cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Beyond Time III Emergent Geometry and the Scalar Field of Change
Creators: name: Yildirim, Kubilay
Publisher: name: Zenodo
Year: 2025

description: Abstract:

This paper advances the hypothesis that time is not a fundamental dimension but an emergent scalar field encoding the local rate of distinguishable physical transitions. Building upon the information-theoretic foundations laid in Beyond Time I and the causal boundary constraint explored in Beyond Time II, we now propose a redefinition of spacetime geometry wherein coordinate time is removed from the metric tensor and replaced by a scalar field T(xi)T(x_i). This field expresses the local transition potential of a physical system, shaped by entropy gradients and the distinguishability of quantum states. Rather than operating over a (3+1) dimensional manifold, the geometry of the universe is reframed as a spatial configuration space layered with transition rate dynamics. Causality is not governed by chronological sequence, but by the propagation limits of information and state change, bounded by the speed of light and thermodynamic irreversibility. This paper outlines the theoretical framework of this emergent scalar field, its implications for general relativity and quantum theory, and explores experimental frontiers where temporal flow may be variable, halted, or reversed.
Dynamical Conifold Transitions and Moduli Trapping in M-Theory Cosmology
Creators: name: Mohaupt, Thomas
name: Saueressig, Frank
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study five-dimensional Kasner cosmologies in the vicinity of a conifold locus occurring in a time-dependent Calabi-Yau compactification of M-theory. The dynamics of M2-brane winding modes, which become light in this region, is taken into account using a suitable gauged supergravity action. We find cosmological solutions which interpolate between the two branches of the transition, establishing that conifold transitions can be realized dynamically. However, generic solutions do not correspond to transitions, but to the moduli getting trapped close to the conifold locus. This effect results from an interplay between the scalar potential and Hubble friction. We show that the dynamics does not depend on the details of the potential, but only on its overall shape.
description: 23 pages, 3 figures
Interest Rate Expectations in the Media and Central Bank Communication
Creators: name: Lamla, Michael J.
name: Sturm, Jan-Egbert
Publisher: name: ETH Zurich
Year: 2013
Subjects: INFORMATION + COMMUNICATION
Europäische Zentralbank
MONETARY POLICY
ZINSSATZ
Central Bank communication
INTEREST RATE
European Central Bank
Monetary policy announcements
INFORMATION + KOMMUNIKATION
FINANCIAL MARKETS
GELDPOLITIK
FINANZMÄRKTE
Media expectations
info:eu-repo/classification/ddc/330
Economics

description: KOF Working Papers, 334
Understanding Corruption in Public Procurement and its Effects on Tax Morale in the Developing Countries
Creators: name: Siddiqui, Zeeshan Noor
Publisher: name: figshare
Year: 2020
Subjects: subject: 150309 Logistics and Supply Chain Management
subject: FOS: Economics and business
subject: 150107 Taxation Accounting
subject: 140213 Public Economics- Public Choice
subject: 140215 Public Economics- Taxation and Revenue

description: Supply Chain Management (SCM) is a multi-dimensional and multi-facet term, which encompasses an array of activities of fundamental importance to corporations and public sector organizations (hereafter, PSOs) alike including buying (interchangeably purchasing, sourcing, or procuring). Council of SCM Professionals (CSCMP1; established 1963), defines SCM as, “Supply chain management encompasses the planning and management of all activities involved in sourcing and procurement, conversion, and all logistics management activities. Importantly, it also includes coordination and collaboration with channel partners, which can be suppliers, intermediaries, third party service providers, and customers. ‘Purchasing’ (interchangeably buying) of goods and services is divided into two main types: (1) ‘Purchasing and Supply Management’ (hereafter, PSM), and (2) ‘Public Procurement’. Former deals with buying of goods and services predominantly for the manufacturing concerns and later focuses on buying of goods and services for PSOs.
Mobile Localization in nonlinear Schrodinger lattices
Creators: name: Gomez-Gardenes, J.
name: Falo, F.
name: Floria, L. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Using continuation methods from the integrable Ablowitz-Ladik lattice, we have studied the structure of numerically exact mobile discrete breathers in the standard Discrete Nonlinear Schrodinger equation. We show that, away from that integrable limit, the mobile pulse is dressed by a background of resonant plane waves with wavevectors given by a certain selection rule. This background is seen to be essential for supporting mobile localization in the absence of integrability. We show how the variations of the localized pulse energy during its motion are balanced by the interaction with this background, allowing the localization mobility along the lattice.
description: 10 pages, 11 figures
The role of the dynein motor system on the trafficking of cardiac potassium ion channels
Creators: name: Khurana, Anu
Publisher: name: University of British Columbia
Year: 2010

