cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Investment Spikes in Dutch Horticulture: An Analysis at Firm and Aggregate Firm Level Over the Period 1975-1999
Creators: name: Goncharova, Natalia V.
name: Oskam, Arie J.
name: Goncharova, Natalia V.
name: Oskam, Arie J.
Publisher: name: Unknown
Year: 2006
Subjects: subject: Crop Production/Industries
subject: Investments
subject: discrete-hazard duration model
subject: Dutch greenhouse horticulture
subject: gamma heterogeneity

description: An intermittent and lumpy pattern of investments is observed in the Dutch horticulture sector: only 16.5% of firms experience of investment spike, but they account for 67.7% of total investment. The objective of this paper is to examine the impact of time-varying and time-invariant variables on the probability of observing an investment spieke. This paper investigates the spells between investment spikes in a discrete-time proportional hazard framework. Duration models were estimated on two data sets: on an unbalanced panel and on a grouped into 10 groups data of Dutch glasshouse firms over the period 1975-1999. Different specifications of the model were estimated. Theoretically based model can sufficiently explain the occurrence of investment spikes. Both models show a 6- year period of investment spikes that is also confirmed for the average firm which exhibits a higher hazard ratio in the 6th, 12-13th and 19-20th years of duration. The presence of investment cycle can demonstrate the long-run policy of firms in presence of non-convex adjustment costs. The panel-data models are augmented with a Gamma distribution to account for unobserved heterogeneity among firms.
音楽理論に基づいた鼻歌作曲支援システム "ハミコン"
Creators: name: 木村 翔平、鈴木 優、鈴木 智文
Publisher: name: Zenodo
Year: 2012
Subjects: 鼻歌、鼻歌作曲支援

description: 誰もが手軽に作曲する手段の一つとして鼻歌を PC のマイクから入力して MIDI 形式に変換する方法がある。音楽情報処理の分野においても鼻歌を MIDI 形式に 変換する研究は数多くされてきたが、音楽経験のない人等が使った際に鼻歌から 得られる周波数をそのままノートナンバーに変換してもユーザの意図と異なって いたり音楽的に不自然なメロディになってしまう場合が多い。よって誰にでもで きる作曲手段として鼻歌作曲システムを実装する上で重要なことは、元の鼻歌の 曲らしさを残しながらも音楽的に自然な形になるように修正を行うことであるが、 既存の鼻歌作曲システムの多くはその実現には至っているとは言えない。 そこで本システムでは入力された鼻歌メロディに対して音楽理論に基づいた音 高修正とリズム修正をすることで、鼻歌を音楽的に妥当な形で出力する鼻歌作曲 システムを試作した。システムを実装し、実行例を検証した結果、本システムの 修正ルールによる出力結果が音楽的に妥当な形であるということを確認した。
Testing Market Integration for Fresh Pineapples in Kenya
Creators: name: Onyuma, Samuel O.
name: Icart, Eric
name: Owuor, George
name: Onyuma, Samuel O.
name: Icart, Eric
name: Owuor, George
Publisher: name: Unknown
Year: 2006
Subjects: subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: marketing Channel
subject: Marketing efficiency
subject: market integration

description: This paper is based on a survey of thirty-one market actors from producing and consumption markets in Kenya. The data was collected through personal interviews. In analyzing integration of p ineapple markets we use Ravallion-type model. Results show that pineapple market in Kenya is oligopsonistic in nature with aspects of collusion amongst the urban middlemen and local market traders thus barring further entry by oth er potential actors. There was little market integration between urban markets and producing markets, and no integration between the rural producing markets. However, model results show that information flow between production and consumption markets significantly influence market integration, an indicator for efficiency in resource allocation and price transmission which is likely to result in lower transaction costs or higher profits to market actors. The paper recommends for policy intervention to promote information flow in the pineapple market chains as a strategy for improving rural incomes and encourage more market actors to enter and participate for efficiency in the marketing system.
The State Equation of the Yang-Mills field Dark Energy Models
Creators: name: Zhao, Wen
name: Zhang, Yang
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper, we study the possibility of building Yang-Mills(YM) field dark energy models with equation of state (EoS) crossing -1, and find that it can not be realized by the single YM field models, no matter what kind of lagrangian or initial condition. But the states of $-1-1$ to $
description: 20 pages, 4 figures. minor typos corrected
Taking a New Look at Empirical Models of Adoption: Average Treatment Effect Estimation of Adoption Rates and their Determinants
Creators: name: Diagne, Aliou
name: Diagne, Aliou
Publisher: name: Unknown
Year: 2006
Subjects: subject: Research and Development/Tech Change/Emerging Technologies
subject: Technology Adoption
subject: Rice
subject: NERICA
subject: West Africa
subject: Average Treatment Effect

