cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Orthogonal measurements are {\it almost} sufficient for quantum discord of two qubits
Creators: name: Galve, Fernando
name: Giorgi, Gianluca
name: Zambrini, Roberta
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The common use in literature of orthogonal measurements in obtaining quantum discord for two-qubit states is discussed and compared with more general measurements. We prove the optimality of orthogonal measurements for rank 2 states. While for rank 3 and 4 mixed states they are not optimal, we present strong numerical evidence showing that they give the correct quantum discord up to minimal corrections. Based on the connection, through purification with an ancilla, between discord and entanglement of formation (EoF), we give a tight upper bound for the EoF of a $2\otimes N$ mixed state of rank 2, given by an optimal decomposition of 2 elements. We also provide an alternative way to compute the quantum discord for two qubits based on the Bloch vectors of the state.
description: EPL 96, 40005 (2011)
Metastates in mean-field models with random external fields generated by Markov chains
Creators: name: Formentin, M.
name: Kuelske, C.
name: Reichenbachs, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We extend the construction by Kuelske and Iacobelli of metastates in finite-state mean-field models in independent disorder to situations where the local disorder terms are are a sample of an external ergodic Markov chain in equilibrium. We show that for non-degenerate Markov chains, the structure of the theorems is analogous to the case of i.i.d. variables when the limiting weights in the metastate are expressed with the aid of a CLT for the occupation time measure of the chain. As a new phenomenon we also show in a Potts example that, for a degenerate non-reversible chain this CLT approximation is not enough and the metastate can have less symmetry than the symmetry of the interaction and a Gaussian approximation of disorder fluctuations would suggest.
description: 20 pages, 2 figures
title: Resignatio rectoratus illustris et generosi comitis ac Domini , D. Hieronymi Schlick, comitis de Passaun, Domini in Weisskirchen et Schlackenwerda, S. theologiae studiosi. ...
Creators: name: Schlick, Hieronymus von
Publisher: name: Philipps-Universität Marburg
Year: 2025
Subjects: Manuscripts & rare books
Handschriften, seltene Bücher

description: Elektronische Reproduktion von: Resignatio Rectoratvs Illvstris Et Generosi Comitis Ac Domini, D. Hieronymi Schlick, Comitis de Passaun, Domini in Vveisskirchen & Schlackenvverda, S. Theologiæ Studiosi. Item Gratiarvm Actio Eivsdem In Renvnciatione Noui Rectoris inclytæ Academiæ Marpurgensis : Recitata memoriter publice In Collegio Lani Hora septima, die primo Iulij Anno Salutis instauratæ 1578. - Marpurgi : Colbius, 1578. - [11] Seiten : 1 Illustration ; 4°. - 
Standort: Universität Marburg, Universitätsbibliothek. - 
Signatur: VIII B 331 db, 22. - 
Fingerprint: x.t, i-us emm, i-o- C 1578A. - 
Werktitel: Resignatio rectoratus illustris et generosi comitis ac Domini , D. Hieronymi Schlick, comitis de Passaun, Domini in Weisskirchen et Schlackenwerda, S. theologiae studiosi. Item gratiarum actio eiusdem in renunciatione novi rectoris inclytae Academiae Marpurgensis
Anmerkung: Vorlageform der Veröffentlichungsangabe im Kolophon: Excusa Marpurgi per Augvstinvm Colbivm Anno Domini Serv: Nostri. 1578. - 
Schlussvignette. - 
Bei der Illustration handelt es sich um einen Holzschnitt. - 
Bibliographischer Nachweis: Verzeichnis der im deutschen Sprachbereich erschienenen Drucke des 16. Jahrhunderts, S 3020. - 
(Hassiaca)

Digitalisiert 2025
The Effects of Sectoral Decline on the Employment Relationship
Creators: name: Idson, Todd
name: Valletta, Robert
Publisher: name: Columbia University
Year: 1993
Subjects: Labor economics

