cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Stable ring vortex solitons in Bessel optical lattices
Creators: name: Kartashov, Yaroslav V.
name: Vysloukh, Victor A.
name: Torner, Lluis
Publisher: name: arXiv
Year: 2004
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Stable ring vortex solitons, featuring a bright-shape, appear to be very rare in nature. However, here we show that they exist and can be made dynamically stable in defocusing cubic nonlinear media with an imprinted Bessel optical lattice. We find the families of vortex lattice solitons and reveal their salient properties, including the conditions required for their stability. We show that the higher the soliton topological charge, the deeper the lattice modulation necessary for stabilization.
description: 14 pages, 4 figures, submitted to Physical Review Letters
The Forum of the Patos Lagoon : subtitle an analysis of co-management arrangement for conservation of coastal resources in southern Brazil
Creators: name: Kalikoski, Daniela C.
Publisher: name: University of British Columbia
Year: 2009

description: Fisheries are often referred to as a common pool resource (CPR) in which exclusion is difficult and resource use involves subtractability. In the estuary of the Patos Lagoon, Southern Brazil, artisanal fisheries management has faced a crisis which brought forth a co-management regime, represented by a Forum, to manage fisheries CPRs. The objectives of the thesis were to analyse the implementation of the Forum arrangement and to recommend ways to strengthen the comanagement process. The analysis centred on the evaluation of the process of decision making for joint use; the role of science and local knowledge in institutional learning; and the congruence between environmental institutions and the conservation of fisheries CPRs. Methods of investigation involved literature review, document analysis, open-ended interviews, closed-ended survey, and participation at the Forum meetings. The Forum represents a move towards a sharing of responsibility and authority on local fisheries management supported by government decentralisation policy. Different stakeholders are now locally involved in the governance of artisanal fisheries in the region. However, the devolution of power to fisher communities is still hampered by the weak involvement of fishers in the Forum and by external influences at government levels. The creation of the Forum has attempted to minimise the problem of fit between institutions and resource conditions. Mismatches still persist, particularly in the definition of access boundaries to resource use, in the design of harvest practices adapted to environmental characteristics, and in the lack of a broader systemic approach to fisheries management. In this context, this study proposes a larger role for fishers knowledge in the comanagement regime, given its potential contribution to the design of sustainable fishing practices for the region. Accomplishments were observed. The Forum has had important outcomes and gained legitimacy. Small-scale fisheries management has become a more transparent process in which management rights have become explicit and openly discussed. The Forum represents a transition in resource management paradigms towards one that is more participatory, in tune with the functions of ecosystems and based on social mechanisms that facilitate the exchange of knowledge and information necessary to build a resilient socialecological system.
Towards a classification of rank $r$ $\mathcal{N}=2$ SCFTs Part II: special Kahler stratification of the Coulomb branch
Creators: name: Argyres, Philip C.
name: Martone, Mario
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the stratification of the singular locus of four dimensional $\mathcal{N}=2$ Coulomb branches. We present a set of self-consistency conditions on this stratification which can be used to extend the classification of scale-invariant rank 1 Coulomb branch geometries to two complex dimensions, and beyond. The calculational simplicity of the arguments presented here stems from the fact that the main ingredients needed -- the rank 1 deformation patterns and the pattern of inclusions of rank 2 strata -- are discrete topological data which satisfy strong self-consistency conditions through their relationship to the central charges of the SCFT. This relationship of the stratification data to the central charges is used here, but is derived and explained in a companion paper by one of the authors. We illustrate the use of these conditions by re-analyzing many previously-known examples of rank 2 SCFTs, and also by finding examples of new theories. The power of these conditions stems from the fact that for Coulomb branch stratifications a conjecturally complete list of physically allowed "elementary slices" is known. By contrast, constraining the possible elementary slices of symplectic singularities relevant for Higgs branch stratifications remains an open problem.
description: 64 pages, 27 figures, submitted to JHEP
Changes in total and functional bacterial genera following biochar application to planted soil
Creators: name: Orr, Caroline Hayley
name: Nelson, Andrew
name: Lindsay, Sean
name: Clements, Elizabeth Anne
name: Russell, Joseph James
name: Ralebitso-Senior1, T Komang
Publisher: name: Biomolecular Research Reports
Year: 2021

