4,321 results on '"Canella A"'
Search Results
2. Global Outreach Program: history and highlights
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Canella, Clarissa, de Almeida, Carolina Ávila, and Yamada, Andre Fukunishi
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- 2024
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3. A low repetition rate optical frequency comb
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Canella, Francesco, Weitenberg, Johannes, Thariq, Muhammad, Schmid, Fabian, Dwivedi, Paras, Galzerano, Gianluca, Haensch, Theodor W., Udem, Thomas, and Ozawa, Akira
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Physics - Optics - Abstract
Reducing the pulse repetition rate of an optical frequency comb increases the pulse energy for a given average power. This enhances the efficiency of nonlinear frequency conversion and it facilitates extending the accessible wavelength range, for example into the extreme ultraviolet (XUV). The resulting spectrally dense frequency comb can still be used for precision spectroscopy of narrow atomic or molecular transitions. In this article, we demonstrate a low-noise infrared frequency comb with a repetition rate as low as 40 kHz using a Yb:KYW mode-locked laser, pulse picking, and subsequent amplification. The frequency comb structure is confirmed by generating a beat note with a continuous wave reference laser. A comb mode is actively stabilized to the reference laser, and the integrated rms phase noise from 20 Hz to 20 kHz is measured to be 195 mrad.
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- 2023
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4. Industrial hemp biomass negatively affected by herbicide drift from corn and soybean herbicides
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Milos Zaric, Bruno Canella Vieira, Barbara Houston, Guilherme Sousa Alves, Sam E. Wortman, Julie Peterson, and Greg R. Kruger
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Medicine ,Science - Abstract
Abstract The establishment of industrial hemp (Cannabis sativa L.) fields near row crops has raised concerns about the potential adverse effects of herbicide drift on hemp production. This study examined hemp susceptibility to drift of herbicides registered for use in corn and/or soybeans. Herbicide solutions (2,4-D, dicamba, glufosinate, glyphosate, imazethapyr, lactofen, mesotrione) were applied separately in the wind tunnel (3.6 m s−1 airspeed), simulating drift scenarios, with conventional TP95015EVS (TP) and air inclusion AI95015EVS (AI) flat fan nozzles calibrated to deliver 140 L ha−1 carrier volume at 230 kPa. Mylar cards and hemp plants (20–25 cm tall) were placed downwind up to 12 m. Spray deposition from mylar cards was quantified using fluorometry and hemp biomass was collected 21 post application. Results indicated the nozzle design influenced downwind deposition; 5% of spray deposits from the TP nozzle reached 5.9 m downwind versus 2.0 m for the AI nozzle. Glyphosate, glufosinate, and mesotrione caused the highest biomass reductions, with 50% reductions observed at 19.3 (inferred), 8.7, and 9.3 m downwind for TP nozzle, and 4.1, 4.0, and 2.9 m for AI nozzle. These findings suggest herbicide applications at airspeeds of 3.6 m s−1 or greater present a risk to nearby hemp fields.
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- 2024
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5. Work statistics and Entanglement across the fermionic superfluid-insulator transition
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Zawadzki, Krissia, Canella, Guilherme A., França, Vivian V., and D'Amico, Irene
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Quantum Physics ,Condensed Matter - Strongly Correlated Electrons - Abstract
Entanglement in many-body systems may display interesting signatures of quantum phase transitions and similar properties are starting to be encountered in the analysis of work fluctuations. Here, we consider the fermionic superfluid-to-insulator transition (SIT) and relate its entanglement properties with its work distribution statistics. The SIT is modeled by the attractive fermionic Hubbard model in the presence of randomly distributed impurities. The work distribution is calculated across two quench protocols, both triggering the SIT. In the first, the concentration of impurities is increased; in the second, the impurities' disorder strength is varied. Our results indicate that, the critical state that induces minimization of the entanglement also maximizes the average work. We demonstrate that, for this state, density fluctuations vanish at all orders, hence all central moments of the work probability distribution are exactly zero at criticality. For systems undergoing a precursor to the transition (short chains with finite impurity potential) numerical results confirm these predictions, with higher moments further from the ideal result. For both protocols, at criticality, the system absorbs the most energy with almost no penalty in terms of fluctuations: ultimately this feature could be used to implement a quantum critical battery. The effects of temperature on these signatures of critical behaviour are also investigated and shown to favor work extraction for high enough temperatures.
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- 2023
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6. Industrial hemp biomass negatively affected by herbicide drift from corn and soybean herbicides
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Zaric, Milos, Canella Vieira, Bruno, Houston, Barbara, Sousa Alves, Guilherme, Wortman, Sam E., Peterson, Julie, and Kruger, Greg R.
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- 2024
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7. Across-environment seed protein stability and genetic architecture of seed components in soybean
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Wu, Chengjun, Acuña, Andrea, Florez-Palacios, Liliana, Harrison, Derrick, Rogers, Daniel, Mozzoni, Leandro, Mian, Rouf, and Canella Vieira, Caio
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- 2024
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8. Real-world effectiveness of Anti-CGRP monoclonal antibodies compared to OnabotulinumtoxinA (RAMO) in chronic migraine: a retrospective, observational, multicenter, cohort study
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Grazzi, Licia, Giossi, Riccardo, Montisano, Danilo Antonio, Canella, Mattia, Marcosano, Marilena, Altamura, Claudia, and Vernieri, Fabrizio
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- 2024
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9. Dorsal peduncular cortex activity modulates affective behavior and fear extinction in mice
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Botterill, Justin J., Khlaifia, Abdessattar, Appings, Ryan, Wilkin, Jennifer, Violi, Francesca, Premachandran, Hanista, Cruz-Sanchez, Arely, Canella, Anna Elisabete, Patel, Ashutosh, Zaidi, S. Danyal, and Arruda-Carvalho, Maithe
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- 2024
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10. High-frequency ultrasonography for subungual glomus tumor evaluation – imaging findings
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de Almeida, Carolina Ávila, Nakamura, Robertha, Leverone, Andreia, Marchiori, Edson, and Canella, Clarissa
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- 2024
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11. Finding the effective dynamics to make rare events typical in chaotic maps
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Gutiérrez, Ricardo, Canella-Ortiz, Adrián, and Pérez-Espigares, Carlos
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Condensed Matter - Statistical Mechanics ,Mathematical Physics ,Mathematics - Dynamical Systems ,Nonlinear Sciences - Chaotic Dynamics ,Quantum Physics - Abstract
Dynamical fluctuations or rare events associated with atypical trajectories in chaotic maps due to specific initial conditions can crucially determine their fate, as the may lead to stability islands or regions in phase space otherwise displaying unusual behavior. Yet, finding such initial conditions is a daunting task precisely because of the chaotic nature of the system. In this work, we circumvent this problem by proposing a framework for finding an effective topologically-conjugate map whose typical trajectories correspond to atypical ones of the original map. This is illustrated by means of examples which focus on counterbalancing the instability of fixed points and periodic orbits, as well as on the characterization of a dynamical phase transition involving the finite-time Lyapunov exponent. The procedure parallels that of the application of the generalized Doob transform in the stochastic dynamics of Markov chains, diffusive processes and open quantum systems, which in each case results in a new process having the prescribed statistics in its stationary state. This work thus brings chaotic maps into the growing family of systems whose rare fluctuations -- sustaining prescribed statistics of dynamical observables -- can be characterized and controlled by means of a large-deviation formalism., Comment: 6 pages, 3 figures + Supplemental Material
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- 2023
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12. Linear entropy fails to predict entanglement behavior in low-density fermionic systems
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Pauletti, T., Garcia, M., Canella, G. A., and França, V. V.
