cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Minority Game of price promotions in fast moving consumer goods markets
Creators: name: Groot, Robert D.
name: Musters, Pieter A. D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: General Finance (q-fin.GN)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: A variation of the Minority Game has been applied to study the timing of promotional actions at retailers in the fast moving consumer goods market. The underlying hypotheses for this work are that price promotions are more effective when fewer than average competitors do a promotion, and that a promotion strategy can be based on past sales data. The first assumption has been checked by analysing 1467 promotional actions for three products on the Dutch market (ketchup, mayonnaise and curry sauce) over a 120-week period, both on an aggregated level and on retailer chain level. The second assumption was tested by analysing past sales data with the Minority Game. This revealed that high or low competitor promotional pressure for actual ketchup, mayonnaise, curry sauce and barbecue sauce markets is to some extent predictable up to a forecast of some 10 weeks. Whereas a random guess would be right 50% of the time, a single-agent game can predict the market with a success rate of 56% for a 6 to 9 week forecast. This number is the same for all four mentioned fast moving consumer markets. For a multi-agent game a larger variability in the success rate is obtained, but predictability can be as high as 65%. Contrary to expectation, the actual market does the opposite of what game theory would predict. This points at a systematic oscillation in the market. Even though this result is not fully understood, merely observing that this trend is present in the data could lead to exploitable trading benefits. As a check, random history strings were generated from which the statistical variation in the game prediction was studied. This shows that the odds are 1:1,000,000 that the observed pattern in the market is based on coincidence.
description: 19 pages, 10 figures, accepted for publication in Physica A
Does central bank communication really lead to better forecasts of policy decisions?: New evidence based on an Taylor rule model for the ECB
Creators: name: Sturm, Jan-Egbert
name: de Haan, Jakob
Publisher: name: ETH Zurich
Year: 2009
Subjects: Europäische Zentralbank
ECB
Communication
Central bank
Taylor rule
info:eu-repo/classification/ddc/330
Economics

description: KOF Working Papers, 236
A novel measurement system for unattended, in situ characterization of carbonaceous aerosols
Creators: name: Keller, Alejandro
name: Specht, Patrick
name: Steigmeier, Peter
name: Weingartner, Ernest
Publisher: name: Copernicus
Year: 2023
Subjects: subject: 620 - Ingenieurwissenschaften und Maschinenbau

description: Carbonaceous aerosol is a relevant constituent of the atmosphere in terms of climate and health impacts. Nevertheless, measuring this component poses many challenges. There is currently no simple and sensitive commercial technique that can reliably capture its totality in an unattended manner, with minimal user intervention, for extended periods of time. To address this issue we have developed the fast thermal carbon totalizator (FATCAT). Our system captures an aerosol sample on a rigid metallic filter and subsequently analyses it by rapidly heating the filter directly, through induction, to a temperature around 800°C. The carbon in the filter is oxidized and quantified as CO2 in order to establish the total carbon (TC) content of the sample. The metallic filter is robust, which solves filter displacement or leakage problems, and does not require a frequent replacement like other measurement techniques. The limit of detection of our system using the 3σ criterion is TC =0.19 µg-C (micrograms of carbon). This translates to an average ambient concentration of TC =0.32 µg-C m^−3 and TC =0.16 µg-C m^−3 for sampling interval of 1 or 2 h respectively using a sampling flow rate of 10 L min^−1. We present a series of measurements using a controlled, well-defined propane flame aerosol as well as wood-burning emissions using two different wood-burning stoves. Furthermore, we complement these measurements by coating the particles with secondary organic matter by means of an oxidation flow reactor. Our device shows a good correlation (correlation coefficient, R^2>0.99) with well-established techniques, like mass measurements by means of a tapered element oscillating microbalance and TC measurements by means of thermal–optical transmittance analysis. Furthermore, the homogeneous fast-heating of the filter produces fast thermograms. This is a new feature that, to our knowledge, is exclusive of our system. The fast thermograms contain information regarding the volatility and refractoriness of the sample without imposing an artificial fraction separation like other measurement methods. Different aerosol components, like wood-burning emissions, soot from the propane flame and secondary organic matter, create diverse identifiable patterns.
Characterizations of generalized John domains in $\mathbb{R}^n$ via metric duality
Creators: name: Goldstein, Pawel
name: Grochulska, Zofia
name: Guo, Chang-Yu
name: Koskela, Pekka
name: Nandi, Debanjan
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Topology (math.GN)
subject: Algebraic Topology (math.AT)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 57N65, 55M05

