cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Computational modeling of active deformable membranes embedded in 3D flows
Creators: name: Bächer, Christian
name: Gekle, Stephan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Active gel theory has recently been very successful in describing biologically active materials such as actin filaments or moving bacteria in temporally fixed and simple geometries such as cubes or spheres. Here we develop a computational algorithm to compute the dynamic evolution of an arbitrarily shaped, deformable thin membrane of active material embedded in a 3D flowing liquid. For this, our algorithm combines active gel theory with the classical theory of thin elastic shells. To compute the actual forces resulting from active stresses, we apply a parabolic fitting procedure to the triangulated membrane surface. Active forces are then dynamically coupled via an Immersed-Boundary method to the surrounding fluid whose dynamics can be solved by any standard, e.g. Lattice-Boltzmann, flow solver. We validate our algorithm using the Green's functions of [Berthoumieux et al. New J. Phys. 16, 065005 (2014)] for an active cylindrical membrane subjected (i) to a locally increased active stress and (ii) to a homogeneous active stress. For the latter scenario, we predict in addition a so far unobserved non-axisymmetric instability. We highlight the versatility of our method by analyzing the flow field inside an actively deforming cell embedded in external shear flow. Further applications may be cytoplasmic streaming or active membranes in blood flows.
description: 30 pages, 11 figures
Perseveration and health: An experimental examination of worry and relaxation on autonomic, endocrine, and immunological processes
Creators: Renna, Megan Elizabeth
Publisher: name: Columbia University
Year: 2019
Subjects: Clinical psychology
Worry
Emotions--Physiological aspects
Psychoneuroimmunology
Hydrocortisone

description: The field of psychoneuroimmunology seeks to examine the impact of stress and other psychological processes on physical health. While some theories suggest that processes such as worry may have a significant impact on prolonging the physiological stress response and subsequently increasing risk for long-term health issues, to date, this research has not yet thoroughly examined the impact of worry on physical health processes. The current study sought to combine theories from clinical and health psychology to investigate the impact of experimentally-induced worry and relaxation on cortisol, heart rate variability (HRV), and inflammation. Participants (N = 85) were community members from the New York City area. They completed worry and relaxation inductions within the laboratory while HRV was collected continuously. Three blood samples were taken throughout the study to test for inflammation and cortisol. Results indicated changes in HRV, IL-6, and IFN-γ throughout the study conditions that were not moderated by levels of trait worry. HRV, cortisol, and inflammation did not covary throughout the different experimental conditions and changes in cortisol and/or HRV did not temporally precede changes in inflammation throughout the study. Overall, the findings from the current study offer insight into the contrasting impact that worry and relaxation have on physiological biomarkers and highlights important directions for future research in the field of psychoneuroimmunology.
Abstraction and Intermediation: The Implications of Behavioral Decision Making for Three Applications in Finance
Creators: name: Rode, David
Publisher: name: Carnegie Mellon University
Year: 2019
Subjects: subject: 220302 Decision Theory
subject: FOS: Philosophy, ethics and religion

description: Modern financial theory and practice make extensive use of the concepts of abstraction and intermediation. Securities are designed, valued, and allocated within portfolios based on characteristics that contain little of the richness of the actual assets underlying their claims. Corporate financial decisions and policy analyses evaluate choices based on comparing abstract metrics that ignore or minimize the myriad attributes belonging to such choices. In many cases, these evaluations and choices are made by intermediaries (whether human experts or heuristic rules) that either offer specialized information or serve as a proxy for competitive markets. While economic theory has addressed issues in abstraction and intermediation that arise from incentive problems and information asymmetries directly, most approaches have maintained the traditional assumption of rational agents free of cognitive constraints and biases. This dissertation illustrates, through three applications, that abstraction and intermediation are at significant risk of suboptimal operation when faced with certain limitations prevalent in the behavioral decision-making literature.

