189,212 results on '"Antoni, A"'
Search Results
202. Do large language models resolve semantic ambiguities in the same way as humans? The case of word segmentation in Chinese sentence reading
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Liao, Weiyan, Wang, Zixuan, Shum, Kathy, Chan, Antoni B., and Hsiao, Janet
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Psychology ,Reading ,Eye tracking ,Large Language Models - Abstract
Large language models (LLMs) were trained to predict words without having explicit semantic word representations as humans do. Here we compared LLMs and humans in re-solving semantic ambiguities at the word/token level by ex-amining the case of segmenting overlapping ambiguous strings in Chinese sentence reading, where three characters “ABC” could be segmented in either “AB/C” or “A/BC” depending on the context. We showed that although LLMs performed worse than humans, they demonstrated a similar interaction effect between segmentation structure and word frequency order, suggesting that this effect observed in humans could be accounted for by statistical learning of word/token occurrence regularities without assuming an explicit semantic word representation. Nevertheless, across stimuli LLMs' responses were not correlated with any hu-man performance or eye movement measures, suggesting differences in the underlying processing mechanisms. Thus, it is essential to understand these differences through XAI methods to facilitate LLM adoption.
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- 2024
203. Demystify Deep-learning AI for Object Detection using Human Attention Data
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Zhang, Jinhan, Liu, Guoyang, Chen, Yunke, Chan, Antoni B., and Hsiao, Janet
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Artificial Intelligence ,Psychology ,Attention ,Perception ,Eye tracking ,Neural Networks - Abstract
Here we present a new Explainable AI (XAI) method to probe the functional partition in AI models by comparing features attended to at different layers with human attention driven by diverse task demands. We applied this method to explain an object detector Yolo-v5s in multi-category and single-category object detection tasks. We found that the model's neck showed higher similarity to human attention during object detection, indicating a reliance on diagnostic features in the neck, whereas its backbone showed higher similarity to attention during passive viewing, indicating salient local features encoded. With this understanding of its functional partition, using Yolo-v5s as a model for human cognition, our comparative analysis against human attention when providing explanations for object detection revealed that humans attended to a combination of diagnostic and salient features during explaining multi-category general object detection but attended to mainly diagnostic features when explaining single-category human/vehicle detection in driving scenarios.
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- 2024
204. Eye Movement Behavior during Mind Wandering across Different Tasks in Interactive Online Learning
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Teng, Xiaoru, Lan, Hui, Wong, Gloria, Chan, Antoni B., and Hsiao, Janet
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Psychology ,Attention ,Learning ,Eye tracking - Abstract
The recent surge in online learning demands better ways to monitor students' mind wandering (MW) episodes. We examined whether different eye movement measures were associated with MW in tasks with different cognitive demands. We found that a reduced number of fixations was associated with MW in tasks involving searching for information without clearly defined strategies. A larger variance in pupil diameter, as well as reduced eye movement consistency, were associated with MW when imagining a scenario with a central fixation. Reduced eye movement consistency, as well as reduced joint attention with another participant, were both associated with MW in tasks involving a clearly defined strategy. Interestingly, none of these eye movement measures was associated with MW in tasks involving well-learned visual routines such as face and scene identification, suggesting idiosyncrasy in eye movement behavior in these tasks. These findings have important implications for developing effective methods for detecting MW.
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- 2024
205. CAR-T cell therapy targeting surface expression of TYRP1 to treat cutaneous and rare melanoma subtypes
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Jilani, Sameeha, Saco, Justin D, Mugarza, Edurne, Pujol-Morcillo, Aleida, Chokry, Jeffrey, Ng, Clement, Abril-Rodriguez, Gabriel, Berger-Manerio, David, Pant, Ami, Hu, Jane, Gupta, Rubi, Vega-Crespo, Agustin, Baselga-Carretero, Ignacio, Chen, Jia M, Shin, Daniel Sanghoon, Scumpia, Philip, Radu, Roxana A, Chen, Yvonne, Ribas, Antoni, and Puig-Saus, Cristina
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Biomedical and Clinical Sciences ,Oncology and Carcinogenesis ,Immunology ,Gene Therapy Clinical Trials ,Clinical Trials and Supportive Activities ,Orphan Drug ,Rare Diseases ,Gene Therapy ,Vaccine Related ,Genetics ,Immunization ,Cancer ,Clinical Research ,Immunotherapy ,Biotechnology ,5.1 Pharmaceuticals ,5.2 Cellular and gene therapies ,Humans ,Mice ,Animals ,Melanoma ,Receptors ,Chimeric Antigen ,Immunotherapy ,Adoptive ,Uveal Neoplasms ,Cell- and Tissue-Based Therapy ,Membrane Glycoproteins ,Oxidoreductases - Abstract
A major limitation to developing chimeric antigen receptor (CAR)-T cell therapies for solid tumors is identifying surface proteins highly expressed in tumors but not in normal tissues. Here, we identify Tyrosinase Related Protein 1 (TYRP1) as a CAR-T cell therapy target to treat patients with cutaneous and rare melanoma subtypes unresponsive to immune checkpoint blockade. TYRP1 is primarily located intracellularly in the melanosomes, with a small fraction being trafficked to the cell surface via vesicular transport. We develop a highly sensitive CAR-T cell therapy that detects surface TYRP1 in tumor cells with high TYRP1 overexpression and presents antitumor activity in vitro and in vivo in murine and patient-derived cutaneous, acral and uveal melanoma models. Furthermore, no systemic or off-tumor severe toxicities are observed in an immunocompetent murine model. The efficacy and safety profile of the TYRP1 CAR-T cell therapy supports the ongoing preparation of a phase I clinical trial.
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- 2024
206. Lipopolysaccharide-induced chronic inflammation increases female serum gonadotropins and shifts the pituitary transcriptomic landscape
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Garcia, Christopher, Velez, Leandro M, Ujagar, Naveena, Del Mundo, Zena, Nguyen, Thu, Fox, Chelsea, Mark, Adam, Fisch, Kathleen M, Lawson, Mark A, Duleba, Antoni J, Seldin, Marcus M, and Nicholas, Dequina A
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Biomedical and Clinical Sciences ,Clinical Sciences ,Women's Health ,Infertility ,Contraception/Reproduction ,Genetics ,2.1 Biological and endogenous factors ,1.1 Normal biological development and functioning ,Female ,Animals ,Mice ,Lipopolysaccharides ,Pituitary Gland ,Gene Expression Profiling ,Transcriptome ,Gonadotropins ,Pituitary ,Pituitary Diseases ,Inflammation ,pituitary ,FSH & LH ,lipopolysaccharide ,inflammation ,estrous ,secretion ,Nutrition and Dietetics ,Clinical sciences - Abstract
IntroductionFemale reproductive function depends on a choreographed sequence of hormonal secretion and action, where specific stresses such as inflammation exert profound disruptions. Specifically, acute LPS-induced inflammation inhibits gonadotropin production and secretion from the pituitary, thereby impacting the downstream production of sex hormones. These outcomes have only been observed in acute inflammatory stress and little is known about the mechanisms by which chronic inflammation affects reproduction. In this study we seek to understand the chronic effects of LPS on pituitary function and consequent luteinizing and follicle stimulating hormone secretion.MethodsA chronic inflammatory state was induced in female mice by twice weekly injections with LPS over 6 weeks. Serum gonadotropins were measured and bulk RNAseq was performed on the pituitaries from these mice, along with basic measurements of reproductive biology.ResultsSurprisingly, serum luteinizing and follicle stimulating hormone was not inhibited and instead we found it was increased with repeated LPS treatments.DiscussionAnalysis of bulk RNA-sequencing of murine pituitary revealed paracrine activation of TGFβ pathways as a potential mechanism regulating FSH secretion in response to chronic LPS. These results provide a framework with which to begin dissecting the impacts of chronic inflammation on reproductive physiology.