description: In this paper, we extend the characterization of John disks obtained by Näkki and Väisälä [Exp. Math. 1991] to generalized John domains in higher dimensions under mild assumptions. The main ingredient in this characterization is to use the higher dimensional analogues of the local linear connectivity (LLC) and homological bounded turning properties introduced by Väisälä in his study of metric duality theory [Math. Scan. 1997].
 Somewhat surprisingly, we constructed a uniform domain in $\R^3$, which is topologically simple, such that the complementary domain fails to be homotopically $1$-bounded turning. In particular, this shows that a similar characterization of generalized John domains in terms of higher dimensional homotopic bounded turning does not hold in dimension three.
description: 15 pages, 3 figures, completely rewritten
On Socially Distant Neighbors: Using Binaries to Constrain the Density of Objects in the Galactic Center
Creators: name: Rose, Sanaea C.
name: Naoz, Smadar
name: Gautam, Abhimat K.
name: Ghez, Andrea M.
name: Do, Tuan
name: Chu, Devin
name: Becklin, Eric
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Stars often reside in binary configurations. The nuclear star cluster surrounding the supermassive black hole (SMBH) in the Galactic Center (GC) is expected to include a binary population. In this dense environment, a binary frequently encounters and interacts with neighboring stars. These interactions vary from small perturbations to violent collisions. In the former case, weak gravitational interactions unbind a soft binary over the evaporation timescale, which depends on the binary properties as well as the density of surrounding objects and velocity dispersion. Similarly, collisions can also unbind a binary, and the collision rate depends on the density. Thus, the detection of a binary with known properties can constrain the density profile in the GC with implications for the number of compact objects, which are otherwise challenging to detect. We estimate the density necessary to unbind a binary within its lifetime for an orbit of arbitrary eccentricity about the SMBH. We find that the eccentricity has a minimal impact on the density constraint. In this proof of concept, we demonstrate that this procedure can probe the density in the GC using hypothetical young and old binaries as examples. Similarly, a known density profile provides constraints on the binary orbital separation. Our results highlight the need to consider multiple dynamical processes in tandem. In certain cases, often closer to the SMBH, the collision timescale rather than the evaporation timescale gives the more stringent density constraint, while other binaries farther from the SMBH provide unreliable density constraints because they migrate inwards due to mass segregation.
description: Accepted to ApJ, 20 pages, 11 figures
Rescaled entropy of cellular automata
Creators: name: Burguet, David
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: For a d-dimensional cellular automaton with d $\ge$ 1 we introduce a rescaled entropy which estimates the growth rate of the entropy at small scales by generalizing previous approaches [1, 9]. We also define a notion of Lyapunov exponent and proves a Ruelle inequality as already established for d = 1 in [16, 15]. Finally we generalize the entropy formula for 1-dimensional permutative cellular automata [18] to the rescaled entropy in higher dimensions. This last result extends recent works [17] of Shinoda and Tsukamoto dealing with the metric mean dimensions of two-dimensional symbolic dynamics.
description: Some inaccuracies in Section 4 and 5 corrected
title: Heimat Steuern
Creators: name: Wenzl, Raphael
Publisher: name: TU Wien
Year: 2016
Subjects: subject: Bürobauten
subject: offices

description: Der strukturschwache Raum Bayerns, Regionen fernab von den großen Ballungszentren wie München oder Nürnberg sind dem ländlichen Raum zuzuordnen und weisen häufig Probleme auf, denen es gilt, entgegen zu wirken. Darunter fallen, das Wegziehen der jungen Fachkräfte, Leerstände, Abnahme von Einzelhandel und Gastronomie, schlechte Infrastruktur, wenige Bildungs- und Berufsperspektiven. Zu diesen Regionen zählt auch der Bayerische Wald, meine Heimat. Die bayerische Staatsregierung beschloss im Zuge der-Heimatstrategie- die -Behördenverlagerung 2015-. Inhalt dieser Verlagerung ist die Verlegung von Behörden aus strukturstarken Regionen in strukturschwache Orte Bayerns. Dies soll Arbeitsplätze schaffen, Infrastrukturen verbessern, den ländlichen Raum fördern und den Menschen in diesen Orten Perspektiven bieten. Auch Zwiesel, eine Stadt mit knapp 10.000 Einwohnern im Bayerischen Wald, ist von dieser Maßnahme betroffen. Hierbei werden im Zuge der Behördenverlagerung 100 Stellen des Landesamtes für Steuern nach Zwiesel verlegt. Das entspricht 1% der Gesamtbevölkerung Zwiesels. Ziel dieser Diplomarbeit ist es, Potentiale der Stellenverlegung auszuarbeiten und ein umfassendes Gesamtkonzept zur Aktivierung des ländlichen Raumes zu erstellen. Ein konkreter Gebäudeentwurf ist ebenfalls Bestandteil der Arbeit.
description: Bavarian areas located out of big conurbations like for example Munich or Nuremberg are to be associated as rural and defined as economically backward. These areas often show problems such as moving of professionals, vacancies, reduction of the retail industry and gastronomy, poor infrastructure as well as few educational and career prospects. My home, the Bavarian Forest, counts to one of these areas. The Bavarian government decided the moving of authorities which is called -Behördenverlagerung 2015- in the course of its homeland strategy. Content of it is the relocation of authorities from economically strong to economically backward areas of Bavaria. This strategy should create new jobs, improve the infrastructure, enhance rural areas and give prospects to people living there. Zwiesel, a town of about 10,000 residents located in the Bavarian Forest is also affected of the intervention. In course of the -Behördenverlagerung- around 100 working places of the Bavarian Tax Authority will be relocated there. This is an equivalent of 1 % of the towns total population. The aim of the diploma thesis is to develop all potentials of the job relocation and to set up a comprehensive overall concept of the activation of rural areas as well as a concrete design of the authority building.
Chemical and physical influences on aerosol activation in liquid clouds. A study based on observations from the Jungfraujoch, Switzerland
Creators: name: Hoyle, Christopher R.
name: Webster, Clare S.
name: Rieder, Harald E.
name: Nenes, Athanasios
name: Hammer, Emanuel
name: Herrmann, Erik
name: Gysel, Martin
name: Bukowiecki, Nicolas
name: Weingartner, Ernest
name: Steinbacher, Martin
name: Baltensperger, Urs
Publisher: name: Copernicus
Year: 2016
Subjects: subject: 500 - Naturwissenschaften

