Miracle-dz/UniFAR-FTUs huggingface dataset:
Boundary Work and Transactive Memory Systems in Teams: Moderating Effects of the Visibility Affordance

Individuals in work teams frequently cross boundaries across teams, often by using information and communication technologies (ICTs). The current study investigates the effects of members’ boundary work and the visibility affordance of teams’ ICTs on Transactive Memory Systems (TMS) in teams. Survey data from 212 full-time employees whose work hours were divided between multiple teams reveals that boundary spanning enhances the focal team’s TMS specialization and credibility and negatively influences TMS coordination. Additionally, boundary reinforcement positively affects TMS credibility and coordination. The visibility affordance has a direct positive effect on all three dimensions of TMS and a moderating effect for boundary reinforcement such that higher visibility overrides the positive direct effect of boundary reinforcement on TMS. These findings suggest that different types of boundary work contribute to different dimensions of TMS and that teams might consider prioritizing the use of ICTs with high visibility to enhance their TMS.
Characteristics of parents living apart in Norway: Comparing four residence arrangements

Objective: This study investigates differences in characteristics between parents practicing four different residence arrangements by applying a novel categorisation of residence arrangements. Background: The research field on factors associated with shared and sole physical residence is growing. This binary approach may neglect important differentials within these two groups. Method: The sample included 1007 parents from the FamC-study, recruited from family counselling offices across Norway. Mixed effects multinomial regression analyses were used to estimate the likelihood of practicing four residence arrangements (i.e. symmetric shared, asymmetric shared, extended sole and limited sole residence) based on relevant factors (i.e. number and age of children, time since separation, financial difficulties, employment status, new partners, interparental dynamics and mental health). Results: Parents with more and older children, fewer financial difficulties and who separated more recently had higher likelihood of practising symmetric shared residence. Parents with younger children were more likely to practise asymmetric shared residence. Parents with younger and fewer children and who had been separated for longer had higher likelihood of practising extended sole residence. Lastly, parents with fewer children and who had more financial difficulties were more likely to practise limited sole residence. Conclusion: The current findings reveal differences between four residence arrangements when expanding the traditional division between "shared" and "sole" residence, emphasising the importance of using a nuanced differentiation of residence arrangements.
Adaptive Template Reconstruction for Effective Pattern Classification

A novel instance-based algorithm for pattern classification is presented and evaluated in this paper. This new method is motivated by the challenge of pattern classifications where only limited and/or noisy training data are available. For every classification, the proposed system transforms the query data and the training templates based on their distributions in the feature space. One of the major novelties of the proposed method is the concept of template reconstruction enabling improved performance with limited training data. The technique is compared with similar algorithms and evaluated using both the image and time-series modalities to demonstrate its effectiveness and versatility. Two public image databases, FASHION-MNIST and CIFAR-10, were used to test its effectiveness for the classification of images using small amounts of training samples. An average classification improvement of 2~3% was observed while using a small subset of the training database, compared to the performances achieved by state-of-the-art techniques using the full datasets. To further explore its capability in solving more challenging classification problems such as non-stationary time-series electroencephalography (EEG) signals, a clinical grade 64-electrode EEG database, as well as a low-quality (high-noise level) EEG database, obtained using a low-cost system equipped with a single dry sensor, have also been used to test the algorithm. Adaptive reconstruction of the feature instances has been seen to have substantially improved class separation and matching performance for both still images and time-series signals. In particular, the method is found to be effective for the classification of noisy non-stationary data with limited training data volumes, indicating its potential suitability for a wide range of applications.
Design, Analysis and Experiments of a High-Speed Water Hovering Amphibious Robot: AmphiSTAR

