebaldi
- Abstract
Although often seen as places of culture, cultivation and creativity, language courses borrow the language of creativity for test-centered practices. Research in sociolinguistics and linguistic anthropology has long recognized language courses as sites for the legitimation of neoliberal ideals that emphasize language as global, individual, and economic, human capital for the global market. Yet research in education often focuses on language education as building student identities, ignoring how it prepares students for participation in an affluent 'creative class.' This paper aims to bring a more critical lens on discourses of creativity in the classroom. It explores how neoliberal ideology is realized in teacher development literature on creative management, and it investigates how this commercial creativity affects the language curriculum and assessment in a New England High School, ending with a call to a more critical, communal creativity.
- Published
- 2024
- Full Text
- View/download PDF
13. Circulating cell-free and extracellular vesicles-derived microRNA as prognostic biomarkers in patients with early-stage NSCLC: results from RESTING study
- Author
-
Petracci, Elisabetta, Pasini, Luigi, Urbini, Milena, Felip, Enriqueta, Stella, Franco, Davoli, Fabio, Salvi, Maurizio, Beau-Faller, Michele, Tebaldi, Michela, Azzali, Irene, Canale, Matteo, Solli, Piergiorgio, Lai, Giulia, Amat, Ramon, Carbonell, Caterina, Falcoz, Pierre-Emmanuel, Martinez-Marti, Alex, Pencreach, Erwan, Delmonte, Angelo, Crinò, Lucio, and Ulivi, Paola
- Published
- 2024
- Full Text
- View/download PDF
14. Scenarios in IPCC assessments: lessons from AR6 and opportunities for AR7
- Author
-
Pirani, Anna, Fuglestvedt, Jan S., Byers, Edward, O’Neill, Brian, Riahi, Keywan, Lee, June-Yi, Marotzke, Jochem, Rose, Steven K., Schaeffer, Roberto, and Tebaldi, Claudia
- Published
- 2024
- Full Text
- View/download PDF
15. Optimal order execution under price impact: a hybrid model
- Author
-
Di Giacinto, Marina, Tebaldi, Claudio, and Wang, Tai-Ho
- Published
- 2024
- Full Text
- View/download PDF
16. DiffESM: Conditional Emulation of Earth System Models with Diffusion Models
- Author
-
Bassetti, Seth, Hutchinson, Brian, Tebaldi, Claudia, and Kravitz, Ben
- Subjects
Physics - Atmospheric and Oceanic Physics ,Computer Science - Machine Learning ,Computer Science - Neural and Evolutionary Computing ,Physics - Geophysics - Abstract
Earth System Models (ESMs) are essential tools for understanding the impact of human actions on Earth's climate. One key application of these models is studying extreme weather events, such as heat waves or dry spells, which have significant socioeconomic and environmental consequences. However, the computational demands of running a sufficient number of simulations to analyze the risks are often prohibitive. In this paper we demonstrate that diffusion models -- a class of generative deep learning models -- can effectively emulate the spatio-temporal trends of ESMs under previously unseen climate scenarios, while only requiring a small fraction of the computational resources. We present a diffusion model that is conditioned on monthly averages of temperature or precipitation on a $96 \times 96$ global grid, and produces daily values that are both realistic and consistent with those averages. Our results show that the output from our diffusion model closely matches the spatio-temporal behavior of the ESM it emulates in terms of the frequency of phenomena such as heat waves, dry spells, or rainfall intensity., Comment: Presented at Tackling Climate Change with Machine Learning, ICLR 2023
- Published
- 2023
17. Reading hidden writing and drawings on papyrus using speckle optical technique and multispectral images
- Author
-
Buffarini, L., Rabal, H. J., Cap, N. L., Grumel, E. E., Trivi, M., and Tebaldi, M.
