cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Beyond calibration: estimating the grouping loss of modern neural networks
Creators: name: Perez-Lebel, Alexandre
name: Morvan, Marine Le
name: Varoquaux, Gaël
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: The ability to ensure that a classifier gives reliable confidence scores is essential to ensure informed decision-making. To this end, recent work has focused on miscalibration, i.e., the over or under confidence of model scores. Yet calibration is not enough: even a perfectly calibrated classifier with the best possible accuracy can have confidence scores that are far from the true posterior probabilities. This is due to the grouping loss, created by samples with the same confidence scores but different true posterior probabilities. Proper scoring rule theory shows that given the calibration loss, the missing piece to characterize individual errors is the grouping loss. While there are many estimators of the calibration loss, none exists for the grouping loss in standard settings. Here, we propose an estimator to approximate the grouping loss. We show that modern neural network architectures in vision and NLP exhibit grouping loss, notably in distribution shifts settings, which highlights the importance of pre-production validation.
Additional file 2 of Improving lifestyles sustainability through community gardening: results and lessons learnt from the JArDinS quasi-experimental study
Creators: name: Tharrey, Marion
name: Ashby Sachs
name: Perignon, Marlène
name: Simon, Chantal
name: Mejean, Caroline
name: Litt, Jill
name: Darmon, Nicole
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: Cancer

description: Additional file 2. Additional information from the online questionnaire of the JArDinS study.
Supersonic Magnetic Upflows in Granular Cells Observed with Sunrise/IMaX
Creators: name: Borrero, J. M.
name: Pillet, V. Martinez
name: Schlichenmaier, R.
name: Solanki, S. K.
name: Bonet, J. A.
name: Iniesta, J. C. del Toro
name: Schmidt, W.
name: Barthol, P.
name: Gandorfer, A.
name: Domingo, V.
name: Knoelker, M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Using the IMaX instrument on-board the Sunrise stratospheric balloon-telescope we have detected extremely shifted polarization signals around the Fe I 5250.217 Å spectral line within granules in the solar photosphere. We interpret the velocities associated with these events as corresponding to supersonic and magnetic upflows. In addition, they are also related to the appearance of opposite polarities and highly inclined magnetic fields. This suggests that they are produced by the reconnection of emerging magnetic loops through granular upflows. The events occupy an average area of 0.046 arcsec$^2$ and last for about 80 seconds, with larger events having longer lifetimes. These supersonic events occur at a rate of $1.3\times10^{-5}$ occurrences per second per arcsec$^{2}$.
description: Accepted for publication in ApJ Letters. To appear in Sunrise special issue of ApJ Letters, vol 721. 5 pages, 2 bw figures, 2 color figures. 4 movies are available at ftp://ftp.kis.uni-freiburg.de/personal/borrero/sunrise/
Possible optical counterparts of ULXs in NGC 1672
Creators: name: Allak, S.
name: Akyuz, A.
name: Sonbas, E.
name: Dhuga, K. S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In this study, we use archival data from HST, Chandra, XMM-Newton, and Swift-XRT, to probe the nature of 9 (X1-X9) candidate ULXs in NGC 1672. Our study focuses on using the precise source positions obtained via improved astrometry based on {\it Chandra} and HST observations to search for and identify optical counterparts for these ULXs.Unique optical counterparts are identified for X2 an{d X6; two potential counterparts were determined for X1, X5 and X7 within the respective error radii while no optical counterparts were found for the remaining four sources. Based on spectral energy distributions (SEDs), X-ray and optical temporal analyses, some evidences about the nature of X1 and X2 were obtained.
description: To appear in Astronomische Nachrichten / Astronomical Notes (AN). arXiv admin note: substantial text overlap with arXiv:2207.06303
Identifying and targeting immunogenic mutations in ovarian cancer
Creators: name: Martin, Spencer David
Publisher: name: University of British Columbia
Year: 2017

description: A hallmark of cancer is the accumulation of mutations, and a small proportion of these give rise to mutant neoantigens – mutated peptides bound to Major Histocompatibility Complex (MHC) and recognized by T cells. Accumulating evidence suggests that mutant neoantigens (hereafter referred to as “neoantigens”) underlie successful immune therapies in cancers with high mutation loads, such as melanoma. Moreover, neoantigen-specific vaccines have successfully targeted highly mutated murine tumor models. However, less is known about neoantigen-specific T cell responses in cancers with moderate mutation loads, such as ovarian cancer. I hypothesized that (1) modified peptide-based vaccination schedules can lead to enhanced antigen-specific T cell responses; (2) neoantigen-specific vaccines can elicit T cell responses that eradicate murine ovarian tumors; and (3) neoantigen-reactive T cells are detectable in human ovarian tumors and peripheral blood. To activate high frequencies of antigen-specific T cells, I developed a vaccination method involving repeated, daily immunizations with long peptides and adjuvant. This method elicited robust T cell responses that eliminated established murine tumors. I used these enhanced vaccination methods to target tumor-specific mutations identified by exome- and RNA-sequencing of the ovarian tumor model ID8-G7. Prophylactic and therapeutic vaccinations were performed targeting all expressed mutations that had a predicted MHCI binding affinity < 1500 nM (n=17 mutations). Though the vaccines elicited robust T cell responses to most mutations, activated T cells failed to recognize ID8-G7 tumors in vitro and failed to control tumor growth in vivo, indicating that none of the evaluated mutations represented authentic neoantigens. I also investigated the neoantigen-specific T cell repertoire in blood and tumor samples donated by an ovarian cancer patient. A neoantigen-specific T cell response was identified in the first recurrence tumor sample, and a derived T cell clone recognized tumor from each of three time points. Furthermore, peripheral blood samples donated prior disease recurrence harbored T cells recognizing the same mutation. The results presented here show that neoantigen-specific T cells can arise spontaneously in ovarian tumors and are detectable in peripheral blood; however, low mutation burdens in ovarian cancer may limit the utility of neoantigen-targeted vaccines to a minority of patients with this disease.
