cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Association between hepatitis B virus infection and metabolic syndrome: a retrospective cohort study in Shanghai, China
Creators: name: Zhou, Yanbing
name: Cui, Yan
name: Deng, Haiju
name: Yu, Jinming
Publisher: name: Columbia University
Year: 2014
Subjects: Metabolic syndrome
Hepatitis B
Epidemiology

description: Background: Metabolic syndrome (MS) and hepatitis B (HBV) infection are two major public health problems in China. There are few studies about their association, and the results of these studies are contradictory. We conducted a retrospective cohort study to assess the association between MS and HBV in a Shanghai community-based cohort. Methods: Nine hundred seventy-six Shanghai residents were recruited from the Putuo community. 480 HBV infections were in exposed group and 496 non-infections in unexposed group. All metabolic-related parameters and hepatitis B serology were tested with routine biochemical or immunological methods. “Exposed” was defined by HBV infection represented by hepatitis B surface antigen (HBsAg) and without anti-virus treatment. “Unexposed” were subjects who didn’t infect with HBV (Represented by HBsAg) and no MS when they entered the cohort. MS was defined based on the updated National Cholesterol Education Program Adult Treatment Panel III criteria. The Cox proportional hazards model was used to estimate the hazard ratios (HR) and related 95% confidence intervals (95% CI) for the association between HBV infection and MS over a 20-year follow-up period. Results: Of 976 subjects recruited, 480 had latent HBV infection (exposed subjects). After adjusting for age, the crude HR was 2.46 (95% CI: 1.77, 3.41). After adjusting for potential risk factors of MS (age, gender, smoking, passive smoking, alcohol consumption, physical activity, and diet), the HR was 2.27 (95% CI: 1.52, 3.38). Conclusions: This 20-year follow-up retrospective cohort study in Shanghai showed a positive association between HBV infection and MS.
Mathematical modeling of the effects of glutathione on arsenic methylation
Creators: name: Lawley, Sean
name: Yun, Jina
name: Gamble, Mary
name: Hall, Megan N.
name: Reed, Michael
name: Nijhout, H.
Publisher: name: Columbia University
Year: 2014
Subjects: Arsenic--Toxicology
Mathematical models
Methylation
Biochemistry

description: Background: Arsenic is a major environmental toxin that is detoxified in the liver by biochemical mechanisms that are still under study. In the traditional metabolic pathway, arsenic undergoes two methylation reactions, each followed by a reduction, after which it is exported and released in the urine. Recent experiments show that glutathione plays an important role in arsenic detoxification and an alternative biochemical pathway has been proposed in which arsenic is first conjugated by glutathione after which the conjugates are methylated. In addition, in rats arsenic-glutathione conjugates can be exported into the plasma and removed by the liver in the bile. Methods: We have developed a mathematical model for arsenic biochemistry that includes three mechanisms by which glutathione affects arsenic methylation: glutathione increases the speed of the reduction steps; glutathione affects the activity of arsenic methyltranferase; glutathione sequesters inorganic arsenic and its methylated downstream products. The model is based as much as possible on the known biochemistry of arsenic methylation derived from cellular and experimental studies. Results: We show that the model predicts and helps explain recent experimental data on the effects of glutathione on arsenic methylation. We explain why the experimental data imply that monomethyl arsonic acid inhibits the second methylation step. The model predicts time course data from recent experimental studies. We explain why increasing glutathione when it is low increases arsenic methylation and that at very high concentrations increasing glutathione decreases methylation. We explain why the possible temporal variation of the glutathione concentration affects the interpretation of experimental studies that last hours. Conclusions: The mathematical model aids in the interpretation of data from recent experimental studies and shows that the Challenger pathway of arsenic methylation, supplemented by the glutathione effects described above, is sufficient to understand and predict recent experimental data. More experimental studies are needed to explicate the detailed mechanisms of action of glutathione on arsenic methylation. Recent experimental work on the effects of glutathione on arsenic methylation and our modeling study suggest that supplements that increase hepatic glutathione production should be considered as strategies to reduce adverse health effects in affected populations.
The promise of record linkage for assessing the uptake of health services in resource constrained settings: a pilot study from South Africa
Creators: name: Kabudula, Chodziwadziwa
name: Clark, Benjamin D
name: Gómez-Olivé, Francesc
name: Tollman, Stephen
name: Menken, Jane
name: Reniers, Georges
Publisher: name: Columbia University
Year: 2014
Subjects: Public health surveillance
Medical sciences