description: This paper shows that the observed sample adoption rate does not consistently estimate the population adoption rate even if the sample is random. It is proved that instead the sample adoption rate is a consistent estimate of the population joint exposure and adoption rate, which does not inform about adoption per se. Likewise, it is shown that a model of adoption with observed adoption outcome as dependent variable and where exposure to the technology is not observed and controlled for cannot yield consistent estimates of the determinants of adoption. Such model can at best provide consistent estimates of the effects of the included explanatory variables on joint exposure and adoption. Even for that to be possible, the model must be explicitly specified as a model of determinants of joint exposure and adoption and not as a model of determinants of adoption alone. The paper uses the counterfactual outcomes framework to show that the true population adoption rate corresponds to what is defined in the modern treatment effect literature as the average treatment effect (ATE), which measures the effect or impact of a "treatment" on a person randomly selected in the population. In the adoption context, a "treatment" corresponds to exposure to the technology. Another quantity that is also the subject of attention in the treatment effect literature is the average treatment effect on the treated, which measures the effect of treatment in the treated subpopulation and corresponds in the adoption context to the adoption rate among those exposed to the technology. The paper uses the ATE estimation framework to derive consistent nonparametric and parametric estimators of population adoption rates and their determinants and applies the results to consistently estimate the population adoption rates and determinants of the NERICA (New Rice for Africa) rice varieties in Cote d'ivoire.
Traditional Teaching Methods vs. Teaching through a Game Board In principles of accounting (1) course
Creators: name: Rahmani, Ali
Publisher: name: figshare
Year: 2020
Subjects: subject: 150103 Financial Accounting
subject: FOS: Economics and business

description: In the 80s and 90s, accounting education received much criticism from accounting bodies. Therefore, since 1990, the accounting profession has given ever-increasing focus and attention to the effectiveness and nature of accounting education and moving to new & innovative teaching approaches (Smalt & Seldon, 2005). Accounting Education Change Commission (1992) emphasized the importance of introductory accounting courses as a basis for success in subsequent courses. This commission highlighted that Students' involvement should be promoted by methods such as games, simulations, and group projects and students should be active learner.
China's New Rural Income Support Policy: Impact on Grain Production and Rural Income Inequality
Creators: name: Heerink, Nico
name: Kuiper, Marijke H.
name: Xiaoping, Shi
name: Heerink, Nico
name: Kuiper, Marijke H.
name: Xiaoping, Shi
Publisher: name: Unknown
Year: 2006
Subjects: subject: Consumer/Household Economics
subject: Crop Production/Industries
subject: income policy
subject: grain production
subject: income inequality
subject: villages
subject: CGE model
subject: China

description: The impact of China's new rural income support policy and recent price trends on grain production and rural income inequality is assessed for two villages with different degrees of market access in Northeast Jiangxi Province. Two village-level general equilibrium models are used to analyze household decision making and interactions between households within these villages. Parameter estimation and model calibration is based on data collected during an extensive survey held in these villages in the year 2000. The household classification used in these models allows us to draw conclusions that are relevant for many other villages and regions in China. Simulation results show that the income support policy does not reach its goal of promoting grain production. The increased incomes allow farm households to buy more inputs for livestock production, which is a more profitable activity. Moreover, because leisure is valued higher with increasing incomes, farmers tend to switch to less intensive rice production. Selling of rice outside the villages declines more than rice production due to the higher own consumption of households. We further find that agricultural tax abolition has a much larger impact on incomes and production than the direct income support in 2004. Both measures tend to reduce income inequalities within villages, because the richest household groups (who are more involved in off-farm employment) benefit less. Tax abolition, however, tends to widen income inequalities between villages, because the absolute income gain is much larger in relatively rich villages. The switch from rice production towards more profitable activities like livestock production is therefore much stronger in these villages.
Phase Transition with the Berezinskii--Kosterlitz--Thouless Singularity in the Ising Model on a Growing Network
Creators: name: Bauer, M.
name: Coulomb, S.
name: Dorogovtsev, S. N.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider the ferromagnetic Ising model on a highly inhomogeneous network created by a growth process. We find that the phase transition in this system is characterised by the Berezinskii--Kosterlitz--Thouless singularity, although critical fluctuations are absent, and the mean-field description is exact. Below this infinite order transition, the magnetization behaves as $exp(-const/\sqrt{T_c-T})$. We show that the critical point separates the phase with the power-law distribution of the linear response to a local field and the phase where this distribution rapidly decreases. We suggest that this phase transition occurs in a wide range of cooperative models with a strong infinite-range inhomogeneity. {\em Note added}.--After this paper had been published, we have learnt that the infinite order phase transition in the effective model we arrived at was discovered by O. Costin, R.D. Costin and C.P. Grunfeld in 1990. This phase transition was considered in the papers: [1] O. Costin, R.D. Costin and C.P. Grunfeld, J. Stat. Phys. 59, 1531 (1990); [2] O. Costin and R.D. Costin, J. Stat. Phys. 64, 193 (1991); [3] M. Bundaru and C.P. Grunfeld, J. Phys. A 32, 875 (1999); [4] S. Romano, Mod. Phys. Lett. B 9, 1447 (1995). We would like to note that Costin, Costin and Grunfeld treated this model as a one-dimensional inhomogeneous system. We have arrived at the same model as a one-replica ansatz for a random growing network where expected to find a phase transition of this sort based on earlier results for random networks (see the text). We have also obtained the distribution of the linear response to a local field, which characterises correlations in this system. We thank O. Costin and S. Romano for indicating these publications of 90s.
description: 5 pages, 2 figures. We have added a note indicating that the infinite order phase transition in the effective model we arrived at was discovered in the work: O. Costin, R.D. Costin and C.P. Grunfeld, J. Stat. Phys. 59, 1531 (1990). Appropriate references to the papers of 90s have been added
[Letter from Fredrik Christian Emil Børgesen]
Creators: name: Børgesen, Fredrik Christian Emil
Publisher: name: Unknown
Year: 1907
Subjects: Martinsen

