cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Primordial dark matter from curvature induced symmetry breaking
Creators: name: Laulumaa, Laura
name: Markkanen, Tommi
name: Nurmi, Sami
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We demonstrate that adiabatic dark matter can be generated by gravity induced symmetry breaking during inflation. We study a $Z_2$ symmetric scalar singlet that couples to other fields only through gravity and for which the symmetry is broken by the spacetime curvature during inflation when the non-minimal coupling $ξ$ is negative. We find that the symmetry breaking leads to the formation of adiabatic dark matter with the observed abundance for the singlet mass $m\sim{\rm MeV}$ and $|ξ|\sim 1$.
description: 13 pages, 5 figures. v2; minor edits, published in JCAP
High pressure investigation of the heavy-fermion antiferromagnet U_3Ni_5Al_19
Creators: name: Bauer, E. D.
name: Sidorov, V. A.
name: Bobev, S.
name: Mixson, D. J.
name: Thompson, J. D.
name: Sarrao, J. L.
name: Hundley, M. F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Measurements of magnetic susceptibility, specific heat, and electrical resistivity at applied pressures up to 55 kbar have been carried out on single crystals of the heavy-fermion antiferromagnet U_3Ni_5Al_19, which crystallizes in the Gd_3Ni_5Al_19 orthorhombic structure with two inequivalent U sites. At ambient pressure, a logarithmic T-dependence of the specific heat and T-linear electrical resistivity below 5 K indicates non-Fermi liquid (NFL) behavior in the presence of bulk antiferromagnetic order at T_N=23 K. Electrical resistivity measurements reveal a crossover from non-Fermi liquid to Fermi liquid behavior at intermediate pressures between 46 kbar and 51 kbar, followed by a return to NFL T^{3/2} behavior at higher pressures. These results provide evidence for an ambient pressure quantum critical point and an additional antiferromagnetic instability at P_c=60 kbar.
description: 12 pages, 5 figures
Diminished ovarian reserve associates with pregnancy and birth outcomes after IVF: a retrospective cohort study
Creators: name: Can, Shen
name: Yang, Xiaoyan
name: He, Ye
name: Wang, Chao
name: Zou, Huijuan
name: Fan, Qingling
name: Xu, Xiaofeng
name: Cai, Guoqi
name: Yunxia, Cao
name: Xiaoqing, Peng
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Mathematical Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Antral follicle count (AFC) and serum anti-Müllerian hormone (AMH) are currently the most sensitive and reliable markers of ovarian reserve, but the role of AFC and AMH, as prognosis markers of diminished ovarian reserve (DOR), in pregnancy outcomes after embryo transfer (ET) have been inconsistent. A retrospective cohort study was conducted in a university-affiliated hospital. A total of 4599 women who received their first IVF treatment between January 2012 and December 2019 were included. Uni- and multi-variable regression models were used to determine the association of DOR evaluated by AFC and AMH with pregnancy, number of ET cycles to pregnancy, live birth, preterm birth, and low birth weight. Among the women included, 380 (8.3%) had DOR (i.e. AFC <5 or AMH <1.2 μg/L). After adjusting for confounders, DOR determined by AFC/AMH, AFC alone and AMH alone was associated with a lower pregnancy rate (Risk ratio [RR] 0.81, 95% confidence interval [CI] 0.73–0.89). Among women who were successfully pregnant, DOR evaluated by AFC/AMH but not evaluated by AFC alone or AMH alone was associated with an increased number of ET cycles to pregnancy (Odds ratio 1.43, 95% CI 1.04–1.96). DOR was not associated with the risks of live birth, low birth weight, and preterm birth. Women with DOR may have more difficulty becoming pregnant after IVF treatment, suggesting the predictive role of DOR in pregnancy outcomes before IVF treatment.
Analiza wskaźników płynności i zadłużenia indywidualnych gospodarstw rolnych
Creators: name: Bórawski, Piotr
name: Bórawski, Piotr
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: Farm Management
subject: Financial Economics
subject: ratio analysis
subject: liquidity
subject: debt
subject: farm
subject: / analiza wskaźnikowa
subject: płynność
subject: zadłużenie
subject: gospodarstwo rolne

description: Financial ratios in farms integrated in FADN system were analyzed in the paper. The farms were situated in the Mazowsze and Podlasie regions. A particular attention was paid to liquidity and debt ratios. The liquidity ratios achieved the highest value in small, average-small and average-big farms. The liquidity ratios were higher than proposed in literaure. But, the debt ratios were the highest in very small and very large farms. Farms do not use in full their financial resources. / Synopsis. W pracy badano wskaźniki finansowe indywidualnych gospodarstw rolnych integrowanych w systemie FADN. Gospodarstwa pochodziły z regionu FADN Mazowsze i Podlasie. Szczególną uwagę zwrócona na płynność finansową i zadłużenie. Wskaźniki płynności finansowej osiągnęły najwyższe wartości w gospodarstwach małych, średnio-małych i średnio-dużych. Wskaźniki płynności były wyższe od tych proponowanych w literaturze. Natomiast wskaźniki zadłużenia były najwyższe w gospodarstwach bardzo małych i bardzo dużych. Gospodarstwa rolne nie wykorzystują w pełni posiadanych zasobów finansowych.