- Subjects
Electrical Engineering and Systems Science - Image and Video Processing ,Physics - Optics - Abstract
We carried out an experimental set-up for reading a hidden drawing under papyrus using an optical technique based on the speckle phenomenon that is observed when a rough surface is illuminated by laser light. We propose the use of several wavelengths of light illumination and adaptive algorithms to process the speckle images. We employ a set of filters to produce better discrimination of the results as visually judged. This approach is a cheap and relatively simple non-destructive and non-invasive procedure that could be extended to other painted objects or subsurface hidings of archaeological interest, as well as, to other dynamic speckle experiments., Comment: 18 pages
- Published
- 2023
18. Circulating cell-free and extracellular vesicles-derived microRNA as prognostic biomarkers in patients with early-stage NSCLC: results from RESTING study
- Author
-
Elisabetta Petracci, Luigi Pasini, Milena Urbini, Enriqueta Felip, Franco Stella, Fabio Davoli, Maurizio Salvi, Michele Beau-Faller, Michela Tebaldi, Irene Azzali, Matteo Canale, Piergiorgio Solli, Giulia Lai, Ramon Amat, Caterina Carbonell, Pierre-Emmanuel Falcoz, Alex Martinez-Marti, Erwan Pencreach, Angelo Delmonte, Lucio Crinò, and Paola Ulivi
- Subjects
Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Background Factors to accurately stratify patients with early-stage non-small cell lung cancer (NSCLC) in different prognostic groups are still needed. This study aims to investigate 1) the prognostic potential of circulating cell-free (CF) and extracellular vesicles (EVs)-derived microRNA (miRNAs), and 2) their added value with respect to known prognostic factors (PFs). Methods The RESTING study is a multicentre prospective observational cohort study on resected stage IA-IIIA patients with NSCLC. The primary end-point was disease-free survival (DFS), and the main analyses were carried out separately for CF- and EV-miRNAs. CF- and EV-miRNAs were isolated from plasma, and miRNA-specific libraries were prepared and sequenced. To reach the study aims, three statistical models were specified: one using the miRNA data only (Model 1); one using both miRNAs and known PFs (age, gender, and pathological stage) (Model 2), and one using the PFs alone (Model 3). Five-fold cross-validation (CV) was used to assess the predictive performance of each. Standard Cox regression and elastic net regularized Cox regression were used. Results A total of 222 patients were enrolled. The median follow-up time was 26.3 (95% CI 25.4–27.6) months. From Model 1, three CF-miRNAs and 21 EV-miRNAs were associated with DFS. In Model 2, two CF-miRNAs (miR-29c-3p and miR-877-3p) and five EV-miRNAs (miR-181a-2-3p, miR-182-5p, miR-192-5p, miR-532-3p and miR-589-5p) remained associated with DFS. From pathway enrichment analysis, TGF-beta and NOTCH were the most involved pathways. Conclusion This study identified promising prognostic CF- and EV-miRNAs that could be used as a non-invasive, cost-effective tool to aid clinical decision-making. However, further evaluation of the obtained miRNAs in an external cohort of patients is warranted.
- Published
- 2024
- Full Text
- View/download PDF
19. Hector V3.2.0: functionality and performance of a reduced-complexity climate model
- Author
-
K. Dorheim, S. Gering, R. Gieseke, C. Hartin, L. Pressburger, A. N. Shiklomanov, S. J. Smith, C. Tebaldi, D. L. Woodard, and B. Bond-Lamberty
- Subjects
Geology ,QE1-996.5 - Abstract
Hector is an open-source reduced-complexity climate–carbon cycle model that models critical Earth system processes on a global and annual basis. Here, we present an updated version of the model, Hector V3.2.0 (hereafter Hector V3), and document its new features, implementation of new science, and performance. Significant new features include permafrost thaw, a reworked energy balance submodel, and updated parameterizations throughout. Hector V3 results are in good general agreement with historical observations of atmospheric CO2 concentrations and global mean surface temperature, and the future temperature projections from Hector V3 are consistent with more complex Earth system model output data from the sixth phase of the Coupled Model Intercomparison Project. We show that Hector V3 is a flexible, performant, robust, and fully open-source simulator of global climate changes. We also note its limitations and discuss future areas for improvement and research with respect to the model's scientific, stakeholder, and educational priorities.
- Published
- 2024
- Full Text
- View/download PDF
20. Study of hygroscopic properties of the mixture of porous and non-porous materials by using optical techniques
- Author
-
Mojica Sepúlveda, Ruth D., Mendoza Herrera, Luis J., Muñoz, Mercedes, Grumel, Eduardo E., and Tebaldi, Myrian
- Published
- 2024
- Full Text
- View/download PDF
21. Nanoparticles in the Field: Sowing Innovation to Harvest a Sustainable Future
- Author
-
A. Alvin, Eliete, primary, S.M. Ribeiro, Wesley, additional, V.B. Borges, Anna, additional, C. Rosa, Rodrigo, additional, V. Silva, Marcos, additional, D. Tebaldi, Nilvanira, additional, and Christine A. Silva, Anielle, additional
- Published
- 2024
- Full Text
- View/download PDF
22. DiffESM: Conditional Emulation of Temperature and Precipitation in Earth System Models With 3D Diffusion Models
- Author
-
Seth Bassetti, Brian Hutchinson, Claudia Tebaldi, and Ben Kravitz
- Subjects
Earth system model emulation ,diffusion model ,generative model ,precipitation ,temperature ,extremes ,Physical geography ,GB3-5030 ,Oceanography ,GC1-1581 - Abstract
Abstract Earth system models (ESMs) are essential for understanding the interaction between human activities and the Earth's climate. However, the computational demands of ESMs often limit the number of simulations that can be run, hindering the robust analysis of risks associated with extreme weather events. While low‐cost climate emulators have emerged as an alternative to emulate ESMs and enable rapid analysis of future climate, many of these emulators only provide output on at most a monthly frequency. This temporal resolution is insufficient for analyzing events that require daily characterization, such as heat waves or heavy precipitation. We propose using diffusion models, a class of generative deep learning models, to effectively downscale ESM output from a monthly to a daily frequency. Trained on a handful of ESM realizations, reflecting a wide range of radiative forcings, our DiffESM model takes monthly mean precipitation or temperature as input, and is capable of producing daily values with statistical characteristics close to ESM output. Combined with a low‐cost emulator providing monthly means, this approach requires only a small fraction of the computational resources needed to run a large ensemble. We evaluate model behavior using a number of extreme metrics, showing that DiffESM closely matches the spatio‐temporal behavior of the ESM output it emulates in terms of the frequency and spatial characteristics of phenomena such as heat waves, dry spells, or rainfall intensity.
