cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Overview of the CLEF-2019 CheckThat!: Automatic Identification and Verification of Claims
Creators: name: Elsayed, Tamer
name: Nakov, Preslav
name: Barrón-Cedeño, Alberto
name: Hasanain, Maram
name: Suwaileh, Reem
name: Martino, Giovanni Da San
name: Atanasova, Pepa
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences
subject: F.2.2; I.2.7
subject: 68T50

description: We present an overview of the second edition of the CheckThat! Lab at CLEF 2019. The lab featured two tasks in two different languages: English and Arabic. Task 1 (English) challenged the participating systems to predict which claims in a political debate or speech should be prioritized for fact-checking. Task 2 (Arabic) asked to (A) rank a given set of Web pages with respect to a check-worthy claim based on their usefulness for fact-checking that claim, (B) classify these same Web pages according to their degree of usefulness for fact-checking the target claim, (C) identify useful passages from these pages, and (D) use the useful pages to predict the claim's factuality. CheckThat! provided a full evaluation framework, consisting of data in English (derived from fact-checking sources) and Arabic (gathered and annotated from scratch) and evaluation based on mean average precision (MAP) and normalized discounted cumulative gain (nDCG) for ranking, and F1 for classification. A total of 47 teams registered to participate in this lab, and fourteen of them actually submitted runs (compared to nine last year). The evaluation results show that the most successful approaches to Task 1 used various neural networks and logistic regression. As for Task 2, learning-to-rank was used by the highest scoring runs for subtask A, while different classifiers were used in the other subtasks. We release to the research community all datasets from the lab as well as the evaluation scripts, which should enable further research in the important tasks of check-worthiness estimation and automatic claim verification.
description: Check-worthiness Estimation, Fact-Checking, Veracity, Evidence-based Verification, Fake News Detection, Computational Journalism, Disinformation, Misinformation. arXiv admin note: text overlap with arXiv:2012.09263 by other authors
Improved statistical machine translation using monolingual paraphrases
Creators: name: Nakov, Preslav
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: F.2.2; I.2.7
subject: 68T50

description: We propose a novel monolingual sentence paraphrasing method for augmenting the training data for statistical machine translation systems "for free" -- by creating it from data that is already available rather than having to create more aligned data. Starting with a syntactic tree, we recursively generate new sentence variants where noun compounds are paraphrased using suitable prepositions, and vice-versa -- preposition-containing noun phrases are turned into noun compounds. The evaluation shows an improvement equivalent to 33%-50% of that of doubling the amount of training data.
description: machine translation, SMT, paraphrasing, data augmentation. arXiv admin note: substantial text overlap with arXiv:1912.01113
TA'LIMDA KOMPETENSIYAVIY YONDOSHUVNING NAZARIY ASOSLARI
Creators: name: Xamidova, D.M.
name: Annayev, A.B.
Publisher: name: Zenodo
Year: 2023

description: Maqolada professional ta’lim muassasalarida mutaxassislar tayyorlashda kompetensiyaga asoslangan yondashuvdan foydalanish tamoyillarini tizimlashtirish ko‘zda tutilgan. Kompetensiyaviy yondashuvga asoslangan ta’lim o’quvchilarni o’zlashtirilgan axborotlarni o’quv va hayotiy faoliyat turlarining standart va nostandart vaziyatlarida qo’llay olishga tayyorlashi bilan farqlanadi.
SUper Team at SemEval-2016 Task 3: Building a feature-rich system for community question answering
Creators: name: Mihaylova, Tsvetomila
name: Gencheva, Pepa
name: Boyanov, Martin
name: Yovcheva, Ivana
name: Mihaylov, Todor
name: Hardalov, Momchil
name: Kiprov, Yasen
name: Balchev, Daniel
name: Koychev, Ivan
name: Nakov, Preslav
name: Nikolova, Ivelina
name: Angelova, Galia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences
subject: F.2.2; I.2.7
subject: 68T50

