cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ptychopseustis brunneoflavalis Agassiz 2022, sp. n.
Creators: name: Agassiz, David
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Crambidae
Ptychopseustis
Ptychopseustis brunneoflavalis

description: Ptychopseustis brunneoflavalis sp. n.
Imago (fig. 46): Wingspan 14–15 mm. Head ochreous, maxillary palpus ochreous, less than diameter of eye; labial palpus ochreous with black dorsal spot beyond halfway, twice diameter of eye; antenna pale ochreous. Thorax and tegulae pale ochreous. Forewing ground colour ochreous, a broad oblique fuscous fascia before halfway, a pair of dark fuscous dots in disc, a dark fuscous blotch above tornus, its inner edge forming and irregular fascia, a sequence of dots along termen, terminal fringe dark fuscous. Hindwing pale ochreous.
Male genitalia (fig. 79): Uncus evenly tapered with apex rounded, gnathos digitate, about as long as uncus; vlava slender with ventral process before apex with a rounded knob; vinculum with coremata comprising four or five strands evenly curved towards apex. Aedeagus curved back and forth, cornutus weak and linear.
Female genitalia: Not examined.
Diagnosis: Distinguished from other species in the genus by the conspicuous fuscous markings on the forewing as shown in fig 46.
Life history: not known.
Derivation: from the colouration of the forewing.
Distribution: Madagascar.
Type material: Holotype ♂ [Madagascar] Diego Suarez 23.iv.1917 (G. Melou) NHMUK010919119, BM Pyralidae Genitalia slide No. 23245. Two paratypes ♀ iii.1917, same locality as holotype.
Other material examined: MADAGASCAR: Diego Suarez (G. Melou) 1 specimen without abdomen 24.xii.1916, 1♀ 1 without abdomen 8.i.1917, 1 without abdomen 106. ii.1917, 1♀ 19.ii.1917, 1♀ 4.iii.1917, 2♀ 26–28.iii.1917, 2♀ iii–iv.1917, 1♀ iii.1917, 1♀ 16.iv.1917, 1♀ 21.iv.1917, 2♀ 24.i.1917, 1♀ 19.v.1917, 1♂ 1♀ 26.v.1917, 1♂ 18.vi.1917, 1♂ 24.vi.1917, 1♀ 12.vii.1917, 2♂ 2♀ 16.vii.1917, 1♀ 4.ix.1917 slide 23205, 2♂ 10.x.1917, 2♂ 12– 15.ix.1917 including slide 23212 (NHMUK 013698177)(NHMUK).
description: Published as part of Agassiz, David, 2022, The tribe Cybalomiini (Lepidoptera: Pyraloidea, Crambidae, Glaphyrinae) of sub-Saharan Africa, pp. 101-156 in Zootaxa 5174 (2) on page 133, DOI: 10.11646/zootaxa.5174.2.1, http://zenodo.org/record/6986011
Black Hole Perturbation
Creators: name: Mino, Yasushi
name: Sasaki, Misao
name: Shibata, Masaru
name: Tagoshi, Hideyuki
name: Tanaka, Takahiro
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present analytic calculations of gravitational waves from a particle orbiting a black hole. We first review the Teukolsky formalism for dealing with the gravitational perturbation of a black hole. Then we develop a systematic method to calculate higher order post-Newtonian corrections to the gravitational waves emitted by an orbiting particle. As applications of this method, we consider orbits that are nearly circular, including exactly circular ones, slightly eccentric ones and slightly inclined orbits off the equatorial plane of a Kerr black hole and give the energy flux and angular momentum flux formulas at infinity with higher order post-Newtonian corrections. Using a different method that makes use of an analytic series representation of the solution of the Teukolsky equation, we also give a post-Newtonian expanded formula for the energy flux absorbed by a Kerr black hole for a circular orbit.
description: 120 pages ptptex file. To appear in Progress of Theoretical Physics Supplement No.128 (1997) `Perturbative and Numerical Approaches to Gravitational Radiation'
Quantum Creation of an Open Inflationary Universe
Creators: name: Linde, Andrei
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss a dramatic difference between the description of the quantum creation of an open universe using the Hartle-Hawking wave function and the tunneling wave function. Recently Hawking and Turok have found that the Hartle-Hawking wave function leads to a universe with Omega = 0.01, which is much smaller that the observed value of Omega > 0.3. Galaxies in such a universe would be about $10^{10^8}$ light years away from each other, so the universe would be practically structureless. We will argue that the Hartle-Hawking wave function does not describe the probability of the universe creation. If one uses the tunneling wave function for the description of creation of the universe, then in most inflationary models the universe should have Omega = 1, which agrees with the standard expectation that inflation makes the universe flat. The same result can be obtained in the theory of a self-reproducing inflationary universe, independently of the issue of initial conditions. However, there exist two classes of models where Omega may take any value, from Omega > 1 to Omega << 1.
description: 23 pages, 4 figures. New materials are added. In particular, we show that boundary terms do not help to solve the problem of unacceptably small Omega in the new model proposed by Hawking and Turok in hep-th/9803156. A possibility to solve the cosmological constant problem in this model using the tunneling wave function is discussed
Synthesis of heterocycle appended spiro(oxindole-3,2’-pyrrolidine) derivatives from heterocyclic ylidenes and azomethine ylide through 1,3-dipolar cycloaddition reactions
Creators: name: S. Vidya
name: K. Priya
name: Jayasree, Devi Velayudhan
name: Deepthi, Ani
name: Prabath G. Biju
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Spiro(oxindole-3,2’-pyrrolidine) is a privileged scaffold displaying a wide spectrum of biological activities. A series of these molecules containing heterocyclic rings attached to the pyrrolidine unit has been synthesized utilizing the classical 1,3-dipolar cycloaddition reaction of azomethine ylide with heterocyclic ylidenes. The method portrays a two-step functionalization of thiophene/furan with spiropyrrolidine oxindoles in the second/third positions. Biological activity evaluation for antibacterial, cell toxicity, and anticancer potential were done. Compounds exhibited no antibacterial activity. However, they were found to be non-cytotoxic upto 100 µg/ml and to exhibit potent anticancer activity by activating pro-apoptotic genes p53 and caspase 7.
Oscillating about coplanarity in the 4 body problem
Creators: name: Montgomery, Richard
Publisher: name: arXiv
Year: 2018
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 70F10, 34C25, 70E55, 70G45, 70H20, 753D20

