cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Strategies and Tactics for the Synthesis of Polycyclic Alkaloids
Creators: Elsohly, Adel Mahmoud
Publisher: name: Columbia University
Year: 2012
Subjects: Chemistry, Organic

description: The myrmicarin family of oligomeric natural products comprises one of the most ornate collections of polycyclic alkaloids known. The structural characterization of their unique scaffolds was accomplished through elegant spectroscopic studies. Furthermore, the synthesis of these alkaloids has attracted the attention of the synthetic community, with several syntheses of the monomeric myrmicarins completed. Significant effort has been put forth toward the synthesis of the higher order structures, though no successful approach has been reported to date. These isolation and characterization studies as well as synthetic approaches toward the family are reviewed. Chapter 2. The Evolution of Efficient, Enantioselective Total Syntheses of Monomeric Myrmicarin Alkaloids. In order to provide a family-level solution to the myrmicarin alkaloids, we adopted a strategy-level approach to their synthesis. Utilizing concepts from retrosynthetic analysis and diversity oriented synthesis, an enantioselective and highly streamlined synthesis of the monomeric myrmicarin alkaloids as well as potential dimerization precursors was established from a common intermediate with late stage diversification. Chapter 3. Dimerization Studies toward the Synthesis of Myrmicarin 430A. An alternative strategy for the synthesis of myrmicarin 430A is presented using a dienamine precursor. This approach allows for the stereoselective synthesis of the all trans stereotriad of the central cyclopentane moiety of myrmicarin 430A. Mechanistic aspects concerning the final bond closure are presented in light of quantum chemical calculations. Chapter 4. An Introduction to the Securinega Alkaloids and NHC Catalysis The Securinega alkaloids comprise a large family of tetracyclic alkaloids, many of which contain a conjugated butenolide moiety. While many distinct synthetic approaches have appeared for the synthesis of members of this family, only a relatively small number of approaches are applied to the synthesis of the butenolide portion of these natural products. The various synthetic endeavors to accessing this structural motif are presented. NHC catalysis is a growing field of research for its ability to promote unusual chemical transformations. As this field of research is of relevance to our latter studies, a brief overview of modern NHC catalysis is presented. Chapter 5. Development of an NHC-Catalyzed Cascade Reaction to Access the Core Architecture of the Securinega Alkaloids. In targeting the family of Securinega alkaloids, a retrosynthesis was devised that proposes a novel intramolecular cyclization approach of an ynal and ketone to deliver the bridging butenolide moiety of these natural products. The development of this reaction and its application toward the synthesis of various Securinega alkaloids is presented.
Numerical analysis of effect of mitigation measures on seismic performance of a liquefiable tailings dam foundation
Creators: name: Lee, Yong-Beom
name: Castillo, Jorge
Publisher: name: The University of British Columbia
Year: 2016

description: This paper addresses the earthquake response of a tailings dam with liquefiable sandy-gravel foundation. Geometry of the analyzed dam and the considered foundation conditions are typical for valley compacted earth and rockfill dams in the Andes of South America. Loose to medium-dense saturated sandy-gravel foundation conditions can compromise stability of the tailings dam, especially in active seismic zones where large magnitude earthquakes may induce liquefaction of the saturated alluvial foundation material eventually culminating in flow failure beneath the downstream section of the dam. Results of dynamic liquefaction analyses of the tailings dam – foundation system, considering alternatives for liquefaction mitigation (i.e., downstream buttress and/or in-situ foundation improvement) under two different seismic loading scenarios are presented and discussed. The effectiveness of the analyzed liquefaction mitigation measures is evaluated in terms of earthquake-induced deformations of the existing starter dam and of the proposed ultimate dam configuration. The dynamic liquefaction analyses were conducted using a non-linear two-dimensional finite-difference scheme along with a fully-coupled effective stress constitutive model. The selected geotechnical parameters and input earthquake time records as well as constitutive model calibration to laboratory test results are discussed in the paper. Results from the idealized case study analyses of both buttress and foundation improvement alternatives showed that the foundation improvement is the most effective to mitigate the liquefaction hazard for the ultimate dam configuration subject to earthquake loading.
Tenthredo oculissima Konow 1907
Creators: name: Taeger, Andreas
name: París, Mercedes
name: Nieves-Aldrey, Jose Luis
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Tenthredo
Tenthredo oculissima

