cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Integracion vertical y transmision de precios en los canales de distribucion de la chirla
Creators: name: Toribio, R. Jimenez
name: Del Hoyo, J.J. Garcia
name: Toribio, R. Jimenez
name: Del Hoyo, J.J. Garcia
Publisher: name: Unknown
Year: 2005
Subjects: subject: Production Economics
subject: Cointegracion
subject: causalidad
subject: mercados pesqueros
subject: chirla
subject: agregacion temporal
subject: cointegration
subject: causality
subject: fish markets
subject: striped venus
subject: temporal aggregation

description: Este trabajo pretende determinar la interaccion entre mercados pesqueros situados en diferentes niveles de la cadena comercial de la chirla extraida del litoral del Golfo de Cadiz. Se han considerado series de mercados en primera venta-lonjas pesqueras- ya de mercados mayoristas en destino -mercas. la metodologia empleada consiste en la realizacion de contrastes de raices unitarias, contrastes de cointegracion y formulacion de modelos vectoriales de correccion de error disenados para analizar relaciones de causalidad entre los mercadoes considerados. Asimismo, se realizan algunas precisiones acerca del efecto que produce la agregacion temporal en los resultados obtenidos. Para finalizarm se establecen conclusiones averca de la relacion de los resultados obetenidos con las pliticas de gestion de la pesqueria y de orgenacion de mercados puestas en marcha por la Junta de Andalucia, sobre todo en lo relativo a relaciones de causalidad a corto y largo plazo, a la existencia de ciertas distorsiones en la transmision de informacion y a la mejora de la eficiencia de este proceso...This paper analyzes the interaction between fishing markets along the distribution channel of the striped venus coming from the Gulf of Cadiz. Prices concerning ex-vessel and wholesale markets are used. The methodology used is based on unit root tests, cointegration tests, and the formulation of vector error correction models, in order to study causality among prices. In addition, some comments are made about the effects of temporal aggregation on the results. Finally, this study has allowed us to make some conclusions in relation to the management and market planning measures implemented by Junta de Andalucia regarding this fishery. These conclusions mainly deal with short-run and long-run causality relationships, the existence of distortions in the price transmission, and the improvement in the efficiency of this process.
Curiosity as a Self-Supervised Method to Improve Exploration in De novo Drug Design
Creators: name: Chadi, Mohamed-Amine
name: Mousannif, Hajar
name: Aamouche, Ahmed
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Machine Learning (cs.LG)
subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: In recent years, deep learning has demonstrated promising results in de novo drug design. However, the proposed techniques still lack an efficient exploration of the large chemical space. Most of these methods explore a small fragment of the chemical space of known drugs, if the desired molecules were not found, the process ends. In this work, we introduce a curiosity-driven method to force the model to navigate many parts of the chemical space, therefore, achieving higher desirability and diversity as well. At first, we train a recurrent neural network-based general molecular generator (G), then we fine-tune G to maximize curiosity and desirability. We define curiosity as the Tanimoto similarity between two generated molecules, a first molecule generated by G, and a second one generated by a copy of G (Gcopy). We only backpropagate the loss through G while keeping Gcopy unchanged. We benchmarked our approach against two desirable chemical properties related to drug-likeness and showed that the discovered chemical space can be significantly expanded, thus, discovering a higher number of desirable molecules with more diversity and potentially easier to synthesize. All Code and data used in this paper are available at https://github.com/amine179/Curiosity-RL-for-Drug-Design.
One-Loop Non-Planar Anomalous Dimensions in Super Yang-Mills Theory
Creators: name: McLoughlin, Tristan
name: Pereira, Raul
name: Spiering, Anne
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider non-planar one-loop anomalous dimensions in maximally supersymmetric Yang-Mills theory and its marginally deformed analogues. Using the basis of Bethe states, we compute matrix elements of the dilatation operator and find compact expressions in terms of off-shell scalar products and hexagon-like functions. We then use non-degenerate quantum-mechanical perturbation theory to compute the leading $1/N^2$ corrections to operator dimensions and as an example compute the large $R$-charge limit for two-excitation states through subleading order in the $R$-charge. Finally, we numerically study the distribution of level spacings for these theories and show that they transition from the Poisson distribution for integrable systems at infinite $N$ to the GOE Wigner-Dyson distribution for quantum chaotic systems at finite $N$.