description: This paper investigates tenure effects on employee retention under varying labor market condition. We develop simple models of the likelihood of employer default (through early dismissals) on delayed payment and specific human capital contracts, and the predicted tenure pattern in these defaults under adverse conditions. The empirical implications of the models are investigated using competing risks analyses of tenure effects on recall and new job acceptance applied to layoff unemployment spell data from Waves XV and XVI (1982-83) of the Panel Study of Income Dynamics. The results indicate that adverse conditions (sectoral employment decline and unemployment) significantly reduce the positive tenure effect on recall probabilities in the 1983 data. This result is consistent with firm default on delayed payment contracts, but may also reflect the effect of technological changes that lower the value of firm-specific investments.
Improving smoothed particle hydrodynamics with an integral approach to calculating gradients
Creators: name: Garcia-Senz, Domingo
name: Cabezon, Ruben M.
name: Escartin, Jose Antonio
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: In this paper we develop and test a fully conservative SPH scheme based on a tensor formulation that can be applied to simulate astrophysical systems. In the proposed scheme, derivatives are calculated from an integral expression that leads to a tensor (instead of a vectorial) estimation of gradients and reduces to the standard formulation in the continuum limit. The new formulation improves the interpolation of physical magnitudes, leading to a set of conservative equations that resembles those of standard SPH. The resulting scheme is verified using a variety of well-known tests, all of them simulated in two dimensions. We also discuss an application of the proposed tensor method to astrophysics by simulating the stability of a Sun-like polytrope calculated in three dimensions.
description: 15 pages, 12 figures, accepted for publication in Astronomy and Astrophysics; minor changes due to language editing
Combining NLO QCD and Electroweak Radiative Corrections to W boson Production at Hadron Colliders in the POWHEG Framework
Creators: name: Bernaciak, C.
name: Wackeroth, D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The precision measurement of the mass of the $W$ boson is an important goal of the Fermilab Tevatron and the CERN Large Hadron Collider (LHC). It requires accurate theoretical calculations which incorporate both higher-order QCD and electroweak corrections, and also provide an interface to parton-shower Monte Carlo programs which make it possible to realistically simulate experimental data. In this paper, we present a combination of the full ${\cal O}(α)$ electroweak corrections of {\tt WGRAD2}, and the next-to-leading order QCD radiative corrections to $W\to\ellν$ production in hadronic collisions in a single event generator based on the {\tt POWHEG} framework, which is able to interface with the parton-shower Monte Carlo programs {\tt Pythia} and {\tt Herwig}. Using this new combined QCD+EW Monte Carlo program for $W$ production we provide numerical results for total cross sections and kinematic distributions of relevance to the $W$ mass measurement at the Tevatron and the LHC for the processes $pp,p\bar p \to W^\pm \to μ^\pm ν_μ$. In particular, we discuss the impact of EW corrections in the presence of QCD effects when including detector resolution effects.
description: 32 pages, 28 postscript figures, typos fixed, plot on the right-hand side of Fig.12 replaced with results from a higher statistics run, note added
Modeling of the HIV infection epidemic in the Netherlands: A multi-parameter evidence synthesis approach
Creators: name: Conti, Stefano
name: Presanis, Anne M.
name: van Veen, Maaike G.
name: Xiridou, Maria
name: Donoghoe, Martin C.
name: Stengaard, Annemarie Rinder
name: De Angelis, Daniela
Publisher: name: arXiv
Year: 2012
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Multi-parameter evidence synthesis (MPES) is receiving growing attention from the epidemiological community as a coherent and flexible analytical framework to accommodate a disparate body of evidence available to inform disease incidence and prevalence estimation. MPES is the statistical methodology adopted by the Health Protection Agency in the UK for its annual national assessment of the HIV epidemic, and is acknowledged by the World Health Organization and UNAIDS as a valuable technique for the estimation of adult HIV prevalence from surveillance data. This paper describes the results of utilizing a Bayesian MPES approach to model HIV prevalence in the Netherlands at the end of 2007, using an array of field data from different study designs on various population risk subgroups and with a varying degree of regional coverage. Auxiliary data and expert opinion were additionally incorporated to resolve issues arising from biased, insufficient or inconsistent evidence. This case study offers a demonstration of the ability of MPES to naturally integrate and critically reconcile disparate and heterogeneous sources of evidence, while producing reliable estimates of HIV prevalence used to support public health decision-making.
description: Published in at http://dx.doi.org/10.1214/11-AOAS488 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Irreversible Choice of Uncertain Technologies with Network Externalities
Creators: name: Choi, Jay Pil
Publisher: name: Columbia University
Year: 1992
Subjects: Economics

description: This paper explores the problem of sequential and irreversible technology choice in the presence of network externalities when the technologies stochastically evolve over time. Early potential users are shown to adopt an irreversible technology too early compared to the social optimum. The effect of increasing the uncertainty of the technologies on early potential user's decision is analyzed. We find that the sponsor of new emerging technology might choose too safe a research strategy. We also study the consequences of allowing side payments between generations of consumers, and demonstrate that ex post optimal policy can impair ex ante social welfare.
North-South Trade and the Dynamics of Renewable Resources
Creators: name: Chichilnisky, Graciela
Publisher: name: Columbia University
Year: 1993
Subjects: Economics

