cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Microrobots: Sensing, Autonomy and Intelligence
Creators: name: De Remigis, Eugenia
Publisher: name: Zenodo
Year: 2023
Subjects: microrobotics
microrobots
sensing
autonomy
intelligence

description: These slides have been produced and delivered as part of the requirements for the Microscale Robotics Course of PhD course in Biorobotics at Sant'Anna School of Advanced Studies, Pisa, on December 14th 2022. These slides provide an introductory review of the state of the art of microrobotics, as regards the concepts of sensing, autonomy and intelligence.
description: {"references": ["Beni, Gerardo, and Jing Wang. \"Swarm Intelligence in Cellular Robotic Systems.\" In Robots and Biological Systems: Towards a New Bionics?, edited by Paolo Dario, Giulio Sandini, and Patrick Aebischer, 703\u201312. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. https://doi.org/10.1007/978-3-642-58069-7_38", "Chen, C.-J., and C. Bechinger. \"Collective Response of Microrobotic Swarms to External Threats.\" New Journal of Physics 24, no. 3 (2022). https://doi.org/10.1088/1367-2630/ac5374.", "Fath, A., T. Xia, and W. Li. \"Recent Advances in the Application of Piezoelectric Materials in Microrobotic Systems.\" Micromachines 13, no. 9 (2022). https://doi.org/10.3390/mi13091422.", "Moran, Jeffrey L., and Jonathan D. Posner. \"Phoretic Self-Propulsion.\" Annual Review of Fluid Mechanics 49, no. 1 (2017): 511\u201340. https://doi.org/10.1146/annurev-fluid-122414-034456.", "Palagi, S., and P. Fischer. \"Bioinspired Microrobots.\" Nature Reviews Materials 3, no. 6 (2018): 113\u201324. https://doi.org/10.1038/s41578-018-0016-9.", "Popescu, Mihail N., William E. Uspal, Clemens Bechinger, and Peer Fischer. \"Chemotaxis of Active Janus Nanoparticles.\" Nano Letters 18, no. 9 (2018): 5345\u201349. https://doi.org/10.1021/acs.nanolett.8b02572.", "Soto, Fernando, Emil Karshalev, Fangyu Zhang, Berta Esteban Fernandez de Avila, Amir Nourhani, and Joseph Wang. \"Smart Materials for Microrobots.\" Chemical Reviews 122, no. 5 (March 9, 2022): 5365\u20135403. https://doi.org/10.1021/acs.chemrev.0c00999.", "Wang, Wei, and Thomas E. Mallouk. \"A Practical Guide to Analyzing and Reporting the Movement of Nanoscale Swimmers.\" ACS Nano 15, no. 10 (October 26, 2021): 15446\u201360. https://doi.org/10.1021/acsnano.1c07503."]}
title: Missed School Days: A Correlational Study Between Children with Asthma and Presence of School Nurses
Creators: name: Brodeu, Shea
name: O’Connor, Caitlyn
name: Synowietz, Rebekah
name: Carson, Carrie
name: Goboze, Olubukola
name: Patterson, Cierra
Publisher: name: Old Dominion University Libraries
Year: 2017

description: Currently, there is a lack of research on the relationship between full-time nurse presence in schools and absenteeism among school-aged children with asthma. The purpose of this paper is to determine the correlation between the amount of time school-aged children are absent and the amount of time a school nurse is absent. A nonexperimental quantitative descriptive correlational study will be conducted with 14 randomly selected participating schools in the Chesapeake public school district. Each school will receive a questionnaire inquiring about the number of asthmatic children enrolled in the school, number of absences of said children, weekly hours the school nurse is present, and number of absences of asthmatic children when the nurse is not present. After obtaining the data from the schools, a single-sample T-test with an alpha of 0.05 will be used for statistical analysis. It is expected to reveal that the number of absences of school-aged children with asthma will have positive correlation with the amount of time the school nurse is absent. The findings of this study will implicate that having a full-time school nurse increases attendance of asthmatic school-aged children.
Electronic Health Records: Cure-all or Chronic Condition?
Creators: name: Kimble, Chris
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Computer-based information systems feature in almost every aspect of our lives, and yet most of us receive handwritten prescriptions when we visit our doctors and rely on paper-based medical records in our healthcare. Although electronic health record (EHR) systems have long been promoted as a cost-effective and efficient alternative to this situation, clear-cut evidence of their success has not been forthcoming. An examination of some of the underlying problems that prevent EHR systems from delivering the benefits that their proponents tout identifies four broad objectives - reducing cost, reducing errors, improving coordination and improving adherence to standards - and shows that they are not always met. The three possible causes for this failure to deliver involve problems with the codification of knowledge, group and tacit knowledge, and coordination and communication. There is, however, reason to be optimistic that EHR systems can fulfil a healthy part, if not all, of their potential.