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Quantum Physics ,Condensed Matter - Disordered Systems and Neural Networks ,Condensed Matter - Strongly Correlated Electrons - Abstract
Entanglement is considered a fundamental ingredient for quantum technologies and condensed matter systems are among the good candidates for quantum devices. For bipartite pure states the von Neumann entropy is a proper measure of entanglement, while the linear entropy, associated to the mixedness of the reduced density matrices, is a simpler quantity to be obtained and is considered to be qualitatively equivalent to the von Neumann. Here we investigate both linear and von Neumann entropies for quantifying entanglement in homogeneous, superlattice and disordered Hubbard chains. We find regimes of parameters for which the linear entropy fails in reproducing the qualitative behavior of the von Neumann entropy. This then may lead to incorrect predictions i) of maximum and minimum entanglement states and ii) of quantum phase transitions.
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- 2023
13. Across-environment seed protein stability and genetic architecture of seed components in soybean
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Chengjun Wu, Andrea Acuña, Liliana Florez-Palacios, Derrick Harrison, Daniel Rogers, Leandro Mozzoni, Rouf Mian, and Caio Canella Vieira
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Medicine ,Science - Abstract
Abstract The recent surge in the plant-based protein market has resulted in high demands for soybean genotypes with improved grain yield, seed protein and oil content, and essential amino acids (EAAs). Given the quantitative nature of these traits, complex interactions among seed components, as well as between seed components and environmental factors and management practices, add complexity to the development of desired genotypes. In this study, the across-environment seed protein stability of 449 genetically diverse plant introductions was assessed, revealing that genotypes may display varying sensitivities to such environmental stimuli. The EAAs valine, phenylalanine, and threonine showed the highest variable importance toward the variation in stability, while both seed protein and oil contents were among the explanatory variables with the lowest importance. In addition, 56 single nucleotide polymorphism (SNP) markers were significantly associated with various seed components. Despite the strong phenotypic Pearson’s correlation observed among most seed components, many independent genomic regions associated with one or few seed components were identified. These findings provide insights for improving the seed concentration of specific EAAs and reducing the negative correlation between seed protein and oil contents.
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- 2024
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14. Typification of the name Sempervivum dolomiticum Facchini (Crassulaceae)
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Marco Canella, Yasaman Ranjbaran, Eugen Behrens, Costantino Bonomi, Simone Orsenigo, and Francesco Dal Grande
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Botany ,QK1-989 - Abstract
The designation of type material is a crucial step in taxonomy. It enables the establishment of a strong morphological reference for plant species description and identification. In the current work, we investigated the MUSE-preserved collections to trace back the original study material employed by Francesco Facchini to describe Sempervivum dolomiticum Facchini. This chasmophyte is an Italian endemic occurring in the eastern Dolomites. A lectotype and an isotype have been designated.
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- 2024
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15. Programmable System Call Security with eBPF
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Jia, Jinghao, Zhu, YiFei, Williams, Dan, Arcangeli, Andrea, Canella, Claudio, Franke, Hubertus, Feldman-Fitzthum, Tobin, Skarlatos, Dimitrios, Gruss, Daniel, and Xu, Tianyin
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Computer Science - Operating Systems ,Computer Science - Cryptography and Security - Abstract
System call filtering is a widely used security mechanism for protecting a shared OS kernel against untrusted user applications. However, existing system call filtering techniques either are too expensive due to the context switch overhead imposed by userspace agents, or lack sufficient programmability to express advanced policies. Seccomp, Linux's system call filtering module, is widely used by modern container technologies, mobile apps, and system management services. Despite the adoption of the classic BPF language (cBPF), security policies in Seccomp are mostly limited to static allow lists, primarily because cBPF does not support stateful policies. Consequently, many essential security features cannot be expressed precisely and/or require kernel modifications. In this paper, we present a programmable system call filtering mechanism, which enables more advanced security policies to be expressed by leveraging the extended BPF language (eBPF). More specifically, we create a new Seccomp eBPF program type, exposing, modifying or creating new eBPF helper functions to safely manage filter state, access kernel and user state, and utilize synchronization primitives. Importantly, our system integrates with existing kernel privilege and capability mechanisms, enabling unprivileged users to install advanced filters safely. Our evaluation shows that our eBPF-based filtering can enhance existing policies (e.g., reducing the attack surface of early execution phase by up to 55.4% for temporal specialization), mitigate real-world vulnerabilities, and accelerate filters.
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- 2023
16. Improving predictive ability in sparse testing designs in soybean populations.
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Persa, Reyna, Canella Vieira, Caio, Rios, Esteban, Hoyos-Villegas, Valerio, Messina, Carlos, Runcie, Daniel, and Jarquin, Diego
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experimental design ,genomic prediction ,genotype-by-environment interaction ,plant breeding ,soybean ,sparse testing - Abstract
The availability of high-dimensional genomic data and advancements in genome-based prediction models (GP) have revolutionized and contributed to accelerated genetic gains in soybean breeding programs. GP-based sparse testing is a promising concept that allows increasing the testing capacity of genotypes in environments, of genotypes or environments at a fixed cost, or a substantial reduction of costs at a fixed testing capacity. This study represents the first attempt to implement GP-based sparse testing in soybeans by evaluating different training set compositions going from non-overlapped RILs until almost the other extreme of having same set of genotypes observed across environments for different training set sizes. A total of 1,755 recombinant inbred lines (RILs) tested in nine environments were used in this study. RILs were derived from 39 bi-parental populations of the Soybean Nested Association Mapping (NAM) project. The predictive abilities of various models and training set sizes and compositions were investigated. Training compositions included a range of ratios of overlapping (O-RILs) and non-overlapping (NO-RILs) RILs across environments, as well as a methodology to maximize or minimize the genetic diversity in a fixed-size sample. Reducing the training set size compromised predictive ability in most training set compositions. Overall, maximizing the genetic diversity within the training set and the inclusion of O-RILs increased prediction accuracy given a fixed training set size; however, the most complex model was less affected by these factors. More testing environments in the early stages of the breeding pipeline can provide a more comprehensive assessment of genotype stability and adaptation which are fundamental for the precise selection of superior genotypes adapted to a wide range of environments.