description: 41 pages, 10 figures
Towards Question-based Recommender Systems
Creators: name: Zou, Jie
name: Chen, Yifan
name: Kanoulas, Evangelos
Publisher: name: arXiv
Year: 2020
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Conversational and question-based recommender systems have gained increasing attention in recent years, with users enabled to converse with the system and better control recommendations. Nevertheless, research in the field is still limited, compared to traditional recommender systems. In this work, we propose a novel Question-based recommendation method, Qrec, to assist users to find items interactively, by answering automatically constructed and algorithmically chosen questions. Previous conversational recommender systems ask users to express their preferences over items or item facets. Our model, instead, asks users to express their preferences over descriptive item features. The model is first trained offline by a novel matrix factorization algorithm, and then iteratively updates the user and item latent factors online by a closed-form solution based on the user answers. Meanwhile, our model infers the underlying user belief and preferences over items to learn an optimal question-asking strategy by using Generalized Binary Search, so as to ask a sequence of questions to the user. Our experimental results demonstrate that our proposed matrix factorization model outperforms the traditional Probabilistic Matrix Factorization model. Further, our proposed Qrec model can greatly improve the performance of state-of-the-art baselines, and it is also effective in the case of cold-start user and item recommendations.
description: accepted by SIGIR 2020
Additional file 2 of Journey of vulnerability: a mixed-methods study to understand intrapartum transfers in Tanzania and Zambia
Creators: name: Lavender, Tina
name: Bedwell, Carol
name: Blaikie, Kieran
name: Danna, Valentina Actis
name: Sutton, Chris
name: Chowa Tembo Kasengele
name: Wakasiaka, Sabina
name: Bellington Vwalika
name: Laisser, Rose
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 2: Table 1. Country-specific comparison of characteristics of those with and without intrapartum transfer.
Experimental demonstration of quantum memory for light
Creators: name: Julsgaard, Brian
name: Sherson, Jacob
name: Cirac, J. Ignacio
name: Fiurasek, Jaromir
name: Polzik, Eugene S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The information carrier of today's communications, a weak pulse of light, is an intrinsically quantum object. As a consequence, complete information about the pulse cannot, even in principle, be perfectly recorded in a classical memory. In the field of quantum information this has led to a long standing challenge: how to achieve a high-fidelity transfer of an independently prepared quantum state of light onto the atomic quantum state? Here we propose and experimentally demonstrate a protocol for such quantum memory based on atomic ensembles. We demonstrate for the first time a recording of an externally provided quantum state of light onto the atomic quantum memory with a fidelity up to 70%, significantly higher than that for the classical recording. Quantum storage of light is achieved in three steps: an interaction of light with atoms, the subsequent measurement on the transmitted light, and the feedback onto the atoms conditioned on the measurement result. Density of recorded states 33% higher than that for the best classical recording of light on atoms is achieved. A quantum memory lifetime of up to 4 msec is demonstrated.
description: 22 pages (double line spacing) incl. supplementary information, 4 figures, accepted for publication in Nature
Additional file 8 of Intron and gene size expansion during nervous system evolution
Creators: name: McCoy, Matthew J.
name: Fire, Andrew Z.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 8: Figure S7. Gene features across clades. Joy plots showing distribution of gene features (median gene length, median intron length, median exon length, median number of exons per gene, and number of genes).
An extremely powerful long-lived superluminal ejection from the black hole MAXI J1820+070
Creators: name: Bright, J. S.
name: Fender, R. P.
name: Motta, S. E.
name: Williams, D. R. A.
name: Moldon, J.
name: Plotkin, R. M.
name: Miller-Jones, J. C. A.
name: Heywood, I.
name: Tremou, E.
name: Beswick, R.
name: Sivakoff, G. R.
name: Corbel, S.
name: Buckley, D. A. H.
name: Homan, J.
name: Gallo, E.
name: Tetarenko, A. J.
name: Russell, T. D.
name: Green, D. A.
name: Titterington, D.
name: Woudt, P. A.
name: Armstrong, R. P.
name: Groot, P. J.
name: Horesh, A.
name: van der Horst, A. J.
name: Körding, E. G.
name: McBride, V. A.
name: Rowlinson, A.
name: Wijers, R. A. M. J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Black holes in binary systems execute patterns of outburst activity where two characteristic X-ray states are associated with different behaviours observed at radio wavelengths. The hard state is associated with radio emission indicative of a continuously replenished, collimated, relativistic jet, whereas the soft state is rarely associated with radio emission, and never continuously, implying the absence of a quasi-steady jet. Here we report radio observations of the black hole transient MAXI J1820$+$070 during its 2018 outburst. As the black hole transitioned from the hard to soft state we observed an isolated radio flare, which, using high angular resolution radio observations, we connect with the launch of bi-polar relativistic ejecta. This flare occurs as the radio emission of the core jet is suppressed by a factor of over 800. We monitor the evolution of the ejecta over 200 days and to a maximum separation of 10$''$, during which period it remains detectable due to in-situ particle acceleration. Using simultaneous radio observations sensitive to different angular scales we calculate an accurate estimate of energy content of the approaching ejection. This energy estimate is far larger than that derived from state transition radio flare, suggesting a systematic underestimate of jet energetics.