description: "The global environment can be described by the physical dynamics and the economic use of the earth's resources. It has become, to a certain extent, a North-South issue. Developing countries tend to specialize in the production and the export of goods which deplete environmental resources such as rain forests, or minerals whose combustion leads to the emission of greenhouse gases. Currently two thirds of the exports from Latin America are resources, and resources make an even higher proportion of Africa's exports. Most of these resources are imported and consumed by the industrial countries. For example, most of the world's production of wood pulp is consumed in the industrial countries, as is the petroleum exported by developing countries. The result is that industrial countries account for a large majority of CO~ emissions. The US alone consumes 25-30% of the world's oil production yearly. When trying to define precisely the concept of sustainable development we are led therefore to question the role of international trade. In practical terms: are trade policies based on the traditional comparative advantages of developing countries compatible with environmental preservation? Should the developing countries export more resource and land intensive products such as agricultural goods? Or should a new vision of international trade, one more consistent with the world's environment, replace the old?"
Postal banking in the United States and Japan: A comparative analysis
Creators: name: Kuwayama, Patricia H.
Publisher: name: Columbia University
Year: 1997
Subjects: Economics
Commerce

description: This paper analyzes the experience of the United States postal savings system, and (in less detail) that of Japan, with a view to assessing the past and potential future role of postal savings in Japan. The immense size of Japan's postal savings system - accounting for one-third of household savings deposits and comprising the largest "bank" in the world - means that the question of their disposition is central to any discussion of the future of Japan's financial system as a whole. This study found that demand for postal savings deposits is explained, in both countries, mainly by two variables: price (interest-differentials) and confidence in private banks. Geographical accessibility in rural areas is of less, and diminishing, importance. It is argued that postal banking should be viewed as an alternative to publicly sponsored deposit insurance, as a means to assure households' access to safe and convenient savings and payment services. This implies that reform discussion should focus on the possibility of restructuring postal savings as a "narrow bank", in such as way as to ensure that services are priced to fully reflect costs and risks incurred.
title: Quantifying the Effect of Stable Stratification on Low-Reynolds Number Flow Past a Horizontal Cylinder
Creators: name: Kartchner, Holland
Publisher: name: Utah State University
Year: 2023

description: In this research, we study the behavior of flow around a cylinder in the presence of stable stratification, which refers to variations in density throughout the fluid. This phenomenon is observed in natural and industrial settings. We use computer simulations to analyze how stratification affects the flow patterns created by the cylinder. Specifically, we investigate situations where the stratification is perpendicular to the flow direction, and the wake exhibits two-dimensional characteristics. We use spectral-element method based computational fluids dynamics to simulate the phenomena. During the simulations, we vary two important parameters: the Densimetric Froude Number (Fr) and the Reynolds Number (Re). Fr characterizes the strength of the stratification, while Re represents the flow’s intensity/speed based on the cylinder’s size. We consider a wide range of Fr values from very small to infinity (high density gradient to no change in density), and Re values from 10 to 180. By analyzing the simulations, we measure the drag and lift forces acting on the cylinder, and calculate Strouhal Number of the wake describing the frequency of vortex shedding (the formation and shedding of vortices behind the cylinder). To further classify and understand the flow structures, we employ a technique called Dynamic Mode Decomposition (DMD). DMD identifies the most dominant flow patterns present, with a focus on the shedding rate of vortices when they are observed. Overall, we aim to explore how different flow structures are influenced by the presence of stratification, and how they are suppressed or formed depending on the values of Reynolds Number and Froude Number. This research helps us gain insights into the effects of stratification on flow behavior around cylinders in two-dimensional, stratified flows.
Social Spillovers of Parental Absence: The Classroom Peer Effects of ‘Left-behind’ Children on Household Human Capital Investments in Rural China
Creators: name: Zheng, Xiaodong
name: Zhou, Yanran
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Neuroscience
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: While the human capital consequences of rural-to-urban migration on left-behind children have been well-documented in developing countries, there is limited evidence regarding the social spillovers of parental migration on households without parent-child separation. This study investigates the effects of migration-induced left-behind children on household human capital investments in their non-left-behind peers. Leveraging the random student-class assignment within middle schools in rural China, we find that the share of left-behind children in class has significant negative impacts on household financial and time investments in non-left-behind classmates, especially out-of-school education expenditure. We also find heterogeneous effects demonstrating that the adverse spillovers are relatively larger among students who are boys, in grade nine, and from low socioeconomic status families. Further, our results suggest that exposure to left-behind classmates adversely affects non-left-behind students’ perceived quality of school life, cognitive and noncognitive skills, and their parents’ beliefs about returns of human capital investments. We interpret these findings as candidate mechanisms underlying the associations between parental absence and household investments in non-left-behind children. Our study sheds new light on the ‘costs’ of rural-to-urban migration in sending areas, which include not only welfare loss to families being left behind but negative spillover effects on non-left-behind households.
title: Erudita doctrina, et virtutibus politicis insigni viro, M. Davidi Schmalkaldero Marpurg. consiliario palatino, de novis docturae insignibus titulis et honoribus in Academ. Marpurg. acceptis
Creators: name: Goclenius, Rudolph
name: Kirchner, Hermann
name: Mesomylius, Eberhard
name: Klapmann, Arnold
Publisher: name: Philipps-Universität Marburg
Year: 2025
Subjects: Lyrik
Manuscripts & rare books
Handschriften, seltene Bücher
Literatur
Festschrift
Gelegenheitsschrift:Promotion

