cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Bounded solutions of fermions in the background of mixed vector-scalar inversely linear potentials
Creators: name: de Castro, Antonio S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The problem of a fermion subject to a general mixing of vector and scalar potentials in a two-dimensional world is mapped into a Sturm-Liouville problem. Isolated bounded solutions are also searched. For the specific case of an inversely linear potential, which gives rise to an effective Kratzer potential in the Sturm-Liouville problem, exact bounded solutions are found in closed form. The case of a pure scalar potential with their isolated zero-energy solutions, already analyzed in a previous work, is obtained as a particular case. The behaviour of the upper and lower components of the Dirac spinor is discussed in detail and some unusual results are revealed. The nonrelativistic limit of our results adds a new support to the conclusion that even-parity solutions to the nonrelativistic one-dimensional hydrogen atom do not exist.
description: 16 pages, 6 figures
THREATS TO HONEY BEE POLLINATORS: A THREAT TO FOOD SUSTAINABILITY AND TRADE
Headings, M. E.
Creators: name: Headings, M. E.
name: Headings, M. E.
Publisher: name: Unknown
Year: 1995
Subjects: Crop Production/Industries
Livestock Production/Industries

description: In the past few years, there has been a significant decline in number of managed honey bee colonies, as well as perhaps unmanaged colonies, in parts of the western hemisphere. Plant pollination by honey bees is valued at billions of dollars to world economies. Therefore, external threats to honey bees can have serious implications on global food supplies. Several important threats are the parasitic bee mites, Varroa jacobsoni (Oudemans) and Acarapis woodi (Rennie), and chemical pesticides. Some efforts to combat these threats include breeding bees for mite resistance, using chemical treatments for mite control, selecting chemical pesticides less hazardous to bees, and exploring non-chemical alternatives for pest control.
Spin-Nematic Vortex States in Cold Atoms
Creators: name: Chen, Li
name: Zhang, Yunbo
name: Pu, Han
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The (pseudo-)spin degrees of freedom greatly enriches the physics of cold atoms. This is particularly so for systems with high spins (i.e., spin quantum number larger than 1/2). For example, one can construct not only the rank-1 spin vector, but also the rank-2 spin tensor in high spin systems. Here we propose a simple scheme to couple the spin tensor and the center-of-mass orbital angular momentum in a spin-1 cold atom system, and show that this leads to a new quantum phase of the matter: the spin-nematic vortex state that features vorticity in an SU(2) spin-nematic tensor subspace. Under proper conditions, such states are characterized by quantized topological numbers. Our work opens up new avenues of research in topological quantum matter with high spins.
Airline delays, congestion internalization and non-price spillover effects of low cost carrier entry
Creators: name: Bendinelli, William E.
name: Bettini, Humberto F. A. J.
name: Oliveira, Alessandro V. M.
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Economics (econ.GN)
subject: FOS: Economics and business

description: This paper develops an econometric model of flight delays to investigate the influence of competition and dominance on the incentives of carriers to maintain on-time performance. We consider both the route and the airport levels to inspect the local and global effects of competition, with a unifying framework to test the hypotheses of 1. airport congestion internalization and 2. the market competition-quality relationship in a single econometric model. In particular, we examine the impacts of the entry of low cost carriers (LCC) on the flight delays of incumbent full service carriers in the Brazilian airline industry. The main results indicate a highly significant effect of airport congestion self-internalization in parallel with route-level quality competition. Additionally, the potential competition caused by LCC presence provokes a global effect that suggests the existence of non-price spillovers of the LCC entry to non-entered routes.
title: Maria Zarębska. Family roots in Sztynort
Creators: name: Lachauer, Ulla
name: Kern, Agata
Publisher: name: Herder-Institut
Year: 2022
Subjects: subject: 943 Geschichte Mitteleuropas; Deutschlands

description: When Maria Zarębska was born, in July 1948, the village of Sztynort was still scarred by war. A few Masurian families had remained living there, but most of the inhabitants – like Maria's parents – were newcomers. Everyone was struggling to survive, to get along with each other, to find their way in socialist Poland. For a child like Maria, all this was "normal." The curious girl later became an avid and perceptive chronicler.
On Hamiltonian flows on Euler-type equations
Creators: name: Kiselev, A. V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: Properties of Hamiltonian symmetry flows on hyperbolic Euler-type Liouvillean equations E' are analyzed. Description of their Noether symmetries assigned to the integrals for these equations is obtained. The integrals provide Miura transformations from E' to the multi-component wave equations E. By using these substitutions, we generate an infinite-Hamiltonian commutative subalgebra A of local Noether symmetry flows on E proliferated by weakly nonlocal recursion operators. We demonstrate that the correlation between the Magri schemes for A and for the induced "modified" Hamiltonian flows B in the symmetry algebra of E' is such that these properties are transferred to B and the recursions for E' are factorized. Two examples associated with the 2D Toda lattice are considered.
description: Submitted to Theoretical & Mathematical Physics, Proc. conf. "Nonlinear Physics: Theory and Experiment III" (Gallipoli 2004). 12 pages, requires diagrams
title: A cartographic approach to spatio-temporal data visualization of events in Visual Analytics applications
Creators: name: Rühl, Alice
Publisher: name: TU Wien
Year: 2014
Subjects: subject: Kartographie
subject: GeoVisualisation
subject: Visual Analytics
subject: Kartographie
subject: GeoVisualisation
subject: Visual Analytics

