Péricles José Pires, Victor Matheus Batista Nascimento Sedovin, Ricardo Mendes Junior
et al.
A investigação apresenta um tema emergente no campo da Ciência da Informação: a relação entre a competência digital do estudante com o uso de tecnologias digitais para aprendizagem. O foco do trabalho é entender como a competência em informação influencia a intenção de uso da tecnologia digital pelos estudantes quanto as informações para a sua aprendizagem. O objetivo é apresentar um modelo que explique esta possível relação, utilizando como suporte teórico modelos de uso e aceitação de tecnologia. Para tanto, ela adota um enfoque descritivo com abordagem quantitativa no seu desenvolvimento, com a aplicação de 280 questionários online com estudantes de graduação dos cursos de Administração, Economia, Contabilidade e Gestão da Informação da Universidade Federal do Paraná. A realização de testes estatísticos e a análise multivariada de dados analisou as relações de causa-efeito entre os construtos do modelo proposto na investigação. Como suporte estatístico, empregou-se a técnica de modelagem de equações estruturais, com o uso do software SmartPLS versão 4.1. Os resultados indicaram a relação dos itens da competência em informações com a variável dependente intenção de uso. As hipóteses testadas indicaram que a facilidade de uso percebida quanto ao tratamento de busca e uso da informação são significativos. No entanto, não foi comprovada a relação direta entre a utilidade percebida e a competência em informação, somente comprovada quando está relacionada indiretamente através a facilidade de uso. Pode-se concluir que quanto maior for a facilidade de uso das informações obtidas maior será a intenção de uso de tecnologias digitais.
Diplomatics. Archives. Seals, Bibliography. Library science. Information resources
This article examines the institutional framework of the educational and cultural action departments of two modern and contemporary art museums in Spain: the Museo Patio Herreriano (Valladolid) and the Museo Ralli Marbella (Málaga). Their situation is constantly evolving, and in recent years the outsourcing of these services to private companies has become increasingly widespread. The principal aim of this study is to conduct a preliminary exploration of the current shortcomings of museum education departments, in relation to their structural situation and museological perspective. To this end, a theoretical framework of the national context underpinning the research is established, and two representative case studies of contemporary art museums in Spain are compared through the interview method. Analysing the gaps, weaknesses, potentialities, and needs of educational departments is essential for understanding their current state and proposing improvements that dignify the profession and foster more inclusive and socially engaged institutions. Among the main conclusions of this study are the need to employ a greater number of professionals within educational departments, the lack of consensus regarding the primary functions of the educational role, the importance of increased collaboration with external entities, and the necessity of enhancing the profession to overcome precarious working conditions and promote more inclusive museums.
Barbara Lipinski, Luciane de Fátima Beckman Cavalcante
Os centros culturais são aliados na preservação e disseminação da informação para a transformação da coletividade por meio da realização da mediação cultural ocorrida por intermédio de ações culturais. O artigo objetivou analisar se a mediação cultural promovida pelos bibliotecários do Centro Integrado de Cultura de Florianópolis contribui para a competência crítica em informação na comunidade em que se insere, ou seja, procurou mapear as ações culturais, as quais podem contribuir para a competência crítica em informação da comunidade local. A pesquisa caracterizou-se metodologicamente como básica, qualitativa, descritiva e exploratória, bem como por revisão bibliográfica e estudo de caso, utilizando a entrevista semi-estruturada para a coleta de dados e a técnica da análise categorial de Bardin para as análises. Os resultados apontaram que os bibliotecários atuam na Biblioteca de Arte e Cultura e no Museu de Arte de Santa Catarina, sendo a Biblioteca a promotora de 12 atividades culturais, das quais cinco contribuem para o desenvolvimento da competência crítica em informação. O estudo verificou que a mediação cultural, desenvolvida pelos bibliotecários, promoveu uma reflexão crítica da realidade na sociedade e, a partir disso, a pesquisa pôde refletir acerca do papel do bibliotecário e dos centros de cultura como agentes de (trans)formação social. Sugere-se que os bibliotecários possam buscar mais conhecimento no tocante às questões da mediação cultural e pensar em ações mais direcionadas à mediação cultural e à CCI, com a finalidade de atingirem um maior número de pessoas e contribuírem para um melhor entendimento da ação pelos sujeitos.
