cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Is Cosmic Parity Violation Responsible for the Anomalies in the WMAP Data?
Creators: name: Alexander, Stephon H. S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This research demonstrates that parity violation in general relativity can simultaneously explain the observed loss in power and alignment at a preferred axis ('Axis of Evil')in the low multipole moments of the WMAP data. This observational possibility also provides an experimental window for an inflationary leptogenesis mechanism arising from large-scale parity violation. A velocity dependent potential is induced from gravitational backreaction, which modifies the primordial scalar angular power spectrum of density perturbations in the CMB. This modification suppresses power of odd parity multipoles on large scales which can be associated with the scale of a massive right-handed neutrino.
description: 5 pages, included new references, expanded on some calculations
MICRO-LEVEL SMALL RUMINANT TRANSACTION ANALYSIS AND LIVESTOCK POLICY IN SENEGAL
Creators: name: Ndiaye, Ousmane
name: Ndiaye, Ousmane
Publisher: name: Unknown
Year: 1993
Subjects: Agricultural and Food Policy
Livestock Production/Industries

description: This study uses one year (1989-90) of households survey data covering all livestock transactions and input expenditures to examine the equity impacts of the Senegalese livestock policy and the factors affecting purchases and sales of small ruminants in three study zones of the Senegalese Peanut Basin. It also explores the potential for market development through more production and sales of small ruminants. The study found that a price depressing policy on small ruminants hurts richer households more than poorer households and that the two income groups of households have the same strategy of purchase and sale of small ruminants. The major cause of small ruminant income disparities are the relatively low productivity of the poorer households. The study also found that ethnic group is an important variable to consider when analyzing factors affecting small ruminants production and marketing. Overgrazing limits any production technique based on increasing livestock numbers when feeding is mainly based on the natural grazing lands. Intensification/semi intensification of livestock and improvement of credit programs and small ruminant health have been recommended.
Secure safehaven for the ASPREE clinical trial - The need
Creators: name: Jerico Revote
name: Aung, Swe Win
name: Quenette, Steve
name: Komathy Padmanabhan
Publisher: name: Monash University
Year: 2021
Subjects: subject: 110399 Clinical Sciences not elsewhere classified
subject: FOS: Clinical medicine
subject: 111706 Epidemiology
subject: FOS: Health sciences

description: Research story artefact of the "Secure safehaven for the ASPREE clinical trial - The need" user story.
Predictions for production of $\rm{^3_ΛH}$ and $\rm{{^3_{\overline Λ}\overline H}}$ in isobaric $^{96}_{44}$Ru+$^{96}_{44}$Ru and $^{96}_{40}$Zr+$^{96}_{40}$Zr collisions at $\sqrt{s_{\rm{NN}}}$ = 200 GeV
Creators: name: She, Zhi-Lei
name: Chen, Gang
name: Zhou, Dai-Mei
name: Zheng, Liang
name: Xie, Yi-Long
name: Xu, Hong-Ge
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The production of $\rm{^3_ΛH}$ and $\rm{{^3_{\overline Λ}\overline H}}$, as well as $\rm{^3H}$, $\rm{^3\overline H}$, $\rm{^3He}$, and $\rm{^3\overline {He}}$ are studied in central collisions of isobars $^{96}_{44}$Ru+$^{96}_{44}$Ru and $^{96}_{40}$Zr+$^{96}_{40}$Zr at $\sqrt{s_{\rm{NN}}}=200$ GeV, using the dynamically constrained phase-space coalescence model and the {\footnotesize PACIAE} model with chiral magnetic effect. The yield, yield ratio, coalescence parameters, and strangeness population factor of (anti-)hypertriton and (anti-)nuclei produced in isobaric $^{96}_{44}$Ru+$^{96}_{44}$Ru and $^{96}_{40}$Zr+$^{96}_{40}$Zr collisions are predicted. The (anti-)hypertriton and (anti-)nuclei production is found to be insensitive to the chiral magnetic effects. Experimental data of Cu+Cu, Au+Au and Pb+Pb collisions from RHIC, LHC, and the results of {\footnotesize PACIAE+DCPC} model are presented in the results for comparison.
description: 7 pages, 4 figures
Quantum tomography with wavelet transform in Banach space on Homogeneous space
Creators: name: Jafarizadeh, M. A.
name: Mirzaee, M.
name: Rezaee, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The intimate connection between the Banach space wavelet reconstruction method on homogeneous spaces with both singular and nonsingular vacuum vectors, and some of well known quantum tomographies, such as: Moyal-representation for a spin, discrete phase space tomography, tomography of a free particle, Homodyne tomography, phase space tomography and SU(1,1) tomography is explained. Also both the atomic decomposition and banach frame nature of these quantum tomographic examples is explained in details. Finally the connection between the wavelet formalism on Banach space and Q-function is discussed.
description: 25 pages
EQUITY SCHEMES IN SOUTH AFRICA: BENEFITS DELIVERED TO FARM WORKERS AS FUNCTION OF COMMERCIAL FARMERS' STRATEGY
Creators: name: Arellano-Vaca, Juan Francisco
name: Arellano-Vaca, Juan Francisco
Publisher: name: Unknown
Year: 2003
Subjects: Farm Management
Labor and Human Capital

