cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
9-1-1 Calls for Voice-over-IP
Creators: name: Schulzrinne, Henning G.
Publisher: name: Columbia University
Year: 2003
Subjects: Computer science

description: This document enumerates some of the major opportunities and challenges for providing emergency call (9-1-1) services using IP technology. In particular, all VoIP devices are effectively mobile. The same IP telephony device works anywhere in the Internet, keeping the same external identifier such as an E.164 number or URL. (Note: This was also submitted as an ex-parte filing to the Federal Communications Commission.)
Biomarkers of fatty acids and risk of type 2 diabetes: a systematic review and meta-analysis of prospective cohort studies
Creators: name: Chen, Gengdong
name: Li, Yan
name: Zeng, Fangfang
name: Deng, Guifang
name: Liang, Jingjing
name: Wang, Jue
name: Su, Yixiang
name: Chen, Yuming
name: Mao, Limei
name: Liu, Zhengping
name: Bao, Wei
name: Zhang, Zheqing
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: We aimed to quantify and generate comprehensive evidence on the associations of different fatty acids (FAs) with the risk of type 2 diabetes mellitus (T2DM). PubMed, MEDLINE, and Embase were searched for prospective cohort studies that examined the association between FA biomarkers and the risk of T2DM published before 18 May 2020. Random-effects meta-analyses of the effects of FA concentration on T2DM were performed. Thirty-three studies involving 95,810 adults (19,904 cases) were included. Divergent associations of different types of FAs with type 2 diabetes were observed. The pooled relative risk (RRs) of T2DM comparing the top versus the bottom tertile of saturated FAs (C14:0, C16:0, C18:0, total saturated FAs), monounsaturated FA (C16:1 n-7), polyunsaturated FA (C20:3 n-6, C22:4 n-6), and Δ-6-desaturase activities ranged from 1.19 to 1.80. Interestingly, unlike previous studies, we found a negative correlation between odd-chain saturated FAs (C15:0, C17:0), trans-FAs (trans-C16:1 n-7), total n-6, Δ-5-desaturase activities and risk of T2DM. The pooled RRs of T2DM comparing the top versus the bottom tertile of these FAs ranged from 0.62 to 0.78. No associations with T2DM were observed for the other FAs. Considerable heterogeneity was observed in our study, and no definitive conclusions can be made until further investigation has been carried out.
Learning Cost-Sensitive Classification Rules for Network Intrusion Detection using RIPPER
Creators: name: Miller, Matthew
Publisher: name: Columbia University
Year: 1999
Subjects: Computer science

description: A system for automating the process of network intrusion detection is currently underway as part of the JAM Project. This system utilizes many data mining methods to build classifiers of network intrusions which can be used to test live network stream input in order to detect intrusions. This is done by using Link Analysis and Sequence Analysis methods to determine statistical attributes of network connections to build a set of connection profile records that can be useful in detection. These statistical attributes have various costs associated with their computation in a live environment. This paper studies the problem of building rule-sets with a sensitivity to the cost of computing each attribute. Low-cost attributes would be biased wherever possible, using high-cost attributes only when needed for reliable classification.
Vortex Dynamics in an Annular Bose-Einstein Condensate
Creators: name: Woo, S. J.
name: Son, Young-Woo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: We theoretically show that the topology of a non-simply-connected annular atomic Bose-Einstein condensate enforces the inner surface waves to be always excited with outer surface excitations and that the inner surface modes are associated with induced vortex dipoles unlike the surface waves of a simply-connected one with vortex monopoles. Consequently, under stirring to drive an inner surface wave, a peculiar population oscillation between the inner and outer surface is generated regardless of annulus thickness. Moreover, a new vortex nucleation process by stirring is observed that can merge the inner vortex dipoles and outer vortex into a single vortex inside the annulus. The energy spectrum for a rotating annular condensate with a vortex at the center also reveals the distinct connection of the Tkachenko modes of a vortex lattice to its inner surface excitations.
description: 5 pages, 6 figures
Weak measurements with orbital angular momentum pointer states
Creators: name: Puentes, G.
name: Hermosa, N.
name: Torres, J. P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Weak measurements are a unique tool for accessing information about weakly interacting quantum systems with minimal back action. Joint weak measurements of single-particle operators with pointer states characterized by a two-dimensional Gaussian distribution can provide, in turn, key information about quantum correlations which can be of relevance for quantum information applications. Here we demonstrate that by employing two-dimensional pointer states endowed with orbital angular momentum (OAM), it is possible to extract weak values of the higher order moments of single-particle operators, an inaccessible quantity with Gaussian pointer states only. We provide a specific example that illustrates the advantages of our method both, in terms of signal enhancement, and information retrieval.
description: 5 pages, accepted for publication in Phys. Rev. Lett
Structure-based methoxyflavone derivatives with potent inhibitory activity against various influenza neuraminidases
Creators: name: Zang, Yongjian
name: Hao, Dongxiao
name: Wang, He
name: Yang, Zhiwei
name: Liu, Huadong
name: Zhang, Shengli
Publisher: name: Taylor & Francis
Year: 2019
Subjects: Biochemistry
Pharmacology
Biotechnology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Virology