- Published
- 2024
- Full Text
- View/download PDF
23. The Effect of a Bio-Oil Additive on the Rutting and Cracking Properties of High RAP Asphalt Mixtures
- Author
-
Monticelli, R., Bisanti, F., Romeo, E., Tebaldi, G., di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Pereira, Paulo, editor, and Pais, Jorge, editor
- Published
- 2024
- Full Text
- View/download PDF
24. The Role of Simulation-Based Optimization in Remanufacturing and Reverse Logistics: A Systematic Literature Review
- Author
-
Monferdini, Laura, Pini, Benedetta, Tebaldi, Letizia, Bigliardi, Barbara, Bottani, Eleonora, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Fera, Marcello, editor, Caterino, Mario, editor, Macchiaroli, Roberto, editor, and Pham, Duc Truong, editor
- Published
- 2024
- Full Text
- View/download PDF
25. Tick-Borne Encephalitis, Lombardy, Italy
- Author
-
Alessandra Gaffuri, Davide Sassera, Mattia Calzolari, Lucia Gibelli, Davide Lelli, Alessandra Tebaldi, Nadia Vicari, Alessandro Bianchi, Claudio Pigoli, Monica Cerioli, Luca Zandona, Giorgio Varisco, Irene Bertoletti, Paola Prati
- Subjects
Tick-borne encephalitis -- Health aspects ,Health - Abstract
Tick-borne encephalitis (TBE) is a considerable public health concern caused by the tick-borne encephalitis virus (TBEV), a member of the Flaviviridae family. This virus is classified into 5 genotypes; European, [...]
- Published
- 2024
- Full Text
- View/download PDF
26. Reacción de genotipos de maíz dulce a la pudrición bacteriana del tallo
- Author
-
Gonçalves da Silva, Isadora, Castoldi, Renata, Donizete Tebaldi, Nilvanira, Ramalho Moura, Dahis, Mascarenhas Maciel, Gabriel, Pires Jacinto, Ana Carolina, and Diniz Graciano, Patricia
- Published
- 2024
- Full Text
- View/download PDF
27. Shedding Light on Treatment Options for Coronary Vasomotor Disorders: A Systematic Review
- Author
-
Marchini, Federico, Pompei, Graziella, D’Aniello, Emanuele, Marrone, Andrea, Caglioni, Serena, Biscaglia, Simone, Campo, Gianluca, and Tebaldi, Matteo
- Published
- 2024
- Full Text
- View/download PDF
28. A consistent dataset for the net income distribution for 190 countries and aggregated to 32 geographical regions from 1958 to 2015
- Author
-
K. B. Narayan, B. C. O'Neill, S. Waldhoff, and C. Tebaldi
- Subjects
Environmental sciences ,GE1-350 ,Geology ,QE1-996.5 - Abstract
Data on income distributions within and across countries are becoming increasingly important for informing analysis of income inequality and understanding the distributional consequences of climate change. While datasets on income distribution collected from household surveys are available for multiple countries, these datasets often do not represent the same concept of inequality (or income concept) and therefore make comparisons across countries, over time and across datasets difficult. Here, we present a consistent dataset of income distributions across 190 countries from 1958 to 2015 measured in terms of net income. We complement the observed values in this dataset with values imputed from a summary measure of the income distribution, specifically the Gini coefficient. For the imputation, we use a recently developed nonparametric principal-component-based approach that shows an excellent fit to data on income distributions compared to other approaches. We also present another version of this dataset aggregated from the country level to 32 geographical regions. Our dataset is developed for the purpose of calibrating models such as integrated human–Earth system models with detailed data on income distributions. This dataset will enable more robust analysis of income distribution at multiple scales. The latest version of our data are available on Zenodo: https://doi.org/10.5281/zenodo.7093997 (Narayan et al., 2022b).