description: With the end of Apartheid, the South African Government created and corrected agricultural factor and product market failures in its attempt to improve the distribution of wealth and incorporate previously disadvantaged farmers into the mainstream of agricultural activities. Some commercial farmers responded strategically to the new equity-based policies on factor and product markets by initiating equity-schemes with farm workers in order to maintain/increase their profits given the new local economic and political environment and global competition. Hence, most equity-schemes are organized according to the commercial farmers' capacities. The purpose of this paper is to analyze the organizational structure of the equity-schemes as a function of the commercial farmers strategy (production vs. marketing). This study is based on interviews of emerging farmers, former and present farm workers, commercial farmers, non-Governmental Organizations and Governmental agencies. The results show that equity-schemes tend to benefit commercial farmers but the degree to which farm workers' gain access to factor and product markets depends on commercial farmers' strategy. Then, the paper assesses alternative organizational structures of equity-schemes to maximize the benefits delivered to farm workers. Finally, utilizing the Peterson-Wysocki-Harsh Model, the issues of why the Government policies have not accomplished its objectives are discussed and recommendations to broaden the implementation of equity-schemes are suggested.
A PROPOSAL FOR TEACHING FARM MANAGEMENT AT THE INSTITUTE OF AGRICULTURE AND ANIMAL SCIENCE TRIBHUVAN UNIVERSITY, RAMPUR NEPAL
Creators: name: Bajracharya, Sribindu R.
name: Bajracharya, Sribindu R.
Publisher: name: Unknown
Year: 1978
Subjects: Farm Management
Teaching/Communication/Extension/Profession

description: This paper is concerned with farm management teaching needs in Nepal. It is intended to assist the author in the preparation of appropriate teaching materials as he assumes teaching and research responsibilities in the area of farm management when he returns to Tribhuvan University, Institute of Agriculture and Animal Science. It was selected as a research topic because of the need to think through the development needs of Nepal and to evaluate those aspects of farm management education traditionally taught for their contribution to agricultural development in Nepal.
Eddington-limited X-ray Bursts as Distance Indicators. II. Possible Compositional Effects in Bursts from 4U 1636-536
Creators: name: Galloway, Duncan
name: Psaltis, Dimitrios
name: Muno, Michael P.
name: Chakrabarty, Deepto
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyzed 123 thermonuclear (type-I) X-ray bursts observed by the Rossi X-ray Timing Explorer from the low-mass X-ray binary 4U 1636-536. All but two of the 40 radius-exansion bursts in this sample reached peak fluxes which were normally distributed about a mean of 6.4e-8 ergs/cm^2/s, with a standard deviation of 7.6%. The remaining two radius-expansion bursts reached peak fluxes a factor of 1.69+/-0.13 lower than this mean value; as a consequence, the overall variation in the peak flux of the radius-expansion bursts was a factor of ~2. This variation is comparable to the range of the Eddington limit between material with solar H-fraction (X=0.7) and pure He. Such a variation may arise if, for the bright radius-expansion bursts, most of the accreted H is eliminated either by steady hot CNO burning or expelled in a radiatively-driven wind. However, steady burning cannot exhaust the accreted H for solar composition material within the typical ~2 hr burst recurrence time, nor can it result in sufficient elemental stratification to allow selective ejection of the H only. An additional stratification mechanism appears to be required to separate the accreted elements and thus allow preferential ejection of the hydrogen. We found no evidence for a gap in the peak flux distribution between the radius-expansion and non-radius expansion bursts, previously observed in smaller samples. Assuming that the faint radius-expansion bursts reached the Eddington limit for H-rich material (X~0.7), and the brighter bursts the limit for pure He (X=0), we estimate the distance to 4U 1636-536 (for a canonical neutron star with M_NS=1.4M_sun, R_NS=10 km) to be 6.0+/-0.5 kpc, or for M_NS=2M_sun at most 7.1 kpc. (Abstract abridged)
description: 6 pages, 2 figures, accepted by ApJ
INTEGRATED RURAL DEVELOPMENT IN AFRICA: PLANNING AND EVALUATION
Creators: name: Dejene, Tekola
name: Dejene, Tekola
Publisher: name: Unknown
Year: 1973
Subjects: Community/Rural/Urban Development