 The three diverse applications include the design of financial securities, the ratemaking practices of utility regulators, and the use of metrics and heuristics by intermediaries in corporate finance and policy analysis. Well-established areas in the behavioral decisionmaking literature, such as risk perception, communication about uncertainty, and heuristic choice and expert judgment are shown to challenge the application of these core principles of economics in practice. This dissertation develops a methodology for evaluation and demonstrates the practical consequences of behavioral decision-making in each of the three applications and examines possible responses and interventions to mitigate their effect.
Group Invariant Solutions without Transversality and the Principle of Symmetric Criticality
Creators: name: Anderson, I.
name: Fels, M.
name: Torre, C.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We extend Lie's classical method for finding group invariant solutions to the case of non-transverse group actions. For this extension of Lie's method we identify a local obstruction to the principle of symmetric criticality. Two examples of non-transverse symmetry reductions for the potential form of Maxwell's equations are then examined.
description: 16 pages, AMSTeX, bugs fixed in example 3.2
New CMB spectral distortion constraints on decaying dark matter with full evolution of electromagnetic cascades before recombination
Creators: name: Acharya, Sandeep Kumar
name: Khatri, Rishi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Current constraints on energy injection in the form of energetic particles before the epoch of recombination using CMB spectral distortions assume that all energy goes into $y$ and $μ$-type distortions. We revisit these constraints with exact calculations of the spectral distortions by evolving the electromagnetic cascades. The actual spectral distortion differs in shape and amplitude from the $y$-type distortion and depends on the energy and nature of injected particles. The constraints on the energy injection processes such as dark matter decay can be relaxed by as much as a factor of 5.
description: Revised version, comments welcome
Life of coal mine planning : engaging in land use planning at Luscar and Gregg River mines
Creators: name: Karmacharya, S.
name: Symbaluk, M.
name: Brand, D.
name: Schwartz, S.
Publisher: name: The University of British Columbia
Year: 2012

description: Luscar Mine and Gregg River Mine lease areas are located along the front range of the Rocky Mountains, adjacent to Jasper National Park, Canada. The active mining area has been reclaimed resulting in the reestablishment of the area as part of the home range of wildlife species, including bighorn sheep, elk and provincially threatened species such as grizzly bear and Athabasca rainbow trout. In addition to these prominent species, significant wildlife diversity has emerged and continues to evolve. The Luscar and Gregg River Mines Land Management Plan Working Group was formed to develop a land management plan and consists of membership from Alberta Sustainable Resource Development (ASRD), Teck Resources Ltd., Coal Valley Resources Inc., Alberta Environment and Yellowhead County. The methodology employed for land management planning involved communities, interest groups and the public. The process engaged stakeholders representing a variety of community interests. The process established a vision for the area that would allow for management of the reclaimed habitat and re-colonising populations of wildlife along with reasonable and appropriate human use, thus providing opportunities for interpretation, education, recreation and ecotourism. The process provided an opportunity for collaboration among provincial and local government, industry, stakeholders and the public to explore a more strategic and integrated land management approach to end-land-use planning.
Creating localized plasma wave by ionization of doped semiconductors
Creators: name: Qu, Kenan
name: Fisch, Nathaniel J.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Localized plasma waves can be generated by suddenly ionizing extrinsic semiconductors with spatially periodic dopant densities. The built-in electrostatic potentials at the metallurgical junctions, combined with electron density ripples, offer the exact initial condition for exciting long-lasting plasma waves upon ionization. This method can create plasma waves with a frequency between a few terahertz to sub-petahertz without substantial damping. The lingering plasma waves can seed backward Raman amplification in a wide range of resonance frequencies up to the extreme ultraviolet regime. Chirped wavevectors and curved wavefronts allow focusing the amplified beam in both longitudinal and transverse dimensions. The main limitation to this method appears to be obtaining sufficiently low plasma density from solid-state materials to avoid collisional damping.
Low temperature specific heat of the heavy fermion superconductor PrOs$_4$Sb$_{12}$
Creators: name: Vollmer, R.
name: Faißt, A.
name: Pfleiderer, C.
name: Löhneysen, H. v.
name: Bauer, E. D.
name: Ho, P. -C.
name: Maple, M. B.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report the magnetic field dependence of the low temperature specific heat of single crystals of the first Pr-based heavy fermion superconductor PrOs$_4$Sb$_{12}$. The low temperature specific heat and the magnetic phase diagram inferred from specific heat, resistivity and magnetisation provide compelling evidence of a doublet ground state and hence superconductivity mediated by quadrupolar fluctuations. This establishes PrOs$_4$Sb$_{12}$ as a very strong contender of superconductive pairing that is neither electron-phonon nor magnetically mediated.
description: 4 pages, 4 figures
Jet milling industrialization of sticky active pharmaceutical ingredient using quality-by-design approach
Creators: name: Nakach, Mostafa
name: Jean-René Authelin
name: Corsini, Carlo
name: Gianola, Giovanni
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Space Science
subject: Biotechnology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Jet milling is frequently used in pharmaceutical industry to achieve different objectives. It can be used as enabling technology to overcome poor water solubility linked to hydrophobic active of pharmaceutical ingredient (API) by reducing the particle size and therefore increasing the dissolution rate. Alternatively, jet milling can be used either to enhance blending efficiency of API with excipient in case of formulation at low dosage strength or to achieve the required particle size for inhalation therapy. In this study, development of commercial manufacturing process of sticky API and its industrialization are described. The methodology used is based on quality-by-design approach to deliver safe, effective and robust manufacturing process. The study showed that the specific energy is a key factor that drives particle size during jet milling and the scale-up from lab to industrial scale. After understanding the process, a design space was built where different zones such as operating point, operating space (where the product is compliant to specification despite variability of process parameters), and the knowledge space were outlined. Finally, an industrial installation was proposed to deliver product with high productivity yield, compliant with safety regulation, and cleanable in place.
Angraecum sacciferum Lindl.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Angraecum
Angraecum sacciferum