Reduktive Desaminierung mit Hydrosilanen katalysiert durch B(C6F5)3
Creators: name: Fang, Huaquan
name: Oestreich, Martin
Publisher: name: Technische Universität Berlin
Year: 2020
Subjects: subject: 540 Chemie und zugeordnete Wissenschaften
subject: Amine
subject: Bor
subject: Defunktionalisierung
subject: Reduktion
subject: Silane

description: Es ist bekannt, dass die starke Bor‐Lewis‐Säure Tris(pentafluorphenyl)boran B(C6F5)3 die dehydrierende Kupplung von bestimmten Aminen und Hydrosilanen bei erhöhten Temperaturen katalysiert. Bei noch höheren Temperaturen konkurriert der Reaktionspfad der Dehydrierung mit dem Bruch der C‐N‐Bindung, was in Defunktionalisierung mündet. Genau das lässt sich zu einer nützlichen Methode für die übergangsmetallfreie, reduktive Desaminierung einer breiten Palette an Aminen sowie Heterocumulenen, z. B. einem Isocyanat und einem Isothiocyanat, ausbauen.
Predictive modeling of hourly probabilities for weather-related road accidents
Creators: name: Becker, Nico
name: Rust, Henning W.
name: Ulbrich, Uwe
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: weather-related road accidents
subject: weather forecast data
subject: Radar-based precipitation data
subject: Accident data
subject: 500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::551 Geologie, Hydrologie, Meteorologie

description: Impacts of weather on road accidents have been identified in several studies with a focus mainly on monthly or daily accident counts. This study investigates hourly probabilities of road accidents caused by adverse weather conditions in Germany on the spatial scale of administrative districts using logistic regression models. Including meteorological predictor variables from radar-based precipitation estimates, high-resolution reanalysis and weather forecasts improves the prediction of accident probability compared to models without weather information. For example, the percentage of correctly predicted accidents (hit rate) is increased from 30 % to 70 %, while keeping the percentage of wrongly predicted accidents (false-alarm rate) constant at 20 %. When using ensemble weather forecasts up to 21 h instead of radar and reanalysis data, the decline in model performance is negligible. Accident probability has a nonlinear relationship with precipitation. Given an hourly precipitation sum of 1 mm, accident probabilities are approximately 5 times larger at negative temperatures compared to positive temperatures. The findings are relevant in the context of impact-based warnings for road users, road maintenance, traffic management and rescue forces.
Numerical-analytical investigation into impact pipe driving in soil with dry friction. Part I: Nondeformable external medium
Creators: name: Aleksandrova, Nadezhda
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: Classical Physics (physics.class-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 74B05, 74C99, 74H10

description: The study focuses on propagation of longitudinal waves in an elastic pipe partly embedded in a medium with dry friction. Mathematical formulation of the problem on the impact pipe driving into the soil is based on the model of longitudinal vibration of an elastic rod with taking into account lateral resistance. The lateral resistance of soil is described by the law of the contact dry friction. Numerical and analytical solutions to problems on longitudinal impulse loading of a pipe are compared.
description: 16 pages, 12 figures
Zero-shot Skeleton-based Action Recognition via Mutual Information Estimation and Maximization
Creators: name: Zhou, Yujie
name: Qiang, Wenwen
name: Rao, Anyi
name: Lin, Ning
name: Su, Bing
name: Wang, Jiaqi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: Zero-shot skeleton-based action recognition aims to recognize actions of unseen categories after training on data of seen categories. The key is to build the connection between visual and semantic space from seen to unseen classes. Previous studies have primarily focused on encoding sequences into a singular feature vector, with subsequent mapping the features to an identical anchor point within the embedded space. Their performance is hindered by 1) the ignorance of the global visual/semantic distribution alignment, which results in a limitation to capture the true interdependence between the two spaces. 2) the negligence of temporal information since the frame-wise features with rich action clues are directly pooled into a single feature vector. We propose a new zero-shot skeleton-based action recognition method via mutual information (MI) estimation and maximization. Specifically, 1) we maximize the MI between visual and semantic space for distribution alignment; 2) we leverage the temporal information for estimating the MI by encouraging MI to increase as more frames are observed. Extensive experiments on three large-scale skeleton action datasets confirm the effectiveness of our method. Code: https://github.com/YujieOuO/SMIE.
description: Accepted by ACM MM 2023
Quantifying intrinsic and extrinsic noise in gene transcription using the linear noise approximation: An application to single cell data
Creators: name: Finkenstädt, Bärbel
name: Woodcock, Dan J.
name: Komorowski, Michal
name: Harper, Claire V.
name: Davis, Julian R. E.
name: White, Mike R. H.