description: Elektronische Reproduktion von: Erudita Doctrina, Et Virtutibus Politicis insigni viro, M. Davidi Schmalkaldero Marpvrg. Consiliario Palatino, De Novis Doctvrae Insignibus Titulis et honoribus in Academ. Marpurg. acceptis : 11. Septembr. Anno XCVI. / Gratulantur Amici. - Marpurgi : typis Pauli Egenolphi, Anno 1596. - [8] Seiten ; 4°. - 
Standort: Universität Marburg, Universitätsbibliothek. - 
Signatur: VIII B 331 db, 22. - 
Fingerprint: s.n! t.t, m.s, s.um C 1596A. - 
Werktitel: Erudita doctrina, et virtutibus politicis insigni viro, M. Davidi Schmalkaldero Marpurg. consiliario palatino, de novis docturae insignibus titulis et honoribus in Academ. Marpurg. acceptis. - 
Bibliographischer Nachweis: Verzeichnis der im deutschen Sprachbereich erschienenen Drucke des 16. Jahrhunderts, ZV 5391. - 
VD16: VD0038660. - 
ST16: i000873. - 
ST16: SBB16. - 
(Hassiaca)

Digitalisiert 2025
On the zero-field orbital magnetic susceptibility of Bloch electrons in graphene-like solids: Some rigorous results
Creators: name: Savoie, Baptiste
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Starting with a nearest-neighbors tight-binding model, we rigorously investigate the bulk zero-field orbital susceptibility of a non-interacting Bloch electrons gas in graphene-like solids at fixed temperature and density of particles. In the zero-temperature limit and in the semiconducting situation, we derive a complete expression which holds for an arbitrary number of bands with possible degeneracies. In the particular case of a two-bands gapped model, all involved quantities are explicitly written down. Besides the formula that we obtain have the special feature to be suitable for numerical computations since it only involves the eigenvalues and associated eigenfunctions of the Bloch Hamiltonian, together with the derivatives (up to the second order) w.r.t. the quasi-momentum of the matrix-elements of the Bloch Hamiltonian. Finally we give a simple application for the two-bands gapped model by considering the case of a dispersion law which is linear w.r.t. the quasi-momentum in the gapless limit. Through this instance, the origin of the singularity, which expresses as a Dirac delta function of the Fermi energy, implied by the McClure's formula in purely monolayer graphene is discussed.
description: 28 pages. Some references added and misprints corrected. Accepted for publication in JMP
Production of Human Capital And the Lifecycle of Earnings
Creators: name: Mincer, Jacob
Publisher: name: Columbia University
Year: 1993
Subjects: Economics

description: After a brief summary of Ben Porath's 1967 model, I enquire into the empirical validity and some implications of his insights. Section 2 is an attempt to answer the question: Are the shapes and magnitudes of growth in wage profiles largely attributable to human capital investments? Section 3 tests the proposition that over the working age capacity wages (i.e. wages before netting out investment) decline before observed wages do. Implied timing of labor supply provides the test. The findings shed light on developments in the U.S. labor market in the past several decades. In section 4 some implications are drawn from Ben-Porath's model for interpersonal differences and historical changes in life-cycle human capital investments. The positive correlation between schooling and training, predicted by the model is found in cross sections. It also shows up in parallel movements in schooling and training in the 1980's as the demand for human capital increased. Once again, observed U.S. patterns are highlighted.
Molecular and functional characterization of cardiac Cav3.2 T-type calcium channels
Creators: name: David, Laurence Sahagun
Publisher: name: University of British Columbia
Year: 2011

description: T-type calcium (Ca²⁺) channels contribute to the normal development of the heart and are also implicated in pathophysiological states such as cardiac hypertrophy. Functionally distinct Cav3 T-type Ca²⁺ channel isoforms can be generated by alternative splicing from each of three different Cav3 genes (Cav3.1, Cav3.2 and Cav3.3), although it remains to be described whether specific splice variants are associated with developmental stages and pathological conditions. Using full length cDNA generated from rat cardiac tissues, this study identified ten major regions of alternative splicing and systematically identified alternative splice variants of cardiac Cav3.2 channels. Quantitative real-time PCR analysis on the mRNA expression of the most common variants revealed preferential expression of Cav3.2(-25) splice variant channels in the newborn rat heart, whereas in the adult heart approximately equal levels of expression of both (+25) and (-25) exon variants was observed. In the adult stage of hypertensive rats, an increase in overall Cav3.2 mRNA expression and a shift towards the expression of Cav3.2(+25) containing channels as the predominant form was observed. This is the first evidence to show that cardiac Cav3.2 is subject to considerable splicing. Moreover, this thesis is also the first study to show developmental and pathological changes in expression of specific splice variants of the Cav3.2 channels. The biophysical characteristics of cloned Cav3.2 splice variants and T-type Ca²⁺ currents from dissociated cultured newborn ventricular myocytes were investigated using whole cell patch clamp analysis. This study showed variant-specific voltage-dependent facilitation (VDF) of Cav3.2 channels attributed to the exclusion of exon 25 in Cav3.2 transcripts. Lastly, this thesis is the first to provide evidence on VDF of T-type currents in rat ventricular myocytes.
Ware ware nihonjin but we're not all alike: How Japanese managers champion innovation
Creators: name: Beechler, Schon
name: Shane, Scott
name: Taylor, Sully
Publisher: name: Columbia University
Year: 1995
Subjects: Economics
Commerce