description: Tenthredo oculissima Konow, 1907
A valid species, Tenthredo oculissima Konow, 1907.
Types. Tenthredo oculissima Konow, 1907b: 173. Syntypes ♂ ♀, “ Sikkim ”. Lectotype ♂, hereby designated (MNCN_ Ent 100215, MNCN Cat. Tipos Nº 8139, Fig. 31, see also http://dx.doi.org/10.6084/m9.figshare.765451). Type locality: India, Sikkim. Paralectotypes: 1 ♀ (MNCN _ Ent 100216, MNCN Cat. Tipos Nº 8139, http:// dx.doi.org/10.6084/m9.figshare.765453), 1 ♂ 1 ♀ (SDEI, http://dx.doi.org/10.6084/m9.figshare.766197), all labeled “ Sikkim ”.
Discussion. Malaise (1945: 211) considered a female (perhaps the specimen from MNCN) as “the type”, whereas Saini (2007: 134) erroneously noted that the holotype ♀ and a couple of paratypes should be in the SDEI. The species shows a very distinct sexual dimorphism.
description: Published as part of Taeger, Andreas, París, Mercedes & Nieves-Aldrey, Jose Luis, 2014, The type specimens of sawflies (Hymenoptera: Symphyta) of the Museo Nacional de Ciencias Naturales, Madrid, pp. 103-138 in Zootaxa 3790 (1) on pages 127-128, DOI: 10.11646/zootaxa.3790.1.5, http://zenodo.org/record/4914035
Enstrophy and dissipation must have the same scaling exponent in the high Reynolds number limit of fluidturbulence
Creators: name: Nelkin, Mark
Publisher: name: arXiv
Year: 1998
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Writing the Poisson equation for the pressure in the vorticity-strain form, we show that the pressure has a finite inertial range spectrum for high Reynolds number isotropic turbulence only if the anomalous scaling exponents $μ$ and $μ_ω$ for the dissipation and enstrophy (squared vorticity) are equal. Since a finite inertial range pressure spectrum requires only very weak assumptions about high Reynolds number turbulence, we conclude that the inference from experiment and direct numerical siimulation that these exponents are different must be a finite range scaling result which will not survive taking the high Reynolds number limit.
description: 3 pages, revtex, no figures
Heat transfer in a nonequilibrium spin-boson model: A perturbative approach
Creators: name: Wu, Wei
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the heat transport in a nonequilibrium spin-boson model, where a two level system bridging two harmonic reservoirs at different temperatures, by employing a unitary transformation along with a resolvent operator expansion technique. Analytical expressions of the heat current and the thermal conductance of this model are obtained. Compared with the performances of other methods, namely, the nonequilibrium Green's function method and the equation of motion formulation, our approach provides a reasonable description of heat transfer properties of the nonequilibrium spin-boson model for the weak-coupling region at low temperature.
description: Some errors need to be revised
Supplementary Figures and Table from Diel oxygen fluctuation drives the thermal response and metabolic performance of coastal marine ectotherms
Creators: name: Booth, J. M.
name: Fusi, M.
name: Giomi, F.
name: Chapman, E. C. N.
name: Diele, K.
name: McQuaid, C. D.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Ecology
subject: FOS: Biological sciences

description: Coastal marine systems are characterized by high levels of primary production that result in diel oxygen fluctuations from undersaturation to supersaturation. Constant normoxia, or 100% oxygen saturation, is therefore rare. Since the thermal sensitivity of invertebrates is directly linked to oxygen availability, we hypothesized that (i) the metabolic response of coastal marine invertebrates would be more sensitive to thermal stress when exposed to oxygen supersaturation rather than 100% oxygen saturation and (ii) natural diel fluctuation in oxygen availability rather than constant 100% oxygen saturation is a main driver of the thermal response. We tested the effects of oxygen regime on the metabolic rate, and haemocyanin and lactate levels, of velvet crabs (Necora puber) and blue mussels (Mytilus edulis), under rising temperatures (up to 24°C) in the laboratory. Oxygen supersaturation and photosynthetically induced diel oxygen fluctuation amplified animal metabolic thermal response significantly, highlighting that the natural variability of oxygen in coastal environments can provide physiological benefits under ocean warming. Experimental assessments of animal physiology and thermal response, and predictions of metabolic performance under climate warming, should include ecologically relevant oxygen variability. Given the escalating intensity and frequency of climate anomalies, oxygen variation caused by coastal vegetation will likely become increasingly important in mitigating the effects of higher temperatures on coastal fauna.
Geometric and unipotent crystals
Creators: name: Berenstein, Arkady
name: Kazhdan, David
Publisher: name: arXiv
Year: 1999
Subjects: subject: Quantum Algebra (math.QA)
subject: Algebraic Geometry (math.AG)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: In this paper we introduce geometric crystals and unipotent crystals which are algebro-geometric analogues of Kashiwara's crystal bases. Given a reductive group G, let I be the set of vertices of the Dynkin diagram of G and T be the maximal torus of G. The structure of a geometric G-crystal on an algebraic variety X consists of a rational morphism γ:X-->T and a compatible family e_i:G_m\times X-->X, i\in I of rational actions of the multiplicative group G_m satisfying certain braid-like relations. Such a structure induces a rational action of W on X. Quite surprisingly, many interesting rational actions of the group W come from geometric crystals. Also all the known examples of the action of W which appear in the construction of gamma-functions for the representations of ^LG in the recent work by A. Braverman and D. Kazhdan come from geometric crystals. There are many examples of positive geometric crystals on (G_m)^l, i.e., those geometric crystals for which the actions e_i and the morphism γare given by positive rational expressions. To each positive geometric crystal X we associate a Kashiwara's crystal corresponding to the Langlands dual group ^LG. An emergence of ^LG in the "crystal world" was observed earlier by G. Lusztig. Another application of geometric crystals is a construction of trivialization which is an W-equivariant isomorhism X-->γ^{-1}(e) \times T for any geometric SL_n-crystal. Unipotent crystals are geometric analogues of normal Kashiwara crystals. They form a strict monoidal category. To any unipotent crystal built on a variety X we associate a certain gometric crystal.
description: AMS LaTeX, 39 pages. Some typos are corrected
D7.3 Report on Standardisation and Regulation Activities
Creators: name: Cosmas, John
name: Savov, Atanas
name: Gbadamosi, James
name: Song, Jian
name: Kapovits, Adam
Publisher: name: Zenodo
Year: 2019

