cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Group classification of heat conductivity equations with a nonlinear source
Creators: name: Zhdanov, R. Z.
name: Lahno, V. I.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We suggest a systematic procedure for classifying partial differential equations invariant with respect to low dimensional Lie algebras. This procedure is a proper synthesis of the infinitesimal Lie's method, technique of equivalence transformations and theory of classification of abstract low dimensional Lie algebras. As an application, we consider the problem of classifying heat conductivity equations in one variable with nonlinear convection and source terms. We have derived a complete classification of nonlinear equations of this type admitting nontrivial symmetry. It is shown that there are three, seven, twenty eight and twelve inequivalent classes of partial differential equations of the considered type that are invariant under the one-, two-, three- and four-dimensional Lie algebras, correspondingly. Furthermore, we prove that any partial differential equation belonging to the class under study and admitting symmetry group of the dimension higher than four is locally equivalent to a linear equation. This classification is compared to existing group classifications of nonlinear heat conductivity equations and one of the conclusions is that all of them can be obtained within the framework of our approach. Furthermore, a number of new invariant equations are constructed which have rich symmetry properties and, therefore, may be used for mathematical modeling of, say, nonlinear heat transfer processes.
description: LaTeX, 51 pages
title: Fagopyrum tataricum
title: Tatarischer Buchweizen (Fagopyrum tataricum)
titleType: AlternativeTitle
Creators: name: Schulz, Herbert
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2006
Subjects: subject: Diasammlung Herbert Schulz
subject: 580

description: Enthält 3 Bilder des Tatarischen Buchweizens.
PETROLEUM HYDRATE DEPOSITION MECHANISMS: THE INFLUENCE OF PIPELINE WETTABILITY
Creators: name: Aspenes, Guro
name: Høiland, Sylvi
name: Barth, Tanja
name: Askvik, Kjell Magne
name: Kini, Ramesh A.
name: Larsen, Roar
Publisher: name: The University of British Columbia
Year: 2016

description: The mechanisms by which hydrates deposit in a petroleum production-line are likely to be related to pipeline surface properties, e.g. pipeline material, surface energy and roughness. In this work, the wettability alteration of pipeline surfaces from contact with oil, as well as the adhesion energy between water and solid in the presence of oil is investigated. Contact angles are determined as a function of solid material and oil composition, for both model oils and crude oils. Although contact angles in oil/brine/solid systems have been extensively reported in the literature, the variety of solids that may mimic a pipeline is limited. In this study, we include various metal surfaces in addition to glass and a coating. Initial results from using near infrared imaging for collecting contact angle data in non-translucent systems are also presented.
title: Rumex arifolius
title: Berg-Sauerampfer (Rumex arifolius)
titleType: AlternativeTitle
Creators: name: Schulz, Herbert
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2006
Subjects: subject: Diasammlung Herbert Schulz
subject: 580

description: Enthält 16 Bilder des Berg-Sauerampfers.
title: P2Purinoceptor-Dependent Cardioprotection in Ischaemic-Reperfused Myocardium
Creators: name: Wee, Shirley Sheau Yan
Publisher: name: Griffith University
Year: 2012
Subjects: subject: P2 Purinoceptor family
subject: Regulatory cell surface receptors
subject: Ischaemic injury
subject: Ischaemic-reperfusion
subject: Myocardial resistance to ischaemia
subject: Myocardial resistance to reperfusion

