cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Rotation periods of exoplanet host stars
Creators: name: Simpson, Elaine
name: Baliunas, Sallie
name: Henry, Greg
name: Watson, Chris
Publisher: name: arXiv
Year: 2010
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The stellar rotation periods of ten exoplanet host stars have been determined using newly analysed Ca II H & K flux records from Mount Wilson Observatory and Stromgren b, y photometric measurements from Tennessee State University's automatic photometric telescopes (APTs) at Fairborn Observatory. Five of the rotation periods have not previously been reported, with that of HD 130322 very strongly detected at Prot = 26.1 \pm 3.5 d. The rotation periods of five other stars have been updated using new data. We use the rotation periods to derive the line-of-sight inclinations of the stellar rotation axes, which may be used to probe theories of planet formation and evolution when combined with the planetary orbital inclination found from other methods. Finally, we estimate the masses of fourteen exoplanets under the assumption that the stellar rotation axis is aligned with the orbital axis. We calculate the mass of HD 92788 b (28 MJ) to be within the low-mass brown dwarf regime and suggest that this object warrants further investigation to confirm its true nature.
description: Accepted for publication in MNRAS. 15 pages, 11 figures
Merogomphus parvus Kruger
Creators: name: Lieftinck, M. A.
Publisher: name: Zenodo
Year: 1935
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Gomphidae
Merogomphus
Merogomphus parvus

description: **161. Merogomphus parvus (Kruger) - Eastcoast Gvt.: 'Deli. Soekaranda (Kruger. Schmidt).
description: Published as part of Lieftinck, M. A., 1935, A Synopsis of the Odonata (Dragonflies) of Sumatra, pp. 1-23 in Miscellanea Zoologica Sumatrana 1 on page 20, DOI: 10.5281/zenodo.3251875
description: {"references": ["Kruger. L. Die Odonaten von Sumatra. I ~ III. Stett. ent. Zeitg. 59 - 63. 1898 - 1902.", "Schmidt, E. Odonatader Deutschen Iimnologischen Sunda-Expedition. Arch. Hydrobiol. Suppl. 13, Bd. 5. 1934."]}
Star-forming galaxies in low-redshift clusters: Comparison of integrated properties of cluster and field galaxies
Creators: name: Bretherton, C. F.
name: James, P. A.
name: Moss, C.
name: Whittle, M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the effect of the cluster environment on the star formation properties of galaxies in 8 nearby Abell clusters. Star formation properties are determined for individual galaxies using the equivalent width of H alpha plus [NII] line emission from narrow-band imaging. Equivalent width distributions are derived for each galaxy type in each of 3 environments - cluster, supercluster (outside the cluster virial radius) and field. The effects of morphological disturbance on star formation are also investigated. We identify a population of early-type disk galaxies in the cluster population with enhanced star formation compared to their field counterparts. The enhanced cluster galaxies frequently show evidence of disturbance, and the disturbed galaxies show marginal evidence for a higher velocity dispersion, possibly indicative of an infalling population.
description: 9 pages, 10 figures, accepted for publication in Astronomy and Astrophysics
Mesogomphus reinwardti subsp. simplex Lieftinck.
Creators: name: Lieftinck, M. A.
Publisher: name: Zenodo
Year: 1935
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Gomphidae
Mesogomphus
Mesogomphus reinwardti
Mesogomphus reinwardti simplex lieftinck.

description: 162. Mesogomphus reinwardti simplex Lieftinck. - Eastcoast Gvt.: Deli. Medan (Lieftinck). Benkoelen Res.: Lake Ranau distr. & Banflingagoeng (Lieftinck, Schmidt). - Considered as a distinct species by Schmidt.
description: Published as part of Lieftinck, M. A., 1935, A Synopsis of the Odonata (Dragonflies) of Sumatra, pp. 1-23 in Miscellanea Zoologica Sumatrana 1 on page 20, DOI: 10.5281/zenodo.3251875
description: {"references": ["Lieftinck. M. A. Dragonflies (Odonata) from Northeast Sumatra. Misc. Zool. Sum. 34. 1929.", "Schmidt, E. Odonatader Deutschen Iimnologischen Sunda-Expedition. Arch. Hydrobiol. Suppl. 13, Bd. 5. 1934."]}
Observation of the antimatter helium-4 nucleus
Creators: name: STAR Collaboration
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: High-energy nuclear collisions create an energy density similar to that of the universe microseconds after the Big Bang, and in both cases, matter and antimatter are formed with comparable abundance. However, the relatively short-lived expansion in nuclear collisions allows antimatter to decouple quickly from matter, and avoid annihilation. Thus, a high energy accelerator of heavy nuclei is an efficient means of producing and studying antimatter. The antimatter helium-4 nucleus ($^4\bar{He}$), also known as the anti-α ($\barα$), consists of two antiprotons and two antineutrons (baryon number B=-4). It has not been observed previously, although the α particle was identified a century ago by Rutherford and is present in cosmic radiation at the 10% level. Antimatter nuclei with B < -1 have been observed only as rare products of interactions at particle accelerators, where the rate of antinucleus production in high-energy collisions decreases by about 1000 with each additional antinucleon. We present the observation of the antimatter helium-4 nucleus, the heaviest observed antinucleus. In total 18 $^4\bar{He}$ counts were detected at the STAR experiment at RHIC in 10$^9$ recorded Au+Au collisions at center-of-mass energies of 200 GeV and 62 GeV per nucleon-nucleon pair. The yield is consistent with expectations from thermodynamic and coalescent nucleosynthesis models, which has implications beyond nuclear physics.
description: 19 pages, 4 figures. Submitted to Nature. Under media embargo
Statistical Inference: The Big Picture
Creators: name: Kass, Robert E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Other Statistics (stat.OT)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Statistics has moved beyond the frequentist-Bayesian controversies of the past. Where does this leave our ability to interpret results? I suggest that a philosophy compatible with statistical practice, labeled here statistical pragmatism, serves as a foundation for inference. Statistical pragmatism is inclusive and emphasizes the assumptions that connect statistical models with observed data. I argue that introductory courses often mischaracterize the process of statistical inference and I propose an alternative "big picture" depiction.
description: Published in at http://dx.doi.org/10.1214/10-STS337 the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Mobile app development : challenges and opportunities for automated support
Creators: name: Erfani Joorabchi, Mona
Publisher: name: University of British Columbia
Year: 2016