description: 57 pages, 8 figures, published in Nature Astronomy
Coupling of radial and non-radial oscillations of relativistic stars: gauge-invariant formalism
Creators: name: Passamonti, Andrea
name: Bruni, Marco
name: Gualtieri, Leonardo
name: Sopuerta, Carlos F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Linear perturbation theory is appropriate to describe small oscillations of stars, while a mild non-linearity is still tractable perturbatively but requires to consider mode coupling. It is natural to start to look at this problem by considering the coupling between linear radial and non-radial modes. Radial pulsations of a spherical compact objects do not per se emit gravitational waves but, if the coupling is efficient in driving and possibly amplifying the non-radial modes, gravitational radiation could then be produced to a significant level. In this paper we develop the relativistic formalism to study the coupling of radial and non-radial first order perturbations of a compact spherical star. From a mathematical point of view, it is convenient to treat the two sets of perturbations as separately parametrized, using a 2-parameter perturbative expansion of the metric, the energy-momentum tensor and Einstein equations in which $λ$ is associated with the radial modes, $ε$ with the non-radial perturbations, and the $λε$ terms describe the coupling. This approach provides a well-defined framework to consider the gauge dependence of perturbations, allowing us to use $ε$ order gauge-invariant non-radial variables on the static background and to define new second order $λε$ gauge-invariant variables describing the non-linear coupling. We present the evolution and constraint equations for our variables outlining the setup for numerical computations, and briefly discuss the surface boundary conditions in terms of the second order $λε$ Lagrangian pressure perturbation.
description: 23 pages, no figures, RevTeX 4.0. Minor changes to fit the version to appear in PRD
A Method to Polarize Stored Antiprotons to a High Degree
Creators: name: Rathmann, F.
name: Lenisa, P.
name: Steffens, E.
name: Contalbrigo, M.
name: Dalpiaz, P. F.
name: Kacharava, A.
name: Lehrach, A.
name: Lorentz, B.
name: Maier, R.
name: Prasuhn, D.
name: Ströher, H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Polarized antiprotons can be produced in a storage ring by spin--dependent interaction in a purely electron--polarized hydrogen gas target. The polarizing process is based on spin transfer from the polarized electrons of the target atoms to the orbiting antiprotons. After spin filtering for about two beam lifetimes at energies $T\approx 40-170$ MeV using a dedicated large acceptance ring, the antiproton beam polarization would reach $P=0.2-0.4$. Polarized antiprotons would open new and unique research opportunities for spin--physics experiments in $\bar{p}p$ interactions.
Additional file 7 of Acquired resistance to DZNep-mediated apoptosis is associated with copy number gains of AHCY in a B-cell lymphoma model
Creators: name: Chidimma Agatha Akpa
name: Kleo, Karsten
name: Oker, Elisabeth
name: Tomaszewski, Nancy
name: Messerschmidt, Clemens
name: López, Cristina
name: Wagener, Rabea
name: Oehl-Huber, Kathrin
name: Dettmer, Katja
name: Schoeler, Anne
name: Lenze, Dido
name: Oefner, Peter J.
name: Beule, Dieter
name: Siebert, Reiner
name: Capper, David
name: Dimitrova, Lora
name: Hummel, Michael
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 7: Figure S6. Full-length blot for Western blot image presented in Fig. 4.
title: Przemoc wobec dzieci w rodzinie
Creators: name: Helios, Joanna
name: Jedlecka, Wioletta
Publisher: name: E-Wydawnictwo. Prawnicza i Ekonomiczna Biblioteka Cyfrowa. Wydział Prawa, Administracji i Ekonomii Uniwersytetu Wrocławskiego
Year: 2019

description: Violence against children is the subject of interdisciplinary scientific research. Most often, this issue is considered on the basis of pedagogical and psychological sciences, less often on the ground of law sciences. Considerations focused on four main forms of violence against children in the family: physical and psychological violence, sexual violence and neglect. The monograph presents many aspects of physical abuse of a minor, starting with the so-called innocent spanking, by jerking, beating, mutilation, and ending with depriving a child of life. The considerations have a broad social, psychological, philosophical and even medical context. The effects of physical violence experienced in childhood, reflecting on human life and health in an unconscious way - syndrome of a lacerated infant, as well as conscious - post-traumatic stress disorder or abused child syndrome are shown. A detailed analysis of legal solutions relating to physical abuse of children has been made. The paper also presents a broad spectrum of forms of psychological violence with numerous references to research conducted in the area of social sciences and pointed to the psychological, physical and somatic consequences of experiencing wrongs. For the considerations, the legal thread is important, in which normative solutions from various branches of law were analysed. An important part of the book is a section devoted to sexual violence against children, which belongs to the most hidden problems in the family. It is also the most harmful and socially stigmatized form of child abuse. It has been treated fairly widely due to the specificity and the fact that some of its varieties may extend beyond the family. The neglect of the child is a complement to the three main forms of violence. The analyses of "neglect" were made from various perspectives, ranging from providing help to parents who are not educated, by limiting and depriving them of power over a child, and ending with administering sanctions provided for by criminal law.