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- 2023
17. Monumento memoriale
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Gentucca Canella
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Monumento-memoriale ,Scultura/Architettura ,Critica militante ,Secondo Novecento ,Architecture ,NA1-9428 - Abstract
Il numero apre, in via sperimentale, a una riflessione sul Monumento memoriale attraverso il coinvolgimento operativo, in un concorso di progettazione, dei dottorandi in architettura con la partecipazione vincolante di uno scultore. Il progetto di un memoriale celebrativo in cinque contesti di singolare valore ha visto un’iniziale selezione degli elaborati di primo grado (abstract, bozzetto, modello), da parte di una giuria presieduta da Paolo Icaro, maestro scultore, con Carmen Andriani, ordinario in composizione architettonica. Una giuria d’eccezione, quindi, che ha saputo riprendere certe costanti di impegno morale presenti in alcuni straordinari concorsi nazionali di progettazione tra gli anni Sessanta e Settanta del Novecento. Questo scritto si discosta pertanto da un editoriale in senso tradizionale cercando, seppur con molte incertezze, di proporre un ragionamento oscillante tra scultura e architettura, tra tensione plastica e elementi del comporre, tra carattere “domestico” e “monumento di memoria”, tra “tensione al rientro” e critica militante.
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- 2024
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18. Exploratory testing for platform video games: strategies and lessons learned
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Yohan Duarte, Henrique Canella Mandelli, Vinicius Durelli, Paulo Augusto Nardi, and Andre Takeshi Endo
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Game Testing ,Software Testing ,Playtesting ,Platform Games ,Manual Testing ,Computer software ,QA76.75-76.765 ,Computer engineering. Computer hardware ,TK7885-7895 - Abstract
With the growth of the digital games market, the occurrence of bugs in games has a significant impact and generates dissatisfaction among users. Therefore, conducting tests is necessary to avoid these events and ensure the quality of the distributed product. Among the tests that are performed in games, one that is particularly effective in identifying bugs from the user's perspective is exploratory testing, but this is little covered in game testing literature, not providing new testers with guides or paths to be used for specific occasions. This paper reports an experience of applying exploratory testing strategies in 2D and 3D platform games. We selected seven well-known strategies of exploratory testing and conducted a study that involved the definition of a game testing procedure and proper adaptations for the games under test. By applying the game testing procedure, several bugs with low, medium and high severity were uncovered. The lessons learned and routines carried out in this study can be used by new testers in games of the same category, in an attempt to obtain better results.
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- 2024
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19. Real-world effectiveness of Anti-CGRP monoclonal antibodies compared to OnabotulinumtoxinA (RAMO) in chronic migraine: a retrospective, observational, multicenter, cohort study
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Licia Grazzi, Riccardo Giossi, Danilo Antonio Montisano, Mattia Canella, Marilena Marcosano, Claudia Altamura, and Fabrizio Vernieri
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Migraine ,Erenumab ,Galcanezumab ,Fremanezumab ,Onabotulinumtoxin ,Medicine - Abstract
Abstract Background Chronic migraine (CM) is a disabling condition with high prevalence in the general population. Until the recent approval of monoclonal antibodies targeting the calcitonin gene-related peptide (Anti-CGRP mAbs), OnabotulinumtoxinA (BoNT-A) was the only treatment specifically approved for CM prophylaxis. Direct comparisons between the two treatments are not available so far. Methods We performed an observational, retrospective, multicenter study in Italy to compare the real-world effectiveness of Anti-CGRP mAbs and BoNT-A. Patients with CM who had received either treatment according to Italian prescribing regulations were extracted from available clinical databases. Efficacy outcomes included the change from baseline in monthly headache days (MHD), MIgraine Disability ASsessment test (MIDAS), and monthly acute medications (MAM) evaluated at 6 and 12 months of follow-up. The primary outcome was MHD change from baseline at 12 months. Safety outcomes included serious adverse events (SAE) and treatment discontinuation. Unadjusted and adjusted models were used for the analyses. Results Two hundred sixteen potentially eligible patients were screened; 183 (86 Anti-CGRP mAbs; 97 BoNT-A) were included. One hundred seventy-one (80 Anti-CGRP mAbs; 91 BoNT-A) and 154 (69 Anti-CGRP mAbs; 85 BoNT-A) patients were included in the efficacy analysis at 6 and 12 months of follow-up, respectively. Anti-CGRP mAbs and BoNT-A both resulted in a mean MHD reduction at 6 (-11.5 and -7.2 days, respectively; unadjusted mean difference -4.3; 95%CI -6.6 to -2.0; p = 0.0003) and 12 months (-11.9 and -7.6, respectively; unadjusted mean difference -4.4; 95%CI -6.8 to -2.0; p = 0.0002) of follow-up. Similar results were observed after adjusting for baseline confounders. Anti-CGRP mAbs showed a significant MIDAS (-31.7 and -19.2 points, p = 0.0001 and p = 0.0296, respectively) and MAM reduction (-5.1 and -3.1 administrations, p = 0.0023 and p = 0.0574, respectively) compared to BoNT-A at 6 and 12 months. No SAEs were reported. One patient receiving fremanezumab discontinued treatment due to arthralgia. Treatment discontinuations, mainly for inefficacy, were comparable. Conclusion Both Anti-CGRP mAbs and BoNT-A were effective in CM patients with Anti-CGRP mAbs presenting higher effect magnitude, with comparable safety. Still, BoNT-A remains a valuable option for CM patients with contraindications to Anti-CGRP mAbs or for frail categories who are candidates to local therapy with limited risk of systemic administration. Graphical Abstract
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- 2024
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20. SFIP: Coarse-Grained Syscall-Flow-Integrity Protection in Modern Systems
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Canella, Claudio, Dorn, Sebastian, Gruss, Daniel, and Schwarz, Michael
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Computer Science - Cryptography and Security - Abstract
Growing code bases of modern applications have led to a steady increase in the number of vulnerabilities. Control-Flow Integrity (CFI) is one promising mitigation that is more and more widely deployed and prevents numerous exploits. CFI focuses purely on one security domain. That is, transitions between user space and kernel space are not protected by CFI. Furthermore, if user space CFI is bypassed, the system and kernel interfaces remain unprotected, and an attacker can run arbitrary transitions. In this paper, we introduce the concept of syscall-flow-integrity protection (SFIP) that complements the concept of CFI with integrity for user-kernel transitions. Our proof-of-concept implementation relies on static analysis during compilation to automatically extract possible syscall transitions. An application can opt-in to SFIP by providing the extracted information to the kernel for runtime enforcement. The concept is built on three fully-automated pillars: First, a syscall state machine, representing possible transitions according to a syscall digraph model. Second, a syscall-origin mapping, which maps syscalls to the locations at which they can occur. Third, an efficient enforcement of syscall-flow integrity in a modified Linux kernel. In our evaluation, we show that SFIP can be applied to large scale applications with minimal slowdowns. In a micro- and a macrobenchmark, it only introduces an overhead of 13.1% and 1.8%, respectively. In terms of security, we discuss and demonstrate its effectiveness in preventing control-flow-hijacking attacks in real-world applications. Finally, to highlight the reduction in attack surface, we perform an analysis of the state machines and syscall-origin mappings of several real-world applications. On average, SFIP decreases the number of possible transitions by 38.6% compared to seccomp and 90.9% when no protection is applied.
