cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The politics behind the eu cohesion policy
Creators: name: Teixeira, Nelson
Publisher: name: University of British Columbia
Year: 2009

description: This study explores the importance of cohesion policy to the present and future of the European Union. The goal of cohesion policy is to reduce the economic and social disparities between the richer and poorer member states of the European Union. Cohesion policy provides the 'smaller powers' with hundreds of millions of euros worth of regional aid annually despite constant opposition from the suppliers or donors of this 'string-less cash', the larger and/or wealthier members of the European Union. Given such controversy, the central question of this thesis asks: why do the 'smaller powers' receive so much regional aid and financial redistribution in the form of cohesion policy from the larger and/or wealthier members of the EU? Traditional International Relations theory as well as Theories on European integration has thus far been insufficient in accounting for this central question. This thesis seeks to move beyond current theoretical literature pertaining to European integration and the role of cohesion policy within it. This paper has two major findings. The first argument contends that cohesion policy acts as a 'mechanism of solidarity' thereby promoting the long-term health and growth of the EU. The second argument posits that cohesion policy guarantees a greater role for the Commission, the driving force behind cohesion policy. It is only through the mechanism of solidarity principle and the role of the Commission that one can understand why the coalition of smaller receives so much regional aid in the form of cohesion policy from the larger and/or wealthier members of the E U without seemingly providing anything directly in return. This conclusion is arrived at through an examination of three major case studies: Delors I (1987), Delors U (1992), and Agenda 2000. These 3 cases represent the most significant steps in the process of building the cohesion policy in general and the structural funds in particular.
Nucleosynthesis of Fe60 in massive stars
Creators: name: Limongi, M.
name: Chieffi, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss at some extent the production of Fe60 in massive stars in the range between 11 and 120 Msun both in the hydrostatic and explosive stages. We also compare the Fe60/Al26 gamma-ray line flux ratio obtained according to the present calculations to the detected value reported by INTEGRAL/SPI.
description: 8 pages, 2 figures, in proceedings of Astronomy with Radioactivities V, Clemson University, September 5-9, 2005, to appear in New Astronomy Reviews. Revised Version
Perceived Competence and Transition Experience of New Graduate Filipino Nurses
Creators: name: Oducado, Ryan Michael
Publisher: name: figshare
Year: 2020
Subjects: subject: 111099 Nursing not elsewhere classified
subject: FOS: Health sciences

description: Recruitment and hiring of new graduate nurses is seen as a potential strategy to mitigate the problem of nurse shortage. However, previous studies disclosed that new graduate nurses are inadequately prepared to enter practice and experience transition difficulties. This study aimed to determine the perceived competence and transition experience of new graduate Filipino nurses. Seventy-nine conveniently chosen new graduate nurses were surveyed in this descriptive cross-sectional research. Self-administered instruments were used to gather data. Descriptive statistics, Mann–Whitney U test, and Kruskal–Wallis test were the statistical tools employed. Results indicated that new graduate nurses had a high level of self-reported fundamental nursing skills (M= 7.99) and core competence (M= 8.16), although areas needing improvement were identified. There were no significant differences in the perceived competence based on the length of experience, year graduated, area of assignment, sex, type of school graduated, CPD participation, and hospital bed capacity (p> .05). The major difficulty experienced by new graduates during their transition was related to changes in role expectations (72.2%). Majority expressed the need for increased support during their transition (83.5%). The most satisfying aspects of their working environment were ongoing learning (81%) and peer support (74.7%), while the least satisfying was the negative nursing work environment (55.7%). New graduate nurses are equipped with the necessary nursing skills and core competencies. However, there are still gaps and areas needing improvement that should be addressed and supported to assist them in their transition to the world of professional nursing practice. Follow up, feedback, mentoring, and preceptorship are beneficial to enhance the competencies of new graduate nurses and facilitate their successful transition into the nursing workforce.
title: Front Matter, Table of Contents, Preface, Conference Organization
Creators: name: Meka, Raghu
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2025
Subjects: subject: Front Matter
subject: Table of Contents
subject: Preface
subject: Conference Organization
subject: Mathematics of computing
subject: Theory of computation

description: Front Matter, Table of Contents, Preface, Conference Organization
description: LIPIcs, Vol. 325, 16th Innovations in Theoretical Computer Science Conference (ITCS 2025), pages 0:i-0:xxii
Jank and Meyer's Guiding Questions for Didaktik Translated and Adapted for Higher Edcuation
Creators: name: Sheridan, Nathalie
Publisher: name: figshare
Year: 2020
Subjects: Education

description: This is an adaptation of a set of questions Jank and Meyer (Jank, W., & Meyer, H. (2019). Didaktische Modelle (13th ed.). Berlin: Cornelsen Verlag GmbH.) suggested are at the core of Didaktik (pedagogy). I realised that these might be helpful to support colleagues teaching in higher education to adapt their teaching for the 2020/21 academic year with predominantly online or hybrid teaching. These questions can be useful as guiding principles for curriculum design or redesign
A note on projective modules over real affine algebras
Creators: name: Keshari, Manoj Kumar
Publisher: name: arXiv
Year: 2004
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 13C10

description: Let A be an affine algebra over the field of real numbers of dimension d. Let f \in A be an element not belonging to any real maximal ideal of A. Let P be a projective A-module of rank \geq d-1. Let (a,p) \in A_f \oplus P_f be a unimodular element. Then the projective A_f module Q=A_f \oplus P_f/(a,p)A_f is extended from A.