description: This deliverable summarises the first year activities within the H2020 IoRL project concerning standardization and regulation, which focused on establishing a strategy for influencing standardization through identifying the most promising activities where the project sees a chance for successfully contributing and helping to maximize its impact.
 Our starting point was the architecture of the Internet of Radio-Light proposed solution, and its key components. As a next step the Key Performance Indicators (KPIs) were identified and the experiments required to measure each of them are also described briefly. Next the 3GPP and IMT-2020 standardisation activities were surveyed and the relevant IoRL architectural components and KPI experiments were mapped to those standardization activities. Finally, we selected the standardisation activities where the project team assessed to have a chance to successfully contributing with its architectural and KPI contributions.
Figure S1 - Locations of data; Figure S2 - The stratigraphic range of Palaeocene taxa at Site 1262; Figure S3 - Summed coefficient of variation metric (∑CV) ranked in order.; Table S2 – Ecological groupings used in this study.; Raw data (species, size and weights) from Ecosystem function after the K/Pg extinction: decoupling of marine carbon pump and diversity
Creators: name: Birch, Heather
name: Schmidt, Daniela N.
name: Coxall, Helen K.
name: Kroon, Dick
name: Ridgwell, Andy
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 40308 Palaeontology (incl. Palynology)
subject: FOS: Earth and related environmental sciences

description: Figure S1 - Location of ODP Site 1262 at Walvis Ridge, South East Atlantic in yellow. Plate reconstruction for the K/Pg interval created using the R package Chronosphere and Seton et al. (2012) configuration [1]. Additional sites discussed in the text are also included in red.; Figure S2 - The stratigraphic range of Palaeocene taxa at Site 1262. Colours denote ecogroups, Green = surface symbiotic, Light blue = transitional, dark blue= thermocline and orange = survivors and opportunists (see methods for full details). Ages are based on the tuning of the records to the latest orbital solution La2011, [2]. Horizontal black dashed line represents the K/Pg boundary and coloured numbered lines relate to significant steps in the recovery process; 1 – initial partial recovery of the surface-to-deep carbon gradients, 2 – ‘Full’ carbon gradient recovery, 3 –appearance of photosymbiotic ecologies (see [3] for details) and 4 – ‘Full’ planktic biotic recovery.; Figure S3 – Summed coefficient of variation metric (∑CV) ranked in order. Red dashed line indicates an inflection point at the higher values of (∑CV), denoting above background variation (following the method of [4,5].; Table S2 – Ecological groupings used in this study. The transitional taxa are those taxa lineages that start out as thermocline dwellers, but later adopt a surface and/or symbiotic ecology. Within the Eoglobigerina lineage, E. eobulloides and E. edita are thermocline dwellers whereas E. spiralis is a surface dweller [6–8]. Within the Pramurica lineage, P. taurica and early P. pseudoinconstans and P. inconstans were thermocline dwellers, but later P. pseudoinconstans and P. inconstans and P. uncinata were surface symbiotic species [8]. For Cretaceous taxa, where no species-specific data was available the generic level ecogroup was used.; Raw data used in this study.
Strategies for the Concise Synthesis of the Akuammiline Alkaloids
Creators: Smith, Myles Warwick
Publisher: name: Columbia University
Year: 2015
Subjects: Alkaloids--Synthesis
Chemistry
Alkaloids
Chemistry, Organic

description: The akuammiline alkaloids are an intriguing class of natural products that display an array of biological activities and structural diversity. Despite being known for over 125 years, it is surprising that these complex monoterpene indole alkaloids have only recently elicited sustained interest from the synthetic community, especially given the storied history of this broad family in the development of the art of total synthesis, and, in particular, heterocyclic chemistry. This dissertation details our efforts to address these deficiencies through work directed at the unique akuammiline alkaloid (+)-scholarisine A, ultimately yielding a concise and enantiospecific preparation of this challenging target. Building on this initial success, we have initiated studies aiming to generalize these strategies to the akuammiline class as whole, efforts that have been empowered by the development of several novel synthetic transforms. These investigations have culminated in the efficient synthesis of a collection of advanced intermediates en route to the varied frameworks represented by strictamine and 10-demethoxynorvincorine. In addition, we have leveraged our expertise gained within these challenging contexts towards a method with utility beyond the akuammiline class, one that is likely to find broad application in both natural product synthesis and the assembly of medicinally-relevant building blocks.
Late time behaviour of the maximal slicing of the Schwarzschild black hole
Creators: name: Beig, R.
name: Murchadha, N. Ó
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A time-symmetric Cauchy slice of the extended Schwarzschild spacetime can be evolved into a foliation of the $r>3m/2$-region of the spacetime by maximal surfaces with the requirement that time runs equally fast at both spatial ends of the manifold. This paper studies the behaviour of these slices in the limit as proper time-at-infinity becomes arbitrarily large and gives an analytic expression for the collapse of the lapse.
description: 18 pages, Latex, no figures
title: Geschlossene Raumkurven mit Normalrissen von verschwindendem Flächeninhalt
Creators: name: Müller, Hans
Publisher: name: Goltze
Year: 1993
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Abhandlungen der BWG
subject: 51