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- 2022
21. Effects of Temperature and Magnetization on the Mott-Anderson Physics in one-dimensional Disordered Systems
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Canella, G. A., Zawadzki, K., and França, V. V.
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Condensed Matter - Strongly Correlated Electrons ,Condensed Matter - Disordered Systems and Neural Networks ,Condensed Matter - Materials Science ,Condensed Matter - Quantum Gases ,Quantum Physics - Abstract
We investigate the Mott-Anderson physics in interacting disordered one-dimensional chains through the average single-site entanglement quantified by the linear entropy, which is obtained via density-functional theory calculations. We show that the minimum disorder strength required to the so-called full Anderson localization $-$ characterized by the real-space localization of pairs $-$ is strongly dependent on the interaction regime. The degree of localization is found to be intrinsically related to the interplay between the correlations and the disorder potential. In magnetized systems, the minimum entanglement characteristic of the full Anderson localization is split into two, one for each of the spin species. We show that although all types of localization eventually disappear with increasing temperature, the full Anderson localization persists for higher temperatures than the Mott-like localization.
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- 2022
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22. Low frequency-to-intensity noise conversion in a pulsed laser cavity locking by exploiting Carrier-Envelope Offset manipulation
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Canella, Francesco, Suerra, Edoardo, Giannotti, Dario, Galzerano, Gianluca, and Cialdi, Simone
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Physics - Optics - Abstract
We report on the dependence of the frequency-to-intensity noise conversion in the locking of an ultrafast laser against a high-finesse optical resonator from the Carrier Envelope Offset (CEO) frequency. By a proper combination of the cavity finesse and laser CEO frequency it is possible to optimize the signal-to-noise ratio of the laser intensity trapped into the optical resonator. The theoretical description of the problem together with the numerical simulations and experimental results are presented with the aim of a strong suppression of the intensity fluctuations of the trapped laser field.
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- 2022
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23. Evaluation of food purchasing in the Brazilian School Feeding Programme: feasibility of the requirements and recommendations
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Ana Beatriz Coelho de Azevedo, Daniel Henrique Bandoni, Ana Laura Benevenuto de Amorim, and Daniela Silva Canella
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School feeding ,Public policy ,Food processing ,Diversity ,Public aspects of medicine ,RA1-1270 ,Nutritional diseases. Deficiency diseases ,RC620-627 - Abstract
Abstract Objective: To analyse the purchase of food for school feeding, according to the extent and purpose of industrial processing and variety, exploring the feasibility of achieving the requirements and recommendations of the Brazilian School Feeding Programme, and the variety of unprocessed or minimally processed foods according to the purchase of ultra-processed foods. Design: Secondary data from 2016 from the Accountability Management System of the National Fund for Educational Development, concerning the food items purchased, were used to explore the feasibility of the requirements and recommendations. The foods were grouped according to the NOVA classification system. Variety was assessed by counting different types of unprocessed or minimally processed foods. Setting: Brazil. Participants: 3698 Brazilian municipalities. Results: Energy share from unprocessed or minimally processed foods was 44·1 % while that of ultra-processed foods was 29·9 %. The average of unprocessed or minimally processed food types purchased annually was 33·8 items. Of the municipalities, 35·8 % were within the limit established for the expenditure of funds for the purchase of processed and ultra-processed foods, while 8·7 % followed the recommendation for variety. The proportion of ultra-processed foods did not influence the variety of food items purchased. Conclusions: The results showed the feasibility of achieving the requirements and recommendations and underscored the importance of continued efforts to promote the inclusion of unprocessed or minimally processed foods in the school feeding programme while addressing the challenges associated with expenditure limits of processed and ultra-processed foods and enhancing variety, which is strategic to promote adequate and healthy meals.
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- 2023
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24. Systematic Analysis of Programming Languages and Their Execution Environments for Spectre Attacks
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Naseredini, Amir, Gast, Stefan, Schwarzl, Martin, Bernardo, Pedro Miguel Sousa, Smajic, Amel, Canella, Claudio, Berger, Martin, and Gruss, Daniel
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Computer Science - Cryptography and Security - Abstract
In this paper, we analyze the security of programming languages and their execution environments (compilers and interpreters) with respect to Spectre attacks. The analysis shows that only 16 out of 42 execution environments have mitigations against at least one Spectre variant, i.e., 26 have no mitigations against any Spectre variant. Using our novel tool Speconnector, we develop Spectre proof-of-concept attacks in 8 programming languages and on code generated by 11 execution environments that were previously not known to be affected. Our results highlight some programming languages that are used to implement security-critical code, but remain entirely unprotected, even three years after the discovery of Spectre.
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- 2021
25. Domain Page-Table Isolation
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Canella, Claudio, Kogler, Andreas, Giner, Lukas, Gruss, Daniel, and Schwarz, Michael
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Computer Science - Cryptography and Security - Abstract
Modern applications often consist of different security domains that require isolation from each other. While several solutions exist, most of them rely on specialized hardware, hardware extensions, or require less-efficient software instrumentation of the application. In this paper, we propose Domain Page-Table Isolation (DPTI), a novel mechanism for hardware-enforced security domains that can be readily used on commodity off-the-shelf CPUs. DPTI uses two novel techniques for dynamic, time-limited changes to the memory isolation at security-critical points, called memory freezing and stashing. We demonstrate the versatility and efficacy of DPTI in two scenarios: First, DPTI freezes or stashes memory to support faster and more fine-grained syscall filtering than state-of-the-art seccomp-bpf. With the provided memory safety guarantees, DPTI can even securely support deep argument filtering, such as string comparisons. Second, DPTI freezes or stashes memory to efficiently confine potentially untrusted SGX enclaves, outperforming existing solutions by 14.6%-22% while providing the same security guarantees. Our results show that DPTI is a viable mechanism to isolate domains within applications using only existing mechanisms available on modern CPUs, without relying on special hardware instructions or extensions
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- 2021
26. Linear entropy fails to predict entanglement behavior in low-density fermionic systems
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Pauletti, T., Silva, M.A.G., Canella, G.A., and França, V.V.