description: Communicated by Ramaswamy H. Sarma
Building a Natural Language Interface to Expert Systems
Creators: name: Moerdler, Galina Datskovsky
Publisher: name: Columbia University
Year: 1987
Subjects: Computer science

description: The primary goal of this research is to build a general semantics that will allow the mapping of user statements and questions into facts and goals of the underlying expert system. The semantic interpreter we propose to build will impose a structure on the underlying expert system, while being linguistically based and to some extent transportable. This last criterion requires that it separate domain dependent and independent information. Some of the main features of our semantic approach include linguistically based, hierarchically structured verb categories, a parsing algorithm that is encoded directly into the hierarchies and a mechanism to deal with semantically incomplete input. All of these features are discussed in detail later in the paper. A secondary contribution of this work is to build an inference engine, Director, for expert systems that meets the requirements imposed by a natural language interface. Figure 1-1 shows an overview of the total system as we envision it.
Daspletis stenoura Londt 1983, spec. nov.
Creators: name: Londt, Jason G. H.
Publisher: name: Zenodo
Year: 1983
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Asilidae
Daspletis
Daspletis stenoura

description: Daspletis stenoura spec. nov. Figs 22-24. Derivation: Gr. Stems = narrow; oura = tail. Refers to the narrow gonocoxites. Description: Agrees very closely with the description of D. hirtus except for the following points: Head: A11 antennal segments orange. Mystacal bristles yellow-white. Thorax: 4, supra-alar bristles. Legs: femora yellow-brown ventrally and distally on dorsal aspects. Wings: 83-93 mm long; 2,7—3,2 mm wide (in the northern Cape hirtus is generally a slightly larger species). Cell cup close to wing margin. Abdomen: d‘ genitalia as in Figs 22-24.. Variation: Only minor sexual dimorphism as in hirtus. MATERIAL EXAMINED. SOUTH AFRICA: Cape Province: 10 ♂ (holotype and paratypes) 3 ♀ (paratypes), 30 km E. Groblershoop, 2822CD, 19.iii. 1982, J. Londt & L. Schoernan, roadside vegetation (NM); 3♂ 4 ♀ (paratypes), Padkloof Pass ca. 20 km S. Witsand, Dry river course Grass/Acacias, 2822 DA, 17. iii. 1982, J. Londt & L. Schoeman (NM); 4 ♀ (paratypes), 15 km SE Vanzylsrus, 2622CC, 22. iii. 1 9 82, L. Londt & L. Schoeman, Acacias Grass/Shrubs (NM); 2 ♂ (paratypes), 55 km W. Vanzylsrus, 272 1 BA, 22.iii.19 82, J. Londt & L. Schoeman, Acacias/Dry Grass (NM); ı ♀ (paratype), 50 km SW of Kuruman, 2723CA, 24.iii. 1 9 82, J. Londt & L. Schoernan, Acacia woodland area (NM). NM Type no. 2655. Remarks: A species very similar to D. hirtus but male genitalia with narrow fused gonocoxites quite easily distinguished from those of hiríus. Females are difficult to separate but stenoura has bristles, especially those of the legs, somewhat yellower than in hirtus.
description: Published as part of Londt, Jason G. H., 1983, The Genus Daspletis Loew, 1858 And The Description Of Two New Genera, Anasillomos And Remotomyia (Diptera: Asilidae: Stenopogoninae), pp. 283-308 in Journal of the Entomological Society of Southern Africa 46 (2) on pages 295-296, DOI: 10.5281/zenodo.11781
Security testing of SIP implementations
Creators: name: Wieser, Christian
name: Laakso, Marko
name: Schulzrinne, Henning G.
Publisher: name: Columbia University
Year: 2003
Subjects: Computer science

description: The Session Initiation Protocol (SIP) is a signaling protocol for Internet telephony, multimedia conferencing and instant messaging. Although SIP implementations have not yet been widely deployed, the product portfolio is expanding rapidly. We describe a method to assess the robustness of SIP implementation by describing a tool to find vulnerabilities. We prepared the test material and carried out tests against a sample set of existing implementations. Results were reported to the vendors and the test suite was made publicly available. Many of the implementations available for evaluation failed to perform in a robust manner under the test. Some failures had information security implications, and should be considered vulnerabilities.
Computational Materials Design for High Critical Temperature Superconductivity in Hole-Doped Delafossite CuAlO$_2$: Transparent Superconductors
Creators: name: Nakanishi, Akitaka
name: Katayama-Yoshida, Hiroshi
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have calculated the superconducting critical temperature $T_c$ of hole-doped delafossite CuAlO$_2$ based on the first-principles calculations. According our calculation, $0.2\sim0.3$ hole-doped CuAlO$_2$ can become a phonon-mediated high-$T_c$ superconductor with $T_c\sim50$ K. In the hole-doped CuAlO$_2$, the A$_1$L$_1$ phonon mode that stretches O-Cu-O dumbbell has a strong electron-phonon interaction with electrons of the flat band in Cu 3d$_{3z^2-r^2}$ and the O 2p$_z$ anti-bonding $π$-band.
description: 11pages, 7figures
Colorado water, April 2004
Creators: name: Flanagan, Marian
name: Miller, Shirley
name: Colorado Water Resources Research Institute, Publisher
Publisher: name: Mountain Scholar
Year: 2004
Subjects: subject: Water resources development -- Colorado
subject: Water use -- Colorado
subject: Water-supply -- Colorado
subject: Water-supply -- Management -- Colorado

