bluuebunny/crossref_metadata_2025 huggingface dataset:
Performance Assessment of Mobile Laser Scanning Systems Using Velodyne Hdl-32e
Authors: Alsadik Bashar
Published: March 2024

Mapping systems using multi-beam LiDARs are widely used nowadays for different geospatial applications graduating from indoor projects to outdoor city-wide projects. These mobile mapping systems can be either ground-based or aerial-based systems and are mostly equipped with inertial navigation systems INS. The Velodyne HDL-32 LiDAR is a well-known 360° spinning multi-beam laser scanner that is widely used in outdoor and indoor mobile mapping systems. The performance of such LiDARs is an ongoing research topic which is quite important for the quality assurance and quality control topic. The performance of this LiDAR type is correlated to many factors either related to the device itself or the design of the mobile mapping system. Regarding design, most of the mapping systems are equipped with a single Velodyne HDL32 in a specific orientation angle which is different among the mapping systems manufacturers. The LiDAR orientation angle has a significant impact on the performance in terms of the density and coverage of the produced point clouds. Furthermore, during the lifetime of this multi-beam LiDAR, one or more beams may be defected and then either continue the production or returned to the manufacturer to be fixed which then cost time and money. In this paper, the design impact analysis of a mobile laser scanning (MLS) system equipped with a single Velodyne HDL-32E will be clarified and a clear relationship is given between the orientation angle of the LiDAR and the output density of points. The ideal angular orientation of a single Velodyne HDL-32E is found to be at 35° in a mobile mapping system. Furthermore, we investigated the degradation of points density when one of the 32 beams is defected and quantified the density loss percentage and to the best of our knowledge, this is not presented in literature before. It is found that a maximum of about 8% point density loss occurs on the ground and 4% on the facades when having a defected beam of the Velodyne HDL-32E.
A Vingança de Prometeu: ciência, tecnologia, inovação e a reconfiguração do poder internacional no século XXI
Authors: Fernandes Luis , Garcia Ana Saggioro , Carvalho Samuel Rufino de , Viegas Lucia Helena Tavares
Published: March 2024

Este artigo examina a reconfiguração do poder internacional desde o fim da Guerra Fria, incorporando dimensões cruciais de ciência, tecnologia e inovação (CT&I). Acompanhamos a evolução das posições relativas ocupadas por Estados Unidos, União Europeia (UE), China, Japão, Índia, Rússia, Brasil e Coreia do Sul na economia global entre 1990 e 2020 em três dimensões: dinamismo produtivo – medido por participação relativa no produto interno bruto (PIB) mundial calculado por paridade de poder de compra (PPC); dinamismo científico e tecnológico – medido por participação relativa na autoria de artigos publicados em revistas internacionais indexadas; e dinamismo de inovação – medido por participação relativa no registro de patentes no mundo. Para medir e avaliar as mudanças estruturais em curso, adaptamos os índices de Rae e Taylor e de Laakso e Taagepera, comumente usados para aferir graus de fragmentação em sistemas políticos, elaborar índices de concentração/dispersão de poder relativo em cada dimensão e indicar o número e a composição de “potências relativas” no seu âmbito. Os resultados evidenciam a erosão do poder relativo das “potências tradicionais” (Estados Unidos, Europa e Japão), a ascensão acelerada da China e a emergência de novas “potências relevantes” (com destaque para a Índia e a Coreia do Sul), mas com graus diferenciados de difusão/concentração conforme a dimensão considerada. Reforçam a compreensão de que capacidades nacionais em CT&I se tornaram um vetor central da reconfiguração do poder mundial.
Fostering bottom-up collaborative connections in science, technology and innovation: the case of Brazil-Australia cooperation
Authors: Sant’Anna Nanahira de Rabelo e , Elsner Cristina
Published: March 2024

The purpose of this paper is to analyze the development of the cooperation between Brazil and Australia in science, technology and innovation (ST&I), as a unique collaboration resulting from a bottom-up strategy. Different from the cooperation approaches with other countries, with whom historical and cultural relations exist, it was built upon people-to-people linkages. Substantial partnerships between universities were fundamental to those linkages, fostering exchange programs and collaborative projects. They contributed to consolidate a critical mass among researchers, a condition expected by both countries’ governments to move forward signing an international high-level political agreement, which is currently implementing its first Joint Committee. The paper describes both countries’ institutional architecture, policy documents, agreements and exchange data, providing inputs for an exploratory analysis of their agenda and policy objectives for ST&I cooperation. It also demonstrates how people-to-people linkages can be fruitful when established in areas of common interest, such as water resources management, agriculture and tropical diseases, leading to an inevitable thickening of the ST&I cooperation. This analysis confirms the success of a bottom-up approach to ST&I cooperation in the pursuit of joint solutions for common challenges. When political will meets a strong scientific knitting and bilateral technical awareness, forthcoming results are expected to enhance strategic projects in areas of emerging importance. The expectation is to help policy makers comprehend the value of already existing partnerships, therefore stimulating innovative projects under the Brazil-Australia ST&I Agreement.
Enhanced HAR using Dynamic STGAT
Authors: Narote Pragati , . Shrayanshi , S Chauhan Priyanka , Charan Teja Vaddempudi , Karthik Ponnaganti
Published: March 2024