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- 2024
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27. Effects of blended learning training for oncology physicians to advise their patients about complementary and integrative therapies: results from the multicenter cluster-randomized KOKON-KTO trial
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Helmer, Stefanie M., Rogge, Alizé A., King, Ryan, Canella, Claudia, Pach, Daniel, and Witt, Claudia M.
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- 2023
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28. Food additives and PAHO’s nutrient profile model as contributors’ elements to the identification of ultra-processed food products
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Canella, Daniela Silva, Pereira Montera, Vanessa dos Santos, Oliveira, Natália, Mais, Laís Amaral, Andrade, Giovanna Calixto, and Martins, Ana Paula Bortoletto
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- 2023
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29. Detection of musculoskeletal inflammatory lesions in patients with chronic chikungunya infection using 3T whole-body magnetic resonance imaging
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Aline Serfaty, Silvana Mendonça, Clarissa Canella, and Edson Marchiori
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Musculoskeletal diseases ,Chikungunya infection ,Magnetic resonance imaging ,Polyarthralgia ,Tenosynovitis ,Arctic medicine. Tropical medicine ,RC955-962 - Abstract
ABSTRACT Background: Musculoskeletal inflammatory lesions in chronic Chikungunya virus (CHIKV) infection have not been thoroughly assessed using whole-body magnetic resonance imaging (WBMRI). This study aimed to determine the prevalence of these lesions in such patients. Methods: From September 2018 to February 2019, patients with positive Chikungunya-specific serology (Immunoglobulin M/Immunoglobulin G anti-CHIKV), with a history of polyarthralgia for > 6 months prior to MRI with no pre-existing rheumatic disorders, underwent 3T WBMRI and localized MRI. The evaluation focused on musculoskeletal inflammatory lesions correlated with chronic CHIKV infection. Pain levels were assessed using a visual analogue scale on the same day as WBMRI. Results: The study included 86 patients of whom 26 met the inclusion criteria. All patients reported pain and most (92.3%) categorized it as moderate or severe. The most common finding across joints was effusion, particularly in the tibiotalar joint (57.7%) and bursitis, with the retrocalcaneal bursa most affected (48.0%). Tenosynovitis was prevalent in the flexor compartment of the hands (44.2%), while Kager fat pad and soleus edema were also observed. Bone marrow edema-like signals were frequently seen in the sacroiliac joints (19.2%). Most WBMRI findings were classified as mild. Conclusions: This study represents the first utilization of 3T WBMRI to assess musculoskeletal inflammatory disorders in chronic CHIKV infection. The aim was to identify the most affected joints and prevalent lesions, providing valuable insights for future research and clinical management of this condition regarding understanding disease pathophysiology, developing targeted treatment strategies, and using advanced imaging techniques in the assessment of musculoskeletal manifestations.
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- 2024
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30. Developing a digital mind body medicine supportive care intervention for people with amyotrophic lateral sclerosis using stakeholder engagement and design thinking
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Claudia Canella, Carina Braun, and Claudia M. Witt
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Computer applications to medicine. Medical informatics ,R858-859.7 - Abstract
Background Amyotrophic lateral sclerosis disease (ALS) is also called the disease of a thousand farewells. Consequently, it is important to offer supportive care interventions that can be applied continuously during the whole course of the disease. People with ALS are interested in complementary and integrative medicine. Due to ALS’ progressive nature, digital solutions might be most feasible and accessible for people with ALS in the long-term. Objectives In our study, we explored with stakeholders which digital complementary and integrative medicine interventions and formats are considered as supportive for people with ALS, and which settings are needed by the people with ALS to incorporate the interventions in everyday life. Methods We used a participatory research approach and conducted a stakeholder engagement process, applying a design thinking process with qualitative research methods (interviews, workshops). Results Due to the unpredictable course of the disease on their loss of abilities, people with ALS welcome online settings because they are accessible and easy to implement in their daily life. Stakeholders considered the following implementation factors for a complementary and integrative medicine intervention as essential: short-term realization of planned interventions, short duration of interventions, and user-friendliness in terms of accessibility and applicability. Concerning the complementary and integrative medicine interventions, the people with ALS preferred mind body medicine interventions, such as breathing, mindfulness and relaxation exercises. Conclusions Short-term treatment intervals and short online mind body medicine interventions align with the needs of people with ALS. The complementary and integrative medicine interventions as well as the digital infrastructure must meet the special accessibility and applicability needs of people with ALS.
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- 2024
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31. The Collaborative Body in Qualitative Research
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Collective, Bodies, primary, Bittinger, Ryan, additional, Canella, Claudia, additional, Erb, Jess, additional, Helps, Sarah, additional, Huhnen, Mark, additional, Kirkpatrick, Davina, additional, and Mendus, Alys, additional
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- 2023
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32. Recommendations for the Screening of Breast Cancer of the Brazilian College of Radiology and Diagnostic Imaging, Brazilian Society of Mastology and Brazilian Federation of Gynecology and Obstetrics Association
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Linei Augusta Brolini Delle Urban, Luciano Fernandes Chala, Ivie Braga de Paula, Selma di Pace Bauab, Marcela Brisighelli Schaefer, Ana Lúcia Kefalás Oliveira, Carlos Shimizu, Tatiane Mendes Gonçalves de Oliveira, Paula de Camargo Moraes, Beatriz Medicis Maranhão Miranda, Flávia Engel Aduan, Salete de Jesus Fonseca Rego, Ellyete de Oliveira Canella, Henrique Lima Couto, Gustavo Machado Badan, José Luis Esteves Francisco, Thaís Paiva Moraes, Rosangela Requi Jakubiak, and João Emílio Peixoto
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breast cancer screening ,mammography ,ultrasound ,magnetic resonance imaging ,Gynecology and obstetrics ,RG1-991 - Abstract
Abstract Objective To present the update of the recommendations of the Brazilian College of Radiology and Diagnostic Imaging, the Brazilian Society of Mastology and the Brazilian Federation of Associations of Gynecology and Obstetrics for breast cancer screening in Brazil. Methods Scientific evidence published in Medline, EMBASE, Cochrane Library, EBSCO, CINAHL and Lilacs databases between January 2012 and July 2022 was searched. Recommendations were based on this evidence by consensus of the expert committee of the three entities. Recommendations Annual mammography screening is recommended for women at usual risk aged 40–74 years. Above 75 years, it should be reserved for those with a life expectancy greater than seven years. Women at higher than usual risk, including those with dense breasts, with a personal history of atypical lobular hyperplasia, classic lobular carcinoma in situ, atypical ductal hyperplasia, treatment for breast cancer or chest irradiation before age 30, or even, carriers of a genetic mutation or with a strong family history, benefit from complementary screening, and should be considered individually. Tomosynthesis is a form of mammography and should be considered in screening whenever accessible and available.