description: This paper, using a study based on a survey of 678 managers in 8 Japanese firms, examines the similarities and differences in the preferred styles of innovation championing that exist across large established Japanese companies. The results of the study show that championing styles vary greatly across Japanese organizations. The implication of this finding is that research on Japanese firms should avoid looking only for similarities which reinforce stereotypes of a "Japanese way" of managing the innovation process.
Identical synchronization of time-continuous chaotic oscillators
Creators: name: Yanchuk, Serhiy
name: Maistrenko, Yuri
name: Mosekilde, Erik
Publisher: name: Weierstrass Institute
Year: 2002
Subjects: subject: chaotic synchronization
subject: coupled oscillators
subject: Roessler oscillators
subject: 34C15
subject: 34D05
subject: 34D20

description: Considering a system of two coupled identical chaotic oscillators, the paper first establishes the conditions of transverse stability for the fully synchronized chaotic state. Periodic orbit threshold theory is applied to determine the bifurcations through which low-periodic orbits embedded in the fully synchronized state lose their transverse stability, and the appearance of globally and locally riddled basins of attraction is discussed in terms of the sub-, respectively supercritical nature of the riddling bifurcations. We show how the introduction of a small parameter mismatch between the interacting chaotic oscillators causes a shift of the synchronization manifold. The presence of a coupling asymmetry is found to lead to further modifications of the destabilization process. Finally, the paper considers the problem of partial synchronization in a system of four coupled Rössler oscillators.
Time-dependent stabilization in AdS/CFT
Creators: name: Auzzi, Roberto
name: Elitzur, Shmuel
name: Gudnason, Sven Bjarke
name: Rabinovici, Eliezer
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider theories with time-dependent Hamiltonians which alternate between being bounded and unbounded from below. For appropriate frequencies dynamical stabilization can occur rendering the effective potential of the system stable. We first study a free field theory on a torus with a time-dependent mass term, finding that the stability regions are described in terms of the phase diagram of the Mathieu equation. Using number theory we have found a compactification scheme such as to avoid resonances for all momentum modes in the theory. We further consider the gravity dual of a conformal field theory on a sphere in three spacetime dimensions, deformed by a doubletrace operator. The gravity dual of the theory with a constant unbounded potential develops big crunch singularities; we study when such singularities can be cured by dynamical stabilization. We numerically solve the Einstein-scalar equations of motion in the case of a time-dependent doubletrace deformation and find that for sufficiently high frequencies the theory is dynamically stabilized and big crunches get screened by black hole horizons.
description: LaTeX, 38 pages, 13 figures. V2: appendix C added, references added and typos corrected
A numerical method for determining the interface free energy
Creators: name: Hietanen, A.
name: Lucini, B.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We propose a general method (based on the Wang-Landau algorithm) to compute numerically free energies that are obtained from the logarithm of the ratio of suitable partition functions. As an application, we determine with high accuracy the order-order interface tension of the four-state Potts model in three dimensions on cubic lattices of linear extension up to L=56. The infinite volume interface tension is then extracted at each beta from a fit of the finite volume interface tension to a known universal behavior. A comparison of the order-order and order-disorder interface tension at the critical value of beta provides a clear numerical evidence of perfect wetting.
description: 5 pages, 7 figures. Added section on convergence of the algorithm, some clarifications and extra references. Version published on Phys. Rev. E
The US-Japanese stake in a free and open Asian capital market
Creators: name: Summers, Lawrence H.
Publisher: name: Columbia University
Year: 1997
Subjects: Economics