description: For the Newtonian 4-body problem in space we prove that any zero angular momentum bounded solution suffers infinitely many coplanar instants, that is, times at which all 4 bodies lie in the same plane. This result generalizes a known result for collinear instants ("syzygies") in the zero angular momentum planar 3-body problem, and extends to the $d+1$ body problem in $d$-space. The proof, for $d=3$, starts by identifying the center-of-mass zero configuration space with real $3 \times 3$ matrices, the coplanar configurations with matrices whose determinant is zero, and the mass metric with the Frobenius (standard Euclidean) norm. Let $S$ denote the signed distance from a matrix to the hypersurface of matrices with determinant zero. The proof hinges on establishing a harmonic oscillator type ODE for $S$ along solutions. Bounds on inter-body distances then yield an explicit lower bound $ω$ for the frequency of this oscillator, guaranteeing a degeneration within every time interval of length $π/ω$. The non-negativity of the curvature of oriented shape space (the quotient of configuration space by the rotation group) plays a crucial role in the proof.
description: 26 pages, 5 figures
Where There is a Doctor: An Ethnography of Pediatric Heart Surgery Missions in Honduras
Creators: Worthington, Nancy
Publisher: name: Columbia University
Year: 2015
Subjects: Heart--Surgery
Missions, Medical
Ethnology
Children--Surgery
Public health

description: Traveling teams of cardiovascular specialists visit poor countries to treat children born with life-threatening heart defects. Working within challenging settings, volunteers may need to build temporary operating theaters and neonatal intensive care units before beginning their work. They also try to extend their humanitarian reach beyond the confines of an in-country visit: they train locally-based personnel in surgical and critical care techniques considered routine in rich countries yet locally unavailable; they donate machines, hardware, and disposable materials to local hospitals; they even build permanent surgical centers. Pediatric heart surgery missions thus define a new context where medical technologies circulate globally. It is well-known that medical technologies have far-reaching effects, transforming societies while at the same time being transformed by them, but few scholars have explored these processes in medical humanitarian arenas.
      	This study investigates the moral logic, medical logistics, and unanticipated effects of short-term surgical missions. The setting is Honduras: a known hub of medical mission activity. The study begins with an examination of why Honduras attracts scores of medical missions, and why children with heart defects have emerged as central objects of humanitarian concern. I argue that humanitarian sentiments dovetail with other interests and desires on the part of surgical volunteers, such as adventure travel, learning, and the allure of practicing an alternative, low-tech version of biomedicine as a corrective to disappointments, frustrations, and lulls in their everyday professional lives. I then describe how this humanitarian ethos reconfigures biomedical practice. This is followed by a discussion of the implications of pediatric heart surgery missions for host countries, such as how they inadvertently re-inscribe social hierarchies and place strain on existing health services. Finally, I follow the lives of pediatric heart patients after their surgeries, show how their parents contest any stereotypical assumptions about humanitarian aid beneficiaries, and unpack the logic underpinning consent for especially high-risk procedures. My analysis emerges from 13 months of ethnographic field research primarily in Tegucigalpa, the nation’s capital, during which I participated in six pediatric heart surgery missions, and observed and interviewed volunteer clinicians, locally-based clinicians, and the parents of pediatric heart surgery patients.
Synthesis of Barleriaquinones-I & II
Creators: name: Satheesh Kumar Dende
name: Doddipalla, Raju
name: Rajashekar Reddy Nimmareddy
name: Thirupathi Rapolu
name: Raghu Babu Korupolu
name: Krishnakanth Reddy Leleti
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Computational Biology