description: The P2 purinoceptor family are perhaps the earliest (or most 'primitive') group of regulatory cell surface receptors, and have been studied intensely for several decades. The P2 receptors are subdivided into two major families, P2X subtypes (P2X1, P2X2, P2X3, P2X4, P2X5, P2X6 and P2X7,) and P2Y subtypes (P2Y1, P2Y2, P2Y4, P2Y6, P2Y11, P2Y12, P2Y13, and P2Y14). In the cardiovascular system P2 purinoceptors have been implicated both in vasoconstriction and vasodilatation, cardiac inotropy, cardioprotection (including pre- and postconditioning responses), and diseasedependent cardiac dysfunction. Furthermore, increasing evidence indicates that P2 purinoceptors form functional heteromeric assemblies under certain conditions, adding to the complexity of purinoceptor functionality. Thus, full characterisation of the regulatory function of these receptors is yet to be accomplished. This thesis comprises a series of studies aimed at elucidating the roles of P2 purinoceptors (primarily the P2Y2 subtype) in protecting the heart during ischaemia-reperfusion (relevant to the injurious effects of acute myocardial infarction).
Robust analogs to the Coefficient of Variation
Creators: name: Arachchige, Chandima N. P. G.
name: Prendergast, Luke A.
name: Staudte, Robert G.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: The coefficient of variation (CV) is commonly used to measure relative dispersion. However, since it is based on the sample mean and standard deviation, outliers can adversely affect the CV. Additionally, for skewed distributions the mean and standard deviation do not have natural interpretations and, consequently, neither does the CV. Here we investigate the extent to which quantile-based measures of relative dispersion can provide appropriate summary information as an alternative to the CV. In particular, we investigate two measures, the first being the interquartile range (in lieu of the standard deviation), divided by the median (in lieu of the mean), and the second being the median absolute deviation (MAD), divided by the median, as robust estimators of relative dispersion. In addition to comparing the influence functions of the competing estimators and their asymptotic biases and variances, we compare interval estimators using simulation studies to assess coverage.
description: 30 pages, 2 figures Changed "analogues" to "analogs" in title to match published version. Journal of Applied Statistics (2020)
Automated Polarization Rotation for Multi-Axis Rotational-Anisotropy Second Harmonic Generation Experiments
Creators: name: Morey, Karna A.
name: Fichera, Bryan T.
name: Lv, Baiqing
name: Shen, Zonqi
name: Gedik, Nuh
Publisher: name: arXiv
Year: 2025
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Rotational anisotropy second harmonic generation (RA-SHG) is a nonlinear optical technique used to probe the symmetry of condensed matter systems. Measuring the dependence of the SHG susceptibility on one or more external parameters, notably strain, field, temperature, or time delay, is an extremely powerful way to probe complex phases of quantum materials. Experimentally, extracting maximal information about the SHG susceptibility tensor requires measurements of S and P polarized input and output combinations, which naturally involves the rotation of the polarizers during data collection. For multi-axis experiments, this has proved challenging since polarization rotation is typically done manually. Automating this process eliminates labor constraints, reduces uncertainty due to low-frequency noise, and expands the type of multi-axis datasets that can be collected; however, it is difficult due to geometrical constraints within the setup. In this work, we design and implement low-cost, high-fidelity automated polarization rotators for use in multi-axis RA-SHG. These polarization rotators utilize an electrical slip ring to transfer power to the rotating RA-SHG optical setup as well as a miniature stepper motor to perform the polarization rotation. We demonstrate this automated system in time-resolved RA-SHG measurements in the non-centrosymmetric semiconductor GaAs. For the multi-axis measurements described above, this automated system permits data averaging over longer periods, vastly expedites data collection, and expands the setup measurement capability. This ultimately opens new frontiers in probing quantum materials using multiple tunable external parameters.
description: 7 pages, 5 figures
title: Honckenya peploides
title: Strand-Salzmiere (Honckenya peploides)
titleType: AlternativeTitle
Creators: name: Schulz, Herbert
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2006
Subjects: subject: Diasammlung Herbert Schulz
subject: 580

description: Enthält 8 Bilder der Strand-Salzmiere.
title: Arenaria ciliata
title: Wimper-Sandkraut (Arenaria ciliata)
titleType: AlternativeTitle
Creators: name: Schulz, Herbert
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2006
Subjects: subject: Diasammlung Herbert Schulz
subject: 580

description: Enthält 5 Bilder des Wimper-Sandkrauts.
Lie symmetries and solutions of KdV equation
Creators: name: Nadjafikhah, Mehdi
name: Seyed-Reza Hejazi
Publisher: name: figshare
Year: 2019
Subjects: subject: 10102 Algebraic and Differential Geometry
subject: FOS: Mathematics
subject: Geometry
subject: 10110 Partial Differential Equations

description: Symmetries of a differential equations is one of the most important concepts in theory of differential equations and physics. One of the most prominent equations is KdV (Kortwege-de Vries) equation with application in shallow water theory. In this paper we are going to explain a particular method for finding symmetries of KdV equation, which is called Harrison method. Our tools in this method are Lie derivatives and differential forms, which will be discussed in the first section more precisely. In second chapter we will have some analysis on the solutions of KdV equation and we give a method, which is called first integral method for finding the solutions of KdV equation.
title: Arenaria biflora
title: Zweiblütiges Sandkraut (Arenaria biflora)
titleType: AlternativeTitle
Creators: name: Schulz, Herbert
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2006
Subjects: subject: Diasammlung Herbert Schulz
subject: 580

description: Enthält 10 Bilder des Zweiblütigen Sandkrauts.
Essays on Malaria, Environment and Society
Creators: McCord, Gordon C.
Publisher: name: Columbia University
Year: 2011
Subjects: Malaria--Prevention
Sustainable development
Malaria--Environmental aspects
Economics
Public health
Public policy (Law)

description: The body of work presented here seeks to illuminate the complex relationship between human society, development, and environment for the case of malaria. While malaria profoundly affects human society and prospects for prosperity, public health measures and anthropogenic environmental change alter the intensity of transmission differentially around the globe. Using global maps of malaria risk, the first chapter finds that the elimination of the disease during the course of the 20th century occurred in places where the strength of transmission was weaker due to suboptimal ecology, and that this result holds even after controlling for income levels. The next chapter employs GIS datasets on population, urbanization, malaria risk, and malaria endemicity to spatially estimate the cost of fully deploying ecology-appropriate anti-malaria interventions in Africa; the cost of curbing malaria is found to be small (around $4 per person at risk per year), especially given its high disease burden and subsequent social and economic costs. I next construct a spatial month-to-month ecological index of malaria transmission strength, and use a climate change model to predict changes in ecological transmission strength of malaria and estimate the implied changes in incidence and mortality given current technology and public health efforts. The final chapter uses the malaria ecology index as an instrumental variable to estimate the effect of child mortality on fertility behavior. The large effect of child mortality indicates that malaria has an indirect effect on society beyond morbidity and mortality: high malaria burdens increase fertility rates, thus slowing the demographic transition. These chapters span the fields of epidemiology, public health systems, climate science, economics and demography in order to holistically model the relationship between malaria and human systems; such understanding of coupled human-natural systems will be vital to policy making for sustainable development.
Anthrax trifasciatus Meigen 1804
Creators: name: El-Hawagry, Magdi S.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Bombyliidae
Anthrax
Anthrax trifasciatus