description: "Today, few would seriously doubt that in this new global economy, strong foreign and security relationships are built on strong economic ones. Nor, happily, would many doubt that the Joint United States-Japan Framework for a New Economic Partnership established in 1993 has helped us better understand the common ground that exists between our two countries and, critically, act on that agreement to achieve positive change."
Suzaku Metal Abundance Patterns in the Outflow Region of M82 and the Importance of Charge Exchange
Creators: name: Konami, Saori
name: Matsushita, Kyoko
name: Tsuru, Takeshi Go
name: Gandhi, Poshak
name: Tamagawa, Toru
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We performed spectral analysis of Suzaku data of the galactic disk and outflow regions of the starburst galaxy M82. Thermal modeling of the central disk regions requires at least three temperature components. The Ly$β$ line fluxes of O VIII and Ne X exceed those expected from a plasma in collisional ionization equilibrium. The ratios of Ly$β$/Ly$α$ lines for O VIII and Ne X are higher than those of collisional ionization equilibrium, which may be caused by the process of charge exchange. In the outflow wind region, the spectra are well reproduced with two-temperature thermal models, and we have derived the metal abundances of O, Ne, Mg, and Fe in the outflow. The ratios of O/Fe, Ne/Fe, and Mg/Fe are about 2, 3, and 2, respectively, relative to the solar value determined by Lodders (2003). Since there is no evidence of charge exchange in outflow region, the metal abundances should be more reliable than those in the central region. This abundance pattern indicates that starburst activity enriches the outflow through SN II metal ejection into intergalactic space.
description: 14 pages, 9 figures, accepted for publication in PASJ
Why is there a home bias? An analysis of foreign portfolio equity ownership in Japan
Creators: name: Stulz, René M.
name: Kang, Jun-Koo
Publisher: name: Columbia University
Year: 1995
Subjects: Economics
Commerce

description: This paper uses data on foreign stock ownership in Japan from 1975 to 1991 to examine the determinants of the home bias in portfolio holdings. Existing models of international portfolio choice predicting that foreign investors hold national market portfolios or portfolios tilted towards nigh expected return stocks are inconsistent with the evidence provided in this paper. We document that foreign investors overweight shares of firms in manufacturing industries, large firms, firms with good accounting performance, firms with low unsystematic risk, and firms with low leverage. Controlling for size, there is evidence that small firms that export more have greater foreign owner-snip. Foreign investors do not perform significantly worse than if they held the Japanese market portfolio, however. After controlling for firm size, there is no evidence that foreign ownership is related to expected returns of shares. We show that a model with size-based informational asymmetries and deadweight costs can yield asset allocations consistent with our evidence.
The Japanese system of foreign exchange and trade control, 1950-1964
Creators: name: Takagi, Shinji
Publisher: name: Columbia University
Year: 1996
Subjects: Economics
Commerce

description: This paper will present a summary of how Japan's system of foreign exchange and trade control operated in the early 1950s as well as how it was liberalized from the late 1950s into the early 1960s. As it stands, the paper is largely descriptive and is intended to provide background information for conducting more analytical studies of some of the economic policies of the early post-war period.
Regulation of Financial Sector in Developing Countries: Lessons From the 2008 Financial Crisis
Creators: name: Reddy, Y. V.
Publisher: name: Columbia University
Year: 2009
Subjects: Finance

description: This chapter aims to draw some practical lessons and raises some issues from the 2008 financial crisis for regulation of financial sectors in developing countries. At the time of writing, the crisis is far from over and the aftermath is still unclear. The chapter is divided into five sections. The first section gives an overview of considerations that are important in drawing lessons from the crisis, especially from the point of view of developing economies. The second section addresses the major issues of scope for, and limits to, counter-cyclicality in regulation, in view of the widely perceived need for such an approach to avoid similar crisis in the future. The third section addresses an issue, which has been in focus since late 2008—the idea of comprehensiveness in the regulatory scope of the financial sector. The fourth section explores possible improvements in regulatory structures that are provoked by the recent crisis. The concluding section lists several broader issues that need to be kept in view while considering improvements in regulation of financial sectors for the future.
Analysis of the incompressibility constraint in the Smoothed Particle Hydrodynamics method
Creators: name: Szewc, Kamil
name: Pozorski, Jacek
name: Minier, Jean-Pierre
Publisher: name: arXiv
Year: 2011
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Smoothed particle hydrodynamics is a particle-based, fully Lagrangian, method for fluid-flow simulations. In this work, fundamental concepts of the method are first briefly recalled. Then, we present a thorough comparison of three different incompressibility treatments in SPH: the weakly compressible approach, where a suitably-chosen equation of state is used; and two truly incompressible methods, where the velocity field projection onto a divergence-free space is performed. A noteworthy aspect of the study is that, in each incompressibility treatment, the same boundary conditions are used (and further developed) which allows a direct comparison to be made. Problems associated with implementation are also discussed and an optimal choice of the computational parameters has been proposed and verified. Numerical results show that the present state-of-the-art truly incompressible method (based on a velocity correction) suffer from density accumulation errors. To address this issue, an algorithm, based on a correction for both particle velocities and positions, is presented. The usefulness of this density correction is examined and demonstrated in the last part of the paper.
Identification of Superfluid Phases of 3He in Uniformly Isotropic 98.2% Aerogel
Creators: name: Pollanen, J.
name: Li, J. I. A.
name: Collett, C. A.
name: Gannon, W. J.
name: Halperin, W. P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Superfluid 3He confined to high porosity silica aerogel is the paradigm system for understanding impurity effects in unconventional superconductors. However, a crucial first step has been elusive; exact identification of the microscopic states of the superfluid in the presence of quenched disorder. Using a new class of highly uniform aerogel materials, we report pulsed nuclear magnetic resonance experiments that demonstrate definitively that the two observed superfluid states in aerogel are impure versions of the isotropic and axial p-wave states. The theoretically predicted destruction of long-range orbital order (Larkin-Imry Ma effect) in the impure axial state is not observed.
description: 4 pages, 5 figures, to appear in Phys. Rev. Lett
title: Phenology of the Invasive Balsam Woolly Adelgid, Adelges piceae (Ratz.) (Hemiptera: Adelgidae), on Subalpine Fir in Northern Utah
Creators: name: Rideout, Elizabeth L.
Publisher: name: Utah State University
Year: 2023