description: Biochar has the recognized potential to sequester carbon, facilitate contaminant amelioration and enhance agricul-tural crop yield. Different types of biochar have different impacts on ecosystems, and those that are produced locally, relative to where they will be used, are considered more sustainable. It is important, therefore, to determine how the locally produced biochars affect total and functional microbial communities, especially in agronomic contexts. In this study we tested the hypotheses that biochar augmentation would: (1) increase plant yield; and (2) differentially affect total and functional microbial community composition and structure in bulk vs. rhizosphere (Trifolium pratense) soils. Triplicate randomised seedling cells of a 5% (w/w) mixture of sandy clay loam soil (26% clay, 21% silt and 53% sand), with/without locally-produced mixed broadleaf forestry biochar, and with/without 0.1 g clover seeds, were sampled destructively at 2-week intervals for 8 weeks post clover germination. Microbial DNA of bulk and T. pratense rhizos-phere soils were analysed with next-generation sequencing of the 16S rRNA gene. The results showed a statistically significant increase in plant biomass in response to biochar addition correlating to increased abundances of Armati-monadetes and Bacteroidetes specifically in the rhizosphere. Although no significant change in overall alpha diversity was observed, significant changes in abundance at the genus level were recorded particularly in the presence of biochar for a number of recognised nitrogen-fixing and plant growth-promoting bacteria, including those capable of indole acetic acid (IAA) production, plant disease suppression and degradation of toxic compounds. We conclude that although overall soil diversity may not be affected by biochar addition, key genera associated with soil health and nitrogen fixation, such as Pseudoxanthomonas, Variovorax, Pseudonocardia, Devosia, Lysobacter and Hydrogeno-phaga, increased and facilitated plant growth.
description: Biomolecular Research Reports, 2022
Nonlinear Vector Error Correction Models in Price Transmission Analysis: Threshold Models vs. Markov-Switching Models
Creators: name: Ihle, Rico
name: Von Cramon-Taubadel, Stephan
name: Ihle, Rico
name: Von Cramon-Taubadel, Stephan
Publisher: name: Unknown
Year: 2008
Subjects: subject: Demand and Price Analysis
subject: price transmission
subject: threshold vector error correction model
subject: Markov-switching vector error correction model

description: This work provides a comparison of methodologies for applied research in price transmission analysis. We compare two regime-dependent econometric models, namely the threshold vector error correction model and the Markov-switching vector error correction model. We first provide a conceptual comparison in which we find that the regime-switching mechanisms of the models differ fundamentally so that each model is suitable for a certain type of nonlinear price trans-mission. Furthermore, we conduct a Monte Carlo experiment in order to study the performance of each of the models’ estimation techniques for simulated data. Although each model possesses an immediate economic interpretation which well matches an aspect of the theory of price transmission, the simulation results indicate that the corresponding estimation techniques yield biased estimates of low precision.
EU-communication challenges 3 years prior to Hungary’s presidency
Creators: name: Somogyi, Andrea
name: Sipos, Gyula
name: Somogyi, Andrea
name: Sipos, Gyula
Publisher: name: Unknown
Year: 2008
Subjects: subject: Political Economy
subject: tasks
subject: roles
subject: concerns of citizens
subject: national responsibilities
subject: future prospects

description: What challenges will Hungary face when it assumes the presidency in early 2011? Close cooperation will be required of the Presidential Trio when identifying presidential priorities. To garner both social and political support it is vital that, during Hungary’s EU presidency, one be cognizant of Hungary’s current situation. It is important to recognize successes and failures and produce a new solution It will be the first time Hungary has assumed the presidency and it will entail a great challenge as the nation will be responsible for managing EU policies.
Manichäische Literaturdenkmäler in koptischer Übersetzung
Creators: name: Baumstark, Anton
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 30 Nr. 1 (1933): Oriens christianus, Band 30, Heft 1
Lattice distortion in TmCo$_2$: a poly- and single- crystal study
Creators: name: Šebesta, J.
name: Kriegner, D.
name: Prchal, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Within the RCo$_2$ family of compounds, a structural distortion linked with the onset of magnetic ordering around the critical temperature can be observed. One of the less explored RCo$_2$ compounds is TmCo$_2$ probably due to its low Curie temperature. Exceptionally this compound, given its position at the end of the ferrimagnetic series, shows discrepancies in the ordering of the Co sub-lattice because of a weak Weiss molecular field. In this paper we focus on the structural distortion in TmCo$_2$, which appears together with the magnetic ordering around the critical temperature of $T_{C}\sim3.6$~K. Poly-crystals as well as single-crystals of TmCo$_2$ were used in our experiments. For both kinds of samples we observed the same type of the rhombohedral distortion along the [111] direction from the cubic Fd$\bar{3}$m to R$\bar{3}$m space group. The relation between observed magnetic and structural properties in this compound is discussed.
Restoring the Final Frontier: Exosomal MicroRNA and Cutaneous Wound Repair
Creators: name: Dykes, Iain
name: Ross, Kehinde
Publisher: name: Biomolecular Research Reports
Year: 2021