Analytical modeling of medium access control in finite-load and saturated wireless LANs
Creators: name: El Housseini, Samer
Publisher: name: University of British Columbia
Year: 2010

description: The IEEE 802.11 standard provides the specifications for a Wireless Local-Area Network (WLAN) technology, commonly known as Wi-Fi. IEEE 802.11 uses an Ethernet-like contention-window mechanism to resolve the multiple-access problem to the wireless channel. Essentially, a wireless station doubles its contention window size after detecting a frame collision. Although this method is effective in reducing collisions on the channel, it increases packet overhead which results in reducing the throughput. In general, the performance of the WLAN varies widely depending on the number of customers in the network coverage area and the shape of the traffic on the channel. A few analytical models have been proposed over the past few years to understand the behavior of WLANs. Although insightful, most of these models were based on a highly-simplified "saturated" networks model in which all wireless stations behave like traffic source with infinite number of frames to transmit. The saturation assumption is useful in that it leads to simple steady-state models with fixed transition probabilities. However, it is not realistic to assume that wireless stations are always attempting to transmit frames, in real networks. This thesis is concerned with the development of improved analytical models for nonsaturated, or finite-load, WLANs and also propose enhancements to existing saturation WLAN models. In particular, we have developed two analytical models for WLANs with finite load. One model for the standard IEEE 802.11 WLAN and the second for the quality-of-service enabled WLAN described by the IEEE 802.11e standard. The proposed models capture the probabilistic nature of wireless networks and the interdependencies among wireless stations. In our analysis, we rely on novel schemes that use coupled station-view and network-view models to compute the overall throughput, collision probability, and delay in a WLAN. When compared to other recent work, our results prove to be the most accurate. We complement our work on finite-load models by presenting a more accurate model for IEEE 802.11e WLANs operating under saturation, and propose a few adaptive contention-window algorithms for maximizing the frame transmission rate and consequently the saturation throughput. We show through simulation that the proposed algorithms increase the throughput by several multiples.
Novel required properties of, and efficient algorithms to seek, perfect cuboids
Creators: name: de Grey, Aubrey
name: Gibbs, Philip
name: Helm, Louie
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics
subject: 11D99

description: We present a novel approach to the age-old question of whether perfect cuboids exist. Our approach consists of two new computer search algorithms, arising from the analysis of "perfect plinths" reported by one of us recently, that are much more efficient than any prior algorithm of which we are aware. Using this approach, we also (i) identify some new two-parameter families of edge cuboids, and (ii) show that large proportions of aspect ratios of faces or internal rectangles cannot be present in a perfect cuboid, a property that was previously reported only for faces with the aspect ratio 4:3.
description: 25 pages, 3 figures
Liquid-liquid phase transition in Stillinger-Weber silicon
Creators: name: Beaucage, Philippe
name: Mousseau, Normand
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: It was recently demonstrated that the Stillinger-Weber silicon undergoes a liquid-liquid first-order phase transition deep into the supercooled region (Sastry and Angell, Nature Materials 2, 739 (2003)). Here we study the effects of perturbations on this phase transition. We show that the order of the liquid-liquid transition changes with negative pressure. We also find that the liquid-liquid transition disappears when the three-body term of the potential is strengthened by as little as 5 %. This implies that the details of the potential could affect strongly the nature and even the existence of the liquid-liquid phase.
description: 13 pages
Simulations of the radio polarization of a precessing pulsar PSR J1906+0746
Creators: name: Galishnikova, A. K.
name: Philippov, A. A.
name: Beskin, V. S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The recently constructed theory of radio wave propagation in the pulsar magnetosphere outlines the general aspects of the radio light curve and polarization formation. It allows us to describe general properties of mean profiles, such as the position angle ($PA$) of the linear polarization, and the circular polarization for the realistic structure of the pair creation region in the pulsar magnetosphere. In this work, we present an application of the radio wave propagation theory to the radio observations of pulsar PSR J1906+0746. This pulsar is particularly interesting because observations of relativistic spin-precession in a binary system allows us to put strong constraints on its geometry. Because it is an almost orthogonal rotator, the pulsar allows us to observe both magnetic poles; as we show, this is crucial for testing the theory of radio wave propagation and obtaining constraints on the parameters of magnetospheric plasma. Our results show that plasma parameters are qualitatively consistent with theories of pair plasma production in polar cap discharges. Specifically, for PSR J1906+0746, we constrain the plasma multiplicity $λ\sim 10^3$ and the Lorentz-factor of secondary plasma $γ\sim $ a few hundred.