Action recognition has seen significant advancements with the integration of spatio-temporal representations, particularly leveraging skeleton-based models and cross-modal data fusion techniques. However, existing approaches face challenges in capturing long- range dependencies within the human body skeleton and effectively balancing features from diverse modalities. To address these limitations, a novel framework, the Dynamic Spatio-Temporal Graph Attention Transformer (D-STGAT), is proposed, which seamlessly integrates the strengths of dynamic graph attention mechanisms and transformer architectures for enhanced action recognition. The framework builds upon recent innovations in graph attention networks (GAT) and transformer models. First, the Spatial-Temporal Dynamic Graph Attention Network (ST-DGAT) is introduced, extending traditional GAT by incorporating a dynamic attention mechanism to capture spatial- temporal patterns within skeleton sequences. By reordering the weighted vector operations in GAT, the approach achieves a global approximate attention function, significantly enhancing its expressivity and capturing long-distance dependencies more effectively than static attention mechanisms. Furthermore, to address the challenges of cross-modal feature representation and fusion, the spatio-temporal Cross Attention Transformer (ST-CAT) is introduced. This model efficiently integrates spatio-temporal information from both video frames and skeleton sequences by employing a combination of full spatio-temporal attention (FAttn), zigzag spatio-temporal attention (ZAttn), and binary spatio-temporal attention (BAttn) modules. Through the proper arrangement of these modules within the transformer encoder and decoder, ST-CAT learns a multi-feature representation that effectively captures the intricate spatiotemporal dynamics inherent in action recognition tasks. Experimental results on the Penn- Action, NTU-RGB+D 60, and 120 datasets showcase the efficacy of the approach, yielding promising performance improvements over previous state-of-the-art methods. In summary, the proposed D-STGAT and ST-CAT frameworks offer novel solutions for action recognition tasks by leveraging dynamic graph attention mechanisms and transformer architectures to effectively capture and fuse spatiotemporal features from diverse modalities, leading to superior performance compared to existing approaches.
The 23rd WA Lee Equity Lecture
Authors: M Derrington The Hon Justice Roger
Published: March 2024

The underlying rationale for tracing in equity is a much-debated topic and has seemingly resulted in more theories than there are commentators. For a relatively minor area of the law, it has attracted substantially more than its fair share of attention from academic theorists, each of whom vie to include it as part of their particular speciality. They include the restitutionalists; those who regard tracing as an inherent right of property; those who regard it as underpinned by the Roman Law notion of obligatio;1 and those who regard it as the enforcement of fiduciary duties. The intense debate necessarily reflects a lack of jurisprudential consistency in the authorities and there are myriad doctrinally diverse cases from which academics can choose to support their respective theories.
The Influence of Green Marketing on Repurchase Intention and Customer Loylaty Through Customer Satisfaction as a Mediation Variable
Authors: SAFITRI Retno Vivi , NGATNO Ngatno , FARIDA Naili
Published: March 2024

This research aims to determine the direct influence of green marketing on repurchase intention and customer loyalty and how much customer satisfaction is a mediating variable between Green Marketing on Repurchase Intention and Customer Loyalty on Uniqlo products. The research method used uses a quantitative approach with the explanatory research type. The sample used was 270 respondents, and data collection was done using a questionnaire. The dependent variable in this research is Green Marketing (X). In contrast, the independent variables are Repurchase Intention and Customer Loyalty (Y), while the Customer Satisfaction variable is a Mediation variable (Z). Data analysis used in this research uses the Smart Partial Least Square (PLS) method. The study's hypothesis testing yielded significant findings. Firstly, green marketing positively impacts customer satisfaction, loyalty, and repurchase intention for Uniqlo products, supported by prior research. Secondly, customer satisfaction and loyalty are interlinked, as validated by existing literature. Thirdly, the influence of green marketing through customer satisfaction and repurchase intention significantly affects customer loyalty. These findings emphasize the importance of green marketing strategies in enhancing customer relationships and brand loyalty for Uniqlo products.
The Influence of Corporate Social Responsibility and Environmental Management Accounting on the Sustainability Performance of the Patra Bali Resort and Villas
Authors: ARIENATA Ketut Yoga Widiyasa , SAPUTRA Komang Adi Kurniawan , MANUABA I. B. Made Putra
Published: March 2024

This research aims to examine and analyze the impact of Corporate Social Responsibility and Environmental Management Accounting on Sustainability Performance. Conducted by The Patra Bali Resort & Villas, the study includes 79 respondents selected through saturation sampling. All data obtained from the questionnaire distribution are deemed suitable and further analyzed using multiple linear regression, hypothesis testing (t-test and F-test). The results indicate that (1) Corporate Social Responsibility significantly and positively influences Sustainability Performance at The Patra Bali Resort & Villas. This suggests that an increase in Corporate Social Responsibility leads to an improvement in Sustainability Performance at The Patra Bali Resort & Villas. (2) Environmental Management Accounting significantly and positively affects Sustainability Performance at The Patra Bali Resort & Villas. This implies that better or increased Environmental Management Accounting results in an improved Sustainability Performance at The Patra Bali Resort & Villas.
Super-Earth LHS3844b is Tidally Locked
Authors: Lyu Xintong , Koll Daniel D. B. , Cowan Nicolas B. , Hu Renyu , Kreidberg Laura , Rose Brian E. J.
Published: March 2024