description: In most LDC's, as high as 85 percent of the population is engaged in subsistence agriculture and as high as 90 percent of the population live in the rural sector which comprises the population engaged both in farm and nonfarm activities. The level of income of the rural population is very low compared to the small urban sector of these countries and the income per capita growth rate is excruciatingly slow. At the same time this sector contributes 50-60 percent of the GDP in most countries with an average growth rate of 2.5 to 3 percent. Economists estimate that with population growing at 2 to 3 percent per annum and per capita income consumption rising at 1 percent, there will be an annual increase of 4 percent in demand for food. This growth in food production is not within the reach of most developing countries and as a result, malnutrition and food shortages will likely plague many countries. Moreover, people in this sector suffer from extreme poverty, disease, illiteracy, low levels of productive employment, etc. In this paper an integrated approach to improving the welfare of the rural people will be examined. This is a method of introducing different economic and social activities that have a converging effect of raising the level of living and bringing about a favorable change in the way of life of the rural population in a concerted and coordinated manner. The discussion will concentrate on African countries with mixed economies.
Interpolatory-based data-driven pulsed fluidic actuator control design and experimental validation
Creators: name: Poussot-Vassal, Charles
name: Kergus, Pauline
name: Kerhervé, Franck
name: Sipp, Denis
name: Cordier, Laurent
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: Pulsed fluidic actuators play a central role in the fluid flow experimental control strategy to achieve better performances of aeronautic devices. In this paper, we demonstrate, through an experimental test bench, how the interpolatory-based Loewner Data-Driven Control (L-DDC) framework is an appropriate tool for accurately controlling the outflow velocity of this family of actuators. L-DDC combines the concept of ideal controller with the Loewner framework in a single data-driven rationale, appropriate to experimental users. The contributions of the paper are, first, to emphasise the simplicity and versatility of such a data-driven rationale in a constrained experimental setup, and second, to solve some practical fluid engineers concerns by detailing the complete workflow and key ingredients for successfully implementing a pulsed fluidic actuator controller from the data acquisition to the control implementation and validation stages.
description: 20 pages, 7 figures
TECHNICAL ANALYSIS OF THE FUTURES MARKET AND ITS RELATION TO HEDGING
Creators: name: Ennen, David L.
name: Ennen, David L.
Publisher: name: Unknown
Year: 1979
Subjects: subject: Marketing
subject: FOS: Economics and business

description: The cattle market is known for its extreme price fluctuations that can make a pauper out of a prince. The boom or bust nature of the industry is nothing new, as the change in prices can be fairly dramatic. Since the price that a cattle feeder receives for his cattle has a large impact on his profits, the severe price changes have had a major impact on the variation in net profits for cattle feeders. If a cattle feeder is going to reduce his price risk by using selective hedging, he has to either (a) be a good price forecaster or (b) have some strategy that is less subjective than price forecasting. If his judgement is incorrect, he could be hedged when the price is increasing and unhedged when the price is decreasing, increasing the volatility of his income and decreasing the average income. Therefore, if the entrepreneur is going to be able to use the futures market to protect himself from price declines, he will need to be able to determine when the futures price is going to fall.
Indicators of Migrants' Socio-Professional Integration
Creators: name: Gregori, Emilio
name: Gregori, Emilio
Publisher: name: Unknown
Year: 2006
Subjects: Labor and Human Capital

description: Understanding and monitoring the diversity which lies under migrants' socio-professional integration trends is a challenge that both Governments and local administrations must be able to face. This paper is about a research project, developed under the EU initiative Equal, consisting in the establishment of a set of indicators of professional and social integration of migrant people in Italy, based on data collected from administrative and official sources. This work was carried out starting from a literature analysis of both theoretical and empirical experiences in the Italian context. The problem of the theoretical concept of migrants, foreigners and integration was discussed, as well as the matters concerning the dimensions of professional integration, the reliability of sources, the methodology, the operating definition of indicators and above all the correct interpretation of quantitative results, from the point of view of the level of integration. The set of indicators was empirically implemented for a first validation at a national, regional and local level, building annual time series from 1996 to 2001. Studying socio-economic migrants integration is a key challenge in order to offer tools for the implementation of policies able to promote equal opportunities of access and mobility in the labour market. Active policy promotion, i.e. the support of foreign people in the acquisition of the basic linguistic skills and in lifelong-learning, is a useful way not only to promote occupation but also to prevent discrimination problems in the workplace: the correct implementation of these policies is possible only if based on multidimensional analysis of migrants placement in the labour market.
Bott-Thom isomorphism, Hopf bundles and Morse theory
Creators: name: Eschenburg, Jost-Hinrich
name: Hanke, Bernhard
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Topology (math.AT)
subject: Differential Geometry (math.DG)
subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: Primary: 53C35, 15A66, 55R10, Secondary: 55R50, 58E10, 58D15