Accelerated Quantum Monte Carlo with Probabilistic Computers
Creators: name: Chowdhury, Shuvro
name: Camsari, Kerem Y.
name: Datta, Supriyo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum Monte Carlo (QMC) techniques are widely used in a variety of scientific problems and much work has been dedicated to developing optimized algorithms that can accelerate QMC on standard processors (CPU). With the advent of various special purpose devices and domain specific hardware, it has become increasingly important to establish clear benchmarks of what improvements these technologies offer compared to existing technologies. In this paper, we demonstrate 2 to 3 orders of magnitude acceleration of a standard QMC algorithm using a specially designed digital processor, and a further 2 to 3 orders of magnitude by mapping it to a clockless analog processor. Our demonstration provides a roadmap for 5 to 6 orders of magnitude acceleration for a transverse field Ising model (TFIM) and could possibly be extended to other QMC models as well. The clockless analog hardware can be viewed as the classical counterpart of the quantum annealer and provides performance within a factor of $<10$ of the latter. The convergence time for the clockless analog hardware scales with the number of qubits as $\sim N$, improving the $\sim N^2$ scaling for CPU implementations, but appears worse than that reported for quantum annealers by D-Wave.
Filippov-Nambu $n$-algebras relevant to physics
Creators: name: Pletnev, N. G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Gauge symmetry based on Lie algebra has a rather long history and it successfully describes electromagnetism, weak and strong interactions in the nature. Recently the Filippov-Nambu 3-algebras have been in the focus of interest since they appear as gauge symmetries of new superconformal Chern-Simons non-Abelian theories in 2 + 1 dimensions with the maximum allowed number of N = 8 linear supersymmetries. These theories explore the low energy dynamics of the microscopic degrees of freedom of coincident M2 branes and constitute the boundary conformal field theories of the bulk AdS4 / S7 exact 11-dimensional supergravity backgrounds of supermembranes. These mysterious new symmetries, the Filippov-Nambu 3-algebras represent the implementation of non-associative algebras of coordinates of charged tensionless strings, the boundaries of open M2 branes in antisymmetric field magnetic backgrounds of M5 branes in the M2 -M5 system. A crucial input into this construction came from the study of the M2-M5 system in the Basu- Harvey's work where an equation describing the Bogomol'nyi-Prasad- Sommerfeld (BPS) bound state of multiple M2-branes ending on an M5 was formulated. The Filippov-Nambu 3-algebras are either operator or matrix representation of the classical Nambu symmetries of world volume preserving diffeomorphisms of M2 branes. Indeed at the classical level the supermembrane Lagrangian, in the covariant formulation, has the world volume preserving diffeomorphisms symmetry SDiff(M2+1). The Filippov-Nambu 3-algebras presumably correspond to the quantization of the rigid motions in this infinite dimensional group, which describe the low energy excitation spectrum of the M2 branes. It emphasizes the Filippov-Nambu n-algebras as the mathematical framework for describing symmetry properties of classical and quantum mechanical systems.
description: 42 pages, improved version, references added. arXiv admin note: text overlap with arXiv:hep-th/9910096 by other author
New results from the technological prototype of the CALICE highly-granular silicon tungsten electromagnetic calorimeter
Creators: name: Boudry, Vincent
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: An extended version of the CALICE silicon-tungsten ECAL was tested in November 2021 at the DESY beam test facility. With 15 active layers, it featured some with a thin PCB design, and a new compact DAQ system handling all layers in a common set. The noise, self-trigger performances and response to punch-though electrons, without tungsten absorbers, have been evaluated for each of the 15360 channels, using an improved procedure. Showers of low-energy electrons (1 to 6 GeV) have been recorded in two configurations of absorber, and are being analysed. Some preliminary results at the cell level will be presented.