description: Mobile app development is a relatively new phenomenon that is increasing rapidly due to the ubiquity and popularity of smartphones among end-users. As with any new domain, mobile app development has its own set of new challenges. The work presented in this dissertation has focused on improving the state-of-the-art by understanding the current practices and challenges in mobile app development as well as proposing a new set of techniques and tools based on the identified challenges. To understand the current practices, real challenges and issues in mobile development, we first conducted an explorative field study, in which we interviewed 12 senior mobile developers from nine different companies, followed by a semi-structured survey, with 188 respondents from the mobile development community. Next, we mined and quantitatively and qualitatively analyzed 32K non-reproducible bug reports in one industrial and five open-source bug repositories. Then, we performed a large-scale comparative study of 80K iOS and Android app-pairs and 1.7M reviews by mining the Google Play and Apple app stores. Based on the identified challenges, we first proposed a reverse engineering technique that automatically analyzes a given iOS mobile app and generates a state model of the app. Finally, we proposed an automated technique for detecting inconsistencies in the same mobile app implemented for iOS and Android platforms. To measure the effectiveness of the proposed techniques, we evaluated our methods using various industrial and open-source mobile apps. The evaluation results point to the effectiveness of the proposed model generation and mapping techniques in terms of accuracy and inconsistency detection capability.
Onychogomphus geometricus subsp. perplexus Lieftinck 1935, subsp. n.
Creators: name: Lieftinck, M. A.
Publisher: name: Zenodo
Year: 1935
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Gomphidae
Onychogomphus
Onychogomphus geometricus
Onychogomphus geometricus perplexus

description: ** 163. Onychogomphus geometricus perplexus subsp. n. (fig. 2). - Eastcoast Gvt.: 1 ♂. Deli. J. B. Corporaal leg. Holotype in the author's collection (Mus. Amsterdam). Smaller and of slenderer build than typical geometricus from Java. Head and dorsum of synthorax coloured as in the typical race: the isolated yellow antehumeral spot larger. Sides of the thorax with the yellow predominating. so much so. that the sutures only are striped with, black; the entire metepimerum yellow, without posterior black margin. Legs with anterior femora broadly yellow interioriy. Abdomen with the black predominating: median yellow spot on segm. 2-4 isolated. much reduced in size. Basal yellow rings of segm. 3-6 occupying about 1/ 7-1/6 of the length of segments and entirely divided by the black on mid-dorsum. so as to form paired spots; 8-10 black. Anal apps. yellow. sligtly slenderer and longer than in geometricus: branches of app. inf. more strongly bent at base. Length: abd. +,app. 35. hw. 27. pt. 3 mm. This is possibly the same species as Fraser's geometricus from Takengon (At jeh Gvt.) and considered by him a s a local race of that species (Mem. Mus. Roy. His. Nat.. hors serie. -4, 1932). Both agree in having the yellow predominating on the thoracic sides. but much reduced on the abdominal segments. In Fraser's ♂ the inf. app. is said by him to be black. although further in the text the author remarks that it is not different in colour from geometricus This new subspecies is undoubtedly closely allied to geometric us Selys. from Java. of which it may be regarded as a subspecies. As will appear from our sketches. the genitalia and apps. are almost exactly identical in the two races. but the colour-differences are very striking. The amount of variability in the colour-pattern of typical geometricus has been discussed in an earlier paper (Lieftinck. Tijdschr. Ent. 72. 1929). - Among other characters. O. saundersi Selys differs by the black-tipped sup. apps.. by the different shape of the genital hamule. and by the absence of any dorsal interior projections of the inf. app. In O. duaricus. Fraser. the anterior genital hamule is in the form of a long tapering black spine. the branches of the inferior anal app. bear a strongly pointed basal tooth. and the distal 1 /3 of the upper appendages are black in colour.
description: Published as part of Lieftinck, M. A., 1935, A Synopsis of the Odonata (Dragonflies) of Sumatra, pp. 1-23 in Miscellanea Zoologica Sumatrana 1 on page 20, DOI: 10.5281/zenodo.3251875
description: {"references": ["Selys Longchamps. E. d e. Odonates de Sumatra, etc. Ann. Mus. civ. Genova, 27, 1889."]}
Vacuum friction in rotating particles
Creators: name: Manjavacas, A.
name: de Abajo, F. J. García
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the frictional torque acting on particles rotating in empty space. At zero temperature, vacuum friction transforms mechanical energy into light emission and produces particle heating. However, particle cooling relative to the environment occurs at finite temperatures and low rotation velocities. Radiation emission is boosted and its spectrum significantly departed from a hot-body emission profile as the velocity increases. Stopping times ranging from hours to billions of years are predicted for materials, particle sizes, and temperatures accessible to experiment. Implications for the behavior of cosmic dust are discussed.
description: 4 figures, 10 pages, includes paper and supplementary information in the appendix
CAAD system with integrated quantity surveying, energy calculation and LCA
Creators: name: Hermann, ManfredIn: C
name: Kohler, Niklaus
name: Koenig, Holger
name: Luetzkendorf, Thomas
Publisher: name: Karlsruhe
Year: 1998