description: Background: Health and Demographic Surveillance Systems (HDSS) have been instrumental in advancing population and health research in low- and middle- income countries where vital registration systems are often weak. However, the utility of HDSS would be enhanced if their databases could be linked with those of local health facilities. We assess the feasibility of record linkage in rural South Africa using data from the Agincourt HDSS and a local health facility. Methods: Using a gold standard dataset of 623 record pairs matched by means of fingerprints, we evaluate twenty record linkage scenarios (involving different identifiers, string comparison techniques and with and without clerical review) based on the Fellegi-Sunter probabilistic record linkage model. Matching rates and quality are measured by their sensitivity and positive predictive value (PPV). Background characteristics of matched and unmatched cases are compared to assess systematic bias in the resulting record-linked dataset. Results: A hybrid approach of deterministic followed by probabilistic record linkage, and scenarios that use an extended set of identifiers including another household member’s first name yield the best results. The best fully automated record linkage scenario has a sensitivity of 83.6% and PPV of 95.1%. The sensitivity and PPV increase to 84.3% and 96.9%, respectively, when clerical review is undertaken on 10% of the record pairs. The likelihood of being linked is significantly lower for females, non-South Africans and the elderly. Conclusion: Using records matched by means of fingerprints as the gold standard, we have demonstrated the feasibility of fully automated probabilistic record linkage using identifiers that are routinely collected in health facilities in South Africa. Our study also shows that matching statistics can be improved if other identifiers (e.g., another household member’s first name) are added to the set of matching variables, and, to a lesser extent, with clerical review. Matching success is, however, correlated with background characteristics that are indicative of the instability of personal attributes over time (e.g., surname in the case of women) or with misreporting (e.g., age).
Adult attention-deficit/hyperactivity disorder and nicotine use: a qualitative study of patient perceptions
Creators: name: Liebrenz, Michael
name: Frei, Anja
name: Fisher, Carl Erik
name: Gamma, Alex
name: Buadze, Anna
name: Eich, Dominique
Publisher: name: Columbia University
Year: 2014
Subjects: Smoking--Psychological aspects
Attention-deficit hyperactivity disorder
Mental health

description: Background: Adult Attention-Deficit/Hyperactivity Disorder (ADHD) is associated with high rates of comorbid substance use disorders, and cigarette smoking has a particularly high prevalence in this population. However, there is an ongoing debate as to whether this tobacco use is an attempt at “self-medication” or due to behavioral disinhibition. There is a surprising lack of qualitative studies that investigate the subjective perceptions of adults with ADHD regarding cigarette smoking. The present study was designed to fill this gap in the literature. Methods: We recruited twelve adult patients with ADHD and comorbid tobacco use from our ADHD consultation service, an outpatient facility of the Zurich University Psychiatric Hospital. Subjects were interviewed using qualitative methodology, and Mayring's qualitative content analysis was used to evaluate findings. Results: We identified two explanatory models linking ADHD and tobacco use: smoking as an attempt at self-medication and “smoking as a social behavior”. On one hand, subjects considered tobacco a therapeutic aid, reporting positive effects on “inner tension” and cognitive function, and noted possible antidepressant properties as well. On the other hand, subjects considered smoking to enhance social functioning and to have a positive impact on interpersonal relationships. The majority believed that stimulant medications offered only a transient decrease in patterns of tobacco use because their ability to reduce nicotine cravings wore off quickly. Others believed that stimulants had no effect or even reinforced cigarette use. Conclusions: Participants had different views about the link between cigarette smoking and ADHD. While the majority thought of nicotine as a sort of therapy, viewing smoking as a way to self-medicate symptoms of ADHD, motivations for nicotine use were also related to self-image, desire to belong to a peer-group, and a drive to undermine perceived social norms. Ultimately, these findings can be used by clinicians to improve treatment alliance and collaboration.
Isolate record for VAFB-ISO-545
Creators: name: Holloway, Corinne
Year: 1900
Subjects: subject: Santa Barbara (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/3486/santa-barbara-county
subject: Vandenberg Air Force Base (VAFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85469/vandenberg-air-force-base-vafb
subject: Vandenberg Space Force Base (VSFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85584/vandenberg-space-force-base-vsfb
subject: California (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/1484/california-state-territory
subject: Chipped Stone
valueUri: https://core.tdar.org/browse/material-type/2/chipped-stone
subject: Chert
valueUri: https://core.tdar.org/browse/material-type/213/chert
subject: Reconnaissance / Survey
valueUri: https://core.tdar.org/browse/investigation-type/7/reconnaissance-survey

description: This document is the isolated find record for VAFB-ISO-545. The artifact is a gray and white banded Monterey chert flake.
Quantum Breathing Mode of Trapped Systems in One and Two Dimensions
Creators: name: Abraham, Jan Willem
name: Bonitz, Michael
name: McDonald, Chris
name: Orlando, Gianfranco
name: Brabec, Thomas
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We investigate the quantum breathing mode (monopole oscillation) of trapped fermionic particles with Coulomb and dipole interaction in one and two dimensions. This collective oscillation has been shown to reveal detailed information on the many-particle state of interacting trapped systems and is thus a sensitive diagnostics for a variety of finite systems, including cold atomic and molecular gases in traps and optical lattics, electrons in metal clusters and in quantum confined semiconductor structures or nanoplasmas. An improved sum rule formalism allows us to accurately determine the breathing frequencies from the ground state of the system, avoiding complicated time-dependent simulations. In combination with the Hartree-Fock and the Thomas-Fermi approximations this enables us to extend the calculations to large particle numbers $N$ on the order of several million. Tracing the breathing frequency to large $N$ as a function of the coupling parameter of the system reveals a surprising difference of the asymptotic behavior of one-dimensional and two-dimensional harmonically trapped Coulomb systems.
description: 22 pages, 9 figures
Current concepts for oil decontamination of crush injuries: a review
Creators: name: Karimkhani, Chante
name: Amir, Mahsa
name: Dellavalle, Robert
name: Ipaktchi, Kyros
Publisher: name: Columbia University
Year: 2014
Subjects: Petroleum
Dermatology
Wounds and injuries
Medicine