description: Non-healing wounds present a major healthcare challenge associated with the ageing population, the rising incidence of diabetes and the obesity epidermic. Driven by the need to expand therapeutic options for the treatment of such wounds, a large body of evidence has emerged in recent years demonstrating that microRNAs (miRNAs) modulate various aspects of cutaneous wound healing through effects on diverse cell types, including keratinocytes, fibroblasts, endothelial cells and macrophages. However, clear translational pathways for non-invasive cutaneous delivery of miRNAs to facilitate wound repair have not yet been established. The recognition that miRNAs can be actively partitioned into extracellular vesicles (EVs)—exosomes, microvesicles and apoptotic bodies—has stimulated research into the regulation, function and translational exploitation of EV-derived miRNAs both as a novel mode of intercellular signalling and as a tool for miRNA transfer to cells for therapeutic purposes. In particular, because mesenchymal stem cells (MSCs) were found to support wound healing, there is much interest in the therapeutic potential of EVs, especially exosomes, derived from these cells. In this review, we survey some of the main mesenchymal stem cells (MSCs) for which exosomal miRNAs have been evaluated in the context of skin repair, including exosomes from adipose-derived MSCs, bone MSCs, amniotic MSCs and umbilical cord MSCs. Epithelial stem cell (EPSC)-derived exosomes are also considered, from keratinocytes and epidermal stem cells. The picture that emerges from studies on exosomes from various cell types reveal they share a limited set of exosomal miRNAs enhancing wound repair. We suggest a need for direct comparison of exosomal miRNA profiles from a range of MSCs and EPSCs. The ability of exogenous exosomal miRNAs to promote healing of chronic diabetic wounds also warrants further attention in order to more fully establish their therapeutic potential.
description: Biomolecular Research Reports, 2022
The Origins of the Substellar Companion to GQ Lup
Creators: name: Debes, J. H.
name: Sigurdsson, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The recently discovered substellar companion to GQ Lup possibly represents a direct test of current planet formation theories. We examine the possible formation scenarios for the companion to GQ Lup assuming it is a $\sim$2 M$_{Jup}$ object. We determine that GQ Lup B most likely was scattered into a large, eccentric orbit by an interaction with another planet in the inner system. If this is the case, several directly observable predictions can be made, including the presence of a more massive, secondary companion that could be detected through astrometry, radial velocity measurements, or scuplting in GQ Lup's circumstellar disk. This scenario requires a highly eccentric orbit for the companion already detected. These predictions can be tested within the next decade or so. Additionally, we look at scenarios of formation if the companion is a brown dwarf. One possible formation scenario may involve an interaction between a brown dwarf binary and GQ Lup. We look for evidence of any brown dwarfs that have been ejected from the GQ Lup system by searching the 2MASS all-sky survey.
description: 6 pages, submitted to A&A
Application of a multi-criteria decision making process to facilitate the Improvement of the Vásárhelyi Plan
Creators: name: Mozsgai, Katalin
name: Tombacz, Endre
name: Mozsgai, Katalin
name: Tombacz, Endre
Publisher: name: Unknown
Year: 2008
Subjects: subject: Resource /Energy Economics and Policy
subject: Community/Rural/Urban Development
subject: Improvement of the Vásárhelyi Plan
subject: sustainability
subject: multi-criteria decision-making process
subject: strategic environmental assessment

description: In recent years floods have caused enormous damage and to prevent this the Government has launched a comprehensive programme called the Improvement of the Vásárhelyi Plan (IVP). In step with the original plan, new objectives have emerged, contributing to a solution for the Tisza Region’s problems in water management and regional and rural development. In tandem with the planning stage, a strategic environmental assessment has also been conducted. The assessment’s objective was to develop a multi-criteria system to help choose from a variety of feasible development plans, the ultimate goal being sustainability associated with social, economic, and environmental objectives. In its related decree, the Government recognised the results of the applied multicriteria decision-making process.
Values, attitudes, and goals of future Hungarian food engineers
Creators: name: Hajdu, Istvanne
name: Lakner, Zoltan
name: Hajdu, Istvanne
name: Lakner, Zoltan
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Labor and Human Capital
subject: higher education policy
subject: human resource management
subject: food science education
subject: social psychology
subject: empirical research

description: Over the last few decades Hungarian higher education has been radically transformed, and this transformation was implemented to counter the backwardness that previously plagued the education system. Agricultural education in particular was part of this transformation process, which included the disciplines of food science and related technology. This attempt at transformation yielded only a partial success; student numbers shot up, but there was no subsequent general improvement in the efficiency of higher education. This article is based on two surveys carried out in 1997 and 2007. The students’ values can be characterised as pluralistic and heterogenous. Based on longitudinal research, a shift can be seen toward materialistic and hedonistic values. The motivation for choosing the Faculty of Food Science is varied in nature, mirroring the food industry’s often critical current situation. High schools’ professional orientation is weak. Although the Faculty’s Budapest location is attractive, in the long run this is not sufficient to replace carefully planned promotional work. By structural equation modelling a significant relationship can be proven between the students’ values, their types of knowledge, and their expectations for future types of work.
title: Amazon Effects in Canadian Online Retail Firm-Product-Level Data
Creators: name: Chernoff, Alex
Publisher: name: Bank of Canada
Year: 2019

description: I use firm-product-level data for Canadian online retailers to study how product scope (the average number of product categories per firm) evolved from 1999 to 2012. During this period, product scope dropped monotonically from 59 to 5 product categories.