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- 2023
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33. Scientific research on food environments in Brazil: a scoping review
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Larissa Loures Mendes, Luana Lara Rocha, Laís Vargas Botelho, Mariana Carvalho de Menezes, Paulo César Pereira de Castro Júnior, Alex Oliveira da Camara, Leticia de Olivera Cardoso, Inês Rugani Ribeiro de Castro, Paula Martins Horta, Milene Cristine Pessoa, Marcela Boro Veiros, and Daniela Silva Canella
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Food environment ,Brazil ,Scientific research ,Public aspects of medicine ,RA1-1270 ,Nutritional diseases. Deficiency diseases ,RC620-627 - Abstract
Abstract Objective: To map the scientific research on food environments in Brazil, based on the following questions: How many studies have addressed food environments?; What study designs and methodological approaches were applied?; What is the geographic scope of the studies?; What scenarios and dimensions of food environments were studied?; Which population groups were studied?; How were food environments conceptualised?; What are the main limitations of the studies? Design: Scoping review conducted in four databases, from January 2005 to December 2022, using different food environment-related terms to cover the main types and dimensions proposed in the literature. The studies were independently selected by two authors. A narrative synthesis was used to summarise the findings. Setting: Brazil. Participants: 130 articles. Results: Scientific research on Brazilian food environments has been increasing. The analytical quantitative approach and the cross-sectional design were the most frequently used. Most articles were published in English. The majority of studies evaluated the community food environment, addressed aspects of the physical dimension, sampled the adult population, had food consumption as an outcome, used primary data, and were carried out in capital cities in the Southeast region. Furthermore, in most articles, no conceptual model was explicitly adopted. Conclusions: Gaps in literature are related to the need for conducting studies in the Brazilian countryside, the support for the formulation of research questions based on conceptual models, the use of valid and reliable instruments to collect primary data, in addition to the need for a greater number of longitudinal, intervention and qualitative studies.
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- 2023
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34. Particle drift potential of mesotrione and rimsulfuron plus thifensulfuron-methyl tank mixture in a low-speed wind tunnel
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Milan Brankov, Guilherme Sousa Alves, Bruno Canella Vieira, Milos Zaric, and Greg Robert Kruger
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off-target movement of application ,crop injuries ,deposition ,Plant culture ,SB1-1110 - Abstract
Particle drift happens during herbicide application when droplets travel outside the intended site. Different nozzles produce various range of droplets, so they play a very important role in coverage and drift occasions. When nozzles produce small droplets, the potential for off-target movement is very high. Another important factor determining particle drift is the distance between crops. Wind velocity gives the energy to herbicide particles to move away from the target place. Therefore, a drift simulation of herbicide (mesotrione and rimsulfuron plus thifensulfuron-methyl mixture) was done in a wind tunnel, using different nozzles Extended Range (XR) and Turbo TeeJet Induction (TTI). The wind speed was set at 4.4 m/s, representing the least favourable conditions where applications are possible. In the wind tunnel, eight crops (cantaloupe, cotton, green bean, pumpkin, soybean, sunflower, wheat, and watermelon) were positioned at 4, 6, 9, and 12 m downwind distances from the nozzle, and drift was simulated. Following treatments, plants were returned to a greenhouse for 28 days, and biomass reduction was recorded. Artificial collectors (Mylar cards) and water sensitive cards were positioned alongside plants. According to obtained results, spraying with XR nozzle influences higher injuries than TTI nozzle. Tracer deposition was higher at all distances when XR nozzle was used. Accordingly, droplet numbers, covered area, Volume Median Diameter (VMD), and deposition were higher on water sensitive cards when spraying were done using XR nozzle. As a consequence, higher biomass reduction occurred using the XR nozzle. The most sensitive crops were cantaloupe, pumpkin and sunflower, while the most tolerant were soybean and wheat.
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- 2023
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35. Effects of blended learning training for oncology physicians to advise their patients about complementary and integrative therapies: results from the multicenter cluster-randomized KOKON-KTO trial
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Stefanie M. Helmer, Alizé A. Rogge, Ryan King, Claudia Canella, Daniel Pach, and Claudia M. Witt
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Integrative oncology ,Cancer ,Physician–patient communication ,Complementary medicine ,Clinical trials ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Background Many oncology physicians are confronted with the topic of complementary and integrative medicine (CIM) by cancer patients. This study examined whether a blended learning (e-learning and a workshop) to train oncology physicians in providing advice on CIM therapies to their cancer patients, in addition to distributing an information leaflet about reputable CIM websites, had different effects on physician-reported outcomes in regard to consultations compared with only distributing the leaflet. Methods In a multicenter, cluster-randomized trial, 48 oncology physicians were randomly allocated to an intervention group (CIM consultation and an information leaflet) or a control group (information leaflet only). After the training, the oncology physicians conducted 297 consultations with their cancer patients. Measurements were assessed at oncology physician, physician–patient-interaction (measured by external reviewers), and patient levels. This analysis focused on the physician outcomes of stress reaction and perceived consultation skill competency. In addition, qualitative interviews were conducted with a subsample of oncology physicians who experienced both, the intervention and control condition. Results The oncology physicians in the intervention group showed a lower stress reaction in all measured dimensions after CIM consultations than those in the control group. There was no significant difference between oncology physicians in the intervention and control groups regarding the perceived consultation skill competency (overburden: intervention 1.4 [95% CI: 0.7;2.1]; control 2.1 [95% CI: 1.4;2.7], tension: 1.3 [95% CI: 0.7;2.0] vs. 1.9 [95% CI: 1.3;2.5], and discomfort with consultation situations: 1.0 [95% CI: 0.4;1.7]; vs. 1.7 [95% CI: 1.2;2.3]). The qualitative data showed that only providing the leaflet seemed impersonal to oncology physicians, while the training made them feel well prepared to conduct a full conversation about CIM and provide the information leaflet. Conclusions In our exploratory study providing structured CIM consultations showed positive effects on the perceived stress of oncology physicians, and the training was subjectively experienced as an approach that improved physician preparation for advising cancer patients about CIM, however no effects regarding perceived consultation skill competency were found. Trial registration The trial registration number of the KOKON-KTO study is DRKS00012704 in the German Clinical Trials Register (Date of registration: 28.08.2017).
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- 2023
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36. Therapeutic utility of engineered myeloid cells in the tumor microenvironment
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Canella, Alessandro and Rajappa, Prajwal
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- 2023
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37. Mott-Anderson Metal-Insulator Transitions from Entanglement
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Canella, G. A. and França, V. V.