description: The increasing importance of Visual Analytics, particularly in response to the advent of "big data", calls for greater attention to maps in analytic tools and applications. While maps provide a familiar, understandable interface to underlying data, not enough has been done in the eld of Visual Analytics to advance the design and usage of maps. This study explores the development of map components within multi-view applications using multivariate and zoom-level dependent representations of news event data. Integrated in the system with a timeline, a word cloud and other view components, we consider the traditional "rules" of cartography as well as aspects of human-computer interaction and interactive design research. This allows users to eciently explore complex spatiotemporal data. Our approach was validated by re-developing the mapping component inside STempo, a project developed at the GeoVISTA Center, Pennsylvania State University. We found that the application of cartographic precepts to our spatio-temporal map visualizations aided in the development of more useful visual analytic mapping tools.
QAnswer: Towards Question Answering Search over Websites
Creators: name: Guo, Kunpeng
name: Defretiere, Clement
name: Diefenbach, Dennis
name: Gravier, Christophe
name: Gourru, Antoine
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Question Answering (QA) is increasingly used by search engines to provide results to their end-users, yet very few websites currently use QA technologies for their search functionality. To illustrate the potential of QA technologies for the website search practitioner, we demonstrate web searches that combine QA over knowledge graphs and QA over free text -- each being usually tackled separately. We also discuss the different benefits and drawbacks of both approaches for web site searches. We use the case studies made of websites hosted by the Wikimedia Foundation (namely Wikipedia and Wikidata). Differently from a search engine (e.g. Google, Bing, etc), the data are indexed integrally, i.e. we do not index only a subset, and they are indexed exclusively, i.e. we index only data available on the corresponding website.
Impact of income-detection technology and other factors on aggregate income tax evasion:the case of the United States
Creators: name: Cebula, Richard J.
Publisher: name: PSL Quarterly Review
Year: 2012
Subjects: subject: Evasion, Income Tax Evasion, Income Tax, Tax Evasion, Tax
subject: H24, H26, H31

description: This study empirically investigates the impact of improving income-detectiontechnology, as well as a variety of other factors, on aggregate income taxevasion. The study focuses on the U.S., using available data for the 1975-97 period. The empirical findings indicate that improving income-detection technology appears to have significantly reduced the degree of aggregate income-tax evasion in theU.S. over time. In addition, the estimates indicate that federal income tax evasionappears to be an increasing function not only of the federal personal income tax rate but also of the public's dissatisfaction with government. Furthermore, income taxevasion appears to be a decreasing function both of penalties imposed by the IRS on unpaid taxes and IRS audit rates. JEL Codes: H24, H26, H31
description: PSL Quarterly Review, V. 54, N. 219 (2001)
SCREENING NEW SUGAR-CANE VARIETIES FOR RESISTANCE TO MOTH BORER: THE POSSIBLE EFFECTS OF ENVIRONMENTAL CONDITIONS ON VARIETAL RESISTANCE AND THE NEED FOR AN IPM APPROACH
Creators: name: Gibbs, Ian H.
name: Bellamy, Sandra R.
name: Gibbs, Ian H.
name: Bellamy, Sandra R.
Publisher: name: Unknown
Year: 1995
Subjects: Crop Production/Industries
Food Security and Poverty