description: J’exploite des données sur les produits vendus par les détaillants canadiens en ligne afin d’étudier comment la gamme de produits (le nombre moyen de catégories de produits offerts par entreprise) a évolué entre 1999 et 2012. Pendant cette période, la gamme a diminué de façon monotone, passant de 59 catégories à 5.
Relativistic Generalization of the Gamow Factor for Fermion Pair Production or Annihilation
Creators: name: Yoon, Jin-Hee
name: Wong, Cheuk-Yin
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the production or annihilation of a pair of fermions, the initial-state or final-state interactions often lead to significant effects on the reaction cross sections. For Coulomb-type interactions, the Gamow factor has been traditionally used to take into account these effects. However the Gamow factor needs to be modified when the magnitude of the coupling constant or the relative velocity of two particles increases. We obtain the relativistic generalization of the Gamow factor in terms of the overlap of the Feynman amplitude with the relativistic wave function of two fermions with an attractive Coulomb-type interaction. An explicit form of the corrective factor is presented for the spin-singlet S-wave state. While the corrective factor approaches the Gamow factor in the non-relativistic limit, we found that the Gamow factor significantly over-estimates the effects when the coupling constant or the velocity is large.
description: 16 pages, 4 figures in LaTex
Lepton flavour violating Higgs Boson decays, tau --> mu gamma and B(s) --> mu+mu- in the constrained MSSM+NR with large tan beta
Creators: name: Parry, J. K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Realistic predictions are made for the rates of lepton flavour violating Higgs boson decays, tau --> mu gamma, mu --> e gamma, Bs --> mu+mu-, Bs --> tau mu and tau --> 3mu, via a top-down analysis of the Minimal Supersymmetric Standard Model(MSSM) constrained by SU(5) unification with right-handed Neutrinos and large tan beta. The third family neutrino Yukawa coupling is chosen to be of order 1, in this way our model bares a significant resemblance to supersymmetric SO(10). In this framework the large PMNS mixings result in potentially large lepton flavour violation. Our analysis predicts tau --> mu gamma and mu --> e gamma rates in the region (10^{-8}-10^{-6}) and (10^{-15}-10^{-14}) respectively. We also show that the rates for lepton flavour violating Higgs decays can be as large as 10^{-7}. The non-decoupling nature of H --> tau mu is observed which leads to its decay rate becoming comparable to that for tau --> mu gamma for large values of m_0 and M_1/2. We also find that the present bound on Bs --> mu+mu- is an important constraint on the rate of lepton flavour violating Higgs decays. The recently measured Bs-Bsbar mixing parameter Delta Ms is also investigated.
description: 27 pages, 15 postscript figures, 1 table. Small changes made to the text and title. Updated references. Bs-Bsbar analysis also included
title: Trade Flows and Exchange Rates: Importers, Exporters and Products
Creators: name: Devereux, Michael
name: Dong, Wei
name: Tomlin, Ben
Publisher: name: Bank of Canada
Year: 2019

description: Using highly disaggregated transaction-level trade data, we document the importance of new firm level trade partner relationships and the addition of new products to existing relationships in driving long-run import flows.

description: À partir de données fortement désagrégées relatives aux transactions commerciales, nous rendons compte de l’importance de l’établissement de nouvelles relations entre les partenaires commerciaux à l’échelle des entreprises et de l’ajout de produits dans le cadre des relations existantes comme moteurs des flux d’importation à long terme.
Destruction of molecular hydrogen ice and Implications for 1I/2017 U1 (`Oumuamua)
Creators: name: Hoang, Thiem
name: Loeb, Abraham
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The first interstellar object observed in our solar system, 1I/2017 U1 (`Oumuamua), exhibited a number of peculiar properties, including extreme elongation and acceleration excess. Recently, \cite{Seligman:2020vb} proposed that the object was made out of molecular hydrogen (H$_{2}$) ice. The question is whether H$_2$ objects could survive their travel from the birth sites to the solar system. Here we study destruction processes of icy H$_2$ objects through their journey from giant molecular clouds (GMCs) to the interstellar medium (ISM) and the solar system, owing to interstellar radiation, gas and dust, and cosmic rays. We find that thermal sublimation due to heating by starlight can destroy `Oumuamua-size objects in less than 10 Myr. Thermal sublimation by collisional heating in GMCs could destroy H$_2$ objects of `Oumuamua-size before their escape into the ISM. Most importantly, the formation of icy grains rich in H$_2$ is unlikely to occur in dense environments because collisional heating raises the temperature of the icy grains, so that thermal sublimation rapidly destroys the H$_2$ mantle before grain growth.
description: 8 pages, 2 figures, accepted to ApJ Letters on July 31, 2020
Finite Quantum Gravity Amplitudes -- no strings attached
Creators: name: Draper, Tom
name: Knorr, Benjamin
name: Ripken, Chris
name: Saueressig, Frank
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the gravity-mediated scattering of scalar fields based on a parameterisation of the Lorentzian quantum effective action. We demonstrate that the interplay of infinite towers of spin zero and spin two poles at imaginary squared momentum leads to scattering amplitudes that are compatible with unitarity bounds, causal, and scale-free at trans-Planckian energy. Our construction avoids introducing non-localities or the massive higher-spin particles that are characteristic in string theory.
description: v2: various small improvements/clarifications, version accepted for publication
title: The Economics of Cryptocurrencies—Bitcoin and Beyond
Creators: name: Chiu, Jonathan
name: Koeppl, Thorsten
Publisher: name: Bank of Canada
Year: 2019

description: Since the creation of Bitcoin in 2009, over 2,000 cryptocurrencies have been issued. We evaluate how well a cryptocurrency functions as a payment system.