description: Anthrax trifasciatus Meigen, 1804 (Figures 13, 16 (e))
 Anthrax trifasciata Meigen, 1804: 206. Type locality: France.
 Anthrax leucogaster Wiedemann in Meigen, 1820: 163. Type locality: ‘ Oesterreich’ [probably = Austria].
 Anthrax capitulata Mulsant, 1852: 11. Type locality: France.
 Argyramoeba heteropyga Sack, 1909: 531. Type locality: France (Corsica).
 Diagnosis
 Male and female: 6–11 mm in length (Figure 16 (e)). Head grey dusted and black haired except for the margin of occipital cavity which is fringed with brown-white hairs in female only; black hairs are intermixed with yellowish scaly hairs in frons and face.Occiput with sparse white scaly hairs. Scutum and scutellum covered with yellowish scaly hairs mixed with sparse black hairs; anterior margin of scutum with white hairs mixed with some black ones. Pleura with long yellowish and whitish scaly hairs and white hairs. Posterior margin of scutellum with white scales.Wing with extensive basicostal infuscation,but cell cup and anal lobe only infuscated on their bases; infuscation of cell cup ends before cross-vein bm-cu. Spot on cross-vein r-m is isolated from the basicostal infuscation by a clear area in cell r1 (Figure 16 (e)). Plumula white. Sides of 1st abdominal tergite with dense white hairs; however, sides of other tergites with black hairs being more extensive and dense in 2nd, 3rd and 4th tergites. In male, posterior margins of tergites 2–5 with white scales forming four spots at tergites 2 and 3, and two spots at tergites 4 and 5. In female, however, the white scales usually form transverse bands.6th and 7th tergites are entirely covered with white scales laterally; only the middle remains without scales. Posterior margins of all tergites except for the 1st with long black bristles. Gonocoxites (Figure 13 (a)) quadratic, with two long apical relatively broad prolongations or processes; gonostylus less angular, leaf-shaped; epiphallus (Figure 13 (b)) with complicated apical differentiations, with some small characteristic apical spines. Spermatheca (Figure 13 (c)) with an elongated egg-shaped, strongly sclerotised bulb, slightly constricted at lower third.
 Material examined
1 male, W. Abu-Hbeig (28.6411°N, 33.6525°E), 28 May 1997 (M. El-Hawagry, leg.), 1 male, 1 female, W. El-Arbaein (28.5469°N, 33.9530°E), 2 May 1998; 1 male, 1 female, same locality, 16 May 1998; 1 male, same locality, 4 June 1998 (M. El-Hawagry, leg.); 1 male, W. Garagniyia (28.4758°N, 34.0012°E), 24 May 1997 (M. El-Hawagry, leg.); 1 male, 1 female, W. Itlah (28.5750°N, 33.9281°E), 19 September 1997 (M. El-Hawagry, leg.) [MSHC].
description: Published as part of El-Hawagry, Magdi S., 2021, Taxonomy of the genus Anthrax Scopoli (Diptera: Bombyliidae) in Egypt, pp. 597-624 in Journal of Natural History 55 (9 - 10) on pages 618-619, DOI: 10.1080/00222933.2021.1914237, http://zenodo.org/record/5477393
title: Arenaria serpyllifolia
title: Thymianblättriges Sandkraut (Arenaria serpyllifolia)
titleType: AlternativeTitle
Creators: name: Schulz, Herbert
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2006
Subjects: subject: Quirlblättriges Sandkraut
subject: Diasammlung Herbert Schulz
subject: 580

description: Enthält 6 Bilder des Thymianblättrigen Sandkrauts.
Phase Mapping as a Powerful Diagnostic of Primordial Non-Gaussianity
Creators: name: Chiang, Lung-Yih
name: Naselsky, Pavel
name: Coles, Peter
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The identification and extraction of non-Gaussian signals is one of the main cosmological challenges facing future experimental measurements of the cosmic microwave background temperature pattern. We present a generalized statistical measure based on a novel technique representation of Fourier phases using the return map. We show that this method is both robust and powerful in comparison, for example, with morphological measures.
title: Moehringia trinervia
title: Dreinervige Nabelmiere (Moehringia trinervia)
titleType: AlternativeTitle
Creators: name: Schulz, Herbert
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2006
Subjects: subject: Diasammlung Herbert Schulz
subject: 580

description: Enthält 8 Bilder der Dreinervigen Nabelmiere.
title: Moehringia muscosa
title: Moos-Nabelmiere (Moehringia muscosa)
titleType: AlternativeTitle
Creators: name: Schulz, Herbert
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2006
Subjects: subject: Diasammlung Herbert Schulz
subject: 580