description: Expresses gratitude for an identification. Dr. Martinsen at the Zoological Museum says that the calcareous algae is a Foraminifer, and that it belongs to the genus [Sypsina] which is closely related to the red [Polytrema]. The species has not been identified.
An open source code for Causal Dynamical Triangulations without preferred foliation in (1+1)-dimensions with elementary expositions
Creators: name: Damodar Rajbhandari
Publisher: name: figshare
Year: 2020
Subjects: subject: 10505 Mathematical Aspects of Quantum and Conformal Field Theory, Quantum Gravity and String Theory
subject: FOS: Mathematics

description: Causal Dynamical Triangulations (CDT) is an approach to Quantum Gravity based on the sum over histories line of research which gives a quantization of classical Einstein gravity using a discrete approximation to the gravitational path integral, and spacetimes are approximated by Minkowskian equilateral triangles. This approach was developed by Renate Loll, Jan Ambjørn, and Jerzy Jurkiewicz. We have used a more recent version of CDT, called CDT without preferred foliation, to write a numerical simulation of quantum spacetimes in (1+1) dimensions. This report comprises the detailed derivation of the model and the numerical implementation from how we can initialize triangulated spacetime in the form of a data structure to MonteCarlo moves. Finally, we prove that our implemented code does work up to where we ended up.
Autonomous Interference Mapping for Industrial IoT Networks over Unlicensed Bands
Creators: name: Grimaldi, Simone
name: Mahmood, Aamir
name: Hassan, Syed Ali
name: Hancke, Gerhard Petrus
name: Gidlund, Mikael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: Information Theory (cs.IT)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: The limited coexistence capabilities of current Internet-of-things (IoT) wireless standards produce inefficient spectrum utilization and mutual performance impairment. The entity of the issue escalates in industrial IoT (IIoT) applications, which instead have stringent quality-of-service requirements and exhibit very-low error tolerance. The constant growth of wireless applications over unlicensed bands mandates then the adoption of dynamic spectrum access techniques, which can greatly benefit from interference mapping over multiple dimensions of the radio space. In this article, the authors analyze the critical role of real-time interference detection and classification mechanisms that rely on IIoT devices only, without the added complexity of specialized hardware. The trade-offs between classification performance and feasibility are analyzed in connection with the implementation on low-complexity IIoT devices. Moreover, the authors explain how to use such mechanisms for enabling IIoT networks to construct and maintain multidimensional interference maps at run-time in an autonomous fashion. Lastly, the authors give an overview of the opportunities and challenges of using interference maps to enhance the performance of IIoT networks under interference.
description: 7 figures, 1 table, final version to appear in IEEE Industrial Electronics Magazine
Taft, Robert F.: A history of the liturgy of St. John Chrysostom
Creators: name: Thiermeyer, Andreas-Abraham
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 77 (1993): Oriens christianus, Band 77
Bounding the fidelity of quantum many-body states from partial information
Creators: name: Fadel, Matteo
name: Aloy, Albert
name: Tura, Jordi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We formulate an algorithm to lower bound the fidelity between quantum many-body states only from partial information, such as the one accessible by few-body observables. Our method is especially tailored to permutationally invariant states, but it gives nontrivial results in all situations where this symmetry is even partial. This property makes it particularly useful for experiments with atomic ensembles, where relevant many-body states can be certified from collective measurements. As an example, we show that a $ξ^2\approx-6\;\text{dB}$ spin squeezed state of $N=100$ particles can be certified with a fidelity up to $F=0.999$, only from the measurement of its polarization and of its squeezed quadrature. Moreover, we show how to quantitatively account for both measurement noise and partial symmetry in the states, which makes our method useful in realistic experimental situations.
description: comments are welcome
Plasma-balls in large N gauge theories and localized black holes
Creators: name: Aharony, Ofer
name: Minwalla, Shiraz
name: Wiseman, Toby
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We argue for the existence of plasma-balls - meta-stable, nearly homogeneous lumps of gluon plasma at just above the deconfinement energy density - in a class of large N confining gauge theories that undergo first order deconfinement transitions. Plasma-balls decay over a time scale of order N^2 by thermally radiating hadrons at the deconfinement temperature. In gauge theories that have a dual description that is well approximated by a theory of gravity in a warped geometry, we propose that plasma-balls map to a family of classically stable finite energy black holes localized in the IR. We present a conjecture for the qualitative nature of large mass black holes in such backgrounds, and numerically construct these black holes in a particular class of warped geometries. These black holes have novel properties; in particular their temperature approaches a nonzero constant value at large mass. Black holes dual to plasma-balls shrink as they decay by Hawking radiation; towards the end of this process they resemble ten dimensional Schwarzschild black holes, which we propose are dual to small plasma-balls. Our work may find practical applications in the study of the physics of localized black holes from a dual viewpoint.
description: harvmac, 33 pages + 7 appendices + 14 figures; program code downloadable from http://schwinger.harvard.edu/~wiseman/IRblackholes ; v2: minor changes ; v3: refs added, minor changes
Extraction of rare earth elements from grey mud using hydrochloric acid
Creators: name: Salvesen, Malin
Publisher: name: Zenodo
Year: 2019