description: 11 pages
Migração e desigualdade regional de renda: uma análise do estado de Minas Gerais comparado com o Brasil
Creators: name: Vieira Filho, Jose Eustaquio Ribeiro
name: Vieira Filho, Jose Eustaquio Ribeiro
Publisher: name: Unknown
Year: 2006
Subjects: subject: Community/Rural/Urban Development
subject: Migrants
subject: Earning equations
subject: Inequality
subject: Income distribution

description: The present work investigates whether Brazilian migrants (individuals that live outside their home state) income is, on average, at the level or superior to non-migrant workers. We also present a comparative analysis of income distribution between migrant and non-migrant workers for Brazil and Minas Gerais County specifically in the years of 2002 and 2004. In order to do this we employed a methodology based on two main aspects; earning equations and data measuring inequality and poverty rates obtained from the Pesquisa Nacional por Amostra de Domicilios institute (PNAD). The results obtained here indicate that migrants form a group positively selected displaying an average income higher than those of the non-migrant group. Nevertheless we found no evidence showing that the income differential between migrants and non-migrants contributes to a significant increase in inequality rates in the period studied here. A decrease in the estimated coefficient - shows, assuming that the migratory flow remains constant, a decline in the importance of the migrant in explaining income variation between individuals and that this decline could be prompting a reduction in income inequality rate levels.
Monodromy of the Hitchin Map over Hyperelliptic Curves
Creators: name: Copeland, D. Jeremy
Publisher: name: arXiv
Year: 2004
Subjects: subject: Geometric Topology (math.GT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 14D20; 20F38

description: In this paper, we study the monodromy of the Hitchin fibration for rank 2 vector bundles over hyperelliptic curves. We reduce the problem to studying a surface braid group generalization of the classical Burau representation, and give a combinatorial method for computing this representation.
description: 40 pages, 26 figures
Re-evaluating phoneme frequencies
Creators: name: Macklin-Cordes, Jayden L.
name: Round, Erich R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: Physics and Society (physics.soc-ph)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: J.5

description: Causal processes can give rise to distinctive distributions in the linguistic variables that they affect. Consequently, a secure understanding of a variable's distribution can hold a key to understanding the forces that have causally shaped it. A storied distribution in linguistics has been Zipf's law, a kind of power law. In the wake of a major debate in the sciences around power-law hypotheses and the unreliability of earlier methods of evaluating them, here we re-evaluate the distributions claimed to characterize phoneme frequencies. We infer the fit of power laws and three alternative distributions to 166 Australian languages, using a maximum likelihood framework. We find evidence supporting earlier results, but also nuancing them and increasing our understanding of them. Most notably, phonemic inventories appear to have a Zipfian-like frequency structure among their most-frequent members (though perhaps also a lognormal structure) but a geometric (or exponential) structure among the least-frequent. We compare these new insights the kinds of causal processes that affect the evolution of phonemic inventories over time, and identify a potential account for why, despite there being an important role for phonetic substance in phonemic change, we could still expect inventories with highly diverse phonetic content to share similar distributions of phoneme frequencies. We conclude with priorities for future work in this promising program of research.
description: 29pp (3 figures, 3 tables). This article has been provisionally accepted for publication (Frontiers in Psychology, Language Sciences). Supplementary information, data and code available at http://doi.org/10.5281/zenodo.3886212
Chromodynamic multi-relaxation time lattice Boltzmann scheme for fluids with density difference
Creators: name: Spendlove, James
name: Xu, Xu
name: Halliday, Oliver J.