description: In this thesis, we establish a role for the retrograde dynein motor in mediating the trafficking of cardiac potassium channels. Using dynamitin overexpression to disrupt the dynein motor complex, we demonstrate that dynein disruption doubles Kv1 .5 currents and increases surface Kv1.5 protein levels in HEK293 cells. Similar results were seen when these cells where treated with the endocytosis inhibitor, dynamin inhibitory peptide. Confocal images of HEK293 cells and rat atrial myocytes reveal a redistribution of Kv1.5 staining to the plasma membrane when dynein is disrupted, either by dynamitin overexpression or in the presence of the microtubule depolymerizing agent, nocodazole (35 μM). Sustained currents from rat atrial myocytes were increased by 2-fold upon nocodazole pretreatment. These increases in sustained currents were inhibited by the Kv1.5-specific blocker DMM (100 nM). We also demonstrate that Kv1.5 colocalizes with the early endosomal marker, EEAI, suggesting that Kv1.5 enters the early endosomal pathway. Taken together, these experiments suggest that Kv1.5 surface expression is regulated by the dynein-mediated endocytosis. In addition, pretreatment of nocodazole at 37°C reduced Ito currents by one-half. Furthermore, dynamitin overexpression in HEK293 cells reduced Kv4.2 and Kv4.3 channel currents and reduced Kv4.2 staining at the cell surface in confocal images. Dynein motility is coordinated by the anterograde motor, kinesin, and vice versa (Hamm-Alvarez et al., 1993; Valetti et al., 1999; Deacon et al., 2003). Given this and results from a previous report that suggest that the forward trafficking of Kv4.2 is mediated by kinesin, we suggest that dynein disruption impairs the anterograde trafficking of Kv4.2 and Kv4.3 channels (Chu et al., 2006). Lastly, we found no effect on lk1-like currents in nocodazole pretreated rat atrial myocytes at 37°C. Similarly, dynamitin overexpression and nocodazole did not alter the current density of the Ik1-forming channel. Kir2.1, in Itk- cells. This insensitivity of Kir2.1 may suggest an equal dependence for both the dynein and kinesin motor system in regulating the trafficking of Kir2.1 to the cell surface. On the whole, this thesis suggests variable dependencies of the dynein motor in the trafficking of various cardiac potassium channels, and as such, may have important implications in our understanding of the mechanisms that determine potassium channel trafficking in the heart.
KOF Analysen 2013, Nr. 3, Herbst
Creators: name: KOF Konjunkturforschungsstelle der ETH Zürich
Publisher: name: ETH Zurich
Year: 2013
Subjects: info:eu-repo/classification/ddc/330
Economics

description: KOF Analysen, 2013 (3)
description: ISSN:1662-3517
SPRAWNOŚĆ EKONOMICZNA WYBRANYCH FORM ROLNICTWA ZRÓWNOWAŻONEGO Z UWZGLĘDNIENIEM SPECYFIKI PRODUKCJI
Creators: name: Wrzaszcz, Wioletta
name: Prandecki, Konrad
name: Wrzaszcz, Wioletta
name: Prandecki, Konrad
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: forms of sustainable agriculture
subject: economic efficiency
subject: FADN

description: The purpose of the papaer was to present the economic efficiency of selected farms’ groups, affected the natural environment in different range, taking into account their type of farming. There were analysed 10,600 individual farms, covered by FADN in 2012. Research has shown a diversified economic efficiency analysed farms’ groups.
title: The Construction of Closure and Cadence in Gustav Mahler's Ninth Symphony and Das Lied von der Erde
Creators: name: Nixon, Mark
Publisher: name: The Open University
Year: 2008

description: My doctoral thesis uses Mahler's last two completed works, Das Lied von der Erde and the Ninth Symphony, in order to demonstrate that recent approaches to the analysis of late- Romantic music are still dependent on ideas which are themselves a product of Romantic ideology. Typically, the musical practice of the late-nineteenth century (and after) is characterised in terms of its subversive relationship with the music which preceded it, most notably music of the Classical period. To avoid falling in with this Romantic narrative of subversive mastery, the thesis carries out a close analytical reading of the music, but in the context of late-Romantic aesthetics. So, Mahler's actual practice in cadence formation is continually related to the aesthetics of the late-Romantic period as embodied in Mahler's own writings and reported comments. From the perspective of this late-Romantic aesthetic, a cadence which is considered subversive by Classical norms can be seen as normative, whilst equally, a cadence in a late-Romantic work which is normative from a Classical perspective, has a more complex relationship with the music which surrounds it. Romantic ideology is also apparent in a number of analyses of these works and these demonstrate that the perceived coherency of these works is based on aspects of Romantic ideology which are still embedded in twenty-first-century culture. Thus, I trace the influence of the Kantian and Schopenhauerian conceptions of the Sublime on responses to the end of Das Lied. By demonstrating that the organisation of the music at the close of this work does have a direct relationship with these concepts, this then shows why the openness of Das Lied's ending appears coherent. By contrast, the Ninth has no such simple relationship and this explains the difficulties which commentators often have with the ending of this work.
Dynamics of a Z2 symmetric EdGB gravity in spherical symmetry
Creators: name: Ripley, Justin L.
name: Pretorius, Frans
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 report on a numerical investigation of black hole evolution in an Einstein dilaton Gauss-Bonnet (EdGB) gravity theory where the Gauss-Bonnet coupling and scalar (dilaton) field potential are symmetric under a global change in sign of the scalar field (a 'Z2' symmetry). We find that for sufficiently small Gauss-Bonnet couplings Schwarzschild black holes are stable to radial scalar field perturbations, and are unstable to such perturbations for sufficiently large couplings. For the latter case, we provide numerical evidence that there is a band of coupling parameters and black hole masses where the end states are stable scalarized black hole solutions, in general agreement with the results of Macedo et al (2019 Phys. Rev. D 99 104041). For Gauss-Bonnet couplings larger than those in the stable band, we find that an 'elliptic region' forms outside of the black hole horizon, indicating the theory does not possess a well-posed initial value formulation in that regime.
description: 17 pages, 11 figures
KOF Analysen 2013, Nr. 4, Winter
Creators: name: KOF Konjunkturforschungsstelle der ETH Zürich
Publisher: name: ETH Zurich
Year: 2013
Subjects: info:eu-repo/classification/ddc/330
Economics