The development, modeling, and performance of AmphiSTAR, a novel high-speed amphibious robot, are detailed in this paper. The robot is palm-sized and fitted with propellers at its bottom, enabling it to crawl on the ground and hover on the water at high speeds. The design of the AmphiSTAR is inspired by two members of the animal kingdom - the cockroach’s sprawling mechanism and the Basilisk lizard’s ability to hover on the water at high speeds. We developed a relatively simple physical model of the lift force as a function of the size of the propeller, its submersion level, and rotational speed. We built an experimental setup to validate the results, and the experimental results are consistent with the analytical model. The robot can crawl at 3.6 m/s (13.6 bodylengths/s) and hover continuously on water surfaces at 1.5 m/s (5.6 bodylengths/s) speeds, making it the fastest amphibious robot. Its elevation on the water surface reduces friction, and its high-speed motors provide forward thrust, enabling it to move at high speeds. Additionally, it can swim by rotating its propellers while floating at low speeds and transition from swimming to crawling (see video).
Lie Group Integrators for Cotangent Bundles of Lie Groups and Their Application to Systems of Dipolar Soft Spheres

The objective of this thesis is to study numerical integrators and their application to solving ordinary di erential equations arising from mechanical systems. Many mechanical problems are naturally formulated on Lie groups or on the groups' tangent or cotangent bundle, especially those where the equations of motion are derived from variational principles. The bundles inherit the structure of the original Lie group and can be considered Lie groups themselves. Often these systems are highly complicated and one will need to use numerical methods for solving them. One class of numerical methods which is particularly suitable for such problems is Lie group integrators. We shall apply the Runge-Kutta-Munthe-Kaas (RKMK) methods in such a setting. We will give an introduction to Lie group theory, which we utilize to identify a Lie group structure on the cotangent bundles of Lie groups. Next, we provide a short overview of Lagrangian and Hamiltonian mechanics. Thereafter, we will conduct numerical experiments on two Hamiltonian systems using the RKMK methods. The rst system concerns the motion of a free rigid body, and the second system the motion of a system of identical dipolar soft spheres in a molecular dynamics setting.
An implicit locking‐free B‐spline Material Point Method for large strain geotechnical modelling

The Material Point Method (MPM) has drawn great attention in the numerical modelling of large deformation, geotechnical problems. The popularity of MPM is mainly because its formulation shares significant similarities with the Finite Element Method. In MPM, the iteration points can move independently from the mesh, allowing for the resolution of large deformation problems. However, because of this, the original MPM formulation suffers from the well‐known cell‐crossing noise and volumetric‐locking instabilities, resulting in a strongly oscillated stress field. A novel implicit locking‐free B‐spline MPM that controls stress oscillations to a negligible level is proposed in this paper. A novel, but very straightforward B‐spline shape function implementation procedure, avoids the need for a complex material point searching algorithm, providing seamless transformation from the original MPM to this robust B‐spline MPM, aiming at modelling large‐strain geotechnical problems. The newly proposed volumetric locking mitigation strategy is also very easy to implement, which facilitates the reproducibility of this research. The proposed method is validated against three numerical studies: granular column collapse experiment, slope failure and footing with large penetration. The proposed numerical method agrees well with experiments reported in the literature and previous numerical studies. Also, these numerical examples show that the proposed method provides a more prominent stress field than other available methodologies.
Eucalyptus kraft pulp bleaching: state-of-the-art and new developments