description: Synthesis of two naturally occurring anthraquinones, Barleriaquinone-I (BQ-I) and Barleriaquinone-II (BQ-II) is achieved from commercially available naphthalene-1,5-diol. The anthraquinone core is constructed by utilizing simultaneous Heck and cross coupling reaction as the key step.
Effect of implementation of improved methods of the life cycle stages organisation to the online community management
Creators: name: Syerov, Yuriy
name: Trach, Olha
name: Fedushko, Solomia
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: This paper presents the current problem of investigation of the effect of implementation of improved methods of the life cycle stages organisation to online community management. The online community life cycle is the sum of the stages of organisation and development of online community. The current approaches of scientific researches of social processes within the WWW are analysed. The types of life cycles are distinguished and implemented in the online community management. The algorithm of life cycle stages of the online community is designed. The total quality of the life cycle stages execution and quality of the life cycle stages execution of Lviv Polytechnic online community from 2013 till 2016. Currently, the appropriate study and development of community management hardware and software provoke the most interest because online communities are a widespread and popular phenomenon, and the existing management software for them is imperfect and not complex.
description: 5 pages, 3 figures
Ptychopseustis suffusalis Agassiz 2022, sp. n.
Creators: name: Agassiz, David
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Crambidae
Ptychopseustis
Ptychopseustis suffusalis

description: Ptychopseustis suffusalis sp. n.
Imago (fig. 47): Wingspan 9–11 mm. Head and appendages pale brown, maxillary palpus half diameter of eye, labial palpus> diameter of eye. Thorax and tegulae pale brown. Forewing heavily suffused fuscous, a poorly defined irregular antemedian fascia, a second irregular fascia sharply angled to costa before ¾, dark spots along termen. HIndwing fuscous. Hind leg thickened with scales on femur.
Male genitalia (fig. 80): Uncus tapered to blunt apex, gnathos almost as long as uncus; valva broader near base, raised ventral process just before apex which is very weak; vinculum with a pair of specialised setae, about four in each side bent before apex. Aedeagus straight, cornutus a serrate bar about 1/5 length of aedeagus.
Female genitalia (fig. 108): Ductus widening before corpus bursae, sclerotisation at junction with ductus, corpus bursae with a sclerotised scobinate patch, a bulla on the side. (Ovipositor missing from specimen dissected).
Diagnosis: Distinguished from others in the genus by the heavily suffused ground colour of the forewing and characters of the genitalia.
Life history: Not known.
Derivation: from the colouration of the forewing.
Distribution: Madagascar.
Type material: Holotype ♂ [Madagascar] Diego Suarez 2.ii.1917 (G. Melou) NHMUK 010919119
Two paratypes: ♂ 23.iv.1917 same locality as holotype NHMUK010919121 BM Pyralidae Genitalia slide No. 23242, ♀ 3.ii.1917 same locality as holotype NHMUK01091920 BM Pyralidae Genitalia slide No. 23244.
Other material examined: [Madagascar] Diego Suarez (G. Melou) 1 specimen without abdomen 5.ii.1917, 1♂ 26–28.iii.1917, 2♀ 10–13.iv.1917, 1♀ iii–iv.1917.
description: Published as part of Agassiz, David, 2022, The tribe Cybalomiini (Lepidoptera: Pyraloidea, Crambidae, Glaphyrinae) of sub-Saharan Africa, pp. 101-156 in Zootaxa 5174 (2) on page 133, DOI: 10.11646/zootaxa.5174.2.1, http://zenodo.org/record/6986011
Hiding Quantum Data
Creators: name: DiVincenzo, David P.
name: Hayden, Patrick
name: Terhal, Barbara M.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recent work has shown how to use the laws of quantum mechanics to keep classical and quantum bits secret in a number of different circumstances. Among the examples are private quantum channels, quantum secret sharing and quantum data hiding. In this paper we show that a method for keeping two classical bits hidden in any such scenario can be used to construct a method for keeping one quantum bit hidden, and vice--versa. In the realm of quantum data hiding, this allows us to construct bipartite and multipartite hiding schemes for qubits from the previously known constructions for hiding bits. Our method also gives a simple proof that two bits of shared randomness are required to construct a private quantum channel hiding one qubit.
description: 13 pages + 2 figs, submitted to 'David Mermin Festschrift' in Foundations of Physics
Les défis de la compatibilité environnementale et des taxes: le cas du Mexique
Creators: name: Georgina, Carmona García Laura
Publisher: name: Zenodo
Year: 2021
Subjects: énvironnement
Mexique
Contribuables