- Published
- 2024
- Full Text
- View/download PDF
29. Determination of Thickness-dependent Damping Constant and Plasma Frequency for Ultrathin Ag and Au Films: Nanoscale Dielectric Function
- Author
-
Herrera, Luis J. Mendoza, Tebaldi, Myrian C., Scaffardi, Lucía B., and Schinca, Daniel C.
- Subjects
Condensed Matter - Mesoscale and Nanoscale Physics - Abstract
There is an ever increasing interest in the development of plasmonic 2D nanomaterials, with widespread applications in optoelectronics, high resolution microscopy, imaging and sensing, among others. With the current ability of ultrathin noble metal film deposition down to a few monolayers in thickness, there is a need for an analytical expression of the thickness dependent complex dielectric function for predicting optical properties for arbitrary thicknesses. The free and bound electron contributions to the dielectric function are dealt with independently, since their influences affect separate wavelengths ranges. The former is dealt within the Drude model framework for large wavelengths with appropriately addressed damping constant and plasma frequency parameters to account for thickness dependence. Applying our previously developed method, we determine these parameters for specific film thicknesses, based on refractive index experimental values for Ag and Au thin films. Fitting separately each one of these parameters allowed us to find an analytical expression for their dependence on arbitrary film thickness and consequently for the free electron contribution. Concerning bound electrons, it is seen that its contribution for small wavelengths is the same for all analyzed thicknesses and may be set equal to the bulk bound contribution. Taking all these facts into account, the complex dielectric function can be rewritten analytically, in terms of the bulk dielectric function plus corrective film thickness dependent terms. In particular, the fitting process for the damping constant allows us to determine that the electron scattering at the film boundary is mainly diffusive (inelastic) for both silver and gold thin films. It is also shown that, in accordance with theoretical studies, plasma frequency shows a red shift as the film thickness decreases.
- Published
- 2022
- Full Text
- View/download PDF
30. In vitro control of Fusarium oxysporum f. sp. lycopersici Race 3 by the innovative formulation consisting of a thymol-based emulsion, and evaluation of its effects on the vigor of tomato seeds
- Author
-
Peccini, Luan Rezende, Bigui, Walter Cesar Celeri, Botelho, Bianca de Oliveira, Guedes, Natália Assis, Gaspari, Caroline de Souza Fontes, Melo, Davi Cardoso Aguiar de, Chaves, Kamila Ferreira, Soares, Lucas de Souza, Costa, Adilson Vidal, and Queiroz, Vagner Tebaldi de
- Published
- 2024
- Full Text
- View/download PDF
31. A randomized phase II trial of Captem or Folfiri as second-line therapy in neuroendocrine carcinomas
- Author
-
Bongiovanni, Alberto, Liverani, Chiara, Foca, Flavia, Bergamo, Francesca, Leo, Silvana, Pusceddu, Sara, Gelsomino, Fabio, Brizzi, Maria Pia, Di Meglio, Giovanni, Spada, Francesca, Tamberi, Stefano, Lolli, Ivan, Cives, Mauro, Marconcini, Riccardo, Pucci, Francesca, Berardi, Rossana, Antonuzzo, Lorenzo, Badalamenti, Giuseppe, Santini, Daniele, Recine, Federica, Vanni, Silvia, Tebaldi, Michela, Severi, Stefano, Rudnas, Britt, Nanni, Oriana, Ranallo, Nicoletta, Crudi, Laura, Calabrò, Luana, and Ibrahim, Toni
- Published
- 2024
- Full Text
- View/download PDF
32. Scenarios in IPCC assessments: lessons from AR6 and opportunities for AR7
- Author
-
Anna Pirani, Jan S. Fuglestvedt, Edward Byers, Brian O’Neill, Keywan Riahi, June-Yi Lee, Jochem Marotzke, Steven K. Rose, Roberto Schaeffer, and Claudia Tebaldi
- Subjects
Meteorology. Climatology ,QC851-999 ,Environmental sciences ,GE1-350 - Abstract
Abstract Scenarios have been an important integrating element in the Sixth Assessment Report (AR6) of the Intergovernmental Panel on Climate Change (IPCC) in the understanding of possible climate outcomes, impacts and risks, and mitigation futures. Integration supports a consistent, coherent assessment, new insights and the opportunity to address policy-relevant questions that would not be possible otherwise, for example, which impacts are unavoidable, which are reversible, what is a consistent remaining carbon budget to keep temperatures below a level and what would be a consistent route of action to achieve that goal. The AR6 builds on community frameworks that are developed to support a coherent use of scenarios across the assessment, yet their use in the assessment and the related timelines presented coordination challenges. From lessons within each Working Group (WG) assessment and the cross-WG experience, we present insights into the role of scenarios in future assessments, including the enhanced integration of impacts into scenarios, near-term information and community coordination efforts. Recommendations and opportunities are discussed for how scenarios can support strengthened consistency and policy relevance in the next IPCC assessment cycle.