Universal Leakage Elimination
Creators: name: Byrd, Mark S.
name: Lidar, Daniel A.
name: Wu, Lian-Ao
name: Zanardi, Paolo
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: ``Leakage'' errors are particularly serious errors which couple states within a code subspace to states outside of that subspace thus destroying the error protection benefit afforded by an encoded state. We generalize an earlier method for producing leakage elimination decoupling operations and examine the effects of the leakage eliminating operations on decoherence-free or noiseless subsystems which encode one logical, or protected qubit into three or four qubits. We find that by eliminating the large class of leakage errors, under some circumstances, we can create the conditions for a decoherence free evolution. In other cases we identify a combination decoherence-free and quantum error correcting code which could eliminate errors in solid-state qubits with anisotropic exchange interaction Hamiltonians and enable universal quantum computing with only these interactions.
description: 14 pages, no figures, new version has references updated/fixed
AN ADAPTIVE AND INTELLIGENT TUTOR BY EXPERT SYSTEMS FOR MOBILE DEVICES
Creators: name: IJMPICT
Publisher: name: Zenodo
Year: 2024

description: Mobile Learning (M-Learning) is an emerging discipline in the area of education and educational technology. So researchers are trying to optimize and expanding its application in the field of education. The aim of this paper is to investigate the role of mobile devices and expert systems in disseminating and supporting the knowledge gained by intelligent tutors and to propose a system based on integration of intelligent M-Learning with expert systems. It acts as an intelligent tutor which can perform three processes - pre-test, learning concept and post-test - according to characteristic of the learner. The proposed system can improves the education efficiency highly as well as decreases costs. As a result, every time and everywhere (ETEW) simple and cheap learning would be provided via SMS, MMS and so on in this system. The global intention of M-Learning is to make learning “a way of being”.
Global Stability and Periodicity in a Glucose-Insulin Regulation Model with a Single Delay
Creators: name: Angelova, M.
name: Beliakov, G.
name: Ivanov, A.
name: Shelyag, S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: A two-dimensional system of differential equations with delay modelling the glucose-insulin interaction processes in the human body is considered. Sufficient conditions are derived for the unique positive equilibrium in the system to be globally asymptotically stable. They are given in terms of the global attractivity of the fixed point in a limiting interval map. The existence of slowly oscillating periodic solutions is shown in the case when the equilibrium is unstable. The mathematical results are supported by extensive numerical simulations. It is shown that typical behaviour in the system is the convergence to either a stable periodic solution or to the unique stable equilibrium. The coexistence of several periodic solutions together with the stable equilibrium is demonstrated as a possibility.
description: Accepted to Communications in Nonlinear Science and Numerical Simulation
Lepton Flavor Violating Decays, Soft Leptogenesis and SUSY SO(10)
Creators: name: Chen, Mu-Chun
name: Mahanthappa, K. T.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate lepton flavor violating decays in a SUSY SO(10) model with symmetric textures recently constructed by us. Unlike the models with lop-sided textures which give rise to a large decay rate for mu -> e gamma, the decay rate we get is much suppressed and yet it is large enough to be accessible to the next generation of experiments. We have also investigated the possibility of baryogenesis resulting from soft leptogenesis. We find that with the soft SUSY masses assuming their natural values, B^\prime \equiv \sqrt{BM_{1}} ~ 1.4 TeV and Im(A) ~ 1 TeV, the observed baryon asymmetry in the Universe can be accommodated in our model. We have also updated the predictions of our model for the masses, mixing angles and CP violating measures in both charged fermion and neutrino sectors, using the most up-to-date experimental data as input.
description: RevTeX, 22 pages, 9 figures; v2: references added, version to appear in Phys. Rev. D
Program rolnośrodowiskowy i jego zakres realizacji w aspekcie rozwoju rolnictwa i ochrony środowiska
Creators: name: Brodzińska, Katarzyna
name: Brodzińska, Katarzyna
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Environmental Economics and Policy
subject: International Development
subject: agri-environmental programme
subject: packages of the programme
subject: direction of agricultural de- velopment
subject: / program rolnośrodowiskowy
subject: pakiety programu
subject: kierunki rozwoju rolnictwa

description: The aim of this article was to show the best experiences of agri-environmental programme in the EU countries with particular regard paid to the agri-environmental programme which was realized in Poland in years 2004-2006. The data were taken from the Agency for Agriculture Restructuring and Modernisation, EUROSTAT and the reports by European Commission, European Environmental Agency and World Wildlife Fund for a living planet. The European Union countries experiences showed that realization of agri-environmental programmes can give good environmental results. It is necessary to adjust packages of the programme to the natural conditions and create good evaluation system which can help to control this programme. It will help to control differences between tasks and results in individual packages and better connect the agricultural development with the evironmental protection. / Synopsis. Celem pracy było przybliżenie najlepszych praktyk w zakresie realizacji programów rolno-środowiskowych w krajach członkowskich UE ze szczególnym uwzględnieniem doświadczeń programu rolnośrodowiskowego realizowanego w Polsce w latach 2004-2006. Materiał badawczy stanowiły dane Agencji Restrukturyzacji i Modernizacji Rolnictwa, Ministerstwa Rolnictwa i Rozwoju Wsi, EUROSTATu oraz wyniki raportów Komisji Europejskiej, Europejskiej Agencji Środowiska (EEA), WWF Światowego Funduszu Na Rzecz Przyrody. Z doświadczeń krajów UE wynika, że realizacja programów rolnośrodowiskowych może przynieść mierzalne efekty środowiskowe. Konieczne jest jednak dostosowanie pakietów programu do uwarunkowań przyrodniczych oraz stworzenie sprawnego systemu oceny, dzięki której programy te będą skutecznie monitorowane. Pozwoli to kontrolować różnice między zadaniami i rezultatami poszczególnych pakietów, a także lepiej zsynchronizować rozwój rolnictwa z ochroną przyrody.