description: Based on Morse theory for the energy functional on path spaces we develop a deformation theory for mapping spaces of spheres into orthogonal groups. This is used to show that these mapping spaces are weakly homotopy equivalent, in a stable range, to mapping spaces associated to orthogonal Clifford representations. Given an oriented Euclidean bundle $V \to X$ of rank divisible by four over a finite complex $X$ we derive a stable decomposition result for vector bundles over the sphere bundle $\mathord{\mathbb S}( \mathbb{R} \oplus V)$ in terms of vector bundles and Clifford module bundles over $X$. After passing to topological K-theory these results imply classical Bott-Thom isomorphism theorems.
description: 37 pages, 13 figures; minor edits; published version
TRAPUM pulsar and transient search in the Sextans A and B galaxies and discovery of background FRB 20210924D
Creators: name: Carli, E.
name: Levin, L.
name: Stappers, B. W.
name: Barr, E. D.
name: Breton, R. P.
name: Buchner, S.
name: Burgay, M.
name: Kramer, M.
name: Padmanabh, P. V.
name: Possenti, A.
name: Krishnan, V. Venkatraman
name: Sridhar, S. S.
name: Turner, J. D.
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The Small and Large Magellanic Clouds are the only galaxies outside our own in which radio pulsars have been discovered to date. The sensitivity of the MeerKAT radio interferometer offers an opportunity to search for a population of more distant extragalactic pulsars. The TRAPUM (TRansients And PUlsars with MeerKAT) collaboration has performed a radio-domain search for pulsars and transients in the dwarf star-forming galaxies Sextans A and B, situated at the edge of the local group 1.4 Mpc away. We conducted three 2-hour multi-beam observations at L-band (856-1712 MHz) with the full array of MeerKAT. No pulsars were found down to a radio pseudo-luminosity upper limit of 7.9$\pm$0.4 Jy kpc$^{2}$ at 1400 MHz, which is 28 times more sensitive than the previous limit from the Murriyang telescope. This luminosity is 30 per cent greater than that of the brightest known radio pulsar and sets a cut-off on the luminosity distributions of the entire Sextans A and B galaxies for unobscured radio pulsars beamed in our direction. A Fast Radio Burst was detected in one of the Sextans A observations at a Dispersion Measure (DM) of 737 pc cm$^{-3}$. We believe this is a background event not associated with the dwarf galaxy due to its large DM and its S/N being strongest in the wide-field incoherent beam of MeerKAT.
description: 11 pages, 9 figures, 5 tables. Accepted for publication in Monthly Notices of the Royal Astronomical Society
"God's little acre" and "Belfast Chinatown" : Diversity and Ethnic Place Identity in Belfast
Creators: name: Chan, Suzanna
name: Chan, Suzanna
Publisher: name: Unknown
Year: 2006
Subjects: Labor and Human Capital

description: For members of ethnic minorities in Northern Ireland, place making can mean negotiating challenges posed by tensions between the two majority communities of Catholic, nationalist, republican and Protestant, unionist, loyalist; tensions which are reflected in contests over place identity. In Belfast, the Chinese Welfare Association (CWA) has undertaken two building projects to service the needs of the Chinese community and to promote diversity, engaging in close consultation with local communities. Hong Ling Gardens Chinese Sheltered Housing Scheme provides culturally sensitive sheltered accommodation for Chinese elders. The second building will provide a Chinese Community and Resource Centre, and construction is planned to commence in December 2006. This paper highlights how the CWA has met challenges posed by territoriality, and anxieties in relation to perceived changes in politico-cultural place identities, within the complexities of Northern Ireland. It uses semi-structured interviews, cultural and social theory, consultation of meeting reports, and empirical observation.
Estimating Feedback Effect in Technical Change: A Frontier Approach
Creators: name: Otto, Vincent M.
name: Kuosmanen, Timo
name: Van Ierland, Ekko C.
name: Otto, Vincent M.
name: Kuosmanen, Timo
name: Van Ierland, Ekko C.
Publisher: name: Unknown
Year: 2006
Subjects: Research and Development/Tech Change/Emerging Technologies