description: Notre presentation vise á exponer une parte de l´enquête que nous aoves menée, sur un sujeto d´intérêt mundial á savoir, le développement durable ainsi que le manque de réglementatión au Mexique au niveau de la protection de lénvironnement et la réaction des contribuables á set égard.
On the constants in some inequalities for the Sobolev norms and pointwise product
Creators: name: Morosi, C.
name: Pizzocchero, L.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Functional Analysis (math.FA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We consider the Sobolev norms of the pointwise product of two functions, and estimate from above and below the constants appearing in two related inequalities.
description: to appear in the Journal of Inequalities and Applications
Whistling in the Wind: Examining the Effects of Sexual Orientation Relational Demography on Individual Perceptions of Workgroup Process and Withdrawal
Creators: Golom, Francis D.
Publisher: name: Columbia University
Year: 2013
Subjects: subject: Psychology
subject: FOS: Psychology
subject: Management
subject: Gender identity
subject: Sex role

description: This study examined the relationship between perceived workgroup sexual orientation dissimilarity and participant perceptions of group process and withdrawal. Based on the theory of relational demography within groups (Riordan, 2000) and recent research on moderators of the dissimilarity-outcome relationship (e.g., Stewart and Garcia-Prieto, 2008), the study argued that: (1) perceived sexual orientation dissimilarity would be associated with negative group process effects and increased withdrawal for all study participants, (2) that the relationship between perceived sexual orientation dissimilarity and outcomes would be stronger for heterosexual individuals than for those who identified as lesbian, gay or bisexual (LBG), and (3) that participants' level of sexual orientation identity development would moderate their responses to increased sexual orientation dissimilarity in their workgroups. Three hundred and ninety-eight graduate students at Columbia University were asked to respond to an online questionnaire designed to assess their perceptions of workgroup dissimilarity, communication, conflict and peer relations as well as their individual levels of withdrawal. Hypotheses were tested using hierarchical multiple regression analysis. Results indicated that perceived dissimilarity was positively related to increased relationship conflict, task conflict and withdrawal and negatively related to peer relations among all study participants. Additionally, the effects of perceived dissimilarity on task conflict and withdrawal were moderated by participant sexual orientation and participant sexual orientation identity development, consistent with study hypotheses. Slightly different patterns of findings emerged when the results were examined for LGB and heterosexual individuals separately. Though not hypothesized, values dissimilarity was found to mediate the relationship between perceived sexual orientation dissimilarity and several of the group process outcomes, particularly for heterosexual individuals. The contributions and implications of these findings for relational demography and sexual orientation workplace research are also discussed.
Quantum Fluctuations for Gravitational Impulsive Waves
Creators: name: Enginer, Y.
name: Hortacsu, M.
name: Ozdemir, N.
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Quantum fluctuations for a massless scalar field in the background metric of spherical impulsive gravitational waves through Minkowski and de Sitter spaces are investigated. It is shown that there exist finite fluctuations for de Sitter space.
description: Submitted to Int. J. Mod. Phys. A
Spin decoherence independent of antiferromagnetic order in IrMn
Creators: name: Khodadadi, Behrouz
name: Lim, Youngmin
name: Smith, David A.
name: Greening, Ryan W.
name: Zheng, Yuankai
name: Diao, Zhitao
name: Kaiser, Christian
name: Emori, Satoru
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the impact of pinned antiferromagnetic order on the decoherence of spin current in polycrystalline IrMn. In NiFe/Cu/IrMn/CoFe multilayers, we coherently pump an electronic spin current from NiFe into IrMn, whose antiferromagnetic order is globally pinned by static exchange-bias coupling with CoFe. We observe no anisotropic spin decoherence with respect to the orientation of the pinned antiferromagnetic order. We also observe no difference in spin decoherence for samples with and without pinned antiferromagnetic order. Moreover, although there is a pronounced resonance linewidth increase in NiFe that coincides with the switching of IrMn/CoFe, we show that this is not indicative of anisotropic spin decoherence in IrMn. Our results demonstrate that the decoherence of electron-mediated spin current is remarkably insensitive to the magnetization state of the antiferromagnetic IrMn spin sink.
Where do Political Will and Community Needs Meet? The case of the Aerial Cable Cars in Rio de Janeiro, Brazil
Creators: Krassner, Anne
Publisher: name: Columbia University
Year: 2014
Subjects: subject: City planning
subject: Transportation--Planning
subject: Sociology
subject: FOS: Sociology