description: Enthält 6 Bilder der Moos-Nabelmiere.
Slide and Twist: Manipulating Polarization in Multilayer Hexagonal Boron-Nitride
Creators: name: Vizcaya, Sanber
name: Riffo, Felipe Perez
name: Florez, Juan M.
name: Morell, Eric Súarez
Publisher: name: arXiv
Year: 2025
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: This study explores the world of across-layer sliding ferroelectricity in multilayer hexagonal boron nitride (hBN) and gallium nitride (hGaN), aiming to control out-of-plane polarization. By investigating the effects of sliding single or dual layers in various hBN stacking configurations, we uncover methods for reversing polarization with energy barriers between 5 and 30 meV/f.u., making these methods experimentally viable. Our results show that single-interface sliding is more energetically favorable, with lower barriers compared to multiple interfaces. Certain pathways reveal stable polarization plateaus, where polarization remains constant during specific sliding phases, promising robust polarization control. Moreover, rotated multilayer structures maintain consistent net out-of-plane polarization across different rotation angles. In trilayer ABT structures, rotating the top layer and sliding the bottom layer can reverse polarization, expanding device design possibilities. While the primary focus is on hBN, similar phenomena in hGaN suggest broader applicability for this class of polar materials. The identified energy barriers support the feasibility of fabricating devices based on these multilayer structures.
description: 10 pages, 8 figures, regular paper
Polyurethane Toggles
Creators: name: Defant, Colin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05A05, 05E18, 05A19

description: We consider the involutions known as "toggles," which have been used to give simplified proofs of the fundamental properties of the promotion and evacuation maps. We transfer these involutions so that they generate a group $\mathscr P_n$ that acts on the set $S_n$ of permutations of $\{1,\ldots,n\}$. After characterizing its orbits in terms of permutation skeletons, we apply the action in order to understand West's stack-sorting map. We obtain a very simple proof of a result that clarifies and extensively generalizes a theorem of Bouvel and Guibert and also generalizes a theorem of Bousquet-Mélou. We also settle a conjecture of Bouvel and Guibert. We prove a result related to the recently-introduced notion of postorder Wilf equivalence. Finally, we investigate an interesting connection among the action of $\mathscr P_n$ on $S_n$, the group structure of $S_n$, and the stack-sorting map.
description: 13 pages, 0 figures
Symmetry analysis for a new form of the vortex mode equation
Creators: name: Nadjafikhah, Mehdi
name: Mahdipour-Shirayeh, Ali
Publisher: name: figshare
Year: 2019
Subjects: subject: 10102 Algebraic and Differential Geometry
subject: FOS: Mathematics
subject: Geometry

description: Giving a new form of the vortex mode equation by a proper change of parameter, our aim is to analyze the point and contact symmetries of the new equation. Fundamental invariants and a form of general solutions of point transformations along with some specific examples are also derived.
Noncommutative analogues of q-special polynomials and q-integral on a quantum sphere
Creators: name: Gurevich, D.
name: Vainerman, L.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: The q-Legendre polynomials can be treated as some special "functions in the quantum double cosets $U(1)\setminus SU_q(2)/U(1)$". They form a family (depending on a parameter $q$) of polynomials in one variable. We get their further generalization by introducing a two parameter family of polynomials. If the former family arises from an algebra which is in a sense "q-commutative", the latter one is related to its noncommutative counterpart. We introduce also a two parameter deformation of the invariant integral on a sphere.
description: 14 pages Latex
title: Moehringia ciliata
title: Bewimperte Nabelmiere (Moehringia ciliata)
titleType: AlternativeTitle
Creators: name: Schulz, Herbert
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2006
Subjects: subject: Diasammlung Herbert Schulz
subject: 580

description: Enthält 4 Bilder der Bewimperten Nabelmiere.
Old stellar Galactic disc in near-plane regions according to 2MASS: scales, cut-off, flare and warp
Creators: name: Lopez-Corredoira, M.
name: Cabrera-Lavers, A.
name: Garzon, F.
name: Hammersley, P. L.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have pursued two different methods to analyze the old stellar population near the Galactic plane, using data from the 2MASS survey. The first method is based on the isolation of the red clump giant population in the color-magnitude diagrams and the inversion of its star counts to obtain directly the density distribution along the line of sight. The second method fits the parameters of a disc model to the star counts in 820 regions. Results from both independent methods are consistent with each other. The qualitative conclusions are that the disc is well fitted by an exponential distribution in both the galactocentric distance and height. There is not an abrupt cut-off in the stellar disc (at least within R<15 kpc). There is a strong flare (i.e. an increase of scale-height towards the outer Galaxy) which begins well inside the solar circle, and hence there is a decrease of the scale-height towards the inner Galaxy. Another notable feature is the existence of a warp in the old stellar population whose amplitude is coincident with the amplitude of the gas warp. It is shown for low latitude stars (mean height: |z|~300 pc) in the outer disc (galactocentric radius R>6 kpc) that: the scale-height in the solar circle is h_z(R_sun)=3.6e-2 R_sun, the scale-length of the surface density is h_R=0.42 R_sun and the scale-length of the space density in the plane (i.e. including the effect of the flare) is H=0.25 R_sun. The variation of the scale-height due to the flare follows roughly a law h_z(R) =~ h_z(R_sun) exp [(R-R_\odot)/([12-0.6R(kpc)] kpc)] (for R
description: LaTEX, 20 pages, 23 figures, accepted to be published in A&A
Symmetry analysis of the cylindrical Laplace equation
Creators: name: Nadjafikhah, Mehdi
Publisher: name: figshare
Year: 2019
Subjects: subject: Geometry
subject: 10102 Algebraic and Differential Geometry
subject: FOS: Mathematics
subject: 10110 Partial Differential Equations