description: In the framework of the German LEGOE project, an integrated tool
is developed for computer aided architectural design (CAAD),
quantity surveying (catalogue of building elements), life cycle
cost calculation and estimation (construction and
refurbishment), direct energy consumption (heating, hot-water,
electri-city) and environmental impact assessment (mass flows
and effect oriented evaluation). During the design process the
architect works in his usual CAAD environment with building
elements (e.g. one m2 of outer wall) which in turn are composed
of detailed construction specifications, energy and mass flow
coefficients and cost data. These elements are part of an
independent catalogue of elements with all their relevant data.
The different application programs use the same basic data and
write the specific results into a project-specific database
called a PDB which allows the comparison of these data to
reference data from other projects. Evaluation and visualisation
programs refer to the PDB only.
Onychogomphus modcstus subsp. fruhstorferi Lieftinck.
Creators: name: Lieftinck, M. A.
Publisher: name: Zenodo
Year: 1935
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Gomphidae
Onychogomphus
Onychogomphus modcstus
Onychogomphus modcstus fruhstorferi lieftinck.

description: 164. Onychogomphus modcstus fruhstorferi Lieftinck. - Westcoast Res.: Korintji. ♂, Moearasako. 680 m (Ris). S., Lampoeng Res.: Mt. Tanggamoes. Gisting. 500 m. 1 ♀. July 7. 1934. Toxopeus leg.
description: Published as part of Lieftinck, M. A., 1935, A Synopsis of the Odonata (Dragonflies) of Sumatra, pp. 1-23 in Miscellanea Zoologica Sumatrana 1 on page 22, DOI: 10.5281/zenodo.3251875
description: {"references": ["Ris. F. Odonaten von Sumatra, gesammelt von Edward Jacobson. Zool. Meded. Leiden. 10. 1927."]}
Conformal Wasserstein distances: comparing surfaces in polynomial time
Creators: name: Lipman, Yaron
name: Daubechies, Ingrid
Publisher: name: arXiv
Year: 2011
Subjects: subject: Differential Geometry (math.DG)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: We present a constructive approach to surface comparison realizable by a polynomial-time algorithm. We determine the "similarity" of two given surfaces by solving a mass-transportation problem between their conformal densities. This mass transportation problem differs from the standard case in that we require the solution to be invariant under global Möbius transformations. We present in detail the case where the surfaces to compare are disk-like; we also sketch how the approach can be generalized to other types of surfaces.
description: 23 pages, 3 figures
Magnetoelectric effects in an organo-metallic quantum magnet
Creators: name: Zapf, V. S.
name: Nasreen, F.
name: Wolff-Fabris, F.
name: Paduan-Filho, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We observe a bilinear magnetic field-induced electric polarization of 50 $μC/m^2$ in single crystals of NiCl$_2$-4SC(NH$_2$)$_2$ (DTN). DTN forms a tetragonal structure that breaks inversion symmetry, with the highly polar thiourea molecules all tilted in the same direction along the c-axis. Application of a magnetic field between 2 and 12 T induces canted antiferromagnetism of the Ni spins and the resulting magnetization closely tracks the electric polarization. We speculate that the Ni magnetic forces acting on the soft organic lattice can create significant distortions and modify the angles of the thiourea molecules, thereby creating a magnetoelectric effect. This is an example of how magnetoelectric effects can be constructed in organo-metallic single crystals by combining magnetic ions with electrically polar organic elements.
description: 3 pages, 3 figures
Electron Spin Resonance of the ferromagnetic Kondo lattice CeRuPO
Creators: name: Förster, T.
name: Sichelschmidt, J.
name: Krellner, C.
name: Geibel, C.
name: Steglich, F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The spin dynamics of the ferromagnetic Kondo lattice CeRuPO is investigated by Electron Spin Resonance (ESR) at microwave frequencies of 1, 9.4, and 34~GHz. The measured resonance can be ascribed to a rarely observed bulk Ce3+ resonance in a metallic Ce compound and can be followed below the ferromagnetic transition temperature Tc=14 K. At T>Tc the interplay between the RKKY-exchange interaction and the crystal electric field anisotropy determines the ESR parameters. Near Tc the spin relaxation rate is influenced by the critical fluctuations of the order parameter.
description: This is an article accepted for publication in Journal of Physics: Condensed Matter
Muddling through together : educators navigating cisnormativity while working with trans and gender-nonconforming students
Creators: name: Frohard-Dourlent, Hélène
Publisher: name: University of British Columbia
Year: 2016