description: In the last 10 years, aerial cable cars have been popularized as the leading remedy for the mobility hurdles faced by informal settlements in Latin America. The literature hails cable cars as an innovative and effective solution to increasing access to and from informal settlements in cities of the global South. Additionally, academics credit aerial cable-car systems around the world with helping change the perception of informal settlements and help integrate them, both physically and socially, into the formal city. However, the community of Complexo do Alemão, where the city of Rio de Janeiro inaugurated its first aerial cable-car system in 2011, is unsatisfied with the government’s choice to build a cable car in their community, and proposals for cable-car systems in other favelas around the city have been met with heavy protest. This thesis explores the disconnect between the government’s effort to increase mobility and accessibility by building the cable car, and the community’s negative response to this “innovative” technology. Through a community survey and interviews with community leaders and officials, this thesis unpacks the process of planning the cable cars in Complexo do Alemão, as the community experienced it and as it was framed by the state of Rio de Janeiro. The lack of transparency throughout the planning process and integration of the project with the most pressing needs of the community, as well as absence of accountability of the government to the residents of Complexo do Alemão, resulted in a missed opportunity to truly improve the life of the people living in the neighborhood. As the Brazilian government continues to invest heavily in large infrastructure projects such as the Teleférico, it is imperative that these projects be in touch with the needs in the communities which they affect so that government funds can be utilized and optimized to truly improve the quality of life in Brazilian cities.
Discrete Dubrovin Equations and Separation of Variables for Discrete Systems
Creators: name: Nijhoff, F. W.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: A universal system of difference equations associated with a hyperelliptic curve is derived constituting the discrete analogue of the Dubrovin equations arising in the theory of finite-gap integration. The parametrisation of the solutions in terms of Abelian functions of Kleinian type (i.e. the higher-genus analogues of the Weierstrass elliptic functions) is discussed as well as the connections with the method of separation of variables.
description: Talk presented at the Intl. Conf. on ``Integrability and Chaos in Discrete Systems'', July 2-6, 1997, to appear in: Chaos, Solitons and Fractals, ed. F. Lambert, (Pergamon Press)
Durable Solutions for the Beautification of the Abdul Ladha Building
Creators: name: Ali, Hadir
name: Rosales, Guilherme
name: Wu, Sean
Publisher: name: The University of British Columbia
Year: 2020

description: In January of 2019, students in GPP 504 Policy Analysis and Evaluation were commissioned with different faculties at UBC in collaboration with SEEDs with different assigned policy problems. Our group, consisting of Hadir Ali, Sean Wu, and Guilherme Rosales were tasked with the “Beautification” of the Abdul Ladha Science Student Centre. We were presented with multiple perceived issues within the building but ultimately we were told that the building was built approximately ten years ago, and as a result of lack of upkeep it is currently in bad aesthetic condition. In order to address and resolve this issue our group has put together a package of options to make Ladha more inviting and aesthetically pleasing. In this endeavour we visited the building multiple times, reviewed the current policies of the Science Undergraduate Society (SUS), collaborated with different faculties and workshopped ideas to enhance Ladha aesthetically. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Plasmonic performance of Au$_\mathbf{x}$Ag$_\mathbf{y}$Cu$_\mathbf{1-x-y}$ alloys from many-body perturbation theory
Creators: name: Orhan, Okan K.
name: O'Regan, David D.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a detailed appraisal of the optical and plasmonic properties of ordered alloys of the form Au$_{x}$Ag$_{y}$Cu$_{1-x-y}$, as predicted by means of first-principles many-body perturbation theory augmented by a semi-empirical Drude-Lorentz model. In benchmark simulations on elemental Au, Ag, and Cu, we find that the random-phase approximation (RPA) fails to accurately describe inter-band transitions when it is built upon semi-local approximate Kohn-Sham density-functional theory (KS-DFT) band-structures. We show that non-local electronic exchange-correlation interactions sufficient to correct this, particularly for the fully-filled, relatively narrow $d$-bands that which contribute strongly throughout the low-energy spectral range ($0-6$ eV), may be modelled very expediently using band-stretching operators that imitate the effect of a perturbative G$_0$W$_0$ self-energy correction incorporating quasiparticle mass renormalization. We thereby establish a convenient work-flow for carrying out approximated G$_0$W$_0$+RPA spectroscopic calculations on alloys. We develop a pragmatic procedure for calculating the Drude plasmon frequency from first principles, including self-energy effects, as well as a semi-empirical scheme for interpolating the plasmon inverse lifetimes between stoichiometries. A range of optical and plasmonic figures of merit are discussed at three representative solid-state laser wavelengths.
description: 16 pages + 4 pages Supporting Information, 48 figures
On the differentiability conditions at spacelike infinity
Creators: name: Herberthson, Magnus
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider space-times which are asymptotically flat at spacelike infinity, i^0. It is well known that, in general, one cannot have a smooth differentiable structure at i^0, but have to use direction dependent structures. Instead of the oftenly used C^{>1}-differentiabel structure, we suggest a weaker differential structure, a C^{1^+} structure. The reason for this is that we have not seen any completions of the Schwarzschild space-time which is C^{>1} in both spacelike and null directions at {i^0}. In a C^{1^+} structure all directions can be treated equal, at the expense of logarithmic singularities at {i^0}. We show that, in general, the relevant part of the curvature tensor, the Weyl part, is free from these singularities, and that the (rescaled) Weyl tensor has a certain symmetry.
description: 24 pages, Latex
title: Towards knowledge based engineering for multi-material design
Creators: name: Kleemann, Sebastian
name: Türck, Eiko
name: Vietor, Thomas
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2016
Subjects: subject: lightweight design, knowledge based engineering, knowledge structuring, design guidelines
subject: 620