description: Angraecum sacciferum Lindl.  —
Habit: Herb.
Habitat: LMWF, LMDF; up to 2 700 m. Distribution: II.
Voucher: N/A.
Reference: Cribb (1989b), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 25, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Bonatea volkensiana Rolfe
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Bonatea
Bonatea volkensiana

description: Bonatea volkensiana (Kraenzl.) Rolfe  —
Habit: Herb.
Habitat: LMDF; up to 2 400 m. Distribution: IIIa.
 Voucher: Naro Moru River Lodge, 18 Mar. 1978, Gilbert s.n. (EA).
Reference: Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 25, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
The COMBS survey I: Chemical Origins of Metal-Poor Stars in the Galactic Bulge
Creators: name: Lucey, Madeline
name: Hawkins, Keith
name: Ness, Melissa
name: Asplund, Martin
name: Bensby, Thomas
name: Casagrande, Luca
name: Feltzing, Sofia
name: Freeman, Kenneth C.
name: Kobayashi, Chiaki
name: Marino, Anna F.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Chemistry and kinematic studies can determine the origins of stellar population across the Milky Way. The metallicity distribution function of the bulge indicates that it comprises multiple populations, the more metal-poor end of which is particularly poorly understood. It is currently unknown if metal-poor bulge stars ([Fe/H] $
description: 19 pages, 5 tables, accepted to MNRAS
Super Chern Simons Theory and Flat Super Connections on a Torus
Creators: name: Mikovic, A.
name: Picken, R.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the moduli space of a super Chern-Simons theory on a manifold with the topology ${\bf R}\times §$, where $§$ is a compact surface. The moduli space is that of flat super connections modulo gauge transformations on $§$, and we study in detail the case when $§$ is atorus and the supergroup is $OSp(m|2n)$. The bosonic moduli space is determined by the flat connections for the maximal bosonic subgroup $O(m)\times Sp(2n)$, while the fermionic moduli appear only for special parts of the bosonic moduli space, which are determined by a vanishing determinant of a matrix associated to the bosonic part of the holonomy. If the CS supergroup is the exponential of a super Lie algebra, the fermionic moduli appear only for the bosonic holonomies whose generators have zero determinant in the fermion-fermion block of the super-adjoint representation. A natural symplectic structure on the moduli space is induced by the super Chern-Simons theory and it is determined by the Poisson bracket algebra of the holonomies. We show that the symplectic structure of homogenous connections is useful for understanding the properties of the moduli space and the holonomy algebra, and we illustrate this on the example of the $OSp(1|2)$ supergroup.
description: 15 pages, LaTex, typos corrected
Calanthe sylvatica Lindl.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Calanthe
Calanthe sylvatica

description: Calanthe sylvatica (Thouars) Lindl.  —
Habit: Herb.
Habitat: LMWF; up to 3 000 m. Distribution: II.
 Voucher: Kaburia Track, Alt. 2 148 m, 10 Aug. 2015, SAJIT 003927 (HIB).
Reference: Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 25, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
SUMCASTEC_190915_NA_BathWS_Workshop poster_.pdf_Limoges_T. Provent_Public_NA
Creators: name: T. Provent
name: Manczak, Rémi
name: Saada, Sofiane
name: Dalmay, Claire
name: Bessette, Barbara
name: Begaud, Gaëlle
name: Battu, Serge
name: Blondy, Pierre
name: Jauberteau, Marie Odile
name: Lalloué, Fabrice
name: Pothier, Arnaud
Publisher: name: Zenodo
Year: 2019

