cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Verifying Cryptographic Security Implementations in C Using Automated Model Extraction
Creators: name: Aizatulin, Mihail
Publisher: name: The Open University
Year: 2015

description: This thesis presents an automated method for verifying security properties of protocol implementations written in the C language. We assume that each successful run of a protocol follows the same path through the C code, justified by the fact that typical security protocols have linear structure. We then perform symbolic execution of that path to extract a model expressed in a process calculus similar to the one used by the CryptoVerif tool. The symbolic execution uses a novel algorithm that allows symbolic variables to represent bitstrings of potentially unknown length to model incoming protocol messages. The extracted models do not use pointer-addressed memory, but they may still contain low-level details concerning message formats. In the next step we replace the message formatting expressions by abstract tupling and projection operators. The properties of these operators, such as the projection operation being the inverse of the tupling operation, are typically only satisfied with respect to inputs of correct types. Therefore we typecheck the model to ensure that all type-safety constraints are satisfied. The resulting model can then be verified with CryptoVerif to obtain a computational security result directly, or with ProVerif, to obtain a computational security result by invoking a computational soundness theorem. In order to formalise the security properties of C programs and to prove the correctness of our approach we describe an embedding of C programs into the process calculus, such that C protocol participants can be executed as part of a larger system, described by the process calculus, that represents the environment and the attacker. We develop a security-preserving simulation relation that is preserved by embedding, and show that each step of our model transformation simulates the previous step, thus proving the overall soundness of the approach. Currently we only consider trace properties. Our method achieves high automation and does not require user input beyond what is necessary to specify the properties of the cryptographic primitives and the desired security goals. We evaluated the method on several protocol implementations, totalling over 3000 lines of code. The biggest case study was a 1000-line implementation that was independently written without verification in mind. We found several flaws that were acknowledged and fixed by the authors, and were able to verify the fixed code without any further modifications to it.
FINANSOWANIE INWESTYCJI PROEKOLOGICZNYCH PRZEZ BANK OCHRONY ŚRODOWISKA S.A. WE WSPÓŁPRACY Z WOJEWÓDZKIMI ORAZ NARODOWYM FUNDUSZEM OCHRONY ŚRODOWISKA I GOSPODARKI WODNEJ W LATACH 1991-2013
Creators: name: Rutkiewicz, Krzysztof
name: Haniszewska, Cecylia
name: Rutkiewicz, Krzysztof
name: Haniszewska, Cecylia
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: Environmental Economics and Policy
subject: Resource /Energy Economics and Policy
subject: ecological investments
subject: financing of environmental protection
subject: renewable energy

description: The aim of the study is to evaluate the financing of environmental investments in Poland credited by the Bank of Environmental Protection (BOŚ) in the years 1991-2013. Authors conducted a research relating to the total amount, structure and distribution of resources granted by BOŚ. They indicated directions of financial measures allocation i.e. tasks, projects and achieved ecological effects in the field of environmental protection. A method of deduction was used. Information taken from the theoretical literature as well as legal and normative acts. Empirical data for comparative statistical analysis derived from documents and reports of the BOŚ Department of Ecology and Strategy. In the structure of loans granted by BOŚ in the years 1991-2013, 87% of the investments concerned the protection of the atmosphere, 10% – water conservation and water management, 2.5% – protection of the earth. Most often were used loans with subsidies (in cooperation with National Fund for Environmental Protection & Water Management – 26%), credit lines (23%) or the National Fund payments (21%). In terms of value (16 bln PLN – 40% of measures) dominated commercial investment loans. BOŚ activity in the field of renewable energy sources (RES) relates mainly to loans for the purchase and installation of solar collectors (81% of the contracts, of which 80% were signed in 2011-2013). The largest investments were wind turbines (1.4 bln PLN). Since 1991, 46% of energy from RES obtained in the years 2012-2013. Ecological effects of completed projects include reduction in pollutants’ emission: CO2 – 2.4 mill tons, SO2 – 0.5 mill ton, dust – 139 thous. tons, NOx – 44.5 thous. tons. Financial measures from BOŚ enabled to build wastewater treatment plants (with a capacity of 2.6 mill m3 /day) and sewage network (8.9 thous. km). Neutralized 6.9 mill tones of waste. In the structure of credit debt 31% is represented by RES, 9% refers to energy efficiency and 5% – modernization of technological processes
Scalar absorption cross section of rotating black holes with tidal charge
Creators: name: de Oliveira, E. S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The absorption cross section of rotating black holes in the Randall-Sundrum brane-world scenario for massless scalar waves is obtained via the partial-wave method. A variety of incidence directions with respect to the black hole rotation axis is considered. Special attention is given to near-extreme black holes, in which cases the absorption cross section increases as the tidal charge becomes more negative. It is shown that black holes with different configurations can present capture cross sections/shadows of same size. However, in such cases, the absorption spectra are different mainly for small frequencies. Numeric results are compared with the capture cross sections in the high-frequency limit, and with the black hole area in the low-frequency limit showing good agreement.
Modeling the Pion and Kaon Form Factors in the Timelike Region
Creators: name: Bruch, Christine
name: Khodjamirian, Alexander
name: Kuhn, Johann H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: New, accurate measurements of the pion and kaon electromagnetic form factors are expected in the near future from experiments at electron-positron colliders,using the radiative return method. We construct a model for the timelike pion electromagnetic form factor, that is valid also at momentum transfers far above the $ρ$ resonance. The ansatz is based on vector dominance and includes a pattern of radial excitations expected from dual resonance models.The form factor is fitted to the existing data in the timelike region, continued to the spacelike region and compared with the measurements there and with the QCD predictions. Furthermore, the model is extended to the kaon electromagnetic form factor. Using isospin and SU(3)-flavour symmetry relations we extract the isospin-one contribution and predict the kaon weak form factor accessible in semileptonic $τ$ decays.
description: 31 pages, 7 figures,latex, one reference changed, version to appear in Eur.Phys.J C
Physarum crateriforme Petch 1909
Creators: name: Kryvomaz, Tetiana
name: Michaud, Alain
name: Stephenson, Steven L.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Fungi
Mycetozoa
Myxomycetes
Physarales
Physaraceae
Physarum
Physarum crateriforme