Chemical demand, yield, water consumption, effluent load and treatability, pulp organic chlorine compounds (OX), brightness stability, refinability, and strength are drivers for choosing bleaching technology. This work critically reviews the state-of-the-art processes for oxygen delignification, first stage, second stage, and final bleaching of eucalyptus kraft pulp in light of those drivers. Emerging technologies, such as the PMo stage and formaldehyde assisted bleaching, are discussed. Implementation of single- or double-stage oxygen delignification is determined by the pulp “true” lignin content. High pulp HexAs content and poor selectivity limits dropping kappa number under 9-10 in single or double O-stage. Mo-catalyzed acid peroxide delignification after O-stage allows further reduction of kappa number to 3-4. Efficient post-oxygen washing is the key for low cost bleaching, with a kilogram of COD/o.d. ton consuming the equivalent to 0.085% active chlorine. A/D-(EP)-D type three-stage sequence suffices for bleaching eucalyptus kraft pulps. The inclusion of a fourth stage is desirable for high brightness/low reversion pulps. Chemical consumption is strongly influenced by brown pulp origin, with variations of 3.2% to 7.7% active Cl2 demand, depending upon the pulp type. The type of elemental chlorine free (ECF) bleaching technology, based on chlorine dioxide, affects chemical consumption only slightly. Hot acid/hot chlorine dioxide bleaching technology saves small amounts of active chlorine for high bleachability pulps, but none for low bleachability ones. Atmospheric extraction (EP) suffices for eucalyptus kraft pulp bleaching. Formaldehyde saves more chlorine dioxide when used in D1 than in D0/DHT stages. A final peroxide stage improves pulp brightness stability. The production of organically bound chlorine decreases by 30% with hot chlorine dioxide bleaching, but this gain disappears after effluent biological treatment.
Searching for neutrinos from microquasar flares with ANTARES and KM3NeT

Very high energy emissions are believed to happen through particle acceleration in the jet originating from microquasars. This hypothesis was corroborated by the recent detections from the HAWC collaboration of very high energy gamma-ray events in the vicinity of SS433 and V4641Sgr microquasars. Through hadronic processes, neutrinos are produced together with these gamma-rays. We present results from a search of a neutrino signal from 13 microquasars which, according to multiwavelength observations, exhibited events of fast bulk ejecta in the context of outbursts characterized by strong X-Ray flares and spectral state transitions. This search is focused on X-Ray flaring and transitioning periods determined from RXTE/ASM, MAXI/GSC and Swift/BAT public data monitoring. The analysis is performed using data from the ANTARES neutrino telescope, which was dismantled during 2022 after 16 years of steady data acquisition, as well as with its successor KM3NeT, in construction in the Mediterranean Sea, with data from the KM3NeT/ORCA detector in its 6 lines configuration. No significant excess was found and upper limits on the neutrino fluxes are computed in the total observed flaring times and in specific spectral states.
Estimación de materiales lignocelulosicos residuales como adsorbentes de cromo y plomo

Los materiales lignocelulósicos residuales de origen vegetal pueden usarse como adsorbentes de metales pesados presentes en el agua, propiciando la adsorción de los iones metálicos sobre la superficie y sitios activos de los materiales adsorbentes de origen natural, lo que resulta en una remoción eficiente y de bajo costo. En este caso, los residuos del aprovechamiento agroindustrial del fique (Furcraea macrophilla) y el residuo agrícola del capacho de maíz (Zea mays) se estudiaron como fases adsorbentes de los metales cromo y plomo, con el fin de valorar su capacidad como adsorbente de estos metales presentes en muestras de agua. Los resultados encontrados muestran que la fibra de fique tiene una capacidad de adsorción de Cr y Pb de 7,81 ± 1,40 mg/g y 169,51 ± 1,37 mg/g respectivamente, observando, según los datos experimentales, una forma de isoterma de adsorción tipo Freundlich; mientras que la fibra de capacho de maíz presenta una capacidad de adsorción de 13,35 ± 3,28 mg/g para cromo y 15,01 ± 3,47 mg/g para plomo, mostrando de forma gráfica un comportamiento en su isoterma de adsorción tipo Langmuir.
Development of hadronic emission processes in the open-source python package AGNpy

AGNpy is an open-source python package designed to model the radiative processes at work in the jets of active galactic nuclei (AGN) and blazars, whose high energy emission can arise due to both leptonic and hadronic processes. The former assumes the emission to be dominated by electrons and positrons, while the latter considers a significant contribution by protons. A first version of the package allowed a fully leptonic interpretation of the sources spectral energy distribution (SED). However, the evidence for multi-messenger photon and neutrino emission from the blazar TXS 0506+056, in 2017, suggested blazars as potential neutrino – and thus cosmic-ray – sources giving relevance to the role of protons in blazar jets. In this contribution we present the implementation of the first hadronic processes in AGNpy: synchrotron emission from accelerated protons and radiation of secondaries from photo-meson interactions, in particular. The user is now able to model the sources SED also by means of hadronic and lepto-hadronic processes and to estimate the spectra of the produced muons and neutrinos. We show the software validation through comparison with other codes and few examples of application. These additions make agnpy the first open-source software allowing also a lepto-hadronic interpretation of AGNs emission. The
Compact Bandpass-Filtering Response Power Dividers with High Isolation and High Frequency Selectivity