description: Proceedings of the PISA'22 conference, for the CALICE collaboration
Deforming SW curve
Creators: name: Poghossian, Rubik
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A system of Bethe-Ansatz type equations, which specify a unique array of Young tableau responsible for the leading contribution to the Nekrasov partition function in the $ε_2\rightarrow 0$ limit is derived. It is shown that the prepotential with generic $ε_1$ is directly related to the (rescaled by $ε_1$) number of total boxes of these Young tableau. Moreover, all the expectation values of the chiral fields $\langle \tr ϕ^J \rangle $ are simple symmetric functions of their column lengths. An entire function whose zeros are determined by the column lengths is introduced. It is shown that this function satisfies a functional equation, closely resembling Baxter's equation in 2d integrable models. This functional relation directly leads to a nice generalization of the equation defining Seiberg-Witten curve.
description: 14 pages
Trusted Hart for Mobile RISC-V Security
Creators: name: Ushakov, Vladimir
name: Sovio, Sampo
name: Qi, Qingchao
name: Nayani, Vijayanand
name: Manea, Valentin
name: Ginzboorg, Philip
name: Ekberg, Jan Erik
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: The majority of mobile devices today are based on Arm architecture that supports the hosting of trusted applications in Trusted Execution Environment (TEE). RISC-V is a relatively new open-source instruction set architecture that was engineered to fit many uses. In one potential RISC-V usage scenario, mobile devices could be based on RISC-V hardware. We consider the implications of porting the mobile security stack on top of a RISC-V system on a chip, identify the gaps in the open-source Keystone framework for building custom TEEs, and propose a security architecture that, among other things, supports the GlobalPlatform TEE API specification for trusted applications. In addition to Keystone enclaves the architecture includes a Trusted Hart -- a normal core that runs a trusted operating system and is dedicated for security functions, like control of the device's keystore and the management of secure peripherals. The proposed security architecture for RISC-V platform is verified experimentally using the HiFive Unleashed RISC-V development board.
description: This is an extended version of a paper that has been published in Proceedings of TrustCom 2022
System Size Dependence of Particle Production at the SPS
Creators: name: Blume, C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Recent results on the system size dependence of net-baryon and hyperon production as measured at the CERN SPS are discussed. The observed Npart dependences of yields, but also of dynamical properties, such as average transverse momenta, can be described in the context of the core corona approach. Other observables, such as antiproton yields and net-protons at forward rapidities, do not follow the predictions of this model. Possible implications for a search for a critical point in the QCD phase diagram are discussed. Event-by-event fluctuations of the relative core to corona source contributions might influence fluctuation observables (e.g. multiplicity fluctuations). The magnitude of this effect is investigated.
description: 10 pages, 4 figurs. Proceedings of the 6th International Workshop on Critical Point and Onset of Deconfinement in Dubna, Aug. 2010
Predictive Display with Perspective Projection of Surroundings in Vehicle Teleoperation to Account Time-delays
Creators: name: Prakash, Jai
name: Vignati, Michele
name: Vignarca, Daniele
name: Sabbioni, Edoardo
name: Cheli, Federico
Publisher: name: arXiv
Year: 2022
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Teleoperation provides human operator sophisticated perceptual and cognitive skills into an over the network control loop. It gives hope of addressing some challenges related to vehicular autonomy which is based on artificial intelligence by providing a backup plan. Variable network time delays in data transmission is the major problem in teleoperating a vehicle. On 4G network, variability of these delays is high. Due to this, both video streaming and driving commands encounter variable time delay. This paper presents an approach of providing the human operator a forecast video stream which replicates future perspective of vehicle field of view accounting the delay present in the network. Regarding the image transformation, perspective projection technique is combined with correction given by smith predictor in the control loop. This image transformation accounts current time delay and tries to address both issues, time delays as well as its variability. For experiment sake, only frontward field of view is forecast. Performance is evaluated by performing online vehicle teleoperation on street edge case maneuvers and later comparing the path deviation with and without perspective projection.
Decentralized Fair Scheduling in Two-Hop Relay-Assisted Cognitive OFDMA Systems
Creators: name: Wang, Rui
name: Lau, Vincent K. N.