name: Schenkel, Torsten
name: Halliday, Ian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We develop, after Dellar (P. J. Dellar, Phys. Rev. E. 65, 036309 (2002), J. Comput. Phys. 190, pp351 (2003)), a multiple-relaxation time (MRT), chromodynamic, multi-component lattice Boltzmann equation (MCLBE) scheme for simulation of isothermal, immiscible fluid flow with a density contrast. It is based on Lishchuk's method (J. U. Brackbill, D. B. Kothe and C. Zemach, J. Comp. Phys. 100, 335-354 (1992), S. V. Lishchuk, C. M. Care and I. Halliday, Phys. Rev. E. 67(3), 036701(2), (2003)) and the segregation of d'Ortona et al. (U. D'Ortona, D. Salin, M. Cieplak, R. B. Rybka and J. R. Banavar Phys. Rev. E. 51, 3718, (1995)). We focus on fundamental model verifiability but do relate some of our data to that from previous approaches, due to Ba et al. (Y. Ba, H. Liu, Q. Li, Q. Kang and J. Sun, Phys. Rev. E 94, 023310 (2016)) and earlier Liu et al. (H. Liu, A. J. Valocchi and Q. Kang, Phys. Rev. E 85, 046309 (2012)), who pioneered large density difference chromodynamic MCLBE and showed the practical benefits of a MRT collision model. Specifically, we test the extent to which chromodynamic MCLBE MRT schemes comply with the kinematic condition of mutual impenetrability and the continuous traction condition by developing analytical benchmarking flows. We conclude that our data, taken with those of Ba et al., verify the utility of MRT chromodynamic MCLBE.
description: submitted to PRE
Perfil das cooperativas de crédito mútuo do estado de Minas Gerais
Creators: name: Bressan, Valéria Gama Fully
name: Braga, Marcelo Jose
name: Bressan, Valéria Gama Fully
name: Braga, Marcelo Jose
Publisher: name: Unknown
Year: 2006
Subjects: subject: Financial Economics
subject: Credit unions
subject: Microfinance
subject: Minas Gerais

description: Given the relevance of the credit unions at national and world level, the objective of this work was to describe the profile of the financial cooperatives from the Brazilian state of Minas Gerais. This study is based on data collected in the period of May to June of 2004, and the sample of 18.85% of the population was selected to supply data. The results indicate that the cooperatives were, on average, 16 years old; 92% of the associates that requested loans were assisted; the delinquent loans level were of 22.34%; and older cooperatives established smaller interest rates than the new ones. The managers had appropriate perception of the true meaning of a cooperative and they agreed with the cooperative principle of voluntary and open membership. In general, credit unions serve their members supplying services with smaller costs than the bank system, thus, they provide financial service to low-income people accomplishing their role in the microfinance system.
A systematic $1/c$-expansion of form factor sums for dynamical correlations in the Lieb-Liniger model
Creators: name: Granet, Etienne
name: Essler, Fabian H. L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We introduce a framework for calculating dynamical correlations in the Lieb-Liniger model in arbitrary energy eigenstates and for all space and time, that combines a Lehmann representation with a $1/c$ expansion. The $n^{\rm th}$ term of the expansion is of order $1/c^n$ and takes into account all $\lfloor \tfrac{n}{2}\rfloor+1$ particle-hole excitations over the averaging eigenstate. Importantly, in contrast to a 'bare' $1/c$ expansion it is uniform in space and time. The framework is based on a method for taking the thermodynamic limit of sums of form factors that exhibit non integrable singularities. We expect our framework to be applicable to any local operator. We determine the first three terms of this expansion and obtain an explicit expression for the density-density dynamical correlations and the dynamical structure factor at order $1/c^2$. We apply these to finite-temperature equilibrium states and non-equilibrium steady states after quantum quenches. We recover predictions of (nonlinear) Luttinger liquid theory and generalized hydrodynamics in the appropriate limits, and are able to compute sub-leading corrections to these.
description: 78 pages; corresponds to published version
Estilos gerenciais e eficácia administrativa na produção de café
Creators: name: Vale, Sonia Maria Leite Ribeiro Do
name: Teixeira, Marcelo Brandao
name: Sant'Anna, Julio Cezar Oliveira
name: Vale, Sonia Maria Leite Ribeiro Do
name: Teixeira, Marcelo Brandao
name: Sant'Anna, Julio Cezar Oliveira
Publisher: name: Unknown
Year: 2006
Subjects: subject: Crop Production/Industries
subject: Managerial styles
subject: Managerial effectiveness
subject: Managerial grid
subject: Coffee production

description: The objective of this article was to analyze the managerial styles in coffee farmers of two regions in Minas Gerais State, Brazil (Sul and Zona da Mata), and the difficulties which can be compromising the administrative effectiveness. Primary data were collected from forms applied to 56 coffee farmers, in the harvest period 2003/2004. To analyze the relation between the dominant managerial styles and the reached economic and technical performances in the activity, the analysis of simple correlation was used (coefficient of Pearson). Regressions were estimated to indicate as the situational variables had intervened in the styles. Among the main results it is important to point out that the producers, in general, presented as dominant managerial style 9,9, which represents the versatile and intent manager to the changes of the environment. The situational variables intervened, significantly, in the managerial styles in both regions, of differentiated form. Also positive correlations between the dominant managerial styles were observed and the physical production and total gross income in the production of coffee in the Zone of Mata region. This can be an indication that the versatile style is related to a good economic and technical performance in the activity. The results of this research can be considered reference to reach managerial effectiveness in the production of coffee in the studied regions.