description: The "Manual Multi-Material-Design" presented in this paper is a Knowledge Management System (KMS) for the automotive lightweight design, providing design rules. For developing automotive components in multi-material-design extensive expertise for various topics is compulsory. Besides, design expertise regarding steel, knowledge about fibre reinforced plastics (FRP), joining and production technologies are crucial. To accelerate the development of components in multi-material-design and to enhance the engineers expertise, a Knowledge Management System must be developed.
Which Approaches Do Students Prefer? Analyzing the Mathematical Problem Solving Behavior of Mathematically Gifted Students
Creators: Tjoe, Hartono Hardi
Publisher: name: Columbia University
Year: 2011
Subjects: Mathematics--Study and teaching
Mathematics--Study and teaching (Secondary)
Problem solving--Study and teaching (Secondary)

description: This study analyzed the mathematical problem solving behavior of mathematically gifted students. It focused on a specific fourth step of Polya's (1945) problem solving process, namely, looking back to find alternative approaches to solve the same problem. Specifically, this study explored problem solving using many different approaches. It examined the relationships between students' past mathematical experiences and the number of approaches and the kind of mathematics topics they used to solve three non-standard mathematics problems. It also analyzed the aesthetic of students' approaches from the perspective of expert mathematicians and the aesthetic of these experts' preferred approaches from the perspective of the students. Fifty-four students from a specialized high school were selected to participate in this study that began with the analysis of their past mathematical experiences by means of a preliminary survey. Nine of the 54 students took a test requiring them to solve three non-standard mathematics problems using many different approaches. A panel of three research mathematicians was consulted to evaluate the mathematical aesthetic of those approaches. Then, these nine students were interviewed. Also, all 54 students took a second survey to support inferences made while observing the problem solving behavior of the nine students. This study showed that students generally were not familiar with the practice of looking back. Indeed, students generally chose to supply only one workable, yet mechanistic approach as long as they obtained a correct answer to the problem. The findings of this study suggested that, to some extent, students' past mathematical experiences were connected with the number of approaches they used when solving non-standard mathematics problems. In particular, the findings revealed that students' most recent exposure of their then-AP Calculus course played an important role in their decisions on selecting approaches for solution. In addition, the findings showed that students' problem solving approaches were considered to be the least "beautiful" by the panel of experts and were often associated with standard approaches taught by secondary school mathematics teachers. The findings confirmed the results of previous studies that there is no direct connection between the experts' and students' views of "beauty" in mathematics.
Bose-Einstein condensate in Bloch bands with off-diagonal periodic potential
Creators: name: Huang, Yue-Xin
name: Zhuang, Wei Feng
name: Zhou, Xiang-Fa
name: Pu, Han
name: Guo, Guang-Can
name: Gong, Ming
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report the Bose-Einstein condensate (BEC) in the Bloch bands with off-diagonal periodic potential (ODPP), which simultaneously plays the role of spin-orbit coupling (SOC) and Zeeman field. This model can be realized using two independent Raman couplings in the same three level system, in which the time-reversal symmetry ensures the energy degeneracy between the two states with opposite momenta. We find that these two Raman couplings can be used to tune the spin polarization in momentum space, thus greatly modifies the effective scatterings over the Bloch bands. We observe a transition from the Bloch plane wave phase with condensate at one wave vector to the Bloch stripe phase with condensates at the two Bloch states with opposite wave vectors. These two phases will exhibit totally different spin textures and density modulations in real space, which are totally different from that in free space. In momentum space multiple peaks differ by some reciprocal lattice vectors can be observed, reflecting the periodic structure of the ODPP. A three-band effective model is proposed to understand these observations. This system can provide a new platform in investigating of various physics, such as collective excitations, polaron and topological superlfuids, over the Bloch bands.
description: 6 pages, 5 figures
On resumming periodic orbits in the spectra of integrable systems
Creators: name: de Almeida, Alfredo M. Ozorio
name: Lewenkopf, Caio H.
name: Tomsovic, Steven
Publisher: name: arXiv
Year: 2002
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Spectral determinants have proven to be valuable tools for resumming the periodic orbits in the Gutzwiller trace formula of chaotic systems. We investigate these tools in the context of integrable systems to which these techniques have not been previously applied. Our specific model is a stroboscopic map of an integrable Hamiltonian system with quadratic action dependence, for which each stage of the semiclassical approximation can be controlled. It is found that large errors occur in the semiclassical traces due to edge corrections which may be neglected if the eigenvalues are obtained by Fourier transformation over the long time dynamics. However, these errors cause serious harm to the spectral approximations of an integrable system obtained via the spectral determinants. The symmetry property of the spectral determinant does not generally alleviate the error, since it sometimes sheds a pair of eigenvalues from the unit circle. By taking into account the leading order asymptotics of the edge corrections, the spectral determinant method makes a significant recovery.
description: 12 pages, 5 figures
Zipf's, Heaps' and Taylor's laws are determined by the expansion into the adjacent possible
Creators: name: Tria, Francesca
name: Loreto, Vittorio
name: Servedio, Vito D. P.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Zipf's, Heaps' and Taylor's laws are ubiquitous in many different systems where innovation processes are at play. Together, they represent a compelling set of stylized facts regarding the overall statistics, the innovation rate and the scaling of fluctuations for systems as diverse as written texts and cities, ecological systems and stock markets. Many modeling schemes have been proposed in literature to explain those laws, but only recently a modeling framework has been introduced that accounts for the emergence of those laws without deducing the emergence of one of the laws from the others or without ad hoc assumptions. This modeling framework is based on the concept of adjacent possible space and its key feature of being dynamically restructured while its boundaries get explored, i.e., conditional to the occurrence of novel events. Here, we illustrate this approach and show how this simple modelling framework, instantiated through a modified Polya's urn model, is able reproduce Zipf's, Heaps' and Taylor's laws within a unique self-consistent scheme. In addition the same modelling scheme embraces other less common evolutionary laws (Hoppe's model and Dirichlet processes) as particular cases.
description: This article belongs to the Special Issue Economic Fitness and Complexity
LABORATORY DIAGNOSIS OF THE CAUSATIVE DERMATOPHYTES OF TINEA CAPITIS.pdf
Creators: name: Khalid, Mohamed
Publisher: name: figshare
Year: 2019
Subjects: subject: 110304 Dermatology
subject: FOS: Clinical medicine
subject: 110899 Medical Microbiology not elsewhere classified
subject: FOS: Health sciences
subject: 110303 Clinical Microbiology