Deep Field Surveys - A Radio View
Creators: name: Garrett, M. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: I present an introductory review text, focusing on recent deep field studies using radio telescopes, including high-resolution, wide-field VLBI observations. The nature of the faint radio source population is discussed, taking into account complimentary data and results that are now available via the sub-mm, IR, optical and X-ray wave-bands. New developments regarding the increased sensitivity of VLBI and an expansion in the instruments field-of-view are also presented. VLBI may be an important tool in recognising distant, obscured AGN from the ``contaminant'' star forming galaxies that now dominate lower-resolution, sub-arcsecond and arcsecond radio observations.
description: See http://www.jive.nl/~mag/deep_fields/garrett.ps.gz for a better version. 19 pages, 10 figures, Review presented at the JENAM-2003 Symposium, "Radio Astronomy at 70: from Karl Jansky to microjansky," Budapest, Hungary, 27-30 August 2003. To be published by EDP Sciences, eds. L. Gurvits, S. Frey, and S. Rawlings
Lasing action in single subwavelength particles supporting supercavity modes
Creators: name: Mylnikov, Vasilii
name: Ha, Son Tung
name: Pan, Zhenying
name: Valuckas, Vytautas
name: Paniagua-Dominguez, Ramon
name: Demir, Hilmi Volkan
name: Kuznetsov, Arseniy I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: On-chip light sources are critical for the realization of fully integrated photonic circuitry. So far, semiconductor miniaturized lasers have been mainly limited to sizes on the order of a few microns. Further reduction of sizes is challenging fundamentally due to the associated radiative losses. While using plasmonic metals helps to reduce radiative losses and sizes, they also introduce Ohmic losses hindering real improvements. In this work, we show that, making use of quasi-bound states in the continuum, or supercavity modes, we circumvent these fundamental issues and realize the smallest purely semiconductor nanolaser thus far. Here, the nanolaser structure is based on a single semiconductor nanocylinder that intentionally takes advantage of the destructive interference between two supported optical modes, namely Fabry-Perot and Mie modes, to obtain a significant enhancement in the quality factor of the cavity. We experimentally demonstrate the concept and obtain optically pumped lasing action using GaAs at cryogenic temperatures. The optimal nanocylinder size is as small as 500 nm in diameter and only 330 nm in height with a lasing wavelength around 825 nm, corresponding to a size-to-wavelength ratio around 0.6. The obtained results pave the way for the development of smaller on-chip light sources free of Ohmic losses, which may find applications in the future photonic circuits.
description: 29 pages, 9 figures
Determinanty i perspektywy rozwoju procesów integracyjnych rolnictwa z przemysłem spożywczym na przykładzie Podkarpacia
Creators: name: Chorób, Roman
name: Chorób, Roman
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Livestock Production/Industries
subject: integrating processes
subject: agriculture
subject: food industry
subject: information
subject: qualification
subject: advising
subject: food economy
subject: food quality
subject: competition
subject: / procesy integracyjne
subject: rolnictwo
subject: przemysł spożywczy
subject: informacja
subject: kwalifikacje
subject: doradztwo
subject: gospodarka żywnościowa
subject: jakość
subject: konkurencja

description: Integrating processes between agriculture and food processing industry have been assessed basing on a study of information, qualifications, extension services in disposition of farmers in the Podkarpacie region in a mountainous southern part of Poland. Surveys of farmers and industrialists have been done with this respect. / Synopsis. W opracowaniu podjęto próbę ukazania istotnych czynników, jak również perspektyw rozwoju powiązań integracyjnych zachodzących pomiędzy rolnictwem a przemysłem spożywczym w województwie podkarpackim. W opracowaniu zaprezentowano wpływ informacji, kwalifikacji i doradztwa na ograniczanie barier rozwoju tych procesów. Przedmiotem badań były źródła informacji, posiadane kwalifikacje oraz potrzeby informacyjne i doradcze w zakresie rozwoju więzi integracyjnych, jak również opinie producentów rolnych i przedstawicieli podmiotów przetwórczych odnośnie praktycznego wykorzystania uzyskanych porad. Determinanty te stanowić mogą istotną przesłankę sprzyjającą ograniczaniu barier, jak również stwarzaniu możliwości rozwoju związków integracyjnych w gospodarce żywnościowej.