description: Poster presentation entitled "Microsystem and Lab-On-Chip technologies might promote future generation of new tools for biological analysis: Example of new type of cell sorting microsystem taking advantage of High Frequency Dielectrophoresis specificities of cancerous cells" for the workshop focusing on "Biomedical applications of electromagnetic energy" that was held in Bath on July 17 2019. The poster was presented by Thomas Provent.
description: This record contains two files: the workshop poster presentation and the corresponding abstract.
Dynamical Topology Change, Compactification and Waves in String Cosmology
Creators: name: Kiritsis, E.
name: Kounnas, C.
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Exact string solutions are presented, where moduli fields are varying with time. They provide examples where a dynamical change of the topology of space is occurring. Some other solutions give cosmological examples where some dimensions are compactified dynamically or simulate pre-big bang type scenarios. Some lessons are drawn concerning the region of validity of effective theories and how they can be glued together, using stringy information in the region where the geometry and topology are not well defined from the low energy point of view. Other time dependent solutions are presented where a hierarchy of scales is absent. Such solutions have dynamics which is qualitatively different and resemble plane gravitational waves. (Talk given at the Trieste Spring School and Workshop, 1994.)
description: 29pp. LateX, no figures.
Feasible model for photo-induced interband pairing
Creators: name: Porta, S.
name: Privitera, L.
name: Ziani, N. Traverso
name: Sassetti, M.
name: Cavaliere, F.
name: Trauzettel, B.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Recently, it has been proposed that a mechanism for the appearance of non-equilibrium superconductivity in a resonantly driven semiconductor with repulsive interband interactions exists.~\cite{Goldstein_PRB15} The underlying microscopic model relies on the appearance of a specific fermionic dissipation mechanism and the careful simultaneous tailoring of the electronic dispersion relation and electron-electron interactions. We, instead, show that the phenomenon is rather general and does not need a special fine tuning of parameters. By considering a pair of bands with locally the same sign of concavity, we demonstrate that interband pairing arises under the natural assumption of the presence of phononic baths and radiative recombination. In light of these findings, we demonstrate how the emergence of superconductivity can be understood in terms of standard equilibrium interband BCS theory.
description: 11 pages, 7 figures
The Behavioral Economics of Undersaving: Evidence from Field Experiments on Employee 401(k) Enrollment and Savings Decisions
Creators: name: Conell-Price, Lynn
Publisher: name: Carnegie Mellon University
Year: 2019
Subjects: subject: 220302 Decision Theory
subject: FOS: Philosophy, ethics and religion

description: The majority of Americans are not saving enough to maintain their standard of living after retirement. This lack of personal savings not only poses a policy problem, but also a challenge for traditional economic models of saving, which presume that people smooth consumption over their lifetimes. Previous economic research has proposed several theoretical mechanisms that could explain low saving, such as deficits in information and present-biased preferences. Yet despite considerable empirical research, we have little causal evidence on which mechanisms drive undersaving, particularly in the context of developed economies. This dissertation investigates causes and potential remedies for inadequate saving in 401(k)s—the most common type of retirement savings accounts in the US—through a series of field experiments implemented at financial services firms. In the first paper we test proposed mechanisms affecting savings and present some of the first direct experimental evidence implicating present bias in low 401(k) contributions. We show that this behavior and stated beliefs are not accommodated by the most commonly used formal model of present bias without extreme preference parameters. In the second paper, we ask whether design features of online 401(k) enrollment interfaces can encourage higher savings, without changing the underlying economic structure. We treat these presentational aspects as the “psychological design,” which standard economic theory deems irrelevant to choice. However, we demonstrate that psychological design can impact enrollment decisions through a series of field studies with a large 401(k) provider in which we experimentally vary the enrollment interface used by several hundred plans. Our enhanced design interface leads to a substantial increase in average contributions and also appears to amplify employee sensitivity to match-generosity, pointing to a complementarity between the use of design and economic structure to encourage savings. Using lab studies, we find little evidence to support the possibility that the observed effects of design occur through inferential channels. Collectively, the findings in this dissertation provide insight into non-standard models that may better explain how individuals make consequential financial decisions. They also provide scalable strategies to encourage savings.
Long-distance and large-time asymptotic behaviour of dynamic correlation functions in the massless regime of the XXZ spin-1/2 chain
Creators: name: Kozlowski, Karol K.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: Starting from the massless form factor expansion for the two-point dynamical correlation functions obtained recently, I extract the long-distance and large-time asymptotics of these correlators. The analysis yields the critical exponents and associated amplitudes characterising the asymptotics. The results are obtained on the basis of exact and first principle based considerations: they \textit{do not rely, at any stage}, on some hypothetical correspondence with a field theory or the use of any other phenomenological approach. Being based on form factor expansion, the method allows one to clearly identify which contributions to the asymptotics issues from which class of excited states. All this permits to settle the long-standing question of the contribution of bound states to the asymptotics of two-point functions. For instance, when considering the long-distance $m$ behaviour of equal-time correlators, the analysis shows that while, \textit{in fine}, the bound states only produce contributions that are exponentially small in $m$, they also play a key role in cancelling out certain power-law contributions which, should they be present, would break explicitly the universality structure of the long-distance behaviour.
description: 58 pages, 12 figures, V2 a few missprints corrected
Schematiza Chevrolat 1836
Creators: name: Viswajyothi, Keezhpattillam
name: Clark, Shawn M.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Schematiza