description: This study examines whether today's technical change depends on yesterday's technical change. We propose to investigate this feedback effect by using the technical-change component of the Malmquist productivity index. This approach can overcome some problems in alternative patent-citation approaches. We apply the approach by estimating the feedback effect from production data of 25 OECD countries for 1980 through 1997. Our model yields evidence on a positive feedback effect with delays up till eight years. These findings are in line with patent-citation studies and bring us closer to a measure of the social returns to R&D.
Experimental study of magneto-superconductor RuSr2Eu1.5Ce0.5Cu2O10: Effect of Mo doping on magnetic behavior and Tc variation
Creators: name: Awana, V. P. S.
name: Lal, R.
name: Kishan, H.
name: Narlikar, A. V.
name: Peurla, M.
name: Laiho, R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Mo doped ruthenocuprates Ru1-xMoxSr2Eu1.5Ce0.5Cu2O10 are synthesized for x = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0, and their magnetic and superconducting properties are studied. It has been found that the magnetic transition temperature TZFCpeak, which corresponds to the appearance of weak ferromagnetic effect, decreases from its value of 75 K for x = 0.0 to 22 K, 25 K and 18 K, respectively for the x = 0.2, 0.4 and 0.6 samples. Another finding is that the magnetic susceptibility reduces at TZFCpeak by a factor of about 6, 85 and 413 for x = 0.2, 0.4, and 0.6 respectively. The samples of x = 0.8 and 1.0 are found to have no magnetic or superconducting effects. The values of the superconducting transition temperature are obtained from the resistivity versus temperature data. An important result is that Tc increases by 4.5 K and 7.0 K for x = 0.2 and 0.4 respectively, and then decreases by 17 K for x = 0.6. The observed variation of Tc with x has been explained in terms of a theory which combines the effects of weakening magnetic behavior and reducing carrier concentration in a phenomenological manner. The resulting theory is found to provide a good agreement with the observed value of Tc.
description: 14 pages with Text + Figs. To Appear in PHYS. REV. B, Ist Jan. 2006 issue
Universal collective modes from strong electronic correlations: Modified $1/\mathcal{N}_f$ theory with application to high-$T_c$ cuprates
Creators: name: Fidrysiak, Maciej
name: Spałek, Józef
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A nonzero-temperature technique for strongly correlated electron lattice systems, combining elements of both variational wave function (VWF) approach and expansion in the inverse number of fermionic flavors ($1/\mathcal{N}_f$), is developed. The departure point, VWF method, goes beyond the renormalized mean-field theory and provides semi-quantitative description of principal equilibrium properties of high-$T_c$ superconducting cuprates. The developed here scheme of VWF+$1/\mathcal{N}_f$, in the leading order provides dynamical spin and charge responses around the VWF solution, generalizing the weak-coupling spin-fluctuation theory to the regime of strong correlations. Thermodynamic corrections to the correlated saddle-point state arise systematically at consecutive orders. Explicitly, VWF+$1/\mathcal{N}_f$ is applied to evaluate dynamical response functions for the hole-doped Hubbard model and compared with available determinant quantum-Monte-Carlo data, yielding a good overall agreement in the regime of coherent collective-mode dynamics. The emergence of well-defined spin and charge excitations from the incoherent continua is explicitly demonstrated and a non-monotonic dependence of the charge-excitation energy on the interaction magnitude is found. The charge-mode energy saturates slowly when approaching the strong-coupling limit, which calls for a reevaluation of the $t$-$J$-model approach to the charge dynamics in favor of more general $t$-$J$-$U$ and $t$-$J$-$U$-$V$ models. The results are also related to recent inelastic resonant $X$-ray and neutron scattering experiments for the high-$T_c$ cuprates.
Understanding "Diversity in Organizations" Paradigmatically and Methodologically
Creators: name: Omanoviae, Vedran
name: Omanoviae, Vedran
Publisher: name: Unknown
Year: 2006
Subjects: Industrial Organization
Labor and Human Capital

description: This paper is part of a larger dissertation project named: A Production of Diversity: Appearances, Ideas, Interests, Actions, Contradictions and Praxis. In this dissertation project, which is planned to be completed by the first half of 2006, I have attempted to describe, understand and analyse a process of diversity production at a large manufacturing company, which is located in Sweden and owned by a large American company (for the reason of confidentiality the name of the studied company, which is a large, technical-oriented company, has been changed and some of the information is modified, while another cannot be offered because it would expose the company. The studied manufacturing company will from now be called Diversico). My ambition with this paper is to call attention to different paradigmatical and methodological ways of understanding and studying "diversity in organizations". A starting-point for my discussion here is an assumption that researchers, by exploring different social phenomena (including "diversity in organizations"), bring their different sets of assumptions to what the studied phenomenon is (or could be) but also at the same time make assumptions on what organizations are (or could be). In other words, researchers, by studying "diversity in organizations" (as well as other social phenomena) construct ideas of diversity by positioning this phenomenon differently, asking different questions or designing research projects differently. In that sense I try to actively engage in both showing some benefits and limits in the present literature and searching for new theoretical and methodological possibilities. In that sense, I give some empirical illustrations inspired by one of these other possibilities. More concretely, I show how my study fulfils images of diversity as actively produced and positioned significant issues, and as domination of particular sectional interests. Furthermore I give illustrations of universalization and naturalization of some aspects of diversity, as identified in the studied process of diversity production at the manufacturing company.
Multivariate and Multicriteria Evaluation of Labour Market Situation
Creators: name: Sedenkova, Monika
name: Horak, Jiri
name: Sedenkova, Monika
name: Horak, Jiri
Publisher: name: Unknown
Year: 2006
Subjects: Labor and Human Capital

description: Nowadays the analysts of labour markets have a lot of different data and indicators that can be used for the evaluation of the labour market and monitor its development. But such a great number of monitoring determinants can create problems both with the evaluation and with the description of the situation of the labour market. Thus it is necessary to select a limited number of important indicators. A tool that can help with the selection of these indicators is a method of multidimensional statistics - multivariate analysis. In some cases it is necessary to use only one complex indicator that can evaluate the labour market from a lot of aspects. For a solution we can use multicriteria evaluation. These methods are described in this paper. We recommend a procedure for the in-depth study of the labour market situation.
Enhanced dispersion interaction in confined geometry
Creators: name: Marcovitch, Michal
name: Diamant, Haim
Publisher: name: arXiv
Year: 2005
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The dispersion interaction between two point-like particles confined in a dielectric slab between two plates of another dielectric medium is studied within a continuum (Lifshitz) theory. The retarded (Casimir-Polder) interaction at large inter-particle distances is found to be strongly enhanced as the mismatch between the dielectric permittivities of the two media is increased. The large-distance interaction is multiplied due to confinement by a factor of $(33γ^{5/2}+13γ^{-3/2})/46$ at zero temperature, and by $(5γ^2+γ^{-2})/6$ at finite temperature, $γ=\ein(0)/\eout(0)$ being the ratio between the static dielectric permittivities of the inner and outer media. This confinement-induced amplification of the dispersion interaction can reach several orders of magnitude.
description: 4 pages
Intellectual Property Rights and Entry into a Foreign Market: FDI vs. Joint Ventures
Creators: name: Leahy, Dermot
name: Naghavi, Alireza
name: Leahy, Dermot
name: Naghavi, Alireza
Publisher: name: Unknown
Year: 2006
Subjects: International Relations/Trade
Research and Development/Tech Change/Emerging Technologies