description: Twenty-one new and three commercial sugar-cane varieties were screened for posssible resistance to the sugar-cane moth borer Diatraea saccharalis at four different sites. Varietal resistance was evaluated using percentage dead hearts in young canes and percentage joint infestation in mi liable canes. Variety rankings according to both indices of infestation were site specific and in the case of dead heart rankings, time specific. These results are discussed in the context of the impact of environmental factors on varietal resistance and the need for an integrated pest management (IPM) approach to the management of the pest in Barbados.
Diffuse X-rays from the Arches and Quintuplet clusters
Creators: name: Rockefeller, Gabriel
name: Fryer, Chris L.
name: Melia, Fulvio
name: Wang, Q. Daniel
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The origin and initial mass function of young stellar clusters near the Galactic center are still poorly understood. Two of the more prominent ones, the Arches and Quintuplet clusters, may have formed from a shock-induced burst of star formation, given their similar age and proximity to each other. Their unusual mass distribution, however, may be evidence of a contributing role played by other factors, such as stellar capture from regions outside the clusters themselves. Diffuse X-ray emission from these sources provides us with a valuable, albeit indirect, measure of the stellar mass-loss rate from their constituents. Using recent data acquired with Chandra, we can study the nature and properties of the outflow to not only probe the pertinent physical conditions, such as high metallicity, the magnetic field, and so forth, but also to better constrain the stellar distribution within the clusters, in order to identify their formative history. In this paper, we present a set of three-dimensional smoothed particle hydrodynamics simulations of the wind-wind interactions in both the Arches and Quintuplet clusters. We are guided primarily by the currently known properties of the constituent stars, though we vary the mass-loss rates in order to ascertain the dependence of the measured X-ray flux on the assumed stellar characteristics. Our results are compared with the latest observations of the Arches cluster. Our analysis of the Quintuplet cluster may be used as a basis for comparison with future X-ray observations of this source.
description: Added comments to sections 2.1 and 2.2, conclusions unchanged; 29 pages, 17 figures, ApJ accepted
Shared understanding and the effects of culture in the global software development team : a case study
Creators: name: Hsieh, Yvonne Ying-Fan
Publisher: name: University of British Columbia
Year: 2011

description: This thesis describes a qualitative case study whose goal is to characterize certain aspects of shared understanding among members of a globally distributed software development team. The research questions upon which the study is based investigate the effects of intercultural differences on the development of shared understanding in the team. Specifically, the study examines the developers' shared understanding with respect to the development processes and practices, system requirements, technical details, project scheduling, resource management, and a number of other task- and team-related issues. With regard to intercultural differences, the study focuses on the concepts of risks, hierarchy, time, and teamwork, expression of emotion, and communication patterns. The study data is collected through semi-structured interviews and analyzed using a constant-comparison approach. The findings, summarized as a set of propositions, show that intercultural differences, along with other contextual factors (i.e., communication mechanisms and project arrangement) do affect shared understanding in the distributed team. The work described in the thesis helps to provide insight into the coordination and management of distributed software projects, as well as to further an area of research where little previous work has been done.
Arbitration & Conciliation (Amendment) Bill 2019 - An Opinion Vis-À-Vis International Arbitration
Creators: name: Das, Deb Zyoti
name: Rohilla, Bhanu Singh
Publisher: name: figshare
Year: 2020
Subjects: subject: 180121 Legal Practice, Lawyering and the Legal Profession
subject: FOS: Law
subject: 180116 International Law (excl. International Trade Law)
subject: Law
subject: 189999 Law and Legal Studies not elsewhere classified
subject: 180199 Law not elsewhere classified

description: The article is a legislative comment on the Arbitration & Conciliation(Amendment) Bill introduced in 2019 keeping in mind Arbitration in the International context and comparing it with the Amendment Act and the Legislature in Indian context. The new 2019 amendment, envisages major changes which will be discussed in this Article vis-à-vis International Arbitration. The article critically analyzes some of its provisions to understand if it is indeed a step in the right direction for India to become a hub for international arbitration. The analysis and comments in this article are solely and exclusively from the standpoint of international arbitration. Thus the Arbitration and Conciliation Act in India needs to be looked at in reference to both international and principles of Indian law. The uncertainty would arise mainly in context of the rules which the parties frame in the course of arbitration, which have not been codified. Thus this practice must be examined in light of the UNCITRAL rules and Indian Administrative law, (since the Arbitration Tribunal is a quasi-judicial body) and it should then be seen whether the manner of framing rules under the Arbitration Act is as envisaged under the UNCITRAL model law.
Polarization puzzle in B->phi K* and other B->VV at BABAR
Creators: name: Gritsan, Andrei
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: With a sample of about 227 million BB pairs recorded with the BABAR detector we perform a full angular analysis of the decay B0->phi K*0(892). Ten measurements include polarization, phases, and five CP asymmetries. We also observe the decay B0->phi K*0(1430). Polarization measurements are performed with the B->rho K*(892), B->rho rho, B->rho omega decay modes, and limits are set on the B->omega K*(892) decay rates. These measurements help to understand the puzzle of large fraction of transverse polarization observed in B->phi K* decays and allow for new ways to study CP violation and potential new amplitude contributions.
description: 4 pages, 1 postscript figure, in proceedings of ICHEP-2004
title: Energy performance assessment of existing buildings : a case study of LEED for an office building in Austria
Creators: name: Schouchana, Mitchell
Publisher: name: TU Wien
Year: 2014
Subjects: subject: Green Building
subject: energy performance assessment
subject: LEED
subject: Austria