description: This anecdotal, non-systematic review serves to explore the principles and methods of effective oil decontamination from cutaneous wounds, particularly crush injuries. The current expansion of the petroleum industry is necessary to meet increasing world demands for oil. Most stages of oil refining and applications involve significant injury risks, particularly for crush injuries that become contaminated with petroleum compounds. A literature review regarding a standard of care for effective cutaneous oil decontamination is lacking. Based on case reports, animal models, and in vitro studies identified in our expert opinion review, standard water and soap cleansing may not be an appropriate approach. Instead, the principle of ‘like dissolves like’ guides the use of lipophilic, petroleum-derived solvents to attract and subsequently dissolve the petroleum contaminant from the skin injury. Limitations include
paucity of and dated literature sources regarding the topic as well as no models specifically addressing crush injuries. Our literature review found that oil decontamination of cutaneous injuries may be best accomplished
with oil-based cleansers. Certainly, this topic has significant importance for the potentially carcinogenic petroleum compounds that pervade virtually every aspect of modern human life.
Composite Bound States and Broken U(1) symmetry in the Chemical Master Equation derivation of the Gray-Scott Model
Creators: name: Cooper, Fred
name: Ghoshal, Gourab
name: Pérez-Mercader, Juan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We give a first principles derivation of the stochastic partial differential equations that describe the chemical reactions of the Gray-Scott model (GS): $U+2V {\stackrel λ{\rightarrow}} 3 V;$ and $V {\stackrel μ{\rightarrow}} P$, $U {\stackrel ν{\rightarrow}} Q$, with a constant feed rate for $U$. We find that the conservation of probability ensured by the chemical master equation leads to a modification of the usual differential equations for the GS model which now involves two composite fields and also intrinsic noise terms. One of the composites is $ψ_1 = ϕ_v^2$, where $ < ϕ_v >_η = v$ is the concentration of the species $V$ and the averaging is over the internal noise $η_{u,v,ψ_1}$. The second composite field is the product of three fields $ χ= λϕ_u ϕ_v^2$ and requires a noise source to ensure probability conservation. A third composite $ψ_2 = ϕ_{u} ϕ_{v}$ can be also be identified from the noise-induced reactions. The Hamiltonian that governs the time evolution of the many-body wave function, associated with the master equation, has a broken U(1) symmetry related to particle number conservation. By expanding around the (broken symmetry) zero energy solution of the Hamiltonian (by performing a Doi shift) one obtains from our path integral formulation the usual reaction diffusion equation, at the classical level. The Langevin equations that are derived from the chemical master equation have multiplicative noise sources for the density fields $ϕ_u, ϕ_v, χ$ that induce higher order processes such as $n \rightarrow n$ scattering for $n > 3$. The amplitude of the noise acting on $ ϕ_v$ is itself stochastic in nature.
description: 9 pages, 2 figures
Data-driven discovery of seasonally linked diseases from an Electronic Health Records system
Creators: name: Melamed, Rachel
name: Khiabanian, Hossein
name: Rabadan, Raul
Publisher: name: Columbia University
Year: 2014
Subjects: subject: Diseases--Seasonal variations
subject: Bioinformatics
subject: FOS: Computer and information sciences

description: Background: Patterns of disease incidence can identify new risk factors for the disease or provide insight into the etiology. For example, allergies and infectious diseases have been shown to follow periodic temporal patterns due to seasonal changes in environmental or infectious agents. Previous work searching for seasonal or other temporal patterns in disease diagnosis rates has been limited both in the scope of the diseases examined and in the ability to distinguish unexpected seasonal patterns. Electronic Health Records (EHR) compile extensive longitudinal clinical information, constituting a unique source for discovery of trends in occurrence of disease. However, the data suffer from inherent biases that preclude an identification of temporal trends. Methods: Motivated by observation of the biases in this data source, we developed a method (Lomb-Scargle periodograms in detrended data, LSP-detrend) to find periodic patterns by adjusting the temporal information for broad trends in incidence, as well as seasonal changes in total hospitalizations. LSP-detrend can sensitively uncover periodic temporal patterns in the corrected data and identify the significance of the trend. We apply LSP-detrend to a compilation of records from 1.5 million patients encoded by ICD-9-CM (International Classification of Diseases, Ninth Revision, Clinical Modification), including 2,805 disorders with more than 500 occurrences across a 12 year period, recorded from 1.5 million patients. Results and conclusions: Although EHR data, and ICD-9 coded records in particular, were not created with the intention of aggregated use for research, these data can in fact be mined for periodic patterns in incidence of disease, if confounders are properly removed. Of all diagnoses, around 10% are identified as seasonal by LSP-detrend, including many known phenomena. We robustly reproduce previous findings, even for relatively rare diseases. For instance, Kawasaki disease, a rare childhood disease that has been associated with weather patterns, is detected as strongly linked with winter months. Among the novel results, we find a bi-annual increase in exacerbations of myasthenia gravis, a potentially life threatening complication of an autoimmune disease. We dissect the causes of this seasonal incidence and propose that factors predisposing patients to this event vary through the year.
Optimized event generator for strong-field QED simulations within the hi-$χ$ framework
Creators: name: Volokitin, Valentin
name: Magnusson, Joel
name: Bashinov, Aleksei
name: Efimenko, Evgeny
name: Muraviev, Alexander
name: Meyerov, Iosif
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Performance (cs.PF)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Probabilistic generation of photons and electron-positron pairs due to the processes of strong-field quantum electrodynamics (SFQED) is often the most resource-intensive part of the kinetic simulations required in order to model current and future experimental studies at high-intensity laser facilities. To reduce its computational demands one can exploit tabulation of the precomputed rates, time-step sub-cycling, dynamic down-sampling of particle/photon ensembles and other approaches. As the culmination of previous improvements, the method described here provides the opportunity to make the minimal possible number of rate computations per QED event and, therefore, this method can increase performance by more than an order of magnitude. The computational routine is publicly available as a part of the open-source framework hi-$χ$ designed as a Python-controlled toolbox for collaborative development.
Proechimys goeldii Thomas 1905
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Echimyidae
Proechimys
Proechimys goeldii