description: There has been increased attention on transgender and gender-nonconforming youth and the obstacles that they face in schools, especially in terms of peer harassment and access to washrooms. Yet little is known about those who can potentially help create more hospitable school cultures for these students, including teachers, administrators, and counsellors. This dissertation fills this gap by exploring the meanings that educators produce about their experiences working with trans and gender-nonconforming students. I draw on 62 interviews conducted with school staff who have worked with trans and gender-nonconforming students in four school districts in British Columbia. By focusing on discursive practices, this dissertation illuminates the role that cisnormativity, or the belief that the fixed and binary nature of gender is an unchangeable fact, plays in shaping the way that educators respond to the presence of trans and gender-nonconforming students and make sense of their experiences. Although the educators in this study endeavor to be supportive of these students, their efforts are constrained by cisnormative modes of thinking and by dominant discourses of diversity, safety, bullying, heteronormativity as well as what it means to be a good teacher or a young person. An analysis of educators’ talk also makes clear that they have to contend with institutional patterns and practices that can limit their capacity to imagine and enact change. In particular, dominant discursive frameworks and institutional constraints often work to enable understandings of change that focus on accommodating individual students without disrupting the normative status quo of schools. Given that this normative status quo creates inequities and exclusions in educational spaces, it is crucial to think about possibilities for intervening into dominant discourses in order to address the norms and institutional practices they help constitute. To this effect, I highlight moments in the stories of educators that offer some potential for disruption and resistance of discourses and their material effects. These moments are an invitation to consider what it could look like to move beyond accommodating individuals to consider instead how to shift school cultures to make them more hospitable to students in all of the complexities of their gendered embodiments.
Onychogomphus saundersi
Creators: name: Lieftinck, M. A.
Publisher: name: Zenodo
Year: 1935
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Gomphidae
Onychogomphus
Onychogomphus saundersi

description: 165. Onychogomphus saundersi subspec. - Eastcoast G v t.: Deli. Scekaranda (Kruger). Westcoast Res.: Korintji. ♂. Tamiai. 800 m. near Merangin River (Ris). - I have not seen Sumatran specimens.
description: Published as part of Lieftinck, M. A., 1935, A Synopsis of the Odonata (Dragonflies) of Sumatra, pp. 1-23 in Miscellanea Zoologica Sumatrana 1 on page 22, DOI: 10.5281/zenodo.3251875
description: {"references": ["Kruger. L. Die Odonaten von Sumatra. I ~ III. Stett. ent. Zeitg. 59 - 63. 1898 - 1902.", "Ris. F. Odonaten von Sumatra, gesammelt von Edward Jacobson. Zool. Meded. Leiden. 10. 1927."]}
Computational analysis of ribonucleic acid basepairs in RNA structure and RNA-RNA interactions
Creators: name: Lai, Daniel
Publisher: name: University of British Columbia
Year: 2016

description: Ribonucleic acids (RNA), are an essential part of cellular function, transcribed from DNA and translated into protein. Rather than a passive informational medium, RNA can also be highly functional and regulatory. Certain RNAs fold into specific structures giving it enzymatic properties, while others bind to specific targets to guide regulatory processes. With the advent of next-generation sequencing, a large number of novel non-coding RNAs have been discovered through whole-transcriptome sequencing. Many efforts have been made to study the structure and binding partners of these novel RNAs, in order to determine their function and roles. This work begins with a description of my R package R4RNA for manipulating RNA basepair data, the building blocks of RNA structure and RNA binding. The package deals with the input/output and manipulation of RNA basepair and sequence data, along with statistical and visualization methods for evaluation, interpretation and presentation. We also describe R-chie, a visualization tool and web server built on R4RNA that visualizes complex RNA basepairs in conjunction with sequence alignments. We then conduct the largest known evaluation of RNA-RNA interaction methods to date, running state-of-the-art tools on curated experimentally validated datasets. We end with a review of cotranscriptional RNA basepair formation, summarizing biological, theoretical and computational methods for the process, and future directions for improving classical methods in RNA structure prediction. All content chapters of this thesis has been peer-reviewed and published. The work on R4RNA has led to two publications, with the package used to great visual effect by various publications and also adopted by the RNA structure database Rfam. My assessment of RNA-RNA interaction is at present the only published evaluation of its kind, and will hopefully become a benchmark for future tool development and a guide to selecting appropriate tools and algorithms. Our published review on RNA cotranscriptional folding is well-received, being the first review specifically on its topic.
A Kronecker-Weyl theorem for subsets of abelian groups
Creators: name: Dikranjan, Dikran
name: Shakhmatov, Dmitri
Publisher: name: arXiv
Year: 2010
Subjects: subject: Group Theory (math.GR)
subject: Dynamical Systems (math.DS)
subject: General Topology (math.GN)
subject: Logic (math.LO)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: Primary: 20K30, Secondary: 03E15, 11K36, 11K60, 22A05, 37B05, 54D65, 54E52