description: 9 pages, 4 figures. Published in MNRAS
ALMA chemical survey of disk-outflow sources in Taurus (ALMA-DOT) II: Vertical stratification of CO, CS, CN, H$_2$CO, and CH$_3$OH in a Class I disk
Creators: name: Podio, L.
name: Garufi, A.
name: Codella, C.
name: Fedele, D.
name: Bianchi, E.
name: Bacciotti, F.
name: Ceccarelli, C.
name: Favre, C.
name: Mercimek, S.
name: Rygl, K.
name: Testi, L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The chemical composition of planets is inherited from that of the protoplanetary disk at the time of planet formation. Increasing observational evidence suggests that planet formation occurs in less than 1 Myr. This motivates the need for spatially resolved spectral observations of Class I disks, as carried out by the ALMA chemical survey of Disk-Outflow sources in Taurus (ALMA-DOT). In the context of ALMA-DOT, we observe the edge-on disk around the Class I source IRAS 04302+2247 (the butterfly star) in the 1.3mm continuum and five molecular lines. We report the first tentative detection of methanol (CH$_3$OH) in a Class I disk and resolve, for the first time, the vertical structure of a disk with multiple molecular tracers. The bulk of the emission in the CO 2-1, CS 5-4, and o-H$_2$CO 3(1,2)-2(1,1) lines originates from the warm molecular layer, with the line intensity peaking at increasing disk heights, $z$, for increasing radial distances, $r$. Molecular emission is vertically stratified, with CO observed at larger disk heights (aperture $z/r\sim0.41-0.45$) compared to both CS and H$_2$CO, which are nearly cospatial ($z/r\sim0.21-0.28$). In the outer midplane, the line emission decreases due to molecular freeze-out onto dust grains (freeze-out layer) by a factor of >100 (CO) and 15 (CS). The H$_2$CO emission decreases by a factor of only about 2, which is possibly due to H$_2$CO formation on icy grains, followed by a nonthermal release into the gas phase. The inferred [CH$_3$OH]/[H$_2$CO] abundance ratio is 0.5-0.6, which is 1-2 orders of magnitude lower than for Class 0 hot corinos, and a factor ~2.5 lower than the only other value inferred for a protoplanetary disk (in TW Hya, 1.3-1.7). Additionally, it is at the lower edge but still consistent with the values in comets. This may indicate that some chemical reprocessing occurs in disks before the formation of planets and comets.
description: 8 pages, 4 figures, accepted for publication as a letter on A&A
Deep Learning Based Cyberbullying Detection in Bangla Language
Creators: name: Nath, Sristy Shidul
name: Karim, Razuan
name: Miraz, Mahdi H.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: The Internet is currently the largest platform for global communication including expressions of opinions, reviews, contents, images, videos and so forth. Moreover, social media has now become a very broad and highly engaging platform due to its immense popularity and swift adoption trend. Increased social networking, however, also has detrimental impacts on the society leading to a range of unwanted phenomena, such as online assault, intimidation, digital bullying, criminality and trolling. Hence, cyberbullying has become a pervasive and worrying problem that poses considerable psychological and emotional harm to the people, particularly amongst the teens and the young adults. In order to lessen its negative effects and provide victims with prompt support, a great deal of research to identify cyberbullying instances at various online platforms is emerging. In comparison to other languages, Bangla (also known as Bengali) has fewer research studies in this domain. This study demonstrates a deep learning strategy for identifying cyberbullying in Bengali, using a dataset of 12282 versatile comments from multiple social media sites. In this study, a two-layer bidirectional long short-term memory (Bi-LSTM) model has been built to identify cyberbullying, using a variety of optimisers as well as 5-fold cross validation. To evaluate the functionality and efficacy of the proposed system, rigorous assessment and validation procedures have been employed throughout the project. The results of this study reveals that the proposed model's accuracy, using momentum-based stochastic gradient descent (SGD) optimiser, is 94.46%. It also reflects a higher accuracy of 95.08% and a F1 score of 95.23% using Adam optimiser as well as a better accuracy of 94.31% in 5-fold cross validation.