Diplomatics. Archives. Seals, Bibliography. Library science. Information resources
The subgenus Leioproctus (Euryglossidia) is a large group of Australian Neopasiphaeine bees in need of revision. Forty-five new species are described, bringing the number of recognised names to 60. Four new synonymies are proposed, one species is transferred to Leioproctus (Colletellus) and one remains species inquirenda. No change is required in the diagnostic characters of the group, which is recognised by the presence of two submarginal cells in the forewing and a short jugal lobe on the hind wing. The new species demonstrate continuous character variation from rough to polished integument, iridescent to non-iridescent colour, sparse to close scopal hair of females without distinct breaks between subgroups. Detailed molecular investigation will be required before further subdivision is contemplated. Illustrations of diagnostic characters and identification keys are included.
This paper builds on "Collective Arbitrage and the Value of Cooperation" by Biagini et al. (2025, forthcoming in "Finance and Stochastics"), which introduced in discrete time the notions of collective arbitrage and super-replication in a multi-agent market framework, where agents may operate in several submarkets and collaborate through risk exchange mechanisms. Expanding on these foundations, we establish a First Fundamental Theorem of Asset Pricing and a collective pricing-hedging duality under different assumptions and with new techniques compared to Biagini et al. (2025). We further introduce the notion of collective replication in order to study collective market completeness and provide a Second Fundamental Theorem of Asset Pricing in this cooperative multi-agent setting.
Francesco Navarra, Ayesha Asloob Qureshi, Giancarlo Rinaldo
We explore the novel connection between rook placements on collections of cells, also known as pruned chessboards, and the algebraic properties of ideals generated by $2$-minors. We design an algorithm to compute the switching rook polynomial of a collection of cells and show that it coincides with the $h$-polynomial of the associated coordinate ring for all collections up to rank 10 and polyominoes up to rank 12. Motivated by this evidence, we conjecture that the correspondence holds in general, and we prove it for certain convex collections of cells by algebraic tools.
Christopher Reedman, Phil Davidson, Jonathan Larwood
et al.
Fossil collecting along parts of the Dorset and East Devon Coast World Heritage Site is managed via codes of conduct. This paper provides an outline of their terms, an account of how they operate in practice, and a discussion on how best to manage such a popular open access site of great paleontological importance. Both codes operate on rapidly eroding coastlines; such conditions require and support open collecting but subject to a degree of control afforded by the codes. They function as a series of practical considerations, recognizing the value gained by the recovery of fossils prior to damage by natural processes. Adherence to the codes and participation in the recording schemes is a condition of the transfer of ownership. The recording schemes provide a local record of scientifically important fossils and establish a mechanism for requesting access to specimens and a point of reference regarding potential acquisitions. The sustained recording of scientifically important fossils shows that the codes remain effective. The authors conclude that, taking account of all the circumstances specific to this Site, and subject to amendments that may be agreed occasionally, the codes provide the best practical means to manage this important but vulnerable paleontological resource.
General. Including nature conservation, geographical distribution
Three genera of the mantis subfamily Fulciniinae (Mantodea: Nanomantidae: Fuliciniinae) are revised. In the genus Glabromantis two species are recognized, in Paraoxypilus five species and in Phthersigena one species is recognized. The genus Myrmecomantis is synonymized with Paraoxypilus. Paraoxypilus laticollis is a new synonym of P. kimberleyensis. P. distinctus and P. flavifemur are new synonyms of P. tasmaniensis. Phthersigena centralis, Phthersigena insularis, Phthersigena minor, Phthersigena timorensis and Paraoxypilus insularis are new synonyms of Phthersigena conspersa. Glabromantis melania is a new synonym of Glabromantis nebulosa and Glabromantis pallidifemur is a new synonym of Glabromantis unicornis.