description: Let N be the set of non-negative integer numbers, T the circle group and c the cardinality of the continuum. Given an abelian group G of size at most 2^c and a countable family F of infinite subsets of G, we construct "Baire many" monomorphisms p: G --> T^c such that p(E) is dense in {y in T^c : ny=0} whenever n in N, E in F, nE={0} and {x in E: mx=g} is finite for all g in G and m such that n=mk for some k in N--{1}. We apply this result to obtain an algebraic description of countable potentially dense subsets of abelian groups, thereby making a significant progress towards a solution of a problem of Markov going back to 1944. A particular case of our result yields a positive answer to a problem of Tkachenko and Yaschenko. Applications to group actions and discrete flows on T^c, diophantine approximation, Bohr topologies and Bohr compactifications are also provided.
Distributed Inference and Query Processing for RFID Tracking and Monitoring
Creators: name: Cao, Zhao
name: Sutton, Charles
name: Diao, Yanlei
name: Shenoy, Prashant
Publisher: name: arXiv
Year: 2011
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: In this paper, we present the design of a scalable, distributed stream processing system for RFID tracking and monitoring. Since RFID data lacks containment and location information that is key to query processing, we propose to combine location and containment inference with stream query processing in a single architecture, with inference as an enabling mechanism for high-level query processing. We further consider challenges in instantiating such a system in large distributed settings and design techniques for distributed inference and query processing. Our experimental results, using both real-world data and large synthetic traces, demonstrate the accuracy, efficiency, and scalability of our proposed techniques.
description: VLDB2011
Chlorogomphus
Creators: name: Lieftinck, M. A.
Publisher: name: Zenodo
Year: 1935
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Cordulegastridae
Chlorogomphus

description: **166. Chlorogomphus spec. novo - In the Leiden Museum is a single ♀ of an undescribed species. with hyaline wings. from Padangpandjang (Westcoast Res.). It is hoped to publish a description of this insect at some other place.
description: Published as part of Lieftinck, M. A., 1935, A Synopsis of the Odonata (Dragonflies) of Sumatra, pp. 1-23 in Miscellanea Zoologica Sumatrana 1 on page 22, DOI: 10.5281/zenodo.3251875
Aspects of Bifurcation Theory for Piecewise-Smooth, Continuous Systems
Creators: name: Simpson, D. J. W.
name: Meiss, J. D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Systems that are not smooth can undergo bifurcations that are forbidden in smooth systems. We review some of the phenomena that can occur for piecewise-smooth, continuous maps and flows when a fixed point or an equilibrium collides with a surface on which the system is not smooth. Much of our understanding of these cases relies on a reduction to piecewise linearity near the border-collision. We also review a number of codimension-two bifurcations in which nonlinearity is important.
description: pdfLaTeX, 9 figures
Chlorogomphus magnificus Selys.
Creators: name: Lieftinck, M. A.
Publisher: name: Zenodo
Year: 1935
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Cordulegastridae
Chlorogomphus
Chlorogomphus magnificus

description: 167. Chlorogomphus magnificus Selys. - "Sumatra" (SeIys). Benkoelen Res. (Fraser)..
description: Published as part of Lieftinck, M. A., 1935, A Synopsis of the Odonata (Dragonflies) of Sumatra, pp. 1-23 in Miscellanea Zoologica Sumatrana 1 on page 22, DOI: 10.5281/zenodo.3251875
Supersymmetry identifies molecular Stark states whose eigenproperties can be obtained analytically
Creators: name: Lemeshko, Mikhail
name: Mustafa, Mustafa
name: Kais, Sabre
name: Friedrich, Bretislav
Publisher: name: arXiv
Year: 2011
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Mathematical Physics (math-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We made use of supersymmetric (SUSY) quantum mechanics to find a condition under which the Stark effect problem for a polar and polarizable closed-shell diatomic molecule subject to collinear electrostatic and nonresonant radiative fields becomes exactly solvable. The condition, $Δω= \frac{ω^2}{4 (m+1)^2}$, connects values of the dimensionless parameters $ω$ and $Δω$ that characterize the strengths of the permanent and induced dipole interactions of the molecule with the respective fields. The exact solutions are obtained for the $|\tilde{J}=m,m;ω,Δω>$ family of "stretched" states. The field-free and strong-field limits of the combined-fields problem were found to exhibit supersymmetry and shape-invariance, which is indeed the reason why they are analytically solvable. By making use of the analytic form of the $|\tilde{J}=m,m;ω,Δω>$ wavefunctions, we obtained simple formulae for the expectation values of the space-fixed electric dipole moment, the alignment cosine, the angular momentum squared, and derived a "sum rule" which combines the above expectation values into a formula for the eigenenergy. The analytic expressions for the characteristics of the strongly oriented and aligned states provide a direct access to the values of the interaction parameters required for creating such states in the laboratory.
description: 12 pages, 4 figures, 1 table
The catastrophic 1456 multiple earthquake: CFF test of interaction among deep oblique strike-slip faults in southern Italy
Creators: name: Fracassi, Umberto
name: Perniola, Bruna
Publisher: name: Zenodo
Year: 2006