Bayesian Neural Networks for Uncertainty Estimation of Imaging Biomarkers
Creators: name: Senapati, J.
name: Roy, A. Guha
name: Pölsterl, S.
name: Gutmann, D.
name: Gatidis, S.
name: Schlett, C.
name: Peters, A.
name: Bamberg, F.
name: Wachinger, C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Image segmentation enables to extract quantitative measures from scans that can serve as imaging biomarkers for diseases. However, segmentation quality can vary substantially across scans, and therefore yield unfaithful estimates in the follow-up statistical analysis of biomarkers. The core problem is that segmentation and biomarker analysis are performed independently. We propose to propagate segmentation uncertainty to the statistical analysis to account for variations in segmentation confidence. To this end, we evaluate four Bayesian neural networks to sample from the posterior distribution and estimate the uncertainty. We then assign confidence measures to the biomarker and propose statistical models for its integration in group analysis and disease classification. Our results for segmenting the liver in patients with diabetes mellitus clearly demonstrate the improvement of integrating biomarker uncertainty in the statistical inference.
description: MICCAI-MLMI 2020 Workshop Paper (Accepted)
Reactor Measurement of theta_12; Principles, Accuracies and Physics Potentials
Creators: name: Minakata, H.
name: Nunokawa, H.
name: Teves, W. J. C.
name: Funchal, R. Zukanovich
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We discuss reactor measurement of θ_{12} which has a potential of reaching the ultimate sensitivity which surpasses all the methods so far proposed. The key is to place a detector at an appropriate baseline distance from the reactor neutrino source to have an oscillation maximum at around a peak energy of the event spectrum in the absence of oscillation. By a detailed statistical analysis the optimal distance is estimated to be \simeq (50-70) km x [8 x 10^{-5} eV^2/Δm^2_{21}], which is determined by maximizing the oscillation effect in the event number distribution and minimizing geo-neutrino background contamination. To estimate possible uncertainty caused by surrounding nuclear reactors in distance of \sim 100 km, we examine a concrete example of a detector located at Mt. Komagatake, 54 km away from the Kashiwazaki-Kariwa nuclear power plant in Japan, the most powerful reactor complex in the world. The effect turns out to be small. Under a reasonable assumption of systematic error of 4% in the experiment, we find that sin^2{θ_{12}} can be determined to the accuracy of \simeq 2% (\simeq 3%), at 68.27% CL for 1 degree of freedom, for 60 GW_th kton yr (20 GW_th kton yr) operation. We also discuss implications of such an accurate measurement of θ_{12}.
description: 31 pages, 8 figures. version to appear in PRD
Particle Acceleration, Magnetic Field Generation, and Emission in Relativistic Shocks
Creators: name: Nishikawa, K. -I.
name: Hardee, P.
name: Hededal, C. B.
name: Richardson, G.
name: Preece, R.
name: Sol, H.
name: Fishman, G. J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Shock acceleration is an ubiquitous phenomenon in astrophysical plasmas. Plasma waves and their associated instabilities (e.g., Buneman, Weibel and other two-stream instabilities) created in collisionless shocks are responsible for particle (electron, positron, and ion) acceleration. Using a 3-D relativistic electromagnetic particle (REMP) code, we have investigated particle acceleration associated with a relativistic jet front propagating into an ambient plasma. We find small differences in the results for no ambient and modest ambient magnetic fields. Simulations show that the Weibel instability created in the collisionless shock front accelerates jet and ambient particles both perpendicular and parallel to the jet propagation direction. The small scale magnetic field structure generated by the Weibel instability is appropriate to the generation of ``jitter'' radiation from deflected electrons (positrons) as opposed to synchrotron radiation. The jitter radiation resulting from small scale magnetic field structures may be important for understanding the complex time structure and spectral evolution observed in gamma-ray bursts or other astrophysical sources containing relativistic jets and relativistic collisionless shocks.
description: 6 pages, 1 figure, revised and accepted for Advances in Space Research (35th COSPAR Scientific Assembly, Paris, 18-25 July 2004)
Quantum Gravity at Astrophysical Distances?
Creators: name: Reuter, M.
name: Weyer, H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Assuming that Quantum Einstein Gravity (QEG) is the correct theory of gravity on all length scales we use analytical results from nonperturbative renormalization group (RG) equations as well as experimental input in order to characterize the special RG trajectory of QEG which is realized in Nature and to determine its parameters. On this trajectory, we identify a regime of scales where gravitational physics is well described by classical General Relativity. Strong renormalization effects occur at both larger and smaller momentum scales. The latter lead to a growth of Newton's constant at large distances. We argue that this effect becomes visible at the scale of galaxies and could provide a solution to the astrophysical missing mass problem which does not require any dark matter. We show that an extremely weak power law running of Newton's constant leads to flat galaxy rotation curves similar to those observed in Nature. Furthermore, a possible resolution of the cosmological constant problem is proposed by noting that all RG trajectories admitting a long classical regime automatically give rise to a small cosmological constant.