name: Rand, David A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Applications (stat.AP)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: A central challenge in computational modeling of dynamic biological systems is parameter inference from experimental time course measurements. However, one would not only like to infer kinetic parameters but also study their variability from cell to cell. Here we focus on the case where single-cell fluorescent protein imaging time series data are available for a population of cells. Based on van Kampen's linear noise approximation, we derive a dynamic state space model for molecular populations which is then extended to a hierarchical model. This model has potential to address the sources of variability relevant to single-cell data, namely, intrinsic noise due to the stochastic nature of the birth and death processes involved in reactions and extrinsic noise arising from the cell-to-cell variation of kinetic parameters. In order to infer such a model from experimental data, one must also quantify the measurement process where one has to allow for nonmeasurable molecular species as well as measurement noise of unknown level and variance. The availability of multiple single-cell time series data here provides a unique testbed to fit such a model and quantify these different sources of variation from experimental data.
description: Published in at http://dx.doi.org/10.1214/13-AOAS669 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
General analytical framework for cooperative sensing and access trade-off optimization
Creators: name: Tan, Le Thanh
name: Le, Long Bao
Publisher: name: arXiv
Year: 2014
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In this paper, we investigate the joint cooperative spectrum sensing and access design problem for multi-channel cognitive radio networks. A general heterogeneous setting is considered where the probabilities that different channels are available, SNRs of the signals received at secondary users (SUs) due to transmissions from primary users (PUs) for different users and channels can be different. We assume a cooperative sensing strategy with a general a-out-of-b aggregation rule and design a synchronized MAC protocol so that SUs can exploit available channels. We analyze the sensing performance and the throughput achieved by the joint sensing and access design. Based on this analysis, we develop algorithms to find optimal parameters for the sensing and access protocols and to determine channel assignment for SUs to maximize the system throughput. Finally, numerical results are presented to verify the effectiveness of our design and demonstrate the relative performance of our proposed algorithms and the optimal ones.
description: arXiv admin note: text overlap with arXiv:1404.1675
Standard YH System: Elaborated example of misuse of position for Manipulation to cover up the lack of knowledge
Creators: name: Övün, Kubilay Bora
Publisher: name: Zenodo
Year: 2023

description: All rights reserved: Kubilay Bora Övün the YH system is used in its standard version to elaborate on a case example - fictive or not - the abuse of position. An algorithm is also explained which can be used to analyze similar patterns by the YH system made. MY AI or CI (creational intelligence) would learn directly from me though and the things I prepare primarily.
 more of the negative aspects of my YH system are used to elaborate the issues and manipulations used. Also counter techniques are explained on how they could be used partially not all of it elaborated here in this version, which is made open access. But all rights are reserved.
Transient Temperature Distribution and Thermo-Elastic Stress in Gun Tubes
Creators: name: Cooper, Alexander R
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: Computational methods in fluid flow, heat and mass transfer (incl. computational fluid dynamics)

description: The objective of this thesis is to predict the transient temperature distribution and thermo-elastic stress in gun tubes. Necessary background about the design of gun tubes and the corresponding constraints and physical phenomena is discussed; general theories of heat transfer in gun tubes and test reports on the specific weapon systems are considered in this thesis. A modeling and simulation method is developed and implemented using commercially available ballistics software and ANSYS FEA simulation software. The capability of predicting the transient temperature distribution of an AR–15 rifle is validated by four experiments with different firing schedules. For these experiments, an FLIR E8-XT thermal camera is used to record temperatures. The predicted model is validated by comparing simulated thermo-elastic stresses in an M4A1 Carbine barrel with the tested data published in the literature. Overall, the percent error of experimented and simulated temperatures is less than 10%; while the error increases as the number of cartridges fired increases. The maximum percent error occurring to the AR–15 barrel is 12.3% at 0.2032 meters. This suggests that the effect of heat transferred from the gas port should not be neglected. The simulated rupture of the M4A1 Carbine barrel occurs at 548 rounds, 0.092 meters from the breech, at a temperature of 1090 K. The resulting percent errors from published experiments are 7.4% in the number of rounds until failure and 9.7% in location and temperature at failure. Additional simulations have been performed to provide insight into the effects of cyclic rate of fire and cooling time between bursts on the temperature distribution of an M4A1 Carbine barrel. The simulation results suggest that the cooling time between bursts has a greater impact on the barrel’s temperature distribution.
Magnetic properties of ferromagnetic Pu2Pt3Si5
Creators: name: Griveau, J. -C.
name: Colineau, E.
name: Bouëxiere, D.
name: Gofryk, K.
name: Klimczuk, T.
name: Rebizant, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The structural, magnetic, and thermodynamic properties of a new plutonium based compound, Pu2Pt3Si5, are reported. Single crystals produced by a Sn-flux technique have been analyzed showing a ferromagnetic behavior at 58 K. Pu2Pt3Si5 crystallizes in the U2Co3Si5-type orthorhombic Iabm structure (72) with atomic parameters a = 9.9226(2) Å, b = 11.4436(2) Åand c = 6.0148(1) Å. The effective (μ_eff ~0.74 μ_B) and saturated (μ_sat ~0.32 B/Pu) moments as well as the Sommerfeld coefficient (γ_e ~2 mJ.mol-1.K-2/Pu) could point towards 5f localization in this material.