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- 2024
207. Correction: The impact of primers for wood bonding on beech wood’s Young’s modulus
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Böger, Thomas, Engelhardt, Max, Richter, Klaus, and Sanchez-Ferrer, Antoni
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- 2025
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208. Colistin treatment causes neuronal loss and cognitive impairment via ros accumulation and neuronal plasticity alterations
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Guzman, Laura, Parcerisas, Antoni, Cano, Amanda, Sánchez-López, Elena, Verdaguer, Ester, Auladell, Carme, Cajal, Yolanda, Barenys, Marta, Camins, Antoni, Rabanal, Francesc, and Ettcheto, Miren
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- 2025
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209. Insights on physiological, antioxidant and flowering response to salinity stress of two candidate ornamental species: the native coastal geophytes Pancratium maritimum L. and Eryngium maritimum L
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Cerrato, Marcello Dante, Mir-Rosselló, Pere Miquel, Cortés-Fernández, Iván, Ribas-Serra, Arnau, Douthe, Cyril, Cardona, Carles, Sureda, Antoni, Flexas, Jaume, and Gil Vives, Lorenzo
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- 2024
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210. Krüppel-like factors: potential roles in blood-brain barrier dysfunction and epileptogenesis
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Santos, Ana Beatriz, Carona, Andreia, Ettcheto, Miren, Camins, Antoni, Falcão, Amílcar, Fortuna, Ana, and Bicker, Joana
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- 2024
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211. Early Identification and Management of Patients with Rash on Apalutamide
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Birtle, Alison J., Formisano, Luigi, Descamps, Vincent, Weisenseel, Peter, and Vilaseca, Antoni
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- 2024
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212. Cannabinoid Modulation of Monoamine Levels in Mouse Brain: Unveiling Neurochemical Dynamics through an Innovative High-performance Liquid Chromatography-Fluorescence Detection Bioanalysis
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Carla, Fonseca, Susana, Cunha, Ricardo, Ferreira, Mariana, Lapo Pais, Joana, Gonçalves, Antoni, Camins, Miren, Ettcheto, Rui, Barbosa, and Ana, Fortuna
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- 2024
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213. Post-traumatic stress and joint hypermobility in children and adolescents of Nepal after exposure to an earthquake
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Llach, Cristian-Daniel, Pailhez, Guillem, Conejo-Gonzalez, Carla, Singh, Pradip Man, and Bulbena, Antoni
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- 2024
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214. Do Children with High Callous-Unemotional Traits Have Attentional Deficits to Emotional Stimuli? Evidence from a Multi-Method and Multi-Informant Study
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Ivanova-Serokhvostova, Anastasiya, Fanti, Kostas, Bonillo, Albert, Supèr, Hans, Corrales, Montserrat, Pérez-Bonaventura, Iris, Pamias, Montserrat, Ramos-Quiroga, Antoni J., Torrubia, Rafael, Nadal, Roser, Frick, Paul J., and Molinuevo, Beatriz
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- 2024
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215. Enhancing Compressive Strength of Very High Volume Fly Ash Concrete Using Low Molarity Alkali Solution and Thermal Activation
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Santosa, Samuel, Antoni, Antoni, and Hardjito, Djwantoro
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- 2024
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216. TAENet: transencoder-based all-in-one image enhancement with depth awareness
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Fang, Wanchuan, Wang, Chuansheng, Li, Zuoyong, Grau, Antoni, Lai, Taotao, and Chen, Jianzhang
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- 2024
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217. Familism, family cohesion, and health-related quality of life in Hispanic prostate cancer survivors
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Pedreira, Patricia B., Fleszar-Pavlović, Sara E., Walsh, Emily A., Noriega Esquives, Blanca, Moreno, Patricia I., Perdomo, Dolores, Heller, Aaron S., Antoni, Michael H., and Penedo, Frank J.
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- 2024
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218. Is social capital bridging or bonding? Evidence from a field experiment with association members
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Degli Antoni, Giacomo and Grimalda, Gianluca
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- 2024
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219. Functions of Resiliency Traits and Processes in Differential Effects of CBSM on Quality of Life in Breast Cancer Survivors: A Moderated Mediation Model
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St Fleur, Ruth G., St George, Sara M., Feaster, Daniel J., Lee, Tae Kyoung, and Antoni, Michael H.
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- 2024
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220. Screening for liver fibrosis: lessons from colorectal and lung cancer screening
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Thiele, Maja, Kamath, Patrick S., Graupera, Isabel, Castells, Antoni, de Koning, Harry J., Serra-Burriel, Miquel, Lammert, Frank, and Ginès, Pere
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- 2024
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221. Switching to Interleukin-23 Inhibitors After Ineffectiveness of Ustekinumab: Evaluating Real-World Outcomes in Psoriasis Treatment
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Thomas, Sarah E., Seyger, Marieke M. B., Mangnus, Josje E., Otero, Marisol E., Gostynski, Antoni H., Njoo, Marcellus D., Ossenkoppele, Paul M., Haeck, Inge M., Hendricksen-Roelofzen, Judith H. J., Körver, John E. M., Dodemont, Sharon R. P., Tupker, Ron A., Berends, Maartje A. M., Weppner-Parren, Lizelotte M. J. T., Keijsers, Romy R. M. C., Oostveen, Annet M., Peters, Bas, Mommers, Roland, van Doorn, Martijn B. A., Tjioe, Milan, Veldkamp, Wendelien R., Kuijpers, Astrid L. A., Kleinpenning, Marloes M., de Jong, Elke M. G. J., and van den Reek, Juul M. P. A.