name: Cui, Ying
Publisher: name: arXiv
Year: 2010
Subjects: subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: In this paper, we consider a two-hop relay-assisted cognitive downlink OFDMA system (named as secondary system) dynamically accessing a spectrum licensed to a primary network, thereby improving the efficiency of spectrum usage. A cluster-based relay-assisted architecture is proposed for the secondary system, where relay stations are employed for minimizing the interference to the users in the primary network and achieving fairness for cell-edge users. Based on this architecture, an asymptotically optimal solution is derived for jointly controlling data rates, transmission power, and subchannel allocation to optimize the average weighted sum goodput where the proportional fair scheduling (PFS) is included as a special case. This solution supports decentralized implementation, requires small communication overhead, and is robust against imperfect channel state information at the transmitter (CSIT) and sensing measurement. The proposed solution achieves significant throughput gains and better user-fairness compared with the existing designs. Finally, we derived a simple and asymptotically optimal scheduling solution as well as the associated closed-form performance under the proportional fair scheduling for a large number of users. The system throughput is shown to be $\mathcal{O}\left(N(1-q_p)(1-q_p^N)\ln\ln K_c\right)$, where $K_c$ is the number of users in one cluster, $N$ is the number of subchannels and $q_p$ is the active probability of primary users.
description: 29 pages, 9 figures, IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING
Additional file 2 of Transcribed sex-specific markers on the Y chromosome of the oriental fruit fly, Bactrocera dorsalis
Creators: name: Carraretto, Davide
name: Nidchaya Aketarawong
name: Cosimo, Alessandro Di
name: Manni, Mosè
name: Scolari, Francesca
name: Valerio, Federica
name: Malacrida, Anna R.
name: Gomulski, Ludvik M.
name: Gasperi, Giuliano
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2: Figure S1. Sequence of the extended contig1 showing the positions of the primers. The grey box indicates the extent of the first repetition unit.
NGS CRISPR Sequencing Solutions
Creators: name: Dianna, Gellar
Publisher: name: Zenodo
Year: 2023

description: The CRISPR-Cas9 gene targeting system currently offers the simplest, most versatile, most precise, and most effective method for genetic manipulation. lt has a myriad of potential applications, from medicine to crop seed enhancement CRISPR-Cas9 has also been adapted to enable high-throughput genome editing and has revolutionized the generation of targeted mutations. To address the emerging needs of RD communities, CD Genomics has developed multiple strategies for screening and validating CRISPR-Cas9-based mutations by harnessing amplicon and on/off-target analysis-based next-generation sequencing.
On the Transition from Accretion Powered to Rotation Powered Millisecond Pulsars
Creators: name: Takata, J.
name: Cheng, K. S.
name: Taam, R. E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The heating associated with the deposition of $γ$-rays in an accretion disk is proposed as a mechanism to facilitate the transformation of a low mass X-ray binary to the radio millisecond pulsar phase. The $γ$-ray emission produced in the outer gap accelerator in the pulsar magnetosphere likely irradiates the surrounding disk, resulting in its heating and to the possible escape of matter from the system. We apply the model to PSR J1023+0038, which has recently been discovered as a newly born rotation powered millisecond pulsar. The predicted $γ$-ray luminosity $\sim 6 \times 10^{34}~\mathrm{erg~s^{-1}}$ can be sufficient to explain the disappearance of the truncated disk existing during the 8~month$\sim 2$~yr period prior to the 2002 observations of J1023+0038 and the energy input required for the anomalously bright optical emission of its companion star.
description: 13 pages, 3 figures, accepted in ApJL
Additional file 3 of Transcribed sex-specific markers on the Y chromosome of the oriental fruit fly, Bactrocera dorsalis
Creators: name: Carraretto, Davide
name: Nidchaya Aketarawong
name: Cosimo, Alessandro Di
name: Manni, Mosè
name: Scolari, Francesca
name: Valerio, Federica
name: Malacrida, Anna R.
name: Gomulski, Ludvik M.
name: Gasperi, Giuliano
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 3: Figure S2. Sequence of the extended contig2 showing the positions exons (yellow rectangles) and primers.
A Dynamic Weighted Federated Learning for Android Malware Classification
Creators: name: Chaudhuri, Ayushi
name: Nandi, Arijit
name: Pradhan, Buddhadeb
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Android malware attacks are increasing daily at a tremendous volume, making Android users more vulnerable to cyber-attacks. Researchers have developed many machine learning (ML)/ deep learning (DL) techniques to detect and mitigate android malware attacks. However, due to technological advancement, there is a rise in android mobile devices. Furthermore, the devices are geographically dispersed, resulting in distributed data. In such scenario, traditional ML/DL techniques are infeasible since all of these approaches require the data to be kept in a central system; this may provide a problem for user privacy because of the massive proliferation of Android mobile devices; putting the data in a central system creates an overhead. Also, the traditional ML/DL-based android malware classification techniques are not scalable. Researchers have proposed federated learning (FL) based android malware classification system to solve the privacy preservation and scalability with high classification performance. In traditional FL, Federated Averaging (FedAvg) is utilized to construct the global model at each round by merging all of the local models obtained from all of the customers that participated in the FL. However, the conventional FedAvg has a disadvantage: if one poor-performing local model is included in global model development for each round, it may result in an under-performing global model. Because FedAvg favors all local models equally when averaging. To address this issue, our main objective in this work is to design a dynamic weighted federated averaging (DW-FedAvg) strategy in which the weights for each local model are automatically updated based on their performance at the client. The DW-FedAvg is evaluated using four popular benchmark datasets, Melgenome, Drebin, Kronodroid and Tuandromd used in android malware classification research.
description: Accepted in SoCTA 2022
title: Fisheries and aquaculture potential of the Caribbean spider crab Maguimithrax spinosisimus around Eleuthera, The Bahamas
Creators: name: Zeinert, Logan R.