Vibrational coupling to quasi-bound states in the continuum under tailored coupling conditions
Creators: name: Watanabe, Keisuke
name: Devi, Hemam Rachna
name: Iwanaga, Masanobu
name: Nagao, Tadaaki
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Photonic resonance modes can be spectrally coupled to the vibrational modes of molecules in the mid-infrared regime through interactions between localized electric fields and nearby molecules. According to recent studies, radiative loss engineering of coupled systems is a promising approach for tailoring coupling conditions and enhancing the molecular signals. However, this strategy has only been realized using the localized surface plasmon resonances of metal nanostructures, which suffer from increased ohmic loss in the mid-infrared region and face serious limitations in achieving high quality (Q) factors. In this study, we adopt silicon-based metasurfaces formed on silicon-on-insulator wafers to achieve high Q factors and tune the coupling conditions between the quasi-bound states in the continuum (qBICs) and molecular vibrations. The coupling between the resonance mode and polymethyl methacrylate molecules is tailored from weak to strong coupling regimes by simply changing the structural asymmetry parameter and utilizing the intrinsically high Q factors of the qBIC modes. In addition, we identify the optimal asymmetry parameter that maximizes the enhanced molecular signal, opening a route toward realizing highly sensitive surface-enhanced infrared spectroscopy using complementary metal-oxide semiconductor compatible all-dielectric materials.
description: 15 pages, 5 main figures + 3 supporting fgures
Die mukosale Barriere bei Zöliakie
Creators: name: Schumann, Michael
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2020
Subjects: subject: celiac disease
subject: coeliac disease
subject: epithelial barrier
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: In der vorliegenden Habilitation wird die Arbeit mehrerer Publikationen zusammengefasst, in deren Rahmen die transzelluläre (transzytotische Makromolekültransporte) und parazelluläre Epithelbarriere (Regulation der Tight Junctions, TJs) bei Zöliakie untersucht wurde. Dazu wurde mittels verschiedener funktioneller Experimentieransätze sowohl der transzelluläre wie auch der parazelluläre Barrieredefekt in der humanen Zöliakie-Dünndarmmukosa ex vivo quantifiziert. Dazu wurden endoskopisch gewonnene Mukosaproben in ein miniaturisiertes Ussing-Kammersystem eingesetzt und dort unter Verwendung verschiedener Fluoreszenz-markierter Gliadinpeptide und Quantifizierung mittels Reverse Phase-High Pressure Liquid-Chromatographie (RP-HPLC) bzw. mittels konfokaler Mikroskopie untersucht. Dabei zeigte sich eine deutlich erhöhte intestinale Gliadinpeptid-Transzytose in der Mukosa von Zöliakie-Betroffenen. Komplementiert wurden die Arbeit durch Experimente an intestinalen Epithelzellen, die Rab-GTPase-GFP-Fusionsproteine exprimierten und aufzeigten wie die Aufnahme der Gliadinpeptide durch apikale Endosomen als auch die nachfolgende Degradation der Peptide funktioniert. Auch zur Darstellung der parazellulären epithelialen Barriere wurden endoskopisch gewonnene Dünndarmmukosaproben von Zöliakie-Betroffenen in Ussing-Kammern eingespannt, dann jedoch mittels der Ein-Wege-Impedanzanalyse und der Mannitol-Flux-Bestimmung vermessen. Die Messungen zeigten einen parazellulären Barrieredefekt des Dünndarmepithels an. Es ergab sich ferner eine komplexe Ursache dieses Epitheldefekts: Zum einen war die Zahl epithelialer Einzelzellapoptosen signifikant erhöht. Zum anderen war die TJ-Proteinzusammensetzung verändert, i.S. zeigten sich Expressionsminderungen mehrerer abdichtender Claudine und Expressionsanstieg zweier Poren-bildender Claudine (Cldn2 und Cldn15). Ursache dieser komplexen molekularen Veränderung der TJ war ein Polaritätsdefekt. Das Polaritätsprotein Par-3 ist Bestandteil eines Proteinkomplexes, der im Rahmen der Ausbildung der epithelialen Polarität die dafür wichtige Assemblierung der TJ orchestriert. Dieses Protein wies in ex vivo-Studien an Dünndarmschleimhäuten von Zöliakie-Betroffenen eine deutlich veränderte Morphologie auf, die in Zellkulturstudien auch funktionell mit durch Inflammation verursachten TJ-Defekten assoziierbar war. Somit ergab sich das Bild einer durch proinflammatorische Zytokine verursachten Veränderung der epithelialen Polarität, die nachfolgend den Aufbau der TJ so verändert, dass daraus eine erhöhte parazelluläre Permeabilität resultiert.