description: The scope of the newsletter is devoted to enhancing communication between Colorado water users and managers and faculty at the research universities in the state.
description: Newsletter of the Water Center at Colorado State University.
Two Lower Bounds In Asynchronous Distributed Computation
Creators: name: Duris, Pavol
name: Galil, Zvi
Publisher: name: Columbia University
Year: 1987
Subjects: Computer science

description: We introduce new techniques for deriving lower bounds on the message complexity in asynchronous distributed computation. These techniques combine the choice of specific patterns of communication delays and crossing sequence arguments with consideration of the speed of propagation of messages, together with careful counting of messages in different parts of the network. They enable us to prove the following results, settling two open problems: An Î©(n log* n) lower bound for the number of messages sent by an asynchronous algorithm for computing any nonconstant function on a bidirectional ring of n anonymous processors. An Î©(n log n) lower bound for the average number of messages sent by any maximum finding algorithm on a ring of n processors, in case n is known.
An infrared origin of leptonic mixing and its test at DeepCore
Creators: name: Terranova, F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Fermion mixing is generally believed to be a low-energy manifestation of an underlying theory whose energy scale is much larger than the electroweak scale. In this paper we investigate the possibility that the parameters describing lepton mixing actually arise from the low-energy behavior of the neutrino interacting fields. In particular, we conjecture that the measured value of the mixing angles for a given process depends on the number of unobservable flavor states at the energy of the process. We provide a covariant implementation of such conjecture, draw its consequences in a two neutrino family approximation and compare these findings with current experimental data. Finally we show that this infrared origin of mixing will be manifest at the Ice Cube DeepCore array, which measures atmospheric oscillations at energies much larger than the tau lepton mass; it will hence be experimentally tested in a short time scale.
description: 14 pages, 1 figure; version to appear in Int.J.Mod.Phys.A
Interlimb transfer of motor adaptations between the legs during walking
Creators: name: Houldin, Adina
Publisher: name: University of British Columbia
Year: 2011

description: Adaptations in kinematic and kinetic measurements have been demonstrated to occur in response to dynamic perturbations in the environment via feedback (e.g., reflexes) and feedforward (anticipatory) mediated mechanisms. Generalization of motor adaptations has been found to occur between the limbs, a process called interlimb transfer. Few studies have explored this phenomenon in the lower limbs and none have yet to elucidate whether the response to manipulation of the dynamic properties of one limb during a walking task will transfer to the other limb. This study aimed to determine whether locomotor adaptations to a velocity-dependent force field in one (trained) leg will transfer to the contralateral (test) leg during unipedal walking. It is expected that neuromuscular adaptations to force perturbations in the trained leg during walking will transfer to the contralateral test leg via generalization of anticipatory adaptive strategies. Twenty able-bodied, right leg dominant, adults walked unipedally in the Lokomat robotic gait orthosis, which applied velocity-dependent resistance to the legs. The amount of resistance was scaled to 10% percent of each individual’s maximum voluntary contraction of the hip flexors. Electromyography and kinematics of the lower limb were recorded. All subjects were tested for transfer of motor adaptations from the right leg to the left leg. Catch trials, consisting of the unexpected removal of resistance, were presented after the first step with resistance and after a period of adaptation to determine if there were any after-effects. The time course of adaptation in hip kinematics showed no significant differences between the legs. Catch trials of the lower limb kinematics were compared within and between the legs using a 2 by 2 repeated measures ANOVA. There was a main effect for time (p < 0.001) and an interaction effect for time and leg (p = 0.011). Post-hoc tests reveal no differences in the size of the after-effects between the legs during the catch trials. Motor adaptations to resistance against right unipedal walking did not generalize to left unipedal walking. The results of this study will add to our current understanding of the neural mechanisms that drive the basic walking pattern.
Federating Process-Centered Environments: The Oz Experience
Creators: name: Ben-Shaul, Israel Z.
name: Kaiser, Gail E.
Publisher: name: Columbia University
Year: 1997
Subjects: Computer science