Publisher: name: Memorial University of Newfoundland
Year: 2020

description: The Caribbean spider crab Maguimithrax spinosissimus is the largest brachyuran crab in the Caribbean. In this thesis I investigated the population characteristics of M. spinosissimus on the island of Eleuthera, The Bahamas, as well as the potential of this crab to remove biofouling on marine aquaculture pens. In chapter 2 I investigated the size ranges of crabs at patch reefs, a blue hole and an anchialine pond in Eleuthera (January to June, 2018). Males reached larger mean carapace widths than females at all sites. Principal component analysis and hierarchical cluster analyses were used to determine size at maturity; males reached morphological and behavioural maturity at larger carapace widths than females. Haemolymph BRIX levels were used as an indicator of general condition, the levels were relatively high and not dissimilar between sites. The meat yield from male crabs was higher than that of females and comparable to other decapods. In chapter 3, I showed spider crabs exhibited a nocturnal pattern of activity in laboratory tanks. The crabs consumed 3.91 ± 0.35 and 6.97 ± 0.73 % of their bodyweight of algae in 22 - 24°C and 26 - 28°C water, respectively, and although the species is primarily herbivorous they also readily consumed whole fish. Spider crabs were placed on a heavily fouled, offshore aquaculture cage (SeaStation 3000) in confined mesh enclosures to determine if they could be used to remove biofouling organisms. They effectively removed 40 and 90 % of fouling organisms after two and four weeks, respectively, while showing no discriminatory feeding preferences. The crabs were more effective at removing fouling than manual diver scrubbing. The survival rates of crabs inside the aquaculture cage varied between 66.6% and 73.9% during 3 to 6 month trials. The data gathered for this species could be used to establish management plans for an artisanal fishery in the Bahamian archipelago, it also demonstrated the potential of the crab as an effective, environmentally friendly biofouling removing alternative for sustainable aquaculture.
Physical layer security in massive MIMO systems
Creators: name: Zhu, Jun
Publisher: name: University of British Columbia
Year: 2016

description: Massive multiple-input multiple-output (MIMO) is one of the key technologies for the emerging fifth generation (5G) wireless networks, and has the potential to tremendously improve spectral and energy efficiency with low-cost implementations. While massive MIMO systems have drawn great attention from both academia and industry, few efforts have been made on how the richness of the spatial dimensions offered by massive MIMO affects wireless security. As security is crucial in all wireless systems due to the broadcast nature of the wireless medium, in this thesis, we study how massive MIMO technology can be used to guarantee communication security in the presence of a passive multi-antenna eavesdropper. Our proposed massive MIMO system model incorporates relevant design choices and constraints such as time-division duplex (TDD), uplink training, pilot contamination, low-complexity signal processing, and low-cost hardware components. The thesis consists of three main parts. We first consider physical layer security for a massive MIMO system employing simple artificial noise (AN)-aided matched-filter (MF) precoding at the base station (BS). For both cases of perfect training and pilot contamination, we derive a tight analytical lower bound for the achievable ergodic secrecy rate, and an upper bound for the secrecy outage probability. Both bounds are expressed in closed form, providing an explicit relationship between all system parameters, offering significant insights for system design. We then generalize the work by comparing different types of linear data and AN precoders in a secure massive MIMO network. The system performance, in terms of the achievable ergodic secrecy rate is obtained in closed form. In addition, we propose a novel low-complexity data and AN precoding strategy based on a matrix polynomial expansion. Finally, we consider a more realistic system model by taking into account non-ideal hardware components. Based on a general hardware impairment model, we derive a lower bound for the ergodic secrecy rate achieved by each user when AN-aided MF precoding is employed at the BS. By exploiting the derived analytical bound, we investigate the impact of various system parameters on the secrecy rate and optimize both the uplink training pilots and AN precoder to maximize the secrecy rate.
title: A fishy tale: Foreign body ingestion resulting in hepatic abscess formation
Creators: name: Choudhary, Jaffer
Publisher: name: EURORAD
Year: 2022
Subjects: subject: Abdominal imaging
subject: Abdomen
subject: CT
subject: MR
subject: Drainage
subject: Abscess
subject: Foreign bodies
subject: Clinical Cases

description: Clinical History: A 75-year-old man presented to the emergency department with a two-week history of dyspnoea, epigastric pain, and constipation. Physical examination revealed a distended abdomen and pyrexia. His past medical history included surgically managed colorectal carcinoma and COPD. Blood tests showed raised inflammatory markers and deranged liver enzymes.