Short-period exoplanets on circular orbits are thought to be tidally locked into synchronous rotation. If tidally locked, these planets must possess permanent day- and night-sides, with extreme irradiation on the dayside and none on the nightside. However, so far the tidal locking hypothesis for exoplanets is supported by little to no empirical evidence. Previous work showed that the super-Earth LHS 3844b likely has no atmosphere, which makes it ideal for constraining the planet’s rotation. Here we revisit the Spitzer phase curve of LHS 3844b with a thermal model of an atmosphere-less planet and analyze the impact of nonsynchronous rotation, eccentricity, tidal dissipation, and surface composition. Based on the lack of observed strong tidal heating we rule out rapid nonsynchronous rotation (including a Mercury-like 3:2 spin–orbit resonance) and constrain the planet's eccentricity to less than ∼0.001 (more circular than Io's orbit). In addition, LHS 3844b’s phase curve implies that the planet either still experiences weak tidal heating via a small-but-nonzero eccentricity (requiring an undetected orbital companion), or that its surface has been darkened by space weathering; of these two scenarios we consider space weathering more likely. Our results thus support the hypothesis that short-period rocky exoplanets are tidally locked, and further show that space weathering can significantly modify the surfaces of atmosphere-less exoplanets.
Modelling Time-dependent Convective Penetration in 1D Stellar Evolution
Authors: Johnston Cole , Michielsen Mathias , Anders Evan H. , Renzo Mathieu , Cantiello Matteo , Marchant P. , Goldberg Jared A. , Townsend Richard H. D. , Sabhahit Gautham , Jermyn Adam S.
Published: March 2024

One-dimensional stellar evolution calculations produce uncertain predictions for quantities like the age, core mass, core compactness, and nucleosynthetic yields; a key source of uncertainty is the modeling of interfaces between regions that are convectively stable and those that are not. Theoretical and numerical work has demonstrated that there should be numerous processes adjacent to the convective boundary that induce chemical and angular momentum transport, as well as modify the thermal structure of the star. One such process is called convective penetration, wherein vigorous convection extends beyond the nominal convective boundary and alters both the composition and thermal structure. In this work, we incorporate the process of convective penetration in stellar evolution calculations using the stellar evolution software instrument mesa. We implement convective penetration according to the description presented by Anders et al. to to calculate a grid of models from the pre-main sequence to helium core depletion. The extent of the convective penetration zone is self-consistently calculated at each time step without introducing new free parameters. We find both a substantial penetration zone in all models with a convective core and observable differences to global stellar properties such as the luminosity and radius. We present how the predicted radial extent of the penetration zone scales with the total stellar mass, age, and metallicity of the star. We discuss our results in the context of existing numerical and observational studies.
Black Hole Activity Imprints on the Internal Plateau and the Subsequent Sharp Decay
Authors: Zheng Tian-Ci , Wei Da-Ming , Wang Yun , Zhou Hao , Li Long
Published: March 2024

A stellar-mass black hole (BH) or a millisecond magnetar is believed to be born as the central engine of gamma-ray bursts (GRBs). The presence of plateaus in the X-ray extended emission or afterglow of GRBs is widely accepted as an indicator of a magnetar central engine, particularly those with a sharp decay (faster than t
−3), the so-called internal plateau. However, an alternative model, by taking the evolution of the magnetic flux at the BH horizon into account, suggests that an internal plateau can also arise from a jet powered by the Blandford–Znajek (BZ) mechanism (hereafter, a BZ jet). In this study, we propose that a precessional BZ jet would manifest a quasiperiodic oscillation (QPO) signature on the internal plateau and the subsequent sharp decay. Such lightcurves cannot be readily explained by the activity of a short-lived, supermassive magnetar, thus favoring a Kerr BH as the central engine. The X-ray afterglow of GRB 050904, comprising nine flares, is characterized by a QPO-modulated plateau and sharp decay, which can be well reproduced by a precessional BZ jet model. Therefore, one potential clue for distinguishing between these two engines lies in whether the QPO signature is present throughout the entire plateau and the subsequent sharp decay, as the magnetar scenario suggests a collapse at the end of the plateau.
MIRI MRS Observations of β Pictoris. I. The Inner Dust, the Planet, and the Gas
Authors: Worthen Kadin , Chen Christine H. , Law David R. , Lu Cicero X. , Hoch Kielan , Chai Yiwei , Sloan G. C. , Sargent B. A. , Kammerer Jens , Hines Dean C. , Rebollido Isabel , Balmer William , Perrin Marshall D. , Watson Dan M. , Pueyo Laurent , Girard Julien H. , Lisse Carey M. , Stark Christopher C.
Published: March 2024

We present JWST MIRI Medium Resolution Spectrograph (MRS) observations of the β Pictoris system. We detect an infrared excess from the central unresolved point source from 5 to 7.5 μm which is indicative of dust within the inner ∼7 au of the system. We perform point-spread function (PSF) subtraction on the MRS data cubes and detect a spatially resolved dust population emitting at 5 μm. This spatially resolved hot dust population is best explained if the dust grains are in the small grain limit (2πa ≪ λ). The combination of unresolved and resolved dust at 5 μm could suggest that dust grains are being produced in the inner few astronomical units of the system and are then radiatively driven outwards, where the particles could accrete onto the known planets in the system, β Pictoris b and c. We also report the detection of an emission line at 6.986 μm that we attribute to [Ar ii]. We find that the [Ar ii] emission is spatially resolved with JWST and appears to be aligned with the dust disk. Through PSF-subtraction techniques, we detect β Pictoris b at the 5σ level in our MRS data cubes and present the first mid-infrared spectrum of the planet from 5 to 7 μm. The planet’s spectrum is consistent with having absorption from water vapor between 5 and 6.5 μm. We perform atmosphere model grid fitting of the spectra and photometry of β Pictoris b and find that the planet’s atmosphere likely has a substellar C/O ratio.
Intensive Swift and LCO Monitoring of PG 1302–102: Active Galactic Nucleus Disk Reverberation Mapping of a Supermassive Black Hole Binary Candidate
Authors: Liu Tingting , Edelson Rick , Hernández Santisteban Juan V. , Kara Erin , Montano John , Gelbord Jonathan , Horne Keith , Barth Aaron J. , Cackett Edward M. , Kaplan David L.
Published: March 2024