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- 2024
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222. CTNND1 is involved in germline predisposition to early-onset gastric cancer by affecting cell-to-cell interactions
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Herrera-Pariente, Cristina, Bonjoch, Laia, Muñoz, Jenifer, Fernàndez, Guerau, Soares de Lima, Yasmin, Mahmood, Romesa, Cuatrecasas, Miriam, Ocaña, Teresa, Lopez-Prades, Sandra, Llargués-Sistac, Gemma, Domínguez-Rovira, Xavier, Llach, Joan, Luzko, Irina, Díaz-Gay, Marcos, Lazaro, Conxi, Brunet, Joan, Castillo-Manzano, Carmen, García-González, María Asunción, Lanas, Angel, Carrillo, Marta, Hernández San Gil, Raquel, Quintero, Enrique, Sala, Nuria, Llort, Gemma, Aguilera, Lara, Carot, Laura, Diez-Redondo, Pilar, Jover, Rodrigo, Ramon y Cajal, Teresa, Cubiella, Joaquín, Castells, Antoni, Balaguer, Francesc, Bujanda, Luis, Castellví-Bel, Sergi, and Moreira, Leticia
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- 2024
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223. Cu/ZnO/CeO2 Supported on MOF-5 as a Novel Catalyst for the CO2 Hydrogenation to Methanol: A Mechanistic Study on the Effect of CeO2 and MOF-5 on Active Sites
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Vali, Seyed Alireza, Moral-Vico, Javier, Font, Xavier, and Sánchez, Antoni
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- 2024
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224. Exploring extreme brightness variations in blue supergiant MACHO 80.7443.1718: Evidence for companion-driven enhanced mass loss
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Kołaczek-Szymański, Piotr Antoni, Łojko, Piotr, Pigulski, Andrzej, Różański, Tomasz, and Moździerski, Dawid
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Astrophysics - Solar and Stellar Astrophysics ,Astrophysics - High Energy Astrophysical Phenomena - Abstract
Evolution of massive stars is dominated by interactions within binary systems. Therefore, it is necessary to investigate all forms of interaction in binary systems that may affect the evolution of the components. One of such laboratories is the massive eccentric binary system MACHO$\,$80.7443.1718 (ExtEV). We examine whether the light variability of the ExtEV can be explained by a wind-wind collision (WWC) binary system model. We conducted an analysis of broadband multi-color photometry of ExtEV, time-series space photometry from TESS, ground-based Johnson $UBV$ photometry, and time-series spectroscopy. We fitted an analytical model of light variations to the TESS light curve of ExtEV. We rule out the possibility of the presence of a disk around the primary component. We also argue that the non-linear wave-breaking scenario may not be consistent with the observations of ExtEV. We refine the orbital parameters of ExtEV and find evidence for the presence of a tertiary component. Using evolutionary models we demonstrate that the primary component's mass is between 25 and 45$\,$M$_\odot$. We successfully reproduce light curve of ExtEV with our model, showing that the dominant processes shaping its light curve are atmospheric eclipse and light scattered in the WWC cone. We also estimate the primary's mass-loss rate due to stellar wind for $4.5\cdot 10^{-5}\,$M$_\odot\,{\rm yr}^{-1}$. We conclude that ExtEV is not an extreme eccentric ellipsoidal variable, but an exceptional WWC binary system. The mass loss rate we derived exceeds theoretical predictions by up to two orders of magnitude. This implies that the wind is likely enhanced by tidal interactions, rotation, and possibly also tidally excited oscillations. ExtEV represents a rare evolutionary phase of a binary system that may help to understand the role of a companion-driven enhanced mass loss in the evolution of massive binary systems., Comment: Accepted for publication in Astronomy&Astrophysics, 23 pages, 15 figures, 10 tables
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- 2023
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225. Bayesian inference of binary black holes with inspiral-merger-ringdown waveforms using two eccentric parameters
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Ramos-Buades, Antoni, Buonanno, Alessandra, and Gair, Jonathan
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General Relativity and Quantum Cosmology ,Astrophysics - High Energy Astrophysical Phenomena ,Astrophysics - Instrumentation and Methods for Astrophysics - Abstract
Orbital eccentricity is a crucial physical effect to unveil the origin of compact-object binaries detected by ground- and spaced-based gravitational-wave (GW) observatories. Here, we perform for the first time a Bayesian inference study of inspiral-merger-ringdown eccentric waveforms for binary black holes with non-precessing spins using two (instead of one) eccentric parameters: eccentricity and relativistic anomaly. We employ for our study the multipolar effective-one-body (EOB) waveform model SEOBNRv4EHM, and use initial conditions such that the eccentric parameters are specified at an orbit-averaged frequency. We show that this new parametrization of the initial conditions leads to a more efficient sampling of the parameter space. We also assess the impact of the relativistic-anomaly parameter by performing mock-signal injections, and we show that neglecting such a parameter can lead to significant biases in several binary parameters. We validate our model with mock-signal injections based on numerical-relativity waveforms, and we demonstrate the ability of the model to accurately recover the injected parameters. Finally, using standard stochastic samplers employed by the LIGO-Virgo-KAGRA Collaboration, we analyze a set of real GW signals observed by the LIGO-Virgo detectors during the first and third runs. We do not find clear evidence of eccentricity in the signals analyzed, more specifically we measure $e^{\text{GW150914}}_{\text{gw, 10Hz}}= 0.08^{+0.09}_{-0.06}$, $e^{\text{GW151226}}_{\text{gw, 20Hz}}= {0.04}^{+0.05}_{-0.04} $, and $e^{\text{GW190521}}_{\text{gw, 5.5Hz}}= 0.15^{+0.12}_{-0.12}$.
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- 2023
226. Two remarks on the set of recurrent vectors
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López-Martínez, Antoni and Menet, Quentin
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Mathematics - Functional Analysis ,Mathematics - Dynamical Systems ,47A16, 37B20, 46B87 - Abstract
We solve in the negative two open problems, related to the linear and topological structure of the set of recurrent vectors, asked by Sophie Grivaux, Alfred Peris and the first author of this paper. Firstly, we show that there exist recurrent operators whose set of recurrent vectors is not dense lineable; and secondly, we construct operators which are reiteratively recurrent and cyclic, but whose set of reiteratively recurrent vectors is meager., Comment: 17 pages
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- 2023
227. Scalable Video Object Segmentation with Simplified Framework
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Wu, Qiangqiang, Yang, Tianyu, WU, Wei, and Chan, Antoni
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Computer Science - Computer Vision and Pattern Recognition - Abstract
The current popular methods for video object segmentation (VOS) implement feature matching through several hand-crafted modules that separately perform feature extraction and matching. However, the above hand-crafted designs empirically cause insufficient target interaction, thus limiting the dynamic target-aware feature learning in VOS. To tackle these limitations, this paper presents a scalable Simplified VOS (SimVOS) framework to perform joint feature extraction and matching by leveraging a single transformer backbone. Specifically, SimVOS employs a scalable ViT backbone for simultaneous feature extraction and matching between query and reference features. This design enables SimVOS to learn better target-ware features for accurate mask prediction. More importantly, SimVOS could directly apply well-pretrained ViT backbones (e.g., MAE) for VOS, which bridges the gap between VOS and large-scale self-supervised pre-training. To achieve a better performance-speed trade-off, we further explore within-frame attention and propose a new token refinement module to improve the running speed and save computational cost. Experimentally, our SimVOS achieves state-of-the-art results on popular video object segmentation benchmarks, i.e., DAVIS-2017 (88.0% J&F), DAVIS-2016 (92.9% J&F) and YouTube-VOS 2019 (84.2% J&F), without applying any synthetic video or BL30K pre-training used in previous VOS approaches., Comment: ICCV-2023
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- 2023
228. Edit Temporal-Consistent Videos with Image Diffusion Model
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Wang, Yuanzhi, Li, Yong, Zhang, Xiaoya, Liu, Xin, Dai, Anbo, Chan, Antoni B., and Cui, Zhen
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Computer Science - Computer Vision and Pattern Recognition - Abstract
Large-scale text-to-image (T2I) diffusion models have been extended for text-guided video editing, yielding impressive zero-shot video editing performance. Nonetheless, the generated videos usually show spatial irregularities and temporal inconsistencies as the temporal characteristics of videos have not been faithfully modeled. In this paper, we propose an elegant yet effective Temporal-Consistent Video Editing (TCVE) method to mitigate the temporal inconsistency challenge for robust text-guided video editing. In addition to the utilization of a pretrained T2I 2D Unet for spatial content manipulation, we establish a dedicated temporal Unet architecture to faithfully capture the temporal coherence of the input video sequences. Furthermore, to establish coherence and interrelation between the spatial-focused and temporal-focused components, a cohesive spatial-temporal modeling unit is formulated. This unit effectively interconnects the temporal Unet with the pretrained 2D Unet, thereby enhancing the temporal consistency of the generated videos while preserving the capacity for video content manipulation. Quantitative experimental results and visualization results demonstrate that TCVE achieves state-of-the-art performance in both video temporal consistency and video editing capability, surpassing existing benchmarks in the field., Comment: 10 pages, 7 figures
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- 2023
229. Modular System Synthesis
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Park, Kanghee, Johnson, Keith J. C., D'Antoni, Loris, and Reps, Thomas
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Computer Science - Programming Languages - Abstract
This paper describes a way to improve the scalability of program synthesis by exploiting modularity: larger programs are synthesized from smaller programs. The key issue is to make each "larger-created-from-smaller" synthesis sub-problem be of a similar nature, so that the kind of synthesis sub-problem that needs to be solved--and the size of each search space--has roughly the same character at each level. This work holds promise for creating program-synthesis tools that have far greater capabilities than currently available tools, and opens new avenues for synthesis research: how synthesis tools should support modular system design, and how synthesis applications can best exploit such capabilities.