description: KOF Analysen, 2013 (4)
description: ISSN:1662-3517
One-Dimensional Multi-Band Correlated Conductors and Anderson Impurity Physics
Creators: name: Fabrizio, Michele
name: Tosatti, Erio
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A single Anderson impurity model recently predicted, through its unstable fixed point, the phase diagram of a two band model correlated conductor, well confirmed by Dynamical Mean Field Theory in infinite dimensions. We study here the one dimensional version of the same model and extract its phase diagram in this opposite limit of reduced dimensionality. As expected for one dimension, the Mott metal-insulator transition at half filling is replaced by a dimerized insulator-undimerized Mott insulator transition, while away from half filling the strongly correlated superconductivity for inverted Hund's rule exchange in infinite dimensions is replaced by dominant pairing fluctuations. Many other aspects of the one dimensional system, in particular the field theories and their symmetries are remarkably the same as those of the Anderson impurity, whose importance appears enhanced.
description: 4 pages, 1 figure
Role of "Papageno" in "The Magic Flute"
Creators: name: Mori, Michael David
Publisher: name: University of British Columbia
Year: 2010

description: The thesis for the Master of Music degree in Opera consists of the performance of a major role in one full opera production in the first or second year. My major role in one full opera production was Papageno performed in "The Magic Flute (Die Zaubeflöte)" on December 15th and 17th, 2006.
Tutorial: Calibration refinement in quantum annealing
Creators: name: Chern, Kevin
name: Boothby, Kelly
name: Raymond, Jack
name: Farré, Pau
name: King, Andrew D.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum annealing has emerged as a powerful platform for simulating and optimizing classical and quantum Ising models. Quantum annealers, like other quantum and/or analog computing devices, are susceptible to nonidealities including crosstalk, device variation, and environmental noise. Compensating for these effects through calibration refinement or "shimming" can significantly improve performance, but often relies on ad-hoc methods that exploit symmetries in both the problem being solved and the quantum annealer itself. In this tutorial we attempt to demystify these methods. We introduce methods for finding exploitable symmetries in Ising models, and discuss how to use these symmetries to suppress unwanted bias. We work through several examples of increasing complexity, and provide complete Python code. We include automated methods for two important tasks: finding copies of small subgraphs in the qubit connectivity graph, and automatically finding symmetries of an Ising model via generalized graph automorphism.
 Code is available at https://github.com/dwavesystems/shimming-tutorial.
Międzynarodowa pozycja konkurencyjna polskich artykułów rolno-spożywczych na rynkach wybranych krajów azjatyckich - stan i perspektywy
Creators: name: Kita, Katarzyna
name: Kita, Katarzyna
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Institutional and Behavioral Economics
subject: International Development
subject: International Relations/Trade
subject: competitiveness
subject: international trade
subject: model simulations
subject: liberalization of agri-food trade
subject: Asian markets
subject: konkurencyjność
subject: handel zagraniczny
subject: analiza symulacyjna
subject: liberalizacja handlu rolnego
subject: rynki azjatyckie

description: The significance of selected Asian countries in the Polish agri-food trade is presented in the paper. As well as some possible effects of a potential liberalization of agri-food trade for the competitive position of Polish agri-food products on the Asian markets. A deliberately selected set of quantitative measures of international competitiveness was used to carry out the ex post analysis and a mathematical model of general equilibrium GTAP was used to make ex ante analysis. Forecasts were made with two different variants of the liberalization of agricultural trade. The results of the analysis showed that Asian markets are attractive for Polish producers of products of animal origin, on which Poland has favorable competitive position. The GTAP simulation results indicated that in short term, regardless of the degree of liberalization of agricultural trade, the competitive position of Polish agrifood products of animal origin on the Asian markets will be maintained. / Synopsis. Celem artykułu było określenie znaczenia wybranych krajów azjatyckich w polskim handlu artykułami rolno-spożywczymi oraz zbadanie skutków potencjalnej liberalizacji handlu rolnego dla pozycji konkurencyjnej wybranych produktów rolno-spożywczych wytwarzanych w Polsce na tych rynkach. Analiza konkurencyjności artykułów rolno-spożywczych przeprowadzona została w ujęciu ex-post oraz ex-ante. W pierwszym wykorzystano celowo dobrany zestaw ilościowych mierników międzynarodowej pozycji konkurencyjnej, w drugim - prognozy wykonano przy wykorzystaniu matematycznego modelu równowagi ogólnej GTAP, przy założeniu dwóch różnych wariantów liberalizacji handlu rolnego. Na podstawie przeprowadzonych badań stwierdzono, że rynki azjatyckie są atrakcyjnymi rynkami zbytu dla polskich produktów pochodzenia zwierzęcego, w odniesieniu do których Polska posiada korzystną pozycję konkurencyjną. Wyniki symulacji GTAP wskazały, że perspektywie krótkookresowej, bez względu na stopień zliberalizowania handlu rolnego, pozycja konkurencyjna wytwarzanych w Polsce artykułów rolno-spożywczych pochodzenia zwierzęcego na rynkach azjatyckich zostanie utrzymana.
KOF Analysen 2014, Nr. 1, Frühjahr
Creators: name: KOF Konjunkturforschungsstelle der ETH Zürich
Publisher: name: ETH Zurich
Year: 2014
Subjects: info:eu-repo/classification/ddc/330
Economics