Entre los años noventa del siglo pasado y la primera década del actual, diversos estudios sobre la iconografía de los vasos ibéricos pintados con figuración han elaborado un nuevo marco teórico y de método. Se ha descendido al detalle de los signos, composiciones y recursos técnicos; y se ha propiciado la definición de talleres y pintores, que han pasado a ser dos aspectos más a tratar por la investigación. Estas páginas plantean algunas cuestiones sobre cómo acercarse a ellos.
History of the arts, Museums. Collectors and collecting
Recent advancements in IoT technologies have underscored the importance of using sensor data to understand environmental contexts effectively. This paper introduces a novel embedded system designed to autonomously label sensor data directly on IoT devices, thereby enhancing the efficiency of data collection methods. We present an integrated hardware and software solution equipped with specialized labeling sensors that streamline the capture and labeling of diverse types of sensor data. By implementing local processing with lightweight labeling methods, our system minimizes the need for extensive data transmission and reduces dependence on external resources. Experimental validation with collected data and a Convolutional Neural Network model achieved a high classification accuracy of up to 91.67%, as confirmed through 4-fold cross-validation. These results demonstrate the system's robust capability to collect audio and vibration data with correct labels.
Accurate hand motion capture and standardized 3D representation are essential for various hand-related tasks. Collecting keypoints-only data, while efficient and cost-effective, results in low-fidelity representations and lacks surface information. Furthermore, data inconsistencies across sources challenge their integration and use. We present UniHands, a novel method for creating standardized yet personalized hand models from wild-collected keypoints from diverse sources. Unlike existing neural implicit representation methods, UniHands uses the widely-adopted parametric models MANO and NIMBLE, providing a more scalable and versatile solution. It also derives unified hand joints from the meshes, which facilitates seamless integration into various hand-related tasks. Experiments on the FreiHAND and InterHand2.6M datasets demonstrate its ability to precisely reconstruct hand mesh vertices and keypoints, effectively capturing high-degree articulation motions. Empirical studies involving nine participants show a clear preference for our unified joints over existing configurations for accuracy and naturalism (p-value 0.016).
A wooden shield, made by a once-known Aboriginal person in Western Australia around the beginning of the twentieth century, sits in the Science Museum’s London stores. This paper focuses on its life in an East London match factory from about 1928 until 1937, when it was transferred to the Science Museum. The shield stands out among its Aboriginal counterparts now held by museums because curators at the Bryant and May Museum of Fire-Making Appliances (and subsequently at the Science Museum) did not prioritise its links with conflict or ceremony, nor the skill with which it was carved. Instead, unprepossessing marks on its back captured their attention. These saw-marks showed that this was not ‘just’ a shield: it had sometimes been used to make fire. Valued now as an example of global fire-equipment, it was subsumed into an English collection of fire making technologies. By tracing the shield’s early museum life, this paper considers how and why European collecting cultures have marshalled indigenous objects to promote narratives of supposed ‘progress’.
History of scholarship and learning. The humanities, Museums. Collectors and collecting
Muzeum na wolnym powietrzu w Kłóbce jest wciąż na etapie rozbudowy. Przygotowywane są dokumentacje dla kolejnych translokacji zabytkowych obiektów budownictwa chłopskiego na jego teren oraz rozbudowy zespołu recepcyjnego i pracy dydaktycznej. Placówka ta potwierdza jak ogromną rolę pełnią muzea regionalne w budowaniu społecznych więzi w niewielkich miejscowościach. Najczęściej mówiąc o wkładzie muzealnictwa w rozwój społeczny i gospodarczy kraju, odwołujemy się do dużych ośrodków miejskich i wielkich realizacji interesujących nas instytucji. Stają się one jednak tylko kolejną ofertą atrakcji turystycznej. Tymczasem na „prowincji”, chociaż twierdzę, że jest to obecnie pojęcie bardziej mentalne niż geograficzne, zachodzą dzięki muzeom niezwykłe i głębokie zmiany w mentalności ludzi, przekładające się na budowanie nowej, głębokiej tożsamości, która upodmiotowiła owe małe lokalne społeczności.