A Review on Scope, Study & Need of Setup Time Reduction for Conveyor Pulley Manufacturing
Creators: name: Samvatsar, Kaustubh
Publisher: name: figshare
Year: 2020
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: A systematic approach is essential for modeling and determination of optimum operating conditions which helps in process quality improvement. Moreover it attempts to provide the user with flexibility to adopt appropriate techniques based on their inherent potential. The designed solutions considering desired production requirements for intended studies can be helpful in increasing the productivity. It can be achieved by adopting lean principles and standardized processes which thereby leading to fulfillment of customer needs. The present study encompasses the different techniques for a case of set-up time reduction of conveyor pulley manufacturing. Five different techniques and a specific Mechatronics approach are considered.
Transmissão de preços na cadeia de carne suína: uma aplicação para preços de São Paulo
Creators: name: Weydmann, Celso Leonardo
name: Seabra, Fernando
name: Weydmann, Celso Leonardo
name: Seabra, Fernando
Publisher: name: Unknown
Year: 2006
Subjects: subject: Demand and Price Analysis
subject: Price transmission
subject: Pork chain
subject: Volatility

description: Changes in the pork chain bring about the discussion whether the wholesale sector has the leadership of price transmission and also if prices are efficient market indicators. The paper aims to identify what segment is the price leader in the pork chain and also to characterize the price volatility considering producer, wholesale and retail prices for the state of São Paulo between 1995 and 2005. The data analysis was conducted by estimating a VAR model which included an ARCH process for measuring price volatility. A Granger causality test was also implemented to check the price direction transmission. The results pointed out that price transmission occurs from wholesale to producer sectors and also that the price conditional variance for the wholesale sector is transmitted to producer and retail prices.
Food-related decision-making and activities of younger, childless, dual-earner couples living in Vancouver
Creators: name: Ristovski-Sluijepcevic, Svetlana
Publisher: name: University of British Columbia
Year: 2009

description: Most studies of family food practices were conducted over a decade ago and focused on families with children where women were economically dependent on their husbands. According to Statistics Canada, however, families without children constitute a significant proportion of Canadian families, many of whom are dual-earner. The purpose of this study was to explore the food-related decision-making and activities of younger, childless, dual-earner, heterosexual couples living in Vancouver. A qualitative research design was used. Data was collected from each of the partners via one-week food diaries and semi-structured, audio-taped interviews, and analyzed via iterative process methods commonly used in qualitative research. Construedvist assumptions about the social world were used as resources for analytical decisions. The three main areas of interest were food provision, health and nutrition, and commensality. In all areas, couples demonstrated a diversity of patterns. The theme communicated by both women and men was equality in food provision, even though some gender differences about gender-role ideals existed. The strategies for achieving equality varied. The two most prevalent strategies were the "specialization" (with the substrategies "traditional trade-off and "role reversal") and "sharing it all" (with the substrategies "rotating tasks" and "each their own"). With regards to health and nutrition, each participant's healthy eating approach was shaped by their unique life-course experiences. Upon cohabitation, participants' healthy eating values and approaches were re-examined. Healthy eating negotiations varied among couples, such that some couples developed both congruent values and approaches, other couples developed congruent values but maintained different approaches, and one couple had both different values and approaches. In a broader context, food was a significant part of the identity of some couples, but for others it was not. These findings differ from previous findings about families with children. Therefore, childless couples differ from families with children in at least 3 different food-related areas. The implications of these findings are that, with regards to research, we need to focus food-related research on families other than the nuclear family with children. Childless couples also showed differences among themselves, indicating that in practice settings practitioners can avoid generalizing food experiences by asking clients specific questions about their own, every-day experiences with food at home.
Cotunneling Spectroscopy in Few-Electron Quantum Dots
Creators: name: Zumbuhl, D. M.
name: Marcus, C. M.
name: Hanson, M. P.
name: Gossard, A. C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Few-electron quantum dots are investigated in the regime of strong tunneling to the leads. Inelastic cotunneling is used to measure the two-electron singlet-triplet splitting above and below a magnetic field driven singlet-triplet transition. Evidence for a non-equilibrium two-electron singlet-triplet Kondo effect is presented. Cotunneling allows orbital correlations and parameters characterizing entanglement of the two-electron singlet ground state to be extracted from dc transport.