Comments on the role of field redefinition on renormalisation of $N=\frac{1}{2}$ supersymmetric pure gauge theory
Creators: name: Kord, A. F.
name: Moghaddam, M. Haddadi
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study one loop corrections to $N=\frac{1}{2}$ supersymmetric $SU(N)\times U(1)$ pure gauge theory. We calculate divergent contributions of the 1PI graphs contain the non-anti-commutative parameter $C$ up to one loop corrections. We find the disagreement between component formalism and superspace formalism is because of the field redefinition in component case. We modify gaugino field redefinition and lagrangian. We show extra terms of lagrangian have been generated by $λ$ redefinition and are necessary for the renormalisation of the theory. Finally we prove $N = \frac{1}{2}$ supersymmetric gauge theory is renormalisable up one loop corrections using standard method of renormalisation
Scattering of relativistic electrons and analogies with optical phenomena: A study of longitudinal and transverse shifts at step potentials
Creators: name: Ban, Yue
name: Chen, Xi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the behavior of relativistic electrons encountering a potential step through analogies with optical phenomena. By accounting for the conservation of Dirac current, we elucidate that the Goos-Hänchen shift can be understood as a combination of two components: one arising from the current entering the transmission region and the other originating from the interference between the incident and reflected beams. This result has been proven to be consistent with findings obtained utilizing the stationary phase method. Moreover, we explore the transverse Imbert-Fedorov shift, by applying both current conservation and total angular momentum conservation, revealing intriguing parallel to the spin Hall effect. Beyond enriching our comprehension of fundamental quantum phenomena, our findings have potential applications for designing and characterizing devices using Dirac and topological materials.
description: 9 pages, 4 figures
The Performance and Long Term Stability of the D0 Run II Forward Muon Scintillation Counters
Creators: name: Bezzubov, V.
name: Denisov, D.
name: Evdokimov, V.
name: Lipaev, V.
name: Shchukin, A.
name: Vasilyev, I.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The performance of the D0 experiment forward muon scintillation counters system during Run II of the Tevatron from 2001 to 2011 is described. The system consists of 4214 scintillation counters in six layers. The long term stability of the counters amplitude response determined using LED calibration system and muons produced in proton-antiproton collisions is presented. The average signal amplitude for counters of all layers has gradually decreased over ten years by 11%. The reference timing, determined using LED calibration, was stable within 0.26 ns. Average value of muon timing peak position was used for periodic D0 clock signal adjustments to compensate seasonal drift caused by temperature variations. Counters occupancy for different triggers in physics data collection runs and for minimum bias triggers are presented. The single muon yields versus time and the luminosity dependence of yields were stable for the forward muon system within 1% over 10 years.
description: 17 pages, 19 figures, submitted to Nuclear Instruments and Methods in Physics Research Section A
title: Syntactic architecture and its consequences I
title: Syntax inside the grammar
titleType: Subtitle
Creators: name: (:Unkn) Unknown
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: Syntactic architecture
subject: Syntax
subject: grammar
subject: 400 Sprache::410 Linguistik::410 Linguistik

description: This volume collects novel contributions to comparative generative linguistics that “rethink” existing approaches to an extensive range of phenomena, domains, and architectural questions in linguistic theory. At the heart of the contributions is the tension between descriptive and explanatory adequacy which has long animated generative linguistics and which continues to grow thanks to the increasing amount and diversity of data available to us. The chapters address research questions on the relation of syntax to other aspects of grammar and linguistics more generally, including studies on language acquisition, variation and change, and syntactic interfaces. Many of these contributions show the influence of research by Ian Roberts and collaborators and give the reader a sense of the lively nature of current discussion of topics in synchronic and diachronic comparative syntax ranging from the core verbal domain to higher, propositional domains.
Elicitation and Modeling Non-Functional Requirements - A POS Case Study
Creators: name: Rahman, Md. Mijanur
name: Ripon, Shamim
Publisher: name: arXiv
Year: 2014
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Proper management of requirements is crucial to successful development software within limited time and cost. Nonfunctional requirements (NFR) are one of the key criteria to derive a comparison among various software systems. In most of software development NFR have be specified as an additional requirement of software. NFRs such as performance, reliability, maintainability, security, accuracy etc. have to be considered at the early stage of software development as functional requirement (FR). However, identifying NFR is not an easy task. Although there are well developed techniques for eliciting functional requirement, there is a lack of elicitation mechanism for NFR and there is no proper consensus regarding NFR elicitation techniques. Eliciting NFRs are considered to be one of the challenging jobs in requirement analysis. This paper proposes a UML use case based questionary approach to identifying and classifying NFR of a system. The proposed approach is illustrated by using a Point of Sale (POS) case study
description: 5 pages, 5 figures
Toward a Better Understanding of Loss Functions for Collaborative Filtering
Creators: name: Park, Seongmin
name: Yoon, Mincheol
name: Lee, Jae-woong
name: Park, Hogun
name: Lee, Jongwuk
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Retrieval (cs.IR)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Collaborative filtering (CF) is a pivotal technique in modern recommender systems. The learning process of CF models typically consists of three components: interaction encoder, loss function, and negative sampling. Although many existing studies have proposed various CF models to design sophisticated interaction encoders, recent work shows that simply reformulating the loss functions can achieve significant performance gains. This paper delves into analyzing the relationship among existing loss functions. Our mathematical analysis reveals that the previous loss functions can be interpreted as alignment and uniformity functions: (i) the alignment matches user and item representations, and (ii) the uniformity disperses user and item distributions. Inspired by this analysis, we propose a novel loss function that improves the design of alignment and uniformity considering the unique patterns of datasets called Margin-aware Alignment and Weighted Uniformity (MAWU). The key novelty of MAWU is two-fold: (i) margin-aware alignment (MA) mitigates user/item-specific popularity biases, and (ii) weighted uniformity (WU) adjusts the significance between user and item uniformities to reflect the inherent characteristics of datasets. Extensive experimental results show that MF and LightGCN equipped with MAWU are comparable or superior to state-of-the-art CF models with various loss functions on three public datasets.