We present an intensive multiwavelength monitoring campaign of the quasar PG 1302−102 with Swift and the Las Cumbres Observatory network telescopes. At z ∼ 0.3, it tests the limits of the reverberation mapping (RM) technique in probing the accretion disk around a supermassive black hole (SMBH) and extends the parameter space to high masses and high accretion rates. This is also the first time the RM technique has been applied to test disk structures predicted in the SMBH binary model that has been suggested for this source. PG 1302−102 was observed at a ∼daily cadence for ∼9 months in 14 bands spanning from X-ray to UV and optical wavelengths, and it shows moderate to significant levels of variability correlated between wavelengths. We measure the interband time lags, which are consistent with a τ ∝ λ
4/3 relation as expected from standard disk reprocessing, albeit with large uncertainties. The disk size implied by the lag spectrum is consistent with the expected disk size for its black hole mass within uncertainties. While the source resembles other reverberation-mapped active galactic nuclei in many respects, and we do not find evidence supporting the prevalent hypothesis that it hosts an SMBH binary, we demonstrate the feasibility of studying SMBH binaries from this novel angle and suggest possibilities for the LSST Deep Drilling Fields.
An Estimate of the Binary Star Fraction among Young Stars at the Galactic Center: Possible Evidence of a Radial Dependence
Authors: Gautam Abhimat K. , Do Tuan , Ghez Andrea M. , Chu Devin S. , Hosek Matthew W. , Sakai Shoko , Naoz Smadar , Morris Mark R. , Ciurlo Anna , Haggard Zoë , Lu Jessica R.
Published: March 2024

We present the first estimate of the intrinsic binary fraction of young stars across the central ≈0.4 pc surrounding the supermassive black hole (SMBH) at the Milky Way Galactic center (GC). This experiment searched for photometric variability in 102 spectroscopically confirmed young stars, using 119 nights of 10″ wide adaptive optics imaging observations taken at W. M. Keck Observatory over 16 yr in the

K
′

-[2.1 μm] and H-[1.6 μm] bands. We photometrically detected three binary stars, all of which are situated more than 1″ (0.04 pc) from the SMBH and one of which, S2-36, is newly reported here with spectroscopic confirmation. All are contact binaries or have photometric variability originating from stellar irradiation. To convert the observed binary fraction into an estimate of the underlying binary fraction, we determined the experimental sensitivity through detailed light-curve simulations, incorporating photometric effects of eclipses, irradiation, and tidal distortion in binaries. The simulations assumed a population of young binaries, with stellar ages (4 Myr) and masses matched to the most probable values measured for the GC young star population, and underlying binary system parameters (periods, mass ratios, and eccentricities) similar to those of local massive stars. As might be expected, our experimental sensitivity decreases for eclipses narrower in phase. The detections and simulations imply that the young, massive stars in the GC have a stellar binary fraction ≥71% (68% confidence), or ≥42% (95% confidence). This inferred GC young star binary fraction is consistent with that typically seen in young stellar populations in the solar neighborhood. Furthermore, our measured binary fraction is significantly higher than that recently reported by Chu et al. based on radial velocity measurements for stars ≲1″ of the SMBH. Constrained with these two studies, the probability that the same underlying young star binary fraction extends across the entire region is <1.4%. This tension provides support for a radial dependence of the binary star fraction, and therefore, for the dynamical predictions of binary merger and evaporation events close to the SMBH.
Investigating Performance Trends of Simulated Real-time Solar Flare Predictions: The Impacts of Training Windows, Data Volumes, and the Solar Cycle
Authors: Goodwin Griffin T. , Sadykov Viacheslav M. , Martens Petrus C.
Published: March 2024

This study explores the behavior of machine-learning-based flare forecasting models deployed in a simulated operational environment. Using Georgia State University’s Space Weather Analytics for Solar Flares benchmark data set, we examine the impacts of training methodology and the solar cycle on decision tree, support vector machine, and multilayer perceptron performance. We implement our classifiers using three temporal training windows: stationary, rolling, and expanding. The stationary window trains models using a single set of data available before the first forecasting instance, which remains constant throughout the solar cycle. The rolling window trains models using data from a constant time interval before the forecasting instance, which moves with the solar cycle. Finally, the expanding window trains models using all available data before the forecasting instance. For each window, a number of input features (1, 5, 10, 25, 50, and 120) and temporal sizes (5, 8, 11, 14, 17, and 20 months) were tested. To our surprise, we found that, for a window of 20 months, skill scores were comparable regardless of the window type, feature count, and classifier selected. Furthermore, reducing the size of this window only marginally decreased stationary and rolling window performance. This implies that, given enough data, a stationary window can be chosen over other window types, eliminating the need for model retraining. Finally, a moderately strong positive correlation was found to exist between a model’s false-positive rate and the solar X-ray background flux. This suggests that the solar cycle phase has a considerable influence on forecasting.
On the Transition Stage of Pulsar Pulsed Radio Emission and Its Potential Association with Radio Pulsar Nulling
Authors: Du Shuang
Published: March 2024