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- 2023
230. Framework for additive manufacturing of porous Inconel 718 for electrochemical applications
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Zafari, Ahmad, Kiran, Kiran, Gimenez-Garcia, Inmaculada, Forner-Cuenca, Antoni, Xia, Kenong, Gibson, Ian, and Jafari, Davoud
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Condensed Matter - Materials Science ,Physics - Chemical Physics - Abstract
Porous electrodes were developed using laser powder bed fusion of Inconel 718 lattice structures and electrodeposition of a porous nickel catalytic layer. Laser energy densities of ~83-333 J/m were used to fabricate ~500 um thick electrodes made of body centered cubic unit cells of 200-500 um and strut thicknesses of 100-200 um. Unit cells of 500 um and strut thickness of 200 um were identified as optimum. Despite small changes in feature sizes by the energy input, the porosity of >50% and pore size of ~100 um did not change. In a subsequent step, we used nickel electrodeposition to create smaller scale pores on the electrode. The electrochemical performance of the electrodes for hydrogen/oxygen evolution reaction (HER/OER) was evaluated in a three-electrode setup. For HER, a much larger maximum current density of ~ -372 mA/cm2 at a less negative potential of ~-0.4 V vs RHE (potential against reversible hydrogen electrode) was obtained in the nickel-coated samples, as compared to -240 mA/cm2 at ~-0.6 V in the bare one, indicating superior performance of the coated sample. Conversely, OER exhibited minor performance differences upon application of the coating, indicating insignificant dependence of OER to surface composition and available surface.
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- 2023
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231. Probing proton structure with $c \bar c$ correlations in ultraperipheral $pA$ collisions
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Linek, Barbara, Łuszczak, Agnieszka, Łuszczak, Marta, Pasechnik, Roman, Schäfer, Wolfgang, and Szczurek, Antoni
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High Energy Physics - Phenomenology - Abstract
We study the exclusive diffractive $c \bar c$ photoproduction in ultraperipheral $pA$ collisions. The formalism makes use of off-diagonal generalizations of the unintegrated gluon distribution, the so-called generalized transverse momentum dependent distributions (GTMDs). We present two different formulations. The first one is based directly on gluon GTMD parametrizations in momentum space. Another option is the calculation of the GTMD as a Fourier transform of the dipole-nucleon scattering amplitude $N(Y,\vec{r}_{\perp},\vec{b}_{\perp})$. The latter approach requires some extra regularization discussed in the paper. Different dipole amplitudes from the literature are used. Compared to previous calculations in the literature, we integrate over the full phase space and therefore cross sections for realistic conditions are obtained. We present distributions in rapidity of $c$ or $\bar c$, transverse momentum of the $c \bar c$ pair, four-momentum transfer squared as well as the azimuthal correlation between a sum and a difference of the $c$ and $\bar c$ transverse momenta. The azimuthal correlations are partially due to the so-called elliptic gluon Wigner distribution. Different models lead to different modulations in the azimuthal angle. The modulations are generally smaller than 5%. They depend on the range of transverse momentum selected for the calculation., Comment: 22 pages, 14 figures, 1 table
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- 2023
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232. Exposing Hypersensitivity in Quantum Chaotic Dynamics
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Grudka, Andrzej, Kurzyński, Paweł, Sajna, Adam S., Wójcik, Jan, and Wójcik, Antoni
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Quantum Physics - Abstract
We demonstrate that the unitary dynamics of a multi-qubit system can display hypersensitivity to initial state perturbation. This contradicts the common belief that the classical approach based on the exponential divergence of initially neighboring trajectories cannot be applied to identify chaos in quantum systems. To observe hypersensitivity we use quantum state-metric, introduced by Girolami and Anza in [Phys. Rev. Lett. 126 (2021) 170502], which can be interpreted as a quantum Hamming distance. As an example of a quantum system, we take the multi-qubit implementation of the quantum kicked top, a paradigmatic system known to exhibit quantum chaotic behavior. Our findings confirm that the observed hypersensitivity corresponds to commonly used signatures of quantum chaos. Furthermore, we demonstrate that the proposed metric can detect quantum chaos in the same regime and under analogous initial conditions as in the corresponding classical case., Comment: 6 pages, 3 figures
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- 2023
233. Different versions of soft-photon theorems exemplified at leading and next-to-leading terms for pion-pion and pion-proton scattering
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Lebiedowicz, Piotr, Nachtmann, Otto, and Szczurek, Antoni
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High Energy Physics - Phenomenology ,High Energy Physics - Experiment ,High Energy Physics - Theory - Abstract
We investigate the photon emission in pion-pion and pion-proton scattering in the soft-photon limit where the photon energy $\omega \to 0$. The expansions of the $\pi^{-} \pi^{0} \to \pi^{-} \pi^{0} \gamma$ and the $\pi^{\pm} p \to \pi^{\pm} p \gamma$ amplitudes, satisfying the energy-momentum relations, to the orders $\omega^{-1}$ and $\omega^{0}$ are derived. We show that these terms can be expressed completely in terms of the on-shell amplitudes for $\pi^{-} \pi^{0} \to \pi^{-} \pi^{0}$ and $\pi^{\pm} p \to \pi^{\pm} p$, respectively, and their partial derivatives with respect to $s$ and $t$. The~structure term which is non singular for $\omega \to 0$ is determined to the order $\omega^{0}$ from the gauge-invariance constraint using the generalized Ward identities for pions and the proton. For the reaction $\pi^{-} \pi^{0} \to \pi^{-} \pi^{0} \gamma$ we discuss in detail the soft-photon theorems in the versions of both F.E. Low and S. Weinberg. We show that these two versions are different and must not be confounded. Weinberg's version gives the pole term of a Laurent expansion in $\omega$ of the amplitude for $\pi^{-} \pi^{0} \to \pi^{-} \pi^{0} \gamma$ around the phase-space point of zero radiation. Low's version gives an approximate expression for the above amplitude at a fixed phase-space point, corresponding to non-zero radiation. Clearly, the leading and next-to-leading terms in theses two approaches must be, and are indeed, different. We show their relation. We also discuss the expansions of differential cross sections for $\pi^{-} \pi^{0} \to \pi^{-} \pi^{0} \gamma$ with respect to $\omega$ for $\omega \to 0$., Comment: 16 pages, 9 figure, v2 contains extended discussion on different versions of soft-photon theorems and added references, v3 is equivalent to the PRD version
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- 2023
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234. Soft-photon theorem for pion-proton elastic scattering revisited
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Lebiedowicz, Piotr, Nachtmann, Otto, and Szczurek, Antoni
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High Energy Physics - Phenomenology ,High Energy Physics - Theory - Abstract