description: About a third of world energy consumption takes place in buildings. Although policy efforts aimed at improving energy efficiency in buildings have been around at least since the 70s, these policies have mainly been applied to new constructions. Nevertheless, substantive gains in energy efficiency are possible in already existing buildings. In fact where public policy has failed to have an impact, voluntary Green Building certification systems have emerged offering a whole building approach to improvements in energy efficiency and environmental sustainability. However, as this thesis will explain, each certification system has adopted different forms of energy performance assessment. One of these, known as benchmarking, involves assessing the energy performance of one building in relation to other similar buildings. This is the method advocated by the American Green Building certification system: Leadership in Energy and Environmental Design (LEED). As LEED has grown in popularity and become an internationally used certification system, it has allowed projects outside the United States to either be benchmarked against similar buildings in the US or to use a local benchmark for their energy performance assessment. This thesis investigates the most coherent strategy for existing office buildings in Austria wishing to perform best in the energy performance assessment component of LEED for Existing Building (LEED EBOM) version 3. In the process, this thesis highlights the problems related with applying a national system of assessment abroad and therefore the need to adopt the system to local conditions. This thesis concludes, based on presently available data, that existing office buildings in Austria perform best when benchmarked against US buildings rather than if the local benchmark were to be used.
Quantum field theory with dynamical boundary conditions and the Casimir effect: Coherent states
Creators: name: Juárez-Aubry, Benito A.
name: Weder, Ricardo
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We have studied in a previous work the quantization of a mixed bulk-boundary system describing the coupled dynamics between a bulk quantum field confined to a spacetime with finite space slice and with timelike boundary, and a boundary observable defined on the boundary. Our bulk system is a quantum field in a spacetime with timelike boundary and a dynamical boundary condition-the boundary observable's equation of motion. Owing to important physical motivations, in such previous work we have computed the renormalized local state polarization and local Casimir energy for both the bulk quantum field and the boundary observable in the ground state and in a Gibbs state at finite, positive temperature. In this work, we introduce an appropriate notion of coherent and thermal coherent states for this mixed bulk-boundary system, and extend our previous study of the renormalized local state polarization and local Casimir energy to coherent and thermal coherent states. We also present numerical results for the integrated Casimir energy and for the Casimir force.
description: The paper has been edited. New numerical results have been added in Section 5
Exclusive Photoproduction of the Cascade (Xi) Hyperons
Creators: name: Price, J. W.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We report on the first measurement of exclusive Xi-(1321) hyperon photoproduction in gamma p --> K+ K+ Xi- for 3.2 < E(gamma) < 3.9 GeV. The final state is identified by the missing mass in p(gamma,K+ K+)X measured with the CLAS detector at Jefferson Laboratory. We have detected a significant number of the ground-state Xi-(1321)1/2+, and have estimated the total cross section for its production. We have also observed the first excited state Xi-(1530)3/2+. Photoproduction provides a copious source of Xi's. We discuss the possibilities of a search for the recently proposed Xi5-- and Xi5+ pentaquarks.
description: submitted to Phys. Rev. C
On the Origin of Isophotal Shapes in Elliptical Galaxies
Creators: name: Khochfar, Sadegh
name: Burkert, Andreas
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using semi-analytical models of galaxy formation, the origin of boxy and disky elliptical galaxies is investigated. We find that the simple scenario, motivated by N-body simulations, in which the isophotal shape is only dependent on the mass ratio of the last major merger, is not able to reproduce the observation that the fraction of boxy and disky ellipticals depends on galaxy luminosity. The observations can however be reproduce with the following reasonable assumptions: (i) equal-mass mergers lead to boxy ellipticals and unequal-mass mergers produce disky ellipticals (as motivated by N-body simulations) (ii) major mergers between bulge-dominated galaxies result always in boxy ellipticals, independent of the mass ratio, (iii) merger remnants that subsequently accrete gas leading to a secondary stellar disk with more than $20 %$ the total stellar fraction are always disky. Boxy and disky ellipticals can be divided into two subclasses, depending on their formation history. Boxy ellipticals either formed by equal mass mergers of disk galaxies or by major mergers of early-type galaxies. We find that disky ellipticals are indicators of unequal-mass mergers or late gas infall. Disky ellipticals with high luminosities preferentially are 1-component systems that result from unequal mass mergers whereas low-luminosity disky ellipticals are more likely to harbor secondary disk components. In addition, the fraction of disky ellipticals with secular disk components should increase in regions with higher galaxy densities. Taking into account the conversion of cuspy cores into flat low-density cores by black hole merging we find that disky ellipticals should contain central density cusps whereas boxy ellipticals should in general be characterized by flat cores.
description: 7 pages, 6 figures, revised version, accepted to MNRAS
The Stationary Wavelet Transform as an Efficient Reductor of Powerline Interference for Atrial Bipolar Electrograms in Cardiac Electrophysiology
Creators: name: Martinez-Iniesta, Miguel
name: Rodenas, Juan
name: Rieta, Jose J.
name: Alcaraz, Raul
Publisher: name: arXiv
Year: 2024
Subjects: subject: Medical Physics (physics.med-ph)
subject: Signal Processing (eess.SP)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Objective: The most relevant source of signal contamination in the cardiac electrophysiology (EP) laboratory is the ubiquitous powerline interference (PLI). To reduce this perturbation, algorithms including common fixed bandwidth and adaptive notch filters have been proposed. Although such methods have proven to add artificial fractionation to intra atrial electrograms (EGMs), they are still frequently used. However, such morphological alteration can conceal the accurate interpretation of EGMs, specially to evaluate the mechanisms supporting atrial fibrillation (AF), which is the most common cardiac arrhythmia. Given the clinical relevance of AF, a novel algorithm aimed at reducing PLI on highly contaminated bipolar EGMs and, simultaneously, preserving their morphology is proposed. Approach: The method is based on the wavelet shrinkage and has been validated through customized indices on a set of synthesized EGMs to accurately quantify the achieved level of PLI reduction and signal morphology alteration. Visual validation of the algorithms performance has also been included for some real EGM excerpts. Main results: The method has outperformed common filtering-based and wavelet based strategies in the analyzed scenario. Moreover, it possesses advantages such as insensitivity to amplitude and frequency variations in the PLI, and the capability of joint removal of several interferences. Significance: The use of this algorithm in routine cardiac EP studies may enable improved and truthful evaluation of AF mechanisms.
Markov processes on partitions
Creators: name: Borodin, Alexei
name: Olshanski, Grigori
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: Representation Theory (math.RT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We introduce and study a family of Markov processes on partitions. The processes preserve the so-called z-measures on partitions previously studied in connection with harmonic analysis on the infinite symmetric group. We show that the dynamical correlation functions of these processes have determinantal structure and we explicitly compute their correlation kernels. We also compute the scaling limits of the kernels in two different regimes. The limit kernels describe the asymptotic behavior of large rows and columns of the corresponding random Young diagrams, and the behavior of the Young diagrams near the diagonal. Our results show that recently discovered analogy between random partitions arising in representation theory and spectra of random matrices extends to the associated time-dependent models.
description: AMSTeX, 73 pages
Evaluation of risk management tools for stabilising farm income under CAP 2014-2020
Evaluación de herramientas de gestión del riego para la estabilización de la renta agraria en el marco de la PAC 2014-2020
Creators: name: Castañeda-Vera, Alba
name: Garrido, Alberto
name: Castañeda-Vera, Alba
name: Garrido, Alberto
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agribusiness
subject: Crop insurance
subject: direct payments
subject: diversification
subject: income stabilisation fund
subject: income volatility.