description: Genus Schematiza Chevrolat in Dejean 1836
Schematiza Chevrolat in Dejean 1836: 377
(type species Lycus laevigatus Fabricius, 1801, by subsequent designation of Barber 1947b).
Remarks
This genus currently contains 37 described species, distributed from Mexico through much of South America. See Fig. 28 for a habitus illustration. However, some of these species are very similar to those currently in Metrogaleruca. The characteristics of other species currently in Schematiza are intermediate between the two genera. Likely, careful investigation will either reveal the need for synonymizing the two putative genera, or the investigation will lead to the transferal of some species from Schematiza to Metrogaleruca.
description: Published as part of Viswajyothi, Keezhpattillam & Clark, Shawn M., 2022, New World genera of Galerucinae Latreille, 1802 (tribes Galerucini Latreille, 1802, Metacyclini Chapuis, 1875, and Luperini Gistel, 1848): an annotated list and identification key (Coleoptera: Chrysomelidae), pp. 1-102 in European Journal of Taxonomy 842 on page 12, DOI: 10.5852/ejt.2022.842.1945, http://zenodo.org/record/7222499
Wirtinger numbers and holomorphic symplectic immersions
Creators: name: Verbitsky, Misha
Publisher: name: arXiv
Year: 1998
Subjects: subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: Differential Geometry (math.DG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics

description: For any subvariety of a compact holomorphic symplectic Kaehler manifold, we define the number W(X), which we call Wirtinger number. We show that $W(X)\leq 1$, and the equality is reached if and only if the subvariety $X\subset M$ is trianalytic, i. e. compactible with the hyperkaehler structure on M. For a sequence $X_1 \arrow X_2 \arrow ... X_n\arrow M$ of immersions of simple holomorphic symplectic manifolds, we show that $W(X_1) \leq W(X_2) \leq >... \leq W(X_n)$.
description: minor corrections - September 1999; 10 pages
Critical excitation-inhibition balance in dense neural networks
Creators: name: Baumgarten, Lorenz
name: Bornholdt, Stefan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: The "edge of chaos" phase transition in artificial neural networks is of renewed interest in light of recent evidence for criticality in brain dynamics. Statistical mechanics traditionally studied this transition with connectivity $k$ as the control parameter and an exactly balanced excitation-inhibition ratio. While critical connectivity has been found to be low in these model systems, typically around $k=2$, which is unrealistic for natural systems, a recent study utilizing the excitation-inhibition ratio as the control parameter found a new, nearly degree independent, critical point when connectivity is large. However, the new phase transition is accompanied by an unnaturally high level of activity in the network. Here we study random neural networks with the additional properties of (i) a high clustering coefficient and (ii) neurons that are solely either excitatory or inhibitory, a prominent property of natural neurons. As a result, we observe an additional critical point for networks with large connectivity, regardless of degree distribution, which exhibits low activity levels that compare well with neuronal brain networks.
description: 10 pages 8 figures, revised version
title: Braunschweigisches Adreßbuch für das Jahr 1903
Creators: name: :None
Publisher: name: Meyer
Year: 1903
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Stadt Braunschweig
subject: 902

description: Braunschweigisches Adreßbuch, vol. 1903
Persisting Preschoolers: Using Storybooks to Increase Persistence on Difficult Tasks
Creators: Hachigian, Amy
Publisher: name: Columbia University
Year: 2020
Subjects: Cognitive psychology
Persistence
Early childhood education
Picture books for children--Educational aspects
Problem solving in children

