cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Homology of even Artin kernels
Creators: name: Blasco-García, Rubén
name: Cogolludo-Agustín, José Ignacio
name: Martínez-Pérez, Conchita
Publisher: name: arXiv
Year: 2021
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: We explicitly compute the homology groups with coefficients in a field of characteristic zero of cocyclic subgroups or even Artin groups of FC-type. We also give some partial results in the case when the coefficients are taken in a field of prime characteristic.
description: 18 pages, 2 figures. To appear in AGT
Graph Self-Supervised Learning: A Survey
Creators: name: Liu, Yixin
name: Jin, Ming
name: Pan, Shirui
name: Zhou, Chuan
name: Zheng, Yu
name: Xia, Feng
name: Yu, Philip S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Deep learning on graphs has attracted significant interests recently. However, most of the works have focused on (semi-) supervised learning, resulting in shortcomings including heavy label reliance, poor generalization, and weak robustness. To address these issues, self-supervised learning (SSL), which extracts informative knowledge through well-designed pretext tasks without relying on manual labels, has become a promising and trending learning paradigm for graph data. Different from SSL on other domains like computer vision and natural language processing, SSL on graphs has an exclusive background, design ideas, and taxonomies. Under the umbrella of graph self-supervised learning, we present a timely and comprehensive review of the existing approaches which employ SSL techniques for graph data. We construct a unified framework that mathematically formalizes the paradigm of graph SSL. According to the objectives of pretext tasks, we divide these approaches into four categories: generation-based, auxiliary property-based, contrast-based, and hybrid approaches. We further describe the applications of graph SSL across various research fields and summarize the commonly used datasets, evaluation benchmark, performance comparison and open-source codes of graph SSL. Finally, we discuss the remaining challenges and potential future directions in this research field.
description: 26 pages, 9 figures, 9 tables
On Channel Reciprocity in Reconfigurable Intelligent Surface Assisted Wireless Network
Creators: name: Tang, Wankai
name: Chen, Xiangyu
name: Chen, Ming Zheng
name: Dai, Jun Yan
name: Han, Yu
name: Jin, Shi
name: Cheng, Qiang
name: Li, Geoffrey Ye
name: Cui, Tie Jun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Channel reciprocity greatly facilitates downlink precoding in time-division duplexing (TDD) multiple-input multiple-output (MIMO) communications without the need for channel state information (CSI) feedback. Recently, reconfigurable intelligent surfaces (RISs) emerge as a promising technology to enhance the performance of future wireless networks. However, since the artificial electromagnetic characteristics of RISs do not strictly follow the normal laws of nature, it brings up a question: does the channel reciprocity hold in RIS-assisted TDD wireless networks? After briefly reviewing the reciprocity theorem, in this article, we show that there still exists channel reciprocity for RIS-assisted wireless networks satisfying certain conditions. We also experimentally demonstrate the reciprocity at the sub-6 GHz and the millimeter-wave frequency bands by using two fabricated RISs. Furthermore, we introduce several RIS-assisted approaches to realizing nonreciprocal channels. Finally, potential opportunities brought by reciprocal/nonreciprocal RISs and future research directions are outlined.
description: In general, when the control signals applied to the unit cells remain unchanged, commonly designed and fabricated RISs inherently obey the reciprocity theorem. Nevertheless, there are several RIS-assisted approaches to realizing nonreciprocal channels. Potential opportunities brought by reciprocal/nonreciprocal RISs and future research directions are outlined
Pixel-wise Distance Regression for Glacier Calving Front Detection and Segmentation
Creators: name: Davari, Amirabbas
name: Baller, Christoph
name: Seehaus, Thorsten
name: Braun, Matthias
name: Maier, Andreas
name: Christlein, Vincent
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Glacier calving front position (CFP) is an important glaciological variable. Traditionally, delineating the CFPs has been carried out manually, which was subjective, tedious and expensive. Automating this process is crucial for continuously monitoring the evolution and status of glaciers. Recently, deep learning approaches have been investigated for this application. However, the current methods get challenged by a severe class-imbalance problem. In this work, we propose to mitigate the class-imbalance between the calving front class and the non-calving front class by reformulating the segmentation problem into a pixel-wise regression task. A Convolutional Neural Network gets optimized to predict the distance values to the glacier front for each pixel in the image. The resulting distance map localizes the CFP and is further post-processed to extract the calving front line. We propose three post-processing methods, one method based on statistical thresholding, a second method based on conditional random fields (CRF), and finally the use of a second U-Net. The experimental results confirm that our approach significantly outperforms the state-of-the-art methods and produces accurate delineation. The Second U-Net obtains the best performance results, resulting in an average improvement of about 21% dice coefficient enhancement.
Injuries and helmet use related to non-motorized wheeled activities among pediatric patients
Creators: name: Lindsay, H.
name: Brussoni, Mariana
name: Lindsay, H.
Publisher: name: Public Health Agency of Canada
Year: 2021