description: In December 1456-January 1457 a major earthquake sequence took place across the central and southern Apennines (southern Italy, Calabrian Arc excluded), including southeastern Apulia. A recent re-evaluation of the (a) revised damage pattern for this multiple earthquake, (b) deeper seismicity of the southern Apennines – Adriatic foreland interface and (c) deep-seated regional E-W structures, led to the identification of at least four seismogenic sources, responsible for the main sub-events of the multiple 1456 earthquake. Based on various seismological, macroseismic and tectonic constraints, these causative faults are thought to exhibit an oblique right-lateral motion along fault segments roughly E-W oriented. Such segments are portions of well-known inherited regional E-W trending shear zones (like the Molise-Gondola shear zone), at various latitudes between (from north to south) the Maiella Mts. and the Vulture volcanic complex. This system would therefore imply the cascade reactivation of such shear zones favorably oriented with respect to present stress field, with a transtensional mechanism. More than one catastrophic historical earthquake that occurred in southern Italy suggests the nearly simultaneous activation of multiple sources across widely spaced (+/- 30 km) portions of independent E-W faults. Being the strongest (by magnitude and damage area) among these major earthquakes, the 1456 sequence can be considered as a template for such mechanism of multiple activation of distant sources yet within a short time window. This hypothesis invokes a possible stress interaction between multiple sources falling within neighboring domains. We investigated Coulomb stress changes related to the main sub-events of the multiple 1456 earthquake to analyze fault interaction and stress transfer mechanisms. An evident positive correlation between the calculated Coulomb stress increase and two major seismogenic sources is found. Therefore, the spatial redistribution and enhancement of static stress caused by the stronger events may promote rupture on adjacent faults that are close to the failure threshold. A more general case may be considered imposing a pre-existing stress field or assuming different values for the friction coefficient. To the extents of present knowledge and investigation, these E-W trending earthquake sources are active between ca. 10 and 20 km at depth in the sector of the southern Apennines east of the chain axis, that is to say in the seismogenic macroregion bounded by the thrustbelt (to the west) and by the Apulian foreland (to the east). The stress patterns caused by these faults are consistent with the large NW-SE trending pure extensional sources found along the southern Apennines axis.
A cogging-torque-assisted motor drive for internal combustion engine valves
Creators: name: Reinholz, Bradley
Publisher: name: University of British Columbia
Year: 2016

description: Internal combustion engine valve trains form the interface between the intake and exhaust systems and largely contribute to the overall engine performance, emissions and efficiency. Most modern engines use a camshaft to operate the valve train, but suffer from suboptimal performance since valve events cannot be dynamically altered during transient engine operation. Electromechanical valve actuation is a type of variable valve actuation that uses electromechanical actuators to replace the camshaft in an internal combustion engine. Electromechanical valve actuation promises to improve engine performance, reduce fuel consumption and lower harmful emissions by allowing for fully-independent control of the intake and exhaust valves. A major goal of electromechanical valve actuation is to achieve fully-independent valve control while minimizing the impact on concomitant systems, such as the charging and cooling systems. A new type of electromagnetic actuator is presented in this thesis, which uses cogging torque to recover kinetic energy in the form of a magnetic field. Cogging torque allows the presented actuator to be much more efficient and compact compared to other electromechanical valve actuators that use external mechanical spring systems. To utilize cogging torque effectively, design motivations are initially established and used to conceptualize a practical and efficient design. The proposed design is first simulated to predict its performance and later is experimentally validated using a fabricated prototype. The results of the experiments reveal a highly efficient and fast actuator design compared to other electromechanical actuators found in literature. The energy loss is further reduced by generating an optimal kinematic trajectory using the Nelder-Mead algorithm. The optimal kinematic trajectory enabled the proposed actuator design to be the most efficient electromechanical valve actuator found in literature. The results presented show the novel actuator design reduced losses by over 40% when compared with the most efficient electromechanical valve actuator published in literature and by over 70% when compared with a conventional camshaft. The conclusions of this thesis suggest a cogging-torque-assisted actuator could be feasibly retrofitted into an existing engine with only minor modifications due to its compact and highly efficient nature.
Continuum Limit of $B_K$ from 2+1 Flavor Domain Wall QCD
Creators: name: Aoki, Y.
name: Arthur, R.
name: Blum, T.
name: Boyle, P. A.
name: Brömmel, D.
name: Christ, N. H.
name: Dawson, C.
name: Izubuchi, T.
name: Jung, C.
name: Kelly, C.
name: Kenway, R. D.
name: Lightman, M.
name: Mawhinney, R. D.
name: Ohta, Shigemi
name: Sachrajda, C. T.
name: Scholz, E. E.
name: Soni, A.
name: Sturm, C.
name: Wennekers, J.
name: Zhou, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We determine the neutral kaon mixing matrix element $B_K$ in the continuum limit with 2+1 flavors of domain wall fermions, using the Iwasaki gauge action at two different lattice spacings. These lattice fermions have near exact chiral symmetry and therefore avoid artificial lattice operator mixing. We introduce a significant improvement to the conventional NPR method in which the bare matrix elements are renormalized non-perturbatively in the RI-MOM scheme and are then converted into the MSbar scheme using continuum perturbation theory. In addition to RI-MOM, we introduce and implement four non-exceptional intermediate momentum schemes that suppress infrared non-perturbative uncertainties in the renormalization procedure. We compute the conversion factors relating the matrix elements in this family of RI-SMOM schemes and MSbar at one-loop order. Comparison of the results obtained using these different intermediate schemes allows for a more reliable estimate of the unknown higher-order contributions and hence for a correspondingly more robust estimate of the systematic error. We also apply a recently proposed approach in which twisted boundary conditions are used to control the Symanzik expansion for off-shell vertex functions leading to a better control of the renormalization in the continuum limit. We control chiral extrapolation errors by considering both the NLO SU(2) chiral effective theory, and an analytic mass expansion. We obtain $B_K^{\msbar}(3 GeV) = 0.529(5)_{stat}(15)_χ(2)_{FV}(11)_{NPR}$. This corresponds to $\hat{B}_K = 0.749(7)_{stat}(21)_χ(3)_{FV}(15)_{NPR}$. Adding all sources of error in quadrature we obtain $\hat{B}_K = 0.749(27)_{combined}$, with an overall combined error of 3.6%.
description: 65 pages
Oligoaeschna Selys 1889
Creators: name: Lieftinck, M. A.
Publisher: name: Zenodo
Year: 1935
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Aeshnidae
Oligoaeschna