While the precise mechanism of generating pulsed coherent radio emission from pulsars remains elusive, certain gap-invoking models (especially, the inner gap model) offer a comprehensive and plausible explanation for the genesis and termination of such emissions. However, the transition stage between the period of persistent radio emission and the period of radio-quiet emission remains poorly understood, despite observations indicating that a radio pulsar in the pulse-nulling state is undergoing the transition stage. In this study, we present a qualitative explanation for the elusive transition stage by modeling pulsar magnetospheres analytically as equivalent resistive–capacitive circuits based on the inner gap model. Our result indicates that, due to lengthy spin-down, older radio pulsars will gradually shift from the state of persistent radio emission to a certain type of pulse-nulling state by delayed sparks within their inner gaps.
Standardised inventories of spiders (Arachnida, Araneae) of Macaronesia III: dry habitats of Cabo Verde Archipelago (São Vicente and Santo Antão)
Authors: Crespo Luís Carlos , Cardoso Pedro , Malumbres-Olarte Jagoba , Pereira Fernando , Romeiras Maria , Ros-Prieto Alejandra , Rigal François , Borges Paulo
Published: March 2024

With this publication, we contribute to the knowledge of the arachnofauna of Cabo Verde, focusing specifically on the Islands of Santo Antão and São Vicente. Data were obtained from samples collected as part of the project "Macaronesian Islands as a testing ground to assess biodiversity drivers at multiple scales" (FCT - MACDIV, 2015-2018). This project aimed to identify the factors influencing community assembly in Macaronesian islands. For the Cabo Verde Islands, we focused on dry habitats with the additional aim to revise the aracnofauna of this poorly-known fauna. We applied the COBRA (Conservation Oriented Biodiversity Rapid Assessment) sampling protocol in ten 50 m x 50 m dry shrub plots, with five on each of the two islands, using pitfall traps, sweep-netting and active search. Additional ad-hoc samples were also collected and reported.

Our sampling of spiders from Cabo Verde (Santo Antão and São Vicente) yielded a total of 3,368 specimens, of which 1300 (39%) were adults. The samples include 21 families, 87 species, 18 of which are morphospecies awaiting formal identification or description at species level. Species in the families Oxyopidae (2 spp.) and Araneidae (8 spp.) were the most abundant, making up 49% of the specimens. From the 68 named species, 14 are endemic to Cabo Verde, 40 are native non-endemic and 14 are introduced. The colonisation status of Cithaeron reimoseri Platnick, 1991 is unknown. Endemic species accounted for 24% (n = 818) of the specimens and native non-endemic for 63% (n = 2122). A total of 29 species were new records for Cabo Verde, with 15 for Santo Antão, seven for São Vicente and seven for both Islands.
Collaborer avec des jeunes et des familles noires aux États-Unis et au Brésil. Patrimoine Africana et partenariat communautaire pour la justice éducative
Authors: Speight Vaughn Melissa , King Joyce E. , Amado Cardoso Ivanilda
Published: March 2024

Dans cet article, trois éducatrices noires insurgées utilisent les méthodes de recherche des Black Studies pour interroger leur collaboration avec des jeunes et des familles noires aux États-Unis et au Brésil dans le cadre des Gardiens du patrimoine, une intervention éducative afrocentrique axée sur le leadership civique des jeunes, la collecte de données intergénérationnelles, et la résolution collective de problèmes sociaux. L’article documente comment ce programme, en utilisant les connaissances du patrimoine communautaire, les expressions culturelles, les traditions de résistance et l’apprentissage à distance, renforce le pouvoir de transformation, l’activisme et l’action des jeunes, en fournissant aux participants les connaissances et les compétences nécessaires pour travailler ensemble pour la justice éducative, pour surmonter l’éducation erronée, le racisme structurel et l’iniquité. Des concepts et des mots linguistiques africains sont utilisés pour transmettre l’unité culturelle des peuples panafricains et faciliter l’identification positive des participants à une conscience africaine partagée.
Familles victimes de la violence dans des contextes militarisés à Rio de Janeiro. Genre, race et territoire dans une perspective anticoloniale
Authors: Farias Juliana
Published: March 2024

Dans cet article, je partage les leçons tirées de mes expériences de recherche avec les membres des familles de victimes de la violence d’État dans les favelas de Rio de Janeiro et les organisations féministes et antiracistes régionales, en développant une réflexion basée sur deux lignes d’argumentation complémentaires : 1) le refus de quantifier les violations et 2) le refus de hiérarchiser la violence. Les technologies gouvernementales qui laissent des traces spécifiques en fonction de la race, du genre et du territoire sont analysées. Le cadre « théorico-analytique » du débat est construit à partir du champ des études sur le genre, la sexualité et la violence, à travers lequel il est possible de comprendre les processus de féminisation du territoire des favelas et la territorialisation de la violence genrée et raciale dans des contextes militarisés.
Les préjugés raciaux dans les familles et l’école aux Antilles des années 1950 aux années 1970
Authors: Sitcharn Karine
Published: March 2024