We discuss the reactions $\pi p \to \pi p$ and $\pi p \to \pi p \gamma$ from a general quantum field theory (QFT) point of view, describing these reactions in QCD and lowest relevant order of electromagnetism. We consider the pion-proton elastic scattering both off shell and on shell. The on-shell amplitudes for $\pi^{\pm} p \to \pi^{\pm} p$ scattering are described by two invariant amplitudes, while the off-shell amplitudes contain eight invariant amplitudes. We study the photon emission amplitudes in the soft-photon limit where the c.m. photon energy $\omega \to 0$. The Laurent expansion in $\omega$ of the $\pi^{\pm} p \to \pi^{\pm} p \gamma$ amplitudes is considered and the terms of the orders $\omega^{-1}$ and $\omega^{0}$ are derived. These terms can be expressed by the on-shell invariant amplitudes and their partial derivatives with respect to $s$ and $t$. The pole term $\propto \omega^{-1}$ in the amplitudes corresponds to Weinberg's soft-photon theorem and is well known from the literature. We derive the next-to-leading term $\propto \omega^{0}$ using only rigorous methods of QFT. We give the relation of the Laurent series for $\pi^{0} p \to \pi^{0} p \gamma$ and Low's soft-photon theorem. Our formulas for the amplitudes in the limit $\omega \to 0$ are valid for photon momentum $k$ satisfying $k^{2} \geqslant 0$, $k^{0} = \omega \geqslant 0$, that is, for both real and virtual photons. Here we consider a limit where with $\omega \to 0$ we have also $k^{2} \to 0$. We discuss the behavior of the corresponding cross-sections for $\pi^{-} p \to \pi^{-} p \gamma$ with respect to $\omega$ for $\omega \to 0$. We consider cross sections for unpolarized as well as polarized protons in the initial and final states., Comment: 36 pages, 5 figures, v3 accepted for publication in PRD
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- 2023
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235. Extending black-hole remnant surrogate models to extreme mass ratios
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Boschini, Matteo, Gerosa, Davide, Varma, Vijay, Armaza, Cristobal, Boyle, Michael, Bonilla, Marceline S., Ceja, Andrea, Chen, Yitian, Deppe, Nils, Giesler, Matthew, Kidder, Lawrence E., Kumar, Prayush, Lara, Guillermo, Long, Oliver, Ma, Sizheng, Mitman, Keefe, Nee, Peter James, Pfeiffer, Harald P., Ramos-Buades, Antoni, Scheel, Mark A., Vu, Nils L., and Yoo, Jooheon
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General Relativity and Quantum Cosmology ,Astrophysics - High Energy Astrophysical Phenomena - Abstract
Numerical-relativity surrogate models for both black-hole merger waveforms and remnants have emerged as important tools in gravitational-wave astronomy. While producing very accurate predictions, their applicability is limited to the region of the parameter space where numerical-relativity simulations are available and computationally feasible. Notably, this excludes extreme mass ratios. We present a machine-learning approach to extend the validity of existing and future numerical-relativity surrogate models toward the test-particle limit, targeting in particular the mass and spin of post-merger black-hole remnants. Our model is trained on both numerical-relativity simulations at comparable masses and analytical predictions at extreme mass ratios. We extend the gaussian-process-regression model NRSur7dq4Remnant, validate its performance via cross validation, and test its accuracy against additional numerical-relativity runs. Our fit, which we dub NRSur7dq4EmriRemnant, reaches an accuracy that is comparable to or higher than that of existing remnant models while providing robust predictions for arbitrary mass ratios., Comment: 10 pages, 3 figures. Published in PRD. Model publicly available at https://pypi.org/project/surfinBH
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- 2023
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236. The General Apple Property and Boolean terms in Integral Bounded Residuated Lattice-ordered Commutative Monoids
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Torrell, Antoni Torrens
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Mathematics - Logic ,08A72, 03C05, 03G99, 06D35 - Abstract
In this paper we give equational presentations of the varieties of {\em integral bounded residuated lattice-ordered commutative monoids} (bounded residuated lattices for short) satisfying the \emph{General Apple Property} (GAP), that is, varieties in which all of its directly indecomposable members are local. This characterization is given by means of Boolean terms: \emph{A variety $\mathsf{V}$ of \brl s has GAP iff there is an unary term $b(x)$ such that $\mathsf{V}$ satisfies the equations $b(x)\lor\neg b(x)\approx \top$ and $(x^k\to b(x))\cdot(b(x)\to k.x)\approx \top$, for some $k>0$}. Using this characterization, we show that for any variety $\mathsf{V}$ of bounded residuated lattice satisfying GAP there is $k>0$ such that the equation $k.x\lor k.\neg x\approx \top$ holds in $\mathsf{V}$, that is, $\mathsf{V} \subseteq \mathsf{WL_\mathsf{k}}$. As a consequence we improve Theorem 5.7 of \cite{CT12}, showing in theorem that a\emph{ variety of \brls\ has Boolean retraction term if and only if there is $k>0$ such that it satisfies the equation $k.x^k\lor k.(\neg x)^k\approx\top$.} We also see that in Bounded residuated lattices GAP is equivalent to Boolean lifting property (BLP) and so, it is equivalent to quasi-local property (in the sense of \cite{GLM12}). Finally, we prove that a variety of \brl s has GAP and its semisimple members form a variety if and only if there exists an unary term which is simultaneously Boolean and radical for this variety., Comment: 25 pages, 1 figure, 2 tables
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- 2023
237. A longitudinal prospective study of active tuberculosis in a Western Europe setting: insights and findings
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Romero-Tamarit, Arantxa, Vallès, Xavier, Munar-García, María, Espinosa-Pereiro, Juan, Saborit, Núria, Tortola, Ma. Teresa, Stojanovic, Zoran, Roure, Sílvia, Antuori, Adrián, Cardona, Pere-Joan, Soriano-Arandes, Antoni, Martin-Nalda, Andrea, Espiau, María, de Souza-Galvão, Maria Luiza, Jiménez, Ma. Ángeles, Noguera-Julian, Antoni, Molina, Israel, Casas, Xavier, Domínguez-Álvarez, Marisol, Jové, Neus, Gogichadze, Nino, L. Fonseca, Kaori, Arias, Lilibeth, Millet, Joan-Pau, Sánchez-Montalvá, Adrián, and Vilaplana, Cristina
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- 2024
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238. Global education policy movement: evolving contexts and research approaches
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Edwards, D. Brent, author, Verger, Antoni, author, McKenzie, Marcia, author, Takayama, Keita, author, Edwards, D. Brent, Jr., editor, Verger, Antoni, editor, McKenzie, Marcia, editor, and Takayama, Keita, editor
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- 2024
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239. Teacher Autonomy in the Age of Performance-Based Accountability: A Review Based on Teaching Profession Regulatory Models (2017-2020)
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Parcerisa, Lluís, Verger, Antoni, Pagès, Marcel, and Browes, Natalie
- Abstract
In recent decades, the governance of educational systems has experienced dramatic changes in many countries. Schools have been given more autonomy whilst being held increasingly accountable at the central level through standardized testing and other forms of external evaluation. The mechanisms of performance-based accountability (PBA) and the consequences attached to test results vary. In high-stakes systems, teachers' careers are more directly connected to students' performance, and low performing schools might risk closure, whereas in lower-stakes systems, the official administrative consequences of accountability for school actors are more symbolic than material. The main aim of this paper is to understand the impact of different forms of PBA on teachers' work from a comparative perspective. Most research on this topic is based on single-context case studies, which makes it difficult to understand the impact of policy factors and professional contexts in teachers' decisions and autonomy. To address this challenge, we review recent investigations (2017-2020) on the topic and compare their findings in different teachers' regulatory contexts. The review includes 101 articles from the SCOPUS and Web of Science databases. We find that evidence on the impact of PBA on teachers' perceptions and beliefs are variegated, and that the implications of PBA on teachers' autonomy does not only depend on the level of accountability stakes, but on teachers' professional regulation.