description: Accepted by CIKM 2023
Rural Homeowners' Use of Home Mortgage Credit in the Ozark Region, 1966
Creators: name: Spurlock, Hughes H.
name: Spurlock, Hughes H.
Publisher: name: Unknown
Year: 1971
Subjects: subject: Consumer/Household Economics
subject: Financial Economics
subject: Credit
subject: credit institutions
subject: home mortgages
subject: loans
subject: rural housing
subject: Arkansas
subject: Missouri
subject: Oklahoma

description: Of the sample of rural homeowners in the Ozark Region in 1966, less than half had ever mortgaged their property. However, those who had mortgaged occupied significantly higher quality housing than those who had not. The trend in the region is toward greater use of credit to finance home purchases. The study strongly indicates that rural home buyers have limited access to long-term, low-equity, amortized loans. Most loans were made by local banks, individuals, and a wide assortment of minor lenders; rural lending activity of savings and loan associations and life insurance companies was limited. Very little evidence was found that conventional lenders bring about inflows of home mortgage credit by initiating Government-backed mortgages for sale to Government agencies or major purchasers of home mortgages. Half of all loans were for less than $5,500. The higher the income and the more years of schooling a household head had the more likely he was to obtain a desirable type of home mortgage credit loan. Age of household head also affected desire and ability to get credit.
Comment on 'Single-slit electron diffraction with Aharonov-Bohm phase: Feynman's thought experiment with quantum point contacts'
Creators: name: Tiwari, S C
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We comment on the paper published in PRL 112, 010403 (2014).
description: Submitted to PRL
title: Basic psychological need satisfaction and frustration in major depressive disorder
Creators: name: Pietrek, Anou
name: Kangas, Maria
name: Kliegl, Reinhold
name: Rapp, Michael Armin
name: Heinzel, Stephan
name: Van der Kaap-Deeder, Jolene
name: Heissel, Andreas
Publisher: name: Universitätsverlag Potsdam
Year: 2023
Subjects: subject: 610 Medizin und Gesundheit

description: Basic psychological needs theory postulates that a social environment that satisfies individuals’ three basic psychological needs of autonomy, competence, and relatedness leads to optimal growth and well-being. On the other hand, the frustration of these needs is associated with ill-being and depressive symptoms foremost investigated in non-clinical samples; yet, there is a paucity of research on need frustration in clinical samples. Survey data were compared between adult individuals with major depressive disorder (MDD; n = 115; 48.69% female; 38.46 years, SD = 10.46) with those of a non-depressed comparison sample (n = 201; 53.23% female; 30.16 years, SD = 12.81). Need profiles were examined with a linear mixed model (LMM). Individuals with depression reported higher levels of frustration and lower levels of satisfaction in relation to the three basic psychological needs when compared to non-depressed adults. The difference between depressed and non-depressed groups was significantly larger for frustration than satisfaction regarding the needs for relatedness and competence. LMM correlation parameters confirmed the expected positive correlation between the three needs. This is the first study showing substantial differences in need-based experiences between depressed and non-depressed adults. The results confirm basic assumptions of the self-determination theory and have preliminary implications in tailoring therapy for depression.
description: Zweitveröffentlichungen der Universität Potsdam : Gesundheitswissenschaftliche Reihe; 8
Extraction of Core Contents from Web Pages
Creators: name: Sirsat, Sandeep
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: The information available on web pages mostly contains semi-structured text documents which are represented either in XML, or HTML, or XHTML format that lacks formatted document structure. The document does not discriminate between the text and the schema that represent the text. Also the amount of structure used to represent the text depends on the purpose and size of text document. No semantic is applied to semi-structured documents. This requires extracting core contents of text document to analyse words or sentences to generate useful knowledge. This paper discusses several techniques and approaches useful for extracting core content from semi-structured text documents and their merits and demerits
description: 6 Pages, 3 Figures, 11 references. arXiv admin note: text overlap with arXiv:1207.0246 by other authors without attribution
Two-dimensional electron hydrodynamics in a random array of impenetrable obstacles: Magnetoresistivity, Hall viscosity, and the Landauer dipole
Creators: name: Gornyi, I. V.