description: 46 pages, 4 figures, to appear in JCAP
In-situ evaluation of hole quality and cutting tool condition in robotic drilling of composite materials using machine learning
Creators: name: Lee, Stephen
name: Mongan, Patrick
name: FARHADI, AHMAD
name: Hinchy, Eoin
name: O'Dowd, Noel
name: Mc Carthy, Conor
Publisher: name: University of Limerick
Year: 2025
Subjects: classificationCode: 40
subject: Engineering

description: The massive adoption of industrial robots in the manufacturing sector has significantly increased automation of installation and inspection procedures, particularly benefiting the aerospace industry, where large volumes of holes are drilled in each aircraft. However, mechanical drilling remains challenging when dealing with composite materials due to their inherently heterogeneous structure. This work presents a novel approach for in-situ hole quality inspection utilising integrated sensor data of an industrial robotic drill, combined with a machine learning model. Additionally, a novel classification approach for evaluating hole quality is proposed. This study employed a KUKA industrial robot, fitted with a multifunctional end-effector, to drill holes in a composite material used in aerospace applications. An ensemble neural network (ENN) model, which combines an artificial neural network with a genetic algorithm, was used to assess the quality of these drilled holes. The model was specifically developed and tested on the machined holes to relate process input parameters and drilling torques to hole quality. The model predictions were validated with six unseen datasets, of which five were predicted accurately. A full factorial study of the process parameters was conducted using analysis of variance (ANOVA) to investigate the relationship between tool condition and drilling torque. The results of the ANOVA show that tool condition is the largest contributor to drilling torque. The method proposed in this work, which allows real-time monitoring of hole quality, has the potential to improve manufacturing productivity of drilled components while ensuring high-quality end products.
Predictions and recent results in susy on the lattice
Creators: name: Feo, Alessandra
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this brief review, I summarize the current theoretical knowledge in supersymmetry on the lattice, with special emphasis on recent results in the framework of N=1 supersymmetric Yang Mills theory, Wess-Zumino model and Yang-Mills theory with extended supersymmetries.
description: 15 pages. Invited brief review for Modern Physics Letters A. Minor changes
Band power modulation through intracranial EEG stimulation and its cross-session consistency
Creators: name: Papasavvas, Christoforos A
name: Schroeder, Gabrielle M
name: Diehl, Beate
name: Baier, Gerold
name: Taylor, Peter N
name: Wang, Yujiang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: Background: Direct electrical stimulation of the brain through intracranial electrodes is currently used to probe the epileptic brain as part of pre-surgical evaluation, and it is also being considered for therapeutic treatments through neuromodulation. It is still unknown, however, how consistent intracranial direct electrical stimulation responses are across sessions, to allow effective neuromodulation design. Objective: To investigate the cross-session consistency of the electrophysiological effect of electrical stimulation delivered through intracranial EEG. Methods: We analysed data from 79 epilepsy patients implanted with intracranial EEG who underwent brain stimulation as part of a memory experiment. We quantified the effect of stimulation in terms of band power modulation and compared this effect from session to session. As a reference, we applied the same measures during baseline periods. Results: In most sessions, the effect of stimulation on band power could not be distinguished from baseline fluctuations of band power. Stimulation effect was also not consistent across sessions; only a third of the session pairs had a higher consistency than the baseline standards. Cross-session consistency is mainly associated with the strength of positive stimulation effects, and it also tends to be higher when the baseline conditions are more similar between sessions. Conclusion: These findings can inform our practices for designing neuromodulation with greater efficacy when using direct electrical brain stimulation as a therapeutic treatment.
Additional file 6 of Acquired resistance to DZNep-mediated apoptosis is associated with copy number gains of AHCY in a B-cell lymphoma model
Creators: name: Chidimma Agatha Akpa
name: Kleo, Karsten
name: Oker, Elisabeth
name: Tomaszewski, Nancy
name: Messerschmidt, Clemens
name: López, Cristina
name: Wagener, Rabea
name: Oehl-Huber, Kathrin
name: Dettmer, Katja
name: Schoeler, Anne
name: Lenze, Dido
name: Oefner, Peter J.
name: Beule, Dieter
name: Siebert, Reiner
name: Capper, David
name: Dimitrova, Lora
name: Hummel, Michael
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 6: Figure S5. Full-length blot for Western blot image presented in Fig. 1.
Transformaciones del consumo alimentario ya su repercusion en el sistema agroalimentario
Creators: name: Mili, Samir
name: Mili, Samir
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agricultural and Food Policy
subject: Food Consumption/Nutrition/Food Safety
subject: Institutional and Behavioral Economics
subject: consumo alimentario
subject: comportamiento del consumidor
subject: cambio estructural
subject: sistema agroalimentario
subject: food consumption
subject: consumer behavior
subject: structural change
subject: agri-food system.