description: We study the effect of the intellectual property rights (IPR) regime of a host country (South) on a multinational's decision between serving a market via greenfield foreign direct investment to avoid the exposure of its technology or entering a joint venture (JV) with a local firm, which allows R&D spillovers under imperfect IPRs. JV is the equilibrium market structure when R&D intensity is moderate and IPRs strong. The South can gain from increased IPR protection by encouraging a JV, whereas policies to limit foreign ownership in a JV gain importance in technology intensive industries as complementary policies to strong IPRs.
Social Capital and Labour Productivity in Italy
Creators: name: Sabatini, Fabio
name: Sabatini, Fabio
Publisher: name: Unknown
Year: 2006
Subjects: Labor and Human Capital

description: This paper carries out an empirical assessment of the relationship between social capital and labour productivity in small and medium enterprises in Italy. By means of structural equations models, the analysis investigates the effect of different aspects of the multifaceted concept of social capital. The bonding social capital of strong family ties and the bridging social capital shaped by informal ties connecting friends and acquaintances are proved to exert a negative effect on labour productivity, the economic performance, and human development. On the contrary, the linking social capital of voluntary organizations positively influences such outcomes.
Full field algebras
Creators: name: Huang, Yi-Zhi
name: Kong, Liang
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Algebra (math.QA)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 17B69; 81T40

description: We solve the problem of constructing a genus-zero full conformal field theory (a conformal field theory on genus-zero Riemann surfaces containing both chiral and antichiral parts) from representations of a simple vertex operator algebra satisfying certain natural finiteness and reductive conditions. We introduce a notion of full field algebra which is essentially an algebraic formulation of the notion of genus-zero full conformal field theory. For two vertex operator algebras, their tensor product is naturally a full field algebra and we introduce a notion of full field algebra over such a tensor product. We study the structure of full field algebras over such a tensor product using modules and intertwining operators for the two vertex operator algebras. For a simple vertex operator algebra V satisfying certain natural finiteness and reductive conditions needed for the Verlinde conjecture to hold, we construct a bilinear form on the space of intertwining operators for V and prove the nondegeneracy and other basic properties of this form. The proof of the nondegenracy of the bilinear form depends not only on the theory of intertwining operator algebras but also on the modular invariance for intertwining operator algebras through the use of the results obtained in the proof of the Verlinde conjecture by the first author. Using this nondegenerate bilinear form, we construct a full field algebra over the tensor product of two copies of V and an invariant bilinear form on this algebra.
description: 66 pages. One reference is added, a minor mistake on the invariance under \sigma_{23} of the bilinear form on the space of intertwining operators is corrected and some misprints are fixed
Schmidt, Klaus / Szobries, Heinz: Ökumene - Gemeinden arbeiten zusammen
Creators: name: Basdekis, Athanasios
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 30 Nr. 1 (1981): Ökumenische Rundschau, Band 30, Heft 1
Macroscopic description for a quantum plasma micro-instability: the quantum Weibel solution
Creators: name: Haas, Fernando
name: Lazar, Marian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The Weibel instability in the quantum plasma case is treated by means of a fluid-like (moments) approach. Quantum modifications to the macroscopic equations are then identified as effects of first or second kind. Quantum effects of the first kind correspond to a dispersive term, similar to the Bohm potential in the quantum hydrodynamic equations for plasmas. Effects of the second kind are due to the Fermi statistics of the charge carriers and can become the dominant influence for strong degeneracy. The macroscopic dispersion relations are of higher order than those for the classical Weibel instability. This corresponds to the presence of a cutoff wave-number even for the strong temperature anisotropy case.
Detecting soccer balls with reduced neural networks: a comparison of multiple architectures under constrained hardware scenarios
Creators: name: Meneghetti, Douglas De Rizzo
name: Homem, Thiago Pedro Donadon
name: de Oliveira, Jonas Henrique Renolfi
name: da Silva, Isaac Jesus
name: Perico, Danilo Hernani
name: Bianchi, Reinaldo Augusto da Costa
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Object detection techniques that achieve state-of-the-art detection accuracy employ convolutional neural networks, implemented to have optimal performance in graphics processing units. Some hardware systems, such as mobile robots, operate under constrained hardware situations, but still benefit from object detection capabilities. Multiple network models have been proposed, achieving comparable accuracy with reduced architectures and leaner operations. Motivated by the need to create an object detection system for a soccer team of mobile robots, this work provides a comparative study of recent proposals of neural networks targeted towards constrained hardware environments, in the specific task of soccer ball detection. We train multiple open implementations of MobileNetV2 and MobileNetV3 models with different underlying architectures, as well as YOLOv3, TinyYOLOv3, YOLOv4 and TinyYOLOv4 in an annotated image data set captured using a mobile robot. We then report their mean average precision on a test data set and their inference times in videos of different resolutions, under constrained and unconstrained hardware configurations. Results show that MobileNetV3 models have a good trade-off between mAP and inference time in constrained scenarios only, while MobileNetV2 with high width multipliers are appropriate for server-side inference. YOLO models in their official implementations are not suitable for inference in CPUs.
description: 11-page version of a ~24-page version published in the Journal of Intelligent & Robotics Systems
A general relativistic effect in quasi-spherical objects as the possible origin of relativistic jets
Creators: name: Herrera, L.
name: Santos, N. O.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Based on recently reported results, we present arguments that sign changes in proper acceleration of test particles on the symmetry axis and close to the r=2M surface of quasi-spherical objects - related to the quadrupole moment of the source - might be at the origin of relativistic jets of quasars and micro-quasars.
description: 7 pages Latex. Discussion section enlarged. Reference added. To appear in Astr.Space.Sci
Managing MIS project failures : a crisis management perspective
Creators: name: Iacovou, Charalambos L.
Publisher: name: University of British Columbia
Year: 2009