description: related papers available at http://marcuslab.harvard.edu
The decline of astronomical research in Venezuela
Creators: name: Sanchez, Nestor
Publisher: name: arXiv
Year: 2020
Subjects: subject: Digital Libraries (cs.DL)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: During the last 15 years the number of astronomy-related papers published by scientists in Venezuela has been continuously decreasing, mainly due to emigration. If rapid corrective actions are not implemented, Venezuelan astronomy could disappear.
description: 7 pages including 1 table and 2 figures. Comment published on Nature Astronomy. This is the author version, the published version is available at the Shareedit link https://rdcu.be/b6aWp
Surface state scattering by adatoms on noble metals
Creators: name: Lounis, Samir
name: Mavropoulos, Phivos
name: Dederichs, Peter H.
name: Blügel, Stefan
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: When surface state electrons scatter at perturbations, such as magnetic or nonmagnetic adatoms or clusters on surfaces, an electronic resonance, localized at the adatom site, can develop below the bottom of the surface state band for both spin channels. In the case of adatoms, these states have been found very recently in scanning tunneling spectroscopy experiments\cite{limot,olsson} for the Cu(111) and Ag(111) surfaces. Motivated by these experiments, we carried out a systematic theoretical investigation of the electronic structure of these surface states in the presence of magnetic and non-magnetic atoms on Cu(111). We found that Ca and all 3$d$ adatoms lead to a split-off state at the bottom of the surface band which is, however, not seen for the $sp$ elements Ga and Ge. The situation is completely reversed if the impurities are embedded in the surface: Ga and Ge are able to produce a split-off state whereas the 3$d$ impurities do not. The resonance arises from the s-state of the impurities and is explained in terms of strength and interaction nature (attraction or repulsion) of the perturbing potential.
description: 6 pages, 5 figures
Perturbation Theory for Path Integrals of Stiff Polymers
Creators: name: Kleinert, H.
name: Chervyakov, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The wormlike chain model of stiff polymers is a nonlinear $σ$-model in one spacetime dimension in which the ends are fluctuating freely. This causes important differences with respect to the presently available theory which exists only for periodic and Dirichlet boundary conditions. We modify this theory appropriately and show how to perform a systematic large-stiffness expansions for all physically interesting quantities in powers of $L/ξ$, where $L$ is the length and $ξ$ the persistence length of the polymer. This requires special procedures for regularizing highly divergent Feynman integrals which we have developed in previous work. We show that by adding to the unperturbed action a correction term ${\cal A}^{\rm corr}$, we can calculate all Feynman diagrams with Green functions satisfying Neumann boundary conditions. Our expansions yield, order by order, properly normalized end-to-end distribution function in arbitrary dimensions $d$, its even and odd moments, and the two-point correlation function.
Correct and Control Complex IoT Systems: Evaluation of a Classification for System Anomalies
Creators: name: Niedermaier, Sina
name: Heisse, Stefan
name: Wagner, Stefan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: In practice there are deficiencies in precise interteam communications about system anomalies to perform troubleshooting and postmortem analysis along different teams operating complex IoT systems. We evaluate the quality in use of an adaptation of IEEE Std. 1044-2009 with the objective to differentiate the handling of fault detection and fault reaction from handling of defect and its options for defect correction. We extended the scope of IEEE Std. 1044-2009 from anomalies related to software only to anomalies related to complex IoT systems. To evaluate the quality in use of our classification a study was conducted at Robert Bosch GmbH. We applied our adaptation to a postmortem analysis of an IoT solution and evaluated the quality in use by conducting interviews with three stakeholders. Our adaptation was effectively applied and interteam communications as well as iterative and inductive learning for product improvement were enhanced. Further training and practice are required.
description: Submitted to QRS 2020 (IEEE Conference on Software Quality, Reliability and Security)
Geometry and Complexity of Path Integrals in Inhomogeneous CFTs
Creators: name: Caputa, Pawel
name: MacCormack, Ian
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this work we develop the path integral optimization in a class of inhomogeneous 2d CFTs constructed by putting an ordinary CFT on a space with a position dependent metric. After setting up and solving the general optimization problem, we study specific examples, including the Möbius, SSD and Rainbow deformed CFTs, and analyze path integral geometries and complexity for universal classes of states in these models. We find that metrics for optimal path integrals coincide with particular slices of $AdS_3$ geometries, on which Einstein's equations are equivalent to the condition for minimal path integral complexity. We also find that while leading divergences of path integral complexity remain unchanged, constant contributions are modified in a universal, position dependent manner. Moreover, we analyze entanglement entropies in inhomogeneous CFTs and show that they satisfy Hill's equations, which can be used to extract the energy density consistent with the first law of entanglement. Our findings not only support comparisons between slices of bulk spacetimes and circuits of path integrations, but also demonstrate that path integral geometries and complexity serve as a powerful tool for understanding the interesting physics of inhomogeneous systems.
description: 45 pages, 1 figure
Appendices and Python code of Bachlor end project
Creators: name: Vitale, Luigi
Publisher: name: figshare
Year: 2020
Subjects: Health Care

description: The 'FinalBEP-LuigiVitale-Appedices' file contains the description of all features, the necessary survey statements and the percentage of missing values. The 'FinalBEP-LuigiVitale-Code' file contains all code created and used in the study.