description: Es werden geschlossene Raumkurven des dreidimensionalen euklidischen Raums gesucht, deren Normalprojektionen auf beliebige Ebenen des Raumes ebene Kurven vom orientierten Flächeninhalt Null sind.
Veronica glandulosa Benth.
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
Magnoliopsida
Lamiales
Plantaginaceae
Veronica
Veronica glandulosa

description: Veronica glandulosa Hochst. ex Benth.  —
Habit: Herb.
Habitat: BZ, UMF, HZ, AZ; 1 900–4 200 m. Distribution: II.
 Voucher: Near Meru Mount Kenya Lodge, Alt. 2 994 m, 21 Jul. 2014, SAJIT 001975 (HIB).
References: Blundell (1987), Bussmann (1993, 1994), Hedberg & Hedberg (2003), Abdi (2013), 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 81, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Supplementary tables, figures and results from Hosts elevate either within-clutch consistency or between-clutch distinctiveness of egg phenotypes in defence against brood parasites
Creators: name: Caves, Eleanor M.
name: Dixit, Tanmay
name: Colebrook-Robjent, John F. R.
name: Hamusikili, Lazaro
name: Stevens, Martin
name: Thorogood, Rose
name: Spottiswoode, Claire N.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 60801 Animal Behaviour

description: Supplemental figures and tables for the results in the main text, and supplementary analysis and results using an MDPS approach
Stella Degradation
Creators: name: Hope, Cat
Publisher: name: Monash University
Year: 2019
Subjects: subject: 190406 Music Composition
subject: FOS: Arts (arts, history of arts, performing arts, music)

description: This piece is inspired by a sketch Iannis Xenakis made for his piece Terretektorh (1956-66). Whilst there are many sketches for this famous piece, one is a combination of clouds of gentle lines, as well as hard symmetrical ones, grouped out on graph paper. This piece features many of the elements that are part of my ongoing interest in glissandi, drone, noise and an exploration of the concepts around the low frequency range of music.
It was commissioned by the Sound Stream Collective and is dedicated to Gabriella Smart.
You need the Decibel Score Player to read this peice on an ipad, and the score file to insert. ​A digital or hard copy of the score is available from Material Press.
Performances:
Quintet version premiered at Sound Spectrum Festival, "Shock of the New", WAAPA, October 2012 [Live video below]
Duo version premiered at Samstag Museum of Art as part of Crowd Theory Adelaide, by Canadian's Eric Soucy (viola) and Peter Handsworth (clarinet).
Press
"Cat Hope's 2012 Stella Degradation explored sound and noise at their most visceral and with its echoes of Xenakis evoked a wonderfully decadent blast from the past, although composed for the present. After so many years of postmodernism it was quite refreshing to soak up once more the extended technique sounds redolent of the 1960s, even if Soucy and Handsworth were using up-to-the-minute technology, with a tablet on their shared music desk scrolling along its graphic notation for them." Adelaide Now.
Modelling of pit lake filling scenarios using a coupled physical and biogeochemical model
Creators: name: Martin, Alan J.
name: Fraser, Colin
name: Dunbar, Donald Stanley, 1953-
name: Mueller, Seth
Publisher: name: The University of British Columbia
Year: 2017

description: Pit lakes are a common post-closure feature at mine sites where open pits are allowed to fill with groundwater and surface runoff. The large volume of pit lakes and their potential role in water management make them a focal point of closure planning. Pit lakes can be allowed to fill passively, or alternatively, filling can be engineered to best meet closure objectives. In this paper, engineered filling scenarios are modelled using PitMod, a coupled physical-biogeochemical pit lake model. The filling scenarios considered include: 1) slow filling, involving the routing of clean surface waters away from the open pit; and 2) staged filling, involving initial filling of the pit with contaminated seepages, followed by freshwater inflows. The model results indicate that considerable benefits can be realized for pit lake surface water quality under engineered filling scenarios. Benefits relate to: 1) development of permanent stratification (meromixis) and development of sulfate reducing conditions in anoxic lake bottom waters; 2) physical and chemical isolation of poor water quality in pit bottom waters; 3) development of surface water quality conditions more conducive to in-pit bioremediation; and 4) delay of pit filling, allowing greater time to reduce contaminant concentrations prior to pit lake overflow.
On the hierarchy of neutrino masses
Creators: name: Jezabek, M.
name: Urban, P.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a model of neutrino masses combining the seesaw mechanism and strong Dirac mass hierarchy and at the same time exhibiting a significantly reduced hierarchy at the level of active neutrino masses. The heavy Majorana masses are assumed to be degenerate. The suppression of the hierarchy is due to a symmetric and unitary operator R whose role is discussed. The model gives realistic mixing and mass spectrum. The mixing of atmospheric neutrinos is attributed to the charged lepton sector whereas the mixing of solar neutrinos is due to the neutrino sector. Small U_e3 is a consequence of the model. The masses of the active neutrinos are given by $μ_3\approx\sqrt{Δm_{@}^2}$ and $μ_1/μ_2\approx \tan^2θ_\odot$.
description: 12 pages; Talk presented by M. Jezabek at 'Supersymmetry and Brane Worlds,' Fifth European Meeting Planck 02, Kazimierz, Poland, May 25-29, 2002, to appear in Acta Phys. Polon. B
Characterization and toxicity of Bacillus thuringiensis serovar chanpaisis (H46): A serovar from Thailand
Creators: name: Prakai Rajchanuwong
name: Jariya Chanpaisaeng
name: Suttipun Kaewsompong
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2019
Subjects: Bacillus thuringiensis
cry gene
crystal protein
mosquitoes
Thailand