description: Introduction: Patients presenting to emergency departments (ED) for injuries resulting from recreational activities represent a unique source of information on important directions for injury prevention efforts. We describe the epidemiology of non-motorized wheeled activity-related injury in pediatric patients presenting to Canadian EDs as well as patients' helmet use. Results: Most of the 28 618 children aged 1 to 16 years injured during non-motorized wheeled activities were injured while cycling, followed by skateboarding. Most injuries occurred among boys. Children injured on scooters tended to be younger whereas skateboarders were the oldest. On average, the number of all injuries decreased by 6% over the time period. Falls were the most common mechanism of injury; 8.3% of patients had head injuries, which were seen more often among cyclists than other wheeled-activity users. Helmet use was greatest among cyclists (62.2%) and lowest among skateboarders (32.9%). Injured patients presenting to EDs in jurisdictions with legislation mandating helmet use had 2.12 greater odds of helmet use and 0.86 lesser odds of head injury compared with those presenting in jurisdictions without helmet laws. Conclusion: These results provide further evidence that legislation mandating helmet use may be an effective way of reducing injury among all wheeled-activity users.
Search for a viable nucleus-nucleus potential for heavy-ion nuclear reactions
Creators: name: Nandi, T.
name: Swami, D. K.
name: Gupta, P. S. Damodara
name: Kumar, Yash
name: Chakraborty, S.
name: Manjunatha, H. C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We have constructed an empirical formulae for the fusion and interaction barriers using experimental values available till date. The fusion barriers so obtained have been compared with different model predictions based on the proximity, Woods-Saxon and double folding potentials along with several empirical formulas, time dependent Hartree-Fock theories, and the experimental results. The comparison allows us to find the best model, which is nothing but the present empirical formula only. Most remarkably, the fusion barrier and radius show excellent consonance with the experimental findings for the reactions meant for synthesis of the superheavy elements also. Furthermore, it is seen that substitution of the predicted fusion barrier and radius in classic Wong formula [C. Wong, Phys. Rev. Lett. {31}, 766 (1973)] for the total fusion cross sections satisfies very well with the experiments. Similarly, current interaction barrier predictions have also been compared well with a few experimental results available and Bass potential model meant for the interaction barrier predictions. Importantly, the present formulae for the fusion as well as interaction barrier will have practical implications in carrying out the physics research near the Coulomb barrier energies. Furthermore, present fusion barrier and radius provide us a good nucleus-nucleus potential useful for numerous theoretical applications.
description: 4 figures. arXiv admin note: substantial text overlap with arXiv:1901.03515
The Polish Catholic Church and the Regulation of IVF in Poland: Polarised Political Discourses and the Battle over ‘Proper’ Reproduction
Creators: name: Gozdecka, Dorota Anna
Publisher: name: feminists@law
Year: 2012

description: This article illustrates the legislative battle for the regulation of IVF in Poland between the years 2007-2011. It examines the proposed drafts and focuses on the influence of the Catholic Church on those drafts. It also scrutinises the impact of this influence on gender stereotypes as well as the exclusion of religious “others”. When the law becomes strongly influenced by traditional religion whose values are identified with national values, many otherised groups become erased from the legislative equation: infertile couples, non-Catholics, single and lesbian women, as well as dissenting voices within the Church. While IVF is criticised, the ground for this criticism is far from the feminist concern for women and freeing them from the social expectations of motherhood.
description: feminists@law, Vol 2 No 1 (2012)
Reducing polypharmacy : A logical approach
Creators: name: Therapeutics Initiative (University Of British Columbia)
Publisher: name: The University of British Columbia
Year: 2023

description: Therapeutics Letter 90 describes seven steps that doctors, pharmacists, nurses, patients and their families can employ to become adept at deprescribing. Rational prescribing requires restraint and wisdom in initiating chronic drug therapy, but also fundamental change in our philosophy of medicinal care. Complex medication regimes should be challenged routinely, and simplification welcomed when it can improve health.
Illusions of Post-Feminism, Ghosts of Gender and the Discourses of Law
Creators: name: McNeilly, Kathryn
Publisher: name: feminists@law
Year: 2012