description: Persistence is a critical component of problem-solving and is predictive of academic achievement. Despite the crucial importance of fostering persistence during early childhood, most researchers have developed interventions for school settings (e.g., elementary and middle school) rather than formulating strategies and tools to increase persistence for early education settings (e.g., preschools and nursery centers). This dissertation investigates whether and how storybooks can be used to increase preschoolers’ perseverance (assessed via time spent attempting to complete challenging tasks). The researcher-developed books in this study demonstrate how sustained effort towards a difficult goal and the use of multiple problem-solving strategies are essential to goal-achievement despite moments of setback or failure (struggle-stories). To evaluate the effectiveness of the intervention on general perseverance, the amount of time spent on two transfer tasks (puzzle & search and find) was used to measure persistence. Findings did not detect statistically significant differences in persistence between children who simply heard struggle-stories and those who heard non-struggle narratives. Given a reading-only intervention is quite subtle for this young age group, this dissertation also explores two additional strategies used to complement the struggle-stories: roleplaying and praise. Results indicate child-led roleplaying after reading the struggle-stories was not an effective approach; however, children who heard researchers praise characters throughout each reading of the struggle narratives demonstrated statistically significant greater persistence on the transfer tasks. The implications for struggle-story development and the use of additional strategies to increase persistence at home or in the classroom are discussed.
Cynorkis anacamptoides Kraenzl.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Cynorkis
Cynorkis anacamptoides

description: Cynorkis anacamptoides Kraenzl.  —
Habit: Herb.
Habitat: LMWF, LMDF; up to 3 000 m. Distribution: II.
 Voucher: Thiba Fishing Camp, Alt. 1 850 m, 31 Jul. 1977, Gilbert & Rankin 4810A (EA).
 References: Fries et al. (1924a), Bussmann (1994).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 25, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Deconstructing Monopoles and Instantons
Creators: name: Landi, Giovanni
Publisher: name: arXiv
Year: 1998
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We give a unifying description of the Dirac monopole on the 2-sphere $S^2$, of a graded monopole on a (2,2)-supersphere $S^{2,2}$ and of the BPST instanton on the 4-sphere $S^4$, by constructing a suitable global projector $p$ via equivariant maps. This projector determines the projective module of finite type of sections of the corresponding vector bundle. The canonical connection $\nabla = p \circ d$ is used to compute the topological charge which is found to be equal to -1 for the three cases. The transposed projector $q=p^t$ gives the value +1 for the charges; this showing that transposition of projectors, although an isomorphism in $K$-theory, is not the identity map. We also study the invariance under the action of suitable Lie groups.
description: latex, 23 pages (one additional page). Additional material at the end of Section 2. and a reference added. Several minor additions throughout the paper
A Survey on Control Design Approaches for Remotely Operated UAVs
Creators: name: Sankaranarayanan, Viswa Narayanan
Publisher: name: IEEE
Year: 2025
Subjects: subject: Unmanned Aerial Devices
subject: Robotics

description: Quadrotors find their roles in various sectors ranging from remote surveillance to autonomous delivery due to their capabilities of hovering, Vertical Take Off and Landing (VTOL) and rapid manoeuvring. They are a viable asset to humans in safety-critical and hazardous operations such as remote inspection and manipulation of tunnels and windmills. These applications induce external disturbances and noises along with the modelling uncertainties in the dynamics. Applications such as aerial manipulation require control from a ground station autonomously or semi-autonomously, which leads to unpredictable delays and lags. In this context, the quadrotor has to perform its goals of following the desired trajectory with minimal deviation and holding its position without any deviation while operating in the environment. So, this article analyses the existing control techniques for the quadrotor tracking problem, which also tackle parametric uncertainties, unknown time-varying delays and ensure safety.
Maxwell Eigenmode approach to the Casimir-Lifshitz Torque
Creators: name: Broer, Wijnand
name: Liow, John Yuh Han
name: Lu, Bing-Sui
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: More than forty years ago, Barash published a calculation of the full retarded Casimir-Lifshitz torque for planar birefringent media with arbitrary degrees of anisotropy. An independent theoretical confirmation has been lacking since. We report a systematic and transparent derivation of the torque between two media with both electric and magnetic birefringence. Our approach, based on an eigenmode decomposition of Maxwell's equations, generalizes Barash's result for electrically birefringent materials, and can be generalized to a wide range of anisotropic materials and finite thickness effects.
description: 20 pages and 2 figures
NordScreen – an interactive tool for presenting cervical cancer screening indicators in the Nordic countries
Creators: name: Veli-Matti Partanen
name: Anttila, Ahti
name: Heinävaara, Sirpa
name: Pankakoski, Maiju
name: Sarkeala, Tytti
name: Bzhalava, Zurab
name: Elfström, Klara Miriam
name: Ameli Tropé
name: Skare, Gry Baadstrand
name: Thorsteinsdottir, Svanhildur
name: Ágústsson, Ágúst Ingi
name: Veerus, Piret
name: Koreinik, Liisa
name: Dillner, Joakim
name: Lönnberg, Stefan
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer
subject: Science Policy