description: KOF Analysen, 2014 (1)
description: ISSN:1662-3517
INVESTIGATION OF REFLEX EXCITABILITY OF THE SEGMENTAL APPARATUS OF THE SPINAL CORD IN PATIENTS WITH FIBROMYALGIA
Creators: name: Egamov, Dadajon
Publisher: name: Zenodo
Year: 2024

description: Fibromyalgia (FM) has taken a strong place in recent years among the most urgent and complex problems of medicine. There is no doubt about the practical significance of its study, since FM is the most common form of chronic myalgic syndromes. Meanwhile, there are many unresolved issues in the problem of FM; it is called a myth, calling into question the reality of it as an independent disease.
Inwestorzy zagraniczni na polskim rynku nieruchomości
Creators: name: Klusek, Tomasz
name: Klusek, Tomasz
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Environmental Economics and Policy
subject: International Relations/Trade
subject: Land Economics/Use
subject: property market
subject: investment
subject: foreigners
subject: rynek nieruchomości
subject: inwestycje
subject: cudzoziemcy

description: Polish Accession to the EU triggered increase in interest of foreign investors (physical and legal persons) in acquirement of property rights on the way of direct purchases or indirectly through the purchase of shares of companies. The aim of the paper is an assessment of the scope of this process over the period of 2004-2014. In order to do so an analysis of the number and area covered with specification of the category of property, location and origin of capital involved was conducted on the basis of official financial statements and reports. A background for the conducted analysis is provided by overall situation on the Polish real estate market in the concerned period. According to official statistics (conditional upon of granted permissions or without them) foreign investors over the period of 2004-2014 acquired ca 41,2 thousand hectares of land properties which accounts for slightly over 0,13% of the total area of Poland. However real scope of this phenomenon is considerably higher than mentioned above. It considers also taking into account legal gaps informal market. / Synopsis. Przystąpienie Polski do Unii Europejskiej wpłynęło na wzrost zainteresowania inwestorów zagranicznych (osób fizycznych i prawnych) nabywaniem praw do nieruchomości w drodze bezpośredniego zakupu lub w sposób pośredni poprzez objęcie akcji bądź udziałów spółek handlowych będących ich posiadaczami. Celem artykułu jest ocena skali tego zjawiska w latach 2004-2014. W oparciu o oficjalne sprawozdania i raporty analizie poddano liczbę dokonanych transakcji i objętą nimi powierzchnię z uwzględnieniem rodzaju nieruchomości, ich lokalizacji i kraju pochodzenia kapitału. Tło prowadzonych rozważań stanowi sytuacja na polskim rynku nieruchomości w okresie objętym badaniem. Według oficjalnych statystyk w latach 2004-2014 na podstawie udzielonych zezwoleń i bez obowiązku ich uzyskania w rękach inwestorów zagranicznych znalazły się m.in. nieruchomości gruntowe o łącznej powierzchni około 41,2 tys. ha, co stanowi niewiele ponad 0,13% powierzchni Polski. Rzeczywista skala zjawiska jest jednak większa biorąc pod uwagę obrót nieformalny, wykorzystujący istniejące luki prawne.
KOF Analysen 2014, Nr. 2, Sommer
Creators: name: KOF Konjunkturforschungsstelle der ETH Zürich
Publisher: name: ETH Zurich
Year: 2014
Subjects: info:eu-repo/classification/ddc/330
Economics

description: KOF Analysen, 2014 (2)
description: ISSN:1662-3517
title: Tenants and residents associations and council collaboration: rhetoric and reality
Creators: name: Dalziel, Robert
Publisher: name: The Open University
Year: 2009

description: The aim of the thesis is to fill a gap in knowledge about collaboration and the possibilities that exist for the achievement of collaborative advantage by examining in detail the way that institutional pressure and power impacts on tenants and residents association (TARA) and council collaboration. Three levels of analysis are used to examine relations between institutional forces and power at the macro-level (including legislation, traditions and customs) and their affect on the political environment within which organizations are located and collaborate at the meso-level and individuals in organizations act at the micro-level. The thesis uses ideas and concepts that are part of institutional theory and theory on power to show what affect the national political environment has had on mandated TARA and council collaboration. The focus is on how effectively existing theory on collaboration and collaborative advantage deals with institutions, the ways in which they can impact on relations between collaborating organizations and the role of mandated collaboration when there are large inequalities of power between collaborating organizations with very different cultures and values. The research design comprised a longitudinal single case study to examine and analyse TARA and council collaboration. I adopted an ethnographic and grounded research approach to obtain people’s views and perspectives on collaboration for later coding and categorization that led to the emergence of various ideas, concepts and relations. My new concept that helps to explain how organizations can be involved in a process where they are disadvantaged in collaboration is introduced and developed.
Innowacje produktowe i procesowe w aspekcie zrównoważenia ekonomiczno-społecznego uwzględniającego bezpieczeństwo żywności – studium przypadku – propozycja nowych rozwiązań
Creators: name: Knapik, Wioletta
name: Knapik, Wioletta
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Food Security and Poverty
subject: innovations
subject: local development
subject: food safety
subject: pig farming
subject: innowacje
subject: rozwój lokalny
subject: bezpieczeństwo żywności