description: The Bayer process used for production of alumina is not very sustainable, with a large production of the residue red mud. The residue poses significant environmental challanges with is storage in landfills. An alternative, more sustainable production route is via the Pedersen process. This process is researched as a part of an EU-project, ensureal, with the main goal of having zero waste production of alumina in Europe. A part of this is to investigate the possibility of recovering rare earth elements (REEs) from one of the byproducts of the process, grey mud. This thesis explores the feasibility of REEs recovery from grey mud though literature, thermodynamics and experimental work. Additionaly, it forms a basis for possible further work on the topic.
Classical evolution of fractal measures generated by a scalar field on the lattice
Creators: name: Antoniou, N. G.
name: Diakonos, F. K.
name: Saridakis, E. N.
name: Tsolias, G. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Computational Physics (physics.comp-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the classical evolution of a $ϕ^4$ scalar field theory, using in the initial state random field configurations possessing a fractal measure expressed by a non-integer mass dimension. These configurations resemble the equilibrium state of a critical scalar condensate. The measures of the initial fractal behavior vary in time following the mean field motion. We show that the remnants of the original fractal geometry survive and leave an imprint in the system time averaged observables, even for large times compared to the approximate oscillation period of the mean field, determined by the model parameters. This behavior becomes more transparent in the evolution of a deterministic Cantor-like scalar field configuration. We extend our study to the case of two interacting scalar fields, and we find qualitatively similar results. Therefore, our analysis indicates that the geometrical properties of a critical system initially at equilibrium could sustain for several periods of the field oscillations in the phase of non-equilibrium evolution.
description: 13 pages, 13 figures, version published at Int. J. Mod. Phys. A
The Iron Line Background
Creators: name: Brusa, Marcella
name: Gilli, Roberto
name: Comastri, Andrea
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the presence of iron line emission among faint X-ray sources identified in the 1Ms Chandra Deep Field South and in the 2Ms Chandra Deep Field North. Individual source spectra are stacked in seven redshift bins over the range z=0.5-4. We find that iron line emission is an ubiquitous property of X-ray sources up to z~3. The measured line strengths are in good agreement with those expected by simple pre-Chandra estimates based on X-ray background synthesis models. The average rest frame equivalent width of the iron line does not show significant changes with redshift.
description: 5 pages, 2 figures, ApJ Letters in press (include emulateapj.sty)
EVALUATING POSTHARVEST INJURY TO FRESH MARKET TOMATOES
Creators: name: Campbell, D.T.
name: Prussia, Stanley E.
name: Shewfelt, R.L.
name: Campbell, D.T.
name: Prussia, Stanley E.
name: Shewfelt, R.L.
Publisher: name: Unknown
Year: 1986
Subjects: Agribusiness

description: Components of a single postharvest handling system (from harvest through the packinghouse) for fresh tomatoes are evaluated in terms of injuries which lead to losses of tomatoes. Immediate evidence, as well as delayed evidence of injury is included in the evaluation. A flow diagram and description of the system are provided with suspect components labeled. Suggestions for improving these components are given based on the findings of the study.
VLT-ISAAC 3-5 micron spectroscopy of embedded young low-mass stars. III. Intermediate-mass sources in Vela
Creators: name: Thi, W. F.
name: van Dishoeck, E. F.
name: Dartois, E.
name: Pontoppidan, K. M.
name: Schutte, W. A.
name: Ehrenfreund, P.
name: d'Hendecourt, L.
name: Fraser, H. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We performed a spectroscopic survey toward five intermediate-mass class I YSOs located in the Southern Vela molecular cloud in the L and M bands at resolving powers 600-800 up to 10,000, using the Infrared Spectrometer and Array Camera mounted on the VLT-ANTU. Lower mass companion objects were observed simultaneously in both bands. Solid H2O at 3 micron is detected in all sources, including the companion objects. CO ice at 4.67 micron is detected in a few main targets and one companion object. One object (LLN 19) shows little CO ice but strong gas-phase CO ro-vibrational lines in absorption. The CO ice profiles are different from source to source. The amount of water ice and CO ice trapped in a water-rich mantle may correlate with the flux ratio at 12 and 25 micron. The abundance of H2O-rich CO likely correlates with that of water ice. A weak feature at 3.54 mu attributed to solid CH3OH and a broad feature near 4.62 mu are observed toward LLN17, but not toward the other sources. The derived abundances of solid CH3OH and OCN- are ~10% and ~1% of the H2O ice abundance respectively. The H2O optical depths do not show an increase with envelope mass, nor do they show lower values for the companion objects compared with the main protostar. The line-of-sight CO ice abundance does not correlate with the source bolometric luminosity. Comparison of the solid CO profile toward LLN17, which shows an extremely broad CO ice feature, and that of its lower mass companion at a few thousand AU, which exhibits a narrow profile, together with the detection of OCN- toward LLN17 provide direct evidences for local thermal processing of the ice.
description: Replace wrong files. Accepted by A&A, 22 pages, 18 figures
Model Policy on Open Science for Research Performing Organisations (RPOs)
Creators: name: Angelaki, Marina
Publisher: name: Zenodo
Year: 2021
Subjects: open science
policy template
RPO