Do labels capture consumers’ actual willingness to pay for Fair Trade characteristics?
Creators: name: Vlaeminck, Pieter
name: Vranken, Liesbet
name: Vlaeminck, Pieter
name: Vranken, Liesbet
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Consumer/Household Economics
subject: Demand and Price Analysis
subject: Food Consumption/Nutrition/Food Safety
subject: International Development
subject: Fair Trade
subject: Chocolate
subject: Willingness to pay
subject: Label effectiveness
subject: Attitude behavior

description: Labeling schemes are used as a mechanism to inform consumers about products with both public and private characteristics. Consumers are increasingly interested in the ethical characteristics of food products and are willing to pay the premium for it. Nevertheless, market shares of ethically produced food products remain low. Not much research has been directed towards the question whether labels completely incorporate the ethical characteristics they stand for and are able to convey these values to consumers. Using two, partially incentive compatible, stated choice experiments in a natural consumer environment and chocolate as study object, we are able to compare consumers’ willingness to pay for a Fair Trade label and for the label’s underlying characteristics. Results show that dispersion exists between the value of a Fair Trade label and the actual values consumers attach to the underlying characteristics of Fair Trade.
Energy flux through the horizon in the black hole-domain wall systems
Creators: name: Stojkovic, Dejan
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study various configurations in which a domain wall (or cosmic string), described by the Nambu-Goto action, is embedded in a background space-time of a black hole in $(3+1)$ and higher dimensional models. We calculate energy fluxes through the black hole horizon. In the simplest case, when a static domain wall enters the horizon of a static black hole perperdicularly, the energy flux is zero. In more complicated situations, where parameters which describe the domain wall surface are time and position dependent, the flux is non-vanishing is principle. These results are of importance in various conventional cosmological models which accommodate the existence of domain walls and strings and also in brane world scenarios.
description: references added, accepted for publication in JHEP
Additional file 1 of Framing the numerical findings of Cochrane plain language summaries: two randomized controlled trials
Creators: name: Buljan, Ivan
name: Ružica Tokalić
name: Roguljić, Marija
name: Zakarija-Grković, Irena
name: Vrdoljak, Davorka
name: Milić, Petra
name: Puljak, Livia
name: Marušić, Ana
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: Additional file 1 Supplemental file legends: English translations of the modified Cochrane systematic review plain language summaries (CSR PLSs). Supplement A: Positive frame of numerical presentation in CSR PLSs. Supplement B: Negative frame of numerical presentation in CSR PLSs. Supplement C: Format A of numerical presentation in CSR PLSs. Supplement D: Format B of numerical presentation in CSR PLSs.
FOGYASZTÓI ETNOCENTRIZMUST BEFOLYÁSOLÓ TÉNYEZŐK VIZSGÁLATA – SZAKIRODALMI ÁTTEKINTÉS
Creators: name: Csatáriné Dogi, Ilona
name: Csatáriné Dogi, Ilona
Publisher: name: Unknown
Year: 2015
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Marketing
subject: FOS: Economics and business
subject: fogyasztói etnocentrizmus
subject: fogyasztói magatartás
subject: szakirodalmi áttekintés
subject: consumer ethnocentrism
subject: consumer behaviour
subject: literature review

description: Mára már számos kutatás bizonyította, hogy a fogyasztói magatartást a termék fizikai jellemzőin túl, társadalmi, kulturális és pszichológiai tényezők is befolyásolják. A szakirodalmi áttekintés célja a fogyasztói etnocentrizmus, mint a termékválasztásra ható tényező bemutatása volt. Az anyag ismerteti a fogyasztói etnocentrizmus fogalmának kialakulását, hogy hogyan lett egy szocio-pszichológiai fogalomból fogyasztói magatartást befolyásoló tényező. Átfogó képet nyújt a fogyasztói etnocentrizmusra ható demográfiai, szocio-pszichológiai tényezőkről, valamint a gazdasági és politikai környezet hatásairól. Emellett rövid betekintést nyújt a fogyasztói etnocentrizmus magyarországi helyzetébe. ----------------------------------------------------- Until now many studies have proved that the consumer behaviour was influenced by not only physical characteristics of the product but social, cultural and psychological factors. The purpose of the literature review was to present the consumer ethnocentrism as a factor of the product selection. The article demonstrates the development of the concept of consumer ethnocentrism, how to become from a socio-psyhological concept to an influencing factor of the consumer behaviour. The material provides a comprehensive study about the influencing factors of consumer ethnocentrism such as demographic, socio-psychological economic and political factors. In addition, it gives a brief insight into the position of consumer ethnocentrism in Hungary.