description: Depuis la création du Bitcoin en 2009, plus de 2 000 cryptomonnaies ont été émises. Dans la présente étude, nous évaluons le succès d’une cryptomonnaie comme système de paiement.
Segments in the market of Hungarian institutional catering
Creators: name: Lehota, Jozsef
name: Horvath, Agnes
name: Fodor, Monika
name: Lehota, Jozsef
name: Horvath, Agnes
name: Fodor, Monika
Publisher: name: Unknown
Year: 2008
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Food consumer behaviour
subject: out of home consumption
subject: institutional catering
subject: segmentation

description: In our paper we are aiming to present food preference as a way of consumption typical of the individuals and consequently, a way of eating characterising working days. To carry out a more detailed preference examination, factor analysis was carried out followed by cluster analysis based on the segmenting effect of food consumer preferences. The role and the main features of institutional catering were analysed in comparing the segments of the whole sample and research. We assume that the differences outlined on the level of food preferences are reflected in choosing the way and circumstances of eating thus influencing the choice between several alternatives typical of working days.
Study on interstitial microwave hyperthermia with multi-slot coaxial antenna
Creators: name: Gas, Piotr
Publisher: name: arXiv
Year: 2020
Subjects: subject: Medical Physics (physics.med-ph)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: This study focuses attention on interstitial microwave hyperthermia, which is a popular medical procedure for treatment of pathological human tissues containing tumors. In the paper, the 2D finite element analysis is used to compare the models of the coaxial antenna with one, two and three air slots. The implemented models are based on the wave equation in the TM mode coupled with the Pennes equation under a transient state condition. Moreover, the model takes into account the thermo-electrical properties of human tissue for the antenna operating frequency of 2.45 GHz. Simulation results for different tissues and various multi-slot antenna configurations have been presented. The comparative analysis for single-, double-and triple-slot coaxial antennas shown in this article does not have equivalents in the current literature in the field of hyperthermia.
Maximal superintegrability of Benenti systems
Creators: name: Blaszak, M.
name: Sergyeyev, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: For a class of Hamiltonian systems naturally arising in the modern theory of separation of variables, we establish their maximal superintegrability by explicitly constructing the additional integrals of motion.
description: 5 pages, LaTeX 2e, to appear in J. Phys. A: Math. Gen
Local Scale Invariant Kaluza-Klein Reduction
Creators: name: Ygael, Tomer
name: Davidson, Aharon
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We perform the 4-dimensional Kaluza-Klein (KK) reduction of the 5-dimensional locally scale invariant Weyl-Dirac gravity. While compactification unavoidably introduces an explicit length scale into the theory, it does it in such a way that the KK radius can be integrated out from the low energy regime, leaving the KK vacuum to still enjoy local scale invariance at the classical level. Imitating a $U(1)\times\tilde{U}(1)$ gauge theory, the emerging 4D theory is characterized by a kinetic Maxwell-Weyl mixing whose diagonalization procedure is carried out in detail. In particular, we identify the unique linear combination which defines the 4D Weyl vector, and fully classify the 4D scalar sector. The later consists of (using Weyl language) a co-scalar and two in-scalars. The analysis is performed for a general KK $m$-ansatz, parametrized by the power $m$ of the scalar field which factorizes the 4D metric. The no-ghost requirement, for example, is met provided $-\frac{1}{2}\leq m \leq 0$. An $m$-dependent dictionary is then established between the original 5D Brans-Dicke parameter $ω_5$ and the resulting 4D $ω_4$. The critical $ω_5=-\frac{4}{3}$ is consistently mapped into critical $ω_4 = -\frac{3}{2}$. The KK reduced Maxwell-Weyl kinetic mixing cannot be scaled away as it is mediated by a 4D in-scalar (residing within the 5D Weyl vector). The mixing is explicitly demonstrated within the Einstein frame for the special physically motivated choice of $m=-\frac{1}{3}$. For instance, a super critical Brans-Dicke parameter induces a tiny positive contribution to the original (if introduced via the 5-dimensional scalar potential) cosmological constant. Finally, some no-scale quantum cosmological aspects are studied at the universal mini-superspace level.
description: 11 pages, 4 figures
WASTE FROM CERAMIC BRICKS, AS A RAW MATERIAL FOR THE PRODUCTION OF RESTORATION MATERIALS
Creators: name: Шарофат Машарипова
Publisher: name: figshare
Year: 2020
Subjects: subject: 91201 Ceramics
subject: FOS: Materials engineering
subject: 90503 Construction Materials
subject: FOS: Civil engineering

description: This article is devoted to the study of the properties of waste ceramic bricks as technogenic mineral raw materials for reuse in the production of wall materials.The article describes how the production of ceramic bricks allows you to destroy industrial waste in large quantities and using traditional technologies and equipment. The works prove the possibility of using various man-made materials in the production of ceramic bricks as an additive, and in some compositions as the main raw material, replacing partially or completely non-renewable resources of clay rocks. The large volume of production of ceramic bricks allows you to dispose of industrial waste in significant quantities and a wide range of their composition using traditional technology and hardware. The obtained results indicate the possibility of using brick fighting in the current technology of ceramic bricks of the M125, M 150 brand with a content of up to 30 wt of brick powder in a two-component charge. % at a firing temperature of up to 950 °C, which meets regulatory requirements.Thus, as a result of the experiment, the possibility of using the waste of ceramic bricks as a desiccant was established. This technogenic raw material is recommended after appropriate grinding.
title: Frictional Capital Reallocation I: Ex Ante Heterogeneity
Creators: name: Wright, Randall
name: Xiao,  Sylvia Xiaolin
name: Zhu, Yu
Publisher: name: Bank of Canada
Year: 2019