description: LABORATORY DIAGNOSIS OF THE CAUSATIVE DERMATOPHYTES OF TINEA CAPITISDOI : 10.20959/wjpr20196-14850
Thyridiphora Warren 1888
Creators: name: Agassiz, David
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Crambidae
Thyridiphora

description: THYRIDIPHORA Warren, 1888
 THYRIDIPHORA Warren, 1888 Proc. zool. Soc. Lond. 1888: 310
 Type species Thyridiphora fenestrata Warren, 1888.
 Micra furia Swinhoe, 1884 P.Z.S. 519, Pl 47, fig. 13
 Botys cineracealis Joannis, 1888. Ann. Soc. ent. Fr. 8: 273 pl. 6 fig. 3
 Thyridiphora fenestrata Warren, 1888: 311
 Cybolomia fenestrata Rothschild, 1921: 229
 Thyridiphora gilva Turner, 1926: 130
 Dysodea calidella Le Grand, 1965: 88.
 Thyridiphora grisea Amsel, 1970: 5.
description: Published as part of Agassiz, David, 2022, The tribe Cybalomiini (Lepidoptera: Pyraloidea, Crambidae, Glaphyrinae) of sub-Saharan Africa, pp. 101-156 in Zootaxa 5174 (2) on page 154, DOI: 10.11646/zootaxa.5174.2.1, http://zenodo.org/record/6986011
On Riemann surfaces of genus $g$ with $4g-4$ automorphisms
Creators: name: Reyes-Carocca, Sebastián
Publisher: name: arXiv
Year: 2018
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14H30, 30F35, 14H37, 14H40

description: In this article we study compact Riemann surfaces with a non-large group of automorphisms of maximal order; namely, compact Riemann surfaces of genus $g$ with a group of automorphisms of order $4g-4.$ Under the assumption that $g-1$ is prime, we provide a complete classification of them and determine isogeny decompositions of the corresponding Jacobian varieties.
description: 15 pages
White-collar Gender Discrimination in China: How legal system fails to protect women’s employment rights?
Creators: Zhang, Yiruo
Publisher: name: Columbia University
Year: 2018
Subjects: Human rights
Sex discrimination in employment
Sex discrimination against women

description: Inherited from the traditional Confucians value, men have played a dominant role in China, and women have suffered gender discrimination in multiple surfaces including health, education, expectation of social roles, and job markets. In this paper, I focus on women’s employment rights and gender discrimination at workplace in China. Despite joining international conventions and having general domestic laws against discrimination, women in China are treated unequally and less favored in the entire occupational lifecycle, including job selection, recruitment, allocation, training, promotion and benefits, firing, retirement, and pension. By examining policies and practices against white-collar women in regard to recruitment process, employment benefits, and sexual harassment, areas where the most common types of discrimination occur, I intend to identify three factors contributed to the inefficiency of the Chinese legal system in protecting female employees against gender discrimination: 1) Gendered stereotypes and social norms, 2) Inadequate legal and political regulation, and 3) Sketchy employer practices.
White Flight: Uncovering the History of White Refugees from the History of the Freedmen’s Bureau: 1861-1868
Creators: Foley, Mary Bridget
Publisher: name: Columbia University
Year: 2016
Subjects: Reconstruction (United States : 1865-1877)
American Civil War (1861-1865)
Refugees
History