description: The symmetry analysis for Laplace equation on cylinder is considered. Symmetry algebra, the structure of the Lie algebra of the symmetries and some related topics such as invariant solutions, one-parameter subgroups, one dimensional optimal system and differential invariants are given.
title: Minuartia laricifolia
title: Nadelblättrige Miere (Minuartia laricifolia)
titleType: AlternativeTitle
Creators: name: Schulz, Herbert
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2006
Subjects: subject: Diasammlung Herbert Schulz
subject: 580

description: Enthält 6 Bilder der Nadelblättrigen Miere.
title: The Role of Sport Events in Spectator Sponsor/Brand Attitudes: A Case Study of the Quiksilver Pro
Creators: name: Randhawa, Kavaljit
Publisher: name: Griffith University
Year: 2017
Subjects: subject: Sport event
subject: Brand image
subject: Attitudes towards brands
subject: Purchasing behaviour
subject: Purchasing intentions
subject: Brand publicity

description: Sport events are frequently used as a marketing tool by sponsoring organisations. However, the effectiveness of this strategy towards future purchase intentions and behaviour has received limited theoretical/empirical research attention. Using an established sport event as a case study (2012 Quiksilver Pro), this thesis seeks to address this gap by investigating spectator’s attitudes towards brands of key public and private event sponsors based on: 1) motivations to attend events; 2) identification with brands; 3) satisfaction with event; and the consequent impact this has on purchasing decisions. This is significant as previous studies on attitudes, identification and intentions to purchase have mainly been focused on sport teams and not on sponsors’ brands. Research has also been abundant on destination-event fit and even sponsor-event fit; however a case triangulating the destination-event-sponsor fit has not been examined. The Gold Coast Surfing Industry is one such case where there is a clear destination-event-sponsor fit between Gold Coast as a destination, Quiksilver Pro as an event and Gold Coast City Council (public) and Quiksilver (private) as sponsors. Surprisingly, little academic research attention, especially within an event context, has focussed on the surfing industry despite major market players investing significant marketing budgets in costly surfing events. There also appears within the surfing industry limited understanding of the impact of surfing events on future revenue generation.
Chromadora Bastian 1865
Creators: name: Neres, Patrícia Fernandes
name: Santos, Paulo Jorge Parreira Dos
name: Esteves, André Morgado
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Nematoda
Adenophorea
Desmodorida
Chromadoridae
Chromadora

description: Genus Chromadora Bastian, 1865 (emended after Venekey et al. 2019)
 Diagnosis. Cuticle with homogeneous punctation pattern along the body, with lateral differentiation of larger dots. Transverse slit-like amphideal fovea. Buccal cavity usually with three solid teeth, the dorsal tooth larger than ventrosublateral teeth. Occasionally, only one dorsal tooth is observed. Ocelli may be present. Pharynx with terminal bulb, simple or double. Males usually with cup-shaped precloacal supplements.
 The genus is very similar to Atrochromadora, the main difference is the amphideal fovea shape which is more circular in the current genus; the variable number of teeth (one or three) is also another feature that can be easily used in the identification of Chromadora species. Marine.
description: Published as part of Neres, Patrícia Fernandes, Santos, Paulo Jorge Parreira Dos & Esteves, André Morgado, 2021, New chromadorid nematodes from Brazilian coral reefs: a taxonomic contribution to Chromadora Bastian, 1865, pp. 47-79 in Zootaxa 5032 (1) on page 49, DOI: 10.11646/zootaxa.5032.1.2, http://zenodo.org/record/5477471
Transitions and Probes in Turbulent Helium
Creators: name: Emsellem, V.
name: Kadanoff, L.
name: Lohse, D.
name: Tabeling, P.
name: Wang, J.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Previous analysis of a Paris turbulence experiment \cite{zoc94,tab95} shows a transition at the Taylor Reynolds number $\rel \approx 700$. Here correlation function data is analyzed which gives further evidence for this transition. It is seen in both the power spectrum and in structure function measurements. Two possible explanations may be offered for this observed transition: that it is intrinsic to the turbulence flow in this closed box experiment or that it is an effect of a change in the flow around the anemometer. We particularly examine a pair of ``probe effects''. The first is a thermal boundary layer which does exist about the probe and does limit the probe response, particularly at high frequencies. Arguments based on simulations of the response and upon observations of dissipation suggests that this effect is only crucial beyond $\rel\approx 2000$. The second effect is produced by vortex shedding behind the probe. This has been seen to produce a large modification in some of the power spectra for large $\rel$. It might also complicate the interpretation of the experimental results. However, there seems to be a remaining range of data for $\rel < 1300$ uncomplicated by these effects, and which are thus suggestive of an intrinsic transition.
description: uuencoded .ps files. submitted to PRE. 12 figures are sent upon request to jane wang (jw@control.uchicago.edu)
Affine classification of $n-$curves
Creators: name: Nadjafikhah, Mehdi
name: Mahdipour-Shirayeh, Ali
Publisher: name: figshare
Year: 2019
Subjects: subject: Geometry
subject: 10102 Algebraic and Differential Geometry
subject: FOS: Mathematics
subject: 10110 Partial Differential Equations