description: The present model policy aims to assist Research Performing Organisations (RPOs) in developing policies for Open Science/ Open Access. The proposed policy aims at aligning institutional policies with the 2012 Recommendation of the European Commission on access to and preservation of scientific information and its 2018 update, the Horizon 2020 Guidelines on the rules of open access to scientific publications and research data, the Proposal for a Regulation of the European Parliament and the Council establishing Horizon Europe- the framework programme for Research and Innovation, laying down its rules for participation and dissemination (COM/2018/435 final) and the Proposal for a Decision of the European Parliament and of the Council on establishing the specific programme implementing Horizon Europe- the Framework Programme for Research and Innovation (COM/2018/436 final) and takes into consideration important developments at EU-level related to Open Science/ Open Access such as the 2016 European Council Conclusions on the transition towards an Open Science system, the “Plan S” and “cOAlition S”, the developments of the European Open Science Cloud (EOSC) and in particular the EOSC Strategic Research and Innovation Agenda, the action lines of the European Open Science Policy Platform, the Communication “A new ERA for Research and Innovation” and the 2019 EU Directive on open data and the re-use of public sector information, the Report “Towards a 2030 Vision on the Future of Universities in Europe”. In addition, the document also takes into consideration other related reports from university associations like EUA’s “Perspectives on the new European Research Area from the university sector” and “Universities without walls: A vision for 2030”, the Guild of European research intensive universities “Looking to the Future: the Guild’s Vision for Europe’s Universities” and other associations like the Science Europe practical guide to the “International Alignment of Research Data Management”. The model policy has been prepared as part of a toolkit for policy makers on Open Science and Open Access in the context of the EU-funded OpenAIRE Advance project that supported Open Access/ Open Data mandates in Europe. The proposed policy draws heavily on the UNESCO Open Science policy development process and UNESCO Open Access policy development guidelines, the MedOANet guidelines for Open Access, PASTEUR4OA Toolkit and Policy Guidelines, the RECODE project policy recommendations for Open Access policies to research data, the LEARN project Model Research Data Management Policy, and the SPARC Europe report on Open Data and Open Science policies in Europe.
Dynamical Phase Diagram of Ultracold Josephson Junctions
Creators: name: Xhani, K.
name: Galantucci, L.
name: Barenghi, C. F.
name: Roati, G.
name: Trombettoni, A.
name: Proukakis, N. P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We provide a complete study of the phase diagram characterising the distinct dynamical regimes emerging in a three-dimensional Josephson junction in an ultracold quantum gas. Considering trapped ultracold superfluids separated into two reservoirs by a barrier of variable height and width, we analyse the population imbalance dynamics following a variable initial population mismatch. We demonstrate that as the chemical potential difference is increased, the system transitions from Josephson plasma oscillations to either a dissipative (in the limit of low and narrow barriers) or a self-trapped regime (for large and wider barriers), with a crossover between the dissipative and the self-trapping regimes which we explore and characterize for the first time. This work, which extends beyond the validity of the standard two-mode model, connects the role of the barrier width, vortex rings and associated acoustic emission with different regimes of the superfluid dynamics across the junction, establishing a framework for its experimental observation, which is found to be within current experimental reach.
The momentum map for nonholonomic field theories with symmetry
Creators: name: Vankerschaver, Joris
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 70S05; 70F25; 53D20

description: In this note, we introduce a suitable generalization of the momentum map for nonholonomic field theories and prove a covariant form of the nonholonomic momentum equation. We show that these covariant objects coincide with their counterparts in mechanics by making the transition to the Cauchy formalism.
RISIS Research Seminar: The role of Multinational firms in the knowledge dynamics of Metropolitan areas
Creators: name: Laurens, Patricia
name: Laredo, Philippe
Publisher: name: Zenodo
Year: 2021
Subjects: RISIS Patents
Multinational firms
knowledge dynamics
RISIS datasets
Metropolitan areas