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Condensed Matter - Strongly Correlated Electrons ,Condensed Matter - Disordered Systems and Neural Networks ,Condensed Matter - Materials Science ,Condensed Matter - Quantum Gases ,Quantum Physics - Abstract
A metal can be driven to an insulating phase through distinct mechanisms. A possible way is via the Coulomb interaction, which then defines the Mott metal-insulator transition (MIT). Another possibility is the MIT driven by disorder, the so-called Anderson MIT. Here we analyze interacting particles in disordered Hubbard chains $-$ thus comprising the Mott-Anderson physics $-$ by investigating the ground-state entanglement with density functional theory. The localization signature on entanglement is found to be a local minimum at a certain critical density. Individually, the Mott (Anderson) MIT has a single critical density whose minimum entanglement decreases as the interaction (disorder) enhances. While in the Mott MIT entanglement saturates at finite values, characterizing partial localization, in the Anderson MIT the system reaches full localization, with zero entanglement, for sufficiently strong disorder. In the combined Mott-Anderson MIT, we find three critical densities referring to local minima on entanglement. One of them is the same as for the Anderson MIT, but now the presence of interaction requires a stronger disorder potential to induce localization. A second critical density is related to the Mott MIT, but due to disorder it is displaced by a factor proportional to the concentration of impurities. The third local minimum on entanglement is unique to the concomitant presence of disorder and interaction, found to be related to an effective density phenomenon, thus referred to as a Mott-like MIT. Since entanglement has been intrinsically connected to the magnetic susceptibility $-$ a quantity promptly available in cold atoms experiments $-$ our detailed numerical description might be useful for the experimental investigation of Mott-Anderson MIT., Comment: to appear in Physical Review B (2021)
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- 2021
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38. Realization and characterization of a low intensity noise ultrafast Yb-doped fiber amplifier
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Canella, Francesco, Molteni, Lisa Marta, Cialdi, Simone, Laporta, Paolo, Coluccelli, Nicola, and Galzerano, Gianluca
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Physics - Optics - Abstract
We report on the design and whole characterization of low-noise and affordable-cost Yb-doped double-clad fiber amplifiers operating at room temperature in the near-infrared spectral region at pulse repetition rate of 160 MHz. Two different experimental configurations are discussed. In the first one, a broadband seed radiation with a transform limited pulse duration of 71 fs, an optical spectrum of 20 nm wide at around 1040 nm, and 20 mW average power is adopted. In the second configuration, the seed radiation is constituted by stretched pulses with a time duration as long as 170 ps, with a 5-nm narrow pulse spectrum centered at 1029 nm and 2 mW average input power. In both cases we obtained transform limited pulse trains with an amplified output power exceeding 2 W. Furthermore, relative intensity noise measurements show that no significant noise degradation occurs during the amplification process.
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- 2021
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39. A new method for spatial mode shifting of a stabilized optical cavity for the generation of dual-color X-rays
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Suerra, Edoardo, Giannotti, Dario, Canella, Francesco, Capra, Stefano, Cipriani, Daniele, Mettivier, Giovanni, Galzerano, Gianluca, Cardarelli, Paolo, Cialdi, Simone, and Serafini, Luca
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Physics - Optics - Abstract
We propose an innovative method to shift the transversal position of the focal point of an optical cavity keeping it actively stabilized. Our cavity is a 4 mirrors bow-tie cavity and the spatial shift of the resonant mode is obtained by properly rotating the two curved mirrors by piezo actuators. This method allows us to move the transversal position of the cavity focal point of $135 \mu m$ in a time of $50 ms$, keeping the resonance condition of the cavity by means of the Pound-Drever-Hall technique. We propose to use this technique for the generation of 2-color X-rays via Inverse Compton Scattering (ICS). This technique exploits the large average power stored in the high finesse cavity by shifting the laser beam with respect to the electron beam trajectory, hence controlling the spatial superposition of the electron and photon beams in the interaction region. Arranging two cavities assembled one on top of the other, with different collision angle with the electron beam, allows the generation of X-ray bursts of different energies just by swiftly moving the two cavities, switching the two focal points onto the electron beam trajectory, thus activating in sequence two different ICS spectral lines.
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- 2021
40. Rice Regeneration in a Genebank: 21 Years of Data
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Francesca Sansoni, Lorenzo Sena, Virginia Pozzi, Marco Canella, and Patrizia Vaccino
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Oryza sativa ,rice ,genebank ,historical data ,R language ,Agriculture - Abstract
Genebanks, other than their pivotal role as diversity conservation repositories, regenerate part of their collection every year to maintain their material in optimal conditions. During regeneration cycles, morpho-physiological data are collected, contributing to the creation of large datasets that offer a valuable resource of information. In Italy, rice cultivation has been documented since the second half of the 15th century, and nowadays, Italy contributes more than 50% of the total European rice production. The ex situ collection of rice (mainly Oryza sativa L. subgroup japonica) held at the Research Center for Cereal and Industrial Crops (CREA-CI) of Vercelli is quite unique in Italy and its establishment dates back to the beginning of the 20th century. The collection is hereby presented through the analysis of 21 years of historic data, from 2001 to 2022, in 17 different locations in Northern Italy, for a total of 6592 entries, 677 genotypes analyzed and 9 phenotypic traits under investigation. An R script has been developed to analyze the dataset. The BLUEs calculation, heritability, PCA and correlation with weather data provided a comprehensive overview of the germplasm stored in the genebank. The great variability and phenotypic diversity were assessed, key aspects from the perspective of breeding programs. This work starts a re-evaluation of historic data, historic cultivars, and represents the first step toward the shift of the genebank to a bio-digital resource center.
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- 2024
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41. Automating Seccomp Filter Generation for Linux Applications
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Canella, Claudio, Werner, Mario, Gruss, Daniel, and Schwarz, Michael
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Computer Science - Cryptography and Security - Abstract
Software vulnerabilities in applications undermine the security of applications. By blocking unused functionality, the impact of potential exploits can be reduced. While seccomp provides a solution for filtering syscalls, it requires manual implementation of filter rules for each individual application. Recent work has investigated automated approaches for detecting and installing the necessary filter rules. However, as we show, these approaches make assumptions that are not necessary or require overly time-consuming analysis. In this paper, we propose Chestnut, an automated approach for generating strict syscall filters for Linux userspace applications with lower requirements and limitations. Chestnut comprises two phases, with the first phase consisting of two static components, i.e., a compiler and a binary analyzer, that extract the used syscalls during compilation or in an analysis of the binary. The compiler-based approach of Chestnut is up to factor 73 faster than previous approaches without affecting the accuracy adversely. On the binary analysis level, we demonstrate that the requirement of position-independent binaries of related work is not needed, enlarging the set of applications for which Chestnut is usable. In an optional second phase, Chestnut provides a dynamic refinement tool that allows restricting the set of allowed syscalls further. We demonstrate that Chestnut on average blocks 302 syscalls (86.5%) via the compiler and 288 (82.5%) using the binary-level analysis on a set of 18 widely used applications. We found that Chestnut blocks the dangerous exec syscall in 50% and 77.7% of the tested applications using the compiler- and binary-based approach, respectively. For the tested applications, Chestnut prevents exploitation of more than 62% of the 175 CVEs that target the kernel via syscalls. Finally, we perform a 6 month long-term study of a sandboxed Nginx server.