description: The classification of curves up to affine transformations in a finite dimensional space was studied by some different methods. In this paper, we obtain the exact formulas of affine invariants via the equivalence problem in view of Cartan’s theorem and then, we state a necessary and sufficient condition for the classification of $n–$Curves.
On a Combinatorial Identity
Creators: name: Ding, Jintai
name: Jing, Naihuan
Publisher: name: arXiv
Year: 1999
Subjects: subject: Quantum Algebra (math.QA)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05E; 17B

description: Recently the second named author discovered a combinatorial identity in the context of vertex representations of quantum Kac-Moody algebras. We give a direct and elementary proof of this identity. Our method is to show a related identity of distributions.
description: 7 pages
title: Understanding Host Community’s Experiences in Establishing and Developing Small Tourism Enterprises in Lombok, Indonesia
Creators: name: Soufi, Akhmad
Publisher: name: Griffith University
Year: 2013
Subjects: subject: Tourism industry, Lombok, Indonesia
subject: Entrepreneurship, Lombok, Indonesis
subject: Enterprises, Lombok, Indonesia

description: Entrepreneurship has been suggested as an ideal means to stimulate host community participation in tourism development, particularly in developing countries (Hampton, 2005; Tosun, 2006). The growing literature on entrepreneurship and tourism includes relatively few studies that empirically explore and identify the entrepreneurial process in tourism. While stimulating the emergence of indigenous tourism entrepreneurs requires an understanding of the entrepreneurial process, the entrepreneurial process in tourism remains unclear, due to the lack of research on the phenomenon (Koh, 2006). The current study, therefore, sought to provide insights into entrepreneurial process in the tourism industry, the context in which the process occurs, and the entrepreneurial strategies that support the process, especially from an indigenous entrepreneur’s perspective. The study was conducted in five tourist destinations on Lombok Island, Indonesia. Twenty-eight host community members, twenty-one owner-managers of small tourism enterprises and seven other tourism stakeholders, were selected as research participants, and were engaged in the crystallisation process throughout the study. Observation was made in the twenty-one enterprises.
Sharp spectral asymptotics for non-reversible metastable diffusion processes
Creators: name: Peutrec, Dorian Le
name: Michel, Laurent
Publisher: name: arXiv
Year: 2019
Subjects: subject: Spectral Theory (math.SP)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Let $U_h:\mathbb R^{d}\to \mathbb R^{d}$ be a smooth vector field and consider the associated overdamped Langevin equation $$dX_t=-U_h(X_t)\,dt+\sqrt{2h}\,dB_t$$ in the low temperature regime $h\rightarrow 0$. In this work, we study the spectrum of the associated diffusion $L=-hΔ+U_h\cdot\nabla$ under the assumptions that $U_h=U_{0}+hν$, where the vector fields $U_{0}:\mathbb R^{d}\to \mathbb R^{d}$ and $ν:\mathbb R^{d}\to \mathbb R^{d}$ are independent of $h\in(0,1]$, and that the dynamics admits $e^{-\frac Vh}$ as an invariant measure for some smooth function $V:\mathbb{R}^d\rightarrow\mathbb{R}$. Assuming additionally that $V$ is a Morse function admitting $n_0$ local minima, we prove that there exists $ε>0$ such that in the limit $h\to 0$, $L$ admits exactly $n_0$ eigenvalues in the strip $\{0\leq \operatorname{Re}(z)< ε\}$, which have moreover exponentially small moduli. Under a generic assumption on the potential barriers of the Morse function $V$, we also prove that the asymptotic behaviors of these small eigenvalues are given by Eyring-Kramers type formulas.
Additional file 5: of Clinical characteristics and outcomes during a severe influenza season in China during 2017â 2018
Creators: name: Fu, Xiaofang
name: Zhou, Yuqing
name: Wu, Jie
name: Liu, Xiaoxiao
name: Ding, Cheng
name: Huang, Chenyang
name: Zheng, Shufa
name: Vijaykrishna, Dhanasekaran
name: Chen, Yu
name: Li, Lanjuan
name: Yang, Shigui
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Pharmacology
subject: Sociology
subject: FOS: Sociology
subject: Developmental Biology
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences

description: Table S2. Antiviral therapy and outcomes of inpatients with different subtypes of influenza viruses during the 2011â 2018 seasons. (PDF 64 kb)
title: Minuartia sedoides
title: Zwerg-Miere (Minuartia sedoides)
titleType: AlternativeTitle
Creators: name: Schulz, Herbert
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2006
Subjects: subject: Diasammlung Herbert Schulz
subject: 580

description: Enthält 3 Bilder der Zwerg-Miere.
ISOLATION AND MOLECULAR IDENTIFICATION OF HYDRATE SURFACE ACTIVE COMPONENTS IN PETROLEUM ACID FRACTIONS
Creators: name: Erstad, Kristin
name: Høiland, Sylvi
name: Barth, Tanja
name: Fotland, Per
Publisher: name: The University of British Columbia
Year: 2008