description: This article seeks to consider evidence of post-feminist and "post-equality" gender narratives contained in the discourses of law in the UK and European contexts. Analysis of perennial ghosts of gender in the areas of gender-neutrality in policy, legislative regulation of sexual crimes, and the adjudication of gendered issues by judges will be undertaken in order to renew and reinstate the focus of the legal feminist project and advocate for continued scrutiny in these three practical areas.
description: feminists@law, Vol 1 No 2 (2011)
Maximal entanglement increase with single-photon subtraction
Creators: name: Zhang, Kun
name: Jing, Jietai
name: Treps, Nicolas
name: Walschaers, Mattia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Entanglement is an indispensable quantum resource for quantum information technology. In continuous-variable quantum optics, photon subtraction can increase the entanglement between Gaussian states of light, but for mixed states the extent of this entanglement increase is poorly understood. In this work, we use an entanglement measure based the Rényi-2 entropy to prove that single-photon subtraction increases bipartite entanglement by no more than log 2. This value coincides with the maximal amount of bipartite entanglement that can be achieved with one photon. The upper bound is valid for all Gaussian input states, regardless of the number of modes and the purity.
Local Well-Posedness for the Zakharov System in Dimension $d\leqslant 3$
Creators: name: Sanwal, Akansha
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: The Zakharov system in dimension $d\leqslant 3$ is shown to be locally well-posed in Sobolev spaces $H^s \times H^l$, extending the previously known result. We construct new solution spaces by modifying the $X^{s,b}$ spaces, specifically by introducing temporal weights. We use contraction mapping principle to prove local well-posedness in the same. The result obtained is sharp up to endpoints.
description: 26 pages, 2 figures
Immaterial labour and alternative valorisation processes in Italian feminist debates: (re)exploring the ‘commons’ of re-production.
Creators: name: Alessandrini, Donatella
Publisher: name: feminists@law
Year: 2012

description: This article takes its cue from Desai’s critique of the new communists of the commons, particularly her claim that their project is built upon a series of misunderstandings about the dynamics of capital accumulation, the production of value in post-Fordism and the concept of the ‘commons’ itself. Focusing on earlier explorations by Italian feminists of the dynamic interaction between labour and value, the contribution this article makes to the commons debate is three-fold: first, it argues that the most interesting insights emerging from immaterial/cognitive/affective labour theories on which Italian post-workerists rely to put forward a renewed understanding of the commons derive from this feminist body of work. Secondly it shows how, despite being relied upon, the radical potential of this work has been limited by positing a qualitative shift to post-Fordist production that pays little attention to the important connections between labour and value that make up our common world. Finally, the article focuses exactly on this potential, that is, the challenge to capitalist value through the instantiation of other processes of valorisation, in light of the current attack on social reproduction.
description: feminists@law, Vol 1 No 2 (2011)
DCT and DST Filtering with Sparse Graph Operators
Creators: name: Lu, Keng-Shih
name: Ortega, Antonio
name: Mukherjee, Debargha
name: Chen, Yue
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Graph filtering is a fundamental tool in graph signal processing. Polynomial graph filters (PGFs), defined as polynomials of a fundamental graph operator, can be implemented in the vertex domain, and usually have a lower complexity than frequency domain filter implementations. In this paper, we focus on the design of filters for graphs with graph Fourier transform (GFT) corresponding to a discrete trigonometric transform (DTT), i.e., one of 8 types of discrete cosine transforms (DCT) and 8 discrete sine transforms (DST). In this case, we show that multiple sparse graph operators can be identified, which allows us to propose a generalization of PGF design: multivariate polynomial graph filter (MPGF). First, for the widely used DCT-II (type-2 DCT), we characterize a set of sparse graph operators that share the DCT-II matrix as their common eigenvector matrix. This set contains the well-known connected line graph. These sparse operators can be viewed as graph filters operating in the DCT domain, which allows us to approximate any DCT graph filter by a MPGF, leading to a design with more degrees of freedom than the conventional PGF approach. Then, we extend those results to all of the 16 DTTs as well as their 2D versions, and show how their associated sets of multiple graph operators can be determined. We demonstrate experimentally that ideal low-pass and exponential DCT/DST filters can be approximated with higher accuracy with similar runtime complexity. Finally, we apply our method to transform-type selection in a video codec, AV1, where we demonstrate significant encoding time savings, with a negligible compression loss.
description: 16 pages, 11 figures, 5 tables
Mechanical strains induced in osteoblasts by use of point femtosecond laser targeting
Creators: name: Cranfield, Charles
name: Bomzon, Ze'ev
name: Day, Daniel
name: Gu, Min
name: Cartmell, Sarah
Publisher: name: Swinburne
Year: 2024