A complete search for redshift z>6.5 quasars in the VIKING survey
Creators: name: Barnett, R.
name: Warren, S. J.
name: Cross, N. J. G.
name: Mortlock, D. J.
name: Fan, X.
name: Wang, F.
name: Hewett, P. C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the results of a new, deeper, and complete search for high-redshift $6.56.5$ quasars in this field. Additional observations of the other 17 candidates, primarily DESI Legacy Survey photometry and ESO FORS2 spectroscopy, confirm that none is a quasar. This is the first complete sample from the VIKING survey, and we provide the computed selection function. We include a detailed comparison of the BMC method against two other selection methods: colour cuts and minimum-$χ^2$ SED fitting. We find that: i) BMC produces eight times fewer false positives than colour cuts, while also reaching 0.3 mag. deeper, ii) the minimum-$χ^2$ SED fitting method is extremely efficient but reaches 0.7 mag. less deep than the BMC method, and selects only one of the four known quasars. We show that BMC candidates, rejected because their photometric SEDs have high $χ^2$ values, include bright examples of galaxies with very strong [OIII]$λλ$4959,5007 emission in the $Y$ band, identified in fainter surveys by Matsuoka et al. This is a potential contaminant population in Euclid searches for faint $z>7$ quasars, not previously accounted for, and that requires better characterisation.
description: Accepted for MNRAS
Additional file 1 of Promoting parent-child relationships and preventing violence via home-visiting: a pre-post cluster randomised trial among Rwandan families linked to social protection programmes
Creators: name: Betancourt, Theresa S.
name: Jensen, Sarah K. G.
name: Barnhart, Dale A.
name: Brennan, Robert T.
name: Murray, Shauna M.
name: Yousafzai, Aisha K.
name: Farrar, Jordan
name: Kalisa Godfroid
name: Bazubagira, Stephanie M.
name: Rawlings, Laura B.
name: Wilson, Briana
name: Sezibera, Vincent
name: Kamurase, Alex
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases
subject: Computational Biology

description: Additional File 1. Adverse Events
Transportation infrastructure project cost overrun risk analysis : risk factor analysis models
Creators: name: Wu, Qing
Publisher: name: University of British Columbia
Year: 2010

description: The main purpose of this thesis is to analyze some common risk factors and to propose several useful analytical models for cost overrun risk analysis in transportation infrastructure investments. Probability models and regression models are proposed and partially (due to data insufficiency) applied using the VIHP (Vancouver Island Highway Project) data. The VIHP case study shows that cost overrun ratio increases as project sizes increase for small road/highway projects (budget < $0.25 million) and bridge/tunnel projects (budget >$0.85 million). However for road/highway projects with budgets over $0.25 million, cost overrun ratio decreases as project size increases. Using the VIHP database, results of a distribution fitting model and a Monte Carlo simulation model are compared. Compared with the distribution fitting model, the Monte Carlo simulation model is shown to underestimate both the upper bound value of project cost overrun ratio and slightly the probabilities of cost overrun. The distribution fitting model and regression model are shown to have close estimates of project costs and cost ranges at each confidence level.
Renormalized Polyakov Loops, Matrix Models and the Gross-Witten Point
Creators: name: Dumitru, Adrian
name: Lenaghan, Jonathan T.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The values of renormalized Polyakov loops in the three lowest representations of SU(3) were measured numerically on the lattice. We find that in magnitude, condensates respect the large-N property of factorization. In several ways, the deconfining phase transition for N=3 appears to be like that in the N=infinity matrix model of Gross and Witten. Surprisingly, we find that the values of the renormalized triplet loop are described by an SU(3) matrix model, with an effective action dominated by the triplet loop. Future numerical simulations with a larger number of colors should be able to show whether or not the deconfining phase transition is close to the Gross-Witten point.
description: 9 pages, 3 figures, Combined contribution to proceedings of Strong and Electroweak Matter 2004 (SEWM 2004), Helsinki, Finland, 16-19 June 2004
Effect of Hot Baryons on the Weak-Lensing Shear Power Spectrum
Creators: name: Zhan, Hu
name: Knox, Lloyd
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the impact of the intracluster medium on the weak-lensing shear power spectrum (PS). Using a halo model we find that, compared to the dark matter only case, baryonic pressure leads to a suppression of the shear PS on the order of a few percent or more for $l \gtrsim 1000$. Cooling/cooled baryons and the intergalactic medium can further alter the shear PS. Therefore, the interpretation of future precision weak lensing data at high multipoles must take into account the effects of baryons.
description: 4 pages, 3 figures
Multiple Invaded Consolidating Materials
Creators: name: Araujo, A. D.
name: Andrade, J. S.
name: Herrmann, H. J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study a multiple invasion model to simulate corrosion or intrusion processes. Estimated values for the fractal dimension of the invaded region reveal that the critical exponents vary as function of the generation number $G$, i.e., with the number of times the invasion process takes place. The averaged mass $M$ of the invaded region decreases with a power-law as a function of $G$, $M\sim G^β$, where the exponent $β\approx 0.6$. We also find that the fractal dimension of the invaded cluster changes from $d_{1}=1.887\pm0.002$ to $d_{s}=1.217\pm0.005$. This result confirms that the multiple invasion process follows a continuous transition from one universality class (NTIP) to another (optimal path). In addition, we report extensive numerical simulations that indicate that the mass distribution of avalanches $P(S,L)$ has a power-law behavior and we find that the exponent $τ$ governing the power-law $P(S,L)\sim S^{-τ}$ changes continuously as a function of the parameter $G$. We propose a scaling law for the mass distribution of avalanches for different number of generations $G$.