description: Songklanakarin Journal of Science and Technology, 41, 4, 804-812
Muon anomalous magnetic moment, Z boson decays, and collider physics in multi-charged particles
Creators: name: Nomura, Takaaki
name: Okada, Hiroshi
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze allowed region of muon anomalous magnetic moment (muon $g-2$), satisfying lepton flavor violations, $Z$ boson decays, and collider physics, in a framework of multi-charged particles. Then we explore the typical size of the muon $g-2$, and discuss which modes dominantly affect muon $g-2$.
description: 17 pages, 8 figures, 1 table, version accepted for publication in physical review D
Traces and determinants of strongly stochastic operators
Creators: name: Dettmann, C. P.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Periodic orbit theory allows calculations of long time properties of chaotic systems from traces, dynamical zeta functions and spectral determinants of deterministic evolution operators, which are in turn evaluated in terms of periodic orbits. For the case of stochastic dynamics a direct numerical evaluation of the trace of an evolution operator is possible as a multidimensional integral. Techniques for evaluating such path integrals are discussed. Using as an example the logistic map f(x) = lambda x(1-x) with moderate to strong additive Gaussian noise, rapid convergence is demonstrated for all values of lambda with strong noise as well as at fixed lambda = 5 for all noise levels.
description: revtex, 4 pages
TIANGUIS DE TRUEQUE EN MÉXICO
Creators: name: Arellanes-Cancino, Yaaye
name: Aguilar, Eduardo Enrique
Publisher: name: figshare
Year: 2021
Subjects: subject: 160505 Economic Development Policy
subject: FOS: Political science

description: Mexico has various spaces to purchase items and stock up on what we need, from transnational supermarkets, markets and flea markets to corner stores. In particular, in the tianguis we find local products and services that allow the supply of thousands of families in all regions of the country. In many of them there are non-monetary exchanges, that is, one resource is obtained or in exchange for another: barter is carried out. In the tianguis that are based on bartering, there are more elements at stake than just the economic ones; the affections, the emotions, the stories, and / or the bonds of compadrazgo are added, which end up being as important as the obtaining of profits or the value of the objects. The exchange markets are more frequent in indigenous and rural spaces, and have been taken up and proposed for their advantages in urban areas. In our country, the tianguis have persisted since pre-Hispanic times and today, within the current economic crisis that has been aggravated by the SARS-CoV-2 health contingency, these barter spaces become a solidarity alternative in the countryside and the city.
title: Abzählbar-primitive Ultrafilter
Creators: name: Kowalsky, Hans-Joachim
Publisher: name: Goltze
Year: 1993
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Abhandlungen der BWG
subject: 510

description: Die Menge U aller Ultrafilter einer hier zunächst als abzählbar unendlich vorausgesetzten Grundmenge X kann in bekannter Weise mit einer Präordnung < versehen werden: Für je zwei Ultrafilter u,v sei u < v gleichwertig damit, daß es eine Abbildung [phi]: X -> X mit [phi]v = u gibt. Hinsichtlich der zu dieser Präordnung gehörenden Äquivalenzrelation ~ gilt für zwei Ultrafilter u,v genau dann u~v, wenn es Abbildungen [phi],[psi] mit [phi]v = u und [psi]u = v gibt. Dies ist gleichwertig damit, daß [phi] auf einer Filtermenge V e v injektiv ist und daß bei dieser Einschränkung dann [psi] die Umkehrabbildung von [phi] ist. Alle gebundenen Ultrafilter, nämlich die von einpunktigen Mengen erzeugten Hauptfilter, sind äquivalent und minimal hinsichtlich der Präordnung. Obere Nachbarn von ihnen sind die bekannten primitiven Ultrafilter. Darüber hinaus ist die durch die Präordnung bestimmte Struktur von U jedoch äußerst kompliziert. Um übersichtlichere Verhältnisse zu gewinnen, ist es daher naheliegend, zunächst spezielle Teilmengen von U bezüglich der induzierten Präordnung zu untersuchen. Die vorliegende Arbeit stellt einen Anfang in dieser Richtung dar. Sie bezieht sich auf abzählbar-primitive Ultrafilter, die sich mit einem bekannten Prozeß aus abzählbar vielen primitiven Ultrafiltern aufbauen lassen. Ihre Ordnungsstruktur und im Zusammenhang damit ihr Abbildungsverhalten sowie die Bestimmung unterer und oberer Nachbarn sind der hauptsächliche Gegenstand dieses ersten Teils der Untersuchungen.
The Sinister Glamour of Modernity
Creators: name: Hope, Cat
Publisher: name: Monash University
Year: 2019
Subjects: subject: 190406 Music Composition
subject: FOS: Arts (arts, history of arts, performing arts, music)