description: We present the system we built for participating in SemEval-2016 Task 3 on Community Question Answering. We achieved the best results on subtask C, and strong results on subtasks A and B, by combining a rich set of various types of features: semantic, lexical, metadata, and user-related. The most important group turned out to be the metadata for the question and for the comment, semantic vectors trained on QatarLiving data and similarities between the question and the comment for subtasks A and C, and between the original and the related question for Subtask B.
description: community question answering, question-question similarity, question-comment similarity, answer reranking
New Insights on Time-Symmetry in Quantum Mechanics
Creators: name: Aharonov, Yakir
name: Tollaksen, Jeff
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A review of new aspects concerning time-symmetry in Quantum Mechanics.
Direct X-ray Spectral Deprojection of Galaxy Clusters
Creators: name: Russell, H. R.
name: Sanders, J. S.
name: Fabian, A. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Temperature, density and abundance profiles of the hot intracluster medium (ICM) are important diagnostics of the complex interactions of gravitational and feedback processes in the cores of galaxy clusters. Deprojection of X-ray data by methods such as projct, which are model dependent, can produce large and unphysical oscillating temperature profiles. Here we validate a deprojection routine, Direct Spectral Deprojection (DSDeproj; Sanders & Fabian 2007), showing that it solves some of the issues inherent to model-dependent deprojection routines. DSDeproj is a model-independent approach, assuming only spherical symmetry, which subtracts projected spectra from each successive annulus to produce a set of deprojected spectra.
description: 11 pages, 18 figures, accepted for publication in MNRAS
Galaxy Zoo: the dependence of morphology and colour on environment
Creators: name: Bamford, Steven P.
name: Nichol, Robert C.
name: Baldry, Ivan K.
name: Land, Kate
name: Lintott, Chris J.
name: Schawinski, Kevin
name: Slosar, Anze
name: Szalay, Alexander S.
name: Thomas, Daniel
name: Torki, Mehri
name: Andreescu, Dan
name: Edmondson, Edward M.
name: Miller, Christopher J.
name: Murray, Phil
name: Raddick, M. Jordan
name: Vandenberg, Jan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyse the relationships between galaxy morphology, colour, environment and stellar mass using data for over 100,000 objects from Galaxy Zoo, the largest sample of visually classified morphologies yet compiled. We conclusively show that colour and morphology fractions are very different functions of environment. Both are sensitive to stellar mass; however, at fixed stellar mass, while colour is also highly sensitive to environment, morphology displays much weaker environmental trends. Only a small part of both relations can be attributed to variation in the stellar mass function with environment. Galaxies with high stellar masses are mostly red, in all environments and irrespective of their morphology. Low stellar-mass galaxies are mostly blue in low-density environments, but mostly red in high-density environments, again irrespective of their morphology. The colour-density relation is primarily driven by variations in colour fractions at fixed morphology, in particular the fraction of spiral galaxies that have red colours, and especially at low stellar masses. We demonstrate that our red spirals primarily include galaxies with true spiral morphology. We clearly show there is an environmental dependence for colour beyond that for morphology. Before using the Galaxy Zoo morphologies to produce the above results, we first quantify a luminosity-, size- and redshift-dependent classification bias that affects this dataset, and probably most other studies of galaxy population morphology. A correction for this bias is derived and applied to produce a sample of galaxies with reliable morphological type likelihoods, on which we base our analysis.
description: 25 pages, 20 figures (+ 6 pages, 11 figures in appendices); moderately revised following referee's comments; accepted by MNRAS
IMPROVING TIMELY ACCESS TO CARE IN A COMMUNITY HEALTH CLINIC
Creators: name: Canales, Rosemary
Publisher: name: Zenodo
Year: 2020

description: The ability of patients to consistently schedule appointments in a timely manner with their primary care provider (PCP) is a common problem plaguing many primary care offices within the United States (US). Timely access and continuity of care with the PCP has been associated with better health outcomes, longevity, and decreased healthcare costs. This business plan will propose a budget for a new federally qualified health center (FQHC) location outside of Albuquerque, New Mexico. The Six-Sigma quality improvement process will be used to design a new provider scheduling template to try to improve timely access and continuity of care with a PCP. Proposed measures and the recommended control charts used for monitoring the quality improvement process were identified and the rationale for their use discussed. Recommendations for future quality improvement projects regarding timely access and continuity of care will also be made.
NMR Study of Large Skyrmions in Al_{0.13}Ga_{0.87}As Quantum Wells
Creators: name: Mitrović, V. F.
name: Horvatić, M.
name: Berthier, C.
name: Lyon, S. A.
name: Shayegan, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A nuclear magnetic resonance (NMR) study is reported of multiple (30) Al$_{0.13}$Ga$_{0.87}$As quantum well (QW) sample near the Landau level filling factor $ν=1$. In these Al$_{0.13}$Ga$_{0.87}$As QWs the effective $g$ factor is nearly zero. This can lead to two effects: vanishing electronic polarization $(P)$ and skyrmionic excitations composed of a huge number of spins. As small $P$ values cause an overlap of the NMR signals from the QW and barriers, a special technique was employed to allow these two signals to be distinguished. The QW signal corresponds to a small, negative, and very broad distribution of spin polarization that exhibits thermally induced depolarization. Such a distribution can be attributed to sample inhomogeneities and/or to large skyrmions, the latter possibility being favored by observation of a very fast $T_{2}^{-1}$ rate.
description: to appear in PRB
Programme International Conference on Scientometrics and Bibliometrics (with abstracts)
Creators: name: State Scientific And Technical Library Of Ukraine
Publisher: name: Zenodo
Year: 2019
Subjects: conference
scientometrics
research assessment
Open Access

description: Програма Міжнародної конференції з наукометрії та бібліометрії (із анотаціями виступів), 4 червня 2019 р., м. Київ, Україна.