description: We describe two models for federating process-centered environments (PCEs): homogeneous federation among distinct instances of the same environment framework enacting the same or different process models, and heterogeneous federation among diverse process enactment systems. We identify the requirements and consider possible architectures for each model although we concentrate primarily on the homogeneous case. The bulk of the paper presents our choice of architecture and corresponding infrastructure for homogeneous federation among Marvel environment instances as realized in the Oz system. We briefly consider how a single Marvel environment or an Oz federation of Marvel environments might be integrated into a heterogeneous federation based on ProcessWall's facilities for interoperating PCEs.
Free induction decay of a superposition stored in a quantum dot
Creators: name: Bennett, A. J.
name: Pooley, M. A.
name: Stevenson, R. M.
name: Farrer, I.
name: Ritchie, D. A.
name: Shields, A. J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We study the free evolution of a superposition initialized with high fidelity in the neutral-exciton state of a quantum dot. Readout of the state at later times is achieved by polarized photon detection, averaged over a large number of cycles. By controlling the fine-structure splitting (FSS) of the dot with a dc electric field, we show a reduction in the degree of polarization of the signal when the splitting is minimized. In analogy with the "free induction decay" observed in nuclear magnetic resonance, we attribute this to hyperfine interactions with nuclei in the semiconductor. We numerically model this effect and find good agreement with experimental studies. Our findings have implications for storage of superpositions in solid-state systems and for entangled photon pair emission protocols that require a small value of the FSS.
The derivation of two-dimensional surface shape from shadows
Creators: name: Hatzitheodorou, Michael
Publisher: name: Columbia University
Year: 1988
Subjects: Computer science

description: We study theoretical and implementation issues that arise when solving the shape from shadows problem. In this problem, the shadows created by a light falling on a surface are used to recover the surface itself. The problem is formulated and solved in a Hilbert space setting. We construct the spline algorithm that interpolates the data and show that it is the best possible approximation to the original function. The optimal error algorithm is implemented and a series of tests is shown. We additionally show that the problem can be decomposed into subproblems and each one can be solved independently from the others. This decomposition is suited to parallel computation and can result in considerable reductions in the cost of the solution.
Structure-based methoxyflavone derivatives with potent inhibitory activity against various influenza neuraminidases
Creators: name: Zang, Yongjian
name: Hao, Dongxiao
name: Wang, He
name: Yang, Zhiwei
name: Liu, Huadong
name: Zhang, Shengli
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Inhibition of neuraminidase has been considered as a promising way for the treatment of influenza. While the significant resistance to available commercial drugs highlights the development of new antiviral compounds and novel immunomodulatory agents. In this work, we studied a series of methoxyflavone (MF) analogues in contrast to the existing neuraminidase inhibitors (NAIs). The results revealed that the top 4 compounds share a couple of common functional groups of MF, and their binding patterns seem to be comparable to the case of oseltamivir, with some distinct binding profiles. Compound 7, with the replacement of carboxyl and guanidino groups at R7 and R5 of MF, presents the highest interaction energy among the selected derivatives. The molecular mechanics/generalized Born surface area (MM-GBSA) analysis further revealed that compound 7 has stronger nonpolar interactions in contrast to those of oseltamivir, with weaker polar interactions. What's more, compound 7 exerts tolerable binding affinities across the oseltamivir-resistant mutants, and binds well with various neuraminidases. Therefore, compound 7 should be an ideal lead compound with the potential broad-spectrum activities. We hope that these results are benefit for the development of next generation anti-influenza drugs.
Colorado water, August 2002
Creators: name: Flanagan, Marian
name: Blackledge, Michael
name: Miller, Shirley
name: Colorado Water Resources Research Institute, Publisher
Publisher: name: Mountain Scholar
Year: 2002
Subjects: subject: Water resources development -- Colorado
subject: Water use -- Colorado
subject: Water-supply -- Colorado
subject: Water-supply -- Management -- Colorado

description: The scope of the newsletter is devoted to enhancing communication between Colorado water users and managers and faculty at the research universities in the state.
description: Numbering on piece, vol. 18 is incorrect.
description: Newsletter of the Water Center at Colorado State University.
Colorado water, September/October 2012
Creators: name: Middleton, Lindsey A.
name: Colorado Water Institute, Publisher
Publisher: name: Mountain Scholar
Year: 2012
Subjects: subject: Water resources development -- Colorado
subject: Water use -- Colorado
subject: Water-supply -- Colorado
subject: Water-supply -- Management -- Colorado

description: The newsletter is devoted to enhancing communication between Colorado water users and managers and faculty at the state's research universities.
description: Newsletter of the Water Center of Colorado State University. Theme: Energy and water.
N-body simulation of a clumpy torus: application to active galactic nuclei
Creators: name: Bannikova, Elena Yu.
name: Vakulik, Victor G.
name: Sergeev, Alexey V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The gravitational properties of a torus are investigated. It is shown that a torus can be formed from test particles orbiting in the gravitational field of a central mass. In this case, a toroidal distribution is achieved because of the significant spread of inclinations and eccentricities of the orbits. To investigate the self-gravity of the torus we consider the $N$-body problem for a torus located in the gravitational field of a central mass. It is shown that in the equilibrium state the cross-section of the torus is oval with a Gaussian density distribution. The dependence of the obscuring efficiency on torus inclination is found.
description: 11 pages, 11 figures, accepted for publication in MNRAS (minor revisions to match accepted version)
Dioctobroma Hull 1962
Creators: name: Londt, Jason G. H.
Publisher: name: Zenodo
Year: 1983
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Asilidae
Dioctobroma