description: A simple statistical model to predict the number of aerosols which activate to form cloud droplets in warm clouds has been established, based on regression analysis of data from four summertime Cloud and Aerosol Characterisation Experiments (CLACE) at the high-altitude site Jungfraujoch (JFJ). It is shown that 79 % of the observed variance in droplet numbers can be represented by a model accounting only for the number of potential cloud condensation nuclei (defined as number of particles larger than 80 nm in diameter), while the mean errors in the model representation may be reduced by the addition of further explanatory variables, such as the mixing ratios of O3, CO, and the height of the measurements above cloud base. The statistical model has a similar ability to represent the observed droplet numbers in each of the individual years, as well as for the two predominant local wind directions at the JFJ (northwest and southeast). Given the central European location of the JFJ, with air masses in summer being representative of the free troposphere with regular boundary layer in-mixing via convection, we expect that this statistical model is generally applicable to warm clouds under conditions where droplet formation is aerosol limited (i.e. at relatively high updraught velocities and/or relatively low aerosol number concentrations). A comparison between the statistical model and an established microphysical parametrization shows good agreement between the two and supports the conclusion that cloud droplet formation at the JFJ is predominantly controlled by the number concentration of aerosol particles.
General solution of the inhomogenous div-curl system and consequences
Creators: name: Delgado, Briceyda B.
name: Porter, R. Michael
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 35Q60, 35Q61, 30G20, 30G35, 32A26, 35F35, 35J15

description: We consider the inhomogeneous div-curl system (i.e.\ to find a vector field with prescribed div and curl) in a bounded star-shaped domain in $\mathbb{R}^3$. An explicit general solution is given in terms of classical integral operators, completing previously known results obtained under restrictive conditions. This solution allows us to solve questions related to the quaternionic main Vekua equation $DW=(Df/f)\overline W$ in $\mathbb{R}^3$, such as finding the vector part when the scalar part is known. In addition, using the general solution to the div-curl system and the known existence of the solution of the inhomogeneous conductivity equation, we prove the existence of solutions of the inhomogeneous double curl equation, and give an explicit solution for the case of static Maxwell's equations with only variable permeability.
description: 29 pages
The Abu Ghraib scandal : visual performances of American power
Creators: name: Chan, Carissa
Publisher: name: University of British Columbia
Year: 2010

description: On April 38,2004, disturbing photographs capturing the abuse of Iraqi prisoners by American soldiers were aired on the CBS news program "60 Minutes 11" (Levi Strauss, 2004: 87). The photographs depicted events that took place in October 2003 at the Abu Chraib prison outside of Baghdad, Iraq. The presentation and preservation of the acts on film served as a "public ritual of mortification and a visual marker of humiliation" (Giroux, 2004: 790) of the detainees by the American military. This analysis supplements the wealth of information on the transmission of ideologies through discourse with a focus on visual representation, specifically with regards to the Abu Ghraib scandal, but also in the broader context of the war on Iraq. The American state, military and media were complicit in the production and circulation of the myth of freedom and democracy in order to garner and preserve public support for the war. I explore how the ideological justifications leading up to the war were depicted through particular details in the photos and how these became subject to later debate and discussion in the aftermath of world-wide circulation. According to court testimonies of the soldiers, the images were circulated around the Abu Ghraib prison to function as sources of psychological humiliation and intimidation. While the images themselves do not prove or disprove that acts of physical torture took place, I contend that the images visually demonstrated how the building of the United States as an empire was predicated on gendered, sexualized and racialized power. I have chosen two of the most notorious photographs in the scandal and deconstructed them using Roland Barthes’ (1981) trick effects to unveil the intersections of these systems of power. I also analyze how the constructed image of the war as a showdown between good and evil was loaded with hidden racialized, gendered, and religious categories of knowledge. The distribution of the photographs within the global sphere revealed the ideological meanings behind the production of the images and also exposed the strategies the state and media utilized to preserve the myth of democracy and freedom.
Criticality in Charge-asymmetric Hard-sphere Ionic Fluids
Creators: name: Aqua, Jean-Noel
name: Banerjee, Shubho
name: Fisher, Michael E.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Phase separation and criticality are analyzed in $z$:1 charge-asymmetric ionic fluids of equisized hard spheres by generalizing the Debye-Hückel approach combined with ionic association, cluster solvation by charged ions, and hard-core interactions, following lines developed by Fisher and Levin (1993, 1996) for the 1:1 case (i.e., the restricted primitive model). Explicit analytical calculations for 2:1 and 3:1 systems account for ionic association into dimers, trimers, and tetramers and subsequent multipolar cluster solvation. The reduced critical temperatures, $T_c^*$ (normalized by $z$), \textit{decrease} with charge asymmetry, while the critical densities \textit{increase} rapidly with $z$. The results compare favorably with simulations and represent a distinct improvement over all current theories such as the MSA, SPB, etc. For $z$$\ne$1, the interphase Galvani (or absolute electrostatic) potential difference, $Δϕ(T)$, between coexisting liquid and vapor phases is calculated and found to vanish as $|T-T_c|^β$ when $T\to T_c-$ with, since our approximations are classical, $β={1/2}$. Above $T_c$, the compressibility maxima and so-called $k$-inflection loci (which aid the fast and accurate determination of the critical parameters) are found to exhibit a strong $z$-dependence.
description: 25 pages, 14 figures; last update with typos corrected and some added references
A Heterogeneidade e suas Implicações para as Políticas Públicas no Rural Brasileiro
Creators: name: Belik, Walter
name: Belik, Walter
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: Agricultural policy
subject: rural development
subject: heterogeneity.