description: This presentation will focus on the role of large multinational firms (LMF) in the knowledge dynamics of Metropolitan Areas. There has been extensive work about the role of universities and more widely public sector research. Numerous works have studied the relationship between start-up development and their urban/metropolitan environment, from clusters to creative cities. However very few works have questioned the role of multinational firms. Work on multinational firms has mostly focused on the internationalisation of their R&D activities, the factors and conditions that promote or hinder it. Here we reverse the focus and look at places. We focus on one output, patents and more specifically international patents, and look at the role that LMF play in the ‘production’ of Metropolitan Areas. We show that they represent over 80% of all international patents produced worldwide and that this role has increased over the decade. Focusing on the top 948 most inventive Metropolitan areas worldwide (producing altogether more than 99.5% of the worldwide inventions), we propose a first comparative exploration of dynamics between the 2 periods of observation (2010-14 and 2000-04) to better disentangle the contribution of LMF to the knowledge production of Metropolitan areas, the role and evolution of internationalization in the production of Metropolitan areas (using the headquarter country of LMF present in MA inventions) and the nature and evolution of technological specialization (using a very global segmentation in 5 core technological domains). Gaston Heimeriks, Utrecht University, has been involved as discussant.
Koreans in the diaspora : identity development of Korean immigrant students in a multicultural context
Creators: name: Kim, Ihhwa
Publisher: name: University of British Columbia
Year: 2009

description: The objective of this study is to approach the lived experiences and the identity development of Korean immigrant students in Canada. The concept of diaspora suggests to look at the new style of identity in a global world. In order to describe Korean students' transnational experience, the study attempts: 1) to determine the influence of immigration on the development of students' identity, 2) to examine the cultural and racial experience in different situations, 3) to discuss how Korean students situate themselves and develop their self-concepts in relationship to others. The study employed a qualitative method and conducted ten individual, semi-structured interviews. In the study, ten Korean immigrant students were asked about their immigration backgrounds, their experiences at school and home, their friendships with Korean friends and non-Korean friends, and their future plans. My analysis attempts to examine the discrepancy between: 1) how Korean students see themselves, 2) how they think they are viewed by others 3) what they aspire to become in the future. Most Korean students identified themselves as "Korean" while others described themselves as "Asian" or did not wish to identify themselves. However, their self-definitions did not always coincide with how others saw them in different situations. At school, students tended to be seen as Asians by the mainstream, and shared the experience of being victims of racism. This shared experience along with the cultural similarity allowed them to have closer relationships with Asians. However, physical, cultural and historical "invisibility" of Koreans among Asians contributed to create a sense of inferiority. At home, students try to reward their parents' sacrifices by being "successful" at school, planning a future career, as well as maintaining Korean traditions at home. Korean students develop new identities in their country of settlement, but at the same time, they are still mentally connected to their country of origin. The source of Korean identity is readily accessible in a multicultural society, and globalisation facilitates a connection for Koreans to their homeland. The concept of diaspora presents a new look at the minority students' special relationship to their countries of settlement and their country of origin. It can give a deeper understanding of the social reality in which minority students live.
Multiband Photometry of the Blazar PKS 0537-441: A Major Active State in December 2004 - March 2005
Creators: name: Dolcini, A.
name: Covino, S.
name: Treves, A.
name: Palazzi, E.
name: Pian, E.
name: Molinari, E.
name: Chincarini, G.
name: Zerbi, F. M.
name: Rodono, M.
name: Testa, V.
name: Tosti, G.
name: Vitali, F.
name: Antonelli, L. A.
name: Conconi, P.
name: Cutispoto, G.
name: Monfardini, A.
name: Stefanon, M.
name: D'Avanzo, P.
name: Danziger, J.
name: Fernandez-Soto, A.
name: Meurs, E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Multiband VRIJHK photometry of the Blazar PKS 0537-441 obtained with the REM telescope from December 2004 to March 2005 is presented. A major period of activity is found with more than four magnitudes variability in the V filter in 50 days and of 2.5 in 10 days. In intensity and duration the activity is similar to that of 1972 reported by Eggen (1973), but it is much better documented. No clear evidence of variability on time-scale of minutes is found. The spectral energy distribution is roughly described by a power-law, with the weaker state being the softer.
description: 4 pages, 3 figures, A&A letters, in press
[Letter from William Gilson Farlow]
Creators: name: Farlow, William Gilson
Publisher: name: Unknown
Year: 1907

description: Also encloses three specimens from California. Melobesia corticiformis was so named before he read Foslie's revised systematical survey of the Melobesiaceae. Will be attending the Linnean anniversary at Upsala, and will bring some Corallinaceae.
Assessment of Accounting Standard of Retirement Benefit Plans
Creators: name: Rahmani, Ali
Publisher: name: figshare
Year: 2020
Subjects: subject: 150103 Financial Accounting
subject: FOS: Economics and business
subject: 150107 Taxation Accounting