description: Dioctobroma Hull, 1962 Dioctobroma Hull, 1962: 162. Type species: D. flavoterminatus Hull, 1962: 163 by original designation. Dioctobroma is a well-deﬁned genus. I have studied the holotype of the only described species of D. flavoterminatum (BOTSWANA: 1 ♂, Ghanzi, Mongalatsila, 24.iv. 1925, J. Maurice (BMNH)), and another male with the same locality label. This other male has no type label and was probably not seen by Hull. This specimen may not belong to the same species as it differs in coloration, but its genitalia agree well with the holotype (Figs 28-30). Hull (1962) ﬁgured the wing which shows r5 to be closed and stalked. The only other material known to me, NAMIBIA: 2 ♂ 3 ♀ Namuskluft 88, SE 2716 Dd, 7- 15.x. 1970 (SMW & NM), possess open r5 cells, they are otherwise very similar to the holotype.
description: Published as part of Londt, Jason G. H., 1983, The Genus Daspletis Loew, 1858 And The Description Of Two New Genera, Anasillomos And Remotomyia (Diptera: Asilidae: Stenopogoninae), pp. 283-308 in Journal of the Entomological Society of Southern Africa 46 (2) on page 298, DOI: 10.5281/zenodo.11781
description: {"references": ["HULL, F. M. 1962. Robber Flies of the World; the genera of the family Asilidae. Bulletin ofthe United States National Museum 224 (2 parts). 907 pp."]}
Computation of Difference Groebner Bases
Creators: name: Gerdt, Vladimir P.
name: Robertz, Daniel
Publisher: name: arXiv
Year: 2012
Subjects: subject: Symbolic Computation (cs.SC)
subject: Rings and Algebras (math.RA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: To compute difference Groebner bases of ideals generated by linear polynomials we adopt to difference polynomial rings the involutive algorithm based on Janet-like division. The algorithm has been implemented in Maple in the form of the package LDA (Linear Difference Algebra) and we describe the main features of the package. Its applications are illustrated by generation of finite difference approximations to linear partial differential equations and by reduction of Feynman integrals. We also present the algorithm for an ideal generated by a finite set of nonlinear difference polynomials. If the algorithm terminates, then it constructs a Groebner basis of the ideal.
description: 17 pages
The OPS Family of Production System Languages
Creators: name: Pasik, Alexander J.
Publisher: name: Columbia University
Year: 1986
Subjects: Computer science

description: Production systems are widely used for the development of expert systems. The OPS family of languages comprise a set of low-level production system interpreters suitable for a large class of problem domains. They provide maximum flexibility at the expense of high-level functionality such as explanation and knowledge acquisition facilities. The languages differ with respect to their expressive power and efficiency. A description of the evolution of the languages together with an analysis of their differences provides insight into the current state of the art of production system language design. While none of the languages is clearly superior to the others, it is conceivable to combine the best features of each language in a future implementation.
Effective Dynamics in Bianchi Type II Loop Quantum Cosmology
Creators: name: Corichi, Alejandro
name: Montoya, Edison
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We numerically investigate the solutions to the effective equations of the Bianchi II model within the "improved" Loop Quantum Cosmology (LQC) dynamics. The matter source is a massless scalar field. We perform a systematic study of the space of solutions, and focus on the behavior of several geometrical observables. We show that the big-bang singularity is replaced by a bounce and the point-like singularities do not saturate the energy density bound. There are up to three directional bounces in the scale factors, one global bounce in the expansion, the shear presents up to four local maxima and can be zero at the bounce. This allows for solutions with density larger than the maximal density for the isotropic and Bianchi I cases. The asymptotic behavior is shown to behave like that of a Bianchi I model, and the effective solutions connect anisotropic solutions even when the shear is zero at the bounce. All known facts of Bianchi I are reproduced. In the "vacuum limit", solutions are such that almost all the dynamics is due to the anisotropies. Since Bianchi II plays an important role in the Bianchi IX model and the Belinskii, Khalatnikov, Lifshitz (BKL) conjecture, our results can provide an intuitive understanding of the behavior in the vicinity of general space-like singularities, when loop-geometric corrections are present.
description: 24 pages, 26 figures
An O(n2(m+n Log N)log N) Min-cost Flow Algorithm
Creators: name: Galil, Zvi
name: Tardos, Eva
Publisher: name: Columbia University
Year: 1987
Subjects: Computer science

description: The minimum-cost flow problem is: Given a network with n vertices and m edges, find a maximum flow of minimum cost. Many network problems are easily reducible to this problem. A polynomial-time algorithm for the problem has been known for some time, but only recently a strongly polynomial algorithm was discovered. In this paper an O(n2(m + n log n)log n) algorithm is designed. The previous best algorithm, due to Fujishige and Orlin, had an O(m2(m + nlogn)logn) time bound. Thus, for dense graphs an improvement of two orders of magnitude is obtained. The algorithm in this paper is based on Fujishige's algorithm (which is based on Tardos's algorithm). Fujishige's algorithm consists of up to m iterations, each consisting of O(m log n) steps. Each step solves a single source shortest path problem with nonnegative edge lengths. This algorithm is modified in order to make an improved analysis possible. The new algorithm may still consist of up to m iterations, and an iteration may still consist of up to O(mlogn) steps, but it can still be shown that the total number of steps is bounded by O(n2logn. The improvement is due to a new technique that relates the time spent to the progress achieved.
An adaptive clinical trial design for a sensitive subgroup examined in the multiple sclerosis context
Creators: name: Riddell, Corinne Aileen
Publisher: name: University of British Columbia
Year: 2011