- Published
- 2024
- Full Text
- View/download PDF
33. Hypertension, uncontrolled hypertension and resistant hypertension: prevalence, comorbidities and prescribed medications in 228,406 adults resident in urban areas. A population-based observational study
- Author
-
Romano, Simone, Rigon, Giulio, Albrigi, Martina, Tebaldi, Giacomo, Sartorio, Andrea, Cristin, Luca, Burrei, Giulia, Fava, Cristiano, and Minuz, Pietro
- Published
- 2023
- Full Text
- View/download PDF
34. Intracoronary physiology-guided percutaneous coronary intervention in patients with diabetes
- Author
-
Scarsini, Roberto, Tebaldi, Matteo, Rubino, Francesca, Sgreva, Sara, Vescovo, Giovanni, Barbierato, Marco, Vicerè, Andrea, Galante, Domenico, Mammone, Concetta, Lunardi, Mattia, Tavella, Domenico, Pesarini, Gabriele, Campo, Gianluca, Leone, Antonio Maria, and Ribichini, Flavio Luciano
- Published
- 2023
- Full Text
- View/download PDF
35. Optimal order execution under price impact: A hybrid model
- Author
-
Di Giacinto, Marina, Tebaldi, Claudio, and Wang, Tai-Ho
- Subjects
Quantitative Finance - Trading and Market Microstructure ,Quantitative Finance - Mathematical Finance - Abstract
In this paper we explore optimal liquidation in a market populated by a number of heterogeneous market makers that have limited inventory-carrying and risk-bearing capacity. We derive a reduced form model for the dynamic of their aggregated inventory considering a proper scaling limit. The resulting price impact profile is shown to depend on the characteristics and relative importance of their inventories. The model is flexible enough to reproduce the empirically documented power law behavior of the price impact function. For any choice of the market makers characteristics, optimal execution within this modeling approach can be recast as a linear-quadratic stochastic control problem in which the value function and the associated optimal trading rate can be obtained semi-explicitly subject to solving a differential matrix Riccati equation. Numerical simulations are conducted to illustrate the performance of the resulting optimal liquidation strategy in relation to standard benchmarks. Remarkably, they show that the increase in performance is determined by a substantial reduction of higher order moment risk.
- Published
- 2021
36. Is it possible to quantify the current resilience level of an agri-food system? A review of the literature
- Author
-
Tebaldi, Letizia and Vignali, Giuseppe
- Published
- 2023
- Full Text
- View/download PDF
37. Dickeya zeae, Pantoea ananatis, and Xanthomonas vasicola pv. vasculorum: Control with the use of nanoparticles
- Author
-
Morgana Coelho Mamede, Anielle Christine Almeida Silva, and Nilvanira Donizete Tebaldi
- Subjects
Bacterial leaf streak ,bacterial wilt ,severity ,white spot ,Zea mays ,Agriculture (General) ,S1-972 - Abstract
ABSTRACT Metal oxide nanoparticles (NPs) possess antibacterial activities and can be used for the control of phytopathogenic bacteria. The objective of this work was to evaluate the antibacterial activity of pure and doped NPs against Dickeya zeae, Pantoea ananatis, and Xanthomonas vasicola pv. vasculorum in vitro, and to assess the efficacy of preventive and curative application of zinc oxide (ZnO), nickel oxide (NiO), and silver-doped zinc oxide (ZnO:Ag) NPs for the control of white spot (WS) and bacterial leaf streak (BLS) in vivo. Bacterial growth inhibition was first evaluated by measuring the diameter of the inhibition zone formed in Petri dishes. Subsequently, the severity of WS and BLS diseases was evaluated in a greenhouse calculating the area under the disease progress curve. The in vitro antibacterial activity was not influenced by the increase in the concentration of doping elements for most NPs. ZnO NPs doped with Ag, K, and Mo; ZnOCl doped with Ag, and pure NPs (Ag2O, CuO, and NiO) showed antibacterial activity against D. zeae, P. ananatis, and X. vasicola pv. vasculorum with relatively similar inhibition zones at different concentrations. Commercial copper showed antibacterial activity only against D. zeae. NiO NPs in preventive and curative applications reduced WS and BLS severities, whereas commercial copper application increased WS severity and reduced BLS severity. The use of NPs has promising applications and further evaluation of their formulation, application form, and timing is necessary for new strategies to control the activity of phytopathogenic bacteria.