An Infrared Spectroscopic Sequence of M, L and T Dwarfs
Creators: name: Cushing, Michael C.
name: Rayner, John T.
name: Vacca, William D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a 0.6-4.1 micron spectroscopic sequence of M, L, and T dwarfs. The spectra have R~2000 from 0.9 to 2.4 microns and R=2500-200 from 2.9 to 4.1 microns. These new data nearly double the number of L and T dwarfs that have reported L-band spectra. The near-infrared spectra are combined with previously published red-optical spectra to extend the wavelength coverage to ~0.6 microns. Prominent atomic and molecular absorption features are identified including neutral lines of Al, Fe, Mg, Ca, Ti, Na, and K and 19 new weak CH_4 absorption features in the H-band spectra of mid- to late-type T dwarfs. In addition, we detect for the first time the 0-0 band of the A ^4Π- X ^4Σ^- transition of VO at ~1.06 microns in the spectra of L dwarfs and the P and R branches of the ν_3 band of CH_4 in the spectrum of a T dwarf. The equivalent widths of the refractory atomic features all decrease with increasing spectral type and are absent by a spectral type of ~L0, except for the 1.189 micron Fe I line which persists to at least ~L3. We compute the bolometric luminosities of the dwarfs in our sample with measured parallaxes and find good agreement with previously published results that use L'-band photometry to account for the flux emitted from 2.5 to 3.6 microns. Finally, 2MASS J2224381-0158521 (L4.5) has an anomalously red spectrum and the strongest Δν=+2 CO bands in our sample. This may be indicative of unusually thick condensate clouds and/or low surface gravity.
description: 25 pages, 20 figures, 10 tables, accepted for publication in ApJ
Tensor renormalization group approach to four-dimensional complex $ϕ^4$ theory at finite density
Creators: name: Akiyama, Shinichiro
name: Kadoh, Daisuke
name: Kuramashi, Yoshinobu
name: Yamashita, Takumi
name: Yoshimura, Yusuke
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Tensor network is an attractive approach to field theory with negative sign problem. The complex $ϕ^4$ theory at finite density is a test bed for numerical algorithms to verify their effectiveness. The model shows a characteristic feature called the Silver Blaze phenomenon associated with the sign problem in the large volume limit at low temperature. We analyze the four-dimensional model employing the anisotropic tensor renormalization group algorithm. We find a clear signal of the Silver Blaze phenomenon on a large volume of $V=1024^4$, which implies that the tensor network approach is effective even for four-dimensional field theory beyond two dimensions.
description: 11 pages, 6 figures
Multifractality in the stock market: price increments versus waiting times
Creators: name: Oswiecimka, P.
name: Kwapien, J.
name: Drozdz, S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: By applying the multifractal detrended fluctuation analysis to the high-frequency tick-by-tick data from Deutsche Börse both in the price and in the time domains, we investigate multifractal properties of the time series of logarithmic price increments and inter-trade intervals of time. We show that both quantities reveal multiscaling and that this result holds across different stocks. The origin of the multifractal character of the corresponding dynamics is, among others, the long-range correlations in price increments and in inter-trade time intervals as well as the non-Gaussian distributions of the fluctuations. Since the transaction-to-transaction price increments do not strongly depend on or are almost independent of the inter-trade waiting times, both can be sources of the observed multifractal behaviour of the fixed-delay returns and volatility. The results presented also allow one to evaluate the applicability of the Multifractal Model of Asset Returns in the case of tick-by-tick data.
description: Physica A, in print
Mathematical Modeling of Acoustic Signals Generated During Gas Tungsten Arc Welding Process
Creators: name: Samvatsar, Kaustubh
Publisher: name: figshare
Year: 2020
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: Adoption of alternative advanced approaches for monitoring the ongoing welding can impart a transcendental process-control and can worthily substantiate the regulation of produced weld quality. Acoustic emission analysis, being a highly effective technology has paved way by facilitating the investigation of defects while operation is going on. Essential precise quantification has been carried out for inducing interrelationship of the response variables with the input parameters to predict further behavior of weld and rectification of these process parameters so that unintended defects during gas tungsten arc welding (GTAW) can be minimized. To verify the adequacy and agreeability of designed model, a corroborating evaluation has been performed
Fault-tolerant quantum computation with long-range correlated noise
Creators: name: Aharonov, Dorit
name: Kitaev, Alexei
name: Preskill, John
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We prove a new version of the quantum accuracy threshold theorem that applies to non-Markovian noise with algebraically decaying spatial correlations. We consider noise in a quantum computer arising from a perturbation that acts collectively on pairs of qubits and on the environment, and we show that an arbitrarily long quantum computation can be executed with high reliability in D spatial dimensions, if the perturbation is sufficiently weak and decays with the distance r between the qubits faster than 1/r^D.