description: Este trabajo explora las transformaciones contemporaneas del consumo alimentario en los paises desarrollados y su repercusion en el sistema agroalimentario, con particular mencion al caso espanol. Tras un breve examen de la evolucion reciente del consumo alimentario en terminos de magnitdues cuantitatives y de tendencias cualitatives emergentes, la parte principal del trabajo se centre, primeramente, en analizer los cambios en el comportamiento del consumidor que han estado tras dicha evolucion, destacando de modo especial los fenomenos de cambio estructural en los modelos de demanda convencionales, los enforques technicos de abordarlos, asi como la consiguiente necesidad de nuevos paradigmas analiticos. Subsiguientemente, se exploran una serie de implicaciones de las nuevas pautas de consumo en la reorgenacion del sistema agroalimentario, con particular enfasis en las reorientaciones estrategicas y organizativas de las distintas fases del mismo... This paper explores contemporary changes in food consumption in advanced societies as well as their implications for the agri-food system, with special reference to the Spanish case. After a brief discussion of the recent evolution of food consumption in terms of quantitative magnitudes and emergent qualitative trends, the central part of the work focuses, firstly, on analysing the changes in consumer behaviour behind that evolution, putting special emphasis on structural change issues arisen in empirical demand studies, the technical approaches to investigate them, as well as the correlate need for new analytical paradigms. Secondly, we explore some implications of the new consumption patterns in redesigning the agri-food system, stressing on the strategic and organisational reorientations of its different stages.
Calibrating Photometric Redshifts of Luminous Red Galaxies
Creators: name: Padmanabhan, Nikhil
name: Budavari, Tamas
name: Schlegel, David J.
name: Bridges, Terry
name: Brinkmann, Jonathan
name: Cannon, Russell
name: Connolly, Andrew J.
name: Croom, Scott M.
name: Csabai, Istvan
name: Drinkwater, Michael
name: Eisenstein, Daniel J.
name: Hewett, Paul C.
name: Loveday, Jon
name: Nichol, Robert C.
name: Pimbblet, Kevin A.
name: De Propris, Roberto
name: Schneider, Donald P.
name: Scranton, Ryan
name: Seljak, Uros
name: Shanks, Tom
name: Szapudi, Istvan
name: Szalay, Alexander S.
name: Wake, David
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss the construction of a photometric redshift catalogue of Luminous Red Galaxies (LRGs) from the Sloan Digital Sky Survey (SDSS), emphasizing the principal steps necessary for constructing such a catalogue -- (i) photometrically selecting the sample, (ii) measuring photometric redshifts and their error distributions, (iii) and estimating the true redshift distribution. We compare two photometric redshift algorithms for these data and find that they give comparable results. Calibrating against the SDSS and SDSS-2dF spectroscopic surveys, we find that the photometric redshift accuracy is $σ\sim 0.03$ for redshifts less than 0.55 and worsens at higher redshift ($\sim 0.06$). These errors are caused by photometric scatter, as well as systematic errors in the templates, filter curves, and photometric zeropoints. We also parametrize the photometric redshift error distribution with a sum of Gaussians, and use this model to deconvolve the errors from the measured photometric redshift distribution to estimate the true redshift distribution. We pay special attention to the stability of this deconvolution, regularizing the method with a prior on the smoothness of the true redshift distribution. The methods we develop are applicable to general photometric redshift surveys.
description: 15 pages, 12 figs, matches version accepted by MNRAS
title: Exploring Quantity, Quality, Content, and Impact of Sexual Orientation and Gender Identity Publications in School Psychology: A PRISMA Scoping Review
Creators: name: Gardy, Sarah
name: Chenneville, Tiffany
name: Wasilewski, Serena
name: Jazi, Elham Azamian
name: Pyle, James
name: Stanz, Joshua
Publisher: name: OSF Registries
Year: 2025
Subjects: subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: Using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR), we conducted a scoping review of six of the most influential school psychology journals from the year of the first publication issue to the end of 2020 to identify the quantity, quality, content, and impact of empirical and conceptual articles published on LGBTQ+ topics.
Additional file 2 of Impact of a change of bronchodilator medications in a hospital drug formulary on intra- and out-of-hospital drug prescriptions: interrupted time series design with comparison group
Creators: name: Vázquez-Mourelle, Raquel
name: Carracedo-Martínez, Eduardo
name: Figueiras, Adolfo
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Pharmacology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 60506 Virology
subject: Computational Biology

description: Additional file 2: Table S2. Number of measurements, minimum, maximum, mean and standard deviation pre- and post-intervention in the intervention and control group.