description: Pension as a motivational system by providing future financial security of employees has an important role in their job satisfaction and calmness; despite the importance of financial reporting of pension funds, their accounting standard not been thoroughly investigated. The purpose of this paper is assessing the effectiveness of Iranian Accounting Standard of Retirement benefit plans (No.27) and its overall evaluation using Post Implementation Review and mixed method; in other words, we used questionnaires and interviews for collecting data: 104 collected questionnaires were been analyzed by Fuzzy Delphi method; content analysis was also used to analyze the interviews. The results indicate that Standard No.27 has achieved its goals; Cost-benefit analysis also justifies the application of standard requirements. It is applicable to all pension funds, but approving appropriate accounting standards for other retirement benefit plans is necessary. As well as there are not essential infrastructures for applying Standard NO.27 in Iran. These infrastructures include Actuarial and tax issues, calculating fair value and legal and structural conflicts.
Self Assembled II-VI Magnetic Quantum Dot as a Voltage-Controlled Spin-Filter
Creators: name: Gould, C.
name: Slobodskyy, A.
name: Slobodskyy, T.
name: Grabs, P.
name: Supp, D.
name: Hawrylak, P.
name: Qu, F.
name: Schmidt, G.
name: Molenkamp, L. W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A key element in the emergence of a full spintronics technology is the development of voltage controlled spin filters to selectively inject carriers of desired spin into semiconductors. We previously demonstrated a prototype of such a device using a II-VI dilute-magnetic semiconductor quantum well which, however, still required an external magnetic field to generate the level splitting. Recent theory suggests that spin selection may be achievable in II-VI paramagnetic semiconductors without external magnetic field through local carrier mediated ferromagnetic interactions. We present the first experimental observation of such an effect using non-magnetic CdSe self-assembled quantum dots in a paramagnetic (Zn,Be,Mn)Se barrier.
description: 4 pages, 4 figures
Kinectを用いたダンス学習支援システムの開発
Creators: name: 山内 雅史、篠本 亮
Publisher: name: Zenodo
Year: 2013
Subjects: Kinect、ダンス学習支援

description: 近年において、ダンスは我々にとって身近な存在となりつつある。EXILE, AKB48, K-POP などのアーティストやアイドルのダンスが若者の間で人気を呼び、テレビ ではダンスコンテスト番組が放送されたり、動画サイトでは個人による「踊ってみ た」動画が盛んに投稿されている。教育分野においては、平成 20 年に改定された 新学習指導要領により、小中学校の保健体育の授業でダンスが必修化された。こ のように初心者がダンスを体験する機会は多くなってきている。しかし、ダンス 初心者がしっかりと基礎を身に付ける為のダンスの練習をする場合、どこが良く てどこが悪いのかを独力で判断するのは難しいという問題がある。そのような初 心者を対象としたダンスの指導上の問題に対する解決策の 1 つとして、本研究で は、Kinect を用いてユーザ個人の基礎的なダンス学習を支援するシステムを提案 する。Kinect から得られるユーザの関節情報による振りの判定、ワイヤレスマウ スのクリック機能によるリズム感の測定より、ユーザの踊りに対する改善点の提示 や適切な振り付けの練習への移行をし、目標となる振り付けの習得を試みる。評 価実験を行った結果、提案手法による練習で、半数の被験者が最初の練習時に比 べて、振りの間違いを修正して踊ることができたことを確認した。また、被験者 アンケートでは、提案手法の機能を除いた比較実験用の練習システムに比べて飽 きることなく楽しく練習できたという評価を得られ、ユーザが長時間ダンスを練 習する際の有用性を明らかにすることができた。
CAUSAL FACTORS AFFECTING EXPORT INTENSITY OF U.S. AGRICULTURAL FIRMS
Creators: name: Van Voorthuizen, Hilde
name: O'Rourke, A. Desmond
name: Van Voorthuizen, Hilde
name: O'Rourke, A. Desmond
Publisher: name: Unknown
Year: 2000
Subjects: International Relations/Trade

description: A nationwide survey of exporters of high-value products was conducted in the summer of 1998. The purpose of the survey was to ascertain the extent of activity by U.S. exporters in offshore markets and to identify which firms were most likely to benefit from targeted government assistance programs to firms with different levels of export intensity. Government and private agencies can use this information to plan and monitor government export assistance on a more targeted basis to advance the national goal of expanding value-added agricultural exports. Results revealed that the majority of the firms had export intensities (percent of total sales derived from exports) below 40 percent with respect to their total sales. Firms that were more likely to have low-export intensity included growers, processors, retailers, firms exporting dairy products, and firms exporting to Canada and Mexico. Conversely, among commodity specializations, firms exporting almonds, nuts, pecans, and specialty products, wood products, and seafood were more likely to have high-export intensity.
The Effect of Voluntary Disclosure on Earnings Management Structural Equation Modeling Approach.pdf
Creators: name: Rahmani, Ali
Publisher: name: figshare
Year: 2020
Subjects: subject: 150103 Financial Accounting
subject: FOS: Economics and business