description: 4 pages
Analysis of Variance for Surface Roughness Produced During Single Point Incremental Forming Process
Creators: name: Samvatsar, Kaustubh
Publisher: name: figshare
Year: 2020
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: Attaining required surface roughness is predominantly important in case of any sheet metal component. Single point incremental forming (SPIF) is one of such processes used for stepwise forming of sheet component directed and controlled by a pre-defined computer aided program for obtaining desired geometry. To investigate the significance of design or input parameters on the characteristic and generating output of the response variables, analysis of variance (ANOVA) has been performed. It also gives a clear depiction of the contribution of parameters on generating the required response. Thus, a campaign of experiments with its corresponding statistical analysis has been carried. Response surface methodology is successfully applied for analyzing the effect of variation in process parameters like spindle speed variation, wall angle or incremental step on surface roughness. By this attempt, augmentation in the possibility of improved combination of process parameters can prolifically conduce to minimum surface roughness.
Hawking radiation particle spectrum of a Kerr-Newman black hole
Creators: name: Foo, Joshua
name: Good, Michael R. R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Charged, rotating Kerr-Newman black holes represent the most general class of asymptotically flat black hole solutions to the Einstein-Maxwell equations of general relativity. Here, we consider a simplified model for the Hawking radiation produced by a Kerr-Newman black hole by utilising a (1+1)-dimensional accelerated boundary correspondence (i.e. a flat spacetime mirror trajectory) in Minkowski spacetime. We derive the particle spectrum and its late-time thermal distribution which reduces to the Kerr, Reissner-Nordström and Schwarzschild cases in the appropriate limits. We also compute the particle spectrum of the extremal Kerr-Newman system and the total energy emitted.
description: 7 pages, 7 figures
The regularized Stokeslets method applied to the three-sphere swimmer model
Creators: name: Lengler, Henrique N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We investigate the applicability of the Method of Regularized Stokeslets (MRS) in the simulation of micro-swimmers at low Reynolds number. The chosen model for the study is the well-known three linked spheres swimmer. We compare our results with the lattice Boltzmann method, multiparticle collision dynamics, a numerical solution of the Oseen tensor equation and an analytical solution, all taken from Earl $\textit{et al.}$ [J. Chem. Phys. 126, 064703 (2007)]. The MRS is studied in detail, and our results show an excellent agreement with the lattice Boltzmann method, and with the analytical solution in its range of validity. We conclude that the MRS is well suited for this type of simulation, offering advantages such as being easy to implement and to represent complex geometries. Therefore it presents itself as a suitable candidate for more complex simulations.
description: 7 pages, 6 figures
Condicionantes da competitividade da cadeia de produção suinícola na região de Pará de Minas - MG
Creators: name: Moura, Altair Dias De
name: Lirio, Viviani Silva
name: Da Silva Junior, Aziz Galvao
name: Rocha, Denis Teixeira Da
name: Junqueira, Beatriz De Assis
name: Moura, Altair Dias De
name: Lirio, Viviani Silva
name: Da Silva Junior, Aziz Galvao
name: Rocha, Denis Teixeira Da
name: Junqueira, Beatriz De Assis
Publisher: name: Unknown
Year: 2006
Subjects: subject: Agribusiness
subject: Pork meat
subject: Competitiveness
subject: Production Chain
subject: Pará de Minas - MG

description: This study aimed to identify the determinants of the Pará de Minas pork meat chain competitiviness as well as suggest actions to improve it. The chain analysis was based on the Silva e Batalha (1999) methodology, and it was extended by the development of a S.W.O.T. analysis. The main chain strengths were related to the presence of cooperatives and a well developed communication infrastructure. However, its main weaknesses were related to the low level of farmer’s collective production sell, and lack of cooperative culture among farmers. The prejudice of the Brazilian population regarding to the consuption of pork meat was considered the main obstacle against the chain development as well as the environmental laws. However, some important opportunities were identified, such as potential for per capita pork meat consumption increase, gains regarding to the Kyoto Protocol and the existence of a potential market for the pork chain subproducts. Some actions were suggested as a way to increase chain competitiveness such as improvement of the cooperatives’ services, information sharing and distribution and farm management area, and environmental compliance of the farms.