description: Introduction: Quality assurance and improvement of cancer screening programs require up-to-date monitoring systems and evidence-based indicators. National quality reports exist but the definition and calculation of indicators vary making comparisons between countries difficult. The aim is to stimulate collaborative research and quality improvements in screening through freely available, comparable and regularly updated quality indicators. The project currently includes data on cervical cancer screening but population-based screening programs for breast cancer and colorectal cancer may be included in the future. Material and methods: Through a network of Nordic and Baltic screening managers, population-based individual screening data from each country were converted to standard format in each collaborative center, aggregated by the same R program script and then uploaded to the NordScreen online platform. Registry data included all cervical tests except for Finland where only tests based on invitation are included. Results: The NordScreen collaboration has so far collated standardized indicators based on 32.8 million screening tests from four Nordic countries and Estonia. Interactive comparison of test coverage and distribution of women by number of tests are currently possible online. In 2016, the test coverage within a time interval of 5.5 years in the age group 30–64 year-olds was between 78 and 84% in Iceland, Norway and Sweden whereas 70% in Finland. The application allows users to choose indicator specifications interactively. Conclusions: NordScreen is a pilot model for comparable, reliable and accessible cross-country comparisons of cancer screening. Comparability between countries is enhanced by a uniform data structure and standardized calculations. The comparison of coverage rates to national figures shows that the methods used nationally and in the NordScreen project produce similar results.
Person References in Korean
Creators: Song, Gahye
Publisher: name: Columbia University
Year: 2019
Subjects: subject: Language and languages
subject: Education
subject: Korean language
subject: Conversation analysis
subject: Linguistics
subject: FOS: Languages and literature

description: This dissertation is an empirical study on how people refer to themselves, their recipients, and others in everyday Korean conversation. Person reference is a domain of conversation where we observe an essential aspect of human sociality as it is a vehicle through which we indicate our relationships with each other and perform a myriad of other social actions. As person reference is done using a distinct set of linguistic resources available in each language, it is also an important site of cross-linguistic research. Despite its potential to offer insight into how language, culture, and social interaction intersect, research on person reference in languages other than English has been sporadic. This study aims to contribute to the literature by investigating how various referential expressions are used to accomplish social actions, such as assessing, challenging, or persuading, in Korean.
      The study employs the analytic framework of conversation analysis (CA) to analyze approximately 15 hours of video-recorded data, 50 hours of telephone conversations, and a few instances of text messages. My findings show that various marked referring expressions for speaker, recipient, and others are used to accomplish diverse social actions in Korean. First, marked first-person expressions are used to launch a new topically-fitted telling, present others’ perspectives in the environment of advancing a position, and resist the terms of a question. Second, overt reference to recipient is used to mark newsworthiness of speculation made about the recipient and to challenge the recipient’s entitlement claimed in a prior utterance. Finally, switching between unmarked referential form for non-present others and marked quasi-pronouns (QPs) occurs when a telling about the referent transitions between reporting and assessing of action or state. The findings of this study not only contribute to the literature of person reference in social interaction but also benefit practitioners in Korean as a Second or Foreign Language (KSL/KFL) by offering a useful description of how various referential forms in Korean can be employed to achieve a speaker’s interactional agenda.
Case study : Kemmess South mine site reclamation and closure : contaminated sites assessment & remediation (non-core areas)
Creators: name: Cameron, Marc
name: North, Reg
name: Wilkins, Jason
name: Flemming, Liza
Publisher: name: The University of British Columbia
Year: 2012