Le thème des préjugés raciaux est peu traité en science de l’éducation et dans l’histoire de l’éducation en France (Dubet, 1993), tel n’est pas le cas dans la recherche antillaise. Celle-ci souligne le fait que de l’abolition de l’esclavage à 1946 aux Antilles, l’école au service de la domination des élites n’éradique pas les discriminations raciales, mais contribue à les renforcer. Cet article entend poursuivre la réflexion sur l’étude des préjugés raciaux dans l’école et les familles en se focalisant sur la période des années 1950-1970. Il repose sur l’analyse de quatre enquêtes dans les familles antillaises, mais également sur des tests sociométriques et une observation participante dans deux collèges en Martinique. Il montre les effets de la longue durée sur la construction des préjugés raciaux, il met en évidence les rapports de pouvoir qui les sous-tendent, et donne à voir une perpétuation des stéréotypes raciaux dans la sphère familiale et scolaire dans la période 1950-1970.
Effects of extreme rainfall on phreatic eruptions: A case study of Mt. Ontake in Japan
Authors: Uchida Nobuo
Published: March 2024

Sometimes, natural disasters caused by volcanic eruptions have tragic consequences. Phreatic eruptions are large explosions of steam rocks and hot water caused by the sudden evaporation of water to steam. The September 2014 eruption of Mt. Ontake in Japan was the deadliest in recorded history. Numerous studies have analyzed the occurrence of phreatic eruptions of Mt. Ontake. However, at present, although it is explained that the magma did not move, studies on the cause of the eruption and the elucidation of the process are limited. This study investigates the role of external water of meteoric origin and determines its role in the eruption process. According to a survey of rainfall records by the Japan Meteorological Agency, heavy rain that broke historical records occurred immediately before the phreatic eruption of Mt. Ontake. It was hypothesized that extreme rainfall was the source of the external water supply that caused the phreatic eruption without the magma moving. Various studies on eruptions have confirmed the consistency of this hypothesis. Regarding the eruptive process, extreme rainfall collided with the hot rocks outside the magma chamber, triggering frequent occurrences of vaporization associated with boiling, leading to large explosions in sealed rocks above the zone of water infiltration. This research can contribute to disaster prevention in the future. In order to achieve this, it is necessary to install rainfall measuring instruments on all volcanoes and perform a comparative, multidisciplinary approach to all the monitored parameters.
Abelian and Tauberian results for the fractional Fourier cosine (sine) transform
Authors: Maksimović Snježana , Atanasova Sanja , Mitrović Zoran D. , Haque Salma , Mlaiki Nabil
Published: March 2024

In this paper, we presented Tauberian type results that intricately link the quasi-asymptotic behavior of both even and odd distributions to the corresponding asymptotic properties of their fractional Fourier cosine and sine transforms. We also obtained a structural theorem of Abelian type for the quasi-asymptotic boundedness of even (resp. odd) distributions with respect to their fractional Fourier cosine transform (FrFCT) (resp. fractional Fourier sine transform (FrFST)). In both cases, we quantified the scaling asymptotic properties of distributions by asymptotic comparisons with Karamata regularly varying functions.
Fixed point results for generalized almost contractions and application to a nonlinear matrix equation
Authors: Prasad Koti N. V. V. V. , Mishra Vinay , Mitrović Zoran D. , Aloqaily Ahmad , Mlaiki Nabil
Published: March 2024

The goal of this paper was to improve some known results of fixed points by using $ w $-distances and properties of locally symmetric $ \mathcal{H} $-transitivity of binary relations. Also, we gave the application of the obtained results for finding the solution of nonlinear matrix equations. Finally, we gave a numerical example to demonstrate the applicability of our results.
On graded weakly $ J_{gr} $-semiprime submodules
Authors: Alnimer Malak , Al-Zoubi Khaldoun , Al-Dolat Mohammed
Published: March 2024

Let $ \Gamma $ be a group, $ \mathcal{A} $ be a $ \Gamma $-graded commutative ring with unity $ 1, $ and $ \mathcal{D} $ a graded $ \mathcal{A} $-module. In this paper, we introduce the concept of graded weakly $ J_{gr} $-semiprime submodules as a generalization of graded weakly semiprime submodules. We study several results concerning of graded weakly $ J_{gr} $ -semiprime submodules. For example, we give a characterization of graded weakly $ J_{gr} $-semiprime submodules. Also, we find some relations between graded weakly $ J_{gr} $-semiprime submodules and graded weakly semiprime submodules. In addition, the necessary and sufficient condition for graded submodules to be graded weakly $ J_{gr} $-semiprime submodules are investigated. A proper graded submodule $ U $ of $ \mathcal{D} $ is said to be a graded weakly $ J_{gr} $-semiprime submodule of $ \mathcal{D} $ if whenever $ r_{g}\in h(\mathcal{A}), $ $ m_{h}\in h(\mathcal{D}) $ and $ n\in \mathbb{Z} ^{+} $ with $ 0\neq r_{g}^{n}m_{h}\in U $, then $ r_{g}m_{h}\in U+J_{gr}(\mathcal{D}) $, where $ J_{gr}(\mathcal{D}) $ is the graded Jacobson radical of $ \mathcal{D}. $
Investigating the role of organizational stress in nurses' psychosomatic complaints: Evidence from a study in northeastern Italy
Authors: Marcatto Francesco , Patriarca Emilia , Bramuzzo Davide , Lucci Emanuela , Filon Francesca Larese
Published: March 2024

Background

Nursing is pivotal to healthcare delivery but is often associated with high levels of organizational stress. In this cross-sectional study, we aimed to investigate the associations between exposure to organizational stressors, measured using the Health and Safety Executive Management Standards Indicator Tool, and psychosomatic complaints among nurses in a medium-sized city hospital in northeastern Italy.

