Zobrazeno 1 - 10
of 10 789
pro vyhledávání: '"Portella A"'
Publikováno v:
J Sign Process Syst 95, 495-516 (2023)
The discrete cosine transform (DCT) is a central tool for image and video coding because it can be related to the Karhunen-Lo\`eve transform (KLT), which is the optimal transform in terms of retained transform coefficients and data decorrelation. In
Externí odkaz:
http://arxiv.org/abs/2410.15244
This paper presents a model-free, learning-based adaptive controller for the density tracking problem in a two-level Lindblad-Gorini-Kossakowski-Sudarshan (LGKS) quantum system. The adaptive controller is based on the continuous-time retrospective co
Externí odkaz:
http://arxiv.org/abs/2410.02882
The paper develops a singularity-free backstepping-based adaptive control for stabilizing and tracking the trajectory of a bicopter system. In the bicopter system, the inertial parameters parameterize the input map. Since the classical adaptive backs
Externí odkaz:
http://arxiv.org/abs/2409.13081
Autor:
Portella, Victor S., Harvey, Nick
We prove lower bounds on the number of samples needed to privately estimate the covariance matrix of a Gaussian distribution. Our bounds match existing upper bounds in the widest known setting of parameters. Our analysis relies on the Stein-Haff iden
Externí odkaz:
http://arxiv.org/abs/2404.17714
Extremum seeking control (ESC) constitutes a powerful technique for online optimization with theoretical guarantees for convergence to the neighborhood of the optimizer under well-understood conditions. However, ESC requires a nonconstant perturbatio
Externí odkaz:
http://arxiv.org/abs/2402.03717
This paper presents a model-based, adaptive, nonlinear controller for the bicopter stabilization and trajectory-tracking problem. The nonlinear controller is designed using the backstepping technique. Due to the non-invertibility of the input map, th
Externí odkaz:
http://arxiv.org/abs/2402.03709
Autor:
Belov, Vladimir, Erwin-Grabner, Tracy, Zeng, Ling-Li, Ching, Christopher R. K., Aleman, Andre, Amod, Alyssa R., Basgoze, Zeynep, Benedetti, Francesco, Besteher, Bianca, Brosch, Katharina, Bülow, Robin, Colle, Romain, Connolly, Colm G., Corruble, Emmanuelle, Couvy-Duchesne, Baptiste, Cullen, Kathryn, Dannlowski, Udo, Davey, Christopher G., Dols, Annemiek, Ernsting, Jan, Evans, Jennifer W., Fisch, Lukas, Fuentes-Claramonte, Paola, Gonul, Ali Saffet, Gotlib, Ian H., Grabe, Hans J., Groenewold, Nynke A., Grotegerd, Dominik, Hahn, Tim, Hamilton, J. Paul, Han, Laura K. M., Harrison, Ben J, Ho, Tiffany C., Jahanshad, Neda, Jamieson, Alec J., Karuk, Andriana, Kircher, Tilo, Klimes-Dougan, Bonnie, Koopowitz, Sheri-Michelle, Lancaster, Thomas, Leenings, Ramona, Li, Meng, Linden, David E. J., MacMaster, Frank P., Mehler, David M. A., Meinert, Susanne, Melloni, Elisa, Mueller, Bryon A., Mwangi, Benson, Nenadić, Igor, Ojha, Amar, Okamoto, Yasumasa, Oudega, Mardien L., Penninx, Brenda W. J. H., Poletti, Sara, Pomarol-Clotet, Edith, Portella, Maria J., Pozzi, Elena, Radua, Joaquim, Rodríguez-Cano, Elena, Sacchet, Matthew D., Salvador, Raymond, Schrantee, Anouk, Sim, Kang, Soares, Jair C., Solanes, Aleix, Stein, Dan J., Stein, Frederike, Stolicyn, Aleks, Thomopoulos, Sophia I., Toenders, Yara J., Uyar-Demir, Aslihan, Vieta, Eduard, Vives-Gilabert, Yolanda, Völzke, Henry, Walter, Martin, Whalley, Heather C., Whittle, Sarah, Winter, Nils, Wittfeld, Katharina, Wright, Margaret J., Wu, Mon-Ju, Yang, Tony T., Zarate, Carlos, Veltman, Dick J., Schmaal, Lianne, Thompson, Paul M., Goya-Maldonado, Roberto
Major depressive disorder (MDD) is a complex psychiatric disorder that affects the lives of hundreds of millions of individuals around the globe. Even today, researchers debate if morphological alterations in the brain are linked to MDD, likely due t
Externí odkaz:
http://arxiv.org/abs/2311.11046
Autor:
Gislaine Cristina Bill Kaelle, Taís Silvino Bastos, Renata Bacila Morais dos Santos de Souza, Eduarda Lorena Fernandes, Lorenna Nicole Araújo Santos, Simone Gisele de Oliveira, Ananda Portella Félix
Publikováno v:
Italian Journal of Animal Science, Vol 23, Iss 1, Pp 388-396 (2024)
This study aimed to evaluate the effects of different starch sources on the extrusion process, kibble characteristics and diet palatability for dogs. Seven diets with corn, brown rice, sorghum, potato starch, sweet potato flour, chickpea and pea as t
Externí odkaz:
https://doaj.org/article/bc5f14935fd04c5b9fbe4d4f2421f92c
Autor:
Barbara Barth, Danusa Mar Arcego, Euclides José de Mendonça Filho, Randriely Merscher Sobreira de Lima, Carine Parent, Carla Dalmaz, André Krumel Portella, Irina Pokhvisneva, Michael J. Meaney, Patricia Pelufo Silveira
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-14 (2024)
Abstract Cardiometabolic and psychiatric disorders often co-exist and share common early life risk factors, such as low birth weight. However, the biological pathways linking early adversity to adult cardiometabolic/psychiatric comorbidity remain unk
Externí odkaz:
https://doaj.org/article/794671e69b204d05ada8dcfbee68e6ba
Autor:
Filipe Baião Vieira, Guido Vaz Silva, Rodolfo Cardoso, Carlos Frederico de Oliveira Barros, Marco Antônio Franco Portella Lemos
Publikováno v:
Revista DAE, Vol 246, Pp 01-11 (2024)
Com o aumento do número de estações de tratamento de esgoto, os métodos tradicionais de destinação do lodo (resíduo gerado no processo), como incineração, espalhamento em terras agrícolas e aterros sanitários, oferecem sérios riscos ambie
Externí odkaz:
https://doaj.org/article/41bbbc69cebc44ab810199f188eeb398