Організатор: Державна науково-технічна бібліотека України. Конференція організована під егідою та за підтримки Міністерства освіти і науки України, а також за партнерства Clarivate Analytics.

Тема конференції: оцінка наукових досліджень: методи, проблеми, перспективи. Ключовий спікер - Людо Вальтман (Ludo Waltman), заступник директора Центру дослідження науки і техніки Лейденського університетут (Нідерланди).

Міжнародна конференція з наукометрії та бібліометрії  SBC Kyiv 2019 – це міжнародний відкритий форум науковців, управлінців, представників влади, бібліотекарів та інформаційних фахівців для обговорення актуальних теоретичних і прикладних досягнень щодо коректного застосування наукометрії в процесі проведення оцінки впливовості наукових досліджень у галузях природничих, соціальних і гуманітарних наук.
Universes out of almost empty space
Creators: name: Ansoldi, Stefano
name: Guendelman, Eduardo I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Baby universes (inflationary or non--inflationary) are regions of spacetime that disconnect from the original ambient spacetime, which we take to be asymptotically flat spacetime. A particular kind of baby universe solution, involving string--like matter, is studied to show that it can be formed by ``investing'' an arbitrarily small amount of energy, i.e. it can appear from an almost flat space at the classical level. Since this possibility has not yet been clearly recognized in the literature, we then discuss in detail its properties, relevance and possible generalizations.
description: LaTeX (RevTeX), 4 pages, 1 figure. A few typos corrected and some references added; structure streamlined (changes reflected in a slightly modified abstract); small, non-substantial modifications in the figure
Dilution effect in correlated electron system with orbital degeneracy
Creators: name: Tanaka, Takayoshi
name: Ishihara, Sumio
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Theory of dilution effect in orbital ordered system is presented. The $e_g$ orbital model without spin degree of freedom and the spin-orbital coupled model in a three-dimensional simple-cubic lattice are analyzed by the Monte-Carlo simulation and the cluster expansion method. In the $e_g$ orbital model without spin degree of freedom, reduction of the orbital ordering temperature due to dilution is steeper than that in the dilute magnet. This is attributed to a modification of the orbital wave-function around vacant sites. In the spin-orbital coupled model, it is found that magnetic structure is changed from the A-type antiferromagnetic order into the ferromagnetic one. Orbital dependent exchange interaction and a sign change of this interaction around vacant sites bring about this novel phenomena. Present results explain the recent experiments in transition-metal compounds with orbital dilution.
description: 12 pages, 16 figures
Microscopic atom optics: from wires to an atom chip
Creators: name: Folman, R.
name: Kruger, P.
name: Schmiedmayer, J.
name: Denschlag, J.
name: Henkel, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We give a comprehensive overview of the development of micro traps, from the first experiments on guiding atoms using current carrying wires in the early 1990's to the creation of a BEC on an atom chip.
description: published version can be downloaded at: http://www.atomchip.org -> Review Articles
Feature-Rich Named Entity Recognition for Bulgarian Using Conditional Random Fields
Creators: name: Georgiev, Georgi
name: Nakov, Preslav
name: Ganchev, Kuzman
name: Osenova, Petya
name: Simov, Kiril Ivanov
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: F.2.2; I.2.7
subject: 68T50

description: The paper presents a feature-rich approach to the automatic recognition and categorization of named entities (persons, organizations, locations, and miscellaneous) in news text for Bulgarian. We combine well-established features used for other languages with language-specific lexical, syntactic and morphological information. In particular, we make use of the rich tagset annotation of the BulTreeBank (680 morpho-syntactic tags), from which we derive suitable task-specific tagsets (local and nonlocal). We further add domain-specific gazetteers and additional unlabeled data, achieving F1=89.4%, which is comparable to the state-of-the-art results for English.
description: named entity recognition, NER, conditional random fields, CRF, Bulgarian, BulTreeBank
The LU-LC conjecture is false
Creators: name: Ji, Zhengfeng
name: Chen, Jianxin
name: Wei, Zhaohui
name: Ying, Mingsheng
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The LU-LC conjecture is an important open problem concerning the structure of entanglement of states described in the stabilizer formalism. It states that two local unitary equivalent stabilizer states are also local Clifford equivalent. If this conjecture were true, the local equivalence of stabilizer states would be extremely easy to characterize. Unfortunately, however, based on the recent progress made by Gross and Van den Nest, we find that the conjecture is false.
description: Added a new part explaining how the counterexamples are found
The Bioinfo4Women Programme: towards gender equity and diversity in science
Creators: name: Bioinfo4Women
Publisher: name: Zenodo
Year: 2023

description: The Bioinfo4Women programme (B4W) is a non-profit initiative of the Life Sciences department at the Barcelona Supercomputing Center (BSC) to promote the research done by women in computational biology, and it supports researchers by promoting the exchange of knowledge and experience of outstanding women researchers through activities such as seminars, conferences, training and mentorships. B4W has particular focus on the areas of personalised medicine, bioinformatics and HPC, and ultimately aims at building a more collaborative, supportive, and equal scientific community. The Programme receives the institutional support of the Life Science department of the BSC and contributes to the fulfilment of the centre’s objective of promoting the development of a scientific career in accordance with the gender equality plan developed.