Methods

A total of 215 nurses participated in the study, completing self-report questionnaires assessing organizational stressors and the prevalence of psychosomatic complaints experienced over the preceding six months.

Results

Significant associations were observed between various organizational stressors and psychosomatic complaints among nurses. Specifically, the Relationships factor emerged as a significant predictor of palpitations, irritability, anxiety, physical and mental tiredness, and headache. Additionally, Demands and Managers' support were identified as significant predictors of specific psychosomatic complaints.

Conclusion

This study highlights the critical role of addressing organizational stressors, particularly those related to interpersonal relationships, in promoting nurse well-being and optimizing patient care delivery. Despite its strengths, including the use of a well-established measurement tool and a comprehensive assessment of psychosomatic complaints, limitations such as the cross-sectional design and self-report measures warrant consideration. By prioritizing supportive work environments and implementing targeted interventions, healthcare organizations can cultivate a culture of well-being among nurses, ultimately enhancing the quality and safety of healthcare delivery.
Closing the Cloud Skills Gap with Learner-Centric Performance Support Experiences
Authors: Byrne Saliga Jani , Brooks Powell Natalie
Published: March 2024

Spurred by the urgent need to respond to a growing worldwide technology skills gap, the IBM Cloud Skills Initiative, launched in 2019, today plays an important role in supporting IBM’s commitment to provide people with the skills needed to fill the jobs of tomorrow. The IBM Center for Cloud Training (ICCT) serves as a critical learning resource for helping achieve the initiative’s goal of closing the global cloud skills gap. Through an innovative training program launched in October 2020, ICCT offers Performance Support Experiences (PSEs) designed to motivate and support learners and facilitate their achievement of program credentials and their pursuit of IBM Cloud certification. With PSEs that include online, real-time, and customized study support, ICCT surpassed its stated goal of credentialing participants by the end of 2022. The primary purpose of this article is to describe the components of the program and outcomes achieved and in so doing demonstrate the value of the center’s PSE-based approach to learning.
Une approche de la sociolinguistique en Aragon
Authors: Calvo Alejandro Pardos , Mateo Antonio Eito , Servós Chaime Marcuello
Published: March 2024

La langue aragonaise a fait l'objet de recherches récurrentes sous différentes perspectives au cours des dernières décennies. Cet article propose une lecture des études sociolinguistiques les plus pertinentes. Pour ce faire, nous commençons par les études sur le castillan d'Aragon, qui comprennent la première vision sociolinguistique de l'aragonais, même si subordonnée à la langue officielle, l'espagnol. Ensuite, nous analysons la production sociolinguistique sur la langue aragonaise, depuis les premières études jusqu'aux plus récentes. On constate que la seule langue propre à l'Aragon subit une situation de plus en plus minoritaire, avec une communauté de locuteurs affaiblie et un soutien institutionnel limité. Elle bénéficie d'une tradition de recherche moins développée. Cependant, il est possible d'affirmer que la recherche sociolinguistique en Aragon compte des publications pertinentes présentant des données, des réflexions et des propositions qui permettent de mieux comprendre l'aragonais contemporain et la situation tragique dans laquelle il se trouve.
Contact avec le français et registres de l'occitan moderne (XVIe-XVIIIe siècle)
Authors: Courouau Jean-François
Published: March 2024

L’introduction du français en domaine occitan, qui par nature favorise l’emprunt, est un phénomène ancien (milieu XVe siècle), progressif mais aussi régionalement différencié et socialement conditionné. On peut donc supposer que, dans la réalité des échanges oraux en occitan pendant la période moderne (XVIe-XVIIIe siècle), la variation diastratique vient s’ajouter à la variation diatopique inhérente à l’état dialectal de cette langue. Les seuls témoignages de l’occitan moderne dont on dispose sont constitués par des textes de nature littéraire et ceux-ci laissent bien apparaître à l’occasion par l’usage contrasté de francismes et de formes antérieures l’existence de registres linguistiques en occitan, avec un registre supérieur marqué par une extrême proximité avec le français (emprunts). Les études sur la littérature occitane moderne qui ne s’intéressent pratiquement jamais au phénomène des francismes auraient sans doute beaucoup à gagner à prendre en considération les emprunts de l’occitan au français comme indices de registres.
L’impossible résistance : un parcours féministe au sein de l’Université américaine au Texas
Authors: Sanos Sandrine
Published: March 2024

Cet article examine les contradictions inhérentes au dispositif réglementaire encadrant les discriminations de genre et les violences sexuelles et sexistes dans l’enseignement supérieur états-unien. À partir d’un cas de recours pour harcèlement sexuel, qui a lieu dans le contexte politique du Texas, au sein d’une université publique et régionale, notre analyse met l’accent sur des stratégies de contournement nécessaires pour faire face à une culture dominante qui euphémise ces actes et en invisibilise les logiques et les effets. Comment, dans le contexte d’une priorité accordée à l’ordre dominant de race, de classe et de genre ainsi qu’à une rationalité économique et gestionnaire, dénoncer les violences de genre et les situations d’abus ? Comment ouvrir des espaces d’agentivité collective et mettre fin aux situations systémiques de continuum de violences de genre ?
AI-Enabled Robotics
Authors: Gobinath A. , Manjula Devi  , Rajeswari P. , Srinivasan A. , Pavithra Devi
Published: March 2024