description: The article describes the problem of strengthening regional competition based on the implementation of innovative models of pork production and processing. It refers to the activities on the project created in the Unit of Social Policy and Agricultural Extension of the University of Agriculture in Cracow. The project takes into account pork production within the closed cycle farm using the Polish pigs. It assumes that the whole production and processing process and retail of the final products will be relatively under control. The project is localized in Czernichów and Liszki – communes located in the close neighborhood of Kraków. They are important due to a relatively large number of pork producers. However, they are not organized to cooperate with each other yet, and they are not accepted by the local community because of the harmful environmental impacts of pig farming. In contrast to the current situation a model will be prepared and implemented through the support of scientists, rural extension, the local community, the government and nongovernmental organizations. / Synopsis. Artykuł opisuje problematykę wzmacniania przewagi konkurencyjnej regionu opartej na implementacji innowacyjnego modelu w zakresie produkcji i przetwórstwa trzody chlewnej. Nawiązuje do koncepcji projektu tworzonego w Zakładzie Polityki Społecznej i Doradztwa Uniwersytetu Rolniczego w Krakowie. Projekt uwzględnia produkcję trzody chlewnej w cyklu zamkniętym, bazującą na rodzimej rasie świń i zakłada względne utrzymanie pod kontrolą całego procesu produkcyjno-przetwórczego wraz ze sprzedażą produktów gotowych. Projektem zostały objęte sąsiadujące ze sobą gminy powiatu krakowskiego – Czernichów i Liszki. Są one ważne dla tej działalności z następujących powodów: relatywnie duża liczba liczby producentów trzody chlewnej, jednakże nie bazująca na kooperatywie producenckiej; brak akceptacji społeczności lokalnej ze względu na zanieczyszczenie środowiska. Ten stan rzeczy ma zmienić wdrożenie opracowanego modelu przy wsparciu przedstawicieli środowiska naukowego, doradztwa rolniczego, lokalnej społeczności, samorządu terytorialnego oraz organizacji pozarządowych.
Robust interferometric sensing using two-photon interference
Creators: name: Aguilar, G. H.
name: Piera, R. S.
name: Saldanha, P. L.
name: Filho, R. L. de Matos
name: Walborn, S. P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Precise measurement of the angular deviation of an object is a common task in science and technology. Many methods use light for this purpose. Some of these exploit interference effects to achieve technological advantages, such as amplification effects, or simplified measurement devices. However, all of these schemes require phase stability to be useful. Here we show theoretically and experimentally that this drawback can be lifted by utilizing two-photon interference, which is known to be less sensitive to phase fluctuations. Our results show that non-classical interference can provide a path towards robust interferometric sensing, allowing for increased metrological precision in the presence of phase noise.
description: Accepted at Physical Review Applied
Ocena korzystania z usług w gospodarstwach rolnych krajów Unii Europejskiej – analiza typologiczna
Creators: name: Kołodziejczak, Małgorzata
name: Kołodziejczak, Małgorzata
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Farm Management
subject: International Relations/Trade
subject: Production Economics
subject: agriculture
subject: services
subject: typology
subject: rolnictwo
subject: usługi
subject: typologia

description: The aim of the paper was to assess the use of services on farms in the European Union countries. The method of comparative analysis was used in the research and homogeneous groups of the European Union countries due to the level of the use of services on farms have been separated using the Ward’s method. On the basis of the analysis of relevant values of features describing the level of the use of services six typological groups (types) of the European Union countries were separated. The results suggest that the level of use of services on farms to a greater extent than quantitative variables is affected by historical events and regulations related to the EU policy, but this issue requires further research. / Synopsis. Celem artykułu była ocena korzystania z usług w gospodarstwach rolnych w krajach Unii Europejskiej. Badanie wykonano z zastosowaniem metody analizy porównawczej, a grupy typologiczne krajów Unii Europejskiej, zbliżonych ze względu na poziom korzystania z usług przez gospodarstwa rolne, wyodrębniono metodą Warda. Na podstawie analizy wartości zmiennych opisujących stopień korzystania z usług utworzono sześć grup typologicznych (typy) państw Unii Europejskiej. Uzyskane wyniki pozwalają przypuszczać, że na zakres korzystania z usług w większym stopniu niż zmienne ilościowe oddziałują zaszłości historyczne i regulacje związane z polityką UE, jednak to zagadnienie wymaga dalszych badań.
KOF Analysen 2014, Nr. 3, Herbst
Creators: name: KOF Konjunkturforschungsstelle der ETH Zürich
Publisher: name: ETH Zurich
Year: 2014
Subjects: info:eu-repo/classification/ddc/330
Economics