description: Guaranteeing farm income stability is an objective of the European Union’s and the Spanish agricultural policies. In this paper, CAP direct payments, diversification, crop insurance and an Income Stabilisation Tool (IST) were compared considering (i) their effect on farm income and income stability, (ii) the expected farmers’ willingness for adoption, and (iii) the efficiency of public expenditure invested in supporting them. Main conclusions point at direct payments and crop diversification as the most effective measures in decreasing income variability. Nevertheless, using crop insurance or an IST has potential for both improving farm resilience to income variability and limiting public expenditure
The developing recession in the United States
Creators: name: Godley, Wynne
Publisher: name: PSL Quarterly Review
Year: 2012
Subjects: subject: Expansion, Recession
subject: E32

description: This article points out that the expansion of aggregate demand in the US during the nineties was structured in a highly unusual way. There was a progressive tightening of the fiscal stance, so growth had to be powered by a uniquely rapid growth of private expenditure in excess of disposable income. This process was intrinsically unsustainable because it required very heavy borrowing, which caused a rise to record levels in debt/income ratios. If aggregate demand is to grow at an adequate rate in the medium term, there will have to be a large further fiscal relaxation. Yet fiscal policy alone cannot solve the problem because there has been a growing deficit in the balance of payments which will have to be corrected at some stage. The implications for the rest of the world of continued recession in the US could be very serious. JEL Codes: E32
description: PSL Quarterly Review, V. 54, N. 219 (2001)
Cost and benefits of the National River Linking Project: an analysis of peninsular links
Creators: name: Amarasinghe, Upali A.
name: Srinivasulu, R.
name: Amarasinghe, Upali A.
name: Srinivasulu, R.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: Demand and Price Analysis
subject: Financial Economics
subject: Production Economics
subject: Productivity Analysis
subject: Irrigation programs
subject: Water transfer
subject: River basins
subject: Cost benefit analysis
subject: India