The B4W programme began its activities in 2018 by organizing seminars delivered by women researchers and financially supporting three B4W fellows, women who start their careers as independent researchers outside the BSC. The strategy and organization of the programme were shaped and redefined at the beginning of 2021 around five strategic lines of action 1) Support women’s career 2) Research line on Women’s Health and AI 3) Internationalisation and Networking 4) Communications 5) Strategy, Organisation and Financial engagement. The activities and participants are autonomously organised around five working groups, aligned to the lines of action and coordinated by the executive committee. The ISCB recognised B4W as a worldwide affiliated group in 2021.

The programme is part of the ELIXIR Spain node’s activities. Its ties with the infrastructure have been strengthening with its participation in the Biohackathon 2021 and 2022 with projects about the assessment of gender/sex bias in public repositories, and the accepted staff exchange “ELIXIR LEadership And Diversity mentoring programme - ELEAD” to kick-start in 2023. The Bioinfo4Women scope and actions can contribute on the future ELIXIR Working Programme 2024-28 regarding EDI topics.
Tests of multimode quantum non-locality with homodyne measurements
Creators: name: Acín, Antonio
name: Cerf, Nicolas J.
name: Ferraro, Alessandro
name: Niset, Julien
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the violation of local realism in Bell tests involving homodyne measurements performed on multimode continuous-variable states. By binning the measurement outcomes in an appropriate way, we prove that the Mermin-Klyshko inequality can be violated by an amount that grows exponentially with the number of modes. Furthermore, the maximum violation allowed by quantum mechanics can be attained for any number of modes, albeit requiring a quantum state that is rather unrealistic. Interestingly, this exponential increase of the violation holds true even for simpler states, such as multipartite GHZ states. The resulting benefit of using more modes is shown to be significant in practical multipartite Bell tests by analyzing the increase of the robustness to noise with the number of modes. In view of the high efficiency achievable with homodyne detection, our results thus open a possible way to feasible loophole-free Bell tests that are robust to experimental imperfections. We provide an explicit example of a three-mode state (a superposition of coherent states) which results in a significantly high violation of the Mermin-Klyshko inequality (around 10%) with homodyne measurements.
description: 9 pages, 5 figures
Measurement of the lifetime of the B_c meson in the semileptonic decay channel
Creators: name: D0 Collaboration
name: Abazov, V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using approximately 1.3 fb-1 of data collected by the D0 detector between 2002 and 2006, we measure the lifetime of the B_c meson in the B_c -> J/psi mu nu X final state. A simultaneous unbinned likelihood fit to the J/ψ+mu invariant mass and lifetime distributions yields a signal of 881 +/- 80 (stat) candidates and a lifetime measurement of τ(B_c) = 0.448 +0.038 -0.036 (stat) +/- 0.032 (syst) ps.
description: 7 pages, 2 figures, submitted to Phys. Rev. Lett
A disconnect/pressure monitor
Creators: name: Campbell, Michael A.
Publisher: name: University of British Columbia
Year: 2010

description: Present methods of monitoring, anesthetic breathing circuits for mechanical faults are flawed by inadequacies in the design of disconnect/pressure monitors (DPMs), devices which monitor breathing circuit pressure waveforms. Such inadequacies are investigated, and their cause is identified. A microprocessor based DPM, which applies pattern recognition techniques to the task of disconnect monitoring is proposed, and its design and implementation are presented. Technical and clinical trials show that the prototype DPM consistently detects almost all mechanical faults in the anesthetic breathing circuit. It is concluded that pattern recognition based DPMs are significantly more effective than their present day counterparts.
Linear Differential Games for Cooperative Behavior Planning of Autonomous Vehicles Using Mixed-Integer Programming
Creators: name: Kessler, Tobias
name: Esterle, Klemens
name: Knoll, Alois
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences

description: Cooperatively planning for multiple agents has been proposed as a promising method for strategic and motion planning for automated vehicles. By taking into account the intent of every agent, the ego agent can incorporate future interactions with human-driven vehicles into its planning. The problem is often formulated as a multi-agent game and solved using iterative algorithms operating on a discretized action or state space. Even if converging to a Nash equilibrium, the result will often be only sub-optimal. In this paper, we define a linear differential game for a set of interacting agents and solve it to optimality using mixed-integer programming. A disjunctive formulation of the orientation allows us to formulate linear constraints to prevent agent-to-agent collision while preserving the non-holonomic motion properties of the vehicle model. Soft constraints account for prediction errors. We then define a joint cost function, where a cooperation factor can adapt between altruistic, cooperative, and egoistic behavior. We study the influence of the cooperation factor to solve scenarios, where interaction between the agents is necessary to solve them successfully. The approach is then evaluated in a racing scenario, where we show the applicability of the formulation in a closed-loop receding horizon replanning fashion. By accounting for inaccuracies in the cooperative assumption and the actual behavior, we can indeed successfully plan an optimal control strategy interacting closely with other agents.
description: Published at 2020 59th IEEE Conference on Decision and Control (CDC)
A Survey of Local Group Galaxies Currently Forming Stars: III. A Search for Luminous Blue Variables and Other H-alpha Emission-Lined Stars
Creators: name: Massey, Philip
name: McNill, Reagin T.
name: Olsen, K. A. G.
name: Hodge, Paul W.
name: Blaha, Cynthia
name: Jacoby, George H.
name: Smith, R. C.
name: Strong, Shay B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe a search for H-alpha emission-lined stars in M31, M33, and seven dwarfs in or near the Local Group (IC 10, NGC 6822, WLM, Sextans B, Sextans A, Pegasus and the Phoenix dwarf) using interference filter imaging with the KPNO and CTIO 4-m telescope and Mosaic cameras. The survey is aimed primarily at identifying new Luminous Blue Variables (LBVs) from their spectroscopic similarity to known LBVs, avoiding the bias towards photometric variability, which may require centuries to manifest itself if LBVs go through long quiescent periods. Followup spectroscopy with WIYN confirms that our survey detected a wealth of stars whose spectra are similar to the known LBVs. We "classify" the spectra of known LBVs, and compare these to the spectra of the new LBV candidates. We demonstrate spectacular spectral variability for several of the new LBV candidates, such as AM2, previously classified as a Wolf-Rayet star, which now shows FeI, FeII and Balmer emission lines but neither the NIII 4634,42 nor HeII 4686 emission that it did in 1982. Profound spectral changes are also noted for other suspected and known LBVs. Several of the LBV candidates also show >0.5 mag changes in V over the past 10-20 years. The number of known or suspected LBVs is now 24 in M31, 37 in M33, 1 in NGC 6822, and 3 in IC 10. We estimate that the total number of LBVs in M31 and M33 may be several hundred, in contrast to the 8 known historically through large-scale photometric variability. This has significant implications for the time scale of the LBV phase. We also identify a few new WRs and peculiar emission-lined objects.
description: Accepted by the Astronomical Journal. Version with higher quality figures may be downloaded from http://www.lowell.edu/users/massey/has.pdf.gz
IMPLEMENTATION OF AN ASYMPTOMATIC BACTERIURIA MANAGEMENT ALGORITHM IN A LONG-TERM CARE SETTING
Creators: name: Cao, Yu
Publisher: name: Zenodo
Year: 2020