description: 8 pages and 16 figures
A SÁROSPATAKI JÁRÁS ELEMZÉSE TURIZMUS A FEJLŐDÉS SZOLGÁLATÁBAN
Creators: name: Ifjú, Laura
name: Szilbek, Katalin
name: Verdes, Tamás
name: Ifjú, Laura
name: Szilbek, Katalin
name: Verdes, Tamás
Publisher: name: Unknown
Year: 2015
Subjects: subject: Community/Rural/Urban Development
subject: turizmus-vendéglátás
subject: Sárospataki járás
subject: település-fejlesztés
subject: turizmusfejlesztés
subject: fejlődés
subject: foglalkoztatottság
subject: infrastruktúra
subject: borvidék
subject: fejlesztés
subject: tourism and hospitality
subject: subregion of Sárospatak
subject: settlement development
subject: tourism development
subject: employment
subject: infrastructure
subject: wineregion
subject: development

description: Munkánk célja egy adott járás turisztikai körülményeinek és lehetőségeinek feltérképezése. Ehhez kapcsolódóan még a foglalkoztatás kilátásait vettük szemügyre. A konkrét terület – a Sárospataki járás – esetünkben kiváló helyzetben van a jövőt illetően. Jelen van a tudatos tervezés és jövőorientált gondolkodás, aminek jó táptalaja talán a – más térségekhez viszonyított átmeneti – lemaradás, ugyanakkor például a természeti és kulturális adottságok gazdagsága. Ezt szem előtt tartva fogalmazunk meg javaslatokat, saját ötleteket a turizmushoz kapcsolódóan a fejlesztés eszközeiként, mint például a borvidék bejárását lehetővé tévő kisvasút (borvasút) gondolata. --------------------------------------------------------- Our work aims mapping the touristical conditions and possibilities of a subregion. In this context we have examined the expectations of employment. The selected area – the subregion of Sárospatak - in our case is in excellent position concerning the future. Conscious design and future-oriented thinking are present, for which lagging – compared to other regions – is a good breeding ground as well as the wealth of natural and cultural features. With these in mind we formulate proposals, own ideas related to the tourism as an instrument of development, such as the idea of a special railway line (wine railway), which enables the visit of the wineregion.
Soft photon theorems from CFT Ward identites in the flat limit of AdS/CFT
Creators: name: Hijano, Eliot
name: Neuenfeld, Dominik
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: S-matrix elements in flat space can be obtained from a large AdS-radius limit of certain CFT correlators. We present a method for constructing CFT operators which create incoming and outgoing scattering states in flat space. This is done by taking the flat limit of bulk operator reconstruction techniques. Using this method, we obtain explicit expressions for incoming and outgoing U(1) gauge fields. Weinberg soft photon theorems then follow from Ward identites of conserved CFT currents. In four bulk dimensions, gauge fields on AdS can be quantized with standard and alternative boundary conditions. Changing the quantization scheme corresponds to the S-transformation of SL(2,Z) electric-magnetic duality in the bulk. This allows us to derive both, the electric and magnetic soft photon theorems in flat space from CFT physics.
description: 52 pages, 5 figures, comments are welcome, v2: error corrected in eq (2.1), minor clarifications throughout the paper
Synchronization of clocks and metronomes:A perturbation analysis based on multiple timescales
Creators: name: Goldsztein, Guillermo H
name: Nadeau, Alice N
name: Strogatz, Steven H
Publisher: name: arXiv
Year: 2020
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 34C15

description: In 1665, Huygens observed that two pendulum clocks hanging from the same board became synchronized in antiphase after hundreds of swings. On the other hand, modern experiments with metronomes placed on a movable platform show that they often tend to synchronize in phase, not antiphase. Here we study both in-phase and antiphase synchronization in a model of pendulum clocks and metronomes and analyze their long-term dynamics with the tools of perturbation theory. Specifically, we exploit the separation of timescales between the fast oscillations of the individual pendulums and the much slower adjustments of their amplitudes and phases. By scaling the equations appropriately and applying the method of multiple timescales, we derive explicit formulas for the regimes in parameter space where either antiphase or in-phase synchronization are stable, or where both are stable. Although this sort of perturbative analysis is standard in other parts of nonlinear science, it has been applied surprisingly rarely in the context of Huygens's clocks. Unusual features of our approach include its treatment of the escapement mechanism, a small-angle approximation up to cubic order, and both a two- and three-timescale asymptotic analysis.
description: 15 pages, 8 figures
Sum rule for the Compton amplitude and implications for the proton-neutron mass difference
Creators: name: Gasser, J.
name: Leutwyler, H.
name: Rusetsky, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The Cottingham formula expresses the leading contribution of the electromagnetic interaction to the proton-neutron mass difference as an integral over the forward Compton amplitude. Since quarks and gluons reggeize, the dispersive representation of this amplitude requires a subtraction. We assume that the asymptotic behaviour is dominated by Reggeon exchange. This leads to a sum rule that expresses the subtraction function in terms of measurable quantities. The evaluation of this sum rule leads to $m_{QED}^{p-n}=0.58\pm 0.16\,\mbox{MeV}$.