description: Physarum crateriforme Petch (2 FC, 13 MC, 9 loc, 9 ps)
 Loc. 5 Mahé: On bark of living tree Tabebuia pallida, SLS 32364 (MC pH 6.4). On dry stems of living liana Thunbergia grandiflora, SLS 32363 (MC pH 6.8). Loc. 14b Praslin: On bark of living tree Syzygium jambos, SLS 32433 (MC pH 6.1). Loc. 17a Praslin: On dead spathe fixed to living palm Cocos nucifera, SLS (MC pH 7). Loc. 36 La Digue: On bark of living tree Calophyllum inophyllum & Terminalia catappa & Cordia subcordata, SLS 32370 (MC pH 6.8). Loc. 37c La Digue: On bark of living tree Calophyllum inophyllum, SLS 32319 (MC pH 7). Loc. 38b La Digue: On bark of living tree Artocarpus altilis, SLS (MC pH 5.7). On dry stems of living liana Ipomoea sp., SLS 32151 (MC pH 8.5). Loc. 43 La Digue: On wood and bark of large standing dead mossy tree Thespesia populnea, AM2938, TK2494 (2FC). Loc. 48 Curieuse: On bark of living tree Calophyllum inophyllum, SLS 32423 (MC pH 5.9). On bark of living tree Thespesia populnea, SLS 32141 (MC pH 6.9), SLS 32138 (MC pH 7.3), SLS 32142 (MC pH 7.2). Loc. 50 Félicité: On bark of living tree Cordia subcordata, SLS 32441 (MC pH 6.7).
description: Published as part of Kryvomaz, Tetiana, Michaud, Alain & Stephenson, Steven L., 2020, Myxomycete biodiversity on five islands of the Seychelles, pp. 201-244 in Zootaxa 4851 (2) on page 236, DOI: 10.11646/zootaxa.4851.2.1, http://zenodo.org/record/4407410
INSTRUMENTY POZATARYFOWE W HANDLU ROLNO-SPOŻYWCZYM WYBRANYCH KRAJÓW ROZWIJAJĄCYCH SIĘ
Creators: name: Sapa, Agnieszka
name: Sapa, Agnieszka
Publisher: name: Unknown
Year: 2015
Subjects: subject: International Relations/Trade
subject: Public Economics
subject: agri-food trade
subject: non-tariff instruments (NTMs)
subject: the developing countries

description: Under the conditions of steadily reducing tariffs on agri-food trade, the non-tariff measures (NTMs) can be used to protect national agricultural markets. Such measures are used by both developed countries and developing mainly in relation to agri-food international trade. The main objective of the research was to assess the quantitative use of non-tariff instruments in agri-food import of selected developing countries. The analysis confirmed that non-tariff measures are used in the agri-food imports by developing countries and that within broad group of NTMs the sanitary and phytosanitary measures and the technical barriers mainly applied.
UWARUNKOWANIA ZASOBOWE A DOCHODY INDYWIDUALNYCH GOSPODARSTW ROLNYCH W POLSCE W LATACH 2004-2012 (PRÓBA OCENY ZBIEŻNOŚCI NA PODSTAWIE DOŚWIADCZEŃ GOSPODARSTW FADN)
Creators: name: Smędzik-Ambroży, Katarzyna
name: Smędzik-Ambroży, Katarzyna
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agricultural and Food Policy
subject: Public Economics
subject: resource conditions
subject: income from agricultural production
subject: convergence