description: The role of Freedmen’s Bureau has been central to historian’s interpretations of the politics of Reconstruction over the course of the twentieth century. However that literature has primarily focussed on the Bureau’s assistance to the freedmen and placed little interpretive significance to the very substantial aid and services the Bureau provided to white refugees. The politics of the Freedmen’s bureau makes little sense without this chapter. Loyal and even disloyal Southerners received millions of dollars worth of direct assistance in the form of rations, seed, farm implements and transportation from the federal government and affiliated northern charities between 1861 and 1868. This paper seeks to examine the role of white refugees in the formation and extension of proto-welfare programs in the late Civil War and immediate post-war period under the Bureau of Refugees, Freedmen and Abandoned Lands (Freedmen’s Bureau).
Larnaca Shen & Yin 2022
Creators: name: Shen, Si-Zhong
name: Yin, Zi-Xu
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Gryllacrididae
Larnaca

description: Key to known species of Larnaca from China
1 Tegmina micropterous................................................................................. 2
- Tegmina mesopterous.................................................................................. 3
 2 Body general blackish brown; posterior margin of male subgenital plate with a V-shaped notch................................................................................ Larnaca (Larnaca) emarginata Bian, Guo & Shi, 2015
 - Body yellowish brown; posterior margin of male subgenital plate almost straight................................................................................................. Larnaca (Larnaca) infolda Du, Bian & Shi, 2017
 3 Veins black and cells transparent on tegmina, external margin of hind femora with a long furrow....................................................................................... Larnaca (Larnaca) walle Yin & Meng, 2021
 - Tegmina broadly orange, external margin of hind femora smooth............... Larnaca (Larnaca) lieyongzhou sp. nov.
description: Published as part of Shen, Si-Zhong & Yin, Zi-Xu, 2022, A new species of the genus Larnaca from Guangxi, China (Orthoptera: Gryllacrididae: Gryllacridinae), pp. 181-187 in Zootaxa 5174 (2) on page 182, DOI: 10.11646/zootaxa.5174.2.4, http://zenodo.org/record/6986106
Symmetric Linear Backlund Transformation for Discrete BKP and DKP equation
Creators: name: Shinzawa, Nobuhiko
Publisher: name: arXiv
Year: 1999
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: Proper lattices for the discrete BKP and the discrete DKP equaitons are determined. Linear Bäcklund transformation equations for the discrete BKP and the DKP equations are constructed, which possesses the lattice symmetries and generate auto-Bäcklund transformations
description: 18 pages,3 figures
Long range antiferromagnetic order in a rocksalt high entropy oxide
Creators: name: Zhang, Junjie
name: Yan, Jiaqiang
name: Calder, S.
name: Zheng, Qiang
name: McGuire, Michael A.
name: Abernathy, D. L.
name: Ren, Yang
name: Lapidus, Saul H.
name: Page, Katharine
name: Zheng, Hong
name: Freeland, J. W.
name: Budai, John D.
name: Hermann, Raphael P.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report for the first time the magnetic structure of the high entropy oxide $(Mg_{0.2}Co_{0.2}Ni_{0.2}Cu_{0.2}Zn_{0.2})O$ using neutron powder diffraction. This material exhibits a sluggish magnetic transition but possesses a long-range ordered antiferromagnetic ground state, as revealed by DC and AC magnetic susceptibility, elastic and inelastic neutron scattering measurements. The magnetic propagation wavevector is k=(1/2, 1/2, 1/2) based on the cubic structure Fm-3m, and the magnetic structure consists of ferromagnetic sheets in the (111) planes with spins antiparallel between two neighboring planes. Inelastic neutron scattering reveals strong magnetic excitations at 100 K that survive up to room temperature. This work demonstrates that entropy-stabilized oxides represent a unique platform to study long range magnetic order with extreme chemical disorder.
description: 13 pages, 4 figures, supplemental material is upon request
title: Endangered Species Act Section 7(a)(2) Biological Opinion, Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Response, and Fish and Wildlife Coordination Act Recommendations for the proposed Delta Research Station project
Creators: name: United States. National Marine Fisheries Service. West Coast Region
Publisher: name: United States. National Marine Fisheries Service. West Coast Region
Year: 2017

description: ESA Section 7 Consultation ; WCRO-2017-01139
Causality properties of topologically nontrivial space-time models
Creators: name: Konstantinov, M. Yu.
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Some problems of the space-time causal structure are discussed using models with traversable wormholes. For this purpose the conditions of traversable wormhole matching with the exterior space-time are considered in detail and a mixed boundary problem for the Einstein equations is formulated and analyzed. The influence of these matching conditions on the space-time properties and causal structure is analyzed. These conditions have a non-dynamical nature and cannot be determined by any physical process. So, the causality violation cannot be a result of dynamical evolution of some initial hypersurface. It is also shown that the same conditions which determine the wormhole joining with the outer space provide the self-consistency of solutions and the absence of paradoxes in the case of causality violation.
description: 7 pages, LaTeX; Talk presented at the International School-Seminar "Problems of Theoretical Cosmology", Ulyanovsk, September 1--7, 1997