description: Water, a critical component of food, livelihood and economic security, has always received a central place in India’s investment portfolios. The investment in water transfers of the National River Linking Project (NRLP) is one of the biggest proposed in recent times. When and if completed, the NRLP forms a gigantic water grid covering most of South Asia. It envisages transferring 174 billion cubic meters (Bm3) of water across 34 river links and will cost about US$120 billion (2000 prices). The proposed plan has aroused a large interest in recent public discourses. Hydrological feasibility, financial viability and social cost are the issues that dominate these public dalogues. This paper analyzes the cost and benefits of eight river links in the peninsular component, which include the main subcomponent of linking rivers of Mahanadi, Godavari, Pennar and Cauvery. Irrigation is the main beneficiary in this component and, en route, these links or canals account for 85% of the total water transfers to irrigation and domestic and industrial sectors in the command areas. However, our analyses show mixed results of financial viability of individual links. The main reason for this is low net value-added benefits from additional irrigation over and above the existing level of cropping and irrigation patterns. The proposed cropping patterns of these links generate much less net value-added benefits than the existing cropping and irrigation patterns. To make these links financially viable, they need to include high-value cropping patterns that, at least, generate as much benefit per unit area as fruits and vegetables. Although some individual links show less than desirable net benefits, taken together the Mahanadi-Godavari-Pennar-Cauvery subcomponent gives a higher internal rate of return of 14% compared to a discount rate of 12%, and a high benefit-cost ratio of 1.3. However, many unknown factors or unavailable information in this analysis can alter the estimates of financial benefits and costs.
description: In International Water Management Institute (IWMI). Strategic Analyses of the National River Linking Project (NRLP) of India Series 5. Proceedings of the Second National Workshop on Strategic Issues in Indian Irrigation, New Delhi, India, 8-9 April 2009. Colombo, Sri Lanka: International Water Management Institute (IWMI).
Performance Analysis and Optimisation of FFR-Aided OFDMA Networks using Channel-Aware Scheduling
Creators: name: Morales, Jan García
name: Femenias, Guillem
name: Palou, Felip Riera
Publisher: name: arXiv
Year: 2024
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Modern cellular standards typically incorporate interference coordination schemes allowing near universal frequency reuse while preserving reasonably high spectral efficiencies over the whole coverage area. In particular, fractional frequency reuse (FFR) and its variants are deemed to play a fundamental role in the next generation of cellular deployments (B4G/5G systems). This paper presents an analytical framework allowing the downlink performance evaluation of FFR-aided OFDMA networks when using channel-aware scheduling policies. Remarkably, the framework contemplates the use of different rate allocation strategies, thus allowing to assess the network behaviour under ideal (capacity-based) or realistic (throughput-based) conditions. Analytical performance results are used to optimise the FFR parameters as a function of, for instance, the resource block scheduling policy or the density of UEs per cell. Furthermore, different optimisation designs of the FFR component are proposed that allow a tradeoff between throughput performance and fairness by suitably dimensioning the FFR-defined cell-centre and cell-edge areas and the corresponding frequency allocation to each region. Numerical results serve to confirm the accuracy of the proposed analytical model while providing insight on how the different parameters and designs affect network performance.
title: Verus von Plotho. Ein Enkel entdeckt seine Großeltern – und Masuren
Creators: name: Lachauer, Ulla
name: Kern, Agata
Publisher: name: Herder-Institut
Year: 2022
Subjects: subject: 943 Geschichte Mitteleuropas; Deutschlands

description: „In meiner Familie gab es keine Erinnerungskultur“, sagt Verus von Plotho. Ein Weltbürger, 1969 in Sao Paulo, Brasilien, geboren, aufgewachsen in München. Seine Mutter ist Gabriele Freifrau von Plotho, die dritte Tochter von Heinrich und Gottliebe von Lehndorff. Über den Großvater und seinen Widerstand gegen Hitler wurde Zuhause kaum gesprochen, auch nicht über das frühere Leben auf Schloss Steinort. Enkel Verus wuchs – unbelastet – im Schatten der dramatischen Vergangenheit auf.
Valoración de la oferta de bienes públicos por parte de los sistemas agrarios: el caso del olivar de montaña en Andalucía
Valuation of the supply of public goods by agricultural systems: the case of Andalusian mountain olive groves
Creators: name: Villanueva, Anastasio J.
name: Gómez-Limón, José A.
name: Rodríguez-Entrena, Macario
name: Villanueva, Anastasio J.
name: Gómez-Limón, José A.
name: Rodríguez-Entrena, Macario
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agricultural Finance
subject: Bienes públicos
subject: experimentos de elección
subject: olivar de montaña
subject: pagos por resultados
subject: programas agroambientales
subject: Agri-environmental scheme
subject: choice experiments
subject: mountain olive groves
subject: public goods
subject: results-based payments