description: A study demonstrating how ultrafast laser radiation stimulates osteoblasts is presented. The study employed a custom made optical system that allowed for simultaneous confocal cell imaging and targeted femtosecond pulse laser irradiation. When femtosecond laser light was focused onto a single cell, a rise in intracellular Ca 2+ levels was observed followed by contraction of the targeted cell. This contraction caused deformation of neighbouring cells leading to a heterogeneous strain field throughout the monolayer. Quantification of the strain fields in the monolayer using digital image correlation revealed local strains much higher than threshold values typically reported to stimulate extracellular bone matrix production in vitro. This use of point targeting with femtosecond pulse lasers could provide a new method for stimulating cell activity in orthopaedic tissue engineering.
InversionNet3D: Efficient and Scalable Learning for 3D Full Waveform Inversion
Creators: name: Zeng, Qili
name: Feng, Shihang
name: Wohlberg, Brendt
name: Lin, Youzuo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: Geophysics (physics.geo-ph)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: Seismic full-waveform inversion (FWI) techniques aim to find a high-resolution subsurface geophysical model provided with waveform data. Some recent effort in data-driven FWI has shown some encouraging results in obtaining 2D velocity maps. However, due to high computational complexity and large memory consumption, the reconstruction of 3D high-resolution velocity maps via deep networks is still a great challenge. In this paper, we present InversionNet3D, an efficient and scalable encoder-decoder network for 3D FWI. The proposed method employs group convolution in the encoder to establish an effective hierarchy for learning information from multiple sources while cutting down unnecessary parameters and operations at the same time. The introduction of invertible layers further reduces the memory consumption of intermediate features during training and thus enables the development of deeper networks with more layers and higher capacity as required by different application scenarios. Experiments on the 3D Kimberlina dataset demonstrate that InversionNet3D achieves state-of-the-art reconstruction performance with lower computational cost and lower memory footprint compared to the baseline.
title: Pupil Insights into School Bullying: A Cross-National Perspective between England and Japan
Creators: name: Kanetsuna, Tomoyuki
Publisher: name: Goldsmiths, University of London
Year: 2004