ABSTRACT A compact power divider integrated filtering response with high isolation and high frequency selectivity is presented in this article. The four short-circuited-loaded quarter-wavelength resonators are employed to construct the presented compact power divider. The presented divider can be viewed as an integration of a second-order dual-mode bandpass filter and the quasi-Wilkinson power divider. In order to improve the frequency selectivity of passband, the cross-coupling circuits between input port and output ports are used. A power divider with bandpass-filtering response is designed, fabricated, and measured. The operating central frequency of the fabricated power divider is at 2.43 GHz. The measured 3-dB insertion loss bandwidth is about 180 MHz and the measured minimum insertion loss is about 0.85 dB. The measured isolation between the output ports is around 30 dB.
Comparative Biochemical, Structural, and Functional Analysis of Recombinant Phospholipases D from Three Loxosceles Spider Venoms

Spiders of Loxosceles genus are widely distributed and their venoms contain phospholipases D (PLDs), which degrade phospholipids and trigger inflammatory responses, dermonecrosis, hematological changes, and renal injuries. Biochemical, functional, and structural properties of three recombinant PLDs from L. intermedia, L. laeta, and L. gaucho, the principal species clinically relevant in South America, were analyzed. Sera against L. gaucho and L. laeta PLDs strongly cross-reacted with other PLDs, but sera against L. intermedia PLD mostly reacted with homologous molecules, suggesting underlying structural and functional differences. PLDs presented a similar secondary structure profile but distinct melting temperatures. Different methods demonstrated that all PLDs cleave sphingomyelin and lysophosphatidylcholine, but L. gaucho and L. laeta PLDs excelled. L. gaucho PLD showed greater “in vitro” hemolytic activity. L. gaucho and L. laeta PLDs were more lethal in assays with mice and crickets. Molecular dynamics simulations correlated their biochemical activities with differences in sequences and conformations of specific surface loops, which play roles in protein stability and in modulating interactions with the membrane. Despite the high similarity, PLDs from L. gaucho and L. laeta venoms are more active than L. intermedia PLD, requiring special attention from physicians when these two species prevail in endemic regions.
Leadership styles in western & eastern societies and its relation with organizational performance

This study aimed to see the prevalent leadership style in various national & international business organizations & to observe the relationship between leadership styles & organizational growth at national & international level as well in both Eastern and Western societies. One of the ways through which organizations do improve their performance is by strong team of leadership among their executives. Innovation is a critical force in the improvement of organizational performance and in enhancing economic growth and development. More so, organizations must be innovative to survive and flourish in the competitive and rapidly changing environment. All hypotheses are null & tested on the basis of available documented researches, are empirical in nature preferably have been conducted at national & international level. As far as Indian scenario is concerned organizational survival is much more based on task oriented leadership at the same time in Western Culture it is more process oriented. It is therefore recommended that managers should: strive to become role models to their subordinates. The need of this study also force us to think that the way companies conduct business locally and globally, are changing rapidly and hence there is a critical need for managers and leaders to change their style of functioning (Charan, 2007; Hamel, 2007). In order to be successful in the corporate world, a leader is required to be equipped with a set of specific skills and qualities mentioned in this paper.
Ultra-high energy muons in radio neutrino detectors