description: KOF Analysen, 2014 (3)
description: ISSN:1662-3517
Zasoby pracy w Polsce ogółem i na wsi wobec przemian gospodarczych oraz trendów demograficznych
Creators: name: Kołodziejczak, Włodzimierz
name: Kołodziejczak, Włodzimierz
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: International Relations/Trade
subject: Labor and Human Capital
subject: labour resources
subject: reserves of labor resources
subject: economic growth
subject: demographic trends
subject: zasoby pracy
subject: rezerwy zasobów pracy
subject: wzrost gospodarczy
subject: trendy demograficzne

description: The aim of the paper was to analyse the level and changes in labour resources in Poland in total and in rural areas in the context of demographic and economic trends. Due to the existing demographic trends, in the next years the deficit of labour resources may appear and high costs of maintaining of pension system and public debt servicing may charge smaller and smaller group of employees. However, when adjusting the quality structure of labour demand and supply, Polish economy may benefit from the reserves of labour resources: unemployed and economically non-active population, especially from the surplus of employment in agriculture, which can be a valuable reservoir of labour force for non-agricultural sectors. This process will soften the negative effects of the reduction in the number of inhabitants of the country, but in a long run the economy may face a barrier to growth in terms of declining demand for products and services. / Synopsis. Celem artykułu było zbadanie wielkości oraz zmian zasobów pracy w Polsce ogółem i na wsi w kontekście przemian demograficznych i gospodarczych. Ze względu na występujące trendy demograficzne, w kolejnych latach może wystąpić niedobór siły roboczej i wysokie obciążenia coraz mniej licznej grupy pracujących, kosztami utrzymania systemu emerytalnego i obsługi zaciągniętego wcześniej przez państwo zadłużenia. Jednak polska gospodarka może, pod warunkiem dostosowania jakościowego struktury popytu i podaży pracy, korzystać z rezerw zasobów pracy: bezrobotnych i biernych zawodowo, a zwłaszcza z nadwyżek zatrudnienia w rolnictwie, które mogą stanowić cenny rezerwuar siły roboczej dla sektorów pozarolniczych. Złagodzi to negatywne skutki zmniejszania się liczby mieszkańców kraju, jednak w długim okresie gospodarka może napotkać barierę wzrostu w zakresie malejącego popytu wewnętrznego.
Supersymmetry on Graphs and Networks
Creators: name: Requardt, Manfred
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Combinatorics (math.CO)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We show that graphs, networks and other related discrete model systems carry a natural supersymmetric structure, which, apart from its conceptual importance as to possible physical applications, allows to derive a series of spectral properties for a class of graph operators which typically encode relevant graph characteristics.
description: 11 pages, Latex, no figures, remark 4.1 added, slight alterations in lemma 5.3, a more detailed discussion at beginning of sect.6 (zero eigenspace)
KOF Analysen 2014, Nr. 4, Winter
Creators: name: KOF Konjunkturforschungsstelle der ETH Zürich
Publisher: name: ETH Zurich
Year: 2014
Subjects: info:eu-repo/classification/ddc/330
Economics

description: KOF Analysen, 2014 (4)
description: ISSN:1662-3517
Successive Convexification with Feasibility Guarantee via Augmented Lagrangian for Non-Convex Optimal Control Problems
Creators: name: Oguri, Kenshiro
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: This paper proposes a new algorithm that solves non-convex optimal control problems with a theoretical guarantee for global convergence to a feasible local solution of the original problem. The proposed algorithm extends the recently proposed successive convexification (SCvx) algorithm by addressing one of its key limitations, that is, the converged solution is not guaranteed to be feasible to the original non-convex problem. The main idea behind the proposed algorithm is to incorporate the SCvx-based iteration into an algorithmic framework based on the augmented Lagrangian method to enable the feasibility guarantee while retaining favorable properties of SCvx. Unlike the original SCvx, this approach iterates on both of the optimization variables and the Lagrange multipliers, which facilitates the feasibility guarantee as well as efficient convergence, in a spirit similar to the alternating direction method of multipliers (ADMM) for large-scale convex programming. Convergence analysis shows the proposed algorithm's strong global convergence to a feasible local optimum of the original problem and its convergence rate. These theoretical results are demonstrated via numerical examples with comparison against the original SCvx algorithm.
description: 2023 62nd IEEE Conference on Decision and Control (CDC). IEEE, 2023
Direct measurement of the $7s\ ^2S_{1/2}\rightarrow$ $7p\ ^2P_{3/2}$ transition frequency in $^{226}$Ra$^{+}$
Creators: name: Holliman, C. A.
name: Fan, M.
name: Contractor, A.
name: Straus, M. W.
name: Jayich, A. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report a direct measurement of the $7s\ ^2S_{1/2}\rightarrow$ $7p\ ^2P_{3/2}$ electric dipole transition frequency in $^{226}$Ra$^{+}$. With a single laser-cooled radium ion we determine the transition frequency to be 785722.11(3) GHz by directly driving the transition with frequency-doubled light and measuring the frequency of the undoubled light with an iodine reference. This measurement addresses a discrepancy of five combined standard deviations between previously reported values.
description: 4 pages, 5 figures
Matrix-Scaled Consensus over Undirected Networks
Creators: name: Trinh, Minh Hoang
name: Vu, Hoang Huy
name: Le-Phan, Nhat-Minh
name: Nguyen, Quyen Ngoc
Publisher: name: arXiv
Year: 2023
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, we propose matrix-scaled consensus algorithms for linear dynamical agents interacting over an undirected network. Under the proposed algorithms, the state vectors of all agents to asymptotically agree up to some matrix scaling weights. First, the algebraic properties of the matrix-scaled Laplacian and the geometry of the matrix-scaled consensus space are studied. Second, we examine matrix-scaled consensus algorithms for networks of single-integrators with or without constant parametric uncertainties. Nonlinear and finite-time matrix-scaled consensus algorithms are also proposed. Third, observer-based matrix-scaled consensus algorithms for homogeneous or heterogeneous linear-time invariant agents are designed. The convergence of the proposed algorithms is asserted by rigorous mathematical analysis and supported by numerical simulations.
description: 17 pages, 8 figures, preprint submitted to a journal
Struktura obszarowa rolnictwa w Norwegii
Creators: name: Kozioł-Kaczorek, Dorota
name: Kozioł-Kaczorek, Dorota
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Land Economics/Use
subject: Norway
subject: agriculture
subject: agricultural area
subject: cultivated area
subject: Norwegia
subject: rolnictwo
subject: struktura obszarowa
subject: grunty rolne