description: This article is a fast review on the heterogeneity of Brazilian agriculture debate. It was demonstrated that this is a historically verified condition in our rural areas and can be found in other agricultural sectors, more technical or more labor intensive. Beyond the heterogeneity, public policy must turn its attention to reducing inequalities that have their causes related to differential access to factors of production and the low capacity of the producers to obtain net gains from their holdings. It is recommended the adoption of simple actions related to technical assistance, extension, credit to produce and trade.
title: Pressure robust discretizations for Navier Stokes equations : divergence-free reconstruction for Taylor-Hood elements and high order hybrid discontinuous Galerkin methods
Creators: name: Lederer, Philip Lukas
Publisher: name: TU Wien
Year: 2016
Subjects: subject: Navier Stokes
subject: Discontinuous Galerkin
subject: inf-sup condition
subject: polynomial robust
subject: divergence-free

description: This thesis focuses on a well-known issue of discretization techniques for solving the incompressible Navier Stokes equations. Due to a weak treatment of the incompressibility constraint there are different disadvantages that appear, which can have a major impact on the convergence and physical behaviour of the solutions. First we approximate the equations with a well-known pair of elements and introduce an operator that creates a reconstruction into a proper space to fix the mentioned problems. \newline Afterwards we use an H(div) conforming method that already handles the incompressibility constraint in a proper way. For a stable high order approximation an estimation for the saddlepoint structure of the Stokes equations is needed, known as the Ladyschenskaja-Babuska-Brezzi (LBB) condition. The independency of the estimation from the order of the polynomial degree is shown in this thesis. For that we introduce an H 2-stable extension that preserves polynomials. All operators and schemes are implemented based on the finite element library Netgen/NGSolve and tested with proper examples.
Reply to Comment on "Quantum dense key distribution"
Creators: name: Degiovanni, I. P.
name: Berchera, I. Ruo
name: Castelletto, S.
name: Rastello, M. L.
name: Bovino, F. A.
name: Colla, A. M.
name: Castagnoli, G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this Reply we propose a modified security proof of the Quantum Dense Key Distribution protocol detecting also the eavesdropping attack proposed by Wojcik in his Comment.
description: To appear on PRA with minor changes
Impactos Dinâmicos dos Fatores de Produção e da Produtividade sobre a Função de Produção Agrícola
Creators: name: Bragagnolo, Cassiano
name: Barros, Geraldo Sant’Ana De Camargo
name: Bragagnolo, Cassiano
name: Barros, Geraldo Sant’Ana De Camargo
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: agricultural production factors
subject: vector autoregressive
subject: agricultural economic growth.