Artificial objects usually have very stable shape features, which are stable, persistent properties in geometry. They can provide evidence for object recognition. Shape features are more stable and more distinguishing than appearance features, color features, grayscale features, or gradient features. The difficulty with object recognition based on shape features is that objects may differ in color, lighting, size, position, pose, and background interference, and it is not currently possible to predict all possible conditions. The variety of objects and conditions renders object recognition based on geometric features very challenging. This paper provides a method based on shape templates, which involves the selection, collection, and combination discrimination of geometric evidence of the edge segments of images, to find out the target object accurately from background, and it is able to identify the semantic attributes of each line segment of the target object. In essence, the method involves solving a global optimal combinatorial optimization problem. Although the complexity of the global optimal combinatorial optimization problem seems to be very high, there is no need to define the complex feature vector and no need for any expensive training process. It has very good generalization ability and environmental adaptability, and more solid basis for cognitive psychology than other methods. The process of collecting geometric evidence, which is simple and universal, shows considerable prospects for practical use. The experimental results prove that the method has great advantages in response to changes in the environment, invariant recognition, pinpointing the geometry of objects, search efficiency, and efficient calculation. This attempt contributes to understanding of some types of universal processing during the process of object recognition.
Complex systems are usually non-stationary and their dynamics is often dominated by collective effects. Collectivity, defined as coherent motion of the whole system or of some of its parts, manifests itself in the time-dependent structures of covariance and correlation matrices. The largest eigenvalue corresponds to the collective motion of the system as a whole, while the other large, isolated, eigenvalues indicate collectivity in parts of the system. In the case of finance, these are industrial sectors. By removing the collective motion of the system as a whole, the latter effects are much better revealed. We measure a remaining collectivity to which we refer as average sector collectivity. We identify collective signals around the Lehman Brothers crash and after the dot-com bubble burst. For the Lehman Brothers crash, we find a potential precursor. We analyze 213 US stocks over a period of more than 30 years from 1990 to 2021. We plot the average sector collectivity versus the collectivity corresponding to the largest eigenvalue to study the whole market trajectory in a two dimensional space spanned by both collectivities. Therefore, we capture the average sector collectivity in a much more precise way. Additionally, we observe that larger values in the average sector collectivity are often accompanied by trend shifts in the mean covariances and mean correlations. As of 2015/2016 the collectivity in the US stock markets changed fundamentally.
Md Manjurul Ahsan, Muhammad Ramiz Uddin, Shahana Akter Luna
This paper explains the initial Monkeypox Open image data collection procedure. It was created by assembling images collected from websites, newspapers, and online portals and currently contains around 1905 images after data augmentation.
Roman Iakymchuk, Amandio Faustino, Andrew Emerson
et al.
Collective operations are common features of parallel programming models that are frequently used in High-Performance (HPC) and machine/ deep learning (ML/ DL) applications. In strong scaling scenarios, collective operations can negatively impact the overall application performance: with the increase in core count, the load per rank decreases, while the time spent in collective operations increases logarithmically. In this article, we propose a design for eventually consistent collectives suitable for ML/ DL computations by reducing communication in Broadcast and Reduce, as well as by exploring the Stale Synchronous Parallel (SSP) synchronization model for the Allreduce collective. Moreover, we also enrich the GASPI ecosystem with frequently used classic/ consistent collective operations -- such as Allreduce for large messages and AlltoAll used in an HPC code. Our implementations show promising preliminary results with significant improvements, especially for Allreduce and AlltoAll, compared to the vendor-provided MPI alternatives.