description: 168. Oligoaeschna (= Jagoria Karsch. nom. preocc,) modiglianii Selys. - Eastcoast Gvt.: Deli. Soekaranda (Kruger).
description: Published as part of Lieftinck, M. A., 1935, A Synopsis of the Odonata (Dragonflies) of Sumatra, pp. 1-23 in Miscellanea Zoologica Sumatrana 1 on page 22, DOI: 10.5281/zenodo.3251875
description: {"references": ["Karsch, F. Sumatranische Odonaten. gesammelt .... in Bindjei, Deli. Ent. Nachr .. 17. 1891.", "Selys Longchamps. E. d e. Odonates de Sumatra, etc. Ann. Mus. civ. Genova, 27, 1889.", "Kruger. L. Die Odonaten von Sumatra. I ~ III. Stett. ent. Zeitg. 59 - 63. 1898 - 1902."]}
Quantum Fluctuations and Dynamic Clustering of Fluctuating Cooper Pairs
Creators: name: Glatz, A.
name: Varlamov, A. A.
name: Vinokur, V. M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We derive exact expressions for the fluctuation conductivity in two dimensional superconductors as a function of temperature and magnetic field in the whole fluctuation region above the upper critical field H_{c2}(T). Focusing on the vicinity of the quantum phase transition near zero temperature, we propose that as the magnetic field approaches the line near H_{c2}(0) from above, a peculiar dynamic state consisting of clusters of coherently rotating fluctuation Cooper-pairs forms and estimate the characteristic size and lifetime of such clusters. We find the zero temperature magnetic field dependence of the the transverse magnetoconductivity above H_{c2}(0) in layered superconductors.
description: 5 pages, 3 figures
Scale dependent bias from primordial non-Gaussianity with trispectrum
Creators: name: Gong, Jinn-Ouk
name: Yokoyama, Shuichiro
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the scale dependent bias of the halo power spectrum arising from primordial non-Gaussianity. We present an analytic result of the halo bias including up to the trispectrum contributions. We find the scale dependent bias opens a new possibility of probing the relation between the non-linearity parameters $\fnl$ and $\tnl$.
description: 5 pages, 3 figures, submitted to MNRAS
Inflaton Fragmentation and Oscillon Formation in Three Dimensions
Creators: name: Amin, Mustafa A.
name: Easther, Richard
name: Finkel, Hal
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Analytical arguments suggest that a large class of scalar field potentials permit the existence of oscillons -- pseudo-stable, non-topological solitons -- in three spatial dimensions. In this paper we numerically explore oscillon solutions in three dimensions. We confirm the existence of these field configurations as solutions to the Klein-Gorden equation in an expanding background, and verify the predictions of Amin and Shirokoff for the characteristics of individual oscillons for their model. Further, we demonstrate that significant numbers of oscillons can be generated via fragmentation of the inflaton condensate, consistent with the analysis of Amin. These emergent oscillons can easily dominate the post-inflationary universe. Finally, both analytic and numerical results suggest that oscillons are stable on timescales longer than the post-inflationary Hubble time. Consequently, the post-inflationary universe can contain an effective matter-dominated phase, during which it is dominated by localized concentrations of scalar field matter.
description: See http://easther.physics.yale.edu/downloads.html for numerical codes. Visualizations available at http://www.mit.edu/~mamin/oscillons.html and http://easther.physics.yale.edu/fields.html V2 Minor fixes to reference list
A Framework for Digital Forensic in Joint Heterogeneous Cloud Computing.pdf
Creators: name: Umar, Zayyanu
Publisher: name: figshare
Year: 2022
Subjects: subject: Distributed Computing
subject: FOS: Computer and information sciences
subject: 80501 Distributed and Grid Systems

description: This study originates a new framework and an algorithm that enable detecting
crime and locating a scene of a crime for digital investigation (digital forensic) in a joined different Configured cloud
service providers (CSPs) platforms.
Indaeschna grubaueri Forster
Creators: name: Lieftinck, M. A.
Publisher: name: Zenodo
Year: 1935
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Aeshnidae
Indaeschna
Indaeschna grubaueri