description: [ES]El presente trabajo realiza una valoración económica de la provisión de bienes públicos (BBPP) por parte del olivar de montaña en Andalucía empleando experimentos de elección. Los re-sultados reflejan un comportamiento diferencial del productor en función del grado de exigencia, con compensaciones modestas para escenarios de producción integrada (menor de 80 €/ha), y notables para los escenarios de producción ecológica reforzada y de vocación neta de provisión de BBPP (superiores a 300 €/ha). Se muestra asimismo la escasa relevancia que presenta la inclusión de una prima adicional por resultados. [EN]We carried out an economic valuation of public goods (PGs) provided by Andalusian mountainous olive groves using choice experiments. The results show varying farmers’ behaviour depending on the level of stringency of the requirements included in agri-environmental schemes, with willingness to accept (WTA) lower than € 80/ha for less stringent scenarios (such as those associated with integrate production) and WTA higher than € 300/ha for the most stringent scenario (designed to maximise the provision of environmental PGs). The study also indicates that the inclusion of a results-based bonus has a low relevance.
Accumulation of three-body resonances above two-body thresholds
Creators: name: Papp, Z.
name: Darai, J.
name: Mezei, J. Zs.
name: Hlousek, Z. T.
name: Hu, C-. Y.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We calculate resonances in three-body systems with attractive Coulomb potentials by solving the homogeneous Faddeev-Merkuriev integral equations for complex energies. The equations are solved by using the Coulomb-Sturmian separable expansion approach. This approach provides an exact treatment of the threshold behavior of the three-body Coulombic systems. We considered the negative positronium ion and, besides locating all the previously know $S$-wave resonances, we found a whole bunch of new resonances accumulated just slightly above the two-body thresholds. The way they accumulate indicates that probably there are infinitely many resonances just above the two-body thresholds, and this might be a general property of three-body systems with attractive Coulomb potentials.
description: 4 pages, 3 figures
Blue luminescence of Au nanoclusters embedded in silica matrix
Creators: name: Dhara, S.
name: Chandra, Sharat
name: Magudapathy, P.
name: Kalavathi, S.
name: Panigrahi, B. K.
name: Nair, K. G. M.
name: Sastry, V. S.
name: Hsu, C. W.
name: Wu, C. T.
name: Chen, K. H.
name: Chen, L. C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Photoluminescence study using the 325 nm He-Cd excitation is reported for the Au nanoclusters embedded in SiO2 matrix. Au clusters are grown by ion beam mixing with 100 KeV Ar+ irradiation on Au [40 nm]/SiO2 at various fluences and subsequent annealing at high temperature. The blue bands above ~3 eV match closely with reported values for colloidal Au nanoclusters and supported Au nanoislands. Radiative recombination of sp electrons above Fermi level to occupied d-band holes are assigned for observed luminescence peaks. Peaks at 3.1 eV and 3.4 eV are correlated to energy gaps at the X- and L-symmetry points, respectively, with possible involvement of relaxation mechanism. The blue shift of peak positions at 3.4 eV with decreasing cluster size is reported to be due to the compressive strain in small clusters. A first principle calculation based on density functional theory using the full potential linear augmented plane wave plus local orbitals (FP-LAPW+LO) formalism with generalized gradient approximation (GGA) for the exchange correlation energy is used to estimate the band gaps at the X- and L-symmetry points by calculating the band structures and joint density of states (JDOS) for different strain values in order to explain the blueshift of ~0.1 eV with decreasing cluster size around L-symmetry point.
description: 13 pages, 7 Figures Only in PDF format; To be published in J. of Chem. Phys. (Tentative issue of publication 8th December 2004)
Mission Design for the Laser Astrometric Test Of Relativity
Creators: name: Turyshev, Slava G.
name: Shao, Michael
name: Nordtvedt, Kenneth L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: This paper focuses on the mission design for the Laser Astrometric Test Of Relativity (LATOR). This mission uses laser interferometry between two micro-spacecraft whose lines of sight pass close by the Sun to accurately measure deflection of light in the solar gravity. The key element of the experimental design is a redundant geometry optical truss provided by a long-baseline (100 m) multi-channel stellar optical interferometer placed on the International Space Station (ISS). The spatial interferometer is used for measuring the angles between the two spacecraft and for orbit determination purposes. The geometric redundancy enables LATOR to measure the departure from Euclidean geometry caused by the solar gravity field to a very high accuracy. Such a design enables LATOR to improve the value of the parameterized post-Newtonian (PPN) parameter $γ$ to unprecedented levels of accuracy of 1 part in 10$^{8}$; the misison will also measure effects of the next post-Newtonian order ($\propto G^2$) of light deflection resulting from gravity's intrinsic non-linearity. The solar quadrupole moment parameter, $J_2$, will be measured with high precision, as well as a variety of other relativistic effects including Lense-Thirring precession. LATOR will lead to very robust advances in the tests of Fundamental physics: this mission could discover a violation or extension of general relativity, or reveal the presence of an additional long range interaction in the physical law.
description: 14 pages, 2 figures, invited talk given at ``35th COSPAR Scientific Assebly,'' July 18-24, 2004, Paris, France
GNN-LoFI: a Novel Graph Neural Network through Localized Feature-based Histogram Intersection
Creators: name: Bicciato, Alessandro
name: Cosmo, Luca
name: Minello, Giorgia
name: Rossi, Luca
name: Torsello, Andrea
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Graph neural networks are increasingly becoming the framework of choice for graph-based machine learning. In this paper, we propose a new graph neural network architecture that substitutes classical message passing with an analysis of the local distribution of node features. To this end, we extract the distribution of features in the egonet for each local neighbourhood and compare them against a set of learned label distributions by taking the histogram intersection kernel. The similarity information is then propagated to other nodes in the network, effectively creating a message passing-like mechanism where the message is determined by the ensemble of the features. We perform an ablation study to evaluate the network's performance under different choices of its hyper-parameters. Finally, we test our model on standard graph classification and regression benchmarks, and we find that it outperforms widely used alternative approaches, including both graph kernels and graph neural networks.
On the Mixed Sensitivity Minimization for Systems with Infinitely Many Unstable Modes
Creators: name: Gumussoy, Suat
name: Ozbay, Hitay
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this note we consider a class of linear time invariant systems with infinitely many unstable modes. By using the parameterization of all stabilizing controllers and a data transformation, we show that H-infinity controllers for such systems can be computed using the techniques developed earlier for infinite dimensional plants with finitely many unstable modes.
description: arXiv admin note: text overlap with arXiv:2003.01003
Chemical Abundances for Seven Giant Stars in M68 (NGC 4590) : A Globular Cluster with Abnormal Silicon and Titanium Abundances
Creators: name: Lee, Jae-Woo
name: Carney, Bruce W.
name: Habgood, Michael J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a detailed chemical abundance study of seven giant stars in M68 including six red giants and one post-AGB star. We find significant differences in the gravities determined using photometry and those obtained from ionization balance, which suggests that non-LTE effects are important for these low-gravity, metal-poor stars. We adopt an iron abundance using photometric gravities and Fe II lines to minimize those effects, finding [Fe/H] = -2.16 +/- 0.02. For element-to-iron ratios,we rely on neutral lines vs. Fe I and ionized lines vs. FeII (except for [O/Fe]) to also minimize non-LTE effects. We find variations in the abundances of sodium among the program stars. However, there is no correlation (or anti-correlation) with the oxygen abundances. Further, the post-AGB star has a normal (low) abundance of sodium. Both of these facts add further support to the idea that the variations seen among some light elements within individual globular clusters arises from primordial variations, and not from deep mixing. M68, like M15, shows elevated abundances of silicon compared to other globular clusters and comparable metallicity field stars. But M68 deviates even more in showing a relative underabundance of titanium. We speculate that in M68, titanium is behaving like an iron-peak element rather than its more commonly observed adherence to enhancements seen in the "alpha" elements such as magnesium, silicon, and calcium. We interpret this result as implying that the chemical enrichment seen in M68 may have arisen from contributions from supernovae with somewhat more massive progenitors than contribute normally to abundances seen in other globular clusters.
description: Accepted for publication in AJ (Jan. 2005)
Inflation model building in moduli space
Creators: name: Kadota, Kenji
name: Stewart, Ewan D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A self-consistent modular cosmology scenario and its testability in view of future CMB experiments are discussed. Particular attention is drawn to the enhanced symmetric points in moduli space which play crucial roles in our scenario. The running and moreover the running of running for the cosmic perturbation spectrum are also analyzed.
description: 5 pages, to appear in PASCOS04 proceedings
Capital mobility. An overview
Creators: name: Arndt, H. W.
Publisher: name: PSL Quarterly Review
Year: 2012
Subjects: subject: Capital Controls, Globalization, History
subject: F32, G15, N70