description: This study analyzes the dynamic impacts of the production factors capital, labor and lands as well as total factor productivity (TFP) in agriculture economic growth for the period from 1972 to 2009. The results suggest that as the TFP increases labor decreases, and that the modernization of agriculture has brought technological innovations that uses less labor in the production process. The variance historical decomposition of forecast errors indicated that during the 1970´s and 1980´s, agricultural product was larger than expected. This was only possible due to the high productivity’s gains occurred at that time. During the 1990´s and 2000´s, while productivity continued to increase the potential output growth, factors such as low investment and decreasing land expansion limited the agricultural economic growth, which was lower than expected.
A robot that counts like a child: a developmental model of counting and pointing
Creators: name: Pecyna, Leszek
name: Cangelosi, Angelo
name: Di Nuovo, Alessandro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: In this paper, a novel neuro-robotics model capable of counting real items is introduced. The model allows us to investigate the interaction between embodiment and numerical cognition. This is composed of a deep neural network capable of image processing and sequential tasks performance, and a robotic platform providing the embodiment - the iCub humanoid robot. The network is trained using images from the robot's cameras and proprioceptive signals from its joints. The trained model is able to count a set of items and at the same time points to them. We investigate the influence of pointing on the counting process and compare our results with those from studies with children. Several training approaches are presented in this paper all of them uses pre-training routine allowing the network to gain the ability of pointing and number recitation (from 1 to 10) prior to counting training. The impact of the counted set size and distance to the objects are investigated. The obtained results on counting performance show similarities with those from human studies.
description: 28 pages, 13 figures. This is a pre-print of an article published in Psychological Research. The final authenticated version is available online at: https://doi.org/10.1007/s00426-020-01428-8
Supplementary Appendices for "A Hybrid Gravity and Route Choice Model to Assess Vector Traffic in Large-Scale Road Networks" from A hybrid gravity and route choice model to assess vector traffic in large-scale road networks
Creators: name: S. M. Fischer
name: M. Beck
name: L.-M. Herborg
name: M. A. Lewis
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Computational Biology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Supplementary appendices containing details about the data, methods, and results of the study
Metric-Scale Truncation-Robust Heatmaps for 3D Human Pose Estimation
Creators: name: Sárándi, István
name: Linder, Timm
name: Arras, Kai O.
name: Leibe, Bastian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Heatmap representations have formed the basis of 2D human pose estimation systems for many years, but their generalizations for 3D pose have only recently been considered. This includes 2.5D volumetric heatmaps, whose X and Y axes correspond to image space and the Z axis to metric depth around the subject. To obtain metric-scale predictions, these methods must include a separate, explicit post-processing step to resolve scale ambiguity. Further, they cannot encode body joint positions outside of the image boundaries, leading to incomplete pose estimates in case of image truncation. We address these limitations by proposing metric-scale truncation-robust (MeTRo) volumetric heatmaps, whose dimensions are defined in metric 3D space near the subject, instead of being aligned with image space. We train a fully-convolutional network to estimate such heatmaps from monocular RGB in an end-to-end manner. This reinterpretation of the heatmap dimensions allows us to estimate complete metric-scale poses without test-time knowledge of the focal length or person distance and without relying on anthropometric heuristics in post-processing. Furthermore, as the image space is decoupled from the heatmap space, the network can learn to reason about joints beyond the image boundary. Using ResNet-50 without any additional learned layers, we obtain state-of-the-art results on the Human3.6M and MPI-INF-3DHP benchmarks. As our method is simple and fast, it can become a useful component for real-time top-down multi-person pose estimation systems. We make our code publicly available to facilitate further research (see https://vision.rwth-aachen.de/metro-pose3d).
description: Accepted for publication at the 2020 IEEE Conference on Automatic Face and Gesture Recognition (FG)
Contribution of new particle formation to the total aerosol concentration at the high‐altitude site Jungfraujoch (3580 m asl, Switzerland)
Creators: name: Tröstl, Jasmin
name: Herrmann, Erik
name: Frege, Carla
name: Bianchi, Federico
name: Molteni, Ugo
name: Bukowiecki, Nicolas
name: Hoyle, Christopher R.
name: Steinbacher, Martin
name: Weingartner, Ernest
name: Dommen, Josef
name: Gysel, Martin
name: Baltensperger, Urs
Publisher: name: Wiley
Year: 2016
Subjects: subject: 550 - Geowissenschaften

description: Previous modeling studies hypothesized that a large fraction of cloud condensation nuclei (CCN) is attributed to new particle formation (NPF) in the free troposphere. Despite the potential importance of this process, only few long‐term observations have been performed to date. Here we present the results of a 12 month campaign of NPF observations at the high‐altitude site Jungfraujoch (JFJ, 3580 m above sea level (asl)). Our results show that NPF significantly adds to the total aerosol concentration at the JFJ and only occurs via previous precursor entrainment from the planetary boundary layer (PBL). Freshly nucleated particles do not directly grow to CCN size (90 nm) within observable time scales (maximum 48 h). The contribution of NPF to the CCN concentration is low within this time frame compared to other sources, such as PBL entrainment of larger particles. A multistep growth mechanism is proposed which allows previously formed Aitken mode particles to add to the CCN concentration. A parametrization is derived to explain formation rates at the JFJ, showing that precursor concentration, PBL influence, and global radiation are the key factors controlling new particle formation at the site.
Chiral vortical effect in relativistic and nonrelativistic systems
Creators: name: Shitade, Atsuo
name: Mameda, Kazuya
name: Hayata, Tomoya
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We formulate the chiral vortical effect (CVE) and its generalization called generalized vortical effect using the semiclassical theory of wave packet dynamics. We take the spin-vorticity coupling into account and calculate the transport charge current by subtracting the magnetization one from the Noether local one. We find that the transport charge current in the CVE always vanishes in relativistic chiral fermions. This result implies that it cannot be observed in transport experiments in condensed matter systems such as Dirac/Weyl semimetals with the pseudo-Lorentz symmetry. We also demonstrate that the anisotropic CVE can be observed in nonrelativistic systems that belong to the point groups $D_n, C_n (n = 2, 3, 4, 6)$, and $C_1$, such as $n$-type tellurium.
description: 7 pages, 1 figure
Acesso à Renda e Inflação de Preços de Alimentos no Brasil: análise dos efeitos do programa Bolsa Família
Creators: name: Neder, Henrique
name: Alves Filho, Niemeyer
name: Souza, Sabrina
name: Neder, Henrique
name: Alves Filho, Niemeyer
name: Souza, Sabrina
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: Food inflation
subject: food insurance
subject: Bolsa Família program.