With the prospect of large volume radio neutrino detectors such as RNO-G and IceCube-Gen2, measuring neutrinos above PeV energies is within reach. At these energies, atmospheric muons stemming from cosmic ray air showers represent a rare background: They penetrate the ice and can mimic the interaction of a neutrino through catastrophic energy losses. Due to both limited experimental measurements and limited modeling in hadronic interaction models, the expected event rate is subject to large uncertainties. In this study, we predict rates and associated uncertainties and evaluate mitigation strategies, such as parent air shower detection.
Electron exchange energy of neutral donors inside a quantum well

We calculated the exchange energy of a pair of donor-bound electrons placed in the middle of an inﬁnite quantum well (QW). In order to obtain this energy for any interdonor distance and for any QW thickness, we have ﬁrst adapted to a QW the method developed by Gor’kov and Pitaevskii [L. P. Gor’kov and L. P. Pitaevskii, Dokl. Akad. Nauk SSSR 151 , 822 (1963)] for a three-dimensional (3D) distribution of donors, and calculated the asymptotic form of the exchange energy. Second we have calculated the exchange energy of a “helium atom” in a QW; and third, inspired by the interpolation procedure proposed by Ponomarev et al. [I.V. Ponomarev et al. , Phys. Rev. B 60 , 5485 (1999)], we have obtained an interpolated expression for any interdonor distance. The obtained exchange energy is written in units of effective hartree, and the distance between the donors, as well as the width of the QW, are expressed in units of effective Bohr radius. We calculated the exchange energy for some commonly studied semiconductor materials, and discussed also the relationship between the exchange energy and the spin relaxation time for a donor concentration close to the insulator-metal transition.
Assembly of Genome and Resequencing Provide Insights into Genetic Differentiation between Parents of Hulong Hybrid Grouper (Epinephelus fuscoguttatus ♀ × E. lanceolatus ♂)

The Hulong hybrid grouper was bred from the brown-marbled grouper (Epinephelus fuscoguttatus) ♀ and the giant grouper (E. lanceolatus) ♂, combining the advantageous traits of both parents. Possessing an excellent performance, this hybrid’s cultivation promotes the development of the grouper industry. Its male parent, the giant grouper, possesses the fastest growth and the largest body size among all coral-reef-dwelling fish. This species is not only an economically important species in marine aquaculture, but it is also an ideal male parent in the interspecific crossing of grouper species. In the present study, a high-quality chromosome-level genome of the giant grouper was constructed with a total length of 1.06 Gb, consisting of 24 chromosomes and 69 scaffolds. To analyze the genetic differences between the parents of the Hulong hybrid grouper, the structural variations (SVs) between both parental genomes were detected, and a total of 46,643 SVs were obtained. High-quality SNPs were identified from resequencing data. There were significant differences between the two genomes, and the average FST reached 0.685. A total of 234 highly differentiated regions were detected with an FST > 0.9. The protein-coding genes involved in SVs and highly differentiated regions were significantly enriched in metabolic pathways, including fatty metabolism, carbohydrate metabolism, amino acid metabolism and the TCA cycle. These genes may be related to the differences in feeding preferences and the ability to digest carbohydrates between the two grouper species under natural conditions. In addition, protein-coding genes related to the cell cycle and p53-signaling pathway were also detected. These genes may play important roles in the regulation of body size and growth performance. This research provides genomic resources for further breeding works and evolutionary analyses.
A Proposal to increase by genetic algorithm the discriminatory

Dos de las tecnicas mas ampliamente utilizadas en el campo del reconocimiento de rostros con imagenes infrarrojas son PCA (Principal Component Analisys) y LDA (Linear Discriminant Analysis). En este trabajo se presentan los resultados obtenidos al emplear algoritmos geneticos para incrementar el poder discriminante de los vectores que conforman el espacio de caracteristicas generado por dichas tecnicas, por medio de la asignacion ponderada de pesos a cada vector segun su nivel de aporte en la etapa de clasificacion. Se muestra que bajo el esquema propuesto, se obtiene un menor error de clasificacion respecto al metodo convencional. PACS: 07.05. Pj, 07.57. Kp, 85.25. Pb, MSC: 68T05