description: Proechimys goeldii Thomas, 1905. Ann. Mag. Nat. Hist., ser. 7, 15:587. TYPE LOCALITY: Brazil, Para, Santarem. DISTRIBUTION: Amazonian Brazil between Jamunda and Tapajoz Rivers; W. Brazil. ISIS NUMBER: 5301410029011004001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 6), pp. 560-594 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 589, DOI: 10.5281/zenodo.7353039
“If you do vasectomy and come back here weak, I will divorce you”: a qualitative study of community perceptions about vasectomy in Southern Ghana
Creators: name: Adongo, Philip
name: Tapsoba, Placide
name: Phillips, James F
name: Tabong, Philip Teg-Nefaah
name: Stone, Allison
name: Kuffour, Emmanuel
name: Esantsi, Selina
name: Akweongo, Patricia
Publisher: name: Columbia University
Year: 2014
Subjects: Vasectomy
Medical sciences

description: Background: Male involvement in contraceptive use is increasingly becoming a global reproductive health issue. Vasectomy is one of the two male modern contraceptive methods espoused by the National Family Planning Policy in Ghana. Despite these advocacies, there are reports of low patronage of this method in Ghana. This study adhering to RATS guidelines on qualitative research therefore explored the social and cultural factors that may be affecting the low vasectomy uptake in Southern Ghana. Methods: The study was conducted in Sefwi Bibiani-Ahwiaso Bekwai (SBAB) District and Komenda-Edina-Eguafo-Abrem (KEEA) Municipal area in the Western and Central regions of Ghana respectively. Twelve Focus Group Discussions were held with both male and female community members. In-depth interviews were also carried out with Community Health Officers (CHOs), Community Health Volunteers (CHVs) and health managers at both the district and regional levels. The discussions and interviews were recorded, transcribed verbatim and analysed using Nvivo 10. Results: The study revealed that vasectomy was perceived as an act against God, which was punishable either by death or answerable on judgement day. Vasectomy was also perceived to be a form of castration, which can make men weak and incapable, thereby unable to satisfy their wives sexually, leading to marital conflicts. Women were more concerned about the negative effects of vasectomy on men. Cafalgin and panacin which are locally manufactured analgesics were perceived to have contraceptive abilities and therefore used by men as an alternative to modern contraceptive methods. Conclusions: Stigma and the misconceptions in the community may be accounting for the low vasectomy uptake in Ghana despite several advocacy strategies. Women were highly influential in a man's decision on vasectomy. This calls for the need to increase health education to demystify the misconceptions about vasectomy. Vasectomy-related campaign messages should target both men and women.
Whittaker-Fourier coefficients of cusp forms on $\widetilde{Sp}_n$: reduction to a local statement
Creators: name: Lapid, Erez
name: Mao, Zhengyu
Publisher: name: arXiv
Year: 2014
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F30, 11F70

description: In a previous paper we formulated an analogue of the Ichino-Ikeda conjectures for Whittaker-Fourier coefficients of cusp forms on quasi-split groups, as well as the metaplectic group of arbitrary rank. In this paper we reduce the conjecture for the metaplectic group to a local conjectural identity. We motivate this conjecture by giving a heuristic argument for the case $\widetilde{SL}_2$. In a subsequent paper we will prove the local identity in the $p$-adic case.
description: Minor additions since last version
Dopamine Neurons Control Striatal Cholinergic Neurons via Regionally Heterogeneous Dopamine and Glutamate Signaling
Creators: name: Chuhma, Nao
name: Mingote, Susana
name: Moore, Holly M.
name: Rayport, Stephen G.
Publisher: name: Columbia University
Year: 2014
Subjects: subject: Cholinergic mechanisms
subject: Neurons
subject: Dopamine
subject: Neurosciences
subject: FOS: Clinical medicine
subject: Molecular biology