description: This article aims to define whether, after the Polish accession to the EU, occurred the tendency to equalize incomes FADN farms from areas with different or similar conditions resource for agricultural production in Poland. Therefore, made a grouping of regions (provinces) in Poland in areas with different resource conditions for agricultural production in the three basic factors of production, ie. land, capital, labor. It has been proved that the conditions for resource after Polish accession to the EU are still a key factor income situation of farms. After 2004 occurred equalization income of individual FADN farms from areas with similar conditions resource for agricultural production. In regions with different conditions occurred in 2010-2012 opposite trend.
Late States of Stellar Evolution
Creators: name: Marvel, Kevin
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Square Kilometer Array will have the sensitivity, spatial resolution, and frequency resolution to provide new scientific knowledge of evolved stars. Four basic areas of scientific exploration are enhanced by the construction of the SKA: 1) detection and imaging of photospheric radio continuum emission and position correlation with maser distributions, 2) imaging of thermal dust emission around evolved stars and the detailed structures of their circumstellar winds (again, including comparison with maser distributions), 3) study of cm-wavelength molecular line transitions and the circumstellar chemistry around both O-rich and C-rich evolved stars and 4) the possible observation of polarized emission due to the influence of the magnetic fields of AGB stars. Since this short chapter is not meant to be a review article, a comprehensive reference list has not been generated. I have selected just one or perhaps two references for citations where appropriate.
description: to appear in "Science with the Square Kilometer Array," eds. C. Carilli and S. Rawlings, New Astronomy Reviews (Elsevier: Amsterdam)
Molecular picture for $X_{0}(2900)$ and $X_1(2900)$
Creators: name: He, Jun
name: Chen, Dian-Yong
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Inspired by the newly observed $X_{0}(2900)$ and $X_1(2900)$ at LHCb, the $K^*\bar{D}^*$ and $K\bar{D}_1$ interactions are studied in the quasipotential Bethe-Salpeter equation approach combined with the one-boson-exchange model. The bound and virtual states from the interactions are searched for as the poles in the complex energy plane of scattering amplitude. A bound state with $I(J^P)=0(0^+)$ and a virtual state with $0(1^-)$ are produced from the $K^*\bar{D}^*$ interaction and $K\bar{D}_1$ interaction, and can be related to the $X_{0}(2900)$ and $X_1(2900)$ observed at LHCb, respectively. A bound state with $I(J^P)=0(1^+)$ and a virtual state with $I(J^P)=0(2^+)$ are also predicted from the $K^*\bar{D}^*$ interaction with a small $α$ value, which can be searched in future experiments.
description: 5 pages, 2 figures; more discussions added; typos corrected
Increased vascular contractility in isolated vessels from cigarette smoking rats is mediated by basal endothelin release
Creators: name: Rahman, Mohammad Mahmudur
Publisher: name: University of British Columbia
Year: 2010

description: The effect of chronic cigarette smoking on endothelin modulation of vascular contraction and CYP enzyme levels was studied in 20 male Sprague-Dawley rats. The animals were divided equally into smoking and non-smoking groups. The smoking group was exposed to 6 research cigarettes per rat per day 5 days a week for 16 weeks. The control group was sham smoked. Functional contractile studies were performed in aortas and carotid arteries to determine the regulation of vascular tone by basal release of endothelin. Liver samples were analyzed for CYPIAI and CYPIA2 gene expression by RT-PCR. Plasma samples were assessed for endothelin-l (ET-l) level by enzyme immunoassay (EIA). Treatment of aortas and carotid arteries with bosentan, the dual endothelin receptor antagonist, caused a significant reduction in constrictor responses of smoking rats, indicating increased regulation of tone by endothelin in smoker rats as compared to controls. There was also a greater expression of the cytochrome P450-liver enzymes (CYPIAI and CYPIA2) in smoker rats. Body weight gain was also significantly decreased in smoker rats. We conclude that increased endothelin release in smoker rats contributes significantly to increased arterial tone and may therefore contribute to the cardiovascular pathophysiology associated with cigarette smoking, such as increased vascular muscularization, increased contraction, decreased dilation and possibly vasospasm.
title: Making digital history: The impact of digitality on public participation and scholarly practices in historical research
Creators: name: Ridge, Mia
Publisher: name: The Open University
Year: 2016

description: This thesis investigates tow key questions: firstly, how do two broad groups - academic, family and local historians, and the public - evaluate, use, and contribute to digital history resources? And consequently, what impact have digital technologies had on public participation and scholarly practices in historical research? Analysing the impact of design on participant experiences and the reception of digital historiography by demonstrating the value of methods drawn from human-computer interaction, including heuristic evaluation, trace ethnography and semi-structured interviews. This thesis also investigates the relationship between heritage crowdsourcing projects (which ask the public to help with meaningful, inherently rewarding tasks that contribute to a shared, significant goal or research interest related to cultural heritage collections or knowledge) and the development of historical skills and interests. It situates crowdsourcing and citizen history within the broader field of participatory digital history and then focuses on the impact of digitality on the research practices of faculty and community historians. Chapter 1 provides an overview of over 400 digital history projects aimed at engaging the public or collecting, creating or enhancing records about historical materials for scholarly and general audiences. Chapter 2 discusses design factors that may influence the success of crowdsourcing projects. Following this, Chapter 3 explores the ways in which some crowdsourcing projects encourage deeper engagement with history or science, and the role of communities of practice in citizen history. Chapter 4 shifts our focus from public participation to scholarly practices in historical research, presenting the results of interviews conducted with 29 faculty and community historians. Finally, the Conclusion draws together the threads that link public participation and scholarly practices, teasing out the ways in which the practices of discovering, gathering, creating and sharing historical materials and knowledge have been affected by digital methods, tools and resources.
One dimensional cell motility patterns
Creators: name: Ron, Jonathan E.
name: Monzo, Pascale
name: Gauthier, Nils
name: Voituriez, Raphael
name: Gov, Nir S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Cell Behavior (q-bio.CB)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: During migration cells exhibit a rich variety of seemingly random migration patterns, which makes unraveling the underlying mechanisms that control cell migration a daunting challenge. For efficient migration cells require a mechanism for polarization, so that traction forces are produced in the direction of motion, while adhesion is released to allow forward migration. To simplify the study of this process cells have been studied when placed along one-dimensional tracks, where single cells exhibit both smooth and stick-slip migration modes. The stick-slip motility mode is characterized by protrusive motion at the cell front, coupled with slow cell elongation, which is followed by rapid retractions of the cell back. In this study, we explore a minimal physical model that couples the force applied on the adhesion bonds to the length variations of the cell and the traction forces applied by the polarized actin retrograde flow. We show that the rich spectrum of cell migration patterns emerges from this model as different \emph{deterministic} dynamical phases. This result suggests a source for the large cell-to-cell variability (CCV) in cell migration patterns observed in single cells over time and within cell populations. The large heterogeneity can arise from small fluctuations in the cellular components that are greatly amplified due to moving the cells' internal state across the dynamical phase transition lines. Temporal noise is shown to drive random changes in the cellular polarization direction, which is enhanced during the stick-slip migration mode. These results offer a new framework to explain experimental observations of migrating cells, resulting from noisy switching between underlying deterministic migration modes.
description: 24 pages, 27 figures
Influence of Initialization on the Performance of Metaheuristic Optimizers
Creators: name: Li, Qian
name: Liu, San-Yang
name: Yang, Xin-She
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Machine Learning (cs.LG)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 90C59, 90C26