The merger of artificial intelligence (AI) and robotics constitutes a paradigm shift in the field of automation, resulting in AI-enabled robotics. This abstract provides a succinct summary of the essential characteristics and consequences of artificial intelligence-enabled robotics. AI-enabled robotics enhances the capabilities of robotic systems by utilizing advanced machine learning algorithms and computational intelligence. AI and robotics collaboration gives robots the ability to detect, learn, adapt, and make intelligent judgments, resulting in unparalleled levels of autonomy and efficiency. Computer vision, natural language processing, and machine learning algorithms are key components of AI-enabled robotics, allowing robots to perceive and respond to complex stimuli in real time. This combination of AI and robotics not only allows for the automation of repetitive tasks, but also allows for the execution of complex and context-sensitive processes across multiple domains.
Applications of Artificial Intelligence in Thrust Manufacturing
Authors: Ramkumar P. , Princye P. Hosanna , Satishkumar D. , Ahila A. , Thangaraj Cynthia Anbuselvi
Published: March 2024

Dive deep into the many ways AI is revolutionizing thrust manufacturing in the aerospace sector with this in-depth study piece. Many parts of production are being rethought by artificial intelligence technology, from design optimization to real-time monitoring. Precision, efficiency, and creativity in the production of thrust systems are showcased in this study, which investigates the revolutionary influence of AI on predictive maintenance, quality control, supply chain management, and human-machine collaboration.
A study on textile microfiber contamination in the gastrointestinal tracts of Merluccius merluccius samples from the Tyrrhenian Sea
Authors: Santonicola Serena , Volgare Michela , Schiano Marica Erminia , Cocca Mariacristina , Colavita Giampaolo
Published: March 2024

The increased demand and consumption of synthetic textiles have contributed to microplastic pollution in the form of microfibers. These particles are widely spread in the aquatic environment, leading to the exposure of marine biota, including edible species. The current study aimed to assess the extent of microfiber contamination in a commercially relevant fish species, Merluccius merluccius, which is considered a small-scale bioindicator for the monitoring of plastic ingestion in the Mediterranean coastal environment. The frequency of ingestion, abundance, and composition of textile microfibers isolated from the fish gut were characterized. Results showed the occurrence of microfibers in 75% of the samples, with a mean number of 10.6 microfibers/individual, of which 70% were classified as natural microfibers. The spectroscopic analyses confirmed both the visual identification of microfibers and the prevalence of cellulosic fibers. The obtained findings provided evidence of both natural/artificial and synthetic microfiber exposure in an important commercial fish species that, considering the consumption of small individuals without being eviscerated, may be a potential route of microfiber exposure in humans. Monitoring programs for fishery products from markets are needed to assess contamination levels and human health risks. In addition, measures to control microfiber pollution need to occur at multiple levels, from textile industries to international governments.
Molecular evidence of Toxoplasma gondii from the tissue and blood of naturally infected sheep
Authors: Abdullah Shadan Hassan
Published: March 2024

Toxoplasmosis is a cosmopolitan zoonotic infection that has significant effects on public health and causes economic losses in the livestock industry. The current study was designed to detect the Toxoplasma parasite in sheep blood samples and tissue samples of slaughtered sheep at the Sulaimani abattoir using molecular techniques. A total of 300 peripheral sheep blood samples were randomly collected from 20 small ruminant flocks at 4 locations in the Sulaymaniyah province, northern Iraq. Also, 150 meat samples from thigh muscle, heart, and diaphragm were collected from slaughtered sheep. All collected blood samples were subjected to polymerase chain reaction (PCR) amplification to confirm Toxoplasma infection; in addition, meat samples were also analyzed for Toxoplasma by PCR following the digestion process. Of the 300 amplified blood samples, 94 were considered positive for Toxoplasma gondii, with a prevalence rate of 31.3%. The overall prevalence of Toxoplasma among meat samples was 34%. The diaphragm reported a higher infection rate (46%) than the heart (32%), while the femoral muscle reported an infection rate of 24%. Aged animals (older than 24 months) presented a higher infection rate (32.8%) than younger animals (28.9%). Contact with or consumption of uncooked meat from infected sheep increases the chance of parasite transmission to humans.
EASA Expert Group: Science, Technology, Engineering, Mathematics in Arts and Culture (STEMAC)
Authors: Liritzis Ioannis
Published: March 2024

Conceptualization of STEMAC and Academy's commitments.
 
Contributing Members of the Expert Group:Prof. Klaus Mainzer, I; Prof. Zsolt Lavicza, IV; Prof. Kristof Fenyvesi, III; Prof. Violeta Dinescu, III; Prof. Sergio Orlandi, VI; Prof. Hui Yu, III; Prof. Livia Teodorescou-Ciocanea, III; Dr Marios Ioannou Elias, III; Prof Michael Cosmopoulos, I; Prof Tom Levy, I; Prof. David Devraj Kumar, IV; Prof. Wolfgang Mastnak, III; Prof. Riccardo Pozzo, I; Prof Tassos Bountis, IV; Prof. Fernando Feliu-Moggi, I; Prof. Niki Evelpidou; Prof. Dominik Lengyel, III.