Equivalence of two alternative approaches to Schrodinger equations
Creators: name: Gonul, B.
name: Koksal, K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recently developed simple approach for the exact/approximate solution of Schrodinger equations with constant/position-dependent mass, in which the potential is considered as in the perturbation theory, is shown to be equivalent to the one leading to the construction of exactly solvable potentials via the solution of second-order differential equations in terms of known special functions. The formalism in the former solves difficulties encountered in the latter in revealing the corrections explicitly to the unperturbed piece of the solutions whereas the other obviate cumbersome procedures used in the calculations of the former.
description: 7 pages, no figures
Impacts of dark energy on constraining neutrino mass after Planck 2018
Creators: name: Zhang, Ming
name: Zhang, Jing-Fei
name: Zhang, Xin
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: Considering the mass splittings of three active neutrinos, we investigate how the nature of dark energy affects the cosmological constraints on the total neutrino mass $\sum m_ν$ using the latest cosmological observations. In this paper, some typical dark energy models, including $Λ$CDM, $w$CDM, CPL, and HDE models, are discussed. In the analysis, we also consider the effects from the neutrino mass hierarchies, i.e., the degenerate hierarchy (DH), the normal hierarchy (NH), and the inverted hierarchy (IH). We employ the current cosmological observations to do the analysis, including the Planck 2018 temperature and polarization power spectra, the baryon acoustic oscillations (BAO), the type Ia supernovae (SNe), and the Hubble constant $H_0$ measurement. In the $Λ$CDM+$\sum m_ν$ model, we obtain the upper limits of the neutrino mass $\sum m_ν< 0.123$ eV (DH), $\sum m_ν< 0.156$ eV (NH), and $\sum m_ν< 0.185$ eV (IH) at the $95\%$ C.L., using the Planck+BAO+SNe data combination. For the $w$CDM+$\sum m_ν$ model and the CPL+$\sum m_ν$ model, larger upper limits of $\sum m_ν$ are obtained compared to those of the $Λ$CDM+$\sum m_ν$ model. The most stringent constraint on the neutrino mass, $\sum m_ν<0.080$ eV (DH), is derived in the HDE+$\sum m_ν$ model. In addition, we find that the inclusion of the local measurement of the Hubble constant in the data combination leads to tighter constraints on the total neutrino mass in all these dark energy models.
description: 9 pages, 4 figures
Dynamical traceback age of the $β$ Pictoris moving group
Creators: name: Miret-Roig, N.
name: Galli, P. A. B.
name: Brandner, W.
name: Bouy, H.
name: Barrado, D.
name: Olivares, J.
name: Antoja, T.
name: Romero-Gómez, M.
name: Figueras, F.
name: Lillo-Box, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context: The $β$ Pictoris moving group is one of the most well-known young associations in the solar neighbourhood and several members are known to host circumstellar discs, planets, and comets. Measuring its age with precision is basic to study several astrophysical processes such as planet formation and disc evolution which are strongly age dependent. Aims: We aim to determine a precise and accurate dynamical traceback age for the $β$ Pictoris moving group. Methods: Our sample combines the extremely precise Gaia DR2 astrometry with ground-based radial velocities measured in an homogeneous manner. We use an updated version of our algorithm to determine dynamical ages. The new approach takes into account a robust estimate of the spatial and kinematic covariance matrices of the association to improve the sample selection process and to perform the traceback analysis. Results: We estimate a dynamical age of $18.5_{-2.4}^{+2.0}$ Myr for the $β$ Pictoris moving group. We investigated the spatial substructure of the association at birth time and we propose the existence of a core of stars more concentrated. We also provide precise radial velocity measurements for 81 members of $β$ Pic, including ten stars with the first determination of their radial velocities. Conclusions: Our dynamical traceback age is three times more precise than previous traceback age estimates and, more important, for the first time, reconciles the traceback age with the most recent estimates of other dynamical, lithium depletion boundary, and isochronal ages. This has been possible thanks to the excellent astrometric and spectroscopic precisions, the homogeneity of our sample, and the detailed analysis of binaries and membership.
Young Stellar Complexes in the Giant Galaxy UGC 11973
Creators: name: Gusev, A. S.
name: Sakhibov, F. Kh.
name: Ezhkova, O. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present results of the analysis of photometric and spectroscopic observations of the young stellar complexes in the late giant spiral galaxy UGC 11973. Photometric analysis in the UBVRI bands have been carried out for the 13 largest complexes. For one of them, metallicity of the surrounding gas Z = 0.013+-0.005, the mass M = (4.6+-1.6)*10^6 Msun, and the age of the stellar complex t = (2.0+-1.1)*10^6 yr were evaluated, using spectroscopic data. It is shown that all complexes are massive (M >= 1.7*10^5 Msun) stellar groups younger than 3*10^8 yr.
description: Slightly edited version of the paper published in the Astronomy Reports, 2020, V.64, p.375. 9 pages, 3 figures, 3 tables