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- 2022
240. Development of a Digital Village Concept based on Information Technology Infrastructure and Strategy Management to Facilitate SPBE Ogan Ilir Regency
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Serly Oktarina, Muhammad Taufik Roseno, Ubaidillah Ubaidillah, Darius Antoni, Lailatuz Zahro, and Hadi Syaputra
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digital village, spbe, ogan ilir, information technology, infrastructure ,Mathematics ,QA1-939 ,Electronic computers. Computer science ,QA75.5-76.95 - Abstract
Technology in the digital era is currently progressing very rapidly. This is marked by the increasingly massive number of social media users in everyday life. Survey results from the Indonesian Internet Service Providers Association (APJII) in 2022 recorded that the number of internet users in Indonesia reached 196.7 million people. This number increased by 23.5 million or 8.9% compared to 2018. With information technology and the internet, information is now becoming more easily spread and can be accessed by all levels of society thanks to the internet, not just people in urban areas, but people living there. in rural areas too. The Ogan Ilir Regency Government initiated information technology infrastructure including village internet or Digital Village to solve the problem of inequality in digitalization of society in rural and urban areas. Development and implementation of a digital village is a program that implements electronic-based government system (SPBE) services to the community and empowers the community based on the use of technology. This research aims to conduct a survey of information technology infrastructure to identify village potential, marketing and accelerating access and public services. Apart from that, this research also identifies digital-based life patterns of people in rural and urban areas, as well as to advance economic development in rural areas to improve SPBE services in Ogan Ilir Regency. The method used is a quantitative method for surveying and mapping the use of information technology in villages and ultimately producing the concept of an independent digital village. Research data was obtained from surveys and FGDs with the Ogan Ilir district government, village heads, village communities and micro, small and medium enterprises. Meanwhile, secondary data will be obtained through the results of MSME and village profiles from the Central Statistics Agency.
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- 2024
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241. Satellite-based mapping of canopy fuels at the pan-European scale
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Erico Kutchartt, José Ramón González-Olabarria, Antoni Trasobares, Núria Aquilué, Juan Guerra-Hernández, Leónia Nunes, Ana Catarina Sequeira, Brigite Botequim, Marius Hauglin, Palaiologos Palaiologou, Adrian Cardil, Martino Rogai, Vassil Vassilev, Francois Pimont, Olivier Martin-Ducup, and Francesco Pirotti
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Satellite data ,allometric equations ,machine learning ,aboveground biomass ,forest fires ,fire simulations ,Mathematical geography. Cartography ,GA1-1776 ,Geodesy ,QB275-343 - Abstract
Canopy base height (CBH) and canopy bulk density (CBD) are forest canopy fuel parameters that are key for modeling the behavior of crown wildfires. In this work, we map them at a pan-European scale for the year 2020, producing a new dataset consisting of two raster layers containing both variables at an approximate resolution of 100 m. Spatial data from Earth observation missions and derived down-stream products were retrieved and processed using artificial intelligence to first estimate a map of aboveground biomass (AGB). Allometric models were then used to estimate the spatial distribution of CBH using the canopy height values as explanatory variables and CBD using AGB values. Ad-hoc allometric models were defined for this study. Data provided by FIRE-RES project partners and acquired through field inventories was used for validating the final products using an independent dataset of 804 ground-truth sample plots. The CBH and CBD raster maps have, respectively, the following accuracy regarding specific metrics reported from the modeling procedures: (i) coefficient of correlation (R) of 0.445 and 0.330 (p-value < 0.001); (ii) root mean square of error (RMSE) of 3.9 m and 0.099 kg m−3; and (iii) a mean absolute percentage error (MAPE) of 61% and 76%. Regarding CBD, the accuracy metrics improved in closed canopies (canopy cover > 80%) to R = 0.457, RMSE = 0.085, and MAPE = 59%. In short, we believe that the degree of accuracy is reasonable in the resulting maps, producing CBH and CBD datasets at the pan-European scale to support fire mitigation and crown fire simulations.
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- 2024
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242. The divergence theorem for vector-valued forms
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Antoni Pierzchalski
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Applied mathematics. Quantitative methods ,T57-57.97 - Published
- 2024
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243. PTSD Coach as an early mobile intervention to improve cancer-related anxiety and psychosocial oncology uptake in patients newly diagnosed with head and neck cancer: pilot randomized controlled trial
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Laurence Ducharme, Chris Lo, Michael Hier, Anthony Zeitouni, Karen Kost, Alex Mlynarek, Michael Antoni, Eric Kuhn, Jason E. Owen, Daren Heyland, Robert Platt, Fabienne Fuehrmann, Nader Sadeghi, Zeev Rosberger, Saul Frenkiel, Khalil Sultanem, George Shenouda, Fabio Cury, and Melissa Henry
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PTSD ,Mobile application ,E-intervention ,M-health ,PTSD Coach ,Oncology ,Medicine (General) ,R5-920 - Abstract
Abstract Background This pilot study aimed to provide supportive evidence for the feasibility of conducting a full-scale intervention trial with patients newly diagnosed with head and neck cancer (HNC). This included assessing the acceptability and potential usefulness of the PTSD Coach mobile app as an early self-management intervention that gives information about anxiety symptoms, offers self-assessment of symptoms with feedback, tools to self-manage anxiety, and connects to support. Methods A three-arm randomized controlled trial was conducted. The primary pilot study questions related to feasibility were: (1) can we recruit enough (i.e., n = 60 over 8 months or 8/month) and retain a sufficient proportion (i.e., ≥ 85% at three months post-randomization, having completed the primary outcome) of patients with HNC in all trial arms? (2) Will there be at least a 90% completion rate of PTSD Coach within 3 weeks from randomization? (3) Will at least 85% of the content for each module of PTSD Coach be completed? (4) Will there be at least a 90% completion rate of the attention-control tasks (i.e., 45 min/week over 3 weeks)? (5) What would be the anticipated sample size for a full study? (6) We also explored a signal for intervention effects on 1-, 3-, and 6-month levels of cancer-related anxiety, quality of life, anxiety and depression, self-stigma of seeking help, and professional psycho-oncology service uptake. Results Participants comprised 39 patients (11 experimental group (EG), 13 attention-control (AC), 15 usual care (UC)), primarily male (82%). Enrolment was lower than expected, with strategies implemented to increase the study’s participation rate (i.e., shortening the questionnaire, more relevant AC games, pacing study components, and enlarging eligibility to 4 weeks post-diagnosis instead of 2). Retention rates, intervention completion rates, and completion time were adequate. The intervention was acceptable with all patients (100%) who received PTSD Coach reporting it a positive experience and that they would recommend it to others. When compared to UC, there was a signal for the PTSD Coach group to report lower 3-month cancer-related anxiety (PCL-S; eta squared = 0.013), lower anxiety and depression (HADS; eta squared = 0.015), anxiety (HADS-A; eta squared = 0.028), and higher functional wellbeing (FACT-FW; eta squared = 0.09), based on effect sizes calculated across all three groups. The sample size for a full study was estimated to be 118 to 154 per group. Conclusion A repeat pilot study with an expanded oncology population is warranted to further investigate feasibility prior to a full Phase III study. PTSD Coach could be a valuable self-management tool as an initial stepped-care approach intervention in patients newly diagnosed with HNC. Trial registration ClinicalTrials.gov, NCT03651570 . Registered June 26, 2018.