description: This study describes a conceptual framework that portrays information system project failures as organizational crises. The main assumption of this study is that such failures will invariably happen and thus there is a need to make them less costly and more beneficial to organizations. To identify the behaviors and factors that influence an organization's ability to effectively manage a project failure, this dissertation reviews the crisis management literature. Based on this review, a three-stage model is formulated. To understand the mechanisms underlying this model, a number of hypotheses (which are informed by a number of related organizational behavior areas) are generated. These hypotheses focus on three key crisis management factors: the organization's ability to promptly detect an impeding failure, its capacity to manage the failure's impacts, and its propensity to learn from it. To empirically assess the validity of the conceptual model, three case studies of Canadian public organizations were conducted. The empirical findings provide strong support to the model's conjectures and indicate that project failures generate several crisis-related behaviors and responses. More specifically, the findings suggest that an organization's proactive preparation for a failure can have a significant moderating effect on its impact. However, the findings clearly show that an organization's ability to promptly detect (and prepare for) a failure is impeded by behaviors that are motivated by escalation of commitment. Such behaviors lead to a prolonged pre-crisis denial period and have a suppressing effect on whistle-blowing, which is pursued as a denial-curtailing strategy by non-management participants. The empirical findings describe both operational and legitimacy tactics used by organizations to cope with the aftermath of a project failure and indicate that credibility restoration is a significant concern during large crises. Finally, the empirical evidence indicates that organizational learning and adaptation are more likely to follow major project failures than less significant ones. This contradicts threat-rigidity arguments and provides support to the failure-induced learning theory.
The Role of Agglomeration and Technology in Shaping Firm Strategy and Organization
Creators: name: Cainelli, Giulio
name: Iacobucci, Donato
name: Cainelli, Giulio
name: Iacobucci, Donato
Publisher: name: Unknown
Year: 2006
Subjects: Industrial Organization