description: In this work we analyze the effects of the Bolsa Família program on food security in Brazil, considering the food inflation from the late 2000s. The evaluation of the impact of this program was performed from the identification of the pattern of food consumption of families potentially benefited from it (using POF data), in order to check its potential purchase, considering the inflationary process cited. The data presented indicate effective action to combat hunger policy from Lula government, but it is insufficient to solve the problem of food deprivation in a structural and permanent sense: even if all the poor and extremely poor families receive the benefit of Bolsa Família program, yet there would be no guarantees for Food Security.
DETERMINANTY ZASOBOWE PROCESÓW REPRODUKCJI MAJĄTKU GOSPODARSTW ROLNYCH PROWADZĄCYCH RACHUNKOWOŚĆ ROLNĄ (FADN)
Creators: name: Grzelak, Aleksander
name: Grzelak, Aleksander
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: reproduction
subject: production factors
subject: farm

description: The main aim of the article was to identify the meaning of resources determinants of reproduction processes of assets in farms engaged in agricultural accountancy of the FADN. One has state, that that a higher ratio of reproduction in the analyzed groups, accompanied a greater resources of land, labor and capital. These relationships are non-linear and characterized by a relatively moderately volatile. The simultaneous influence of all three factors of production for economic processes appear synergies effects in range of the modernization of farms. Labor ratio is critical in shaping the range of reproduction process, which is connected with their direct influence on the economic effects of farming. One has notice also that while the reproduction processes are dependent on business outlook factors, inasmuch resource factors are relatively independent from them.
Quantum dimer model with Z_2 liquid ground-state: interpolation between cylinder and disk topologies and toy model for a topological quantum-bit
Creators: name: Misguich, Gregoire
name: Pasquier, Vincent
name: Mila, Frederic
name: Lhuillier, Claire
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider a quantum dimer model (QDM) on the kagome lattice which was introduced recently [Phys. Rev. Lett. 89, 137202 (2002)]. It realizes a Z_2 liquid phase and its spectrum was obtained exactly. It displays a topological degeneracy when the lattice has a non-trivial geometry (cylinder, torus, etc). We discuss and solve two extensions of the model where perturbations along lines are introduced: first the introduction of a potential energy term repelling (or attracting) the dimers along a line is added, second a perturbation allowing to create, move or destroy monomers. For each of these perturbations we show that there exists a critical value above which, in the thermodynamic limit, the degeneracy of the ground-state is lifted from 2 (on a cylinder) to 1. In both cases the exact value of the gap between the first two levels is obtained by a mapping to an Ising chain in transverse field. This model provides an example of solvable Hamiltonian for a topological quantum bit where the two perturbations act as a diagonal and a transverse operator in the two-dimensional subspace. We discuss how crossing the transitions may be used in the manipulation of the quantum bit to optimize simultaneously the frequency of operation and the losses due to decoherence.
description: 11 pages, 7 (.eps) figures. Improved discussion of the destruction of the topological degeneracy and other minor corrections. Version to appear in Phys. Rev. B
OCENA EFEKTYWNOŚCI EKONOMICZNEJ POLSKICH PRZEDSIĘBIORSTW ROLNO-SPOŻYWCZYCH Z WYKORZYSTANIEM ANALIZY DU PONTA
Creators: name: Jałowiecki, Piotr
name: Jałowiecka, Ewa
name: Woźniakowski, Tomasz
name: Jałowiecki, Piotr
name: Jałowiecka, Ewa
name: Woźniakowski, Tomasz
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: agri-food industry
subject: economic efficiency
subject: Du Pont model

description: The results of the analysis of the economic efficiency of Polish agri-food enterprises carried out in accordance with the model Du Pont were presented in the paper. The studies included distribution companies in the industries and employment size groups. The results indicate the higher profitability of small enterprises as well as the advantage in financing their business equity. It was also very high diversity of surveyed enterprises.
Some regularity results for $p$-harmonic mappings between Riemannian manifolds
Creators: name: Guo, Chang-Yu
name: Xiang, Chang-Lin
Publisher: name: arXiv
Year: 2018
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 58E15, 49F22