description: The article analyses the problem of international capital mobility which the Asian crisis has highlighted. It points out that the problem of capital mobility ("hot money" panics) has a long history, but globalization, the opening up of national economies and technological advance have increased the risks. The article discusses four policy debated which are being pursued in the large Asian crisis literature: (i) the pros and cons of capital controls; (ii) the choice of exchange rate regime; (iii) financial factor reform; and (iv) the rule of law. JEL Codes: F32, G15, N70
description: PSL Quarterly Review, V. 53, N. 214 (2000)
title: Verus von Plotho. A grandson discovers his grandparents – and Masuria
Creators: name: Lachauer, Ulla
name: Kern, Agata
Publisher: name: Herder-Institut
Year: 2022
Subjects: subject: 943 Geschichte Mitteleuropas; Deutschlands

description: "There was no culture of remembrance in my family," says Verus von Plotho. He grew up in a cosmopolitan world. He was born in Sao Paulo, Brazil, in 1969 and grew up in Munich. His mother is Gabriele Freifrau von Plotho, the third daughter of Heinrich and Gottliebe von Lehndorff. There was hardly any talk at home about his grandfather and his resistance to Hitler, nor about his earlier life at Steinort Castle. Grandson Verus grew up – unencumbered – in the shadow of a dramatic past.