description: 75 years, male
A Modern Model Description of Magnetism
Creators: name: Irkhin, V. Yu.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A comparison is given of the fundamental works of S. V. Vonsovsky on the many-electron polar and s-d(f) exchange models with the subsequent development of the theory of magnetism of transition and rare earth metals and their compounds. Special attention is given to the derivation of different many-electron models (by Heisenberg, Hubbard, Anderson) and to the interrelation between them. Among the problems considered in this review, of most importance are the many-electron approaches used in the description of systems of d and f electrons, the atomic representation of X-operators, and the problem of strong itinerant magnetism and formation of local moments. The application of these concepts to highly correlated systems, in particular, to the half-metallic ferromagnets and the Kondo lattices is discussed.
description: In Russian (the English version can be accessed from the DOI link below or requested from the author); 72 pages
Additional file 4 of Transcribed sex-specific markers on the Y chromosome of the oriental fruit fly, Bactrocera dorsalis
Creators: name: Carraretto, Davide
name: Nidchaya Aketarawong
name: Cosimo, Alessandro Di
name: Manni, Mosè
name: Scolari, Francesca
name: Valerio, Federica
name: Malacrida, Anna R.
name: Gomulski, Ludvik M.
name: Gasperi, Giuliano
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 4: Figure S3. Sequence of the extended contig3 showing the positions of an exon (yellow rectangle) and primers.
The Inventory of Motivations for Suicide Attempts (IMSA) : developing and validating a new measure in five samples
Creators: name: May, Alexis Merry
Publisher: name: University of British Columbia
Year: 2016

description: Suicide is a leading cause of death worldwide. Despite increased research and prevention efforts, suicide attempt and death rates have not declined. One way to improve suicide prevention is to better understand the motivations for suicide attempts. The field lacks a psychometrically sound, comprehensive measure to routinely why individuals try to end their lives. The Inventory of Motivations for Suicide Attempts (IMSA) was developed to assess motivations for suicide emphasized by major theories of suicidality. The IMSA was administered to five samples of individuals who had attempted suicide: undergraduates (N=66), outpatients (N=53), adult inpatients (N=59), adolescents (N=50), and a community sample recruited online (N=222). Demographic data and characteristics of the suicide attempt (e.g., method, intent, lethality, pre-attempt communication) were also collected. In all five samples, psychache and hopelessness were the most common and strongly endorsed motivations, while interpersonal influence was the least endorsed. Regardless of sample, the individual IMSA scales demonstrated good internal reliability, as did two superordinate IMSA factors identified through exploratory factor analysis. The two superordinate factors captured Internal Motivations (characterized by needing to escape or relieve unmanageable internal emotions and thoughts) and Communication Motivations (characterized by a desire to communicate with or influence another individual) in all samples. These two factors demonstrated good convergent and divergent validity when compared to another measure of suicide motivations. In addition, the IMSA scales displayed clinical utility, in which greater endorsement of Internal Motivations was associated with stronger desire to die, whereas greater endorsement of Communication Motivations was associated with weaker suicide intent and greater likelihood of rescue. Findings support two conclusions: 1) the IMSA provides reliable and valid information about a number of motivations for attempted suicide across diverse participants and situations and 2) that those motivations, their structure, and their clinical correlates are quite consistent. The IMSA can be of use for both research and clinical purposes when a comprehensive assessment of suicide motivations is desired.
Bayesian Physics Informed Neural Networks for Data Assimilation and Spatio-Temporal Modelling of Wildfires
Creators: name: Dabrowski, Joel Janek
name: Pagendam, Daniel Edward
name: Hilton, James
name: Sanderson, Conrad
name: MacKinlay, Daniel
name: Huston, Carolyn
name: Bolt, Andrew
name: Kuhnert, Petra
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: We apply the Physics Informed Neural Network (PINN) to the problem of wildfire fire-front modelling. We use the PINN to solve the level-set equation, which is a partial differential equation that models a fire-front through the zero-level-set of a level-set function. The result is a PINN that simulates a fire-front as it propagates through the spatio-temporal domain. We show that popular optimisation cost functions used in the literature can result in PINNs that fail to maintain temporal continuity in modelled fire-fronts when there are extreme changes in exogenous forcing variables such as wind direction. We thus propose novel additions to the optimisation cost function that improves temporal continuity under these extreme changes. Furthermore, we develop an approach to perform data assimilation within the PINN such that the PINN predictions are drawn towards observations of the fire-front. Finally, we incorporate our novel approaches into a Bayesian PINN (B-PINN) to provide uncertainty quantification in the fire-front predictions. This is significant as the standard solver, the level-set method, does not naturally offer the capability for data assimilation and uncertainty quantification. Our results show that, with our novel approaches, the B-PINN can produce accurate predictions with high quality uncertainty quantification on real-world data.
description: Accepted for publication in Spatial Statistics
Time dependent neutrino billiards
Creators: name: Matrasulov, D. U.
name: Sobirov, Z. A.
name: Ataev, Sh.
name: Yusupov, H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Quantum dynamica of a massless Dirac particle in time-dependent 1D box and circular billiard with time-dependent radius is studied. An exact analytical wave functions and eigenvalues are obtained for the case of linear time-dependence of the boundary position.