description: Let $M$ be a $C^2$-smooth Riemannian manifold with boundary and $N$ a complete $C^2$-smooth Riemannian manifold. We show that each stationary $p$-harmonic mapping $u\colon M\to N$, whose image lies in a compact subset of $N$, is locally $C^{1,α}$ for some $α\in (0,1)$, provided that $N$ is simply connected and has non-positive sectional curvature. We also prove similar results for each minimizing $p$-harmonic mapping $u\colon M\to N$ with $u(M)$ being contained in a regular geodesic ball. Moreover, when $M$ has non-negative Ricci curvature and $N$ is simply connected and has non-positive sectional curvature, we deduce a quantitative gradient estimate for each $C^1$-smooth weakly $p$-harmonic mapping $u\colon M\to N$. Consequently, we obtain a Liouville-type theorem for $C^1$-smooth weakly $p$-harmonic mappings in the same setting.
description: 23 pages; we made several changes according to the suggestions of the referees
Quasi-local energy and Oppenheimer-Snyder collapse
Creators: name: He, Xiaokai
name: Xie, Naqing
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences
subject: 83C75 (Primary), 83C57 (Secondary)

description: We consider a scenario of the gravitational collapse of the Oppenheimer-Snyder dust cloud with spatially constant matter density. Given a closed two-surface within the star, three versions of the quasi-local energy are investigated. We show that, during the collapse, (i) the Geroch energy of the surface is nonpositive and increases to zero; (ii) the Hawking energy of the surface is monotonically increasing and approaches to the Hayward energy of the initial surface; and (iii) the Hayward energy of the surface is conserved and remains positive. These results have no restrictions on the topology and the symmetry of the surface.
description: 10 pages, 1 figure, references added, accepted for publication in Classical and Quantum Gravity
Ppresentation: Farmers' knowledge and Behaviour on Environment-Friendly Pest Control in Bantul Regency
Creators: name: Antik Suprihanti
name: Rukmowati Brotodjojo
name: Tutut Wirawati
Publisher: name: Zenodo
Year: 2022

description: This material has presented on 1st International Conference on Advance Research in Agriculture and Food. October 25, 2022
La connexion des ports de la côte ouest-africaine au réseau mondial de lignes maritimes régulières et ses implications : une analyse à travers l'indice de connectivité de la CNUCED
Creators: name: KAKOU, Ahihoua Maurice
Publisher: name: Zenodo
Year: 2024
Subjects: Indice de connectivité de la CNUCED ; Ports de la côte ouest-africaine ; Réseau mondial de lignes régulières ; Compétitivité portuaire ; Desserte maritime

description: Le réseau global de circulation des lignes maritimes régulières souligne le poids et la place des économies dans la mondialisation des échanges. L’objectif de ce papier est d’analyser le réseau global de lignes régulières desservant les ports de l’Afrique de l’Ouest et en déduire la place de ces ports dans le système mondial des flux d’échanges. Grâce à l’indice de connectivité du transport maritime de lignes régulières, nous a pu analyser l’intégration de la côte maritime ouest-africaine dans ce réseau maritime. Ainsi, la côte ouest-africaine fait partie des façades maritimes les moins bien loties en termes d’offres de transport maritime et de possibilité de participation aux échanges mondiaux. Cette situation trouve des explications d’une part dans la structure du système de la logistique portuaire et économique de la région et d’autre part dans la logique et stratégie d’organisation des armateurs de lignes régulières.
ZRÓŻNICOWANIE POZIOMU INFRASTRUKTURY SPOŁECZNEJ NA OBSZARACH WIEJSKICH WOJEWÓDZTWA ZACHODNIOPOMORSKIEGO
Creators: name: Janiszewska, Dorota A.
name: Ossowska, Luiza
name: Janiszewska, Dorota A.
name: Ossowska, Luiza
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: social infrastructure
subject: Zachodniopomorskie province
subject: rural areas
subject: education
subject: healthcare

description: The aim of the study was an appraisal of social infrastructure development level in rural areas of Zachodniopomorskie province in 1999 and 2013. The research was conducted on both the rural and urban-rural communes. The communes determinants levels was determined using the synthetic indicator. The highest level of social infrastructure characterized the communes located in the north and west parts of Zachodniopomorskie province.
title: "Space Warp Collective" : a coworking space in Vienna
Creators: name: Kusturica, Anja
Publisher: name: TU Wien
Year: 2016
Subjects: subject: Architektonischer Entwurf
subject: Architectural design