description: For two instruments.
​Dedicated to Dawn Bennett.
​
Premiered: Dawn Bennett (viola) and Diana Blom (piano), Curtin University April 2, 2013 with futher performances at University of Western Sydney and Edith Cowan University.
Vibraphone and viola version premiered by Pheobe Green and Leah Scholes in Melbourne, June 2016, with further performances at Griffith University and Sydney Conservatorium
​Laptop version premiered by Judy Curry at University of Centra Missouri, USA in November 2016.

..."an exceptionally creepy, spidery sound underpinning the viola’s drunken, careening lines." is Mathew Lorenzon, 2016 Partial Durations.

This piece for explores ways different instruments describe the tracing of memory. Can the things that happen in a place or time be somehow recorded or remembered if there is no 'physical' evidence of them? Using the performers aural skills to find and trace each others pitch and dynamic choices - not provided in the score - this work uses the concept of the sustained note as a parallel to a longterm memory etch. The work is inspired by Australian author Ross Gibson's book ' Seven Versions of an Australian Badlands', and the title is taken from one of the chapters of that book. E-bows are used on the piano to create ghost like sustained tones uncharacteristic of the piano.

To perform this piece, you will need the score file and the Decibel Score Player which you will need to read on an iPad. You can also read it a a video. A digital or hard copy of the score is available from Material Press.
Below is the score to this peice, a recording on viola and piano and a performance by a laptop performer.
Veronica gunae Engl.
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
Magnoliopsida
Lamiales
Plantaginaceae
Veronica
Veronica gunae

description: Veronica gunae Schweinf. ex Engl.  —
Habit: Herb.
Habitat: HZ, NZ; 2 600–4 300 m. Distribution: II.
 Voucher: Chogoria Track, Alt. 4044 m, 20 Jul. 2014, SAJIT 001932 (HIB).
References: Young & Peacock (1985), Bussmann (1993, 1994), Hedberg & Hedberg (2003), 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 81, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Generalized ADT charges and asymptotic symmetry algebra
Creators: name: Kulkarni, Shailesh
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using the expressions for generalized ADT current and potential in a self consistent manner, we derive the asymptotic symmetry algebra on AdS$_3$ and the near horizon extremal BTZ spacetimes. The structure of symmetry algebra among the conserved charges for asymptotic killing vectors matches exactly with the known results thus establishing the algebraic equivalence between the well known existing formalisms for obtaining the conserved charges and the generalized ADT charges.
description: 14 pages, typos corrected, references added, to appear in EPJP
Estimating conditional heteroscedastic nonlinear autoregressive model by using smoothing spline and penalized spline methods
Creators: name: Autcha Araveeporn
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2019
Subjects: conditional heteroscedastic nonlinear autoregressive model
smoothing spline method
penalized spline method

description: Songklanakarin Journal of Science and Technology, 41, 4, 813-821
Supplementary Materials from Divergent regional evolutionary histories of a devastating global amphibian pathogen
Creators: name: Rothstein, Andrew P.
name: Byrne, Allison Q.
name: Knapp, Roland A.
name: Briggs, Cheryl J.
name: Voyles, Jamie
name: Richards-Zawacki, Corinne L.
name: Rosenblum, Erica Bree
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: 60408 Genomics

description: Supplemental Methods, Figures(S1-7), and References
Challenges in the Development of Reference Materials for Protein Toxins
Creators: name: Zeleny, Reinhard
name: Rummel, Andreas
name: Jansson, Daniel
name: Dorner, Brigitte
Publisher: name: Robert Koch-Institut
Year: 2019
Subjects: subject: 610 Medizin und Gesundheit