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- 2024
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244. PPARβ/δ upregulates the insulin receptor β subunit in skeletal muscle by reducing lysosomal activity and EphB4 levels
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Jue-Rui Wang, Javier Jurado-Aguilar, Emma Barroso, Ricardo Rodríguez-Calvo, Antoni Camins, Walter Wahli, Xavier Palomer, and Manuel Vázquez-Carrera
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PPARβ/δ ,InsRβ ,EphB4 ,ER stress ,GW5101516 ,Medicine ,Cytology ,QH573-671 - Abstract
Abstract Background The increased degradation of the insulin receptor β subunit (InsRβ) in lysosomes contributes to the development of insulin resistance and type 2 diabetes mellitus. Endoplasmic reticulum (ER) stress contributes to insulin resistance through several mechanisms, including the reduction of InsRβ levels. Here, we examined how peroxisome proliferator-activated receptor (PPAR)β/δ regulates InsRβ levels in mouse skeletal muscle and C2C12 myotubes exposed to the ER stressor tunicamycin. Methods Wild-type (WT) and Ppard −/− mice, WT mice treated with vehicle or the PPARβ/δ agonist GW501516, and C2C12 myotubes treated with the ER stressor tunicamycin or different activators or inhibitors were used. Results Ppard −/− mice displayed reduced InsRβ protein levels in their skeletal muscle compared to wild-type (WT) mice, while the PPARβ/δ agonist GW501516 increased its levels in WT mice. Co-incubation of tunicamycin-exposed C2C12 myotubes with GW501516 partially reversed the decrease in InsRβ protein levels, attenuating both ER stress and the increase in lysosomal activity. In addition, the protein levels of the tyrosine kinase ephrin receptor B4 (EphB4), which binds to the InsRβ and facilitates its endocytosis and degradation in lysosomes, were increased in the skeletal muscle of Ppard −/− mice, with GW501516 reducing its levels in the skeletal muscle of WT mice. Conclusions Overall, these findings reveal that PPARβ/δ activation increases InsRβ levels by alleviating ER stress and lysosomal degradation.
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- 2024
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245. Influence of CFBC Fly Ash Chemical Composition and Mechanical Activation on the Properties of Geopolymer
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A. Antoni, I.J. Yugiarto, R.J.S. Hadi, A. Kuncoro, and D. Hardjito
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fly ash ,cfbc ,mechanical activation ,geopolymer ,chemical composition ,Mining engineering. Metallurgy ,TN1-997 ,Materials of engineering and construction. Mechanics of materials ,TA401-492 - Abstract
Circulating fluidized bed combustion (CFBC) fly ash has the potential as a precursor to making geopolymer concrete because of its rich silica and alumina content. However, there is a problem in utilizing CFBC fly ash caused by its chemical and physical properties that differ from the widely used pulverized coal combustion (PCC) fly ash. CFBC fly ash has a higher water requirement than PCC fly ash due to its angular particle shape, and higher sulfur and lime contained also caused a different reaction in the geopolymer system. Mechanical activation by milling the CFBC fly ash could decrease the water requirement in the mixture and make good quality CFBC fly sh-based geopolymer concrete. Three CFBC fly ash samples from different power plants in Indonesia with different chemical compositions were used in this research. The first had a low lime and no sulfur content, the second had high lime and no sulfur content, and the third had high lime and sulfur content. The milling process using a ball mill for two hours decreased the water requirement, as shown in the lower normal consistency of the fly ash. The reactivity also was increased, shown by the faster initial setting time. Besides its higher reactivity, lower water requirement increased the compressive strength of geopolymer mortar produced. This study also showed that the existence of calcium and sulfur content in the CFBC fly ash could cause unexpected results shown by the change of initial setting time, water requirement, and compressive strength.
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- 2024
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246. Dynamics of affect modulation in neurodevelopmental disorders (DynAMoND) – study design of a prospective cohort study
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Maximilian Bayas, Tobias D. Kockler, Josep Antoni Ramos-Quiroga, Silvia Muñoz Caller, Christian Fadeuilhe, Giovanni de Girolamo, Laura Iozzino, Miriam D’Addazio, Jan Haavik, Anne Halmøy, Karin Schiøler Hellum, Joakim Njaastad Kolle, Berge Osnes, Astri J. Lundervold, Nader Perroud, Roland Hasler, Mélanie Teixeira De Almeida, Ulrich W. Ebner-Priemer, Sharmili Edwin Thanarajah, Carmen Schiweck, Silke Matura, Jonathan Repple, Andreas Reif, and Mareike Aichholzer
- Subjects
Attention-deficit/hyperactivity disorder ,Borderline personality disorder ,Bipolar disorder ,Ambulatory assessment ,Digital phenotyping ,Affective state ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 ,Neurophysiology and neuropsychology ,QP351-495 - Abstract
Abstract Background Attention-deficit/hyperactivity disorder (ADHD) is a common neuro-developmental disorder that often persists into adulthood. Moreover, it is frequently accompanied by bipolar disorder (BD) as well as borderline personality disorder (BPD). It is unclear whether these disorders share underlying pathomechanisms, given that all three are characterized by alterations in affective states, either long or short-term. BD is characterized by infrequent but intense mood shifts, while ADHD and BPD involve more dynamic emotional fluctuations. It is yet to be determined whether these disorders represent distinct phenomena or different points on a spectrum of affective dysregulation. Methods This study seeks to distinguish the emotional dysregulation of BPD, ADHD, and BD by using digital phenotyping, a measurement burst electronic-diary method with different sampling rates, and accelerometry to measure participants’ activity. Our study will include 480 participants aged 14 to 50 (120 each from BPD, ADHD, BD, and healthy control groups) from five European sites. Participants’ smartphones will provide continuous data on their digital phenotypes, i.e., by indicators of physical activity and communication, for one year, along with daily evening ratings of mood and sleep. Moreover, five intensive measurement periods of five days each, called measurement bursts, will occur throughout the year, with electronic diaries asking participants to report on mood, self-esteem, impulsivity, life events, social interactions, and dysfunctional behaviors ten times a day. Moreover, participants will wear activity sensors during the five measurement bursts. Statistical analysis aims to identify whether affective dysregulation aspects share or differ across disorders. Specifically, data analysis aims to investigate the differences in parameters of affect fluctuation such as attractor strength and variability between disorders and to test the association of genetic risk factors for psychiatric disorders and resilience factors with critical parameters of affect modulation. Discussion The results of this study offer the potential to link patients’ external exposures with their affective state, reduce misdiagnosis, and determine the best timing for therapeutic interventions. Potential limitations of the study include insufficient recruitment of patients and drop-outs due to various protocol violations. Trial registration Study code: DRKS00028917, registered 27.07.2022, https://drks.de/search/de/trial/DRKS00028917 .