description: Die Welt, in der wir heutzutage leben, bewegt sich konstant schneller und ermutigt uns, signifikante Veränderungen in der Gestaltung unserer täglichen Strukturen zuzulassen. In diesem Kontext kommt es auch zu einem Umdenken in unserer Wahrnehmung, wie sich ein wichtiges und bestimmendes Element unseres Alltags darstellt - der Arbeitsplatz. Das typische Büro passt sich nicht mehr dem heutigen Arbeitsrhythmus an, es unterstützt uns nicht bei der Bewältigung neuer Herausforderungen, denen wir uns in unserem Job stellen müssen. Es gehört demnach zu einem System, welches im Begriff ist, sich aufzulösen. Besonders Selbständige, die keinen fixen Arbeits- platz haben, benötigen ein Modell, welches die richtige Umgebung schafft, um ihnen die Erledigung ihrer Aufgaben zu ermöglichen, Isolation zu vermeiden und von Interaktion zu profitieren. Coworking Spaces versuchen, hier eine ganzheitliche Lösung anzubieten, indem sie ein neues Denkmodell zu Design und Kombination individueller Bedürfnisse mit den Vorteilen einer Gemeinschaft, etablieren. Man kann ihre Entwicklung in den letzten Jahre global nachverfolgen. Bis jetzt sind Coworking Spaces meist immer noch in früheren Büros untergebracht, ungenutzten Flächen oder sogar verlassenen Gebäuden. Im Zuge meiner Diplomarbeit möchte ich mit diesem vielversprechenden Trend einen Schritt weitergehen und einen Coworking Space in einem Neubau im Herzen Wiens entwerfen. Ein Ort soll entstehen, an welchem Menschen gerne arbeiten, aber auch zusammenkommen und ihre Ideen mit anderen teilen.
description: The world we are nowadays living in is constantly moving faster and therefore we have to face major changes in the way we are shaping the structures of our everyday life. In this context we also have to rethink our perception of what is an important and determining element of our daily routine - the workplace. The typical office is no longer adjusted to a productive functioning, it doesn-t support us in managing the challanges we have to deal with in our jobs and thus belongs to a system, that is more and more being dissolved. Especially freelancers, who don-t have a permanent office space, are in need of a new model, that provides the right environment to get their work done, escape isolation and benefit from interaction. Coworking spaces are trying to offer an overall solution for this topic by establishing a new mindset of how the workingmode should be designed and combining individual needs with the advantages of a community. One can observe their development all over the world in the last few years. Up to now a lot of coworking spaces are still located in former offices, unused places or even abandoned buildings. In the course of my thesis I want to advance this promising trend and concept by designing a new coworking building in the heart of Vienna and creating a spot where people are happy to work, but also to meet and share their ideas with others.
Perturbative dynamics of fuzzy spheres at large N
Creators: name: Azuma, Takehiro
name: Nagao, Keiichi
name: Nishimura, Jun
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We clarify some peculiar aspects of the perturbative expansion around a classical fuzzy-sphere solution in matrix models with a cubic term. While the effective action in the large-N limit is saturated at the one-loop level, we find that the ``one-loop dominance'' does not hold for generic observables due to one-particle reducible diagrams. However, we may exploit the one-loop dominance for the effective action and obtain various observables to all orders from one-loop calculation by simply shifting the center of expansion to the ``quantum solution'', which extremizes the effective action. We confirm the validity of this method by comparison with the direct two-loop calculation and with Monte Carlo results in the 3d Yang-Mills-Chern-Simons matrix model. From the all order result we find that the perturbative expansion has a finite radius of convergence.
description: 21 pages, 9 figures, (v2) all order analyses added, (v3) some typos corrected
Two forms of the integral representations of the Mittag-Leffler function
Creators: name: Saenko, Viacheslav V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 33E12

description: The integral representation of the two-parameter Mittag-Leffler function $E_{ρ,μ}(z)$ is considered in the paper that expresses its value in terms of the contour integral. For this integral representation, the transition is made from integration over a complex variable to integration over real variables. It is shown that as a result of such a transition, the integral representation of the function $E_{ρ,μ}(z)$ has two forms: the representation ``A'' and ``B''. Each of these representations has its advantages and drawbacks. In the paper, the corresponding theorems are formulated and proved, and the advantages and disadvantages of each of the obtained representations are discussed.
Inert sextuplet scalar dark matter at the LHC and future colliders
Creators: name: Liu, Dan-Yang
name: Cai, Chengfeng
name: Yu, Zhao-Huan
name: Zeng, Yu-Pan
name: Zhang, Hong-Hao
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study a dark matter model constructed by extending the standard model with an inert $\mathrm{SU}(2)_\mathrm{L}$ sextuplet scalar of hypercharge 1/2. The sextuplet components are split by the quartic couplings between the sextuplet and the Higgs doublet after electroweak symmetry breaking, resulting in a dark sector with one triply charged, two doubly charged, two singly charged, and two neutral scalars. The lighter neutral scalar boson acts as a dark matter particle. We investigate the constraints on this model from the $\text{monojet} + /\!\!\!\!E_\mathrm{T}$ and $\text{soft-dilepton} + \text{jets} + /\!\!\!\!E_\mathrm{T}$ searches at the 13 TeV Large Hadron Collider, as well as from the current electroweak precision test. Furthermore, we estimate the projected sensitivities of a 100 TeV $pp$ collider and of a future $e^+e^-$ collider, and find that such future projects could probe TeV mass scales. Nonetheless, such mass scales only correspond to a subdominant component of the observed relic abundance if the dark matter particles solely originate from thermal production.
description: 37 pages, 11 figures