description: 26 pages, 9 figures. Update, matches the version published in EPJC
Price setting during the coronavirus (COVID-19) pandemic
Creators: name: Henkel, Lukas
name: Wieland, Elisabeth
name: Błażejowska, Aneta
name: Conflitti, Cristina
name: Fabo, Brian
name: Fadejeva, Ludmila
name: Jonckheere, Jana
name: Karadi, Peter
name: Macias, Paweł
name: Menz, Jan-Oliver
name: Seiler, Pascal
name: Szafranek, Karol
Publisher: name: ETH Zurich
Year: 2023
Subjects: price rigidity
inflation
consumer prices
heterogeneity
Microdata
COVID-19

description: ECB Occasional Paper Series, 324
description: ISSN:1725-6534
description: ISBN:978-92-899-6153-0
The Nowcasting Lab: Live Out-of-Sample Forecasting and Model Testing
Creators: name: Kronenberg, Philipp
name: Mikosch, Heiner
name: Neuwirth, Stefan
name: Bannert, Matthias
name: Thöni, Severin
Publisher: name: ETH Zurich
Year: 2023
Subjects: Forecasting
Nowcasting
GDP
Automated
Live
Real time
info:eu-repo/classification/ddc/330
Economics

description: SSRN
Effective potential approach to hybrid synchronization transitions
Creators: name: Song, Je Ung
name: Um, Jaegon
name: Park, Jinha
name: Kahng, B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The Kuramoto model exhibits different types of synchronization transitions depending on the type of natural frequency distribution. To obtain these results, the Kuramoto self-consistency equation (SCE) approach has been used successfully. However, this approach affords only limited understanding of more detailed properties such as the stability and finite size effect. Here, we extend the SCE approach by introducing an effective potential, that is, an integral version of the SCE. We examine the landscape of this effective potential for second-order, first-order, and hybrid synchronization transitions in the thermodynamic limit. In particular, for the hybrid transition, we find that the minimum of effective potential displays a plateau across the region in which the order parameter jumps. This result suggests that the effective free energy can be used to determine a type of synchronization transition. For finite systems, the effective potential contains local minima at which the system can be trapped. Using numerical simulations, we determine the stability of the system as a function of system size and simulation time.
description: 12 pages, 13 figures
The influence of post-glacial recolonization and contemporary stream network on the evolution of genetic diversity within species : an examination of microsatellite DNA variation in rainbow trout (Oncorhynchus mykiss)
Creators: name: Tamkee, Patrick
Publisher: name: University of British Columbia
Year: 2010

description: Understanding the relative influence of historical and contemporary factors shaping patterns of genetic diversity is a major challenge in population and conservation biology. Patterns of genetic diversity were examined in rainbow trout throughout British Columbia to address the roles of historical isolation, postglacial dispersal, and local contemporary geomorphic features in structuring patterns of genetic variation and differentiation observed in nature. Microsatellite DNA was useful in detecting patterns of historical isolation and post glacial recolonization, showing clines of genetic variation as populations were studied in an orderly manner moving away from the putative refugia. Patterns of isolation by distance were observed among drainages closest to each refuge and were absent among populations at the periphery of the species’ range suggesting the existence of clines in migration drift equilibrium. Clines in genetic variation and isolation by distance were not observed in coastal populations and may result from ongoing gene flow which would prevent the detection of such trends. On a broad geographic scale, rainbow trout populations were structured into major regions and further structured within each major region into smaller watersheds and drainages based on hydrological topography. The influences of elevation, number of connections between streams, fluvial distance, migration barriers and streamllake order were important in shaping observed patterns of genetic diversity among rainbow trout populations. Anadromous and fluvial populations generally displayed higher levels of genetic variation and lower levels of differentiation than lacustrine populations. Generally, within drainage, high levels of dispersal and gene flow were observed between geographically proximate and contiguous lakes. Streamllake order was a better predictor of genetic variation than lake surface area and perimeter. Although founder events and postglacial dispersal likely played large roles in determining the broad scale patterns of genetic diversity in rainbow trout, the results suggest that contemporary factors can strongly modulate historical patterns. To properly plan for the conservation of such species, it is necessary to understand the nested nature of variation exhibited by rainbow trout populations and how important stream hydrology is because it demonstrates the importance of dispersal corridors in much the same way as land formations do for terrestrial vertebrates.