- Published
- 2024
- Full Text
- View/download PDF
38. Nanocrystals spraying interval for the control of tomato bacterial spot caused by Xanthomonas hortorum pv. gardneri
- Author
-
Ludyellen Cristina Medeiros Santos, Anielle Christine Almeida Silva, and Nilvanira Donizete Tebaldi
- Subjects
disease ,nanoparticle ,severity ,Solanum lycopersicon ,Agriculture (General) ,S1-972 ,Biotechnology ,TP248.13-248.65 - Abstract
ABSTRACT Tomato bacterial spot caused by Xanthomonas hortorum pv. gardneri triggers significant losses in crop production, and the active ingredients availability for disease control is limited. For this reason, there is a great demand for plant protection alternatives, such as the use of nanocrystals. Thus, the aim of this work was to evaluate the performance of nanocrystals spraying intervals for the control of tomato bacterial spot. Tomato plants of cv. Santa Cruz Kada were sprayed at 3-4 leaf stage under greenhouse conditions with ZnO:1Mg, ZnOCl, and ZnOCl:0.1Cu nanocrystals, copper and water. Three days later, the plants were inoculated with a bacterial suspension (109 CFU mL -1). Then, after 3, 6, 9, or 12-day intervals, the plants were sprayed with the products. The bacterial spot severity was periodically quantified as affected leaf area percentage, and the area under the disease progress curve was calculated. Nanocrystals ZnO:1Mg, ZnOCl, and ZnOCl:0.1Cu reduced the tomato bacterial spot severity when sprayed at 3- and 6-day intervals. Thus, nanocrystals may be used for the tomato bacterial spot control when sprayed at 6-day intervals, once this interval is adequate and practical for disease management.
- Published
- 2024
- Full Text
- View/download PDF
39. PLANEJAMENTO RACIONAL POR DOCKING MOLECULAR DE POTENCIAIS INIBIDORES DE SUCCINATO DESIDROGENASE
- Author
-
Morais, Pedro Alves Bezerra, primary, Ferreira, Lara Chaves de Freitas, additional, Silva, Jéssica Adalgisa Barbosa, additional, Freitas, Gabriel Scudino, additional, Costa, Adilson Vidal, additional, Queiroz, Vagner Tebaldi de, additional, and Lacerda Junior, Valdemar, additional
- Published
- 2023
- Full Text
- View/download PDF
40. Vulnerability and Management of Protected Areas from the State of Espirito Santo, Brazil
- Author
-
André Luiz Campos Tebaldi, Nilton Cesar Fiedler, and Henrique Machado Dias
- Subjects
conservation units ,management indicators ,infrastructure. ,Forestry ,SD1-669.5 - Abstract
ABSTRACT This research presents the state-of-the-art related to the management of conservation units in the State of Espirito Santo, characterizing the conditions for management and infrastructure. The analysis carried out at the units, which were created in 2009, counted on the participation of all sixteen units’ managers, considering factors inherent to the prevention and combat actions impacting the units. Results indicated that ‘Duas Bocas REBIO’ holds the best conditions for management and infrastructure (82%) and ‘RDS Concha D’ostras’, the worst (5%). ‘PARE Itaúnas’ showed the greatest deficit of staff. Regarding the availability of operational equipment, it was possible to observe that 75% of the fully protected units are operationally deficient. As for tools to combat forest fires, ‘PARE Cachoeira da Fumaça’ presented the largest deficit, with no individual protection equipment (IPE). Inadequate infrastructure (14%) and hunting (12%) are the main threats to the units. These results will subsidize the planning and management of protected areas in the State of Espirito Santo.
- Published
- 2023
- Full Text
- View/download PDF
41. Is it possible to quantify the current resilience level of an agri-food system? A review of the literature
- Author
-
Letizia Tebaldi and Giuseppe Vignali
- Subjects
Agri-food supply chain ,Resilience assessment ,Literature review ,Quantitative assessment ,Resilience metric ,Resilience model ,Nutrition. Foods and food supply ,TX341-641 ,Agricultural industries ,HD9000-9495 - Abstract
Abstract Nowadays being resilient is a requirement of all companies and more in general supply chains, as a consequence of the frequent disruptions which repeatedly affect systems and challenge markets from different sides. But how to state whether a company and its related supply chain are resilient or not? To address the present issue, a literature review was carried out on documents proposing quantitative tools or metrics for quantifying the resilience level of an agri-food supply chain, which is a specific field subjected to several threats and accordingly deserving attention. Due to the limited number of documents retrieved (i.e., 26 articles), stressing the gap to be filled in literature, mainly bibliometric analyses were performed on the sample, but contents were also deepened, resuming the different tools available at present. Results reflect the call for the development of models aiming at assessing the resilience of these systems before disruptions and non-controlled events occur; moreover, the industrial level turned out to be neglected, given the fact that all the studies deal with the farm stage (and in general agricultural activities).