description: The Kemess South mine site is owned and operated by Northgate Minerals Corporation (NMC), and is a large porphyry gold and copper open-pit mine that is scheduled for closure in 2011. Hemmera was engaged to assess non-core areas of the mine site as defined in the British Columbia (BC) Environmental Management Act to facilitate closure. The Kemess South mine, like most mine sites, is not a typical contaminated site given the remote location relative to populated areas and the scale of the site. Therefore, applying standard BC Contaminated Sites Regulation approaches and guidelines are not only inefficient and more costly than necessary, but potentially unnecessary to achieve the closure objective and regulatory acceptability. Hemmera implemented a risk-based approach to develop an appropriate level of field investigation and data evaluation that would be responsive to the needs of NMC. Hemmera used a conceptual model approach where contaminant sources and the receiving environment were determined prior to conducting investigations. A data gap field investigation was initiated to support a Screening Level Risk Assessment (SLRA). The results of the SLRA risk assessment identified areas requiring risk management (including further investigation, remediation or more detailed risk assessment) or no further action. Using these results Hemmera completed a remedial action plan as part of the overall strategy to successfully address the contaminated sites aspects of the Kemess South mine site closure plan. Overall the mine site contamination was not considered extensive based on the application of a site specific risk based approach. Consequently, extensive remediation was not required nor recommended in as part of the overall mine site closure plan.
Personal motivation and child protection decision-making: The role of regulatory focus in removal recommendations
Creators: Feldman, Sara Wolf
Publisher: name: Columbia University
Year: 2011
Subjects: Social service

description: Decision-making in the field of child protection has been the subject of focused study for decades, propelled by repeated reports of its questionable reliability. Although researchers have examined the extent to which caseworker characteristics influence child protection decision-making, studies into the influence of caseworker motivation on decision-making is scarce. This initial study into the regulatory focus of child protection investigators adds to the nascent body of knowledge on the impact of caseworker motivation on the specific decision of whether to place a child in out-of-home care. Drawing from Higgins' (1997) regulatory focus theory this study seeks to explain, at least in part, why caseworkers make the kinds of decisions they do. It was hypothesized that child protection investigators' placement recommendations would be related to their regulatory focus generally speaking, and in more pronounced ways for investigators with a strong prevention focus. A sample of 100 child protection investigators employed by a large urban public child welfare agency participated in the study, in which workplace regulatory focus was measured using the Work Regulatory Focus scale. Participants were asked to read and react to two vignettes adapted from actual child protection cases. Following each vignette were questions regarding placement recommendations, assessments of risk, and emotional reactions to reading the vignettes. Socio-demographic information was also collected. Findings suggest a relationship between regulatory focus and placement recommendations, although test statistics at the margin of statistical significance and low power preclude definitive statements as to whether the null hypotheses can truly be rejected. Interpretation is made more difficult given the duality that characterized the regulatory focus of this sample of child protection investigators, with more than half of the sample scoring high on both the prevention and promotion subscales of the WRF scale. Implications for future research and practice are discussed.
Personal Freedom and Its Discontents: Hegel on the Ethical Basis of Modern Skepticism
Creators: Katz, Gal
Publisher: name: Columbia University
Year: 2017
Subjects: subject: Philosophy
subject: FOS: Philosophy, ethics and religion
subject: Skepticism
subject: Ethics

description: Can an error be rational? Hegel traces modern skepticism to the mistaken idea that the object of knowledge is ontologically separate from our rational, subjective minds. Once we subscribe to this idea—which John McDowell has called “the basic misconception of modern philosophy”—we can only represent reality as it appears to us, as subjects, rather than know it in-itself, as it is independently of us. However, and contrary to McDowell and other prominent commentators, I argue that Hegel takes this mistake to be ethically rational; it is grounded in basic and enduring features of the modern socio-political order, features that are necessary for individual freedom and for economic and cultural development. And yet, while it is neither possible nor desirable to eliminate modern skepticism, I argue that Hegel’s social theory offers ethical arrangements that are meant to mitigate its potentially nihilistic effects. I reconstruct his account of the modern (nuclear) family as a case of what I call an “ethical remedy” to skepticism.
Persistence in Consumer Search
Creators: Reinholtz, Nicholas Stephen
Publisher: name: Columbia University
Year: 2015
Subjects: subject: Marketing
subject: FOS: Economics and business
subject: Searching behavior
subject: Consumer behavior--Psychological aspects
subject: Psychology, Experimental

description: In this dissertation, I explore determinants, and some consequences, of persistence in consumer search. Many prominent thinkers have considered the problem of search in terms of optimal solutions, or their heuristic approximations. In the following research, I explore persistence in search not merely as a function of economic calibration, but rather as an outcome determined by both cognitive and motivational processes. I provide evidence that normative models of search are insufficient to explain the behavior of those whom I study. Instead, I show cases in which search persistence is a function of prior behavior (Chapter 1) and prior beliefs (Chapter 2). I further propose a cognitive model of price search behavior (Chapter 3) that can predict many of the observed behaviors that would be considered mistakes in normative price search frameworks (e.g., variance neglect, reference point effects, local contrast effects).