description: The research presented in this thesis focused on cross-national comparisons of secondary school pupils' understanding of and attitudes towards school bullying / ijime. In the first study, interviews with 121 12-15-year-old Japanese and English secondary school children were conducted to evaluate the depth and diversity of children's understanding of the nature of bullying / ijime. Attitudes towards bullying / ijime, and to school-based interventions were also examined. In the second study, a survey of 1,967 Japanese and English secondary school children was conducted to evaluate their understanding of different forms of bullying / ijime behaviour, and their friendship formations. The interviews revealed that compared to bullying in U.K, ijime in Japan was seen as more weighted towards verbal and indirect (rather than physical) aggression, that causes victims more often psychological suffering, and is more characteristic of within-grade relationships rather than an older pupil bullying a younger one. As useful coping strategies for the victim, while English pupils consider indirect actions such as 'seeking help from others' to be very useful, more direct actions such as 'fighting back' and 'telling bullies to stop it' are considered more useful by Japanese pupils. The majority of pupils in England had very positive views of school based intervention and teachers' and parents' involvement to tackle the problem, whereas considerable number of pupils in Japan had reluctant and negative attitudes to it. The survey revealed findings consistent with the first study regarding pupils' understanding of bullying / ijime behaviour. It also found that compared to English pupils, who form their friendships equally with pupils in different year groups as well as those in the same year group, Japanese pupils form friendships based, to a large extent, on the class they belong to. This difference of friendship formation seems partly to stem from the different education systems in England and Japan, which in tum, influence pupil's perceptions and understanding of the nature of bullying / ijime.
Acceleration-induced effects in stimulated light-matter interactions
Creators: name: Šoda, Barbara
name: Sudhir, Vivishek
name: Kempf, Achim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The interaction between light and an atom proceeds via three paradigmatic mechanisms: spontaneous emission, stimulated emission, and absorption. All three are resonant processes in the sense that they require that the radiation field be resonant with the atomic transition. The non-resonant counterparts of these effects, while necessary to maintain locality of the interaction in principle, are usually negligible because their effects tend to average out over multiple cycles of the radiation field. This state of affairs does not hold if the atom is accelerated. We show that, when accelerated, the non-resonant effects can be made to dominate over the conventional resonant effects. In fact we show that the non-resonant effects can be vastly enhanced by stimulation, and that suitably chosen acceleration can entirely suppress the resonant effects. In the class of effects that we study, the Unruh effect is the special case of vanishing stimulation.
Symbol-Level Precoding Through the Lens of Zero Forcing and Vector Perturbation
Creators: name: Liu, Yatao
name: Shao, Mingjie
name: Ma, Wing-Kin
name: Li, Qiang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: Information Theory (cs.IT)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Symbol-level precoding (SLP) has recently emerged as a new paradigm for physical-layer transmit precoding in multiuser multi-input-multi-output (MIMO) channels. It exploits the underlying symbol constellation structure, which the conventional paradigm of linear precoding does not, to enhance symbol-level performance such as symbol error probability (SEP). It also allows the precoder to take a more general form than linear precoding. This paper aims to better understand the relationships between SLP and linear precoding, subsequent design implications, and further connections beyond the existing SLP scope. Focused on the quadrature amplitude modulation (QAM) constellations, our study is built on a basic signal observation, namely, that SLP can be equivalently represented by a zero-forcing (ZF) linear precoding scheme augmented with some appropriately chosen symbol-dependent perturbation terms, and that some extended form of SLP is equivalent to a vector perturbation (VP) nonlinear precoding scheme augmented with the above-noted perturbation terms. We examine how insights arising from this perturbed ZF and VP interpretations can be leveraged to i) substantially simplify the optimization of certain SLP design criteria, namely, total or peak power minimization subject to SEP quality guarantees; and ii) draw connections with some existing SLP designs. We also touch on the analysis side by showing that, under the total power minimization criterion, the basic ZF scheme is a near-optimal SLP scheme when the QAM order is very high -- which gives a vital implication that SLP is more useful for lower-order QAM cases. Numerical results further indicate the merits and limitations of the different SLP designs derived from the perturbed ZF and VP interpretations.
Embedded Self-Distillation in Compact Multi-Branch Ensemble Network for Remote Sensing Scene Classification
Creators: name: Zhao, Qi
name: Ma, Yujing
name: Lyu, Shuchang
name: Chen, Lijiang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Remote sensing (RS) image scene classification task faces many challenges due to the interference from different characteristics of different geographical elements. To solve this problem, we propose a multi-branch ensemble network to enhance the feature representation ability by fusing features in final output logits and intermediate feature maps. However, simply adding branches will increase the complexity of models and decline the inference efficiency. On this issue, we embed self-distillation (SD) method to transfer knowledge from ensemble network to main-branch in it. Through optimizing with SD, main-branch will have close performance as ensemble network. During inference, we can cut other branches to simplify the whole model. In this paper, we first design compact multi-branch ensemble network, which can be trained in an end-to-end manner. Then, we insert SD method on output logits and feature maps. Compared to previous methods, our proposed architecture (ESD-MBENet) performs strongly on classification accuracy with compact design. Extensive experiments are applied on three benchmark RS datasets AID, NWPU-RESISC45 and UC-Merced with three classic baseline models, VGG16, ResNet50 and DenseNet121. Results prove that our proposed ESD-MBENet can achieve better accuracy than previous state-of-the-art (SOTA) complex models. Moreover, abundant visualization analysis make our method more convincing and interpretable.
description: 14 pages,9 figures
A General Destriping Framework for Remote Sensing Images Using Flatness Constraint
Creators: name: Naganuma, Kazuki
name: Ono, Shunsuke
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Removing stripe noise, i.e., destriping, from remote sensing images is an essential task in terms of visual quality and subsequent processing. Most existing destriping methods are designed by combining a particular image regularization with a stripe noise characterization that cooperates with the regularization, which precludes us to examine and activate different regularizations to adapt to various target images. To resolve this, two requirements need to be considered: a general framework that can handle a variety of image regularizations in destriping, and a strong stripe noise characterization that can consistently capture the nature of stripe noise, regardless of the choice of image regularization. To this end, this paper proposes a general destriping framework using a newly-introduced stripe noise characterization, named flatness constraint, where we can handle various regularization functions in a unified manner. Specifically, we formulate the destriping problem as a nonsmooth convex optimization problem involving a general form of image regularization and the flatness constraint. The constraint mathematically models that the intensity of each stripe is constant along one direction, resulting in a strong characterization of stripe noise. For solving the optimization problem, we also develop an efficient algorithm based on a diagonally preconditioned primal-dual splitting algorithm (DP-PDS), which can automatically adjust the stepsizes. The effectiveness of our framework is demonstrated through destriping experiments, where we comprehensively compare combinations of a variety of image regularizations and stripe noise characterizations using hyperspectral images (HSI) and infrared (IR) videos.
description: Accepted to IEEE Transactions on Geoscience and Remote Sensing. The code is available at https://drive.google.com/file/d/1krrce7Iv09rkpQBiosMbd6StMLAmc_UL/view?usp=sharing The project page is accessed at https://www.mdi.c.titech.ac.jp/publications/a-general-destriping-framework
Atypical antipsychotic agents; Peas in a pod or chalk and cheese?
Creators: name: Singh, Ajeet B.
name: Nierenberg, Andrew A.
name: Yatham, Lakshmi N.
name: Berk, Michael
Publisher: name: BioMed Central
Year: 2016