description: A problem of the Norwegian agricultural policy, an assessment of the current state and ongoing changes in a structure of an area of agriculture in the years 2000 – 2015 is presented in this paper. The main aim of the publication is to characterize these changes in the considered period. There is not too many publications about the Norwegian agriculture. The data from Statistiska Sentralbyrå (Statistics Norway) were used in the analysis. The results indicate the negative dynamics of changes in the area structure of Norwegian agriculture i.e. the decrease of number of agricultural holdings and the decrease of agricultural area. / Synopsis. W publikacji przedstawiono problem norweskiej polityki rolnej oraz oceny stanu bieżącego i zachodzących przemian w strukturze obszarowej norweskiego rolnictwa w latach 2000 – 2015. Celem jest charakterystyka tych zmian w badanym okresie. W literaturze, tak anglojęzycznej jak i w języku norweskim, nie ma nazbyt wielu pozycji odnoszących się do norweskiego rolnictwa i zmian w jego strukturze obszarowej. W analizach posłużono się danymi z Statistisk Sentralbyrå (Statistics Norway), który jest odpowiednikiem polskiego Głównego Urzędu Statystycznego. Uzyskane wyniki wskazują na ujemną dynamikę zmian w strukturze obszarowej norweskiego rolnictwa, czyli spadek zarówno powierzchni gruntów rolnych jaki liczby gospodarstw rolnych.
KOF Analysen 2015, Nr. 1, Frühjahr
Creators: name: KOF Konjunkturforschungsstelle der ETH Zürich
Publisher: name: ETH Zurich
Year: 2015
Subjects: info:eu-repo/classification/ddc/330
Economics

description: KOF Analysen, 2015 (1)
description: ISSN:1662-3517
Large-scale magnetic fields from density perturbations
Creators: name: Matarrese, S.
name: Mollerach, S.
name: Notari, A.
name: Riotto, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive the minimal seed magnetic field which unavoidably arises in the radiation and matter eras, prior to recombination, by the rotational velocity of ions and electrons, gravitationally induced by the non-linear evolution of primordial density perturbations. The resulting magnetic field power-spectrum is fully determined by the amplitude and spectral index of density perturbations. The rms amplitude of the seed-field at recombination is B ~ 10^{-23} (λ/Mpc)^{-2} G, on comoving scales larger than about 1 Mpc.
description: 7 pages, 1 figure
Zarządzanie gospodarką rolną na terenach zalewowych w kontekście globalnych zmian klimatycznych
Creators: name: Kud, Krzysztof
name: Kud, Krzysztof
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Farm Management
subject: management
subject: water management
subject: climate change
subject: flooded areas
subject: zarządzanie
subject: gospodarka wodna
subject: zmiany klimatu
subject: tereny zalewowe

description: Global climate change is associated with increasing frequency of extreme events such as floods and droughts. These changes pose new challenges for the water management of the country. Agriculture, which is closely connected to natural conditions, including water, is facing new problems. Agriculture, outside the function of providing food, performs many other tasks, including ensuring water security. Small retention makes it possible to mitigate the effects of climate change. The appropriate agricultural development of riverside areas allows a small increase in retention. Studies on flood plains development were conducted in the south-east, in the valley of the San. Offices Municipalities and farmers in flood plains were studied, using the research tool of structured in-depth interviews. The aim of the work was to diagnose the development of the local economy and farmers in flood plains. / Synopsis. Obserwowane globalne zmiany klimatyczne wiążą się ze wzrostem częstotliwości występowania zjawisk ekstremalnych takich jak powodzie i susze. Zmiany te stawiają nowe wyzwania przed gospodarką wodną kraju. Rolnictwo, które jest ściśle związane z naturalnymi warunkami, w tym wodnymi, staje w obliczu nowych problemów. Rolnictwo poza funkcją dostarczania żywności pełni wiele innych zadań, w tym również zapewniania bezpieczeństwa wodnego. Mała retencja daje możliwość łagodzenia skutków zmian klimatu. Właściwe, rolnicze zagospodarowanie terenów nadrzecznych umożliwia zwiększenia małej retencji. Badania dotyczące zagospodarowania terenów zalewowych wykonano w Polsce południowo-wschodniej, w dolinie Sanu. Badano Urzędy Gmin oraz rolników gospodarujących na terenach zalewowych, narzędziem badawczym był ustrukturyzowany wywiad pogłębiony. Celem pracy była diagnoza kształtowania przez samorządy i rolników gospodarki na terenach zalewowych.
Rassismen im Bücherregal? Ein Praxisbericht von der kolonialen Spurensuche in der Bibliothek bis hin zu einer rassismuskritischen Bildung
Creators: name: Slezak, Gabriele
name: Schmelzer, Sarah
name: Ruscher, Andrea
name: Paintner, Jonas
name: Celebi, Erem
name: Baumgartner, Dani
Publisher: name: Humboldt-Universität zu Berlin
Year: 2021
Subjects: subject: Bibliothek
subject: Dekolonisierung
subject: library
subject: decolonization
subject: 020 Bibliotheks- und Informationswissenschaften