description: All metaheuristic optimization algorithms require some initialization, and the initialization for such optimizers is usually carried out randomly. However, initialization can have some significant influence on the performance of such algorithms. This paper presents a systematic comparison of 22 different initialization methods on the convergence and accuracy of five optimizers: differential evolution (DE), particle swarm optimization (PSO), cuckoo search (CS), artificial bee colony (ABC) algorithm and genetic algorithm (GA). We have used 19 different test functions with different properties and modalities to compare the possible effects of initialization, population sizes and the numbers of iterations. Rigorous statistical ranking tests indicate that 43.37\% of the functions using the DE algorithm show significant differences for different initialization methods, while 73.68\% of the functions using both PSO and CS algorithms are significantly affected by different initialization methods. The simulations show that DE is less sensitive to initialization, while both PSO and CS are more sensitive to initialization. In addition, under the condition of the same maximum number of function evaluations (FEs), the population size can also have a strong effect. Particle swarm optimization usually requires a larger population, while the cuckoo search needs only a small population size. Differential evolution depends more heavily on the number of iterations, a relatively small population with more iterations can lead to better results. Furthermore, ABC is more sensitive to initialization, while such initialization has little effect on GA. Some probability distributions such as the beta distribution, exponential distribution and Rayleigh distribution can usually lead to better performance. The implications of this study and further research topics are also discussed in detail.
description: 39 pages, 10 figures, 20 tables
Superfluid--Insulator Transition in Commensurate One-Dimensional Bosonic System with Off-Diagonal Disorder
Creators: name: Balabanyan, Karén G.
name: Prokof'ev, Nikolay
name: Svistunov, Boris
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study the nature of the superfluid--insulator quantum phase transition in a one-dimensional system of lattice bosons with off-diagonal disorder in the limit of large integer filling factor. Monte Carlo simulations of two strongly disordered models show that the universality class of the transition in question is the same as that of the superfluid--Mott-insulator transition in a pure system. This result can be explained by disorder self-averaging in the superfluid phase and applicability of the standard quantum hydrodynamic action. We also formulate the necessary conditions which should be satisfied by the stong-randomness universality class, if one exists.
description: 4 pages, 4 figures. Typo in figure 4 of ver. 3 is corrected
NIERÓWNOWAGA FINANSÓW SAMORZĄDOWYCH A POZIOM ZRÓWNOWAŻENIA ROZWOJU GMIN WIEJSKICH WOJEWÓDZTWA MAŁOPOLSKIEGO
Creators: name: Sroka, Wojciech
name: Pogan, Patryk
name: Sroka, Wojciech
name: Pogan, Patryk
Publisher: name: Unknown
Year: 2015
Subjects: Agricultural Finance
Community/Rural/Urban Development
Public Economics

description: This analysis aims to present the influence of imbalance of self-government finance of rural communes in Małopolska province on the level of their development in economic, environmental and social aspects. Zero unitarization method and indexes of stochastic structure were used to carry out this research. The results showed that the increase in imbalance of self-government finance of rural communes is concomitant with the influx in their level of development in economic, environmental and social aspects. Taking into account a short-term perspective, it should be pinpointed that the imbalance of self-government finance has a positive effect on the level of development of the researched communes.
Critical and sensitive periods for reversing the effects of mechanosensory deprivation on development in Caenorhabditis elegans
Creators: name: Rai, Susan
Publisher: name: University of British Columbia
Year: 2010