description: The anti-agglomerating hydrate behavior observed for some crude oils has previously been related to crude oil composition and to surface adsorption mechanisms. Petroleum acids derived from some crude oils have been found able to convert systems with initially high risk of plugging into easily flowable dispersions. In this work, acid fractions are isolated from three oils with low tendency to form hydrate plugs and from two oils associated with high risk of hydrate plugging by using an ion-exchange resin. The extracts are further separated into four sub-fractions by solid phase extraction (SPE). The chemical composition of the fractions is studied by means of HPLC, GPC, FTIR- and UV/VIS spectroscopy and elemental analysis. The distribution of chemical compound classes in the fractions differs between the non-plugging and plugging oils, and the differences are most distinctive in one of the sub-fractions. The results imply that acid sub-fractions holding a significant proportion of more weakly polar compounds, like ester functionalities, are important for how the hydrate surfaces and the oil phase interact.
Conductance of gated junctions as a probe of topological interface states
Creators: name: Thareja, Eklavya
name: Vekhter, Ilya
name: Asmar, Mahmoud M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Energy dispersion and spin orientation of the protected states at interfaces between topological insulators (TIs) and non-topological materials depend on the charge redistribution, strain, and atomic displacement at the interface. Knowledge of these properties is essential for applications of topological compounds, but direct access to them in the interface geometry is difficult. We show that conductance of a gated double junction at the surface of a topological insulator exhibits oscillations and a quasi-linear decay as a function of gate voltage in different regimes. These give the values for the quasiparticle velocities along and normal to the junction in the interface region, and determine the symmetry of the topological interface states. The results are insensitive to the boundary conditions at the junction.
State Extended Uncertainty Relations
Creators: name: Trifonov, D. A.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A scheme for construction of uncertainty relations (UR) for n observables and m states is presented. Several lowest order UR are displayed and briefly discussed. For two states |ψ> and |ϕ> and canonical observables the (entangled) extension of Heisenberg UR reads [Δp(ψ)]^2[Δq(ϕ)]^2 + [Δp(ϕ)]^2[Δq(ψ)]^2 \geq 1/2. Some possible applications of the new inequalities are noted.
description: LaTex, 6 pages 15x23cm text, No figures
title: Spergularia salina
title: Salz-Schuppenmiere (Spergularia salina)
titleType: AlternativeTitle
Creators: name: Schulz, Herbert
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2006
Subjects: subject: Diasammlung Herbert Schulz
subject: 580

description: Enthält 4 Bilder der Salz-Schuppenmiere.
Coherent States Measurement Entropy
Creators: name: Kwapien, Jaroslaw
name: Slomczynski, Wojciech
name: Zyczkowski, Karol
Publisher: name: arXiv
Year: 1996
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Coherent states (CS) quantum entropy can be split into two components. The dynamical entropy is linked with the dynamical properties of a quantum system. The measurement entropy, which tends to zero in the semiclassical limit, describes the unpredictability induced by the process of a quantum approximate measurement. We study the CS--measurement entropy for spin coherent states defined on the sphere discussing different methods dealing with the time limit $n \to \infty$. In particular we propose an effective technique of computing the entropy by iterated function systems. The dependence of CS--measurement entropy on the character of the partition of the phase space is analysed.
description: revtex, 22 pages, 14 figures available upon request (e-mail: kwapien@castor.if.uj.edu.pl). Submitted to J.Phys. A
Separation of variables in the Kramers equation
Creators: name: Zhdanov, Renat
name: Zhalij, Alexander
Publisher: name: arXiv
Year: 1999
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 35Q40; 60H15