description: Midbrain dopamine neurons fire in bursts conveying salient information. Bursts are associated with pauses in tonic firing of striatal cholinergic interneurons. Although the reciprocal balance of dopamine and acetylcholine in the striatum is well known, how dopamine neurons control cholinergic neurons has not been elucidated. Here, we show that dopamine neurons make direct fast dopaminergic and glutamatergic connections with cholinergic interneurons, with regional heterogeneity. Dopamine neurons drive a burst-pause firing sequence in cholinergic interneurons in the medial shell of the nucleus accumbens, mixed actions in the accumbens core, and a pause in the dorsal striatum. This heterogeneity is due mainly to regional variation in dopamine-neuron glutamate cotransmission. A single dose of amphetamine attenuates dopamine neuron connections to cholinergic interneurons with dose-dependent regional specificity. Overall, the present data indicate that dopamine neurons control striatal circuit function via discrete, plastic connections with cholinergic interneurons.
An Integrated Framework for Diagnosis and Prognosis of Hybrid Systems
Creators: name: Chanthery, Elodie
name: Ribot, Pauline
Publisher: name: arXiv
Year: 2013
Subjects: subject: Systems and Control (eess.SY)
subject: Artificial Intelligence (cs.AI)
subject: Software Engineering (cs.SE)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Complex systems are naturally hybrid: their dynamic behavior is both continuous and discrete. For these systems, maintenance and repair are an increasing part of the total cost of final product. Efficient diagnosis and prognosis techniques have to be adopted to detect, isolate and anticipate faults. This paper presents an original integrated theoretical framework for diagnosis and prognosis of hybrid systems. The formalism used for hybrid diagnosis is enriched in order to be able to follow the evolution of an aging law for each fault of the system. The paper presents a methodology for interleaving diagnosis and prognosis in a hybrid framework.
description: In Proceedings HAS 2013, arXiv:1308.4904
Influence of the surface band structure on electron emission spectra from metal surfaces
Creators: name: Archubi, C. D.
name: Faraggi, M.
name: Silkin, V. M.
name: Gravielle, M. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Electron distributions produced by grazing impact of fast protons on Mg(0001), Cu(111), Ag(111) and Au(111) surfaces are investigated, focusing on the effects of the electronic band structure. The process is described within the Band-Structure-Based approximation, which is a perturbative method that includes an accurate representation of the electron-surface interaction, incorporating information of the electronic band structure of the solid. For all the studied surfaces, the presence of partially occupied surface electronic states produces noticeable structures in double differential - energy- and angle- resolved - electron emission probabilities from the valence band. These structures remain visible in electron emission spectra after adding contributions coming from core electrons, which might make it possible their experimental detection.
Search for a light Higgs boson decaying to two gluons or ss-bar in the radiative decays of Y(1S)
Creators: name: The BABAR Collaboration
name: Lees, J. P.
name: Others
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We search for the decay Y(1S) -> gamma A0, A0 -> gg or ss-bar, where A0 is the pseudoscalar light Higgs boson predicted by the next-to-minimal supersymmetric standard model. We use a sample of (17.6 +- 0.3)x 10^6 Y(1S) mesons produced in the BaBar experiment via e+e- -> Y(2S) -> pi+pi-Y(1S). We see no significant signal and set 90%-confidence-level upper limits on the product branching fraction B(Y(1S) -> gamma A0) x B(A0 -> gg or ss-bar) ranging from 10^-6 to 10^-2 for A0 masses in the range 0.5 to 9.0GeV/c^2.
description: 7 pages, 4 postscript figures, submitted to PRD-RC
Completeness of Lyapunov Abstraction
Creators: name: Wisniewski, Rafael
name: Sloth, Christoffer
Publisher: name: arXiv
Year: 2013
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this work, we continue our study on discrete abstractions of dynamical systems. To this end, we use a family of partitioning functions to generate an abstraction. The intersection of sub-level sets of the partitioning functions defines cells, which are regarded as discrete objects. The union of cells makes up the state space of the dynamical systems. Our construction gives rise to a combinatorial object - a timed automaton. We examine sound and complete abstractions. An abstraction is said to be sound when the flow of the time automata covers the flow lines of the dynamical systems. If the dynamics of the dynamical system and the time automaton are equivalent, the abstraction is complete. The commonly accepted paradigm for partitioning functions is that they ought to be transversal to the studied vector field. We show that there is no complete partitioning with transversal functions, even for particular dynamical systems whose critical sets are isolated critical points. Therefore, we allow the directional derivative along the vector field to be non-positive in this work. This considerably complicates the abstraction technique. For understanding dynamical systems, it is vital to study stable and unstable manifolds and their intersections. These objects appear naturally in this work. Indeed, we show that for an abstraction to be complete, the set of critical points of an abstraction function shall contain either the stable or unstable manifold of the dynamical system.
description: In Proceedings HAS 2013, arXiv:1308.4904
Control of ferromagnetism by manipulating the carrier wavefunction in ferromagnetic semiconductor (In,Fe)As quantum wells
Creators: name: Anh, Le Duc
name: Hai, Pham Nam
name: Tanaka, Masaaki
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We demonstrated the control of ferromagnetism in a surface quantum well containing a 5-nm-thick n-type ferromagnetic semiconductor (In,Fe)As layer sandwiched between two InAs layers, by manipulating the carrier wavefunction. The Curie temperature (Tc) of the (In,Fe)As layer was effectively changed by up to 12 K (ΔTc/Tc = 55%). Our calculation using the mean-field Zener theory reveals an unexpectedly large s-d exchange interaction in (In,Fe)As. Our results establish an effective way to control the ferromagnetism in quantum heterostructures of n-type FMSs, as well as require reconsideration on the current understanding of the s-d exchange interaction in narrow gap FMSs.
description: 28 pages icluding both main text(15 pages, 4 figures) and supplementary information (13 pages)
Scattering in Topologically Massive Gravity, Chiral Gravity and the corresponding Anyon-Anyon Potential Energy
Creators: name: Dengiz, Suat
name: Kilicarslan, Ercan
name: Tekin, Bayram
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We compute the tree-level scattering amplitude between two covariantly conserved sources in generic Cosmological Topologically Massive Gravity augmented with a Fierz-Pauli term that has three massive degrees of freedom. We consider the Chiral Gravity limit in the anti-de Sitter space as well as the limit of Flat-Space Chiral Gravity. We show that Chiral Gravity cannot be unitarily deformed with a Fierz-Pauli mass. We calculate the non-relativistic potential energy between two point-like spinning sources. In addition to the expected mass-mass and spin-spin interactions, there are mass-spin interactions due to the presence of the gravitational Chern-Simons term which induces spin for any massive object and turns it to an anyon. We also show that the tree-level scattering is trivial for the Flat-Space Chiral Gravity.
description: 12 pages, references added
Approximated Symbolic Computations over Hybrid Automata
Creators: name: Casagrande, Alberto
name: Dreossi, Tommaso
name: Piazza, Carla
Publisher: name: arXiv
Year: 2013
Subjects: subject: Systems and Control (eess.SY)
subject: Formal Languages and Automata Theory (cs.FL)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: C.1.3; F.4.3; I.1.3