description: Sensory experience at different stages during development can alter structures and functions of the nervous system in different ways suggesting that the timing of the occurring experience is critical. In these studies, I used the nematode Caenorhabditis elegans as a model organism to demonstrate the effects of deprivation of mechanosensory experience on behaviour and development; I identified critical and sensitive periods for reversing the detrimental effects of deprivation by introducing mechanosensory experience during development. Earlier studies found that worms reared in isolation, without the mechanosensory stimulation from conspecifics, respond significantly less to a mechanical tap stimulus and are significantly shorter in body length than worms raised in age-matched colonies. An examination of elements of the synapse between the mechanosensory neurons and the command interneurons showed that in isolate-raised worms, this synapse was weaker (fewer post-synaptic glutamate receptors and fewer pre synaptic vesicles) than the synapses of worms raised in a colony condition. In this thesis, brief mechanical stimulation at any time during development reversed the effects of isolation on the behavioral response to tap and glutamate receptor expression suggesting there is no critical period for these two measures. In addition low levels of stimulation early in development (at the beginning of larval stage LI), but not later, rescued presynaptic vesicular marker pmec-7::SNB-1::GFP vesicle expression suggesting there is a period during which brief mechanosensory stimulation can reverse the effects of isolation very easily. Larger amounts of mechanosensory stimulation resulting from rearing worms in isolation and transferring them to a colony at the start of LI, L2 or L3 rescued the effects of isolation on body growth suggesting there is a critical period to reverse the effects of isolation on worm length that ends during L 3 . These results suggest that development of different systems follow different rules/time courses. Rescuing one aspect of development will not necessarily reverse the total effects of isolation on the developing organism. Different aspects of development will require varying amounts of stimuli at varying time points in development, which would all need to be taken into account to fully rescue the effects of deprivation on the organism.
ZRÓŻNICOWANIE PRZESTRZENNE SYTUACJI DOCHODOWEJ GMIN A ROZWÓJ SPOŁECZNO-GOSPODARCZY OBSZARÓW WIEJSKICH W POLSCE
Creators: name: Stanny, Monika
name: Strzelczyk, Wojciech
name: Stanny, Monika
name: Strzelczyk, Wojciech
Publisher: name: Unknown
Year: 2015
Subjects: subject: Community/Rural/Urban Development
subject: Financial Economics
subject: municipal incomes
subject: the level of rural development
subject: socio-economic development
subject: correlation account
subject: taxonomic analysis

description: The objective of the analysis was to explore the spatial variation of the Polish municipalities’ income situation and to identify the relationship between the relative measure of the income situation (and its components) and the level of socio-economic development. The following hypotheses have been verified: -The distribution assessment of the income situation is spatially polarized; -There is a strong and positive correlation between the measure of the income situation and the level of socio-economic development; -The higher the level of socio-economic development, the lower the share of public funds transfers. The analysis was performed for the period 2010-2012, using data BDL. 2173 of rural and urban-rural municipalities are the subject of the study
Strings, Junctions and Stability
Creators: name: Mukherjee, Avijit
name: Mukhopadhyay, Subir
name: Ray, Koushik
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Identification of string junction states of pure SU(2) Seiberg-Witten theory as B-branes wrapped on a Calabi-Yau manifold in the geometric engineering limit is discussed. The wrapped branes are known to correspond to objects in the bounded derived category of coherent sheaves on the projective line $\cp{1}$ in this limit. We identify the pronged strings with triangles in the underlying triangulated category using Pi-stability. The spiral strings in the weak coupling region are interpreted as certain projective resolutions of the invertible sheaves. We discuss transitions between the spiral strings and junctions using the grade introduced for Pi-stability through the central charges of the corresponding objects.
description: 15 pages, LaTeX; references added. typos corrected
General-relativistic spin system
Creators: name: Artigas, Danilo
name: Bilski, Jakub
name: Crowe, Sean
name: Mielczarek, Jakub
name: Trześniewski, Tomasz
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The models of spin systems defined on Euclidean space provide powerful machinery for studying a broad range of condensed matter phenomena. While the non-relativistic effective description is sufficient for most of the applications, it is interesting to consider special and general relativistic extensions of such models. Here, we introduce a framework that allows us to construct theories of continuous spin variables on a curved spacetime. Our approach takes advantage of the results of the non-linear field space theory, which shows how to construct compact phase space models, in particular for the spherical phase space of spin. Following the methodology corresponding to a bosonization of spin systems into the spin wave representations, we postulate a representation having the form of the Klein-Gordon field. This representation is equivalent to the semi-classical version of the well-known Holstein-Primakoff transformation. The general-relativistic extension of the spin wave representation is then performed, leading to the general-relativistically motivated modifications of the Ising model coupled to a transversal magnetic field. The advantage of our approach is its off-shell construction, while the popular methods of coupling fermions to general relativity usually depend on the form of Einstein field equations with matter. Furthermore, we show equivalence between the considered spin system and the Dirac-Born-Infeld type scalar field theory with a specific potential, which is also an example of k-essence theory. Based on this, the cosmological consequences of the introduced spin field matter content are preliminarily investigated.
description: 19 pages, 3 figures v2 rewritten parts of Secs. I-III, some clarifications elsewhere, typos corrected, references added, 1 extra figure
Superconductivity in charge Kondo systems
Creators: name: Dzero, Maxim
name: Schmalian, Joerg
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present a theory of superconductivity in charge Kondo systems, materials with resonant quantum valence fluctuations, in the regime where the transition temperature is comparable to the charge Kondo resonance. We find superconductivity induced by charge Kondo impurities, study how pairing of a superconducting host is enhanced due to charge Kondo centers and investigate the interplay between Kondo-scattering and inter-impurity Josephson coupling. We discuss the implications of our theory for Tl-doped PbTe, which has recently been identified as a candidate charge Kondo system.
description: 4 pages, 4 figures; revised version; detailed discussion on the physics of Tl-doped PbTe added
Physarum cremiluteum Y. F. Chen & C. H. Liu
Creators: name: Kryvomaz, Tetiana
name: Michaud, Alain
name: Stephenson, Steven L.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Fungi
Mycetozoa
Myxomycetes
Physarales
Physaraceae
Physarum
Physarum cremiluteum