name: Polyakov, D. G.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We formulate a general framework to study the flow of the electron liquid in two dimensions past a random array of impenetrable obstacles in the presence of a magnetic field. We derive a linear-response formula for the resistivity tensor $\hatρ$ in hydrodynamics with obstacles, which expresses $\hatρ$ in terms of the vorticity and its harmonic conjugate, both on the boundary of obstacles. In the limit of rare obstacles, in which we calculate $\hatρ$, the contributions of the flow-induced electric field to the dissipative resistivity from the area covered by the liquid and the area inside obstacles are shown to be equal to each other. We demonstrate that the averaged electric fields outside and inside obstacles are rotated by Hall viscosity from the direction of flow. For the diffusive boundary condition on the obstacles, this effect exactly cancels in $\hatρ$. By contrast, for the specular boundary condition, the total electric field is rotated by Hall viscosity, which means the emergence of a Hall-viscosity-induced effective -- proportional to the obstacle density -- magnetic field. Its effect on the Hall resistivity is particularly notable in that it leads to a deviation of the Hall constant from its universal value. We show that the applied magnetic field enhances hydrodynamic lubrication, giving rise to a strong negative magnetoresistance. We combine the hydrodynamic and electrostatic perspectives by discussing the distribution of charges that create the flow-induced electric field around obstacles. We provide a connection between the tensor $\hatρ$ and the disorder-averaged electric dipole induced by viscosity at the obstacle. This establishes a conceptual link between the resistivity in hydrodynamics with obstacles and the notion of the Landauer dipole. We show that the viscosity-induced dipole is rotated from the direction of flow by Hall viscosity.
description: 30 pages
A Time-aware tensor decomposition for tracking evolving patterns
Creators: name: Chatzis, Christos
name: Pfeffer, Max
name: Lind, Pedro
name: Acar, Evrim
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Time-evolving data sets can often be arranged as a higher-order tensor with one of the modes being the time mode. While tensor factorizations have been successfully used to capture the underlying patterns in such higher-order data sets, the temporal aspect is often ignored, allowing for the reordering of time points. In recent studies, temporal regularizers are incorporated in the time mode to tackle this issue. Nevertheless, existing approaches still do not allow underlying patterns to change in time (e.g., spatial changes in the brain, contextual changes in topics). In this paper, we propose temporal PARAFAC2 (tPARAFAC2): a PARAFAC2-based tensor factorization method with temporal regularization to extract gradually evolving patterns from temporal data. Through extensive experiments on synthetic data, we demonstrate that tPARAFAC2 can capture the underlying evolving patterns accurately performing better than PARAFAC2 and coupled matrix factorization with temporal smoothness regularization.
description: 6 pages, 5 figures
Radiative Capture of Twisted Electrons by Bare Ions
Creators: name: Matula, Oliver
name: Hayrapetyan, Armen G.
name: Serbo, Valeriy G.
name: Surzhykov, Andrey
name: Fritzsche, Stephan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Recent advances in the production of twisted electron beams with a subnanometer spot size offer unique opportunities to explore the role of orbital angular momentum (OAM) in basic atomic processes. In the present work, we address one of these processes: radiative recombination of twisted electrons with bare ions. Based on the density matrix formalism and the non-relativistic Schrödinger theory, analytical expressions are derived for the angular distribution and the linear polarization of photons emitted due to the capture of twisted electrons into the ground state of (hydrogen-like) ions. We show that these angular and polarization distributions are sensitive to both, the transverse momentum and the topological charge of the electron beam. To observe in particular the value of this charge, we propose an experiment that makes use of the coherent superposition of two twisted beams.
description: 5 pages, 3 figures
Vortex detection in atomic Bose-Einstein condensates using neural networks trained on synthetic images
Creators: name: Kim, Myeonghyeon
name: Kwon, Junhwan
name: Rabga, Tenzin
name: Shin, Yong-il
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Quantum vortices in atomic Bose-Einstein condensates (BECs) are topological defects characterized by quantized circulation of particles around them. In experimental studies, vortices are commonly detected by time-of-flight imaging, where their density-depleted cores are enlarged. In this work, we describe a machine learning-based method for detecting vortices in experimental BEC images, particularly focusing on turbulent condensates containing irregularly distributed vortices. Our approach employs a convolutional neural network (CNN) trained solely on synthetic simulated images, eliminating the need for manual labeling of the vortex positions as ground truth. We find that the CNN achieves accurate vortex detection in real experimental images, thereby facilitating analysis of large experimental datasets without being constrained by specific experimental conditions. This novel approach represents a significant advancement in studying quantum vortex dynamics and streamlines the analysis process in the investigation of turbulent BECs.