description: Hybrid automata are a natural framework for modeling and analyzing systems which exhibit a mixed discrete continuous behaviour. However, the standard operational semantics defined over such models implicitly assume perfect knowledge of the real systems and infinite precision measurements. Such assumptions are not only unrealistic, but often lead to the construction of misleading models. For these reasons we believe that it is necessary to introduce more flexible semantics able to manage with noise, partial information, and finite precision instruments. In particular, in this paper we integrate in a single framework based on approximated semantics different over and under-approximation techniques for hybrid automata. Our framework allows to both compare, mix, and generalize such techniques obtaining different approximated reachability algorithms.
description: In Proceedings HAS 2013, arXiv:1308.4904
Superconductivity and magnetism on flux grown single crystals of NiBi3
Creators: name: Silva, B.
name: Luccas, R. F.
name: Nemes, N. M.
name: Hanko, J.
name: Kulkarni, M. R. Osorio P.
name: Mompean, F.
name: Garcia-Hernandez, M.
name: Ramos, M. A.
name: Vieira, S.
name: Suderow, H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present resistivity, magnetization and specific heat measurements on flux grown single crystals of NiBi3. We find typical behavior of a type-II superconductor, with, however, a sizable magnetic signal in the superconducting phase. There is a hysteretic magnetization characteristic of a ferromagnetic compound. By following the magnetization as a function of temperature, we find a drop at temperatures corresponding to the Curie temperature of ferromagnetic amorphous Ni. Thus, we assign the magnetism in NiBi$_3$ crystals to amorphous Ni impurities.
Explicit solutions of PDE via Vessiot theory and solvable structures
Creators: name: Tehseen, Naghmana
Publisher: name: arXiv
Year: 2014
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 58A10, 58A15, 58A17

description: We consider the problem of computing the integrable sub-distributions of the non-integrable Vessiot distribution of multi-dimensional second order partial differential equations (PDEs). We use Vessiot theory and solvable structures to find the largest integrable distributions contained in the Vessiot distribution associated to second order PDEs. In particular, we show how the solvable symmetry structure of the original PDE can be used to construct integrable sub-distributions leading to group invariant solutions of the PDE in two and more than two independent variables.
description: Comments welcome. 17 pages. Updated version. arXiv admin note: text overlap with arXiv:1302.5562
"fnh5002_I1301218.tab.gz" of "Measurement of Multijet Production in ep Collisions at High Q^2 and Determination of the Strong Coupling alpha_s"
Creators: name: H1 Collaboration
Publisher: name: HEPData
Year: 2014

description: Link to fastNLO v2.1 table (dijet, kT and anti-kT)
description: DESY-HERA. Inclusive jet, dijet and trijet differential cross sections are measured in neutral current deep-inelastic scattering for exchanged boson virtualities 150 < Q**2 < 15000 GeV**2 using the H1 detector at HERA. The data were taken in the years 2003 to 2007 and correspond to an integrated luminosity of 351 pb^{-1}. Double differential jet cross sections are obtained using a regularised unfolding procedure. They are presented as a function of Q**2 and the transverse momentum of the jet, PT(JET), and as a function of Q**2 and the proton longitudinal momentum fraction, XI, carried by the parton participating in the hard interaction. In addition normalised double differential jet cross sections are measured as the ratio of the jet cross sections to the inclusive neutral current cross sections in the respective Q**2 bins of the jet measurements. In dijet and trijet cross section measurements the variables used are labelled MEAN(PT(2JET)) and XI(2), and MEAN(PT(3JET)) and XI(3), respectively. These are defined as: - MEAN(PT(2JET)) = (1/2) * ( PT(JET(1)) + PT(JET(2)) ). - MEAN(PT(3JET)) = (1/3) * ( PT(JET(1)) + PT(JET(2)) + PT(JET(3)) ). - XI(2) = X * ( 1 + (M(12)**2 / Q**2) ) where X is the Bjorken scaling variable and M(12) is the invariant mass of the two leading jets. - XI(3) = X * ( 1 + (M(123)**2 / Q**2) ) where M(123) is the invariant mass of the three leading jets. Compared to earlier work, the measurements benefit from an improved reconstruction and calibration of the hadronic final state. The cross sections are compared to perturbative QCD calculations in next-to-leading order and are used to determine the running coupling and the value of the strong coupling constant as ALPHAS(M(Z)) = 0.1165 +- 0.0008 (exp) +- 0.0038 (pdf,theo).
Proechimys guairae Thomas 1901
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Echimyidae
Proechimys
Proechimys guairae