description: * Physarum cremiluteum Y.F. Chen & C.H. Liu (17 FC, 8 loc, 6 ps)
 Loc. 4 Mahé: On fallen leaves of Dillenia suffruticosa, AM 3069, TK2831 (3FC). On fallen leaves of Mangifera indica, AM 3066, TK2826. Loc. 6 Mahé: On fallen leaves of Tabebuia pallida, AM 3087, TK2880. On wood of fallen large branch of Cinnamomum verum, AM 3079, TK2867. On fallen leaves of Tabebuia pallida, AM 3084, TK2876 (2FC). Loc. 22b Praslin: On fallen leaves and twigs of Cinnamomum verum & Falcataria moluccana & Tabebuia pallida, AM2765, TK2176. Loc.28a La Digue: On fallen leaves of Calophyllum inophyllum, AM2930, TK2478. Loc. 34b La Digue: On fallen leaves of Terminalia catappa, AM2900, TK2435. Loc. 35 La Digue: On fallen leaves accumulated between roots of living tree Terminalia catappa, AM2885, TK2415. Loc. 39b La Digue: On fallen leaf of Calophyllum inophyllum, AM2981, TK2558 (3FC). Loc. 42b La Digue: On fallen leaf of Terminalia catappa, AM2950, TK2512, AM2956, TK2521.
description: Published as part of Kryvomaz, Tetiana, Michaud, Alain & Stephenson, Steven L., 2020, Myxomycete biodiversity on five islands of the Seychelles, pp. 201-244 in Zootaxa 4851 (2) on page 236, DOI: 10.11646/zootaxa.4851.2.1, http://zenodo.org/record/4407410
21 cm Absorption Studies with the Square Kilometer Array
Creators: name: Kanekar, N.
name: Briggs, F. H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: HI 21~cm absorption spectroscopy provides an excellent probe of the neutral gas content of absorbing galaxies, yielding information on their kinematics, mass, physical size and ISM conditions. The high sensitivity, unrivaled frequency coverage and RFI suppression techniques of the SKA will enable it to use HI absorption to study the ISM of high column density intervening systems along thousands of lines of sight out to high redshifts. Blind SKA 21~cm surveys will yield large, unbiased absorber samples, tracing the evolution of normal galaxies and active galactic nuclei from $z \gtrsim 6$ to the present epoch. It will thus be possible to directly measure the physical size and mass of typical galaxies as a function of redshift and, hence, to test hierarchical models of structure formation.
description: 12 pages, 7 figures. Uses espcrc2.sty. To appear in "Science with the Square Kilometer Array," eds. C. Carilli and S. Rawlings, New Astronomy Reviews (Elsevier: Amsterdam)
REGIONALNE ZRÓŻNICOWANIE PRODUKCJI PSZENICY W POLSCE
Creators: name: Sułek, Alicja
name: Jaśkiewicz, Bogusława
name: Sułek, Alicja
name: Jaśkiewicz, Bogusława
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: Crop Production/Industries
subject: wheat
subject: yield
subject: regional differentiation
subject: clusters

description: The aim of the study was to determine the factors influencing the regional diversity of wheat production in Poland. The analysis has shown that the regional diversity of wheat production in Poland is determined by both natural (climate, soil), and organizational and economical conditions. A higher concentration of this species cultivation is observed in the western and northern parts of Poland, which is associated with their level of agricultural culture, a higher intensity of production and agrarian structure. Favorable conditions for wheat production, ensuring its higher yields and better quality, can be found in Dolnośląskie and Opolskie voivodeships. These regions have developed commodity wheat production, which provides larger batches of uniform grains.
title: Mobilitätsverhalten auf Patriarh Evtimiiplatz in Sofia
Creators: name: Stoyneva, Aleksandra
Publisher: name: TU Wien
Year: 2016
Subjects: subject: Mobilitätsverfahren