description: With escalating health expenditure and a shrinking purse, there is increased focus on the cost efficacy of still patented versus generic medications in general, and for atypical antipsychotics in particular. In a recent BMC Medicine article, Godman and colleagues presented data indicating poor uptake of the off patent atypical antipsychotic risperidone, arguing for authorities to mandate its greater use. This is under the assumption of clinical equivalence of atypical antipsychotics. This commentary argues that there are clinically meaningful differences between atypical antipsychotics and important inter-individual heterogeneity in clinical response and tolerability. Access to a broad range of atypical antipsychotics enables clinicians to tailor care, taking consideration of differential efficacy and adverse effects profile in order to meet the needs of individual patients with improved real world effectiveness of treatment. Restriction of agent choice risks detracting from optimal clinical care, with possible poorer outcomes and greater costs of care. A balance between encouraging use of cheapest in class agent and allowing access to various atypical agents for tailored care is likely to produce optimal health outcomes. Please see related article: http://www.biomedcentral.com/1741-7015/12/98 .
The quantification of Simpsons paradox and other contributions to contingency table theory
Creators: name: Teuscher, Friedrich
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistics Theory (math.ST)
subject: Methodology (stat.ME)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: The analysis of contingency tables is a powerful statistical tool used in experiments with categorical variables. This study improves parts of the theory underlying the use of contingency tables. Specifically, the linkage disequilibrium parameter as a measure of two-way interactions applied to three-way tables makes it possible to quantify Simpsons paradox by a simple formula. With tests on three-way interactions, there is only one that determines whether the partial interactions of all variables agree or whether there is at least one variable whose partial interactions disagree. To date, there has been no test available that determines whether the partial interactions of a certain variable agree or disagree, and the presented work closes this gap. This work reveals the relation of the multiplicative and the additive measure of a three-way interaction. Another contribution addresses the question of which cells in a contingency table are fixed when the first- and second-order marginal totals are given. The proposed procedure not only detects fixed zero counts but also fixed positive counts. This impacts the determination of the degrees of freedom. Furthermore, limitations of methods that simulate contingency tables with given pairwise associations are addressed.
description: 36 pages
The insertion of multi-spanning membrane proteins via the YidC insertase in Escherichia coli
Creators: name: Kudva, Renuka
Publisher: name: Zenodo
Year: 2013

description: The insertion of proteins into lipid membranes is a complex process and is an amalgamation of
targeting and transport events. This study focuses on insertion of membrane proteins into the inner
membrane (IM) of the Gram negative bacterium, Escherichia coli (E.coli).
Protein insertion into the bacterial inner membrane has been thought to occur co-translationally and
is aided by the Signal Recognition Particle (SRP) pathway. The evolutionarily conserved,
membrane embedded insertases SecYEG and YidC are the conduits via which inner membrane
proteins are inserted into lipids. SecYEG serves a dual function, in addition to functioning as an
insertase for membrane proteins, it secretes proteins across the membrane with the aid of the
molecular motor protein SecA. YidC was thought to function as an insertase for a subset of
membrane proteins and targeting of proteins to YidC was controversially discussed to be SRP-
dependent. Although YidC was thought to have insertion functions secondary to SecYEG, an
interesting fact is that there are five times more YidC molecules in cells than SecYEG.
This study investigates whether YidC can take over some of the functions of SecYEG. We use in
vitro assays to determine whether multi-spanning membrane proteins can be inserted via YidC into
membranes and try to establish what makes a substrate YidC-dependent. We also investigate the
role of SRP in targeting multi-spanning membrane proteins to the YidC insertase in the IM.
The data described in this thesis suggest that most multi-spanning membrane proteins can be
targeted by SRP to either SecYEG or YidC in membranes and be inserted efficiently. We also
demonstrate that YidC cannot insert SecA-dependent membrane proteins, and that these are
exclusively inserted into membranes via SecYEG. Interestingly however, we show that SecA-
dependent membrane proteins can be lipid inserted via YidC, presumably partially and via their N-
terminus. The mechanism by which these proteins can be completely membrane inserted after
initial insertion via YidC remains to be investigated.
Based on these data, we propose that the YidC insertase is engaged by most multi-spanning
membrane proteins for inserting into the IM. This potentially prevents a situation where the less
abundant SecYEG translocon is occupied by ribosome-nascent chains which would impede the
insertion of secretory proteins.
Non-thermal neutrino-like hot dark matter in light of the $S_8$ tension
Creators: name: Das, Subinoy
name: Maharana, Anshuman
name: Poulin, Vivian
name: Sharma, Ravi Kumar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The $Λ$CDM prediction of $S_8\equivσ_8(Ω_m/0.3)^{0.5}$ -- where $σ_8$ is the root mean square of matter fluctuations on a 8 $h^{-1}$Mpc scale -- once calibrated on Planck CMB data is $2-3σ$ lower than its direct estimate by a number of weak lensing surveys. In this paper, we explore the possibility that the '$S_8$-tension' is due to a non-thermal hot dark matter (HDM) fractional contribution to the universe energy density leading to a power suppression at small-scales in the matter power spectrum. Any HDM models can be characterized by its effective mass $ m_{sp}^{\rm eff}$ and its contribution to the relativistic degrees of freedom at CMB decoupling $ΔN_{\rm eff}$. Taking the specific example of a sterile particle produced from the decay of the inflaton during a matter dominated era, we find that from Planck only the tension can be reduced below $2σ$, but Planck does not favor a non-zero ${m_{sp}^{\rm eff},ΔN_{\rm eff}}$. In combination with a measurement of $S_8$ from KIDS1000+BOSS+2dfLenS, the $S_8$-tension would hint at the existence of a particle of mass $ m_{sp}^{\rm eff} \simeq 0.67_{-0.48}^{+0.26}$ ${\rm eV}$ with a contribution to $ΔN_{\rm eff} \simeq0.06\pm0.05$. However, Pantheon and BOSS BAO/$fσ_8$ data restricts the particle mass to $m_{sp}^{\rm eff} \simeq 0.48_{-0.36}^{+0.17}$ and contribution to $ΔN_{\rm eff} \simeq 0.046_{-0.031}^{+0.004}$. We discuss implications of our results for other canonical non-thermal HDM models -- the Dodelson-Widrow model and a thermal sterile particle with a different temperature in the hidden sector. We report competitive results on such hidden sector temperature which might have interesting implications for particle physics model building, in particular connecting the $S_8$-tension to the longstanding short baseline oscillation anomaly.
description: accepted Physical Review D, new figures, references and discussion added conclusion is same
title: Correspondance avec Florence Ghrenassia, Christine Bergstrom, Jean-Claude Melchior, Christian Perronne, transféré à Emmanuelle Pascolo
Creators: name: Bergstrom, Christine
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020