description: This paper studies dynamic general equilibrium models where firms trade capital in frictional markets. Gains from trade arise due to ex ante heterogeneity: some firms are better at investment, so they build capital in the primary market; others acquire it in the secondary market.

description: Dans cette étude, nous analysons des modèles dynamiques d’équilibre général où les entreprises font des opérations en capital sur des marchés soumis à des frictions. Les gains liés à ces opérations tiennent à l’hétérogénéité ex ante : certaines entreprises ont de meilleures stratégies d’investissement et accumulent des capitaux sur le marché primaire, tandis que d’autres le font sur le marché secondaire.
Book Review
Creators: name: Gorton, Matthew
name: Gorton, Matthew
Publisher: name: Unknown
Year: 2008

description: Book Review of: Csáki, Cs.; Forgács, Cs.; Milczarek-Adrewjewska, D. and Wilkin, J. (eds.): Restructuring market relations in food and agriculture in Central and Eastern Europe: Impacts upon small farmers
description: Book Review
A non-Abelian fractional quantum Hall state at $3/7$ filled Landau level
Creators: name: Faugno, W. N.
name: Jain, J. K.
name: Balram, Ajit C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We consider a non-Abelian candidate state at filling factor $ν=3/7$ state belonging to the parton family. We find that, in the second Landau level of GaAs (i.e. at filling factor $ν=2+3/7$), this state is energetically superior to the standard Jain composite-fermion state and also provides a very good representation of the ground state found in exact diagonalization studies of finite systems. This leads us to predict that \emph{if} a fractional quantum Hall effect is observed at $ν=3/7$ in the second Landau level, it is likely to be described by this new non-Abelian state. We enumerate experimentally measurable properties that can verify the topological structure of this state.
A BEHAVIORAL APPROACH TOWARDS FUTURES CONTRACT USAGE.
Creators: name: Pennings, Joost M.E.
name: Leuthold, Raymond M.
name: Pennings, Joost M.E.
name: Leuthold, Raymond M.
Publisher: name: Unknown
Year: 2001
Subjects: subject: Institutional and Behavioral Economics
subject: hedging
subject: futures
subject: structural equation modeling
subject: behavioral models
subject: futures exchanges
subject: choice models
subject: farmers

description: We propose a behavioral decision-making model to investigate what factors, observable as well as unobservable, owner-managers consider regarding futures contract usage. The conceptual model consists of two phases, reflecting the two-stage decision structure of manager’s use of futures. In the first phase owner-managers consider whether futures are within the market choice set for the enterprise. In the second phase the owner-manager decides whether or not to initiate a futures position when confronted with a concrete choice situation. In both phases owner-manager’s beliefs and perceptions play an important role. The proposed model is tested on a data set of Dutch farmers, based on computer-assisted personal interviews. Because we incorporate latent variables (e.g., perceptions and beliefs) in both phases, we propose an estimation procedure that takes the measurement error of these latent variables explicitly into account. The implications of the behavioral decision-making model for futures contract design are derived.
RANGE AND NUMBER-OF-LEVELS EFFECTS IN DERIVED AND STATED MEASURES OF ATTRIBUTE IMPORTANCE
Creators: name: Verlegh, Peeter W.J.
name: Schifferstein, Hendrik N.J.
name: Wittink, Dick R.
name: Verlegh, Peeter W.J.
name: Schifferstein, Hendrik N.J.
name: Wittink, Dick R.
Publisher: name: Unknown
Year: 2001
Subjects: subject: Research Methods/ Statistical Methods
subject: attribute importance
subject: context effects
subject: conjoint analysis

description: We study how the range of variation and the number of attribute levels affect five measures of attribute importance: full profile conjoint estimates, ranges in attribute level attractiveness ratings, regression coefficients, graded paired comparisons, and self-reported ratings. We find that all importance measures are affected by the range manipulation. The number of attribute levels affects only two measures. The results allow us to benchmark the magnitude of the number-of-levels effect against the range effect: conjoint importance estimates were approximately equally affected by a threefold increase in the range of attribute variation and by the insertion of two intermediate attribute levels. Our findings show that the number-of-levels effect is most likely due to respondents’ tendencies to distribute their mental stimulus representations and their responses uniformly over the corresponding continua.
Analysis of the telomere length of subpopulations of primary human hematopoietic cells
Creators: name: Van Ziffle, Jessica
Publisher: name: University of British Columbia
Year: 2009