- Published
- 2023
- Full Text
- View/download PDF
42. Análise Espacial de Fragmentos Florestais: Caso dos Parques Estaduais de Forno Grande e Pedra Azul, Estado do Espírito Santo
- Author
-
Ronie Silva Juvanhol, Nilton Cesar Fiedler, Alexandre Rosa dos Santos, Daiani Bernardo Pirovani, Franciane Lousada Rubini de Oliveira Louzada, Henrique Machado Dias, and André Luiz Campos Tebaldi
- Subjects
conservação da natureza ,ecologia da paisagem ,geotecnologia. ,Forestry ,SD1-669.5 - Abstract
RESUMO O objetivo foi analisar a estrutura da paisagem florestal entre duas Unidades de Conservação por meio de índices de ecologia da paisagem. O mapeamento foi obtido por digitalização de aerofoto, utilizando-se técnicas de fotointerpretação na escala 1:2500. No cálculo dos índices, foi utilizada Patch Analyst (ArcGis 9.3). Os fragmentos foram divididos em classes (muito pequeno: 5 e 10 e 100 ha). Foram calculados os índices de área, densidade, tamanho, forma, proximidade, área central (obtidos para diferentes simulações de efeito de borda: 40, 80, 100, 140 m). Encontraram-se 2.652 fragmentos, representando 42,6% de cobertura florestal. Os fragmentos muito pequenos dominam (2.201), seguidos pelos médios (216), pequenos (177) e grandes (58). Houve diferenciações em relação às classes, demonstrando que os maiores apresentam métricas que indicam boa conservação. As classes média e grande indicam a necessidade de criação de políticas públicas que incentivem a formação de corredores ecológicos entre ambas as áreas protegidas.
- Published
- 2023
- Full Text
- View/download PDF
43. The Akt/mTOR and MNK/eIF4E pathways rewire the prostate cancer translatome to secrete HGF, SPP1 and BGN and recruit suppressive myeloid cells
- Author
-
Brina, Daniela, Ponzoni, Adele, Troiani, Martina, Calì, Bianca, Pasquini, Emiliano, Attanasio, Giuseppe, Mosole, Simone, Mirenda, Michela, D’Ambrosio, Mariantonietta, Colucci, Manuel, Guccini, Ilaria, Revandkar, Ajinkya, Alajati, Abdullah, Tebaldi, Toma, Donzel, Deborah, Lauria, Fabio, Parhizgari, Nahjme, Valdata, Aurora, Maddalena, Martino, Calcinotto, Arianna, Bolis, Marco, Rinaldi, Andrea, Barry, Simon, Rüschoff, Jan Hendrik, Sabbadin, Marianna, Sumanasuriya, Semini, Crespo, Mateus, Sharp, Adam, Yuan, Wei, Grinu, Mathew, Boyle, Alexandra, Miller, Cynthia, Trotman, Lloyd, Delaleu, Nicolas, Fassan, Matteo, Moch, Holger, Viero, Gabriella, de Bono, Johann, and Alimonti, Andrea
- Published
- 2023
- Full Text
- View/download PDF
44. Centrality measures in networks
- Author
-
Bloch, Francis, Jackson, Matthew O., and Tebaldi, Pietro
- Published
- 2023
- Full Text
- View/download PDF
45. Multivariate Wold decompositions: a Hilbert A-module approach
- Author
-
Cerreia-Vioglio, Simone, Ortu, Fulvio, Severino, Federico, and Tebaldi, Claudio
- Published
- 2023
- Full Text
- View/download PDF
46. Ten-year prognostic impact of target versus non-target vessel failure after STEMI. Insight from the EXAMINATION-EXTEND trial
- Author
-
Verardi, Filippo Maria, Bujak, Kamil, Tolomeo, Paolo, Gómez-Lara, Josep, Jiménez-Díaz, Víctor, Jiménez, Marcelo, Jiménez-Quevedo, Pilar, Diletti, Roberto, Bordes, Pascual, Campo, Gianluca, Silvestro, Antonio, Maristany, Jaume, Flores, Xacobe, de Miguel-Castro, Antonio, Íñiguez, Andrés, Ielasi, Alfonso, Tespili, Maurizio, Lenzen, Mattie, Gonzalo, Nieves, Tebaldi, Matteo, Biscaglia, Simone, Vidal-Cales, Pablo, Ortega-Paz, Luis, Romaguera, Rafael, Gómez-Hospital, Joan Antoni, Serruys, Patrick W., Sabaté, Manel, and Brugaletta, Salvatore
- Published
- 2024
- Full Text
- View/download PDF
47. Impacto pronóstico a diez años del fallo del vaso diana tras un IAMCEST. Perspectivas del ensayo EXAMINATION-EXTEND
- Author
-
Verardi, Filippo Maria, Bujak, Kamil, Tolomeo, Paolo, Gómez-Lara, Josep, Jiménez-Díaz, Víctor, Jiménez, Marcelo, Jiménez-Quevedo, Pilar, Diletti, Roberto, Bordes, Pascual, Campo, Gianluca, Silvestro, Antonio, Maristany, Jaume, Flores, Xacobe, de Miguel-Castro, Antonio, Íñiguez, Andrés, Ielasi, Alfonso, Tespili, Maurizio, Lenzen, Mattie, Gonzalo, Nieves, Tebaldi, Matteo, Biscaglia, Simone, Vidal-Cales, Pablo, Ortega-Paz, Luis, Romaguera, Rafael, Gómez-Hospital, Joan Antoni, Serruys, Patrick W., Sabaté, Manel, and Brugaletta, Salvatore
- Published
- 2024
- Full Text
- View/download PDF
48. Loosely Conditioned Emulation of Global Climate Models With Generative Adversarial Networks
- Author
-
Ayala, Alexis, Drazic, Christopher, Hutchinson, Brian, Kravitz, Ben, and Tebaldi, Claudia
- Subjects
Physics - Atmospheric and Oceanic Physics ,Computer Science - Machine Learning ,Computer Science - Neural and Evolutionary Computing ,Physics - Geophysics - Abstract