description: Problem: Asymptomatic bacteriuria (ASB) is often misdiagnosed as a urinary tract infection and unnecessarily treated with antibiotics in a long-term care setting. Method: Change project with pre and post evaluation. Setting: A 99-bed long-term care facility. Participants: Physicians, nurse practitioners, physician assistants, and nurses. Innovation: An ASB algorithm was implemented through the following strategies: (a) In-service class for nurses with quiz pre and post; (b) Quality assurance meeting for HCP; (c) Nursing shift huddles; (d) Algorithm posts; (e) pocket-sized algorithm. Results: Quiz scores increased from 34.4% to 81.1% (p < 0.0001) after an in-service class. After the implementation, the percentage of urine cultures (UC) that were ordered routinely without documented reasons decreased from 49.23% to 6.67% (p = 0.0001); ASB overtreatment rate reduced from 86.9% to 42.86% (p = 0.0001). The prevalence of ASB was similar pre and post intervention 74.19% vs 63.64%, p = 0.1686) Conclusions: The use of an ASB algorithm and an educational intervention is important in the reduction of inappropriate antibiotic use, especially in LTCF. Nurses play a pivotal role in the process of assessment and treatment of ASB. Recommendations: Further evaluation in other types of settings will curtail antibiotic overtreatment, which contributes to the development of resistant organisms.
Quantitative Determination of the Confinement and Deconfinement of spinons in the anomalous spectra of Antiferromagnets via the Entanglement Entropy
Creators: name: Dong, Zhao-Yang
name: Wang, Wei
name: Gu, Zhao-Long
name: Li, Jian-Xin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We introduce an entanglement entropy analysis to quantitatively identify the confinement and deconfinement of the spinons in the spin excitations of quantum magnets. Our proposal is implemented by the parton construction of a honeycomb-lattice antiferromagnet exhibiting high-energy anomalous spectra. To obtain the quasiparticles of spin excitations for entanglement entropy calculations, we develop an effective Hamiltonian using the random phase approximation. We elaborate quantitatively the deconfinement-to-confinement transition of spinons in the anomalous spectra with the increase of the Hubbard interaction, indicating the avoided fractionalization of magnons in the strong interaction regime. Meanwhile, the Higgs mode at the Γ0 point is fractionalized into four degenerate spinon pairs, although it appears as a sharp well-defined peak in the spectra. Our work extends our understanding of the deconfinement of the spinon and its coexistence with the magnon in quantum magnets.
description: 6 pages, 4 figures
Gluonic Pole Matrix Elements in Spectator Models
Creators: name: Mukherjee, A.
name: Gamberg, L.
name: Mulders, P. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the gluonic pole matrix element contributing to the first $p_T$ moment of the distribution and fragmentation functions in a spectator model. By performing a spectral analysis, we find that for a large class of spectator models, the contribution of gluonic pole matrix elements is non-zero for the distribution correlators, whereas in fragmentation correlators they vanish. This outcome is important in the study of universality for fragmentation functions.
description: Talk given by A. Mukherjee at Transversity 2008, Ferrara, Italy
From mean-motion resonances to scattered planets: Producing the Solar System, eccentric exoplanets and Late Heavy Bombardments
Creators: name: Thommes, Edward W.
name: Bryden, Geoffrey
name: Wu, Yanqin
name: Rasio, Frederic A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We show that interaction with a gas disk may produce young planetary systems with closely-spaced orbits, stabilized by mean-motion resonances between neighbors. On longer timescales, after the gas is gone, interaction with a remnant planetesimal disk tends to pull these configurations apart, eventually inducing dynamical instability. We show that this can lead to a variety of outcomes; some cases resemble the Solar System, while others end up with high-eccentricity orbits reminiscent of the observed exoplanets. A similar mechanism has been previously suggested as the cause of the lunar Late Heavy Bombardment. Thus, it may be that a large-scale dynamical instability, with more or less cataclysmic results, is an evolutionary step common to many planetary systems, including our own.
description: 12 pages, 7 figures, submitted to ApJ
Molecular Emission Line Formation in Prestellar Cores
Creators: name: Pavlyuchenkov, Ya.
name: Wiebe, D.
name: Shustov, B.
name: Henning, Th.
name: Launhardt, R.
name: Semenov, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate general aspects of molecular line formation under conditions which are typical of prestellar cores. Focusing on simple linear molecules, we study formation of their rotational lines by radiative transfer simulations. We present a thermalization diagram to show the effects of collisions and radiation on the level excitation. We construct a detailed scheme (contribution chart) to illustrate the formation of emission line profiles. This chart can be used as an efficient tool to identify which parts of the cloud contribute to a specific line profile. We show how molecular line characteristics for uniform model clouds depend on hydrogen density, molecular column density, and kinetic temperature. The results are presented in a 2D plane to illustrate cooperative effects of the physical factors. We also use a core model with a non-uniform density distribution and chemical stratification to study the effects of cloud contraction and rotation on spectral line maps. We discuss the main issues that should be taken into account when dealing with interpretation and simulation of observed molecular lines.
description: Accepted for publication in ApJ
IDENTIFYING BARRIERS IN A MEDICALLY UNDERSERVED POPULATION
Creators: name: Garza, Gabriella
Publisher: name: Zenodo
Year: 2020

description: Health disparities have led to decreased access to comprehensive healthcare for medically underserved populations (MUP) who, according to the goals set forth by Healthy People 2020, should have equal access to healthcare. Individuals from MUP are defined as ethnic or racial individuals, in a specific geographical location, have a lower socioeconomic status, are underinsured, have increased no-show rates in primary care clinics, and suffer poorer health outcomes due to increased psychosocial barriers. Further investigation is needed to identify which barriers are affecting MUP and to determine if targeted case manager (CM) interventions to address barriers will improve patient appointment adherence rates. The purpose of this Doctor of Nursing Practice project is to adapt and implement an evidence-based screening tool, the Barriers to Health Questionnaire (BHQ), to identify the most prevalent psychosocial barriers to medical appointment adherence and to develop targeted interventions aimed to improve resources and services available in MUPs. This project utilized a convenience sample of current clinic patients to explore barriers in MUP. The BHQ was administered and data collected for 14 days. Descriptive statistics were used to determine the most prominent barriers affecting MUP. A chisquare analysis examined if CM intervention was successful in improving patient adherence to the next scheduled appointment. IRB approval was obtained through California State University, Fullerton. Of the 328 participants, 164 patients were referred to a CM. Approximately, 96% of patients referred to a CM had their psychosocial barrier iv addressed. A chi-square analysis revealed significantly (p=.007) higher attendance at the next scheduled appointment for patients referred to a CM compared to patients not referred to a CM. Hispanic, Latino women were the more prominent demographics in the project clinic (96%), supporting the existence of gender and racial disparities within MUPs. A lack of insurance (76%) and health care costs such as copays, medication, or treatment costs too high (71%) were the most prevalent barriers to appointment adherence affecting MUP. A patient’s perceived knowledge about insurance coverage requires further investigation, considering a majority of patients have Medicaid. Results support how pivotal providers and CMs can be in screening for barriers and improving appointment adherence and healthcare access. The BHQ is an effective evidence-based screening tool which can be used to identify barriers that negatively impact patient appointment adherence and health outcomes in MUPs. Further research to determine the efficacy of these tools should be ongoing in an effort to alleviate healthcare disparities in MUP. Additionally, continuous research must ensue to define how CMs are central interventionists that can promote improved health outcomes and appointment adherence in a population at-risk of dying from chronic disease due to a lack of healthcare access.
Demystifying Algorithmic Complexities and Geometric Review of the 'h'-Index
Creators: name: Ghosh, Kaushik
name: Mukhopadhyay, Mayukh
Publisher: name: arXiv
Year: 2021
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences
subject: 51N20 (Primary), 52B55 (Secondary), 65Y04 (Secondary), 68Q25 (Secondary), 68W40 (Secondary)