description: Telomeres are structures at the ends of eukaryotic chromosomes; they protect the ends from degradation and end-to-end fusions. Mammalian telomeres consist of a tandem array of G-rich repeats, with a length of two to 12 kb in human somatic cells. Somatic cell telomere length shortens with each cell division, leading to senescence or apoptosis. Critically short telomeres can lead to genomic instability, thus in cells that divide continually, such as germ cells, telomere length is maintained by telomerase. In a rare autosomal dominant form of dyskeratosis congenita, patients carry a mutation in the RNA template of telomerase, resulting in half maximal telomerase activity. Patients with this genotype die of aplastic anemia, indicating that maintenance of telomere length is likely critical, and may be particularly important in hematopoietic stem cells. Telomere length can be measured by a quantitative fluorescence in situ hybridisation and flow cytometry based method (Flow- FISH). In the present study, this technique was used to measure telomere length in lymphocytes and in "candidate" stem cell populations isolated from eight cadaveric marrow samples from normal adults (aged 14 to 48 years). Telomere length analysis of B and T cells - two populations that undergo activation-induced telomerase up-regulation - revealed that CD20⁺ B cells in the bone marrow had longer telomeres than CD3⁺ T cells (p<0.002). The CD34⁺CD38⁻ populations from each of the eight donors also had longer telomeres than the T cell subsets. The telomerase activity in T lymphocyte populations thus appears insufficient to prevent telomere shortening during differentiation from the pluripotent stem cell. To compare telomere length in different subsets of primitive hematopoietic ceils, we analysed FACS-purified CD34⁺CD38⁻ and CD34⁺CD38⁺ populations. The CD34⁺CD38⁻ cells had significantly longer telomeres than the CD34⁺CD38⁺ cells (p<0.02, n=8). The Side Population (SP) cells identified by FACS as Hoechst 33342'° cells did not have significantly longer telomeres than the CD34⁺CD38⁻ population. In two donor samples, additional populations were sorted, and the data is consistent with the proposed hierarchical pattern of these cell populations, with CD34⁺CD38⁻ thought to have the greatest proliferative potential and the longest telomeres. This data supports the hypothesis that hematopoietic cells with the greatest proliferative potential will have the longest telomere length. It is still unclear if a hematopoietic cell population exists within the SP with "germ-line" or "fetal" length telomeres. While we cannot exclude that a small subset of more primitive cells capable of maintaining long telomere length exists within the sorted SP cells that were analysed, we conclude that telomere length declines in the majority of the primitive hematopoietic cells examined here.
Electric dipole moments of charged leptons in the split fermion scenario in the two Higgs doublet model
Creators: name: Iltan, E. O.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We predict the charged lepton electric dipole moments in the split fermion scenario in the framework of the two Higgs doublet model. We observe that the numerical value of the muon (tau) electric dipole moment is at the order of the magnitude of $10^{-22} (e-cm)$ ($10^{-20} (e-cm)$) and there is an enhancement in the case of two extra dimensions, especially for the tau lepton electric dipole moment.
description: 17 pages, 5 figures
title: The BoC-BoE Sovereign Default Database: What’s New in 2019?
Creators: name: Beers, David
name: de Leon-Manlagnit, Patrisha
Publisher: name: Bank of Canada
Year: 2019

description: Until recently, few efforts have been made to systematically measure and aggregate the nominal value of the different types of sovereign government debt in default. To help fill this gap, the Bank of Canada (BoC) developed a comprehensive database of sovereign defaults that is posted on its website and updated in partnership with the Bank of England (BoE).

description: Jusqu’à tout récemment, peu d’efforts étaient consacrés à l’évaluation systématique des différents types de défauts souverains ainsi qu’au calcul de la valeur nominale globale des engagements qu’ils représentent. Afin de remédier à cette lacune, la Banque du Canada a développé une base de données exhaustive de défauts souverains, qui se trouve sur son site Web et qui est mise à jour en partenariat avec la Banque d’Angleterre.
Energy Consumption and Economic Growth: Evidence from COMESA Countries
Creators: name: Chali, Nondo
name: Mulugeta, Kahsai
name: Chali, Nondo
name: Mulugeta, Kahsai
Publisher: name: Unknown
Year: 2009
Subjects: subject: International Development
subject: Resource /Energy Economics and Policy
subject: Energy consumption
subject: GDP
subject: Panel Causality tests

description: This study applies panel data techniques to investigate the long-run relationship between energy consumption and GDP for a panel of 19 African countries (COMESA) based on annual data for the period 1980-2005. In the first step, we examine the degree of integration between GDP and energy consumption by employing three panel unit root tests and find that the variables are integrated of order one. In the second step, we investigate the long-run relationship between energy consumption and GDP. Results overwhelming show that GDP and energy consumption move together in the long-run. In the third step, we estimate the long-run relationship and test for causality using panel-based error correction models. The results indicate that long-run and short-run causality is unidirectional, running from energy consumption to GDP.
Atsigryllus sikuani Cadena-Castañeda & Orejuela 2020, n. sp.
Creators: name: Cadena-Castañeda, Oscar J.
name: Orejuela, Mery Helen Tíjaro
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Gryllidae
Atsigryllus
Atsigryllus sikuani