description: Adaptive clinical trials are recently gaining more attention. In this thesis, generalizations to the Biomarker-Adaptive Threshold Design (BATD) are studied and applied in the multiple sclerosis (MS) context. The BATD was originally developed for survival outcomes for Phase III clinical trials and allows researchers to both study the efficacy of treatment in the overall group and to investigate the relationship between a hypothesized predictive biomarker and the treatment effect on the primary outcome. We first introduce the original methodology and replicate the authors’ simulation studies to confirm their findings. Then, we generalize the methodology to accommodate count biomarkers and outcomes. Our interest in variables of this form is fuelled by the study of MS, where the number of relapses is a commonly used count outcome for patients with relapsing-remitting MS. Through simulation studies, we find that the BATD has increased power compared with a traditional fixed design under varying scenarios for which there exists a sensitive patient subgroup. As an illustrative example, we consider data from a previously completed trial and apply the methodology for two hypothesized markers: baseline lesion activity and the length of time that a patient has had MS. While we do not find a predictive biomarker relationship between baseline lesion activity and the number of relapses, MS duration does appear to have a predictive biomarker relationship for this dataset. In particular, we consider a randomly chosen subsample of the data for which the overall treatment effect on the outcome was insignificant. When the BATD is applied, a very significant treatment effect is detected and indicates that the effect is strongest for patients that have had MS for less than 7.8 years for this subsample. The methodology holds promise at preserving statistical power when the treatment effect is greatest in a sensitive patient subset.
Dogonia Oldroyd 1970
Creators: name: Londt, Jason G. H.
Publisher: name: Zenodo
Year: 1983
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Asilidae
Dogonia

description: Dogonia Oldroyd, 1970 Dogonia Oldroyd, 1970: 269. Type species: D. saegeri Oldroyd, 1970: 269, by original designation Oldroyd (1970) described this genus for two species from Zaïre (D. nigra & D. saegeri). I have not seen this material. Although he says that Dogonia has “ metanotal callosities hairy ” he compares it with Scylaticus, Cyrtopogon and Saropogon, all of which lack setae on the anatergite. He mentions that the genus keys to Neodysmachus in Hull’s key but incorrectly calls Neodysmachus an Australian genus. Despite these confusing comments I believe Dogonia to be a valid genus and use the following features to separate it from Dioctobroma (the only other genus to lack well-developed occipital bristles). Oldroyd's Fig. 44 shows that Dogonia saegeri has a face slightly narrower than the width of one eye in anterior aspect (eye face width ratio 1,39 1) whereas Dioctobrama has a wider face (eye face width ratio 1,03 1). Dogonia has “ antennae with two rather short, subequal segments”, a feature not seen in Dioctobroma where the scape is clearly longer than the pedicel. Males of Dioctobroma ﬂavoterminatum have very reduced fused gonocoxites, quite unlike the condition illustrated by Oldroyd for both species of Dogonia. The genital characteristics are likely to be of generic signiﬁcance.
description: Published as part of Londt, Jason G. H., 1983, The Genus Daspletis Loew, 1858 And The Description Of Two New Genera, Anasillomos And Remotomyia (Diptera: Asilidae: Stenopogoninae), pp. 283-308 in Journal of the Entomological Society of Southern Africa 46 (2) on page 298, DOI: 10.5281/zenodo.11781
description: {"references": ["OLDROYD, H. 1970. Studies of African Asilidae (Diptera). 1. Asilidae of the Congo basin. Bulletin ofthe British Museum ofNatural History (Entomology). 24: 207 - 334."]}
Quantum system characterization with limited resources
Creators: name: Oi, Daniel
name: Schirmer, Sophie
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The construction and operation of large scale quantum information devices presents a grand challenge. A major issue is the effective control of coherent evolution, which requires accurate knowledge of the system dynamics that may vary from device to device. We review strategies for obtaining such knowledge from minimal initial resources and in an efficient manner, and apply these to the problem of characterization of a qubit embedded into a larger state manifold, made tractable by exploiting prior structural knowledge. We also investigate adaptive sampling for estimation of multiple parameters.
Presence Traffic Optimization Techniques
Creators: name: Singh, Vishal
name: Schulzrinne, Henning G.
name: Isomaki, Markus
name: Boni, Piotr
Publisher: name: Columbia University
Year: 2006
Subjects: Computer science