Hysteresis of atmospheric parameters of 12 RR Lyrae stars based on multichannel simultaneous Stroemgren photometry
Creators: name: de Boer, K. S.
name: Maintz, G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: RR Lyrae stars have been observed to improve the insight into the processes at work in their atmospheres. Simultaneous Stroemgren-photometry allows to obtain a rapid sequence of measurements in which photometric indices are unaffected by non-optimum observing conditions. The indices y, b-y, and c_1 are used with an established calibration to derive T_eff and to derive the gravity, log g_BJ from the Balmer jump, throughout the pulsation cycle. By employing the equations for stellar structure, additional parameters can be derived. Stroemgren photometry and its calibration in terms of T_eff and log g can be used to determine the run of R and the atmosphere pulsation velocity. We find that the Balmer-line strengths are correlated with T_eff and that the strength of the Ca_ii K line correlates well with the radius of the star and thus the pulsation-dependent density of the atmosphere. The density in the stellar atmosphere fluctuates as indicated by the changes in the gravity log g_BJ, derived from c_1, between 2.3 and 4.5 dex. Also the Stroemgren metal index, m_1, fluctuates. We find a disagreement between log g(T,L,M), the gravity calculated from T_eff, L, and the mass M,and the gravity log g_BJ. This can be used to reassess the mass and the absolute magnitude of an individual star.The curves derived for the pulsational velocity V_pul differ from curves obtained from spectra needed to apply the Baade-Wesselink method; we think these differences are due to phase dependent differences in the optical depth levels sampled in continuum photometry and in spectroscopy. We find an atmospheric oscillation in these fundamental mode RR Lyrae stars of periodicity P/7.
description: 12 pages, 11 figures
On hidden symmetries of extremal Kerr-NUT-AdS-dS black holes
Creators: name: Rasmussen, Jorgen
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is well known that the Kerr-NUT-AdS-dS black hole admits two linearly independent Killing vectors and possesses a hidden symmetry generated by a rank-2 Killing tensor. The near-horizon geometry of an extremal Kerr-NUT-AdS-dS black hole admits four linearly independent Killing vectors, and we show how the hidden symmetry of the black hole itself is carried over by means of a modified Killing-Yano potential which is given explicitly. We demonstrate that the corresponding Killing tensor of the near-horizon geometry is reducible as it can be expressed in terms of the Casimir operators formed by the four Killing vectors.
description: 7 pages
Additional file 1 of Prevention and control of COVID-19 by primary health care facilities in China: a field-survey-based qualitative study in three typical cities
Creators: name: Yan, Yun-yun
name: Fan, Teng-yang
name: Zheng, Yan-ling
name: Yang, Hai-qin
name: Li, Tian-shu
name: Wang, Hai-tang
name: Gu, Yan-feng
name: Xiao, Xue
name: Du, Zhao-hui
name: Sun, Xiao-ming
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Computational Biology

description: Additional file 1.
Topological Hall effect induced by classical large-spin background: $su(2)$ path-integral approach
Creators: name: Kesharpu, Kaushal K.
name: Kochetov, Evgenii A.
name: Ferraz, Alvaro
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The $su(2)$ coherent-state path-integral technique is employed to study lattice electrons strongly coupled to a quantum spin background. In the large-spin limit it is replaced with its classical counterpart that breaks the time-reversal symmetry. The fermions propagating through a classical large-spin texture may then exhibit the topological Hall effect which arises even for a zero scalar spin chirality of the underlying spin background.
description: 6 pages, 9 figures
Seymour's second neighborhood conjecture for tournaments missing a generalized star
Creators: name: Ghazal, Salman
Publisher: name: arXiv
Year: 2011
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Seymour's Second Neighborhood Conjecture asserts that every digraph (without digons) has a vertex whose first out-neighborhood is at most as large as its second out-neighborhood. We prove its weighted version for tournaments missing a generalized star. As a consequence the weighted version holds for tournaments missing a sun, star, or a complete graph.