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- 2020
42. Control Tunning Approach and Digital Filter Application for Competitive Line Follower Robot.
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Johann S. J. C. C. Amorim, Jefferson H. O. Fernandes, André L. C. Canella, Tatiana M. B. Santos, José Lima 0001, and Milena F. Pinto
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- 2023
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43. Segmentation of skin layers in ultrasound images using a crowdsourcing and deep learning-based system.
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Maira B. H. Moran, Larissa Aparecida Vaz Oliveira, Marcelo Daniel Brito Faria, Luciana Freitas Bastos, Gilson A. Giraldi, Clarissa Canella, and Aura Conci
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- 2023
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44. An opportunity for acerola pulp (Malpighia emarginata DC) valorization evaluating its performance during the block cryoconcentration by physicochemical, bioactive compounds, HPLC–ESI-MS/MS, and multi-elemental profile analysis
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Marafon, Karine, Pereira-Coelho, Marina, da Silva Haas, Isabel Cristina, da Silva Monteiro Wanderley, Bruna Rafaela, de Gois, Jefferson Santos, Vitali, Luciano, Luna, Aderval S., Canella, Maria Helena Machado, Hernández, Eduard, de Mello Castanho Amboni, Renata Dias, and Prudencio, Elane Schwinden
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- 2024
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45. Ultrasound imaging of onychopapilloma: Evaluation of 43 cases
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Canella, Clarissa, Nakamura, Robertha, Leverone, Andreia, de Almeida, Carolina Ávila, Iorizzo, Matilde, and Yamada, Andre Fukunishi
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- 2024
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46. A new hydrobiid species (Caenogastropoda, Truncatelloidea) from insular Greece
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Radea, Canella, Lampri, Paraskevi Niki, Bakolitsas, Konstantinos, Parmakelis, Aristeidis, and Pensoft Publishers
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freshwater diversity ,Lefkada Island ,taxonomy ,valvatiform Hydrobiidae - Published
- 2021
47. Particle drift simulation from mesotrione and rimsulfuron plus thifensulfuron-methyl mixture through two nozzle types to field and vegetable crops
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Brankov, Milan, Alves, Guilherme Sousa, Vieira, Bruno Canella, Zaric, Milos, Vukoja, Barbara, Houston, Trenton, and Kruger, Greg R.
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- 2023
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48. Update in Imaging Evaluation of Bone and Soft Tissue Sarcomas
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Alex Guedes, Marcelo Bragança dos Reis Oliveira, Adelina Sanches de Melo, and Clarissa Canella Moraes do Carmo
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diagnostic imaging ,multimodal imaging ,neoplasms, connective tissue ,neoplasms, bone tissue ,radiology ,sarcoma ,Medicine ,Orthopedic surgery ,RD701-811 - Abstract
Abstract The evolution in imaging evaluation of musculoskeletal sarcomas contributed to a significant improvement in the prognosis and survival of patients with these neoplasms. The precise characterization of these lesions, using the most appropriate imaging modalities to each clinical condition presented, is of paramount importance in the design of the therapeutic approach to be instituted, with a direct impact on clinical outcomes. The present article seeks to update the reader regarding imaging methodologies in the context of local and systemic evaluation of bone sarcomas and soft tissues.
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- 2023
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49. Food additives and PAHO’s nutrient profile model as contributors’ elements to the identification of ultra-processed food products
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Daniela Silva Canella, Vanessa dos Santos Pereira Montera, Natália Oliveira, Laís Amaral Mais, Giovanna Calixto Andrade, and Ana Paula Bortoletto Martins
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Medicine ,Science - Abstract
Abstract The NOVA classification system categorizes foods according to the extent and purpose of industrial processing. Ultra-processed food products (UPF) are frequently composed of excessive amounts of sugars, salt, oils, and fats, and cosmetic additives designed to make them palatable and/or appealing. We aimed to describe the presence of critical nutrients in excess and cosmetic additives in packaged foods and beverages and to evaluate the proportion of UPF that can be correctly identified through the presence of critical nutrients in excess or the presence of cosmetic additives in food products. A total of 9851 items available in Brazilian supermarkets containing lists of ingredients and nutrition facts panels were analyzed. Cosmetic additives and critical nutrients in excess, according to Pan American Health Organization (PAHO)’s nutrient profile model, were assessed. All food items were categorized into the four NOVA classification groups. Relative frequencies of items with at least one critical nutrient in excess and one type of cosmetic additive were estimated. For UPF, 82.1% had some cosmetic additive, and 98.8% had some cosmetic additive or a nutrient in excess. This combined criterion allowed the identification of 100.0% of sweet cookies, salted biscuits, margarine, cakes and sweet pies, chocolate, dairy beverages, and ice cream. Combining the presence of cosmetic additives and the PAHO’s nutrient profile model contributes to the identification of UPF.
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- 2023
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50. Cancer survival stories: Perception, creation, and potential use case
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Claudia Canella, Martin Inderbitzin, Manuela Oehler, Claudia M. Witt, and Jürgen Barth
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cancer ,cancer survivors ,citizen science ,participatory research ,patient narratives ,patient education ,Medicine (General) ,R5-920 ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background Cancer patients often search for information about their health conditions online. Cancer patient narratives have established themselves as a way of providing information and education but also as an effective approach to improving coping with the disease. Objective We investigated how people affected by cancer perceive cancer patient narratives and whether such stories can potentially improve coping during their own cancer journeys. Additionally, we reflected on whether our co‐creative citizen science approach can contribute to gaining knowledge about cancer survival stories and providing peer support. Design, Setting and Stakeholders We applied a co‐creative citizen science approach by using quantitative and qualitative research methods with stakeholders (i.e., cancer patients, their relatives, friends and health professionals). Main Outcome Measures Understandability and perceived benefits of cancer survival stories, coping, emotional reactions to the stories and helpful characteristics of the stories. Results Cancer survival stories were considered intelligible and beneficial, and they potentially support positive emotions and coping in people affected by cancer. Together with the stakeholders, we identified four main characteristics that evoked positive emotions and that were considered especially helpful: (1) positive attitudes towards life, (2) encouraging cancer journeys, (3) individual coping strategies for everyday challenges and (4) openly shared vulnerabilities. Conclusions Cancer survival stories potentially support positive emotions and coping in people affected by cancer. A citizen science approach is suitable for identifying relevant characteristics of cancer survival stories and may become a helpful educational peer support resource for people coping with cancer. Patient or Public Contributions We adopted a co‐creative citizen science approach, wherein citizens and researchers were equally involved throughout the entire project.
- Published
- 2023
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