A Group-Based Yule Model for Bipartite Author-Paper Networks
Creators: name: Goldstein, Michel L.
name: Morris, Steven A.
name: Yen, Gary G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: This paper presents a novel model for author-paper networks, which is based on the assumption that authors are organized into groups and that, for each research topic, the number of papers published by a group is based on a success-breeds-success model. Collaboration between groups is modeled as random invitations from a group to an outside member. To analyze the model, a number of different metrics that can be obtained in author-paper networks were extracted. A simulation example shows that this model can effectively mimic the behavior of a real-world author-paper network, extracted from a collection of 900 journal papers in the field of complex networks.
description: 13 pages (preprint format), 7 figures
New Methods for Identifying Lyman Continuum Leakers and Reionization-Epoch Analogues
Creators: name: Katz, Harley
name: Ďurovčíková, Dominika
name: Kimm, Taysun
name: Rosdahl, Joki
name: Blaizot, Jeremy
name: Haehnelt, Martin G.
name: Devriendt, Julien
name: Slyz, Adrianne
name: Ellis, Richard
name: Laporte, Nicolas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Identifying low-redshift galaxies that emit Lyman Continuum radiation (LyC leakers) is one of the primary, indirect methods of studying galaxy formation in the epoch of reionization. However, not only has it proved challenging to identify such systems, it also remains uncertain whether the low-redshift LyC leakers are truly "analogues" of the sources that reionized the Universe. Here, we use high-resolution cosmological radiation hydrodynamics simulations to examine whether simulated galaxies in the epoch of reionization share similar emission line properties to observed LyC leakers at $z\sim3$ and $z\sim0$. We find that the simulated galaxies with high LyC escape fractions ($f_{\rm esc}$) often exhibit high O32 and populate the same regions of the R23-O32 plane as $z\sim3$ LyC leakers. However, we show that viewing angle, metallicity, and ionisation parameter can all impact where a galaxy resides on the O32-$f_{\rm esc}$ plane. Based on emission line diagnostics and how they correlate with $f_{\rm esc}$, lower-metallicity LyC leakers at $z\sim3$ appear to be good analogues of reionization-era galaxies. In contrast, local [SII]-deficient galaxies do not overlap with the simulated high-redshift LyC leakers on the SII-BPT diagram; however, this diagnostic may still be useful for identifying leakers. We use our simulated galaxies to develop multiple new diagnostics to identify LyC leakers using IR and nebular emission lines. We show that our model using only [CII]$_{\rm 158μm}$ and [OIII]$_{\rm 88μm}$ can identify potential leakers from non-leakers from the local Dwarf Galaxy Survey. Finally, we apply this diagnostic to known high-redshift galaxies and find that MACS1149_JD1 at $z=9.1$ is the most likely galaxy to be actively contributing to the reionization of the Universe.
description: 18 pages, 11 figures, Accepted to MNRAS
Világvallások gazdasági tanítása
Creators: name: Győri, Zsuzsanna
name: Győri, Zsuzsanna
Publisher: name: Unknown
Year: 2015
Subjects: subject: Political Economy
subject: Public Economics
subject: értékvezérelt vállalatvezetés
subject: keresztény értékrend
subject: buddhista közgazdaságtan
subject: alternatív közgazdaságtan
subject: gazdaságetika
subject: values-driven business
subject: Christian values
subject: Buddhist economics
subject: Alternative economics
subject: business ethics

description: Az alternatív gazdaságtan követői közül sokan gondolják úgy, hogy mivel a nyugati keresztény gondolkodás a kapitalizmus egyik alapvető ideológiai forrása, így ez az értékrend tehető felelőssé a hagyományos közgazdaságtan problémáiért, kudarcáért is. Így többen a keleti vallási értékekben keresik a közgazdaságtan megújításának lehetőségét, köztük a buddhista közgazdaságtan legfontosabb kutatója E. F. Schumacher, aki „A kicsi szép” című művében fejtette ki a keleti gazdasági gondolkodás etikai előnyeit. De valóban más-e a keleti gazdasági tanítás? És valóban a keresztény értékekből származnak-e nyugati gazdaság problémái? Véleményem szerint a hagyományos közgazdaságtan elméleti és gyakorlati kudarcainak oka nem az, hogy a nyugati gazdasági gondolkodás a zsidó-keresztény értékekből – és nem más vallások értékeiből – került levezetésre, hanem hogy azoktól, és az erkölcsi parancsoktól független tudományként próbálta és próbálja definiálni önmagát. A világvallások gazdasági tanítása nem is áll olyan messze egymástól, a gazdaságetika legfontosabb alapelvei éppúgy levezethetőek a keresztény filozófiából, mint a buddhizmusból. -------------------------------------------------- Christian ideology is one of the fundaments of capitalism that is why many alternative economists think that Christian values are responsible for the problems and pitfalls of mainstream economics. They search for the renewal possibility in the Eastern religion values, e.g. E. F. Schumacher explains the ethical advantages of the Eastern religions in his work ‘Small is beautiful’. Is the Eastern economic message really something different? And do the problems of the Western economics originate from the Christian values? In my opinion Christian-Jewish ideology is not the real cause of mainstream economics’ theoretic and practical failures. The very problem is that it defines itself as a value-neutral, independent and quasi-natural science. The economic messages of the major religions of the world are not far from each other. The principles of business ethics and alternative economics can be deduced as well from the Christian philosophy as from the Eastern one.
Additional file 13 of Host gill attachment causes blood-feeding by the salmon louse (Lepeophtheirus salmonis) chalimus larvae and alters parasite development and transcriptome
Creators: name: Heggland, Erna Irene
name: Dondrup, Michael
name: Nilsen, Frank
name: Eichner, Christiane
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 13: Figure S4. Expression of ferritins, LsHSCARB and a lipid transporter gene.