Climate models encapsulate our best understanding of the Earth system, allowing research to be conducted on its future under alternative assumptions of how human-driven climate forces are going to evolve. An important application of climate models is to provide metrics of mean and extreme climate changes, particularly under these alternative future scenarios, as these quantities drive the impacts of climate on society and natural systems. Because of the need to explore a wide range of alternative scenarios and other sources of uncertainties in a computationally efficient manner, climate models can only take us so far, as they require significant computational resources, especially when attempting to characterize extreme events, which are rare and thus demand long and numerous simulations in order to accurately represent their changing statistics. Here we use deep learning in a proof of concept that lays the foundation for emulating global climate model output for different scenarios. We train two "loosely conditioned" Generative Adversarial Networks (GANs) that emulate daily precipitation output from a fully coupled Earth system model: one GAN modeling Fall-Winter behavior and the other Spring-Summer. Our GANs are trained to produce spatiotemporal samples: 32 days of precipitation over a 64x128 regular grid discretizing the globe. We evaluate the generator with a set of related performance metrics based upon KL divergence, and find the generated samples to be nearly as well matched to the test data as the validation data is to test. We also find the generated samples to accurately estimate the mean number of dry days and mean longest dry spell in the 32 day samples. Our trained GANs can rapidly generate numerous realizations at a vastly reduced computational expense, compared to large ensembles of climate models, which greatly aids in estimating the statistics of extreme events., Comment: Presented at NeurIPS 2020 Workshop Tackling Climate Change with Machine Learning
- Published
- 2021
49. Star-shaped Risk Measures
- Author
-
Castagnoli, Erio, Cattelan, Giacomo, Maccheroni, Fabio, Tebaldi, Claudio, and Wang, Ruodu
- Subjects
Economics - Theoretical Economics ,Mathematics - Functional Analysis ,Quantitative Finance - Risk Management - Abstract
In this paper monetary risk measures that are positively superhomogeneous, called star-shaped risk measures, are characterized and their properties studied. The measures in this class, which arise when the controversial subadditivity property of coherent risk measures is dispensed with and positive homogeneity is weakened, include all practically used risk measures, in particular, both convex risk measures and Value-at-Risk. From a financial viewpoint, our relaxation of convexity is necessary to quantify the capital requirements for risk exposure in the presence of liquidity risk, competitive delegation, or robust aggregation mechanisms. From a decision theoretical perspective, star-shaped risk measures emerge from variational preferences when risk mitigation strategies can be adopted by a rational decision maker.
- Published
- 2021
50. Vaccinations in Paediatric Solid Organ Transplant Candidates and Recipients
- Author
-
Valeria Casotti, Paola Stroppa, Michela Bravi, Alessandra Tebaldi, Alessandro Loglio, Mauro Viganò, Stefano Fagiuoli, and Lorenzo D’Antiga
- Subjects
vaccinations ,solid organ transplant (SOT) ,paediatric ,infections ,Medicine - Abstract
Solid organ transplant (SOT) candidates and recipients are a fragile population, in which the presence of a pre-transplant disease leading to organ insufficiency and the post-transplant immunosuppressive treatment expose them to an increased risk of infectious diseases. The best intervention to guarantee efficient prevention of infections, with optimal cost–benefit ratio, is represented by vaccination programs; however, the response to vaccines needs that the immune system maintains a good function. This is even more relevant at paediatric age, when specific immunological conditions make transplant candidates and recipients particularly vulnerable. Paediatric patients may be naïve to most infections and may have incomplete immunization status at the time of transplant listing due to their age. Moreover, the unaccomplished development of a mature immune system and the immunosuppressive regimen adopted after transplant might affect the efficacy of post-transplant vaccinations. Therefore, every effort should be made to obtain the widest vaccination coverage before the transplantation, whenever possible. This review reports the most relevant literature, providing information on the current approach to the vaccinations in paediatric SOT candidates and recipients.
- Published
- 2024
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.