description: Atsigryllus sikuani n. sp.
Map 1, Figs. 3-4
http://lsid.speciesfile.org/urn:lsid: Orthoptera.speciesfile.org:TaxonName:509814
 Holotype. ♂. Colombia, Meta, Villavicencio, Vda. La Argentina. 650 m. 4.231936, -73.643457. J. Marquez (CAUD).
 Description. In addition to characters to the genus: Male. Size small (Figs. 3A, B). Coloration. Predominantly dark brown and black, cephalic capsule, pronotum and first pair of black legs, scapus and yellow pedicel in the same way as the apex of the last segment of the maxillary palp and ocelli. Dark brown body rest, hind femur with black transverse stripes, which go from the dorsal to the ventral margin of the external face of the femur (Figs. 3A, B). Tarsomeres of hind leg with 8 outer and 6 inner dorsal spines. Male genitalia. Pseudepiphallic parameres triangular shaped in ventral and dorsal view (Figs. 4A, B), wide, truncate at the apex and curved in lateral view (Figs. 4C). Pseudepiphallic apodemes slim and not connected with the rami. Median lophi very reduced and triangular, lateral lobe arched and with a fold in the internal margin, towards the back (Fig. 4A). Endophallic cavity well developed kidney shaped in side view (Fig. 4B).
 Female. Unknown.
 Measurements (in mm.). Holotype: LB: 10.5. Pr: 1.5. HF: 6. HT: 3.8.
 Etymology. In honor of the indigenous Sikuani or Guahibo people, who live in the Orinoco plains, between the rivers Guaviare, Meta and Arauca, in the Colombian departments of Vichada, Meta, Arauca, Guaviare and Guainía, and Venezuela to the west of the states of Amazonas, Bolívar and south of Apure.
description: Published as part of Cadena-Castañeda, Oscar J. & Orejuela, Mery Helen Tíjaro, 2020, Studies in Colombian Ensifera and adjacent countries: New taxa of smallest field crickets (Orthoptera: Gryllidae: Gryllinae), pp. 571-581 in Zootaxa 4809 (3) on page 577, DOI: 10.11646/zootaxa.4809.3.10, http://zenodo.org/record/3936758
title: What Does Structural Analysis of the External Finance Premium Say About Financial Frictions?
Creators: name: Zivanovic, Jelena
Publisher: name: Bank of Canada
Year: 2019

description: I use a structural vector autoregression (SVAR) with sign restrictions to provide conditional evidence on the behavior of the US external finance premium (EFP). The results indicate that the excess bond premium, a proxy for the EFP, reacts countercyclically to supply and monetary policy shocks and procyclically to demand shocks.

description: Je me sers d’un modèle vectoriel autorégressif structurel avec restrictions de signe dans le but de fournir des indications conditionnelles sur la dynamique de la prime de financement externe aux États-Unis. Les résultats montrent que la prime excédentaire sur les obligations, qui donne une approximation de la prime de financement externe, réagit de façon contracyclique aux chocs d’offre et de politique monétaire, et de façon procyclique aux chocs de demande.
Dynamics of a quantum measurement
Creators: name: Allahverdyan, Armen E.
name: Balian, Roger
name: Nieuwenhuizen, Theo M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We work out an exactly solvable hamiltonian model which retains all the features of realistic quantum measurements. In order to use an interaction process involving a system and an apparatus as a measurement, it is necessary that the apparatus is macroscopic. This implies to treat it with quantum statistical mechanics. The relevant time scales of the process are exhibited. It begins with a very rapid disappearance of the off-diagonal blocks of the overall density matrix of the tested system and the apparatus. Possible recurrences are hindered by the large size of the latter. On a much larger time scale the apparatus registers the outcome: Correlations are established between the final values of the pointer and the initial diagonal blocks of the density matrix of the tested system. We thus derive Born's rule and von Neumann's reduction of the state from the dynamical process.
description: 18 pages, no figures; conference talk of R. Balian
Distortions to Agricultural Incentives in Ghana
Creators: name: Brooks, Jonathan
name: Croppenstedt, Andre
name: Aggrey-Fynn, Emmanuel
name: Brooks, Jonathan
name: Croppenstedt, Andre
name: Aggrey-Fynn, Emmanuel
Publisher: name: Unknown
Year: 2007
Subjects: subject: Agricultural and Food Policy
subject: International Relations/Trade
subject: Distorted incentives
subject: agricultural and trade policy reforms
subject: national agricultural development

description: -
Potential symmetry and invariant solutions of Fokker-Planck equation in cylindrical coordinates related to magnetic field diffusion in magnetohydrodynamics including the Hall current
Creators: name: Khater, A. H.
name: Callebaut, D. K.
name: Abdul-Aziz, S. F.
name: Abdelhameed, T. N.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Lie groups involving potential symmetries are applied in connection with the system of magnetohydrodynamic equations for incompressible matter with Ohm's law for finite resistivity and Hall current in cylindrical geometry. Some simplifications allow to obtain a Fokker-Planck type equation. Invariant solutions are obtained involving the effects of time-dependent flow and the Hall-current. Some interesting side results of this approach are new exact solutions that do not seem to have been reported in the literature.
description: 14 pages, 9 figures