description: With the growth of presence-based services, it is important to provision the network to support high traffic and load generated by presence services. Presence event distribution systems amplify a single incoming PUBLISH message into possibly numerous outgoing NOTIFY messages from the server. This can increase the network load on inter-domain links and can potentially disrupt other QoS-sensitive applications. In this document, we present existing as well as new techniques that can be used to reduce presence traffic both in inter-domain and intra-domain scenarios. Specifically, we propose two new techniques: sending common NOTIFY for multiple watchers and batched notifications. We also propose some generic heuristics that can be used to reduce network traffic due to presence.
Oratostylum Ricardo 1925
Creators: name: Londt, Jason G. H.
Publisher: name: Zenodo
Year: 1983
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Asilidae
Oratostylum

description: Oratostylum Ricardo, 1925 Oratostylum Ricardo, 1925: 260. Type species: O. lepidum Ricardo 1925: 261, by original designation. I have examined Ricardo's type material of O. lepidum in the BMNH and, as Hull (1962) gives such a good description of this monotypic genus, I merely present drawings of the male genitalia for comparative purposes (Figs 32- 34). Oratostylum is very similar to Remotomyia but has a very prominent facial swelling (Fig. 31) unlike that found in Remotomyia (Fig. 36). Oratostylum lepidum has long palps which reach the level of the lower facial margin whereas Remotomyia species usually have shorter palps (in the case of R. longipalpus they are long). MATERIAL EXAMINED. ZIMBABWE; 1 ♂ (lectotype), Matopos, 3. x. 19 2 0, Rhodesian Museum (BMNH); 1 ♀ (paralectotype), Forestvale, 2 0.viii..1922, Rhodesian Museum (BMNH); 1 ♀ (paralectotypc), Bulawayo, 7. ix. 19 23, R. Stevenson (BMNH); 1 ♀, Khami Ruins, ı 8. viii. 1923, Rhodesian Museum (BMNH). NAMIBIA: 1 ♀, Damaraland, Okombahe area 22 km W Uis Mine, 6. ii. 19 74, M. E. Irwin, 830 m, gravel plain (NM). SOUTH AFRICA: Natal: 2 ♂, Lebombo foothills 5 km N Josini, 2732AC, 28. viii. 1982, under ﬁg tree, B. Stuckenberg (NM). Ricardo (1925) did not designate a holotype; I therefore designate the ♂ from Matopos as lectotype and the other specimens mentioned by Richardo as paralectotypes. The ♂ from Forestvale and ♂ from Umguza River are no longer in the BMNH.
description: Published as part of Londt, Jason G. H., 1983, The Genus Daspletis Loew, 1858 And The Description Of Two New Genera, Anasillomos And Remotomyia (Diptera: Asilidae: Stenopogoninae), pp. 283-308 in Journal of the Entomological Society of Southern Africa 46 (2) on pages 299-301, DOI: 10.5281/zenodo.11781
description: {"references": ["RICARDO, G. 1925. New species of Asilidae from South Africa. Annals and magazine ofnatuml history 15 (9): 234 - 282.", "HULL, F. M. 1962. Robber Flies of the World; the genera of the family Asilidae. Bulletin ofthe United States National Museum 224 (2 parts). 907 pp."]}
Home-Based Exergames for Older Adults Balance and Falls Risk: A Systematic Review
Creators: name: Alhagbani, Abdulrhman
name: Williams, Alison
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology

description: To evaluate whether unsupervised home-based exergames can improve balance and reduce falls risk among older people, with the reported adverse events being considered as a secondary objective. A systematic search of CINAHL, Medline Ovid, EMBASE Ovid, Ovid Emcare, AMED Ovid, PEDro, Cochrane and JBI was carried out. Each study was critically appraised using the JBI checklists. Of the 7 studies, a statistically significant improvement in balance outcomes was demonstrated in 5 studies. Of the 7 studies, 3 studies examined falls risk using the Physiological Profile Assessment (PPA), all of which showed a statistically significant reduction. Five studies revealed no adverse events, while 1 study reported neck and hip strain. Current evidence indicates that unsupervised home-based exergames reduced falls risk. Balance improved within-group, but evidence remains inconclusive when compared to no intervention or exercises. Muscle strain was reported as a result of exergaming in an unsupervised environment.
Colorado water, December 1999
Creators: name: Bartecchi, Dave
name: Shrier, Cat
name: Miller, Shirley
name: Colorado Water Resources Research Institute, Publisher
Publisher: name: Mountain Scholar
Year: 1999
Subjects: subject: Water resources development -- Colorado
subject: Water use -- Colorado
subject: Water-supply -- Colorado
subject: Water-supply -- Management -- Colorado