description: Source: http://www.calames.abes.fr/pub/ms/Calames-20193111135799617
description: created: start=2010-01-04;end=2010-01-05
DETERMINING THE PSYCHOSOCIAL PROBLEMS OF STUDENTS WITH HEARING IMPAIRMENT IN PORT HARCOURT METROPOLIS OF RIVERS STATE
Creators: name: Egbuchu,(Ph.D), Samuel, Alerachi
name: Chidi-Belonwu,, Obianuju Esther
Publisher: name: America serial
Year: 2024
Subjects: Psychosocial problems
Hearing Impairment
Gender

description: This study examined the psychosocial problems of students with hearing impairment in Port Harcourt Metropolis of Rivers State. The survey research design was adopted in carrying out the study, with the population of 1.080 students with hearing impairment from ten (10) Special Schools in Port Harcourt Metropolis of Rivers State. The sample size of 292 respondents, which was determined using the Taro Yamen's formula, was drawn from 6 out of 10 schools in Port Harcourt Metropolis of Rivers State, through simple random sampling technique. A researcher design questionnaire titled Psychological Problems of Students with Hearing Impairment Questionnaire (PPSIQ) was used to collect the required data. The study concluded that it is the right of every child to receive equal opportunity for education. Based on the findings, the study recommended among others that, parents should seek for help at the very early stage to avoid adverse effect on the child, since the manner at which students with hearing impairment develop psychological problems is no associated with its mode of inception.
title: Criteria for trustworthy digital transactions - Blockchain/DLT between eI-DAS, GDPR, Data and Evidence Preservation
Creators: name: Kusber, Tomasz
name: Schwalm, Steffe
name: Shamburger, Kalinda
name: Korte, Ulrike
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2020
Subjects: subject: DLT
subject: Blockchain
subject: eIDAS
subject: Trust Service
subject: evidence preservation
subject: trustworthiness

description: With the help of eIDAS [Re14], legislators have created a resilient framework in EU and EFTA to place trustworthy digital transactions more and more in the centre of business relationships. The regulated use of the trust services (e.g. qualified electronic signature or seal etc.) as well as that of the secure electronic identities provides a solid foundation for the advancement of digitization. The adequate evidence of electronic records as long as they are needed is a critical success-factor for trustworthy digital transactions. The trustworthiness of the transactions must be based on compliance with the basic values of authenticity, integrity, reliability, availability, confidentiality and transferability. After a first hype there are increasingly more considerations also in regulated industries to use DLT for digital processes which have to be accountable. In order to make them evident and to fulfil documentation requirements it is necessary that DLT fulfils the legal framework and prior art based on defined criteria for trustworthy digital transactions. This paper focuses on the challenges and requirements for utilisation of DLT for trustworthy digital processes including long-term preservation.
Error Propagation in Satellite Multi-image Geometry
Creators: name: Mundy, Joseph L
name: Theiss, Hank
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper describes an investigation of the source of geospatial error in digital surface models (DSMs) constructed from multiple satellite images. In this study the uncertainty in surface geometry is separated into two spatial components; global error that affects the absolute position of the surface, and local error that varies from surface point to surface point. The global error component is caused by inaccuracy in the satellite imaging process, mainly due to uncertainty in the satellite position and orientation (pose) during image collection. A key result of the investigation is a new algorithm for determining the absolute geoposition of the DSM that takes into account the pose covariance of each satellite during image collection. This covariance information is used to weigh the evidence from each image in the computation of the global position of the DSM. The use of covariance information significantly decreases the overall uncertainty in global position. The paper also describes an approach to the prediction of local error in the DSM surface. The observed variance in surface position within a single stereo surface reconstruction defines the local horizontal error. The variance in the fused set of elevations from multiple stereo pairs at a single DSM location defines the local vertical error. These accuracy predictions are compared to ground truth provided by LiDAR scans of the same geographic region of interest.
description: 15 pages, 27 figures
title: Automation Potentials in Privacy Engineering
Creators: name: Zimmermann, Christian
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2020
Subjects: subject: Privacy Engineering
subject: Data Protection
subject: Automation