description: Balsam woolly adelgid (BWA) is an invasive true fir pest in North America. Native to Europe, BWA was first discovered in Utah attacking subalpine fir in 2017. Recent BWA-caused subalpine fir mortality in northern Utah has prompted the need for baseline biological research to support pest management. Small-bodied and blending easily with its environment, BWA is a challenging pest to detect and study. Phenology, or the timing and characteristics of life stages through the year, of BWA varies depending on elevation and climate and is unstudied in Utah. This research focuses on defining aspects of BWA’s phenology, including the number of annual generations, and exploring an effective detection method to support sustainable management practices.
Bark sampling of infested subalpine fir at five northern Utah study sites was conducted to determine the number of annual generations exhibited by BWA. One full generation and > 50% of a second generation were observed each year with adults in highest abundance in early summer and early fall. Because insect development is dependent on temperature, these data were used in combination with air temperatures recorded at each site to predict the number of annual BWA generations. Using estimated historical and future climate data, the model was used to predict past and future number of generations for northern Utah. Predictions indicated that since 1980, temperatures were suitable for one complete but fewer than two generations at three of the five sites. Within the next several decades, all sites but the warmest are predicted to increase from slightly less than to slightly more than two complete generations. Climate predictions for the warmest site indicate that three complete generations may occur by ~2080.
The use of sticky cards for monitoring immature wind-dispersing BWA was also assessed. Using mesh-covered cards attached horizontally to stakes, crawler captures were high, and bycatch of non-target organisms was low. Timing of crawler abundance peaks aligned with those of bark samples, indicating potential for use in phenological monitoring. These findings will support development of accurate and timely IPM-decision making tools for use by forest managers in the current and future climate of northern Utah.
Na-O anticorrelation and HB. IX. Kinematics of the program clusters. A link between systemic rotation and HB morphology?
Creators: name: Bellazzini, M.
name: Bragaglia, A.
name: Carretta, E.
name: Gratton, R. G.
name: Lucatello, S.
name: Catanzaro, G.
name: Leone, F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use accurate radial velocities for 1981 member stars in 20 Galactic globular clusters, collected within our large survey aimed at the analysis of the Na-O anti-correlation, to study the internal kinematics of the clusters. We performed the first systematic exploration of the possible connections between cluster kinematics and the multiple populations phenomenon in GCs. We did not find any significant correlation between Na abundance and either velocity dispersion or systemic rotation. We searched for systemic rotation in the eight clusters of our sample that lack such analysis from previous works in the literature (NGC2808, NGC5904, NGC6171, NGC6254, NGC6397, NGC6388, NGC6441, and NGC6838). These clusters are found to span a large range of rotational amplitudes, from ~0.0 km/s (NGC6397) to ~13.0 km/s (NGC6441). We found a significant correlation between the ratio of rotational velocity to central velocity dispersion (V_{rot}/sigma_0) and the Horizontal Branch Morphology parameter (B-R)/(B+R+V). V_{rot}/sigma_0 is found to correlate also with metallicity, possibly hinting to a significant role of dissipation in the process of formation of globular clusters. V_{rot} is found to correlate well with (B-R)/(B+R+V), M_V, sigma_0 and [Fe/H]. All these correlations strongly suggest that systemic rotation may be intimately linked with the processes that led to the formation of globular clusters and the stellar populations they host.
description: Accepted for publication on Astronomy & Astrophysics. Pdflatex, 16 pages, 16 pdf figures. The position angles of the rotation axes have been corrected, since the values reported in the previous version were erroneous. The results of the analysis are unchanged. The manuscript has also been processed by a language editor
The Gaussian free field and Hadamard's variational formula
Creators: name: Hedenmalm, Haakan
name: Nieminen, Pekka J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: We relate the Gaussian free field on a planar domain to the variational formula of Hadamard which explains the change of the Green function under a perturbation of the domain. This is accomplished by means of a natural integral operator related to Hadamard's formula.
description: 9 pages
International Financial Integration and Japanese Economic Performance
Creators: name: Lane, Philip R.
Publisher: name: Columbia University
Year: 2009
Subjects: Commerce