description: The current discourse delves into the effectiveness of h-index as an author level metric. It further reviews and explains the algorithmic complexity of calculating h-index through algebraic method. To conduct the algebraic analysis propositional algebra, algorithm and coding techniques have been used. Some use cases have been identified with a finite-data-set/set-of-array to demonstrate the coding techniques and for further analysis. Finally, the explanation and calculative complexities to determine the index have been further simplified through geometric method of calculating the h-index using the similar use cases that was used for coding. It is concluded that determination of the h-index using Euclidean geometric method with Cartesian frame of reference provides a through and visual clarification. Finally, a set of postulates has been proposed at the end of the paper, based on the case studies.
description: 18 pages, 2 figures, 5 cases
Stabilising viscous extensional flows using Reinforcement Learning
Creators: name: Vona, Marco
name: Lauga, Eric
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Machine Learning (cs.LG)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The four-roll mill, wherein four identical cylinders undergo rotation of identical magnitude but alternate signs, was originally proposed by GI Taylor to create local extensional flows and study their ability to deform small liquid drops. Since an extensional flow has an unstable eigendirection, a drop located at the flow stagnation point will have a tendency to escape. This unstable dynamics can however be stabilised using, e.g., a modulation of the rotation rates of the cylinders. Here we use Reinforcement Learning, a branch of Machine Learning devoted to the optimal selection of actions based on cumulative rewards, in order to devise a stabilisation algorithm for the four-roll mill flow. The flow is modelled as the linear superposition of four two-dimensional rotlets and the drop is treated as a rigid spherical particle smaller than all other length scales in the problem. Unlike previous attempts to devise control, we take a probabilistic approach whereby speed adjustments are drawn from a probability density function whose shape is improved over time via a form of gradient ascent know as Actor-Critic method. With enough training, our algorithm is able to precisely control the drop and keep it close to the stagnation point for as long as needed. We explore the impact of the physical and learning parameters on the effectiveness of the control and demonstrate the robustness of the algorithm against thermal noise. We finally show that Reinforcement Learning can provide a control algorithm effective for all initial positions and that can be adapted to limit the magnitude of the flow extension near the position of the drop.
Kinetic-Ion Simulations Addressing Whether Ion Trapping Inflates Stimulated Brillouin Backscattering Reflectivities
Creators: name: Cohen, B. I.
name: Williams, E. A.
name: Vu, H. X.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: An investigation of the possible inflation of stimulated Brillouin backscattering (SBS) due to ion kinetic effects is presented using electromagnetic particle simulations and integrations of three-wave coupled-mode equations with linear and nonlinear models of the nonlinear ion physics. Electrostatic simulations of linear ion Landau damping in an ion acoustic wave, nonlinear reduction of damping due to ion trapping, and nonlinear frequency shifts due to ion trapping establish a baseline for modeling the electromagnetic SBS simulations. Systematic scans of the laser intensity have been undertaken with both one-dimensional particle simulations and coupled-mode-equations integrations, and two values of the electron-to-ion temperature ratio (to vary the linear ion Landau damping) are considered. Three of the four intensity scans have evidence of SBS inflation as determined by observing more reflectivity in the particle simulations than in the corresponding three-wave mode-coupling integrations with a linear ion-wave model, and the particle simulations show evidence of ion trapping.
description: 56 pages, 20 figures
An experimental investigation of dual-polarized atmospheric propagation at 73 GHz
Creators: name: Peters, John Basil
Publisher: name: University of British Columbia
Year: 2010