description: Over the last few years a growing number of contributions have shown that the presence of business groups, i.e. sets of firms legally distinct but belonging to the same owner(s), is significant. From a theoretical point of view, this presence poses the question of whether the group or the single legal unit should be considered as the elementary unit in economic analysis: i.e., what is generally meant in microeconomic theory by "firm". In this paper we consider the group as the appropriate unit to delimit the firm's boundary, i.e. as the "observed" organizational form adopted by firms when they grow in size. Starting from this hypothesis, the main aim of this paper is to analyse the role of structural variables, such as spatial agglomeration and technology, in determining some features of business groups' strategy and organization. Specifically, the analysis concerns the presence and organizational specificity of business groups based on their membership of industrial districts (as a proxy for spatial agglomeration) and to the role of spatial agglomeration and technology in vertical integration strategies. To conduct the analysis, we take advantage of a new and large data-set at firm and business group level, recently developed by ISTAT (the Italian National Statistical Institute). The data-set, referring to 2001, covers all manufacturing firms organized as joint-stock companies.
Phase formation and superconductivity of Fe-tube encapsulated and vacuum annealed MgB2
Creators: name: Singh, K. P.
name: Awana, V. P. S.
name: Shahabuddin, Md.
name: Saxena, R. B.
name: Nigam, Rashmi
name: Ansari, M. A.
name: Gupta, Anurag
name: Narayan, Himanshu
name: Halder, S. K.
name: Kishan, H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report optimization of the synthesis parameters viz. heating temperature (TH), and hold time (thold) for vacuum (10-5 torr) annealed and LN2 (liquid nitrogen) quenched MgB2 compound. These are single-phase compounds crystallizing in the hexagonal structure (space group P6/mmm) at room temperature. Our XRD results indicated that for phase-pure MgB2, the TH for 10-5 torr annealed and LN2 quenched samples is 750 0C. The right stoichiometry i.e., MgB2 of the compound corresponding to 10-5 Torr and TH of 750 0C is found for the hold time (thold) of 2.30 hours. With varying thold from 1- 4 hours at fixed TH (750 0C) and vacuum (10-5 torr), the c-lattice parameter decreases first and later increases with thold (hours) before a near saturation, while the a-lattice parameter first increase and later decreases beyond thold of 2.30 hours. c/a ratio versus thold plot showed an inverted bell shape curve, touching the lowest value of 1.141 which is reported value for perfect stoichiometry of MgB2. The optimized stoichimetric MgB2 compound exhibited superconductivity at 39.2 K with transition width of 0.6 K. In conclusion, the synthesis parameters for phase pure stoichimetric vacuum annealed MgB2 compound are optimized and are compared with widely reported Ta tube encapsulated samples.
description: 9 pages with Text + Figs. To Appear in MOdern Physics Letter B (2006)
Prospects for the Crossing by Earth of Comet C/2023 A3 Tsuchinshan-ATLAS's Ion Tail
Creators: name: Grant, Samuel R
name: Jones, Geraint H
Publisher: name: arXiv
Year: 2024
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The Earth will pass approximately downstream of the previous position of comet C/2023 A3 (Tsuchinshan-ATLAS) during 2024 October 10-13. We predict that spacecraft at the Sun-Earth Lagrange Point 1, L1, have a significant likelihood to detect pickup ions from the comet, as well as changes in the solar wind associated with the crossing of the comet's ion tail. Given the Earth's magnetosphere is also likely to cross the ion tail, it is possible that geomagnetic signatures associated with this will be observed by spacecraft within the magnetosphere and possible at ground-based magnetometers, as observed during Comet 1P/Halley's apparition in 1910.
Farm Policies and Added Sugars in US Diets
Creators: name: Beghin, John C.
name: Jensen, Helen H.
name: Beghin, John C.
name: Jensen, Helen H.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Crop Production/Industries
subject: Food Consumption/Nutrition/Food Safety
subject: Production Economics
subject: added sugar
subject: agricultural policy
subject: caloric
subject: corn
subject: diet
subject: farm policies
subject: HFCS
subject: subsidy
subject: sugar
subject: sweetener

description: Major changes in the use of US sweeteners have occurred since 1970, in both the amount and composition. Increased consumption of caloric sweeteners, especially in beverages, has been linked to excess energy intake and lower-quality diets. We examine how US farm policies (specifically agricultural research and development [R&D] expenditures and commodity programs) have affected the consumption and composition of sweeteners in the US diet. R&D expenditures have lowered the unit cost of most commodities and increased their use in food production, ceteris paribus, although corn has benefited more than sugar crops in the technical progress. Commodity programs have raised the price of sugar and decreased the price of corn; high fructose corn syrup (HFCS) became an inexpensive substitute for sugar in food beginning in 1970. However, the effect of this change in the price of ingredients has become less important over time. Today the farm value share in sweetened food is very small (below 5%), and HFCS has become a specialized input in many food items. Countries with different or no commodity programs experience similar increases in consumption of added sugar. We conclude that the current link between the US consumption of caloric sweeteners and farm policy is tenuous, although historically the link was stronger.
Higher-order supersymmetric quantum mechanics
Creators: name: C, David J Fernandez
name: Fernandez-Garcia, Nicolas
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We review the higher-order supersymmetric quantum mechanics (H-SUSY QM), which involves differential intertwining operators of order greater than one. The iterations of first-order SUSY transformations are used to derive in a simple way the higher-order case. The second order technique is addressed directly, and through this approach unexpected possibilities for designing spectra are uncovered. The formalism is applied to the harmonic oscillator: the corresponding H-SUSY partner Hamiltonians are ruled by polynomial Heisenberg algebras which allow a straight construction of the coherent states.
description: 42 pages, 12 eps figures
Invasive Diseases and Fruit Tree Production: Economic Tradeoffs of Citrus Greening Control on Florida's Citrus Industry
Creators: name: Morris, Robert A.
name: Muraro, Ronald P.
name: Spreen, Thomas H.
name: Morris, Robert A.
name: Muraro, Ronald P.
name: Spreen, Thomas H.
Publisher: name: Unknown
Year: 2008
Subjects: Crop Production/Industries

description: An investment model of Florida oranges was used to evaluate various management strategies for controlling Huanglongbing, or citrus greening, a highly destructive disease. This analysis will enable the Florida citrus industry to make more informed decisions about the economic tradeoffs among current citrus greening management alternatives.