description: The scope of the newsletter is devoted to enhancing communication between Colorado water users and managers and faculty at the research universities in the state.
description: Newsletter of the Colorado Water Resources Research Institute.
Casimir effect for parallel metallic plates in cosmic string spacetime
Creators: name: de Mello, E. R. Bezerra
name: Saharian, A. A.
name: Grigoryan, A. Kh.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We evaluate the renormalized vacuum expectation values (VEVs) of electric and magnetic fields squared and the energy-momentum tensor for the electromagnetic field in the geometry of two parallel conducting plates on background of cosmic string spacetime. On the base of these results, the Casimir-Polder force on a polarizable particle and the Casimir forces acting on the plates are investigated. The VEVs are decomposed into the pure string and plate-induced parts. The VEV of the electric field squared is negative for points with radial distance to the string smaller than the distance to the plates and positive for the opposite situation. On the other hand the VEV for the magnetic field squared is negative everywhere. The boundary induced part in the VEV of the energy-momentum tensor is different from zero in the region between the plates only. Moreover, this part only depends on the distance from the string. The boundary-induced part in the vacuum energy density is positive for points with distance to the string smaller than the distance to the plates and negative in opposite situation. The Casimir stresses on the plates depend non-monotonically on the distance from the string. We show that the Casimir forces acting on the plates are always attractive.
description: 15 pages, 4 figures
Honours for Gaius Bultius Geminius Titianus
Creators: name: Prag, Jonathan
Publisher: name: Zenodo
Year: 2020
Subjects: subject: Sicily
subject: epigraphy
subject: http://vocab.getty.edu/page/aat/300138808
subject: https://pleiades.stoa.org/places/462492

description: TEI EpiDoc record
User's Manual for Pyramid Emulation on The Connection Machine
Creators: name: Brown, Lisa Gottesfeld
name: Ju, Qifan
name: Norman, Cynthia
Publisher: name: Columbia University
Year: 1988
Subjects: Computer science

description: This manual describes a set of functions for using image pyramids on the Connection Machine. These functions are an extension of *LISP which itself is an extension of *LISP. The functions were designed to work on the Connection Machine 2 of the Northeast Parallel Architectures Center located at Syracuse University.
Remotomyia Londt 1983, gen. nov.
Creators: name: Londt, Jason G. H.
Publisher: name: Zenodo
Year: 1983
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Asilidae
Remotomyia

description: Remotomyia gen. nov. Derivation: L. remotus; ='- remote; G. myia = fly. Refers to the fact that ﬂies of this group inhabit remote areas. Type species: Daspletis albosetatus Hull, 1967 by present designation. Diagnosis: Stenopogonine flies with the following combination of characters: Antenna with well-developed microsegment and enlarged scape (medially) and scutellum with strong bristles; propleuron and lateral lobes of pronotum with fine setae only - no strong bristles; palps usually less than half the length of the proboscis (except in langipalpus); facial swelling not markedly projecting in dorsal part (Fig. 36); É? with setae of abdominal segments 6 and 7 anteriorly directed (those on segments 1-5 posteriorly directed).
description: Published as part of Londt, Jason G. H., 1983, The Genus Daspletis Loew, 1858 And The Description Of Two New Genera, Anasillomos And Remotomyia (Diptera: Asilidae: Stenopogoninae), pp. 283-308 in Journal of the Entomological Society of Southern Africa 46 (2) on page 301, DOI: 10.5281/zenodo.11781
description: {"references": ["Hull 1967. Diptera (Brachyccra) Asilidae. South African Animal Life 13: 234 - 283."]}
Atomistic Mechanisms of Nonlinear Graphene Growth on Ir Surface
Creators: name: Wu, Ping
name: Jiang, Huijun
name: Zhang, Wenhua
name: Li, Zhenyu
name: Hou, Zhonghuai
name: Yang, Jinlong
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: As a two-dimensional material, graphene can be naturally obtained via epitaxial growth on a suitable substrate. Growth condition optimization usually requires an atomistic level understanding of the growth mechanism. In this article, we perform a mechanistic study about graphene growth on Ir(111) surface by combining first principles calculations and kinetic Monte Carlo (kMC) simulations. Small carbon clusters on the Ir surface are checked first. On terraces, arching chain configurations are favorable in energy and they are also of relatively high mobilities. At steps, some magic two-dimensional compact structures are identified, which show clear relevance to the nucleation process. Attachment of carbon species to a graphene edge is then studied. Due to the effect of substrate, at some edge sites, atomic carbon attachment becomes thermodynamically unfavorable. Graphene growth at these difficult sites has to proceed via cluster attachment, which is the growth rate determining step. Based on such an inhomogeneous growth picture, kMC simulations are made possible by successfully separating different timescales, and they well reproduce the experimentally observed nonlinear kinetics. Different growth rates and nonlinear behaviors are predicted for different graphene orientations, which is consistent with available experimental results. Importantly, as a phenomenon originated from lattice mismatch, inhomogeneity revealed in this case is expected to be quite universal and it should also make important roles in many other hetero-epitaxial systems.
Topic Shift Detection - finding new information in threaded news
Creators: name: Radev, Dragomir R.
Publisher: name: Columbia University
Year: 1999
Subjects: Computer science

description: On-line sources of news typically follow a particular pattern when presenting updates on a news event overtime. First, they produce a preliminary report on the event, and later send out updates as the story evolves. There are two classes of readers accessing the latter stories - these who have read the original announcement and are familiar with the story background and those who are "joining" the thread at a later point in time. Because of the existence of the two classes of readers, news sources typically include in consequent stories some information that was already present in earlier stories. We discuss our approach to identifying such repeated pieces of information in news threads and show how this knowledge can help in generating user-specific summaries of entire threads of articles.