description: Die vorliegende Diplomarbeit entstand im Jahr 2015, im Rahmen meines Studiums der Infrastrukturplanung und - managment an der Universität für Architektur, Bauwesen und Geodäsie. Das Thema meiner Diplomarbeit ist Mobilitätsverhalten auf Patriarh Evtimiiplatz in Sofia. Das ist für mich interessant, weil ich fast jeden Tag an diesem Platz vorbeigehe und alle Menschen überwache, die so viele sind. Und immer frage ich mich wie viele Leute und wie viele Autos pro Tag über diesen Platz gehen. Das Ziel meiner Diplomarbeit ist die Mobilitätssituation am Patriarh Evvtimiiplatz zu untersuchen und die Maßnahmen zur Verbesserung vorzuschlagen. Zu diesem Zweck (Untersuchung von Mobilitätssituation) werden objektiv messbare Parameter des Verkehrsverhalten und subjektive Aspekte des Verhaltens durch Videoerhebungen und Befragung ermittelt. Weiterhin möchte ich mich an dieser Stelle bedanken bei meinem Betreuer, Prof. Thomas Macoun, für seine inhaltliche Unterstützung, seine Gelassenheit bei zeitlichen Engpässen und sein aufmunterndes Feedback, das mich immer wieder sehr motiviert hat. Ganz besonders bedanken möchte ich mich bei meiner Mutter Krasimira, für ihre Unterstützung in jeglicher Hinsicht. Du hast mir nicht nur während meiner gesamten Studienzeit immer zur Seite gestanden, sondern warst und bist in allen Lebenslagen meine wichtigste Stütze.
description: This thesis was created in 2015, as part of my studies of infrastructure planning and - managment at the University of Architecture, Civil Engineering and Geodesy. The topic of my thesis is mobility behavior of the square Patriarh Evtimii in Sofia. This is interesting for me, because I go almost every day along this place and monitor all the people, who are so many. And I always wonder how many people and how many cars go per day through this square. The purpose of my thesis is the mobility situation at square Patriarh Evtimii investigate and propose measures to improve. For this purpose (investigate of mobility situation) are determined objectively measurable parameters of the traffic behavior and subjective aspects of behavior by video and survey. I would also like to take this opportunity to thank my supervisor, Prof. Thomas Macoun, for his support, his composure when time constraints and be encouraging feedback that I was always very motivated. I would particularly like to thank my mother Krasimira, for her support in all respects.
title: Analysing understandings of 'rough sleeping': managing, becoming and being homeless
Creators: name: McCulloch, Daniel Cameron
Publisher: name: The Open University
Year: 2015

description: This research considers the ways in which the lives of rough sleepers are understood. In doing so, it considers the ways in which rough sleepers are positioned by services, the ways in which rough sleepers account for their own lives, and the ways in which rough sleepers negotiate and manage their day-to-day experiences. Analysing previous literature and policy, the research claims that lives might be better understood using a narrative approach alongside other methods. Therefore, it employs methods of life mapping and auto-photography with rough sleepers, alongside participant observation and semi-structured interviews with service providers. These methods aided the understanding of the ways in which each group understands rough sleepers’ lives. The research finds that in contrast to policy and service provider discourses, which often focus on deficits, discourses of poor decision making in ideas of causation, and dichotomies of deservingness, rough sleepers’ own accounts focus on the importance of context to develop an understanding of the importance of key life events. Furthermore, the research suggests that understandings of rough sleepers’ lives presented in policy and service provider discourses which see these lives as ‘chaotic’, ‘off track’ and ‘failed’ are in stark contrast to rough sleepers own accounts, which entail elements of order, success, and aspirations. In considering these alternative approaches to understanding the lives of rough sleepers, the study proposes that narrative approaches to engaging with rough sleepers, which recognise the agency that rough sleepers have, could provide a way to better understand the ways in which rough sleepers understand their own lives.
MILLIY TARBIYA KLASTERALARINI BARPO ETISHDA SHARQ MUTAFAKKIRLARINING ILMIY ME'ROSIDAN FOYDALANISH
Creators: name: Otaxanov, Adhamjon
Publisher: name: Zenodo
Year: 2024

description: Sharq xalqlari o‘zgacha hayot tarzi, madaniyati, va boshqa xususiyatlari bilan dunyo tamadduniga munosib hissa qo‘shganini inobatga olgan holda, tarbiya klasterlarini yo‘lga qo‘yishda Sharqning dunyoga mashxur ziyolilari va mutafakkir namoyondalari qoldirgan ilmiy me’ros namunalari beqiyos ahamiyatga molik vosita bo‘la oladi. Ushbu maqolada Sharq mutafakkirlari ma’rifatchilik harakati va uning tarbiya klasterlariga ko‘rsata oladigan ta’siri ochib berilgan.
OCENA EFEKTYWNOŚCI EKONOMICZNEJ I ŚRODOWISKOWEJ UPRAWY PSZENICY OZIMEJ
Creators: name: Syp, Alina
name: Syp, Alina
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: Data Envelopment Analysis (DEA)
subject: technical efficiency
subject: N2 O emission
subject: winter wheat