description: We consider the problem of separation of variables in the Kramers equation admitting a non-trivial symmetry group. Provided the external potential $V(x)$ is at most quadratic, a complete solution of the problem of separation of variables is obtained. Furthermore, we construct solutions of the Kramers equation with separated variables in explicit form.
description: 21 pages, LaTeX
ForestDSH: A Universal Hash Design for Discrete Probability Distributions
Creators: name: Davoodi, Arash Gholami
name: Chang, Sean
name: Yoo, Hyun Gon
name: Baweja, Anubhav
name: Mongia, Mihir
name: Mohimani, Hosein
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: In this paper, we consider the problem of classification of $M$ high dimensional queries $y^1,\cdots,y^M\in B^S$ to $N$ high dimensional classes $x^1,\cdots,x^N\in A^S$ where $A$ and $B$ are discrete alphabets and the probabilistic model that relates data to the classes $P(x,y)$ is known. This problem has applications in various fields including the database search problem in mass spectrometry. The problem is analogous to the nearest neighbor search problem, where the goal is to find the data point in a database that is the most similar to a query point. The state of the art method for solving an approximate version of the nearest neighbor search problem in high dimensions is locality sensitive hashing (LSH). LSH is based on designing hash functions that map near points to the same buckets with a probability higher than random (far) points. To solve our high dimensional classification problem, we introduce distribution sensitive hashes that map jointly generated pairs $(x,y)\sim P$ to the same bucket with probability higher than random pairs $x\sim P^A$ and $y\sim P^B$, where $P^A$ and $P^B$ are the marginal probability distributions of $P$. We design distribution sensitive hashes using a forest of decision trees and we show that the complexity of search grows with $O(N^{λ^*(P)})$ where $λ^*(P)$ is expressed in an analytical form. We further show that the proposed hashes perform faster than state of the art approximate nearest neighbor search methods for a range of probability distributions, in both theory and simulations. Finally, we apply our method to the spectral library search problem in mass spectrometry, and show that it is an order of magnitude faster than the state of the art methods.
description: 45 pages,11 figures
A GPU-accelerated package for simulation of flow in nanoporous source rocks with many-body dissipative particle dynamics
Creators: name: Xia, Yidong
name: Blumers, Ansel
name: Li, Zhen
name: Luo, Lixiang
name: Tang, Yu-Hang
name: Kane, Joshua
name: Huang, Hai
name: Andrew, Matthew
name: Deo, Milind
name: Goral, Jan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Mesoscopic simulations of hydrocarbon flow in source shales are challenging, in part due to the heterogeneous shale pores with sizes ranging from a few nanometers to a few micrometers. Additionally, the sub-continuum fluid-fluid and fluid-solid interactions in nano- to micro-scale shale pores, which are physically and chemically sophisticated, must be captured. To address those challenges, we present a GPU-accelerated package for simulation of flow in nano- to micro-pore networks with a many-body dissipative particle dynamics (mDPD) mesoscale model. Based on a fully distributed parallel paradigm, the code offloads all intensive workloads on GPUs. Other advancements, such as smart particle packing and no-slip boundary condition in complex pore geometries, are also implemented for the construction and the simulation of the realistic shale pores from 3D nanometer-resolution stack images. Our code is validated for accuracy and compared against the CPU counterpart for speedup. In our benchmark tests, the code delivers nearly perfect strong scaling and weak scaling (with up to 512 million particles) on up to 512 K20X GPUs on Oak Ridge National Laboratory's (ORNL) Titan supercomputer. Moreover, a single-GPU benchmark on ORNL's SummitDev and IBM's AC922 suggests that the host-to-device NVLink can boost performance over PCIe by a remarkable 40\%. Lastly, we demonstrate, through a flow simulation in realistic shale pores, that the CPU counterpart requires 840 Power9 cores to rival the performance delivered by our package with four V100 GPUs on ORNL's Summit architecture. This simulation package enables quick-turnaround and high-throughput mesoscopic numerical simulations for investigating complex flow phenomena in nano- to micro-porous rocks with realistic pore geometries.
Metal-poor Stars Observed with the Automated Planet Finder Telescope. II. Chemodynamical Analysis of Six Low-Metallicity Stars in the Halo System of the Milky Way
Creators: name: Mardini, Mohammad K.
name: Placco, Vinicius M.
name: Taani, Ali
name: Li, Haining
name: Zhao, Gang
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this work, we study the chemical compositions and kinematic properties of six metal-poor stars with [Fe/H] $< -2.5$ in the Galactic halo. From high-resolution (R $\sim$~110,000) spectroscopic observations obtained with the Lick/APF, we determined individual abundances for up to 23 elements, to quantitatively evaluate our sample. We identify two carbon-enhanced metal-poor stars (J1630+0953 and J2216+0246) without enhancement in neutron-capture elements (CEMP-no stars), while the rest of our sample stars are carbon-intermediate. By comparing the light-element abundances of the CEMP stars with predicted yields from non-rotating zero-metallicity massive-star models, we find that possible the progenitors of J1630+0953 and J2216+0246 could be in the 13-25 M$_{\odot}$ mass range, with explosion energies 0.3-1.8$ \times 10^{51}$ erg. In addition, the detectable abundance ratios of light and heavy elements suggest that our sample stars are likely formed from a well-mixed gas cloud, which is consistent with previous studies. We also present a kinematic analysis, which suggests that most of our program stars likely belong to the inner-halo population, with orbits passing as close as $\sim$ 2.9 kpc from the Galactic center. We discuss the implications of these results on the critical constraints on the origin and evolution of CEMP stars, as well as the nature of the Population III progenitors of the lowest metallicity stars in our Galaxy.
X-Ray Spectral Variability Signatures of Flares in BL Lac Objects
Creators: name: Boettcher, M.
name: Chiang, J.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We are presenting a detailed parameter study of the time-dependent electron injection and kinematics and the self-consistent radiation transport in jets of intermediate and low-frequency peaked BL Lac objects. Using a time-dependent, combined synchrotron-self-Compton and external-Compton jet model, we study the influence of variations of several essential model parameters, such as the electron injection compactness, the relative contribution of synchrotron to external soft photons to the soft photon compactness, the electron-injection spectral index, and the details of the time profiles of the electron injection episodes giving rise to flaring activity. In the analysis of our results, we focus on the expected X-ray spectral variability signatures in a region of parameter space particularly well suited to reproduce the broadband spectral energy distributions of intermediate and low-frequency peaked BL Lac objects. We demonstrate that SSC- and external-Compton dominated models for the gamma-ray emission from blazars are producing significantly different signatures in the X-ray variability, in particular in the soft X-ray light curves and the spectral hysteresis at soft X-ray energies, which can be used as a powerful diagnostic to unveil the nature of the high-energy emission from BL Lac objects.
description: 38 pages, including 17 figures; AASTeX 502 format. Accepted for publication in ApJ (vol. 581)