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- 2024
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247. Nosocomial transmission of NDM-1-containing Klebsiella pneumoniae ST147 in a Dutch pediatric oncology center associated with patients from Ukraine
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Wouter L. Smit, Herman F. Wunderink, Jan A. J. W. Kluytmans, Wim J. E. Tissing, E. H. Pieter van Dijkhuizen, Yvette G. T. Loeffen, Antoni P. A. Hendrickx, and Dutch CPE Surveillance Study Group
- Subjects
Nosocomial transmission ,NDM-1-containing Klebsiella pneumoniae ,Environmental contamination ,Medical evacuees ,Infectious and parasitic diseases ,RC109-216 - Abstract
Abstract We studied nosocomial transmission of multidrug-resistant bla NDM-1-containing Klebsiella pneumoniae ST147 in a Dutch pediatric oncology center. Whole-genome multilocus sequence typing revealed two genetic clusters consisting of 2 and 5 K. pneumoniae isolates, both from Ukrainian medical evacuees and Dutch patients. Ukrainian patients were colonized at admission, and two Dutch patients developed bacteremia. Temporal and spatial transmission links were assessed and sampling of sinks revealed environmental contamination of bla NDM-1-containing K. pneumoniae with genetic relatedness to cluster isolates. Phylogenetic analysis of 163 K. pneumoniae ST147 isolates from the Dutch national surveillance revealed that transmission-related isolates formed a unique phylogenetic branch. In conclusion, we demonstrate nosocomial transmission of unique bla NDM-1-containing K. pneumoniae ST147 strains introduced by Ukrainian patients. Sink drains colonized by genetically similar bla NDM-1-containing strains in rooms designated as spatial links within the cluster were considered the potential source of transmission. Healthcare professionals should be aware of these risks, particularly in settings with susceptible patients exposed to antibiotic pressure.
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- 2024
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248. Acyl-CoA: lysophosphatidylcholine acyltransferase from diatom P. Tricornutum efficiently remodels phosphatidylcholine containing polyunsaturated fatty acids
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Katarzyna Jasieniecka-Gazarkiewicz, Ada Połońska, Yangmin Gong, and Antoni Banaś
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LPCAT ,VLC-PUFA ,Diatoms ,Phaeodactylum tricornutum, phospholipids ,Medicine ,Science - Abstract
Abstract This study presents characterisation of diatom’s PtLPCAT1 (acyl-CoA: lysophosphatidylcholine acyltransferase) activity in phospholipid remodelling. In this research microsomal fractions of yeast Δale1 mutant overexpressing PtLPCAT1 were used as a source of the tested enzyme. In the assays evaluating remodelling of different phospholipids by PtLPCAT1 not modified microsomal fractions of the tested yeast were used. The enzyme most intensively remodelled fatty acid composition of microsomal phosphatidylcholine (PC), however, it was also able to remodel phosphatidylethanolamine (PE) and phosphatidic acid (PA). To study the ability of the tested enzyme to remodel PC molecules containing fatty acids from the VLC-PUFA biosynthetic pathway the tested microsomes were enriched biochemically with: sn-1-18:1-sn-2-18:3(n-3)-PC, sn-1-18:1-sn-2-18:3(n-6)-PC, sn-1-18:1-sn-2-18:4(n-3)-PC, sn-1-18:1-sn-2-20:4(n-3)-PC and sn-1-18:1-sn-2-20:5(n-3)-PC. Further on it was shown that PtLPCAT1 was able to remodel PC of such modified microsomes with higher intensity than PC of unmodified microsomes. The remodelling efficiency of PtLPCAT1 was affected also by fatty acid donors; the process was most efficient when acyl-CoAs with unsaturated fatty acids were in the assays. In comparative studies the properties of Arabidopsis AtLPCAT1 and yeast ALE1 were tested. Effect of the temperature and pH values on the remodelling activity of PtLPCAT1 was also examined.
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- 2024
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249. L’autogovern de Catalunya: balanç i perspectives
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Antoni Bayona Rocamora
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autogovern ,constitució ,estatut ,independència ,Political institutions and public administration (General) ,JF20-2112 ,Social Sciences - Abstract
La recuperació de l’autogovern de Catalunya va ser possible amb l’aprovació de la Constitució de 1978 i del primer Estatut de 1979. Sobre aquestes bases jurídiques, les institucions catalanes han pogut exercir un poder polític important, però limitat, tenint en compte el potencial que permetia desenvolupar el marc jurídic. La insatisfacció sobre el contingut de l’autogovern i sobre el reconeixement de Catalunya com a entitat nacional diferenciada dins l’Estat ha portat en aquests darrers anys a diverses iniciatives per superar les limitacions existents, singularment la reforma de l’Estatut i l’opció per la independència. Aquests intents no han assolit els resultats previstos, la qual cosa comporta la necessitat que les institucions i les forces polítiques afrontin el futur de l’autogovern des de noves perspectives.
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- 2024
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250. El finançament de la Generalitat de Catalunya en la perspectiva de (gairebé) mig segle
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Antoni Castells Oliveres
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autogovern ,federalisme ,generalitat ,finançament ,hisenda ,Political institutions and public administration (General) ,JF20-2112 ,Social Sciences - Abstract
La hisenda és una de les peces clau de l’autogovern. És a dir, la determinació de quins són els recursos de què disposa el govern territorial i de quin és l’abast de les responsabilitats normatives i administratives sobre aquests recursos. El finançament de la Generalitat de Catalunya ha estat objecte de successives reformes des de les primeres eleccions autonòmiques l’any 1980, culminant amb la reforma de 2009. En el fons del debat sobre el finançament hi ha subjacent el debat sobre el model d’Estat i, concretament, sobre dues qüestions fonamentals. Per una banda, la pulsió entre la visió pròpia d’un Estat unitari, on el poder polític està concentrat en el govern central, i la visió pròpia d’un Estat federal, on el poder polític està repartit (i, en alguns punts, és compartit) entre el govern central i els governs territorials d’àmbit intermedi. I, per una altra banda, les tensions derivades d’una realitat que manifesta de forma palesa l’asimetria existent entre els diferents territoris quant a voluntat d’autogovern i grau d’autoconsciència nacional. Aquestes dues qüestions incideixen de manera determinant en el model d’hisenda i en l’orientació de les possibles reformes, que haurien de tenir un sentit o un altre segons quin sigui el model d’estat que es persegueixi.
- Published
- 2024
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