description: Bibliotheken verwalten Wissen. Bibliotheken sind Räume für Menschen. Was passiert, wenn all das auf kolonialer Vergangenheit aufbaut? Die C3-Bibliothek für Entwicklungspolitik in Wien hat 2018 begonnen, sich aktiv mit der eigenen Geschichte rassistischer Praktiken auseinanderzusetzen. Wir verstehen Dekolonialisierung von Bibliotheken als Prozess, der aktiv gestaltet werden muss. Dieser braucht einen Kompetenzaufbau für die inhaltliche Auseinandersetzung mit Rassismen in überwiegend weißen Institutionen durch Erwerben von theoretischem Wissen und kritische, selbstreflexive Auseinandersetzung mit rassistischen Denkweisen wie auch eine diskursive und partizipative Ausgestaltung mit breiter Einbindung der Akteur*innen. Damit Letzteres gelingen kann gilt es auf der Ebene der Nutzer*innen und Bürger*innen eine direkte und offene Thematisierung zu initiieren, die aktive Teilhabe und Engagement aller an der Debatte fördert. Für die C3-Bibiothek ist dafür die Vermittlung von Informationskompetenz als transformatorisches Werkzeug zentral. Sie ermöglicht ein Engagement, das sich manipulativen, entmenschlichenden und kolonisierenden Prinzipien widersetzen kann. Der Beitrag stellt erste Erfahrungen aus der Praxis und Reflexionsergebnisse dem Austausch mit gleichgesinnten Bibliotheken im deutschsprachigen Raum zur Verfügung.
Protection of parity-time symmetry in topological many-body systems: non-Hermitian toric code and fracton models
Creators: name: Shackleton, Henry
name: Scheurer, Mathias S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the study of $\mathcal{P}\mathcal{T}$-symmetric quantum systems with non-Hermitian perturbations, one of the most important questions is whether eigenvalues stay real or whether $\mathcal{P}\mathcal{T}$-symmetry is spontaneously broken when eigenvalues meet. A particularly interesting set of eigenstates is provided by the degenerate ground-state subspace of systems with topological order. In this paper, we present simple criteria that guarantee the protection of $\mathcal{P}\mathcal{T}$-symmetry and, thus, the reality of the eigenvalues in topological many-body systems. We formulate these criteria in both geometric and algebraic form, and demonstrate them using the toric code and several different fracton models as examples. Our analysis reveals that $\mathcal{P}\mathcal{T}$-symmetry is robust against a remarkably large class of non-Hermitian perturbations in these models; this is particularly striking in the case of fracton models due to the exponentially large number of degenerate states.
description: 20 pages, 6 figures
Training a Two Layer ReLU Network Analytically
Creators: name: Barbu, Adrian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Neural networks are usually trained with different variants of gradient descent based optimization algorithms such as stochastic gradient descent or the Adam optimizer. Recent theoretical work states that the critical points (where the gradient of the loss is zero) of two-layer ReLU networks with the square loss are not all local minima. However, in this work we will explore an algorithm for training two-layer neural networks with ReLU-like activation and the square loss that alternatively finds the critical points of the loss function analytically for one layer while keeping the other layer and the neuron activation pattern fixed. Experiments indicate that this simple algorithm can find deeper optima than Stochastic Gradient Descent or the Adam optimizer, obtaining significantly smaller training loss values on four out of the five real datasets evaluated. Moreover, the method is faster than the gradient descent methods and has virtually no tuning parameters.
description: 17 pages, 11 figures
Acoustic analogs of two-dimensional black holes
Creators: name: Cadoni, Mariano
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a general method for constructing acoustic analogs of the black hole solutions of two-dimensional (2D) dilaton gravity. Because by dimensional reduction every spherically symmetric, four-dimensional (4D) black hole admits a 2D description, the method can be also used to construct analogue models of 4D black holes. We also show that after fixing the gauge degrees of freedom the 2D gravitational dynamics is equivalent to an one-dimensional fluid dynamics. This enables us to find a natural definition of mass $M$, temperature $T$ and entropy $S$ of the acoustic black hole. In particular the first principle of thermodynamics $dM=TdS$ becomes a consequence of the fluid dynamics equations. We also discuss the general solutions of the fluid dynamics and two particular cases, the 2D Anti-de sitter black hole and the 4D Schwarzschild black hole.
description: some references added