description: 10 pages, 6 figures
Cabibbo angle anomalies and a global fit to vector-like quarks
Creators: name: Kirk, Matthew
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The most recent determinations of $V_{ud}$ from superallowed beta decays lead to a discrepancy when compared to the value implied by mesonic CKM measurements combined with CKM unitarity. On top of this, improved precision in lattice QCD calculations have revealed another discrepancy between the $V_{us}$ determinations from kaon and pion semi-leptonic decays. The combination of these can be referred to as the Cabibbo angle anomaly, which we find has a significance of around $3\,σ$. After summarising the current state of these issues, I will talk about new physics models that modify semi-leptonic decays as potential explanations, and why vector-like quarks in particular appear the most promising candidates. I will then discuss the results of a global fit to various vector-like quark models, and how other constraints are important in determining the most likely explanation. Finally I will touch on future experiments that could shed further light on the situation.
description: Prepared for the FPCP 2023 proceedings (v2: added reference, v3: explained acronyms, corrected "SU2 singlet Q" -> "SU2 doublet Q")
Full-Duplex Cloud Radio Access Networks: An Information-Theoretic Viewpoint
Creators: name: Simeone, O.
name: Erkip, E.
name: Shamai, S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: The conventional design of cellular systems prescribes the separation of uplink and downlink transmissions via time-division or frequency-division duplex. Recent advances in analog and digital domain self-interference interference cancellation challenge the need for this arrangement and open up the possibility to operate base stations, especially low-power ones, in a full-duplex mode. As a means to cope with the resulting downlink-to-uplink interference among base stations, this letter investigates the impact of the Cloud Radio Access Network (C-RAN) architecture. The analysis follows an information theoretic approach based on the classical Wyner model. The analytical results herein confirm the significant potential advantages of the C-RAN architecture in the presence of full-duplex base stations, as long as sufficient fronthaul capacity is available and appropriate mobile station scheduling, or successive interference cancellation at the mobile stations, is implemented.
description: To appear in IEEE Wireless Communications Letters
Self-duality for $\cal N$-extended superconformal gauge multiplets
Creators: name: Kuzenko, Sergei M.
name: Raptakis, Emmanouil S. N.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We develop a general formalism of duality rotations for $\cal N$-extended superconformal gauge multiplets in conformally flat backgrounds as an extension of the approach given in arXiv:2107.02001. Additionally, we construct $\mathsf{U}(1)$ duality-invariant models for the ${\mathcal N}=2$ superconformal gravitino multiplet recently described in arXiv:2305.16029. Each of them is automatically self-dual with respect to a superfield Legendre transformation. A method is proposed to generate such self-dual models, including a family of superconformal theories.
description: 25 pages; V2: published version
Matrix-free Large Scale Bayesian inference in cosmology
Creators: name: Jasche, Jens
name: Lavaux, Guilhem
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: In this work we propose a new matrix-free implementation of the Wiener sampler which is traditionally applied to high dimensional analysis when signal covariances are unknown. Specifically, the proposed method addresses the problem of jointly inferring a high dimensional signal and its corresponding covariance matrix from a set of observations. Our method implements a Gibbs sampling adaptation of the previously presented messenger approach, permitting to cast the complex multivariate inference problem into a sequence of uni-variate random processes. In this fashion, the traditional requirement of inverting high dimensional matrices is completely eliminated from the inference process, resulting in an efficient algorithm that is trivial to implement. Using cosmic large scale structure data as a showcase, we demonstrate the capabilities of our Gibbs sampling approach by performing a joint analysis of three dimensional density fields and corresponding power-spectra from Gaussian mock catalogues. These tests clearly demonstrate the ability of the algorithm to accurately provide measurements of the three dimensional density field and its power-spectrum and corresponding uncertainty quantification. Moreover, these tests reveal excellent numerical and statistical efficiency which will generally render the proposed algorithm a valuable addition to the toolbox of large scale Bayesian inference in cosmology and astrophysics.
description: 9 pages, 2 figures, submitted to MNRAS
Numerical-analytical investigation into impact pipe driving in soil with dry friction. Part II: Deformable external medium
Creators: name: Aleksandrova, Nadezhda
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: Classical Physics (physics.class-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 74B05, 74C99, 74H10

description: Under analysis is travel of P-waves in an elastic pipe partly embedded in soil with dry friction. The mathematical formulation of the problem on impact pipe driving in soil is based on the model of axial vibration of an elastic bar, considering lateral resistance described using the law of solid dry friction. The author solves problems on axial load on pipe in interaction with external elastic medium, and compares the analytical and numerical results obtained with and without accounting for the external medium deformability.
description: 14 pages, 10 figures