description: The GDPR enshrines the privacy by design paradigm in law, making sound privacy engineering methods more important than ever. Integrating automation and extensive tool support into the privacy engineering process has the potential to support organizations in streamlining the implementation of privacy and data protection by design and reducing its cost. Based on a privacy engineering reference process, this paper systematically investigates automation potential in privacy engineering. In particular, it discusses potentials and implications of automation in privacy engineering and illustrates directions for future research.
Towards Positive Geometry of Multi Scalar Field Amplitudes : Accordiohedron and Effective Field Theory
Creators: name: Jagadale, Mrunmay
name: Laddha, Alok
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The geometric structure of S-matrix encapsulated by the "Amplituhedron program" has begun to reveal itself even in non-supersymmetric quantum field theories. Starting with the seminal work of Arkani-Hamed, Bai, He and Yan it is now understood that for a wide class of scalar quantum field theories, tree-level amplitudes are canonical forms associated to polytopes known as accordiohedra. Similarly the higher loop scalar integrands are canonical forms associated to so called type-D cluster polytopes for cubic interactions or recently discovered class of polytopes termed pseudo-accordiohedron for higher order scalar interactions. In this paper, we continue to probe the universality of these structures for a wider class of scalar quantum field theories. More in detail, we discover new realisations of the associahedron in planar kinematic space whose canonical forms generate (colour-ordered) tree-level S matrix of external massless particles with $n-4$ massless poles and one massive pole at $m^{2}$. The resulting amplitudes are associated to $λ_{1}\, ϕ_{1}^{3}\, +\, λ_{2}\, ϕ_{1}^{2}ϕ_{2}$ potential where $ϕ_{1}$ and $ϕ_{2}$ are massless and massive scalar fields with bi-adjoint colour indices respectively. We also show how in the "decoupling limit" (where $m \rightarrow \infty, λ_{2} \rightarrow \infty$ such that $g := \frac{λ_{2}}{m} = \textrm{finite}$) these associahedra project onto a specific class of accordiohedron which are known to be positive geometries of amplitudes generated by $λϕ_{1}^{3} + g ϕ_{1}^{4}$.
description: 43 pages, 11 Figures
title: IoT Device Profiling: From MUD Files to S×C Contracts
Creators: name: Matthíasson, Guðni
name: Giaretta, Alberto
name: Dragoni, Nicola
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2020
Subjects: subject: Internet of Things
subject: S×C
subject: Security-by-Contract
subject: MUD
subject: Manufacturer Usage Description
subject: Device profiling

description: Security is a serious, and often neglected, issue in the Internet of Things (IoT). In order to improve IoT security, researchers proposed to use Security-by-Contract (S×C), a paradigm originally designed for mobile application platforms. However, S×C assumes that manufacturers equip their devices with security contracts, which makes hard to integrate legacy devices with S×C. In this paper, we explore a method to extract S×C contracts from legacy devices’ Manufacturer Usage Descriptions (MUDs). We tested our solution on 28 different MUD files, and we show that it is possible to create basic S×C contracts, paving the way to complete extraction tools.
Exact results for the six-vertex model with domain wall boundary conditions and a partially reflecting end
Creators: name: Hietala, Linnea
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 82B23, 05A15 (Primary), 33C45 (Secondary)

description: The trigonometric six-vertex model with domain wall boundary conditions and one partially reflecting end on a lattice of size $2n\times m$, $m\leq n$, is considered. The partition function is computed using the Izergin-Korepin method, generalizing the result of Foda and Zarembo from the rational to the trigonometric case. Thereafter we specify the parameters in Kuperberg's way to get a formula for the number of states as a determinant of Wilson polynomials. We relate this to a type of ASM-like matrices.
description: 31 pages