description: Proechimys guairae Thomas, 1901. Proc. Biol. Soc. Wash., 14:27. TYPE LOCALITY: Venezuela, Federal Dist., La Guaira. DISTRIBUTION: N.C. Venezuela, E. of Lake Maracaibo and the Merida Andes. COMMENT: Includes ochraceus; guairae and ochraceus were formerly included in guyannensis; see Reig et al., 1980:291-312, in Voronstov and Van Brink, eds., Animal genetics and evolution, Junk, The Hague. These authors also mention a closely related, undescribed species ("Barina's") from south of the Merida Andes.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 6), pp. 560-594 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on pages 589-590, DOI: 10.5281/zenodo.7353039
description: {"references": ["Reig, O. A., M. Aguilera, M. A. Barros, and M. Useche. 1980. Chromosomal speciation in a Rassenkreis of Venezuelan spiny rats (genus Proechimys; Rodentia: Echimyidae). Genetica, 52 / 53: 291 - 312."]}
Dissipative phase transitions in $n$-photon driven quantum nonlinear resonators
Creators: name: Minganti, Fabrizio
name: Savona, Vincenzo
name: Biella, Alberto
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate and characterize the emergence of finite-component dissipative phase transitions (DPTs) in nonlinear photon resonators subject to $n$-photon driving and dissipation. Exploiting a semiclassical approach, we derive general results on the occurrence of second-order DPTs in this class of systems. We show that for all odd $n$, no second-order DPT can occur while, for even $n$, the competition between higher-order nonlinearities determines the nature of the criticality and allows for second-order DPTs to emerge only for $n=2$ and $n=4$. As pivotal examples, we study the full quantum dynamics of three- and four-photon driven-dissipative Kerr resonators, confirming the prediction of the semiclassical analysis on the nature of the transitions. The stability of the vacuum and the typical timescales needed to access the different phases are also discussed. We also show a first-order DPT where multiple solutions emerge around zero, low, and high-photon numbers. Our results highlight the crucial role played by strong and weak symmetries in triggering critical behaviors, providing a Liouvillian framework to study the effects of high-order nonlinear processes in driven-dissipative systems, that can be applied to problems in quantum sensing and information processing.
description: 18 pages, 11 figures
"fnh5001_I1301218.tab.gz" of "Measurement of Multijet Production in ep Collisions at High Q^2 and Determination of the Strong Coupling alpha_s"
Creators: name: H1 Collaboration
Publisher: name: HEPData
Year: 2014

description: Link to fastNLO v2.1 table (inclusive jet, kT and anti-kT)
description: DESY-HERA. Inclusive jet, dijet and trijet differential cross sections are measured in neutral current deep-inelastic scattering for exchanged boson virtualities 150 < Q**2 < 15000 GeV**2 using the H1 detector at HERA. The data were taken in the years 2003 to 2007 and correspond to an integrated luminosity of 351 pb^{-1}. Double differential jet cross sections are obtained using a regularised unfolding procedure. They are presented as a function of Q**2 and the transverse momentum of the jet, PT(JET), and as a function of Q**2 and the proton longitudinal momentum fraction, XI, carried by the parton participating in the hard interaction. In addition normalised double differential jet cross sections are measured as the ratio of the jet cross sections to the inclusive neutral current cross sections in the respective Q**2 bins of the jet measurements. In dijet and trijet cross section measurements the variables used are labelled MEAN(PT(2JET)) and XI(2), and MEAN(PT(3JET)) and XI(3), respectively. These are defined as: - MEAN(PT(2JET)) = (1/2) * ( PT(JET(1)) + PT(JET(2)) ). - MEAN(PT(3JET)) = (1/3) * ( PT(JET(1)) + PT(JET(2)) + PT(JET(3)) ). - XI(2) = X * ( 1 + (M(12)**2 / Q**2) ) where X is the Bjorken scaling variable and M(12) is the invariant mass of the two leading jets. - XI(3) = X * ( 1 + (M(123)**2 / Q**2) ) where M(123) is the invariant mass of the three leading jets. Compared to earlier work, the measurements benefit from an improved reconstruction and calibration of the hadronic final state. The cross sections are compared to perturbative QCD calculations in next-to-leading order and are used to determine the running coupling and the value of the strong coupling constant as ALPHAS(M(Z)) = 0.1165 +- 0.0008 (exp) +- 0.0038 (pdf,theo).
"fnh5003kt_I1301218.tab.gz" of "Measurement of Multijet Production in ep Collisions at High Q^2 and Determination of the Strong Coupling alpha_s"
Creators: name: H1 Collaboration
Publisher: name: HEPData
Year: 2014