description: High molecular weight protein toxins produced by bacteria, e.g. staphylococcal enterotoxins and botulinum neurotoxins, as well as plant toxins such as ricin and abrin, are relevant analytes in different application areas: food safety, public health, civil security and defense sector, and – in case of botulinum neurotoxins – also in pharmaceutics. For their reliable and accurate detection, identification and quantification, reference materials (RMs), in particular certified reference material (CRM), are required. The present article focuses on challenges in the development (production and certification) of such RMs. Firstly, it highlights the role of RMs and CRMs, what they can be used for, the nature of certified properties, metrological traceability, and uncertainty of certified values, as well as commutability of RMs. Secondly, the molecule-specific technical challenges are highlighted using the example of the mentioned toxins. This includes for instance the choice of a suitable purification strategy (recombinant expression and purification versus the purification of toxin from natural sources), the in-depth characterization of the obtained preparations by a comprehensive set of methods including immunochemical assays, mass spectrometry, and functional assays to verify their identity and establish their purity and activity, and finally, suitable approaches for determining reference values of important toxin properties (protein mass concentration in solution, biological activity). The article summarizes ongoing activities in a new European initiative called EuroBioTox, which aims at the production and certification of RMs for selected protein toxins and the establishment of validated procedures for the detection and identification of biological toxins.
On asymptotic behaviour of Dirichlet inverse
Creators: name: Baustian, Falko
name: Bobkov, Vladimir
Publisher: name: arXiv
Year: 2019
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11A25, 11N37, 11N56

description: Let $f(n)$ be an arithmetic function with $f(1)\neq0$ and let $f^{-1}(n)$ be its reciprocal with respect to the Dirichlet convolution. We study the asymptotic behaviour of $|f^{-1}(n)|$ with regard to the asymptotic behaviour of $|f(n)|$ assuming that the latter one grows or decays with at most polynomial or exponential speed. As a by-product, we obtain simple but constructive upper bounds for the number of ordered factorizations of $n$ into $k$ factors.
description: 16 pages. Section 3.1 has been slightly expanded. Minor improvements have been incorporated according to referee's suggestions. Accepted to International Journal of Number Theory
Strategies for the Controlled Synthesis of Oligomeric Natural Products
Creators: Kontes, Ferenc
Publisher: name: Columbia University
Year: 2011
Subjects: Chemistry, Organic
Chemistry
Drugs

description: 1 - Total Syntheses of Helicterin B, Helisorin, and Helisterculin A - The total synthesis of three members of the helicterin family of natural products, helicterin B, helisorin and helisterculin A, was completed from a common, non-biomimetic intermediate. This work featured the development of a complex retro Diels-Alder/Diels-Alder sequence, a Friedel-Crafts ring closure resulting in a highly strained ring-system, an acid-catalyzed hydroxyketone rearrangement, a Lewis acid-promoted dimerization of a bicyclooctene monomer, and the use of a novel phenol protecting group. 2 - Synthetic Studies of an Alternative Diels-Alder Approach Towards the Helicterin and the Yunnaneic Acid Families of Natural Products - Efforts towards the development of an enantioselective synthesis of the helicterin natural products are presented. Given the failure of known methods to achieve this goal, a novel Diels-Alder approach based on a revised biosynthetic proposal was explored. This method achieved a bicyclooctene framework with good stereoselectivity, but its conversion to the natural product core proved challenging. Additionally, a Diels-Alder approach to the core of the yunnaneic acids was developed, one in which the effective reversal of the regiochemical preference of the reaction was achieved. 3 - Small Molecule Inhibitors of Cell Death in a Huntington's Disease Model - A compound based on the core of the helicterin natural products with the ability to prevent cell death in a Huntington's Disease model system was identified. Although its mechanism of action is unknown, its cellular target appears to be distinct from that of prior inhibitors. A number of analogs based on this initial hit were synthesized, and structure-activity relationships were explored. 4 - Synthetic Studies Towards a Biomimetic Approach to the Myrmicarin Alkaloids - The shortest and highest yielding synthesis of the monomeric myrmicarin alkaloids to date has been completed, and the stereochemical complexity of the upper half of the dimeric myrmicarin 430A has been achieved for the first time. Although the dienamine building blocks readily afforded the monomeric natural products under presumed biological conditions, the results of synthetic and theoretical experiments suggest that their dimers are either non-biomimetic or that enzymes are required in the biosynthesis of the higher-order myrmicarins. 5 - Studies on The Mechanism of the Knorr Pyrrole Cyclization - A mechanistic study of the Knorr pyrrole cyclization of an indolizidine-based dienamine to myrmicarin 215B was completed. This cyclization was found to occur exclusively in polar protic solvents, and two solvent molecules were required in the rate-determining step. A revised mechanism for this cyclization is proposed, in which a slow ketone protonation step precedes the cyclization and dehydration steps.
title: Zur Summierbarkeit von Faber-Reihen
Creators: name: Tietz, Horst
Publisher: name: Goltze
Year: 1993
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Abhandlungen der BWG
subject: 510