description: *169. Indaeschna grubaueri (Forster). - Eastcoast Gvt.: Deli. Sibolangit. 500 m. 1 ♀. July 1921. Docters van Leeuwen leg. S. Lampoeng Res.: Mt. Tanggamoes. Gisting. 450 m, 1 ♀, forest-pool near Waiteboe. Dec. 23. 1934. Mac Gillavry leg.
description: Published as part of Lieftinck, M. A., 1935, A Synopsis of the Odonata (Dragonflies) of Sumatra, pp. 1-23 in Miscellanea Zoologica Sumatrana 1 on page 22, DOI: 10.5281/zenodo.3251875
Twist-4 contributions to the azimuthal asymmetry in SIDIS
Creators: name: Song, Yu-kun
name: Gao, Jian-hua
name: Liang, Zuo-tang
name: Wang, Xin-Nian
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We calculate the differential cross section for the unpolarized semi-inclusive deeply inelastic scattering (SIDIS) process $e^-+N \to e^-+q+X$ in leading order (LO) of perturbative QCD and up to twist-4 in power corrections and study in particular the azimuthal asymmetry $$. The final results are expressed in terms of transverse momentum dependent (TMD) parton matrix elements of the target nucleon up to twist-4. %Under the maximal two-gluon correlation approximation, these TMD parton matrix elements in a nucleus %can be expressed terms of a Gaussian convolution of that in a nucleon with the width given by the jet transport %parameter inside cold nuclei. We also apply it to $e^-+A \to e^-+q+X$ and illustrate numerically the nuclear dependence of the azimuthal asymmetry $$ by using a Gaussian ansatz for the TMD parton matrix elements.
description: 9 pages, afigure
Heliaeschna crassa Kruger.
Creators: name: Lieftinck, M. A.
Publisher: name: Zenodo
Year: 1935
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Aeshnidae
Heliaeschna
Heliaeschna crassa

description: *170. Heliaeschna crassa Kruger. - Eastcoast Gvt.: Deli. Selajang Est.. 1 ♀. April 7. 1932. K. N; zur Muhlen leg. Djambi Res.: Djambi. 1 ♂. July- November. 1929. C. N. ter Laag leg. Palembang Res.: Palembang. 1 ♂. 1905. Dr. H. Schmidt leg. (Mus. Hamburg). S. Lampoeng Res.: Mt. Tanggamoes. Gisting. 500 m. 1 ♂. June 25. 1934. Barkmeyer leg.
description: Published as part of Lieftinck, M. A., 1935, A Synopsis of the Odonata (Dragonflies) of Sumatra, pp. 1-23 in Miscellanea Zoologica Sumatrana 1 on page 22, DOI: 10.5281/zenodo.3251875
Atom state evolution and collapse in ultracold gases during light scattering into a cavity
Creators: name: Mekhov, Igor B.
name: Ritsch, Helmut
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We consider the light scattering from ultracold atoms trapped in an optical lattice inside a cavity. In such a system, both the light and atomic motion should be treated in a fully quantum mechanical way. The unitary evolution of the light-matter quantum state is shown to demonstrate the non-trivial phase dependence, quadratic in the atom number. This is essentially due to the dynamical self-consistent nature of the light modes assumed in our model. The collapse of the quantum state during the photocounting process is analyzed as well. It corresponds to the measurement-induced atom number squeezing. We show that, at the final stage of the state collapse, the shrinking of the width of the atom number distribution behaves exponentially in time. This is much faster than the square root time dependence, obtained for the initial stage of the state collapse. The exponentially fast squeezing appears due to the discrete nature of the atom number distribution.
description: 10 pages, 1 figure
iRobotSurgeon Survey dataset
Creators: name: Jamjoom, Aimun
Publisher: name: Centre for Clinical Brain Science, University of Edinburgh
Year: 2022
Subjects: subject: Surgery
subject: Robotics
subject: Liability
subject: Subjects allied to Medicine::Medical Technology

description: The iRobotSurgeon survey aimed to explore public opinion towards the issue of liability with robotic surgical systems. The survey included five hypothetical scenarios where a patient comes to harm and the respondent needs to determine who they believe is most responsible: the surgeon, the robot manufacturer, the hospital, or another party. A total of 2191 completed surveys were gathered evaluating 10955 individual scenario responses from 78 countries.
Spin-Triplet Vortex State in the Topological Superconductor CuxBi2Se3
Creators: name: Das, Pradip
name: Suzuki, Yusuke
name: Tachiki, Masashi
name: Kadowaki, Kazuo
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report on the observation of bulk superconductivity from dc magnetization measurements in a cylindrical single crystal of CuxBi2Se3. The magnitude of the magnetization in the Meissner state is very small and the magnetic-field dependence of the magnetization just above the lower critical field Hc1 is very different from those of usual type-II superconductors. We studied the character of the vortex state theoretically in a spin-triplet pairing superconductor and compared it with the experimental results. The results showed that, the superconductivity observed in CuxBi2Se3 is consistent with the spin-triplet pairing superconductivity with odd parity. We also observed a rapid relaxation phenomenon of the superconducting diamagnetism.
description: 11 pages, 4 figures, to be published in PRB Rapid Communications