description: Link to fastNLO v2.1 table (trijet, kT)
description: DESY-HERA. Inclusive jet, dijet and trijet differential cross sections are measured in neutral current deep-inelastic scattering for exchanged boson virtualities 150 < Q**2 < 15000 GeV**2 using the H1 detector at HERA. The data were taken in the years 2003 to 2007 and correspond to an integrated luminosity of 351 pb^{-1}. Double differential jet cross sections are obtained using a regularised unfolding procedure. They are presented as a function of Q**2 and the transverse momentum of the jet, PT(JET), and as a function of Q**2 and the proton longitudinal momentum fraction, XI, carried by the parton participating in the hard interaction. In addition normalised double differential jet cross sections are measured as the ratio of the jet cross sections to the inclusive neutral current cross sections in the respective Q**2 bins of the jet measurements. In dijet and trijet cross section measurements the variables used are labelled MEAN(PT(2JET)) and XI(2), and MEAN(PT(3JET)) and XI(3), respectively. These are defined as: - MEAN(PT(2JET)) = (1/2) * ( PT(JET(1)) + PT(JET(2)) ). - MEAN(PT(3JET)) = (1/3) * ( PT(JET(1)) + PT(JET(2)) + PT(JET(3)) ). - XI(2) = X * ( 1 + (M(12)**2 / Q**2) ) where X is the Bjorken scaling variable and M(12) is the invariant mass of the two leading jets. - XI(3) = X * ( 1 + (M(123)**2 / Q**2) ) where M(123) is the invariant mass of the three leading jets. Compared to earlier work, the measurements benefit from an improved reconstruction and calibration of the hadronic final state. The cross sections are compared to perturbative QCD calculations in next-to-leading order and are used to determine the running coupling and the value of the strong coupling constant as ALPHAS(M(Z)) = 0.1165 +- 0.0008 (exp) +- 0.0038 (pdf,theo).
"fnh5003ak_I1301218.tab.gz" of "Measurement of Multijet Production in ep Collisions at High Q^2 and Determination of the Strong Coupling alpha_s"
Creators: name: H1 Collaboration
Publisher: name: HEPData
Year: 2014

description: Link to fastNLO v2.1 table (trijet, anti-kT)
description: DESY-HERA. Inclusive jet, dijet and trijet differential cross sections are measured in neutral current deep-inelastic scattering for exchanged boson virtualities 150 < Q**2 < 15000 GeV**2 using the H1 detector at HERA. The data were taken in the years 2003 to 2007 and correspond to an integrated luminosity of 351 pb^{-1}. Double differential jet cross sections are obtained using a regularised unfolding procedure. They are presented as a function of Q**2 and the transverse momentum of the jet, PT(JET), and as a function of Q**2 and the proton longitudinal momentum fraction, XI, carried by the parton participating in the hard interaction. In addition normalised double differential jet cross sections are measured as the ratio of the jet cross sections to the inclusive neutral current cross sections in the respective Q**2 bins of the jet measurements. In dijet and trijet cross section measurements the variables used are labelled MEAN(PT(2JET)) and XI(2), and MEAN(PT(3JET)) and XI(3), respectively. These are defined as: - MEAN(PT(2JET)) = (1/2) * ( PT(JET(1)) + PT(JET(2)) ). - MEAN(PT(3JET)) = (1/3) * ( PT(JET(1)) + PT(JET(2)) + PT(JET(3)) ). - XI(2) = X * ( 1 + (M(12)**2 / Q**2) ) where X is the Bjorken scaling variable and M(12) is the invariant mass of the two leading jets. - XI(3) = X * ( 1 + (M(123)**2 / Q**2) ) where M(123) is the invariant mass of the three leading jets. Compared to earlier work, the measurements benefit from an improved reconstruction and calibration of the hadronic final state. The cross sections are compared to perturbative QCD calculations in next-to-leading order and are used to determine the running coupling and the value of the strong coupling constant as ALPHAS(M(Z)) = 0.1165 +- 0.0008 (exp) +- 0.0038 (pdf,theo).
Three-body bound states in dipole-dipole interacting Rydberg atoms
Creators: name: Kiffner, Martin
name: Li, Wenhui
name: Jaksch, Dieter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that the dipole-dipole interaction between three identical Rydberg atoms can give rise to bound trimer states. The microscopic origin of these states is fundamentally different from Efimov physics. Two stable trimer configurations exist where the atoms form the vertices of an equilateral triangle in a plane perpendicular to a static electric field. The triangle edge length typically exceeds $R\approx 2\,μ\text{m}$, and each configuration is two-fold degenerate due to Kramers' degeneracy. The depth of the potential wells and the triangle edge length can be controlled by external parameters. We establish the Borromean nature of the trimer states, analyze the quantum dynamics in the potential wells and describe methods for their production and detection.
description: 5 pages, 3 figures and supplementary material; to appear in PRL