description: Since 1980, Japan has experienced a boom-bust-recovery cycle in its level of international financial integration that resembles the shifts in its domestic economic activity. Accordingly, we investigate the links between international financial integration and Japanese macroeconomic performance. In addition to formal tests of the impact of international financial integration, we explore the inter-relation between international financial integration and the behaviour of the yen. We pay special attention to the unusual behaviour of Japanese official reserves. Finally, we seek to evaluate the broad impact of external liberalisation on the Japanese financial system.
Bubbles in Japan's stock market: A macroeconomic analysis
Creators: name: Sato, Kazuo
Publisher: name: Columbia University
Year: 1995
Subjects: Economics
Commerce

description: Since the 1950s, Japan's stock market has gone into bubbles every ten years or so (early 50s, early 60s, and early 70s). Then, the 1980s saw a strong bubble that went on for several years (late 1982 to the end of 1989). What caused this bubble to be so strong? Our analysis of the fundamental equation reveals that the key factor was the nominal interest rate which continued to decline until the late 1980s owing to the extremely relaxed monetary policy pursued by the Bank of Japan. Investors' stock price expectations added to the effect of low interest rates. We show that investors tend to forecast fluctuations on the real side two to three quarters ahead of time. The bubble crashed when investors' expectations collapsed. Since then, investors have remained bearish and the stock market has remained in the doldrums.
title: Collegii medici hoc tempore decanus Rudolfus Guilielmus Crausius, phil. & med. D. prax. & chim. profess. publ. collegii laudati senior, lectori benevolo S. D. P.
Creators: name: Crause, Rudolf Wilhelm
Publisher: name: Philipps-Universität Marburg
Year: 2025
Subjects: Generalities, Science
Allgemeines, Wissenschaft

description: Elektronische Reproduktion von: Collegii Medici hoc tempore Decanus Rvdolfvs Gvilielmvs Cravsivs, Phil. & Med. D. Prax. & Chim. Profess. Publ. Collegii laudati Senior, Lectori benevolo S. D. P.
 - [1713]. - [Jena] : Literis Krebsianis. - 8 Seiten. - 
Standort: Universität Marburg, Universitätsbibliothek. - 
Signatur: VIII B 331 db, 22. - 
Fingerprint: e.i- u-r- u-ut n-a- C 1713Q. - 
Werktitel: Collegii medici hoc tempore decanus Rudolfus Guilielmus Crausius, phil. & med. D. prax. & chim. profess. publ. collegii laudati senior, lectori benevolo S. D. P. - 
Anmerkung: Einladungsschrift zur Disputation des Johann Ludwig Schmid. - 
Erscheinungsjahr nach Datierung am Textende: "Anno M DC CXIII. d. 9. April." . - 
(Hassiaca)

Digitalisiert 2025
Effect of finite terms on the truncation error of Mie series
Creators: name: Neves, Antonio Alvaro Ranha
name: Pisignano, Dario
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The finite sum of the squares of the Mie coefficients is very useful for addressing problems of classical light scattering. An approximate formula available in the literature, and still in use today, has been developed to determine a priori the number of the most significant terms needed to evaluate the scattering cross section. Here we obtain an improved formula, which includes the number of terms needed for determining the scattering cross section within a prescribed relative error. This is accomplished using extended precision computation, for a wide range of commonly used size parameters and indexes of refraction. The revised formula for the finite number of terms can be a promising and valuable approach for efficient modeling light scattering phenomena.
description: 3 pages, 3 figures
Stable Skyrmions in SU(2) Gauged Bose-Einstein Condensates
Creators: name: Kawakami, Takuto
name: Mizushima, Takeshi
name: Nitta, Muneto
name: Machida, Kazushige
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We demonstrate that the three-dimensional Skyrmion, which has remained elusive so far, spontaneously appears as the ground state of $SU$(2) symmetric Bose-Einstein condensates coupled with a non-Abelian gauge field. The gauge field is a three-dimensional analogue of the Rashba spin-orbit coupling. Upon squashing the SO(3) symmetric gauge field to one- or two-dimensional shapes, we find that the ground state continuously undergoes a change from a three-dimensional to a one- or two-dimensional Skyrmion, which is identified by estimating winding numbers and helicity. All of the emerged Skyrmions are physically understandable with the concept of the helical modulation in a unified way. These topological objects might potentially be realizable in two-component BECs experimentally.
description: 5 pages, 3 figures