description: The aim of this study was to assess an economic and environmental efficiency of winter wheat in Wielkopolska and Śląsk Region in 2010. The ananlysis comprised 17 agricultural holdings from Polish FADN database with cultivation winter wheat area ranging from 21 to 50 ha. The non-parametric input oriented model of Data Envelopment Analysis (DEA) was used to benchmark a productive efficiency. In the analyzed group of farms, 59% were technically inefficient. The average technical efficiency for the whole group was 0.91, whereas in the group of inefficient farms, it amounted to 0.84. In order to achieve full technical efficiency, inefficient farms should reduce inputs by an average of 16% while maintaining the same outputs. The results of the economic analysis showed that the total costs of production could decrease from od 366,52 to 1020,56 PLN per ha, and from 0,07 to 0,21 PLN per kg of grains, if inefficient units were converted to an efficient operation. This could be achieved by modifying the farm management and applying of new production technologies. Optimization of nitrogen fertilization on inefficient farms will decrease its emissions by 5.1 kg N2 O.
Fault slip in hydraulic stimulation of geothermal reservoirs: governing mechanisms and process-structure interaction
Creators: name: Berre, Inga
name: Stefansson, Ivar
name: Keilegavlen, Eirik
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geophysics (physics.geo-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Hydraulic stimulation of geothermal reservoirs in low-permeability basement and crystalline igneous rock can enhance permeability by reactivation and shear dilation of existing fractures. The process is characterized by interaction between fluid flow, deformation, and the fractured structure of the formation. The flow is highly affected by the fracture network, which in turn is deformed because of hydromechanical stress changes caused by the fluid injection. This process-structure interaction is decisive for the outcome of hydraulic stimulation, and, in analysis of governing mechanisms, physics-based modeling has potential to complement field and experimental data. Here, we show how recently developed simulation technology is a valuable tool to understand governing mechanisms of hydromechanical coupled processes and the reactivation and deformation of faults. The methodology fully couples flow in faults and matrix with poroelastic matrix deformation and a contact mechanics model for the faults, including dilation because of slip. Key elements are high aspect ratios of faults and strong nonlinearities in highly coupled governing equations. Example simulations using our open-source software illustrate direct and indirect hydraulic fault reactivation and corresponding permeability enhancement. While conceptually simple, the examples illustrate the strong hydromechanical couplings and the prospects of physics-based numerical models in investigating the dynamics.
Physarum decipiens M. A. Curtis
Creators: name: Kryvomaz, Tetiana
name: Michaud, Alain
name: Stephenson, Steven L.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Fungi
Mycetozoa
Myxomycetes
Physarales
Physaraceae
Physarum
Physarum decipiens

description: Physarum decipiens M.A. Curtis (2 MC, 1 loc, 2 ps)
 Loc. 48 Curieuse: On bark of living tree Calophyllum inophyllum, SLS 32435 (MC pH 5.9). On bark of living tree Thespesia populnea, SLS 32190 (MC pH 6.1).
description: Published as part of Kryvomaz, Tetiana, Michaud, Alain & Stephenson, Steven L., 2020, Myxomycete biodiversity on five islands of the Seychelles, pp. 201-244 in Zootaxa 4851 (2) on page 237, DOI: 10.11646/zootaxa.4851.2.1, http://zenodo.org/record/4407410
Ferrario_supplementary material_5May2020_updated.pdf
Creators: name: Ferrario, Alessandra
name: Stephens, Peter
name: Xiaodong, Guan
name: Ross-Degnan, Dennis
name: Wagner, Anita
Publisher: name: figshare
Year: 2020
Subjects: subject: 111205 Chemotherapy
subject: FOS: Clinical medicine
subject: 111799 Public Health and Health Services not elsewhere classified
subject: FOS: Health sciences

description: Supplementary material to journal article
Collecting sustainability data in different organisational settings of the European Farm Accountancy Data Network
Creators: name: Vrolijk, Hans
name: Poppe, Krijn
name: Keszthelyi, Szilárd
name: Vrolijk, Hans
name: Poppe, Krijn
name: Keszthelyi, Szilárd
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Environmental Economics and Policy
subject: Farm Management
subject: Financial Economics
subject: Institutional and Behavioral Economics
subject: Land Economics/Use
subject: Livestock Production/Industries
subject: Production Economics
subject: liaison agency
subject: sustainability indicators
subject: data collection

description: The European Farm Accountancy Data Network (FADN) collects detailed fi nancial economic information on a sample of farms in Europe. These data are used intensively for the evaluation of the European Union’s Common Agricultural Policy. Owing to changes in policies, there is a need for a broader set of farm level data, especially on the sustainability performance of farms. This paper describes the different types of FADN systems in Europe and evaluates how these types affect the feasibility of collecting sustainability data. In addition to a theoretical evaluation, the practical experiences of collecting sustainability data on more than 1,000 farms in Europe are described. The paper concludes with a discussion on the advantages and challenges of extending the scope of FADN data collection with sustainability data.
description: http://dx.doi.org/10.7896/j.1626
Spontaneous vortex formation on a superconductor film
Creators: name: Donaire, M.
name: Kibble, T. W. B.
name: Rajantie, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We carry out numerical simulations to investigate spontaneous vortex formation during a temperature quench of a superconductor film from the normal to the superconducting phase in the absence of an external magnetic field. Our results agree roughly with quantitative predictions of the flux trapping scenario: In fast quenches the agreement is almost perfect, but there appears to be some discrepancy in slower ones. In particular, our simulations demonstrate the crucial role the electromagnetic field plays in this phenomenon, making it very different from vortex formation in superfluids. Besides superconductor experiments, our findings also shed more light on the possible formation of cosmic defects in the early universe.
description: 9 pages, 8 figures