description: Potenzreihen sind das natürliche Hilfsmittel, um Funktionen darzustellen, die in Kreisen holomorph sind. Die Aufgabe, für ein allgemeines einfach zusammenhängendes Gebiet G eine Polynomfolge zu konstruieren, die für jede in G holomorphe Funktion eine Reihenentwicklung nach diesen Polynomen gestattet, wurde von G. FABER in seiner klassischen Arbeit mit der Einschränkung gelöst, daß der Rand von G eine analytische Kurve ist.
Hieran schloß und schließt sich eine lange Kette von Untersuchungen an, die sich mit Erweiterungen und Anwendungen des Faberschen Ergebnisses nach verschiedenen Richtungen befassen, wobei die Fabertheorie vornehmlich auf die Theorie der schlichten Funktionen, beginnend mit der berühmten Arbeit, bis heute eine stimulierende Kraft ausübt.
Eines der nächstliegenden Probleme betrifft die Möglichkeit, allgemeinere als analytische Ränder zuzulassen, wobei man dann die Güte der Konvergenz abschwächen muß. In dieser Hinsicht hatte Paul HEUSER festgestellt: im Falle eines konvexen Jordanrandes besitzt eine in G stetige und in G holomorphe Funktion eine Faberreihe und wird durch diese im Sinne abelscher Summierbarkeit dargestellt.
Die vorliegende Note soll diese Resultate korrekt und in verständlicher Form herleiten; das ist
- wünschenswert, weil selbst ein so taktvoller Rezensent wie G. SZEGÖ schreibt: "Various details of the paper remain unclear to the reviewer" , und
- möglich, weil der Kalkül der Laurent-Trennung, den Verf. als angemessene Struktur für die Faber-Theorie nachgewiesen hat, auch diese Arbeiten von P. Heuser durchsichtig zu machen vermag.
Buddleja davidii Franch.
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
Magnoliopsida
Lamiales
Scrophulariaceae
Buddleja
Buddleja davidii

description: * Buddleja davidii Franch.  —
Habit: Shrub.
Habitat: LMDF. Distribution: IV.
Voucher: N/A.
Reference: Fries & Fries (1924).
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 81, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
On the algebra A_{\hbar,η}(osp(2|2)^{(2)}) and free boson representations
Creators: name: MacKay, N
name: Zhao, L
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: A two-parameter quantum deformation of the affine Lie super algebra $osp(2|2)^{(2)}$ is introduced and studied in some detail. This algebra is the first example associated with nonsimply-laced and twisted root systems of a quantum current algebra with the structure of a so-called infinite Hopf family of (super)algebras. A representation of this algebra at $c=1$ is realized in the product Fock space of two commuting sets of Heisenberg algebras.
description: 14 pages, LaTeX
Stories from the Ashes: Exploring young rural adults' psychosocial recovery beyond the 2009 Gippsland bushfires
Creators: name: ROUVE JAN FORBES
Publisher: name: Monash University
Year: 2019
Subjects: subject: 111708 Health and Community Services
subject: FOS: Health sciences
subject: 111714 Mental Health
subject: Environmental Humanities
subject: 160508 Health Policy
subject: FOS: Political science

description: This thesis explores young rural adults’ psychosocial recovery beyond the 2009 Gippsland bushfires and addresses the paucity of research on young adults’ recovery from this disaster. Because of climate change, scientists predict such events are likely to increase in frequency and severity. Climate change has the potential to profoundly affect the Gippsland region’s social, environmental, economic, and health outcomes, and recovery needs into the future.
Strategy Instruction in Early Childhood Math Software: Detecting and Teaching Single-digit Addition Strategies
Creators: Carpenter, Kara Kilmartin
Publisher: name: Columbia University
Year: 2013
Subjects: Cognitive psychology
Educational technology
Mathematics--Study and teaching

description: In early childhood mathematics, strategy-use is an important indicator of children's conceptual understanding and is a strong predictor of later math performance. Strategy instruction is common in many national curricula, yet is virtually absent from most math software. The current study describes the design of one software activity teaching single-digit addition strategies. The study explores the effectiveness of the software in detecting the strategies first-graders use and teaching them to use more efficient strategies. Instead of a business-as-usual control group, the study explores the effects of one aspect of the software: the pedagogical agent, investigating whether multiple agents are more effective than a single agent when teaching about multiple strategies. The study finds that while children do not accurately report their own strategies, the software log is able to detect the strategies that children use and is particularly adept at detecting the effective use of an advanced strategy with a model that performs 67% better than chance. Overall, children improve in their accuracy, speed, and use of advanced strategies. Of the three teaching tools available to the children, the count on tool was most effective in encouraging use of an advanced strategy, highlighting a need to revise the other tools. Low-performers correctly used advanced strategies more frequently across the six sessions, while mid-performers improved after just one session and high-performers' correct use of an advanced strategy was consistent across the sessions. Whether a student saw lessons featuring a single agent or multiple agents did not have strong effects on performance. More research is needed to improve the strategy detection models, refine the tools and lessons, and explore other features of the software.
title: Error Estimation for the Clenshaw-Curtis Quadrature Method
Creators: name: Braß, Helmut
Publisher: name: Goltze
Year: 1993
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Abhandlungen der BWG
subject: 510

description: Dedicated to the Memory of Professor Dr. Stefan Schottlaender
Buddleja polystachya Fresen.
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
Magnoliopsida
Lamiales
Scrophulariaceae
Buddleja
Buddleja polystachya

description: Buddleja polystachya Fresen.  —
Habit: Shrub.
Habitat: LMWF, LMDF; up to 2 700 m. Distribution: I.
 Voucher: Near Ontulili Forest Station, Alt. 2 198 m, 5 Aug. 2015, SAJIT 003123 (HIB).
References: Fries & Fries (1924), Bruce & Lewis (1960), Bussmann (1993, 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 81, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464