description: This thesis describes the design, construction and results of an accurate, 73 GHz, dual-polarized atmospheric propagation experiment conducted over a 1.8 km total length radar path. The millimetre-wave equipment consisted of a switched-polarization transmitter and a two-channel receiving system which included a phase-compensated crosspolar cancellation network and a novel, high-performance microstrip IF/LO diplexer. Meteorological instrumentation consisted of an improved electrostatic disdrometer, a raingauge network with high temporal and spatial resolution and a three-vector anemometer. A comprehensive experimental model was developed to predict the system crosspolar discrimination (XPD) response during a wide variety of conditions. This model was used to analyze, for what is believed to be the first time, the effects of: orthomode transducer port mismatches, the frequency response and error sensitivity of crosspolar cancellation systems and the range of possible cancelled system XPD responses during rain. This model also led to the development of a phase compensation technique used to improve the stability of the crosspolar cancellation network. The application of the experimental model resulted in far more accurate determinations of path XPD than would have been otherwise possible. The cancelled XPD results showed a reasonable correlation to horizontal wind velocities and agreed with model predictions for effective mean canting angles ranging between 0 and 6°. The frequent observation of negative differential attenuations and erratic uncancelled XPDs led to the conclusion that drops along the path often did not have consistent shapes and canting angles. This is believed to be due to extremely variable wind conditions. Copolar attenuations considerably lower and higher than expected from the standard predictions were observed. The higher attenuations are satisfactorily explained as resulting from vertical wind conditions and are correlated to the predictions from a proposed model which includes the effects of constant vertical wind velocities.
Tensor-product vs. geometric-product coding
Creators: name: Aerts, Diederik
name: Czachor, Marek
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum computation is based on tensor products and entangled states. We discuss an alternative to the quantum framework where tensor products are replaced by geometric products and entangled states by multivectors. The resulting theory is analogous to quantum computation but does not involve quantum mechanics. We discuss in detail similarities and differences between the two approaches and illustrate the formulas by explicit geometric objects where multivector versions of the Bell-basis, GHZ, and Hadamard states are visualized by means of colored oriented polylines.
description: 6 eps figures
DECREASING CHILDHOOD OBESITY AT A NEIGHBORHOOD CLINIC: A PILOT STUDY
Creators: name: Xiaofei Guo
Publisher: name: Zenodo
Year: 2020

description: Childhood obesity is a national health issue that affects approximately 13 million children in the U.S., and one that has been strongly correlated with an increased incidence of diabetes, hyperlipidemia, and poor psychological health. Poor nutritional habits and low exercise patterns have been identified as two of the major causes. Hispanic/Latino children in particular have the highest prevalence of childhood obesity in this country (Gonzalez, 2016; Ochoa & Berge, 2017). The purpose of this DNP project was to study the effects of implementing a standardized childhood obesity educational program at a neighborhood pediatric clinic in the Los Angeles area, whose clients are primarily Hispanic/Latino. Institutional Review Board (IRB) full board approval was obtained for this crosssectional study. Inclusion criteria included children 7 to 12 years of age, who were classified as either overweight (BMI of 85 - 94%) or obese (BMI of 95% or higher). A standardized childhood obesity education program was instituted, with a phone follow-up one month out, and a return clinic visit two months out. The variables of interest were the child’s weight, BMI, dietary patterns, and exercise behaviors. A total of eight boys (57%) and six girls (43%) were recruited to participate in the study, with four children classified as overweight (29%) and 10 as obese (71%). A follow-up phone call was successfully performed for all of the participants; however, only 10/14 returned for their follow-up clinic visit. Paired t-tests were performed to evaluate the difference of BMI, iv height and weight before and after the education intervention. Changes in the children's weight and BMI were not statistically significant; however, reports of healthier lifestyle behaviors were obtained. Performing childhood obesity assessments can identify knowledge deficits as well as increase a family’s awareness about healthy lifestyle behaviors. The provision of childhood obesity education during well-child visits can be feasible in terms of time, with no added expense to the family. While it may be necessary to conduct a study like this over a longer period of time to see whether any significant improvements occur in terms of a child's weight and BMI, improvements in the child’s dietary and exercise behaviors occurred after just one educational intervention at this neighborhood pediatric clinic.
Illustrations of loosely-bound and resonant states in atomic nuclei
Creators: name: Dassie, A. C.
name: Gerdau, F.
name: Gonzalez, F. J.
name: Moyano, M.
name: Betan, R. M. Id
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: Using the one-dimensional potential well with realistic parameters for atomic nuclei, we illustrate the movement of the poles of the S-matrix, and the transmission coefficient when the well supports an anti-bound state. We calculate the phase shift of the atomic nuclei 5He using the three-dimensional potential well, and compare it with the experimental one. The paper gives a glance of some of the properties found in realistic loosely and resonant nuclear systems, using equations at the level of undergraduate students.
description: 9 pages, 9 figures, accepted in American Journal of Physics