description: Voluntary disclosure of information, coordination, and partnership between the companies and investors improves with increasing the transparency of information and reducing information asymmetry. Voluntary disclosure with reducing opportunities earnings manipulation resulted to improve the quality of financial reporting and increase the confidence level of investors. This study investigates the impact of voluntary disclosure on earnings management in sample of 146 firms listed in the Tehran Stock Exchange during 2009-2013. This research Structural equation modeling was used to survey direct effects and the indirect effects of other variables on earnings management by improving the level of voluntary disclosure. The results show that increasing the level of voluntary disclosure leads to reduced earnings management through manipulation of discretionary accruals and manipulate the actual items .Also the board features and financial performance by improving the level of voluntary disclosure will be reduced earnings management.
Simulating Cosmic Reionization at Large Scales I: the Geometry of Reionization
Creators: name: Iliev, Ilian T.
name: Mellema, Garrelt
name: Pen, Ue-Li
name: Merz, Hugh
name: Shapiro, Paul R.
name: Alvarez, Marcelo A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first large-scale radiative transfer simulations of cosmic reionization, in a simulation volume of (100/h Mpc)^3, while at the same time capturing the dwarf galaxies which are primarily responsible for reionization. We achieve this by combining the results from extremely large, cosmological, N-body simulations with a new, fast and efficient code for 3D radiative transfer, C^2-Ray. The resulting electron-scattering optical depth is in good agreement with the first-year WMAP polarization data. We show that reionization clearly proceeded in an inside-out fashion, with the high-density regions being ionized earlier, on average, than the voids. Ionization histories of smaller-size (5 to 10 comoving Mpc) subregions exibit a large scatter about the mean and do not describe the global reionization history well. The minimum reliable volume size for such predictions is ~30 Mpc. We derive the power-spectra of the neutral, ionized and total gas density fields and show that there is a significant boost of the density fluctuations in both the neutral and the ionized components relative to the total at arcminute and larger scales. We find two populations of HII regions according to their size, numerous, mid-sized (~10 Mpc) regions and a few, rare, very large regions tens of Mpc in size. We derive the statistical distributions of the ionized fraction and ionized gas density at various scales and for the first time show that both distributions are clearly non-Gaussian. (abridged)
description: Comments: 17 pages, 17 figures, replaced to match the published version in MNRAS. Movies and higher resolution figures can be found at http://www.cita.utoronto.ca/~iliev/research.html
Strong 1-Boundedness of Unimodular Free Orthogonal Quantum Groups
Creators: name: Elzinga, Floris
Publisher: name: arXiv
Year: 2020
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics

description: Recently, Brannan and Vergnioux showed that the free orthogonal quantum group factors $\mathcal{L}\mathbb{F}O_M$ have Jung's strong 1-boundedness property, and hence are not isomorphic to free group factors. We prove an analogous result for the other unimodular case, where the parameter matrix is the standard symplectic matrix in 2N dimensions $J_{2N}$. We compute free derivatives of the defining relations by introducing self-adjoint generators through a decomposition of the fundamental representation in terms of Pauli matrices, resulting in 1-boundedness of these generators. Moreover, we prove that under certain conditions, one can add elements to a 1-bounded set without losing 1-boundedness. In particular this allows us to include the character of the fundamental representation, proving strong 1-boundedness.
description: 15 pages, comments welcome
Deviation of light curves of gamma-ray burst pulses from standard forms due to the curvature effect of spherical fireballs or uniform jets
Creators: name: Qin, Y. -P.
name: Lu, R. -J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: As revealed previously, under the assumption that some pulses of gamma-ray bursts are produced by shocks in spherical fireballs or uniform jets of large opening angles, there exists a standard decay form of the profile of pulses arising from very narrow or suddenly dimming local (or intrinsic) pulses due to the relativistic curvature effect (the Doppler effect over the spherical shell surface). Profiles of pulses arising from other local pulses were previously found to possess a reverse S-feature deviation from the standard decay form. We show in this paper that, in addition to the standard decay form shown in Qin et al. (2004), there exists a marginal decay curve associated with a local $δ$ function pulse with a mono-color radiation. We employ the sample of Kocevski et al. (2003) to check this prediction and find that the phenomenon of the reverse S-feature is common, when compared with both the standard decay form and the marginal decay curve. We accordingly propose to take the marginal decay curve (whose function is simple) as a criteria to check if an observed pulse could be taken as a candidate suffered from the curvature effect. We introduce two quantities $A_1$ and $A_2$ to describe the mentioned deviations within and beyond the $FWHM$ position of the decay phase, respectively. The values of $A_1$ and $A_2$ of pulses of the sample are calculated, and the result suggests that for most of these pulses their corresponding local pulses might contain a long decay time relative to the time scale of the curvature effect.
description: 24 pages, 7 figures, 1 table accepted for publication in MNRAS
Meta-analysis of Audit Committee Independence and Financial Reporting Quality
Creators: name: Rahmani, Ali
Publisher: name: figshare
Year: 2020
Subjects: subject: 150103 Financial Accounting
subject: FOS: Economics and business

description: The purpose of this paper is Meta-analysis of audit Committee independence and financial reporting quality. In spite of general expectation for positive relationship between audit committee independence and financial reporting quality, the empirical researches reveal several inconsistence conclusions. So, we conduct a meta-analysis of the association between audit independence and financial reporting quality in period of year 2000 to 2013. Although we cannot reliably aggregate results across studies in a statistical sense because of inconsistencies in defining FRQ and the absence of replication studies, quantitative review techniques after considering homogeneity analysis (by within-group Q and between-group Q) yield three conclusions: first the use of different FRQ measures in the AC independence literature explains the variation in results across studies. Second there is no relationship between audit committee independence and “earnings management and quality score”. Third there is positive relationship between audit committee independence and “accrual quality, abnormal return, restatement and fraud”