description: Accepted for publication in Journal of Graph Theory in 24 June 2011
title: Healthcare provider knowledge, beliefs, and attitudes regarding opioids for chronic non-cancer pain in North America: a systematic review
Creators: name: Bell, Louise
Publisher: name: Memorial University of Newfoundland
Year: 2020

description: The aim of this review was to identify empirically supported barriers and facilitators for prescribing opioids for Chronic Non-Cancer Pain (CNCP) through a systematic review of qualitative literature. Six databases were searched from inception to June 3, 2019 for qualitative studies reporting on provider knowledge, attitudes, beliefs, or practices pertaining to prescribing opioids for CNCP in North America. Data were extracted, risk of bias rated, and confidence in evidence graded using Cochrane Confidence in the Evidence from Reviews of Qualitative research (CERQual). Constructs identified were coded using the Theoretical Domains Framework. Twenty-six studies reporting on 599 healthcare providers were included. Fourteen constructs were identified as barriers or facilitators to prescribing opioids for CNCP that fell within seven domains. Domains and constructs identified as barriers included: (1) Environmental Context, (a) patient-related salient events (e.g., overdose), (b) provider-related salient events (e.g., threat by patient), and (c) time constraints; (2) Emotion, (a) concerns over problematic use, addiction, dependence, tolerance, and side effects, and (b) regulatory scrutiny; (3) Knowledge; (4) Beliefs About Consequences; and (5) Beliefs About Capabilities. Domains and constructs identified as facilitators included: (1) Environmental Context, (a) lack of available non-opioid alternatives, and (b) institutional pressure; (2) Social Influences, (a) patient-provider relationship, and (b) patient-provider communication; (3) Goals; and (4) Knowledge on opioid prescribing tools. Understanding the barriers and facilitators that influence opioid-prescribing offers important insight into modifiable targets for interventions that can support providers in delivering care consistent with guidelines to manage CNCP, while minimizing risks.
Additional file 6 of Transcribed sex-specific markers on the Y chromosome of the oriental fruit fly, Bactrocera dorsalis
Creators: name: Carraretto, Davide
name: Nidchaya Aketarawong
name: Cosimo, Alessandro Di
name: Manni, Mosè
name: Scolari, Francesca
name: Valerio, Federica
name: Malacrida, Anna R.
name: Gomulski, Ludvik M.
name: Gasperi, Giuliano
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 6.Figure S5. Sequence of the extended contig4 showing the positions of a putative exon (yellow rectangle) and primers.
Additional file 9 of Transcribed sex-specific markers on the Y chromosome of the oriental fruit fly, Bactrocera dorsalis
Creators: name: Carraretto, Davide
name: Nidchaya Aketarawong
name: Cosimo, Alessandro Di
name: Manni, Mosè
name: Scolari, Francesca
name: Valerio, Federica
name: Malacrida, Anna R.
name: Gomulski, Ludvik M.
name: Gasperi, Giuliano
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 9. Unedited gel images from Figs. 1, 2, 3, 4 and 7.
Additional file 7 of Transcribed sex-specific markers on the Y chromosome of the oriental fruit fly, Bactrocera dorsalis
Creators: name: Carraretto, Davide
name: Nidchaya Aketarawong
name: Cosimo, Alessandro Di
name: Manni, Mosè
name: Scolari, Francesca
name: Valerio, Federica
name: Malacrida, Anna R.
name: Gomulski, Ludvik M.
name: Gasperi, Giuliano
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 7: Figure S6. Alignment of part of the extended contig2 and Scaffold01347 (NW_011875054.1), indicating the positions of primers designed to amplify preferentially the NW_011875054.1 sequence.
New Covariant Feynman Rules for Effective Field Theories
Creators: name: von Gersdorff, Gero
name: Santos, Kevin
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We provide a new and completely general formalism to compute the effective field theory matching contributions from integrating out massive fields in a manifestly gauge covariant way, at any desired loop order. The formalism is based on old ideas such as the background field method and the heat kernel, however we add some crucial new ingredients that greatly improve the simplicity and general applicability of the approach. We formulate our method in terms of Feynman rules, the resulting effective action is expressed in terms of local heat kernel coefficients. We also provide as supplementary material a mathematica code that facilitates the computation of these coefficients.
description: Journal version
Quantum Heisenberg antiferromagnet on low-dimensional frustrated lattices
Creators: name: Derzhko, Oleg
name: Krokhmalskii, Taras
name: Richter, Johannes
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Using a lattice-gas description of the low-energy degrees of freedom of the quantum Heisenberg antiferromagnet on the frustrated two-leg ladder and bilayer lattices we examine the magnetization process at low temperatures for these spin models. In both cases the emergent discrete degrees of freedom implicate a close relation of the frustrated quantum Heisenberg antiferromagnet to the classical lattice gas with finite nearest-neighbor repulsion or, equivalently, to the Ising antiferromagnet in a uniform magnetic field. Using this relation we obtain analytical results for thermodynamically large systems in the one-dimensional case. In the two-dimensional case we perform classical Monte Carlo simulations for systems of up to $100 \times 100$ sites.
description: Submitted to Teoreticheskaya i Matematicheskaya Fizika (special issue dedicated to the 90th anniversary of Professor Sergei Vladimirovich Tyablikov)